PROBLEM TO BE SOLVED: To prevent air from being mixed, when sampling gas emitted from the surface of the skin.SOLUTION: A skin gas sampler comprises a casing 110 which constitutes a tubular opening, a tubular flexible membrane member 120 which is provided along an inner side surface of the casing, and a gas sampling vessel 140 which is connected to the casing with air-tightness. Both terminal portions of the tubular flexible membrane member 120 is adhered to the inner side surface of the casing to form a sealed space between the tubular flexible membrane member and the inner side surface of the casing. When a fluid substance is supplied into the sealed space, the tubular flexible membrane member is expanded toward the center of the tube. A value of a product of a thickness (t) of the tubular flexible membrane member and a force σ required for extending a cube having a unit length of the tubular flexible membrane member in one direction for the unit length satisfies an inequality in the figure.COPYRIGHT: (C)2013,JPO&INPIT【課題】皮膚表面から放出されるガスを採取する際に、空気の混入を防止する。【解決手段】皮膚ガス採取器具が、管状開口部を構成する筐体110と、筐体の内側面に沿って設けられた管状可とう性膜部材120と、筐体に気密性を持って繋がれたガス採取容器140を有し、管状可とう性膜部材120は、その両端部が筐体の内側面に密着して、筐体の内側面との間に密閉された空間を形成し、密閉された空間に流動性物質が供給されると、管状可とう性膜部材が管中心に向かって膨らむ。管状可とう性膜部材の厚さtと、管状可とう性膜部材の単位長さの立方体を一方向に単位長さ伸ばすに要する力σとの積の値が、下記不等式を満たす。【選択図】図1
