Hydraulic valve

US9993355B2 · kind B2 · utility

Assignee

• Otto Bock Healthcare LP · DE

Inventors

• Richard Geiger · Fremont, US
• David R. Kraige · State College, US
• Jeremy Frank · San Francisco, US
• Jacob J. Loverich · State College, US
• Ben Gilbert Macomber · Shoreline, US
• Adam Arabian · Silverdale, US

Key dates

• Filing date: Mar 14, 2014
• Grant date: Jun 12, 2018
• Expiry date: Oct 6, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/877
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A valve includes a case comprising a pin bore, a pin configured to move axially in the pin bore, wherein the pin seals the pin bore, a first channel in communication with the pin bore, a second channel in communication with the pin bore, wherein the second channel comprises a restrictor at a location offset from the first channel, a third channel in communication with the pin bore, wherein the third channel comprises a check valve, and the second channel and third channel are in communication with each other. The valve can be a miniature valve that is used in the control of hydraulic fluid in prosthesis, such as a prosthetic ankle joint.