Retractable needle syringe

Details Retractable needle syringe Retractable needle syringe

1991-05-20

1992-10-06

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

051527502

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.

REFERENCES:
patent: 4026287 (1977-05-01), Haller
patent: 4507117 (1985-03-01), Vining
patent: 4643200 (1987-02-01), Jennings
patent: 4650468 (1987-03-01), Jennings
patent: 4675005 (1987-06-01), DeLuccia
patent: 4692156 (1987-09-01), Haller
patent: 4710170 (1987-12-01), Haber
patent: 4747830 (1988-05-01), Gloyer et al.
patent: 4790822 (1988-12-01), Haining
patent: 4919652 (1990-04-01), Alter et al.
patent: 4950251 (1990-08-01), Haining

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