Method of sutureless closure for connecting blood vessels
First Claim
1. A method of performing anastomosis, comprising:
- providing a one-piece tubular anastomosis device;
everting an end of a graft vessel about an end of the anastomosis device;
puncturing a target vessel;
inserting the anastomosis device with everted graft vessel into the puncture in the target vessel;
radially expanding the anastomosis device by advancing an expander into the anastomosis device to cause a portion of the anastomosis device to deform outward forming a first annular flange; and
forming a second annular flange on the anastomosis device to trap a wall of the target vessel between the first and second annular flanges and seal the graft vessel to the target vessel.
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Accused Products
Abstract
An anastomosis device is a one piece device for connecting a graft vessel to a target vessel without the use of conventional sutures. The anastomosis device includes an expandable tube configured to have a graft vessel secured to the tube. The device has an expandable linkage positioned at one end of the device and expansion of this linkage causes a first radially extending flange to fold outward. This first flange abuts an interior wall of a target vessel and a second flange is formed which abuts an exterior wall of the target vessel trapping the target vessel between the two flanges and secures the end of the graft vessel into an opening in the wall of the target vessel. The device greatly increases the speed with which anastomosis can be performed over known suturing methods and allows anastomosis to be performed in tight spaces.
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Citations
11 Claims
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1. A method of performing anastomosis, comprising:
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providing a one-piece tubular anastomosis device;
everting an end of a graft vessel about an end of the anastomosis device;
puncturing a target vessel;
inserting the anastomosis device with everted graft vessel into the puncture in the target vessel;
radially expanding the anastomosis device by advancing an expander into the anastomosis device to cause a portion of the anastomosis device to deform outward forming a first annular flange; and
forming a second annular flange on the anastomosis device to trap a wall of the target vessel between the first and second annular flanges and seal the graft vessel to the target vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of performing anastomosis, comprising
providing a one-piece tubular expandable anastomosis device; -
everting the end of a graft vessel about an end of the anastomosis device;
creating an opening in a target vessel;
inserting the anastomosis device with the everted graft vessel into the opening in the target vessel; and
radially expanding the tubular anastomosis device to support tissue surrounding the opening in the target vessel by longitudinally moving an expander relative to the anastomosis device.
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9. A method of forming an anastomosis, comprising:
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everting one end of a graft vessel about an end of a joining device;
inserting the joining device with the everted first vessel through a wall of a second vessel, said wall having an interior wall surface and an exterior wall surface;
radially expanding the joining device inside the second vessel by advancing an expander into the anastomosis device to form a first protuberance;
seating the first protuberance against the interior wall surface of the second vessel; and
forming a second protuberance in the joining device to thereby retain the wall of the second vessel between the first and second protuberances. - View Dependent Claims (10, 11)
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Specification