Balloon guide catheter

Abstract

The invention discloses a balloon guiding catheter which comprises a catheter base assembly, a first catheter assembly, a liquid passing assembly and a balloon assembly. The near end of the first catheter assembly extends into the catheter seat assembly and is communicated with the catheter seat assembly. The first guide pipe assembly comprises an outer pipe fitting and an inner pipe fitting, the inner pipe fitting is arranged in the outer pipe fitting, a first guide cavity is formed in the inner pipe fitting, the outer pipe fitting and the inner pipe fitting are coaxial with the first guide cavity, and a containing cavity piece is arranged between the outer pipe fitting and the inner pipe fitting; the near end of the liquid passing assembly is communicated with the catheter seat assembly; the balloon assembly is annularly arranged on the outer wall of the outer pipe fitting, located at the far end of the outer pipe fitting and communicated with the far end of the liquid passing assembly. The liquid passing assembly is arranged in the first catheter assembly, the liquid passing assembly can be used for filling the balloon assembly with liquid, meanwhile, the first catheter assembly can be supported, the supporting performance of the catheter assembly can be enhanced without increasing the specification of the outer diameter of the first catheter assembly, and the puncture risk is reduced.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular, to a balloon guiding catheter. Background technique [0002] In recent years, with the advancement of imaging equipment and the introduction and improvement of new interventional devices, endovascular interventional diagnosis and treatment have developed rapidly. As a minimally invasive treatment method, vascular interventional doctors have been able to deal with more and more complex lesions. There are more and more cases of clinical application, and more and more diseases are involved. [0003] At present, balloon guide catheters are manufactured in the form of a combination of an inner tube and an outer tube, and the gap between the inner and outer tubes is used as a liquid passage. However, the existence of the above-mentioned gap easily leads to insufficient wall thickness of the catheter and insufficient support of the tube body. Problem, in order to solve th...

AI Technical Summary

Problems solved by technology

[0003] At present, balloon guide catheters are manufactured in the form of a combination of inner tube and outer tube, and the gap between the inner and outer tubes is used as a fluid passage. However, the existence of the above-mentioned gap may easily lead to insufficient wall thickness of the catheter and insufficient support of the tube body. Problem, in order to solve the above problems, some manufacturers adopt the method of increasing the outer diameter of the No. 1 specification to increase the wall thickness of the catheter when the inner diameter is the same. After thickening, the specification of the outer diameter reaches 9F. During application, a 9F specification vascular puncture sheath must be used, but the larger the specification of the vascular sheath used for puncture, the larger the puncture port will be, increasing the pain of the patient and increasing the size of the puncture sheath. risk of puncture

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