Hydraulic actuation of lead fixation member
First Claim
Patent Images
1. A medical electrical lead comprising:
- a lead body including a proximal portion and a distal portion and a primary lumen extending there between, the primary lumen adapted to receive a guiding member;
at least one electrical conductor extending within the lead body;
at least one electrode located on the lead body and operatively coupled to the at least one conductor;
at least one hydraulic lumen having an inner wall formed in an outer sheath of the lead body, the at least one hydraulic lumen adapted to receive and contain a fluid;
at least one plunger slideably disposed within the at least one hydraulic lumen adapted to receive and contain a fluid, wherein the plunger is moveable in a distal direction from a first position to a second position when hydraulic pressure is introduced into the lumen, the plunger comprising a plunger head in sealing contact with the inner wall of the at least one hydraulic lumen forming a circumferential seal facilitating hydraulic pressure build-up in the at least one hydraulic lumen; and
at least one fixation portion along the lead body including at least one preformed fixation member having an expanded configuration and a collapsed configuration, the fixation member including a proximal end attached to an outer surface of the at least one fixation portion and a distal end attached to the plunger, wherein when the plunger is in the first position, the fixation member is in the expanded configuration.
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Accused Products
Abstract
A medical electrical lead includes a primary lumen, a hydraulic lumen, and a fixation portion including at least one expandable fixation member. The fixation member communicates with a plunger disposed in the hydraulic lumen, and is actuated from an expanded configuration to a collapsed configuration by the introduction and release of hydraulic pressure in the hydraulic lumen. The hydraulic actuation of the fixation member allows for the delivery, positioning, re-positioning, and/or retrieval of the lead.
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Citations
20 Claims
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1. A medical electrical lead comprising:
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a lead body including a proximal portion and a distal portion and a primary lumen extending there between, the primary lumen adapted to receive a guiding member; at least one electrical conductor extending within the lead body; at least one electrode located on the lead body and operatively coupled to the at least one conductor; at least one hydraulic lumen having an inner wall formed in an outer sheath of the lead body, the at least one hydraulic lumen adapted to receive and contain a fluid; at least one plunger slideably disposed within the at least one hydraulic lumen adapted to receive and contain a fluid, wherein the plunger is moveable in a distal direction from a first position to a second position when hydraulic pressure is introduced into the lumen, the plunger comprising a plunger head in sealing contact with the inner wall of the at least one hydraulic lumen forming a circumferential seal facilitating hydraulic pressure build-up in the at least one hydraulic lumen; and at least one fixation portion along the lead body including at least one preformed fixation member having an expanded configuration and a collapsed configuration, the fixation member including a proximal end attached to an outer surface of the at least one fixation portion and a distal end attached to the plunger, wherein when the plunger is in the first position, the fixation member is in the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A medical electrical lead comprising:
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a lead body, the lead body including an actuation lumen having an inner wall; at least one electrical conductor extending within the lead body; at least one electrode located on the lead body and operatively coupled to the at least one conductor; a plunger slideably disposed in the actuation lumen and moveable between a first position and a second position, the plunger in sealing contact with the inner wall forming a circumferential seal such that the actuation lumen is adapted to receive and contain a fluid; and a fixation member having a first end attached to the lead body and a second end attached to the plunger. - View Dependent Claims (13, 14, 15, 16)
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17. A method of deploying a medical electrical lead to a location within a vessel:
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introducing fluid into a lumen having an inner wall formed within a lead body including at least one conductor extending therein and at least one electrode located on the lead body and operatively coupled to the at least one conductor; actuating at least one plunger slideably disposed in the lumen and in sealing contact with the inner wall of the lumen forming a circumferential seal facilitating pressure build-up in the at least one lumen; collapsing at least one fixation member located on a fixation portion of the lead body having a first end coupled to the lead body and a second end coupled to the plunger; guiding a distal end of the lead body through a patient'"'"'s vasculature to a target location within the patient'"'"'s heart; releasing fluid from the lumen; and expanding the fixation member to secure the distal end of the lead body at the target location. - View Dependent Claims (18, 19)
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20. A method of deploying a medical electrical lead including at least one conductor extending within a lead body and operatively coupled to at least one electrode located on the lead body to a location within a vessel, the method comprising introducing fluid into a lumen having an inner wall formed in a lead body and actuating a fixation member having a first end fixed to an outer surface of the lead body and a second end coupled to a plunger slideably disposed within the lumen and in sealing contact with the inner wall of the lumen forming a circumferential seal facilitating pressure build-up in the lumen.
Specification