A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 5/06 (2006.01) A61C 9/00 (2006.01) B05B 17/00 (2006.01) B65D 81/32 (2006.01)
Patent
CA 2624536
A dispensing syringe for dispensing a multi-component dental composition, preferably a two component composition, is provided. The syringe includes a syringe body with multiple elongated barrels for storing the components of the composition; a threaded plunger rod assembly; and a rotatable, threaded connector knob. Preferably, the syringe body has a double- barrel structure and the plunger rod assembly includes two plunger rods that slide within the barrels. The threaded knob has a through-bore with a continuous internal thread for engaging the outer threads of the first and second plunger rods. A dental practitioner manually rotates the knob to displace the first and second plunger rods and discharge the components. The dispensing syringe may further include a dispensing tip containing a static mixing element for mixing the components and dispensing the mixed composition.
L~invention concerne une seringue d~injection permettant d~administrer une composition dentaire multicomposant, de préférence une composition bicomposant. La seringue contient un corps de seringue avec de multiples barillets allongés permettant de stocker les composants de la composition ; un ensemble de tiges de compression filetées ; et un bouton connecteur fileté, rotatif. De préférence, le corps de seringue possède une structure à double barillet et l~ensemble de tiges de compression comporte deux tiges de compression coulissant dans les barillets. Le bouton fileté possède un alésage traversant avec filet interne continu permettant un engagement dans les filets externes des première et seconde tiges de compression. Un praticien dentaire fait tourner le bouton manuellement pour déplacer les première et seconde tiges de compression et injecter les composants. La seringue d~injection peut comprendre en outre une pointe d~injection contenant un élément de mélange statique pour mélanger les composants et injecter la composition mélangée.
Dentsply International Inc.
Pierson Paul R.
Smart & Biggar
LandOfFree
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