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Tibia intramedullary orientator

A orientator and tibial bone marrow technology, which is used in bone drill guidance, medical science, surgery, etc., can solve the problems that the locator is not easy to locate and adjust, and achieves convenient operation, solves the problem of osteotomy positioning and osteotomy volume determination. , the effect of simple structure

Pending Publication Date: 2017-10-24
CHANGZHOU ORTHMED MEDICAL INSTR
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Problems solved by technology

[0004] There have been many jigs or instruments for determining the amount of osteotomy in the prior art, for example: the determination of the amount of osteotomy, the position of the osteotomy and the inclination angle of the osteotomy surface are realized by the tibial depth finder, but the positions of these jigs or instruments are all different. It needs to be positioned, and the existing positioners have defects such as difficult positioning and inconvenient adjustment

Method used

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  • Tibia intramedullary orientator
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  • Tibia intramedullary orientator

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Embodiment Construction

[0025] The present invention will now be described in detail with reference to the drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic way, so it only shows the structure related to the present invention.

[0026] Such as Figure 1-Figure 7 As shown, a tibial intramedullary orientator of the present invention includes a main body 4, a horizontal frame 2, a horizontal shaft 5 and a rotation adjustment plate 9.

[0027] The main body 4 is provided with a long nail hole 19 and a directional rod hole 20 passing through the upper and lower end surfaces. The directional rod hole 20 is used to install the intramedullary directional rod 14 and is used to adjust the position of the directional device to determine the line of force of the tibia 21. The line of force refers to the mechanical axis of the tibia 21. Generally, the mechanical axis of the lower limb passes through the center of the knee joint;...

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Abstract

The invention provides a tibia intramedullary orientator which comprises a body, a transverse frame and a rotary adjusting plate. A long nail hole and an orientation rod hole which run through the upper end face and the lower end face are formed in the body. The rotary adjusting plate is arranged on the side face of the body. The lower end of the rotary adjusting plate and one end of the transverse frame are fixedly connected to form an L-shaped structure. The joint of the rotary adjusting plate and the transverse frame is rotationally connected to the body through a pin. Angle indicating scales are arranged on the portion, corresponding to the upper end of the rotary adjusting plate, of the body. By adjusting the placement position of the orientator, the tibia line of force is obtained; the varus angle, hallux valgus angle and caster angle required by osteotomy are obtained by adjusting the different angles of the orientator, the problems of osteotomy orientation and osteotomy determination in knee joint replacement are effectively solved, and the tibia intramedullary orientator is simple in structure and convenient to operate.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to a tibial intramedullary orientator. Background technique [0002] The knee joint is the largest and most complex joint in the human body. Knee replacements are used for severely damaged knee joints. As knee replacement has become the most popular surgery for severe knee injuries, research on knee replacement has also received increasing attention. [0003] Artificial knee joint surface replacement surgery mainly involves implanting femoral prosthetic components and tibial prosthetic components between the distal femur and the proximal tibia to replace the damaged knee joint. Among them, when performing osteotomy on the tibia, it is necessary to determine the accurate osteotomy amount, osteotomy position, and inclination angle of the osteotomy surface. [0004] There are already many jigs or instruments for determining the amount of osteotomy in the prior art. For exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B90/00
CPCA61B17/1732A61B17/1764A61B90/06A61B2017/564A61B2090/067
Inventor 周嘉宏郑东桂
Owner CHANGZHOU ORTHMED MEDICAL INSTR
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