Delivery tool of a viscoelastic syringe assembly

Abstract

A delivery tool connectable with a syringe can be used to deliver a viscoelastic solution. The tool includes a first segment, a second segment and an inner lumen defined by the first and second segments. A distal portion extends from the second segment in a curved manner.

What is claimed is: 
     
         1 . A method of delivering viscoelastic fluid to an eye, the method comprising:
 providing a delivery device including:
 a cannula having an inner lumen that terminates at a distal opening, and 
 a tip portion including a surface extending from and fixed to a portion of the cannula that forms the distal opening, wherein opposite the cannula, the tip portion has a distal tip having a substantially bulbous shape fixed to the surface that originates at a distal end of the surface such that the substantially bulbous shape is separated from the distal opening by the surface; and 
 directing viscoelastic fluid through the cannula, to the surface and then over an external surface forming the substantially bulbous shape and to deliver the viscoelastic fluid to the eye. 
   
     
     
         2 . The method of  claim 1 , wherein a syringe directs the viscoelastic fluid through the cannula. 
     
     
         3 . The method of  claim 2 , wherein the syringe is connected to the cannula with a hub. 
     
     
         4 . The method of  claim 1 , wherein the distal tip is rigid. 
     
     
         5 . The method of  claim 1 , wherein the surface tapers from the distal opening to the distal tip. 
     
     
         6 . The method of  claim 1 , wherein the surface continually tapers from the distal opening to the distal tip. 
     
     
         7 . The method of  claim 1 , wherein the surface is beveled. 
     
     
         8 . The method of  claim 1 , wherein the substantially bulbous shape is ovoid. 
     
     
         9 . The method of  claim 1 , wherein the cannula includes a first segment and a second segment. 
     
     
         10 . The method of  claim 9 , wherein the second segment extends outwardly from a first central axis of the first segment at an angle. 
     
     
         11 . The method of  claim 10 , wherein the angle is in a range of approximately 20 to 90 degrees. 
     
     
         12 . The method of  claim 11 , wherein the angle is about 45 degrees. 
     
     
         13 . The method of  claim 10 , wherein the second segment has a second central axis; wherein the distal tip deviates from a plane defined by the first central axis and the second central axis. 
     
     
         14 . The method of  claim 1 , wherein the wherein the tip portion deviates from a central axis of the cannula proximate the distal opening. 
     
     
         15 . The method of  claim 1 , wherein the tip portion is curved. 
     
     
         16 . The method of  claim 1 , wherein the distal opening shares a central axis with the cannula. 
     
     
         17 . The method of  claim 1 , wherein the distal opening has a diameter equal to that of the inner lumen.