Embolic protector

By using multi-layer coating and water-absorbing and enlarged materials on the support ring of the embolizer protector, combined with the design of the nickel-titanium alloy recovery part, the problem of difficulty in escape and recycling of embolics in non-circular blood vessels is solved, and better patching is achieved Wall effect and ease of operation.

CN114271989BActive Publication Date: 2025-01-07THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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Patent Information

Application Number
CN202111532754.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-14
Publication Date
2025-01-07
Estimated Expiration
2041-12-14

AI Technical Summary

Technical Problem

The existing embolization protectors are difficult to adhere well in non-circular blood vessels, which leads to the possibility of embolism escaping through the blood vessel wall gap and difficult to recover, increasing the difficulty and time of surgical operations.

Method used

Design an embolization protector, using a support ring formed by connecting multiple cell-like units, the support ring is covered with multiple layers of coating, the interlayer is filled with water-absorbing and expanding material, the recovery part has an oblique opening, and is integrally formed by nickel-titanium alloy, combined with Push the compressive dilated configuration of the guidewire and catheter to ensure that the filter fits well with the blood vessel wall and facilitates recycling.

Benefits of technology

The supporting ring and blood vessel wall are improved, the possibility of embolic escape is reduced, and the release and recovery process of the embolizer protector is simplified, reducing the complexity of surgical operations.

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    Figure CN114271989B_ABST
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Abstract

The present invention relates to an embolic protector, which has a push guide wire, a catheter, and a filter. The filter includes a filter screen, and the push guide wire is connected to the filter. By controlling the push guide wire and the catheter, the filter can be retracted into the catheter to form a compressed configuration, or the filter can be released from the catheter to form an expanded configuration. The feature of the embolic protector is that the filter proximal end has a support ring, the support ring is formed by connecting a plurality of cellular units to form a ring, the proximal end of the support ring is connected to a recovery part, the recovery part has an oblique opening, and the recovery part is connected to the push guide wire. A single layer or multiple layers of coating can be fixed on the support ring, and a water-absorbing swelling material can be filled in the interlayer of the multiple layers of coating. The design of the support ring and the coating can effectively enhance the wall-adhering effect of the embolic protector and prevent the omission of emboli. The oblique opening design of the recovery part facilitates the smooth recovery of the embolic protector.
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Citation Information

Patent Citations

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