This heat and moisture exchanger (HME) is characterized by comprising: a heat and moisture exchanger material that is formed by coiling a strip-shaped porous body, said porous body having a plurality of slits formed therein that are arranged along the lengthwise direction, into a spirally-wound shape with the slits facing radially outward and a housing that accommodates the heat and moisture exchanger material. The use of such a structure for an HME makes it possible to reduce pressure loss and improve moisture retention capabilities by means of a relatively simple structure, thereby allowing the inexpensive provision of an HME that lowers the burden on a patient. More specifically, little pressure loss occurs because the slits that are formed in the porous body work as flow paths for exhalation and inhalation, said porous body makes it possible to exhibit superior moisture retention capabilities and moisturizing capabilities, and it is thus possible to provide an HME exhibiting superior production characteristics.本發明之人工鼻之特徵在於包括:濕熱交換材料,其係將形成有於長度方向排列之數個狹縫之帶狀多孔質體捲繞成使狹縫朝向直徑方向外側的螺旋狀而成;及外殼,其收容濕熱交換材料。根據此種人工鼻之構造,能夠以低成本提供一種可利用相對簡單之構造實現壓力損失之減少及濕氣保持性能之提高,且使患者之負擔減輕之人工鼻。更具體而言,由於形成於多孔質體之狹縫作為呼氣及吸氣之流路而發揮作用,故而可提供一種壓力損失較少,可發揮利用多孔質體而實現之優異之濕氣保持性能及加濕性能,且生產性優異之人工鼻。2‧‧‧狹縫4‧‧‧撓曲部5‧‧‧濕熱交換材料6‧‧‧蓋構件7‧‧‧殼體構件8‧‧‧外殼9‧‧‧人工鼻
