【図面の簡単な説明】[Brief explanation of drawings] 第１図および第２図はこの考案の第１の実施例
を示すもので、第１図は内視鏡の処置具挿通用チ
ヤンネルに挿通された内視鏡用細胞採取具を示す
縦断面図、第２図は細胞採取用具の使用状態を示
す縦断面図、第３図は第２の実施例の要部構成を
示す縦断面図、第４図および第５図は第３の実施
例を示すもので、第４図は要部構成を示す平面図
、第５図は第４図の−線断面図、第６図およ
び第７図は第４の実施例を示すもので、第６図は
要部構成を示す縦断面図、第７図は同斜視図、第
８図および第９図は第５の実施例を示すもので、
第８図は要部構成を示す平面図、第９図は第８図
の−線断面図、第１０図および第１１図は第
６の実施例を示すもので、第１０図は内視鏡の処
置具挿通用チヤンネルに挿通された内視鏡用細胞
採取具を示す縦断面図、第１１図は閉鎖膜の破断
状態を示す縦断面図、第１２図は従来例を示す要
部の縦断面図、第１３図および第１４図は別の従
来例を示すもので、第１３図は要部の縦断面図、
第１４図は極度に湾曲のかけられた内視鏡の処置
具挿通チヤンネル内で細胞採取具を進退させた状
態を示す縦断面図である。 １…内視鏡、２…処置具挿通用チヤンネル、３
…外管、３ａ…閉鎖膜、４…操作ワイヤ、５…ブ
ラシ（細胞採取用具）、９…操作機構。 1 and 2 show a first embodiment of this invention, and FIG. 1 is a longitudinal cross-sectional view showing an endoscopic cell collection device inserted into a channel for inserting a treatment device of an endoscope. , FIG. 2 is a vertical cross-sectional view showing the state of use of the cell collection tool, FIG. 3 is a vertical cross-sectional view showing the main part configuration of the second embodiment, and FIGS. Fig. 4 is a plan view showing the configuration of main parts, Fig. 5 is a sectional view taken along the line - - in Fig. 4, and Figs. 6 and 7 show the fourth embodiment. 7 is a longitudinal sectional view showing the structure of the main part, FIG. 7 is a perspective view thereof, and FIGS. 8 and 9 show the fifth embodiment.
FIG. 8 is a plan view showing the configuration of the main parts, FIG. 9 is a sectional view taken along the line -- in FIG. 8, FIGS. 10 and 11 show the sixth embodiment, and FIG. 11 is a longitudinal sectional view showing the endoscopic cell collection device inserted into the treatment instrument insertion channel, FIG. 11 is a longitudinal sectional view showing the state of rupture of the obturator membrane, and FIG. 12 is a longitudinal sectional view of the main part showing the conventional example. A plan view, FIG. 13, and FIG. 14 show another conventional example, and FIG. 13 is a longitudinal sectional view of the main part;
FIG. 14 is a longitudinal cross-sectional view showing a state in which a cell collection device is advanced and retreated within an extremely curved treatment device insertion channel of an endoscope. 1... Endoscope, 2... Treatment instrument insertion channel, 3
... Outer tube, 3a... Closing membrane, 4... Operating wire, 5... Brush (cell collection tool), 9... Operating mechanism.