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Visualized artificial chordae tendineae

A technology of artificial chord and chord, which is applied in the field of medical devices, can solve the problems of increased difficulty of surgery, increased operation time, and short length of artificial chord, and achieve the goals of improving the success rate of surgery, shortening the operation time, and reducing the difficulty of surgery Effect

Active Publication Date: 2022-07-26
HANGZHOU VALGEN MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the operation, when the suture thread used as the artificial chord enters the human body, the operator cannot intuitively see the position and shape of the artificial chord, and cannot judge whether the implantation position is reasonable, and artificial chords may occur during the operation. Kinking due to too long chordae, or overstretching of leaflets due to too short artificial chordae
In addition, since it is usually necessary to implant multiple artificial chords on the valve leaflets, the artificial chords implanted first will affect the implantation process of the artificial chords implanted later, which increases the difficulty of the operation and increases the operation time.

Method used

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  • Visualized artificial chordae tendineae
  • Visualized artificial chordae tendineae
  • Visualized artificial chordae tendineae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like image 3 As shown, the imageable artificial chordae tendineae 100 of the first embodiment includes a flexible chordae tendineae main body 110 . The chordae main body 110 includes a flexible inner core 111 having a certain axial length. The inner core 111 is provided with a developing member 113 for displaying the position of the artificial chordae. The developing member 113 is at least partially made of an X-ray opaque material.

[0043] The chordae tendineae body 110 is intended to be implanted in the heart to replace diseased chordae tendineae in the heart. According to the different implantation methods, the morphological structure of the artificial chordae tendineae after implantation into the human body has two ways: image 3 As shown, one is to implant the artificial chordae tendinea into the human body in the form of a U-shaped suture, and the artificial chordae tendineae after implantation is U-shaped, that is, the middle of the suture before implantation ...

Embodiment 2

[0063] The structure of the artificial chord of the second embodiment is basically the same as the structure of the artificial chord of the first embodiment, including a flexible chord main body 110, and the chord main body 110 includes an inner core 111, and preferably also includes an inner core 111 sleeved. The outer outer body 112 and the inner core 111 are provided with a developing member 113 for displaying the position of the artificial chordae tendineae during surgery. The difference is that the artificial chord of the second embodiment further includes a fixing member 120 provided on at least one end of the chord main body 110 .

[0064] For details, see Figure 12 and Figure 13 , the chordae body 110 has opposite first and second ends. The first end and / or the second end is connected with the fixing member 120 . The side of the fixing member 120 facing away from the main body 110 of the chordae tendineae is provided with a puncturing connecting member for forming...

Embodiment 3

[0072] The structure of the artificial chord of the third embodiment is basically the same as the structure of the artificial chord of the second embodiment, the difference is that the developable artificial chord of the third embodiment also includes a non-slip member sleeved on the chord main body 110 130.

[0073] like Figures 15 to 17 As shown, in order to convert the point contact between the artificial chordae tendineae 100 and the valve leaflets into surface contact, thereby reducing the risk of tearing the valve leaflets by the artificial chordae tendineae 100, the chordae tendineae main body 110 is sleeved with a non-slip member 130, and the anti-slip member 130 can slide axially along the chordae body 110 . Since the anti-slip member 130 is pre-arranged on the chordae main body 110, after the puncture needle 410 punctures the valve leaflet and is fixedly connected to the chordae main body 110, the anti-slip member 130 can be brought to the puncture point and fixed ...

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PUM

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Abstract

The invention discloses a developable artificial chordae tendineae. The artificial chordae tendineae includes a flexible chordae main body, the chordae main body includes a flexible inner core with a certain axial length, and at least one chord for A visualization piece showing the position of the artificial chordae tendineae, made of an X-ray opaque material. The artificial chordae of the present invention can more quickly and accurately determine whether the implantation position is reasonable during the operation, and prevent the entanglement of the artificial chordae tendineae being too long during the operation or the excessive pulling of the valve leaflets caused by the artificial chordine tendineae being too short. .

Description

technical field [0001] The invention belongs to the field of medical devices, and relates to a device for repairing heart valve defects, in particular to a developable artificial chordae tendineae. Background technique [0002] The mitral valve is a one-way "valve" between the left atrium (abbreviated: LA) and the left ventricle (abbreviated: LV), which allows blood to flow from the left atrium to the left ventricle. See figure 1 , a normal healthy mitral valve has multiple chordae tendineae. The leaflets of the mitral valve are divided into anterior leaflets and posterior leaflets. When the left ventricle is in a diastolic state, the two are in an open state, and blood flows from the left atrium to the left ventricle; when the left ventricle is in a contracted state, the chordae tendineae are stretched to ensure The valve leaflets will not be flushed to the atrium side by the blood flow, and the anterior and posterior leaflets are well closed, thereby ensuring that the bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24
CPCA61F2/2454A61F2230/0013A61F2230/0006A61F2230/0008A61F2230/0021A61F2230/0019A61F2250/0098
Inventor 张伟伟潘湘斌张庭超孟旭
Owner HANGZHOU VALGEN MEDTECH CO LTD
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