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Valve annulus retractor

A technology of retractor and valve ring, which is applied in medical science, surgical fixation nails, connecting components, etc., can solve the problems of inconvenient operation and insufficient verification of safety and effectiveness, and achieve easy operation, reduction of reflux, and safety. sex high effect

Pending Publication Date: 2019-04-12
上海诺强医疗科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some devices in this area in the world, their safety and effectiveness have not been fully verified, and there are generally disadvantages of inconvenient operation.

Method used

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  • Valve annulus retractor
  • Valve annulus retractor
  • Valve annulus retractor

Examples

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Embodiment Construction

[0023] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0024] An annulus retractor, which is used for annulus contraction through catheter operation, includes a fixing nail 1, a nailer 2, a connecting wire 3, a knotter and a wire cutter.

[0025] Such as figure 1 and figure 2 As shown, the fixation nail 1 includes a helical needle 1-1 and a fixation head 1-2. The spiral needle 1-1 is a spiral needle with a sharp head end, made of rigid materials such as metal materials, the out...

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Abstract

The invention relates to a valve annulus retractor, comprising a fixing nail, a nailing device, a connecting line, a knotter and a line cutter. The fixing nail comprises a screw needle and a fixing head, the screw needle is fixed on a proximal end of the fixing head, and the fixing head comprises a spiral segment and a contact spiral end at a distal end; the nailing device comprises an outer tubeand a rotary push member, the inner wall of the outer tube is provided with an internal thread matched with the spiral segment, and the proximal end of the rotary push member is provided with a structure matched with the contact spiral segment. During nailing, the fixing nail is assembled in the outer tube and cooperates with the rotary push member to screw to the proximal end of the outer tube, the connecting line is connected with the fixing head, and the connecting line is knotted by the knotter and cut by the line cutter. The valve annulus retractor of the invention can realize effective contraction treatment for a mitral valve annulus or a tricuspid annulus to reduce the reflux of a valve, the operation is simple and the safety is high.

Description

technical field [0001] The invention belongs to the technical field of annulus expansion treatment apparatus, in particular to an annulus retractor. Background technique [0002] Annulus dilatation is the most common cause of atrioventricular valves (including mitral valve and tricuspid valve), which can cause the valve leaflets to separate from each other, resulting in gaps and valvular regurgitation. Therefore, annulus retraction (including suturing the annulus, implanting an artificial annulus, etc.) for dilation of the annulus is an important and basic procedure for mitral or tricuspid valve repair. The current repair techniques for mitral and tricuspid valves are based on annulus constriction combined with other repair techniques (such as valve leaflet repair, chordal implantation). Its principle is aimed at the insufficiency caused by the dilation of the valve ring, by reducing the mitral or tricuspid valve orifice area so that the valve leaflets can fit each other, t...

Claims

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Application Information

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IPC IPC(8): A61B17/00A61B17/064
CPCA61B17/00234A61B17/064A61B2017/00243A61B2017/0649
Inventor 戴宇峰潘炳跃
Owner 上海诺强医疗科技有限公司
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