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Transcatheter aortic valve replacement auxiliary device

An auxiliary device, aortic valve technology, applied in catheters, balloon catheters, heart valves, etc., can solve problems such as balloon slip and dislocation, and achieve the effects of facilitating expansion, increasing friction, and improving compression resistance.

Pending Publication Date: 2022-02-25
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention discloses an auxiliary device for transcatheter aortic valve replacement, which is used to solve the problem that the balloon slippage and dislocation are prone to occur in the balloon pre-expansion link in the prior art

Method used

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  • Transcatheter aortic valve replacement auxiliary device
  • Transcatheter aortic valve replacement auxiliary device
  • Transcatheter aortic valve replacement auxiliary device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 and figure 2 As shown, the conducting tube aortic valve replacement assist device provided by the present invention includes:

[0046] The balloon body 10 capable of radially contraction, the balloon body 10 includes a distal end portion 11, a proximal end portion 12, and an intermediate portion 13 located between the distal end portion, wherein the distal end portion 11 converges to the distal end; the intermediate portion 13 The outer periphery has a plurality of fiber tape 14, and the bump array 15; each fibrous belt 14 intersects, the fiber tape 14 is at least partially coincided with the bump array 15; the proximal end portion 12 converges to the proximal end. The intermediate portion of the balloon body 10 of the conductor aortic valve replacement assist device is provided with the fiber tape 14 and the bump array 15, and the friction of the surface of the balloon body 10 can be increased to prevent the balloon body 10 from being in the pre-expansion....

Embodiment 2

[0057] Such as image 3 and Figure 4 As shown, in the present embodiment, the fiber tape 14 is woven by a plurality of fibers, and the fibers pass through all bumps. The fibers are interlaced between each other, increasing the intermediate portion 13 of the balloon body 10 and the contact area of ​​the native aorta valve, increasing the static friction between the two, and better plays a non-slip effect.

Embodiment 3

[0059] Such as Figure 5 and Image 6 As shown in Examples 1 and Example 2, the tertiary conduit replacement assisting device in this embodiment further includes a ring convex strip, provided in the outer circumference of the balloon body 10, preferably, A ring convex strip 30 and the second annular raised strip 31, wherein the height of the projections of the first annular convex strip 30 is higher than the height of the bump array 15 and / or the second annular raised strip. The height of the projections in 31 is higher than the height of the bumps in the bump array 15. The first annular convex strip 30 and the second annular convex strip 31 can enhance the friction force of the surface of the balloon body 10, and cooperate with the native aortic valve physiological structure to prevent the intermediate portion 13 from slipping.

[0060] The first annular convex strip 30 and / or the second annular convex strip 31 may be composed of a plurality of discrete projections.

[0061] Th...

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Abstract

The invention relates to a transcatheter aortic valve replacement auxiliary device which comprises a balloon body capable of contracting in the radial direction, the balloon body comprises a far-end part, a near-end part and a middle part located between the far-end part and the near-end part, and the far-end part is converged at the far end; the periphery of the middle part is provided with a plurality of fiber belts and a salient point array; the fiber bands intersect with each other, and the fiber bands and the salient point array area are at least partially overlapped; the near-end part converges at the near end. The fiber belt and the salient point array are arranged in the middle of the balloon of the transcatheter aortic valve replacement auxiliary device, so that the friction force on the surface of the balloon can be increased, and the balloon is prevented from sliding relative to the aortic valve in the pre-expansion process. Due to the fact that the surface of the balloon is covered with the fiber band, the overall compression resistance of the balloon is improved, the balloon can bear larger pressure in the pre-expansion link, and the diseased position of a valve of a patient can be fully expanded conveniently.

Description

Technical field [0001] The present invention relates to the field of medical devices, and more particularly to a conduit for conduit aortic valve replacement auxiliary device. Background technique [0002] Transcatheter Aortic Valve Replacement, TavR is a minimally invasive valve replacement, which is to transport artificial heart valve to the aortic position by interventional catheter technology to complete artificial valve implants, and restore valve function. . TAVR has now become an alternative treatment for patients with severe severe aortic valve stenosis in surgery and patients with surgical contraindications. At present, most patients in our country need to pre-expansion of the aortic valve when performing TAVR surgery, and performing balloon pre-expansion ensures that the artificial valve is placed in place and promotes its pass, and ensures the best development of the artificial valve. [0003] In actual surgery, due to severe valve calcification, the patient's local ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61M25/10A61M29/04
CPCA61F2/2466A61F2/2433A61F2/2427A61M25/10A61M29/02A61M2025/1088A61M2025/1086
Inventor 陈茂冯沅
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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