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Embolic substance and preparation method thereof

A kind of embolic and biological technology, applied in the field of medical devices, can solve the problems of large push resistance and unfavorable delivery

Pending Publication Date: 2022-03-15
NEUROGUARD MEDICAL (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the transportation of these coils, due to the existence of self-expansion tension, there is a large push resistance between the outer wall of the coil and the inner wall of the microcatheter, which is not conducive to transportation.

Method used

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  • Embolic substance and preparation method thereof
  • Embolic substance and preparation method thereof
  • Embolic substance and preparation method thereof

Examples

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, ...

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Abstract

The invention provides an embolism and a preparation method thereof. The embolism comprises a tubular spiral part with an inner cavity and a shaping part arranged in the inner cavity. The shaping part extends in the axial direction of the spiral part and is connected with the spiral part, the shaping part has a linear primary shape and a three-dimensional secondary shape, and the flexibility of the far end of the shaping part is smaller than that of the near end of the shaping part; such that the distal end of the embolism is less soft than the proximal end of the embolism. The whole shape of the embolism is matched with the shape of the shaping component, the embolism is in a primary shape in the process of being conveyed into the hemangioma or the abnormal blood vessel through the microcatheter, the pushing resistance of the embolism is effectively reduced, the embolism can conform to the tumor wall, and the filling density is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an embolism and a preparation method thereof. Background technique [0002] In recent years, the incidence of vascular diseases caused by abnormal changes in blood vessels or aging has increased year by year, and the manifestations include intracranial aneurysms, visceral aneurysms, peripheral aneurysms, and arteriovenous malformations. Treatment options for such diseases include surgical treatment and minimally invasive interventional therapy. Surgical treatment involves greater trauma and more complications, while minimally invasive interventional treatment has the advantages of small wounds and fast recovery, and is therefore favored by doctors and patients. It is a widely used method to change the hemodynamics. [0003] Currently, coils available on the market include bare metal coils, surfactant-modified coils, and high-swell hydrogel coils. Among them, after the ...

Claims

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Application Information

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IPC IPC(8): A61B17/12
CPCA61B17/12113A61B17/12145A61B17/1215A61B2017/00004A61B2017/0092A61B2017/00526A61B2017/00867
Inventor 杨瑞张朔钱少君余画郭远益
Owner NEUROGUARD MEDICAL (SHANGHAI) CO LTD
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