Everter and threadthrough system for attaching graft vessel to anastomosis device
View Patent ↗An everter and threadthrough system useful for attaching a graft vessel to a anastomosis device which can be used to attach a graft vessel to a target vessel without the use of conventional sutures. The threadthrough system engages an end of the graft vessel and pulls the graft vessel through a deployment tool until a portion of the graft vessel extends beyond a distal end of the anastomosis device mounted on the deployment tool. The everter includes a spreading mechanism which expands the end of the graft vessel and folds the expanded end over the anastomosis device. In the case where the anastomosis device includes barbs, the everter can effect penetration of the graft vessel by the barbs. Once the graft vessel is everted over the anastomosis device, the deployment tool can be used to attach the graft vessel to a target vessel.
1. A tool configured to evert an end of a graft vessel over an end of an anastomosis device, the tool comprising: an everter configured to engage the end of the graft vessel, said everter expandable both radially and axially from a first configuration to a second configuration to expand the graft vessel for eversion over the end of the anastomosis device.
2. A tool configured to evert an end of a graft vessel over an end of an anastomosis device, the tool comprising: an everter configured to engage the end of the graft vessel, said everter expandable from a substantially conical shape to a substantially cylindrical shape to expand the graft vessel for eversion over the end of the anastomosis device.
3. A system for use in preparing a graft vessel for anastomosis to a target vessel, comprising:
a deployment tool having a bore therethrough;
at anastomosis device connected to said deployment tool; and
a pull-through tool comprising at least one tension element slidable at least partially through said bore and said anastomosis device.
4. The system of claim 3 , wherein at least one said tension element is a wire.
5. The system of claim 3 , wherein said pull-through tool is substantially flexible.
6. The system of claim 3 , wherein the distal end of at least one said tension element is bent.
7. The system of claim 3 , wherein said pull-through tool is configured to contact an outer surface of the graft vessel.
8. The system of claim 3 , further comprising a protective sleeve adjacent to said anastomosis device.
9. The system of claim 8 , wherein said protective sleeve is split table.
10. The system of claim 8 , wherein said protective sleeve has a lumen therethrough, said lumen sized substantially the same as the circumference of said anastomosis device.
11. The system of claim 8 , wherein said protective sleeve is moveable along said deployment tube.
12. The system of claim 8 , wherein said protective sleeve is detachably connected to at least a portion of said anastomosis device.
13. The system of claim 8 , further comprising a poke-through tool moveable relative to said protective sleeve.
14. The system of claim 13 , wherein said poke-through tool is adapted to urge said protective sleeve in a proximal direction.
15. The system of claim 13 , wherein at least a portion of said poke-through tool slides over at least a portion of said protective sleeve.
16. The system of claim 3 , further comprising a poke-through tool moveable relative to said protective sleeve.
17. The system of claim 16 , wherein said poke-through tool comprises a housing and a membrane connected to said housing.
18. The system of claim 16 , wherein said poke-through tool comprises an instrument adapted to cause a portion of said anastomosis device to penetrate said graft vessel.