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:
Mar. 22, 1994
Filed:
Oct. 01, 1992
Applicant:
Inventor:
Jean Grosrey, Arzier, CH;
Assignee:
Meditec S.A., Ecublens, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61G / ;
U.S. Cl.
CPC ...
433 81 ; 433224 ;
Abstract
The apparatus comprises a filling nozzle having a conical part so that it can fit in a leaktight manner on to a burred aperture in a tooth to be filled. The nozzle has a suction tube and a first annular channel connected to the suction tube and coming out into the dental cavity in order to create a vacuum therein. A second central channel serves to bring a filling paste from a reservoir to the dental cavity. The cross-section of flow of the first channel is several times smaller than that of the second channel, so that the paste travels much more slowly in the first channel than in the second, under the effect of the partial vacuum in the dental cavity.