Shiga University of Medical Science

Machida Endoscope Co., Ltd.

Alfresa Pharma Corporation

Micron Shiga Inc.

Yoshimasa Kurumi

Shigeyuki Naka

Tohru Tani

Kunihiko Miyagi

Masayuki Misawa

Koichi Wakikaido

Shigehiro Morikawa

Makoto Hosaka

Mamoru Takashina

Hideki Ishikawa

Teruaki Oikawa

Provided is a medical treatment device capable of eliminating inconvenience of manipulation in actual clinical use, and ensuring a visual field by introducing a curve in the vicinity of an electrode portion of an outer cylindrical tube. The medical treatment device has the following structure: an electrode portion including a first electrode and a second electrode arranged opposed to the first electrode, the electrode portion having a grasping function, a coagulating function, and a cutting function; an operation portion for executing drive of the respective functions of the first electrode and the second electrode; a shaft portion for connecting the electrode portion and the operation portion; a connector portion connectable to a microwave power source; and a conductive rod, which is provided inside the shaft portion, for transmitting a microwave to the electrode portion, the medical treatment device utilizing the microwave being configured to: hold body tissue between the first electrode and the second electrode; coagulate the body tissue by supplying the microwave to the first electrode and the second electrode; and cut the body tissue through a mutual action of the first electrode and the second electrode, in which the shaft portion and the electrode portion are connected to each other with a bent holder.

Medical treatment device

The flexible endoscopehas a flexible insertion portionto be inserted in an observation zoneof a MRI apparatus. The insertion portionhas an inner tubemade of resin, triple helical tubescovering the inner tubeand an outer tubemade of resin and covering the triple helical tubes. The triple helical tubesinclude a first helical bandhelically wound around an outer peripheral surface of the inner tube, a second helical bandhelically wound around an outer periphery of the first helical bandin a direction opposite to a winding direction of the first helical bandand a third helical bandhelically wound around an outer periphery of the second helical bandin a direction opposite to the winding direction of the second helical band. The first to third helical bandsare made of phosphor bronze or copper-silver alloy, which are materials having low magnetic susceptibility.

Flexible endoscope suitable for MRI

Provided is an operating tool for organism, in particular, a microwave endoscope forceps. In terms of the operating tool for organism, provided is a multifunctional operating tool which has holding and scissors functions simultaneously, and may further perform coagulation (tissue fixation) by microwaves. The operating tool has no definite fulcrum, and has both the holding and scissors functions with a simple structure by deforming a long-track rod called beam. Two blades are insulated from each other so as to allow microwave current supply. With this structure, an operating tool having three functions, i.e., 'a holding function', 'a coagulating function', and &#x201c;a cutting function&#x201d; with a single tool may be developed.

Microwave endoscope forceps

Disclosed is an electrode device for microwave surgery which is provided with a marker securely fixed to the central electrode, which marker can provide a magnetic susceptibility artifact of a uniform size and shape free of fluctuation among electrode devices. The electrode device comprise a central conductor body, a tubular insulator body which covers the central conductor body except its distal end, a tubular external electrode which covers the tubular insulator body except its distal end part, and a central electrode which covers the distal end part of the central conductor body. The central conductor body, the insulator body, the external electrode and the central electrode are made of a nonmagnetic material, and a cylindrical member made of a magnetic material is fit around the distal end part of the central conductor body. At least one projection is defined on the lateral face of the central conductor body at the distal side of the cylindrical member, and the cylindrical member engages with the projection in the distal direction.

Electrode device for microwave surgery

Growing community of inventors

Otsu, Japan

Yoshimasa Kurumi