×

Dosage form comprising hydrophilic polymer

  • US 5,830,501 A
  • Filed: 10/21/1992
  • Issued: 11/03/1998
  • Est. Priority Date: 12/06/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A dosage form for administering a drug to a patient, wherein the dosage form comprises:

  • (1) a wall comprising a semipermeable composition, which wall defines a compartment;

    (2) 10 ng to 1200 mg of drug in the compartment;

    (3) a push composition in the compartment for pushing the drug from the dosage form;

    (4) at least one exit port in the dosage form for delivering the drug from the dosage form; and

    wherein the dosage form is characterized by the compartment comprising;

    (5) 15 wt % to 60 wt % of a hydrophilic polymer that precipitates in situ in the presence of fluid that enters the compartment and means for causing the hydrophilic polymer to precipitate comprising the drug whereby the dosage form, administers the drug to the patient.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×