A passive support force adjustable guiding catheter and guiding device thereof

By designing a guide tube structure that can adjust the passive support force, the combination of the inner core tube, sliding sleeve and pulling component solves the problem that the existing guide tube cannot have good flexibility and rigidity at the same time, and achieves flexible conversion of the guide tube and improved stability of the interventional treatment.

CN119733152APending Publication Date: 2025-04-01SHENZHEN PEOPLES HOSPITAL
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Patent Information

Application Number
CN202411981159.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

The passive support force of the existing guide catheter is fixed and cannot be adjusted according to actual needs, which makes it difficult to have good flexibility and rigidity at the same time during interventional treatment, affecting the treatment effect.

Method used

A guide tube structure including an inner core tube, a sliding sleeve and a pulling member is designed. Through the spacing distribution of the sliding sleeve and the external pulling of the pulling member, the passive support force of the inner core tube is converted from flexibility to rigidity.

Benefits of technology

The flexible conversion between the flexibility and rigidity of the guide catheter is achieved, and the passive support force can be adjusted according to different treatment needs, thereby improving the stability and effectiveness of interventional treatment.

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Abstract

The present invention relates to a guide catheter with adjustable passive support force and a guide device thereof, wherein the guide catheter comprises an inner core tube, a sliding sleeve and a pulling component. The sliding sleeve is sleeved on the outer edge of the inner core tube, and a plurality of sliding sleeves are arranged at intervals. The sliding sleeve close to the outer end is fixed to the inner core tube, and the other sliding sleeves are slidably connected to the inner core tube. One end of the pulling component is fixedly connected to the sliding sleeve close to the insertion end, and the other end is arranged along the axial direction of the inner core tube, moves through the other sliding sleeves, and then extends toward the outer end for external pulling operation. Compared with the prior art, the guide catheter of the present invention can adjust the inner core tube from a weaker passive support force state to a stronger passive support force state during use, thereby realizing the conversion between the flexibility and rigidity of the guide catheter.
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