×

Analyte-controlled liquid delivery device and analyte monitor

  • US 5,800,420 A
  • Filed: 12/19/1996
  • Issued: 09/01/1998
  • Est. Priority Date: 11/04/1994
  • Status: Expired due to Fees
First Claim
Patent Images

1. A liquid delivery device for delivering a liquid drug to a subject via the subject'"'"'s skin at a rate sufficient to maintain levels of an analyte within a physiologically acceptable range, comprising:

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

    means for holding the housing in position with the lower surface against the subject'"'"'s skin;

    a drug reservoir within the housing;

    a hollow delivery needle associated with the drug reservoir extending through the lower surface when the lower surface is in contact with the subject'"'"'s skin, having an inner end communicating with the drug reservoir 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;

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

    means for intermittently detecting the concentration of an analyte in the subject plasma and for providing an electrical signal in accordance with the detected concentration, the concentration of said analyte being directly or indirectly related to the amount of drug required by the subject; and

    means for receiving said electrical signal and for controlling the rate of active discharge of drug in response thereto.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×