Hydrostream thrombectomy system
A catheter for interacting with occlusive material in a blood vessel having a Coanda nozzle driven by an injected fluid flow which mixes with occlusive material to ablate and macerate the occlusive material.
1 . A Coanda effect catheter comprising:
a catheter body having at least one aperture directing fluid in a first jet direction;
a wall proximate the aperture at a wall/jet angle larger than 0 degrees and less than 60 degrees.
2 . The Coanda effect catheter of claim 1 wherein:
said wall is a surface of revolution about an axis aligned with the catheter body;
whereby the area of the wall surface increase in the direction of flow along the wall.
3 . The Coanda effect catheter of claim 2 wherein said wall surface is approximately conical.
4 . The Coanda effect catheter of claim 2 wherein said wall surface is approximately spherical.