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Single-side pedicle screw-driving auxiliary device and manufacturing method thereof

A pedicle screw and auxiliary device technology, applied in the field of medical equipment, can solve the problems of easy error in the registration of the vertebral body surface, long learning period, and high requirements for equipment, so as to reduce the risk of exposure infection, convenient disinfection, and convenient use Effect

Active Publication Date: 2013-05-15
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

However, the positioning and navigation equipment for spinal pedicles is expensive, requires high equipment, takes a long learning period, and is prone to errors when registering on the surface of the vertebral body. Nail setting method with equal advantages

Method used

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  • Single-side pedicle screw-driving auxiliary device and manufacturing method thereof
  • Single-side pedicle screw-driving auxiliary device and manufacturing method thereof
  • Single-side pedicle screw-driving auxiliary device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 The structure of the auxiliary device for unilateral pedicle screw insertion

[0042] Such as Figure 6 and Figure 7 As shown, the unilateral pedicle screw screw driving auxiliary device of the present invention includes: a guide hole 1, a sleeve 2, a first clip 3, a second clip 4, a torsion spring 5, and a transverse shaft 6, wherein the guide The hole 1 is connected to the bottom 31 of the first clip, the middle part of the first clip and the second clip has connecting pieces 32 and 42, the connecting pieces have holes, and the transverse axis 6 passes through the hole of the connecting piece of the first clip and the torsion spring in sequence 5 and the hole of the second clip. The angle α between the first clip and the second clip is preferably 25°-65°.

[0043] The bushing 2 includes a bushing head 21 and a bushing body 22 , the bushing head is directly connected to the bushing body, wherein the hole on the bushing head 21 communicates with the inn...

Embodiment 2

[0044] Example 2 Preparation of unilateral pedicle screw screw insertion aid

[0045] 1. Materials and methods

[0046] 1. Materials

[0047] One normal adult isolated lumbar vertebral dry bone specimen treated with 10% formalin was taken, and its attached soft tissue structures were dissected and removed. The specimens were provided by the Department of Anatomy, Peking Union Medical College.

[0048] SIEMENS / Sensation 64-slice CT machine, scanning parameters: slice thickness 2mm, slice distance 2mm, tube voltage 120kV, current 225mAs, resolution 512*512pxl

[0049] Objet EDEN250 3D reconstruction printer, technical parameters: molding resolution X-axis: 600dpi: 42u, Y-axis: 300dpi: 84u, Z-axis: 1600dpi: 16u, accuracy 0.1-0.2mm (accuracy depends on object shape, part use and printing size ), power supply 110-240VAC50 / 60Hz1.5KW, operating environment 18-25℃, relative humidity 30%-70%

[0050] FullCure720: Objet's medical transparent molding material.

[0051] 2. Method

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Abstract

The invention relates to a single-side pedicle screw-driving auxiliary device and a manufacturing method thereof. The device comprises a guide hole, a sleeve, a first clamping piece, a second clamping piece, a cross shaft and a torsion spring. The invention also discloses the manufacturing method of the device. The manufacturing method comprises the following steps of: firstly, acquiring three-dimensional data of a vertebral body through CT (computed tomography) scanning, and three-dimensionally constructing a three-dimensional model of the vertebral body; secondly, fitting the clamping pieces which are complementary with anatomic form curved surfaces of a cone plate and an acantha by using engineering software; and finally, producing the device by using a rapid forming technology. The single-side pedicle screw-driving auxiliary device has the beneficial effects of being convenient and simple to use, shortening the average operation time, improving the efficiency, reducing the risk of exposure infection, avoiding traction injuries to surrounding tissues, and the like.

Description

technical field [0001] The present invention relates to the field of medical devices, in particular to a unilateral pedicle screw screw-driving auxiliary device and a preparation method thereof. The screw-driving auxiliary device is prepared by using computer-aided design technology, reverse engineering technology and rapid prototyping technology. Background technique [0002] With the updating and development of technology, pedicle internal fixation technology is gradually applied in the surgical treatment of spinal diseases such as degenerative spinal lesions, slippage, spinal stenosis, vertebral fractures, deformities, bone metastases, and spinal instability. It has played an indelible role in the development and progress of spine surgery. [0003] Biomechanical experiments have proved that the stability of the screw-rod system and the ideal clinical efficacy can only be guaranteed if the screw is accurately placed along the only anatomical long-axis channel of the pedicl...

Claims

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Application Information

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IPC IPC(8): A61B17/90A61B19/00A61B34/10
Inventor 吴志宏王以朋孙小虎邱贵兴
Owner PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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