(Topic) the medical instrument where the part where form we would like to do to attach secondarily consists of the silicone rubber formation item, when heating expedient is used, the stable form attaching wound was not possible. In addition, EOG which is one of the sterilizations which do not use temperature (ethylene oxide) with sterilization influence to the organism of the residual gas felt concern. But without heating form in order to attach then gamma-ray and electronic beam lighting when it does, with gamma-ray lighting the form attaching wound was not possible, being the form attaching wound possible with electronic beam lighting, you discovered the fact that also sterilization combines depending upon condition.(Solution expedient) be able to use the silicone rubber at least, physical properties of the said silicone rubber taking precedence and exceeding the deformation form which designates the form when forming of the aforementioned region as purpose, in the medical instrument which possesses the region which appears, making use of the reform component making become deformed it makes maintain, the electronic beam in this state, obtain the deformation form which it makes purpose between form at the time of electronic beam lighting by next removing the reform component, irradiates when forming and it can.(課題) 2次的に形状付けしたい部分がシリコーンゴム成形品からなる医療器具は、加熱手段を用いた場合安定的な形状付けができなかった。また、高熱を用いない滅菌法の1つであるEOG(エチレンオキサイド)滅菌では残留ガスの生体への影響が懸念されていた。そこで加熱せずに形状付けするためにガンマ線と電子線照射を行ったところ、ガンマ線照射では形状付けができなかったが、電子線照射により形状付けが可能で、条件によっては滅菌も兼ねることを見出した。(解決手段) 少なくともシリコーンゴムが用いられ、該シリコーンゴムの物性が優先して現れる部位を有する医療器具において、矯正部材を用いて前記部位の成形時の形状を目的とする変形形状を越えて変形させて維持させ、この状態で電子線を照射し、次いで矯正部材を除去することによって、成形時と電子線照射時の形状の間の目的とする変形形状を得ることができる。
