Invention Grant
- Patent Title: Prosthetic ankle joint mechanism
- Patent Title (中): 假腿踝关节机制
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Application No.: US14051775Application Date: 2013-10-11
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Publication No.: US09433513B2Publication Date: 2016-09-06
- Inventor: David Moser , Fadi Abimosleh , Mir Saeed Zahedi , Graham Harris , Stephen Terry Lang , Andrew John Sykes
- Applicant: Blatchford Products Limited
- Applicant Address: GB Hampshire
- Assignee: Blatchford Products Limited
- Current Assignee: Blatchford Products Limited
- Current Assignee Address: GB Hampshire
- Agency: Alston & Bird LLP
- Main IPC: A61F2/64
- IPC: A61F2/64 ; A61F2/66 ; A61F2/68 ; A61F2/50 ; A61F2/74 ; A61F2/30 ; A61F2/70

Abstract:
A prosthetic foot and ankle assembly includes a foot component and an ankle joint mounted thereto and having a fixed range of dorsi-plantar flexion. The ankle joint includes a joint mechanism in the form of a hydraulic linear piston and cylinder assembly having a pair of chambers on opposite sides of the piston to provide hydraulic damping continuously over the range of dorsi-plantar flexion. The joint mechanism further includes a valve arrangement controlling the flow of hydraulic fluid between the chambers. The valve arrangement includes first and second adjustable valves for independently controlling dorsi-flexion damping resistance and plantar-flexion damping resistance respectively. The joint mechanism includes a first flexion limiter that limits dorsi-flexion of the joint mechanism to a dorsi-flexion limit and a second flexion limiter that limits plantar-flexion of the joint mechanism to a plantar-flexion limit, thereby defining the fixed range of dorsi-plantar flexion.
Public/Granted literature
- US20140039645A1 Prosthetic Ankle Joint Mechanism Public/Granted day:2014-02-06
Information query
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