Drainage catheter tip shape configuration
View Patent ↗A percutaneous catheter includes a longitudinal catheter shaft having a distal end, a proximal end, a hollow portion, and a wall portion, a wire embedded within said wall portion at said distal end wherein said wire forms a pigtail curve when in a relaxed state, and a stylet capable of entering said hollow portion of said longitudinal catheter at said proximal end wherein said stylet substantially straightens said longitudinal catheter at said distal end.
1. A method of fixing a catheter within a body cavity comprising:
inserting a distal end of a catheter into a body cavity, the catheter including a longitudinal catheter shaft having a distal end, a proximal end, a hollow portion, and a wall portion, a first wire embedded within said wall portion at said distal end wherein said first wire forms a C-curve when in a relaxed state, a second wire embedded opposite to said first wire within said wall portion;
wherein said second wire forms a C-curve at a first portion, is substantially straight at a second portion of said second wire, and is exposed at said proximal end of said longitudinal catheter shaft;
securing the catheter within the body cavity by twisting said second portion of said second wire so as to allow said first and second wires to form a pigtail curve; and
wherein neither said first or second wires are withdrawn substantially backwards along the longitudinal catheter shaft while securing the catheter.
2. The method of fixing a catheter within a body cavity of claim 1 , wherein the first and second wire is manufactured from a shape memory alloy.
3. The method of fixing a catheter within a body cavity of claim 2 , wherein the shape memory alloy is Nitinol.
4. The method of fixing a catheter within a body cavity of claim 1 , wherein the longitudinal catheter shaft has a plurality of perforations at said distal end.