Transfemoral valve delivery system
A delivery system and femoral artery technology, applied in the field of transfemoral valve delivery system, can solve the problems such as not easy to bend over the aortic arch, and achieve the effects of easy bending control, improved toughness and high strength
Active Publication Date: 2022-04-26
KOKA NANTONG LIFESCIENCES CO LTD
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Problems solved by technology
[0004] The present invention aims at the technical problem that the distal outer tube of the delivery sheath in the prior art is not easy to bend over the aortic arch to reach the aortic valve, and aims to provide a transfemoral valve delivery system
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[0085] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0086] It should be noted that "distal end", "proximal end", "distal segment" and "near segment" are used as orientation words in the present invention, and the orientation words are commonly used terms in the field of interventional medical devices, where "distal end" " "Distal section" means the end or section far away from the operator during the operation, and "proximal end" and "near section" indicate the end or section close to t...
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The invention discloses a transfemoral valve delivery system, which comprises an inner core tube assembly, an inner sheath tube assembly and an outer sheath tube assembly. Hollow grooves and second hollow grooves; along the axial direction of the distal outer tube from the proximal end to the distal end, the arrangement density of the first hollow grooves and the second hollow grooves increases step by step. In the present invention, the first hollow groove and the second hollow groove are respectively arranged at opposite positions on the side wall of the outer tube of the far section, and the arrangement density of the hollow groove gradually increases and the width decreases. One side wall is bent to the other side wall, and the proximal outer tube of the outer sheath assembly is a braided structure with high strength, and the distal outer tube is easy to control the bending, and the bending angle is 90°~180°. This makes it very easy to bend the delivery sheath over the aortic arch to the aortic valve.
Description
technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a transfemoral valve delivery system. Background technique [0002] With the prolongation of human life span and entering an aging society, aortic valve disease has become one of the more common valve diseases. In western developed countries, the incidence of calcified aortic stenosis is second only to hypertension and coronary heart disease, and has become the primary cause of valve replacement in the elderly. Surgical aortic replacement has long been the mainstay of treatment for symptomatic aortic stenosis. However, due to the large trauma of traditional surgery, extracorporeal circulation is required, and the risk of surgery is high. A large number of patients give up surgical treatment due to fear of surgery due to advanced age, poor ventricular function, and serious complications. [0003] Transcatheter aortic valve replacement (TAVR) is a new type of ...
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IPC IPC(8): A61F2/24
CPCA61F2/2476A61F2/24A61F2/2427
Inventor吴明明程筒陈大凯
OwnerKOKA NANTONG LIFESCIENCES CO LTD