Reverse thread carpule dental safety syringe

Details Reverse thread carpule dental safety syringe Reverse thread carpule dental safety syringe

1992-10-21

1994-07-19

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604110, 604192, 604196, A61M 532

Patent

active

053304403

ABSTRACT:
This invention pertains to a novel reverse thread carpule dental safety syringe which is useful to dentists in freezing the gums of their patients prior to performing dental work on the patients' teeth, and subsequently retracting the needle into the carpule. A dental syringe for use with a carpule comprising: (a) a hollow barrel; (b) a handle and plunger adapted to reciprocate within the barrel, the end of the plunger removed from the handle being adapted to releasably engage with a first end of a carpule; (c) a carpule receiving cavity at one end of the barrel in alignment with the plunger; and (d) an engagement member at the end of the barrel opposite the handle and plunger for releasably engaging a second end of a carpule.

REFERENCES:
patent: 5125908 (1992-06-01), Cohen
patent: 5167641 (1992-12-01), Schmitz
patent: 5263933 (1993-11-01), Novacek et al.

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