Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1989-10-10
1992-07-14
Stone, Cary E.
Dentistry
Apparatus
Having intra-oral dispensing means
2395871, 222325, 604232, A61C 504
Patent
active
051298252
ABSTRACT:
This disclosure is directed to a dental syringe having a capsule holder and a plunger for accurately and precisely placing a viscous or low viscosity composite resin dental restorative material from a capsule directly into a tooth. The improvement resides in a plunger having an ejector tip which is maintained under a positive bias that is intended to retract when a resistance exceeding a predetermined amount is met during an ejecting procedure so as to prevent any build-up of pressure within the capsule containing the material to be dispensed that may tend to distort or rupture the capsule. In the case of a low viscosity resin, the plunger having an ejector tip maintained under a positive bias that is intended to retract when the speed of ejection exceeds that of a predetermined rate, so as to prevent sudden and excessive extrusion of material from the capsule. The capsule containing the viscous material may also be provided with a reinforced body portion to further aid in resisting any built-up internal pressure within the capsule during an ejecting procedure. The capsule may also include orientation notches formed on the flange for engaging a stop detent for positively maintaining the capsule in a predetermined oriented angular position relative to the holder.
REFERENCES:
patent: 3724077 (1973-04-01), Preston et al.
patent: 3900954 (1975-08-01), Dragan
patent: 4384853 (1983-05-01), Welsh
patent: 4457712 (1984-07-01), Dragan
patent: 4758158 (1988-07-01), Pierce et al.
patent: 4767326 (1988-08-01), Bennett et al.
patent: 4931040 (1990-06-01), Haber et al.
Fattibene Arthur T.
Fattibene Paul A.
Lepiane Adriene B.
Stone Cary E.
LandOfFree
Dental syringe and capsule for use therewith 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 and capsule for use therewith, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dental syringe and capsule for use therewith will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-331923