Frameless skull positioning head frame under navigation

Abstract

The invention discloses a frameless skull positioning head frame under navigation. The frameless skull positioning head frame comprises a clamping device; and a head frame device used for being fixed to the skull, wherein one end of the adjusting device is connected to the clamping device and can achieve bending and rotating adjustment in the axial direction of the adjusting device, and the other end of the adjusting device is connected to the head frame device and can achieve bending and rotating adjustment in the axial direction of the adjusting device. The flexible degree is high, the direction can be accurately adjusted according to the navigation direction through the adjusting device, and the operation path required by the neurosurgery operation can be fully covered. The placing direction can be rapidly adjusted and orientation can be completed under navigation, and the problems that a traditional head frame is long in positioning time and not convenient enough are solved. Meanwhile, the head frame skull positioning head frame under navigation only adopts a mechanical structure design, has no other active requirements, and is lower in cost and beneficial to use.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a frameless skull positioning head frame under navigation. Background technique [0002] In neurosurgery, the use of 3D monitoring with navigation is very positive, since even very experienced surgeons cannot always locate precisely when operating on deep lesions. Although the CT-guided stereotaxic system (using a directional head frame) can provide the operator with the three-dimensional direction of the intracranial target, it does not have the function of real-time monitoring of the surgical field. For intraoperative monitoring, the operator must know the coordinates of the surgical site on the orienter frame at any time, and input them into the computer to obtain the corresponding coordinates on the CT image. [0003] In 1988, Kelly successfully solved this problem. He fixed the stereotaxic head frame on the patient's head, connected it to the operating microscope, ...

AI Technical Summary

Problems solved by technology

There are two main directions for the development of surgical positioning methods. The first direction is to combine with traditional framed positioning surgery and navigation, using traditional neurosurgery head frames, such as Mayfield, Lexel and other head frames, by piercing the scalp, Surgical equipment embedded in the skull and fixed on the patient's head, so that the skull is limited to a fixed position. During the use of the head frame, it is emphasized that the head frame is fixed reliably. The doctor can adjust the directions such as forward extension, backward tilt, left and right tilt swing, etc. according to the surgical needs , that is to say, this type of head frame mainly relies on the rotation and movement of the head frame to achieve direction positioning. This method is reliable in positioning, but it takes a lot of time to prepare for surgery before surgery, and it is not very convenient for intraoperative position changes.

[0005] The second method is to use frameless surgical positioning technology. The positioning head frame pointed by the optical locator is fixed on the skull, so that the navigation equipment can transmit the skull position information in real time according to the different skull positions, and the patient can effectively adjust during the operation. The body position is more convenient for surgery. Compared with positioning surgery with a frame, it causes less trauma during the operation. Once the positioning head frame is fixed well, the operation time can be greatly shortened, which can greatly release the convenience of the operation. The disadvantage is that surgical instruments are used during the operation. The process of entering the channel to reach the target point is affected by the operation gesture, which requires very high stability for the operator to hold. For some operations, it is required to be able to repeatedly enter and exit the same surgical access point and operate back and forth on the same channel. Such a flexible The plan instead affects the operation process

For this kind of solution, there is also a robot navigation technology developed on this basis. The multi-axis robotic arm is controlled by computer software and PLC to achieve complete precision of the surgical channel. The disadvantage of this method is that the one-time investment cost is high, and the surgical robot is bulky. To a certain extent, it is still impossible to achieve complete boundary surgery

[0007] At present, in neurosurgical navigation surgery, only ordinary triangular or four-corner fixed head frames are generally used, which can only meet the needs of various body positions and play a good role in fixing the head, but the puncture target or multiple punctures still need to be performed by a doctor. Manual positioning, or the operation is completed under navigation positioning, so the operation preparation time is very long, affecting the best treatment time

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