Locking device for human body medical appliance conveying system

Abstract

The invention discloses a locking device which is used for a medical device transportation system in the human body, characterized in that the invention includes a locking head, a locking cap and a connection part which connects the locking head and the locking cap, wherein, one end of the locking head is sheathed in the connection part, and the other end thereof is sheathed in the locking cap; the connection part is connected with the locking cap through threads; the contact surface of the locking head and the locking cap is all conical surface; the locking head has a hollow structure for allowing a transportation conduit of the medical device transportation system in the human body, and a shrinkage structure which is in particular a shrinkable multi-petal structure, and each petal of the multi-petal structure is uniformly distributed in the circumference; the wall thickness of a proximal end of the multi-petal structure is less than that of a distal end; the connection part and the locking cap are provided with buckles preventing from separating. The invention has simple design in the structure and easy operation, which can avoid the displacement of the transportation conduit of the transportation system during using process, thus the medical device can be effectively released and positioned during installation process.

Description

technical field [0001] The present invention relates to the field of interventional medical devices, in particular to a locking device for locking the delivery catheter of the medical device delivery system in the human body, for example, the ejector tube or The inner tube can control the positioning of the ejector tube during the release of the stent-graft by the stent-graft delivery system, so as to avoid displacement of the ejector tube during stent transportation. Background technique [0002] Aneurysm is a very dangerous vascular disease clinically. Once an aneurysm is found, it should be treated accordingly as soon as possible. At present, the minimally invasive interventional therapy technology using the principle of intracavitary isolation has been widely used. It uses a set of delivery system with a small diameter to deliver the compressed stent-graft with support to the position of vascular lesions. After accurate positioning, it is released and covers the disease...

AI Technical Summary

Problems solved by technology

In the past, the ejector tube of the conveyor generally did not have a fixing device, and the ejector tube would be displaced under a certain action, such as during transportation, so that the bracket would also be separated from the outer tube, which would affect the operation and the product

[0005] In order to avoid the displacement of the ejector pipe in the existing support delivery system, a locking device for the ejector pipe is designed, but in general, these products have a complex structure, cumbersome operation, and unsatisfactory control effects

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