Device and method for access to interior body regions

摘要

A device and method is provided to gain access to interior body regions. The system includes a stylet needle assembly, a safety needle assembly, a blade assembly, a retractable obturator assembly, and a dilator assembly. The safety needle assembly accesses an interior body region, after which the blade assembly expands the pathway created by the safety needle assembly. The obturator then further expands the pathway and delivers the dilator assembly to the desired location. The safety needle assembly, obturator assembly, and blade assembly are removed, leaving the dilator assembly in place for future procedures.

主权项

1. An access device comprising:
a safety needle assembly operable to create a pathway through skin and into said interior body regions; a stylet needle assembly operable to create a pathway through skin and into said interior body regions; a blade assembly operable to cut tissue to create a skin nick and provide access into interior body regions; a retractable obturator assembly operable to expand said pathway into said interior body regions; and a dilator assembly operable to maintain said pathway and provide access to said interior body regions.