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Spring ring

A technology of coils and bodies, applied in the field of coils, can solve problems such as recanalization of intracranial aneurysms, rupture of aneurysms, and easy damage to peripheral nerves and blood vessels, so as to promote rapid endothelialization, reduce operation difficulty, and reduce arteriosclerosis. The effect of tumor recanalization risk

Pending Publication Date: 2017-11-07
SHANGHAI SHENQI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the risk of rupture of the aneurysm during the operation when the bare coil made of metal is released in the prior art; the gravity compression of the excessive aneurysm after the coil is filled is easy to damage the peripheral nerves and blood vessels; For technical problems such as intracranial aneurysm recanalization, the present invention provides a coil with fiber bundles. The position and shape of the fiber bundles on the coil of the present invention are distributed so that when the coil is released, it is At the same time, in the axial direction of the coil, it is easier to transmit the pushing force without coil stacking, which reduces the difficulty of operation for the operator and reduces the risk of aneurysm rupture

Method used

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example 1

[0059] The outer diameter OD of the spring coil body 1 is 0.5 mm, the length CL is 50 cm, and the material is platinum-tungsten alloy; the fiber bundle 2 is composed of 12 strands of polymer fibers with a diameter Φ of 0.05 mm. From the proximal end to the distal end of the coil, the coil body 1 is divided into a first segment, a second segment and a third segment of equal length; wherein, the fiber bundle 2 fixed on the first segment the length L 1 The angle α between two adjacent fiber bundles 2 is 45°; the length L of the fiber bundle 2 fixed on the second section 2 is 3 mm, the angle α between two adjacent fiber bundles 2 is 90°; the length L of the fiber bundle 2 affixed to the third segment 3 The angle α between two adjacent fiber bundles 2 is 180°. The material of the fiber bundle 2 is polypropylene (PP); the material of the release member 3 is platinum-tungsten alloy, the length a of the release member 3 is 5 mm, the maximum outer diameter cross-sectional dimension c...

example 2

[0061] The outer diameter OD of the spring coil body 1 is 0.4 mm, the length CL is 40 cm, and the material is platinum-iridium alloy; the fiber bundle 2 is composed of 15 strands of polymer fibers with a diameter Φ of 0.03 mm. From the proximal end to the distal end of the coil, the coil body 1 is divided into a first section and a second section of equal length; wherein, the length L of the fiber bundle 2 affixed to the first section 1 4mm, the angle α between two adjacent fiber bundles 2 is 60°; the length L of the fiber bundle 2 affixed to the second section 2 The angle α between two adjacent fiber bundles 2 is 120°. The material of the fiber bundle 2 is polyethylene terephthalate (PET); the material of the release member 3 is a platinum-iridium alloy, the length a of the release member 3 is 3mm, and the maximum outer diameter cross-sectional dimension c is 0.5 mm, the minimum cross-sectional thickness d is 0.2 mm, and two notches 31 are arranged on it, and the axial lengt...

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Abstract

The invention discloses a spring ring. The spring ring comprises a spring ring body and a fiber bundle fixedly connected to the spring ring body. The spring ring has the following beneficial effects: according to the structure design of the provided spring ring, the applied friction force in a conveying pipe is lower while the spring ring is released; and the pushing force is more easily and better transmitted along the axial direction of the spring ring, and the stacking situation of the spring ring cannot be produced, so the operation difficulty of an operator is reduced, and the aneurysms rupture risk is reduced.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a spring coil. Background technique [0002] Hemangioma is a hemangioma-like protrusion caused by abnormal changes in blood vessels, especially an aneurysm. When the blood pressure in the blood vessel suddenly rises, the aneurysm ruptures and bleeds, which will cause disability or death of the patient. Since the first report of Guglielmi et al. in 1991, Guglielmidetachable coil (electrolysis detachable coil) for the treatment of intracranial aneurysms, with the development of materials and treatment equipment, coil embolization has become the main treatment for intracranial aneurysms. [0003] However, when the existing metal coils are released, there is a risk of rupture of the aneurysm during the operation; after the coil is filled, the gravity of the aneurysm is too large to damage the peripheral nerves and blood vessels; in addition, the bare metal coil is current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12113A61B17/1214A61B2017/12054
Inventor 王森宋睿周国磊戴志豪王海兰王鼎曦
Owner SHANGHAI SHENQI MEDICAL TECH CO LTD
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