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Conveying system

A delivery system and tube body technology, applied in the field of medical devices, can solve the problems of inaccurate positioning, high surgical failure rate, shortened stents, etc., and achieve the effect of accurate positioning

Active Publication Date: 2020-05-08
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing carotid stent delivery devices all adopt the method of anterior release, but this will cause problems such as inaccurate positioning and shortening of the stent, resulting in a high failure rate of the operation

Method used

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Embodiment Construction

[0058] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of descr...

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Abstract

The invention relates to a conveying system. The conveying system comprises a sheath core, a fixed piece and a medical instrument, wherein the sheath core comprises a tube body; the pipe body has a hollow tubular structure, and the tube body comprises a limiting part; the fixed piece comprises a flexible linear part; the medical instrument comprises a connecting part which is configured to enablethe flexible linear part to pass through; the fixed piece passes through the connecting part and is connected with a limiting part by means of movable connection; and the fixed piece is configured torelease the connecting part from the limiting part and pull out of the medical instrument. Compared with an existing conveying system, the conveying system disclosed by the invention has the advantages that because an outer sheath core is reduced, a smaller device for controlling release is adopted, and the device has smaller diameter and can meet a using requirement in a blood vessel with smallerdiameter; and meanwhile, compared with a part of carotid artery conveying devices in the prior art, the conveying system disclosed by the invention has the advantages of rear release and accurate positioning.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical device, a delivery device, and a post-release structure. Background technique [0002] Diseases such as aneurysm and arterial dissection are difficult vascular surgical diseases to treat. Traditional thoracotomy will cause great trauma to the patient. With the rapid development of endovascular interventional technology, the use of vascular stent-grafts to isolate the diseased blood vessel and reconstruct the blood flow channel has become a commonly used technical method. [0003] The delivery device of the existing stent-graft mostly adopts the method of post-release, that is, the proximal end of the stent-graft is fixed by a fixing device, and the sheath is withdrawn after the stent is delivered to a suitable position, and the stent-graft is completely released from the sheath After coming out, the proximal end of the covered stent can be released...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61F2/95
CPCA61B17/12022A61B17/12118A61B2017/1205A61F2/95A61F2002/823
Inventor 刘彩萍
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD