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Measurement device for hip replacement

A hip joint replacement and measurement device technology, which is applied in joint implants, joint implants, diagnostic records/measurements, etc., can solve problems such as insufficient precision and difficulty in ensuring the accuracy of measurement results, and achieve accurate measurement results

Pending Publication Date: 2018-05-04
THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the estimation of the length by this positioning method is only a rough estimate, and the accuracy is not enough; the positioning pin spacing measurement method is to drive a Kirschner wire above the acetabulum and the trochanter of the femur during the operation, and then insert the artificial Changes in the distance between the Kirschner wires measured before and after the joint prosthesis to determine the change in the length of the lower extremity
However, since this length is a single-dimensional distance change, it is difficult to ensure the accuracy of its measurement results

Method used

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  • Measurement device for hip replacement
  • Measurement device for hip replacement
  • Measurement device for hip replacement

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Embodiment Construction

[0022] In order to better illustrate the present invention, the present invention will be further described below with reference to specific embodiments and accompanying drawings. It should be understood that these specific embodiments and accompanying drawings are all exemplary, and are only used to explain the present invention, and should not be construed as a limitation of the present invention.

[0023] Examples of such embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] In addition, terms such as "first" and "second" in the present invention are only used for descriptive purposes, and should not be understood as ...

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Abstract

The invention provides a measurement device for hip replacement. The measurement device comprises an acetabulum-side ruler, a femur-side ruler, a first sleeve, a second sleeve, a first bone needle anda second bone needle, wherein the femur-side ruler is glidingly mounted on the acetabulum-side ruler through a slideway, the first sleeve is detachably mounted on the acetabulum-side ruler, the second sleeve is detachably mounted on the femur-side ruler, the first bone needle is movably sleeved with the first sleeve, and the second bone needle is sleeved with the second sleeve. The measurement device is simple, easy to use and accurate in measurement, and can accurately measure changes of hip joint offset and lower limb length before and after artificial hip joint replacement.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a measuring device for hip joint replacement. Background technique [0002] One of the primary goals of total hip replacement surgery is to achieve equal length of the lower extremities and restore the eccentricity of the hip joint. Accurately measure the length of the lower extremities before surgery, and determine the length of the affected limb and the adjustment length of the eccentricity during total hip arthroplasty, so that the length of both lower extremities after surgery is similar or even equal, and the length of the eccentricity of the hip joint can be restored. Better gait and patient satisfaction afterward. [0003] At present, the most commonly used methods for controlling the length of the lower extremity in clinical total hip arthroplasty are divided into two categories according to the patient's surgical position: the first is that for the surgical position u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/107A61F2/46
CPCA61B5/1072A61F2/46
Inventor 邬培慧傅明何穂文
Owner THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV