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Thighbone-side prosthesis implantation limiting measurer in hip replacement and use method thereof

A technology for hip replacement and measuring device, which is applied to hip joints, joint implants, joint implants, etc., can solve the problems of unequal length of the two lower limbs, difficulty in the length of the two lower limbs, and high expectations, and achieve accurate double lower limbs. The effect of unequal length, reducing the unequal length of both lower extremities and avoiding surgical errors

Pending Publication Date: 2021-10-29
晋江市医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The incidence of femoral neck fractures in the elderly continues to rise, accounting for 10.6% of all fractures over the age of 60, and the highest proportion is in the age group of 76-80. Hip replacement for displaced femoral neck fractures in the elderly can relieve pain and quickly restore the hip joint Significant results have been achieved in terms of function, and it has become the main method of treatment. However, unequal lengths of the lower limbs after hip replacement are more common, which can lead to lameness, low back pain, scoliosis, and loose prosthesis. If the unequal length of the lower limbs exceeds 10mm after operation, the improvement of rehabilitation exercise function is limited, which is the main reason for the poor function after hip replacement. Due to the destruction of anatomical landmarks caused by fractures, the evaluation of the length of the lower limbs before and during the operation It is difficult to restore the full length of the lower limbs. It is a challenge for the surgeon, and because each doctor's technique and experience are different, there will be errors, which will have a certain impact on the unequal length of the lower limbs after the operation. In addition, The function of the hip joint is usually good before the fracture in these patients, so the expectations are often higher

Method used

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  • Thighbone-side prosthesis implantation limiting measurer in hip replacement and use method thereof
  • Thighbone-side prosthesis implantation limiting measurer in hip replacement and use method thereof
  • Thighbone-side prosthesis implantation limiting measurer in hip replacement and use method thereof

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Effect test

Embodiment 1

[0035] Such as Figure 1 to Figure 6 As shown, the femoral side prosthesis in the hip joint replacement of the present invention is placed into a limit measuring device, including a limit measuring block 1 and a fixing mechanism, and the fixing mechanism is used to fix the limit measuring block 1 on On the greater trochanter 31 of the femur 3, when the presser 4 drives the prosthesis 6, the limit measuring block 1 can limit the position of the presser 4 and make the presser 4 Drive the prosthesis 6 into the preset position.

[0036] The inventor of this patent found in several cases of total hip replacement or hemihip replacement in clinical operations that the "shoulder-to-shoulder" intraoperative anatomical alignment method of the 3 sides of the femur is to align the "shoulder" of the prosthesis 6 with the The "shoulder" anastomosis of femur 3 restores the patient's anatomy before the fracture, so as to achieve the patient's inherent anatomical alignment relationship. In mo...

Embodiment 2

[0045] Such as Figure 7 to Figure 11 As shown, the difference between this embodiment and Embodiment 1 is that the clamping assembly includes a first pliers 241 and a second pliers 242, the first pliers 241 and the second pliers 242 are rotatably connected, The first pliers 241 includes a first pliers head 2411 and a first pliers handle 2412, the second pliers 242 includes a second pliers head 2421 and a second pliers handle 2422, and the second pliers head 2421 is fixed on On the fixed block 21, a locking rod 243 is provided between the first pliers handle 2412 and the second pliers handle 2422, and one end of the locking rod 243 is rotatably connected to the first pliers handle 2412, The other end of the locking rod 243 passes through the connection hole on the second pliers handle 2422 and is threaded with a knob nut 244. The end of the first pliers head 2411 is flat and pointed. By adopting this structure When in use, the first forceps head 2411 can be inserted into the ...

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Abstract

The invention relates to the technical field of hip replacement medical instruments, in particular to a thighbone side prosthesis implantation limiting measurer in hip replacement and a use method thereof. The thighbone side prosthesis implantation limiting measurer is characterized by comprising a limiting measuring block and a fixing mechanism, the fixing mechanism is used for fixing the limiting measuring block to greater trochanter of a thighbone, and in the process that a pressing device is used for punching the prosthesis, the limiting measuring block can play a role in limiting the pressing device and enables the pressing device to punch the prosthesis to a preset position. The limiting measurer is simple and practical in overall structure, convenient to use and capable of simply, effectively and accurately reducing the unequal lengths of the two lower limbs after the operation, and therefore it is guaranteed that a patient obtains the satisfactory lengths of the two lower limbs after the operation.

Description

technical field [0001] The invention relates to the technical field of hip joint replacement medical devices, in particular to a measuring device for placing a femoral side prosthesis in hip joint replacement and a use method thereof. Background technique [0002] The incidence of femoral neck fractures in the elderly continues to rise, accounting for 10.6% of all fractures over the age of 60, and the highest proportion is in the age group of 76-80. Hip replacement for displaced femoral neck fractures in the elderly can relieve pain and quickly restore the hip joint Significant results have been achieved in terms of function, and it has become the main method of treatment. However, unequal lengths of the lower limbs after hip replacement are more common, which can lead to lameness, low back pain, scoliosis, and loose prosthesis. If the unequal length of the lower limbs exceeds 10mm after operation, the improvement of rehabilitation exercise function is limited, which is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/4607A61F2/4657A61F2002/4662A61F2002/4658
Inventor 张金山郑勇强许永权方阳振黄少华
Owner 晋江市医院
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