Thighbone and tibia gap balance dilator with pressure sensor

A pressure sensor and spreader technology, applied in the field of medical devices, can solve the problems of inaccurate surgery, insufficient fine control, and affecting the recovery of patients, and achieve the effect of intuitive data reading and convenient use

Pending Publication Date: 2021-06-15
山东良医医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary space spreaders generally only have the function of spreading, but not the function of measuring. When using the space spreader, it is easy to produce uneven distance between the left and right, and it is easy to cause inaccurate surgery. Although some spreaders are currently The distance of distraction was quantified, and the distance scale was marked on the ...

Method used

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  • Thighbone and tibia gap balance dilator with pressure sensor
  • Thighbone and tibia gap balance dilator with pressure sensor
  • Thighbone and tibia gap balance dilator with pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to Figure 1-Figure 3 , a femoro-tibial gap balance spreader with a pressure sensor, comprising a first handle 1, a measuring rod 2, a second handle 3, a coil spring 9, a fixing rod 10, a pressure sensor 12 and a digital display 13, the measuring rod 2 Installed between the first handle 1 and the second handle 3, the middle front part of the first handle 1, the middle front part of the measuring rod 2 and the front end of the second handle 3 are hinged by the hinge shaft 4, and the front end of the first handle 1 is integrated A square first support plate 5 is processed, and a square second support plate 6 is integrally processed at the front end of the measuring rod 2. Pattern lines are processed on the outer surfaces of the first support plate 5 and the second support plate 6 for increasing The friction force at the contact point enhances the stability of the support. A groove is processed on the inner wall of the second handle 3. The pressure sensor 12 is insta...

Embodiment 2

[0035] refer to Figure 2-Figure 4 , a balanced femoral and tibial space spreader with a pressure sensor, which is basically the same in structure as the balanced femoral and tibial space spreader with a pressure sensor in Embodiment 1, the difference is that in this embodiment The front end of the first handle 1 is integrally processed with a circular first support plate 5, and the front end of the measuring rod 2 is integrally processed with a circular second support plate 6, on the outer surfaces of the first support plate 5 and the second support plate 6 Processed with patterned lines to increase the friction at the contact point and enhance the stability of the support.

Embodiment 3

[0037] refer to Figure 5 , a femoro-tibial gap balance spreader with a pressure sensor, comprising a first handle 1, a measuring rod 2, a second handle 3, a coil spring 9, a fixing rod 10, a measuring plate 7 and a spring guide rod 8, the measuring rod 2 Installed between the first handle 1 and the second handle 3, the middle front part of the first handle 1, the middle front part of the measuring rod 2 and the front end of the second handle 3 are hinged by the hinge shaft 4, and the front end of the first handle 1 is integrated A square first support plate 5 is processed, and a square second support plate 6 is integrally processed at the front end of the measuring rod 2. Pattern lines are processed on the outer surfaces of the first support plate 5 and the second support plate 6 for increasing The frictional force at the contact point enhances the stability of the support. One end of the spring guide rod 8 is fixedly connected to the inner side of the second handle 3. The ot...

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PUM

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Abstract

The invention discloses a thighbone and tibia gap balance dilator with a pressure sensor, and relates to the technical field of medical instruments. The thighbone and tibia gap balance dilator comprises a first handle, a measuring rod, a second handle, a spiral spring, a fixing rod, the pressure sensor and a digital display meter, the first handle, the measuring rod and the second handle are hinged through a hinge shaft, a first supporting plate is arranged at the front end of the first handle, a second supporting plate is arranged at the front end of the measuring rod, a groove is formed in the inner side wall of the second handle, the pressure sensor is detachably arranged in the groove, one end of the spiral spring abuts against the pressure sensor, the other end of the spiral spring abuts against the tail end of the measuring rod, one end of the fixing rod is hinged to the rear end of the first handle, sawteeth engaged with the tail end of the second handle are arranged on the inner side of the fixing rod, the digital display meter is detachably arranged at the rear end of the measuring rod, and the pressure sensor is electrically connected with the digital display meter. The thighbone and tibia gap balance dilator can simultaneously indicate thighbone and tibia dilating distance, angle and surface pressure, is intuitive in data reading and convenient to use, and can be repeatedly disinfected and used.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a femoral and tibial gap balance spreader with a pressure sensor. Background technique [0002] Due to advanced degenerative osteoarthritis, rheumatoid arthritis, ankylosing spondylitis and other diseases, the cartilage of the knee joint will be destroyed, causing ligament imbalance, abnormal force line of the lower limbs, and limited flexion and extension activities. In order to restore the function of the lower limbs , total knee replacement surgery is required. During the operation, it is necessary to ensure the balance of flexion and extension of the reconstructed knee joint space. Only by internal and external balance can the artificial joint obtain better early stability. It is necessary to evaluate the symmetry of the flexion and extension gap and the Whether the tension on the medial and lateral ligaments is balanced. Excessive imbalance will accelerate the wear o...

Claims

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Application Information

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IPC IPC(8): A61B17/02
CPCA61B17/025A61B2017/0268
Inventor 康立新李政玲丁建建李海军魏莹
Owner 山东良医医疗器械有限公司
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