An individualized subtalar arthrodesis guide plate and manufacturing method thereof

Abstract

The invention belongs to the field of medical auxiliary equipment, and relates to an individualized subtalar arthrodesis guide plate and a manufacturing method thereof. Through the three-dimensional structural data collection and scanning reconstruction of the subtalar joint and surrounding tissues of the patient's foot, according to the patient's specific foot The calcaneal tray is designed according to the external shape, to ensure that the shape of the calcaneal tray fits the shape of the patient's foot skin and soft tissue to the maximum extent. Through the individualized calcaneal tray and the generalized guide and positioner, it can adapt to different individual patients. At the same time, it reduces the time for precise drilling and positioning of the Kirschner wire and the manufacturing cost of surgical instruments, and realizes the precise grasp of the drilling direction, drilling angle and drilling position of the Kirschner wire, making it consistent with the preoperative design. Highly consistent, compared with the traditional surgical form, it can effectively reduce the operation time, reduce the dependence of the success rate of the operation on the experience of the operator, avoid the intraoperative radiation caused by repeated fluoroscopy, and have a certain effect on the structural improvement of medical auxiliary devices similar to operations. guiding role.

Description

technical field [0001] The invention belongs to the field of medical auxiliary instruments, and relates to an individualized subtalar joint fusion surgery guide plate and a manufacturing method thereof. Background technique [0002] Subtalar joint disease is often a difficult clinical case. Severe subtalar joint osteoarthritis often requires subtalar arthrodesis to completely relieve or eliminate subtalar joint pain and lameness. When performing subtalar arthrodesis, cannulated screws are often required after removal of residual cartilage in the subtalar joint. Before the cannulated screw is fixed, the K-wire in the ideal position should be drilled first. After the C-arm X-ray machine fluoroscopy confirms that the reduction of the subtalar joint is satisfactory, and the position of the K-wire is satisfactory, the cannulated screw is then screwed along the K-wire. It can be seen that the accurate drilling of the Kirschner wire is one of the key steps in the operation. [00...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the auxiliary positioning of the Kirschner wire is generally performed through the experience of the operator and the anatomy of the patient's body surface, which is prone to the disadvantage of repeated fluoroscopy due to inaccurate positioning

Repeated fluoroscopy will not only lead to intraoperative radiation, but also prolong the operation time

[0004] Therefore, it is necessary to design a method for positioning the drilling angle, drilling direction, and drilling position of the Kirschner wire, so as to avoid the surgical disadvantages of repeated positioning due to the inaccurate positioning of the Kirschner wire and the drilling direction.

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