Temporary vascular seal for anastomosis
First Claim
1. Medical device (1,19,26′
- ) for insertion into a blood vessel through an opening in a wall of said vessel, the device comprising;
an elongated flexible sheet material (2,32) having a length dimension (L) and a width dimension (W), the sheet material (2,32) being foldable in the width direction for placing the sheet material into an insertion configuration and the sheet material being unfoldable to assume a sealing configuration inside the blood vessel for contacting the blood vessel wall in a sealing manner, the sheet material in the sealing configuration extending along an open contour, conforming to and partly covering an interior surface of the blood vessel wall;
a gripping element (3,31) on an outer surface of said sheet material;
wherein the flexible sheet material (2,32) in an untensioned state is curled in the width direction, wherein the sheet material folds in the width direction (W) upon exertion of a pulling force on the gripping element (3,31), directed generally in the length direction, and upon contacting of the sheet material by the sides of the opening in the vessel wall after partially closing the opening.
1 Assignment
0 Petitions
Accused Products
Abstract
A temporary intravascular arteriotomy seal for insertion into and retrieval from a blood vessel through an opening in the wall of the vessel. The seal comprises a thin flexible sheet material. According to one embodiment, in an untensioned state, the seal is curved and foldable in the width direction. It is adapted to be folded in the width direction upon exertion for a force on the gripping element directed in the length direction, and upon contacting of the sheet material by the sides of the opening in the vessel wall. By use of the sealing device, arterial by-pass grafting in a briefly-occlusive or non-occlusive end-to-side or side-to-side anastomosis technique is possible with virtually no obstruction to flow, little endothelial denudation and otherwise no wall damage by the intravascular device, and without blocking of side branches. A further embodiment of a device according to the present invention is characterized in that the gripping element is formed by a supply duct which ends in an opening in the flexible sheet material for administration of substances to the supply duct into a blood vessel for rescue arterial perfusion purposes. Optionally, the seal may be inflatable.
298 Citations
30 Claims
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1. Medical device (1,19,26′
- ) for insertion into a blood vessel through an opening in a wall of said vessel, the device comprising;
an elongated flexible sheet material (2,32) having a length dimension (L) and a width dimension (W), the sheet material (2,32) being foldable in the width direction for placing the sheet material into an insertion configuration and the sheet material being unfoldable to assume a sealing configuration inside the blood vessel for contacting the blood vessel wall in a sealing manner, the sheet material in the sealing configuration extending along an open contour, conforming to and partly covering an interior surface of the blood vessel wall;
a gripping element (3,31) on an outer surface of said sheet material;
wherein the flexible sheet material (2,32) in an untensioned state is curled in the width direction, wherein the sheet material folds in the width direction (W) upon exertion of a pulling force on the gripping element (3,31), directed generally in the length direction, and upon contacting of the sheet material by the sides of the opening in the vessel wall after partially closing the opening. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- ) for insertion into a blood vessel through an opening in a wall of said vessel, the device comprising;
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4. Medical device (19) according to claim
wherein the flexible sheet material comprises two membranes (22,23) that are sealingly connected along their perimeter (25) and a supply duct (24) for supply of a fluid into the space between the membranes (22,23).
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24. A temporary seal for an opening in a blood vessel, comprising:
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a sheet of flexible material that has a generally oval peripheral edge with a length greater than a width, said sheet having lateral sides that curl towards one another so that said sheet is part of a cylinder in an untensioned state, a convex outer surface of said sheet being structured and arranged to conform to an interior surface of a blood vessel completely around a periphery of an opening in the blood vessel when the temporary seal is inserted through the opening; and
a gripping element attached to said convex outer surface and that is structured and arranged to withdraw said sheet from the blood vessel when said gripping element is pulled away from the opening. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification