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Measuring fluid pressure in body

Subclass of:

600 - Surgery

600300000 - DIAGNOSTIC TESTING

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DocumentTitleDate
20100049082DATA MINING SYSTEM FOR NONINVASIVE INTRACRANIAL PRESSURE ASSESSMENT - Systems and methods are described for noninvasively assessing an intracranial pressure of a patient. Some embodiments include providing a simulation model with a measured arterial blood pressure of the patient. Some embodiments further include providing the simulation model with a measured cerebral blood flow velocity of the patient. The simulation model correlates arterial blood pressure values, cerebral blood flow velocity values, and intracranial pressure values. Some embodiments further includes determining an intracranial pressure of the patient based on the simulation model. Some embodiments further includes creating an output data set indicative of the determined intracranial pressure.02-25-2010
20090299216SYSTEM, APPARATUS AND METHOD FOR BIOMEDICAL WIRELESS PRESSURE SENSING - An implantable polymer-based pressure sensor featuring an electrical LC-tank resonant circuit for passive wireless sensing without power consumption on the implanted site. The sensor is microfabricated with parylene to create a flexible coil substrate that can be folded for smaller physical form factor during implantation, and can be stretched back without damage for enhanced inductive sensor-reader coil coupling. Data received from the sensor can be enhanced to provide improved pressure measurements at increased distances.12-03-2009
20080319340System for Monitoring Neural Shunt Function and Associated Methods - A system and method for evaluating neural shunt functionality is provided. Accordingly, in one aspect a method for monitoring neural shunt functionality may include measuring a first intracranial pressure pulse inside the shunt, measuring a second intracranial pressure pulse outside the shunt, and comparing pulsatile characteristics from the first measurement to the second measurement in order to determine shunt functionality.12-25-2008
20130079662STANDARDIZED MEASUREMENT OF PHYSIOLOGICAL PRESSURES USING AN AIR-CHARGED CATHETER APPARATUS - Systems and methods are provided for providing a standardized pressure value representing a transient pressure event within a region of interest within a living body. An air-charged catheter is configured to record pressure data representing the region of interest. A measurement assembly includes a parameter calculation component configured to calculate at least a peak pressure representing the transient pressure event and a time to peak pressure, representing the time necessary to reach the peak pressure, from the recorded pressure data. A standardization component is configured to calculate the standardized pressure value as a function of the peak pressure and the time to peak pressure. A user interface is configured to display at least the standardized pressure value at an associated display.03-28-2013
20090318828SYSTEM AND METHOD FOR A NON-INVASIVE BLOOD PRESSURE MONITOR - A non-invasive blood pressure system is disclosed herein. The non-invasive blood pressure system includes a pressure transducer configured to obtain pressure data comprising a transient baseline effects component. The non-invasive blood pressure system also includes a processor adapted to receive the pressure data from the pressure transducer. The processor is configured to generate a transient baseline effects model, and to implement the transient baseline effects model to at least partially remove the transient baseline effects component of the pressure data. The removal of the transient baseline effects component from the pressure data eliminates a potential source of error and thereby enables a more accurate blood pressure estimate.12-24-2009
20090156960PRESSURE SENSING VALVE - A pressure sensing catheter having a pressure sensor and an antenna that is coupled to the pressure sensor, e.g., by a connector, are provided. The pressure sensor can be adapted to measure a pressure surrounding the catheter, and the antenna can be adapted to telemetrically communicate the measured pressure to an external device. In an exemplary embodiment, the antenna, pressure sensor, and/or connector are hermetically sealed, e.g., by the catheter and/or a coating, to prevent the antenna, pressure sensor, and connector from coming into contact with fluid, thereby allowing the catheter to be permanently implanted or otherwise used for long term use. Exemplary methods for manufacturing and using pressure sensing catheters are also provided.06-18-2009
20100106051SINGLE LUMEN CATHETER WITH SEPARATE TUBES THEREIN - A catheter is provided that includes multiple passages within a catheter body. These passages are arranged in a way so as to maximize the usable space within the catheter body. More specifically, multiple tubes are positioned within a central lumen of the catheter. Both the tubes and the central lumen are used as passages for various functionality of the catheter, such as communication of air or fluids. By sharing the free space within the central lumen of the catheter, the flow area of this passage is maximized as compared with simply using an extruded lumen for each passage. Hence, the catheter can allow the addition of more passages than similarly sized prior art catheters.04-29-2010
20090306539PRESSURE SENSING CATHETER - This invention provides a pressure sensing catheter, and method for using the same, which eliminates the practitioners' need to fill the catheter with fluid manually prior to insertion, and thereby increases the accuracy and ease of the overall pressure-sensing procedure. The illustrative catheter includes, in its proximal end, a transducer base or housing that is permanently attached to the catheter shaft. The base includes, inserted thereinto, one or more miniaturized pressure transducer assemblies, which are in fluid communication with corresponding pressure lumens that extend down the shaft and are in communication with one or more predetermined balloons by discrete channels or ports, which provide a fluid passage between the interior space of the balloon and the corresponding pressure lumen. The integral assembly includes a predetermined, previously installed charge of fluid that extends from the transducer, through the corresponding pressure lumen and into the interior volume of the sensing balloon. The charge of fluid has been made free of any air bubbles at the point of manufacture, and is delivered fully charged, so that maximum sensing accuracy and minimum setup time are achieved. In alternate embodiments the catheter can include a fluid infusion/flushing lumen and port interconnected to a proximal fluid connection.12-10-2009
20090270759System and Method for Measuring the Pressure of a Fluid System Within a Patient - A pressure sensing apparatus has a pressure sensor component that includes a pressure sensing port, a pressure sensor for sensing a pressure of a fluid in the pressure sensing port, and a digital processor communicating with the pressure sensor for performing calculations involving fluid pressures sensed. The pressure sensing apparatus further includes a first chamber in fluid contact with the pressure sensing port, a second chamber fluidically connectable with a patient's cerebrospinal fluid system, and a membrane located between the first and second chambers so as to transmit fluid pressure from the second chamber to the first chamber.10-29-2009
20130066229NONINVASIVE METHODS FOR DETERMINING THE PRESURE GRADIENT ACROSS A HEART VALVE WITHOUT USING VELOCITY DATA AT THE VALVE ORIFICE - Embodiments presented herein provide apparatus and methods for imaging-assisted determination of pressure gradient of blood flow across a valve orifice in a cardiovascular circuit without the use of velocity data measured at the valve orifice. An embodiment of the methods comprise creating an image of a valve orifice, creating a planimeter slice from the image of the valve orifice including a trace of the perimeter of the valve orifice, determining the valve orifice area by determining the area contained within the trace, determining the instantaneous flow rate through the valve orifice based on bulk flow data away from the valve, and determining the instantaneous pressure gradient across the valve orifice from the valve orifice area and the instantaneous flow rate.03-14-2013
20090234245NON-INVASIVE MONITORING OF INTRACRANIAL PRESSURE - Methods, systems, and related computer program products for are described for non-invasive detection of intracranial pressure (ICP) variations in an intracranial compartment of a patient. Optical radiation is propagated transcranially into the intracranial compartment, and optical radiation that has migrated through at least a portion of the intracranial compartment and back out of the cranium is detected. At least one signal representative of the detected optical radiation is processed to extract therefrom at least one component signal that varies in time according to at least one of an intrinsic physiological oscillation and an externally driven oscillation in the patient. Examples of suitable intrinsic physiological oscillations include intrinsic respiratory and cardiac oscillations. Examples of suitable externally driven oscillations include ventilated respiratory oscillations and externally mechanically induced oscillations. The extracted component signal is then processed to generate an output signal representative of the ICP variations in the intracranial compartment.09-17-2009
20090012421Systems and methods for treating tissue regions of the body - Systems and methods deploy a therapeutic or diagnostic element into contact with a body tissue region. The systems and methods can sense position of the therapeutic or diagnostic element relative to a targeted tissue region without direct or indirect visualization, by sensing fluid pressure in a fluid path having an outlet located at or near the therapeutic or diagnostic element. The systems and methods can also inflate the therapeutic or diagnostic element during use, while taking steps to avoid over-inflation and/or while dynamically monitoring the pressure conditions within the expanded element.01-08-2009
20120041334DEVICE FOR MEASURING THE BLADDER PRESSURE - A device for measuring bladder pressure and/or for measuring intra-abdominal pressure within the body of a living being comprises a pressure measuring unit including a pressure sensor, and a urethral catheter comprising a balloon lumen, which connects a distal balloon for measuring internal pressure thereof to the pressure measuring unit, and a bladder lumen having a distal opening. The bladder lumen is, without detaching connectors, alternately connectable to a proximal urine outlet and separable therefrom, and the pressure sensor of the pressure measuring unit is connected to or is alternately connectable, without detaching connectors, to the bladder lumen.02-16-2012
20100249645Method of determining body exit of an ingested capsule - A method of determining body exit of an ingestible capsule comprising the steps of providing (09-30-2010
20120010525Compartment Syndrome Monitoring Systems and Methods - Embodiments of a compartment monitor that can be implanted and left in situ to continuously (or semi-continuously) measure compartment pressures are presented. An exemplary monitor includes a pressure sensor adapted to be implanted in a compartment, a transmitter external to the compartment and coupled to the pressure sensor, and a receiver in communication with the transmitter to receive and process pressure data received from the transmitter. The monitor may also be configured to transmit measured pressure data to a networkable device. The networkable device can then communicate the patient's status and condition to a healthcare provider through a local area network (LAN) or wide area network (WAN). This communication allows the healthcare provider to remotely monitor a patient. The networkable device, or associated computing system, can record and display trends in the pressure data over time, and log the data to the patient's electronic health records.01-12-2012
20110288436Materials and methods for insulating electronic components and services - A method for insulating an electronic component, comprising encapsulating the electronic component with an electrically insulating pouch having a first protective layer and a second electrically insulating layer, the first protective layer comprising a flexible polymeric material, the second electrically insulating layer comprising the parylene layer.11-24-2011
20110295147Gas Column Pressure Monitoring Device - The present invention provides a device for efficiently coupling a pressure monitoring device to a pressure transducer. In addition, the present invention reduces or eliminates the likelihood air will be unintentionally injected into the pressure monitoring device while connecting the pressure monitoring device to a pressure transducer. In one embodiment, the present invention includes a pressure monitoring coupler comprising a sealing member and a device body. The sealing member comprises a sealing flange connected to an engagement member. The engagement member includes a first and second O-ring positioned thereon. The device body comprises a pressurizing lumen and an intersecting monitoring lumen in communication with a receiving aperture. During use, a pressure monitoring catheter is inserted into a patient's tissue. The pressure monitoring catheter and a transducer are connected to the device body of the present invention. Thereafter, the sealing member is inserted into the device body while the pressure within the pressure monitoring catheter is maintained at or less than a state or equilibrium with the pressure applied by the tissue.12-01-2011
20110295146REMOTE PRESSURE SENSING SYSTEM AND METHOD THEREOF - The present invention relates to a monitoring system and method for use with a body of a subject. The system comprises a medical device, having a portion thereof configured to be placed inside the subject's body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen; at least two pressure sensors accommodated remotely from the subject's body at two different spaced-apart positions outside the subject's body and configured and operable to detect pressure at the two spaced-apart remote positions; said at least two pressure sensors being in fluid communication with at least one site inside the subject's body, a relation between the pressure at said at least one site and the pressures at said two spaced-apart remote positions being thereby indicative of the fluid pressure at said at least one site.12-01-2011
20080306403Method and Device for Determining the Hydrodynamics of the Cerebrospinal Fluid System - The present invention relates to a method and a device for determining the hydro-dynamic properties of the fluid system surrounding the brain and the spinal cord, the so called cerebrospinal fluid system, whereby the method comprises continuous pressure measurement through a fluid contact passage and active infusion of artificial cerebrospinal fluid through another fluid contact passage to a number of pressure-flow levels, and analysis of the connections between the measured pressures and flows. The method uses an adaptive way of procedure which on each pressure-flow level takes account for the measure time and the patient's fluctuations in physiologic signals for calculating in real time when the relation between the measure time and measure accuracy in pressure and flow on the actual pressure-flow level is sufficient and at an optimum, whereupon the investigation or examination is automatically proceeding to the next level according to a predetermined protocol. In this way, the method gives rise to an investigation with measurements having sufficient pressure and flow information on each level, which forms a base for determination in a correct manner, with an uncertainty estimate, of the patient's hydrodynamic parameters. The device comprises a hose pump (12-11-2008
20100113967CATHETER WITH PRESSURE SENSOR - A pressure sensor assembly is disclosed which includes a flaccid tube having two mounting sleeve members that bond the tube to a distal end of a catheter. The catheter includes an aperture located beneath the tube and in communication with an air passage. As the pressure outside the tube changes, the tube moves relative to the catheter body, thereby communicating that pressure change to the sealed air passage within the catheter. This air passage is connected to an external transducer that can measure this pressure change and thereby determine a pressure at the distal end of the pressure catheter.05-06-2010
20100113968CATHETER AIR MANAGEMENT SYSTEM - An air management system is described for removing and reintroducing a desired amount of air into an air passage of a pressure measurement catheter. More specifically, the system includes a cylindrical housing, check valves in communication with the housing and an moveable shaft with multiple sealing members along its length. As the shaft is moved within the housing, a piston member causes the residual air in the catheter air passage to be evacuated to a defined negative pressure. Further movement of the shaft causes a piston member to inject a predetermined volume of air into the catheter air passage. In this respect, periodic adjustments of the piston member returns the volume of air in a variable volume chamber to one that is unaffected by residual volume in the chamber and that provides an optimum volume of air to maximize the time the sensor can function accurately between recharging events.05-06-2010
20090062689System for processing of continuous pressure-related signals derivable from a human or animal body or body cavity - This invention describes a method for processing pressure signals derivable from locations inside or outside a human or animal body or body cavity. Different aspects of the invention relate to a method for optimal differentiating between cardiac beat- and artifact-induced pressure waves, a method for obtaining new and improved information from said pressure signals, a method for obtaining signals predicting pressures inside a body or body cavity from pressure signals outside said body or body cavity. In particular, this invention describes a system for sensing continuous pressures signals and displaying otput of processing according to the inventive methods.03-05-2009
20100087752ASSESSMENT OF URINARY SYSTEM FUNCTION BY PATTERN MATCHING - A system for monitoring urinary system operation comprises a sensor for detecting a level of one or more compounds in tissues of a subject's bladder. A processor identifies a pattern in a time variation of the level detected by the sensor. The processor generates an indicator of bladder function based at least in part on the identified pattern. In some embodiments the processor generates a possible diagnosis based upon the identified pattern and one or more pieces of additional information. The additional information may comprise one or more of: a residual amount of urine after urination; a maximum uroflow rate; and, a delay in onset of urination.04-08-2010
20100094163MEDICAL APPARATUS WITH A SENSOR FOR DETECTING A FORCE - The invention relates to a medical apparatus (04-15-2010
20100217150INTERCAVERNOSAL PRESSURE MEASURING INSTRUMENT AND METHOD - A user measures the intercavernosal pressure of a penis using an instrument held in one hand and axially pressing the instrument against a glans of a penis for a predetermined period. The instrument provides a visual readout indicating the intercavernosal pressure of the penis at the end of this period and includes an exterior display to indicate the measured intercavernosal pressure of the tested penis. The instrument and glans of the penis are disengaged when the readout is provided by the instrument. A control circuit for the display includes a pressure-measuring device within an interior of the instrument that interacts with an internal portion of a contact member upon the internal portion contacting the pressure-measuring device upon axially pressing an external portion of the contact member against the glans of the penis being tested.08-26-2010
20120197155Implantable Capacitive Pressure Sensor Apparatus and Methods Regarding Same - An implantable capacitive pressure sensor apparatus and method for making such an apparatus includes a first pressure sensor portion and a second pressure sensor portion. The first pressure sensor portion includes a diaphragm electrode connectable to ground (e.g., the diaphragm electrode being positioned in close proximity to the body when implanted therein such that the diaphragm electrode is deformable in response to pressure applied thereto by the body). The second pressure sensor portion includes a signal electrode (e.g., wherein the first pressure sensor portion and the second pressure sensor portion are coupled such that a gap is provided between the diaphragm electrode and the signal electrode) and an insulator material. The signal electrode is provided on and in direct contact with the insulator material to electrically isolate the signal electrode such that parasitic capacitance effects on the signal electrode are reduced.08-02-2012
20090143696SENSOR UNIT AND PROCEDURE FOR MONITORING INTRACRANIAL PHYSIOLOGICAL PROPERTIES - An anchor for an implantable sensing device, a sensor unit formed by the anchor and sensing device, and a surgical procedure for implanting the sensor unit for monitoring a physiological parameter within a cavity of a living body, such as an intracranial physiological property. The anchor includes a shank portion and a head portion. The shank portion defines a distal end of the anchor and has a bore defining an opening at the distal end. The head portion defines a proximal end of the anchor and has a larger cross-sectional dimension than the shank portion. The sensor unit comprises the anchor and the sensing device placed and secured within the bore of the anchor so that a sensing element of the sensing device is exposed for sensing the physiological parameter within the cavity.06-04-2009
20090062688Method for processing of continuous pressure-related signals derivable from a human or animal body or body cavity - This invention describes methods for processing pressure signals derivable from locations inside or outside a human or animal body or body cavity. The major aspect of the invention relates to methods for obtaining new and improved information from said pressure signals. The analysis output of said method may be presented in a variety of ways such as numerical values; trend plots of numerical values, histogram presentations or as a quantitative matrix, the presentation as a quantitative matrix is highlighted. Thereby completely new information about pressures is obtained. In particular, information about intracranial compliance is derived from the intracranial pressure (ICP) signal itself.03-05-2009
20090005703Medical Monitor User Interface - Methods and devices useful for monitoring a patient and for monitoring and displaying the value of a physiological parameter are disclosed. In one embodiment, a user interface for a medical monitoring device is provided. The user interface can have a monitoring screen with a current value screen and a trend screen. The current value screen can display a graphical representation of a value of a physiological parameter over time, e.g., over a first time period, and the trend screen can display a graphical representation of a mean value of the physiological parameter over time, e.g., over a second time period. The lengths of the time periods can be adjustable. In some embodiments, an out-of-limit condition for the physiological parameter can be indicated with shading. For example, the current value screen can display shading between a graph line representing the value of the physiological parameter over time and a threshold line which sets the alarm threshold. The trend screen can display shading between a trendline representing the value of the physiological parameter over time and another threshold line. In yet other embodiments, the user interface can provide an event marking screen. The event marking screen can provide the ability to mark events, e.g., the delivery of a drug to the patient, the adjustment of a sensor, and so on, on a historical trend screen that displays a value of the physiological parameter over time. Such event marking can enable a caregiver to correlate events to a change in a patient's condition as manifested by the physiological parameter.01-01-2009
20090326411METHOD FOR ANALYSING PRESSURE SIGNALS DERIVABLE FROM A BODY CAVITY - A method for analysing pressure-signals derivable from pressure measurements on or in a body of a human being or animal, includes the steps of sampling said signals and converting the signals to pressure-related digital data with a time reference, wherein the method comprises the further steps of: identifying from said digital data features related to absolute pressures relative to atmospheric pressure, recording repeatedly at specific time intervals, intermittently, in any reiterated manner, or continuously absolute pressure data to create a pressure trend plot against time, determining from said recording either a) a plurality of different pressure levels and duration thereof, or b) a plurality of different pressure changes of different levels and duration thereof, and presenting a) numbers of different pressure levels of various time durations in format of a matrix, or b) presenting numbers of different pressure change levels of various time durations in format of a matrix.12-31-2009
20090204019Combined Pressure and Flow Sensor Integrated in a Shunt System - A shunt system for implantation into a patient for diverting excess fluid from the lateral ventricles of the patient's brain to a diversion site. The present shunt includes a pressure transducer for measuring ICP, a rate of flow transducer for measuring the flow rate of the CSF flowing within the shunt, and telemetry circuitry. A remote reader with an antenna is provided to selectively interrogate and provide inductive power to the implanted shunt. Upon interrogation, the pressure and rate of flow measurements are calibrated, multiplexed and transmitted on a carrier signal back to the remote reader/antenna. The reader/antenna extracts the pressure and flow rate data from the carrier wave and further separates the data by demultiplexing the signal. The reader further includes a barometer for providing local barometric pressure and uses this information together with the data from the implanted transducers to calculate and display real-time adjusted ICP, CSF flow-rate within the shunt and brain compliance.08-13-2009
20110144530Pressure Sensing Adapter for Gastric Band System Injector - The body of a pressure sensing component includes a pressure sensor, a first opening, and a first pair of electrical contacts. A cap of the pressure sensing component comprises a second opening, a wiper seal, and a second pair of electrical contacts. The cap is rotatable relative to the body. When the cap is in a first rotational position, the first and second openings are in fluid communication with each other; and the first pair of contacts are not coupled with the second pair of contacts. When the cap is in a second rotational position, the seal isolates the first opening from the second opening; and the first pair of contacts are coupled with the second pair of contacts. The pressure sensing component may be coupled with a syringe and needle to externally adjust and monitor the pressure of fluid in an implanted gastric band system.06-16-2011
20090221933INTRA-ABDOMINAL PRESSURE MONITORING SYSTEM - Described herein are devices, systems, kits and methods for measuring intra-abdominal pressure (IAP) from a patient catheterized with a urinary catheter system. Devices may include a bypass lumen configured to connect to a pressure transducer, a sampling port connector connected to the bypass lumen, a drain tube housing configured to at least partially enclose a portion of the drain tube of a urinary catheter system, and a clamp mechanism. The sampling port connector may be configured for removable attachment to the sampling port of the urinary catheter system to form a fluid connection between the urinary catheter system and the bypass lumen of the IAP device. The clamp mechanism may be configured to controllably occlude the lumen of the urinary catheter system drain tube.09-03-2009
20090247899PRESSURE SENSOR FOR BIOLOGICAL FLUIDS AND USE THEREOF - A pressure sensor for connecting to a detector is provided. The pressure sensor comprises: an optical fibre, having a distal end with a distal plane for sensing pressure, a proximal end for communicating with a patch cord, and an In-fibre Bragg grating (FBG) therebetween; a housing, having a distal aperture, a proximal aperture and a bore therebetween, and sized to accept the optical fibre; an annular ring, forming a flexible seal between said optical fibre and housing at least distal to the FBG and a holder for retaining the housing. The FBG is housed in the housing such that in use, axial strain is transferred to said In-fibre Bragg grating housed within said housing by pressure exerted on the distal plane.10-01-2009
20080319339Measuring Member And Device For Determining The Blood Flow Of The Gastrointestinal Tract, As Well As For Registrating The Intestinal Peristalsis - The invention relates to a measuring member and a device to be used for determining the blood flow of the gastrointestinal tract, said measuring member comprising an intestinal probe, having its distal end provided with a flexible inflatable body and at least one pressure sensor mounted on this supporting body. After bringing the inflatable flexible body at the predetermined pressure, the pressure sensor will abut the intestinal wall and the measured pressure development, which represents a measure for the blood flow of the gastrointestinal tract, is transformed into a graphical image with the help of the device and/or is transformed into actual values for the blood flow of the gastrointestinal tract. Further, the measuring member measures the development of the pressure within the inflatable flexible body, which represents a measure for the intestinal peristalsis.12-25-2008
20090275856METHOD AND SYSTEM OF MEASURING IAP USING A NASO-ENTERIC TUBE - A method and apparatus for measuring the intra-abdominal pressure (IAP) within a patient having a naso-enteric tube. The system senses the IAP of the patient by means of a sensing conduit that is filled with a sensing fluid. The sensing fluid in the sensing conduit may be saline, water or feeding solution. After the sensing conduit is filled with the sensing fluid, the sensing conduit is elevated and a portion of the sensing fluid enters the patient. The remaining portion of the sensing fluid is related to the IAP and the IAP may be determined from the height of the sensing fluid within the sensing conduit.11-05-2009
20110060245DEVICE FOR MEASURING INTRACRANIAL PRESSURE IN NEWBORNS AND BABIES AND A SUPPORTING MEMBER FOR SAID DEVICE - The invention relates to medicine. The inventive device for measuring intracranial pressure in newborns and babies comprises a body, a supporting member with a leveling surface on the end face thereof, a movable bush which is provided with the supporting member coaxially attached thereto and which bush is arranged in the body so as to be capable of carrying out a limited reciprocating motion to produce a static load on the bregmatic fontanel, a rod with a flat base which is accommodated in the movable bush cavity so as to be capable of moving with respect to the supporting member and producing an impact action for deforming the bregmatic fontanel, a rod moving system provided with a measuring coil which is connected to a control, processing and display unit for converting a signal received from the measuring coil in order to determine the intracranial pressure and display the obtained results. The supporting member is designed in the form of a bush with a leveling surface on the end face and is provided on the outer side with a limiter of the deformation produced by the static load on the bregmatic fontanel, the leveling surface of the supporting member is projected beyond the contact surface of the limiter, wherein said contact surface is inclined to a plane which is tangent to the leveling surface in such a way that a distance between the contact surface and the tangent plane increases in the direction towards the periphery of the limiter of the deformation produced by the static load on the bregmatic fontanel.03-10-2011
20100152608CHRONICALLY IMPLANTED ABDOMINAL PRESSURE SENSOR FOR CONTINUOUS AMBULATORY ASSESSMENT OF RENAL FUNCTIONS - An implantable system for ambulatory monitoring of a high-risk heart failure patient includes a first pressure sensor implantable within an abdomen of the patient for sensing and generating an output representative of a baseline intra-abdominal pressure value of the patient and for chronically sensing and generating an output representative of an intra-abdominal pressure value of the patient at periodic intervals. At least one second implantable sensor is provided for sensing and generating an output representative of a second physiological parameter of the patient. Additionally, the system includes a processor for correlating the output of the first pressure sensor and the second physiologic sensor, and for comparing differences between the baseline intra-abdominal pressure value and subsequent intra-abdominal pressure values. The processor can reside in another implantable device or in an external device/system.06-17-2010
20120130273Non-Invasive Measurement Of Fluid Pressure In An Adjustable Gastric Band - A food intake restriction device for forming a restriction in a patient's gastro-intestinal tract and non-invasively communicating pressure data regarding the restriction to an external monitor. The device includes a food intake restriction device implanted substantially about a patient's gastro-intestinal tract to form a restricted opening in the tract. A port is connected to the restriction device. The port contains a working fluid for affecting the size of the restricted opening. A pressure sensing system communicates with the working fluid to measure the pressure of the working fluid. A transmitter communicates the measured fluid pressure to the external monitor.05-24-2012
20100113969CATHETER HAVING AN AUXILIARY LUMEN FOR USE WITH A FUNCTIONAL MEASUREMENT WIRE - The present invention relates to a surgical catheter, and more particularly, a balloon catheter having an auxiliary lumen configured to permit the advancement of a functional measurement wire to a treatment site. The auxiliary lumen communicates with a working lumen that is configured to permit the advancement of a guidewire and the functional measurement wire, so that the guidewire and functional measurement wire may selectively be advanced to the treatment site during a surgical procedure.05-06-2010
20090069711Devices for use in processing of continuous pressure-related signals derivable from a human or animal body or body cavity - This invention describes a method for processing pressure signals derivable from locations inside or outside a human or animal body or body cavity. Different aspects of the invention relate to a method for optimal differentiating between cardiac beat- and artifact-induced pressure waves, a method for obtaining new and improved information from said pressure signals, a method for obtaining signals predicting pressures inside a body or body cavity from pressure signals outside said body or body cavity. In particular, this invention describes devices for sensing continuous pressures signals and displaying otput of processing according to the inventive methods.03-12-2009
20130144185Devices and Methods for Noninvasive Measurement of Intracranial Pressure - Provided are systems and methods for noninvasively assessing intracranial pressure by controllably applanating at least a portion of a subject's ocular globe so as to collapse an intraocular blood vessel and correlating the collapse pressure to intracranial pressure. Also provided are ophthalmic components useful in ophthalmic imaging applications, as well as methods of assessing intracranial pressure that are based, at least in part, on the degree of papilledema, if any, present in the subject.06-06-2013
20100331724DETERMINING A CHARACTERISTIC BLOOD PRESSURE - The present disclosure relates to monitoring a characteristic physiological parameter of a patient during a suitable time period that either precedes or follows a triggering event, such as a clinician/patient interaction, that may negatively impact the physiological parameter. In some embodiments, physiological parameter values falling between one or more pre-set thresholds may be used to derive the characteristic physiological parameter. In some embodiments, tracking the physiological parameter may provide additional information about the patient's status. In some embodiments, confidence measures may be associated with, or may be used to analyze features of the patient signal to derive information about, the characteristic physiological parameter. The patient signal used to derive a patient's physiological parameter may be of an oscillatory nature or may include oscillatory features that may be analyzed to derive a characteristic respiration rate.12-30-2010
20100179449MINIATURE STENT-BASED IMPLANTABLE WIRELESS MONITORING DEVICES - A system is provided for the transmission of in vivo arterial pressure, the system comprising: an a pressure sensor whereby in vivo arterial pressure data is collected; a wireless transmitter, whereby the in vivo arterial pressure data is transmitted to be received disposed externally to a patient in which the system is disposed; a stent body, the stent body having an integral antenna, and a power source, whereby power is supplied to the system.07-15-2010
20110040206IN SITU OFFSET COMPENSATION FOR PRESSURE SENSORS - A pressure sensor having a substrate and a first, deformable membrane, partially supported by the substrate, which generates a first sensor reading when deformed by pressure. A second membrane is contiguous to the first membrane. When the second membrane is energized, it deforms the first membrane to alter the first sensor reading.02-17-2011
20110125052RESPIRATORY THERAPY SYSTEM INCLUDING A NASAL CANNULA ASSEMBLY - A nasal cannula, for supplying a respiratory gas to a patient, comprising: a pair of spaced apart supply lines which each have a head at one end thereof with a discharge opening therein. The opposite end of each supply line is connectable to a respiratory gas source. Each head is sized to be snugly received and retained within one of the nasal cavities of the patient while forming a sufficient leakage passage, between a portion of inwardly facing nasal cavity skin of a patient and a portion of an exterior surface of the head, to facilitate exhausting of any excess respiratory gas supplied to the patient through the leakage passage and also facilitate inhalation of any room air required in excess of the respiratory gas to be supplied to the patient. The invention also relates to a respiratory therapy system incorporating the nasal cannula, a method of treating a patient with sleep disorder by using the nasal cannula, a diagnostic tool for measuring nasal cavity pressure of a patient, and a method of using the diagnostic tool for measuring nasal cavity pressure of a patient.05-26-2011
20110125053Devices and Methods For Controlling Patient Temperature - Relatively non-invasive devices and methods for heating or cooling a patient's body are disclosed. Devices and methods for treating ischemic conditions by inducing therapeutic hypothermia are disclosed. Devices and methods for inducing therapeutic hypothermia through esophageal cooling are disclosed. Devices and methods for operative temperature management are disclosed.05-26-2011
20100262036SENSOR UNIT AND PROCEDURE FOR MONITORING INTRACRANIAL PHYSIOLOGICAL PROPERTIES - An anchor for an implantable sensing device, a sensor unit formed by the anchor and sensing device, and a surgical procedure for implanting the sensor unit for monitoring a physiological parameter within a cavity of a living body, such as an intracranial physiological property. The anchor includes a shank portion and a head portion. The shank portion defines a distal end of the anchor and has a bore defining an opening at the distal end. The head portion defines a proximal end of the anchor and has a larger cross-sectional dimension than the shank portion. The sensor unit comprises the anchor and the sensing device placed and secured within the bore of the anchor so that a sensing element of the sensing device is exposed for sensing the physiological parameter within the cavity.10-14-2010
20090216149SELF-CONTAINED, IMPLANTABLE, INTRACRANIAL PRESSURE SENSING DEVICE AND METHODS FOR ITS USE IN MONITORING INTRACRANIAL PRESSURE - A reliable and mass-producible microelectromechanical (MEMS)-based microwave intracranial pressure sensing device for use with a portable microwave monitor and methods for non-invasively monitoring intracranial pressure with this device are provided.08-27-2009
20100056952In Situ Pressure Monitor and Associated Methods - Methods, systems, and devices for detecting and quantifying pressure and pressure changes within a system are provided. In one aspect, a pressure sensing device is provided that includes a sensing tube having an interior volume and at least one wall, the wall being configured to deform in response to an external pressure that is greater than an external pressure threshold. The at least one wall is further configured to deform as a function of the external pressure. The device may also include a transducer operably coupled to the sensing tube, the transducer being configured to detect changes in the interior volume as a result of deformation of the at least one wall.03-04-2010
20100069785APPARATUS FOR PRESSURE SENSING - The present invention provides an apparatus for pressure sensing. The apparatus comprises a series of Bragg gratings and a light guide incorporating the series of Bragg gratings. The apparatus also comprises a plurality of moveable wall portions having opposite first and second sides. Each moveable wall portion is positioned so that a change in pressure at one of the sides relative to a pressure at the other side will move the moveable wall portion that is coupled to respective Bragg gratings so that the movement of one of the moveable wall portion causes a force on the respective Bragg grating resulting in a change in strain of the respective Bragg grating. An internal space at each Bragg grating is in fluidal communication with an internal space at an adjacent Bragg grating whereby pressure differences between adjacent internal spaces are reduced.03-18-2010
20100069784Urological medical device and method for analyzing urethral properties - A highly flexible urological medical device for analyzing urethral properties and for optimally placing a periurethral injection and/or a support element, such as suburethral sling and/or a suspension suture, to treat urinary incontinence.03-18-2010
20110251515IMPLANTABLE PRESSURE INDICATOR WITH EXTERNAL INTERROGATION - Observing intracranial physiology includes inserting a bladder at least partially filled with a fluid into a subdural region of interest within a subject, wherein the bladder is coupled in flow communication with a means of indicating a pressure exerted on the bladder within the region of interest. Embodiments also include non-invasively interrogating the means of indicating to determine the pressure exerted on the bladder.10-13-2011
20110077550Systems and methods for treating tissue regions of the body - Systems and methods deploy a therapeutic or diagnostic element into contact with a body tissue region. The systems and methods can sense position of the therapeutic or diagnostic element relative to a targeted tissue region without direct or indirect visualization, by sensing fluid pressure in a fluid path having an outlet located at or near the therapeutic or diagnostic element. The systems and methods can also inflate the therapeutic or diagnostic element during use, while taking steps to avoid over-inflation and/or while dynamically monitoring the pressure conditions within the expanded element.03-31-2011
20080312553INTRACORPOREAL PRESSURE MEASUREMENT DEVICES AND METHODS - The invention relates to devices, systems, and methods for the measurement of a pressure within a body that is adjusted to compensate for variations in local atmospheric pressure. A pressure measurement system can include an implantable target pressure sensor, an implantable internal reference pressure sensor located remotely from the target pressure sensor, an external reference pressure sensor configured to transmit a telemetric signal that is indicative of the local atmospheric pressure, and at least one condition indicator. The implantable medical device system further includes a controller configured to determine a correlation factor based on a signal from the implantable reference pressure sensor and the signal from the external reference pressure sensor.12-18-2008
20120179063SYSTEMS, DEVICES AND METHODS FOR ASSESSMENT OF BODY CAVITY PRESSURES - Systems, devices and methods that can be used to obtain objective pressure measurements in a body cavity using one or more monitoring bladders mounted on a catheter. The monitoring bladders may be adapted to connect or be connected to a system capable of providing objective pressure measurements indicative of the compressive forces acting on the one or more monitoring bladder in the body cavity. The body cavity may include, for example, the rectum, esophagus, stomach, intestine, colon, reproductive tract, urethra, oronasopharnygeal tract, etc.07-12-2012
20110201961MORPHOLOGICAL CLUSTERING AND ANALYSIS OF INTRACRANIAL PRESSURE PULSES (MOCAIP) - A system and method for recognizing the locations of the three ICP sub-peaks present in Intracranial Pressure (ICP) pulses and then calculating pulse metrics automatically and continuously. These metrics allow a comprehensive quantitative characterization of ICP pulse morphology including pulse amplitude, time intervals among sub-peaks, curvature, slope, and decay time constants over a course of time. One embodiment of the system provides real time monitoring and forecasting of intracranial and cerebrovascular pathophysiological changes with beat-by-beat pulse detection, pulse clustering, non-artifactual pulse recognition, peak detection and optimal peak designation processes.08-18-2011
20100030102Active Delivery and Flow Redirections: Novel Devices and Method of Delivery of Materials to Patients - A medical device and method for planning or performing a method for delivering material through tissue into a defined area of a patient may comprise: a material delivery element through which the material may flow out of a delivery end; and observing the migration, flow and persistence of material delivered and developing an plan or optimizing a plan for the delivery of material into the defined area. Novel catheter devices are provided to support these methods.02-04-2010
20100030103Measuring device for physiological parameters - In a measuring device for physiological parameters with an implantable fluid chamber accommodating brain fluid, with a sensor device communicating with the brain fluid in the fluid chamber via a membrane and comprising a sensor for one or more physiological parameters, electronic components and a telemetry device for wireless transmission of signals of the sensor, in order to improve the manufacture and handling, it is proposed that the fluid chamber comprise at least two housing parts which are adapted to be fitted together in a sealed manner, thereby forming a closed interior, and which allow access to the interior when not fitted together, and that the sensor device be arranged in a measurement chamber closed on all sides, which is configured as a component that is adapted for independent handling and is insertable in a defined position in the interior of the fluid chamber.02-04-2010
20100022911SYSTEMS AND METHODS FOR MONITORING PULMONARY EDEMA DYNAMICS - This document discusses, among other things, systems and methods for measuring the dynamics of pulmonary congestion in heart failure subjects over time to monitor the subjects susceptibility to pulmonary edema, including sensing and receiving information indicative of a bodily pressure and information indicative of pulmonary fluid, and using the transient responses of these measurements to compute parameters related to the dynamics of thoracic fluid accumulation, such as a critical pressure (P01-28-2010
20100016756PRESSURE SENSOR OPERATING IN A FLUID MEDIUM - A pressure sensor and a method of measuring pressure signals in a fluid medium. The pressure sensor comprises a sensing element for transducing pressure signals to electric signals and a mechanical amplifier connected to the sensing element, comprising an immersed appendage and a transmission element. The sensing element is enclosed within a case, and the mechanical amplifier is structured to seal the case and isolate the sensing element from the fluid medium. Pressure signals in the fluid medium cause movements in the appendage that are transmitted via the elongated transmission element to the sensing element that is isolated from the fluid medium. The method comprises the stages: Sensing the pressure signal and transmitting it via a transmission element to a piezoelectric sensing element inside the measuring apparatus.01-21-2010
20120150065Method and Apparatus For Measuring Bladder Pressure - A method for measuring bladder pressure in a patient, comprises the steps of: attaching an inflatable cuff around the penis of the patient; maintaining a flow of urine at a predetermined flow rate for a period of time during voiding of the bladder, by means of deflating or inflating the cuff over said period of time, as required; and measuring the cuff pressures required to maintain said predetermined urine flow rate during said period of time.06-14-2012
20110066072INTRACRANIAL PRESSURE SENSOR - An intracranial pressure device for measuring CSF pressure in a skull includes a housing located between the scalp and the skull containing pressure device circuitry and a conduit extending downwardly from the housing to the vicinity of the CSF. A pressure sensor is coupled to the conduit and located in communication with the CSF wherein the pressure sensor directly senses the pressure of the CSF and provides a signal representative of the pressure of the CSF to the pressure device circuitry by way of the conduit. The skull has a dura and the conduit extends by way of an opening through the skull and an opening through the dura to position the sensor in direct contact with the CSF. A fluid reservoir can be in communication with the CSF by way of a tube and by way of the housing. The fluid reservoir contains CSF.03-17-2011
20110092846Cerebral Compliance Monitoring - A system and method for monitoring cerebral compliance of a patient by placing a first pressure sensor in a first sub-dural location, preferably a sub-meningeal location, within the brain of the patient and placing at least a second pressure sensor in a second sub-dural location, preferably a sub-meningeal location, within the brain which is different from the first location. At least one parameter from each of the signals derived from the pressure sensors is compared to estimate cerebral compliance for the patient. Alternatively, at least a single pressure sensor is utilized with a generator of reference signals having at least two different frequencies. Preferably, any change in cerebral compliance is detected by determining a change in the compared parameter, and a perceptible indication is generated when cerebral compliance deviates beyond a pre-selected value.04-21-2011
20120071786VISUALIZATION OF VALUES OF A PHYSICAL PROPERTY DETECTED IN AN ORGANISM OVER TIME - A system for visually indicating, in real time or post hoc, values of a physical property detected over a period of time along a dimension of an organism to a user on a temporal plot and a profile plot, either individually or concurrently. The detected values may be visually indicated on the temporal plot using any of a variety of techniques, including, but not limited to, a contour technique, a line trace technique or a mesh plot technique. Further, the detected values may be visually indicated on the profile plot using any of a variety of techniques, including, but not limited to a contour technique, a line trace technique or a histogram technique. To provide a finer spatial resolution, values may be interpolated for locations between the locations at which values were detected, and these values may be displayed on the temporal plot and the profile plot.03-22-2012
20100094165Gas Column Pressure Monitoring Device - The present invention provides a device for efficiently coupling a pressure monitoring device to a pressure transducer. In addition, the present invention reduces or eliminates the likelihood air will be unintentionally injected into the pressure monitoring device while connecting the pressure monitoring device to a pressure transducer. In one embodiment, the present invention includes a pressure monitoring coupler comprising a sealing member and a device body. The sealing member comprises a sealing flange connected to an engagement member. The engagement member includes a first and second O-ring positioned thereon. The device body comprises a pressurizing lumen and an intersecting monitoring lumen in communication with a receiving aperture. During use, a pressure monitoring catheter is inserted into a patient's tissue. The pressure monitoring catheter and a transducer are connected to the device body of the present invention. Thereafter, the sealing member is inserted into the device body while the pressure within the pressure monitoring catheter is maintained at or less than a state or equilibrium with the pressure applied by the tissue.04-15-2010
20100094164OPTICAL MICROSENSOR AND METHODS FOR MONITORING INTRACRANIAL PRESSURE - A method is provided for internally monitoring pressure of a patient by transmitting an external light source to an implantable microsensor device. The implantable microsensor device has a microlens, a deflectable membrane responsive to a change in pressure of a surrounding environment within the patient, and an array structure disposed between the microlens and the membrane. The array structure includes a first layer that emits a first wavelength of light and a second layer that emits a second wavelength of light responsive to an external light source, where the first and second wavelengths of light are respectively transmissive through the surrounding environment and distinct from one another. Either the array structure or the microlens translates with the membrane in response to the change in pressure of the surrounding environment. The implantable microsensor is compatible with medical imaging devices and does not require an internal or external power supply.04-15-2010
20090131814Method and process for weight management - A weight management method and system measures and utilizes an individual's specific body composition and metabolic rates to provide a nutritional plan designed to the individual's specific weight management goals, including weight loss, weight gain or weight control. The system is composed of four primary components: 1) body composition testing; 2) metabolic rate testing; 3) Registered Dietitian counseling; and 4) message therapy. These components are utilized to provide a system that utilizes behavior modification and stress management to allow the individual to meet his or her weight management goals through a healthy, stable process.05-21-2009
20120316460FLUID DELIVERY SYSTEM WITH PRESSURE MONITORING DEVICE - Systems and methods for determining fallopian tube occlusion are disclosed which may provide and more convenient manner of determining fallopian tube occlusion, particularly in relation to transcervical hysteroscopic sterilization with implantable inserts. In accordance with some embodiments, uterine pressure may be measured to determine occlusion with a fluid delivery system including a reservoir and a pressure monitoring device to measure a fluid pressure downstream from the reservoir.12-13-2012
20120172751Assessment and Modulation of Cerebrospinal Fluid for Head Pain - The disclosure relates to the discovery that certain cerebrovascular disorders in humans who exhibit seemingly normal intracranial pressure (ICP) and do not exhibit hydrocephalus can be alleviated or prevented by reducing ICP in the human. Disorders of this type are herein designated normotensive, nonhydrocephalus tenso-responsive cerebrovascular disorder (NNTCDs). The disclosure describes methods of relieving head pain and other symptoms of NNTCDs, for example by withdrawing cerebrospinal fluid (CSF) from the subarachnoid space of a human or by administering a pharmaceutical agent that modulates CSF production, uptake, or both. Methods of assessing whether a human is afflicted with one or more NNTCDs are also described. The disclosure describes numerous pharmaceutical compositions suitable for administration to humans afflicted with NNTCDs to alleviate or prevent such disorders. Such compositions can, for example, include both a CSF-reducing agent and a symptomatic (e.g., head pain) relief agent.07-05-2012
20120172750ACCESS CATHETER SYSTEM HAVING A PRECISELY POSTIONABLE NEEDLE TIP - An access catheter system, comprising a needle assembly comprising a needle having an elongate lumen configured to be substantially filled with a fluid. The system further comprises a fluid monitor configured to monitor a physical characteristic of fluid within the lumen, and configured to sense a change in the physical characteristic. An indicator provides a indication of the sensed change in the physical characteristic.07-05-2012
20110201962Statistical, Noninvasive Measurement of Intracranial Pressure - Tools and techniques for the rapid, continuous, invasive and/or noninvasive measurement, estimation, and/or prediction of a patient's intracranial pressure. In an aspect, some tools and techniques can predict the onset of conditions such as herniation and/or can recommend (and, in some cases, administer) a therapeutic treatment for the patient's condition. In another aspect, some techniques employ high speed software technology that enables active, long term learning from extremely large, continually changing datasets. In some cases, this technology utilizes feature extraction, state-of-the-art machine learning and/or statistical methods to autonomously build and apply relevant models in real-time.08-18-2011
20090069710Method for determining relationships between different pressure-related signals derivable from a human or animal body or body cavity - This invention describes a method for processing pressure signals derivable from locations inside or outside a human or animal body or body cavity. A major aspect of the invention relates to a method for determining relationships between different pressure-related signals with the purpose of obtaining signals predicting pressures inside a body or body cavity from pressure signals outside said body or body cavity. According to the invented method different formula-based relationships for specific types of signals and locations and sensor types are determined, which provides for a reference that can be applied on new and individual non-invasive pressure measurements. Thereby continuous pressure-related signals from a non-invasive source may be processed in a way that makes the continuous non-invasive pressure signals highly predictable of the pressures inside the body or body cavity.03-12-2009
20120316461IN SITU PRESSURE MONITOR AND ASSOCIATED METHODS - Methods, systems, and devices for detecting and quantifying pressure and pressure changes within a system are provided. In one aspect, a pressure sensing device is provided that includes a sensing tube having an interior volume and at least one wall, the wall being configured to deform in response to an external pressure that is greater than an external pressure threshold. The at least one wall is further configured to deform as a function of the external pressure. The device may also include a transducer operably coupled to the sensing tube, the transducer being configured to detect changes in the interior volume as a result of deformation of the at least one wall.12-13-2012
20100234759Reusable Invasive Fluid Pressure Monitoring Apparatus and Method - The present invention is an apparatus and method for invasive bodily fluid pressure measurements using a pressure sensing assembly that is partially reusable. An embodiment includes a system for measuring a bodily pressure level having a support structure that includes at least one reusable pressure transducer that has a sensing face positioned on an exterior portion of the support structure, and a disposable pressure plenum having an inlet in fluid communication with a selected location within the body of a living being that is configured to be removably and slidably engaged with the support structure.09-16-2010
20100234758Valsalva Lung Pressure Monitoring System and Method - A system and method in at least one embodiment includes a pressure monitor, mouthpiece and tubing connecting the pressure monitor and mouthpiece that measures coughed air to monitor Valsalva lung pressure in order to measure the abdominal pressure surrounding the bladder. The system and method provides a non-invasive and convenient system and method for determining an abdominal Leak Point Pressure that utilizes a mouthpiece connected to a pressure monitor in order to measure the lung pressure of an individual such that the abdominal pressure surrounding the bladder is determined.09-16-2010
20120330183VENTILATION MASK WITH INTEGRATED PILOTED EXHALATION VALVE AND METHOD OF VENTILATING A PATIENT USING THE SAME - In accordance with the present invention, there is provided a mask for achieving positive pressure mechanical ventilation (inclusive of CPAP, ventilator support, critical care ventilation, emergency applications), and a method for a operating a ventilation system including such mask. The mask of the present invention includes a piloted exhalation valve that is used to achieve the target pressures/flows to the patient. The pilot for the valve may be pneumatic and driven from the gas supply tubing from the ventilator. The pilot may also be a preset pressure derived in the mask, a separate pneumatic line from the ventilator, or an electro-mechanical control. Additionally, the valve can be implemented with a diaphragm or with a flapper.12-27-2012
20120330184Access Needle Pressure Sensor Device and Method of Use - A tool and method of positioning and delivering medical devices and therapeutics within the pericardial space, as well as other body part or space. A needle is inserted into the chest through a sub-xiphoid puncture, and the pressure within the needle is monitored manometrically or otherwise sensed as the needle is advanced towards the pericardial space. By reading the pressure within the needle while it is advanced, the clinician is able to know that he or she is avoiding insertion of it into organs or spaces not intended to be the target location. In addition the retractable sharp edge allows the operator to access the space and cut tissue but do so safely by retracting the sharp edge.12-27-2012
20100179448Device and Method for Measuring a Physical Parameter in an Anatomic Organ - The invention relates to a device for measuring a physical magnitude (p) in an anatomic organ (07-15-2010
20130018277Non-invasive intracranial pressure monitorAANM Liu; Jung-TungAACI TaichungAACO TWAAGP Liu; Jung-Tung Taichung TW - A non-invasive intracranial pressure monitor includes an annular flexible headband member comprising a crossing arcuate rail member and a hook and loop fastener having a fastener portion at one end of the headband member and a cooperating fastener portion at the other end of the headband member; and a monitoring assembly comprising an inverted T-shaped, hollow seat slidably mounted on the rail member, a fastener driven through two ends of the seat for retaining the seat on the rail member, a receptacle extending downward from the seat opposing the fastener, a biasing member disposed in the receptacle, and a microsensor having one end secured to the biasing member and the other end moveably projecting out of the receptacle.01-17-2013
20110144531Gastric Band System Injector with Accelerometer - A pressure sensor may be used to determine the pressure of fluid within an implantable gastric restriction device. An accelerometer may be used to measure movement of the patient in which the gastric restriction device is implanted, such that the movement may be accounted for when evaluating data from the pressure sensing system. For instance, movement data from the accelerometer may be used to identify pressure data that should be ignored. A display may annotate a pressure graph to show changes in pressure associated with patient movement; or may otherwise influence the display of pressure data based on patient movement. The pressure sensor and accelerometer may be incorporated into an adapter placed between a syringe and needle that are used to adjust the fluid pressure in the gastric restriction device. Upon examination of pressure data in relation to movement data, the implantable gastric restriction may be adjusted as needed.06-16-2011
20100168608Apparatus and Method for Medical Measurement - A measuring device for medical applications in at least one exemplary embodiment includes a first part provided with measuring means for measuring data of a patient, and a second part provided with communication means for sending the data. In at least one exemplary embodiment, the second part is connected to and preferably enclosed within the first part.07-01-2010
20100168607DETERMINING CATHETER STATUS - A method for monitoring the status of an implanted catheter includes monitoring changes in pressure within a lumen of a catheter associated with physiological parameters (“physiological pressure”) and changes in pressure within the lumen of the catheter associated with bolus infusion of fluid into the catheter or bolus withdrawal of infusion from the catheter (“bolus pressure”). Methods that employ monitoring both physiological pressure and bolus pressure can provide information that cannot be obtained from monitoring physiological pressure or bolus pressure alone.07-01-2010
20110160609Method and system for monitoring pressure in a body cavity - An implantable pressure sensor system having a sensor assembly configured and adapted to measure pressure in a volume, the sensor assembly including at least a first MEMS pressure sensor, an application-specific integrated circuit (ASIC) having memory means, temperature compensation system, drift compensation system, a sensor catheter, and power supply means for powering the sensor assembly, the first MEMS pressure sensor having a pressure sensing element that is responsive to exposed pressure, the pressure sensing element being adapted to generate a pressure sensor signal representative of the exposed pressure, the temperature compensation system being adapted to correct for temperature induced variations in the pressure sensor signal, the drift compensation system being adapted to correct for pressure and temperature induced pressure sensor signal drift.06-30-2011
20130123661ENDOSCOPIC PRESSURE DETECTION ASSEMBLY - A pressure detection assembly (05-16-2013
20080200832NON-INVASIVE, BEDSIDE INTRA-CRANIAL PRESSURE MONITORING SYSTEM UTILIZING EARLY ON-SET AUDITORY EVOKED RESPONSES - An intracranial pressure monitoring system and method. The system includes an auditory stimulation and recording unit, which includes a stimulation controller, a memory for storing waveforms, a device for comparing received waveforms with stored waveforms, and an alarm operable based upon that comparison. The system includes at least one cranial electrode attachable to a patient, and an auditory stimulation device, operable by the stimulation controller. The stimulation device is a pair of acoustic ear inserts, each of which is connected to and operated by an auditory stimulator activated by the stimulation controller. In the method, a patient is auditorially stimulated to evoke a received waveform indicative of intracranial pressure, a comparison is generated by comparing the received waveform with one of an established patient baseline waveform and an established normal waveform, and an alarm is generated responsive to that comparison.08-21-2008
20130123660SENSOR SYSTEM FOR MEASURING, TRANSMITTING, PROCESSING AND DISPLAYING A BRAIN PARAMETER - A sensor system is used for measuring, transmitting, processing and displaying a brain parameter. The sensor system has an implantable brain parameter sensor with a wireless transmission unit for measuring the brain parameter. A receiving unit with an antenna is in wireless signal connection with the latter. A data read module is in signal connection with the antenna and a data processing and display device is in turn in signal connection with the data read module. The sensor system also has a head cap or a head hood, on which the receiving unit is fixed to predetermine a relative position relative to the transmitting unit. A sensor system is the result, the use of which remains comfortable for the patient even over a relatively long measuring period. A method for transmission of measurement data measured with the brain parameter sensor to the external data read module is also provided.05-16-2013
20130197390APPARATUS AND METHOD FOR MEASURING INTRACRANIAL PRESSURE - An apparatus for measuring intracranial pressure constituted of: a transmitter arranged to transmit a first acoustic signal through a first cranial point; a receiver arranged to receive a second acoustic signal from a second cranial point; and a control circuitry, wherein the control circuitry is arranged to: extract from the detected second acoustic signal a first set of frequency components associated with the transmitted first acoustic signal; extract from the detected second acoustic signal a second set of frequency components associated with intracranial processes; and determine intracranial pressure responsive to the extracted first set of frequency components and the extracted second set of frequency components.08-01-2013
20120095364Bolt Stop System For Use In Accessing Intracranial Space - A bolt stop for use with an intracranial access bolt that assists in preventing penetration of the bolt into the skull, resists accidental rotation and movement of the bolt with in the skull, and facilitates healing of the scalp.04-19-2012
20130211285Devices and Methods for Noninvasive Measurement of Intracranial Pressure - Provided are systems and methods for noninvasively assessing intracranial pressure by controllably osculating at least a portion of a subject's ocular globe while applying a force sufficient to collapse an intraocular blood vessel and correlating the collapse pressure to intracranial pressure. Also provided are ophthalmic components useful in ophthalmic imaging applications, such as retinal, corneal, and pupil imaging. The components may include an optical contact surface that has a radius of curvature that is greater than the radius of curvature of a subject's cornea.08-15-2013

Patent applications in class Measuring fluid pressure in body