HEATING AND HUMIDIFYING DEVICE FOR RESPIRATORY GAS

• Main Authors: TANABE KEISHI, OTOMO TOSHIO, MATSUBARA KAZUO, MATSUBARA TERUMI, KOBAYASHI SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 13.11.2014
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

PROBLEM TO BE SOLVED: To provide a heating and humidifying device for a respiratory gas which is hardly affected by a temperature change from the outside, and can stably supply the sufficiently heated and humidified respiratory gas to a patient without causing dew condensation.SOLUTION: An interface connection hose 5 of a heating and humidifying device 100 for a respiratory gas includes: an air suction hose 21 sending the respiratory gas after heating and humidification to a patient interface 8 from a chamber 3; and a heat insulation flow passage 31 disposed in a state of surrounding the circumference of the air suction hose 21, and making heat-insulating air pass to keep the respiratory gas inside the air suction hose 21 warm. The heat insulation flow passage 31 includes: an inner flow passage 32 disposed in contact with the air suction hose 21; and an outer flow passage 33 disposed outside it. The inner flow passage 32 and the outer flow passage 33 are disposed while communicating with each other in one end part of the heat insulation flow passage 31. In the other end part of the heat insulation flow passage 31, an introduction port 34 for introducing the heat-insulating air into the inner flow passage 32 and a lead-out port 35 leading out the heat-insulating air from the outer flow passage 33, are disposed. 【課題】外部からの温度変化に対して影響を受けにくく、結露を生じさせることなく十分な加温及び加湿がなされた呼吸用ガスを安定して患者に供給することが可能な呼吸用ガスの加温加湿器を提供する。【解決手段】呼吸用ガスの加温加湿器１００のインターフェース接続ホース５は、加温加湿後の呼吸用ガスをチャンバ３から患者インターフェース８に送る吸気ホース２１と、吸気ホース２１の周囲を囲った状態に設けられ保温用空気を通過させることで吸気ホース２１内の呼吸用ガスを保温する保温流路３１とを有し、保温流路３１は吸気ホース２１に接して設けられる内側流路３２と、その外側に設けられる外側流路３３とを有し、内側流路３２と外側流路３３とは保温流路３１の一端部において連通して設けられ、保温流路３１の他端部には内側流路３２に保温用空気を導入する導入口３４と、外側流路３３から保温用空気を導出する導出口３５とが設けられる。【選択図】 図７