Three-dimensional guiding method for use in orthopaedic operation and guider thereof

Abstract

The invention discloses a three-dimensional guiding method for use in an orthopaedic operation and a guider thereof. In the invention, an acceleration sensor and a magnetic field sensor are fixedly arranged on an operating instrument, wherein the acceleration sensor acquires gravity acceleration components corresponding to the axes of the operating instrument, and the magnetic field sensor acquires the magnetic field components corresponding to the axes of the operating instrument; the acquired gravity acceleration components and magnetic field components are converted into azimuth angle and sagittal saw angle information which is to be displayed in real time; and real-time three-dimensional orientation guiding is performed according to the displayed azimuth angle and sagittal saw angle information. The guider can be used to help medical care personnel to determine the sizes of azimuth angles and sagittal saw angles in clinic so as to avoid various human errors. Meanwhile, the guider has a small volume and therefore is convenient to carry; and when the guider is used, the medical care personnel can acquire real-time position accurate information, so that the successful rate of an operation can be increased.

Description

technical field [0001] The present invention relates to a three-dimensional directional guide method for orthopedic surgery; the present invention also relates to a three-dimensional directional guide using the method as an auxiliary device in orthopedic surgery such as cervical, thoracic, and lumbar pedicle puncture and screw fixation. device. Background technique [0002] In the existing orthopedic surgery operations, the puncture technique is widely used, especially in the transpedicular operation of spinal surgery, the puncture must be performed in the only correct bony channel, so that the screw or bone cement can be placed Therefore, clinicians are required to determine the sagittal angle and azimuth angle of instrument operation with high precision. However, at present, the angle is generally estimated roughly based on the experience of the doctor's visual observation. Therefore, even an experienced doctor cannot guarantee that the angle is completely correct or basi...

AI Technical Summary

Problems solved by technology

From the physical characteristics of the material itself, it is difficult to guarantee its inherent accuracy; the tool accuracy during processing also affects the accuracy of its device

[0006] 3. Due to the difference between nurses and nurses in the operation, it is difficult to require every user to abide by the reading rules when reading the scale, and human error is introduced from actual use

[0008] 5. From the description of the structure of the device itself, it is determined that its volume is too large, it is not portable, and it cannot provide dynamic position information so that medical staff can adjust the angle in time according to individual differences to meet the requirements of specific situations, and the use is relatively cumbersome and complicated

[0009] 6. The device must be anchored on bony structures such as the spinous process, which is only suitable for open surgery when the corresponding anatomical landmarks are clearly exposed, and cannot be applied to minimally invasive spinal surgery that is currently widely emerging, such as: Percutaneous pedicle screw fixation, percutaneous vertebroplasty, percutaneous kyphoplasty, etc.

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