Anti-stick contagion free disposable hypodermic safety syringe

Details Anti-stick contagion free disposable hypodermic safety syringe Anti-stick contagion free disposable hypodermic safety syringe

1987-01-12

1988-05-31

Truluck, Dalton L.

Surgery

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

Treating material introduced into or removed from body...

604198, A61M 532

Patent

active

047478306

ABSTRACT:
A disposable safe hypodermic syringe. Includes a hollow barrel formed with a support collar at one end to enclose and releaseably latch a needle support member and a hypodermic needle carried by the support member. The barrel is formed at its distal second end to receive an injection piston carried by the plunger member. The plunger head and needle support member cooperate to form a latch for latching the support member to the plunger head, releasing the support member from the support collar, and withdrawing the plunger head, support member, and needle together to a protective position within the barrel. A latch carried by the injection piston and by the second end of the barrel finally latches the injection piston, plunger head, support member, and needle together to a contagion safe position. Two embodiments are disclosed.

REFERENCES:
patent: 2688325 (1954-09-01), Lockhart
patent: 3354882 (1967-11-01), Coanda
patent: 4459997 (1984-07-01), Sarstedt
patent: 4562844 (1986-01-01), Carpenter et al.
patent: 4573976 (1986-03-01), Sampson et al.
patent: 4650468 (1987-03-01), Jennings
patent: 4655751 (1987-04-01), Harbaugh
patent: 4675005 (1987-06-01), De Luccia

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