Vascular stent conveying system and conveying method thereof

Abstract

The invention discloses a vascular stent conveying system and a conveying method thereof. The vascular stent conveying system comprises a catheter unit and a conveying device for driving the catheter unit. The catheter unit comprises an outer pipe and an inner pipe, vascular stents are arranged between the outer pipe and the inner pipe, a barb penetrating inner cavities of the vascular stents is fixedly arranged on the inner pipe and comprises a circular sleeve portion and an elastic portion, the elastic portion is abutted to the vascular stents, and the conveying device drives the barb to extend and retract through the inner pipe and pushes out the vascular stents at intervals through the inner pipe. According to the vascular stent conveying system, the catheter unit is provided with a specific barb structure, a direct pushing mode of the conveying system is changed into a reciprocating pushing mode, pushing stroke is short and not limited by the lengths of the vascular stents, the conveying system is operated by one hand conveniently and rapidly, the other hand can be released, only one hand is limited, other operations can be performed in the medical process, a reciprocating pushing mechanism is stable in pushing, conveying stability of the vascular stents is ensured, and smooth surgery is ensured.

Description

technical field [0001] The invention relates to a vascular stent delivery system and a delivery method thereof, belonging to the technical field of minimally invasive medical devices. Background technique [0002] Peripheral vascular surgery is a traditional method for treating peripheral vascular stenosis. Compared with traditional peripheral vascular surgery, stent therapy is a minimally invasive interventional operation with less trauma, fewer complications, and better results. It has become the current treatment for peripheral vascular stenosis. main method. [0003] Implanting a vascular stent into the body requires the use of a delivery system. In the prior art, a hollow inner tube and an outer tube are generally used. The hollow part of the inner tube is convenient for the guide wire to pass through the tube during the operation. Between the outer tubes; during surgery, the guide wire guides the catheter assembly of the delivery system to the surgical site, and the c...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitation of the length of the vascular stent, the delivery stroke of the delivery system is longer, the structure of the delivery system is limited, and it is not convenient for the medical staff to operate the operation, requiring two-handed operation, which is prone to tremor and deviation during the delivery process of the longer delivery stroke. In severe cases, the vascular stent may even shift, which will affect the normal progress of the operation.

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