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Suture-free integrated branch covered stent blood vessel

A covered stent and integrated technology, applied in the field of medical devices, can solve the problems of increased death, time-consuming vascular anastomosis, increased cerebral ischemia time, etc., and achieve the effect of reducing operation time and hemostasis operation time

Active Publication Date: 2019-01-18
DALIAN CORVIVO MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the artificial blood vessel-covered stent graft, due to the pressure of the blood flow in the blood vessel, there is often the problem of blood leakage from the pinhole of the anastomosis. In addition, the time-consuming anastomosis of the blood vessel also increases the time of cerebral ischemia. Major causes of complications and increased mortality

Method used

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  • Suture-free integrated branch covered stent blood vessel
  • Suture-free integrated branch covered stent blood vessel
  • Suture-free integrated branch covered stent blood vessel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A suture-free integrated branch covered stent blood vessel, such as figure 1 As shown, the suture-free integrated branch stent-graft blood vessel includes an artificial blood vessel made of polytetrafluoroethylene, a stent-graft, and a compression ring assembly;

[0024] The artificial blood vessel includes an artificial blood vessel main branch 11 and two artificial blood vessel branches 12, and the two artificial blood vessel branches 12 respectively extend outward from the artificial blood vessel main branch 11 and are in fluid communication with the artificial blood vessel main branch 11;

[0025] The stent graft includes a stent and a membrane 23 made of nickel-titanium alloy;

[0026] Said membrane 23 is sewn within the frame;

[0027] The stent includes a stent main branch 21 and a stent branch 22, the stent branch 22 extends outward from the stent main branch 21 and is in fluid communication with the stent main branch 21;

[0028] The distal end of the main b...

Embodiment 2

[0033] The method of using the suture-free integrated branch covered stent graft described in embodiment 1, the method of using comprises the following steps:

[0034] When performing aortic arch replacement, the midsection of the patient's aortic arch needs to be resected;

[0035] Such as figure 2 As shown, part of the covered stent is placed into the aortic cavity, and the covered stent supports the aortic wall;

[0036] Such as image 3 As shown, the bondage of the free end of the pressure ring 33 is removed, and the free end of the pressure ring 33 is displaced from the outer wall of the main branch of the artificial blood vessel 11 to the outer wall of the autologous blood vessel. Under the simultaneous action of the internal radial pressure and the radial support force of the main branch 21 of the stent to the outside of the blood vessel, the autogenous blood vessel and the main branch 21 of the stent fit closely to prevent blood from seeping out;

[0037] After the ...

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Abstract

The invention relates to a suture-free integrated branch covered stent blood vessel, and belongs to the technical field of medical instruments. The suture-free integrated branch covered stent blood vessel comprises an artificial blood vessel, a membrane-covered stent and a pressure re assembly; The distal end of the artificial blood vessel is connected with the proximal end of the covered stent. The pressure ring assembly comprises a pressure ring and a fixing member. The outer wall of the artificial blood vessel is provided with a fixing part. One end of the pressure ring is movably connectedto the fixing member so that the pressure ring can change the position of the pressure ring relative to the artificial blood vessel around the fixing member. The suture-free integrated branch coveredstent blood vessel use that elasticity of the compression ring to clamp and seal the anastomotic stoma and avoid the anastomotic stoma suture method in artificial blood vessel replacement operation,so as to achieve the effect of hemostasis and reducing the operation time.

Description

technical field [0001] The invention relates to a suture-free integrated branch covered stent blood vessel, which belongs to the technical field of medical instruments. Background technique [0002] Artificial blood vessel-covered stent grafting is an important method for the treatment of aortic dissection and other large vessel diseases. After the artificial blood vessel-covered stent graft, due to the pressure of the blood flow in the blood vessel, there is often the problem of blood leakage from the pinhole of the anastomosis. In addition, the time-consuming anastomosis of the blood vessel also increases the time of cerebral ischemia. Complications and increased mortality are the main causes. Therefore, hemostasis at the anastomosis is always an urgent problem to be solved in the artificial blood vessel-stent-graft transplantation, and a more effective, practical and simple way is needed to achieve the purpose of hemostasis at the anastomosis. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): A61F2/06A61F2/07
CPCA61F2/06A61F2/07A61F2210/0014
Inventor 卞晓明钱向阳杨延宗夏云龙徐庶郑成福
Owner DALIAN CORVIVO MEDICAL CO LTD
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