A kind of femoral external rotation osteotomy adjuster

An adjuster and osteotomy technology, which is applied in the field of medical devices for total knee replacement surgery, can solve the problems of lack of adjustment tools, the parallel line and the condyle line cannot be parallel, etc., and the effect is easy to grasp.

Active Publication Date: 2018-11-27
青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome that when the parallel line of the line d calibrated by the calibration tool in the prior art is not parallel to the condylar line, there is no special adjustment tool for adjustment, which requires human eyes to estimate, resulting in The technical defect that the parallel line of the marked line d cannot be parallel to the line through the condyle, so as to provide a kind of adjustment of the femoral external rotation osteotomy that can accurately adjust the parallel line of the above line d, so that the marked line is parallel and consistent with the line through the condyle device

Method used

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  • A kind of femoral external rotation osteotomy adjuster
  • A kind of femoral external rotation osteotomy adjuster
  • A kind of femoral external rotation osteotomy adjuster

Examples

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Effect test

Embodiment 1

[0045] This embodiment provides a femoral external rotation osteotomy adjuster, such as Figure 4 As shown, including a body 10, a pair of reference holes 1 and several pairs of adjustment holes 2, 3, 4, 5, 6, 7 are provided on the body 10, and the distance between the pairs of reference holes 1 is set so that it It is suitable for fitting and fitting on a pair of fixed nails to be adjusted; the reference hole 1 is a long hole, and its length extension direction is perpendicular to the direction of the center line of the pair of fixed nails; paired The distribution direction of the reference holes 1 is perpendicular to the length extension direction, and a pair of adjustment holes 2, 3, 4, 5, 6 with the smallest angular difference between the line connecting the center of the circle and the distribution direction of the pair of reference holes 1, 7. The angle difference between the line connecting the center of the circle and the distribution direction of the reference hole 1 ...

Embodiment 2

[0053] This embodiment provides a method for using a femoral external rotation osteotomy adjuster, refer to Figure 4 shown, including the following steps:

[0054] S1 fit a pair of reference holes 1 on the body 10 onto a pair of fixing nails to be adjusted;

[0055] S2 Move the body 10 along the length extension direction of the reference hole 1 until a pair of angle marks 20 corresponding to a certain pair of adjustment holes 2, 3, 4, 5, 6, 7 are found and simultaneously aligned with the condylar line align both ends of

[0056] S3 Reset new fixing nails at the found positions of the pair of adjustment holes 2, 3, 4, 5, 6, 7.

[0057] The using method of the femoral external rotation osteotomy adjuster in this embodiment can adjust the setting position of the fixing nail when the connection line of the two fixing nails is not parallel to the condylar line, so that the connection line of the fixed fixing nail after adjustment is in line with the condylar line. Through the ...

Embodiment 3

[0063] This embodiment provides a femoral external rotation osteotomy adjuster, which is a deformation on the basis of Embodiment 1, such as Figure 5 As shown, the difference is: it also includes an inclinometer structure, (the inclination angle structure does not set the angle mark 20 on the body 10, but resets the inclination angle structure), and the inclination angle structure is installed on the body 10 for Measure the angle difference between the line through the condyle and the line connecting the centers of the paired reference holes 1.

[0064] The tilt measuring structure includes: a first measuring rod 21, one end of which is rotatably mounted on the body 10, and the other end is a pointer. The number of angles is 11; the second measuring rod 22 is arranged parallel to the first measuring rod 21, and the distance between the first measuring rod 21 and the first measuring rod 21 can be adjusted by adjusting the structure, and has two opposite pointers.

[0065] Whe...

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Abstract

The invention provides a femoral external rotation osteotomy adjuster and a using method thereof, wherein the adjuster comprises a main body; at least one pair of basic holes and multiple pairs of adjusting holes are formed in the main body; the basic holes are strip-shaped holes with length extension direction perpendicular to the direction of a central connecting line of a pair of fixing nails; the distribution direction of the paired basic hole is perpendicular to the length extension direction, and a circle center connecting line, which keeps the minimum angle difference with the distribution direction of the paired basic holes, of the pair of adjusting holes keeps the angle difference with the distribution direction of the basic holes by 2 degrees to the greatest extent; an angle difference between the circle center connecting lines of any two pairs of adjusting hole which are the most similar in inclination degree is 2 degrees to the greatest extent; and a plurality of angle marks, which are located on the circle center connecting lines of the paired adjusting holes, are arranged on the main body. According to the adjuster disclosed by the invention, a front section and a rear section can be effectively controlled to be parallel to an epicondylar axis, so that improper external rotation osteotomy of femoral front and rear condyles is avoided; therefore, precise osteotomy is achieved and the clinical curative effect is improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments for total knee replacement surgery, in particular to a femoral external rotation osteotomy adjuster. Background technique [0002] With the continuous development and progress of medical technology, artificial knee replacement surgery has become one of the routine treatments for knee joint lesions. Artificial knee replacement is the use of artificial joint prosthesis to replace the damaged joint to restore and improve joint function and improve the quality of life. Due to the short course of artificial knee replacement and obvious pain relief effect, it is accepted by more and more doctors and patients. In artificial knee arthroplasty, an osteotomy of the distal femur is required to obtain a femoral model for the artificial joint prosthesis, such as figure 1 As shown, the distal end of the femur is firstly osteotomized to form a vertical section a, and then two flat section b perpend...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/16A61B17/56
CPCA61B17/1657A61B17/1675A61B17/1732A61B2017/564
Inventor 孔杰张鹏杜建春万连平刘泽淼
Owner 青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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