Balloon catheter conveying device for intracranial angioplasty

Abstract

The invention relates to a balloon catheter conveying device for intracranial angioplasty. The device comprises a conveying catheter, and the conveying catheter is provided with a conveying catheter inner cavity used for enabling a corresponding guide wire and a stent to pass through; an inflatable balloon is arranged at the far end of the conveying catheter, and a guide pipe with the length of 8-20 mm is arranged at the end, away from the conveying catheter, of the inflatable balloon; the guide pipe is a plastic guide pipe or a pre-plastic guide pipe with a bent section, and the guide pipe isprovided with a guide pipe inner cavity which is communicated with the conveying catheter inner cavity and allows the guide wire and the stent to pass through. The balloon catheter conveying device which is used for intracranial angioplasty and capable of precisely guiding the balloon and the stent to a lesion position is provided.

Description

technical field [0001] The invention relates to a balloon catheter delivery device for intracranial angioplasty in the field of medical equipment. Background technique [0002] Ischemic stroke is one of the main causes of disability and death, 10%-15% of which is caused by intracranial atherosclerotic stenosis, and the Asian population may be as high as 33%-50%. [0003] The WASID trial showed that even with strict oral aspirin antithrombotic prophylaxis, the annual risk of recurrent stroke was still as high as 18%; the SAMPPRIS trial showed that the recurrent stroke rate within one month of intensive medical treatment was 5.8%, and the recurrent stroke rate within 32.8 months 15%; especially for those patients with recurrent symptoms of antithrombotic therapy or hypoperfusion, selective stenting and revascularization are necessary. As early as 1980, some scholars tried percutaneous angioplasty (PTA) to treat basilar artery stenosis. At present, regardless of whether the Ga...

AI Technical Summary

Problems solved by technology

However, the existing balloon catheter still has the following problems: the tube body located at the distal end of the balloon is short, cannot be plastically deformed, cannot play a guiding role, and cannot accurately guide the balloon when encountering branch vessel lesions To the lesion position, the stent cannot be accurately sent to the lesion position, which increases the difficulty of the operation; the tip tube section will increase the delivery resistance of the stent, and will also increase the difficulty of the operation

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