The creative medical expansion bed is mainly composed of a bed frame, an extension frame and a snap-on member, the bed frame is used for the patient to lie down, and the expansion frame is assembled, and the extension frame can be moved relative to the bed frame, so that the patient lies The plane can be enlarged, wherein the engaging member has a engaging portion and is movably connected to the bed frame, so that the engaging portion can be moved from the separated position to the engaging position, and the engaging portion is connected to the extending frame, thereby making the extending frame The movement state can be changed from a freely movable state to an inability to move the limit state, whereby the extension frame moves to the engagement position when the plane of the patient is moved according to the patient's body shape and the plane in which the patient lies is increased. The extension frame cannot be moved relative to the bed frame, so that when the patient is lying on the bed frame, the patient can be prevented from falling from the bed frame to the ground because the extension frame is separated from the bed frame.本創作醫療用擴充床主要由床架、擴充架以及卡合件所構成，床架用以供患者躺臥，並活動組裝擴充架，而擴充架能相對於床架進行移動，使得患者躺臥的平面能夠增大，其中，卡合件具有卡合部，並活動連接於床架，使得卡合部能由分離位置移動至卡合位置，讓卡合部連接於擴充架，進而使擴充架能由一能自由移動的移動狀態改變為一無法移動的限位狀態，藉此，擴充架依照患者的體型進行移動而讓患者躺臥的平面增大時，將卡合部移動至卡合位置，讓擴充架無法相對於床架進行移動，進而患者在床架上躺臥翻身時，能避免患者因為擴充架分離於床架而從床架上掉落至地面受傷。
