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Intradermal drug delivery device and method for intradermal delivery of drugs

  • US 5,848,991 A
  • Filed: 04/25/1997
  • Issued: 12/15/1998
  • Est. Priority Date: 12/13/1990
  • Status: Expired due to Term
First Claim
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1. An intradermal drug delivery device for delivering a liquid drug to a subject via the subject'"'"'s skin, comprising:

  • (a) a housing having a lower surface for application to the skin of the subject;

    (b) means for affixing the housing in position with the lower surface in contact with the subject'"'"'s skin;

    (c) a plurality of drug reservoirs within the housing;

    (d) an outlet cavity in communication with the plurality of drug reservoirs;

    (e) a single hollow needle associated with the outlet cavity extending through the lower surface, having an inner end communicating with the outlet cavity and an outer end projecting outwards a sufficient distance so as to penetrate through the epidermis and into the dermis when the housing is pressed against the skin; and

    (f) means for actively discharging the drug from the drug reservoir to the subject'"'"'s skin via the needle;

    wherein the lower surface is shaped such that when it is pressed against the skin a substantial proportion of the pressure applied to the skin is directed through the outer end of the needle.

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