Method for preoperative screening of position where nerve stimulator is implanted into skull and system thereof

Abstract

The invention relates to a method for preoperative screening of a position where a nerve stimulator is implanted into a skull and a system thereof. The method comprises the following steps: acquiring image data of the skull of a patient and a 3D appearance model of the nerve stimulator; reconstructing a 3D structure of the skull of the patient according to the image data; utilizing the 3D appearance model of the nerve stimulator and the 3D structure of the skull of the patient to calculate the adaptation coefficient of the nerve stimulator to be implanted into the skull region of interest; and determining the optimal position of the nerve stimulator to be implanted into the skull according to the adaptation coefficient. According to the method, the implantation position of the skull implanted into the nerve stimulator is screened before the operation, on one hand, the individualized optimal skull implantation position can be selected according to the individual difference of patients before the operation, the operation time is shortened, on the other hand, the matching condition of the implanted nerve stimulator and the skull can be truly demonstrated and evaluated, individual adaptation of the nerve stimulator and the skull is truly achieved, safety after implantation is guaranteed to the maximum extent, and the problems of difficulty and complications of implantation of the existing nerve stimulator into the skull are solved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a method and system for preoperatively screening the position of a nerve stimulator implanted in a skull. Background technique [0002] The neurostimulator system implanted in the skull consists of a neurostimulator implanted in the skull and stimulating electrodes implanted deep in the brain, and is used to treat neurological disorders such as epilepsy. Because the neurostimulator implanted in the skull has a certain thickness, length, width and volume, and because of the significant differences among individuals in the skull, how to select the appropriate implantation position to achieve the optimal balance between the stimulator and the curvature of the skull and the thickness of the skull One of the key issues in this type of surgery is to ensure the best fit, maximize the safety after implantation, and minimize the side effects after implantation. [0003] Conside...

AI Technical Summary

Problems solved by technology

Currently, Neuropace's cranial nerve stimulators are commonly implanted in the parietal bone and the occipital bone. Usually, the neurosurgeon compares the shape of the patient's skull with the shape of the neurostimulator during the operation. Perform craniotomy after the approximate range, and adapt to the shape of the neurostimulator while removing the skull, which will lead to prolonged operation time

More importantly, due to the existence of individual differences, this adaptation is often not realized in the practical application of clinical surgery. It is shown that part of the neurostimulator fits well with the skull, and part of it is upturned and protrudes from the surface of the skull.

In the end, the doctor can only choose an implant position, radian, and angle for fixation.

In this case, clinical complications are often prone to occur, such as abnormal appearance of the patient's head after suturing the skin, which affects the appearance; excessive tension of the sutured skin leads to poor blood supply of the local skin, affects wound healing, and even implantation The neurostimulator is exposed after a period of time

In addition, poorly fitting neurostimulator implants also affect the patient's posture during sleep, and the head cannot be turned to the implanted side

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