Integrated mixing and dispensing apparatus
AssigneeUltradent Products, Inc.
InventorsDan E. Fischer, Bruce S. McLean
Life of this patent
Estimating the term…
Abstract
A syringe apparatus for mixing and delivering a two-part material has (i) a syringe barrel and a plunger. The apparatus also has a paddle slidably coupled to the plunger. A distal insertion end of the plunger has a slot therein. A proximal end of the paddle is slidably coupled within the slot. The paddle is movable between an extended position and a contracted position with respect to the plunger. Upon placing material into the barrel, such as through an opening in the wall of the barrel, the paddle can be employed to mix the material. After such mixing, the plunger is pressed further into the barrel without removing the paddle, thereby expressing the mixed material from the barrel and compressing the paddle into the slot of the plunger.
Claims27
An apparatus for mixing and dispensing a composition, the apparatus comprising:
- a syringe barrel for receiving a composition, the syringe barrel having a proximal opening and a distal opening;
- advancing means for advancing a composition within the syringe barrel, the advancing means having a proximal gripping end, a distal insertion end, and an elongate opening formed in the distal insertion end, the distal insertion end of the advancing means being receivable within the barrel;
- and
- a paddle for selectively mixing a composition within the syringe barrel, the paddle being telescopically coupled to the insertion end of the advancing means such that the paddle slides into the elongate opening as the advancing means is advanced into the syringe barrel to dispense the composition out distal opening.
An apparatus for mixing and dispensing a composition, the apparatus comprising:
- a syringe barrel having a proximal opening and a distal opening;
- a plunger having a proximal gripping end, a distal insertion end, and an elongate slot formed in the distal insertion end, the distal insertion end of the advancing means being receivable within the barrel;
- and
- a paddle having a proximal end and a distal end and configured to slidably engage the elongate slot, the paddle being movably coupled to the distal insertion end of the plunger such that the proximal end of the paddle slides longitudinally within the slot.
An apparatus for mixing and dispensing a composition, the apparatus comprising:
- a syringe barrel having proximal opening and a distal opening;
- a plunger having a proximal gripping end and a distal insertion end, the distal insertion end being receivable within the barrel, the distal insertion end having a slot therein;
- and
- a paddle having a proximal end and a distal end, the proximal end slidably coupled within the slot of the plunger, the paddle selectively sliding between an extended position and a contracted position with respect to the plunger as the plunger is moved within the barrel.
Dependencies are inferred from the claim text.