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Open-type wedge osteotomy device

An open, wedge-shaped technology, applied in the direction of internal bone synthesis, medical science, external plate, etc., can solve the problems of interference with surgical operations, low guiding accuracy, low stability, etc., to achieve convenient use, small size, and no attachment to the structure effect of things

Pending Publication Date: 2018-12-14
吴頔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides an open wedge osteotomy in order to solve the problems of the existing osteotomy guide plate used for open wedge osteotomy, such as difficulty in positioning itself, low guiding precision, low stability, interference with surgical operations, excessive size, and complex structure. wedge osteotomy device

Method used

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Experimental program
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specific Embodiment approach 1

[0030] Specific implementation mode one: combine Figure 3 to Figure 4 Describe this embodiment, in this embodiment, the inner surface of the open wedge-shaped osteotomy device coincides with the bone surface of the operation area, the open wedge-shaped osteotomy device is provided with a positioning edge 2, and the outer surface of the open wedge-shaped osteotomy device is provided with a Kirschner Needle guide sleeve, angle mark hole 5 and two distraction position mark holes 6;

[0031] The number of Kirschner wire guide bushings is ≥ 3, of which at least 2 Kirschner wire guide bushes are guide holes 3-1, the centerlines of the guide holes 3-1 are in the same plane, and they are all perpendicular to the virtual axis; at least 1 of them The Kirschner wire guide sleeve is the positioning hole 3-2, and the positioning hole 3-2 is not on the connecting line of the guiding hole 3-1;

[0032] The two stretching position marking holes 6 are respectively located on both sides of th...

specific Embodiment approach 2

[0039] Specific embodiment two: the difference between this embodiment and specific embodiment one is: there are n positioning edges 2, n≥1; the closest positioning edge 2 to the joint is called the first positioning edge, and the first positioning edge is The edge of the articular surface (ie, the tibial plateau) is parallel, and the first positioning edge is 8-50 mm from the edge of the articular surface. Others are the same as the first embodiment.

[0040] In this embodiment, the distance from the first positioning margin to the other edge of the open wedge osteotomy device is 30-50 mm. When used for high tibial osteotomy, the distance from the first positioning edge to the tibial plateau should not be less than 10mm.

specific Embodiment approach 3

[0041] Specific embodiment 3: The difference between this embodiment and specific embodiments 1 or 2 is that: the outer surface of the open wedge-shaped osteotomy device is also provided with pointing signs 7 and / or explanatory text. Others are the same as the first or second embodiment.

[0042] The pointing mark 7 is an arrow-shaped mark, pointing to the palpable bone uplift point in or near the operation area; and it is not parallel to the first positioning side. The pointing mark 7 is depicted on the outer surface of the open wedge osteotomy device in the form of negative or positive. The depth of depression or the height of protrusion is 0.5-3 mm, and the total length of the arrow is not less than 10 mm. The angle between the pointing mark 7 and the first positioning side is 15°-45°.

[0043] When used for high tibial osteotomy, the explanatory text indicates the distance from the first positioning side to the tibial plateau. The explanatory text marks the brace distanc...

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Abstract

The invention provides an open-type wedge osteotomy device, relates to the technical field of medical equipment, and especially relates to a device used for skeleton operation. The device solves problems that an existing osteotomy guide plate used for open-type wedge osteotomy is difficult in self positioning, not high in guiding precision, not high in stability, too large in size, and complex instructure, and interferes operation procedures. The inner surface of the open-type wedge osteotomy device fits a skeleton surface of an operation region. The device is provided with a positioning edge. The outer surface of the open-type wedge osteotomy device is provided with a kirschner wire guide sleeve, an angle mark hole, and two strut-open position mark holes. The open-type wedge osteotomy device accurately positions the device, and a positioning method does not increase operation wound, and operation by operators is easy. The device has good precision in aspects of directions, depth, andangle in guidance. The device ensures good stability, and would not deform or move which influences positioning precision, the deformation or displacement being caused by stress in operation procedures. The device is simple in structure and convenient in use, and does not block operation visual field. The device is small in volume, and can be placed in a small incision.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a device for bone surgery. Background technique [0002] Open wedge osteotomy is a surgical method for correcting joint varus and varus. The core idea is to form a wedge-shaped opening in the bone and change the angle of the bone to correct the deformity through osteotomy and distraction. Osteotomy may be uniplane or biplane, and the bone is not cut off during the osteotomy, but a layer of bone is retained as the axis of rotation (also known as the hinge) during the subsequent distraction process. In this process, it is necessary to accurately locate the position of the osteotomy plane, the depth of the osteotomy, and the distraction angles of the two directions of rotation in order to achieve the ideal curative effect. [0003] Most of the osteotomy guides are designed for special operations, not suitable for open wedge osteotomy, and the existing osteotomy guide de...

Claims

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Application Information

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IPC IPC(8): A61B17/16
CPCA61B17/1657A61B17/8095
Inventor 吴頔陈广俊耿硕王大为王烜王跃华潘熙文郭瑞
Owner 吴頔
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