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Method for rapidly preparing intraoperative individual covered stent for treating aortic arch dissection

An aortic arch and stent-graft technology, applied in the field of biomedical engineering, can solve the problems of inability to popularize in grass-roots hospitals, many complications, and time-consuming, and achieve the advantages of shortening the time of deep hypothermic circulatory arrest, reducing serious complications, and shortening operation time. Effect

Inactive Publication Date: 2018-03-27
严中亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of difficult operation of Stanford type A aortic arch dissection, complicated operation, long time-consuming, large trauma, frequent bleeding, many complications, high cost, and cannot be popularized in primary hospitals, etc., to provide a rapid preparation for Intraoperative individualized stent-graft method for the treatment of aortic arch dissection

Method used

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  • Method for rapidly preparing intraoperative individual covered stent for treating aortic arch dissection
  • Method for rapidly preparing intraoperative individual covered stent for treating aortic arch dissection
  • Method for rapidly preparing intraoperative individual covered stent for treating aortic arch dissection

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A process for quickly preparing an intraoperative individualized stent graft for the treatment of aortic arch dissection is as follows: figure 1 Shown:

[0040] 1. Model reconstruction

[0041] Equipment used Discovery CT 750HD (GE Company, the United States) 64 multi-slice spiral CT scanner. The patient was placed in the supine position and breath-holding. First, a non-enhanced CT sequence (0.625mm slice thickness) was obtained. A 22G venous indwelling needle was punctured into the cubital vein, and iohexol (onepaque, containing Iodine 350mg I / mL) 100mL, monitor the peak value of the drug, and delay 6-8s after reaching the peak value. The target area starts from the root of the neck and goes down to the pubic symphysis. The scanned data are exported in DICOM format and imported into Mimics 19.0 software for 3D reconstruction of the aortic arch dissection. The extraction range includes the entire aorta. The surface of the model is smooth and modified, and exported in ...

Embodiment 2

[0049] A process for quickly preparing an intraoperative individualized stent graft for the treatment of aortic arch dissection is as follows: figure 1 Shown:

[0050] 1. Model reconstruction

[0051] Equipment used Discovery CT 750HD (GE Company, the United States) 64 multi-slice spiral CT scanner. The patient was placed in the supine position and breath-holding. First, a non-enhanced CT sequence (0.625mm slice thickness) was obtained. A 22G venous indwelling needle was punctured into the cubital vein, and iohexol (onepaque, containing Iodine 350mg I / mL) 100mL, monitor the peak value of the drug, and delay 6-8s after reaching the peak value. The target area starts from the root of the neck and goes down to the pubic symphysis. The scanned data are exported in DICOM format and imported into Mimics 19.0 software for 3D reconstruction of the aortic arch dissection. The extraction range includes the entire aorta. The surface of the model is smooth and modified, and exported in ...

Embodiment 3

[0059] A process for quickly preparing an intraoperative individualized stent graft for the treatment of aortic arch dissection is as follows: figure 1 Shown:

[0060] 1. Model reconstruction

[0061] Equipment used Discovery CT 750HD (GE Company, the United States) 64 multi-slice spiral CT scanner. The patient was placed in the supine position and breath-holding. First, a non-enhanced CT sequence (0.625mm slice thickness) was obtained. A 22G venous indwelling needle was punctured into the cubital vein, and iohexol (onepaque, containing Iodine 350mg I / mL) 100mL, monitor the peak value of the drug, and delay 6-8s after reaching the peak value. The target area starts from the root of the neck and goes down to the pubic symphysis. The scanned data are exported in DICOM format and imported into Mimics 19.0 software for 3D reconstruction of the aortic arch dissection. The extraction range includes the entire aorta. The surface of the model is smooth and modified, and exported in ...

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Abstract

The invention belongs to the field of biomedical engineering, and particularly relates to a method for rapidly preparing an intraoperative individual covered stent for treating aortic arch dissection.The method comprises the following steps: copying a pathologically changed aortic arch of a patient in a proportion of 1: 1 by using a 3D printing technology through CT image data of the patient; marking a blood vessel branch opening, position and size of the aortic arch on a transparent diaphragm by using an aorta 3D model; taking a covered main stent, covering the covered main stent by using amarked sheet, and successively forming holes in positions corresponding to branched blood vessels; and selecting small covered stents of which the diameters are matched with the diameters of the holesof the stent, and separately stitching the small covered stents to the various holes to obtain the individual covered stent which is completely matched with the patient. The purpose of accurately treating Stanford A type aortic arch dissection can be achieved, individual treatment is implemented, time of operation is saved, hemorrhage during operation is relieved, and postoperative complicationsare greatly reduced.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and in particular relates to a method for quickly preparing an intraoperative individualized covered stent for treating aortic arch dissection. Background technique [0002] Aortic dissection (AD) is a rare and serious cardiovascular emergency, characterized by sudden onset, rapid disease progression, and high mortality in the acute phase. The mortality rate of untreated Standford type A aortic arch dissection is as high as 80%. Due to the variable anatomical shape of the aorta, numerous branch vessels, and the complex factors of the disease itself, there are many difficulties in the treatment. [0003] Aortic arch replacement is an important part of the treatment of Stanford type A aortic arch dissection. The purpose of surgical treatment is to replace the diseased aortic arch and its branch vessels with artificial blood vessels, so as to ensure the blood supply to the whole body. The clas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07B33Y10/00B33Y50/00B33Y80/00
CPCA61F2/07A61F2002/072A61F2240/002B33Y10/00B33Y50/00B33Y80/00
Inventor 严中亚
Owner 严中亚
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