Temporary seal and method for facilitating anastomosis
First Claim
1. A temporary sealing element for forming a fluid-tight seal on the inner wall of a fluid conduit within a patient'"'"'s body, the temporary sealing element comprising:
- a length of flexible, resilient material integrally forming a stem, and being helically wound to form successive convolutes outwardly from the stem to the periphery, with each convolute adhering to adjacent convolutes along lateral edges thereof to form a fluid impervious flange having the stem centrally formed thereon and including a continuous region of diminished shear strength between adherent convolutes extending from the stem along a continuous path to the periphery for selectively reconfiguring the flange in response to tension applied to the stem to dissemble the flange along the continuous region into a continuous strand;
a support structure attached to the stem and including a resilient member disposed to expand from a confined configuration of smaller lateral dimension than the periphery of the flange to an expanded configuration of larger lateral dimension than the periphery of the flange; and
a flexible tether forming the attachment of the stem to mating ends of the resilient member for supporting the stem and attached flange intermediate the mating ends of the resilient member.
3 Assignments
0 Petitions
Accused Products
Abstract
Forming a proximal anastomosis on an aortic wall includes method and instrumentation and apparatus for forming an aortic puncture and inserting a fluid-impervious sealing element with a lateral flange and central stem into the vessel through the puncture. An anastomosis of a graft vessel over the puncture is partially completed with the central stem of the sealing element protruding through the partial anastomosis. A removal instrument attaches to the central stem and retrieves the sealing element that disassembles in helical disassociation of the flange and stem into a continuous strand that is withdrawn from the partial anastomosis prior to completion of the procedure.
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Citations
6 Claims
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1. A temporary sealing element for forming a fluid-tight seal on the inner wall of a fluid conduit within a patient'"'"'s body, the temporary sealing element comprising:
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a length of flexible, resilient material integrally forming a stem, and being helically wound to form successive convolutes outwardly from the stem to the periphery, with each convolute adhering to adjacent convolutes along lateral edges thereof to form a fluid impervious flange having the stem centrally formed thereon and including a continuous region of diminished shear strength between adherent convolutes extending from the stem along a continuous path to the periphery for selectively reconfiguring the flange in response to tension applied to the stem to dissemble the flange along the continuous region into a continuous strand; a support structure attached to the stem and including a resilient member disposed to expand from a confined configuration of smaller lateral dimension than the periphery of the flange to an expanded configuration of larger lateral dimension than the periphery of the flange; and a flexible tether forming the attachment of the stem to mating ends of the resilient member for supporting the stem and attached flange intermediate the mating ends of the resilient member. - View Dependent Claims (2, 3)
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4. A kit of surgical components for anastomosing a graft vessel on a fluid-carrying vessel using a temporary sealing element for forming a fluid-fight seal on the inner wall of a fluid conduit within a patient'"'"'s body, the kit comprising:
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a length of flexible, resilient material integrally forming a stem, and being helically wound to form successive convolutes outwardly from the stem to the periphery, with each convolute adhering to adjacent convolutes along lateral edges thereof to form a fluid impervious flange having the stem centrally formed thereon and including a continuous region of diminished shear strength between adherent convolutes extending from the stem along a continuous path to the periphery for selectively reconfiguring the flange in response to tension applied to the stem to dissemble the flange along the continuous region into a continuous strand; a support structure attached to the stem and including a resilient member disposed to expand from a confined configuration of smaller lateral dimension than the periphery of the flange to an expanded configuration of larger lateral dimension than the periphery of the flange; a flexible tether forming the attachment of the stem to mating ends of the resilient member for supporting the stem and attached flange intermediate the mating ends of the resilient member; a punch for forming an aperture in a fluid-carrying vessel; and an insertion instrument having an internal bore for incorporating therein the sealing element and support structure in confined orientation for inserting the sealing element through an aperture formable in a fluid-carrying vessel by the punch, the support structure being resiliently expandable out of the insertion instrument and outside the fluid-carrying vessel. - View Dependent Claims (5, 6)
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Specification