Medical Coil

A coil and spring structure technology, applied in the field of medical devices, can solve problems such as increasing the risk of aneurysm recurrence, and achieve the effects of increasing the embolization volume and density, promoting thrombosis, and shortening the absorption cycle.

CN112274204BActive Publication Date: 2022-07-19MICROPORT NEUROTECH SHANGHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-07-19

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Abstract

The present invention relates to a medical spring coil, comprising a primary spring structure and at least one developing mark. The primary spring structure comprises at least a section of a first spring and at least a section of a second spring that are axially connected, wherein the at least a section of the first spring A spring includes at least one absorbable spring, and the at least one section of the second spring includes at least one non-absorbable spring. Among them, the absorbable spring has the characteristics of short absorption period and high absorption ratio, which is beneficial to reduce or even eliminate the occupancy effect in a relatively short period of time. The second spring mainly accumulates at the neck of the tumor to provide attachment conditions for the endothelialization of the neck of the tumor.
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Description

technical field

[0001] The invention relates to the technical field of medical devices, in particular to a medical coil used for aneurysm embolization. Background technique

[0002] Patients with intracranial aneurysms often present with headaches, eye movement disorders, and swelling of the limbs. This is due to the mass effect of the aneurysm, resulting in the corresponding symptoms of the aneurysm compressing peripheral nerves, blood vessels, and organs. At present, endovascular interventional micro-coil embolization technology has become one of the main methods for the treatment of intracranial aneurysms. The use of coils to treat aneurysms can inhibit the blood flow in the tumor, rapidly promote the thrombosis in the tumor, and can promote the aneurysm at the neck of the aneurysm. The formation of endothelialization is the guarantee of effective treatment of aneurysm and prevention of postoperative aneurysm rebleeding or recurrence. However, the coils used clinically a...

Examples

Embodiment 1

[0042] Please refer to figure 1 , This embodiment provides a medical coil, which is used for embolization of lumen lesions such as aneurysms. It includes a primary spring structure and at least one developing mark 6, the primary spring structure includes at least a section of the first spring 1 and at least a section of the second spring 2 that are axially connected, and at least one developing mark 6 is arranged on at least a section of the first spring. 1 and the connection of at least a section of the second spring 2. Preferably, a first-stage spring structure of a medical coil in Embodiment 1 of the present invention mainly includes a first spring 1 and a second spring 2. The outer diameters of the first spring 1 and the second spring 2 are the same, wherein the first spring 1 and the second spring 2 have the same outer diameter. The spring 1 and the second spring 2 are uniformly shaped spring structures formed by winding corresponding wires on a mandrel, which are genera...

Embodiment 2

[0052] Please refer to image 3 , the second embodiment provides a medical spring coil, comprising a primary spring structure, a developing wire 3, an anti-untwisting member 4, two fixing structures 5 and a developing mark 6, the primary spring structure consists of a first A spring 1 and a section of a second spring 2 are connected to form the second embodiment. The range of the wire diameter of the developing wire 3 in the medical spring coil, the installation position of the developing wire 3 on the primary spring structure, and the installation of the anti-untwisting member 4 The position, the structure and material of the fixing structure 5 , and the range of the outer diameter and the lateral dimension of the developing mark 6 are the same as those of the medical spring coil in the first embodiment, and will not be repeated here. like image 3 As shown, the main difference between the medical spring coil of the second embodiment and the first embodiment is that the seco...