Anteversion angle and abduction angle positioning and guiding device in hip replacement

A technology of hip joint replacement and guiding device, which is applied in the field of surgical equipment, can solve problems such as difficult acetabular cup positioning, hip joint revision, difficult pelvic coronal plane, etc., and achieves easy operation of the device, intuitive and easy-to-obtain results, and improved accuracy Effect

Pending Publication Date: 2021-03-19
THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the patient's pelvis is deformed, it is difficult to accurately locate the coronal plane of the pelvis with existing technologies, and it is difficult to locate the...

Method used

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  • Anteversion angle and abduction angle positioning and guiding device in hip replacement
  • Anteversion angle and abduction angle positioning and guiding device in hip replacement
  • Anteversion angle and abduction angle positioning and guiding device in hip replacement

Examples

Experimental program
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Embodiment 1

[0041] This embodiment discloses a positioning and guiding device for anteversion and abduction angles in hip replacement surgery, including a pelvic sagittal plane positioning device 1 , a pelvic cross-section positioning device 2 , a fixing device 3 and a guiding device 4 .

[0042] The pelvic sagittal plane positioning device 1 includes a positioning plate 11 and a positioning column 12. The side of the positioning plate 11 is provided with an arc-shaped portion 13 that matches the curve of the back of the pelvis. The positioning column 12 includes a pubic symphysis positioning column 14 and a sacral angle positioning column 15. And the sacral median crest positioning column 16, the pubic symphysis positioning column 14, the sacral angle positioning column 15 and the sacral median crest positioning column 16 are all located on the side of the arc 13, and the pelvic sagittal plane positioning device 1 is far away from the side of the arc 13 Slide rail 17 is provided.

[0043...

Embodiment 2

[0054] This embodiment discloses a positioning guide device for anteversion angle and abduction angle in hip joint replacement. As shown in the figure, this embodiment also adds a translation mechanism 7 on the basis of Embodiment 1. The translation mechanism 7 includes a translation control block 71, a third connecting rod 72 and a control knob 73, and the translation control block 71 is provided with two The direction of the third through hole 74 perpendicular to each other, the second connecting rod 41 and the third connecting rod 72 are respectively pierced on the two third through holes 74 perpendicular to each other, the rotation control knob 73 fixes the translation control block 71 and the second connection The relative positions of the rod 41 and the third connecting rod 72. The guide device 4 is fixedly connected with the end of the third connecting rod 72 .

[0055] In this embodiment, the bottom of the U-shaped frame 46 is detachably connected to the forward tilt ...

Embodiment 3

[0058] This embodiment discloses a positioning guide device for anteversion angle and abduction angle in hip joint replacement. In this embodiment, the pubic symphysis positioning column 14 , the sacral angle positioning column 15 , the sacral median crest positioning column 16 , and the second positioning column 23 are all retractable structures. To accommodate patients with different pelvic sizes. As shown in the figure, the second positioning post 23 includes an outer rod 231 fixedly connected to the second slider 25 and an inner rod 232 slidably connected to the outer rod 231 , the outer rod 231 is sheathed on the inner rod 232 . The inner rod 232 is provided with a scale showing the length of the second positioning column 23 to ensure that the two second positioning columns 23 have the same telescopic length. The outer rod 231 is also provided with a fixing screw 233 for fixing the inner rod 232 .

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PUM

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Abstract

The invention discloses an anteversion angle and abduction angle positioning and guiding device in hip replacement. The anteversion angle and abduction angle positioning and guiding device comprises apelvis sagittal plane positioning device, a pelvis cross section positioning device, a fixing device and a guiding device. A projection surface of a coronal plane of the pelvis is indirectly positioned by positioning the sagittal plane and the cross section of the pelvis and through a mutual vertical relationship among the sagittal plane, the cross section and the coronal plane. An anteversion angle and an abduction angle of an acetabular cup can be directly obtained in an operation, a result is intuitive and easy to obtain, and the device is easy and convenient to operate, greatly shortens operation time, and improves the angle positioning accuracy of the acetabular cup and the success rate of the hip replacement.

Description

technical field [0001] The invention relates to the field of surgical appliances, in particular to a positioning guide device for anteversion angle and abduction angle in hip joint replacement. Background technique [0002] According to statistics, nearly 600,000 cases of artificial joint surgery are performed in Europe every year; in the United States, with a population of more than 300 million, about 400,000 cases of artificial hip replacement surgery and about 500,000 cases of knee joint replacement are performed every year. my country is currently entering an aging society. The number of patients with osteoarthritis and femoral neck fractures alone has reached 50 million, and the number of patients receiving artificial joint replacement will increase year by year. According to calculations, the total number of potential primary artificial joint replacement plus revision surgery in China should be around 1.2-1.7 million per year. [0003] Accurate positioning of the acet...

Claims

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Application Information

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IPC IPC(8): A61F2/46
CPCA61F2/4601A61F2/4607A61F2/4609A61F2/4657A61F2002/4668
Inventor 黄先哲刘婵毛新展
Owner THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV
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