| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an anastomosis instrument which enables surgical procedures to be performed with the minimum number of percutaneous punctures and is used for fully and accurately deploy an anastomosis device at an anastomotic site among a plurality of lumens. <P>SOLUTION: An anastomosis device formed from a shape memory alloy (SMA) wire that is annealed into a tight coil (e.g., flat coil, helical coil, cylindrical coil) that is subsequently substantially straightened (e.g., straight, longitudinally stretched spring-like shape) for being constrained within an elongate member of an anastomosis introducer instrument. After positioning and holding two tissue walls of adjacent lumens into apposition with a distally-existing grasper of the instrument, a puncturing tip of the anastomosis device is fed and inserted through the tissue walls before being allowed to be stress-relaxed to its tight coil shape, thereby forming the anastomosis bonding. The anastomosis device is released from the anastomosis introducer instrument, such as by fully feeding its proximal end. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
