Abstract: A leadless intra-cardiac medical device comprises an integrated L-C resonant circuit pressure sensor. In some embodiments, the pressure sensor comprises a passive sensor that measures pressure in response to an externally generated excitation signal. In some embodiments, the pressure sensor comprises an active sensor that measures pressure in response to an internally generated excitation signal.

Abstract: Active rejection techniques are used to cancel MRI gradient signals in an implantable medical device. An active component placed in an input channel of the implantable medical device actively rejects MRI gradient signals received on the input channel. A sensing circuit that senses an external MRI gradient signal generates a control signal that controls the active component. For example, the control signal may be the inverse of the external MRI gradient signal. An active component that receives an input signal including a desired signal component (e.g., a cardiac signal) and an undesired MRI gradient signal component may thus use this control signal to reject the undesired MRI gradient signal component.

Abstract: An implantable medical device is provided for detecting transportless ventricular rhythm of a heart lacking atrial transport and comprises a housing, sensors configured to be located proximate to a heart, a sensing module to sense cardiac signals representative of a rhythm originating from the heart and a rhythm detection module. The rhythm detection module determines a change in AV association and identifies a potential ventricular complex with loss of atrial transport (VCLAT) based on the change in AV association.

Abstract: An exemplary method includes delivering a cardiac pacing therapy using an electrode configuration for left ventricular, single site pacing or left ventricular, multi-site pacing, measuring a series of interventricular conduction delays using the left ventricular pacing and right ventricular sensing (IVCD-LR), comparing the interventricular conduction delay values to a limit and, based on the comparison, deciding whether to change the electrode configuration for the left ventricular pacing. Other exemplary methods, devices, systems, etc., are also disclosed.

Abstract: An interface device provides one or more electrical connection points disposed on a connector sleeve. The connection points provide electrical communication between a lead connector end of an implantable medical lead and one or more leads of a testing device in such a manner as to minimize potential damage to the lead connector end.

Abstract: An implantable therapy lead employs electrical conductors configured to enhance the abrasion resistance of the lead. Specifically, conductors are configured to create a surface contact area with walls of a wall lumen of a tubular body that is greater than would otherwise be possible with traditional conductors that have a circular transverse cross-section. As a result, the abrasion pressure of the conductors against the lumen walls is decreased for the conductors disclosed herein as compared to that of traditional conductors.

Abstract: An implantable therapy lead employs electrical conductors configured to enhance the abrasion resistance of the lead. Specifically, conductors are configured to create a surface contact area with walls of a wall lumen of a tubular body that is greater than would otherwise be possible with traditional conductors that have a circular transverse cross-section. As a result, the abrasion pressure of the conductors against the lumen walls is decreased for the conductors disclosed herein as compared to that of traditional conductors.

Abstract: An antenna assembly is configured for use with an external device that is configured to wirelessly communicate with an implantable medical device (IMD). The antenna assembly may include an antenna member pivotally secured to a structure through a feed post, and a fixed tail fixed to the structure. The antenna member may be pivotal between a first orientation in which the antenna member electrically connects to the fixed tail, and a second orientation in which the antenna member is disconnected from the fixed tail. The antenna member and the fixed tail cooperatively operate in a first antenna mode when the antenna member is in the first orientation. The antenna member is configured to operate in a second antenna mode when the antenna member is in the second orientation.

Abstract: Techniques are provided for use with an implantable cardiac rhythm management (CRMD) system equipped to deliver neurostimulation to acupuncture sites within anterior regions of the neck, thorax or abdomen of the patient. Parameters associated with the health of the patient are detected, such as parameters indicative of arrhythmia, heart failure and hypertension.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.

Abstract: Methods and systems are provided that utilize reference morphology templates as morphology based filters to reduce false or inappropriate ST episode detections when an ST shift episode is otherwise diagnosed. The methods and systems provide ST morphology discrimination. The methods and systems sense cardiac signals of a heart, obtain a reference morphology template based on at least one baseline cardiac signal associated with a normal physiology waveform, and identify a potential ST segment shift from the cardiac signals. The methods and systems compare the cardiac signals to the reference morphology template to derive a morphology indicator representing a degree to which the cardiac signals match the reference morphology template; and declare the potential ST segment shift to be an actual ST segment shift based on the morphology indicator.

Abstract: Implantable systems, and methods for use therewith, are provided for monitoring for an impending myocardial infarction. A signal indicative of changes in arterial blood volume is obtained. Such a signal can be a photoplethysmography signal or an impedance plethysmography signal. For each of a plurality of periods of time, a metric indicative of the areas under the curve of the signal or number of inflections in the signal is determined. An impending myocardial infarction is monitored for based on changes in the metric indicative of the area under the curve of the signal or number of inflections in the signal, and an alert and/or therapy is triggered in response to an impending myocardial infarction being predicted.

Abstract: Exemplary methods are described for providing responsive vascular control with or without cardiac pacing. An implantable device with responsive vascular and cardiac controllers interprets physiological conditions and responds with an appropriate degree of vascular therapy applied as electrical pulses to a sympathetic nerve. In one implementation, an implantable device is programmed to deliver the vascular therapy in response to low blood pressure or orthostatic hypotension. The device may stimulate the greater splanchnic nerve, to effect therapeutic vasoconstriction. The vascular therapy is dynamically adjusted as the condition improves. In one implementation to benefit impaired physical mobility, vascular therapy comprises vasoconstriction and is timed to coincide with a recurring segment of the cardiac cycle. The vasoconstriction assists circulation and venous return in the lower limbs of inactive and bedridden individuals.

Abstract: Techniques are provided for estimating defibrillation impedance of an implantable cardioverter/defibrillator (ICD). Briefly, at least two low-voltage resistance values are measured at different voltages using a pair of stimulation electrodes connected to the ICD. High-voltage defibrillation impedance is then estimated by the ICD based on a weighted combination of the measured resistance values. In one example, a set of weight coefficients, calculated during an initial calibration procedure, are applied to the measured resistance values to produce the estimate of the high-voltage defibrillation impedance. The weight coefficients are updated whenever a defibrillation shock is delivered, based on actual defibrillation impedance values measured during the shock.

Abstract: Embodiments of the present invention relate to implantable systems, and methods for use therein, that can detect T-wave alternans and analyze the detected alternans to provide information regarding cardiac instabilities and predict impending arrhythmias.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.

Abstract: A method of manufacturing an implantable medical lead is disclosed herein. The method may include: providing a lead body including a proximal end, a distal end, and an electrode near the distal end; provide a conductor extending between the proximal and distal ends; providing a crimp including a ribbon-like member and extending the ribbon-like member around the conductor; and mechanically and electrically connecting the ribbon-like member to the electrode.