Abstract: Dilator includes a hollow shaft having a tapered portion, in which an outer diameter of a distal end is smaller than a outer diameter of a proximal end, and a main body portion which has a distal end located at the proximal end of the tapered portion, extends toward a proximal end side, and has a constant outer diameter. A spirally-arranged protruding portion which is configured of a coil body formed by winding a wire is provided on an outer peripheral surface of the tapered portion and the main body portion. The spirally-arranged protruding portion has gaps between portions adjacent to each other along a longitudinal direction of the hollow shaft. The spirally-arranged protruding portion is not joined to the tapered portion, but is joined to the main body portion at a joint part.
Abstract: A catheter having a shaft including a first lumen that communicates from the proximal end to the distal end of the shaft, and a second lumen that is positioned on the outer periphery side of the first lumen, communicates from the proximal end side to the distal end side of the shaft, and has a smaller opening area than the opening area of the first lumen in a transverse section of the shaft. The dimension in the first direction in the distal end portion of the shaft where the first lumen and the second lumen are aligned is less than or equal to the dimension in the first direction in the proximal end portion that is closer to the proximal end side than the distal end portion of the shaft.
Abstract: A medical apparatus includes a biomagnetic field information acquisition portion that acquires biomagnetic field information obtained from a biomagnetic field generated by an organ including a lesion in a living body, a lesion position information detection portion that detects position information on the lesion in the organ from the acquired biomagnetic field information, an image information acquisition portion that acquires image information including an MRI image or CT image of the organ, and a synthetic image generation portion that uses the image information and the position information on the lesion to generate a synthetic image including a three-dimensional or two-dimensional organ model image of the organ and an image representing a position of the lesion.
Abstract: A guide wire of the present disclosure includes a core shaft having a distal end portion decreasing in diameter, 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 diameter portion, a large diameter portion, and a tapered portion between the small diameter portion and the large diameter 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 diameter portion, a second bending rigidity FR2 of the small diameter 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).
Abstract: A guide wire includes a core wire, a first resin layer that coats a part of the core wire, a coil body wound around another part of the core wire and an outer side of the first resin layer, and a second resin layer that coats the coil body, in which a part of the coil body is embedded in the first resin layer and the second resin layer.
Abstract: A system for operating an ultrasound probe that is provided with sensor operation portions for operating the ultrasound probe that acquires ultrasound echo images of a blood vessel, and a control portion that controls operations of the sensor operation portions. The control portion may switch the arrangement of the ultrasound probe using the sensor operation portions between a first arrangement for acquiring an image of a cross section in the transverse direction of the blood vessel and a second arrangement for acquiring an image of a cross section in the longitudinal direction of the blood vessel.
Abstract: A system for detecting a position of a long medical device includes a model acquisition portion that acquires a blood vessel model, a correspondence detection portion 1 that detects a position of a long medical device inserted into a blood vessel and detects a correspondence between the blood vessel model and the position of the long medical device, and a display portion that displays the position of the long medical device in association with the blood vessel model on the basis of a detection result of the correspondence detection portion.
Abstract: A catheter includes a catheter shaft, an operating portion coupled to a proximal end portion of the catheter shaft, and at least one operating wire. A distal end portion of each operating wire is fixed to a distal end portion of the catheter shaft, and a proximal end portion of each operating wire is fixed to the operating portion or the proximal end portion of the catheter shaft. The operating portion includes a first rotary member. The first rotary member makes relative rotation with respect to the catheter shaft around an axis parallel to an extending direction of the proximal end portion of the catheter shaft to change a tensile force of the operating wire and thus change a degree of bending of the distal end portion of the catheter shaft.
Abstract: A medical liquid injection device including a catheter with a hollow shaft having a lumen formed inside to contain medical liquid, a wire to be inserted into the lumen, and a wire moving device to move the wire forward inside the lumen from a proximal end to a distal end side in accordance with a control signal, thereby ejecting a predetermined amount of the medical liquid from the distal end of the hollow shaft.
Abstract: A medical liquid injection device including a catheter shaft having a first lumen, and a connector being connected to a proximal end portion of the catheter shaft and including a second lumen communicating with the first lumen. The connector is formed with a weak portion extending from an outer peripheral surface of the connector to an inner peripheral surface of the connector and being weaker than another portion of the connector.
June 24, 2022
November 10, 2022
ASAHI INTECC CO., LTD.
Satoshi NAMIMA, Yuta KUBO, Masatomo ISHIKAWA
Abstract: A catheter having a proximal end portion having gaps between axially adjacent portions of an element wire where an inner layer is joined to an outer layer through the gaps; and a distal end portion where the axially adjacent portions of the element wire come into contact with each other, and a cavity is provided between the inner layer and a coil body. The catheter has excellent followability to a guide wire and is capable of efficiently transmitting a pushing force and/or rotational force from an operator to the distal end of the catheter.
Abstract: A rotation transmission structure includes a coil body formed by winding wires, and a reinforcing body for connecting adjacent wires of the coil body. When the wires of the coil body are connected to one another by the reinforcing body, the rigidity of a predetermined region of the rotation transmission structure in the longitudinal direction is lower than the rigidity of another region of the rotation transmission structure.
Abstract: To reinforce a layer that is configured to contain fluororesin while suppressing the thickness of the entire medical tube. A medical tube includes a first resin layer that is configured to contain fluororesin, and a second resin layer that is configured to coat an outer peripheral surface of the first resin layer and containing polyimide resin. The thickness of the second resin layer is larger than 0 ?m but not exceeding 15 ?m.
Abstract: A guide wire includes a main body portion having an elongated outer shape and having a base and a marker alternately presented on an outer surface along an extending direction, and a resin layer having light permeability, covering the outer surface of the main body portion, and including a recessed portion and a protruding portion alternately arranged along the extending direction of the main body portion, wherein in longitudinal cross-section along the extending direction of the main body portion, a width of the marker is wider than a width of the protruding portion.
July 14, 2022
November 3, 2022
Asahi Intecc Co., Ltd.
Tomoki KOSUGI, Naoki NOGUCHI, Kenta GOTO, Yuta NAKANISHI
Abstract: To provide a guide wire including a core shaft having an elongated outer shape, and a coating film on an outer surface of the core shaft, the coating film containing a resin. The coating film includes a marker portion containing a pigment on an outer surface of the coating film and a resin portion not containing the pigment. On the outer surface of the coating film, the marker portion and the resin portion are alternately visible in a stretching direction. Of the coating film, a thickness of a portion where the marker portion is visible on the outer surface and a thickness of a portion where the resin portion is visible on the outer surface are substantially the same, or the thickness of the portion where the marker portion is visible is smaller than the thickness of the portion where the resin portion is visible.
July 19, 2022
November 3, 2022
Asahi Intecc Co., Ltd.
Yuta NAKANISHI, Tomoki KOSUGI, Naoki NOGUCHI, Kenta GOTO
Abstract: A catheter includes a hollow shaft, a multi-thread coil body covering the hollow shaft, and a cover member covering the multi-thread coil body. The multi-thread coil body includes a ring-shaped or substantially hollow cylindrical joint part in which distal ends of a plurality of element wires are joined in a circumferential direction, a coil main body located at a proximal side of the joint part in an axial direction, in which an outer shape of a cross section of each of the plurality of element wires is circular, and a transition part located between the joint part and the coil main body, in which a width of at least one of the plurality of element wires widens toward a distal end of the element wire.
Abstract: A measurement apparatus that includes a static magnetic field application part that applies a static magnetic field in a first direction to a measurement subject, a deflection magnetic field application part that applies a deflection magnetic field in a second direction different, to a portion of the measurement subject via a coil, a plurality of magnetic field detection elements respectively detect a magnitude of a magnetic field on the basis of an electromagnetic wave generated and propagated in a portion of the measurement subject due to an application of the deflection magnetic field, a calculation part that calculates an impedance distribution of at least a portion of a region where the electromagnetic wave is propagated inside the measurement subject, and an image information output part that generates and outputs an image showing information about inside the measurement subject.
Abstract: A medical tool gripper for gripping a long medical tool includes a substantially hollow cylindrical main body and a fixing tool for fixing a medical tool to the main body. The main body has a main body inner space that extends over the entire longitudinal direction of the main body and in which the medical tool can be arranged, and a main body groove that is open on the outer periphery of the main body and communicates with the main body inner space over the entire longitudinal length of the main body. The main body groove includes a distal end portion including the distal end of the main body groove, and a proximal end portion including the proximal end of the main body groove and having an opening at a different position from an opening of the distal end portion in the circumferential direction of the main body.
Abstract: A guide wire includes a core shaft and a coil body wound around at least a portion of the core shaft on a proximal end side. The coil body is joined with the core shaft by a predetermined joint means at a position of a proximal end of the core shaft, and a first position along an axial direction of the guide wire between the proximal end and a distal end of the core shaft. The coil body is joined with the core shaft by welding at an axial specific position being at least one position within a range from the proximal end of the core shaft to the first position along the axial direction of the guide wire.
Abstract: A wire delivery device for delivering a wire includes a rod, a gear, a first roller, and a second roller. The rod has an elongated external shape and a first surface with concave portions and convex portions arranged along a longitudinal direction of the rod, the rod being configured to move in a distal end direction of the wire delivery device. The gear is configured to engage the concave portions and convex portions and rotate in response to movement of the rod in the distal end direction. The first roller and the second roller are configured to sandwich the wire and rotate in response to rotation of the gear to deliver the wire in the distal end direction.