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a regulator

An adjuster and adjustment hole technology, applied in the field of adjusters, can solve the problems that parallel lines and transcondylar lines cannot be parallel, no adjustment tools, etc., and achieve the effect of improving calibration accuracy and easy to grasp.

Active Publication Date: 2017-10-24
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 calibrated line d cannot be parallel to the through-condyle line, so as to provide an adjuster that can accurately adjust the parallel line of the above-mentioned line d, so that the calibrated line is parallel and consistent with the through-condyle line

Method used

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Embodiment 1

[0043] This embodiment provides an 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 being fitted and set on the fixed nail to be adjusted at the same time; a pair of adjustment holes 2, 3, 4, 5, 6 with the smallest angle difference between the line between the center of the circle and the line between the centers of the paired reference holes 1 , 7, the angle difference between the connecting line of the center of the circle and the connecting line of the center of the paired reference holes 1 is at most 2°; any two pairs of the adjustment holes 2, 3, 4, 5 with the closest inclination degree, The angle difference between the lines connecting the centers of 6 and 7 is at most 2°.

[0044] For the adjuster of this embodiment, when using a calibration tool to nail two...

Embodiment 2

[0053] This embodiment provides a method of using the regulator, refer to Figure 4 shown, including the following steps:

[0054] S1. Fit the pair of reference holes 1 on the body 10 to the pair of fixing nails to be adjusted;

[0055] S2. Find a pair of adjustment holes 2, 3, 4, 5, 6, 7 where the connecting line between the center of the circle and the condylar line is parallel or the closest parallel;

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

[0057] The use method of the 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 through-condyle line, so that the adjusted connection line of the fixation nail and the through-condyle line can reach a higher level. Good parallel.

[0058] When the positions of the pair of adjustment holes 2, 3, 4, 5, 6, and 7 found are not suitable for setting new fixing nails, t...

Embodiment 3

[0063] This embodiment provides an adjuster, which is a deformation on the basis of Embodiment 1, such as Figure 5 As shown, the difference is: it also includes an inclination angle structure, (this inclination angle structure no longer takes the intersection of a pair of reference holes 1 on the body 10 and the edge of the body 10 as the center of the circle to set the angle mark, but resets the inclination angle structure), so The inclination angle measuring structure is installed on the body 10 for measuring the angle difference between the condylar line 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 b...

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Abstract

The invention provides an adjustor and a utilization method thereof. The adjustor comprises a body which is provided with a pair of datum holes and a plurality of pairs of adjusting holes, and intervals of the paired datum holes allow the datum holes to fittingly sleeve to-be-adjusted fixing nails at the same time. An angular difference between the circle center line of the paired datum holes and the circle center line of the pair of the adjusting holes, minimum in angular difference between the circle center line of the adjusting holes and the circle center line of the paired datum holes, is 2 degrees maximally. An angular difference of the circle center lines of two pairs of the adjusting holes most approximate in tilt degree is 2 degrees maximally. Compared with human eye pre-estimation in the prior art, the adjustor has advantages that the adjustor is easier to master and capable of controlling errors within 2 degrees; by adoption of two adjusted fixing nails as foundation, front and rear tangent planes can be effectively controlled to be basically parallel to a transepicondylar line, impropriety in femoral front-rear condylar extorsion osteotomy is avoided, accuracy in osteotomy is realized, and clinical effects are improved.

Description

technical field [0001] The invention relates to the technical field of medical instruments for total knee replacement surgery, in particular to an 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 perpendicular to the vertical section a ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/15A61B17/56
CPCA61B17/155A61B17/56A61B2017/564
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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