| 摘要 |
A translumenal access device may comprise a catheter, an inflatable member, a hollow needle, a stylet, and a guide wire. The catheter may comprise at least one first lumen and at least one second lumen. The at least one first lumen may be configured to slidably receive the guide wire from the proximal end to the distal end of the catheter. The inflatable member may be mounted near the distal end of the catheter, and may be in fluid communication with second lumen. The hollow needle may be mounted on the distal end of the catheter. The hollow needle may be mounted distal to the inflatable member. The stylet may comprise a third lumen and may be configured to be slidably disposed within the hollow needle. The sylet has at least one extended position and at least one retracted position.
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