Winding type net disc support and conveying device thereof

A delivery device and winding technology, applied in medical science, surgery, etc., can solve problems such as the need to improve the collection effect of thrombus, large blood vessel damage, inconvenient release and recovery, etc.

Pending Publication Date: 2021-07-30
上海融脉医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: to provide a coiled net disk support and its delivery device, which solves the problem that the thrombus collection effect of the current thrombectomy support needs to be improved, the damage to blood vessels is relatively large, and it is not easy to release and recover. The problem

Method used

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  • Winding type net disc support and conveying device thereof
  • Winding type net disc support and conveying device thereof
  • Winding type net disc support and conveying device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as figure 1 , figure 2 Shown, a kind of winding-type mesh disk support and its conveying device, it comprises conveying device 1 and thrombus removal support 2, and conveying device 1 comprises the conveying outer pipe 101 that coaxially arranges from outside to inside, stent fixing pipe 102, The distal end of the bracket fixing tube 102 is fixed with at least one thrombus removal bracket 2, and the distal end of the bracket fixing tube 102 is provided with a head end guide cap 103;

[0062] Such as Figure 3-Figure 6 As shown, the thrombectomy support 2 is made of a cylindrical braided grid with a shape memory effect, and the distal opening of the cylindrical braided grid is rolled outwards and heat-treated to shape it;

[0063] Such as Figure 7-Figure 13 As shown, the thrombectomy support 2 includes three types: a curved external coil retrieval support 21, a broken line external coil retrieval support 22 and a combined external coil retrieval support 23;

...

Embodiment 2

[0070] Such as Figure 9 As shown, the folded-line outer coiling bolt holder 22 is a mesh surface formed by 4 continuous line segments rotating one circle, wherein, sorted from the proximal end to the distal end, the first line segment at the proximal end is a cylindrical mesh surface 26 formed by rotating one circle Fixed on the bracket fixing tube 102, the second line segment rotates once to form a tapered mesh surface 27, the third and fourth line segments form a convex V-shaped fold line, and the V-shaped fold line rotates once to form a V-shaped support mesh surface 28. Other structures are the same as in Embodiment 1. The contact area at the top of the V-shaped support mesh surface 28 formed by the broken-line externally coiled thrombus support 22 is small, and the damage to the blood vessel 3 is small.

[0071] Such as Figure 10 shown in Figure 9 On the basis, another network disc-shaped broken line type outer coiling bolt support 22 is added. The network disc-shap...

Embodiment 3

[0073] Such as Figure 11 As shown, the combined external coiling bolt holder 23 is a mesh surface formed by successively rotating the first line segment at the proximal end, the second line segment, and the external coiling curve 24 at the distal end, and the first line segment is formed by rotating one cycle. The cylindrical mesh surface 26 is fixed on the bracket fixing pipe 102, the second line segment rotates one turn to form a tapered mesh surface 27, and the outer curling line 24 rotates one turn to form an arched support mesh surface 29. Other structures are the same as in Embodiment 1. The arched supporting mesh surface 29 formed by the combined outer coiling bolt bracket 23 has a stronger radial supporting force and is more stable.

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Abstract

The invention discloses a winding type net disc support and a conveying device thereof, and belongs to the technical field of vascular intervention medical treatment. The device comprises a conveying device and thrombus taking supports, the conveying device comprises an outer conveying pipe and a support fixing pipe which are coaxially arranged from outside to inside, at least one thrombus taking support is fixed to the far end of the support fixing pipe, and a head end guide cap is arranged at the far end of the support fixing pipe; the thrombus taking support is made of a cylindrical woven net rack with a shape memory effect, and a far-end opening of the cylindrical woven net rack turns up outwards and is subjected to heat treatment shaping. The thrombus taking support with the far-end opening turned outwards is arranged on the support fixing tube, the outwards-turned thrombus taking support can make close contact with the inner wall of a blood vessel, thrombus is collected in the curled space of the thrombus taking support after being scraped, and the thrombus taking effect and the thrombus extraction efficiency can be improved; when thrombus is scraped, the curled thrombus taking support is not prone to scratching the blood vessel wall; and when the thrombus taking support is recovered after being released, the curled thrombus taking support can be smoothly collected into the conveying outer pipe.

Description

technical field [0001] The invention relates to a coiled network disk support and a delivery device thereof, belonging to the technical field of vascular interventional medicine. Background technique [0002] Abnormal vascular channels cause blood to flow abnormally in blood vessels. This hemodynamic abnormality can cause a series of adverse consequences such as tissue hypoxia, abnormal intravascular pressure, increased cardiac load, and even heart failure. Therefore, catheter intervention techniques are generally required. Restoring or reestablishing blood flow in blood vessels. Narrowed or blocked blood vessels cause turbulent or slowed blood flow, which can lead to the formation of blockages such as thrombi that restrict blood supply to areas downstream of the vasculature. When the thrombus is located in the neurovascular system, it may cause stroke; when the thrombus is located in the pulmonary artery system, it may cause pulmonary embolism, resulting in death of the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221
CPCA61B17/221A61B2017/22079A61B2017/2215
Inventor 胡文忠韩建超李世文周斌丁双喜
Owner 上海融脉医疗科技有限公司
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