Abstract: Provided is a curable composition including a urethanization reaction product of: a branched polyolefin diol having a carbon-carbon double bond in a side chain; at least one selected from an isocyanurate product, an adduct product, and a biuret product, of an aliphatic diisocyanate having 6 or more and 10 or less total carbon atoms; and a hydroxy saturated C1 to C4 alkyl (meth)acrylate. Also provided are a method for producing the curable composition, and a specific curable compound included in the curable composition.

Abstract: A cuff-pressure control device includes a pump, an inner pipe connected to the pump, a pressure sensor that measures an internal pressure of the inner pipe, and a control unit that controls a cuff pressure. A cuff is separable from the cuff-pressure control device, and, in a separation state, a first space in communication with the cuff is kept airtight such that the cuff pressure is maintained. The control unit adjusts a pressure in the cuff-pressure control device to a pressure of the first space before the cuff is connected to the cuff-pressure control device in a connection state in which the cuff in the separation state is connected to the cuff-pressure control device and the cuff and the inner pipe are in communication with each other.

Abstract: Object: To provide a seal ring capable of both reducing a friction loss and reducing oil leakage. Solving Means: The seal ring includes an inner circumferential surface, an outer circumferential surface, side surfaces, a plurality of pockets, and recess regions. The outer circumferential surface is opposed to the inner circumferential surface. The side surfaces are orthogonal to the inner circumferential surface and the outer circumferential surface. The plurality of pockets are provided, spaced apart from one another in at least one of the side surfaces. The recess regions are provided in the at least one of the side surfaces and includes a plurality of independent recesses. In this seal ring, it is possible to both reduce the friction loss and reduce the oil leakage due to a function of buffering oil by the recess region.

Abstract: A cuff-pressure control device includes a pump, an inner pipe connected to the pump, a pressure sensor that measures an internal pressure of the inner pipe, and a control unit that controls a cuff pressure. A cuff is separable from the cuff-pressure control device, and, in a separation state, a first space in communication with the cuff is kept airtight such that the cuff pressure is maintained. The control unit adjusts a pressure in the cuff-pressure control device to a pressure of the first space before the cuff is connected to the cuff-pressure control device in a connection state in which the cuff in the separation state is connected to the cuff-pressure control device and the cuff and the inner pipe are in communication with each other.