Flexible catheter

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

Patent

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Details

604526, A61M 2500

Patent

active

059615109

ABSTRACT:
A medical catheter comprising a distal shaft having a greater flexibility than the proximal shaft. The proximal shaft has a helical end portion of reduced outer diameter which is integral with and extending from the distal end of the proximal shaft. The helical end portion slidingly fits within a portion of the proximal end of the distal shaft. The helical end portion is bonded to at least a portion of the distal shaft to form a fluid-tight seal. The pitch of the helical end portion may be constant or variable. The helical turns may be abutting or spaced apart. A guidewire shaft centrally extends longitudinally through the proximal and distal shaft such that fluid can be transmitted through the proximal and distal shaft, exterior to the guidewire shaft.

REFERENCES:
patent: 4960410 (1990-10-01), Pinchuk
patent: 5328472 (1994-07-01), Steinke et al.
patent: 5410797 (1995-05-01), Steinke et al.
patent: 5454795 (1995-10-01), Samson
patent: 5460608 (1995-10-01), Lodin et al.
patent: 5599326 (1997-02-01), Carter
patent: 5690613 (1997-11-01), Verbeek
patent: 5702373 (1997-12-01), Samson

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