Method and system for attaching a graft to a blood vessel
View Patent ↗Anastomotic stents for connecting a graft vessel to a target vessel, and methods of use thereof. The anastomotic stents of the invention are suitable for use in a variety of anastomosis procedures, including coronary artery bypass grafting. One embodiment of the invention comprises a large vessel anastomotic stent for use with large diameter target vessels such as the aorta or its major side branches. Another embodiment of the invention comprises a small vessel anastomotic stent for use on a target vessel which has a small diameter such as a coronary artery. Another aspect of the invention involves applicators for use with the stents of the invention.
1. An anastomosis tool for connecting a graft vessel to a target vessel, comprising:
a one-piece anastomosis device having a diameter;
a first tube configured to receive said anastomosis device;
a second tube, said first and second tubes movable with respect to one another to deploy said anastomosis device, wherein the diameter of said anastomosis device increases upon deployment; and
a side hole in at least one of said first and second tubes configured to allow the graft vessel to pass out of the side of said tube.
2. The anastomosis tool of claim 1 , wherein said second tube is rotatable with respect to said first tube.
3. The anastomosis tool of claim 1 , wherein said second tube is movable with respect to said first tube to apply torque to said anastomosis device.
4. The anastomosis tool of claim 1 , wherein said second tube is movable with respect to said first tube to apply an axial compressive force to said anastomosis device.
5. The anastomosis tool of claim 1 , wherein said first tube is removably connectable to said anastomosis device.
6. The anastomosis tool of claim 1 , further comprising a handle connected to said first and second tubes with a mechanism for deploying said anastomosis device.
7. The anastomosis tool of claim 1 , wherein said first tube includes a plurality of connecting members at a distal end thereof and said anastomosis device includes a plurality of features arranged to removably connect to said plurality of connecting members.
8. The anastomosis tool of claim 1 , wherein said first tube and said second tube are substantially concentric.
9. A method of performing anastomosis between a graft vessel and a target vessel, the method comprising:
receiving an anastomosis device on an anastomosis device applicator having a substantially rigid vessel penetrating member;
connecting a graft vessel to the anastomosis device on the anastomosis device applicator;
penetrating a target vessel with the vessel penetrating member of the anastomosis device applicator;
advancing the anastomosis device into the penetration in the target vessel;
deploying the anastomosis device with the anastomosis device applicator to connect the graft vessel to the target vessel; and
maintaining the anastomosis device applicator and vessel penetrating member outside of the lumen of the graft vessel during the receiving, connecting, penetrating, advancing and deploying.
10. The method of claim 9 , wherein the step of deploying the anastomosis device is performed by moving two tubes of the anastomosis device applicator with respect to one another to deploy the anastomosis device.
11. The method of claim 9 , wherein the anastomosis device is a one-piece anastomosis device.
12. The method of claim 9 , wherein during the penetrating step the vessel penetrating member is positioned inside the anastomosis device applicator.
13. The method of claim 9 , wherein the step of deploying connects an end of the graft vessel to a side of the target vessel.
14. A method of performing anastomosis between a graft vessel and a target vessel, the method comprising:
providing a one-piece anastomosis device;
receiving said anastomosis device on an anastomosis device applicator including a first tube and a second tube;
connecting a graft vessel to said anastomosis device on the anastomosis device applicator with an end of the graft vessel passing out a side hole of at least one of the first and second tubes; and
deploying said anastomosis device with the anastomosis device applicator to connect the graft vessel to the target vessel, wherein said deploying increases the diameter of said anastomosis device.
15. The method of claim 14 , wherein said deploying said anastomosis device is performed by moving the first and second tubes with respect to one another.
16. The method of claim 14 , wherein said receiving said anastomosis device on the anastomosis device applicator is performed by removably connecting a plurality of features of said anastomosis device to a plurality of connecting members at a distal end of the first tube.