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Subcutaneous injection set with crimp-free soft cannula

  • US 5,257,980 A
  • Filed: 04/05/1993
  • Issued: 11/02/1993
  • Est. Priority Date: 04/05/1993
  • Status: Expired due to Term
First Claim
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1. A subcutaneous injection set, comprising:

  • housing means defining an internal chamber adapted for receiving a selected infusion fluid, said housing means further defining an outlet bore;

    a soft cannula mounted generally within said outlet bore and protruding outwardly from said housing, said cannula defining a hollow lumen;

    an insertion needle removably received through said housing chamber and further through said cannula lumen and terminating in a point tip disposed at least slightly beyond said cannula, said insertion needle being withdrawable from said cannula and from said housing subsequent to transcutaneous placement of said cannula through the skin of a patient; and

    means for preventing slippage of said cannula in a direction longitudinally along said insertion needle during transcutaneous placement thereof to correspondingly prevent cannula crimping.

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