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Automatic injection apparatus

  • US 4,515,590 A
  • Filed: 02/03/1983
  • Issued: 05/07/1985
  • Est. Priority Date: 02/16/1982
  • Status: Expired due to Fees
First Claim
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1. An automatic injection apparatus, comprisinga housing formed by a plurality of walls,one of said walls extending obliquely and constituting an injection wall,a aperture formed in said injection wall,a syringe disposed within said housing,an injection needle disposed on one end of said syringe,a support disposed within said housing upon which said syringe is tightly mounted and adapted to slide therealong, so that said needle protrudes through said aperture,means for introducing injection fluid into said syringe,a two-way, fluid-actuated, double action piston coupled to said syringe for moving the latter in both a forward and a backward direction along said support,means for fluidly connecting said piston to a source of fluid under pressure, said fluid connecting means includingmeans for introducing pressurized fluid on one side of said piston, to cause the same and said syringe to move in the forward direction, andmeans for introducing pressurized fluid on another side of said piston to cause the same and said syringe to move in the backward direction.

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