Carotid artery in-situ fenestration balloon sheath

Abstract

The invention provides a carotid artery in-situ fenestration balloon sheath. The carotid artery in-situ fenestration balloon sheath comprises a balloon sheath body, a sheath core and an injection device. The balloon sheath body is of a hollow structure with a through head and tail and comprises a first balloon, a sheath tube front section, a second balloon, a sheath tube rear section and a sheath tail, and the first balloon is an annular balloon and can expand outwards after being filled; the second balloon is of a hollow flexible bendable structure; the sheath tube front section, the sheath tube rear section and the sheath tail are of hollow tubular structures; the first balloon, the sheath tube front section, the second balloon, the sheath tube rear section and the sheath tail are fixedly connected and communicated in sequence; a third balloon is fixed in the sheath tail; the sheath core is of a hollow structure with holes in the head and the tail, and the head of the sheath core is conical. The sheath core is inserted into the balloon sheath body through the third balloon, and the head of the sheath core penetrates out of the first balloon; the injection device is communicated with the first balloon, the second balloon and the third balloon and is responsible for injecting liquid into the first balloon, the second balloon and the third balloon; after the third balloon is filled, the inner wall of the balloon is tightly attached to the sheath core.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a carotid artery in situ fenestrated balloon sheath. Background technique [0002] The sheath can be implanted from the neck through the exposure of the carotid artery incision, and then the hard metal puncture needle can be pushed to the released large blood vessel stent through the sheath and puncture and break through the covering of the large blood vessel stent, and then the covering can be expanded with a balloon The puncture needle eye on the upper body forms a hole, and finally a small stent is implanted in the hole, thereby opening the carotid artery blood flow, so that blood can enter the carotid artery from the aorta normally. [0003] In these surgical operations, the puncture needle can quickly, accurately and stably puncture the covering of the large blood vessel stent and quickly, accurately and controllably expand the hole of the needle eye into a hole of a sufficien...

AI Technical Summary

Problems solved by technology

This process has the following problems: 1. The sheath tube and the head of the metal cylinder are ordinary tubular structures. During the operation, the top is easy to shift or even compress the blood vessel wall, which makes it impossible to accurately and quickly locate the puncture needle to the large vessel stent. 2. Due to the large gap between the sheath tube, the metal cylinder and the puncture needle, the blood in the carotid artery will flow out of the patient's body through the above channels, resulting in a large amount of blood loss in the patient; 3. Sometimes the target blood vessel is too twisted, As a result, the sheath tube and the metal cylinder cannot better adapt to the vascular route; 4. After the puncture needle pierces the covering of the large vessel stent during the operation, the process of the balloon entering and expanding the needle hole is complicated and time-consuming, resulting in carotid artery ischemia The time is too long, and the balloon itself is expensive, and the use of the balloon increases the cost of the patient

[0005] The above situations will lead to a significant increase in the difficulty of surgery, and even surgical accidents.

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