The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1981
Filed:
Jul. 22, 1980
Frank D Dorman, Minneapolis, MN (US);
Thomas D Rohde, Minneapolis, MN (US);
Thomas G Rublein, Minneapolis, MN (US);
The Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
A method of preventing the precipitation of hormone preparations within drug delivery systems that depend on the fluidity of the infusate for proper function. A non-toxic water soluble detergent is dissolved in the hormone solution prior to the introduction of the solution into the drug delivery system. The detergent is added in amount sufficient to prevent precipitation of the hormone during long-term storage in the drug delivery device. According to one form of usage, the hormone-detergent solution is charged to the pressurized drug storage chamber of an implanted infusion pump by injection through the patient's skin. As the solution is discharged from the delivery device by the constant pressure exerted upon the storage chamber, its low rate of flow is controlled by a restricted fluid passage. The solution is conveyed to an infusion site and diluted by the blood stream.