Systems for forming an anastomosis with an anvil and an apparatus having at least one guide
Compression plate apparatus enables vessels to be joined together in various anastomosis configurations. The compression plates are guided to each other in a parallel orientation by guides. The compression plate apparatus may be utilized with an intraluminally directed anvil apparatus or an externally positioned anvil apparatus. One of the compression plates assists in the eversion of the anastomosis fenestra contour. One of the compression plates enables a graft vessel to be pre-everted so that the anastomosis fenestra contours are everted. The apparatus provides a structure that enables the vessels to be joined without being penetrated.
1. A compression plate anastomosis system, comprising:
an anvil apparatus comprising
an anvil comprising a landing between an engaging end and a terminal end, and
an anvil pull extending from the engaging end of the anvil;
a compression plate apparatus comprising
a first compression plate comprising a first ring and a first plurality of holding tabs extending from the first ring, wherein said first plurality of holding tabs defines a first compression plate opening; and
a second compression plate having a second compression plate opening; and
at least one guide fixedly extending from one of the compression plates,
wherein the guide is retained in a friction fit engagement in a respective hole in the other plate such that the first and second compression plates are spaced apart in an initial position opposite from each other and such that the guide and the respective hole cannot inadvertently slide with respect to each other, and
wherein the guide and the corresponding hole permit the first compression plate and the second compression plate to be driven together from the initial position, in a fixed parallel orientation relative to each other until the first compression plate and the second compression plate are in a compressed position with a friction fit engagement between the guide and the respective hole that prevents the plates from separating while remaining in the body, and
wherein the engaging end and the landing of the anvil are sized for movement within the first compression plate opening in a manner that permits a part of a wall of a first vessel at an anastomosis site to be held between the landing of the anvil and the first compression plate without penetration of the held part and with sufficient force to prevent movement of the held part as the first compression plate and the second compression plate are driven together by overcoming the frictional resistance between the at least one guide and the respective hole.
2. The system as recited in claim 1 , wherein the at least one guide comprises a plurality of guides fixedly extending from one compression plate and wherein the other compression plate has a corresponding plurality of holes.
3. The system as recited in claim 1 , wherein the engaging end of the anvil is flat.
4. The system as recited in claim 1 , wherein the engaging end of the anvil is convex.
5. The system as recited in claim 1 , wherein the landing of the anvil is a cylindrical.
6. The system as recited in claim 1 , wherein the first compression plate opening and the second compression plate opening are generally circular.
7. The system as recited in claim 1 , wherein the first compression plate opening and the second compression plate opening are noncircular.
8. The system as recited in claim 1 , wherein the second compression plate comprises a second ring and a second plurality of holding tabs extending from the second ring, wherein the plurality of holding tabs define the second compression plate opening.
9. The system as recited in claim 8 , wherein the first compression plate and the second compression plate cooperate together in the compressed position such that the target vessel portion is held between the first plurality of holding tabs and the second plurality of holding tabs.
10. The system as recited in claim 9 , wherein each holding tab terminates at a tip.
11. The system as recited in claim 10 , wherein a space is located between the tips of adjacent holding tabs on the first ring of the first compression plate, and wherein a space is located between the tips of adjacent holding tabs on the second ring of the second compression plate; and wherein the tips of the holding tabs of one plate are directed toward the spaces separating the tips of the holding tabs of the other plate when the plates are in the compressed position such that the holding tabs are in a mated configuration.
12. The system as recited in claim 11 , wherein the mated configuration of the holding tabs does not require penetration of the target vessel portion by the first plurality of holding tabs or the second plurality of holding tabs.
13. The system as recited in claim 11 , wherein said first plurality of holding tabs and said second plurality of holding tabs are sufficiently close together when the first compression plate and the second compression plate are in the compressed position that the tips of the holding tabs of each plate cause sections of the target vessel portion to extend into the spaces opposite the tips of the other plate.
14. The system as recited in claim 1 , wherein each holding tab of the first plurality of holding tabs extends nonperpendicularly from the first ring.
15. The system as recited in claim 1 , wherein said at least one guide extends from the first compression plate with a perpendicular orientation.
16. The system as recited in claim 1 , wherein one compression plate is formed from metal and the other compression plate is formed from plastic, and wherein the at least one guide extends from the compression plate formed from metal.
17. The system as recited in claim 1 , wherein both compression plates are formed from plastic.
18. The system as recited in claim 1 , wherein both compression plates are formed from metal.
19. The system as recited in claim 1 , wherein the landing of the anvil and the first compression plate opening are sized to permit the part of the wall of the vessel held between the landing of the anvil and the first compression plate to be held with sufficient force to prevent movement of the held part as the vessel portion is cut through engagement of a cutting device and the engaging end of the anvil.
20. The system as recited in claim 1 , wherein the landing of the anvil and the first compression plate opening are sized to permit the part of the wall of the vessel held between the landing of the anvil and the first compression plate to be held with sufficient force to prevent movement of the held part as the anvil is removed from the anastomosis site by moving the anvil through the first compression plate opening of the first compression plate and then through the second compression plate opening.
21. A compression plate anastomosis system, comprising:
an anvil apparatus comprising
an anvil comprising a landing between an engaging end and a terminal end, and
an anvil pull extending from the engaging end of the anvil;
a compression plate apparatus comprising
a first compression plate comprising a first ring and a first plurality of holding tabs extending from the first ring, wherein said first plurality of holding tabs defines a first compression plate opening; and
a second compression plate having a second compression plate opening; and
at least one guide fixedly extending from the first compression plate,
wherein the guide is retained in a friction fit engagement in a respective hole in the second compression plate such that the first and second compression plates are spaced apart in an initial position opposite from each other and such that the guide and the respective hole cannot inadvertently slide with respect to each other, and
wherein the guide and the corresponding hole permit the second compression plate to be driven to the first compression plate from the initial position, in a fixed parallel orientation relative to each other until the first compression plate and the second compression plate are in a compressed position with a friction fit engagement between the guide and the respective hole that prevents the plates from separating while remaining in the body; and
wherein the engaging end and the landing of the anvil are sized for movement within the first compression plate opening in a manner that permits a part of a wall of a first vessel at an anastomosis site to be held between the landing of the anvil and the first compression plate without penetration of the held part and with sufficient force to prevent movement of the held part as the second compression plate is driven to the first compression plate by overcoming the frictional resistance between the at least one guide and the respective hole.
22. The system as recited in claim 21 , wherein the engaging end of the anvil is flat.
23. The system as recited in claim 21 , wherein the engaging end of the anvil is convex.
24. The system as recited in claim 21 , wherein the landing of the anvil is a cylindrical.
25. The system as recited in claim 21 , wherein each holding tab of the first plurality of holding tabs extends nonperpendicularly from the first ring.
26. The system as recited in claim 21 , wherein each holding tab terminates at a rounded tip.
27. The system as recited in claim 21 , wherein the second compression plate comprises a second ring and a second plurality of holding tabs extending from the second ring, wherein the plurality of holding tabs define the second compression plate opening.
28. The system as recited in claim 27 , wherein the first compression plate and the second compression plate cooperate together in the compressed position such that the target vessel portion is held between the first plurality of holding tabs and the second plurality of holding tabs in a mated configuration.
29. The system as recited in claim 28 , wherein the mated configuration of the holding tabs does not require penetration of the target vessel portion by the first plurality of holding tabs or the second plurality of holding tabs.
30. The system as recited in claim 21 , wherein one compression plate is formed from metal and the other compression plate is formed from plastic, and wherein the at least one guide extends from the compression plate formed from metal.
31. The system as recited in claim 21 , wherein both compression plates are formed from plastic.
32. The system as recited in claim 21 , wherein both compression plates are formed from metal.
33. A compression plate anastomosis system, comprising:
an anvil apparatus comprising
an anvil comprising a landing between an engaging end and a terminal end, and
an anvil pull extending from the engaging end of the anvil;
a compression plate apparatus comprising
a first compression plate comprising a first ring and a first plurality of holding tabs extending from the first ring, wherein said first plurality of holding tabs defines a first compression plate opening; and
a second compression plate having a second compression plate opening;
wherein the landing and the first plurality of holding tabs are sized relative to each other such that the landing is sufficiently longer than the length of the first plurality of holding tabs to permit at least a portion of a region of the wall of the first vessel extending beyond the part held between the landing of the anvil and the first plurality of holding compression plate to rest on the landing of the anvil after formation of an anastomosis opening in a first vessel; and
at least one guide fixedly extending from the first compression plate,
wherein the guide is retained in a friction fit engagement in a respective hole in the second compression plate such that the first and second compression plates are spaced apart in an initial position opposite from each other and such that the guide and the respective hole cannot inadvertently slide with respect to each other, and
wherein the guide and the corresponding hole permit the second compression plate to be driven to the first compression plate from the initial position, in a fixed parallel orientation relative to each other until the first compression plate and the second compression plate are in a compressed position with a friction fit engagement between the guide and the respective hole that prevents the plates from separating while remaining in the body; and
wherein the engaging end and the landing of the anvil are sized for movement within the first compression plate opening in a manner that permits a part of a wall of a first vessel at an anastomosis site to be held between the landing of the anvil and the first compression plate without penetration of the held part and with sufficient force to prevent movement of the held part as the second compression plate is driven to the first compression plate by overcoming the frictional resistance between the at least one guide and the respective hole.
34. The system as recited in claim 33 , wherein the landing of the anvil and the first compression plate opening are sized to permit the part of the wall of the vessel held between the landing of the anvil and the first compression plate to be held with sufficient force to prevent movement of the held part as the vessel portion is moved on the landing by the second compression plate such that the first vessel portion becomes at least partially everted over the first plurality of holding tabs of the first compression plate.