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Dilator assembly

A dilator and component technology, applied in the field of medical devices, can solve problems such as damage to blood vessel walls, and achieve the effects of reducing pollution, facilitating the introduction process, and being difficult to separate.

Active Publication Date: 2022-02-18
上海玮琅医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, when the stent catheter is placed in the patient, there is also the problem of the dilator slipping relative to the introducer sheath and damaging the vessel wall

Method used

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention.

[0036] Below in conjunction with accompanying drawing the technical scheme of the present invention is described in detail:

[0037] Such as figure 1 As shown, an example of a dilator assembly of the present invention is shown. The dilator assembly includes an outer dilator 1, an inner dilator 2, and an expansion catheter 3 (although the expansion catheter is shaped as a tapered catheter in the illustration, but, This shape is not a limitation to the present invention, and the expansion catheter can be a variable-diameter catheter with a non-uniform diameter after release, especially a cat...

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Abstract

The invention relates to a dilator assembly which comprises a dilator, a dilation catheter, a sheath, a hemostasis valve, a push rod shell and a push rod. The dilation catheter is fixed at the far end of the sheath, the near end of the sheath is connected with the hemostasis valve, and the dilator can freely slide in the sheath; the dilator is jointly composed of a hollow tubular inner dilator and a tubular outer dilator arranged outside the inner dilator, the outer dilator is connected with the inner dilator in a closed mode at the tail end of the far end, an annular gap exists between the outer dilator and the inner dilator, and the annular gap is used for at least partially containing an dilation catheter. The guide-in process of the dilation catheter is safer and more effective; the locking structure is arranged at the near end of the dilator, a leading-in sheath and the dilator can be locked before the dilator enters the human body, and the dilator is prevented from sliding back and forth after the dilator enters the human body to damage the blood vessel wall or other coelomic membranes.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a dilator assembly. Background technique [0002] Deep vein thrombosis (DVT) is a blood return disorder caused by abnormal coagulation. It is a very dangerous disease that can cause bruises, pulmonary embolism, and even shock, venous gangrene, and death. Pulmonary embolism, when the thrombus falls off, can enter the pulmonary artery along the blood flow, causing pulmonary embolism. Acute pulmonary embolism is often misdiagnosed and missed, and the mortality rate is 20% to 30%. According to a series of studies, the use of intravenous thrombectomy stents is a timely and effective treatment. It mainly stretches the blood vessel through the sheath system and the dilator, sends the thrombus retrieval catheter system into the blood vessel, unfolds the thrombus retrieval element, drags the thrombus retrieval catheter, pulls the coagulated blood clots out of the body, and removes the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/22A61B2017/22079Y02A50/30
Inventor 朱国庆周而辰李志刚王国辉
Owner 上海玮琅医疗科技有限公司
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