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Patient-fillable and non-invasive hypodermic injection device assembly

  • US 4,940,460 A
  • Filed: 12/12/1988
  • Issued: 07/10/1990
  • Est. Priority Date: 06/19/1987
  • Status: Expired due to Term
First Claim
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1. A hypodermic syringe comprising:

  • an ampule body having a plunger end and an orifice end, said body having a generally elongate cylindrical form with an outer wall of predetermined diameter and an inner wall defining a medication retaining cavity, a flange which is a continuation of said inner wall which is located at said orifice end and extends axially outward therefrom, said flange having an outer wall which is located intermediate said body inner wall and said body outer wall;

    an elongate plunger, one end thereof having a seal-carrying groove formed about the periphery thereof and being received in said medication retaining cavity with a seal received in said groove;

    an orifice-bearing end cap fixed to said orifice end, said end cap having a generally cylindrical form including a medication-receiving portion extending axially into said medication retaining cavity at one end thereof, said end cap having a groove extending about said medication-receiving portion at the base thereof, said groove being conformal with said flange on said body;

    a truncated hypodermic needle received in said end cap and having a channel extending therethrough, said channel communicating with the narrower end of said bore;

    a filling needle having connecting means thereon; and

    a removable external fill adaptor having a receptacle on one end thereof for receiving said end cap therein and a bore extending therethrough, said bore being aligned with said truncated hypodermic needle on said end cap, means on the other end of said adaptor cooperating with said connecting means for securing said filling needle to said adaptor.

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