Blood vessel closure clip and delivery device

Abstract

A medical device including a shape-memory metallic body comprising a plurality of closed cells with a plurality of terminal cell ends and a plurality of tissue engaging members extending from the shape-memory metallic body, a shaft of each tissue engaging member extending from the terminal cell end at least approximately in a direction of the long axis of the closed cell in an expanded configuration.

What is claimed is: 
     
         1 . A medical device comprising:
 a shape-memory metallic body comprising a plurality of closed cells with a plurality of terminal cell ends; and   a plurality of tissue engaging members extending from the shape-memory metallic body, a shaft of each tissue engaging member extending from the terminal cell end at least approximately in a direction of the long axis of the closed cell in an expanded configuration.   
     
     
         2 . The medical device of  claim 1 , wherein each tissue engaging member comprises a barb. 
     
     
         3 . The medical device of  claim 1 , wherein the shape-memory metallic body comprises a plurality of struts and a plurality curved portions forming the plurality of closed cells. 
     
     
         4 . The medical device of  claim 3 , wherein each closed cell forms a generally parallelogram-shaped opening. 
     
     
         5 . The medical device of  claim 1 , wherein the plurality of tissue engaging members extend from less than all the terminal cell ends. 
     
     
         6 . The medical device of  claim 1 , wherein the plurality terminal cell ends are arranged in an annular row and the plurality of tissue engaging members extend from less than all the terminal cell ends. 
     
     
         7 . A medical device comprising:
 a shape-memory metallic body comprising a plurality of closed cells, each closed cell comprising a first end and a second end disposed across the closed cell along a long dimension of the closed cell; and   a plurality of prongs extending from the shape-memory metallic body, each prong comprising an elongate shaft that extends from one of the first end or the second end of the closed cell, the plurality of prongs extending to mutually converge slightly towards a central axis of the shape-memory metallic body in an expanded configuration.   
     
     
         8 . The medical device of  claim 7 , wherein each prong is barbed. 
     
     
         9 . The medical device of  claim 8 , wherein the shape-memory metallic body comprises a plurality of struts and a plurality curved portions forming the plurality of closed cells. 
     
     
         10 . The medical device of  claim 9 , wherein each closed cell forms a generally parallelogram-shaped opening in the expanded. 
     
     
         11 . The medical device of  claim 7 , wherein one of the first end or the second end of the closed cell is annularly disposed between adjacent prongs of the plurality of prongs. 
     
     
         12 . The medical device of  claim 7 , wherein the first ends and the second ends are arranged in annular rows and one of the first end or the second end of the closed cell is annularly disposed between adjacent prongs of the plurality of prongs. 
     
     
         13 . The medical device of  claim 7 , wherein a diameter of the shape-memory metallic body can be increased by a factor of three to the expanded configuration. 
     
     
         14 . A medical device comprising:
 a shape-memory metallic body comprising a plurality of closed cells, each closed cell comprising a first end and a second end disposed on opposite sides of the closed cell in a long dimension direction; and   a plurality of prongs extending from the shape-memory metallic body, each prong comprising an elongate shaft that extends from one of the first end or the second end of the closed cell, each shaft extending generally towards a central axis of the shape-memory metallic body in the expanded configuration, with a barb extending away from the central axis.   
     
     
         15 . The medical device of  claim 14 , wherein the shape-memory metallic body comprise a plurality of struts and a plurality curved portions forming the plurality of closed cells. 
     
     
         16 . The medical device of  claim 15 , wherein each closed cell forms a generally parallelogram-shaped opening. 
     
     
         17 . The medical device of  claim 16 , wherein the plurality of prongs extend from less than all of the first end or the second end. 
     
     
         18 . The medical device of  claim 17 , wherein the first ends and the second ends are arranged in annular rows. 
     
     
         19 . The medical device of  claim 18 , wherein the shape-memory metallic body comprise Nitinol. 
     
     
         20 . The medical device of  claim 19 , wherein a plurality of the plurality of closed cells are disposed side-by-side round the shape-memory metallic body.