Screw-device for anastomosis

Abstract

The present invention, the screw-device, is a mechanical device for anastomosing hollow tube-like structures in the human body, such as blood vessels, bowels and ureters. It is thus not restricted to (micro-)vessels. It can be used in every surgical operation dealing with anastomosis and bypass operations. It allows anastomosing end to side or side to side. The screw-device is very easy to apply onto the vessel wall. Screwing is a fast technique saving operating time and requiring only basic microsurgical skills. The manufacturing is easy. Another advantage is that the screw-device can be mounted onto the receptor vessel without first opening and/or occluding this vessel. Later on, the receptor vessel wall can be opened with laser or scalpel. It should be understood that the foregoing is illustrative and not limiting, and that modifications may be made by those skilled in the art, without departing from the scope of the invention.

1 . An apparatus for introducing materials into a blood vessel comprising a first end and a second end with the first end having a screw-like spiral spring with several windings terminating in a sharp, round, non-cutting end pointed downwardly.  
   
   
       2 . The apparatus of  claim 1  wherein the spring has four to six windings with the non-cutting end pointing inwardly and downwardly in an angle of 10 to 20 degrees.  
   
   
       3 . The apparatus of  claim 1  wherein the second end having a screw-like spiral spring with several windings terminating in a sharp, round, non-cutting end pointed upwardly.  
   
   
       4 . A method of joining two blood vessels together comprising securing to a first blood vessel one end of a device having a screw-like spiral spring with several windings terminating in a sharp, round, non-cutting end pointed outwardly and then securing an opposite end of the device having a screw-like spiral spring with several windings terminating in a sharp, round, non-cutting end pointed outwardly to a second blood vessel.  
   
   
       5 . The method of  claim 4  comprising screwing the device into the first vessel wall and then screwing it into the second vessel wall.