Thrombus extraction device
A technology for removing a device and a thrombus, applied in the field of medical devices, can solve problems such as small tube diameter, and achieve the effects of improving life, increasing the success rate of thrombus removal, and improving the rate of clinical revascularization
Pending Publication Date: 2022-02-18
SHANGHAI BIOCHAM MEDICAL TECH CO LTD
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- Description
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- Application Information
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Problems solved by technology
The disadvantage of this configuration of thrombectomy stents is that their diameter is usually very small, and when the pull wire is under tension, the braided structure expands at the least stressed locations, which are often the places where there is no thrombus
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[0061] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments may be embodied in many forms, and the invention should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will incorporate the concepts of example embodiments Fully conveyed to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted. The terms "or" and "and / or" in the specification are to be interpreted as inclusive, or to mean any one or any combination. Thus, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . Exceptions to this definition will only arise when combinations of elements, functions, steps or operations are inherently mutually exclusive in some way. The d...
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The invention provides a thrombus extraction device. The thrombus extraction device comprises a self-expanding thrombus extraction stent, a pushing rod with a hollow inner cavity, a traction wire and at least one supporting assembly. The thrombus extraction stent is of a tubular grid structure composed of more than two ribs which are connected with each other. The near end of the thrombus extraction stent is fixedly connected with the far end of the pushing rod; the traction wire penetrates through the pushing rod and the thrombus extraction stent, the far end of the traction wire is connected with the far end of the thrombus extraction stent, and the traction wire can slide in the hollow inner cavity of the pushing rod. The two ends of the supporting assembly are connected with the traction wire and the thrombus extraction stent respectively. According to the thrombus extraction device, the radial supporting strength of the thrombus extraction stent is improved through the supporting assembly, so that the thrombus extraction stent can keep a certain expansion pipe diameter even under large pressure, and the capability of treating and removing thrombus with higher density, fibrosis degree and hardness in blood vessels is enhanced.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombus removal device. Background technique [0002] Acute ischemic stroke is the damage of nerve tissue caused by ischemic necrosis of local brain tissue due to sudden blockage of blood flow in the brain. 70% to 80% of patients with severe symptoms requiring arteriography can see emboli or thrombus obstruction. The fatality rate of large blood vessel embolism is 53% to 92%. It has become a growing clinical demand to develop a device for removing thrombus in acute ischemic stroke. Complete treatment and removal of thrombus to achieve recanalization of blood vessels is the key to the treatment of acute ischemic stroke. The current thrombus removal technology can at least partially restore the blood flow capacity of blood vessels, but there is still a lot of room for improvement in restoring the blood flow capacity of all remote blood vessels. Thrombi that are denser...
Claims
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IPC IPC(8): A61B17/22A61F2/91A61F2/966
CPCA61B17/22A61F2/91A61F2/966A61F2250/0098A61F2210/0061A61F2210/0014
Inventor 尤金·塞里纳
Owner SHANGHAI BIOCHAM MEDICAL TECH CO LTD