Abstract: An indwelling catheter configured to be indwelled in a living body lumen includes: a shaft including a lumen. An outer diameter of the shaft is 2.5 mm or less. An initial elasticity of the indwelling catheter in warm water at 37° C. is 0.012 N/mm to 0.13 N/mm. A shape restoring rate of the indwelling catheter in warm water at 37° C. is 73% or more. A sliding resistance of the indwelling catheter in physiological saline at 23° C. is 0.025 N or less.

Abstract: An insertion device is an insertion device configured to insert a medical device into a living body, including a needle portion to which at least a portion of the medical device is adhered and being inserted into the living body together with the adhered medical device; and a movable portion configured to be movable relatively to the needle portion in a direction of insertion of the needle portion, wherein the movable portion moves relatively to the needle portion in the direction of insertion to cut an adhered region between the medical device and the needle portion and separate the medical device and the needle portion.

Abstract: A procedure simulator is provided, which includes a first storage tank configured to store a liquid imitating blood; a tissue model including a plurality of bifurcated flow paths being bifurcated downstream via a plurality of bifurcated portions; a pump configured to supply the liquid to the tissue model; a second storage tank configured to store the liquid to be flowed out from the plurality of bifurcated flow paths; a plurality of pipes configured to connect an outlet of a bifurcated flow path to the second storage tank; a plurality of switching valves configured to selectively causing the bifurcated flow path to communicate with a drain flow path from which the liquid is discharged below the tissue model; and a filter member between the switching valve and the outlet of the bifurcated flow path of the plurality of bifurcated flow paths.

Abstract: A biological component separation device (10) includes a device main body (12) which is formed of a soft material in a sheet-like shape and in which a filter accommodating unit (24) is provided, a filter member (16), an introduction port member (14a), and a lead-out port member (14b). An introduction line (26) and a lead-out line (28) are provided in the device main body (12). In a state in which the device main body (12) is suspended by an introduction tube (100), a filter accommodating unit inlet (30) where the filter accommodating unit (24) and the introduction line (26) are connected is positioned lower than a filter accommodating unit outlet (32) where the filter accommodating unit (24) and the lead-out line (28) are connected.

Abstract: A medical device includes: a base material; and a coating on a surface of the base material. The coating includes a network structure including a thread portion and a network portion. The thread portion includes a combination of a silicone and a compound including a constituent unit of polymethoxyethyl acrylate (PMEA). The network portion includes a surface of the base material that is exposed from the thread portion.

Abstract: A diagnosis support device includes a control unit that correlates a plurality of pixels included in a two-dimensional image with two or more classes including a biological tissue class, the two-dimensional image being generated by using a signal of a reflected wave of ultrasound transmitted inside a biological tissue through which blood passes and the two-dimensional image including the biological tissue, generates a three-dimensional image of the biological tissue from a pixel group correlated with the biological tissue class, and performs control of displaying the generated three-dimensional image of the biological tissue.

Abstract: A catheter assembly is disclosed, which includes a catheter; a catheter hub fixed to a base end portion of the catheter; an inner needle having a needlepoint, inserted into the catheter; a needle hub coupled to the inner needle; a needle support portion configured to support the inner needle through the catheter on a leading end side beyond the catheter hub, the needle support portion having a pair of support arms openable and closeable in a different direction to an axis of the inner needle; a restraining portion capable of restraining the pair of support arms in a closed state and releasing a restraint of the pair of support arms; and wherein the restraining portion is movable with respect to the pair of support arms by a movement of the catheter hub relative to the inner needle, which releases the restraint with respect to the pair of support arms.

Abstract: A medical device is disclosed which can suppress torsion of a wire in a circumferential direction in an expansion body formed using the wire. The medical device includes an elongated shaft portion, and an expansion body disposed in a distal portion of the shaft portion, the expansion body configured to expand and contract in a radial direction. The expansion body has wire portions in which a distal portion and a proximal portion are linked with the shaft portion, and a holding portion formed using at least one of the wire portions, and holding a biological tissue. At least one of a proximal side and a distal side of the holding portion has an opening portion formed using a wire portion or formed using a plurality of the wire portions. When the expansion body expands, the wire portion forming the holding portion faces the opening portion.

Abstract: This drug solution delivery apparatus includes a pump main body, a cartridge main body having a plunger operation unit, and a controller for controlling a drive unit. The plunger operation unit has a slide nut and a rib for restricting movement of the slide nut. The drug solution delivery apparatus further includes an attachment detection sensor for detecting contact of the slide nut with the rib. The controller causes the drive unit to drive in reverse, and determines whether the cartridge main body is new or previously used on the basis of a detection signal of the attachment detection sensor.

Abstract: Provided is a method for positioning a medical device for cutting an object in a blood vessel, the medical device including: a drive shaft that is rotatable; a cutter disposed on the distal side with respect to the drive shaft; a drive unit that rotates the drive shaft; and an outer tube shaft that rotatably accommodates the drive shaft.

Abstract: A medical device includes an elongated drive shaft that rotates around a central axis, and an elongated outer tubular shaft disposed outside the drive shaft, in which an outer surface of a distal end of the drive shaft is covered with a distal end covering portion made of resin. The drive shaft is a tubular body in which a plurality of wires or wire rods is arranged and spirally coupled around the axis, and at least a part of the distal end covering portion enters an inside of the drive shaft from between the wire rods.

Abstract: Provided is a medical device that removes an object in a body lumen, the medical device including: a rotatable drive shaft; a cutter that is rotationally driven by the drive shaft and is able to cut the object; an outer tube shaft that rotatably accommodates the drive shaft; and a loosely wound conveyance coil disposed to wrap around the outer periphery of the drive shaft. The conveyance coil is fixed to the drive shaft only at a distal end section of the conveyance coil.

Abstract: A medical device including a long shaft, the shaft including a distal end tube made of metal, the distal end tube provided with a distal end side rough surface portion having an uneven shape provided on an outer surface of a distal end, a proximal end side rough surface portion having an uneven shape provided on an outer surface of a proximal end, and an intermediate portion as a region between the distal end side rough surface portion and the proximal end side rough surface portion including a smooth outer surface, the distal end tube including an outer surface covered with a covering material made of resin, and the covering material being in close contact with the distal end side rough surface portion and the proximal end side rough surface portion.

Abstract: A catheter assembly includes: a catheter including a circumferential wall and a distal opening; an inner needle inserted through the catheter, the inner needle having a sharp needle tip at a distal end of the inner needle; and a deflection suppression mechanism that supports the inner needle via the catheter to suppress deflection of the inner needle, the deflection suppression mechanism including a contact support portion that is configured to support the catheter when the catheter is advanced with respect to the inner needle. The circumferential wall of the catheter includes one or more side holes configured to allow passage of a liquid between an inside and an outside of the catheter. In an initial state before the catheter is advanced with respect to the inner needle, the contact support portion is located proximal of a distal-most one of the one or more side holes.

Abstract: A flow path device of a biological component bag system is equipped with a device main body. The device main body includes a first sheet and a second sheet, and flow paths are formed between the first sheet and the second sheet. The flow paths include a first flow path, a second flow path, a filter accommodating chamber, and a third flow path. In the device main body, flow path sealed portions that join the first sheet and the second sheet to each other in a liquid-tight manner are disposed along the flow paths.

Abstract: A catheter balloon includes a first layer and a second layer disposed adjacent to each other in a thickness direction of the balloon, the first layer and the second layer are configured by different materials, and a rupture strength of the first layer and a rupture strength of the second layer are the same.

Abstract: A catheter assembly includes: a catheter including a main lumen and one or more sub lumens provided separately from the main lumen; and an inner needle extending through the main lumen; and a deflection suppression mechanism configured to suppress deflection of the inner needle. The one or more sub lumens respectively communicate with one or more sub openings formed in the catheter. The catheter is configured to advance with respect to the inner needle. The deflection suppression mechanism comprises a contact support portion that contacts the catheter when the catheter advances with respect to the inner needle. The contact support portion is configured to contact the catheter at (i) a location proximal of a distal-most one of the one or more sub openings, and/or (ii) a location proximal of a step portion generated in the catheter as the one or more sub lumens are formed.

Abstract: A medical device capable of improving handling properties and maintaining excellent insulation properties of conductive wires for supplying electricity to electrodes for performing treatment includes: an elongated shaft part having a guide wire lumen formed therein, the guide wire lumen being open at a distal part; a plurality of electrodes which are disposed on the distal side of the shaft part, extend in the longitudinal direction of the shaft part, and are deformable in the radial direction of the shaft part; and a plurality of conductive wires which extend from the proximal side of the shaft part to the distal side thereof and transfer electricity to an electrode layer. The conductive wires extend inside the electrodes and outside the guide wire lumen, and are electrically connected to the electrodes at the distal side of the electrodes.

Abstract: A puncture device includes: a housing having a contact surface configured to contact skin of a living body; an abutting member having an abutting surface configured to contact the skin, the abutting member being movably disposed in the housing such that the abutting surface is protrudable from the contact surface; and a needle member that includes a puncture needle and is movable relative to the abutting member, the puncture needle being protrudable from the abutting surface toward the skin. In a state in which the housing has contact with the skin, when a relative position between the housing and a portion of the skin facing the abutting surface changes, the abutting member relatively moves with respect to the housing so as to maintain the contact between the abutting surface and the skin.