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CARDIAC AUGMENTATION (PULSATORS, ETC.)

Subclass of:

600 - Surgery

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
600017000 With condition responsive means 43
600018000 Aortic balloon pumping 23
Entries
DocumentTitleDate
20110178362SYSTEMS AND METHODS FOR VOLUME REDUCTION - Systems and methods are provided for reducing the effective volume of a cardiac ventricle. A ventricular volume reduction system may include a containment system or container body deliverable through a catheter into the ventricle, with the containment system or container body being fillable to occupy space within the ventricle. A ventricular volume reduction system may include a partition that sequesters a portion of the ventricle and separates it from the flow path of blood in the ventricle. Methods for reducing the effective ventricular chamber volume may include placement of the containment system, the container body or the partition within the ventricle.07-21-2011
20100222633BLOOD PUMP SYSTEM WITH CONTROLLED WEANING - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump.09-02-2010
20110190567METHODS OF SECURING A CANNULA ASSEMBLY, IMPLANTING A CIRCULATORY ASSIST SYSTEM AND CROSSING A TISSUE BARRIER - A transseptal cannula assembly for directing blood from the heart of a patient and a minimally invasive method of implanting the same. The transseptal cannula assembly includes a flexible cannula body having proximal and distal portions with a lumen therebetween, a tip coupled to the distal portion of the flexible cannula body, and first and second anchors coupled to the tip. The anchors can be configured to be deployed from a contracted state to an expanded state and are configured to engage opposite sides of the heart tissue when in the expanded state. The anchors resist movement of the cannula assembly along a lengthwise central axis of the flexible cannula body.08-04-2011
20100152525Peri-arterial blood flow booster - A peri-arterial blood flow booster apparatus for improving blood pressure and flow, to be implanted around a blood vessel of a patient. The booster comprises a pressure applying device (06-17-2010
20110196192HEART HELP DEVICE, SYSTEM, AND METHOD - A medical device for assisting in the maintaining of an opening created in the thoracic diaphragm is provided. The medical device comprises a diaphragm contacting part adapted to be placed in contact with the thoracic diaphragm and thereby assist in the maintaining of the opening created in the thoracic diaphragm. A pericardial drainage device for draining a fluid from the pericardium of a patient is further provided. The drainage device comprises a conduit; the conduit comprises a first and second section. At least a portion of the first section is adapted to receive a fluid inside of the pericardium. The second section of the conduit is adapted to be positioned outside of the pericardium of a patient and enable the exhaust of said fluid received from said pericardium through at least a portion of said second section.08-11-2011
20110196191CANNULA LINED WITH TISSUE IN-GROWTH MATERIAL AND METHOD OF USING THE SAME - A cannula for moving fluids between a pump and the circulatory system of a patient. The cannula includes a liner having an intermediate portion between a proximal portion and a distal portion, and a lumen extending between the proximal and distal portions. At least the intermediate portion of the liner is constructed from a tissue in-growth material for supporting the growth of endothelial cells. A jacket surrounds at least part of the liner.08-11-2011
20110196190DEVICES, METHODS AND SYSTEMS FOR ESTABLISHING SUPPLEMENTAL BLOOD FLOW IN THE CIRCULATORY SYSTEM - A cannula for insertion through a biologic tissue. The cannula includes a shaft having proximal and distal end portions with a lumen therebetween. The cannula further includes a tip having a proximal end portion, a distal tip end, and a lumen therebetween. The proximal end portion of the tip is secured to the distal end portion of the shaft so that the lumen of the tip is in fluid communication with the lumen of the shaft. The tip includes an opening that extends proximally relative to the distal tip end to permit the flow of fluid into the lumen of the tip even in the event that the distal tip end becomes obstructed.08-11-2011
20110196189EXTRA-CARDIAC DIFFERENTIAL VENTRICULAR ACTUATION BY INERTIAL AND BARIC PARTITIONING - A device for extra-cardiac actuation for the support of a failing heart is provided that utilizes the inertial component of a driving fluid to provide separately adjustable quantities of supportive energy to the left and right ventricles. By partitioning the inertial and baric forms of energy delivered to a single chamber, heart encircling assist device, and by localizing the heart to minimize lateral and axial displacement a device and method for achieving balanced left-right flow is disclosed that restores the Frank-Starling mechanism to a failing heart and assists recovery by enabling the heart to achieve physiologic cardiovascular equilibrium.08-11-2011
20130085319EXPANDABLE BLOOD PUMPS AND METHODS OF THEIR DEPLOYMENT AND USE - A pump for inducing motion of a fluid, the pump including a cannula adjustable between an operable configuration having a first diameter and a deployment configuration having a substantially smaller second diameter. An impeller is rotatable within the cannula about an axis. The impeller includes an at least semi-rigid support for a flexible web, and is positionable with respect to the cannula the operable configuration and the deployment configuration, the operable configuration extending the web to a first radial distance from the axis and the deployment configuration collapsing the web to a second substantially smaller radial distance from the axis.04-04-2013
20130085318SYSTEM FOR INTRODUCING A PUMP - The invention resides in the field of introducing fluid pumps into a lumen and relates to a system for introducing a pump into a lumen which comprises a first sheath and a pump to be introduced into the first sheath, or a system which has a pump with a distal pump unit and a shaft catheter which emerges proximally to the pump unit.04-04-2013
20100041939BLOOD PUMP WITH MICROMOTOR - The invention relates to a micromotor (02-18-2010
20090171136VAD connector plug - A plug which may be positioned in place of a Ventricular Assist Device (“VAD”) within a VAD connector mounted to the heart. The VAD connector may have at least one VAD-engaging feature and may define an opening. The plug may have a body adapted to fill the opening of the VAD connector and may engage the VAD connector. The plug may be installed in place of a VAD when the heart heals, and then removed and replaced by a VAD if the patient's condition deteriorates.07-02-2009
20090062596Heart band with fillable chambers to modify heart valve function - The present invention relates to an external heart device, having a layered band dimensioned to be received around a patient's heart, which also includes at least one fillable chamber between the layers in the band that functions to apply localized pressure to the outside of the heart when filled. More particularly, the fillable chambers are positioned such that they exert an inward radial force on a heart valve. Areas between the fillable chambers may also be sized and positioned to form a bridge of little to no pressure over the vascular structures of the heart.03-05-2009
20120265002CATHETER PUMP ARRANGEMENT AND FLEXIBLE SHAFT ARRANGEMENT HAVING A CORE - The invention relates to a flexible shaft arrangement having a flexible hollow shaft which has an end at the drive side and an end at the output side, wherein the hollow shaft is reinforced sectionally between these ends by a core extending in its interior. Stiffer and more flexible sections can hereby be selectively positioned within the shaft arrangement.10-18-2012
20100145133IMPLANTABLE HEART ASSIST SYSTEM AND METHOD OF APPLYING SAME - An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and methods of using same. One embodiment provides a vascular graft that has a first end that is sized and configured to couple to a non-primary blood vessel and a second end that is fluidly coupled to a pump to conduct blood between the pump and the non-primary blood vessel. An outflow conduit is also provided that has a first end sized and configured to be positioned within the same or different blood vessel, whether primary or non-primary, through the vascular graft. The outflow conduit is fluidly coupled to the pump to conduct blood between the pump and the patient. The vascular graft may be connected to the blood vessel subcutaneously to permit application of the extracardiac pumping system in a minimally-invasive procedure.06-10-2010
20130041202FLUID PUMP HAVING A RADIALLY COMPRESSIBLE ROTOR - To design the rotor (02-14-2013
20130041203BLOOD FLOW ASSIST DEVICES, SYSTEMS AND METHODS - An implantable pump system for assisting blood flow includes a flexible conduit, at least one movable valve in fluid connection with the flexible conduit, a drive system comprising a rotary motor and a speed reducer operatively connected to the rotary motor; and a converter operatively connected to the drive system and operatively connected to the valve to drive the valve in a reciprocating linear manner. In a number of embodiments, the speed reducer includes a spur gear driving a ring gear, wherein the converter is operatively connected to the speed reducer.02-14-2013
20090156885ARTIFICIAL HEART SYSTEM - A blood pump system includes two blood pumps, which may be implanted into a patient. The blood pumps may comprise VAD pumps. Control devices and methods operate the pumps such that they can function as a total artificial heart.06-18-2009
20100105978HEART ASSIST DEVICE - Heart side magnets 04-29-2010
20100331605Physiologic pulsatile pump - A pulsatile blood circulating pump system that is adapted for use in cardiopulmonary bypass, ventricular assist (LVAD, RVAD, BiVAD), ECMO, organ preservation, fetal cardiac bypass, cancer treatment, and various areas of circulation research, which can be controlled in such a way as to produce a desired blood flow that closely approximates the physiological blood flow of the patient. The pump system includes a pulsating mechanism having a housing defining a chamber within which a compressible-expandable bladder is sealably mounted. The system further includes a hydraulic actuator having a pressure imparting member that acts upon a pressure transmissive fluid contained within the actuator chamber in a manner to generate a pulsatile pressure on the transmissive fluid, which, in turn, results in a pulsatile pressure being exerted on bladder in a manner to controllably vary the volume thereof. Additionally, the system includes a compact, highly reliable voice-coil motor that is operably associated with the hydraulic actuator for controllably moving the pressure imparting member within the fluid chamber and further includes a fully programmable motion controller that controls the voice-coil motor. Further, the system includes a programmable touch-screen component that functions to control the motion controller.12-30-2010
20100094077Method for substantially non-delaminable smooth ventricular assist device conduit and product from same - A method of non-delaminably bonding a non-porous thermoplastic elastomer to a substrate by heating a bilayer of the elastomer and the substrate for a predetermined time and a product obtained by the method. Methods for producing non-delaminable conduits and non-delaminable kink-resistant conduits constructed of biocompatible elastomers and substrates, and products produced by these methods are taught. Methods, products, and articles of manufacture relating to non-delaminable monofilament supported kink-resistive conduits that may be used as inflow conduits in left ventricular assist devices for treatment of heart failure are also provided.04-15-2010
20120184803CATHETER DEVICE HAVING A COUPLING DEVICE FOR A DRIVE DEVICE - The invention relates to a catheter device, having a hollow catheter (07-19-2012
20130046130LOADING GUIDE LUMEN - An apparatus is disclosed including: an intracardiac pump device having a path for a guidewire extending through the pump device from a first opening to a second opening; and a lumen which extends from a first end located outside of the pump device, into the pump device through the first opening in the pump device, along the path for the guidewire, out of the pump device through the second opening, and to a second end located outside of the pump device. The lumen is configured to receive the guidewire such that when the guidewire passes through the lumen from the first end to the second end, the guidewire is positioned along the path.02-21-2013
20130046129Non-Invasive Diagnostics for Ventrical Assist Device - A circulatory assist system has a pump with a motor coupled to rotate the pump at a selectable speed. A controller drives the motor at a target speed and collects blood flow measurements during operation of the pump. An impaired flow condition is identified when a plurality of successive blood flow measurements are between an expected minimum flow and a low flow threshold, such that the low flow would necessitate issuing an alert. During the impaired flow condition, it is detected whether an inflow obstruction exists by determining whether a reduction in speed of the pump is correlated with a predetermined increase in the blood flow measurements. If the inflow obstruction is detected, then the speed of the pump is further reduced to further increase the blood flow measurements.02-21-2013
20100130809BLOOD PUMP SYSTEM - A blood pump system and methods for the use and operation of such a blood system is described, wherein the blood pump system includes an implantable pump and an implantable flow measurement device. A processing device receives indications of a number of pump parameters such as pump voltage, pump current and pump speed. Flow rate is determined based on the pump parameters, and this determined flow rate is compared to the actual flow rate as measured by the flow measurement device. In certain embodiments, the flow measurement device may be periodically energized to make the comparison, then powered off to reduce power consumption. The time period in which the flow measurement device is powered off is based on the difference between the determined and the actual flow rates.05-27-2010
20090093670Treating Dysfunctional Cardiac Tissue - Medical devices, systems, and methods reduce the distance between two points in tissue, often for treatment of congestive heart failure and often in a minimally invasive manner. An anchor is inserted along an insertion path through a first wall of the heart. An arm of the anchor is deployed and rotationally positioned according to a desired alignment. Application of tension to the anchor may draw the first and second walls of the heart into contact along a desired contour so as to effect a desired change in the geometry of the heart. Additional anchors may be inserted and aligned with the first anchor to close off a portion of a ventricle such that the ventricle is geometrically remodeled and disease progression is reversed, halted, and/or slowed.04-09-2009
20130060077PUMP ARRANGEMENT - The subject matter of the present invention is a pump arrangement (03-07-2013
20120226097BLOOD PUMP - A blood pump (09-06-2012
20130066139PUMP OR ROTARY CUTTER FOR OPERATION IN A FLUID - The invention relates to an apparatus for mechanical action upon a medium (03-14-2013
20130066140HEART ASSIST DEVICE WITH EXPANDABLE IMPELLER PUMP - An impeller includes a hub and a blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as blood, and may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient.03-14-2013
20080269543Functional Device with a Detachable Component - A device for enhancing blood circulation that includes a main element, a detachable element with an identification mark, and attachment means for grasping the detachable element by the main element. The main element functions by intermittently tightening and relaxing its grasp of the detachable element when activated. Additionally the main element authenticates the identification mark of the detachable element; and the main element is enabled to function if the authentication of the identification mark is positive.10-30-2008
20130165735SYSTEM FOR IMPROVING CARDIAC FUNCTION BY SEALING A PARTITIONING MEMBRANE WITHIN A VENTRICLE - Partitioning devices that may be secured and sealed within a heart chamber for separating a patient's heart chamber into a productive portion and a non-productive portion are described herein. The partitioning devices described herein may include a reinforced membrane with outwardly biased members. The reinforced membrane may have a central hub with a distally extending support stem with a plurality of feet which extend radially from a centerline axis and preferably have ends that are aligned in a common plane. These devices may be secured within the heart chamber by sealing them to the wall of the heart chamber, for example, by inflating an inflatable element on the periphery of the device. The non-productive portion may be filled with a material, including occlusive materials. Sealing and/or filling the non-productive portion formed by the devices described herein may help prevent leakage from the non-productive region.06-27-2013
20110282128CATHETER PUMP FOR CIRCULATORY SUPPORT - A catheter pump intended to be inserted in the circulatory system, for example for assisting the heart, including a hollow catheter, a sheath, a drive cable, a drive shaft, a propeller, a proximal housing, a distal housing, and several filaments. Axial movement of the sheath in relation to the catheter brings the distal housing closer to the proximal housing so that said filaments are unfolded to form a cage. The propeller is pivotable between a first folded position, in which the propeller is parallel with the drive shaft and an unfolded position in which the propeller is perpendicular to the drive shaft. Axial movement of the sheath in a first movement unfolds the cage and in a second subsequent movement, actuation pins of the sleeve act upon a cam surface that unfolds the propeller.11-17-2011
20110282126PULSATILE MEDICAL DEVICE DESIGNED TO BE USED IN EXTRACORPOREAL SURGERY - The invention relates to a pulsatile medical device enabling a blood flow to be circulated. The invention consists in a device comprising: 11-17-2011
20110282127SYSTEM FOR RESTORING CARDIAC MUSCULAR ASYNCHRONIZED CONTRACTION MANNER IN A FAILING HEART - An expandable elastic structure is introduced into the left ventricular chamber via intravascular catheter in a retrievable and safe manner, and having let anchors anchored to the layer of mid-myocardium of cardiac wall. The structure helps enhancing blood perfusion in the layer of both subendocardium and mid-myocardium and keeps the volume of both subendocardium and mid-myocardium in an expanded state, as such the expandable elastic structure helps restore cardiac muscular asynchronized contraction manner in a diseased heart of a patient. And eventually the expandable elastic structure prevents progressive remodeling process of a failing heart, and improves cardiac function.11-17-2011
20110137107HEART SUPPORT DEVICE - A heart support device for pulsatile delivery of blood comprising a first and a second ventricle and a pump. Both ventricles comprises a fluid chamber and a blood-conveying chamber, wherein each fluid chamber can be filled with a fluid or emptied by way of the pump in such a way that an expansion or contraction of the fluid chamber occurs. In an expansion of the fluid chamber of a ventricle, a compression of the blood-conveying chamber of the same ventricle takes place, wherein a rigid pressure plate is disposed between a fluid chamber and the respective blood-conveying chamber, said pressure plate being able to move in the direction of the respective blood-conveying chamber.06-09-2011
20130023721Extracellular matrix encasement structures and methods - A remodelable encasement structure comprising a pouch formed from at least one sheet of bioremodelable material, the pouch having an internal region configured to receive a device therein, the bioremodelable material comprising an extracellular matrix (ECM) composition that includes an ECM scaffold component derived from a mammalian source and at least a bioactive component selected from the group consisting of a statin and a chitin derivative01-24-2013
20110301403AXIAL FLOW PUMP WITH MULTI-GROOVED ROTOR - An axial-flow blood pump for pumping blood includes a substantially cylindrical outer enclosure. A tubular housing concentric with and located within the outer enclosure has at one end an inlet and at an opposite end an outlet. A motor stator is concentric with and located between the outer enclosure and the tubular housing. An impeller is concentric with and located within the tubular housing. The impeller is suspended in operation by a combination of passive magnetic forces between magnets within the impeller or magnetized regions of the impeller and the motor stator and hydrodynamic thrust forces generated as blood flows between the tubular housing and a plurality of hydrodynamic thrust bearing surfaces located on the impeller. A volute may be in fluid-tight connection with the outlet of the tubular housing for receiving blood in the axial direction and directing blood in a direction normal to the axial direction. The volute has a flow-improving member extending axially from the volute and into and coaxially with the tubular housing.12-08-2011
20110288366Surgical Approach to Treat Coronary Artery Syndromes - A treatment for congestive heart failure due to acute or chronic coronary syndromes with myocardial infarction comprising excising from the patient's heart an auricular appendage and grafting the auricular appendage to the damaged heart muscle.11-24-2011
20110004046BLOOD PUMP WITH EXPANDABLE CANNULA - A blood pump includes an impeller having a plurality of foldable blades and a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller can reside in the expandable portion of the cannula. The cannula has a collapsed condition for percutaneous delivery to a desired location within the body, and an expanded condition in which the impeller can rotate to pump blood. A flexible drive shaft can extend through the cannula for rotationally driving the impeller within the patient's body.01-06-2011
20120088955ARTERIAL DEVICE, SYSTEM AND METHOD - An arterial device, system and method are provided for use with a patient undergoing a cardiac procedure. The system is configured for enabling one or more arterial devices to be accommodated in the aorta of the patient in use of the system, and a perfusion lumen arrangement provides therethrough a target perfusion flow into the aorta having a target perfusion flow rate that is significantly greater than a nominal perfusion flow rate, by an excess perfusion flow rate. A suction lumen arrangement provides therethrough a suction flow out of the aorta at a suction flow rate. The target perfusion flow rate and the suction flow rate may be concurrently and selectively controlled to cause embolic debris that may be present in the aorta to be diverted to the suction inlet, while providing the nominal flow rate to the body circulation of the patient.04-12-2012
20100249491TWO-PIECE TRANSSEPTAL CANNULA, DELIVERY SYSTEM, AND METHOD OF DELIVERY - A cannula assembly for directing blood from the heart of a patient and a minimally invasive method of implanting the same. The cannula assembly includes a flexible cannula body having a proximal end and a distal end with a receiving portion, and a transseptal tip having a distal end and a proximal end with an engaging portion. First and second anchors are coupled to the transseptal tip and configured to be deployed from a contracted state to an expanded state. The engaging portion of the transseptal tip is operable to removably engage the receiving portion of the flexible cannula body in vivo.09-30-2010
20100249490TRANSSEPTAL CANNULA DEVICE, COAXIAL BALLOON DELIVERY DEVICE, AND METHODS OF USING THE SAME - A transseptal cannula having a flexible cannula body, a left atrial anchor coupled to the distal end of the flexible cannula body, and a right atrial anchor operable to be attached to the left atrial anchor in vivo. The left and right atrial anchors are implanted and deployed separately. Delivery of the transseptal cannula to a heart tissue can include a low profile coaxial balloon catheter comprising a tube body including an inner member and an outer member surrounding the inner member and thereby creating an inflation channel between the inner and outer members, a hub coupled to the proximal portion of the tube body and including a fluid space in fluid communication with the inflation channel; and a balloon coupled to the distal portion of the tube body, wherein the balloon is in fluid communication with the inflation channel. The hub of the coaxial balloon catheter is constructed with a low profile so that other surgical devices can be directed over the coaxial hub without deflating and removing the balloon.09-30-2010
20090182188DEVICES, METHODS AND SYSTEMS FOR ESTABLISHING SUPPLEMENTAL BLOOD FLOW IN THE CIRCULATORY SYSTEM - Devices, systems and methods for establishing a blood flow conduit between a chamber in a heart of a patient and a remote location. A blood inflow cannula having an outer surface and proximal and distal end portions. The distal end portion is configured for insertion into the chamber of the heart. First and second anchor elements have respective maximum width dimensions extending outwardly from the outer surface of the cannula. The first anchor element is positioned more distally than the second anchor element defining a tissue receiving space therebetween. The maximum width dimension of the first anchor element may be larger than the maximum width dimension of the second anchor element in use. The first anchor element is configured to be positioned inside the heart chamber and the second anchor element is configured to be positioned outside the heart chamber with heart tissue held in the tissue receiving space therebetween.07-16-2009
20100152523Method and Apparatus for Minimally Invasive Direct Mechanical Ventricular Actuation - Disclosed is a device for assisting the function of a heart that is collapsible to facilitate minimally invasive procedures. The cup-shaped device may be inserted into the chest cavity and deployed on the heart via a specially configured tube. The device comprises a cup-shaped shell expanded by a support cage disposed within the shell, and an elastic cup-shaped liner, together forming an inflatable cavity between the outer surface of the liner and the inner surface of the shell. Alternate application of positive and negative pressures to the cavity provides controlled, active, systolic and diastolic support to the heart.06-17-2010
20100268017Intracardiac Pumping Device - The intracardiac pumping device has a pump (10-21-2010
20120035411STABILIZING DRIVE FOR CONTACTLESS ROTARY BLOOD PUMP IMPELLER - A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.02-09-2012
20090088596Cardiac Assist System with Cell Transplantation Aspects - A ventricular assist system includes a controller supplying a DC voltage or an AC voltage, and electromagnets adapted to be adhered to an infarct portion of a heart at the time of embedding a pump. After embedding the system, cells enclosed in capsules are released into the surroundings of the infarct portion by use of a catheter. The capsules are magnetic so that they can be concentrated onto the infarct portion by magnetic fields of the electromagnets, and are broken in the vicinity of the infarct portion, whereby cells effective for regeneration of cardiac muscles can be conveyed to the infarct portion in a noninvasive manner after the embedding of the ventricular assist system.04-02-2009
20090088597INTRAATRIAL VENTRICULAR ASSIST DEVICE - A medical device comprises a pump adapted to fit within an atrium of a heart, said pump comprising an inlet and an outlet. The device further comprises a flexible outflow conduit coupled to said outlet. A method of assisting ventricular function of a heart of a patient comprises: a) inserting a continuous flow pump having an inlet and an outlet into the heart via a subclavian or jugular vein; b) attaching the outlet of the continuous flow pump to an atrial septum, wherein the inlet of the continuous flow pump is directed into a heart atrium; c) attaching the distal end of the outflow conduit to an artery; and d) operating the pump at a volumetric rate ranging from about 2 L/min to about 3 L/min.04-02-2009
20080207986Heart assist device - A heart assist device and method of making the same includes a catheter and a balloon attached to the catheter. The heart assist device is used with a system for inflating and deflating the balloon in sequence to systole and diastole of a patient's heart. In some examples, the catheter has a curved portion with a stiffening agent disposed therein. In some examples, a tip of the catheter extends into an interior of the balloon.08-28-2008
20090287037REMEDIATION OF FUNCTIONAL CARDIAC MITRAL VALVE REGURGITATION - A dynamic device for reducing functional mitral regurgitation is described. The device is disposed externally to the heart and effectively acts as a splint for reducing further dilation of the heart in patients diagnosed with cardiomyopathy, and for reducing tethering of the papillary muscle on the mitral valve. The device does not require cardiopulmonary bypass for its installation since it is attached to the outside of the left ventricle, thereby reducing surgical risk, and is not exposed to the patient's blood once installed, thereby reducing the risk of thromboembolic disease.11-19-2009
20090292160Electromagnetic Cardiac Assist Device and Method - Embodiments of the present invention provide systems and methods for assisting with contraction of the heart muscle. For example, in one embodiment of the invention, one or more flexible strips are attached to the surface of the heart, each strip having a plurality of electromagnets alternating with a plurality of permanent magnets. The electromagnets are electrically coupled to a control device and a power supply for generating current in the electromagnets. The control device controls the current in the electromagnets in such a way that the electromagnets are periodically activated to attract the adjacent permanent magnets to assist with contraction of the heart muscle. In some embodiments a sensor is provided for sensing the sinus rhythm so that the control device can activate the electromagnets based on the sensed sinus rhythm.11-26-2009
20100280306METHODS, DEVICES AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM - Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a first conduit while the heart is in systole and expel the blood into the first conduit and the artery while the heart is in diastole.11-04-2010
20090143635ROTARY BLOOD PUMP - A blood pump consisting of an inflow cannula, a stator fixed to the pump housing, a flow straightener, an impeller, and a diffuser. The pump may include a flow straightener assembly consisting of the flow straightener body and front shaft. The pump may include an impeller assembly with a bearing on the front hub section. The pump may have a body contour which is shaped such that the rear section of the flow straightener body blends into the inserted shaft and there is no axial gap between the end of the flow straightener other than the ends of the blades and the front hub of the impeller.06-04-2009
20080275290Implantable heart assist system and method of applying same - An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and methods of using same. One embodiment of the intravascular extracardiac system comprises a pump with inflow and outflow conduits that are sized and configured to be implantable intravascularly through a non-primary vessel, whereby it may positioned where desired within the patient's vasculature. The system comprises a subcardiac pump that may be driven directly or electromagnetically from within or without the patient. The pump is configured to be operated continuously or in a pulsatile fashion, synchronous with the patient's heart, thereby potentially reducing the afterload of the heart. In another embodiment, the system is positioned extracorporeally, with the inflow conduit and outflow conduit applied percutaneously to a non-primary vessel for circulating blood to and from the non-primary vessel or between the non-primary vessel and another blood vessel within the patient's vasculature.11-06-2008
20100280305BLOOD PUMP AND PUMP UNIT - Provided are a magnetic coupling as an axial bearing including a driven magnet (11-04-2010
20080306329Ventricular Assist Device - A manifold for accessing blood from a human blood vessel is disclosed which comprises a first and a second pathway intersecting with each other at an angle, the first pathway being configured to be completed embedded in the human blood vessel with the second pathway leading toward outside of the human blood vessel wherein the manifold is substantially retained by the human blood vessel alone.12-11-2008
20120296152MULTI-LUMEN CANNULA - This document relates to methods and materials for providing blood flow for a blood pump recipient. For example, cannulae that can be connected to the circulatory system of a mammal and can be used in conjunction with a blood pump (e.g., an assist device) are provided.11-22-2012
20120296151ASSEMBLY AND METHOD OF IMPLANTING A HEART ASSIST SYSTEM - A needle guard is used when suturing the cuff of an attachment ring to the heart. The needle guard is disposed in the attachment ring to prevent other parts of the attachment ring from being punctured by a suturing needle. The needle guard can include one or more grooves to inhibit relative movement between the needle guard and the attachment ring during suturing. The needle guard is removed upon completion of suturing and to allow insertion into attachment ring of an inflow conduit of a heart assist device. An articulated clamp is used to compress the attachment ring into engagement with the inflow conduit. The attachment include an annular rib that grabs the inflow conduit.11-22-2012
20090264697FLUID PUMPING DEVICE AND COMPONENTS WITH STATIC SEAL - A static seal structure for a pump housing includes a support structure, a first sealing element, and a second sealing element. The support structure circumscribes a pump chamber and includes a first sealing surface, an opposing second sealing surface, and a fluid transfer end interposed between the sealing surfaces. The support structure provides a fluid flow path running through the fluid transfer end and into the pump chamber via an inlet bore and from the pump chamber back through the fluid transfer end via an outlet bore. The first sealing element is disposed on the first sealing surface, and the second sealing element is disposed on the second sealing surface. The sealing elements are configured for forming sealing interfaces in the pump housing, establishing a static seal that isolates the pump chamber from an environment external to the fluid pump housing.10-22-2009
20090062597Article Comprising an Impeller - An impeller for use in conjunction with a percutaneously-insertable blood pump or other rotatable equipment includes a blade that is segmented into a plurality of overlapping or abutting bladelets. In some embodiments, the bladelets are foldable and one side of each bladelet is concave.03-05-2009
20120142994COMPRESSIBLE AND EXPANDABLE BLADE FOR A FLUID PUMP - The invention relates to a compressible and expandable blade for the rotor of a fluid pump having at least two lamellae which are disposed adjacently, are pivotable respectively relative to an axis of rotation of the rotor and moveable relative to each other, and abut against each other in the expanded state of the blade such that they form together a continuous blade surface.06-07-2012
20090187064CARDIAC SLEEVE APPARATUS, SYSTEM AND METHOD OF USE - Cardiac assist sleeve and methods for using and making the cardiac assist sleeve that includes first elongate strips and second elongate strips of memory alloy that change shape to change a volume of cardiac assist sleeve.07-23-2009
20090187063INFLATABLE VENTRICULAR PARTITIONING DEVICE - This invention is directed to a device and method of using the device for partitioning a patient's heart chamber into a productive portion and a non-productive portion. The device is particularly suitable for treating patients with congestive heart failure. The device has an inflatable partitioning element which separates the productive and non-productive portions of the heart chamber and in some embodiments also has a supporting element, which may also be inflatable, extending between the inflatable partitioning element and the wall of the non-productive portion of the patient's heart chamber. The supporting element may have a non-traumatic distal end to engage the ventricular wall or a tissue penetrating anchoring element to secure the device to the patient's heart wall.07-23-2009
20090259089Expandable catheter for delivery of fluids - A multi lumen catheter is made from a number of thin walled flexible tubes bonded together to form an inner lumen. The inner lumen can withstand vacuum when the outside tubes are pressurized. During insertion the tubes are compressed and collapsed. The tubes expand by the pressure of the pumped fluid. At the point the catheter enters the body the expansion is restricted to a smaller diameter than the rest of the catheter.10-15-2009
20090005632Method and System for Physiologic Control of a Blood Pump - A physiologic control system and method for controlling a blood pump system such as a VAD system. The pump system includes, for example, a blood pump and a controller for controlling the pump. The system may further include a flow measurement device. A desired peak to peak flow amplitude is determined, and then adjusted in response to various system parameters either manually or automatically by the system.01-01-2009
20130217953FLUID PUMPING VENTRICULAR ASSIST DEVICE AND COMPONENTS WITH STATIC SEAL - A ventricular assist device (VAD) having static seal structure for a pump housing which includes a support structure, a first sealing element, and a second sealing element. The support structure circumscribes a pump chamber and includes a first sealing surface, an opposing second sealing surface, and a fluid transfer end interposed between the sealing surfaces. The support structure provides a fluid flow path running through the fluid transfer end and into the pump chamber via an inlet bore and from the pump chamber back through the fluid transfer end via an outlet bore. The first sealing element is disposed on the first sealing surface, and the second sealing element is disposed on the second sealing surface. The sealing elements are configured for forming sealing interfaces in the pump housing, establishing a static seal that isolates the pump chamber from an environment external to the fluid pump housing.08-22-2013
20090023975CANNULA FOR HEART CHAMBER IMPLANTATION AND RELATED SYSTEMS AND METHODS - A cannula for implantation into a chamber of a heart includes an elongate body having a lumen extending along a longitudinal axis, a first end, and a second end. The first and second ends define openings into the lumen and the second end includes a flat portion. A flared tip portion extends from the flat portion of the second end in a direction toward the first end, and flares radially outward from the longitudinal axis and in such direction. A ring member extends around the axis of the elongate body and is spaced from the flared tip portion, and the ring member is adapted for retaining the elongate body in a position relative to a wall of the chamber. An embodiment of a flared tip portion may further include a barbed surface configured to contact tissue around an aperture in the wall of the heart when the cannula travels through the aperture.01-22-2009
20080306327Apparatus Comprising a Drive Cable for a Medical Device - An article comprising a drive cable suitable for high-speed operation in an anatomy having small-radii bends is disclosed. The drive cables disclosed herein include one or more physical adaptations that enable them to be “tuned” to avoid large amplitude vibrations during operation.12-11-2008
20080306328DUCT FOR VENTRICULAR-ASSISTANCE DEVICE - A duct for carrying blood for ventricular-assistance devices (VADs) has a tubular body and an end having associated thereto a valve for enabling the flow of blood unidirectionally in the duct. The valve has an annular reinforcement, and the end of the duct is provided with a slot for receiving the annular reinforcement of the valve with the reinforcement in a retracted position in said slot. The aforesaid end and the aforesaid tubular body of the duct are provided with a continuous coating of haemocompatible material, such as a polyurethane.12-11-2008
20110144413Heart Assist Apparatus - The apparatus is a ventricular assist device comprising: a pump with a housing having therein radial a impeller, and a rotor for driving the impeller, both the rotor and the impeller being hydrodynamically suspended within the housing in us, the pump further including a stator for driving the rotor; an inlet cannula section arranged to extend from an internal part of the ventricle to straddle the wall of the ventricle, the stator being within the inlet cannula section to be located in the internal part of the ventricle; and an outlet for blood driven by the impeller such that the pump is a radial pump. Both the outlet and the impeller are arranged to reside outside of the heart.06-16-2011
20090054723RETRIEVABLE DEVICES FOR IMPROVING CARDIAC FUNCTION - Removable cardiac implants, applicators for inserting, repositioning and/or removing them, and methods of using them are described. In particular, removable or repositionable ventricular partitioning devices are described. Systems including removable implants and applicators for inserting and/or removing them are also described.02-26-2009
20080262289Blood Pump Having A Passive Non-Contacting Bearing Suspension - There is provided a non-contact, passively suspended blood pump that includes (a) a housing; (b) a pump rotor within the housing, wherein the pump rotor has a first end and a second end, and an axis of rotation; (c) a first axial thrust bearing across a first axial gap, between the first end and the housing, that axially suspends the first end; (d) a second axial thrust bearing across a second axial gap, between the second end and the housing, that axially suspends the second end; (e) a first radial hydrodynamic bearing that radially suspends the first end; and (f) a second radial hydrodynamic bearing that radially suspends the second end. Determining pump differential pressure by monitoring rotor axial position allows automatic physiologic control.10-23-2008
20120078032METHODS, DEVICES AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM - Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a blood flow conduit while the heart is in systole and expel the blood into the blood flow conduit and the artery while the heart is in diastole.03-29-2012
20120078031CONTROL OF CIRCULATORY ASSIST SYSTEMS - In one general aspect, a method includes measuring blood flow through a right rotary blood pump, measuring blood flow through a left rotary blood pump, and controlling a speed of one of the rotary blood pumps using a controller that calculates the speed of one of the rotary blood pumps based on the measured blood flow through the other rotary blood pump.03-29-2012
20120078030GENERATING ARTIFICIAL PULSE - In order to produce a pulsatile blood flow pattern that includes time periods of relatively high blood flow rates and time periods of relatively low blood flow rates, the operating speed of a blood pump can be selectively controlled to produce an operating speed pattern that includes time periods of relatively high rotation speeds and periods of relatively low rotation speeds. For example, the blood pump is rotated at a first speed for a first period of time. The speed of the blood pump is then decreased from the first speed to a second speed and is operated at the second speed for a second amount of time. The speed of the blood pump is then decreased to a third speed for a third amount of time. If desired, the operating speed pattern can be repeated to continue the pulsatile blood flow pattern.03-29-2012
20090203956NEONATE OR INFANT PULSATING WEAR - A neonate or infant pulsating wear to obtain the pulse is disclosed, which comprise a multilayer structure. The structure comprises an elastic inner layer contacted with the body of the infant, an outer layer isolated with the body of the infant, and a middle layer between the inner layer and the outer layer. The middle layer contains a pulsant cyclic liquid and the outer layer is harder than the inner layer.08-13-2009
20090240097IMPLANTABLE TWO-CHAMBER SYSTEM FOR SUPPORTING THE LEFT VENTRICLE OF THE HEART - Disclosed is an implantable two-chamber system for supporting the left ventricle of the heart. Each of the two pumping chambers (09-24-2009
20090247809External counter pulsation treatment - A method for treating patients suffering from left ventricular dysfunction is disclosed. The method involves applying, during diastole, for a time period of about one hour, at least five days each week for at least about six weeks, an incrementally increasing external therapeutic pressure sequentially to the patients' lower extremities from first the calves, then the thighs and last the buttocks. The initial hourly treatments are carried out at a peak diastolic/systolic pressure ratio (D/S Ratio) in the range of about 0.4:1 up to about 0.9:1, depending on the patient's left ventricular ejection fraction. The D/S Ratio is increased slightly during the next set of hourly treatments, the D/S Ratio is again increased slightly during the next following set of hourly treatments, the D/S Ratio is again increased slightly during the next set of hourly treatments, and finally the D/S Ratio is increased slightly and maintained during the remaining set of hourly treatments. The patient's cardiopulmonary functions preferably are monitored to determine if additional external therapeutic pressure treatments are needed.10-01-2009
20090149695CATHETER PUMP, CATHETER AND FITTINGS THEREFORE AND METHODS OF USING A CATHETER PUMP - A catheter pump includes a catheter channel communicating with a distal end portion of the catheter for alternatingly leading fluid in proximal and distal directions. At least one outlet passage is distally spaced from the inlet passage or passages. The catheter pump further includes a displacement structure communicating with the proximal end portion of the catheter for alternatingly applying suction and pressure for driving the fluid displacement. At least in operating condition, the inlet passage or passages are continuously open. A catheter and fittings for such a catheter pump and method of using a catheter pump are also described.06-11-2009
20120035412METHOD FOR CONNECTING A BLOOD PUMP WITHOUT TRAPPING AIR BUBBLES - A method for connecting medical tubing or any other type of fluidic circuit conduits (e.g., cannulae) to a ventricular assist device (“VAD”) or any other pumping device used for blood pumping during cardiac circulatory support for vascular surgery. The method prevent air bubbles from entering a cardiac circulatory support system when connecting cannulae to a VAD that may later enter the blood stream of a patient during cardiac surgery, and also provide for purging any air bubbles that may have entered the cardiac circulatory support system during a cannulae-VAD connection.02-09-2012
20120245404BLOOD PUMP - A blood pump (09-27-2012
20100185043HEART ASSIST DEVICE, CANNULA AND FILTER THEREFOR - A cannula, such as an implantable cannula, for an implantable blood pump is disclosed. The cannula comprises a body having a bore extending between an inlet and an outlet for fluid communication therebetween. A filter is disposed in, on or at the body and arranged to filter blood clots from at least a portion of fluid passing through the body, and therefore into the blood pump. The cannula is preferably arranged to be mounted between a patient's left ventricle and an implantable blood pump. Also disclosed is a filter and a heart assist device, such as a blood pump, incorporating a filter to prevent blood clots from entering the blood pump.07-22-2010
20100185044DEVICES AND METHODS FOR ASSISTING HEART FUNCTION - Devices and methods for assisting heart function. In at least one embodiment of a device for assisting heart function, the device comprises at least two electromagnetic plates having an inner surface, a cardiac processor electrically coupled to at least one of the at least two electromagnetic plates, a bladder having an inner chamber, the bladder attached to an inner surface of at least one of the at least two electromagnetic plates, a source of gas in communication with the inner chamber of the bladder, and at least one catheter having a proximal end and a distal end and having a lumen therethrough, the at least one catheter defining at least one aperture positioned therethrough at or near the distal end of the at least one catheter and comprising a pericardial balloon coupled to the at least one catheter at or near the distal end of the at least one catheter, the proximal end of the at least one catheter in communication with the inner chamber of the bladder.07-22-2010
20120142997DEVICE AND METHOD FOR CONNECTING A BLOOD PUMP WITHOUT TRAPPING AIR BUBBLES - An apparatus and a method for connecting medical tubing or any other type of fluidic circuit conduits (e.g., cannulae) to a ventricular assist device (“VAD”) or any other pumping device used for blood pumping during cardiac circulatory support for vascular surgery. The apparatus and the method prevent air bubbles from entering a cardiac circulatory support system when connecting cannulae to a VAD that may later enter the blood stream of a patient during cardiac surgery, and also provide for purging any air bubbles that may have entered the cardiac circulatory support system during a cannulae-VAD connection.06-07-2012
20120142996IMPLANTABLE DRIVER WITH NON-INVASIVE TRANSMURAL POWERING DEVICE FOR CARDIAC ASSIST AND COMBINED ASSIST AND SUPPORT DEVICES - The present invention an implantable, sub-cutaneous, bellows-like device with one plate proximal (or superficial) to the skin surface and the other plate distal (or deep) to the skin surface having a component of a pneumatic/hydrulic driver for an implantable medical device such as a cardiac assist, cardiac support, or combined cardiac assist and support device and inducible magnet material on the distal plate of the bellows that can be magnetically drawn towards the proximal plate by the action of a magnet outside the body to contract the bellows or pressurize the fluid in the bellows.06-07-2012
20100152524MODULAR MAGNETO MECHANICAL DEVICE - An electromechanical device has a rotor, a stator, and a module that at least partially houses the rotor. During normal operation of the electromechanical device, the stator is positioned external to and separate from the module.06-17-2010
20100240944BLOOD PUMP, MEDICAL APPARATUS HAVING A BLOOD PUMP AND METHOD FOR ASSISTING THE POSITIONING OF A BLOOD PUMP - The invention relates to a blood pump and a medical apparatus having a blood pump, which is provided for insertion into the heart of a patient. The blood pump has at least one imaging sensor disposed in the region of the distal end of the blood pump to obtain imaging information in a blood vessel or in the heart. The invention also relates to a method for assisting the positioning of a blood pump in the heart of a patient, wherein image information is recorded inside the body of the patient using the at least one imaging sensor of the blood pump and transmitted in real time to an image processing and playback facility disposed outside the body of the patient for display purposes.09-23-2010
20110112353BIFURCATED OUTFLOW CANNULAE - A bifurcated cannula for directing blood into the arterial system. The bifurcated cannula including an ingress channel and first and second egress channels. The first egress channel directs a first portion of the blood entering the bifurcated cannula into the arterial system in a first direction. The second egress channel directs a second portion of the blood entering the bifurcated cannula into the arterial system in a direction that opposes the first direction.05-12-2011
20100222635MAXIMIZING BLOOD PUMP FLOW WHILE AVOIDING LEFT VENTRICLE COLLAPSE - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump.09-02-2010
20100222632PREVENTION OF AORTIC VALVE FUSION - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump.09-02-2010
20100210895Guidable Intravascular Blood Pump and Related Methods - An improved intravascular blood pump and related methods involving the broad inventive concept of equipping the intravascular blood pump with guiding features such that the intravascular blood pump can be selectively positioned at a predetermined location within the circulatory system of a patient.08-19-2010
20080293996SYSTEMS AND METHODS FOR VOLUME REDUCTION - Systems and methods are provided for reducing the effective volume of a cardiac ventricle. A ventricular volume reduction system may include a containment system or container body deliverable through a catheter into the ventricle, with the containment system or container body being fillable to occupy space within the ventricle. A ventricular volume reduction system may include a partition that sequesters a portion of the ventricle and separates it from the flow path of blood in the ventricle. Methods for reducing the effective ventricular chamber volume may include placement of the containment system, the container body or the partition within the ventricle.11-27-2008
20120142995RADIOPAQUE CANNULA MARKER - A method is disclosed of applying a radiopaque marker to a cannula for use with an intracardiac pump, the method including: obtaining a band of radiopaque polymer material; placing the band around an outer diameter of the cannula, the cannula including a flexible tubular wall formed around and supported by a coil of shape memory material; placing a heat shrink tube around the band and the cannula; heating the band and the polymer tube to: soften the band, cause the heat shrink tube to shrink and apply force on the softened band towards the cannula, and cause the softened band to be welded to the cannula to form a radiopaque marker in a portion of the tubular wall; and removing the heat shrink tube.06-07-2012
20100222634BLOOD FLOW METER - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump.09-02-2010
20090112050TRANSSEPTAL CANNULA, TIP, DELIVERY SYSTEM, AND METHOD - A transseptal cannula assembly for directing blood from the heart of a patient and a minimally invasive method of implanting the same. The transseptal cannula assembly includes a flexible cannula body having proximal and distal portions with a lumen therebetween, a tip coupled to the distal portion of the flexible cannula body, and first and second anchors coupled to the tip. The anchors can be configured to be deployed from a contracted state to an expanded state and are configured to engage opposite sides of the heart tissue when in the expanded state. The anchors resist movement of the cannula assembly along a lengthwise central axis of the flexible cannula body.04-30-2009
20090112049HEART PUMP APPARATUS AND METHOD FOR BEATING HEART SURGERY - Apparatus for assisting a surgeon in procedures involving the heart and methods of employing such apparatus are provided. The apparatus can include a pump, and a first fluid conduit having a distal end adapted to be inserted into the superior vena cava of a beating heart, a second fluid conduit having a distal end adapted to be inserted into the inferior vena cava, and a third fluid conduit having a distal end adapted to be inserted into the pulmonary artery of the beating heart, each in liquid fluid communication with the pump, which in combination can be operatively positioned to form a closed cardiac pathway extending from the vena cavae and to the pulmonary artery to thereby convey blood collected from the vena cavae into the pulmonary artery, operatively bypassing the right side of the heart. The pump is positioned to both convey blood flow from each vena cavae and to the third fluid conduit and to provide a blood reservoir which enables the provision of manual assistance to the blood flow to the lungs when blood flow is insufficient.04-30-2009
20120035413SYSTEM FOR CONNECTING A BLOOD PUMP WITHOUT TRAPPING AIR BUBBLES - A system for connecting medical tubing or any other type of fluidic circuit conduits (e.g., cannulae) to a ventricular assist device (“VAD”) or any other pumping device used for blood pumping during cardiac circulatory support for vascular surgery. The system prevents air bubbles from entering a cardiac circulatory support system when connecting cannulae to a VAD that may later enter the blood stream of a patient during cardiac surgery, and also provide for purging any air bubbles that may have entered the cardiac circulatory support system during a cannulae-VAD connection.02-09-2012
20110112354ARTIFICIAL HEART CONTROL DEVICE, ARTIFICIAL HEART SYSTEM AND ARTIFICIAL HEART CONTROL METHOD - Provided is an artificial heart control device for controlling a blood pump which assists flow of blood in a heart, the artificial heart control device including: a timing detection part which is configured to detect reference timing within a cardiac cycle of the heart; and a blood pump control part which is configured to control a rotational speed of the blood pump, wherein the blood pump control part controls, with reference to the reference timing detected by the timing detection part, the rotational speed of the blood pump such that the rotational speed becomes a rotational speed corresponding to a predetermined control pattern. According to the present invention, it is possible to provide an artificial heart control device, an artificial heart system and an artificial heart control method which can provide a load control optimum for the recovery of functions of a patient's own heart.05-12-2011
20110034754DEVICES AND METHODS FOR ABSORBING, TRANSFERRING AND DELIVERING HEART ENERGY - A device for altering cardiac performance includes an energy absorbing element which absorbs cardiac pumping energy from at least a portion of the heart. The energy may be delivered to another part of the body, such as another portion of the heart, to perform useful work such as providing blood pumping assistance.02-10-2011
20110130619VENTRICULAR ASSIST DEVICE AND RELATED METHODS - A method and system are provided for percutaneously gaining access to oxygenated blood with one or more anastomosis devices and pumping such oxygenated blood directly to the aorta adjacent to the right atrium or left atrium via a VAD system. In one embodiment, a VAD system can be implanted with open surgery.06-02-2011
20110009688METHOD FOR MAKING A BLOOD PUMP - A method of making a blood pump comprises selecting a desired flow pattern in a pumping chamber defined by an extensible bladder wherein the flow pattern is based generally on blood flow in a natural heart, using an initial computer model of the desired flow pattern to determine the material composition and dynamic operation conditions of each portion of the bladder, designing a bladder and pump operating system, computer modeling the actual design, testing and refining the design, and constructing a prototype based thereon. The desired flow pattern includes guiding and directing the flow of blood through the pumping chamber by reason of the action of an expansile bladder on the blood flow. A continuous circular or spiral fluid path is obtained that more effectively washes all areas of the bladder including the inlet and discharge ports with blood to reduce thrombosis.01-13-2011
20110040140Apparatus Comprising a Drive Cable for a Medical Device - An article comprising a drive cable suitable for high-speed operation in an anatomy having small-radii bends is disclosed. The drive cables disclosed herein include one or more physical adaptations that enable them to be “tuned” to avoid large amplitude vibrations during operation.02-17-2011
20110245582Method and System for Closed Chest Blood Flow Support - A method of providing a pumping system for assisting a human patient's heart and providing a blood pump to be disposed outside the patient's body is disclosed. The blood pump has an inlet and an outlet. An inlet cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump inlet to provide blood to the blood pump. An outlet perfusion cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump outlet to provide blood to the patient's vascular system. The blood pump includes a control system to control the blood pump. The control system includes at least two control units for redundant control of the blood pump, and each control unit includes a watchdog for monitoring the control unit.10-06-2011
20110124950Heart Assist Apparatus - The apparatus for implantation into a human heart comprises a pump (05-26-2011
20110087063TWO PIECE ENDOVASCULAR ANASTOMOTIC CONNECTOR - An anastomotic connector comprising an endovascular component including a vascular conduit and a supply conduit and a cannula component. The vascular conduit has first and second ends that are configured to reside within a vascular structure. The supply conduit has proximal and distal ends, where the distal end fluidicly connects to the vascular conduit between the first and second ends. The cannula component, which also includes proximal and distal ends, is received by the supply conduit.04-14-2011
20100056849METHOD AND DEVICE FOR THE INTERMITTENT OCCLUSION OF A VEIN DRAINING THE ORGAN SYSTEM - In a method for the intermittent occlusion of a vein draining the organ system, in which the vein is occluded by an occlusion device, the fluid pressure in the occluded vein is continuously measured and stored, the behaviour of the fluid pressure is determined as a function of time, and the occlusion of the vein is triggered and/or released as a function of at least one characteristic value derived from the pressure measurements, pressure is applied during the occlusion in a pulsating manner. The device for the intermittent occlusion of a vein, including an occlusion device, a pressure measuring device for continuously measuring the fluid pressure in the occluded vein, and a memory for storing the fluid pressure behaviour as a function of time, means are provided for applying a pulsating pressure in the occluded vein.03-04-2010
20110152600IMPLANTABLE HEART ASSIST SYSTEM - A heart assist system having an implantable pump conveying blood between two vascular locations and an extracorporeal system providing power and control signals to the pump. The system also includes a communication link having an implantable portion coupled to the implantable pump, an extracorporeal portion coupled to the extracorporeal system and an isolation portion between the implantable portion and the extracorporeal portion that minimizes the transmission of movement and forces from the extracorporeal portion to the implantable portion.06-23-2011
20100249489Intraventricular blood pumps anchored by expandable mounting devices - An intraventricular blood pump is retained in position by an expandable stent placed in the aorta that anchors to the aortic wall. The pump ejects blood across the aortic valve either through a conduit or as a free stream of blood without a mechanical conduit passing between the valve leaflets. The ejection of blood causes a reactive force pushing the pump towards the ventricular apex and away from the valve. Thus, the pump may be held by three filaments connecting it to the anchoring stent. Other flexible members such as a tube made of pericardium, sutures, or a rigid rod may be used to hold the pump in place. The preferred embodiment includes an apically introduced stent anchored aortic valve having two flexible tissue leaflets and a conduit channeling blood from the pump in the ventricle into the aortic root and passing through the non-coronary sinus in the position usually occupied by the non-coronary cusp of the aortic valve. This device can be surgically implanted through a small incision without the need for cardiopulmonary bypass in elderly or severely ill patients who cannot safely undergo more invasive surgery. Pumps using durable bearings and hermetically sealed motors are combined with tissue valves such that the entire device is durable for many years.09-30-2010
20110251450Method and Device for Attachment of an Inflow Conduit to the Heart and to a Pump - Apparatus connects a pump to a chamber of a heart. A cuff attaches to the heart, the cuff having a flange portion for attaching to a surface of the heart and a sleeve portion extending from the flange portion. An inflow conduit has a first end for inserting into the heart, an intermediate portion for attaching to the sleeve portion of the cuff, and a second end for conveying blood from the heart to the pump. An expansion tool is releasably mounted with the inflow conduit to slide longitudinally within the inflow conduit. The expansion tool has a blunt tip for punching through the heart into the chamber at a distal end and a manual grip at a proximal end for pulling the expansion tool out from the inflow conduit. The expansion tool has a sliding seal substantially adjacent the blunt tip so that after punching into the heart and joining the inflow conduit to the sleeve portion of the cuff, the expansion tool can be withdrawn from the inflow conduit resulting in gradual entry of blood into the first end and withdrawal of air from the second end.10-13-2011
20110152599METHOD FOR FORMING A BLOOD FLOW IN SURGICALLY RECONSTITUTED SEGMENTS OF THE BLOOD CIRCULATORY SYSTEM AND DEVICES FOR CARRYING OUT SAID METHOD - The invention relates to clinical cardiology and cardiovascular surgery. The method for forming a blood flow in research stands and in surgically reconstructed segments of the blood circulation system comprises diagnosing the individual condition of a patient's blood circulation system; measuring the blood flow velocity field in the heart chambers and great vessels; comparing the parameters measured against the physiological norm; determining parameters forming a swirled blood flow; and modeling an individual swirled blood current in the blood circulation system being diagnosed, the streamlined surfaces and guide elements of flow channels of the blood circulation system reconstructed being given shapes conforming to the flow lines of the restored normally swirled blood flow in accordance with formulas:06-23-2011
20110009687CATHETER TO ASSIST THE PERFORMANCE OF A HEART - In a catheter (01-13-2011
20110178361PHYSIOLOGICALLY RESPONSIVE VAD - A ventricular assist device incorporating a rotary pump such as a rotary impeller pump implantable in fluid communication with a ventricle and an artery to assist blood flow from the ventricle to the artery. The device includes a pump drive circuit supplying power to the pump, one or more sensors for sensing one or more electrophysiological signals such as electrogram signals in and a signal processing circuit connected to the sensors and to the pump drive circuit. The signal processing circuit is operative to detect the sensor signals and control power supplied to the pump from the pump drive circuit so that the pump runs in a pulsatile mode, with a varying speed synchronized with the cardiac cycle. When an arrhythmia is detected, the pump drive circuit may also run the pump in an atrial arrhythmia mode or a ventricular arrhythmia mode different from the normal pulsatile mode.07-21-2011
20100004501VENTRICULAR ASSIST DEVICE AND RELATED METHODS - A method and system are provided for percutaneously gaining access to oxygenated blood with an anastomosis device and pumping such oxygenated blood to other arterial regions of the vascular system via an LVAD system. In one embodiment, a system may include an anastomosis device extending through an opening of the atrial septum. A filament may be coupled to the anastomosis device. A snare device may access the right atrium through the superior vena cava, grasp the filament, and withdraw the filament through the superior vena cava. The filament may then be used as a guide to direct a catheter, a conduit or some other structure into the right atrium of the heart via the superior vena cava. A flow path may be defined between the anastomosis device and an arterial location, such as in the aorta, such that at least some oxygenated blood may by-pass the left ventricle and be discharged into the aorta.01-07-2010
20120203056ANATOMIC FIT OF A PERCUTANEOUS VAD FOR RIGHT HEART SUPPORT - An apparatus is disclosed including: a cannula having a shape closely matched to the anatomy of the right ventricle of the human heart, where the cannula has an outflow port configured to be located proximal the pulmonary artery and an inflow port located proximal the inferior vena cava. In some embodiments, the cannula is a close fit to the anatomy of at least 90%, 95%, or more of the population.08-09-2012
20120277520TRANSCUTANEOUS MAGNETIC ENERGY TRANSFER DEVICE - Transcutaneous magnetic energy transfer to drive a VAD or other implanted medical device can be supplied through two spinning (or otherwise moving) permanent magnets, or a moving permanent magnet and a moving ferric material, or a moving permanent magnet and a coil or an array of coils, One part is implanted under the patient's skin, so that the skin does not have to be broken for a connection to take place.11-01-2012
20090118568Implantable counterpulsation cardiac assist device - A hollow tubular element is inserted in the descending aorta. The caudad end contains a pressure sensitive passive or preferably, hydraulically or electrically activated, unidirectional valve. A flexible diaphragm situated in a rigid shell affixed over an opening in the element wall divides the shell interior into first and second variable volume chambers. The first chamber opens to the artery. A continuously operating electrical pump is connected to the second chamber through a closed hydraulic system including a multi-valve chamber. The valves regulate fluid flow to the second chamber in accordance with electrical signals from the heart. Fluid flow is directed to the second chamber during cardiac diastole and away from the second chamber during cardiac systole, causing the device to function in a counterpulsation mode. The work of the heart is decreased and coronary blood flow is increased to promote the formation of new coronary collateral channels and the perfusion of the heart itself. In the event of mechanical failure, pre-implantation heart function is not impeded.05-07-2009
20090118567PURGE-FREE MINIATURE ROTARY PUMP - Methods and systems are provided for the circulation of blood using a purge-free miniature pump. In one embodiment, a pump is provided that may comprise a housing including a rotor and a stator within a drive unit. In this embodiment, the pump may establish a primary blood flow through the space between the drive unit and the housing and a secondary blood flow between the rotor and stator. In another embodiment, a method is provided for introducing the pump into the body and circulating blood using the pump.05-07-2009
20110257462ACTIVE OR PASSIVE ASSISTANCE IN THE CIRCULATORY SYSTEM - Apparatus and methods for assisting flow of a fluid in a conduit. In some embodiments, a viscous impeller rotating within a protective cage provides a boost and total pressure to blood within the circulatory system of an animal.10-20-2011
20110257463PULSATILE AND NON-INVASIVE DEVICE FOR CIRCULATORY AND HAEMODYNAMIC ASSISTANCE - The present invention relates to a non-invasive pulsatile circulatory assistance device encouraging the circulation of a volume of blood in a subject's body, the device being characterized in that it comprises: 10-20-2011
20110257461VENTRICULAR FUNCTION ASSISTING DEVICE AND A METHOD AND APPARATUS FOR IMPLANTING IT - The present invention provides a ventricular function assisting device configured to be implanted in a heart ventricle designed in a form of flower-like configuration comprising two or more petals attached at a base section, said petals comprise elastic elements and/or portions capable of being elastically bent in radial directions and optionally also in sideway and/or longitudinal directions, which allow changing the state of the device between: i) a folded conformation, in which its petals are radially pressed inwardly towards each other to assume a reduced diameter of its flower-like configuration; and ii) a deployed conformation, in which the petals are opened in a radial outward direction as the device is discharged from the delivery tube or sheath into a heart ventricle and implanted thereinside in a preloaded state.10-20-2011
20080319248Hydraulically Actuated External Pulsation Treatment Apparatus - There is provided a non-invasive pulsation and counterpulsation medical treatment apparatus for treating reduced cardiac output in heart patients. A flexible cuff is passed over the patient's lower body and/or extremities, and is attached a hydraulic actuator. Through a mechanical linkage, the actuator sequentially tensions and releases the cuff, thereby sequentially compressing and releasing pressure on the patient, and thereby augmenting the patient's blood pressure. The actuator includes a hydraulic cylinder that axially extends and retracts a shaft. A curved plate on the apparatus supports the patient's body or extremity in a fixed position during the treatment. A pressure sensor in the cuff transmits pressure data to an operator or electronic processor. Based on physiological data continuously obtained from the patient, various treatment parameters may be changed during the patient's treatment by an attending clinician or by a computer processor controlling the treatment.12-25-2008
20110054239Pulsatile Control System for a Rotary Blood Pump - A system for controlling the speed of a rotary blood pump. The system oscillates the speed of the pump to produce pulsed pressure at the outlet of the pump. The speed is oscillated synchronously with the natural cardiac cycle. The natural cardiac cycle is determined using a pulsatility index calculated from the back EMF produced by the pump or an impedance sensor.03-03-2011
20110021864Biphasic and Dynamic Adjustable Support Devices and Methods with Assist and Recoil Capabilities for Treatment of Cardiac Pathologies - The present invention provides methods and direct cardiac contact diastolic recoil device to improve diastolic recoil of a heart and includes a biocompatible film attached to or enclosing one or more structural elements that store elastic energy during heart contraction and release energy during heart filling.01-27-2011
20110021865Left and Right Side Heart Support - A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.01-27-2011
20100121132CARDIAC DEVICE AND METHODS OF USE THEREOF - Devices and methods are described herein which are directed to the treatment of a patient's heart having, or one which is susceptible to heart failure, to improve diastolic function.05-13-2010
20110137108SENSORLESS FLOW ESTIMATION FOR IMPLANTED VENTRICLE ASSIST DEVICE - A method of estimating the blood flow rate of a heart ventricle assist device which is positioned externally of, or implanted in, a patient. The assist device comprises a blood pump having a rapidly rotating, electrically powered impeller, and comprises briefly interrupting power to the impeller to cause its rotation to slow. From this, blood viscosity can be estimated, which viscosity is used to obtain real time, estimated blood flow rates and pressure heads. Apparatus for accomplishing this is disclosed.06-09-2011
20090171137INTRAVASCULAR BLOOD PUMP AND CATHETER - An intravascular system for pumping blood from a chamber of a heart and through an associated blood vessel coupled in fluid communication therewith. The system includes a pump device configured to be inserted into a blood vessel. The system further includes a catheter having a proximal end coupled to the pump device and a distal end configured to collect blood within or exiting from the chamber. The catheter further includes a pre-formed shape corresponding to the vessel to at least assist with stabilization and positioning of the pump device in the vessel.07-02-2009
20110071338HEART ASSIST DEVICE WITH EXPANDABLE IMPELLER PUMP - An impeller includes a hub and at least one blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as pumping blood within a patient. A blood pump may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient's body.03-24-2011
20110071336HARD-WIRED IMPLANTED CONTROLLER SYSTEM - A circulatory assist system is disclosed, the system including an implantable electrical device having an electric motor, an implantable controller connected to the implantable electrical device, and an implantable power source connected to the controller for supplying power to the controller. The controller is attachable to a first side of a percutaneous connector. A second side of the percutaneous connector, opposite to the first side, allows external connectivity to said controller.03-24-2011
20110184224SELF-CONTAINED HEART PUMP, AND METHOD IMPLEMENTED IN SUCH A PUMP - A heart pump includes: 07-28-2011
20110201871HEART HELP DEVICE, SYSTEM, AND METHOD - An implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle is provided. The device comprises at least one pump device having a pump. The pump comprising: a piston adapted for reciprocating movement, an operating device for operating the piston, a heart contacting organ. The movement of the piston assists the pump function of the heart through said heart contacting organ.08-18-2011
20110201870HEART HELP PUMP, SYSTEM AND METHOD - The present invention relates to a heart pump apparatus comprising a turbine pump for assisting the heart of a human patient. The invention is based on the realization that a turbine without a centre axis would improve the capacity of the heart help pump apparatus. The present invention also relates to a turbine pump system for assisting the heart of a human patient. The present invention also relates to operation methods and methods for surgically placing a rotating body of a turbine pump and a stator of a turbine pump in a patient.08-18-2011
20110218383PORTABLE CONTROLLER AND POWER SOURCE FOR MECHANICAL CIRCULATION SUPPORT SYSTEMS - A portable external device for a mechanical circulation support system includes first and second power sources, e.g. batteries and control electronics for redundant uninterrupted operation of an implantable blood pump. The control and power source module may be configured for variable form factors to accommodate a variety of wearable configurations for patient convenience and comfort.09-08-2011
20110218382Auto-regulated R-Wave Synchronized Intraventricular Balloon Pump Heart Assist Device - Embodiments of the disclosed technology comprise an intraventricular balloon pump to help a dilated heart or ventricle push forward the stagnant stroke volume to the systemic circulation. The balloon fills simultaneously with the contraction of the ventricle. Since blood finds its way of least resistance, the easiest exit is through the aortic valve, against a closed mitral valve. The system is designed to be totally implantable, with a less invasive insertion and maintenance procedure than is known in the prior art.09-08-2011
20100222636CARDIOMYOPATHY TREATMENT DEVICE WITH ELECTRODE THERAPY - This invention relates to implantable heart sack that can be equipped with pacemaker leads and/or defibrillation leads for the treatment of cardiomyopathy, hypertrophic cardiomyopathy tachycardia, bradycardia, ventricular fibrillation, atrial fibrillation etc. The heart sack was prepared from biocompatible, biostable, implantable polyetherurethane, polycarbonateurethane, silicone, polysiloxaneurethane, polyfluoroethylene, or hydrogenated poly(styrene-butadiene) copolymer. The heart sack is equipped with attached sutures to make it easier to attach onto the heart. The heart sack can be made semipermeable or perforated to have numerous holes. The heart sack can be reinforce with fiber or filament. Ordinary pacemaker leads can be attached to the inner side of the heart sack. However, the pacemaker leads of this invention were prepared from noble metal (gold, platinum, rhodium and platinum-Rhodium alloys) or stainless steel coated, deposited or plated mono-filaments, yarns, braids, cords, wires or films, or cylindrical tubes of polyamide, polyimide, polyester, and/or polypropylene that are encased in multi-lumen insulating tube or coaxial tube made of biocompatible, biostable, implantable polyetherurethane, polycarbonateurethane, silicone, polysiloxaneurethane, polyfluoroethylene, or hydrogenated poly(styrene-butadiene) copolymer. The leads can be mounted onto the inner surface of the heart sack and contoured to the heart. The heart sack can be coated with hydrophilic coating containing an antimicrobial agent that gives the heart sack a low coefficient of friction, excellent biocompatibility and antimicrobial properties.09-02-2010
20120041254Housing for a Functional Element - The invention relates to a housing (02-16-2012
20120041255Method And Apparatus For Long-Term Assisting A Left Ventricle To Pump Blood - A method and apparatus for long-term assisting the left ventricle of a heart to pump blood is disclosed which includes at least one transluminally deliverable pump and a transluminally deliverable support structure which secures the at least one pump within the aorta for long-term use.02-16-2012
20120209057LOCKABLE QUICK COUPLING - The invention relates to a simply lockable quick coupling (08-16-2012
20120046515ASSEMBLY AND METHOD FOR STABILIZING A PERCUTANEOUS CABLE - A percutaneous cable is attached to a mechanical cardiac pump and is passed through the skin. Sutures can be used to stabilize the cable against movement to prevent disturbing tissue surrounding cable and thereby reduce the incidence of infection. A funnel-shaped tubular device can be used where the cable exits the skin to allow the cable to flex below or near the skin surface as may be desired to accommodate physical activity of a patient. An anchor can be attached to the cable and implanted below the skin surface to stabilize the cable against movement. The anchor can include any one or a combination of a flat mesh material, a bundle of ultrafine filaments, and a barbed filament.02-23-2012
20120046514IMPLANTABLE BLOOD PUMP - An implantable blood pump includes a housing defining an inlet opening and an outlet opening. Within the housing, a dividing wall defines a blood flow conduit extending between the inlet opening and the outlet opening of the housing. The blood pump has a rotary motor that includes a stator and a rotor. The stator is disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator.02-23-2012
20120004496CANNULA LINED WITH TISSUE IN-GROWTH MATERIAL AND METHOD OF USING THE SAME - A cannula for moving fluids between a pump and the circulatory system of a patient. The cannula includes a liner having an intermediate portion between a proximal portion and a distal portion, and a lumen extending between the proximal and distal portions. At least the intermediate portion of the liner is constructed from a tissue in-growth material for supporting the growth of endothelial cells. A jacket surrounds at least part of the liner.01-05-2012
20120004495IMPLANTABLE HEART ASSIST SYSTEM AND METHOD OF APPLYING SAME - An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and methods of using same. One embodiment provides a vascular graft that has a first end that is sized and configured to couple to a non-primary blood vessel and a second end that is fluidly coupled to a pump to conduct blood between the pump and the non-primary blood vessel. An outflow conduit is also provided that has a first end sized and configured to be positioned within the same or different blood vessel, whether primary or non-primary, through the vascular graft. The outflow conduit is fluidly coupled to the pump to conduct blood between the pump and the patient. The vascular graft may be connected to the blood vessel subcutaneously to permit application of the extracardiac pumping system in a minimally-invasive procedure.01-05-2012
20120010455Attachment Method - Preparing the heart for connection with a ventricular assist device (VAD) can include attaching an attachment ring to a ventricular apex of the heart. The attachment ring optionally includes a seal or a valve to allow the procedure to be performed with or without a heart-lung bypass. A valve can be temporarily attached to the attachment ring. Tissue is removed from the ventricular apex through the attachment ring to form a hole through which an inflow conduit of the VAD can be inserted. A slit can first be made in the ventricular apex to facilitate removal of the tissue. A clamp can be closed around the attachment ring to secure the inflow conduit.01-12-2012
20120065457FLUID PRESSURE GENERATING MEANS - A fluid pressure generating means (03-15-2012
20120016178Rotary Pump with Hydrodynamically Suspended Impeller - A pump assembly 01-19-2012
20120022316Method and Apparatus for Preventing Air Embolisms - Method and apparatus for preventing air embolisms during surgical procedures which involves providing a fluid source in communication with an aperture extending into an anatomical cavity such that fluid may be delivered into the cavity when a condition of negative pressure exists in the cavity, thereby preventing the introduction of air into the cavity.01-26-2012
20120310036BLOOD PUMP - A blood pump has a hollow body in which an impeller with a spiral blading produces an axial propulsion of blood along the impeller, as well as an at least partly actively stabilized magnetic bearing device and a hydrodynamic bearing device for the impeller. The impeller may be set into a rotation about a rotation axis of the impeller with a motor stator located outside the hollow body. The hollow body has an inlet for the flow of blood into the hollow body in an inflow direction which is essentially parallel to the rotation axis, and an outlet for the outflow of the blood out of the hollow body in an outflow direction which is offset to the rotation axis of the impeller to produce a non-zero outflow angle (α) between the inflow direction and the outflow direction. A total artificial heart can be formed from two such blood pumps.12-06-2012
20120059213Cannula Systems and Methods - Disclosed herein is a cannula assembly for directing the flow of material from an organ chamber, e.g., blood from the left chamber of the heart, and methods of placing the cannula assembly in fluidic communication with the chamber. The cannula assembly includes an elongate tubular member and a coupling assembly disposed at the distal end of elongate tubular member. The elongate tubular member includes a lumen extending from a distal opening at the distal end to a proximal opening at the proximal end. The coupling assembly includes a retaining element and a retention member configured to cooperate with each other and with the portion of the organ wall surrounding the opening in the wall to couple or anchor cannula system to the wall and to provide fluidic communication between the distal opening of the elongate tubular member and the organ chamber.03-08-2012
20120059214Active hydraulic ventricular attaching support system - An active hydraulic ventricular attachable support system includes a net cover for surrounding a ventricle and is formed by hollow tubes. All the hollow tubes can completely communicate with each other or form a plurality of independent areas, and the interior of each independent area is intercommunicating, while the independent areas are not communicating with each other. The system as a whole is positioned on the surface of the heart. The hollow tubular structure can be filled with various kinds of liquid of different physical characteristics, and then the corresponding reaction pressure generated can be applied to the ventricle and the surfaces of the heart. The system also can be incorporated with local administration.03-08-2012
20120059212CONDUIT DEVICE FOR USE WITH A VENTRICULAR ASSIST DEVICE - The present invention is a conduit device designed to be placed within a wall of a heart, such as through a prepared opening or hole in the heart wall. The conduit is hollow and extends to form a sleeve over a portion of the heart pump, such as a VAD, which traverses the heart wall and enters a chamber of the heart. The conduit provides for a simplified and noninvasive approach to removal and/or replacement of the heart pump.03-08-2012
20100191035Percutaneous Intra-Aortic Ventricular Assist Device - A percutaneous intra-aortic ventricular assist device is adapted for implantation in an aorta that has a luminal wall, and includes a tubular stent body, an inner tubular body, a vane member, a carrier member, a rib unit, a first pulled string, a second pulled string, an alternately pulling mechanism, and a synchronizing member.07-29-2010
20120157756VENTRICULAR ASSIST DEVICE - A ventricular assist device includes a case, a pair of blood bags and a squeezing unit. The blood bags are installed inside the case. Each of the blood bags includes an inlet port connected to a ventricle of a heart to introduce therethrough blood flowing out from the ventricle, an internal space formed to store the blood introduced through the inlet port and an outlet port connected to an artery to discharge therethrough the blood stored in the internal space. The internal space has a variable volume. The squeezing unit is installed inside the case. The squeezing unit is configured to alternately squeeze the blood bags in such a way that, if one of the blood bags is squeezed to discharge the blood, the other blood bag is inflated to draw the blood.06-21-2012
20120157753TRANSCUTANEOUS ENERGY TRANSFER SYSTEM WITH MULTIPLE SECONDARY COILS - A transcutaneous energy transfer (TET) system is provided having a plurality of secondary coils adapted for disposition in a patient, at least one primary coil configured to transmit transcutaneous energy, and a controller adapted for disposition in a patient. The controller includes circuitry to isolate the secondary coils from each other and direct electric current from at least one of the secondary coils to a charge storage device and/or implantable medical device.06-21-2012
20120157754COMPACT BATTERY AND CONTROLLER MODULE FOR A TRANSCUTANEOUS ENERGY TRANSFER SYSTEM - A compact implantable controller and battery module for a transcutaneous energy transfer (TET) system is provided having a single biocompatible housing encasing an energy storage device, a power control module, and a device control module. The power control module controls energy transfer to the storage device during charging and monitors power consumption of a cardiac assist device. The device control module controls and monitors the operation of a cardiac assist device.06-21-2012
20120157755METHOD AND APPARATUS FOR ACCURATELY TRACKING AVAILABLE CHARGE IN A TRANSCUTANEOUS ENERGY TRANSFER SYSTEM - Improved devices and methods for tracking power consumption and available charge in a transcutaneous energy transfer (TET) system are provided. The method includes measuring the available charge in a battery and the current rate of power consumption in an implanted medical device, determining the remaining time before the charge level of the battery reaches a predetermined threshold level, and communicating the remaining time to a user.06-21-2012
20110071337HEART ASSIST DEVICE - A ventricular assist device comprising a housing defining an interior space, at least two ports opening into said interior space, and at least one pump for pumping blood between the ports through said interior space, the ports and interior space providing a continuous blood flow path that is not interrupted by valves.03-24-2011
20110092761Ventricular function assisting devices and methods of use thereof - Devices and methods are provided for assisting in the ventricular function of a treated heart, and tools for delivering and attaching elements of said devices to the wall of the heart. In general the devices are designed to assist in the ventricular function of the heart by utilizing elastic, and/or magnetic, elements designed to apply radially and/or tangentially directed forces over the wall of the heart, and/or alter the pressure conditions inside ventricle(s) of the heart. Embodiments may utilize restrictive elements which may optionally be attached over the heart during the implantation procedure, or at a later time, by changing the mode of operation of an implanted device.04-21-2011
20110065978Axial flow blood pump - An axial flow rotary blood pump including an impeller adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring supporting a plurality of blades, and a hydrodynamic bearing that operates at least axially and radially in respect of an axis of rotation of the impeller.03-17-2011
20120232331THERAPEUTIC AND SURGICAL TREATMENT METHOD FOR PROVIDING CARDIOPULMONARY AND CIRCULATORY ASSIST DEVICE - The present disclosure relates to a therapeutic method for improving the hemodynamics, the overall microcirculation in organs, and the restoration and preservation of deficient endothelial function in a patient, the method includes maintaining blood circulation in the patient's veins and arteries and temporarily relieving the heart of its pumping function. Relief may be accomplished by increasing the preload of the right ventricle so as to improve oxygenation of the myocardium and its contractility, reducing and diffusing regular pulsations in the proximity of the aortic root so as to improve the hemodynamics of the left ventricle of the heart, and/or mechanically stimulating the endothelium by shear forces so as to reduce systemic and pulmonary afterload.09-13-2012
20120130152ROTATION DRIVE DEVICE AND CENTRIFUGAL PUMP APPARATUS USING THE SAME - A centrifugal blood pump apparatus includes an impeller provided in a blood chamber, a plurality of permanent magnets provided in the impeller, and a plurality of sets of magnetic materials and coils provided in a motor chamber for driving the impeller to rotate with a diaphragm interposed therebetween. The plurality of permanent magnets are aligned with a gap therebetween in a rotation direction of the impeller. Accordingly, if the weight of the permanent magnets is maintained at a constant value, a magnetic field can be strengthened even with a wide motor gap due to the diaphragm, as compared to an example where there is no gap between the permanent magnets.05-24-2012
20120130151DEVICES, SYSTEMS, AND METHODS TO FACILITATE HEART FUNCTION - Devices, systems, and methods for accessing tissue, including the internal and external tissues of the heart, are disclosed. At least some of the embodiments disclosed herein provide access to the internal and external tissues of the heart to assist heart function. In at least one embodiment, a suction/infusion catheter is used to deliver gas to a pericardial space surrounding a heart.05-24-2012
20100174131Reduced Diameter Axial Rotary Pump for Cardiac Assist - The pump is of an axial flow rotary type suitable for implantation into the human heart or vascular system. The pump has an elongate tubular casing (07-08-2010
20120172657HEART ASSIST SYSTEM - A supplemental blood flow system for assisting with blood circulation in a patient. The system includes a supplemental blood flow device implantable in the patient and a controller for directing electrical power to the supplemental blood flow device and controlling the flow rate of blood through the device. The controller includes first and second power inlets and a power outlet. The power outlet is adapted to be coupled to an electrical line leading to the supplemental blood flow device. A portable programming module may be coupled to at least one of the first and second power inlets and operable to allow pump operating parameters stored in the controller to be changed according to the needs of the patient.07-05-2012
20120172654VENTRICULAR ASSIST DEVICE - A ventricular assist device includes an intravascular blood pump and a collapsible frame. The collapsible frame receives the blood pump therein and is movable between a collapsed state and an expanded state. The collapsible frame engages an interior wall of a body cavity when in the expanded state and is retrievable from the body cavity in the collapsed state.07-05-2012
20120172656PERCUTANEOUS HEART PUMP - A heart pump and a catheter assembly therefor are provided that include a flexible catheter body having a proximal end and a distal end, the catheter body having a plurality of lumens therethrough. The catheter body can be sufficiently flexible to extend from a peripheral access to a patient's heart. The catheter assembly can also include an impeller assembly having an impeller and a housing. The impeller assembly can be coupled with the flexible catheter body such that a tensile force applied to opposite ends of the catheter assembly enhances the security of the connection between the catheter body and the impeller assembly.07-05-2012
20120172655IMPELLER HOUSING FOR PERCUTANEOUS HEART PUMP - Disclosed herein are heart pumps that include a catheter assembly and that can be applied percutaneously. Some embodiments include a locking device that prevents components of the catheter assembly from being separated when in use. The catheter assembly can include an expandable tip. In some embodiments, the catheter assembly includes a housing having a wall structure, a portion of which can have a bulbuous shape or can be deformable. In other embodiments, the housing can be configured to reduce fluttering or deflection of the housing and/or to maintain a gap between the housing and an impeller blade disposed therein.07-05-2012
20080262288Physiologic pulsatile pump - A pulsatile blood circulating pump system that is adapted for use in cardiopulmonary bypass, ventricular assist (LVAD, RVAD, BiVAD), ECMO, organ preservation, fetal cardiac bypass, cancer treatment, and various areas of circulation research, which can be controlled in such a way as to produce a desired blood flow that closely approximates the physiological blood flow of the patient. The pump system includes a pulsating mechanism having a housing defining a chamber within which a compressible-expandable bladder is sealably mounted. The system further includes a hydraulic actuator having a pressure imparting member that acts upon a pressure transmissive fluid contained within the actuator chamber in a manner to generate a pulsatile pressure on the transmissive fluid, which, in turn, results in a pulsatile pressure being exerted on bladder in a manner to controllably vary the volume thereof. Additionally, the system includes a compact, highly reliable voice-coil motor that is operably associated with the hydraulic actuator for controllably moving the pressure imparting member within the fluid chamber and further includes a fully programmable motion controller that controls the voice-coil motor. Further, the system includes a programmable touch-screen component that functions to control the motion controller.10-23-2008
20100298625Multi-lumen Cannula - This document relates to methods and materials for providing blood flow for a blood pump recipient. For example, cannulae that can be connected to the circulatory system of a mammal and can be used in conjunction with a blood pump (e.g., an assist device) are provided.11-25-2010
20120178985PERCUTANEOUS HEART PUMP - A heart pump is provided that comprises an elongate catheter body, an impeller disposed at the distal end of the elongate catheter body, and one or more bearings positioned between the catheter body and the impeller. A fluid supply line for delivering infusant into the catheter is provided. A fluid return line for transporting infusant out of the catheter is also provided. A pump assembly for regulating the infusant flow along the fluid supply line and fluid return line is provided as part of an infusion system.07-12-2012
20120178986PERCUTANEOUS HEART PUMP - Disclosed herein are heart pumps that can include a catheter body and an impeller coupled with a distal end of the catheter body. The impeller can include a tip that is resealable or that includes a resealable member. The heart pump can also include a diffuser disposed between the distal end of the catheter body and the impeller, wherein the diffuser includes a flow directing surface.07-12-2012
20120220815Pump-Inflow-Cannula, A Pump-Outflow-Cannula And A Blood Managing System - The invention relates to a pump-inflow-cannula (08-30-2012
20100292528 Wrap for a Heart Assist Device - A heart assist device in which an inflatable balloon or chamber is held against an outside surface of a curved arterial vessel by a wrap (11-18-2010
20120253103CENTRIFUGAL BLOOD PUMPS WITH REVERSE FLOW WASHOUT - Blood pumps used as heart assist devices are commonly powered by an external battery and control system. If the external power is interrupted, such as by damaging an external cable, patients will have backflow across the pump. If the flow is too high, they may decompensate and die. If the backflow is relatively low, patients can survive until power is restored, but their blood pump must be sufficiently washed to prevent thrombus. Centrifugal blood pumps have been designed for good pumping performance, low blood damage, and avoidance of thrombus when they are running. The present invention recognizes the need to also provide enough washing to prevent thrombus when the pump power is turned off. The invention provides centrifugal pumps with triple or quadruple volute designs, or with axial flow impellers on the same shaft as the centrifugal pump impeller to help drive the rotor in reverse and enhance washing even with relatively low backflow. Also, in the preferred embodiment the centrifugal rotor is supported by low friction mechanical blood immersed bearings, to avoid contact of the rotor with the housing that creates small poorly washed crevices where thrombus can form.10-04-2012
20120226096VENTRICULAR CUFF - In one general aspect, an implant includes a cuff defining an opening configured to receive a cannula coupled to a heart pump. The implant includes a coupling mechanism having a first position and a second position, the cuff being uncoupled from the cannula in the first position and the coupling mechanism coupling the cuff to the cannula in the second position. The implant includes a locking mechanism configured to secure the coupling mechanism in the second position, and the locking mechanism is configured to be moved to a locked position after the coupling mechanism is in the second position.09-06-2012
20080300447Dual-Pulsation Bi-Ventricular Assist Device - A ventricular assist device is disclosed which comprises a sac for wrapping around a portion of a heart, the sac having one or more inflatable chambers for compressing the heart when the chambers being inflated and a blood outlet made to an aorta, the blood outlet being the sole opening in the human blood path in the vicinity of heart, wherein during a systolic phase the inflatable chambers inflate while blood flows out of the aorta through the blood outlet, and during a diastolic phase the inflatable chambers deflate while blood flows into the aorta through the blood outlet.12-04-2008
20120265003TRANSCUTANEOUS ENERGY TRANSFER COIL WITH INTEGRATED RADIO FREQUENCY ANTENNA - Improved methods and devices for communicating via radio frequency (RF) in transcutaneous energy transfer (TET) systems is provided. In particular, an improved implantable coil for use in a transcutaneous energy transfer (TET) system is provided having an integrated radio frequency (RF) antenna. Further, a method of communicating between an external device and an implanted device having a plurality of secondary coils with integrated RF antennas is also provided.10-18-2012
20120271096Disposable blood pump and catheter - A blood pump for cardiac assist is made up from a catheter having a collapsible outer delivery tube and an inner suction tube that can be collapsible as well. The diameter of the tubing is reduced at the entry point to the body an a hole in the side of the delivery tube provides blood flow to the organs downstream from the catheter insertion point. The catheter is connected to an elastic tubing loop which forms a peristaltic pump when stretched over rotating arms equipped with rollers.10-25-2012
20110237863MAGNETICALLY-LEVITATED BLOOD PUMP WITH OPTIMIZATION METHOD ENABLING MINIATURIZATION - A magnetically-levitated blood pump with an optimization method that enables miniaturization and supercritical operation. The blood pump includes an optimized annular blood gap that increases blood flow and also provides a reduction in bearing stiffness among the permanent magnet bearings. Sensors are configured and placed optimally to provide space savings for the motor and magnet sections of the blood pump. Rotor mass is increased by providing permanent magnet placement deep within the rotor enabled by a draw rod configuration.09-29-2011
20100191036NONDESTRUCTIVE FLUID TRANSFER DEVICE - Fluid transfer device may be configured as a vacuum pump particularly suited for nondestructive transfer of fluids, including blood and blood constituents. Fluid transfer device may be used for assisting in the pumping of blood through a patient's heart for reducing the load on the patient's heart, so that sheer forces are reduced, and blood pressure on the inner walls of the heart is reduced. Pump may be used as an implanted cardiac assist device, such as an aortic assist device, a ventricular assist device, or as a complete artificial heart. Industrial applications include the pumping of fluids, including destructible fluids such as foodstuff with or without food constituents of various sizes within the foodstuff. Food and other fluids may be stored until they are dispensed. By use of a vacuum, the inventive fluid transfer device may be operated at no more than atmospheric pressure. In addition, a pre-charged pressure tank may be used dependent on the application requirements, such as in the case where fluid pressure of the pumped fluid, including the backpressure of body fluids, in the case where pressure greater than atmospheric is required to sufficiently expel pumped fluid.07-29-2010
20130012761VENTRICULAR PUMP COUPLING - A device and method for creating a connection with the left ventricle of a heart are provided. A seal member capable of moving between a folded position and an open position is attached to the end of a conduit. An introducer capable of moving between a first and second position allows for the expansion of the seal member into an open position. A clamp component is positioned outside of the heart to provide an axial clamping force with the wall of the heart so that a seal is created between the seal member and the wall of the heart.01-10-2013
20110160518Method and System for Closed Chest Blood Flow Support - A system for assisting flow of blood by a patient's heart. The system includes a transseptal cannula adapted to be inserted percutaneously in the vascular system and extend through the atrial septum from the right atrium to the left atrium. The system includes a blood pump mechanism having a blood pump for pumping blood received from the transseptal cannula that has been oxygenated at specified flow rates over a range of physiological pressures. The blood pump is connected to the transseptal cannula. The system includes a perfusion cannula adapted to be inserted percutaneously in the vascular system for returning oxygenated blood to the atrial system of the patient. The perfusion cannula is connected to the blood pump.06-30-2011
20110160517System for heart assist, cannula and method - A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.06-30-2011
20110160516Mobility-Enhancing Blood Pump System - A blood pump system includes a first implantable housing, an implantable blood pump independent from the first implantable housing, and a percutaneous extension. The first implantable housing includes a rechargeable power storage device. The implantable blood pump supplements the pumping function of a heart. The rechargeable power storage device supplies electrical power to the implantable blood pump. The percutaneous extension is coupled to the rechargeable power storage device and adapted to traverse the skin. The percutaneous extension is configured to releasably connect to an external power supply adapted to provide power for recharging or supplementing the rechargeable power storage device to power the implantable blood pump.06-30-2011
20130172660METHODS, DEVICES AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM - Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a blood flow conduit while the heart is in systole and expel the blood into the blood flow conduit and the artery while the heart is in diastole.07-04-2013
20080234537Extracardiac Blood Flow Amplification Device - Apparatus (09-25-2008
20080234536Implantable peristaltic pump to treat erectile dysfunction - A method is provided for controlling blood flow through a blood vessel of a subject. The method includes implanting a pump outside of the blood vessel and placing within the blood vessel an expansion element that is capable of expanding the blood vessel subsequent to compression of the blood vessel by the pump. Other embodiments are also described.09-25-2008
20130178694APICAL RING FOR VENTRICULAR ASSIST DEVICE - An apical ring for coupling a conduit of a ventricular assist device to a heart has an annular disk with a central aperture for receiving the conduit. A collar is axially aligned with the central aperture and has a cylindrical shape interrupted by a gap between first and second ends of the collar. The collar has a fixed section joined to the annular disk and has a cantilever section extending from the fixed section to the first end of the collar. A tightener selectively drives the first end toward the second end to close the gap in order to retain the conduit within the collar. The cantilever section includes a relief slot that is expandable for extending a circumferential length of the cantilever section in response to interacting with the conduit when the gap is closed.07-11-2013
20130172661TRANSSEPTAL CANNULA, TIP, DELIVERY SYSTEM, AND METHOD - A cannula assembly, further comprising a cannula body for directing blood from the heart of a patient, having distal and proximal ends and a lumen therebetween. A tip coupled to the distal end of the body, the tip having an opening. A pump for drawing blood into the cannula assembly and dispensing the blood from the cannula assembly and into the patient circulatory system. The lumen of the cannula body further comprises a first inner diameter at the proximal end and a second inner diameter at the distal end, the first inner diameter being larger than the second inner diameter. A tapered portion defined as a decrease in inner diameter from the first inner diameter to the second inner diameter between the proximal and distal ends, the tapered portion configured to prevent cavitation of the blood within the cannula.07-04-2013
20130102834SLIDE DEVICE, MECHANICAL SEAL, ROTARY DEVICE, PUMP AND AUXILIARY ARTIFICIAL HEART SYSTEM - Provided is a slide device which can reduce a frictional force more than a conventional slide device when used in an aqueous liquid containing a blood component. In a slide device which includes: a fixed-side slide member having a slide surface; and a rotary-side slide member having a slide surface, the slide device being used in an aqueous liquid containing a blood component in a state where the slide surface of the fixed-side slide member and the slide surface of the rotary-side slide member face each other in an opposed manner, at least one of the fixed-side slide member and the rotary-side slide member is formed of a member which is made of a material which contains silicon and has hydrate of silicon oxide on the slide surface thereof.04-25-2013
20130102835ANISOTROPIC REINFORCEMENT AND RELATED METHOD THEREOF - Anisotropic reinforcements and synthetic materials are provided in which the fibers, mesh, weave, or otherwise interlaced or networked components thereof are oriented in one direction so as to create greater stiffness and/or tension in the one direction of the patch relative to other directions of the reinforcement. Methods of producing such anisotropic reinforcements are provided. The anisotropic reinforcements are advantageously suitable for the surgical repair of incisions, openings, defects, etc. of the cardiovascular system and allow healing to occur while preserving mechanical function, particularly ventricular function.04-25-2013
20110218385PORTABLE CONTROLLER WITH INTEGRAL POWER SOURCE FOR MECHANICAL CIRCULATION SUPPORT SYSTEMS - A portable external device for a mechanical circulation support system includes first and second power sources, e.g. batteries and control electronics for redundant uninterrupted operation of an implantable blood pump. The control and power source module may be configured to accommodate a variety of wearable configurations for patient convenience and comfort.09-08-2011
20110218384PORTABLE CONTROLLER WITH INTEGRAL POWER SOURCE FOR MECHANICAL CIRCULATION SUPPORT SYSTEMS - A portable external device for a mechanical circulation support system includes first and second power sources, e.g. batteries and control electronics for redundant uninterrupted operation of an implantable blood pump. The control and power source module may be configured to accommodate a variety of wearable configurations for patient convenience and comfort.09-08-2011
20080200750Polymer encapsulation for medical device - A rotary blood pump comprising an impeller suspended hydrodynamically within pump housing by thrust forces generated by said impeller during movement in use of said impeller as it rotates about an impeller axis, and the driving torque of said impeller is derived from the magnetic interaction between permanent magnets within the blades of said impeller and windings within said housing, and wherein said windings are encapsulated by a first fluid resistant polymer material, and said housing is at least partially made of a second polymer material that encapsulates said first polymer material.08-21-2008
20110275884FLUID PUMP WITH A ROTOR - The invention relates to a fluid pump, in particular to a liquid pump having a rotor (11-10-2011
20110275883PERCUTANEOUS GAS-LINE - A percutaneous gas-line (11-10-2011
20110275882VALVE FOR VENTRICULAR ASSIST DEVICE - A ventricular-assist-device valve includes two flaps hinged to a peripheral wall by means of a couple of flexible struts. As each flap opens and closes during each cycle of operation, the struts flex and open passages for flow around them, around the flaps, and between the struts and the flaps, so as to prevent the formation of dead zones that contribute to the accumulation and deterioration of blood cells that produce clotting. The struts are tensioned so as to exert a pressure against the flow of the blood stream when the flaps are open. This tension creates a pressure differential between the underside and the peripheral regions of the flaps that forces blood flow around the hinges and washes out stagnant cells. As a result, clotting is materially reduced.11-10-2011
20130150654CANNULA RING AND RELATED SYSTEMS AND METHODS - Cannula devices and related methods are provided. In accordance with one embodiment, a cannula ring includes a body portion having a substantially cylindrical member defining an opening therethrough. A plurality of anchor arms coupled with the body portion and configured to be positioned in a first, collapsed state and a second, deployed state, wherein the anchor arms each include a free end that is radially displaced from the body portion while in the second, deployed state relative to their positions while in the first, collapsed state. Suture rings and other associated structures and devices are also described.06-13-2013
20120259157Cannula Systems and Methods - Disclosed herein is a cannula assembly for directing the flow of material from an organ chamber, e.g., blood from the left chamber of the heart, and methods of placing the cannula assembly in fluidic communication with the chamber. The cannula assembly includes an elongate tubular member and a coupling assembly disposed at the distal end of elongate tubular member. The elongate tubular member includes a lumen extending from a distal opening at the distal end to a proximal opening at the proximal end. The coupling assembly includes a retaining element and a retention member configured to cooperate with each other and with the portion of the organ wall surrounding the opening in the wall to couple or anchor cannula system to the wall and to provide fluidic communication between the distal opening of the elongate tubular member and the organ chamber.10-11-2012
20130158338Dual Lumen Cannula - A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.06-20-2013
20130184514PRESSURE ACTUATED SINGLE-LUMEN BLOOD PUMPING DEVICE - A pressure actuated single-lumen blood pumping device has a housing (07-18-2013
20130123569BLOOD FLOW CONTROL ELEMENT - Apparatus for treating obstructive blood flow disorders, is provided, including (05-16-2013
20110313238FLUID DELIVERY SYSTEM AND METHOD FOR MONITORING FLUID DELIVERY SYSTEM - A fluid delivery system includes an electric motor, a pump driven by the electric motor, and a control system. The control system is programmed to supply a variable voltage to the electric motor, to sense a response of a current of the electric motor to the variable voltage, and to obtain frequency domain information about the response of the current of the electric motor.12-22-2011
20110313237MEDICAL DEVICE OR INSTRUMENT HAVING POROUS STRUCTURE - The present invention relates to an inflow cannula for blood circulatory assist devices, having a robust structure and possessing a thrombus anchoring effect. Furthermore, the inflow cannula for blood circulatory assist devices does not deform or exhibit loss of dimensional accuracy during the manufacture process. These features are achieved by a porous structure formed of one or more linear elements or of a porous shaped article.12-22-2011
20130190551DRIVELINE CABLE ASSEMBLY - A blood pump assembly includes a blood pump configured for implantation and a cable assembly for providing power and control signals to the blood pump. The cable assembly includes a strain relief assembly and a driveline. The strain relief assembly secures the cable assembly to the blood pump and has an outer surface that is curved along a longitudinal extent of the strain relief assembly at least along an outer peripheral side of the outer surface. The strain relief assembly defines a compartment and an internal passage that leads to the compartment. The driveline houses a plurality of conductors that extend from the driveline through the internal passage and into the compartment.07-25-2013
20120029266ANISOTROPIC REINFORCEMENT AND RELATED METHOD THEREOF - Anisotropic reinforcements and synthetic materials are provided in which the fibers, mesh, weave, or otherwise interlaced or networked components thereof are oriented in one direction so as to create greater stiffness in the one direction of the patch relative to other directions of the reinforcement. Methods of producing such anisotropic reinforcements are provided. The anisotropic reinforcements are advantageously suitable for the surgical repair of incisions, openings, defects, etc. of the cardiovascular system and allow healing to occur while preserving mechanical function, particularly ventricular function.02-02-2012
20120029265INTRAVASCULAR VENTRICULAR ASSIST DEVICE - One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.02-02-2012
20130096364PUMP AND METHOD FOR MIXED FLOW BLOOD PUMPING - A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub.04-18-2013
20120088954Cardiac Pump - The pump is of an axial flow rotary pump, suitable for implantation into the human heart or vascular system, and comprises an elongate tubular casing (04-12-2012
20120095281PUMPING BLOOD - A blood pump includes a rotor having a flared portion downstream proximate a downstream bearing that supports the rotor. The flared portion of the rotor includes a width greater than a width of an upstream portion of the rotor. A blood pump also includes a housing having an internal wall with a flared portion downstream of a motor stator and proximate a transverse outlet.04-19-2012
20120095280HEART PUMP CONTROLLER - A controller for a heart pump, the controller including a processing system for determining movement of an impeller within a cavity in a first axial direction, the cavity including at least one inlet and at least one outlet, and the impeller including vanes for urging fluid from the inlet to the outlet, causing a magnetic bearing to move the impeller in a second axial direction opposite the first axial direction, the magnetic bearing including at least one coil for controlling an axial position of the impeller within the cavity, determining an indicator indicative of the power used by the magnetic bearing and causing the magnetic bearing to control the axial position of the impeller in accordance with the indicator to thereby control a fluid flow between the inlet and the outlet.04-19-2012
20130211182Cardiac Patterning for Improving Diastolic Function - Cardiomyopathy may be treated by distributing a space-occupying diastole-assist agent within the myocardium or within the cardiac venous system in a pattern about one or more chambers of the heart, such that the space-modifying agent integrates into and thickens at least part of the cardiac wall about the chamber so as globally to reduce wall stress, stabilize or even reduce chamber size, and/or improve diastolic function. Some patterns also cause a beneficial global reshaping of the chamber. These changes occur quickly and are sustainable, and have a rapid and sustainable therapeutic effect on cardiac function. Patterns of distribution of space-occupying agent within the myocardium for global resizing may also be used or augmented to treat localized conditions such as myocardial infarctions, overt aneurysm of the ventricular wall as typically forms in response to large transmural myocardial infarctions, and mitral regurgitation due to a noncompliant mitral valve. These techniques may also be used to treat localized conditions that may not yet have progressed to cardiomyopathy.08-15-2013

Patent applications in class CARDIAC AUGMENTATION (PULSATORS, ETC.)

Patent applications in all subclasses CARDIAC AUGMENTATION (PULSATORS, ETC.)