Implantable medical device with captivation fixation
First Claim
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1. An implantable intramuscular lead system comprising:
- at least one elongate lead for at least partially implanting in tissue, the lead having a length, and opposite ends;
a first anchor preattached to the lead; and
a second anchor mounted on the lead for movement along the length of the lead relative to the first anchor to capture the tissue between the anchors so that the lead is retained in position, a portion of the second anchor comprising a surface configured to abut the tissue, wherein the surface is oriented at an angle with respect to a center axis of the second anchor,wherein the surface tapers from a distal outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion of the second anchor, wherein the second anchor is mounted on the lead such that the proximal outer perimeter of the portion of the second anchor is located along the lead between the first anchor and the distal outer perimeter of the portion of the second anchor.
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Abstract
An implantable intramuscular lead system, such as for use as a gastric lead, and method of use in which electrodes along the lead are imbedded in tissue. First and second anchors are mounted on an elongate lead. At least the second anchor is movable along the length of the lead relative to the first anchor to capture the tissue between the anchors so that the lead is retained in position. The system facilitates implantation of the lead in tissue, and may be particularly suited for minimally invasive implantation, such as laparoscopically.
102 Citations
59 Claims
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1. An implantable intramuscular lead system comprising:
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at least one elongate lead for at least partially implanting in tissue, the lead having a length, and opposite ends; a first anchor preattached to the lead; and a second anchor mounted on the lead for movement along the length of the lead relative to the first anchor to capture the tissue between the anchors so that the lead is retained in position, a portion of the second anchor comprising a surface configured to abut the tissue, wherein the surface is oriented at an angle with respect to a center axis of the second anchor, wherein the surface tapers from a distal outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion of the second anchor, wherein the second anchor is mounted on the lead such that the proximal outer perimeter of the portion of the second anchor is located along the lead between the first anchor and the distal outer perimeter of the portion of the second anchor. - 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)
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28. An implantable therapy delivery system, comprising:
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an implantable therapy delivery device; at least one elongate therapy delivery element for at partial implantation in tissue and coupled to the implantable therapy delivery device, the therapy delivery element having a length and opposite ends; a first anchor preattached to the therapy delivery element; and a second anchor mounted on the therapy delivery element for along the length of the therapy delivery element relative to the first anchor to capture the tissue between the anchors so that the therapy delivery element is retained in position for delivery of a therapy, a portion of the second anchor comprising a surface configured to abut the tissue, wherein the surface is oriented at an angle with respect to a center axis of the second anchor, wherein the surface tapers from a distal outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A method of implanting a therapy delivery system, comprising the following steps:
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providing an elongate therapy delivery element having a length and opposite ends, a first anchor preattached to the therapy delivery element; and
a second anchor mounted on the therapy delivery element for movement along the length of the therapy delivery element relative to the first anchor;introducing therapy delivery element through tissue so that the first anchor engages the tissue; advancing the second anchor along the therapy delivery element to capture the tissue between the first and second anchors, thereby retaining the therapy delivery element in position for delivery of a therapy, a portion of the second anchor comprising a oriented at an angle with respect to a center axis of the second anchor, the surface tapering from a distal outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion; and coupling and implanting an implaritable therapy delivery device to the therapy delivery element. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A method of implanting an implantable medical lead, comprising the following steps:
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providing an elongate medical lead having a length and opposite ends, a first anchor preattached to the lead, and a second anchor mounted on the lead for movement along the length of the lead relative to the first anchor; introducing the lead through tissue so that the first anchor engages the tissue; advancing the second anchor along the lead to capture the tissue between the first and second anchors, thereby retaining the lead in position for delivery of a therapy, wherein a portion of the second anchor comprises a surface configured to abut the tissue, the surface being angled with respect to a center axis of the second anchor, and the surface tapering from a distal, outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion; and coupling an implantable pulse generator to the lead. - View Dependent Claims (43, 44, 45, 46, 47)
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48. A method of implanting an implantable gastric lead in gastric tissue, comprising the following steps:
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providing an elongate medical lead having a length and opposite ends, a first anchor preattached to the lead; and
a second anchor mounted on the lead for movement along the length of the lead relative to the first anchor, a portion of the second anchor comprising a surface configured to abut the gastric tissue, wherein the surface is oriented at an angle with respect to a center axis of the second anchor, and wherein the surface tapers from a distal outer perimeter of the portion of the second anchor to a narrower proximal outer perimeter of the portion;introducing the lead through gastric tissue so that the first anchor engages the gastric tissue; and advancing the second anchor along the lead to capture the gastric tissue between the first and second anchors, thereby retaining the lead in position for delivery of a therapy or sensing of gastric activity. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56)
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57. An implantable intramuscular lead system comprising:
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at least one elongate lead having a length extending between opposite ends; a first anchor mounted on the lead; a second anchor mounted on the lead for movement along the length of the lead relative to the first anchor to capture the tissue between the anchors so that the lead is retained in position, wherein the second anchor defines a groove; and a crimping band positioned in the groove of the second anchor. - View Dependent Claims (58, 59)
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Specification