Multifunctional retractable needle type general purpose disablin

Details Multifunctional retractable needle type general purpose disablin Multifunctional retractable needle type general purpose disablin

1990-07-24

1992-05-19

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

604137, A61M 532

Patent

active

051144042

ABSTRACT:
A retractable needle-type syringe having a maximum amount of safety features, including maintaining the needle of the syringe in a retracted and totally shielded position prior to use. After an injection has been given, the plunger rod of the syringe can be operated by one hand of the user in such a manner as to completely and totally disable the syringe and thereby render secondary use of the syringe practically impossible. This feature leaves the other hand of the user out of danger and proximity to the syringe and available to perform other patent-assisting functions. The above multifunctional nature and operation of this invention is accomplished through the use of a minimum number individual components which are uniquely adapted for packaging and cooperative interaction within an elongated cylindrical housing of the syringe. In addition, this syringe may be manufactured in a cost-effective economical manner to produce a universal and reliable general purpose syringe having a high price-performance figure of merit.

REFERENCES:
patent: 4188950 (1980-02-01), Wardlaw
patent: 4378015 (1983-03-01), Wardlaw
patent: 4826484 (1989-05-01), Haber et al.
patent: 4894005 (1990-01-01), Sudnak
patent: 4955869 (1990-09-01), Bin
patent: 4966593 (1990-10-01), Lennox
patent: 4978340 (1990-12-01), Terrell et al.
patent: 4978343 (1990-12-01), Dysarz et al.
patent: 4986813 (1991-01-01), Blake et al.

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