Balloon catheter with adjustable shaft

Details Balloon catheter with adjustable shaft Balloon catheter with adjustable shaft

1997-08-22

1999-10-19

Stright, Ronald

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604103, A61M 2900

Patent

active

059680121

ABSTRACT:
The present invention provides a balloon catheter with a length compensator, which can be an accordion section or a slipping sleeve section. In the accordion section embodiment of the invention, the outer shaft of the catheter includes an accordion section positioned proximally of the balloon. In this embodiment the length compensator is comprised of the accordion section and the outer shaft between the accordion section and the point where the proximal end of the balloon is attached to the outer shaft. The distal end of the balloon is attached to an inner shaft. As the balloon is inflated the accordion section expands to adjust the axial length of the length compensator to compensate for the movement of the two ends of the balloon towards each other. In the slipping sleeve embodiment of the invention, the inner shaft of the catheter includes a slipping sleeve section positioned proximally of the point where the distal end of the balloon is connected to the inner shaft. As the balloon is expanded, the slipping sleeve section contracts, adjusting the axial length of the length compensator to compensate for the shrinkage of the balloon as it expands into contact with the vasculature.

REFERENCES:
patent: 5316016 (1994-05-01), Adams et al.
patent: 5466230 (1995-11-01), Davila

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