Dental syringe having an automatically retractable medication ca

Details Dental syringe having an automatically retractable medication ca Dental syringe having an automatically retractable medication ca

1992-06-09

1993-12-14

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604232, A61M 532

Patent

active

052697665

ABSTRACT:
A reusable dental syringe having a hollow cylinder, a prefilled medication carpule to be received within the cylinder, and a hypodermic needle cannula communicating with the carpule and extending outwardly from the cylinder for administering an injection. The syringe also includes a retaining collar which can be moved, against the normal bias of a compression spring, axially and distally through the cylinder and into engagement with the carpule. A slide lock is adapted to lock the retaining collar at the distal position within the cylinder. After a injection has been administered and the carpule emptied, the slide lock may be moved to release the retaining collar from the distal position. The compression spring is now free to return to its normal bias, whereby to drive the retaining collar and the empty carpule connected thereto axially and proximally through the cylinder. Accordingly, the needle cannula is automatically relocated from the outwardly extended position to a retracted position within the cylinder so as to prevent an accidental needle stick and the spread of a contageous, and possibly life threatening, disease.

REFERENCES:
patent: 2876770 (1959-03-01), White
patent: 3780734 (1973-12-01), Walff
patent: 4573976 (1986-03-01), Sampson et al.
patent: 4592745 (1986-06-01), Rex et al.
patent: 4664654 (1987-05-01), Strauss
patent: 4767413 (1988-08-01), Haber et al.
patent: 4772272 (1988-09-01), McFarland
patent: 4795443 (1989-01-01), Permenter et al.
patent: 4801295 (1989-01-01), Spencer
patent: 4834717 (1989-08-01), Haber et al.
patent: 4932947 (1990-06-01), Cordwell
patent: 4957490 (1990-09-01), Byrne et al.
patent: 4994042 (1991-02-01), Vadher
patent: 5013301 (1991-05-01), Marotta, Jr. et al.
patent: 5088988 (1992-02-01), Talohn et al.
patent: 5106379 (1992-04-01), Leap

Affiliated with

Also associated with

Rating

Dental syringe having an automatically retractable medication ca does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dental syringe having an automatically retractable medication ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dental syringe having an automatically retractable medication ca will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1701219