Tubular sampling device

A tubular sampling device comprising: an elongate shaft comprising a proximal end portion and a distal end portion, the distal end portion comprising a textured scraping body; and a sheath configured to slide on the elongate shaft to alternately cover and cover the textured wiper body. A method of collecting a biological substance using a tubular sampling device, comprising: inserting the tubular sampling device into an anatomy of a patient; guiding a textured scraping body of the tubular sampling device to a target tissue; the textured scraping body abuts against the target tissue for friction; and collecting the biological substance from the target tissue with the textured scraping body. 一种管式采样装置，包括：长形轴，该长形轴包括近端端部部分和远端端部部分，该远端端部部分包括带纹理刮擦本体；以及护套，该护套构造成在长形轴上滑动以交替地覆盖和覆盖带纹理刮擦本体。一种使用管式采样装置来收集生物物质的方法，包括：将管式采样装置插入患者的解剖结构中；将管式采样装置的带纹理刮擦本体导引至目标组织；将带纹理刮擦本体抵靠目标组织进行磨擦；以及用带纹理刮擦本体从目标组织收集生物物质。