Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-10-04
1990-09-11
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604263, A61M 532
Patent
active
049558684
ABSTRACT:
A modification of a hypodermic syringe shielding the needle from user so that inadvertant puncture to the user of syringe will not occur before, during or after the injection of subject. This modification removes the necessity for capping or recapping the syringe. It is an improvement over prior devices in that the hypodermic needle is moved out of shield with out pressure of the syringe on subject being injected allowing for full view of needle during injection making venipuncture possible. The needle retracts automatically back in shield with release of pressure on shield handle (5) and syringe handle (7) by means of spring (2). Gasket (3) prevents movement of needle in shield by unintentional forces, and the plunger rod handle operates independently of retracting or protracting needle allowing for filling of syringe, aspiration of syringe and injecting with syringe. This device allows the safe use of a medical hypodermic syringe with out fear of contracting diseases the subject being injected may have by inadvertant puncture of user afer injecting subject. It also gives operator full visability of needle, control of needle and indendent action of exposing and needle and injecting with syringe or withdrawing blood of patient through springe.
REFERENCES:
patent: 2876770 (1959-03-01), White
patent: 3995629 (1976-12-01), Patel
patent: 4639249 (1987-01-01), Larson
patent: 4660570 (1987-04-01), Dombrowski
patent: 4664654 (1987-05-01), Strauss
patent: 4767413 (1988-08-01), Haber et al.
patent: 4795432 (1989-01-01), Karczmer
Brown James J.
Yasko John D.
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