Single use hypodermic needle

Details Single use hypodermic needle Single use hypodermic needle

1990-12-20

1991-11-26

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604240, 604215, A61M 500

Patent

active

050679422

ABSTRACT:
A single use needle assembly includes a needle extending through a base with a hub extending from the base for engaging a syringe. The end of the needle within the hub has a port which is covered by a retractable sheath. When the needle assembly and a syringe are assembled, two separable tabs held within a basket force the sheath to retract and expose the port in the needle whereby a fluid can flow through the needle. Upon disassembly of the needle syringe, the tabs separate from the basket and are effectively destroyed for further use in retracting the sheath.

REFERENCES:
patent: 2841143 (1958-07-01), Bertram
patent: 3523533 (1970-08-01), Burke
patent: 3895633 (1975-07-01), Bartner et al.
patent: 4233975 (1980-11-01), Yerman
patent: 4404862 (1983-09-01), Harris, Sr.
patent: 4770655 (1988-09-01), Haber et al.
patent: 4828547 (1989-05-01), Saki et al.
patent: 4923443 (1990-05-01), Greenwood et al.
patent: 4935041 (1990-06-01), Haber
patent: 4978340 (1990-12-01), Terrill et al.
patent: 4984580 (1991-01-01), Wanamaker

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