Abstract: Provided is an instrument holder that allows an instrument to be smoothly, safely, and hygienically handled by holding the instrument in a standing posture when in use and by holding the instrument in a posture not allowing the instrument to easily contact a practitioner when not in use. A holder portion 15 of an instrument holder 12 has a pair of supporting body portions 16, a rotational body portion 23 that is supported by the supporting body portions 16 and that is rotatable, and a holder body portion 31 that is attached to the rotational body portion 23. The holder portion 15 alternately changes between a rearwardly tilting holding state and a forwardly tilting waiting state due to rotation of the rotational body portion 23.

Abstract: An instrument hose support device includes a rod that supports an instrument hose at a position higher than an instrument that is held by a holder, a pulley support portion that is supported by a distal end of the rod, a pulley that is supported by the pulley support portion and over which the instrument hose is looped. The distal end has a groove in which a taper is formed. A first member of the pulley support portion has a shaft protrusion, and a gap is formed between the shaft protrusion and the groove. The gap serves as the range of motion of the pulley support portion, and the pulley support portion follows the movement of the instrument hose and, relative to the rod, swings freely toward the front and the back and toward the sides and rotates freely with a movable axis (X) as an axis.

Abstract: A moving unit includes a housing, a rotary unit to which a rod part is attached, a spring that generates a torque when the rod part is tilted down or tilted up about a rotation axis on the side on which a base portion of the rod part is located, and a torque adjustment unit that is capable of adjusting a torque by deforming the spring. The torque adjustment unit includes a spring deforming portion that deforms the spring in a direction in which the spring is wound up and a spring fixing portion that keeps a torque constant by coming into contact with the spring deforming portion and fixing the spring deforming portion in place.

Abstract: An instrument hose support device includes a rod that supports an instrument hose at a position higher than an instrument that is held by a holder, a pulley support portion that is supported by a distal end of the rod, a pulley that is supported by the pulley support portion and over which the instrument hose is looped. The distal end has a groove in which a taper is formed. A first member of the pulley support portion has a shaft protrusion, and a gap is formed between the shaft protrusion and the groove. The gap serves as the range of motion of the pulley support portion, and the pulley support portion follows the movement of the instrument hose and, relative to the rod, swings freely toward the front and the back and toward the sides and rotates freely with a movable axis (X) as an axis.