Device and method for positioning an electrode in tissue
First Claim
1. A device configured to position an electrode in tissue in a body, comprising:
- an elongate body having a distal portion, wherein the distal portion of the elongate body includes an atraumatic tip formed from a soft, compressible material which reduces the risk of tissue penetration;
an electrode array coupled to the distal portion of the elongate body;
an anchoring element disposed within the elongate body and having a distal anchor tip, wherein the anchoring element is movable between a first configuration in which the distal anchor tip is substantially retracted within the elongate body, and a second configuration in which the anchoring element extends at least partially from one side of the elongate body, the anchoring element being configured to penetrate and fixate within the tissue adjacent to said one side of the elongate body when in the second configuration; and
a selectively expandable displacement mechanism on a side of the distal portion of the elongate body opposite to said one side and configured to selectively bias both the electrode array and the anchoring element in a direction toward the tissue when the selectively expandable displacement mechanism is expanded on the side of the elongate body opposite to said one side.
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Accused Products
Abstract
A device for positioning an electrode in tissue includes: a lead body having a distal portion; an electrode array coupled to the lead distal portion; an anchoring element having an anchor tip and being operable in a first configuration in which the anchor tip is retracted within the lead and in a second configuration in which the anchor tip is extended outside the lead and configured to fixate within the tissue; and a displacement mechanism that is actuated to bias the electrode array or the anchoring element toward the tissue. A method for positioning an electrode in tissue includes: navigating, to the tissue, a lead with an electrode array, an anchoring element with a distal anchor tip, and a displacement mechanism; biasing the electrode array and anchoring element towards the tissue with the displacement mechanism; and deploying the anchoring element, and verifying fixation of the anchor tip within the tissue.
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Citations
45 Claims
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1. A device configured to position an electrode in tissue in a body, comprising:
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an elongate body having a distal portion, wherein the distal portion of the elongate body includes an atraumatic tip formed from a soft, compressible material which reduces the risk of tissue penetration; an electrode array coupled to the distal portion of the elongate body; an anchoring element disposed within the elongate body and having a distal anchor tip, wherein the anchoring element is movable between a first configuration in which the distal anchor tip is substantially retracted within the elongate body, and a second configuration in which the anchoring element extends at least partially from one side of the elongate body, the anchoring element being configured to penetrate and fixate within the tissue adjacent to said one side of the elongate body when in the second configuration; and a selectively expandable displacement mechanism on a side of the distal portion of the elongate body opposite to said one side and configured to selectively bias both the electrode array and the anchoring element in a direction toward the tissue when the selectively expandable displacement mechanism is expanded on the side of the elongate body opposite to said one side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A device configured to position an electrode in tissue in a body, comprising:
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an elongate tubular body having at least one lumen disposed axially therethrough and a distal portion with a wall that defines at least one aperture on one side thereof; at least one stimulation electrode coupled to the distal portion of the elongate body proximate to the at least one aperture; a plurality of anchoring elements disposed within the elongate body, wherein each of the plurality of anchoring elements has a distal anchor tip and is selectively operable in two configurations; a first configuration wherein each anchoring element is at a first anchoring element position and the distal anchor tip is at least partially uncurled and substantially retracted within the at least one lumen of the elongate body; and a second configuration wherein each anchoring element is at a second anchoring element position and the distal anchor tip at least partially extends through an aperture to form a curled loop configured to penetrate and fixate within the tissue adjacent to said one side of the elongate body; a balloon, coupled at least partially circumferentially around the distal portion of the elongate tubular body on a side opposite to that of the at least one aperture, that is selectively expandable to bias the at least one stimulation electrode and the plurality of anchoring elements toward the tissue when the balloon is expanded on the side opposite to that of the at least one aperture; and an actuator shaft coupled to the anchoring element to actuate the anchoring element between the first and second anchoring element positions, wherein the actuator shaft is slidably mounted in the at least one lumen to axially and selectively displace the anchoring elements to extend the distal anchor tips to curl through the at least one aperture and to retract distal anchor tips to uncurl in the at least one lumen. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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Specification