Method and apparatus for performing anastomosis using ring having tines with weak sections
First Claim
1. A ring for use in preparing a first organ having an orifice for anastomosis with a second organ, said ring comprising:
- a ring portion sized to extend around the orifice of the first organ; and
malleable tines extending radially inward from the ring portion, and having free distal ends deformed by a bending force into a configuration such that tips of said free distal ends curl toward portions of said tines from which said distal tips extend, each of said tines further having a weak portion between said ring portion and said free distal end, each of said tines further bent in a location of said weak portion, in a direction opposite to a direction of bending of said tips.
3 Assignments
0 Petitions
Accused Products
Abstract
Anastomosis devices, methods and apparatus for installing the devices in the performance of an anastomosis. One example of a device includes a central ring portion from which malleable tines and optionally also fastener elements extend. Each tine may have a weakened section at which it preferentially folds or buckles when subjected to bending force. Each tine can grab and evert tissue around an orifice in which it is installed, as it is moved from an initial to a final configuration. To install a device, the tines are advanced against an anvil to cause them to grab tissue around the orifice and curl radially. The anvil is then retracted to fold the tines so their curled ends move radially outward.
111 Citations
16 Claims
-
1. A ring for use in preparing a first organ having an orifice for anastomosis with a second organ, said ring comprising:
a ring portion sized to extend around the orifice of the first organ; and
malleable tines extending radially inward from the ring portion, and having free distal ends deformed by a bending force into a configuration such that tips of said free distal ends curl toward portions of said tines from which said distal tips extend, each of said tines further having a weak portion between said ring portion and said free distal end, each of said tines further bent in a location of said weak portion, in a direction opposite to a direction of bending of said tips.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. A ring for use in preparing a first organ having an orifice for anastomosis with a second organ, said ring comprising:
a ring portion sized to extend around the orifice; and
malleable tines extending radially inward from the ring portion, each of said tines, when in a final configuration, having a proximal portion which extends radially inward away from the ring portion, a distal portion folded toward a portion of said tine from which said distal portion extends, for holding tissue of the first organ in an everted state, and a central portion between the proximal portion and the distal portion, and said each of the tines in the final configuration is bent radially outward at said central portion toward the ring portion.- View Dependent Claims (12, 13, 14, 15, 16)
Specification