Medical device anchor and delivery system
First Claim
1. A method for deploying a medical device in a body, wherein the medical device includes an elongate hollow leg having an opening proximal to a distal end of the hollow leg, an elongate anchor shaft disposed within the hollow elongate leg, and an anchor at a distal end of the anchor shaft having a tip at a distal end of the anchor and a central anchor portion adjacent to the tip, the method comprising:
- extending the tip of the anchor through the opening of the hollow leg such that the tip of the anchor completely penetrates a body wall from a first surface of the body wall to a position beyond a second surface of the body wall; and
further extending the anchor beyond the second surface such that the central anchor portion is curved to form a closed loop and compress the second surface,wherein, in response to a force applied to the anchor in a proximal direction, a radius of curvature of the closed loop decreases such that the closed loop decreases in diameter.
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Accused Products
Abstract
A method and an apparatus for anchoring a medical implant device within a blood vessel or other body passageway are described herein. An anchor delivery system houses one or more expandable anchors connected to the medical implant device. The anchors remain housed in a non-expanded configuration until the medical implant device has been placed in a desired position within the body, and then the anchors are propelled through a body wall where each anchor expands outwardly from an anchor shaft. In one configuration, each anchor is formed as a compressible closed loop which extends outwardly from an anchor shaft and loops back to cross over and extend beyond the anchor shaft. To propel the anchors, a drive shaft is connected to a triggering unit which, when activated, causes the drive shaft to drive the anchor shafts in a direction such that the anchors are propelled through the body wall.
601 Citations
6 Claims
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1. A method for deploying a medical device in a body, wherein the medical device includes an elongate hollow leg having an opening proximal to a distal end of the hollow leg, an elongate anchor shaft disposed within the hollow elongate leg, and an anchor at a distal end of the anchor shaft having a tip at a distal end of the anchor and a central anchor portion adjacent to the tip, the method comprising:
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extending the tip of the anchor through the opening of the hollow leg such that the tip of the anchor completely penetrates a body wall from a first surface of the body wall to a position beyond a second surface of the body wall; and further extending the anchor beyond the second surface such that the central anchor portion is curved to form a closed loop and compress the second surface, wherein, in response to a force applied to the anchor in a proximal direction, a radius of curvature of the closed loop decreases such that the closed loop decreases in diameter. - View Dependent Claims (2, 3, 4, 5)
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6. A method of anchoring a medical device within a body, comprising:
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positioning a hollow leg of the medical device against a first surface of a body wall; advancing an anchor from within the hollow leg through an opening in a wall of the hollow leg proximal to a distal most end of the hollow leg; passing a distal most portion of the anchor completely through the body wall, wherein the distal most portion of the anchor that has passed completely through the body wall crosses over itself; and compressing an exterior surface of the body wall with the anchor that has passed completely through the body wall, wherein the compression increases as a force is applied to the anchor in a proximal direction.
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Specification