Lead anchor
First Claim
1. An implantable lead system comprising:
- at least one lead cable; and
at least one lead anchor slidable along at least a portion of the lead cable;
wherein the at least one lead anchor comprises;
a first sleeve;
a second sleeve;
a spring secured at one end to the first sleeve and at the other end to the second sleeve; and
a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotation of the first sleeve relative to the second sleeve causes an inner diameter of the spring to change;
wherein the rotation activates the locking mechanism; and
wherein the spring is configured so the inner diameter of the spring can grip the lead cable.
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Accused Products
Abstract
An anchor is provided for securing an elongated cylindrical member, such as a lead cable, to surrounding tissue. The anchor has a simple design that allows the anchor to be held in place on, e.g., a lead cable, without the need for sutures. In addition, the anchor may be manipulated to allow the anchor to move along the cylindrical member. Manipulation of the anchor is straight-forward, simple, and does not require tools, yet the anchor is reliably held in place, requiring intentional manipulation to be released. The anchor includes two coaxial sleeves holding the ends of a coaxial spring. As one sleeve is rotated in relation to the other, the spring is twisted, causing the inner diameter of the spring to increase or decrease. Once the inner diameter of the spring is increased to the point that is becomes larger than the outer diameter of the cylindrical member it surrounds, the anchor can slide on the cylindrical member. By decreasing the inner diameter of the spring, the spring can grip the cylindrical member, thus securing the anchor in place on the cylindrical member. The anchor includes a locking mechanism for holding the sleeves, and thus the spring, in a certain position or positions.
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Citations
28 Claims
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1. An implantable lead system comprising:
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at least one lead cable; and
at least one lead anchor slidable along at least a portion of the lead cable;
wherein the at least one lead anchor comprises;
a first sleeve;
a second sleeve;
a spring secured at one end to the first sleeve and at the other end to the second sleeve; and
a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotation of the first sleeve relative to the second sleeve causes an inner diameter of the spring to change;
wherein the rotation activates the locking mechanism; and
wherein the spring is configured so the inner diameter of the spring can grip the lead cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable lead system comprising:
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at least one lead cable; and
at least one lead anchor slidable along at least a portion of the lead cable;
wherein the at least one lead anchor comprises;
a first sleeve;
a second sleeve;
a spring secured at one end to the first sleeve and at the other end to the second sleeve; and
a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotation of the first sleeve relative to the second sleeve causes an inner diameter of the spring to change;
wherein the rotation activates the locking mechanism; and
wherein the locking mechanism defines at least one protrusion on the first sleeve and at least one recess on the second sleeve, wherein the rotation of the first sleeve relative to the second sleeve causes the at least one protrusion to settle into the at least one recess. - View Dependent Claims (12)
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13. An implantable lead system comprising:
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at least one lead cable; and
at least one lead anchor slidable along at least a portion of the lead cable;
wherein the at least one lead anchor comprises;
a first sleeve;
a second sleeve;
a spring secured at one end to the first sleeve and at the other end to the second sleeve; and
a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotation of the first sleeve relative to the second sleeve causes an inner diameter of the spring to change;
wherein the rotation activates the locking mechanism; and
wherein the locking mechanism comprises more than one locked position.
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14. An anchor for anchoring an implantable elongated cylindrical member within a body, the anchor comprising:
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a first sleeve;
a second sleeve;
a spring secured at one end to the first sleeve and at the other end to the second sleeve, the spring in a relaxed state having a inner diameter slightly smaller than the outer diameter of the cylindrical member; and
a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotation of the first sleeve relative to the second sleeve causes the inner diameter of the spring to increase, the spring thereby releasing the cylindrical member; and
wherein the rotation activates the locking mechanism, thereby locking the first sleeve and second sleeve in position while the anchor is free to move along the cylindrical member. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of forming an anchor for an implantable elongated cylindrical member, comprising:
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forming a first sleeve coaxial with and slidable along the cylindrical member;
forming a second sleeve coaxial with and slidable along the cylindrical member;
securing one end of a spring to the first sleeve and securing the other end of the spring to the second sleeve; and
providing a locking mechanism to hold the first sleeve and the second sleeve in at least one locked position;
wherein rotating the first sleeve relative to the second sleeve causes an inner diameter of the spring to change;
wherein the rotating causes activation of the locking mechanism; and
wherein the spring is configured so the inner diameter of the spring can grip the cylindrical member. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification