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A device for convenient positioning of pedicle screws

A pedicle screw, a convenient technology, applied in the field of medical devices, can solve problems such as easy to cause medical accidents, positioning devices and systems rely on navigation functions, and have no physical depth-limiting function, so as to achieve reasonable structure, improve success rate, and ensure safety Effect

Active Publication Date: 2022-07-08
PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing positioning devices and systems rely too much on the set navigation function and do not have a physical depth limit function. If the medical staff makes a positioning error or the machine itself fails, it may easily cause medical accidents

Method used

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  • A device for convenient positioning of pedicle screws
  • A device for convenient positioning of pedicle screws
  • A device for convenient positioning of pedicle screws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Please refer to Figure 1-14 , a device for convenient positioning of pedicle screws in this embodiment, which includes a mechanical arm, a depth-limiting structure, a target structure 2 and a fixed clamping structure; the first end of the depth-limiting structure is fixed on the first end of the mechanical arm, and the limit The second end of the deep structure is movably connected to the second end of the mechanical arm; the fixed clamping structure is fixedly connected to the mechanical arm; the target structure 2 is detachably connected to the fixed clamping structure. This setting installs the original holding target structure 2 to the fixed clamping structure and integrates it into the manipulator. According to the planned navigation of the manipulator, measure the length of the vertebral body from the insertion point to the front of the vertebral body. The setting is smaller than this value. The depth limit structure can ensure the safety of patients.

Embodiment 2

[0059] Please refer to figure 1 , 9, on the basis of Embodiment 1, this embodiment adds the following technical features: (the following specific settings are performed on the depth-limiting structure): the depth-limiting structure includes two integrally connected telescopic rods and a moving ring 1; Ring 1 is fixedly connected.

[0060] The two sections of telescopic rods respectively include an inner rod 3 and an outer sleeve 4, and the outer sleeve 4 is located on the outside of the inner rod 3 and can slide relative to the inner rod 3; the two inner rods 3 of the two sections of telescopic rods are fixedly connected, and the two inner rods 3 Reinforcing rods are arranged between the sides, and the angle between the two inner rods 3 is between 120 degrees and 150 degrees. This setting can ensure the limit strength of the telescopic rods.

[0061] At least one threaded hole is respectively provided on the side of the two outer sleeves 4, and a suitable bolt is installed in...

Embodiment 3

[0066] Please refer to Figure 1-8 , On the basis of Embodiment 1-2, this embodiment adds the following technical features (the following specific settings are made to the fixed clamping structure): the fixed clamping structure includes a clamping part and a clamp shell 7; the clamp shell 7 and the clamping part The central setting ensures the passage into the target structure 2; the clamping part is combined and connected with the fixture shell 7, and the clamping part includes a plurality of clamping jaws 6 that can hold the target structure 2 tightly, and realizes the clamping and loosening of the clamping jaws 6. Operating structure ; Drive the gripper 6 to grasp the target structure 2 by controlling the operating structure.

[0067] The clamp shell 7 is cylindrical, with a cylindrical cavity inside, and the cylindrical cavity accommodates the operating structure and the clamping jaws 6 ; this arrangement ensures the protection effect on the operating structure and the cla...

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Abstract

The invention relates to a device for convenient positioning of pedicle screws, which comprises a mechanical arm, a depth-limiting structure, a positioning pin and a fixed clamping structure; the first end of the depth-limiting structure is fixed on the first end of the mechanical arm, and the depth-limiting structure The second end is movably connected with the second end of the mechanical arm; the fixed clamping structure is fixedly connected with the mechanical arm; the positioning pin is detachably connected with the fixed clamping structure; the positioning pin handle is provided with an arc-shaped groove; The depth-limiting structure includes two integrally connected telescopic rods and a moving ring; this setup installs the original holding-type positioning pin on the fixed clamping structure and integrates it into the robotic arm, and navigates and measures the vertebral body from the nail into the manipulator according to the planning of the robotic arm. What is the length from the point to the front edge of the vertebral body, and setting the depth limit structure smaller than this value can ensure the safety of the patient.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for conveniently positioning a pedicle screw. Background technique [0002] Spinal internal fixation systems can provide grip for operations such as spinal corrections and help restore spinal stability, which are crucial in spinal surgery. The pedicle screw device can provide powerful three-dimensional holding force and is the most commonly used spinal internal fixation system. It is widely used in spinal surgery decompression and fixation and deformity correction surgery. The pedicle screw needs to pass through the pedicle and reach the front of the vertebral body, adjacent to important structures: there are important structures such as the spinal cord and nerve roots around the pedicle, and there are important structures such as large blood vessels on the anterolateral side of the spine. The location of the pedicle screw Poor performance can lead t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/90A61B17/70A61B34/20A61B34/30A61B90/00
CPCA61B17/88A61B17/7091A61B34/20A61B34/70A61B90/06A61B2090/061A61B2034/306
Inventor 杜悠王升儒仉建国赵钇伟余伟杰李芷仪杨阳林莞锋徐薇
Owner PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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