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Mechanical release coil system

A spring coil and mechanical technology, applied in the field of medical devices, can solve the problems of no coil, inconvenience for surgeons, and inability to observe coil release intuitively, so as to reduce manufacturing and processing costs, achieve instant release, and simple manufacturing process.

Active Publication Date: 2021-12-07
珠海神平医疗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

) needs to surround the solder joints, so the radius of the coils needs to be slightly larger than the length of the solder joints, which makes it impossible to connect a coil with a smaller diameter to the push rod, and there is no suitable small-sized coil for filling small aneurysms Available, but also not conducive to dense packing of aneurysms
[0006] In addition, although there are existing detachable mechanical release coils, the operator cannot visually observe whether the coils have been released, and can only confirm whether the coils have been released by retracting the push rod, which brings inconvenience to the operator and increases the risk of surgery sex

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Basic as attached figure 1 Shown: figure 1 The left end in the middle is the proximal end, which refers to the end of the surgical operation, figure 1 The right end is the distal end, which refers to the end away from the operator.

[0030] The mechanical release coil system includes the push rod 2, the spring coil 6 and the connection assembly. The improvement in this embodiment lies in the push rod 2 and the connection assembly. For the connection assembly, it can be a complete wire or a plurality of wires. connected, the spring ring 6 is sleeved on the connection assembly, and the connection assembly is located in the part of the spring ring 6 and is provided with a protruding part near the proximal end of the spring coil 6, and the protruding part can be glued on the connection assembly Blocks made of plastic, metal or protrusions made of other materials are specifically combined in this embodiment. The connection assembly in this embodiment uses an anti-untwistin...

Embodiment 2

[0041] combine Figure 4 As shown, this embodiment is improved on the basis of Embodiment 1. The far end of the push rod 2 is divided into two sections. The right end of the left part of the push rod 2 is a tapered surface. The elastic part 16 in the example is a spring tube, the proximal end of the spring tube is connected to one end of the tapered surface of the push rod 2, the distal end of the spring tube is connected to the lumen containing the hook 3 on the push rod 2, and the far end of the guide wire 1 is pulled. Both the end and the elastic portion 16 are provided with an X-ray-opaque developing mark 15 .

[0042] In this embodiment, during the callback process of the spring ring 6, when the release point is subjected to a pulling force to the far end, since the collar 4 passes through the draw ring 5 and hangs on the hook 3 to form a pin connection (the hook 3 is equivalent to a pin), The pulling force to the distal end of the spring coil 6 will act on the pulling g...

Embodiment 3

[0045] combine Figure 5 As shown, the present embodiment is improved on the basis of Embodiment 1. An upper baffle 12 is integrally formed on the top of the hook 3, and a lower baffle 14 is welded on the notch end of the push rod 2 provided with the hook 3. The plate 14 is an elastically deformable metal shrapnel (such as a leaf spring, etc.), and a pull cord 13 is bolted to the pulling guide wire 1 , and the pull cord 13 is bolted to the bottom end of the lower baffle plate 14 . In this way, when the collar 4 is positioned on the hook 3, the top of the collar 4 is blocked by the upper baffle 12, and the lower end of the collar 4 is blocked by the lower baffle 14, so that the collar 4 is positioned on the hook 3, avoiding the The ring 4 slides upwards and disengages from the hook 3 under the rightward pulling force of the connecting piece 9, while avoiding that the connecting piece 9 is relatively loose, and the collar 4 is separated from the bottom end of the hook 3.

[004...

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Abstract

The present invention relates to the field of medical devices, in particular to a mechanical release spring coil system, including a push rod, a spring ring and a connecting assembly. The other end is against the far end of the push rod, and the connecting assembly is connected to the push rod. This solution facilitates the installation of spring coils with smaller specifications and improves the therapeutic effect of the aneurysm.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a mechanical release coil system. Background technique [0002] Intracranial aneurysms mostly occur on the abnormal bulging of the intracranial artery wall, and are the first cause of subarachnoid hemorrhage. In cerebrovascular accidents, they rank second only to cerebral thrombosis, hypertension and cerebral hemorrhage. Third, it can occur at any age. Its mortality rate is as high as 25%-60%, and the disability rate of survivors is close to 50%. The main cause of death was early complications such as hemorrhage and cerebral vasospasm. Intracranial aneurysm is an "uncertain time bomb" in the human body. The mortality rate of the first aneurysm rupture and bleeding is 20%-30%, and about 30% of the aneurysms that have not been cured after the first rupture and bleeding will rupture again within one year. Hemorrhage and die, about 50% will rupture again and die within 5 years. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/12
CPCA61B17/12113A61B17/1214A61B2017/12054
Inventor 王玉峰邱海平
Owner 珠海神平医疗有限公司
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