Balloon catheter and technique for the manufacture thereof

Details Balloon catheter and technique for the manufacture thereof Balloon catheter and technique for the manufacture thereof

A - Human Necessities

61

M

128/127.1

A61M 25/00 (2006.01)

Patent

CA 1134705

BALLOON CATHETER AND TECHNIQUE FOR THE MANUFACTURE THEREOF Abstract A single-lumen, one piece catheter approximately 0.04 inch in diameter with an integral balloon at its end hav- ing a wall thickness of 0.005 or less, sufficiently small to be retractible by suction into the catheter and to be extensible at a desired site by fluid pressure. The bal- loon may have a calibrated restricted leak aperture. The balloon portion of the catheter is made by heating a por- tion of the catheter tubing, stretching the tubing length- wise, and applying fluid pressure to the tubing. The app- aratus for forming the balloon includes a spring-loaded clamp to hold the tubing at one end, a capstan to hold the tubing at the other end, a heating coil wrapped around the tubing near the clamped end thereof and mount- ed with the clamp, and a mechanism for controlling the pressure and volume of the pressurizing gas entering the lumen of the tube in accordance with the retractile move- ment of the spring-loaded clamp.

345700

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