System and method for measuring pressure distribution and interval between two bearers

A technology of pressure distribution and force receiving body, applied in the medical field, can solve problems such as low accuracy, achieve low power consumption, and reduce security threats

Active Publication Date: 2008-12-03
SHENZHEN ANKE HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no method and system for quantitatively measuring the force distribution and distance between two force-bearing bodies and adjusting it at the same time. According to the experience of the patient, the accuracy is not high. Although there is also a mechanical tension device to measure the gap between the femoro-tibia in the knee joint, the adjustment of soft tissue balance still needs to be done by the clinician through hand touch, experience and feeling.

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  • System and method for measuring pressure distribution and interval between two bearers
  • System and method for measuring pressure distribution and interval between two bearers
  • System and method for measuring pressure distribution and interval between two bearers

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Embodiment Construction

[0048] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0049] The basic principle of using a force sensor to measure the pressure between two force-bearing bodies is shown in Figure 1a and Figure 1b. Multiple miniature single-point force sensors are fixed on a rigid plate, and each force sensor is within the pressure range it can withstand. The voltage signal output by the sensor has a linear relationship with the pressure on the sensor, that is:

[0050] f=aV+b (Formula 1)

[0051] Among them, V is the voltage output by the sensor, f is the force, a is the slope of the straight line equation, and b is the intercept. Therefore, after the voltage signal V of the force sensor is obtained through measurement, the magnitude of the force f actually loaded on the sensor can be calculated according to formula 1.

[0052] The basic principle of measuring the gap between the two stressed bodies is shown in Figure 2a an...

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Abstract

The system and method for measuring pressure distribution and interval between two bearers is disclosed. The system for medical use includes one front measuring device comprising micro force sensor and angle sensor and set between two bearers to acquire the pressure signal and interval signal between the bearers; and one measurement controlling and signal processing unit for the control of the pressure signal and the interval signal acquisition and the data processing of acquired signals, with the measurement results being shown intuitively. The method makes it possible to measure the pressure distribution intervals between tibia and the femur precisely for the doctor to regulate the interval between the upper plate and the lower plate in the front measuring device directly based on the measured data and to complete the accurate regulation in soft tissue balance inside knee joint.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a system and method for measuring the pressure distribution and the distance between two stressed bodies and adjusting the distance in the medical technology field. Background technique [0002] In the field of modern industry and medical technology, it is often necessary to understand the distribution of tension between the two stressed bodies and the distance between the two stressed bodies, and adjust the distance between the two stressed bodies to achieve tension balance the goal of. For example, in total knee arthroplasty (Total Knee Arthroplasty, TKA) surgery, the alignment of the force line of the lower limbs and soft tissue balance are two key factors in the entire operation, which play a decisive role in improving the life of the artificial joint. The gap between the thigh and the tibia, as well as the force distribution between the femur and the tibia, so as to provid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/22A61B5/00A61F2/76G01D21/02
Inventor 吴剑周志康李修往周华赵明韦启航戴尅戎王友
Owner SHENZHEN ANKE HIGH TECH CO LTD
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