Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
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).
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patent: 4671291 (1987-06-01), Wilson
Nudeshima Masahiro
Tanabe Susumu
Daley Kathleen A.
Rosenbaum C. Fred
Terumo Kabushiki Kaisha
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