JAPAN LIFELINE CO., LTD.

A catheter includes a shaft inserted into a body and a plurality of sets of splines 3 , each set being composed of two splines connected to a distal end side of the shaft. The two splines 3 constituting a set of splines 3 are arranged so as to sandwich at least one spline 3 belonging to another set. The plurality of sets of splines 3 are each constrained in their movements relative to each other by a single constraining member.

A medical device is configured such that a distal end of an operation wire is securely fixed to a distal end of a shaft, enabling smooth distal end deflection operation. The medical device includes: a shaft that includes a distal end flexible portion and in which working lumens and wire lumens are formed; a distal end tip disposed on a distal end side of the shaft and in which distal end working lumens in communication with the working lumens are formed; an intermediate member disposed between the shaft and the distal end tip and including a main through-hole that is formed to secure communication paths with the working lumens and the distal end working lumens and surround the communication paths, and sub-through-holes that are formed to correspond to the positions in which the wire lumens are formed.

A power supply device includes: a power source unit electrically connected to a catheter including a plurality of electrodes, and configured to apply voltage to the plurality of electrodes; and a control unit configured to control the power source unit to continuously apply voltage a plurality of times to one or more electrodes of the plurality of electrodes, and then continuously apply voltage a plurality of times to another one or more electrodes of the plurality of electrodes.

A catheter inserter for inserting a balloon catheter into an insertion opening of an endoscope provided with a valve. The balloon catheter includes a balloon attached on a distal end side of a shaft and configured to be expanded by an expansion fluid supplied from a proximal end side of the shaft, and an elastic band wound around an outer periphery of an intermediate portion of the balloon and configured to limit expansion of the balloon at the intermediate portion. The catheter inserter includes, on a distal end side thereof, a restrained member support structure configured to support a portion of an outer periphery of the elastic band. A proximal end support portion supporting a proximal end portion of the elastic band from a proximal end side is provided at a proximal end portion of the restrained member support structure.

An electrode catheter includes a catheter shaft, an irrigation member, and a distal-end electrode. A female thread is formed on the distal-end electrode. The irrigation member includes a first component having an annular shape, and a second component having an eccentric flow path formed inside a proximal-end part thereof and a male thread formed at a distal-end part thereof, the male thread being screwed to the female thread of the distal-end electrode. With the first component and the distal-end electrode fitted to each other, the first component and the second component fitted to each other, the distal-end portion of the second component inserted into the distal-end electrode, and the female thread and the male thread screwed to each other, the distal-end electrode and the irrigation member are connected to each other while forming, inside the first component, a storage space for a liquid.

A power supply device according to an embodiment of the disclosure includes a power source unit configured to supply power for performing ablation using irreversible electroporation to a plurality of electrodes in an ablation catheter, and a control unit configured to control pulse voltages such that when the ablation is performed by supplying the power, the pulse voltages with a plurality of types of positive amplitude values are applied to three or more application electrodes including the plurality of electrodes.

Object Provided is an electromedical device control system and the like capable of improving the accuracy of determining a blocked state of a flow path. Solving means An electromedical device control system according to an embodiment of the present disclosure includes a determination unit that performs predetermined determination based on a pressure value of a fluid supplied to a flow path of an electromedical device, a pressure threshold set according to a setting value of a flow rate of the fluid, and an amount of change over time in the pressure value. The determination unit determines whether the amount of change over time in the pressure value is a positive value when determining that the pressure value is equal to or greater than the pressure threshold.

A light irradiation device includes a tube including a tube main body and a light emitting portion, a plurality of wiring boards disposed inside the light emitting portion and including a plurality of light emitting elements disposed at an equal interval mounted, an anode lead wire for connecting an anode terminal of each of the wiring boards to a power source, and a cathode lead wire for connecting a cathode terminal of each of the wiring boards to the power source. In the light emitting portion, a central lumen and surrounding lumens that are arrayed at a 90° interval around the central lumen are formed. The wiring boards are disposed in the respective surrounding lumens with the light emitting elements arrayed along a longitudinal direction of the light emitting portion.

A balloon-type electrode catheter includes a catheter shaft including an outer shaft and an inner shaft, a balloon provided at a part including a distal end of the catheter shaft, and an electrode. The balloon includes an outer joining portion an inner joining portion, a distal end large diameter portion, a proximal end large diameter portion, a small diameter portion positioned between the two large diameter portions and being smaller in diameter than the two large diameter portions, a distal end inclined portion connecting the distal end large diameter portion and the small diameter portion, and a proximal end inclined portion connecting the proximal end large diameter portion and the small diameter portion. The electrode is exposed at at least the small diameter portion.

An object is to provide an endoscope by which it is possible to reuse a camera including an expensive solid-state image sensor. An endoscope of the present invention includes a shaft to be inserted into a body, a handle mounted on a proximal end side of the shaft and including a grip and operation knobs, and a camera including a cable tube and a camera head equipped with an image sensor. The camera is separable from the handle and the shaft. The shaft is formed with a camera channel in which the camera is arranged, the handle is provided with a camera channel port communicating with the camera channel, and the cable tube of the camera is attached to a camera connector mounted to the camera channel port when the camera is arranged in the camera channel.