| 摘要 |
A medical instrument for obtaining access to a site within the body directly inserted through the skin or through an incision in the skin to enable introduction of further medical instruments to the percutaneously accessed site or from the percutaneously accessed site to a more remote site in the body. The instrument comprises a combined medical probe and flexible guide wire for introduction of the further elongated diagnostic or surgical or therapy delivery devices over the guide wire and probe. The combined medical probe and flexible guide wire further comprises a stiff tissue penetrating probe having a probe length between a probe proximal end and a probe distal end, the probe length shorter than the elongated medical device length, and a flexible guide wire body having a guide wire length between a guide wire body proximal end and a guide wire body distal end, the guide wire distal end coupled to the probe proximal end, the guide wire length sufficiently long to support the elongated medical device to enable its over-the-wire advancement over the guide wire body and probe.
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