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Degradable medical spring ring

A spring coil and medical technology, applied in the field of medical devices, can solve the problems of coil metal material, thrombosis, etc., and achieve the effects of avoiding space occupation effect, precision and cost advantages, and excellent physical and chemical properties

Active Publication Date: 2016-03-23
PEOPLES HOSPITAL PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above technical problems, the present invention provides a degradable medical coil to solve the problems of coil metal material and rapid thrombosis

Method used

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Examples

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Effect test

no. 1 example

[0057] The degradable medical coil in this embodiment includes: a bare metal coil body 41 and a drug coating 42 covering the surface of the bare metal coil body 41 .

[0058] Wherein, the bare metal spring coil body 41 is made of pure magnesium material, that is, 99.0% pure magnesium in Table 1. The primary diameter of the bare metal coil body 41 (that is, the diameter at the widest point in the released state) is preferably in the range of 0.25-0.35 mm, and it can be densely wound or wound with a preset gap. According to different requirements of spring softness, the optimal range of spring wire diameter is 0.02-0.07mm. At the same time, the coils have different three-dimensional shapes after heat treatment to adapt to different shapes of aneurysms and arteriovenous malformations. The typical shapes are divided into three-dimensional spiral cylinder, three-dimensional cone or spherical spiral.

[0059] Figure 2A ~ Figure 2C It is an enlarged schematic diagram of the partia...

no. 2 example

[0065] The degradable medical coil of this embodiment is substantially the same as that of the first embodiment, except that the bare metal coil body 41 is made of a magnesium-zinc-manganese alloy material.

[0066] In the magnesium-zinc-manganese alloy material, the mass percentages of various components are as follows: magnesium is 90%; zinc is 5.5%; manganese is 1.2%; and calcium is less than 0.1%. In addition to the above four elemental components, the magnesium-zinc-manganese alloy material also contains other elemental components.

[0067] Experiments have proved that the degradable medical coil meets the application requirements.

no. 3 example

[0069] The degradable medical coil of this embodiment is substantially the same as that of the first embodiment, except that the bare metal coil body 41 is made of a magnesium-zinc-manganese alloy material.

[0070] In the magnesium-zinc-manganese alloy material, the mass percentages of various components are as follows: 92% of magnesium; 5% of zinc; 1% of manganese; and less than 0.1% of calcium. In addition to the above four elemental components, the magnesium-zinc-manganese alloy material also contains other elemental components.

[0071] Experiments have proved that the degradable medical coil meets the application requirements.

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Abstract

The invention provides a degradable medical spring ring, which comprises a bare metal spring ring body, wherein the bare metal spring ring body is prepared from magnesium or magnesium alloy materials. The technical defects are overcome. The magnesium or magnesium alloy is used as a biodegradable material to be applied to a medical spring ring. The magnesium element is an indispensable element in the process of maintaining the normal metabolism process of the human body; the elements of the medical spring ring after the degradation can be used by the human body; the stable concentration of the elements can be maintained by the kidney and the small intestines; meanwhile, the elements can be completely degraded after the safe period; no residue is left; the space occupying effect is avoided; the influence of metal artifacts on the later-stage radiographic follow-up visit can be avoided; and the use value is high.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a degradable medical coil used for the treatment of diseases such as aneurysm and arteriovenous malformation. Background technique [0002] With the rapid improvement of people's living standards and medical diagnostic technology, the incidence of screening for various aneurysms and arteriovenous malformations has correspondingly increased significantly. By aneurysm, it is an angioma-like protrusion due to an abnormal change in the blood vessel of an artery. When the intravascular blood pressure suddenly rises or arteriosclerosis occurs, the aneurysm will rupture and bleed, which will cause disability or death of the patient. [0003] Domestic and foreign treatment methods for aneurysms and AVMs (eg, intracranial aneurysms, visceral aneurysms and peripheral aneurysms, AVMs, and hemangiomas) are mainly divided into surgical treatment and endovascular interventional treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61L31/02A61L31/08A61L31/14A61L31/16
CPCA61B17/12109A61B17/12113A61B17/12118A61B17/12145A61B17/1215A61B2017/00831A61B2017/00893A61B2017/1205A61L31/022A61L31/08A61L31/148A61L31/16A61L2300/252A61L2300/254A61L2300/418
Inventor 张韬杨力张学民张小明郭伟李清乐沈晨阳李伟浩陈峰李悦刘杰
Owner PEOPLES HOSPITAL PEKING UNIV