Detachable skin-outer minimally invasive pedicle screw navigation device in combination with perspective

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and relates to a detachable skin-outer minimally invasive pedicle screw navigation device in combination with perspective. The navigation device is composed of N single templates (N is greater than or equal to 3), wherein each single template is provided with a left transverse connector and a right transverse connector, the left transverse connector is provided with a clamping block, the right transverse connector is provided with a clamping groove, and in use, the clamping block is inserted into the clamping groove, so that the left transverse connector and the right transverse connector form a whole; each template is further provided with a transverse perspective positioning needle guide hole, selective minimally invasive positioning needle guide holes, spinous process positioning needle guide holes and longitudinal perspective positioning needle guide holes, the transverse perspective positioning needle guide hole allows a transverse perspective guide needle to pass through, the selective minimally invasive positioning needle guide holes allow a positioning guide needle to pass through, the spinous process positioning needle guide holes allow a spinous process perspective positioning needle to pass through, and the longitudinal perspective positioning needle guide holes allow a longitudinal perspective guide needle to pass through. For the detachable skin-outer minimally invasive pedicle screw navigation device, the templates are completely placed outside the body, and the accuracy is improved through the assistance of perspective, so that radiation exposure and trauma of medical staff and patients are reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a detachable extracutaneous minimally invasive pedicle screw navigation device combined with perspective. Background technique [0002] Thoracolumbar compression and burst fractures are common types of spinal fractures, and the posterior pedicle fixation system is the first choice for dealing with such injuries. Due to the large trauma of traditional open nail placement surgery, the wide range of tissue incision, and the long-term stretching of surrounding tissues during the operation, which affects the postoperative functional recovery of patients, so in recent years, with the development of minimally invasive spinal surgery, through Skin pedicle screw fixation technology has been paid more and more attention. The determination of the pedicle screw entry point and the direction of the screw path during operation is the key to this technology. Pedicle screw placement und...

AI Technical Summary

Problems solved by technology

Due to the large trauma of traditional open nail placement surgery, the wide range of tissue incision, and the long-term stretching of surrounding tissues during the operation, which affects the postoperative functional recovery of patients, so in recent years, with the development of minimally invasive spinal surgery, through Skin pedicle screw fixation technology has been paid more and more attention. The determination of the pedicle screw entry point and the direction of the screw path during operation is the key to this technology. Pedicle screw placement under continuous fluoroscopy is often required in root surgery, resulting in increased radiation doses for medical staff and patients, which can lead to leukemia and skin cancer for a long time. Although the method of pedicle screw placement with bare hands and limited touch can reduce fluoroscopy, it prolongs time. The operation time is longer, and it is more difficult to meet the consistency of the entry point and direction of the screws on both sides of the same vertebra, which affects the reduction effect

[0003] In addition, the existing individualized templates outside the skin are individually designed based on the external shape of the skin, but the soft tissue of the skin moves a lot and is affected by the receptor position, and is not easy to fix, which obviously affects the accuracy of positioning.

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