Pedicle screw
A pedicle screw and screw seat technology, applied in the field of pedicle screws, can solve the problems of increasing the difficulty of surgery and complicated operation process
Active Publication Date: 2013-04-03
SHANGHAI SANYOU MEDICAL CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0007] In the rod loading, rod pressing and reduction orthopedic operations, the operation process using the pedicle screws and corresponding instruments in the prior art is very complicated, thus increasing the difficulty of the operation
Method used
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Embodiment Construction
[0026] A core of the present invention is to provide a pedicle screw, which provides convenience for rod mounting, rod pressing, and reduction and correction.
[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] Please refer to figure 2 , image 3 with Figure 4 , figure 2 It is the front view of the pedicle screw provided by the present invention; image 3 for figure 2 Side view of the pedicle screw shown; Figure 4 for figure 2 The illustrated three-dimensional cross-sectional view of the pedicle screw shows a schematic diagram of the three-dimensional structure of the remaining part of the pedicle screw after longitudinal sectioning.
[0029] The pedicle screw provided by the present invention includes a nail body 8 and a nail seat 7. The tail of the nail seat 7 is provided with a groov...
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The invention provides a pedicle screw. The pedicle screw comprises a screw body and a screw seat connected with the screw body, wherein the screw seat is equipped with a groove, and the inner side wall of the groove is equipped with an internal thread; the pedicle screw further comprises a tail tube, wherein the inner end of the tail tube is connected with the tail end surface of the screw seat;the extension direction of the tail tube is opposite to that of the screw body; the inner diameter of the tail tube is not less than the outer diameter of an internal thread; the tube wall of the tail tube is equipped with two stick penetration grooves which are oppositely arranged and communicated with a center hole of the tail tube respectively; and the stick penetration grooves stretch along the direction of a center line of the tail tube, and the inner ends of the stick penetration grooves are communicated with the grooves. By adopting the pedicle screw provided by the invention, operations can be conveniently conducted. In addition, the invention further provides a pedicle screw comprising a stick pressing device.
Description
Technical field [0001] The invention relates to spinal surgery equipment, in particular to a pedicle screw. Background technique [0002] Surgical treatment of spinal deformity through spinal internal fixation technology has a history of decades; from the adoption of spinal internal fixation technology in my country in the 1980s, from the original Harrington (Harrington rod) technique to the Luque sublaminar in the 1970s Wire fixation, and then to the CD internal fixation system, the spinal internal fixation technology has been greatly improved. In recent years, with the development of spinal biomechanics research and material science, spinal internal fixation technology has been widely used in surgical treatment of spinal degenerative diseases, spinal tumors, trauma and even spinal infections. [0003] Instruments used in spinal internal fixation surgery include pedicle screws, rods, rod presses, frog forceps, swing forceps, etc. First fix the pedicle screw on the vertebral body,...
Claims
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IPC IPC(8): A61B17/70A61B17/86
Inventor 邱勇
Owner SHANGHAI SANYOU MEDICAL CO LTD