PROBLEM TO BE SOLVED: To provide a function-supplementing integrated circuit, an integrated circuit system and a medical instrument using the same of which cost reduction to be achieved.SOLUTION: The integrated circuit 110 is used in at least one of a plurality of medical instruments 10 and supplements some of the functions of a common processor 100 which is used by respective the plurality of medical instruments 10. The integrated circuit includes processor monitors 111, 112, 114 which stop the supplemented functions and move the medical instruments into a safe state when a problem observation signal indicating a processor problem is received from the processor, and a problem detection signal transmitter 118 which transmits a problem detection signal to the processor so that the processor detects problems in the integrated circuit.COPYRIGHT: (C)2012,JPO&INPIT【課題】低コスト化が実現可能な機能補完集積回路、集積回路システムおよびこれらを使用した医療機器を提供する。【解決手段】複数の医療機器10のうち少なくとも一つに使用され、複数の医療機器10にそれぞれ使用される共通のプロセッサ100の一部の機能を補完する集積回路110であって、プロセッサからプロセッサの異常を示す異常監視信号を受信したとき補完する前記一部の機能を停止し医療機器を安全側に制御するプロセッサ監視部111、112、114と、集積回路の異常を検知させるための異常検知用信号をプロセッサに送信する異常検知用信号送信部118と、を有する。【選択図】図1
