Patent application number | Description | Published |
20090112291 | CLOSED LOOP LONG RANGE RECHARGING - A charging system for an implantable medical device having a secondary coil. The charging system includes an external power source having at least one primary coil, a modulation, circuit operatively coupled to the primary coil and capable of driving it in a manner characterized by a charging parameter, and a sensor in communication with the modulation circuit and capable of sensing a condition indicating a need to adjust the charging parameter during a charging process. The parameter may be varied so that data sensed by the sensor meets a threshold requirement, which may be based on a patient preference, a government regulation, a recommendation promulgated by a health authority and/or a requirement associated with another device carried by the patient. In one embodiment, the regulation dictates maximum magnetic field exposure, and a field limiting circuit is employed to adjust the charging process. | 04-30-2009 |
20100114249 | NON-HERMETIC DIRECT CURRENT INTERCONNECT - A modular implantable medical device (IMD) may include a non-hermetic interconnect. The non-hermetic interconnect may electrically couple a first module and a second module of the modular IMD. A conductor in the non-hermetic interconnect may conduct electrical energy from the first module to the second module under an applied direct current (DC) voltage. | 05-06-2010 |
20100114253 | PASSIVE CHARGE OF IMPLANTABLE MEDICAL DEVICE UTILIZING EXTERNAL POWER SOURCE AND METHOD - External power source for an implantable medical device implanted in a patient, the implantable medical device having a secondary coil operatively coupled to therapeutic componentry and method therefore. A modulation circuit is operatively coupled to a power source. A plurality of primary coils are operatively coupled to the modulation circuitry and physically associated with an article into which the patient may come into proximity. The modulation circuit drives at least one of the plurality of primary coils. A sensor is coupled to modulation circuit and is adapted to sense proximity of a component related to the implantable medical device. The modulation circuit commences operation to drive at least one of the plurality of primary coils when the sensor senses proximity with the component related to the implantable medical device. | 05-06-2010 |
20120078268 | ARCUATE INTRODUCER - An introducer for a medical lead, the introducer having an arcuate component for creating an arcuate path in a patient. When used to percutaneously implant a medical device such as a medical lead with electrodes, the implanted lead has an arcuate configuration. The implanted lead can be used to at least partially encircle or bracket a region of chronic pain and provide therapeutic electrical signals to the region. | 03-29-2012 |
20120078332 | HELICAL ELECTRODE ARRANGEMENTS FOR MEDICAL LEADS - A medical lead includes a lead body having a proximal end for electrical connection to an implantable electric signal generator and a distal end portion having a plurality of electrodes extending in a helical manner longitudinally along the distal end portion. Adjacent helical electrodes may be offset, for example, 90 degrees or 180 degrees. The helical electrodes may extend less than, greater than, or 360 degrees. The electrode arrangement provides increased surface area, improving the capability of positioning the lead against the nerve as desired. | 03-29-2012 |
20120078334 | ELECTRODE ARRANGEMENTS FOR SUBORBITAL FORAMEN MEDICAL LEAD - A medical lead includes a plurality of electrodes on an annular distal end portion of the lead. The electrodes may be arranged along a circle concentric with the center of a void defined by the annular portion. The annular medical lead design is well suited for application of electrical signal therapy to the suborbital nerve at its point of exit from the inferior orbital foramen in the skull. | 03-29-2012 |
20120083867 | HUB FOR IMPLANTABLE MEDICAL LEADS | 04-05-2012 |
20120095540 | ELECTRODE ARRANGEMENTS FOR MEDICAL LEAD - An implantable medical lead includes a lead body having a proximal portion having a longitudinal axis and an arcuate distal body portion extending in the direction of the longitudinal axis. The arcuate distal body portion has a concave surface. The lead includes a plurality of elongate electrodes disposed at the arcuate distal end portion of the lead body along the concave surface. The electrodes extend substantially parallel to the longitudinal axis of the lead body. | 04-19-2012 |
20120108998 | THERAPY CONTROL BASED ON A PATIENT MOVEMENT STATE - A movement state of a patient is detected based on brain signals, such as an electroencephalogram (EEG) signal. In some examples, a brain signal within a dorsal-lateral prefrontal cortex of a brain of the patient indicative of prospective movement of the patient may be sensed in order to detect the movement state. The movement state may include the brain state that indicates the patient is intending on initiating movement, initiating movement, attempting to initiate movement or is actually moving. In some examples, upon detecting the movement state, a movement disorder therapy is delivered to the patient. In some examples, the therapy delivery is deactivated upon detecting the patient is no longer in a movement state or that the patient has successfully initiated movement. In addition, in some examples, the movement state detected based on the brain signals may be confirmed based on a signal from a motion sensor. | 05-03-2012 |
20120130438 | IMPLANTABLE MEDICAL DEVICE WITH SWAPPABLE HEADERS - An implantable electrical medical device system includes a device body portion having a plurality of contacts operably coupled to discrete channels of electronics. One or more swappable headers may be attached to the device body portion by an end user, such as an implanting physician, to operably couple internal lead receptacle contacts in the header to the contacts of the device body portion. The swappable headers may have lead receptacles configured to receive differing types or combinations of leads, allowing an end user to select one or more appropriate headers as desired. | 05-24-2012 |
20120316619 | PROGRAMMING INTERFACE FOR STIMULATION THERAPY - The disclosure is directed to programming implantable stimulators to deliver stimulation energy via one or more implantable leads having complex electrode array geometries. The disclosure also contemplates guided programming to select electrode combinations and parameter values to support efficacy. The techniques may be applied to a programming interface associated with a clinician programmer, a patient programmer, or both. A user interface permits a user to view electrodes from different perspectives relative to the lead. For example, the user interface provides a side view of a lead and a cross-sectional view of the lead. The user interface may include an axial control medium to select and/or view electrodes at different axial positions along the length of a lead, and a rotational control medium to select and/or view electrodes at different angular positions around a circumference of the lead. | 12-13-2012 |
20140052227 | Implantable Medical Leads and Systems that Utilize Reflection Points to Control Induced Radio Frequency Energy - Implantable medical leads and systems utilize reflection points within the lead to control radio frequency current that has been induced onto one or more filars. The radio frequency current may be controlled by the reflection points to block at least some of the radio frequency current from reaching an electrode of the lead and to dissipate at least some of the radio frequency current as heat on the filar. Controlling the radio frequency current thereby reduces the amount that is dissipated into bodily tissue through one or more electrodes of the lead and reduces the likelihood of tissue damage. The reflection points may be created by physical changes such as to material or size in the filar and/or in insulation layers that may be present such as an inner jacket about the filar and an outer jacket formed by the body of the lead. | 02-20-2014 |
20140088666 | UNWRAPPED 2D VIEW OF A STIMULATION LEAD WITH COMPLEX ELECTRODE ARRAY GEOMETRY - The disclosure is directed to programming implantable stimulators to deliver stimulation energy via one or more implantable leads having complex electrode array geometries. The disclosure also contemplates guided programming to select electrode combinations and parameter values to support efficacy. The techniques may be applied to a programming interface associated with a clinician programmer, a patient programmer, or both. A user interface permits a user to view electrodes from different perspectives relative to the lead. For example, the user interface provides a side view of a lead and a cross-sectional view of the lead. The user interface may include an axial control medium to select and/or view electrodes at different axial positions along the length of a lead, and a rotational control medium to select and/or view electrodes at different angular positions around a circumference of the lead. | 03-27-2014 |
20140107731 | USER INTERFACE WITH 3D ENVIRONMENT FOR CONFIGURING STIMULATION THERAPY - The disclosure describes a method and system that allows a user to configure electrical stimulation therapy by defining a three-dimensional (3D) stimulation field. After a stimulation lead is implanted in a patient, a clinician manipulates the 3D stimulation field in a 3D environment to encompass desired anatomical regions of the patient. In this manner, the clinician determines which anatomical regions to stimulate, and the system generates the necessary stimulation parameters. In some cases, a lead icon representing the implanted lead is displayed to show the clinician where the lead is relative to the 3D anatomical regions of the patient. | 04-17-2014 |
20140107747 | COMBINATION THERAPY INCLUDING PERIPHERAL NERVE FIELD STIMULATION - Delivery of peripheral nerve field stimulation (PNFS) in combination with one or more other therapies is described. The other therapy delivered in combination with PNFS may be, for example, a different type of neurostimulation, such as spinal cord stimulation (SCS), or a drug. PNFS and the other therapy may be delivered simultaneously, in an alternating fashion, according to a schedule, and/or selectively, e.g., in response to a request received from a patient or clinician. A combination therapy that includes PNFS may be able to more completely address complex or multifocal pain than would be possible through delivery of either PNFS or other therapies alone. Further, the combination of PNFS with one or more other therapies may reduce the likelihood that neural accommodation will impair the perceived effectiveness PNFS or the other therapies. | 04-17-2014 |
20140107749 | METHOD FOR DELIVERY OF ELECTRICAL STIMULATION - The disclosure describes an implantable neurostimulator device for delivery of neurostimulation to treat head, neck, or facial pain or tension, including pain or tension caused by occipital neuralgia. The device may be a neurostimulation device having a miniaturized housing with a low profile that permits subcutaneous implantation at a stimulation site directly adjacent a neuralgic region at the back of the neck of a patient. For example, the device may be subcutaneously implanted at the back of the neck of a patient to relieve symptoms of occipital neuralgia. | 04-17-2014 |
20140114374 | PERIPHERAL NERVE FIELD STIMULATION AND SPINAL CORD STIMULATION - Delivery of peripheral nerve field stimulation (PNFS) in combination with one or more other therapies is described. The other therapy delivered in combination with PNFS may be, for example, a different type of neurostimulation, such as spinal cord stimulation (SCS), or a drug. PNFS and the other therapy may be delivered simultaneously, in an alternating fashion, according to a schedule, and/or selectively, e.g., in response to a request received from a patient or clinician. A combination therapy that includes PNFS may be able to more completely address complex or multifocal pain than would be possible through delivery of either PNFS or other therapies alone. Further, the combination of PNFS with one or more other therapies may reduce the likelihood that neural accommodation will impair the perceived effectiveness PNFS or the other therapies. | 04-24-2014 |
20150057730 | IMPLANTABLE MEDICAL LEADS AND SYSTEMS THAT UTILIZE REFLECTION POINTS TO CONTROL INDUCED RADIO FREQUENCY ENERGY - Implantable medical leads and systems utilize reflection points within the lead to control radio frequency current that has been induced onto one or more filars. The radio frequency current may be controlled by the reflection points to block at least some of the radio frequency current from reaching an electrode of the lead and to dissipate at least some of the radio frequency current as heat on the filar. Controlling the radio frequency current thereby reduces the amount that is dissipated into bodily tissue through one or more electrodes of the lead and reduces the likelihood of tissue damage. The reflection points may be created by physical changes such as to material or size in the filar and/or in insulation layers that may be present such as an inner jacket about the filar and an outer jacket formed by the body of the lead. | 02-26-2015 |
Patent application number | Description | Published |
20100113964 | DETERMINING INTERCARDIAC IMPEDANCE - A system and method for determining complex intercardiac impedance to detect various cardiac functions are disclosed involving a signal generator means for providing an adjustable direct current signal, a modulator for modulating the adjustable direct current signal to produce a modulated signal, at least one electrode for propagating the modulated signal across a myocardium, at least one sensor for detecting an outputted modulated signal from the myocardium, and at least one circuit to reduce the influence of process noise (aggressors) in the outputted modulated signal. The at least one circuit comprises an amplifier, a demodulator, and an integrator. The amplitude and phase of the final outputted modulated signal indicate the complex impedance of the myocardium. Changes in the complex impedance patterns of the myocardium provide indication of reduced oxygen and blood flow to the myocardium. The apparatus can be employed in implantable devices, including cardiac pacemakers and implantable cardioverter defibrillators. | 05-06-2010 |
20100114223 | DETERMINING INTERCARDIAC IMPEDANCE - A system and method for determining complex intercardiac impedance to detect various cardiac functions are disclosed involving a signal generator means for providing an adjustable direct current signal, a modulator for modulating the adjustable direct current signal to produce a modulated signal, at least one electrode for propagating the modulated signal across a myocardium, at least one sensor for detecting an outputted modulated signal from the myocardium, and at least one circuit to reduce the influence of process noise (aggressors) in the outputted modulated signal. The at least one circuit comprises an amplifier, a demodulator, and an integrator. The amplitude and phase of the final outputted modulated signal indicate the complex impedance of the myocardium. Changes in the complex impedance patterns of the myocardium provide indication of reduced oxygen and blood flow to the myocardium. The apparatus can be employed in implantable devices, including cardiac pacemakers and implantable cardioverter defibrillators. | 05-06-2010 |
20100198309 | ISOLATION CIRCUITRY AND METHOD FOR GRADIENT FIELD SAFETY IN AN IMPLANTABLE MEDICAL DEVICE - An implantable medical device is provided for isolating an elongated medical lead from internal device circuitry in the presence of a gradient magnetic or electrical field. The device includes an isolation circuit adapted to operatively connect an internal circuit to the medical lead in a first operative state and to electrically isolate the medical lead from the internal circuit in a second operative state. | 08-05-2010 |
20110130984 | ESTIMATING REMAINING BATTERY SERVICE LIFE IN AN IMPLANTABLE MEDICAL DEVICE - Methods for estimating a remaining service life of an implantable medical device (IMD) battery are presented. In one embodiment, a characteristic discharge model of the battery is employed. Systems employing the methods may include an external device coupled to the IMD, for example, via a telemetry communications link, wherein a first portion of a computer readable medium included in the IMD is programmed to provide instructions for the measurement, or tracking, of time and the measurement of battery voltage, and a second portion of the computer readable medium included in the external device is programmed to provide instructions for carrying out the calculations when the voltage and time data is transferred via telemetry from the IMD to the external device. | 06-02-2011 |
20110270362 | ACTIVE CIRCUIT MRI/EMI PROTECTION POWERED BY INTERFERING ENERGY FOR A MEDICAL STIMULATION LEAD AND DEVICE - An implantable lead for use with a medical device (IMD) includes active circuits incorporated into the lead to reduce the creation of an induced current, or dissipate the induced current and heat created due to an induced current in the lead. The active circuits are powered by the magnetic resonant imaging energy or interfering magnetic or electrical fields. According to various embodiments, the lead and/or its components can be provided to reduce or dissipate a current and heat induced by various external magnetic or electrical fields. | 11-03-2011 |
20120101545 | IMPLANTABLE MEDICAL DEVICE IMPEDANCE MEASUREMENT MODULE FOR COMMUNICATION WITH ONE OR MORE LEAD-BORNE DEVICES - Example techniques for communicating between two medical devices are described. One medical device may be an implantable medical device. Another medical device may be a lead-borne implantable medical device. The lead-borne implantable medical device may be referred to as a satellite. The implantable medical device may measure impedance of a path including at least two electrodes, at least one of which is on the lead, using an impedance measurement module. In some example implementations of this disclosure, the implantable medical device may also use the impedance measurement module to communicate with the satellite on the lead. | 04-26-2012 |
20130165987 | FAULT TOLERANT PACING - Methods and/or devices may be configured to monitor the performance of pacing therapy and provide fault-tolerant operation to provide therapy in the event of certain failure modes occurring in the pacing delivery circuits, leads, and/or lead/tissue interfaces. Generally, the methods and/or devices may provide fault-detection, fault-recovery and fault-handling to, e.g., handle potential faults. | 06-27-2013 |