Head transverse sinus sigmoid sinus included angle positioning device and positioning method thereof

Abstract

The invention provides a head transverse sinus sigmoideous sinus included angle positioning device and a positioning method thereof.When the head transverse sinus sigmoideous sinus included angle positioning device is used, a first distance, a second distance and a third distance are read on a nuclear magnetic film of a patient, and the position of a lantern ring of a first positioning rod is adjusted to enable the distance between the lantern ring and a rotating shaft to be the first distance; the distance between the first positioning rod and the second positioning rod is adjusted to be a second distance; the plane where the arc-shaped frame is located corresponds to the sagittal plane of the midline of the head of the patient through the L-shaped rod and the linear rod, then the rotating shaft of the rotating plate at the bottom end of the telescopic rod coincides with the external auditory canal of the patient, and the rotating plate rotates to enable the other end of the first positioning rod to exactly pass through the crystalline lens of the patient; and through the position of the second positioning rod and the third distance read by the scale marks on the second positioning rod, the scalp is marked, so that the accurate positioning of the body surface projection of the transverse B angle of the patient can be completed, the positioning accuracy and the positioning efficiency of the transverse B angle of the patient can be improved, and the safe and normal operation of the operation is facilitated.

Description

technical field [0001] The invention belongs to the technical field of medical surgical aids, and in particular relates to a head transverse sinus sigmoid angle positioning device and a positioning method. Background technique [0002] The retrosigmoid approach is one of the common methods of neurosurgical posterior fossa surgery, and it is widely used in the surgical treatment of posterior inferior cerebellar aneurysm, trigeminal neuralgia, and cerebellopontine angle tumors. In the craniotomy using this approach, it is best to form the bone flap to just expose the edges of the transverse sinus and the sigmoid sinus. The position of the transverse sinus and sigmoid sinus) is easy to cause difficult and dangerous venous bleeding when the bone flap is drilled and removed, which poses a huge risk to the patient. Therefore, accurate prediction of the position of the subcutaneous venous sinus is a necessary prerequisite to ensure the safe and smooth operation of the operation. ...

AI Technical Summary

Problems solved by technology

[0003] In the early days, neurosurgeons empirically used anatomical landmarks such as star points on the bone flap to judge the location of the venous sinus under the bone flap. However, due to physiological differences, the accuracy of this method was not good; what’s more, in order to avoid the above Risky, often start drilling far from the transverse and sigmoid sinuses, and then use a burr to remove the bone to expose the edge of the sinus, which may cause excessive bone loss

[0004] With the development and popularization of neuronavigation equipment and 3D reconstruction software, the navigation system and 3D reconstruction images can be used to predict the position of the transverse sinus and sigmoid sinus under the bone flap during surgery, but this method requires high-end and expensive navigation equipment. Equipment, complex 3D reconstruction software operations, and the need for patients to re-perfect multiple imaging examinations, which increases the patient's economic burden and the complexity of the operation, and is not suitable for emergency patients who require surgery as soon as possible

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