Implantable continuous-flow pumps

US11964129B2 · kind B2 · utility

Assignee

• MiniPumps LLC · US

Inventors

• Jason Shih · Yorba Linda, US
• Gregory Harbers · Valencia, US
• Richard E. Purvis · Pasadena, US
• Miho Matsuoka · Rosemead, US
• Andrew Urazaki · Arcadia, US
• Mark Humayun · Glendale, US
• William Andrew Brandt · Castaic, US
• Atoosa Lotfi · Valencia, US
• Didier Sagan · San Diego, US
• Andrew Dunn · Santa Monica, US

Key dates

• Filing date: Mar 1, 2019
• Grant date: Apr 23, 2024
• Expiry date: Apr 28, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2210/0612
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In various embodiments, a drug pump includes a housing and, within the housing, an expandable drug reservoir at least part of which is exposed to a pressurized propellant. The propellant exerts a substantially constant pressure on the drug reservoir. A flow restrictor significantly limits outflow from the pump, and preferably has both a small diameter and a long path length, which acts to control the outflow from the drug reservoir. As a result, the pump produces a substantially constant outflow.