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Atrioventricular valve bracket of artificial valve of dual discal straps

A valve atrioventricular and disc-shaped technology, which is applied in the field of double disc-shaped atrioventricular valve stent devices with artificial valve, can solve the problems such as the failure of the ventricular disc surface to be fully opened smoothly, the difficulty of suturing the valve on one plane, and the increased difficulty of suturing. , to avoid conduction block, easy to insert catheter, easy to obtain the effect of

Inactive Publication Date: 2007-12-26
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The present invention is to provide a double disc-shaped atrioventricular valve support with artificial valves, which is used to solve the problem that the existing tricuspid valve support with valves will cause the ventricular disc surface to not be fully opened smoothly, or affect the right ventricular outflow tract after opening; and The very soft bovine vein valve is sutured directly on the tube wall, not only the difficulty of suturing is increased, but also the valve is difficult to suture on a plane, which affects the normal opening and closing function; In the case of contraction, the metal wire is easy to break, which affects the technical problems of the curative effect, and the stent is convenient to obtain materials, easy to manufacture, small in size, easy to transport, and its function is close to the physiological state

Method used

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  • Atrioventricular valve bracket of artificial valve of dual discal straps
  • Atrioventricular valve bracket of artificial valve of dual discal straps
  • Atrioventricular valve bracket of artificial valve of dual discal straps

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Embodiment

[0028] The double-disc stent 1 is made of nickel-titanium shape memory alloy wire with a diameter of 0.18mm. It is woven with a netting mold first, and then pressed with a stent mold after weaving, heat-treated, and finally shaped. The diameter of the right chamber surface 1.1 is 30mm. , the diameter of the waist is 20mm, the length of the waist is 1.2 and 10mm, and the surface of the chamber is 1.3 and the diameter is 30mm.

[0029]The wavy valve stent 2.1 is made of a single-strand nickel-titanium shape memory alloy wire with a diameter of 0.25mm, and is folded into three identical arc-shaped structures with an arc length of 28mm by using a valve ring mold. Valve leaflet 2.2 was made of fresh sheep pericardium, surface impurities were removed as usual, cells were digested with 0.25% trypsin, soaked in 0.6% glutaraldehyde for 48 hours, rinsed repeatedly with PBS solution, and the prepared valve mold was used to place The pericardium is trimmed into three leaflets of the same ...

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Abstract

The present invention relates to a kind of bidiscoid antrioventricular valve scaffold with artificial valve. Said bidiscoid scaffold is made up by using shape memory alloy filament through a certain weaving process. It is divided into right atrial discoid face, intermediate waist portion and right ventricular discoid face, the right atrial discoid face and right ventricular discoid face are made into the form of horn mouth, the diameter of said horn mouth is greater than that of intermediate waist portion, the height of the waist portion is half of diameter of waist portion, the diameter of right atrial discoid face is identical to that of right ventricular discoid face, and said valve is formed from wave-shaped valve ring and valve leaf. Besides, said invention also provides the concrete structure of said wave-shaped valve ring and valve leaf.

Description

technical field [0001] The invention relates to a cardiac atrioventricular valve support, in particular to a double-disk atrioventricular valve support device with artificial valves. Background technique [0002] Tricuspid valve disease is a clinically common heart valve disease. Tricuspid regurgitation is far more common than tricuspid stenosis, and functional tricuspid regurgitation is the most common clinically. At present, surgery is still the main method for the treatment of functional tricuspid regurgitation, and its fundamental principle is to reduce the enlarged tricuspid annulus. Among the various surgical procedures, tricuspid annuloplasty is the main one. Tricuspid valve replacement is not only likely to cause conduction block, but also has poor long-term effect, and the mechanical valve also involves many inconveniences such as postoperative anticoagulation. There are fewer applications. The technique of tricuspid annuloplasty or replacement surgery is relative...

Claims

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Application Information

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IPC IPC(8): A61F2/24A61F2/82A61L27/38A61L27/04
Inventor 秦永文白元宗刚军龚善石
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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