An electrode lead for the coronary sinus, with a lead body that has a distal section for insertion into the coronary sinus, and at least one electrode to make contact with body tissue, the at least one electrode being arranged on the distal section of the lead body. The electrode lead has a fixation device that can be extended out of the lead body to fix the electrode lead in a blood vessel.

A medical lead includes a lead body, a connector pin proximate to a proximal end of the lead body, a helix extending from a distal end of the lead body, an electrode proximate to the distal end of the lead body, and a cable conductor within the lead body and including an electrode proximate a distal end of the cable conductor, the cable conductor being slideable within the lead body to extend and retract the electrode relative to the distal end of the lead body.

Extraction devices for extracting chronically implanted devices such as leadless cardiac pacemakers (LCP). In some cases, the extraction devices may be configured to cut or tear through at least some of the tissue ingrowth around and/or over the chronically implanted device such that a retrieval feature on the chronically implanted device may be grasped for removal of the chronically implanted device.

Extraction devices for extracting chronically implanted devices such as leadless cardiac pacemakers (LCP). In some cases, the extraction devices may be configured to cut, tear or ablate through at least some of the tissue ingrowth around and/or over the chronically implanted device such that a retrieval feature on the chronically implanted device may be grasped for removal of the chronically implanted device. Implantable medical devices such as LCPs may include features that facilitate their removal.

The invention relates to a cardiac lead extraction system, comprising: a handle; an elongated body in communication with said handle; a bendable flexible portion in communication with said elongated body, said bendable flexible portion comprising a first lumen sized and shaped to fit over a cardiac lead; said bendable flexible portion being more flexible than said elongated body; an operational distal end in communication with said bendable flexible portion; where said bendable portion is configured to bend to a bending radius of less than 4 cm while keeping said first lumen open; and where said operational distal end comprises at least one lead extraction assistive tool, said operational distal end comprising a second lumen sized and shaped to fit over a cardiac lead, said second lumen being in communication with said first lumen, and said first lumen comprises an inner diameter of from about 1 mm to about 5 mm.

Embodiments of the invention are related to leads with topographic surface features and related methods, amongst other things. In an embodiment, the invention includes an implantable lead including a lead body having a proximal end and a distal end, the lead body including an outer layer defining a lumen, the lead body further including a first electrical conductor disposed within the lumen of the outer layer. The implantable lead can further include a first electrode coupled to the lead body, the electrode in electrical communication with the first electrical conductor. The implantable lead can also include a cellular modulation segment on the external surface of the lead body, the cellular modulation segment comprising topographic surface features configured to modulate cellular responses. Other embodiments are also included herein.

A device for extending a lead according to some embodiments includes a body, a tubular member coupled to the body, the tubular member comprising an outer surface, wherein the outer surface is sized to insert into an inner lumen of a lead, the tubular member is movable between a first configuration in which the tubular member slides into the lead, and a second configuration in which at least a portion of the tubular member expands to engage an inner surface of the lead; and, an actuation mechanism operatively coupled to the tubular member, the actuation mechanism configured to move the tubular member between the first configuration and second configuration.

A device for extending a lead according to some embodiments includes a body, a coil element coupled to the body, the body configured to cover the coil element during use, the coil element comprising an inner lumen sized to receive an outer surface of a lead, the coil element is movable between a first configuration in which the coil element slides over the lead, and a second configuration in which at least some coils grip the outer surface of the lead; an actuation mechanism operatively coupled to the coil element, the actuation mechanism configured to move the coil element between the first and second configurations; and a tether coupled to the lead via the body, the coil element, and/or actuation mechanism, the tether configured to extend further proximally than a proximal-most end of the lead and configured to transfer tension force applied to the tether to the lead.

Methods, devices and systems for separating an implanted object, such as a lead attached to a cardiac conduction device, from formed tissue within a blood vessel are provided. The methods, devices and systems for separating a lead from the tissue relate to dilating the tissue surrounding the lead from underneath the tissue and/or between the lead and the tissue.

An extractor for removing an implanted lead from a patient. The extractor includes a lumen dimensioned to receive the lead therein, a cutter at the distal portion for cutting tissue adjacent the lead, a distal clamping structure and a proximal clamping structure The proximal clamping structure and lead are relatively movable to extract the lead.