Catheter

Details Catheter Catheter

1987-05-01

1989-06-13

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

128658, A61M 2500

Patent

active

048388793

ABSTRACT:
A catheter having a curved distal end portion or a flexible distal end portion able to bend when being used, which comprises at least one radio opaque ring member provided on the circumference of the catheter, for indicating the direction of the end portion. The radio opaque ring member has an outer diameter approximately equal to that of the catheter, and a width (or a length along the axial direction of the catheter) L which satisfies the following relationship with the magnitude of the inner diameter D of the ring members: L.ltoreq.Dtan(.pi./8).

REFERENCES:
patent: 2212334 (1940-08-01), Wallerich
patent: 3483859 (1969-12-01), Pittman
patent: 3605750 (1971-09-01), Sheridan et al.
patent: 3885561 (1975-05-01), Cami
patent: 4279252 (1981-07-01), Martin
patent: 4469483 (1984-09-01), Becker et al.
patent: 4571240 (1986-02-01), Samson et al.
patent: 4581390 (1986-04-01), Flynn
patent: 4657024 (1987-04-01), Coneys
patent: 4671291 (1987-06-01), Wilson

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