Percutaneous aortic valve implantation guide wire

Abstract

The percutaneous aortic valve implantation guide wire comprises a guide wire body (1), the guide wire body (1) comprises a first section (11), a second section (12) and a spiral section (13) which are connected, the first section (11) is located at the near end, the spiral section (13) is located at the far end, and the two ends of the second section (12) are connected with the first section (11) and the spiral section (13) respectively; a first included angle is formed between the first section (11) and the second section (12); the spiral section (13) is formed by curling a guide wire into a spiral ring, and the spiral ring of the spiral section (13) is located in the same plane. According to the percutaneous aortic valve implantation guide wire, the guide wire pushing efficiency and speed are improved through the bending between the first section and the second section, the myocardial perforation risk is reduced through the spiral section, the anchoring effect is improved, the structural design is reasonable, operation is easy, mastering is easy, and the percutaneous aortic valve implantation success rate can be increased.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a guide wire for percutaneous aortic valve implantation. Background technique [0002] Percutaneous aortic valve implantation refers to percutaneous puncture or opening of peripheral blood vessels, pushing the catheter to the aortic valve, and performing aortic valve replacement to relieve aortic valve stenosis. It is a treatment for patients with surgical contraindications. First choice for patients with aortic stenosis. [0003] The complex structure of the percutaneously implantable aortic valve requires a large diameter of the delivery sheath, coupled with the patient's aortic sclerosis and distortion, resulting in great tension and resistance when pushing the artificial valve along the delivery sheath to the heart. A guiding wire needs to be placed in the left ventricular lumen as an aortic valve push track to avoid damage to the aortic wall by the deliver...

AI Technical Summary

Problems solved by technology

[0004] However, the existing guide wire is linear, and when the guide wire is delivered in the aorta, the angle of the aorta will force the guide wire to bend, and the reaction force of the guide wire bending will cause the aorta to twist, and at the same time, the huge pushing force may cause Aortic dissection, myocardial perforation, resulting in surgical failure and even patient death

Moreover, after the distal end of the guide wire enters the ventricle, the forward force of the guide wire is unevenly distributed at the head end, and it is easy to concentrate on the linear guide wire head, and there is a risk of myocardial injury and perforation

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