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Fitments for injection devices

  • US 4,507,118 A
  • Filed: 07/01/1983
  • Issued: 03/26/1985
  • Est. Priority Date: 07/29/1980
  • Status: Expired due to Fees
First Claim
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1. A sterilising fitment for an injection device of the kind in which injection liquid is delivered through a hollow needle, the fitment being provided to sterilise the needle prior to its application to the site of injection and again on withdrawal of the needle from the site of injection, which fitment comprises a collapsible sleeve for surrounding the needle, means at one end of the sleeve for attaching the sleeve to a needle support of the injection device, and a sterilising substance holder releasably carried by the other end of the sleeve to close off said other end so as to enclose the needle, the holder comprising an enclosure containing sterilising means, and the two ends of the collapsible sleeve being reciprocable relative to one another in the direction of the length of the needle and being resiliently biased in the extended position, whereby, in use, when an injection is effected by placing said other end of the sleeve against the injection site and applying pressure to the injection device in a direction towards the injection site, the point of the needle moves through the sterilising means within the enclosure into the injection site as the sleeve collapses under the applied pressure and subsequently moves back into the sleeve through the sterilising means as the sleeve reassumes its extended position on release of said pressure, and the holder may subsequently be replaced on said other end of the sleeve by a holder containing fresh sterilising means.

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