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Syringe drive assembly

  • US 4,833,384 A
  • Filed: 07/20/1987
  • Issued: 05/23/1989
  • Est. Priority Date: 07/20/1987
  • Status: Expired due to Fees
First Claim
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1. A syringe drive assembly comprising:

  • a base having a linear bearing surface thereon;

    a syringe having a body supported on said base adjacent and substantially parallel to said bearing surface and a plunger moveable within said body;

    a linear drive screw supported on said base, substantially parallel to said body and coupled to said plunger by a support shaft, said support shaft having a bearing mounted thereon and adapted to move on said bearing surface to stabilize said plunger during linear movement thereof;

    motor means having an output shaft coupled to said linear drive screw; and

    sensing means associated with said output shaft of said motor means for sensing the position of said support shaft.

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