One-time use hypodermic syringe apparatus and operation thereof

Details One-time use hypodermic syringe apparatus and operation thereof One-time use hypodermic syringe apparatus and operation thereof

1993-08-23

1994-07-12

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604210, 604218, A61M 500

Patent

active

053284763

ABSTRACT:
A hypodermic syringe apparatus having a plunger with first and second sets of grooves, and a casing having first and second lock members, such that when the plunger is fully inserted or reinserted into the casing, the plunger is prevented from being withdrawn relative to the casing. The first and second sets of grooves of the plunger have stepped portions, such that the plunger can be withdrawn relative to the casing when the plunger is positioned (position A) in such a way that the first set of grooves interacts with the first lock member of the casing; and such that the plunger can be inserted or reinserted into the casing when the plunger is positioned (position B) in such a way that the second set of grooves interacts with the second lock member of the casing.

REFERENCES:
patent: 4840616 (1989-06-01), Banks
patent: 5024661 (1991-06-01), Wender et al.
patent: 5250030 (1993-10-01), Corsich

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