A blood vessel sensing laser light source (31) for irradiating illumination light for detecting blood vessels, a light detector (33) for detecting return light of the illumination light from the subject, detection results of the light detector (33) An optical property processing circuit (41) for calculating at least one of scattering information of blood cells in a blood vessel and absorption information by blood in blood vessels, based on the calculation result of the optical characteristic processing circuit (41) A blood vessel characteristic determining circuit (42) for determining, and a guide laser light source (32) for notifying based on the characteristics of blood vessels determined by the blood vessel characteristic determining circuit (42).血管を検出するための照明光を照射する血管センシング用レーザ光源(31)と、被検体からの照明光の戻り光を検出する光検出器(33)と、光検出器(33)の検出結果に基づき、血管中の血球の散乱情報と血管中の血液による吸収情報との少なくとも一方を算出する光学特性処理回路(41)と、光学特性処理回路(41)の算出結果に基づき血管の特徴を判定する血管特徴判定回路(42)と、血管特徴判定回路(42)により判定された血管の特徴に基づいて報知を行うガイド用レーザ光源(32)と、を有する医療装置。
