Systems and methods for extracting an electrode lead
AssigneeMainstay Medical Limited
InventorsMichael Dahl, Jason Skubitz
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Abstract
Systems and methods are provided for extracting an implanted lead from a patient's body. The system may include a dilator and a trephine for extracting the electrode lead. A sheath may be included that is advanced over the proximal end of an electrode lead until the distal end of the sheath abuts a collar of the electrode lead coupled to proximal fixation elements. The dilator may be rotatably and axially advanced over the sheath until the distal end of the dilator collapses the proximal fixation elements within a lumen of the dilator. The trephine may then be rotatably and axially advanced over the dilator such that a cutting edge of the trephine cuts tissue surrounding distal fixation elements of the electrode lead to thereby dislodge the electrode lead.
Claims26
A system for extracting an electrode lead comprising an implanted fixation element, the system comprising:
- an electrode lead comprising a fixation element configured to anchor the electrode lead in or adjacent to tissue associated with one or more spine stabilizing muscles associated with local segmental control of a lumbar spine within a back of a patient;
- a dilator having a lumen sized and shaped to receive a proximal end of the electrode lead therethrough such that the dilator is slideable along the electrode lead, a distal portion of the dilator configured to be advanced distally to separate tissue surrounding the electrode lead;
- and
- a trephine having a lumen sized and shaped to receive a proximal end of the dilator therethrough, a distal portion of the trephine comprising a cutting edge configured to be advanced distally to cut tissue surrounding the fixation element to thereby dislodge the electrode lead.
A method for extracting an electrode lead comprising a fixation element implanted in a patient's body, the method comprising:
- advancing a dilator distally over a proximal end of the electrode lead to thereby separate tissue surrounding the electrode lead;
- advancing a trephine distally over a proximal end of the dilator, such that a cutting edge at a distal portion of the trephine cuts tissue surrounding the fixation element to thereby dislodge the electrode lead;
- and
- removing the electrode lead from the patient's body.
A system for extracting an electrode lead comprising an implanted fixation element, the system comprising:
- a dilator having a lumen sized and shaped to receive a proximal end of the electrode lead therethrough such that the dilator is slideable along the electrode lead, a distal portion of the dilator configured to be advanced distally to separate tissue surrounding the electrode lead, wherein the distal portion of the dilator is configured to be advanced distally to collapse proximal fixation elements of the fixation element within the lumen of the dilator;
- and
- a trephine having a lumen sized and shaped to receive a proximal end of the dilator therethrough, a distal portion of the trephine comprising a cutting edge configured to be advanced distally to cut tissue surrounding distal fixation elements of the fixation element to thereby dislodge the electrode lead;
- and
- a sheath having a lumen sized and shaped to receive a proximal end of the electrode lead therethrough such that the sheath is slideable along the electrode lead, a distal portion of the sheath configured to be advanced distally until it abuts a collar on the electrode lead that is coupled to the proximal fixation elements, thereby preventing further distal advancement of the sheath relative to the electrode lead,
- wherein the lumen of the dilator is sized and shaped to receive a proximal end of the sheath therethrough such that the dilator is slideable along the sheath.
Dependencies are inferred from the claim text.