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Vena cava cannula with umbrella-shaped ring

A vena cava and snare technology, applied in the field of medical devices, to achieve the effect of reducing mortality, reducing risk, and reducing the chance of heart damage

Inactive Publication Date: 2012-05-30
DALIAN CHUANGDA TECH TRADE MARKET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technical scheme adopted in the present invention has not been reported both at home and abroad

Method used

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  • Vena cava cannula with umbrella-shaped ring
  • Vena cava cannula with umbrella-shaped ring
  • Vena cava cannula with umbrella-shaped ring

Examples

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Embodiment Construction

[0017] The vena cava cannula with descending sleeve is divided into two parts: an umbrella-like snare made of soft elastic medical silicone; the vena cava cannula. The two parts can be produced as a whole, or produced separately, and assembled as needed by the cardiac surgeon on the operating table. Its working principle is: the mouth of the umbrella-like snare opens to the distal end of the cannula. When in use, because the outer diameter of the umbrella is larger than the inner diameter of the vena cava and there is a certain tension, when the cannula enters the vena cava from the right atrium, Can support the inner wall of the vein in the vena cava, thereby blocking the return of venous blood. It is also possible to cut the right atrium after intubation and block the aorta, and fold the opening of the umbrella toward the proximal end of the cannula so that the opening of the umbrella faces the vena cava to block the return of venous blood to the right atrium.

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Abstract

An umbrella-shaped ring and a vena cava cannula are made of medical soft elastic silica gel in a bioengineering technology. Stopping surgical procedures of the vena cave due to adhesion among the free heart vena cava, the right atrium and the heart sac and the winding of the superior vena cava and the inferior vena cava are avoided in a heart operation, the problem that the vena cava is difficult to free and wind during a first heart operation is solved, vena cava blood is stopped inside the vena cava from flowing back to the right atrium during the heart operation, and thus, the operation is greatly simplified, the operation time is shortened, and complications and the death rate of the heart operation are reduced.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a vena cava catheter with an umbrella-shaped snare. Background technique [0002] With the improvement of the overall level of cardiac surgery, some patients may have to undergo cardiac surgery multiple times, such as staged correction of complex congenital heart disease; coronary artery bypass surgery (bypass surgery) after coronary atherosclerotic heart disease Or multiple bypass operations: valve replacement after closed dilation for mitral valve stenosis or valve replacement for valve disease after valve damage (such as biological valve damage) and valve surgery-related complications require valve replacement surgery again, etc. . Since these patients have undergone heart surgery, there are extensive adhesions in the pericardial cavity, especially at the atrium-vena cava, and extracorporeal circulation needs to be established for reoperation. When establishing extracorporeal ...

Claims

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Application Information

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IPC IPC(8): A61B17/00
Inventor 杜冲
Owner DALIAN CHUANGDA TECH TRADE MARKET
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