| CPC A61F 2/748 (2021.08) [A61F 2002/5006 (2013.01); A61F 2002/6854 (2013.01)] | 21 Claims |
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11. A locking device to control movement of a prosthetic joint or an orthotic joint, comprising:
a hydraulic damper having a movable damper wall in a hydraulic housing of the hydraulic damper, wherein the movable damper wall forms a first chamber and second chamber in the hydraulic damper;
a revolute joint for a prosthetic limb that is formed using the movable damper wall in the hydraulic housing;
a first fluid channel coupled to the first chamber;
a magnetic latch in fluid communication with the first fluid channel and having a fixed magnet to hold a sense piston in an open position when pressure is reduced in the first chamber;
a poppet valve configured to set a latch in an open position when pressure is reduced in the first chamber and to stop fluid movement between the first chamber and the second chamber when pressure is increased in the first chamber; and
a second fluid channel in fluid communication between the second chamber and the latch, wherein the second fluid channel enables fluid to flow between the second chamber and the latch.
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