3D-printed cervical vertebra pedicle screw guide and implantation plate and preparation method thereof

A pedicle screw, 3D printing technology, applied in medical science, internal bone synthesis, internal fixator, etc., can solve the problems of not being able to guide multiple cervical vertebral bodies, and not being able to guide the cervical pedicle screws into screws, etc. The effect of reducing the difficulty of fitting, stable use of the device and ensuring accuracy
CN104739501AActive Publication Date: 2015-07-01BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV
Publication Date
2015-07-01

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Abstract

The invention relates to a 3D-printed cervical vertebra pedicle screw (cervical spine 2-7) guide and implantation plate and a preparation method thereof. The implantation plate is printed through the 3D printing technology and comprises one or more guide plates, one or more cervical vertebra pedicle screw guide screw ways and one or more spinous process holes where spinous processes are inserted, wherein the cervical vertebra pedicle screw guide screw ways and the spinous process holes are formed in the guide plates, a plane is arranged on the upper portion of each guide plate, a curve surface is arranged on the bottom of each guide plate and consistent with the vertebral plate reversely, and the plane on the upper portion of each guide plate extends to a screw inlet way and extends for 2-5 mm on the outlet of the plane on the upper portion. When many guide plates are provided, connectors are arranged between the guide plates. Several fixing pins are arranged on the guide plates in order to guarantee stability of the guide and implantation plate, and fixing clamps are arranged near the spinous process holes. The 3D-printed cervical vertebra pedicle screw guide and implantation plate is simple and reasonable in structure, convenient to use and capable of effectively providing individual screw inlet guide hole ways for cervical vertebra pedicle screws, guaranteeing screw inlet accuracy, reducing operation difficulty and operation risks.
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Description

technical field

[0001] The invention belongs to a guiding medical device for cervical posterior surgery, in particular to a 3D-printed cervical pedicle screw guiding implant plate. Background technique

[0002] The biomechanical stability of cervical pedicle screw fixation is better than that of other cervical fixation techniques, and even exceeds the stability of anterior titanium plate + posterior lateral mass fixation, which is to correct cervical kyphosis and perform cervical fixation and fusion It is also an ideal fixation method for treating cervical spine diseases such as cervical spine fracture and dislocation. However, the cervical pedicle is not only small but also located in the narrow space formed by the vertebral artery, spinal cord and upper and lower nerve roots, which increases the difficulty and risk of pedicle screw placement. The currently commonly used free-hand nail placement method is based on anatomical landmarks. The key to accurately inserting cerv...

Claims

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