| 摘要 |
There is disclosed an apparatus and method for dilating the ligamentum flava or other soft tissue in the human body comprising a radially expandable dilator defining a first expandable tube and an offset tubular guide. A second expandable tube having an integral external guide cam is inserted into the opening of the first expandable tube and aligned with the slit in the first tube effecting radial expansion of the expandable dilator, thereby causing dilation of the ligamentum flava or other tissue. The dilation of the ligamentum flava or other tissue allowing insertion of larger medical leads or surgical instruments into the epidural space.
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