Disassembly type double-side type percutaneous individualized pedicle screw guiding template

Abstract

The invention relates to the technical field of medical equipment, in particular to a disassembly type double-side type percutaneous individualized pedicle screw guiding template. The guiding template is provided with a positioning mechanism, a cross connection part, a screw guiding pipe and a screw guiding hole; the screw guiding hole is formed in the cross connection part and penetrates the cross connection part from top to bottom, is communicated with the screw guiding pipe and is contained in the screw guiding pipe; the positioning mechanism is provided with a mastoid process positioning mechanism and an appendage positioning mechanism, and the mastoid process positioning mechanism and the appendage positioning mechanism are totally attached to the mastoid process and the appendage of the thoracolumbar vertebra needed for simulation before an operation respectively in the aspect of form; the cross connection part is composed of a left cross connection part body and a right cross connection part body; a clamping block is arranged at one end of the left cross connection part body; a clamping groove is formed in one end of the right cross connection part body; in use, the clamping block is inserted in the clamping groove so that the left cross connection part body and the right cross connection part body can be connected into a whole; the screw guiding pipe is connected with the left cross connection part body and the right cross connection part body, and the cross connection part and the positioning mechanism are connected into a whole. The structure is simple, operation is convenient, cost is low, operating difficulty is reduced, operation time is shortened, and the disassembly type double-side type percutaneous individualized pedicle screw guiding template is particularly suitable for being applied to a minimally-invasive pedicle screw internal fixation operation.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a detachable bilateral percutaneous individualized pedicle screw navigation template. Background technique [0002] Thoracolumbar fractures refer to the destruction of the continuity of the thoracolumbar spine due to external forces. This is the most common spinal injury. Among young and middle-aged patients, high-energy injuries, such as car accidents and falls from heights, are the main cause of injury. Due to the existence of osteoporosis in elderly patients, the injury factors are mostly low-violence injuries, such as slips and falls. Patients with thoracolumbar fractures are often associated with neurological impairment, and because the injury factor is basically high-energy injury, they are often associated with other organ injuries, which brings great difficulties and challenges to treatment. [0003] Thoracolumbar compression and burst fractures are common ty...

AI Technical Summary

Problems solved by technology

However, due to the large trauma of traditional open and place nail surgery, the wide range of tissue incision, and the long-term stretching of surrounding tissues during the operation, which seriously affects the postoperative functional recovery of patients, so in recent years with the development of minimally invasive spinal surgery , the technique of percutaneous pedicle screw fixation has been paid more and more attention. The determination of the entry point and direction of the pedicle screw during the operation is the key to this technique. In skin pedicle surgery, it is often necessary to place screws under continuous fluoroscopy, resulting in increased radiation doses for medical staff and patients, which can lead to leukemia and skin cancer for a long time. Although freehand pedicle screws can reduce fluoroscopy, it prolongs the 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, and the cost is high and it is not easy to popularize

[0004] At present, there are some guide plate structures made according to the structure of the thoracolumbar articular process, which can help the operation to proceed smoothly, but there are still some problems that require open surgery to expose the anatomical part, the direction of the screw will change due to the change of the body position, and the stability is not enough during the operation. Easy to place, inconvenient to operate, and not easy to dismantle after surgery, etc. technical problems, not suitable for percutaneous minimally invasive spinal internal fixation surgery

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