摘要:
An implantable medical device system includes a medical electrical lead having a connector assembly and a connector bore for receiving the lead connector assembly. The lead includes a distal portion having a first outer diameter and a distal sealing member, an intermediate portion having a second outer diameter smaller than the first outer diameter, and a connector pin extending from the intermediate portion, the connector pin having an outer diameter corresponding to a DF-1 standard.
摘要:
A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.
摘要:
An elongate body of a medical electrical lead includes at least one conductor formed into a coil that includes a first portion and a second portion, wherein the first portion extends within an outer insulation sheath and the second portion extends outside the outer insulation sheath to be exposed to an environment external to the lead body as an energy dissipating shunt.
摘要:
A lead connector arrangement includes a non-cylindrically shaped connector pin coupled to a lead conductor and a connector sleeve assembly for receiving the non-cylindrically shaped connector pin. The connector sleeve assembly includes an insert with an axial bore formed therein that complements the shape of the non-cylindrical connector pin. According to one embodiment, the non-cylindrical connector pin may be provided in the form of a triangular, square, rectangular, or hexagonal shape. The axial bore has a complimentary shape to receive the connector pin. When the connector pin is threaded through the connector sleeve assembly using a pull-wire device, the pull-wire device may be unscrewed from the connector pin without causing axial rotation of the lead conductor when the connector pin is fully inserted within the axial bore.
摘要:
A system for coupling a medical electrical lead to a medical device includes an upsizing sleeve having a plurality of spring contacts, a plurality of seal members, and contact members joined in an alternating manner with relatively rigid insulation members. At least one contact member includes an inner surface for housing a contact from the plurality of spring contacts and at least one insulation member includes an inner surface for housing a seal from the plurality of seal members.
摘要:
A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.
摘要:
Described techniques include delivering cardiac pacing therapy from a medical device to a chamber of a heart via a first electrode configuration and determining that the delivery of cardiac pacing therapy via the first electrode configuration inadequately captures the chamber. In response to such a determination, the medical device delivers cardiac pacing therapy to the chamber of the heart via a plurality of additional electrode configurations. The techniques further comprise determining a capture characteristic for each of the additional electrode configurations based on the delivery of cardiac pacing therapy to the chamber of the heart via the plurality of other electrode configurations. A new electrode configuration for cardiac pacing may be selected based on the capture characteristics of the various electrode configurations.
摘要:
A lead fixation tool includes a tapered opening for receiving and guiding a stylet into a lead. The fixation tool also includes an engagement mechanism for gripping a portion of the lead connector so that rotation of the tool causes rotation of an active fixation tip, such as a helical tip, coupled with the lead.
摘要:
A method of manufacturing a medical electrical device is presented. An inner diameter and an outer diameter of a connector ring is machined to form a first and a second flange extending from the inner diameter. An electric discharge machining wire burner is used to form a conductor channel in the inner diameter of the connector ring. A conductor is positioned within the conductor channel. A first distal end of the first flange is coupled to a second distal end of the second flange.
摘要:
A multi-conductor lead body having improved mechanical characteristics and improved manufacturability is disclosed. The lead body includes multiple conductors wound around a generally cylindrical or tubular, insulative core member. Ones of the conductors are spaced from other ones of the conductors by means of insulative strands or tubes wound around the core intermediate the conductors. The conductors may be stranded or cabled conductors. The core may be an insulative cylindrical or tubular member having a centrally located tensile reinforcement member, or may take the form of an insulated coiled conductor, allowing the use of a centrally located stylet to place the lead. Preferably, conductors and insulative strands or tubes separating the conductors are sized relative to the core member such that a gap is allowed between the conductors and associated insulative strands or tubes. In one embodiment, at least one of the conductors may be electrically and mechanically coupled to one or more electrodes such as a defibrillation electrodes. The electrodes may each be may be positioned along a respective portion of the outer surface of the conductor. Openings fashioned in the jacket of the lead body expose the electrodes so that the outer surface of the electrodes is substantially adjacent to the outer surface of the lead body, thus providing a lead body having minimal dimensions.