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Scoliosis internal fixation correction device with 4D effect and preparation method thereof

A scoliosis and effect technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of inaccessibility, achieve the best effect of correcting spinal curvature, avoiding death and paraplegia

Active Publication Date: 2017-09-12
MEDPRIN REGENERATIVE MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of the existing technologies can meet the above three requirements

Method used

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  • Scoliosis internal fixation correction device with 4D effect and preparation method thereof
  • Scoliosis internal fixation correction device with 4D effect and preparation method thereof
  • Scoliosis internal fixation correction device with 4D effect and preparation method thereof

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preparation example Construction

[0068] Another aspect of the present invention relates to a preparation method of the above-mentioned scoliosis internal fixation correction device with 4D effect, which includes a 3D printing step.

[0069] As a preferred preparation method of the scoliosis internal fixation correction device with 4D effect of the present invention, it comprises the following steps:

[0070] (1) Prepare a nickel-titanium-based memory alloy material skeleton by 3D printing laser sintering printing technology, and after the nickel-titanium-based memory alloy material skeleton is cooled, design a radian and bend it;

[0071](2) By 3D printing fused deposition printing technology, deposit thermoplastic material on the nickel-titanium-based memory alloy material skeleton obtained in step (1) to prepare a thermoplastic material shell or separately prepare a thermoplastic material shell and then place the nickel-titanium-based memory alloy material skeleton Combined with a thermoplastic material she...

Embodiment 1

[0080] Obtain image data of the patient's spine through imaging technology, and use 3D virtual reconstruction technology to construct a 3D model of the patient's spine. According to the model, the radian of the scoliosis internal fixation correction device is determined.

[0081] Such as Figure 1-5 As shown, the interior of the scoliosis correction device is made of Ni 47.44 Ti 47.06 Pt 3 Nb 2.5 Skeleton and polyurethane thermoplastic shell construction, Ni 47.44 Ti 47.06 Pt 3 Nb 2.5 The volume ratio of polyurethane to thermoplastic material is 3:7, and the T of the polyurethane material f temperature is 47°C, the Ni 47.44 Ti 47.06 Pt 3 Nb 2.5 The skeleton includes a skeleton main body 1, which provides the restoring force of spinal correction; positioning hole 2, which can form a stable fit with the positioning pin of the thermoplastic material shell; fixing device 3, which is used to fix the correction device on the spine, ribs or fixing nails during the operati...

Embodiment 2

[0090] Similar to Embodiment 1, determine the radian of the scoliosis internal fixation correction device.

[0091] Such as Figure 1-5 As shown, the interior of the scoliosis correction device is made of Ni 46.3 Ti 46.2 PD 4 Cu 3.5 The skeleton is composed of a blend of thermoplastic polyethylene and polyamide (the mass ratio of PE to PA is PE:PA=20:80), Ni 46.3 Ti 46.2 PD 4 Cu 3.5 The volume ratio with the blend is 7:10, the T of the blend f temperature is 50°C, the Ni 46.3 Ti 46.2 PD 4 Cu 3.5 The skeleton includes a skeleton main body 1, which provides the restoring force of spinal correction; positioning hole 2, which can form a stable fit with the positioning pin of the thermoplastic material shell; fixing device 3, which is used to fix the correction device on the spine, ribs or fixing nails during the operation, The exterior of the scoliosis correction device is wrapped with expanded polytetrafluoroethylene.

[0092] The preparation steps of the scoliosis c...

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Abstract

The invention relates to a scoliosis internal fixation correcting device with a 4D effect and a production method thereof. The scoliosis internal fixation correcting device comprises a functional unit. The functional unit comprises a framework made of nickel-titanium-based memory alloy materials and a shell made of thermoplastic materials. The framework comprises a framework body, positioning holes distributed in the framework body and fixing devices distributed along the length direction of the framework body. The contour of the shell follows the contour of the framework. The shell wraps the framework. The shell is provided with positioning pins stably matched with the positioning holes.

Description

technical field [0001] The invention relates to a scoliosis internal fixation correction device with 4D effect and a preparation method thereof. Background technique [0002] Scoliosis, also known as scoliosis, is a deformity located in the coronal, sagittal and axial positions of the spine. Scoliosis often causes trunk deformation and decreased cardiopulmonary function to patients, which is unfavorable for survival, employment and marriage. Domestic census data show that the incidence rate of scoliosis among domestic teenagers is 1.06%. Literature shows that the adult incidence rate is 1.4%-12%, of which 6% of the elderly over 60 years old have scoliosis greater than 7°, and 36% of osteoporosis patients have spinal deformity. [0003] In the early 1960s, Dr. Harrington invented the Harrington rod and was the first to use it in the surgical treatment of scoliosis. In recent decades, with the efforts of the medical community and leading companies in the industry, from Hast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70
CPCA61B17/70A61B2017/00743A61B2017/00867
Inventor 王国帅袁玉宇
Owner MEDPRIN REGENERATIVE MEDICAL TECH
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