Olympus Optical Company, Ltd.

Kiyotaka Matsuno

Seiji Yamaguchi

Takashi Fukaya

Masakazu Nakamura

Hideyuki Adachi

Kuniaki Kami

Michio Sato

Eiichi Fuse

Yasundo Tanaka

Yoshihiro Kosaka

Koichi Umeyama

Katsuya Suzuki

Tatsuya Saito

Yutaka Yanuma

Akio Nakada

Masahiro Kawashima

Katsushi Watanabe

Minoru Shinozuka

Yukio Sato

Akihito Sadamasa

A clip device for a living tissue in a body cavity includes an introducing tube insertable into the body cavity. An operating member of the device is advanceably and retreatably inserted into the introducing tube; the operating member has a distal end portion. An operating wire is advanceably and retreatably inserted into the operating member, and the operating wire has a distal end portion and a retainer attached to the distal end portion of the operating wire. The clip device further includes a clip having a proximal end portion and a pair of arm portions extending from the proximal end portion and provided with a tendency to open. A clip squeezing ring is removably attached to the distal end portion of the operating member for closing the arm portions of the clip by fitting to the arm portions of the clip. And a coupling member is insertable into the clip squeezing ring, and the coupling ring is removably engaged with the retainer. The coupling ring further includes a hook portion to be engaged with the proximal end portion of the clip; holding member holds the coupling member inside the clip squeezing ring such that the coupling member can be removed from the clip squeezing ring when the operating wire is retreated. At least one of the arm portions is bent inward so as to be bow-shaped, and has an inner side provided with friction increasing the structure for increasing friction between the inner side of the arm portion and the living tissue.

Clip device

Endoscopic treatment tool

In a valvulotome, when an operating wire is advanced or withdrawn, a pair of arms project from or sink into a sheath, and cutters at the tips or the arms open or close. When the arms are stowed in the sheath, forces causing the two cutters to join change directions sequentially with three pairs of bents of the arms as boundaries. Thus, the blades of the two cutters are stowed in the sheath reliably.

Freely projectable/sinkable valvulotome and freely projectable/sinkable

An endoscope system includes a movement detector for detecting an operator's movement, a signal processor for processing a signal the detector detects, and a control for controlling drive which drives a medical device according to an output signal of the signal processor. The endoscope system bends a bending section of an endoscope serving as a medical device according to the operator's movement, and thus orients the observation field of view to a direction the operator intends or controls the movement of a treatment adapter serving as a medical device. The endoscope system includes a superimposing means for superimposing an image associated with the operator's movement onto an image acquired by an imaging device associated with the endoscope system.

Endoscope system with automatic control according to movement of an

A medical system has a detecting device for detecting three dimensional image information about a living body, a signal processing circuit for processing the image signal transmitted from the detecting device, and an object information reproduction device. The object information reproduction device comprises a movable displacement element which is touched by the operator and acts according to the output from the signal processing circuit so as to cause the operator to tactually sense information about the object. Thus, the operator is able to recognize the degree of unevenness in a tactile manner by touching the displacement element. Other embodiments include means for sensing and reproducing hardness and temperature of the object.

Medical system having object information reproduction means for palpation

An apparatus for blocking a vein branch is provided with an outer tube having a tubular passage opened at its distal and proximal ends and a bent distal end portion, an inner tube slidably inserted in the outer tube so as to be projected and retracted from the opening formed in the distal end portion of the outer tube and having a storing portion filled with a vein-branch blocking member, and a push-out member for pushing out the blocking member in the vein branch.

Apparatus for blocking a vein branch and method of blocking a vein branch

A medical system according to the present invention comprises a medical apparatus including an operation unit manipulated by a surgeon and a treatment section formed away from the operation unit for treating a subject, a detector or a pressure sensor for detecting a state of contact between the subject and the treatment section, and a reproduction mechanism for amplifying a small contact pressure according to the output of the detector and thus reproduce the state of contact so that the surgeon can perceive the state of contact.

Medical system for reproducing a state of contact of the treatment

According to the present invention, a sheath has flexibility, and includes a first lumen for guiding a conducting wire in the sheath and a second lumen for injecting contrast medium, which are made of insulating material. The wire exposes itself outside at openings formed in the terminal position of the first lumen, and thus forms a dissecting section for dissecting a contact tissue with supplied high-frequency current. The proximal portion of the sheath is connected to a bifurcating section for bifurcating the sheath into a first path having substantially the same cross-sectional area as the first lumen and communicating with the first lumen for guiding the wire so that the wire will not buckle up and a second path communicating with the second lumen. An operation handle for advancing or withdrawing the wire is connected externally to the back of the first path.

Diathermic dissector with a bifurcation having substantially the same

A stent tube comprises an inner tube and an outer tube with a reinforcing braided member fitted between the inner tube and the outer tube. The inner tube is made of a fluorine-based resin. The stent tube is hard to clog at its inner wall and has a strength enough great for a bending force.

Growing community of inventors

Hachioji, Japan

Kiyotaka Matsuno