Conveyor and blood flow guiding stent system
A conveyer and catheter technology, applied in the field of medical devices, can solve the problems of dimensional tolerance, large advancement resistance, and inability to perform operations safely and effectively.
Active Publication Date: 2021-08-06
CONLIFE MEDICAL SCI (SHENZHEN) CO LTD
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Problems solved by technology
[0006] However, in the actual production process, there is a tolerance in the size of the friction drive block 23 and the micro-duct 31, which may easily cause a size mismatch between the friction drive block 23 and the micro-duct 31. The gap between the friction drive block 23 and the blood flow guide bracket 11 is too large, so that the dynamic friction force between the blood flow guide bracket 11 and the microcatheter 31 is relatively large, and the blood flow guide bracket 11 has a resistance to advance. Larger, difficult to push, if the gap between the friction drive block 23 and the inner wall of the microcatheter 31 is larger, the contact extrusion force between the blood flow guide bracket 11 and the friction drive block 23 is small, and the blood flow guide bracket 11 and the friction drive The static friction force between the blocks 23 is not enough to drive the blood flow guide stent 11 to advance, so that the blood flow guide stent 11 cannot advance synchronously with the conveyor 21 or the blood flow guide stent 11 cannot advance
Both of these situations will increase the difficulty of the doctor's operation, increase the risk of surgery, and prevent the operation from being performed safely and effectively.
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[0035] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0036] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...
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The invention relates to a conveyor. The conveyor comprises an inner core assembly and a friction driving block; the friction driving block is used for being connected with the near end of a blood flow guiding stent; the friction driving block is connected with the inner core assembly; and the radial size of the friction driving block is variable. According to the conveyor, due to the fact that the radial size of the friction driving block is variable, when the conveyor is used, the radial size of the friction driving block can be adjusted according to the inner diameter size of a microcatheter, and the radial size of the friction driving block is matched with the microcatheter; and therefore, the problem that the blood flow guide stent is difficult to move in the microcatheter due to dimensional tolerance of the friction driving block and the microcatheter in the production process is avoided, the operation difficulty of doctors is reduced, and the operation safety is improved. The invention further relates to a blood flow guiding stent system.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a transporter and a blood flow guide bracket system. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Intracranial aneurysms are mostly abnormal bulges that occur on the walls of intracranial arteries, and are the number one cause of subarachnoid hemorrhage. Subarachnoid hemorrhage is one of the main types of clinical hemorrhagic stroke. There are two main means of aneurysm treatment: surgical clipping and interventional therapy. Clinical trials have found that the mortality rate of aneurysm patients with interventional therapy is lower than surgical therapy. [0004] Blood flow steering stent is a new treatment method for intracranial aneurysms in recent years. Its principle is to reconstruct the correct path of blood vessels at the aneurysm and restore the direc...
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IPC IPC(8): A61F2/966
CPCA61F2/966A61F2/958A61F2002/9665A61F2/07A61F2002/9583A61F2002/068
Inventor 王高波陈文兆
Owner CONLIFE MEDICAL SCI (SHENZHEN) CO LTD