Abstract:
An implantable medical therapy delivery device includes a non-conductive filament extending along a length of an outer surface of an insulative body of the device, wherein the filament includes a plurality of fixation projections and is secured to the outer surface of the insulative body such that the projections protrude outward from the outer surface and are spaced apart from one another along the length of the outer surface. The filament may be wound about the length with an open pitch. In some cases, the insulative body includes an open-work member forming at least a portion of the outer surface thereof, and the filament may be interlaced with the open-work member. In these cases, the filament may be bioabsorbable, for example, to provide only acute fixation via the projections thereof, while the open-work member provides a structure for tissue ingrowth and, thus, more permanent or chronic fixation.
Abstract:
Implant tools and techniques for implantation of a medical lead, catheter or other implantable component are provided. The implant tools and techniques are particularly useful in implanting medical electrical leads in extravascular locations, including subcutaneous locations. An example implant tool for implanting a medical lead includes a rod and a sheath configured to be placed on the rod. The rod includes a handle, a shaft having a proximal end adjacent to the handle and a distal end, and an attachment feature toward the distal end of the shaft, the attachment feature configured to couple to the medical lead. The sheath is configured to be placed in multiple positions along the rod including a first position in which the sheath does not interact with the attachment feature and second position in which the sheath does interact with the attachment feature.
Abstract:
This disclosure provides various embodiments of implant tools and implant techniques utilizing those tools. In one embodiment, an implant tool comprises a handle and a shaft. The shaft includes a proximal end adjacent the handle, a distal end, an open channel that extends from near the proximal end to the distal end, and at least one lumen that extends from a proximal end of the shaft to a location near the distal end of the shaft. The implant tool may also include a coupler configured to connect to a fluid delivery device. In one example, the fluid delivery device may be a syringe. In some instances, the handle of the implant tool may include a compartment or a recess configured to receive the fluid delivery device.
Abstract:
This disclosure provides various embodiments of implant tools and implant techniques utilizing those tools to implant components within extravascular locations. In one example, an implant tool for implanting a component within an extravascular location of a patient comprise a handle and a shaft adjacent the handle. The shaft has a proximal end, a distal end, and a body formed to define an open channel that extends from near the proximal end to the distal end. The open channel has a first width. The body has at least one flexible portion that defines an opening via which the open channel is accessed. The opening has a second width that is less than the first width. In another example, a sheath with an opening having the second width may be placed on the shaft of the implant tool instead of the implant tool having the at least one flexible portion.
Abstract:
An implantable medical electrical lead having an elongate lead body having a proximal end and a distal portion. A plurality of defibrillation electrodes coupled to the distal portion is included, the plurality of electrodes being transitionable from a first configuration in which the defibrillation electrodes are biased in an expanded configuration to a second configuration in which the defibrillation electrodes are in a collapsed configuration. A joint slideably disposed around a portion of the lead body is included, at least a portion of the plurality of defibrillation electrodes being coupled to the joint
Abstract:
This disclosure describes an implantable medical electrical lead and an ICD system utilizing the lead. The lead includes a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration. The lead includes a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration spaced apart from one another by a distance. The lead also includes at least one electrode disposed between adjacent sections of the plurality of defibrillation sections. The at least one electrode is configured to deliver a pacing pulse to the heart and/or sense cardiac electrical activity of the heart.