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Wireless portable force line track measuring system in unicondylar knee replacement

A technology of knee joint replacement and measurement system, which is applied in the field of force line trajectory measurement system in wireless portable unicompartmental knee replacement, can solve the problems of low system integration and high power consumption, and achieve high system integration and low system power consumption. Low, small size effect

Pending Publication Date: 2021-04-16
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, its disadvantages are low system integration, high power consumption, and there is still room for improvement in speed and accuracy.

Method used

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  • Wireless portable force line track measuring system in unicondylar knee replacement
  • Wireless portable force line track measuring system in unicondylar knee replacement
  • Wireless portable force line track measuring system in unicondylar knee replacement

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Embodiment Construction

[0060] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0061] Such as figure 1 As shown, based on the experience of the surgeon, a good force trajectory is smooth and centered on the prosthetic spacer, such as in the safety zone shown. Poor force trajectories with pronounced bending and vibration or offset to the prosthetic spacer edge are due to improper material or improper placement of the prosthesis. The safe zone of the trajectory covers the middle area, which is about 10 mm high and is about 5 mm away from the upper and lower borders of the prosthetic spacers, respectively.

[0062] Such as figure 2 As shown, the system consists of two parts: the first part is the data acquisition and processing and wireless transmission module, which mainly includes sensor arrays, analog-to-digital converters, multiplexing switches, algorithm hardware implementation circuits, system-in-package chips and am...

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Abstract

The invention relates to a wireless portable surgery force line track measuring system in unicondylar knee replacement, which is mainly composed of two parts, one part is a data acquisition, processing and wireless sending module, and the other part is a data receiving and real-time display module. The data acquisition, processing and wireless sending module mainly comprises a customized pressure sensor array, an analog-to-digital converter, a multi-channel analog switch, an algorithm hardware implementation circuit and a system-in-package chip made based on a special control logic and interface chip and a radio frequency transmitting chip. A force line track measuring algorithm comprises a pressure maximum point coordinate determination algorithm based on least square fitting and trajectory fitting. The force line track generated by the distal end of the femoral prosthesis on the prosthesis gasket shell in the unicondylar knee replacement surgery can be measured in real time, so that whether the prosthesis position is proper or not is judged.

Description

technical field [0001] The invention belongs to the technical field of medical electronics and electronic system integration, in particular to a wireless portable force line trajectory measurement system in unicondylar knee replacement. Background technique [0002] Long-term pressure on the knee joint can easily lead to wear and injury, and in severe cases, it may develop into osteoarthritis. The number of patients with knee arthritis is expected to increase exponentially over the next few decades. The most common surgical treatments for the knee include total knee arthroplasty (TKA), high tibial osteotomy (HTO), and unicondylar knee arthroplasty (UKA). According to statistics, by 2035, more than 3 million knee replacement surgeries may be performed globally each year. Compared with total knee replacement surgery, unicompartmental knee replacement surgery is a minimally invasive surgery, so it has more bone and tissue protection, and can usually be performed with less inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/46A61F2/38
Inventor 陈虹苏哲朱斌杰
Owner TSINGHUA UNIV
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