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Aortic valve mechanical valve with two differently-sized valve leaflets

A technology of aortic valve and mechanical valve, which is applied in the field of medical devices, can solve the problems of shear force damage to blood components, easy to cause blood clots, bleeding, and limit the effective area of ​​the valve orifice, etc., to achieve simple and clear valve leaflet activity, The effect of simple structure and large opening area

Inactive Publication Date: 2015-06-03
THE FIRST AFFILIATED HOSPITAL OF GUANGXI MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In use, there are still many defects: ①The joint grooves of the double leaflets are all set in the ring wall, so that the double leaflets can open and close in a cylindrical shape, and the shear force generated by the leaflet joints and leaflet activities It will cause damage to blood components and easily cause blood clots, bleeding and other events; ②The cylindrical design limits the effective area of ​​the valve orifice, causing negative obstacles and negatively affecting the systolic function of the myocardium; ③The double leaflet mechanical valve in the cylindrical shape With three beams of blood flow, it has a negative effect on blood flow and increases energy consumption

Method used

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  • Aortic valve mechanical valve with two differently-sized valve leaflets
  • Aortic valve mechanical valve with two differently-sized valve leaflets
  • Aortic valve mechanical valve with two differently-sized valve leaflets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a mechanical valve of a large aortic valve with two leaflets unequal, which includes a double leaflet valve 1, a backing ring 2, a valve ring 3, an angle limiting valve 6 and a leaflet joint 7. The lining ring 2 is installed outside the valve ring 3, and the lining ring 2 and the valve ring 3 are circular. The leaflet joints 7 are arranged on two end surfaces of the axis of the valve annulus 3 , and the angle limiting valves 6 are arranged on both sides of the two leaflet joints 7 in pairs. The angle limiting valve 6 limits the opening angle of the bilobes 1 to 82°. The double-leaf valve 1 is jointed with the two leaflets and arranged on the surface of the valve annulus 3. When the double-leaf valve 1 is opened, the blood flow can be in the form of a central axis. Double leaflet 1 is set as large leaflet 4 and small leaflet 5 with unequal areas. The ratio of the area of ​​large leaflet 4 to small leaflet 5 is 6:4. Staggered activity. The d...

Embodiment 2

[0028] Such as figure 1 As shown, a mechanical valve of a large aortic valve with two leaflets unequal, which includes a double leaflet valve 1, a backing ring 2, a valve ring 3, an angle limiting valve 6 and a leaflet joint 7. The lining ring 2 is installed on the outer side of the valve ring 3, and the lining ring 2 and the valve ring 3 are in an oval shape. The leaflet joints 7 are arranged on two end surfaces of the axis of the valve annulus 3 , and the angle limiting valves 6 are arranged on both sides of the two leaflet joints 7 in pairs. The angle limiting valve 6 limits the opening angle of the bilobes 1 to 80°. The double leaflet 1 is respectively connected with two leaflet joints 7 and arranged on the surface of the valve ring 3. When the double leaflet 1 is opened, the blood flow can be in the form of a central axis. Double leaflet 1 is set as large leaflet 4 and small leaflet 5 with unequal areas. The ratio of the area of ​​large leaflet 4 to small leaflet 5 is 6...

Embodiment 3

[0031] Such as figure 1 As shown, a mechanical valve of a large aortic valve with two leaflets unequal, which includes a double leaflet valve 1, a backing ring 2, a valve ring 3, an angle limiting valve 6 and a leaflet joint 7. The lining ring 2 is installed outside the valve ring 3, and the lining ring 2 and the valve ring 3 are circular. The leaflet joints 7 are arranged on two end surfaces of the axis of the valve annulus 3 , and the angle limiting valves 6 are arranged on both sides of the two leaflet joints 7 in pairs. The angle limiting valve 6 limits the opening angle of the bilobes 1 to 81°. The double leaflet 1 is respectively connected with two leaflet joints 7 and arranged on the surface of the valve ring 3. When the double leaflet 1 is opened, the blood flow can be in the form of a central axis. Double leaflet 1 is set as large leaflet 4 and small leaflet 5 with unequal areas. The ratio of the area of ​​large leaflet 4 to small leaflet 5 is 6:4. Staggered activi...

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Abstract

The invention discloses an aortic valve mechanical valve with two differently-sized valve leaflets. The aortic valve mechanical valve comprises double-leaflet valves, a bushing ring, a valve ring, angle limiting valves and valve leaflet joints, wherein the bushing ring is arranged outside the valve ring; the aortic valve mechanical valve is round; the valve leaflet joints are arranged on two end point planes of an axis of the valve ring; the angle limiting valves are arranged on two sides of each valve leaflet joint in pairs; and the double-leaflet valves are arranged on the plane of the valve ring through the two valve leaflet joints and are different in area size. The double-leaflet valves are arranged on the valve ring, so that blood flows toward a central axis conveniently, and energy consumption can be reduced; and the double-leaflet valves are different in size, and valve leaflets different in area move in a staggered mode under the action of the same pressure, so that an oversize shear force generated during movement of the double-leaflet valves can be reduced, blood cells are protected, the sound generated by the double-leaflet valves can be lowered at the same time, noise is reduced, and the safety and physiological reliability of the aortic valve mechanical valve are improved.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a device for heart valve surgery used to replace a human heart valve with a diseased heart, and more specifically provides an artificial mechanical valve used to replace the function of a human heart aortic valve . Background technique [0002] The aortic valve of the human heart is located on the fibrous ring connecting the left ventricle and the ascending aorta. Open and close by contraction and relaxation. During systole, the aortic valve opens to the ascending aortic cavity, and during diastole, the aortic valve closes to the left ventricular cavity. When the heart is in the fast-systolic ejection phase, when the pressure in the left ventricle rises rapidly greater than the pressure in the aortic cavity, the aortic valve opens to the ascending aorta, and a large amount of blood flows into the aorta and enters the systemic circulation; when the heart is in the sl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24
CPCA61F2/2403
Inventor 何巍何铭权曾建业
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGXI MEDICAL UNIV