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US 2024/0197933 A1Published application
Medical rubber product
AssigneeSumitomo Rubber Industries, Ltd.
InventorsYogun KIDA, Kazuki NOJIRI, Kei TAJIMA, Yusuke SHIBATA
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AssigneeSumitomo Rubber Industries, Ltd.
InventorsYogun KIDA, Kazuki NOJIRI, Kei TAJIMA, Yusuke SHIBATA
Estimating the term…
An object of the present invention is to provide a sterilization method for a medical rubber product in which non-eluting characteristics are maintained even after sterilization with gamma ray and with which less troubles occur in a medical product manufacturing process. The medical rubber product according to the present invention is a medical rubber product formed from an elastic material and sterilized by being irradiated with gamma ray or electron ray (beta ray), wherein, when measurement is performed on a surface portion of the elastic material through ATR by using an FT-IR, if an area of an infrared absorption peak at around a wave number of 1650 cm−1 in an infrared absorption spectrum obtained through the measurement is defined as As and an area of an infrared absorption peak at around a wave number of 1470 cm−1 in the infrared absorption spectrum is defined as Bs, Ss=(As/Bs)×100≤6 is satisfied.
A medical rubber product formed from an elastic material and sterilized by being irradiated with gamma ray or electron ray (beta ray), wherein, upon measurement being performed on a surface portion of the elastic material through attenuated total reflection (ATR) by using a Fourier transform infrared spectrophotometer (FT-IR), under a condition that an area of an infrared absorption peak at around a wave number of 1650 cm−1 in an infrared absorption spectrum obtained through the measurement is defined as As and an area of an infrared absorption peak at around a wave number of 1470 cm−1 in the infrared absorption spectrum is defined as Bs, Ss=(As/Bs)×100≤6 is satisfied.
Dependencies are inferred from the claim text.