Medical tool introduction cannula and method of manufacturing th

Details Medical tool introduction cannula and method of manufacturing th Medical tool introduction cannula and method of manufacturing th

1989-03-28

1989-10-17

Truluck, Dalton L.

Surgery

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

Treating material introduced into or removed from body...

604280, A61M 2500

Patent

active

048743747

ABSTRACT:
Medical instrument introduction cannula, which is useful as a guide means for introducing and indwelling a rod-like medical instrument such as a catheter and a guide wire. This cannula is removed after use from the medical instrument by being splitted. This cannula is formed of a hollow tubular body having a strip member consisting of a material different from the other portion of the tubular body, which extends over the entire or almost the entire length of the tubular body. The strip member has a weld line along the length of the strip member, or consists of a resin which exhibits a good bonding property only to one of the other components forming the tubular body. The tubular body can be splitted by way of the weld line or the removal of the strip member having such a bonding property. The method of manufacturing the medical instrument introduction cannular by a two-color extruder is also disclosed.

REFERENCES:
patent: 3119392 (1964-01-01), Zeiss
patent: 3616990 (1971-11-01), Powell
patent: 4402685 (1983-09-01), Buhler et al.
patent: 4747833 (1988-05-01), Kousai
patent: 4776846 (1988-10-01), Wells
patent: 4781690 (1988-11-01), Ishida et al.

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