Sliding type pedicle osteotome
An osteotomy knife and pedicle pedicle technology, which is applied in the medical field, can solve the problems of limited osteotomy position, unable to meet safety and effectiveness requirements, easy injury, spinal cord and nerve root, etc., so as to improve the accuracy and safety of surgery. Effect
Pending Publication Date: 2021-02-26
FOURTH MILITARY MEDICAL UNIVERSITY
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Problems solved by technology
[0002] In order to achieve a specific tumor resection range and avoid transtumoral operations, some vertebral body appendage tumors need to be resected en bloc. This process often requires pedicle osteotomy. Traditional osteotomy knives often have no curvature design, and are prone to be affected by adjacent bone during osteotomy. The vertebral body and soft tissue are affected, and there is no blocking and depth-finding device, and the spinal cord and nerve roots are easily injured during osteotomy; while the operation of pedicle osteotomy using a wire saw is complicated, the osteotomy position is limited, and the spinal cord and nerve roots are injured during the operation. Nerve root risk is high, unable to meet safety and effectiveness requirements
Method used
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[0028] The present invention will be described in further detail below in conjunction with specific examples, but not as a limitation of the present invention.
[0029] Such as figure 1 As shown, the sliding pedicle osteotomy knife of the present invention includes an osteotomy knife chute and an arc osteotomy knife; the osteotomy knife chute includes a handle 1 and a chute 2 connected to the handle 1, and the chute 2 includes The arc-shaped groove bottom 8 is connected to the arc-shaped high sides 6 arranged vertically on both sides of the arc-shaped groove bottom 8, and the arc-shaped groove bottom 8 forms an angle of approximately 90° with the curved high sides 6 on both sides.
[0030] Such as figure 2 As shown, the arc-shaped osteotomy knife is composed of two parts, the front section is a curved osteotomy blade of equal thickness, the rear section is a prismatic structure with gradually increasing thickness, and the end of the prismatic structure is the percussion end ...
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The invention discloses a sliding type pedicle osteotome which comprises an osteotome sliding groove and an arc-shaped osteotome body, the radian values of the osteotome body and the sliding groove are designed to be 20-40 degrees according to different section curvatures of the thoracolumbar spine of a human body, in the osteotomy process, the sliding groove is clamped at the pedicle osteotomy position, the arc-shaped osteotome body is inserted into the sliding groove, a knocking end at the tail end of the osteotome body is knocked, the osteotome body slides along the sliding groove to achieve osteotomy, the osteotomy track of the arc-shaped osteotome body is limited through the sliding groove, dura mater and nerve roots are prevented from being damaged, and osteotomy accuracy and safetyare improved.
Description
technical field [0001] The invention relates to the medical field, in particular to a sliding pedicle osteotomy knife. Background technique [0002] In order to achieve a specific tumor resection range and avoid transtumoral operations, some vertebral body appendage tumors need to be resected en bloc. This process often requires pedicle osteotomy. Traditional osteotomy knives often have no curvature design, and are prone to be affected by adjacent bone during osteotomy. The vertebral body and soft tissue are affected, and there is no blocking and depth-finding device, and the spinal cord and nerve roots are easily injured during osteotomy; while the operation of pedicle osteotomy using a wire saw is complicated, the osteotomy position is limited, and the spinal cord and nerve roots are injured during the operation. Nerve root risk is high and cannot meet the safety and effectiveness requirements. Contents of the invention [0003] Aiming at the deficiencies of the prior a...
Claims
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IPC IPC(8): A61B17/16
CPCA61B17/1657A61B17/1671
Inventor 郭征王财儒石磊李小康吴智钢
Owner FOURTH MILITARY MEDICAL UNIVERSITY