Skull surface precision locater

Abstract

The invention relates to a skull surface exact orientation device, belonging to a medical appliance for exactly orientating the encephalic focus. The skull surface exact orientation device comprises left, right plate for sticking to the two sides of the skull, earplug levers respectively fixed on the inner sides of the left, right plate and for inserting into the porus acusticus externus and playing a role of positioning, lines symmetrically disposed on the left and right plate and for CT scanning and positioning, wherein the two orientation base lines are disposed in 45 degree, horizontal scanning base line is normal to the orientation base line, and the extension lines of the three lines are crosses at the middle point of the superior border of the earplug lever and the two verification base lines with the given and same length are disposed in 22.5 degree with the horizontal scanning base line; two observation windows are set at the scanning base lines on the left and right plate and a orientation window is set at the middle point of the tie line of the inferior extremity of the two verification base lines. The skull surface exact orientation device has features of no wound, convenient operation, accurate orientation, low cost, being extensively used in clinical treatment.

Description

technical field [0001] The invention relates to a medical instrument, in particular to an instrument designed according to a CT scanning program, used for cranial surgery, and performing cranial surface positioning on intracranial lesions. Background technique [0002] Craniocerebral surgery is an effective means of treating neurological diseases. Conventional craniotomy and the rapid development of minimally invasive, keyhole, microscopic, and navigation surgery in recent years, in terms of cranial surface localization of intracranial lesions, are mostly determined by CT and MRI films. There is a certain inaccuracy in the determination of the pterion point and the extraoccipital tuberosity, and there is also a certain error in the positioning. Stereotaxic is very precise, but there are invasiveness of frame fixation nails and inconvenient operation; navigation is expensive, and only large hospitals can purchase it, and the treatment cost is also high. There are also some ...

AI Technical Summary

Problems solved by technology

There is a certain inaccuracy in the determination of the pter point and the extraoccipital tuberosity, and there is also a certain error in the positioning

Stereotaxic is very accurate, but there are invasiveness of frame fixation nails and inconvenient operation; navigation is expensive, only large hospitals can buy it, and the treatment cost is also high

There are also some experts who have made a lot of efforts in this regard, with various methods, some can only be used for local positioning and cannot be applied to all patients, and the positioning is not accurate.

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