Embolic system separation device

Abstract

The invention discloses an embolism system separating device which comprises a spring ring, a pushing rod provided with an inner cavity and a releasing mechanism, the releasing mechanism comprises a macromolecule silk thread, a cutting thread, a locking piece and a far-end connecting ring, the near end of the spring ring is fixedly connected with a spring ring connecting piece, and the far-end connecting ring and the locking piece are arranged between the spring ring connecting piece and the pushing rod. The far end of the locking piece is fixedly connected with the far-end connecting ring, the near end of the locking piece is fixedly connected with the pushing rod, a left wire clamping groove and a right wire clamping groove with openings facing an inner cavity of the pushing rod are formed in the end face of the near end of the locking piece, the end face of the far end of the far-end connecting ring abuts against the end face of the near end of the spring ring connecting piece, and a macromolecule silk thread penetrates through the spring ring. The spring ring is connected with the locking piece in a clamped mode through a macromolecule silk thread, a cutting thread penetrates through an inner cavity of the pushing rod, the macromolecule silk thread is broken through the cutting thread, and the device has the advantages of being simple in structure, convenient to operate, short in releasing time and the like.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an embolization system separation device. Background technique [0002] Stroke is divided into hemorrhagic stroke and ischemic stroke. Intracranial aneurysm is a hemorrhagic stroke disease with high morbidity and mortality. At present, the most widely used treatment plan in clinical treatment is to use interventional therapy to embolize the aneurysm with coils, so as to prevent the aneurysm from rupture and bleeding. [0003] In the interventional operation of coil embolization of aneurysms, it is necessary to deliver coils of different sizes and different three-dimensional or two-dimensional shapes into the aneurysm until the spring in the aneurysm can densely pack the entire aneurysm. Clinically, interventional surgery for each aneurysm usually requires several to a dozen coils to complete the dense packing of the aneurysm. The stuffing of each spring coil needs to go...

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of this method are as follows: first, because the pulling guide wire and the connecting piece are very thin, a pull ring is set at the far end of the pulling guide wire, and a collar is set at the near end of the connecting piece, which is inconvenient to process. It is necessary to pass the loop through the pull ring, and then hang the loop on the hook, which is difficult to operate and increases the manufacturing cost; the second is that the pulling guide wire and the connecting piece are thin and soft. The probability that the loop will be more tightly set on the hook, but the loop cannot be detached from the hook, the possibility of failure of the release of the spring coil is extremely high, which increases the risk of surgery; the third is that after the loop is released from the hook, The collar and the pull ring are still in the state of socketing, pulling the pull guide wire, the hole diameter of the pull ring is tightened, and the pull ring becomes a long strip, and the collar is not easy to come out from the hole of the pull ring, which increases the release of the spring coil time, and there is a great possibility that the pull ring and the collar cannot be released, resulting in the failure of the release of the spring ring; the fourth is that when the pull ring is pulled to separate the collar from the pull ring, because the pull ring and the collar are not easy to release, there is a high probability Pull out a part of the coil from the aneurysm, so that the coil stays in the blood vessel; fifth, when the ring is pulled backward, the ring will move back with the ring, and the connecting piece will move back with the coil, and the coil will Will enter the inner cavity of the push rod, causing the spring coil to fail to release

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