Catheter structure and intra-aortic balloon catheter

The catheter design with a shared wall structure for the inner and outer tubes solves the problem of low balloon aspiration or inflation rate in intra-aortic balloon counterpulsation, improves balloon inflation and deflation efficiency, reduces gas resistance and complications, and enhances catheter stability and bending resistance.

CN224441920UActive Publication Date: 2026-07-03NANJING NOVLEAD BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING NOVLEAD BIOTECHNOLOGY CO LTD
Filing Date
2025-02-26
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Current intra-aortic balloon counterpulsation technology suffers from poor treatment outcomes and affects cardiac ejection when the heart rate is high due to slow balloon deflating or inflating rates.

Method used

The catheter is designed with a shared wall structure for the inner and outer tubes. The axes of the inner and outer tubes are parallel, and the outer wall of the inner tube is in contact with the inner wall of the outer tube to form a shared wall structure. The inner tube has a three-layer structure, including an inner layer, a braided layer, and an outer layer. The braided layer is a metal wire braided layer. The outer tube is the gas passage, and the inner tube is used for injecting heparinized saline and pressure measurement.

Benefits of technology

It improves the inflation and deflation effect of the balloon, reduces gas resistance, reduces the impact of the balloon on lower limb blood flow, reduces complications, enhances the catheter's resistance to bending, and ensures the stability and safety of treatment.

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Abstract

This application provides a catheter structure and an intra-aortic balloon catheter, relating to the field of intra-aortic balloon catheters. The catheter structure includes an inner tube and an outer tube; the inner diameter of the outer tube is larger than the outer diameter of the inner tube; the outer tube is fitted around the outer periphery of the inner tube, and the axis of the outer tube is parallel to the axis of the inner tube; the outer wall of the inner tube is fitted to the inner wall of the outer tube; the inner tube includes an inner layer, a braided layer, and an outer layer; the braided layer is sandwiched between the inner and outer layers. The catheter structure provided by this application solves the technical problem in the prior art where the balloon aspiration rate is low or the inflation rate is slow, leading to poor treatment efficacy when using intra-aortic balloon counterpulsation technology.
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