| 摘要 |
A cervical sampler for insertion into the cervical canal of a patient comprises an elongated shaft having a proximal end and a distal end, a brush disposed on the distal end, and a cannula slidably positioned on the shaft. The cannula is moveable between a first position in which the cannula covers the brush and reduces the insertion profile of the cervical sampler, and a second position in which the cannula exposes the brush for operative contact with the cervical canal. There is also disclosed a method of obtaining sample tissue from the cervical canal of a patient with a sampling brush having a shaft and a bristled portion on the shaft. The method comprises covering the bristled portion of the sampling brush by sliding a sheath distally along the shaft and over the bristled portion and inserting the sampling brush into the cervical canal until the bristled portion, covered by the sheath, is disposed within the cervical canal. The method further comprises sliding the sheath proximally along the shaft to expose the bristled portion to operative contact with the cervical canal, and advancing the bristled portion proximally within the cervical canal to collect sample tissue from the cervical canal upon the bristled portion.
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