The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 1990
Filed:
Nov. 14, 1988
Terry M Haber, El Toro, CA (US);
Cark B Foster, Laguna Niguel, CA (US);
Habley Medical Technology Corporation, Laguna Hills, CA (US);
Abstract
A reusable dental syringe including a conventional medication filled carpule and a conventional double ended needle cannula which is to be retracted into a compact enclosure to permit the safe handling and disposal of the cannula while avoiding an accidental needle stick and the possible spread of disease. The carpule is inserted into a hollow carpule adapter to engage a movable needle carrier at the distal end of the adapter. The combination carpule and adapter are loaded into the cylinder of the syringe, and the needle cannula is attached to the needle carrier to penetrate the carpule. At the conclusion of an injection, the combination carpule and carpule adapter are rotated outwardly from the syringe cylinder, and the carpule is then pulled rearwardly through the adapter, whereby to correspondingly relocate and anchor the movable needle carrier at the proximal end of the adapter. Accordingly, the needle cannula is retracted into and surrounded by the adapter so as to be irretrievably located and rendered non-reusable therewithin.