Balloon catheter and method for manufacturing catheter shaft...

Details Balloon catheter and method for manufacturing catheter shaft... Balloon catheter and method for manufacturing catheter shaft...

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61M 29/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2310466

A balloon catheter used in PTCA (Percutaneous Translumin Coronary Angioplasty), a catheter shaft for the catheter and a method of production of a balloon. The balloon catheter includes a catheter shaft (1A) comprising a multi-lumen shaft inclusive of a dual lumen tube and a balloon (2) disposed at the remotest end of the catheter shaft (1A). The catheter shaft (1A) is equipped with at least a guide wire lumen (4A) and an inflation lumen (4B), and is made of a resin material having a bending modulus contributing to push force transmission property and curved route follow-up property. A resin material layer (tube (5)) having high lubrication property and surface energy of not greater than 50 dyn/cm is disposed on the inner surface of the guide wire lumen (4A).

L'invention concerne une sonde à ballonnet convenant pour une ACTP (angioplastie coronarienne percutanée transluminale), une tige de sonde pour cette sonde et un procédé de production d'un ballonnet. La sonde de cathéter comprend une tige (1A) de sonde à lumières multiples, comprenant un tube à deux lumières et un ballonnet (2) disposé à l'extrémité la plus éloignée du tube (1A). La tige (1A) de sonde comprend au moins une lumière (4A) pour le fil-guide et une lumière (4B) de gonflage et est constituée d'un matériau de résine présentant un module de courbure contribuant à la transmission de la force de poussée et à la bonne observation de la trajectoire courbe. Une couche (tube(5)) de matériau de résine présentant un pouvoir de lubrification élevée et une tension superficielle ne dépassant par 50 dyn/cm, est disposée sur la surface interne de la lumière (4A) destinée au fil-guide.

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