Aorta bracket with valve of recoverable and adjustable position

A technology for adjusting the position and aorta, which is applied in the field of medical devices, can solve the problems of inability to adjust the position and recovery, etc., and achieve the effect of easy compression, not easy to deform, and good flexibility

Inactive Publication Date: 2008-08-20
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a retrievable and position-adjustable aortic stent with a valve to solve the defects in the prior art that the position cannot be adjusted and recovered after implantation

Method used

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  • Aorta bracket with valve of recoverable and adjustable position
  • Aorta bracket with valve of recoverable and adjustable position

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] As shown in Figures 1, 2, and 3, a retrievable and position-adjustable aortic stent with a valve is composed of a double-horn-shaped stent 1, a valve 2 placed inside it, and a control device. The double-horn Shaped stent 1 is laser-engraved from a super-elastic nickel-titanium alloy tube, and is divided into three parts: a large bell mouth 11 at the distal end, a middle waist 12, and a small bell mouth 13 at the proximal end, forming a diamond-shaped network structure. Composed of 12 large rhombus structures, the diameter of the large bell mouth 11 is 30mm, the diameter of the waist 12 is 24mm, the length of the waist is 14mm, and the diameter of the small bell mouth 13 is 26mm. Three small nuts 3 are uniformly kneaded at the large bell mouth 11 of the far-center end of the support, and the screw rod 4 is 1.5m long; the valve 2 is composed of a wavy valve ring 21 and a leaflet 22, and the wavy valve ring 21 (Fig. 3 As shown) the superelastic shape memory metal wire is f...

Embodiment 2

[0031]The double trumpet-shaped bracket 1 is laser-carved with a nickel-titanium alloy tube. The diameter of the nickel-titanium alloy tube is 0.20 mm. The bracket frame is composed of a large rhombus structure. Each circle is composed of 12 large rhombus structures. The diameter of the large horn mouth 11 is 35 mm. , the diameter of the waist 12 is 28mm, the length of the waist is 14mm, and the diameter of the small bell mouth 13 is 30mm. Three small nuts 3 are uniformly kneaded at the large bell mouth 11 at the far-center end of the support, and the length of the screw rod 4 is 1.5m.

[0032] The wavy valve stent 21 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 the valve ring 21 mold. The angle between two adjacent folded arcs of the wavy valve ring 21 is 70°. The valve leaflet 22 is made of fresh sheep pericardium, the surface impurit...

Embodiment 3

[0034] The double trumpet-shaped bracket 1 is laser-carved with a nickel-titanium alloy tube. The diameter of the nickel-titanium alloy tube is 0.20mm. The bracket frame is composed of a large diamond-shaped structure. Each circle is composed of 12 large diamond-shaped structures. The diameter of the large bell mouth 11 is 32mm. , the diameter of the waist 12 is 26mm, the length of the waist is 14mm, and the diameter of the small bell mouth 13 is 28mm. Three small nuts 3 are uniformly kneaded at the large bell mouth 11 at the distal end of the bracket, and the screw rod 4 is 1.5m long; the angle between two adjacent folded arcs of the wavy valve ring 21 is 50°.

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Abstract

The invention relates to a recoverable position-adjusting aortic stent with valve, comprising a trumpet-shaped stent (1), an inner valve (2), and a control device; wherein, the trumpet-shaped stent (1) comprising a far-end big horn mouth (11), a middle waist (12) and a near-end small horn mouth (13), all carved with a hyperelastic nitimol tube into diamond mesh structure; the valve (2) is sewed between the near small horn mouth (13) and the middle waist (12). The diameter of the middle waist (12) is much smaller than the diameters of the far-end big horn mouth (11) and the near-end small horn mouth (13). The aortic stent has the advantages of convenient position adjusting, stent recovery, strong holding power, good hyperelasticity and compliance, easy compression, and is facilitated for inserting the pipe and unease to shift since the match between the stent and the root structure of the aorta, and avoids leaking around the valve.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an aortic stent device with a valve. Background technique [0002] With the extension of human life span, the incidence of degenerative aortic valve disease in the elderly is increasing, and it has become one of the main causes of heart failure, syncope and sudden death in the elderly. Although humans have known the disease for more than a century, its etiology is still not very clear, so it is impossible to treat the cause, and there is no effective way to curb the development of the disease. The ideal treatment of aortic valve disease should be able to improve the symptoms of patients and prolong their life. Drug therapy, although helpful in improving symptoms, cannot alter the course of the disease. Therefore, surgical valve replacement remains a major treatment option for patients eligible for valve replacement. Because elderly patients with degenerative aortic val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61F2/24A61L31/02A61L31/14A61L27/06A61L27/38A61L27/50
Inventor 秦永文宗刚军白元姜海滨赵仙先吴弘龚善石
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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