Intramedullary nail interlocking nail implanting method and device

Abstract

The invention relates to an intramedullary nail and interlocking nail implanting method and device.The intramedullary nail and interlocking nail implanting method comprises the steps of obtaining a virtual model, wherein the virtual model is consistent with a target object; obtaining the position of a target object, and enabling the virtual model to basically coincide with the target object; obtaining the positioning information of the target object, so that the virtual model and the target object are accurately overlapped, the visualization of the corresponding approach channel can be realized, and the implantation of the interlocking nail can be directly operated by virtue of vision; The intramedullary nail interlocking nail implanting device comprises a positioning handle and a virtual imaging device. The positioning handle is fixed with the intramedullary nail, and a positioning pairing device is arranged at the other end of the positioning handle; The virtual imaging device is a head-mounted virtual imaging display and can display the positions of the positioning handle and the intramedullary nail, a database of the virtual imaging device is provided with a plurality of virtual combination models of the positioning handle and the intramedullary nail, the virtual combination models can be called during surgical operation, the virtual combination models can be matched with the intramedullary nail in reality in a high-precision mode, and approach positioning of the interlocking nail is facilitated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method and device for interlocking intramedullary nail implantation. Background technique [0002] At present, the intramedullary nail is a commonly used internal fixation device for fixing long shaft fractures in clinical practice. The safe and accurate implantation of the interlocking intramedullary nail is the key to ensure the success of the operation. In the past, the rigid positioning device external to the main nail of the intramedullary nail was mainly used to locate the nail track of the distal and proximal interlocking nails. In this method, there are many joints between the main nail and the external positioning device. And the relative position may change during the operation, resulting in the failure of positioning the interlocking nail. Once this traditional positioning method fails to place the nail, the surgeon can only rely on the repeated fluoroscopy ...

AI Technical Summary

Problems solved by technology

Once this traditional positioning method fails to place the nail, the surgeon can only rely on the repeated fluoroscopy of the X-ray fluoroscopy machine to locate the interlocking nail hole. The operation time will be infinitely prolonged and the radiation dose will increase, causing radiation damage to the patient and the surgeon.

If the interlocking nail fails to implant or is not locked into the main nail of the intramedullary nail, it will seriously affect the firmness of the intramedullary nail, and even cause complications such as redisplacement of the fracture, malunion or nonunion.

[0003] Chinese patent application: CN208677556U discloses a tibial intramedullary nail aiming device, which belongs to the field of supporting surgical instruments for orthopedic implants, and aims to provide a tibial intramedullary nail aiming that facilitates alignment between the locking nail and the locking hole on the intramedullary nail The device is used to solve the problem that the intramedullary nail is difficult to fix. The main points of its technical scheme are as follows. It includes an intramedullary nail sight and a handle. The end of the handle away from the intramedullary nail is provided with a conversion bracket; the intramedullary nail sight includes a proximal aiming frame. And the far-end aiming frame, the far-end aiming frame includes an aiming rod and a horizontal bracket, and the aiming rod is connected to the handle through a conversion bracket; the near-end aiming frame includes a double cross-pin aiming frame and a cross-pin aiming frame, and the double cross-nail aiming frame passes through a conversion bracket It is fixedly connected with the handle, and the cross nail aiming frame is fixedly connected with the handle

This application is suitable for the aiming of tibial intramedullary nails, but it still provides the traditional mechanical positioning method, which is cumbersome to operate, has no visibility and low efficiency

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