Hydraulic pressure actuator and continuous manual athletic device using the same

A technology of actuating device and fluid pressure, applied in the direction of fluid pressure actuating device, etc., can solve problems such as inner tube damage
CN1764786AInactive Publication Date: 2006-04-26HITACHI MEDICAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HITACHI MEDICAL CORP
Publication Date
2006-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a hydraulic pressure actuator having an inner tube and a mesh sleeve covering the outer periphery of the inner tube and longitudinally extendable by pressure fluid fed into the inner tube, wherein a low friction body formed in an elastic cylindrical body by knitting fine fibers is disposed between the inner tube and the mesh sleeve, and the low friction body contributes to an increase in the life of the hydraulic pressure actuator repeatedly performing extension / retraction motions. The hydraulic pressure actuator is used as an actuator for driving a CPM device which supports the extremity of a human body by at least one of a plurality of members combined with each other and performs the rehabilitation of the joints of a handicapped by operating the member.
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Description

technical field

[0001] The present invention relates to a fluid pressure actuator driven by supply and discharge of fluid such as air, and a continuous passive motion (Continuous Passive Motion: hereinafter referred to as CPM) device using the same. Background technique

[0002] As a fluid pressure type actuator, there is known a fluid pressure type actuator in which the outer circumference of a rubber tube (inner tube) is covered with a net-like covering body (mesh sleeve) made of a non-stretchable resin. device. If the inner tube of the fluid pressure actuator is inflated by supplying air into the inner tube, the diameter of the mesh sleeve increases. The increase of the diameter of the mesh sleeve is due to the fact that the material of the mesh sleeve is not stretchable, so the length of the actuator is reduced. A contraction force (driving force) is obtained accompanying the reduction in length of the actuator.

[0003] The above-mentioned fluid pressure actuator, wh...

Claims

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