Atlantoaxial pedicle screw guider

Abstract

The invention provides an atlantoaxial pedicle screw guider. The atlantoaxial pedicle screw guider is fixed at a position of a posterior arch tubercle of the atlas and used for guiding a fixing piece to be implanted into an implantation point positioned at the pedicle. The atlantoaxial pedicle screw guider is characterized in that the atlantoaxial pedicle screw guider comprises arc rack bodies, a positioning portion, and two hollow guiding cylinders, each arc rack body is provided with a penetrating through hole at the central part and two guiding grooves positioned at two sides of the penetrating through hole, the positioning portion includes a clamp opening used for being in occlusion with the posterior arch tubercle, two clamp legs, and an opening angle fixing member for fixing the opening angle to be in firm occlusion with the posterior arch tubercle, the two hollow guiding cylinders are fixed in the guiding grooves according to the implantation point to allow the fixing piece to penetrate through, and any clamp leg of the two clamp legs penetrates through the penetrating through hole so that the arc rack bodies and the positioning portion are fixed. According to the atlantoaxial pedicle screw guider, the implantation of the fixing piece is more precise, needle-insertion frequency and X-ray radiation can be reduced, the operation time is shortened, the operation is safer, the internal fixation is more reliable, the fracture healing effect is better, and the clinic application value is good.

Description

technical field [0001] The invention relates to an auxiliary medical instrument for implanting with pedicle screws, in particular to an atlantoaxial pedicle screw guider for atlantoaxial vertebrae. Background technique [0002] The upper cervical spine (C1, C2) is prone to fracture and dislocation (odontoid process fracture, Jefferson fracture, Hangman fracture, etc.) It has very serious consequences and is not easy to treat. For some fractures and dislocations, it is necessary to reduce and stabilize the fractures and dislocations by means of surgery, but most hospitals and orthopedic surgeons cannot complete these operations. The reasons are: 1. The risk of surgery is high, which will cause paralysis and life-threatening; 2. The design of the internal fixation system is not perfect, which is not conducive to use and installation; 3. The tools are ordinary tools, without guiding and positioning functions, which are completely based on the doctor's feeling, and the blindnes...

AI Technical Summary

Problems solved by technology

[0002] The upper cervical spine (C1, C2) is prone to fracture and dislocation (odontoid process fracture, Jefferson fracture, Hangman fracture, etc.) Very serious consequences and not easy to treat

For some fractures and dislocations, it is necessary to reduce and stabilize the fractures and dislocations by means of surgery, but most hospitals and orthopedic surgeons cannot complete these operations. The reasons are: 1. The risk of surgery is high, which will cause paralysis and life-threatening; 2. The design of the internal fixation system is not perfect, which is not conducive to use and installation; 3. The tools are ordinary tools, without guiding and positioning functions, which are completely based on the doctor's feeling, and the blindness is large; 4. The screws and tools currently used are imported, not designed for Chinese people , and expensive, which limits the application

In addition, after the screw is implanted, it is necessary to use a fluoroscopy instrument to check whether the position of the screw implantation is accurate, or even to repeatedly implant the screw and perform multiple fluoroscopy. Great injury, prolonged operation time

[0003] At present, in the field of medical devices, there is no medical device that implants the fixation element at the implantation point of the pedicle for the atlantoaxial spine, and such technical solutions are still blank

Images