Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1986-04-11
1987-08-04
Peshock, Robert
Dentistry
Apparatus
Having intra-oral dispensing means
A61C 502
Patent
active
046843442
ABSTRACT:
An endodontic syringe for injecting thermoplastic material, such as gutta percha into a root canal cavity. The syringe includes a drive motor and mechanism for reversible axial translation of a plunger, a removable gutta percha cartridge and needle, and a heating element surrounding the cartridge to heat the gutta percha to a fluid condition. Forward movement of the plunger, against a piston within the cartridge, ejects gutta percha for the cartridge and needle. Reverse movement of the plunger returns it to its starting position, at which the used cartridge can be removed and replaced.
The cartridge and needle are of aluminum or aluminum alloy.
REFERENCES:
patent: 2691374 (1954-10-01), McKibbin et al.
patent: 4582488 (1986-04-01), Newman
Brockway Charles E.
Saeli John J.
Nalge Company
Peshock Robert
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