| 摘要 |
Multifunction needle/catheter devices and applications. In one instance, the device includes a substantially tubular and flexible catheter, where the catheter has an opening at an end of a distal section of the catheter and one or more apertures longitudinally spaced away from the end of the distal section, and a removable substantially rigid core capable of facilitating vein cannulization, the removable substantially rigid core being disposed within the catheter.
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