Implant conveying device and inner tube assembly and catheter thereof

A technology of implants and inner tubes, which is applied in the field of catheters, implant delivery devices and inner tube components, can solve problems such as ignoring the role of the fixed head, invagination, and implant distortion, so as to ensure valve leaflet fatigue performance, The effect of reducing damage and protecting valve leaflets
CN113017951APending Publication Date: 2021-06-25SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
Publication Date
2021-06-25

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Abstract

The invention discloses an implant conveying device and an inner tube assembly and a catheter thereof, the inner tube assembly comprises an implant protection part, an inner tube and a fixing head connected with the inner tube, and the implant protection part is connected with the inner tube or / and the fixing head. The implant protection part is used for being in contact with an implant so as to support the implant; and a protection body is in a circular ring sheet shape or an arc sheet shape. According to the implant conveying device provided by the invention, the implant protection part is arranged, so that a non-anchoring rod with relatively weak circumferential supporting force of a valve stent can be supported, and inclination and damage of the valve stent in a loading process and distortion and inward sinking of the valve stent in a releasing process are avoided.
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Description

technical field

[0001] The invention relates to an implant delivery system, in particular to an implant delivery device and its inner tube assembly and catheter. Background technique

[0002] The implant, such as a self-expanding stent, needs to have a specific structure during the loading and releasing process, and be fixed with the corresponding structure of the conveyor by means of shape fit or pull wire, which can be fixed at one end or at both ends. In this way, the stable pressing and releasing of the implant by the conveyor is realized. This specific structure on the implant is called an ear, and the corresponding structure on the delivery system is called a fixation head. Hanging ears can appear at any node on the bracket. If it is a single-layer bracket, the hanging ears are usually set on one end of the bracket; if it is a double-layer bracket, the hanging ears are usually set on one end of the inner or outer bracket. However, after the double-layer bracket is cr...

Claims

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