For transmitting the pen type needle assembly of drug solution

For transmitting the pen type needle assembly of drug solution

  • CN 102,413,858 B
  • Filed: 03/03/2010
  • Issued: 03/01/2017
  • Est. Priority Date: 03/03/2009
  • Status: Active Grant
First Claim
Patent Images

1. a kind of pen type needle assembly, described pen type needle assembly includes:

  • Needle stand, this needle stand limits the main body of cylindricality, and this main body has unlimited near-end and the far-end of closure;

    AndIt is fixed to the syringe needle of described needle stand, described syringe needle has near-end and described pin proximally and distally and in described syringe needleThe inner chamber extending between the far-end of head;

    Wherein, described syringe needle from described needle stand towards distal extension with limit the described far-end of described syringe needle and described needle stand itBetween 5.0mm to 9.0mm exposed length;

    Wherein, described needle stand limits the post being formed around described syringe needle, and described post has the first skin engagement face facing distally,The described exposed length of described syringe needle faces distal extension from described first skin engagement;

    AndWherein, the Second Skin composition surface that described needle stand qualified surface is stretched out towards distally from the far-end of described main body, described secondSkin engagement face is located at the nearside in described first skin engagement face,Wherein, described first skin engagement face terminates at the first diameter, and described Second Skin composition surface limits Second bobbin diameter simultaneouslyBe limited on a series of wings, a series of described wings from described post to external radiation and at terminating at described Second bobbin diameter, describedThe ratio of one diameter and described Second bobbin diameter is between 0.25-0.58.

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