| Greatbatch Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120136309 | Introducer Assembly and Method For Forming an Introducer Assembly - An introducer assembly includes a sheath having a sheath proximal end and distal end, and a passage therethrough. The introducer assembly further includes a handle assembly that is mechanically and/or bonded coupled with a tubular sheath. | 05-31-2012 |
| 20120133341 | Control of Silver Vanadium Oxide Surface Areas as a Means of Controlling Voltage Delay and RDC Growth in an Electrochemical Cell - An electrochemical cell comprising a lithium anode, a cathode comprising a blank cut from a free-standing sheet of a silver vanadium oxide mixture contacted to a current collector. The active material has having a relatively lower surface area and an electrolyte activating the anode and the cathode is described. By optimizing the cathode active material surface area in a SVO-containing cell, the magnitude of the passivating film growth at the solid-electrolyte interphase (SEI) and its relative impermeability to lithium ion diffusion is reduced. Therefore, by using a cathode of an active material, in a range of from about 0.2 m | 05-31-2012 |
| 20120127627 | MODULAR EMI FILTERED TERMINAL ASSEMBLY FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE - A modular EMI filtered terminal assembly for an active implantable medical device (AIMD) includes a hermetic terminal subassembly having at least one conductor extending through an insulator in non-conductive relation with the AIMD housing, and a feedthrough capacitor subassembly disposed generally adjacent to the hermetic terminal assembly. The feedthrough capacitor subassembly includes a conductive modular cup conductively coupled to the AIMD housing, and a feedthrough capacitor disposed within the modular cup. A first electrode plate or set of electrode plates is conductively coupled to the conductor, and a second electrode plate or set of electrode plates is conductively coupled to the modular cup. | 05-24-2012 |
| 20120089125 | Bi-Directional Catheter Steering Handle - A deflectable sheath for use in medical procedures in the vasculature is described. The sheath includes a handle supporting the sheath. Two pull wires run along opposite sides of the sheath to anchors at the deflectable distal end. The handle includes a rotatable member that moves a threaded slider block in a back and forth translational manner. As that translational movement occurs, force is applied to either one or the other of the pull wires to cause deflection of distal end of the sheath in either and upwardly or a downwardly direction with respect to the longitudinal axis of the sheath. | 04-12-2012 |
| 20120083864 | MEDICAL LEAD SYSTEM UTILIZING ELECTROMAGNETIC BANDSTOP FILTERS - Medical lead systems utilizing electromagnetic bandstop filters are provide which can be utilized in a magnetic resonance imaging (MRI) environment for patients who have implanted medical devices. The medical lead system includes an implanted lead having at least one bandstop filter associated therewith, for attenuating current flow through the lead over a range of frequencies. The bandstop filter has an overall circuit Q wherein the resultant 3 dB bandwidth is at least 10 kHz. The values of capacitance and inductance of the bandstop filter are selected such that the bandstop filter is resonant at a selected center frequency. Preferably, the bandstop filter has an overall circuit Q wherein the resultant 10 dB bandwidth is at least 10 kHz. Such bandstop filters are backwards compatible with known implantable deployment systems and extraction systems. | 04-05-2012 |
| 20120078333 | MEDICAL LEAD SYSTEM UTILIZING ELECTROMAGNETIC BANDSTOP FILTERS - Medical lead systems utilizing electromagnetic bandstop filters are provide which can be utilized in a magnetic resonance imaging (MRI) environment for patients who have implanted medical devices. The medical lead system includes an implanted lead having at least one bandstop filter associated therewith, for attenuating current flow through the lead over a range of frequencies. The bandstop filter has an overall circuit Q wherein the resultant 3 dB bandwidth is at least 10 kHz. The values of capacitance and inductance of the bandstop filter are selected such that the bandstop filter is resonant at a selected center frequency. Preferably, the bandstop filter has an overall circuit Q wherein the resultant 10 dB bandwidth is at least 10 kHz. Such bandstop filters are backwards compatible with known implantable deployment systems and extraction systems. | 03-29-2012 |
| 20120071956 | IMPLANTABLE LEAD BANDSTOP FILTER EMPLOYING AN INDUCTIVE COIL WITH PARASITIC CAPACITANCE TO ENHANCE MRI COMPATIBILITY OF ACTIVE MEDICAL DEVICES - A medical lead system includes at least one bandstop filter for attenuating current flow through the lead across a range of frequencies. The bandstop filter has an overall circuit Q wherein the resultant 3 dB bandwidth is at least 10 kHz. The values of capacitance and inductance of the bandstop filter are selected such that the bandstop filter is resonant at a selected center frequency or range of frequencies. Preferably, the bandstop filter has an overall circuit Q wherein the resultant 10 dB bandwidth is at least 10 kHz. Such bandstop filters are backwards compatible with known implantable deployment systems and extraction systems. | 03-22-2012 |
| 20120059445 | IMPLANTABLE LEAD BANDSTOP FILTER EMPLOYING AN INDUCTIVE COIL WITH PARASITIC CAPACITANCE TO ENHANCE MRI COMPATABILITY OF ACTIVE MEDICAL DEVICES - A medical lead system includes at least one bandstop filter for attenuating current flow through the lead across a range of frequencies. The bandstop filter has an overall circuit Q wherein the resultant 3 dB bandwidth is at least 10 kHz. The values of capacitance and inductance of the bandstop filter are selected such that the bandstop filter is resonant at a selected center frequency or range of frequencies. Preferably, the bandstop filter has an overall circuit Q wherein the resultant 10 dB bandwidth is at least 10 kHz. Such bandstop filters are backwards compatible with known implantable deployment systems and extraction systems. | 03-08-2012 |
| 20120055296 | TORQUE LIMITING MECHANISM WITH LOCK BUSHING - A torque limiting mechanism used for securing fasteners is described. The torque limiting mechanism consists of a shaft, a torque gear having a plurality of ball bearings, a threshold bearing and a variable force applying subassembly. The torque limiting mechanism further consisting of a lock bushing and retaining ring placed circumferentially around the proximal end of the shaft. The lock bushing and retaining ring reduce structural misalignments and increase the accuracy of the device. | 03-08-2012 |
| 20120046723 | MEDICAL LEAD HAVING A BANDSTOP FILTER EMPLOYING A CAPACITOR AND AN INDUCTOR TANK CIRCUIT TO ENHANCE MRI COMPATIBILITY - A bandstop filter includes a capacitance in parallel with an inductance and is placed in series with the implantable lead of an active implantable medical device, wherein values of capacitance and inductance are selected such that the bandstop filter attenuates RF current flow at a selected center MRI RF pulsed frequency or across a range of frequencies. The Q | 02-23-2012 |
| 20120035698 | CAPACITOR AND INDUCTOR ELEMENTS PHYSICALLY DISPOSED IN SERIES WHOSE LUMPED PARAMETERS ARE ELECTRICALLY CONNECTED IN PARALLEL TO FORM A BANDSTOP FILTER - One or more inductors and one or more capacitors are physically disposed relative to one another in series and are electrically connected to one another in parallel to form a bandstop filter. Chip inductors and chip capacitors having spaced apart conductive terminals are physically arranged in end-to-end abutting relation to minimize electrical potential between adjacent conductive terminals. The bandstop filter may be hermetically sealed within a biocompatible container for use with an implantable lead or electrode of a medical device. The values of the inductors and the capacitors are selected such that the bandstop filter is resonant at one or more selected frequencies, such as an MRI pulsed frequency. | 02-09-2012 |
| 20120029372 | Drug Delivery Methods and Systems - Drug delivery methods and systems that include a determination of whether a cardiac condition is normal or abnormal, so that a drug may be administered in accordance with that determination. In one implementation, a drug delivery device may be controlled to reduce or stop the drug administration when a normal cardiac condition is detected. In another implementation, a patient monitoring device determines the duration that a cardiac condition is normal and provides an output indicative of the determination so that the patient may alter a therapy accordingly. | 02-02-2012 |
| 20120029342 | MULTILAYER HELICAL WAVE FILTER FOR MEDICAL THERAPEUTIC OR DIAGNOSTIC APPLICATIONS - A multilayer helical wave filter having a primary resonance at a selected RF diagnostic or therapeutic frequency or frequency range, includes an elongated conductor forming at least a portion of an implantable medical lead. The elongated conductor includes a first helically wound segment having at least one planar surface, a first end and a second end, which forms a first inductive component, and a second helically wound segment having at least one planar surface, a first end and a second end, which forms a second inductive element. The first and second helically wound segments are wound in the same longitudinal direction and share a common longitudinal axis. Planar surfaces of the helically wound segments face one another, and a dielectric material is disposed between the facing planar surfaces of the helically wound segments and between adjacent coils of the helically wound segments, thereby forming a capacitance. | 02-02-2012 |
| 20120016377 | TUNNELING TOOL FOR IMPLANTABLE LEADS - A tunneling tool for creating a pathway for implanting a therapy delivery element in a living body. The tunneling tool includes a malleable elongated shaft having a distal end. A sheath having a lumen is slidably positioned over a portion of the shaft. A primary handle secured to proximal end of the shaft permits a user to advance and manipulate the shaft and the sheath in the living body. A secondary handle with an opening is slidably positioned on the shaft between the primary handle and the sheath. The opening has a diameter less than an outside diameter of a proximal end of the sheath. A locking mechanism releasably engages the secondary handle to the primary handle. The sheath is retained in a desired location within the living body by securing the secondary handle relative to the living body as the primary handle is used to remove the shaft from the sheath. | 01-19-2012 |
| 20110311854 | Electrochemical Cell Electrode With Sandwich Cathode And Method For Making Same - An electrochemical cell comprising an anode, and a cathode of a first cathode active material contacted to a first side of a current collector and a second cathode active material contacted to a second side of the current collector thereby forming an elongated cathode sheet. The first cathode active material has a first energy density and first rate capability, and the second cathode active material has a second energy density and a second rate capability. The first energy density of the first material is less than the second energy density of the second material, while the first rate capability of the first material is greater than the second rate capability of the second material. The elongated cathode sheet is folded onto itself to form a sandwich cathode having the configuration of: first cathode active material/current collector/second cathode active material/second cathode active material/current collector/first cathode active material. | 12-22-2011 |
| 20110306980 | Disposable Surgical Cutter For Shaping The Head Of A Femur - A single use bone cutter comprised of a plate with a plurality of insert blade enclosures is described. The insert blade enclosures are arranged in a spiral pattern about the plate and are further positioned at varying height intervals through the thickness of the plate. The bone cutter provides a means whereby the insert blades can be easily positioned within the plurality of blade enclosures to provide a wide array of cutting diameters. | 12-15-2011 |
| 20110306860 | Band Stop Filter Employing a Capacitor and an Inductor Tank Circuit to Enhance MRI Compatibility of Active Medical Devices - A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 12-15-2011 |
| 20110303458 | Coating of Non-Solderable Base Metal for Soldering Application in Medical Device Component - Terminal pins comprising a core of a first electrically conductive material selectively coated with a layer of a second electrically conductive material for incorporated into feedthrough filter capacitor assemblies are described. The feedthrough filter capacitor assemblies are particularly useful for incorporation into implantable medical devices such as cardiac pacemakers, cardioverter defibrillators, and the like, to decouple and shield internal electronic components of the medical device from undesirable electromagnetic interference (EMI) signals. | 12-15-2011 |
| 20110297439 | Full Perimeter Laser Beam Button Weld of Dissimilar Materials - Terminal pins comprising a refractory metal forming a full perimeter weld connected to a terminal block comprising a dissimilar metal incorporated into feedthrough filter capacitor assemblies are discussed. The feedthrough filter capacitor assemblies are particularly useful for incorporation into implantable medical devices such as cardiac pacemakers, cardioverter defibrillators, and the like, to decouple and shield internal electronic components of the medical device from undesirable electromagnetic interference (EMI) signals. | 12-08-2011 |
| 20110288554 | Disposable Cylindrical Cutter - A single use bone cutter comprised of two concentric cylinders and a series of insert blades or cutter disc is described. The cutter blades or cutter disc is preferably positioned at the distal end of the cutter. The bone cutter also comprises a guide rod that aids in the line of sight when using the cutter device. | 11-24-2011 |
| 20110288403 | MULTILAYER HELICAL WAVE FILTER FOR MRI APPLICATIONS - A multilayer helical wave filter having a primary resonance at a selected MRI RF pulsed frequency or frequency range, includes an elongated conductor forming at least a portion of an implantable medical lead. The elongated conductor includes a first helically wound segment having at least one planar surface, a first end and a second end, which forms a first inductive component, and a second helically wound segment having at least one planar surface, a first end and a second end, which forms a second inductive element. The first and second helically wound segments are wound in the same longitudinal direction and share a common longitudinal axis. Planar surfaces of the helically wound segments face one another, and a dielectric material is disposed between the facing planar surfaces of the helically wound segments and between adjacent coils of the helically wound segments, thereby forming a capacitance. | 11-24-2011 |
| 20110284284 | Laser Beam Button Weld of Dissimilar Materials - Terminal pins comprising a refractory metal partially welded to a terminal block comprising a dissimilar metal incorporated into feedthrough filter capacitor assemblies are discussed. The feedthrough filter capacitor assemblies are particularly useful for incorporation into implantable medical devices such as cardiac pacemakers, cardioverter defibrillators, and the like, to decouple and shield internal electronic components of the medical device from undesirable electromagnetic interference (EMI) signals. | 11-24-2011 |
| 20110275911 | Cross-Band Communications In An Implantable Device - An ambulatory monitoring device includes a sensor to monitor a physiological signal and a battery power source. The device also includes a wireless receiver adapted to monitor a first frequency band having frequencies below 1 MHz and configured to detect and receive, using less than 10 micro-amps of current from the battery power source when operating, wireless communications within the first frequency band from a remote device at least one meter away. The device further includes a wireless transmitter adapted to transmit—after receipt from the remote device of a first wireless communication within the first frequency band that includes an invitation for further communication—a second wireless communication in a second frequency band having frequencies above 10 MHz, the second wireless communication comprising data indicative of the physiological signal as sensed by the sensor. | 11-10-2011 |
| 20110264047 | Valved Introducer Assembly and Method Therefor - An introducer assembly includes a sheath having a sheath proximal end and distal end, and a passage therethrough. The introducer assembly further includes a valve assembly that is sealingly associated with the passage of the sheath. The valve assembly includes a valve having a first seal and a second seal, where the first and second seal optionally have different sealing properties. For example, the first seal and the second seal have different thicknesses, different sealing durometers, or otherwise different sealing features. In another option, the sheath is removable from the instrument disposed therethrough. In yet another option, the valve of the valve assembly further includes a chamber disposed between the first and second seals. The seals are spaced to accommodate devices with multiple flow holes therein. | 10-27-2011 |
| 20110245644 | INTEGRATED TANK FILTER FOR A MEDICAL THERAPEUTIC DEVICE - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 10-06-2011 |
| 20110230943 | IMPLANTABLE LEAD FOR AN ACTIVE MEDICAL DEVICE HAVING AN INDUCTOR DESIGN MINIMIZING EDDY CURRENT LOSSES - A shielded component or network for an active medical device (AMD) implantable lead includes an implantable lead having a length extending from a proximal end to a distal end, all external of an AMD housing, and a passive component or network disposed somewhere along the length of the implantable lead. The passive component or network including at least one inductive component having a primary magnetic field line axis. A conductive shield or housing having a primary longitudinal axis substantially surrounds the inductive component or the passive network. The inductive component's magnetic field line axis is oriented substantially orthogonally to the primary longitudinal axis of the conductive shield or housing. | 09-22-2011 |
| 20110229762 | Method Of Using Cyclic Pressure To Increase The Pressed Density Of Electrodes For Use In Electrochemical Cells - The traditional method of building a CF | 09-22-2011 |
| 20110213233 | TANK FILTERS PLACED IN SERIES WITH THE LEAD WIRES OR CIRCUITS OF ACTIVE MEDICAL DEVICES TO ENHANCE MRI COMPATIBILITY - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 09-01-2011 |
| 20110213232 | TANK FILTERS PLACED IN SERIES WITH THE LEAD WIRES OR CIRCUITS OF ACTIVE MEDICAL DEVICES TO ENHANCE MRI COMPATIBILITY - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 09-01-2011 |
| 20110208030 | TANK FILTERS PLACED IN SERIES WITH THE LEAD WIRES OR CIRCUITS OF ACTIVE MEDICAL DEVICES TO ENHANCE MRI COMPATABILITY - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 08-25-2011 |
| 20110202060 | Disposable Reamer - A disposable acetabular reamer designed to improve tissue removal efficiency is described. The reamer device comprises a reamer cutting shell and a reamer driver interface. The reamer cutting shell has a hemispherical structure with a plurality of spaced apart rib portions that extend from a central region located about an apex of the shell. A tissue cutting surface further extends along a longitudinal leading edge, trailing edge or both leading and trailing rib portions. The tissue cutting surface further comprises a series of alternating cutting teeth and notches which are bent at a rake angle. | 08-18-2011 |
| 20110201912 | TANK FILTERS PLACED IN SERIES WITH THE LEAD WIRES OR CIRCUITS OF ACTIVE MEDICAL DEVICES TO ENHANCE MRI COMPATIBILITY - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 08-18-2011 |
| 20110196346 | ARTICULATING HANDLE FOR A DEFLECTABLE CATHETER AND METHOD THEREFOR - A catheter assembly includes a handle assembly, and a catheter body coupled with the handle assembly, where the catheter body extends to a deflectable distal end portion, and the deflectable distal end is controllable by a flexible element. A lever actuator member is operatively coupled with the flexible element, and movement of the actuator member provides for movement of the flexible element. | 08-11-2011 |
| 20110183215 | Layered Electrode For An Electrochemical Cell - A new cathode design is provided comprising a cathode active material mixed with a binder and a conductive diluent in at least two differing formulations. Each of the formulations exists as a distinct cathode layer. After each layer is pressed or sheeted individually, a first one of the layers is contacted to a current collector. The other layer is then contacted to the opposite side of the layer contacting the current collector. Therefore, by using electrodes comprised of layers, where each layer is optimized for a desired characteristic (i.e. high capacity, high power, high stability), the resulting battery will display improved function over a wide range of applications. Such an exemplary cathode is comprised of: SVO (100−x %)/SVO (100−y %)/current collector/SVO (100−y %)/SVO (100−x %), wherein x and y are different and represent percentages of non-active materials. | 07-28-2011 |
| 20110147062 | FEEDTHROUGH FLAT-THROUGH CAPACITOR - A feedthrough flat-through capacitor includes a capacitor having a first and second set of electrode plates, a first feedthrough passageway through the capacitor, a first lead disposed within the first feedthrough passageway and conductively coupled to the first set of electrode plates, a second feedthrough passageway through the capacitor disposed remote form the first feedthrough passageway, and a second lead disposed within the second feedthrough passageway and conductively coupled to the first set of electrode plates. The second set of electrode plates are typically conductively coupled to a ground. An EMI shield may be provided to electromagnetically isolate the first lead from the second lead. | 06-23-2011 |
| 20110144734 | MEDICAL LEAD SYSTEM UTILIZING ELECTROMAGNETIC BANDSTOP FILTERS - Medical lead systems utilizing electromagnetic bandstop filters are provide which can be utilized in a magnetic resonance imaging (MRI) environment for patients who have implanted medical devices. The medical lead system includes an implanted lead having at least one bandstop filter associated therewith, for attenuating current flow through the lead over a range of frequencies. The bandstop filter has an overall circuit Q wherein the resultant 3 dB bandwidth is at least 10 kHz. The values of capacitance and inductance of the bandstop filter are selected such that the bandstop filter is resonant at a selected center frequency. Preferably, the bandstop filter has an overall circuit Q wherein the resultant 10 dB bandwidth is at least 10 kHz. Such bandstop filters are backwards compatible with known implantable deployment systems and extraction systems. | 06-16-2011 |
| 20110144649 | Disposable Flex Reamer - A single use intramedullary reamer comprised of a reamer head assembly and a reamer shaft. The reamer head assembly further comprising a series of reamer blades that reside in a series of surface slots that are helically oriented around the cylindrical body. The series of reamer blades are bonded with the cylindrical body through induction bonding. | 06-16-2011 |
| 20110123856 | Direct Resistance Welding-Self Brazing of Aluminum to Molybdenum Pin - A direct welding process for joining a current collector to a terminal pin in the construction of electrochemical cells is described. The resistance welding process utilizes increased current combined with an applied force to bond dissimilar metals with a melting temperature differential of preferably more than 500° C. Preferably, the method is used to bond the terminal pin to the cathode current collector. This method of attachment is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices. | 05-26-2011 |
| 20110122543 | Valve Metal Anode Pellets For Capacitors Formed Using Forced Convection Of Liquid Electrolyte During Anodization - A method and apparatus for anodizing a porous valve metal pellet in a flowing liquid electrolyte is described. The apparatus comprises an insulative container comprised of a lower region, a central region including a cavity for holding the pellet, an upper region, and a continuous passageway extending through the lower, central, and upper regions. Lower and upper screens serving as lower and upper electrodes are disposed in the passageway in the lower and upper container regions, respectively. During anodizing, the electrolyte flows through the lower container region including the lower screen, the porous pellet and then the upper container region including the upper screen. The lower and upper screens are at an opposite electrical polarity as the pellet so that a dielectric oxide is formed on the exposed valve metal including interior portions of the pellet that are exposed to the flowing electrolyte. | 05-26-2011 |
| 20110104542 | SCREEN-LESS ANODE DESIGN CONCEPTS FOR LOW COST LITHIUM ELECTROCHEMICAL CELLS FOR USE IN IMPLANTABLE MEDICAL DEVICE APPLICATIONS - A new cathode design having a first cathode active material of a relatively low energy density but of a relatively high rate capability contacted to one side of a current collector and a second cathode active material having a relatively high energy density but of a relatively low rate capability contacted to the opposite side thereof is described. A preferred cathode is: SVO/current collector/CF | 05-05-2011 |
| 20110091776 | Sandwich Cathode Electrochemical Cell With Wound Electrode Assembly - A new design for a cathode having a configuration of: SVO/first current collector/CF | 04-21-2011 |
| 20110071358 | Fiber Optic Assisted Medical Lead - A medical device for placing a medical lead in the human body using minimally invasive techniques is described. One lead includes a lead body connected to a lead head having an aperture for providing fiber optic access to the interior of a helical electrode. The fiber optic shaft may be disposed within or along-side a drive shaft releasably coupled to the head to rotate the head. The drive shaft and lead body may be delivered using a delivery catheter. The delivery catheter can be advanced though a small incision to the target tissue site, and the site remotely visualized through the fiber optic scope extending through the lead head aperture. Some catheters include a distal mapping electrode readable from the catheter proximal portion or handle. The lead head can be rotated, rotating the helical electrode into the tissue, and the catheter, drive shaft, and fiber optic probe removed. In one use, epicardial pacing leads are placed on the posterior surface of the heart, aided by visualization and mapping to obtain optimal electrode placement and patient outcome. | 03-24-2011 |
| 20110066212 | TANK FILTERS PLACED IN SERIES WITH THE LEAD WIRES OR CIRCUITS OF ACTIVE MEDICAL DEVICES TO ENHANCE MRI COMPATABILITY - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 03-17-2011 |
| 20110063088 | RFID DETECTION AND IDENTIFICATION SYSTEM FOR IMPLANTABLE MEDICAL DEVICES - An RFID tag is disposed within a hermetically sealed housing of an IMD. Low frequency RFID interrogators and tags are used, and the housing walls are made of materials, and/or are reduced in thickness, to facilitate RF communication between the RFID tag and an RFID reader/interrogator programmer. An RFID reader/interrogator may be used which has a limited transmit time and time-out period to avoid interference with the operation of the IMD. | 03-17-2011 |
| 20110057037 | PROCESS FOR TRANSFERRING PRODUCT INFORMATION UTILIZING BARCODE READER INTO PERMANENT MEMORY FOR AN IMPLANTED MEDICAL DEVICE - A barcode having product information is paired with an implantable medical device or component. The barcode is optically read and at least a portion of the product information is stored into a temporary memory. At least a portion of the product information stored in the temporary memory is electronically written to permanent memory of an RFID chip associated with the implanted medical device or component. | 03-10-2011 |
| 20110054582 | SHIELDED NETWORK FOR AN ACTIVE MEDICAL DEVICE IMPLANTABLE LEAD - A shielded component or network for an active medical device (AMD) implantable lead includes (1) an implantable lead having a length extending from a proximal end to a distal end, all external of an AMD housing, (2) a passive component or network disposed somewhere along the length of the implantable lead, the passive component or network including at least one inductive component having a first inductive value, and (3) an electromagnetic shield substantially surrounding the inductive component or the passive network. The first inductive value of the inductive component is adjusted to a account for a shift in its inductance to a second inductive value when shielded. | 03-03-2011 |
| 20110043297 | DUAL FUNCTION TUNED L-C INPUT TRAP PASSIVE EMI FILTER COMPONENT NETWORK FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE - Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to the housing for an active implantable medical device (AIMD) which serves as an energy dissipating surface. A novel L-C input trap filter is provided which has a dual function. The L-C trap acts as a broadband low pass EMI filter while at the same time also acts as an L-C trap in order to divert induced RF energy from the lead to the housing of the AIMD. | 02-24-2011 |
| 20110040343 | SWITCHED DIVERTER CIRCUITS FOR MINIMIZING HEATING OF AN IMPLANTED LEAD IN A HIGH POWER ELECTROMAGNETIC FIELD ENVIRONMENT - An energy management system that facilitates the transfer of high frequency energy induced on an implanted lead or a leadwire includes an energy dissipating surface associated with the implanted lead or the leadwire, a diversion or diverter circuit associated with the energy dissipating surface, and at least one switch for diverting energy in the implanted lead or the leadwire through the diversion circuit to the energy dissipating surface. In alternate configurations, the switch may be disposed between the implanted lead or the leadwire and the diversion circuit, or disposed so that it electrically opens the implanted lead or the leadwire when diverting energy through the diversion circuit to the energy dissipating surface. The switch may comprise a single or multi-pole double or single throw switch. The diversion circuit may be either a high pass filter or a low pass filter. | 02-17-2011 |
| 20110029043 | RFID-ENABLED AIMD PROGRAMMER SYSTEM FOR IDENTIFYING MRI COMPATIBILITY OF IMPLANTED LEADS - An RFID tag is associated with an implantable lead, its sensing or therapy delivery electrode, or a patient, for identifying the MRI compatibility of the implantable lead and/or the presence of a bandstop filter and its attendant characteristics. An RFID-enabled AIMD external telemetry programmer transmits an electromagnetic signal to establish a communication link with the RFID tag. | 02-03-2011 |
| 20110022140 | METHODOLOGY AND APPARATUS TO TERMINATE ABANDONED ACTIVE IMPLANTABLE MEDICAL DEVICE LEADS - An energy management system facilitates the transfer of high frequency energy coupled into an implanted abandoned lead at a selected RF frequency or frequency band, to an energy dissipating surface. This is accomplished by conductively coupling the implanted abandoned lead to the energy dissipating surface of an abandoned lead cap through an energy diversion circuit including one or more passive electronic network components whose impedance characteristics are at least partially tuned to the implanted abandoned lead's impedance characteristics. | 01-27-2011 |
| 20110009935 | Reinforced Suture Sleeve - A reinforced suture sleeve designed to cover and protect a medical lead from physical damage resulting from an over tightened suture is described. The reinforced suture sleeve comprises a metallic tubular insert with at least one slot that cut through the surface of the insert in a spiraled pattern. A biocompatible and pliable polymeric body is molded over the insert. The spiraled cut slot in the metallic tubular insert provides flexibility without degrading structural integrity. An alternate embodiment comprises a polymeric body provided with an embedded fiber mesh made of polymeric fibers, metallic fibers or combinations thereof. The fiber mesh which an over tightened suture from cutting through the suture sleeve and damaging the medical lead. | 01-13-2011 |
| 20110004283 | SHIELDED THREE-TERMINAL FLAT-THROUGH EMI/ENERGY DISSIPATING FILTER - A shielded three-terminal flat-through EMI/energy dissipating filter includes an active electrode plate through which a circuit current passes between a first terminal and a second terminal, a first shield plate on a first side of the active electrode plate, and a second shield plate on a second side of the active electrode plate opposite the first shield plate. The first and second shield plates are conductively coupled to a grounded third terminal. In preferred embodiments, the active electrode plate and the shield plates are at least partially disposed with a hybrid flat-through substrate that may include a flex cable section, a rigid cable section, or both. | 01-06-2011 |
| 20110001610 | MINIATURE HERMETICALLY SEALED RFID MICROELECTRONIC CHIP CONNECTED TO A BIOCOMPATIBLE RFID ANTENNA FOR USE IN CONJUNCTION WITH AN AIMD - An implantable radio frequency identification (RFID) tag includes a hermetically sealed biocompatible container, an RFID microelectronics chip is disposed within the container, and a biocompatible antenna extends from the RFID microelectronic chip and exteriorly of the container. In an exemplary embodiment the container comprises a housing for an active implantable medical device (AIMD). In another exemplary embodiment the RFID tag is associated with an AIMD. The AIMD may comprise a lead system. The RFID tag may be disposed within a non-hermetically sealed portion of the AIMD, such a header block, and may include information pertaining to the AIMD. Another exemplary embodiment may include a sensor conductively coupled to the RFID microelectronics chip. The sensor may be disposed exterior of or within the container. The sensor measures properties and activities of the human body and the RFID tag is capable of transmitting said measured properties in real time. | 01-06-2011 |
| 20100331932 | IMPLANTED LEAD SLEEVE HAVING RFID TAG - An identification device for an implantable lead includes an associated implantable sleeve and a radio frequency identification device (RFID) tag associated with the sleeve. The RFID tag includes information relating to the implantable lead, its associated lead system, or an associated implantable medical device. The RFID tag may be hermetically sealed within the sleeve and the sleeve selectively fixed along a length of the lead. The sleeve may comprise a loop forming an aperture, a crimped clamp device, a clamp device including a ratchet, clip, or rivet mechanism, or a clamp device including two separate clamshells, all of which allow for secure attachment to the lead. Alternatively, the sleeve may integrally be formed as part of the lead between a lead conductor and an insulated lumen. An external interrogator may be used for identifying information contained within the RFID tag. | 12-30-2010 |
| 20100328049 | AIMD EXTERNAL PROGRAMMER INCORPORATING A MULTIFUNCTION RFID READER HAVING A LIMITED TRANSMIT TIME AND A TIME-OUT PERIOD - A system is provided for identifying implanted medical devices, leads and systems, as well as objects in close proximity to a patient having an implanted medical device (IMD), using a radio frequency identification (RFID) tag having retrievable information relating to the IMD, lead system and/or patient. An RFID tag communicator includes a circuit for limiting the total continuous transmit time of an interrogation signal, and a time-out circuit for delaying a second and any subsequent interrogation of the RFID tag. An external IMD programmer incorporating a multi-functional RFID reader is capable of identifying and communicating with various types of implanted medical devices, even if such devices are made by different manufacturers. | 12-30-2010 |
| 20100326967 | Laser Weld Process For Seam Welded Electrochemical Devices - A method for making an electrochemical device enclosure is described. The methods comprises the steps of forming first and second casing members; inserting electrochemically active materials within the first casing member; mating the first casing member to the second casing member, thereby forming an interface therebetween; providing a laser welding apparatus comprising a laser; intermittently turning a laser beam on and off while traversing the laser in a first welding pass 360 degrees along the perimeters of the first and second casing members, thereby forming a first intermittent set of welded and unwelded sections at the interface between the casing members; and intermittently turning the laser beam on and off while traversing the laser in a second welding pass 360 degrees along the perimeters of the first and second casing members, thereby forming a second intermittent set of welded sections at the interface between the first and second casing members. The first and second intermitted welded sections combine to provide a complete hermetic seal around and along the circumference of the casing members interface. | 12-30-2010 |
| 20100324640 | ELECTRICALLY ISOLATING ELECTRICAL COMPONENTS IN A MEDICAL ELECTRICAL LEAD WITH AN ACTIVE FIXATION ELECTRODE - A lead body adapted for in-vivo implantation in a living subject includes a proximal end configured for electrical and mechanical connection to a therapy or a monitoring device, and a distal end. A collar is disposed at the distal end of the lead body, and a casing is disposed within the collar and is translatable along a central longitudinal axis of the collar. At least one electrical conductor extends substantially the length of the lead body, and an electronic component is disposed within the casing and conductively coupled to the electrical conductor. An electrode is mechanically connected to the casing and conductively coupled to the electronic component. A seal is disposed between the casing assembly and the collar to prevent passage of ionic fluid into the lead body through its distal end. | 12-23-2010 |
| 20100324639 | METHODOLOGY AND APPARATUS TO TERMINATE ABANDONED ACTIVE IMPLANTABLE MEDICAL DEVICE LEADS - An energy management system facilitates the transfer of high frequency energy coupled into an implanted abandoned lead at a selected RF frequency or frequency band, to an energy dissipating surface. This is accomplished by conductively coupling the implanted abandoned lead to the energy dissipating surface of an abandoned lead cap through an energy diversion circuit including one or more passive electronic network components whose impedance characteristics are at least partially tuned to the implanted abandoned lead's impedance characteristics. | 12-23-2010 |
| 20100324638 | Temporary Stimulation Lead With Polymer Electrodes And Method Of Manufacture - A temporary medical lead in which stimulating electrical energy is transmitted to body tissue through the lead electrodes via ionic conduction within the hydrogel material. The structure of the hydrophilic hydrogel material consists of a porous structure into which conductive salt ions are diffused. In addition the structure of the hydrogel material can be loaded with a single or combination of therapeutic drugs from which is eluted from the electrode's surface. | 12-23-2010 |
| 20100321163 | RFID DETECTION AND IDENTIFICATION SYSTEM FOR IMPLANTABLE MEDICAL LEAD SYSTEMS - A system for identifying active implantable medical devices (AIMD) and lead systems implanted in a patient using a radio frequency identification (RFID) tag having retrievable information relating to the AIMD, lead system and/or patient. The RFID tag may store information about the AIMD manufacturer, model number, serial number; leadwire system placement information and manufacturer information; MRI compatibility due to the incorporation of bandstop filters; patient information, and physician and/or hospital information and other relevant information. The RFID tag may be affixed or disposed within the AIMD or leadwires of the lead system, or surgically implanted within a patient adjacent to the AIMD or leadwire system. | 12-23-2010 |
| 20100318160 | MULTIPLEXER FOR SELECTION OF AN MRI COMPATIBLE BANDSTOP FILTER PLACED IN SERIES WITH A PARTICULAR THERAPY ELECTRODE OF AN ACTIVE IMPLANTABLE MEDICAL DEVICE - An MRI-compatible electronic medical therapy system includes an active medical device connected to a plurality of electrodes. A multiplexer circuit includes at least one circuit protection device in electrical series with the electrodes and the medical device. The circuit protection device is adapted to permit current flow therethrough during normal medical device related therapy, but substantially prevent current flow therethrough in the presence of an induced electromagnetic field. | 12-16-2010 |
| 20100316787 | Biomimetic Coating Method - A modified method of preparing and applying a biomimetic coating to a medical device substrate surface is described. The modified biomimetic coating method utilizes a solvent mixture of water and an organic water miscible solvent that results in a more efficient coating process, reducing the time required to apply a sufficiently adherent biomimetic coating. | 12-16-2010 |
| 20100286766 | SURFACE MODIFICATION FOR COATING - A modified medical device substrate surface designed to improve adhesion of biomimetic surfactants to the medical device surface, thus reducing the risk of thrombosis is described. The surface modification is accomplished through either an application of a tie layer of a hydrophobic material on the substrate surface intermediate the biomimetic coating or through incorporation of a hydrophobic dopant in the polymeric substrate prior to extrusion or molding. Either method creates a hydrophobically modified surface that enhances the biomimetic surfactant bonding strength. | 11-11-2010 |
| 20100280584 | ACTIVE IMPLANTABLE MEDICAL SYSTEM HAVING EMI SHIELDED LEAD - A lead extending exteriorly from an active implantable medical device (AIMD) is at least partially ensheathed within an electromagnetic interference (EMI) shield. The AIMD has a conductive equipotential surface to which the EMI shield may be conductively coupled. An impeding circuit may be provided for raising the high frequency impedance of the lead. An energy diversion circuit may also be provided for conductively coupling the lead to the EMI shield. | 11-04-2010 |
| 20100248017 | Terminal connector for connecting a cell to a medical device - A electrical connector for connection to an electrochemical cell is described. The connector comprises a conductive lid; a ferrule disposed within an opening through the conductive lid; a conductive center pin disposed within the ferrule; and a hermetic seal formed between the pin and an interior surface of the ferrule. A mating terminal connector adapted to be connected to the ferrule and the conductive center pin is further provided. The terminal connector is a device for easily and quickly connecting the cell to a circuit board of the kind found in an implantable medical device, such as a cardiac pacemaker, defibrillator, neuro-stimulator, drug pump, and the like. | 09-30-2010 |
| 20100241206 | EMI SHIELDED CONDUIT ASSEMBLY FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE - An EMI shielded conduit assembly for an active implantable medical device (AIMD) includes an EMI shielded housing for the AIMD, a hermetic feedthrough terminal associated with the AIMD housing, and an electronic circuit board, substrate or network disposed within the AIMD housing remote from the hermetic feedthrough terminal. At least one leadwire extends from the hermetic feedthrough terminal to the remote circuit board, substrate or network. An EMI shield is conductively coupled to the AIMD housing and substantially co-extends about the leadwire in non-conductive relation thereto. | 09-23-2010 |
| 20100231327 | CAPACITOR AND INDUCTOR ELEMENTS PHYSICALLY DISPOSED IN SERIES WHOSE LUMPED PARAMETERS ARE ELECTRICALLY CONNECTED IN PARALLEL TO FORM A BANDSTOP FILTER - One or more inductors and one or more capacitors are physically disposed relative to one another in series and are electrically connected to one another in parallel to form a bandstop filter. Chip inductors and chip capacitors having spaced apart conductive terminals are physically arranged in end-to-end abutting relation to minimize electrical potential between adjacent conductive terminals. The bandstop filter may be hermetically sealed within a biocompatible container for use with an implantable lead or electrode of a medical device. The values of the inductors and the capacitors are selected such that the bandstop filter is resonant at one or more selected frequencies, such as an MRI pulsed frequency. | 09-16-2010 |
| 20100222857 | Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices - A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 09-02-2010 |
| 20100222856 | Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices - A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 09-02-2010 |
| 20100217262 | FREQUENCY SELECTIVE PASSIVE COMPONENT NETWORKS FOR ACTIVE IMPLANTABLE MEDICAL DEVICES UTILIZING AN ENERGY DISSIPATING SURFACE - Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to the housing for an active implantable medical device (AIMD) which serves as an energy dissipating surface. This is accomplished through broadband filtering or by resonant filtering. In a passive component network for an AIMD, a frequency selective energy diversion circuit is provided for diverting high-frequency energy away from an AIMD lead to the AIMD housing for dissipation of said high-frequency energy. | 08-26-2010 |
| 20100208397 | SWITCHED SAFETY PROTECTION CIRCUIT FOR AN AIMD SYSTEM DURING EXPOSURE TO HIGH POWER ELECTROMAGNETIC FIELDS - An energy management system that facilitates the transfer of high frequency energy induced on an implanted lead or a leadwire includes an energy dissipating surface associated with the implanted lead or the leadwire, a diversion or diverter circuit associated with the energy dissipating surface, and at least one switch disposed between the diversion circuit and the AIMD electronics for diverting energy in the implanted lead or the leadwire through the diversion circuit to the energy dissipating surface. The switch may comprise a single or multi-pole double or single throw switch. The diversion circuit may be either a high pass filter or a low pass filter. | 08-19-2010 |
| 20100198335 | Stent Coating For Eluting Medication - A vascular stent comprising a drug-eluting outer layer of a porous sputtered columnar metal having each column capped with a biocompatible carbon-containing material is described. This is done by placing the stent over a close-fitting mandrel and rotating the assembly in a sputter flux. The result is a coating that is evenly distributed over the outward-facing side of the stent's wire mesh while preventing the sputtered columnar coating from reaching the inward facing side where a smooth hemocompatible surface is required. The stent is then removed from the mandrel, exposing all surfaces, and finally coated with a layer of carbon such as amorphous carbon or diamond-like carbon. The carbonaceous coating enhances biocompatibility without preventing elutriation of a therapeutic drug provided in the porosity formed between the columnar structures. The result is a stent that is adapted to both the hemodynamic and the immune response requirements of its vascular environment. | 08-05-2010 |
| 20100198312 | EMI FILTER EMPLOYING A CAPACITOR AND AN INDUCTOR TANK CIRCUIT HAVING OPTIMUM COMPONENT VALUES - A bandstop filter having optimum component values is provided for a lead of an active implantable medical device (AIMD). The bandstop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the implantable lead of the AIMD, wherein values of capacitance and inductance are selected such that the bandstop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the bandstop filter to attenuate current flow through the implantable lead along a range of selected frequencies. | 08-05-2010 |
| 20100194541 | HERMETICALLY SEALED RFID MICROELECTRONIC CHIP CONNECTED TO A BIOCOMPATIBLE RFID ANTENNA - An implantable radio frequency identification (RFID) tag includes a hermetically sealed biocompatible housing for an active implantable medical device (AIMD), an RFID microelectronics chip is disposed within the housing, and a biocompatible antenna extends from the RFID microelectronic chip and exteriorly of the housing. In a preferred form of the invention, the antenna is disposed within a header block of the AIMD, and the RFID chip is disposed within the AIMD housing. | 08-05-2010 |
| 20100191306 | TRANSIENT VOLTAGE SUPPRESSION CIRCUIT FOR AN IMPLANTED RFID CHIP - A transient voltage suppressing (TVS) circuit includes an implantable RFID chip, an antenna associated with the RFID chip, and a transient voltage suppressor electrically connected in parallel to both the RFID chip and the antenna. The transient voltage suppressor may be formed of an array of diodes, such as back-to-back diodes, at least one Zener diode, or back-to-back or series opposing Zener diodes. In preferred embodiments, the antenna is formed of a biocompatible material suitable for long-term exposure to body tissue and body fluids, and the RFID chip and the transient voltage suppressor are disposed within a hermetically sealed biocompatible container. | 07-29-2010 |
| 20100191236 | SWITCHED DIVERTER CIRCUITS FOR MINIMIZING HEATING OF AN IMPLANTED LEAD AND/OR PROVIDING EMI PROTECTION IN A HIGH POWER ELECTROMAGNETIC FIELD ENVIRONMENT - An energy management system that facilitates the transfer of high frequency energy induced on an implanted lead or a leadwire includes an energy dissipating surface associated with the implanted lead or the leadwire, a diversion or diverter circuit associated with the energy dissipating surface, and at least one non-linear circuit element switch for diverting energy in the implanted lead or the leadwire through the diversion circuit to the energy dissipating surface. In alternate configurations, the switch may be disposed between the implanted lead or the leadwire and the diversion circuit, or disposed so that it electrically opens the implanted lead or the leadwire when diverting energy through the diversion circuit to the energy dissipating surface. The non-linear circuit element switch is typically a PIN diode. The diversion circuit may be either a high pass filter or a low pass filter. | 07-29-2010 |
| 20100189879 | Method For Providing An Implantable Electrical Lead Wire - Implantable electrical lead wires, such as cobalt-chromium-molybdenum alloy wires, are coated with a metal, ceramic, or carbon to a thickness of about 100 nm or less to provide a non-reactive interface to polyurethane sheathing materials. Preferred is sputter coating an amorphous carbon intermediate the alloy wire and the polyurethane sheath. | 07-29-2010 |
| 20100185264 | Method For Coating A Cathode Active Material With A Metal Oxide For Incorporation Into A Lithium Electrochemical Cell - An improved cathode material for nonaqueous electrolyte lithium electrochemical cell is described. The preferred active material is silver vanadium oxide (SVO) coated with a protective layer of an inert metal oxide (M | 07-22-2010 |
| 20100185263 | RF ACTIVATED AIMD TELEMETRY TRANSCEIVER - A telemetry wake-up circuit is electrically disposed between a telemetry transceiver associated with an AIMD, and an RF tag. The RF tag may be remotely interrogated to generate a signal to which the telemetry wake-up circuit is responsive to switch the telemetry transceiver from a sleep mode to an active telemetry mode. In the sleep mode, the telemetry transceiver draws less than 25,000 nanoamperes from the AIMD, and preferably less than 500 nanoamperes. | 07-22-2010 |
| 20100174349 | SYSTEM FOR TERMINATING ABANDONED IMPLANTED LEADS TO MINIMIZE HEATING IN HIGH POWER ELECTROMAGNETIC FIELD ENVIRONMENTS - An energy management system facilitates the transfer of high frequency energy coupled into an implanted abandoned lead at a selected RF frequency or frequency band, to an energy dissipating surface. This is accomplished by conductively coupling the implanted abandoned lead to the energy dissipating surface of an abandoned lead cap through an energy diversion circuit including one or more passive electronic network components whose impedance characteristics are at least partially tuned to the implanted abandoned lead's impedance characteristics. | 07-08-2010 |
| 20100168821 | SWITCHED DIVERTER CIRCUITS FOR MINIMIZING HEATING OF AN IMPLANTED LEAD IN A HIGH POWER ELECTROMAGNETIC FIELD ENVIRONMENT - An energy management system that facilitates the transfer of high frequency energy induced on an implanted lead or a leadwire includes an energy dissipating surface associated with the implanted lead or the leadwire, a diversion or diverter circuit associated with the energy dissipating surface, and at least one switch for diverting energy in the implanted lead or the leadwire through the diversion circuit to the energy dissipating surface. In alternate configurations, the switch may be disposed between the implanted lead or the leadwire and the diversion circuit, or disposed so that it electrically opens the implanted lead or the leadwire when diverting energy through the diversion circuit to the energy dissipating surface. The switch may comprise a single or multi-pole double or single throw switch. The diversion circuit may be either a high pass filter or a low pass filter. | 07-01-2010 |
| 20100160997 | TUNED ENERGY BALANCED SYSTEM FOR MINIMIZING HEATING AND/OR TO PROVIDE EMI PROTECTION OF IMPLANTED LEADS IN A HIGH POWER ELECTROMAGNETIC FIELD ENVIRONMENT - An energy management system facilitates the transfer of high frequency energy coupled into an implanted lead at a selected RF frequency or frequency band, to an energy dissipating surface. This is accomplished by conductively coupling the implanted lead to the energy dissipating surface through an energy diversion circuit including one or more passive electronic network components whose impedance characteristics are at least partially tuned to the implanted lead's impedance characteristics. | 06-24-2010 |
| 20100160858 | DEFLECTABLE CATHETER STEERING AND LOCKING SYSTEM - A deflectable catheter includes a catheter shaft having a deflectable distal tip. A support member is coupled around a proximal portion of the catheter shaft, and the support member includes a first brake portion extending along at least a portion of the support member. A handle is coupled around the support member. The deflectable catheter includes a carriage moveably coupled along the handle, and the carriage includes a second brake portion sized and shaped to engage with at least a portion of the first brake portion. A flexible element is coupled between the deflectable distal tip and the carriage. A biasing device is adapted to bias the second brake portion into engagement with the first brake portion. | 06-24-2010 |
| 20100155645 | ANODIZING ELECTROLYTES FOR HIGH VOLTAGE CAPACITOR ANODES - An anodizing electrolyte composition for valve metals including aluminum, niobium, titanium, tantalum, zirconium, and alloys thereof, is described. The electrolyte consists essentially of a protic solvent selected from the group consisting of alkylene glycols, polyalkylene glycols, and their mono ethers, and a weak inorganic or organic acid or its salt. A preferred electrolyte has polyethylene glycol mixed with phosphoric acid in de-ionized water. The electrolyte is capable of anodizing valve metals for high voltage capacitors to greater than 300 volts at temperatures below about 60° C. with little to no gray-out, high formation breakdown voltage and a high quality of dielectric oxide. | 06-24-2010 |
| 20100134955 | ELECTRICALLY CONNECTING MULTIPLE CATHODES IN A CASE NEGATIVE MULTI- ANODE CAPACITOR - A capacitor comprising a casing of first and second casing members secured to each other to provide an enclosure, a feedthrough electrically insulated from the casing and extending there from through a glass-to-metal seal, first and second anodes electrically connected to each other within the casing, a cathode, and an electrolyte is described. The cathode comprises cathode active material deposited on planar faces of the first and second casing members. There is also a cathode current collector disposed intermediate the first and second anodes. The cathode current collector supports cathode active material on both of its major faces and includes a tab that is directly electrically connected to a ferrule of the glass-to-metal seal. That way, the casing is the negative terminal for the cathode and a feedthrough pin extending through the glass-to-metal seal is the positive terminal for the anode of the capacitor. | 06-03-2010 |
| 20100134951 | ELECTROMAGNETIC INTERFERENCE FILTER AND METHOD FOR ATTACHING A LEAD AND/OR A FERRULE TO CAPACITOR ELECTRODES - A discoidal feedthrough capacitor has its active electrode plates disposed within a dielectric body so that an edge of the active electrode plates is exposed at a surface of a through-hole for a conductive lead. The conductive lead is conductively coupled to the exposed edge of the electrode plates without an intervening conductive termination surface. Similarly, a ground electrode plate set of the feedthrough capacitor may have an edge exposed at the outer periphery of the capacitor for conductively coupling the exposed edge of the ground electrode plate to a conductive ferrule without an intervening conductive termination surface. | 06-03-2010 |
| 20100125312 | SATELLITE THERAPY DELIVERY SYSTEM FOR BRAIN NEUROMODULATION - Deep brain electrodes are remotely sensed and activated by means of a remote active implantable medical device (AIMD). In a preferred form, a pulse generator is implanted in the pectoral region and includes a hermetic seal through which protrudes a conductive leadwire which provides an external antenna for transmission and reception of radio frequency (RF) pulses. One or more deep brain electrode modules are constructed and placed which can transmit and receive RF energy from the pulse generator. An RF telemetry link is established between the implanted pulse generator and the deep brain electrode assemblies. The satellite modules are configured for generating pacing pulses for a variety of disease conditions, including epileptic seizures, Turrets Syndrome, Parkinson's Tremor, and a variety of other neurological or brain disorders. | 05-20-2010 |
| 20100123547 | RFID DETECTION AND IDENTIFICATION SYSTEM INCLUDING AN RFID READER HAVING A LIMITED TRANSMIT TIME AND A TIME-OUT PERIOD TO PROTECT A MEDICAL DEVICE AGAINST RFID-ASSOCIATED ELECTROMAGNETIC INTERFERENCE - A system is provided for identifying implanted medical devices, leads and systems, as well as objects in close proximity to a patient having an implanted active medical device, using a radio frequency identification (RFID) tag having retrievable information relating to the AIMD, lead system and/or patient. An RFID tag communicator includes a circuit for limiting the total continuous transmit time of an interrogation signal, and a time-out circuit for delaying a second and any subsequent interrogation of the RFID tag. | 05-20-2010 |
| 20100114281 | MRI CONDITIONALLY SAFE LEAD EXTENSION AND METHODS - Lead extensions, systems, and methods providing MRI compatible deep brain stimulation (DBS) and spinal cord stimulation (SCS) systems are described. Lead extensions are provided having band stop filters (BSFs) which resonate at a frequency expected from MRI systems to create a very high impedance which can effectively decouple the implanted lead from the lead extension proximal of the BSF and change the effective length. Changing the effective length can reduce the likelihood of undesirably heating tissue near the DBS/SCS electrodes during MRI. Some lead extensions include BSFs in a distal connector for coupling to the lead contacts. The BSFs can be included within a burr hole cap base which can also include a connector for connecting to the DBS lead. DBS and SCS leads having a sacrificial proximal portion and intermediate electrical contacts are also provided. | 05-06-2010 |
| 20100100164 | CAPACITOR AND INDUCTOR ELEMENTS PHYSICALLY DISPOSED IN SERIES WHOSE LUMPED PARAMETERS ARE ELECTRICALLY CONNECTED IN PARALLEL TO FORM A BANDSTOP FILTER - One or more inductors and one or more capacitors are physically disposed relative to one another in series and are electrically connected to one another in parallel to form a bandstop filter. Chip inductors and chip capacitors having spaced apart conductive terminals are physically arranged in end-to-end abutting relation to minimize electrical potential between adjacent conductive terminals. The bandstop filter may be hermetically sealed within a biocompatible container for use with an implantable lead or electrode of a medical device. The values of the inductors and the capacitors are selected such that the bandstop filter is resonant at one or more selected frequencies, such as an MRI pulsed frequency. | 04-22-2010 |
| 20100060431 | MINIATURE HERMETICALLY SEALED RFID MICROELECTRONIC CHIP CONNECTED TO A BIOCOMPATIBLE RFID ANTENNA FOR USE IN CONJUNCTION WITH AN AIMD - A non-hermetically sealed and biocompatible multi-turn RFID loop antenna is electrically connected to a RFID chip which is enclosed within its own hermetically sealed miniature container. The hermetic seal can be very small and the loop antenna can be relatively large, wherein the entire package is both highly reliable, resistant to body fluids and completely biocompatible. The RFID structure can be implanted in a patient and later communicate with an RFID interrogator to provide information relating to the patient and/or implantable medical devices. | 03-11-2010 |
| 20100042204 | Stent Coating For Eluting Medication - A vascular stent comprising a drug-eluting outer layer of a porous sputtered columnar metal having each column capped with a biocompatible carbon-containing material is described. This is done by placing the stent over a close-fitting mandrel and rotating the assembly in a sputter flux. The result is a coating that is evenly distributed over the outward-facing side of the stent's wire mesh while preventing the sputtered columnar coating from reaching the inward facing side where a smooth hemocompatible surface is required. The stent is then removed from the mandrel, exposing all surfaces, and finally coated with a layer of carbon such as amorphous carbon or diamond-like carbon. The carbonaceous coating enhances biocompatibility without preventing elutriation of a therapeutic drug provided in the porosity formed between the columnar structures. The result is a stent that is adapted to both the hemodynamic and the immune response requirements of its vascular environment. | 02-18-2010 |
| 20100040956 | POLYVINYLPYRIDINE ADDITIVES FOR NONAQUEOUS ELECTROLYTES ACTIVATING LITHIUM RECHARGEABLE ELECTROCHEMICAL CELLS - An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes. | 02-18-2010 |
| 20100038132 | MOLDED HEADER CONNECTED TO A MEDICAL DEVICE BY LATERAL DEFORMATION OF A SLEEVE/FEEDTHROUGH PIN SUB-ASSEMBLY - A header assembly for connecting an implantable medical device to at least one conductor lead terminating within a patient intended to be assisted by the medical device is provided. The implantable medical device is comprised of numerous feedthrough wires in a dense, non-linear, scattered format extending from the control circuitry and through a wall of the housing. The header assembly is comprised of an insulative body that is mountable on the housing of the medical device. The insulative body supports at least one conductor subassembly comprising a terminal that is directly connectable to the conductor lead, an intermediate conductor wire comprising a distal end connected to the terminal and a proximal end connected to a connector sleeve. Methods for making the header assembly and for connecting the header assembly to the implantable medical device are also disclosed. | 02-18-2010 |
| 20100023095 | TRANSIENT VOLTAGE/CURRENT PROTECTION SYSTEM FOR ELECTRONIC CIRCUITS ASSOCIATED WITH IMPLANTED LEADS - A transient voltage/surge current protection system is provided for electronic circuits associated with implanted leads. In particular, a transient voltage suppressor such as a diode, a zener diode, a transorb, a surge protector, varistor components or the like, is placed in parallel with the electronic circuits to thereby divert harmful surge current and bypass the electronic circuit during an external defibrillation event or during an applied therapeutic shock, such as from an ICD. | 01-28-2010 |
| 20100023000 | FREQUENCY SELECTIVE PASSIVE COMPONENT NETWORKS FOR IMPLANTABLE LEADS OF ACTIVE IMPLANTABLE MEDICAL DEVICES UTILIZING AN ENERGY DISSIPATING SURFACE - Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to an energy dissipating surface. This is accomplished through broadband filtering or by resonant filtering. In a passive component network for an implantable leadwire of an active implantable medical device, a frequency selective energy diversion circuit is provided for diverting high-frequency energy away from a leadwire electrode to a point or an area spaced from the electrode, for dissipation of high-frequency energy. | 01-28-2010 |
| 20100016936 | FREQUENCY SELECTIVE PASSIVE COMPONENT NETWORKS FOR IMPLANTABLE LEADS OF ACTIVE IMPLANTABLE MEDICAL DEVICES UTILIZING AN ENERGY DISSIPATING SURFACE - Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to an energy dissipating surface. This is accomplished through broadband filtering or by resonant filtering. In a passive component network for an implantable leadwire of an active implantable medical device, a frequency selective energy diversion circuit is provided for diverting high-frequency energy away from a leadwire electrode to a point or an area spaced from the electrode, for dissipation of high-frequency energy. | 01-21-2010 |
| 20100012347 | BLENDED COILED CABLE - A cabled lead comprising a first conductor cable having outer strands and a core strand is described. Each of the outer strands and core strand has outer wires that surround a core wire. The outer wires are made of a first material. The core wires have a tube, which may be in the form of a layer, and a core, and the core is disposed in the tube. The tube is made of the first material and the core is made of a second material. The first conductor cable is positioned in a first conductor sheath. The cabled lead has a second conductor cable which may be substantially structurally identical to the first conductor cable and is positioned in a second conductor sheath. The first and second conductor cables are helically coiled to form the cabled lead. In other embodiments, there may be one or more than two conductor cables. | 01-21-2010 |
| 20090326626 | STIMULATION LEAD DESIGN AND METHOD OF MANUFACTURE - The invention is an implantable electrical stimulation lead for chronic or long term use that has an improved electrical connection between the electrode and conductor. This is accomplished through the use of metal coils embedded in the sidewall of the lead body. A wire conductor providing electrical continuity from a proximal electrode to a distal electrode has a protruding portion extending through the sidewall. This protruding portion can reside adjacent to either a proximal or a distal electrode. In any event, the protruding portion of the lire is captured underneath a ring electrode that is physically deformed into direct contact with the metal of the wire, preferably by swaging. This serve to make electrical conductivity between the wire and the electrode with the embedded coil serving a s support during the swaging process. | 12-31-2009 |
| 20090312835 | DIELECTRIC FLUID FILLED ACTIVE IMPLANTABLE MEDICAL DEVICES - Active implantable medical devices (AIMDs) are backfilled with a dielectric fluid to increase the volts per mil dielectric breakdown strength between internal circuit elements. In a method for backfilling the AIMD with dielectric fluid, substantially all air and moisture is evacuated from the AIMD housing prior to backfilling the AIMD housing with a dielectric fluid having a dielectric breakdown strength greater than air, nitrogen or helium. The AIMD is constructed to accommodate volumetric expansion or contraction of the dielectric fluid due to changes of pressure or temperature of the dielectric fluid to maintain integrity of the AIMD. | 12-17-2009 |
| 20090312698 | BI-DIRECTIONAL STEERABLE SHEATH - A deflectable sheath with increased range of curvature for human use is provided. The improvement focuses on the use of different durometer polymers that compose the lumen in the portion of deflection. The use of differing durometer polymers allow the deflectable sheath to be bent in a multitude of asymmetric curvature radii therefore providing the physician with a sheath that can traverse different regions of the body than with previous sheaths. | 12-17-2009 |
| 20090288280 | PROCESS FOR MANUFACTURING EMI FILTERS UTILIZING COUNTER-BORED CAPACITORS TO FACILITATE SOLDER RE-FLOW - An EMI filtered terminal assembly includes at least one conductive terminal pin, a feedthrough capacitor, and a counter-bore associated with a passageway through the capacitor and the lead wire. Preferably, the feedthrough capacitor having counter-drilled holes on its top side is first bonded to a hermetic insulator. The counter-bore in the capacitor provides greater volume for the electro-mechanical attachment between the capacitor and the lead wire, permitting robotic dispensing of, for example, thermal-setting conductive adhesive. | 11-26-2009 |
| 20090281524 | BI-DIRECTIONAL SHEATH DEFLECTION MECHANISM - A deflectable sheath for use in medical procedures in the vasculature is described. The sheath includes a handle supporting the sheath. Two pull wires run along opposite sides of the sheath to anchors at the deflectable distal end. The handle includes a rotatable member that moves a threaded member including wire guide in a back and forth translation. As the movement occurs, force is applied to either one or the other of the pull wires to cause deflection of distal end of the sheath in either and upwardly or a downwardly direction with respect to the longitudinal axis of the sheath. | 11-12-2009 |
| 20090279232 | ELECTROLYTIC CAPACITORS WITH MULTIPLE ANODES AND ANODE LEAD CONFIGURATIONS THEREOF - A capacitor comprising a cylindrical casing sidewall extending to closed first and second end walls and an anode assembly housed therein including a first, second and third anodes is described. Each anode comprises an anode sidewall extending to first and second anode end walls and a conductive lead extending therefrom. The anodes are in a side-by-side relationship within the casing with their respective sidewalls parallel to each other. The cathode of the capacitor may include a first conductive substrate supporting a cathode active material. The conductive substrate is wrapped around the anodes, and the cathode active material is disposed on the substrate at locations such that the respective sidewalls of the anodes are opposed by cathode active material. A separator is positioned between the side-by-side anodes and the cathode. The open volume within the casing is filled with an electrolyte, and the casing is hermetically sealed. | 11-12-2009 |
| 20090259265 | ELECTRONIC NETWORK COMPONENTS UTILIZING BIOCOMPATIBLE CONDUCTIVE ADHESIVES FOR DIRECT BODY FLUID EXPOSURE - An implantable passive or active electronic network component or component network is provided which is suitable for prolonged direct body fluid exposure and is attachable to a conductive surface, circuit trace, lead or electrode. The electronic network component or component network includes (1) a non-conductive body of biocompatible and non-migratable material, (2) a conductive termination surface of biocompatible and non-migratable material, associated with the body, and (3) a connection material of biocompatible and non-migratable material, for conductively coupling the termination surface to the conductive surface, circuit trace, lead or electrode. The electronic network component may include a capacitor, a resistor, an inductor, a diode, a transistor, an electronic switch, a MEMs device, or a microchip. A biocompatible and non-migratable adhesive is utilized to conductively couple components of the individual components of the electronic network, such as the conductive surface, circuit trace, lead or electrode. | 10-15-2009 |
| 20090246561 | IN PARALLEL HYBRID POWER SOURCE COMPRISING A LITHIUM/OXYHALIDE ELECTROCHEMICAL CELL COUPLED WITH A LITHIUM ION CELL - A lithium oxyhalide cell electrically connected in parallel with a lithium ion cell is described. Importantly, the open circuit voltage of the freshly built primary lithium oxyhalide cell is equal to or less that the open circuit voltage of the lithium ion cell in a fully charged state. This provides a power system that combines the high capacity of the primary cell with the high pulse power of the secondary cell. This hybrid power system exhibits increased rate capability, higher capacity and improved safety in addition to elimination of voltage delay in comparison to a comparable lithium oxyhalide cell discharge alone. | 10-01-2009 |
| 20090243756 | SHIELDED THREE-TERMINAL FLAT-THROUGH EMI/ENERGY DISSIPATING FILTER - A shielded three-terminal flat-through EMI/energy dissipating filter includes an active electrode plate through which a circuit current passes between a first terminal and a second terminal, a first shield plate on a first side of the active electrode plate, and a second shield plate on a second side of the active electrode plate opposite the first shield plate. The first and second shield plates are conductively coupled to a grounded third terminal. In preferred embodiments, the active electrode plate and the shield plates are at least partially disposed with a hybrid flat-through substrate that may include a flex cable section, a rigid cable section, or both. | 10-01-2009 |
| 20090239141 | BATTERY LID WITH INTEGRAL THICK BOSS SURROUNDING A TERMINAL HOLE - An improved lid for closing the open end of a casing of an electrochemical energy storage device is described. The improved lid comprises a flat region having spaced apart upper and lower planar surfaces joined by a peripheral edge, an angled transition forming a boss protruding from the lower surface, and a bore extending through the boss to the upper surface. An electrical energy storage device is also described, which includes the improved lid secured to the open end of the casing container of the device. | 09-24-2009 |
| 20090192578 | HEADER OVER-MOLDED ON A FEEDTHROUGH ASSEMBLY FOR AN IMPLANTABLE DEVICE - A header assembly for connecting a conductor terminating at a body organ with an implantable medical device is described. The header assembly comprises a base plate, a feedthrough subassembly disposed in the base plate and comprising a ceramic-to-metal seal with first and second feedthrough wires passing through the ceramic-to-metal seal; a first electrically conductive terminal connected to a distal end of the first feedthrough wire and having a first lead opening sized to receive a first portion of a lead for the conductor; a second electrically conductive terminal connected to a distal end of the second feedthrough wire and having a second lead opening sized to receive a second portion of the lead for the conductor; a body of polymeric material molded in a two-part construction to encase the conductive terminals and their feedthrough wires except for a first bore communicating from outside the polymeric body to the first and second lead openings aligned in a first co-axial relationship. Preferably, the polymeric body comprises a first polymeric material such as Techothane® or Polysulfone® encasing the terminals except the bore and an epoxy as a second polymeric material molded over the first polymeric material. | 07-30-2009 |
| 20090128986 | HYBRID DISCOIDAL/TUBULAR CAPACITOR - A hybrid capacitor includes a body of dielectric material having spaced-apart first and second surfaces. A first electrode is associated with the first surface. A second electrode is associated with the second surface. One or more third electrodes are transversely disposed within the dielectric body between the first and second electrodes. Either the first or second electrode is not conductively coupled to any electrode transversely extending into the body. The resulting arrangement provides a hybrid capacitor having characteristics of both a tubular capacitor and a discoidal capacitor. | 05-21-2009 |
| 20090117457 | Electrochemical Cells And Method Of Manufacturing Same - An electrochemical cell comprising a casing, an anode comprising anode active material, a cathode, and an electrolyte solution activating the cathode and the anode is described. In one embodiment, the cathode is comprised of a first current collector, first and second sheets of a first cathode active material in contact with the first current collector, a second current collector, third and forth sheets of the first cathode active material in contact with the second current collector, and a first sheet of a second cathode active material in non-adherent and congruent contact with the second and third sheets of the first cathode active material. | 05-07-2009 |
| 20090116167 | PASSIVE ELECTRONIC NETWORK COMPONENTS DESIGNED FOR DIRECT BODY FLUID EXPOSURE - An EMI filter capacitor assembly and implantable passive electronic network components utilize biocompatible and non-migratable materials to adapt the electronic components for direct body fluid exposure. The assembly includes a capacitor having first and second sets of electrode plates which are constructed of non-migratable biocompatible material. A conductive hermetic terminal of non-migratable and biocompatible material adjacent to the capacitor is conductively coupled to the second set of electrode plates. One or more conductive terminal pins having at least an outer surface of non-migratable and biocompatible material are conductively coupled to the first set of electrode plates, while extending through the hermetic terminal in non-conductive relation. The terminal pins may be in direct contact with the first set of electrode plates, or in contact with a termination surface of conductive connection material. The termination surface is also constructed of non-migratable and biocompatible materials. | 05-07-2009 |
| 20090103246 | INTERCONNECTIONS FOR MULTIPLE CAPACITOR ANODE LEADS - An anode assembly for a capacitor is described. The anode assembly comprises a first anode including a first conductive lead disposed in a first groove in a junction bar, a second anode including a second conductive lead disposed in a second groove in the junction bar, and an anode terminal lead disposed in a third groove in the junction bar. The capacitor including the anode assembly is further comprised of a cathode comprising a conductive substrate supporting a cathode active material facing the first and second anodes, and a separator positioned there between to prevent the first and second anodes and the cathode from contacting each other. The anode assembly, the cathode, and the separator are sealed inside of a casing, and the casing is filled with a working electrolyte. | 04-23-2009 |
| 20090081552 | ELECTROCHEMICAL CELL WITH TIGHTLY HELD ELECTRODE ASSEMBLY - An electrochemical cell comprising a conductive casing housing an electrode assembly provided with a stack holder surrounding the electrode assembly is described. The stack holder is of an elastic material that serves to maintain the anode and cathode in a face-to-face alignment throughout discharge. This is particularly important in later stages of cell life. As the cell discharges, anode active material is physically moved from the anode to intercalate with the cathode active material. As this mass transfer occurs, the cathode becomes physically larger and the anode smaller. This can lead to misalignment. However, the stack holder prevents such misalignment by maintaining a constrictive force on the electrode assembly throughout discharge. | 03-26-2009 |
| 20090035652 | NON-PRISMATIC ELECTROCHEMICAL CELL - An electrochemical cell with a non-prismatic casing and solid cathode is the present invention. The casing has a front side wall, a back side wall, a right side wall, a left side wall, a top wall, and bottom wall. The non-prismatic function is obtained by having the right and left side walls having tapered widths—wide near the top wall and narrower near the bottom wall. A solid anode having a uniform height is positioned against the front side wall and/or the back side wall. A solid cathode is surrounded by a separator and has at least a tapered height to correspond to the tapered right and left side walls wherein the anode's front side is parallel with the front major sidewall and the anode's back side is parallel with the back major sidewall. This non-prismatic design decreases the formation of voids and maximizes the amount of cathode in non-prismatic casing designs to obtain the optimal electrochemical capabilities. | 02-05-2009 |
| 20080294220 | FEEDTHROUGH FILTER TERMINAL ASSEMBLIES WITH BREATHABLE COMPONENTS TO FACILITATE LEAK TESTING - A feedthrough terminal assembly for an active implantable medical device (AIMD) includes a conductive terminal pin or lead wire which extends through a conductive ground plane of the AIMD in non-conductive relation. A feedthrough capacitor associated with the terminal pin or lead wire has first and second sets of electrode plates coupled, respectively, to the conductive pin or lead wire and to the ground plane. A breathable electromechanical connection material conductively couples the capacitor's electrode plates to respective components of the AIMD, which allows helium gas to pass freely therethrough during a standard pressurized or vacuum pull helium leak detection test. A breathable washer may be disposed between an alumina insulator and a surface of the capacitor. An additional further breathable coating or conformal coating may be placed over a surface of the feedthrough capacitor disposed toward the interior of the AIMD. | 11-27-2008 |
| 20080269591 | BAND STOP FILTER EMPLOYING A CAPACITOR AND AN INDUCTOR TANK CIRCUIT TO ENHANCE MRI COMPATIBILITY OF ACTIVE MEDICAL DEVICES - A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 10-30-2008 |
| 20080236731 | Thermo-Encapsulating Apparatus For Providing A Separator Enveloping An Electrode Of An Electrical Energy Storage Device And Method - An apparatus and method for cutting and heat sealing separator materials enveloping individually shaped electrode is described. The electrodes can be cathodes, anodes or other active components for incorporation into batteries, capacitors, and other implantable medical devices. | 10-02-2008 |
