Artificial knee joint with a push rod biased to rotate a prosthetic lower leg rapidly to align with a residual thigh
August 18, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProsthetic knee joint Adjustable friction joint for an artificial knee Artificial knee joint Prosthetic brake joint Prosthetic component with pneumatic device for knee articulation Lower limb prosthesis Artificial knee joint assembly capable of maintaining a knee angle between a lower leg and a thigh when the assembly stands on a horizontal or inclined surface Patent #: 6706074 InventorsApplicationNo. 10642220 filed on 08/18/2003US Classes:623/46, Spring623/44, Weight or position responsive623/45, Adjustable friction joint623/26, HAVING FLUID ACTUATOR623/24HAVING ELECTRICAL ACTUATORExaminersPrimary: Snow, BruceAttorney, Agent or FirmInternational ClassesA61F002/64A61F002/68 AbstractAn artificial knee joint includes a joint seat, a support frame, a hydraulic device, a push rod, and a biasing member. The joint seat has a joint body and a rotatable member connected pivotally to the joint body and connected fixedly to a residual thigh. The support frame is connected rotatably to the joint body, and is connected fixedly to a prosthetic lower leg. The push rod is movable relative to the joint body between an extended position, where a free end of the rotatable member is spaced apart from the joint body to align the lower leg with the thigh, and a retracted position, where the free end of the rotatable member abuts against the joint body. The biasing member biases the push rod to the extended position. | |
