31 results about "Icd lead" patented technology

A system and method for monitoring at least one chamber of a heart (e.g., a left ventricular chamber) during delivery of extrasystolic stimulation to determine if the desired extra-systole (i.e., ventricular mechanical capture following refractory period expiration) occurs. The system includes an implantable or external cardiac stimulation device in association with a set of leads such as epicardial, endocardial, and / or coronary sinus leads equipped with motion sensor(s). The device receives and processes acceleration sensor signals to determine a signal characteristic indicative of chamber capture resulting from one or more pacing stimulus delivered closely following expiration of the refractory period. A threshold optimization method optionally evaluates capture and at least one of: runs an iterative routine to establish or re-establish chamber capture for the PESP therapy, sets a logical flag relating to chamber capture status and stores parameter(s) relating to successful chamber capture for one or more subsequent cardiac cycles.

A method and system for the diagnosis of anomalies in a lead attached to an implantable medical device, such as an implantable cardioverter defibrillator (ICD), including an insulation breach resulting in a short circuit of the high-voltage shock pulse. Determination that the defibrillation pathway is shorted may be made by initial analysis of a Reference EGM and Diagnostic EGM and subsequent analysis of Differential Diagnostic EGMs. Upon determining if a specific defibrillation pathway is shorted, the nonessential defibrillation electrode of that pathway may be excluded from the defibrillation circuit, delivering defibrillation current only between functioning defibrillation electrodes. Alternatively, the ICD system can confirm the presence of a lead anomaly with one or more alternative diagnostic approaches. Patient and remote-monitoring alerts may be initiated.

One embodiment of the present invention provides an implantable cardioverter-defibrillator for subcutaneous positioning between the third rib and the twelfth rib within a patient, the implantable cardioverter-defibrillator including a housing including a first electrode; a telescoping lead assembly including a second electrode, wherein the telescoping lead assembly is electrically and mechanically coupled to the housing; and an electrical circuit located within and electrically coupled to the housing.

A collector electrode assembly which can be implanted by laparoscopy through the abdominal wall into the small pelvis of the human body includes a collector electrode for neurostimulation of nerves; a connection cable having an outer surface, said collector electrode being arranged at one end of said connection cable and comprising several outer segment electrodes which can be contacted individually and / or in groups and which are arranged axially one after another in the direction of the longitudinal extent of the collector electrode, wherein an insulating section is arranged axially between in each case two adjacent outer segment electrodes and permits electrical insulation of respective two adjacent outer segment electrodes; radially expandable fixing structures positioned on the collector electrode and radially expandable from a withdrawn position to a radially expanded position for fixing the collector electrode in place at said nerves; a visually perceptible direction marker on the outer surface of the connection cable, at least in a cable section which is spaced apart from axial ends of the connection cable and has an axial extent of at least 10 cm and / or at least 15% of total length of the connection cable, said direction marker indicating orientation of the connection cable to an operator using the assembly, and wherein the direction marker is designed and arranged in such a way that the identification of the orientation of the connection cable is possible at any desired axial section of the cable section having a maximum axial extent of 2 cm.

A subcutaneous implantable device is provided that includes a defibrillation electrode disposed along a portion of a lead, and a lead tip connected to the lead. The lead tip includes a trailing end coupled to a distal end of the lead, and first and second non-parallel sides extending from the trailing end that converge to a leading end that is configured to wedge between tissue layers as the lead is advanced subcutaneously.