Single-use syringe

Details Single-use syringe Single-use syringe

1989-01-09

1991-02-05

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604232, A61M 532, A61M 500

Patent

active

049901419

ABSTRACT:
A syringe which is suitable for discarding after a single use takes the form of a generally tubular syringe body which has a double-ended hollow needle extending generally axially through a first, closed end of the body and is open at its second end to permit insertion of a liquid container such as an ampoule containing a liquid material to be injected. A removable plunger rod is provided to enter such a container within the syringe body to inject liquid from it via the needle, and one or more resilient projections extend generally radially inwardly from the open end of the syringe body, to allow insertion of a liquid container but prevent its subsequent withdrawal.

REFERENCES:
patent: 3811441 (1974-05-01), Sarnoff
patent: 3895633 (1975-07-01), Bartner et al.
patent: 4221218 (1980-09-01), Pfleger
patent: 4252118 (1981-02-01), Richard et al.
patent: 4391272 (1983-07-01), Staempfli
patent: 4583978 (1986-04-01), Porat et al.
patent: 4650468 (1987-03-01), Jennings, Jr.
patent: 4693706 (1987-09-01), Ennis, III
patent: 4702738 (1987-10-01), Spencer
patent: 4723945 (1988-02-01), Theiling
patent: 4731068 (1988-03-01), Hesse
patent: 4752290 (1988-06-01), Schramm
patent: 4758232 (1988-07-01), Chak
patent: 4801295 (1989-01-01), Spencer
patent: 4804372 (1989-02-01), Laico et al.
patent: 4820272 (1989-04-01), Palmer
patent: 4850994 (1989-07-01), Zerbst et al.

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