Medical implant delivery sheath and medical implant delivery system

Abstract

The invention relates to a medical implant delivery sheath and a medical implant delivery system. The delivery system comprises a delivery sheath, a pushing rod and a medical implant, the pushing rod is used for delivering the medical implant to a target position through a cavity of a catheter, the delivery sheath comprises a catheter and a skirt portion, the skirt portion is located at the far end of the catheter and is configured to have a folded state and an unfolded state, the skirt portion in the unfolded state forms a containing space, and the containing space is used for guiding or containing the medical implant. According to the invention, the resistance of recycling a medical implant back to a sheath can be reduced, and the surgical operation difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a medical implant delivery sheath and a medical implant delivery system. Background technique [0002] Atrial fibrillation is the most common sustained arrhythmia, which has the risk of inducing ischemic stroke, so the prevention of atrial fibrillation is of great significance. Recent studies have shown that closure of the left atrial appendage can effectively prevent the risk of ischemic stroke caused by atrial fibrillation. The existing occluders used for left atrial appendage occlusion can basically be divided into two categories, one is a plug-type occluder represented by Watchman, and the other is a cap-type occluder represented by LAmbre. [0003] The above two types of occluders need to rely on the delivery system to transport them to the designated position and then release them. When the release position of the occluder is not good, it is necessary to put the oc...

AI Technical Summary

Problems solved by technology

In left atrial appendage occlusion, the distal end of the delivery sheath will enter the interior of the left atrial appendage. In order to reduce damage to the left atrial appendage and prevent pericardial effusion caused by puncturing the wall of the left atrial appendage, the distal end of the delivery sheath is required to be soft. And it is required to have high flexibility and toughness, but this also increases the resistance of the occluder back into the sheath, which is not convenient for the recovery of the occluder, and the tail of the occluder is easily entangled after the delivery sheath tube, resulting in After the occluder was released, the tail could not be opened smoothly, resulting in the failure of the operation

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