Production method for guide template

A template and guidance technology, applied in the field of medical devices, can solve the problems of easy error in vertebral body surface registration, long learning cycle, and high equipment requirements, and achieve the effects of reducing the risk of exposure infection, convenient disinfection, and convenient use

Active Publication Date: 2013-05-15
PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the positioning and navigation equipment for spinal pedicles is expensive, requires high equipment, takes a long learnin

Method used

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  • Production method for guide template
  • Production method for guide template
  • Production method for guide template

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only preferred implementations of the present invention, and are not limitations of the present invention.

[0036] 1. Materials and methods

[0037] 1. Materials

[0038] 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.

[0039] SIEMENS / Sensation 64-slice CT machine, scanning parameters: slice thickness 2mm, slice distance 2mm, tube voltage 120kV, current 225mAs, resolution 512*512pxl

[0040] 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 110-240...

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Abstract

The invention relates to a production method for a guide template. The production method comprises the following steps of: at first, importing CT (computed tomography) serial sectional image data into three-dimensional rebuilding software such as Mimics 10.01 for three-dimensional model rebuilding by CT scanning; then, designing a guide plate with vertebral pedicle positioning guide holes in the two sides of a single vertebral body on a digital lumbar vertebra anatomical model subjected to three-dimensional rebuilding; and finally, producing the template by a laser irradiation layer-by-layer curing and forming technology. The guide template produced by the method can be satisfactorily and closely combined with the vertebral body, can be used for accurately positioning and orienting vertebral pedicle, and guarantees the correct implantation position and direction of vertebral pedicle screws.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a method for preparing a guide template using computer-aided design technology, reverse engineering technology and rapid prototyping technology, and the guide template is used to assist the implantation of pedicle screws. 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 pedicle and reaches the ideal depth [LA...

Claims

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Application Information

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IPC IPC(8): A61B19/00A61B17/90A61B34/10
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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