Dental cartridge extruder with rigid drop-in front end

Details Dental cartridge extruder with rigid drop-in front end Dental cartridge extruder with rigid drop-in front end

1993-11-04

1996-02-06

Lucchesi, Nicholas D.

Dentistry

Apparatus

Having intra-oral dispensing means

A61C 504

Patent

active

054892074

ABSTRACT:
A manual dental extruder or syringe gun having a front end with rigid side walls and an opening therein adapted to receive a dental cartridge, capsule, ampule or tip having a flange. The body portion of the cartridge has a diameter less than that of the lateral width of the opening in the rigid side walls so that the dental cartridge can easily be dropped therein. At one end of the cartridge opening is a flange retainer. After dropping the dental cartridge in the front end, the cartridge is slid forward into the flange retainer. A portion of the rigid side walls extend over the flange when the dental cartridge is in position to be extruded. The rigid side walls improve the durability and strength of the dental extruder and prevents the dental cartridge from being pushed through the end of the extruder due to the large longitudinal forces required to extrude viscous dental materials.

REFERENCES:
patent: 3076455 (1963-02-01), McConnaughey et al.
patent: 3220412 (1965-11-01), McConnaughey et al.
patent: 4198756 (1980-04-01), Dragan
patent: 4295828 (1981-10-01), Rudler
patent: 4330280 (1982-05-01), Dougherty et al.
patent: 4384853 (1983-05-01), Welsh
patent: 4391590 (1983-07-01), Dougherty
patent: 5061179 (1991-10-01), Dragan
patent: 5125836 (1992-06-01), Dragan et al.
patent: 5306147 (1994-04-01), Dragan et al.

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