Percutaneous bypass graft and securing system
First Claim
Patent Images
1. A body implantable graft, including:
- a tubular graft wall having opposite first and second open ends, defining a fluid flow lumen between the first and second ends, adapted for a selected placement in body tissue with the first end at a first location in the tissue and the second end at a second location in the tissue, to provide a fluid flow path between the first and second locations to bypass an obstruction between the locations; and
a graft fixation apparatus operable to heat the body tissue at least near the first end following said placement, to thermally secure the graft wall and the tissue adjacent the first end.
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Accused Products
Abstract
A bypass graft incorporates fixation mechanisms at its opposite ends, for securing these ends to different locations along a blood vessel, or alternatively to different locations wherein one of the locations is a different vessel or an organ defining a cavity. Mechanical fixation features such as collets or grommets can be employed, enhanced by delivery of an electrical current sufficient to heat surrounding tissue to form a thermal bond. A graft deployment system includes a tissue dilator and a needle for perforating tissue, mounted coaxially within the dilator. Intralumenal systems further include a catheter for containing the dilator.
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Citations
35 Claims
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1. A body implantable graft, including:
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a tubular graft wall having opposite first and second open ends, defining a fluid flow lumen between the first and second ends, adapted for a selected placement in body tissue with the first end at a first location in the tissue and the second end at a second location in the tissue, to provide a fluid flow path between the first and second locations to bypass an obstruction between the locations; and a graft fixation apparatus operable to heat the body tissue at least near the first end following said placement, to thermally secure the graft wall and the tissue adjacent the first end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 20)
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11. A body implantable graft, including:
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a tubular graft wall having a pocket formed therein and further having opposite first and second open ends, said graft wall defining a fluid flow lumen between the first and second ends, adapted for a selected placement in body tissue with the first end at a first location in the body tissue and the second end at a second location spaced apart from the first location, to provide a fluid flow path between the first and second locations; and a graft fixation apparatus operable to heat the body tissue at least near the first end following said placement, to thermally secure the graft wall and the body tissue adjacent the first end. - View Dependent Claims (12, 13, 16)
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14. The graft of claim 11wherein:
the graft fixation apparatus includes an electrically conductive heating element mounted with respect to the graft wall near the first end. - View Dependent Claims (15)
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21. A body implantable graft including:
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a tubular body defining a lumen and having first and second ends, adapted for placement between at least two regions of a vessel with part of the tubular body residing outside of the vessel; at least one support structure attached to the tubular body near the first end; and a graft fixation apparatus operable to heat the vessel at least near said first end, to thermally secure the tubular body and vessel adjacent the first end. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A thermally securable bypass graft including:
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a tubular body having one end adapted for fluid coupling to the interior of a vessel with a portion of the tubular body extending outside of the vessel; an electrode structure attached to the tubular body; a conductor attached to the electrode structure and adapted to transmit an electrical current to the electrode structure, to heat tissue adjacent the electrode structure and thereby thermally secure the tissue to the tubular body. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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Specification