Abstract: A catheter that includes a shaft having a lumen communicating from the distal end to the proximal end. The shaft has a plurality of radiopaque markers at different positions in the axial direction of the shaft. The markers include a first marker that is the distal-most marker, and a second marker located adjacent to the first marker on the proximal side. The thickness of the first marker along the radial direction of the shaft is different from the thickness of the second marker along the radial direction.

Abstract: An indwelling assembly includes an inner needle having a sharp needlepoint, an inner needle hub fixed to the inner needle, a hollow elongated outer member in which the inner needle is positioned and movable in a distal direction relative to the inner needle after puncturing the blood vessel to position the elongated outer member at a desired position in the blood vessel, an outer member hub fixed to hollow elongated outer member, a projection removably connected to the outer member hub and configured to be engaged by a finger of the user to apply a force to the projection causing the outer member hub and the hollow elongated outer member to move together with the projection in the distal direction relative to the inner needle and the inner needle hub, and an elongated movable member that is movable relative to the hollow elongated outer member and the outer member hub.

Abstract: A catheter for removing an object in a body lumen includes a rotatable drive shaft including a spiral portion having a spiral shape near a distal end of the drive shaft, an outer tube surrounding the drive shaft, a cutting member connected to the distal end of the drive shaft to be rotated by the drive shaft with respect to a rotation axis and by which the object is cut, a guide wire tube attached to a distal portion of the outer tube, extending substantially straight along a center spiral axis of the spiral portion, and having a first guide wire lumen, and a distal tip attached to a distal end of the guide wire tube and having a second guide wire lumen extending parallel to the rotation axis and communicating with the first guide wire lumen.

Abstract: Provided are a connection state determination method and a connection state determination system that enable provision of work assistance to a medical worker to reduce workloads and human mistakes. The connection state determination method is a connection state determination method for determining a connection state between a plurality of medical devices each including a connection portion having a unique identifier, the connection state determination method including: detecting the connection portions of the respective medical devices; determining whether the identifiers of the detected connection portions are in a predetermined state; and determining the connection state between the plurality of medical devices, in accordance with whether the identifiers are in the predetermined state.

Abstract: A medical device that removes an object in a body lumen, includes a rotatable drive shaft, a cutter attached to a distal portion of the drive shaft and by which the object is cut, an outer tube surrounding the drive shaft, a guide wire tube attached to a distal portion of the outer tube and having a guide wire lumen therein, a metal member attached to the guide wire tube and including a first portion that extends along the guide wire tube and includes a first recess, and a distal tip made of a resin, disposed at a distal portion of the guide wire tube, and having a distal lumen that communicates with the guide wire lumen. The distal tip engages with the first recess of the metal member.

Abstract: A catheter that includes a shaft in which a shaft lumen communicating from a distal end to a proximal end; a hub attached to the proximal end of the shaft; and a reinforcing tube surrounding the shaft, includes an inner peripheral surface in contact with an outer peripheral surface of the shaft and an outer peripheral surface in contact with an inner peripheral surface of the hub, and protrudes to a distal end side with respect to a distal end of the hub, in which at least a part of an inner peripheral surface of the reinforcing tube in the hub is welded to at least a part of the outer peripheral surface of the shaft, and at least a part of an outer peripheral surface of the reinforcing tube in the hub is welded to at least a part of the inner peripheral surface of the hub.

Abstract: A holding tool is configured to be used together with a container and a lid for the container to sandwich the container and the lid. The holding tool includes a base on which the container is placed, and a cover configured to cover the lid. The base and the cover each have an opening at a central portion and are configured to engage with each other to press and sandwich the container and the lid upward and downward.

Abstract: Provided is a medical device capable of easily changing a position of the device inside a biological lumen and effectively removing a cut object. The medical device for removing the object in the biological lumen has a drive shaft, a cutting portion, a first housing that accommodates the drive shaft to be rotatable, a second housing that is rotatable with respect to the first housing, and a support portion that supports the first housing and the second housing. The second housing and the support portion relatively move along an axis to restrict relative rotation of the first housing and the second housing. The support portion supports the second housing to be rotatable around the axis.

Abstract: A detection device according to the present disclosure includes: an irradiation unit configured to emit an infrared ray toward an infusion tube; an imaging unit configured to generate a captured image obtained by imaging the infusion tube irradiated with the infrared ray by the irradiation unit; and a control unit configured to detect blockage of the infusion tube and air bubbles in the infusion tube based on a light intensity distribution in the captured image.

Abstract: There is provided an injection needle that perpendicularly punctures a target site such as an intramucosal or intradermal site and injects a medicinal solution into the target site. The injection needle includes: a bevel-needle-shaped needle body having a hollow portion through which the medicinal solution is passable; a needle body blade surface which is formed at a distal portion of the needle body and enables a puncture of the target site; and a passage hole which is formed at the distal portion and through which the medicinal solution passes. The passage hole is biased toward a side of a distal end of the needle body blade surface. A length of the needle body in an axial direction from an edge portion of an opening edge of the passage hole to the distal end of the needle body blade surface is 0.1 mm or longer and shorter than 2.0 mm.

Abstract: An insulating tab attached to an electronic device driven by a battery includes a first insulating layer, a first wiring that extends in a first direction along the first insulating layer, the first wiring including a first electrode on one end thereof and a second electrode on the other end thereof, and a second wiring that extends in the first direction along the first insulating layer, the second wiring including a third electrode on one end thereof and a fourth electrode on the other end thereof. The first and third electrodes are disposed on opposite sides of the first insulating layer at a first location of the first insulating layer along the first direction.

Abstract: A medical device is disclosed for cutting an object in a body lumen. The medical device includes a rotation structure having a cutting portion and an outer surface of the cutting portion including a notch, and wherein a width of at least a proximal portion of the notch increases toward a proximal end of the notch; and a drive shaft connected to a motor and configured to be connected to the rotation structure to drive a rotation of the rotation structure.

Abstract: A treatment method and medical device are disclosed for cutting a substance inside a body lumen. The medical device includes a drive shaft that is rotatable; a cutting unit configured to be rotatably connected to a distal side of the drive shaft; a filter device configured to be inserted in a contracted state, the filter device having an elongated shaft, which interlocks with a filter portion of the filter device; a distal tube, the distal tube being on a distal side of the cutting unit and configured to receive the elongated shaft of the filter device; and a housing on a proximal portion of the drive shaft, the housing including a first drive gear connected to the drive shaft, a second drive gear connected to a motor and meshing with the first drive gear, and a first partition wall arranged between the motor and the second drive gear.

Abstract: An object of the present invention is to provide further assistance in addition to assistance by tactile force transmission. An information presentation system includes a master device to which an operation by an operator is input and a slave device that operates in accordance with the operation input to the master device. Furthermore, the information presentation system includes a tactile force transmission unit, a calculation unit, and a presentation unit. The tactile force transmission unit controls tactile force transmission in the master device and the slave device. The calculation unit calculates physical characteristics of a substance in contact with the slave device on the basis of an external force input from the environment to the slave device while the slave device maintains a predetermined motion state. The presentation unit presents the physical characteristics of the substance calculated by the calculation unit.

Abstract: A multi-tubing pinch valve assembly including a receiving space defined between a pinch protrusion and tubing contact body. The multi-tubing pinch valve assembly is moveable between a retracted state and an extended state. In the extended state, multiple tubes disposed in the receiving space are pinched, restricting flow therethrough. In the retracted state, multiple tubes are capable of being loaded into and/or out of the receiving space.

Abstract: A biological component separation device includes a device main body which is formed of a soft material in a sheet-like shape and in which a filter accommodating unit is provided, a filter member, an introduction port member, and a lead-out port member. An introduction line and a lead-out line are provided in the device main body. In a state in which the device main body is suspended by an introduction tube, a filter accommodating unit inlet where the filter accommodating unit and the introduction line are connected is positioned lower than a filter accommodating unit outlet where the filter accommodating unit and the lead-out line are connected.

Abstract: A diagnostic method, a diagnostic system, and a control method of a diagnostic system that can detect specific behavior of an elongated body easily and with high accuracy are provided. The diagnostic method is a diagnostic method for diagnosing the behavior of a guiding catheter having a distal end and a proximal end in a biological lumen. The diagnostic method includes inserting the guiding catheter into the biological lumen from the distal end and detecting energy that has passed through a body after irradiating the inside of the body with the energy. The diagnostic method also includes identifying the position of the guiding catheter in the body by the detected energy and comparing the identified position of the guiding catheter with an expected position and detecting specific behavior of the guiding catheter from an amount of deviation of the position of the guiding catheter with respect to the expected position.

Abstract: A procedure simulator for training a procedure using a balloon catheter includes a first flow path simulating a vena cava of a human body; and a second flow path simulating a second venous system of the human body independent of the vena cava. The first flow path and the second flow path are connected via a cavity simulating a lesion site of the human body, a shunt portion, and a plurality of simulated side branches.

Abstract: A catheter system configured to be inserted into a lumen of a living body includes: a flexible outer tube; an inner tube disposed in an inner cavity of the outer tube; a balloon having a tubular shape that connects a distal portion of the outer tube and a distal portion of the inner tube to each other, the balloon being configured to inflate radially inward with respect to the outer tube to allow insertion of a rod-like member through the inner tube, wherein the balloon has an outer peripheral portion that touches inner periphery of the lumen when the balloon protrudes in the distal direction from the distal end of the outer tube; and a removing unit, which is (i) a protrusion or recess formed at the outer peripheral portion of the balloon, or (ii) a part of the rod-like member inserted into the balloon.

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. In an initial state before the catheter is advanced with respect to the inner needle, a distal-most one of the one or more side holes is in a distal portion of the catheter, and the contact support portion is proximal of a proximal-most one of the one or more side holes.