| 摘要 |
A right coronary artery catheter including a hub, a linear flexible tubular body stock extending from the hub and a curved flexible tubular stem extending from the bod y stock. The stem includes a distal end, a primary curved section and a secondary curved sect ion. The primary curved section is positioned between the distal ends of the stem and bod y stock. The secondary curved section is positioned between the primary curved section and th e distal end of the body stock, and extends in a direction generally opposite the direction of t he primary curved section. The radii and lengths of the stem are adapted to cause a portion of the stem between the secondary curved section and the distal end of the body stock to engage a co ntinuous length of the upper wall of the aortic arch, to cause the secondary curved section to d irect the stem generally downwardly and across the ascending aorta toward a contralateral wall opposite the ostium of the right coronary artery, and to cause the primary curved section to engage the contralateral wall at a location adjacent to the ostium of the left coronary art ery and to direct an end section of the stem across the ascending aorta toward the ostium of the righ t coronary artery, when the catheter is positioned within the patient with the distal end o f the stem engaged with the ostium of the right coronary artery.
|
