Coaxial driving type intravascular stent conveying system
A vascular stent and coaxial drive technology, applied in stents and other directions, can solve problems such as inability to operate accurately and highly rely on the operating experience of doctors, and achieve the effect of reducing the difficulty of surgery, good recurrence effect, and reducing the difficulty and risk of surgery.
Pending Publication Date: 2020-12-18
上海善迪医疗科技有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a coaxially driven vascular stent delivery system, which solves the problem that the vascular stent release products on the market are highly dependent on the doctor's operating experience and cannot be operated precisely
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[0042] In order to easily understand the technical means, creative features, goals and effects of the present invention, the present invention will be further described below in conjunction with specific illustrations.
[0043] Since the conveying system is placed vertically in the figure, the "lower end" and "bottom" referred to in the text are the "near end" in medicine, and the "upper end" is the "far end" in medicine. In actual products, the inner tube 21, The ejector tube 23 and the outer sheath tube 34 are relatively long, and for convenience of displaying in the same figure, part of the tube body is omitted.
[0044] Such as figure 1 As shown, a coaxially driven vascular stent delivery system includes an operating device 1 , an ejecting device 2 , and a retracting device 3 .
[0045] Such as figure 2 As shown, the operating device 1 is composed of a rotary handle 11 and a fixed tube 12. The lower end of the rotary handle 11 is movable and fixed to the upper end of th...
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The invention discloses a coaxial driving type intravascular stent conveying system, and belongs to the technical field of intravascular stent conveying. The coaxial driving type intravascular stent conveying system comprises an operation device, an ejection device and a return device, wherein the operation device is composed of a rotary handle and a fixed tube; the ejection device is composed ofan inner tube, a fixing column, an ejection tube and a conical head; and the return device is composed of a threaded tube, an infusion tube, a three-way connector and an outer sheath. The inner tube and the ejection tube move downwards relative to the fixed tube by rotating the rotary handle relative to the fixed tube, the intravascular stent is ejected downwards, the outer sheath retracts upwardsrelative to the fixed tube, the ejection tube and the outer sheath are synchronously matched, and the intravascular stent can be accurately released to a preset position. Compared with an existing release device, high dependence on doctor operation experience is not needed, once the lower end of the outer sheath reaches a specific position, the release position of the intravascular stent is determined accordingly, a good reproduction effect is achieved, the operation difficulty is reduced, and the operation time is shortened.
Description
technical field [0001] The invention relates to a coaxially driven vascular stent delivery system, which belongs to the technical field of vascular stent delivery. Background technique [0002] Vascular stents are widely used clinically as the main treatment method for vascular stenosis. In general, according to different processing methods, vascular stents can be divided into laser-cut stents and braided stents. A stent delivery system refers to a delivery system that can deliver a stent to a stenotic lesion and release it accurately. [0003] At present, braided stents are widely used because of their good flexibility, which can bend severe blood vessels without causing secondary damage to blood vessels. During the operation of the braided stent, due to its product characteristics, the stent must be elongated and put into a thinner outer sheath for introduction into blood vessels. During the operation, it is delivered to the lesion through the outer sheath, and then rel...
Claims
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Login to View More IPC IPC(8): A61F2/966A61F2/97
CPCA61F2/966A61F2/97
Inventor 方萍
Owner 上海善迪医疗科技有限公司