Bending-adjustable high-torque balloon micro-catheter

Abstract

The invention relates to an adjustable-bending high-torque balloon microcatheter which comprises an adjustable-bending base, a microcatheter body and a far-end balloon, the two ends of the microcatheter body are connected with the adjustable-bending base and the far-end balloon respectively, the microcatheter body comprises an inner cavity tube, an outer cavity tube and a traction wire, the outer cavity tube is arranged outside the inner cavity tube in a sleeving mode, and the traction wire is arranged outside the outer cavity tube in a sleeving mode. An annular gap is formed between the outer cavity tube and the inner cavity tube, the outer cavity tube and the inner cavity tube are connected through a plurality of connecting structures distributed at intervals from the far end to the near end, the traction wire is arranged in the annular gap, and the two ends of the traction wire are connected with the developing ring in the far-end balloon and the adjustable bent base respectively; the bending-adjustable high-torque balloon micro-catheter has good resistance to torque, the far end of the micro-catheter can be prevented from being twisted, potential energy accumulated in the micro-catheter is avoided, the surgical risk is reduced, the micro-catheter can be bent through the traction wire so that the micro-catheter can pass through tortuous blood vessels or lesions, and the operation efficiency is improved. The far end of the micro-catheter body adopts a balloon design, so that blood flow can be temporarily blocked, and the micro-catheter is fixed.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an adjustable high-torque balloon micro-catheter. Background technique [0002] Interventional medicine is to insert a special catheter or instrument into the lesion site for angiography, diagnosis and treatment through percutaneous puncture or through the original orifice of the human body under the guidance of imaging medicine (X-ray, ultrasound, CT). It has become the third major clinical treatment method because of its advantages of small trauma, less complications and wide application range (can be applied to cardiovascular and cerebrovascular, peripheral vascular tumors or non-vascular fields, etc.). [0003] However, for ordinary microcatheters, the performance of the catheter itself is single. When passing through tortuous blood vessels or lesions, the end cannot pass smoothly, which affects the operator's continued treatment. In the process of rotating and pushin...

AI Technical Summary

Problems solved by technology

[0003] However, for ordinary microcatheters, the performance of the catheter itself is single, and when passing through tortuous blood vessels or lesions, the end cannot pass smoothly, affecting the operator to continue treatment, and In the process of turning and pushing, affected by the torque, the rotation of the proximal and distal ends is out of sync, and it is easy to accumulate potential energy inside the catheter, which brings clinical risks to patients

At the same time, the existing microcatheter, because of its small size, can be pushed into the inside of a narrow blood vessel, but its fixation effect is poor, and it is easy for the operator to move the microcatheter during the process of pushing the instrument, which increases the risk of surgery for the operator. Difficulty in operation and increased surgical risk

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