Blood vessel flow limiter for high-flow internal fistula

By designing a flexible vascular flow restrictor, a structure with a width and length much larger than the thickness and setting a scale line, the cuts and inaccurate measurement problems caused by suture flow restriction are solved, and a safe and accurate vascular flow restriction effect is achieved.

CN223158400UActive Publication Date: 2025-07-29成都市第一人民医院
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Patent Information

Application Number
CN202421891760.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-07-29
Estimated Expiration
2034-08-06

AI Technical Summary

Technical Problem

In the prior art, the method of directly wrapping sutures outside the blood vessels can easily lead to slashing the blood vessels, and the diameter after the blood vessels are restricted is not measured, which affects the surgical effect.

Method used

A blood vessel flow restrictor made of flexible material is designed with a length and width much greater than the thickness, and is provided with a scale line that can cover the blood vessels along the circumference and length directions of the blood vessels and is fixed by sutures to provide uniform pressure flow limits while the scale line is used to accurately measure the blood vessel diameter.

Benefits of technology

The cut problem caused by too small contact area between sutures and blood vessels is avoided, and the measurement is more accurate through the scale line, which improves the safety and measurement accuracy of blood vessel flow limit.

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Abstract

The utility model relates to the field of vascular surgical instruments, in particular to a vascular flow restrictor for high-flow internal fistula, which comprises a body made of flexible materials, the length size and the width size of the body are at least two times of the thickness size of the body, and the length size and the width size of the body are at least two times of the thickness size of the body. A plurality of parallel first scale marks are arranged on the body at intervals in the width direction, the body can wrap the blood vessel in the width direction, and the two sides of the body are connected to compress the blood vessel. According to the blood vessel flow limiter, a large contact area can be formed between the body and a blood vessel, uniform acting force can be applied to the blood vessel, the effect of protecting the blood vessel can be achieved, and the problem that the blood vessel is easily cut due to the fact that the contact area between a suture and the blood vessel is too small and the pressure intensity per unit area is too large is solved; in addition, the diameter or radius of the blood vessel can be estimated or measured through the scale marks arranged on the surface of the body, and compared with visual size estimation, measurement through the scale marks is more visual, and the measurement precision is higher.
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