Vessel closure device

Abstract

The present invention relates to closing an opening within a subcutaneous bodily vessel by using a spiral closure device to engage tissue around the opening. The spiral closure device is adapted to be threaded into the vessel wall surrounding the opening in the bodily vessel. A deployment mechanism may be used to rotate the spiral closure device. As the deployment mechanism is rotated the spiral closure device is rotated such that a tip of the spiral closure device engages the vessel wall around the opening in the bodily vessel. Continued rotation of the spiral closure device threads the closure device through the tissue around the opening. The closure device may have a tapered configuration in which the distal end is larger than the proximal end. As the distal end is threaded through the vessel wall, the narrowing closure device pulls the vessel wall tissue together, thereby effectively closing the opening.

1 .- 20 . (canceled) 
     
     
         21 . A device for engaging tissue, the device comprising:
 a first coil member and a second coil member, each configured to engage tissue, the first and second coil members forming a double-helix.   
     
     
         22 . The device of  claim 21 , wherein coils of the first coil member are perpendicular to coils of the second coil member. 
     
     
         23 . The device of  claim 21 , wherein a pitch between adjacent coils of the first coil member are equidistant. 
     
     
         24 . The device of  claim 21 , wherein a pitch between adjacent coils of the second coil member are equidistant. 
     
     
         25 . The device of  claim 21 , wherein a pitch between adjacent coils of the first coil member are different. 
     
     
         26 . The device of  claim 21 , wherein a pitch between adjacent coils of the second coil member are different. 
     
     
         27 . The device of  claim 21 , wherein each of the first coil member and the second coil member comprises a wire. 
     
     
         28 . The device of  claim 21 , wherein each coil of the first coil member and the second coil member is wound in an irregular geometric shape. 
     
     
         29 . The device of  claim 21 , wherein the first coil member and the second coil form a generally cylindrical shape to the device. 
     
     
         30 . The device of  claim 21 , wherein the first coil member and the second coil member form a taper to the device. 
     
     
         31 . A system for engaging tissue, the system comprising:
 a device comprising a first coil member and a second coil member, the first and second coil members forming a double-helix, the first coil member and the second coil forming a generally cylindrical shape to the device; and   a closure system operatively cooperating with the device to rotate the device into tissue.   
     
     
         32 . The system of  claim 31 , wherein the first coil member comprises a tissue penetrating tip. 
     
     
         33 . The system of  claim 31 , wherein the closure system comprises a deployment member cooperating with a proximal end of the device, the deployment member configured to rotate the device. 
     
     
         34 . The system of  claim 31 , wherein the deployment member comprises a retention recess to receive a proximal end of the device. 
     
     
         35 . The system of  claim 34 , wherein the retention recess is curved. 
     
     
         36 . The system of  claim 31 , wherein the first coil member and the second coil member are formed from an alloy. 
     
     
         37 . The system of  claim 31 , further comprising a member configured to aid with aligning the device. 
     
     
         38 . The system of  claim 37 , wherein the member is a bleed-back device.