Abstract: A medical apparatus includes circuitry configured to: acquire image information of an image of an organ in a living body; acquire biomagnetic field information from a biomagnetic field generated by the organ; a generate, from the image information, an organ model image of the organ two-dimensionally or three-dimensionally expressed; generate an electrocardiographic current image in which an over-time change in a current flowing through each position of the organ, acquired from the biomagnetic field information, is expressed by a change in a color attribute; and generate a composite image in which the organ model image and the electrocardiographic current image are superposed.

Abstract: An elongated medical instrument includes: a base material part; and an outer layer part made of a resin based on a resin suspension that is coated on an outer peripheral surface of the base material part; where a surface of the outer layer part has irregularly disposed recesses formed from cracks generated by drying of the resin suspension, and protrusions formed with an outer peripheral surface formed on an outer peripheral side of the recesses.

Abstract: A medical device, which is formed in an elongated outer shape and has a distal end side configured to be inserted inside a body when in use, includes a magnetized member in which a magnetized portion containing magnetized martensitic stainless steel is formed in a portion of the distal end side.

Abstract: An elongated medical instrument includes a base material part, and an outer layer part made of a resin provided on a surface of the base material part. An outer surface of the outer layer part is a substantially flat surface other than the presence of irregularly disposed recesses or protrusions.

Abstract: A guide wire of the present disclosure includes a core shaft having a distal end portion decreasing in cross-sectional area, a coil body wound to cover the distal end portion, and a distal end fixing portion fixing the core shaft and the coil body to each other. The distal end portion includes a small cross-sectional area portion, a large cross-sectional area portion, and a tapered portion between the small cross-sectional area portion and the large cross-sectional area portion. The core shaft and the coil body are fixed at a portion excluding the tapered portion. A first bending rigidity FR1 of the large cross-sectional area portion, a second bending rigidity FR2 of the small cross-sectional area portion, and a length L of the tapered portion satisfy the following expressions (1) and (2). In the following expressions (1) and (2), the unit of L is mm (millimeter). (FR1/FR2)0.25/L?0.

Abstract: A dilator includes a distal end side coil part, and a proximal end side coil part located at a proximal end side of the distal end side coil part and having a distal end portion connected to a proximal end portion of the distal end side coil part. The distal end side coil part includes a first coil having a wire wound in a first winding direction, and a second coil provided on an outer periphery of the first coil and having a wire wound in a second winding direction that is opposite to the first winding direction. The proximal end side coil part includes a third coil having a wire wound in the second winding direction, and a fourth coil provided on an outer periphery of the third coil and having a wire wound in the first winding direction.

Abstract: A catheter includes a hollow shaft, a linear member provided on an outer periphery of the hollow shaft, and a metallic film that is formed between the outer periphery of the hollow shaft and the linear member and is joined to the outer periphery of the hollow shaft and the linear member. With this configuration, as the hollow shaft, the metallic film, and the linear member are joined together, the torqueability of the catheter may be improved.

Abstract: A guide wire includes a core shaft, a coil body that covers the core shaft, and a distal end side joint part that joins the distal end of the coil body and the distal end of the core shaft. The distal end side joint part has a substantially truncated cone-shaped outer diameter decreasing portion whose outer diameter decreases toward the distal end direction, and a substantially spherical segment-shaped most distal end portion at the distal end of the outer diameter decreasing portion and whose outer diameter decreases towards the distal end direction. Height r1 of the most distal end portion, outer diameter r2 of the bottom surface of the most distal end portion, and height r3 of the outer diameter decreasing portion satisfy the following equations (1) and (2). 0.33 ? < ? r1 ? / ? r2 ? < ? 0.63 2.5 ? < ? r3 ? / ? r2 ? < ? 3.

Abstract: A balloon catheter includes a shaft having a first shaft portion and a second shaft portion located on a proximal side of the first shaft portion, and a balloon covering and joined to the second shaft portion. The first shaft portion is more flexible than the second shaft portion and has a length in an axial direction of 1.5 cm or more.

Abstract: A guide wire includes a hollow shaft having a hole extended longitudinally, and a first core shaft enclosed in a hollow shaft and containing a first resin material. The first core shaft contains a radiopaque material.

Abstract: A blood vessel model having a simulated blood vessel body formed of an elastic material. The simulated blood vessel body has a communication hole that penetrates the vessel wall of the simulated blood vessel body. The communication hole opens when the periphery of the communication hole undergoes elastic deformation in response to the intravascular pressure of the simulated blood vessel body.

Abstract: A light irradiation device including an optical fiber and a light transmissive optical path changing member for changing an optical path of light entering from the optical fiber, disposed on a distal side relative to the optical fiber. The optical path changing member includes a proximal side member disposed on a proximal side of the optical path changing member and a distal side member disposed on a distal side of the optical path changing member. The proximal side member and the distal side member are in contact with each other to form a boundary surface, and the boundary surface is inclined relative to a vertical plane of a central axis of the optical fiber.

Abstract: Provided is a plasma guide wire including a core shaft, a coil, a tip, a coil-core shaft joining region, and first to third insulating resin tubes. The first insulating resin tube is disposed on the outer periphery of the coil, and extends proximally from the tip to beyond the coil-core shaft joining region. The second insulating resin tube is disposed on the outer periphery of the core shaft, is joined to the proximal end of the first insulating resin tube, and extends from the proximal end of the first insulating resin tube to the proximal side of the core shaft. The second insulating resin tube is harder than the first insulating resin tube. The third insulating resin tube is disposed on at least a portion of a region of the inner periphery of the first insulating resin tube, proximal to a location facing the proximal end of the coil.

Abstract: A connection structure includes a multi-thread coil formed by winding first metal element wires formed of a first metal and second metal element wires formed of a second metal arranged between a first metal body including the first metal and a second metal body including the second metal. The first metal body is connected to the first metal element wires of the multi-thread coil, and the second metal body is connected to the second metal element wires of the multi-thread coil. The connection structure imparts improved flexibility to the connection between the first and second metal bodies, and an appropriate connection can be provided even when the first and second metal bodies are made of dissimilar metals.

Abstract: A catheter, including: a hollow shaft having a distal end that includes a first section extending substantially linearly and a second section on a distal end side of the first section. The second section includes a first curved region and a second curved region, less rigid than the first curved region, on the more distal end side than the first curved region. A virtual plane on the axis of the hollow shaft forms a boundary, and spaces on both sides of the virtual plane define a first area and a second area. The first curved region and the distal end of the catheter are in the first area. The second curved portion is in the second area. A distance from the distal end of the catheter to the virtual plane is larger than a distance from the first curved portion to the virtual plane.

Abstract: A medical apparatus including an ultrasonic information acquisition unit that acquires ultrasonic information of inside of a living body obtained from an ultrasonic probe that has an ultrasonic sensor and emits ultrasonic waves inside the living body, a device magnetic field information acquisition unit that acquires device magnetic field information relating to a magnetic field generated from a medical device inserted in a blood vessel inside the living body, an echo image generation unit that generates an ultrasonic echo image of the blood vessel from the ultrasonic information, and a device position image generation unit that generates a device position image indicating the position of the medical device inside the blood vessel, based on the ultrasonic echo image and the device magnetic field information.

Abstract: A catheter includes a hollow shaft and an outer shaft arranged at an outer periphery of the hollow shaft. The hollow shaft includes a reinforcing body having a plurality of slits extending spirally. Proximal ends of the slits are at a same axial position and at equal intervals in a circumferential direction.

Abstract: A catheter includes a tubular inner layer, a reinforcement body disposed around the outer periphery of the inner layer, a protective layer covering the outer periphery of an end of the reinforcement body, and an outer layer covering at least the outer periphery of the protective layer. The protective layer covers the outer periphery of at least one end of reinforcement body, and the end of the reinforcement body covered with the protective layer is buried deeper in a side of the inner layer relative to a portion of the reinforcement body not covered with protective layer. The reinforcement body is prevented from lifting away from the inner layer when the catheter is bent even without increasing the outer diameter of the reinforcement body.

Abstract: A catheter device is configured to include a main body portion that is bendable and is provided on a distal end side, two systems of wire ropes coupled to a distal end portion of the main body portion with a space in a predetermined first direction, and an operating portion that is operable by a user operation and is coupled to a proximal end side of the two systems of the wire ropes with a space in the first direction. The main body portion is bendable in the first direction due to a tension state of the two systems of the wire ropes by bending the operating portion in the first direction.

Abstract: A guide wire includes a shaft body having a specific portion containing a radiopaque material; and a distal helical body formed into a spiral shape, which contains a radiopaque material and has at least a part located on a more distal end side relative to the shaft body. The guide wire includes a first radiopaque portion as a part of the guide wire in a longitudinal direction of the guide wire, which includes at least a part of the distal helical body. The guide wire further includes a second radiopaque portion as another part of the guide wire in the longitudinal direction of the guide wire, which is located on a more proximal end side relative to the first radiopaque portion, includes at least a part of the specific portion of the shaft body, and has a radiopacity different from that of the first radiopaque portion.