PROBLEM TO BE SOLVED: To provide an optical transcutaneous oxygen sensor that can be tightly fixed on skin easily, and a transcutaneous oxygen concentration measurement device having the same.SOLUTION: An optical transcutaneous oxygen sensor 11 is configured to measure oxygen diffusing from blood through body tissue on a surface of the skin, and comprises a gas-impermeable transparent resin film 13, and a transparent polymer material 15 containing a pigment compound 17 that emits light when excited and varies emission intensity in accordance with oxygen concentration. The polymer material 15 is adhered to one surface of resin film 13, and the surface is coated with an adhesive 19 in an area surrounding the polymer material 15.SELECTED DRAWING: Figure 1【課題】皮膚への密着固定が容易な光学的経皮酸素センサ及びこれを用いた経皮酸素濃度測定装置を提供する。【解決手段】血液中から生体組織を経て拡散する酸素を皮膚表面で測定する光学的経皮酸素センサ１１は、ガス不透過性の透明な樹脂フィルム１３と、励起状態下で発光し酸素濃度に応じて発光強度を変化させる色素化合物１７を含有する透明なポリマ体１５とを備え、樹脂フィルム１３の一方の表面にポリマ体１５が固着され、その表面におけるポリマ体１５の周囲に粘着剤１９が塗布されている。【選択図】図１
