Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-06-23
1989-09-12
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604160, A61M 500
Patent
active
048655937
ABSTRACT:
A cannula, such as commonly used for introduction of a catheter through the cannula into a body cavity, includes a plastic tube and an adaptor at one end of the tube. For easy removal of the cannula from around the catheter, the tube and adaptor are splittable along two or more longitudinal grooves or induction lines in the tube and adaptor. The induction lines are circumferentially spaced apart by an angle of 45.degree. to 180.degree.. Near the end of the tube opposite the adaptor, the induction lines in the tube are twisted, or extend circumferentially, providing increased stability of the induction lines to minimize premature splitting during manipulation of the cannula.
REFERENCES:
patent: Re31855 (1985-03-01), Osborne
patent: 3877429 (1975-04-01), Rasumoff
patent: 4402685 (1983-09-01), Buhler et al.
patent: 4581019 (1986-04-01), Curelaru
patent: 4772266 (1988-09-01), Groshong
Fujiwara Nobuyoshi
Ogawa Masaki
Allison Richard D.
Beck Andrew J.
Garber Stanley N.
Pellegrino Stephen C.
Sherwood Medical Company
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