Abstract: A guide wire in which a housing of a sensor is easy to be curved and a slit is hard to fracture. The guide wire includes a core wire, a first helical body, a second helical body, a housing attached to the first helical body and the second helical body, and a pressure sensor located in an internal space of the housing. The housing has slits penetrating a peripheral wall and extending in helices. One of the slits has a central portion extending in the helix in an extending direction and an end portion bent with respect to the central portion along a bending direction.

Abstract: An artificial lung device includes: a housing which is formed in a tubular shape including both end portions closed, includes a blood inflow port and a blood outflow port, and is arranged such that a center axis of the housing is directed in a lateral direction; a hollow fiber body (gas exchanger) which is arranged in the housing and performs gas exchange with respect to blood while the blood flows from the blood inflow port to the blood outflow port; and a straightening frame (gas guide portion) by which a gas having flowed through the gas exchanger by the flow of the blood is guided to the gas exchanger again in the housing.

Abstract: A connector which is detachably connected to a cylindrical section is prevented from unintentionally disconnecting and breaking. The connector has inner and outer cylinder members. The inner cylinder member has an engagement plate protruding from the inner peripheral surface of an inner cylinder body and engaging with a recess formed in the outer peripheral surface of the cylindrical section, and also has slits arranged radially and extending from the engagement plate to a part of the inner cylinder body. The engagement between the recess and the engagement plate restricts the axial movement of the inner cylinder member relative to the cylindrical section. When the outer cylinder member is mounted on the inner cylinder member, the inner peripheral surface of the outer cylinder member is in contact with the outer peripheral surface of the inner cylinder member, and the displacement of the engagement plate in the diameter expansion direction is restricted.

Abstract: A connector which is detachably connected to a cylindrical section is prevented from unintentionally disconnecting and breaking. The connector has inner and outer cylinder members. The inner cylinder member has an engagement plate protruding from the inner peripheral surface of an inner cylinder body and engaging with a recess formed in the outer peripheral surface of the cylindrical section, and also has slits arranged radially and extending from the engagement plate to a part of the inner cylinder body. The engagement between the recess and the engagement plate restricts the axial movement of the inner cylinder member relative to the cylindrical section. When the outer cylinder member is mounted on the inner cylinder member, the inner peripheral surface of the outer cylinder member is in contact with the outer peripheral surface of the inner cylinder member, and the displacement of the engagement plate in the diameter expansion direction is restricted.

Abstract: A plurality of heat transfer pipes have a circumferential portion arranged at a short distance from an inner surface of a heat exchanger case while they are bundled to form a pipe group and a first chord which retracts toward a center in a direction of cylinder diameter from an arc formed by the circumferential portion. The plurality of bundled heat transfer pipes are loaded in the exchange case such that the first chord and an inner surface of the heat exchange case on a side where a heat exchange medium inlet port is attached are opposed to each other. By making a flow of a heat exchange medium to each heat transfer pipe uniform, a heat exchanger capable of obtaining high heat exchange performance is obtained.

Abstract: A heat exchanger includes a case, a bottom member and a plurality of heat transfer pipes (a pipe group) loaded in the heat exchanger case, in which blood flows from one end through the bottom member. The bottom member has an annular wall, a bottom surface, and a blood inlet port. The bottom surface is opposed to one end of the heat transfer pipe. The bottom surface includes a groove portion and a raised bottom portion provided on each of opposing end sides of the groove portion. The raised bottom portion is inclined such that a distance between the raised bottom portion on a side where the blood inlet port is provided and one end of the heat transfer pipe is smaller than a distance between the raised bottom portion opposite to the side where the blood inlet port is provided and one end of the heat transfer pipe.

Abstract: A heat exchanger includes a case, a bottom member and a plurality of heat transfer pipes (a pipe group) loaded in the heat exchanger case, in which blood flows from one end through the bottom member. The bottom member has an annular wall, a bottom surface, and a blood inlet port. The bottom surface is opposed to one end of the heat transfer pipe. The bottom surface includes a groove portion and a raised bottom portion provided on each of opposing end sides of the groove portion. The raised bottom portion is inclined such that a distance between the raised bottom portion on a side where the blood inlet port is provided and one end of the heat transfer pipe is smaller than a distance between the raised bottom portion opposite to the side where the blood inlet port is provided and one end of the heat transfer pipe.

Abstract: A plurality of heat transfer pipes have a circumferential portion arranged at a short distance from an inner surface of a heat exchanger case while they are bundled to form a pipe group and a first bowstring-shaped portion which retracts toward a center in a direction of cylinder diameter from an arc formed by the circumferential portion. The plurality of bundled heat transfer pipes are loaded in the exchange case such that the first bowstring-shaped portion and an inner surface of the heat exchange case on a side where a heat exchange medium inlet port is attached are opposed to each other. By making a flow of a heat exchange medium to each heat transfer pipe uniform, a heat exchanger capable of obtaining high heat exchange performance is obtained.