Abstract: A catheter includes an elongated body, a distal end side of which is inserted into a body, and an electrode provided around an axis of the elongated body and expandable in a direction intersecting the axis. The electrode in an expanded state includes an intermediate portion at least partially including a portion in which element wires spread like a mesh, a proximal end portion located closer to a proximal end side of the elongated body than the intermediate portion and in which the element wires gather, and a distal end portion located closer to the distal end side than the intermediate portion and in which the element wires gather. The intermediate portion includes a maximum portion where an outer dimension of the electrode is maximized. The maximum portion is located closer to the proximal end side than a center of the electrode in an axial direction of the elongated body.

Abstract: A catheter according to an embodiment of the disclosure includes a catheter shaft extending in an axial direction and having a near-distal end structure including a plurality of electrodes, and a handle mounted on a proximal end side of the catheter shaft. The handle includes a handle body extending in the axial direction, and an operation mechanism configured to be rotatable with respect to the handle body about a rotation axis extending along the axial direction. The operation mechanism is rotationally operated when the near-distal end structure is rotationally operated about the rotation axis while a length of the near-distal end structure in the axial direction is fixed.

Abstract: Provided is a catheter in which a spline changes its shape into an intended shape. A catheter includes a shaft to be inserted into the body, a plurality of splines connected to the distal end side of the shaft, and a distal end member connected to the distal end side of the splines. The plurality of splines include a first spline and a second spline. The first spline and the second spline are located adjacent to each other and their motions are restrained by a first restraining member.

Abstract: [Problem] Provided is a power supply device and the like capable of improving convenience. [Solution] A power supply device according to an embodiment of the present disclosure includes: a power supply unit that supplies power to an electromedical device including a plurality of electrodes; and a control unit that controls the power supply unit such that the power is supplied to a part of the plurality of electrodes.

Abstract: A catheter device is to be applied to a catheter and includes a tube member and a second handle. The tube member is configured to be inserted through a lumen provided in a catheter shaft of the catheter. The second handle is provided on a base end of the tube member, and includes a deformation operating member. The second handle is provided separately from a first handle provided on a base end of the catheter shaft. Upon bending deformation of a region in the vicinity of a tip end of the tube member in response to an operation of the deformation operating member, the tube member is configured to be pressed against a wall surface of the lumen of the catheter shaft to displace a region in the vicinity of a tip end of the catheter shaft. The second handle is configured to be integrated with the first handle.

Abstract: A catheter device is to be applied to a catheter and includes a tube member and a handle. The tube member is configured to be inserted through a lumen provided in a catheter shaft of the catheter. The handle is provided on a base end of the tube member, and includes a deformation operating member configured to receive an operation that causes a region in the vicinity of a tip end of the tube member to be subjected to bending deformation. Upon the bending deformation of the region in the vicinity of the tip end of the tube member in response to the operation of the deformation operating member, the tube member to be subjected to the bending deformation is configured to be pressed against a wall surface of the lumen of the catheter shaft to displace a region in the vicinity of a tip end of the catheter shaft.

Abstract: A suturing device for being inserted into and used in a body is disclosed. The suturing device includes a front arm that has string support portions supporting both ends of a surgical string, and a front guide portion attached to the string support portions and a back arm that has a needle-shaped member, a needle support portion supporting the needle-shaped member in a state of pointing to a predetermined first direction, and a back guide portion attached to the front guide portion such that the back guide portion is capable of sliding in a direction substantially parallel to the first direction, and rotating around an axis substantially parallel to the first direction. The front guide portion has a first guide groove guiding the needle-shaped member to one end of the surgical string supported by the string support portion and a second guide groove guiding the needle-shaped member.

Abstract: A suturing device for being inserted into and used in a body is disclosed. The suturing device includes a front arm that has string support portions supporting both ends of a surgical string, and a front guide portion attached to the string support portions and a back arm that has a needle-shaped member, a needle support portion supporting the needle-shaped member in a state of pointing to a predetermined first direction, and a back guide portion attached to the front guide portion such that the back guide portion is capable of sliding in a direction substantially parallel to the first direction, and rotating around an axis substantially parallel to the first direction. The front guide portion has a first guide groove guiding the needle-shaped member to one end of the surgical string supported by the string support portion and a second guide groove guiding the needle-shaped member.