Retractable needle syringe and capping system

Details Retractable needle syringe and capping system Retractable needle syringe and capping system

1992-10-05

1994-08-30

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604110, A61M 500

Patent

active

053423232

ABSTRACT:
A simplified retractable needle hypodermic syringe is provided which includes a barrel having a needle carrier mounted therein with a cannula attached thereto. A slidable plunger is mounted within the barrel which includes a shaft and hub for locking to the carrier. The plunger seal is conveniently mounted about the shaft between the plunger and the hub. A removable safety cap is provided to cover the upper end of the plunger and the barrel to prevent accidental depression of the plunger and engagement of the hub with the carrier before use. The cap is placed over the open end of the barrel after use to provide a closed container. The shaft is broken off at above the hub leaving the hub and carrier in the barrel.

REFERENCES:
patent: 4026287 (1977-05-01), Haller
patent: 4507117 (1985-03-01), Vining
patent: 4643200 (1987-02-01), Jennings, Jr.
patent: 4650468 (1987-03-01), Jennings, Jr.
patent: 4675005 (1987-06-01), DeLuccia
patent: 4692156 (1987-09-01), Haller
patent: 4710170 (1987-12-01), Haber et al.
patent: 4747830 (1988-05-01), Gloyer et al.
patent: 4790822 (1988-12-01), Haining
patent: 4950251 (1990-08-01), Haining
patent: 5112316 (1992-05-01), Venturini
patent: 5147328 (1992-09-01), Dragosits et al.
patent: 5244465 (1993-09-01), Michel

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