Micro catheter

A technology of microcatheter and catheter holder, which is applied in the field of microcatheter, can solve the problems of difficult microcatheter passage and difficult operation, and achieve the effect of reducing the difficulty and difficulty of operation

Inactive Publication Date: 2015-12-02
仇汉诚
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference between the outer diameter of the cylindrical tubular distal end of the microcatheter and the size of the stenotic lesion is small, and it is difficult for the microcatheter to pass through the stenotic lesion under the guidance of the distal end of the microcatheter, making the operation more difficult

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Embodiment Construction

[0030] The embodiment of the present invention provides a microcatheter, which can reduce the difficulty of the microcatheter passing through the stenotic lesion while ensuring the smooth release of the stent from the microcatheter, so as to reduce the difficulty of the operation.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] Please refer to the attached Figure 1-7 , the micro...

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Abstract

The invention provides a micro catheter which comprises a catheter base and a catheter body connected with the catheter base. The catheter body comprises a main body of the catheter body and a tip catheter section which is arranged at the end, far away from the catheter base, of the main body of the catheter body; the outer diameter of the end, far away from the main body of the catheter body, of the tip catheter section is smaller than that of the main body of the catheter body, the inner diameter of the tip catheter section is larger than the outer diameter of a guide wire, and cracks which can enable the tip catheter section to crack outwards in the radial direction are formed in the inner cavity wall of the tip catheter section. During application, when a support enters the tip catheter section, the support can exert acting force on the inner cavity wall of the tip catheter section, the cracks crack, and the tip catheter section cracks outwards in the radial direction, so that the support is sent out; meanwhile, due to the fact that the outer diameter of the far end of the tip catheter section is smaller than that of the main body of the catheter body, the size difference between the far end of the tip catheter section and a narrow lesion is larger, the micro catheter can easily penetrate through the narrow lesion under the guidance of the far end of the tip catheter section, therefore, by means of the micro catheter, it can be guaranteed that the support can be smoothly released from the micro catheter, and meanwhile the difficulty for the micro catheter to penetrate through the narrow lesion is reduced, so that the operation difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of interventional surgical instruments, more specifically, to a microcatheter. Background technique [0002] At present, the main method of endovascular treatment of vascular stenosis is stenting, which requires a microcatheter to pass through the stenotic lesion to reach the distal end of the lesion, and then deliver the stent through the lumen of the microcatheter. [0003] Due to the particularity of the lesion, the microcatheter used in the existing stent-plasty should not be too thick. In the case of a certain outer diameter, the microcatheter is generally designed as a thin-walled and large-lumen structure, and the lumen of the microcatheter is as small as possible. In order to ensure that the stent can be released smoothly from the distal end of the microcatheter, the lumen of the distal end of the microcatheter needs to be as large as possible, so the distal end of the microcatheter can only be selec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/09
Inventor 仇汉诚匡华
Owner 仇汉诚
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