Disposable syringe device

Details Disposable syringe device Disposable syringe device

1989-06-23

1991-02-26

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604110, A61M 532

Patent

active

049958747

ABSTRACT:
A disposable syringe having a needle which may be easily withdrawn to safety after use is disclosed. The syringe includes a cylinder and plunger in which a threaded extension or threadlock on the forward end of the plunger is capable of engaging a threadbore element positioned within the forward neck portion of the cylinder after the injectable fluid has been expelled from the cylinder. The threadbore element is secured to the needle. Rotation of the plunger causes the threadlock to engage the threadbore and the needle may be withdrawn into the interior of the cylinder by pulling the plunger rearwardly.

REFERENCES:
patent: 4675005 (1987-06-01), DeLuccia
patent: 4747830 (1988-05-01), Gloyer et al.
patent: 4790822 (1988-12-01), Haining

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