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Forming system for preparing bionic scaffold

A technology of bionics and support seat, applied in the direction of additive processing, etc., can solve the problem of the mismatch between the shape and size of the stent and the lesion, and achieve the effect of saving raw materials, simplifying the process, and saving processing time

Pending Publication Date: 2018-08-24
上普博源(北京)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a molding system for preparing bionic stents to overcome many complications caused by the mismatch between the existing stents and the shape and size of the lesion

Method used

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  • Forming system for preparing bionic scaffold
  • Forming system for preparing bionic scaffold
  • Forming system for preparing bionic scaffold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1, the preparation of columnar PLLA (poly-L-lactic acid) coronary artery stent

[0050] The raw material is PLLA, and the specific steps are as follows: Image 6 Shown:

[0051] 1) A patient suffers from severe blockage of the coronary arteries, and the length, diameter, stenosis and other information of the lesion are measured by coronary angiography quantitative analysis technology (QCA technology), and the layered slice data of the lesion is obtained.

[0052] 2) Use the 3D modeling software Mimics to process the obtained layered slice data of the lesion and complete the 3D reconstruction. The shape and structure parameters of the bionic stent matching the lesion can be obtained: the coronary artery lesion is close to cylindrical, and the blood vessel The bracket is 3mm and the length is 13mm.

[0053] 3) Combining with the shape and structure parameters of the bionic stent (3mm in diameter and 13mm in length), carry out the design of the supporting unit...

Embodiment 2

[0062] Embodiment 2, the preparation of tapered PLLA coronary artery stent

[0063] The raw material is PLLA, and the specific steps are as follows: Image 6 Shown:

[0064] 1) A patient suffers from severe blockage of the coronary arteries. Optical coherence tomography (OCT) technology is used to measure the length, diameter, stenosis and other information of the lesion to obtain layered slice data of the lesion.

[0065] 2) Use the 3D modeling software Mimics to process the obtained layered slice data of the lesion and complete the 3D reconstruction. The shape and structure parameters of the bionic stent matching the lesion can be known: the coronary artery lesion is close to the cone shape, and the near The inner diameter of the heart vessel is 4mm, the inner diameter of the distal vessel is 2.5mm, and the length is 20mm.

[0066] 3) Combined with the shape and structure parameters of the bionic stent (the inner diameter of the proximal vessel is 4mm, the inner diameter o...

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Abstract

The invention relates to a forming system for preparing a bionic scaffold. The forming system comprises a base, a planar motion mechanism, a jet printing mechanism and a rotary motion mechanism. The planar motion mechanism is arranged on the base. The jet printing mechanism is arranged on the planar motion mechanism and can do planar motion along the planar motion mechanism. The rotary motion mechanism is arranged in the position, located below the jet sprinting mechanism, of the base. The rotary motion mechanism is used for mounting a bionic scaffold mold and driving the bionic scaffold moldto do circular motion. Different from the traditional scaffold processing subtractive manufacturing technology, the scaffold is prepared through the 3D printing technology, raw materials can be saved,the process can be simplified, the processing time is shortened, and personalized customization is facilitated better. Meanwhile, different with a traditional XYZ triaxial printing platform layeringmanufacturing method, the XZR triaxial forming system provided by the invention is more beneficial to preparation of the thin-walled porous bionic scaffold and can achieve printing of the bionic scaffold through an XY rectilinear motion axis and R rotary motion axis triaxial motion platform.

Description

technical field [0001] The invention relates to a molding system for preparing a bionic bracket, which belongs to the field of bracket manufacturing in medical instruments. Background technique [0002] Interventional therapy is an effective means to treat stenosis in organs with a lumen structure caused by lesions in the human body. Among them, stenting plays a very important role in interventional therapy. The parts where stenting is applied include cardiovascular and cerebrovascular, peripheral blood vessels, urethra, and esophagus. , biliary tract, trachea, etc. The stents currently on the market are mainly metal stents, and the dimensions (length, diameter) have been standardized, and the stents are all cylindrical (equal cross-section). There are also variations between different lesion sites in different patients, so the standardized cylindrical stents currently on the market do not take into account the differences in lesion sites. In particular, taking the most wi...

Claims

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Application Information

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IPC IPC(8): B29C64/20B33Y30/00
CPCB29C64/20B33Y30/00
Inventor 孙伟赵雨
Owner 上普博源(北京)生物科技有限公司