A spring coil conveying release system

Abstract

The embodiment of the present invention relates to a spring coil conveying release system, which includes: a spring coil, a developing code mark and a conveying release device; the developing code mark is fixedly connected with the spring coil; the conveying release device includes an elastic balloon and a conveying tube; The end is placed in the development code engraving, and the proximal end is bonded to the delivery tube; the delivery tube communicates with the inside of the elastic balloon to form a chamber for containing gas; the proximal end of the delivery tube is provided with an inflatable sealing part, and the proximal end There is a fracture structure on one side at a certain distance from the inflatable sealing part; the external inflatable device inflates the chamber through the inflatable sealing part; the spring coil and the development code are engraved on the elastic balloon and the delivery tube, and pass through the microcatheter Transport to the target position; the fractured structure is broken by external force, the gas in the chamber leaks, the elastic balloon shrinks, and comes out from the developing code engraving, so that the developing code engraving and the elastic balloon are separated, so that the spring coil and the developing code engraving are released from the transportation The device is released.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a spring coil delivery and release system. Background technique [0002] At present, clinically, for patients with aneurysms, especially cerebral aneurysms, arterial interventional coils are usually used for packing treatment. However, the coil implantation for the treatment of aneurysms must achieve controllable release of the implanted part. There are many ways to release the spring coil. Among them, the mainstream method of mechanical release is the ferrule type, that is, adding a movable connecting rod. The end of the movable connecting rod is spherical. The first end of the movable connecting rod is connected with the spring coil. The movable connecting rod is assembled and placed into the delivery catheter, and the coil is released by withdrawing the release wire. However, during release, the release point is easily affected by mechanical force, resulting in deviat...

AI Technical Summary

Problems solved by technology

However, during release, the release point is easily affected by mechanical force, resulting in deviation of the implant position, increasing the risk of surgery for the doctor, affecting the treatment effect, and even endangering the patient's life

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