PROBLEM TO BE SOLVED: To provide a wireless transmission unit for a dental instrument with a built-in camera, such unit being able to wirelessly transmit camera images to various destination apparatuses, increase operability for a dentist or the like during a treatment, and achieve improved visibility of an affected area and promote patient understanding of the details of the treatment.SOLUTION: A wireless transmission unit 51 has a configuration that comprises following: a mounting cylinder 55 having a cylindrical connector section 53 which fits to an outer periphery of a hand piece main section 2 of a camera built-in hand piece 1 that is a dental instrument with a built-in camera, and in which a first end of a connection wiring part is connected to a built-in camera unit 31 and a second end thereof is lead out of the hand piece main section 2 and connects to the cylindrical connector section 53 and image processing wireless transmission means 58 that has a linking connector part 56 for linking with the cylindrical connector section 53, and that is detachably attached at the outer periphery of the hand piece main section 2 by connector linking with the mounting cylinder 55, imports target-location image signals captured by the camera unit 31 and imports such images from the linking connector part 56 through the connection wiring part and cylindrical connector section 53, and that carries out image processing on the imported image signals of the target locations and wirelessly transmits the same to destination apparatuses as target-location image information.COPYRIGHT: (C)2015,JPO&INPIT【課題】カメラ画像を各種の送信先機器へ送信でき治療時における歯科医師等の操作性を高めつつ患部視認性の向上、患者の治療内容の理解促進を図れるカメラ内蔵歯科用インスツルメント用の無線送信用ユニットを提供する。【解決手段】無線送信用ユニット51は、カメラ内蔵ハンドピース1のハンドピース本体部2の外周に嵌装されるとともに、内蔵したカメラユニット31に一端を接続した接続配線部の他端をハンドピース本体部の外に導出して当該他端に接続した筒体コネクタ部53を備える装着筒体55と、筒体コネクタ部に結合する結合コネクタ部56を有し、装着筒体とのコネクタ結合によりハンドピース本体部の外周部において着脱可能に連結されるとともに、撮像した対象部位の画像信号を、接続配線部、筒体コネクタ部を経て結合コネクタ部から取り込み、画像処理して対象部位画像情報として送信先機器に無線送信する画像処理無線送
