MIXING SYRINGE

• US 3,767,085 A
• Filed: 08/02/1971
• Issued: 10/23/1973
• Est. Priority Date: 08/02/1971
• Status: Expired due to Term

• Current Assignee: James L. Cannon, Richard S. Kinsey
• Original Assignee: James L. Cannon, Richard S. Kinsey
• Inventors: Cannon, James L., Kinsey, Richard S.
• Primary Examiner(s): Reeves, Robert B.
• Assistant Examiner(s): Martin, Larry
• Application Number:
  US05/168,056
• Time in Patent Office: 813 Days
• Field of Search: 222/82,86,88,136,137,145,325,326,327,386-391,333,413 259/7 184/15A 239/142,427,432 215/DIG.1
• US Class Current: 222/82
• CPC Class Codes: A61C 5/64 for multi-component compositions
• CPC Class Codes: A61C 9/0026 Syringes or guns for injecting impression material; Mixing impression material for immediate use
• CPC Class Codes: B01F 2101/2305 Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
• CPC Class Codes: B01F 33/5011 portable during use, e.g. hand-held
• CPC Class Codes: B01F 35/32005 Type of drive
• CPC Class Codes: B01F 35/32025 Battery driven
• CPC Class Codes: B05C 17/00513 of the thread type
• CPC Class Codes: B05C 17/00566 with a dynamic mixer in the nozzle
• CPC Class Codes: B05C 17/00593 Hand tools of the syringe type

Abstract

A double barrel carpule type syringe having, at its discharge end, a common mixing and dispensing chamber provided with a rotary agitator driven from a motor on the syringe. One barrel of the carpule contains an elastomeric base material and the other an accelerator, therefor. The syringe has a double plunger by means of which the base material and the accelerator are simultaneously discharged into the chamber in prescribed proportions as the mixed material is discharged from the end of the chamber. The mixing chamber assembly and the carpule assembly are readily removable from the body of the syringe.

Claims

1. A mixing syringe comprising a syringe body including a pair of body members, a hinge disposed along and joining the sides of said members, said members forming a cradle and a cover, said cover being movable in an arcuate path to and away from said cradle, the inside surfaces of said members each including a pair of concave surfaces joined along a common convex central ridge extending longitudinally of said member, a carpule received between said members, said carpule including a pair of hollow, cylindrical parallel disposed barrels open at both ends, a partition joining said barrels for maintaining the same in their parallel relationship, a cap at one end of said body mounted on one body member, a transversely extending plate mounted on said one body member at the opposite end thereof from said cap, the distance between said handle and said cap being approximately the length of said carpule, said plate extending outwardly of said one member on both sides thereof, a plunger including a pair of spaced parallel slidable pistons carried by said plate, a handle joining the outer ends of said pistons so as to maintain the same in parallel relationship, said carpules including a pair of plugs in the ends of both of said cylinders and a fluid material within said carpule cylinders, a pair of said plugs being disposed adjacent said pistons when said carpule is installed in said one member and being movable towards the other plugs of said cylinders when said plunger is pushed inwardly of said one member, a removable nozzle assembly mounted on said cap, a collar on said cap for maintaining said nozzle assembly in position on said cap, said nozzle assembly including a mixing tube, an agitator withIn said mixing tube, said agitator including a shaft disposed along the axis of said tube and agitator members extending from said shaft, a spider within the distal end of said mixing tube receiving one end of said shaft, a journal block within the other end of said mixing tube, said shaft extending through said journal block and therebeyond, said shaft terminating in the splined end, said journal block and the proximal end of said mixing tube being retained in place by said collar, a pair of eduction tubes on opposite sides of said shaft and extending from said journal block, said journal block being provided with a pair of passageways communicating with said eduction tubes, respectively, and also communicating with the proximal end of said mixing tube, said eduction tubes extending parallel to each other and terminating in pointed ends, said cap being provided with passageways, said passageways receiving said eduction tubes when said nozzle assembly is mounted on said cap, said eduction tubes being of sufficient length that they penetrate through the plugs in the ends of said cylinders when said carpule is installed in said one member and when said nozzle assembly is installed on said cap, a gear train within said cap, said gear train receiving the splined end of said shaft when said nozzle assembly is mounted on said cap, said mixing tube being provided at its distal end with an opening through which a mixture of the fluid materials contained in said carpule which are fed through said eduction tubes and said passageways in this mixing tube are discharged therefrom, a motor within said body for driving said gear train, and detent means for maintaining said body members in a closed position around said carpule.