| 摘要 |
An apparatus that includes a tubular body portion having dimensions suitable for insertion into a human blood vessel as a guide catheter, the tubular body portion having a proximal end and a distal end and a lumen therethrough, where the distal portion of the tubular body portion includes a first convex curved portion, a concave curved portion distal to the first convex curved portion, and a second convex curved portion distal to the concave curved portion.
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