Left auricle plugging device and transport system
A occlusion device and delivery system technology, applied in the field of medical devices, can solve the problems of puncturing the left atrial appendage, wear of the left atrial appendage and pericardium, complex anatomical structure of the left atrial appendage, etc., to achieve convenient operation, avoid wear, and be conducive to accuracy and safety release effect
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[0061] Example 1, a stent with an outer diameter of 4.0 mm and a wall thickness of 0.2 mm made of a nickel-titanium alloy tube with a diameter of 15 mm, which is in the shape of a regular hexagonal quincunx after complete release, and an occluder with a diameter of the proximal disc of 25 mm , The outer diameter of the delivery system is 4mm, and the effective length is 80cm.
[0062] For the animal experiment, a Beagle dog with a body weight of about 17 kg was selected, and the femoral vein was punctured. Under X-ray monitoring, after the atrial septum is punctured with an atrial septal puncture needle, a guide wire is fed along the atrial septal puncture sheath into the left atrial appendage, and the atrial septal puncture sheath is withdrawn. Send the 12F, 60cm long sheath combination into the left atrial appendage along the guide wire, withdraw the expansion tube, and leave the long sheath and guide wire in the left atrial appendage. Send the stent system along the guide ...
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