Abstract: A body implantable lead assembly includes a lead body and a tip electrode assembly at the distal end of the lead body. The tip electrode assembly is detachably connected to the lead body by means of a threaded coupling actuatable by a stylet inserted through the lumen of the lead body. The lead body may therefore be removed leaving behind a chronically implanted tip electrode assembly. The invention has particular utility in the context of passive endocardial heart pacing leads whose tip electrode assemblies include tines which become entangled in the trabecular network of the heart, and are therefore difficult to remove.

Abstract: A mixed media outlet is provided that is capable of being mounted upon a wall and that includes ports that are typically designed to provide separate access to an electrical network and to an optical network. The wall mounted outlet can therefore permit a telephone to be connected to the electrical network, and a computer to be connected to the optical network. Alternatively, the outlet can permit a telephone to also be connected to either the same or a different optical network than the computer. The mixed media outlet includes a housing adapted to be wall mounted and first and second ports that are disposed within openings defined by the housing, such as a data port and a voice port.

Abstract: An implantable lead for electrical stimulation of the body includes an elongated multi-lumen tube with a distal tip electrode having a longitudinally extending central bore. A cable conductor is received in one lumen of the multi-lumen tube for electrical connection to the tip electrode and an elongated polymeric tubular liner having a coefficient of friction in the range of 0.01 to 0.20 is received in another lumen of the multi-lumen tube generally aligned with the bore of the distal tip electrode for freely receiving a guidewire through the tubular liner and through the bore of the distal tip electrode. An electrically conductive proximal pin is attached to the multi-lumen tubing distant from the tip electrode and, in one embodiment, the cable conductor and the proximal end of the polymeric tubular liner are attached to the proximal pin. Initially, the guidewire is implanted into the body along a desired trajectory.

Abstract: An implantable lead for electrical stimulation of the body includes an elongated multi-lumen tube with a distal tip electrode having a longitudinally extending central bore. A cable conductor is received in one lumen of the multi-lumen tube for electrical connection to the tip electrode and an elongated polymeric tubular liner having a coefficient of friction in the range of 0.01 to 0.20 is received in another lumen of the multi-lumen tube generally aligned with the bore of the distal tip electrode for freely receiving a guidewire through the tubular liner and through the bore of the distal tip electrode. An electrically conductive proximal pin is attached to the multi-lumen tubing distant from the tip electrode and, in one embodiment, the cable conductor and the proximal end of the polymeric tubular liner are attached to the proximal pin. Initially, the guidewire is implanted into the body along a desired trajectory.

Abstract: A single chronic implantable cardiac lead for use in the coronary sinus region of the heart provides both atrial and ventricular pacing and defibrillation therapy. The lead includes an elongated lead body having a distal end and a proximal end, a first electrode assembly including a ventricular pacing electrode and a ventricular defibrillation at the distal end, a second electrode assembly proximal to the first electrode assembly including at least one atrial pacing electrode and an atrial defibrillation electrode, and a further defibrillation electrode proximal to the second electrode assembly. The electrode assemblies and further defibrillation electrode are spaced apart so that when the lead is implanted within the coronary sinus region of the heart with the first electrode assembly adjacent the left ventricle, the second electrode assembly is adjacent the left atrium and the further defibrillation electrode is within the right atrium and/or the superior vena cava.

Abstract: A passive fixation, body implantable lead assembly has a cylindrical tip electrode whose outer side surface is covered with a thin dielectric insulating layer so as to mask an active, disk-shaped electrode surface at the distal extremity of the tip electrode. The active electrode surface preferably has an area less than about 1 mm2. An MCRD, in the form of a collar, may be carried by a proximal portion of the tip electrode. Supplementing a set of main tines projecting from the distal end portion of an insulating sheath housing the lead assembly is a set of nubby auxiliary tines extending from the sheath immediately adjacent the distal extremity thereof.

Abstract: An implantable lead for electrical stimulation of the body includes an elongated multi-lumen tube with a distal tip electrode having a longitudinally extending central bore. A cable conductor is received in one lumen of the multi-lumen tube for electrical connection to the tip electrode and an elongated polymeric tubular liner having a coefficient of friction in the range of 0.01 to 0.20 is received in another lumen of the multi-lumen tube generally aligned with the bore of the distal tip electrode for freely receiving a guidewire through the tubular liner and through the bore of the distal tip electrode. An electrically conductive proximal pin is attached to the multi-lumen tubing distant from the tip electrode and, in one embodiment, the cable conductor and the proximal end of the polymeric tubular liner are attached to the proximal pin. Initially, the guidewire is implanted into the body along a desired trajectory.

Abstract: An implantable lead for electrical stimulation of the body includes an elongated multi-lumen tube with a distal tip electrode having a longitudinally extending central bore. A cable conductor is received in one lumen of the multi-lumen tube for electrical connection to the tip electrode and an elongated polymeric tubular liner having a coefficient of friction in the range of 0.01 to 0.20 is received in another lumen of the multi-lumen tube generally aligned with the bore of the distal tip electrode for freely receiving a guidewire through the tubular liner and through the bore of the distal tip electrode. An electrically conductive proximal pin is attached to the multi-lumen tubing distant from the tip electrode and, in one embodiment, the cable conductor and the proximal end of the polymeric tubular liner are attached to the proximal pin. Initially, the guidewire is implanted into the body along a desired trajectory.

Abstract: Devices and methods are described that permit simple correction of a fiber optic polarity reversal problem. An adapter is described having receptacles to receive a connector on a first end, or user end, and on a second end, or contractor end. Both the receptacles provide keying arrangements so that the connectors can be received only when correctly oriented with respect to the adapter. The keying arrangement on the contractor end, however, is reversable so that the connector may be inserted in one of two predetermined orientations, at the behest of the contractor or installer. Adapters are also described that receive connectors only in a physically reversed orientation to counteract a reverse polarity condition. In addition, a jumper is described that can be interposed between a connector and adapter to correct a reverse polarity condition.

Abstract: An implantable cardiac device having a control unit and a single-pass lead adapted to be implanted within the coronary sinus region so as to provide therapeutic electrical stimulation, such as stimulation pulses, to the left atrium and the left ventricle. The single-pass lead includes a ventricular electrode and a plurality of atrial electrodes spaced along the lead. One of the atrial electrodes can be selected as the atrial pacing electrode by manipulating a connector that interconnects the single-pass lead to the control unit. In one embodiment, a pacing electrode/sensing electrode combination can be selected by manipulating a connector that interconnects the single-pass lead to the control unit.

Abstract: A cable storage device has a reel rotatably mounted in a frame. The reel has a hub that rotates with the reel. A connector panel has a plurality of connectors for interconnecting with an end of the cable on the reel. The connector panel will fit on a reel docking station for rotation with the reel. The connector panel also fits on a frame docking station while the reel is not to be rotated. A locking member is engaged by the connector panel when the connector panel is mounted to the reel docking station to allow rotation of the reel. The locking member is biased to a locking position when the connector panel is removed from the reel docking station. A cable presence sensor locks the reel against rotation if substantially all of the cable is pulled from the reel.

Abstract: A cable storage device has a reel rotatably mounted in a frame. The reel has a hub that rotates with the reel. A connector panel has a plurality of connectors for interconnecting with an end of the cable on the reel. The connector panel will fit on a reel docking station for rotation with the reel. The connector panel also fits on a frame docking station while the reel is not to be rotated. A locking member is engaged by the connector panel when the connector panel is mounted to the reel docking station to allow rotation of the reel. The locking member is biased to a locking position when the connector panel is removed from the reel docking station. A cable presence sensor locks the reel against rotation if substantially all of the cable is pulled from the reel.

Abstract: An optical fiber splice housing is provided for connection to a distribution frame adjacent to the rear of an optical fiber raceway unit. The splice housing comprises a cabinet having a front end defining a cabinet height and a cabinet width and a rear end defining a rear facing opening. The front end of a cabinet is adapted for connection to a distribution frame adjacent the rear side of the raceway member, and the cabinet height is not greater than the raceway height while the cabinet width is not greater than the raceway width. The splice housing can therefore be connected to a distribution frame adjacent to the rear side of a raceway unit without using additional vertical space in the frame and access to a splice tray mounted on the splice tray shelf can be had through the rear facing opening of the cabinet.

Abstract: A wall mount cabinet is provided that has a front door that pivots downward and a side door that pivots out to the side. The side door is latched to the front door such that opening of the front door also opens the side door.

Abstract: An optical fiber connector housing or facilitating the cross-connection or interconnection of optical fibers is provided having upper and lower plate members spaced apart from one another with the front edge of the lower plate member extending further forward than the front edge of the upper plate member. A connecter panel depends generally vertically downward from the front edge of the upper plate member thereby defining a shelf portion at the forward part of the lower plate member. A door is hingeably connected to the front edge of the lower plate member thereby defining a forward cable area, at least one side aperture, and at least one top aperture forward of the connector panel.

Abstract: A clamp assembly (10) is provided which can include first and second clamp halves (16, 18) with a base (50) mounted in each clamp path. The base has a cylindrical inner surface (54) which can clamp a cable thereto for strain relief. Alternatively, a flexible insert (86) having a plurality of cylindrical cavities (102) opening through the outer surface (100) thereof can receive a number of cables (12) to be clamped in the clamp assembly for strain relief. In another version, a plurality of nested inserts (106-116) can be provided on each base (50) allowing the selection of a particular insert dimension suitable the cable to be secured.

Abstract: An adjustable single-pass A-V lead for cardiac pacing comprises a ventricular lead body with a ventricular electrode at its distal tip, and an atrial sheath slidably mounted over the ventricular lead body. An atrial electrode is located on a portion of the atrial sheath that is adapted to form an outwardly-extending atrial bow. A distal portion of the sheath is configured to resist sliding over the ventricular lead body so that the atrial bow is formed when a tubular, proximal portion of the sheath is advanced distally relative to the ventricular lead body. The longitudinal distance between the atrial and ventricular electrodes can be adjusted during implantation by withdrawing the sheath proximally relative to the ventricular lead body.

Abstract: A single-pass atrio-ventricular (A-V) pacing lead includes an elongated main lead body having an atrial electrode at the distal end thereof, and includes a ventricular branch which departs from the main lead body just proximal to the tip of the atrial electrode. The ventricular branch has a ventricular electrode at its distal tip. The main lead body includes a preformed "J"-shaped portion which, following proper implantation, projects the atrial electrode against a wall of the atrial appendage. The ventricular branch includes a preformed bend which curves in the opposite direction of the J-shaped portion so as to maintain the ventricular branch generally away from the wall of the atrial appendage. The lead includes a single lumen which extends through both the main lead body and the ventricular branch, allowing the lead to be implanted using a single stylet.