Supine-position knee joint pressure simulation device

Abstract

The invention provides a supine-position knee joint pressure simulation device. According to the invention, double lower limbs of a patient are placed on a bottom plate; the end part of a tension device is fixed; a tension adjusting device is adjusted and combined with a pressure measuring device to control the pressure of a pressure plate; the generated pressure is equal to the pressure generatedby the weight of a patient to knee joints in a standing state, the pressure is applied to the soles of the patient through the supporting plate, the supine knee joint pressure simulation is completed, then X-ray films are shot, and the double-lower-limb full-length X-ray films of the patient in a load bearing state can be obtained. According to the supine-position knee joint pressure simulation device, the pressure of the pressure plate is horizontally adjusted, the pressure is monitored through a tension and compression sensor; the pressure of the weight of a patient on knee joints is simulated, the load bearing state of the two lower limbs of the patient in a supine position is simulated, which solves the problem that existing equipment cannot shoot the full-length X-ray films of the two lower limbs of the patient in the load bearing state, the device provides a correct guidance method for a lower limb operation, and is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a supine position knee joint pressure simulation device. Background technique [0002] Major surgeries such as total knee arthroplasty, unicompartmental arthroplasty, and osteotomy around the knee joint have high requirements for the correct judgment of the lower limb alignment. line, thus guiding doctors to choose different surgical methods. [0003] At present, most hospitals use non-full-length or supine X-ray films to formulate surgical plans, which can not reflect the patient's real line of force, but also cover up the deformity or abnormal line of force caused by the imbalance of soft tissues around the knee joint. Weight-bearing full-length radiographs of the lower extremities are particularly important for major surgeries such as joint replacements and osteotomies around the knee. In other words, the images of the lower limbs in the X-ray film must meet the two conditions...

AI Technical Summary

Problems solved by technology

[0005] In view of the difficulty in taking full-field weight-bearing X-ray images of both lower limbs in the prior art, the present invention provides a knee joint pressure simulation device in the supine position, which can monitor the knee joint pressure when CT is used to scan the full-length images of the lower limbs in the prone position. Apply a certain pressure so that the scanned X-ray film can show the real lower limb force line of the patient's lower limbs, and provide guidance for the operation

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