Expandable catheter and expandable catheter sheath
A technology for dilating catheters and bodies, applied in dilators, surgery, etc., can solve problems such as easy bending and blood vessel damage, achieve the effects of reducing damage, enhancing bending and compression resistance, and improving surgical safety
Pending Publication Date: 2021-11-02
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
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Problems solved by technology
[0006] The purpose of the present invention is to provide an expandable catheter and an expandable catheter sheath to solve the problem that the existing expandable catheter sheath easily causes blood vessel damage or is easy to bend
Method used
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[0039] In order to make the purpose, advantages and features of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in very simplified form and not drawn to scale, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In addition, the structures shown in the drawings are often a part of the actual structures. In particular, each drawing needs to display different emphases, and sometimes uses different scales.
[0040] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is usually used in the sense of including "and / or", and the term "proximal "Usually refers to the end close to the operator, and the term "distal end" usually refers to the end close to the patient and close to the lesion. "One end" ...
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The invention provides an expandable catheter and an expandable catheter sheath. The expandable catheter comprises a body, a connecting part and a reinforcing part, the expandable catheter is switched between a contracted state and an expanded state in the circumferential direction; the body is provided with openings in the circumferential direction, the openings are continuously formed in the axial direction, and opening and closing of the openings correspond to state switching of the expandable catheter; the connecting parts are connected to the two sides of the opening; and the reinforcing parts are continuously arranged in the body along at least one part of the circumferential direction of the body, and the reinforcing parts are not overlapped in the circumferential direction of the body. According to the configuration, the body is radially reinforced by the reinforcing part which is not closed in the circumferential direction, so that the bending resistance and the compression resistance of the expandable catheter can be effectively enhanced, the expansion performance of the body is not influenced, compliant bending in all directions is realized, the risk of bending due to overlarge bending degree of a blood vessel is reduced, and the operation safety is improved.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to an expandable catheter and an expandable catheter sheath. Background technique [0002] Interventional therapy is a common treatment method that introduces specific instruments into the diseased part of the human body through the natural pores of the human body or tiny wounds for minimally invasive treatment. There are many types of diseases that can be treated by interventional therapy, almost including major diseases of various systems and organs of the whole body. The advantages of vascular microtrauma therapy are small trauma, quick recovery, and easier acceptance by patients. With the development of interventional therapy technology, its application is more and more extensive, such as transcatheter aortic valve replacement (TAVR). One implementation of transcatheter aortic valve replacement (TAVR) is to send an interventional catheter through the femoral artery, del...
Claims
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IPC IPC(8): A61M29/00
CPCA61M29/00
Inventor 张靖宜岳蕾桂宝珠冀丽军陈国明
Owner SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD