Abstract: A catheter according to an embodiment of the present disclosure includes a mesh member, a first hollow shaft, a front end tip, a guiding film, a second hollow shaft, and a core wire. The mesh member has a tubular shape and is radially expandable and contractable. The guiding film is disposed on the mesh member and has a front end located between a base end of the front end tip and a front end of the first hollow shaft. A thickness of the front end of the guiding film is larger than a thickness of a portion where a thickness of the guiding film is the smallest.
Abstract: A guide wire has a core shaft. The core shaft includes a body portion and a layered portion. The body portion contains a nickel-titanium-based alloy as a main component, the nickel-titanium-based alloy having a superelastic property. The layered portion includes an inner layer formed on a part of an outer peripheral face of the body portion and containing a nickel alloy as a main component, and an outer layer formed on the inner layer and containing a titanium oxide as a main component.
Abstract: A magnetic type azimuth/position measurement device is disclosed, comprising: a plurality of coils driven by circuitry, the circuitry and coils configured to selectively generate a uniform magnetic field and an inclined magnetic field in a three-dimensional space; a uniaxial magnetic field sensor configured to measure a strength of a magnetic field formed by the plurality of coils driven by circuitry; and arithmetic operation circuitry configured to receive signals representative of the strength of the magnetic field from the uniaxial magnetic field sensor and calculate a position and an azimuth of the uniaxial magnetic field sensor in the three-dimensional space.
Abstract: A treatment system includes a magnetic sensor configured to detect a biomagnetic field generated by a living body to be treated, a catheter configured to be inserted into the living body, an image information processor programmed to generate a combined image including a first image expressing a strength of the biomagnetic field and a second image expressing a position of the catheter, by using biomagnetic field information output from the magnetic sensor and position information of the catheter inserted into the living body, and a display configured to display the combined image.
Abstract: An organ simulator that includes an organ model, a vascular model adjacent to the organ model, and a flow path forming portion positioned near an opening at a distal end of the vascular model and forming a diffusive flow path.
Abstract: A heart model includes a deformable body forming a simulated ventricle therein that expand and contract; and a restraint body outside of the simulated ventricle and having a spiral outer shape, the restraint body regulating deformation of the deformable to generate a twist in the deformable body when the simulated ventricle expands.
Abstract: A reentry catheter having a catheter body having a lumen extending axially through a length of the catheter body, a distal port in communication with the lumen, and a flexible distal tip positioned at a distal end of the catheter body. The distal tip can have a first planar surface and a second planar surface that are angled to form a tapered portion in the distal tip. A thickness of the tapered portion in a first direction can decrease along the length of the tapered portion and can be less than a width of the tapered portion in a second direction at every point along the length of the tapered portion such that the tapered portion of the tip is more flexible when bent in the first direction than in the second direction, the second direction being normal to the first direction.
Abstract: A catheter including a mesh member having a tubular shape and being radially expandable and contractable, a first hollow shaft connected to a proximal end of the mesh member, a distal end tip, and a core wire. The first hollow shaft includes a distal end side shaft having a distal end connected to the proximal end of the mesh member and a proximal end side shaft having a distal end connected to a proximal end of the distal end side shaft. An opening is provided at the proximal end of the distal end side shaft in a connection portion between the distal end side shaft and the proximal end side shaft. A sealing member covering an outer periphery of the core wire and allowing the core wire to be slidable thereinside is arranged at the distal end of the proximal end side shaft in the connection portion.
Abstract: A balloon catheter includes an inner shaft with a distal variant portion and a proximal variant portion. A bulged portion is provided at the distal end of a reinforcement member, and the bulged portion is configured to move in an axial direction between the distal variant portion and the proximal variant portion. Thus, the balloon catheter may smoothly pass through a curved blood vessel with improved kink resistance of the reinforcement member.
June 12, 2018
Date of Patent:
July 20, 2021
ASAHI INTECC CO., LTD.
Kazuteru Segi, Takeharu Katsurada, Yuta Kubo
Abstract: A medical multi-lumen tube includes a plurality of inner layer tubes and an outer layer tube covering the plurality of inner layer tubes. The outer layer tube has a first region and a second region placed in the axial direction of the outer layer tube and formed of resins having properties different from each other, and the resin of one of the regions enters the other region, so as to form a wave pattern in a joint part between the first region and the second region.
Abstract: A human body simulation device includes a heart model simulating a heart, a beat portion for causing the heart model to beat, a blood vessel model simulating a blood vessel, a pulsation portion for sending a pulsated fluid into the blood vessel model, and a control portion for changing a beat rate of the beat portion and a pulsation rate of the pulsation portion depending on a prescribed heart rate.
Abstract: A dilator that includes a hollow shaft including a tapered section having a diameter increasing from a distal end toward a proximal end, and a spirally-arranged protruding portion provided on an outer peripheral surface of the hollow shaft and including spirally-arranged protruding sections and gaps between adjacent spirally-arranged protruding sections along an axial direction of the hollow shaft. The spirally-arranged protruding portion includes an apex section having the greatest height from the outer peripheral surface in a transverse cross-section thereof, and a side surface section facing outward and extending from the apex section toward the outer peripheral surface. The side surface section includes an inclined surface inclined substantially linearly toward at least one of the distal and proximal end direction between the outer peripheral surface and the apex section in the transverse cross-section of the spirally-arranged protruding portion.
Abstract: A dilator that includes a shaft and a spirally-arranged protruding portion. The shaft includes a tapered section, a distal end section, and a body section. The spirally-arranged protruding portion includes spirally-arranged protruding sections provided on outer peripheral surfaces of each of the tapered section, the distal end section, and the body section, and gaps between adjacent spirally-arranged protruding sections along an axial direction of the shaft. At least one of a height t of the spirally-arranged protruding portion at a first location gradually decreases toward a distal end side and a height of the spirally-arranged protruding portion at a second location gradually decreases toward a proximal end side.
Abstract: A human body simulation device includes an aorta model that simulates an aorta, and a biological model that simulates a part of a human body and has a partial blood vessel model simulating a part of blood vessels. The aorta model includes a biological model connecting portion that attachably/detachably connects the biological model in a state where an inner cavity of the aorta model and an inner cavity of the partial blood vessel model are in communication with each other, and a fluid feeding portion connecting portion that connects a fluid feeding portion for feeding a fluid into the inner cavities.
March 24, 2021
July 8, 2021
ASAHI INTECC CO., LTD.
Satoshi NAMIMA, Yuta KUBO, Erika ASAHATA
Abstract: Provided is a dilator that can suppress displacement, in a lengthwise axis direction, of a protruding portion that extends in a spiral. The dilator includes a first coil having an outer diameter that increases from a distal end toward a proximal end; and a protruding portion that is provided on the outer periphery of the first coil, and extends along the outer periphery of the first coil in a spiral along a lengthwise axis direction of the first coil. The protruding portion has gaps between adjacent parts of the protruding portion along the lengthwise axis direction. A covering layer is provided that covers at least an outer peripheral surface of the first coil, said outer peripheral surface being located in the gaps. A top portion of the protruding portion is exposed.
Abstract: In an indwelling device including a device body and an engaging part connected to the device body and capable of abutting on a bodily wall, the engaging part can abut on the bodily wall in a state that a region of the engaging part, excluding end parts, is expanded radially outward from an outer peripheral surface of the device body.
Abstract: A catheter having excellent flexibility in order to follow a guidewire, and that is not easily kinked even when the catheter is bent strongly. The catheter includes a catheter shaft having a hollow resin body and a coil body within the hollow resin body. The coil body is formed of a spirally wound wire, which is slidable with respect to the hollow resin body.
Abstract: A ligation device includes a cylindrical inner cylinder having a distal end portion, a slider having a cylindrical shape, attached around the inner cylinder, movable with respect to the inner cylinder along an axial direction of the inner cylinder, and having annular grooves extending along a circumferential direction on an inner peripheral face, and ligation rings attached around the inner cylinder and located in the annular grooves.
Abstract: A catheter includes a first hollow shaft, a tubular mesh member, a distal end tip, a first core wire, and a second core wire. The first core wire extends inside the mesh member and the first hollow shaft. The second hollow shaft slides along an axial direction of the first hollow shaft and is movable between a first position at which the second hollow shaft surrounds an outer periphery of the first hollow shaft with a distal end of the second hollow shaft positioned further on the proximal side than the distal end of the first hollow shaft and a second position at which the second hollow shaft surrounds an outer periphery of the mesh member with the distal end of the second hollow shaft positioned further on a distal side than the distal end of the first hollow shaft.