Knee joint replacement gap balance measurement system, preparation method and measurement method

Abstract

The invention relates to a knee joint replacement gap balance measuring system, a preparation method and a measuring method.The knee joint replacement gap balance measuring system comprises an ionization type capacitance pressure sensing array gasket module, a capacitance array signal collecting and processing module and a knee joint two-side pressure distribution display module; an electrode array unit of the ionizing capacitance pressure sensing array gasket module comprises a plurality of ionizing capacitance pressure sensing electrodes which are distributed on the inner side and the outer side of knee joint soft tissue in an array mode and is provided with an ionic gel dielectric layer. The capacitor array signal collecting and processing module is connected with the ionization type capacitor pressure sensing array gasket module and the knee joint two-side pressure distribution display module. The preparation method comprises the step of preparing the ionizing capacitive pressure sensing array gasket module. The measuring method comprises the steps of collecting capacitor array data at different angles, and sending the data to the knee joint two-side pressure distribution display module through signal amplification and digital-to-analog conversion. Accurate evaluation can be provided for pressure distribution measurement on the two sides of the knee joint in an operation.

Description

technical field [0001] The invention relates to the technical field of biological and pressure balance measurement, in particular to a knee joint replacement gap balance measurement system, a preparation method and a measurement method. Background technique [0002] Knee osteoarthritis (OA) is a common chronic degenerative joint disease. Total knee arthroplasty (TKA) is the first choice for surgical treatment for patients with moderate-to-advanced severe osteoarthropathy. TKA surgery can effectively relieve pain and improve knee function in patients with osteoarthritis. [0003] Soft tissue balance and lower extremity alignment are the two most important technical links in TKA surgery. Compared with the correction of lower extremity alignment, there is still a lack of accurate quantitative judgment methods for intraoperative soft tissue balance of the knee joint. Soft tissue imbalances can lead to knee pain, functional limitation, joint instability, prosthesis loosening, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a knee replacement gap balance measurement system, preparation method and measurement method to solve the problem of inaccurate measurement of local pressure on the contact surface of the knee joint in the prior art

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