Transvenous staples, assembly and method for mitral valve repair

Abstract

A mitral valve staple device treats mitral regurgitation of a heart. The device includes first and second leg portions, each leg portion terminating in a tissue piercing end, and a connection portion extending between the first and second leg portions. The connection portion has an initial stressed and distorted configuration to separate the first and second leg portion by a first distance when the tissue piercing ends pierce the mitral valve annulus and a final unstressed and undistorted configuration after the tissue piercing ends pierce the mitral valve annulus to separate the first and second leg portions by a second distance which is shorter than the first distance. The device is deployed within the heart transvenously through a catheter positioned in the coronary sinus adjacent the mitral valve annulus. A tool forces the mitral valve staple device through the wall of the catheter for deployment in the heart.

1 . A device for effecting mitral valve annulus geometry of a heart, the device comprising: 
 first and second leg portions, each leg portion terminating in a tissue piercing end; and    a connection portion extending between the first and second leg portions, the connection portion having an initial stressed and distorted configuration to separate the first and second leg portions by a first distance when the tissue piercing ends pierce the mitral valve annulus and a final unstressed and undistorted configuration after the tissue piercing ends pierce the mitral valve annulus to separate the first and second leg portions by a second distance, the second distance being shorter than the first distance.    
   
   
       2 . The device of  claim 1  wherein the leg portions and connection portion are formed of the same material stock.  
   
   
       3 . The device of  claim 2  wherein the leg portions and the connection portion are formed from Nitinol.  
   
   
       4 . A device for effecting mitral valve annulus geometry of a heart, the device comprising: 
 first and second tissue piercing portions, each tissue piercing portion terminating in a tissue piercing end; and    a connection portion extending between the first and second tissue piercing portions, the connection portion having an initial stressed and distorted configuration to separate the first and second tissue piercing portions by a first distance when the tissue piercing ends pierce the mitral valve annulus and a final unstressed and undistorted configuration after the tissue piercing ends pierce the mitral valve annulus to separate the first and second tissue piercing portions by a second distance, the second distance being shorter than the first distance.    
   
   
       5 . A device for effecting tissue geometry of an organ, the device comprising: 
 first and second leg portions, each leg portion terminating in a tissue piercing end; and    a connection portion extending between the first and second leg portions, the connection portion having an initial stressed and distorted configuration to separate the first and second leg portions by a first distance when the tissue piercing ends pierce the tissue and a final unstressed and undistorted configuration after the tissue piercing ends pierce the tissue to separate the first and second leg portions by a second distance, the second distance being shorter than the first distance.