Adjuster for joint replacement and use method of adjuster

A joint replacement and adjuster technology, which is applied in the field of medical devices for total knee replacement surgery, can solve the problems that the parallel line and the condylar line cannot be accurately consistent, and there is no adjustment tool, so as to achieve the effect of improving the calibration accuracy and being easy to grasp

Active Publication Date: 2016-09-28
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 exactly consistent with the condylar line, so as to provide a joint replacement that can accurately adjust the parallel line of the above line d so that the calibrated line is parallel and consistent with the condylar line regulator

Method used

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  • Adjuster for joint replacement and use method of adjuster
  • Adjuster for joint replacement and use method of adjuster
  • Adjuster for joint replacement and use method of adjuster

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Embodiment 1

[0045] This embodiment provides an adjuster for joint replacement surgery, as shown in the picture 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 line connecting the centers of 6 and 7 is at most 2°; the body 10 has a first side 101 and a second sid...

Embodiment 2

[0055] This embodiment provides a method for using an adjuster for joint replacement surgery, refer to picture 4 shown, including the following steps:

[0056] S1. Fit the pair of reference holes 1 on the body 10 to the pair of fixing nails to be adjusted;

[0057] 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;

[0058] S3. Reset new fixing nails at the found positions of the pair of adjustment holes 2, 3, 4, 5, 6, and 7.

[0059] The use method of the adjuster for joint replacement 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 fixing nail and the through-condyle line can be adjusted. Condylar lines achieve better parallelism.

[0060] When the positions of the pair of adjustment holes 2, 3,...

Embodiment 3

[0065]This embodiment provides an adjuster for joint replacement, which is a modification based on Embodiment 1. as shown in the picture 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 .

[0066] 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 fir...

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Abstract

The invention provides an adjuster for joint replacement and a use method of the adjuster. The adjuster for joint replacement comprises a body, wherein at least one pair of datum holes and multiple pairs of adjusting holes are formed in the body, and the paired datum holes can be simultaneously attached to and sleeve fastening nails to be adjusted due to interval setting of the paired datum holes; a pair of adjusting holes whose center connecting line forms the minimum angle difference with a center connecting line of the paired datum holes is set, and the maximum angle difference between the center connecting line of the adjusting holes and the center connecting line of the paired datum holes is 2 degrees; the maximum angle difference between center connecting lines, having the most similar inclination degree, of two pairs of adjusting holes is 2 degrees. Compared with human eye estimation in the prior art, the adjuster is easier to master and can control the error within 2 degrees; the adjusted two fastening nails are taken as a basis, a front tangent plane and a rear tangent plane can be effectively controlled to be basically parallel to the epicondylar axis, improper external rotation osteotomy of anterior and posterior condyle of thighbones is avoided, accurate osteotomy is realized, and the clinical efficacy is improved.

Description

Technical field [0001] The invention involves the field of medical device technology for full knee replacement surgery, and it is specific to a joint adjustment of joint replacement and its usage. Background technique [0002] With the continuous development of medical technology, artificial knee replacement surgery has become one of the conventional treatment methods for the treatment of knee lesions.Artificial knee replacement is a joint of using arthrocatiarism to replace disease damage to restore and improve joint functions and improve the quality of life.Due to the short replacement course of artificial knee joints, the effect of relieving pain is obvious, and more and more doctors and patients are accepted.In artificial knee replacement, the remote end of the femur is needed to obtain the femoral model of the installation of artificial joint prosthesis, such as figure 1 Show, first intercept the long -term femoral bone to form a vertical cut -cut surface A, and then form tw...

Claims

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Application Information

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IPC IPC(8): A61B17/15A61B17/56
CPCA61B17/155A61B17/56A61B2017/564
Inventor 张鹏孔杰杜建春万连平刘泽淼
Owner 山东大学齐鲁医院(青岛)
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