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Front loading medical injector and syringe for use therewith

  • US 5,741,232 A
  • Filed: 12/23/1996
  • Issued: 04/21/1998
  • Est. Priority Date: 08/17/1992
  • Status: Expired due to Fees
First Claim
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1. An injector for injecting a liquid from a syringe, said syringe including a plunger, said injector comprising:

  • a housing having a front wall;

    readily releasable mounting means on said housing front wall for supporting the syringe for an injection operation, said readily releasable mounting means including retaining means for releasably engaging a retaining portion on the syringe;

    drive means in said housing movable through said housing front wall for controlling the movement of the plunger in the syringe;

    a tubular pressure jacket having a rearward end mounted on the front wall of said housing and having a forward open end for receiving the syringe therethrough for connection of the syringe plunger to said drive means;

    said retaining means of said readily releasable mounting means being on said pressure jacket adjacent the forward open end thereof, with said retaining portion on the syringe also being adjacent a forward end thereof;

    wherein said pressure jacket includes inner slotted means for receiving said retaining portion on the syringe therethrough, so that said syringe retaining portion and an inner surface of said retaining means on said pressure jacket can be engaged upon rotation of the syringe in said pressure jacket; and

    stop means for preventing over-rotation of the syringe as the syringe is rotated into a mounted position.

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