×

Electrotransport delivery device having improved safety and reduced abuse potential

  • US 7,027,859 B1
  • Filed: 09/26/1994
  • Issued: 04/11/2006
  • Est. Priority Date: 09/26/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrotransport device for delivering a therapeutic agent, comprising:

  • a power source;

    first and second electrodes and reservoirs, wherein at least one of the reservoirs contains the therapeutic agent;

    a current generating circuit;

    a current controlling circuit;

    a current enabling circuit;

    a current disabling circuit adapted to automatically, permanently and irreversibly disable the current generating circuit upon occurrence of a predetermined event, thereby discontinuing electrotransportation of the agent from the device, said current disabling circuit including a timer circuit, wherein said predetermined event is the expiration of a period of time establishing by said timer circuit; and

    a current discharging circuit including a silicon controlled rectifier or a field effect transistor.

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