Implant anchor systems
First Claim
1. A myocardial tissue implant device adapted to be implanted in a human myocardium having a predetermined thickness at an implant site, the implant being configured to resist migration and comprising:
- an elongate flexible body having proximal and distal portions, the proximal portion, prior to implantation, having a larger profile than the distal portion,the flexible body defining an exterior, a hollow interior, and at least one opening between the interior and exterior, and a tail at the proximal portion,the length of the implant being less than said predetermined thickness whereby the implant device may be implanted within the myocardium with at least part of the tail disposed below the external surface of the myocardium and the distal portion being disposed proximally of the innermost surface of the myocardium.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides anchoring mechanisms for tissue implants. The anchors are integrated as part of the structure of the implant and serve to resist migration of the implant from highly dynamic muscle tissue such as the myocardium of the heart. In implant devices configured as a flexible coil, various attributes of the coil may be altered to increase the anchoring capability of the device. The flexibility of the device may be increased to resist migration by changing the coil filament thickness, pitch or filament material. Alternatively, the end coil may be altered to have a broader cross-sectional profile in engagement with the tissue or may include an anchoring barb. Additionally, methods of implanting a tissue implant device are provided.
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Citations
47 Claims
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1. A myocardial tissue implant device adapted to be implanted in a human myocardium having a predetermined thickness at an implant site, the implant being configured to resist migration and comprising:
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an elongate flexible body having proximal and distal portions, the proximal portion, prior to implantation, having a larger profile than the distal portion, the flexible body defining an exterior, a hollow interior, and at least one opening between the interior and exterior, and a tail at the proximal portion, the length of the implant being less than said predetermined thickness whereby the implant device may be implanted within the myocardium with at least part of the tail disposed below the external surface of the myocardium and the distal portion being disposed proximally of the innermost surface of the myocardium. - View Dependent Claims (2, 3, 4, 5)
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6. A myocardial tissue implant device adapted to be implanted in a human myocardium having a predetermined thickness at an implant site, the implant being configured to resist migration comprising:
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an elongate flexible body having proximal and distal portions, the proximal portion, prior to implantation, having a larger profile than the distal portion, a tail at the proximal portion, the length of the implant being less than said predetermined thickness whereby the implant device may be implanted within the myocardium with at least part of the tail disposed below the external surface of the myocardium and the distal portion being disposed proximally of the innermost surface of the myocardium. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of implanting a device in a wall of tissue comprising:
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providing an implantable device having an elongate flexible body with proximal and distal ends and an anchoring tail at the proximal end that defines a larger profile than the distal end of the implant, the length of the implantable device being less than the thickness of the tissue wall whereby the device may be implanted within the wall with at least part of the tail disposed below one surface of the wall and the distal portion of the implant being disposed within the wall and spaced from the opposite surface of the wall; providing an elongate implant delivery device having a sharp tip configured to penetrate tissue and releasably retain the tissue implant device; associating the implantable device with the implant delivery device; accessing the desired tissue implant site; applying a penetrating force to the implant and implant delivery device combination such that the combination penetrates tissue to implant the device within the tissue wall; withdrawing the implant delivery device from the implanted device. - View Dependent Claims (25, 26, 27)
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28. A method of implanting a tissue implant device to promote angiogenesis within a tissue comprising:
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providing an implantable device configured to be anchored within tissue so that it does not migrate from the tissue after implantation comprising an elongate flexible body having proximal and distal portions each defining a profile, the proximal portion having a larger profile than the distal portion and a tail, inserting the distal portion of the device into the tissue and advancing the device to embed the device in the tissue with the distal end of the device covered by the tissue and the tail at the proximal portion being embedded below the tissue surface. - View Dependent Claims (29, 30, 31)
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32. A method of anchoring a tissue implant device within tissue comprising:
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providing an implantable body having a proximal portion and a distal portion each defining a profile and wherein the profile of the proximal portion is larger than that of the distal portion and the proximal portion comprises a tail; providing a delivery device configured to carry the implantable body to an intended tissue location and implanting the device in tissue; associating the body with the delivery device and implanting the body in tissue at the intended location to a depth so that the tail is embedded below the tissue surface and the distal end of the device is enclosed within tissue; applying a surgical adhesive at the site of the implant to secure the body to the tissue. - View Dependent Claims (33, 34)
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35. A method of implanting an implant device configured to resist migration in tissue comprising:
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providing a flexible spring body implant device having proximal and distal portions, the proximal portion, prior to implantation, having a larger profile than the distal portion, the implant device having sufficient longitudinal flexibility to absorb migratory forces applied on the device by surrounding tissue after implantation; inserting the flexible spring body into tissue to a depth such that the distal portion is enclosed by the tissue.
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36. A myocardial tissue implant device adapted to be implanted, at an implant site, in a human myocardium comprising:
an elongate flexible body having proximal and distal portions, the proximal portions, prior to implantation, having a larger profile than the distal portion, wherein the flexible body comprises a helical spring and a tail at the proximal portion, the length of the implant being less than the wall thickness of the myocardium at the implant site whereby the implant may be embedded in the myocardium at the implant site with the tail in engagement with the outer surface of the myocardium and the distal portion being fully enclosed by the myocardium. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
Specification