Anastomosis devices, tools and methods of performing sutureless anastomosis. Anastomosis devices are provided for fixing a first conduit to a second conduit in an anastomosis, where the conduits are joined by interfacing their inner walls together. The conduit which is loaded on the anastomosis devi
Anastomosis devices, tools and methods of performing sutureless anastomosis. Anastomosis devices are provided for fixing a first conduit to a second conduit in an anastomosis, where the conduits are joined by interfacing their inner walls together. The conduit which is loaded on the anastomosis device may be mounted in such a way that the internal wall of the conduit does not make contact with the anastomosis device.
대표청구항▼
The invention claimed is: 1. A method of performing an anastomosis to join a graft to a target vessel, said method comprising the steps of: measuring an outside diameter and wall thickness of the graft vessel; selecting an appropriately sized anastomosis device, based on the outside diameter and wa
The invention claimed is: 1. A method of performing an anastomosis to join a graft to a target vessel, said method comprising the steps of: measuring an outside diameter and wall thickness of the graft vessel; selecting an appropriately sized anastomosis device, based on the outside diameter and wall thickness measurements; loading the graft vessel on the anastomosis device so that the graft vessel passes through a longitudinally extending annular space defined by a main body of the anastomosis device, extends beyond a distal end of the anastomosis device and is everted back over an external surface of the distal end of the anastomosis device; selecting a punch appropriately size matched to the outside diameter and wall thickness measurements and punching an opening through a wall of the target vessel; inserting the loaded graft into the opening, wherein the anastomosis device has an enlarged proximal end that is incapable of passing through the opening and abuts against the wall of the target vessel upon inserting the loaded graft; buckling the anastomosis device so that a distal end portion thereof increases in diameter and compresses the everted end of the graft vessel against an internal wall surface of the target vessel. 2. The method of claim 1, wherein the graft vessel has a second free end. 3. The method of claim 1, wherein a second end of the graft vessel is in fluid communication with another vessel or organ. 4. A method of performing an anastomosis to join a first conduit to a second conduit, said method comprising the steps of: inserting a free end of the first conduit through an annular space defined by an anastomosis device so that the free end extends beyond a second end of the device, and wherein at least one first end member of the device extends further radially outward than a radial extent of the main body of the device defining the annular space; everting the extending free end of the graft over the second end of the device, wherein the inner wall of the graft remains free from contact with the device; forming an opening through a wall of the second conduit, wherein the opening is dimensioned to allow the everted end and main body, but not the at least one first end member to pass therethrough; inserting the device and a portion of the first conduit into the opening until the at least one first end member abuts the external wall of the second conduit; and compressing the device to buckle the second end portion, wherein the second end portion, upon buckling is no longer capable of passing back through the opening. 5. The method of claim 4, wherein said compressing is performed only up until a pre-defined compression force has been reached. 6. The method of claim 4, further comprising locking the relative positions of first and second end portions of the device after completion of said compressing. 7. The method of claim 4, wherein said compressing the device to buckle the second end portion further everts the first conduit and draws the everted inner wall of the first conduit against an inner wall of the second conduit. 8. The method of claim 4, wherein said first and second conduits are joined by contact between inner wall surfaces of said first and second conduits, free of any contact with the device. 9. A method of performing an anastomosis to join a first conduit to a second conduit, said method comprising: providing a tool for deployment of and having mounted thereon an anastomosis device, a free end of the first conduit having been inserted through an annular space defined by the anastomosis device and everted over the anastomosis device; forming an opening through a wall of the second conduit; inserting the device and an everted portion of the first conduit into the opening; compressing the device to buckle a distal end portion of the device, wherein upon buckling the distal end portion, the device is no longer capable of being retracted through the opening; and further compressing the device to buckle a portion proximal of the distal end portion, wherein the portion proximal of the distal end portion in a buckle state does not substantially increase in outside diameter relative to a pre-buckled state of the portion proximal of the distal end portion. 10. The method of claim 9, wherein said compressing is performed only up until a pre-defined compression force has been reached. 11. The method of claim 9, further comprising locking the device in the buckled configuration. 12. The method of claim 9, wherein said compressing the device to buckle the device further everts the first conduit and draws the everted inner wall of the first conduit against an inner wall of the second conduit. 13. The method of claim 9, wherein said first and second conduits are joined by contact between inner wall surfaces of said first and second conduits, free of any contact with the device. 14. The method of claim 1, further comprising buckling a portion of the anastomosis device proximal of the distal end portion, so that the portion of the anastomosis device proximal of the distal end portion does not substantially increase in diameter. 15. The method of claim 14, wherein said buckling a portion of the anastomosis device proximal of the distal end portion is performed subsequent to said buckling the anastomosis device so that a distal end portion thereof increases in diameter. 16. The method of claim 4, further comprising buckling a portion of the device between the second end portion and the first end member in a manner wherein the portion between the second end portion and the first end member does not substantially increase in diameter. 17. The method of claim 4, further comprising buckling a portion of the device between the second end portion and the first end member, wherein the portion between the second end portion and the first end member is buckled in directions perpendicular to directions of buckling of the second end portion that occur during said compressing the device to buckle the second end portion. 18. The method of claim 17, wherein said buckling a portion of the device between the second end portion and the first end member is performed subsequent to buckling of the second end portion. 19. The method of claim 17, wherein said compressing the device to buckle a portion proximal of the distal end portion is preformed subsequent to said compressing the device to buckle a distal end portion of the device.
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