PROBLEM TO BE SOLVED: To provide a medical spray device having safety such that a beak tube portion does not suddenly pop out from a spray main body during treatment. SOLUTION: An engagement/disengagement cylinder 80 is fitted into a cylindrical housing 61 so as to be able to rotate forward and backward, and the engagement/disengagement cylinder 80 is advanced when the beak tube 18 is fitted into the cylinder housing 61. And the beak tube locking means for holding the beak tube 18 in position and the engaging/disengaging cylinder 80 is retracted, the beak tube locking means is released to project the beak tube 18 from the cylindrical housing 61. In order to allow the engaging/disengaging cylinder body 80 to retreat to the end edge portion of the engaging/disengaging cylinder body 80 having a tube pushing-out means and facing the locking projection 81 provided on the outer side surface of the beak tube 18. And a lock engaging surface 83 for rotating and holding the forward position of the engagement/disengagement tubular body 80. [Selection diagram] Figure 1【課題】医用スプレー装置の処置中に嘴管部分が突然スプレー本体から飛び出すことのないような安全性を備えたものを提供すること。【解決手段】円筒ハウジング６１に、前進と後退と回動可能に係脱筒体８０を嵌合し、前記嘴管１８の前記円筒ハウジング６１への嵌合時に前記係脱筒体８０を前進させて前記嘴管１８を位置保持する嘴管係止手段と、前記係脱筒体８０を後退したとき、前記嘴管係止手段を解除して前記嘴管１８を前記円筒ハウジング６１から突出させる嘴管押し出し手段を有し、前記嘴管１８の外側面に設けたロック用突起８１に臨ませて前記係脱筒体８０の端縁部に、前記係脱筒体８０の後退を可能にするためのロック解除凹部８２を形成するとともに、前記係脱筒体８０の前進位置を回動して保持するためのロック係止面８３とを形成する。【選択図】図１
