Olympus Optical Company, Ltd.

Hiroyuki Kusunoki

Tadao Hagino

Hitoshi Karasawa

Tetsumaru Kubota

Tatsuo Nagasaki

Takeaki Nakamura

Masaaki Hayashi

Hiroyoshi Fujimori

Syuichi Takayama

Akio Nakada

Shinji Hatta

Akihiro Taguchi

Toshiki Terayama

Mototsugu Ogawa

Shozo Shibuya

Takeshi Yokoi

Shinichi Imade

Yasuhiro Ueda

Masato Toda

Akira Shiga

Shinichi Nishigaki

Toshihiko Hashiguchi

Yoshio Shishido

Kazumasa Matsuo

Masahiko Kato

Minoru Okabe

Yutaka Ohshima

Koji Shimomura

Morihide Mizumoto

Daisaku Negoro

Teruaki Sugata

Yutaka Yoshida

Ryouichi Konou

Shozo Hirayama

A surgical resecting tool (1) whereby a cartilage, cartilage knob or tumor within a body cavity, for example, such articulation cavity as of a knee is resected from outside the body cavity without being incised and is taken out of the body cavity is provided with a rigid outer tube (4) removably provided in the front part of a body part (2) which is also a holding part and has a rotary power source 28. The outer tube (4) is provided with an opening (7) near the front end part and with a curved part 9 in the rear of the opening (7). The outer tube 4 is provided with a cutting part (13) in the front end part and is removably connected in the rear end part to the rotary power source (28) to resect a living body tissue by rotating and driving the cutting part (13). An inner tube (6) having a flexible part (12) at least in the position corresponding to the above mentioned curved part (9 ) is inserted through the outer tube (4).

Surgical resecting tool

A high-frequency treating instrument comprises an insertion tube having electric conductivity, an electrically insulating, tubular member fitted over an outer periphery of the insertion tube with a distal open end of the tubular member projected ahead of a distal end of the insertion tube, a current supply section for supplying a high-frequency current which is fed from a power source to the insertion tube, an electrode section fixedly provided on the distal end of the insertion tube to carry the high-frequency current there, the electrode section being projected out of the distal open end of the tubular member to allow the high-frequency current which is fed from the power source to be received through the insertion tube, and a treating section provided on the distal end of the electrode section projected out of the distal open end of the tubular member and allowing the high-frequency current to be carried therethrough so that an affected living tissue of a human subject can be treated through heat resulting from the high-frequency current.

High-frequency treating instrument

A medical resecting device is disclosed in which, a living organism tissue is resected with ultrasonic vibrations while the corresponding body cavity is observed with an optical observation pipe. The resecting device includes an ultrasonic vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a probe connected to the front portion of the horn to transmit the ultrasonic vibrations generated by the vibrator, the probe being provided with a rod-like shaft and a distal end portion with a resecting blade, a power source unit for supplying a drive voltage to the vibrator, and an optical observation pipe having a guide hole in which the shaft of the probe is inserted.

Resecting device for living organism tissue utilizing ultrasonic

A medical treatment device for resecting, e.g., a prostate or breaking a bladder stone, which includes a vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a casing for accommodating the vibrator and the horn, a probe connected to the front portion of the horn to transmit ultrasonic vibrations generated by the vibrator, and a power source unit for supplying a drive voltage to the vibrator, the power source unit having an oscillator for producing a wave having a frequency for vibrating the probe and a frequency switching circuit for selecting an oscillating frequency at which the distal end of the probe serves as a loop of vibration or a frequency at which the distal end of the probe serves as a node of vibration.

Medical treatment device utilizing ultrasonic wave

This rigid electronic endoscope is formed of an endoscope body and an elongate tubular guide tube. An insertable part to be inserted through the guide tube is provided in front of this endoscope body. A solid state imaging device as an imaging means is provided in the tip part of this insertable part and a supporting part of a cross-sectional area smaller than of this tip part is provided in the rear of this tip part. A space as a treating tool inserting path or as a liquid feeding and sucking tube path which can feed and drain an irrigating liquid is formed between this supporting part and the inner surface of the guide tube.

Rigid electronic endoscope

This endoscope is provided within an endoscope body having an elongate insertion part having an observing window at the tip and an operating part provided as connected to the rear end of this insertion part with an observing optical system transmitting an observed image from the tip of the above mentioned insertion part to the above mentioned operating part and is provided with a first airtightening device for making the above mentioned endoscope body airtight in the structure and a second airtightening device for making at least a part of the above mentioned observing optical system airtight in the structure or is provided within the above mentioned endoscope body with a hygroscopic member formed of a flexible sheet-shaped hygroscopic material.

Endoscope with means for preventing an observing optical system from

A surgical cutting instrument essentially comprises an outer sheath tube, an inner stationary tube which is disposed within said outer sheath tube such that the distal end of the inner tube projects from the distal end of the outer sheath tube and is provided with a cutting opening for drawing cut tissue chips at the peripheral wall of the distal end of the inner tube and a sliding member which is slidably disposed between said outer sheath tube and said inner tube so as to open and close said cutting opening and is provided with an outer cutting edge which engages an inner cutting edge of said cutting opening, on the distal end edge of the sliding member, whereby a body tissue is cut by axially and slidingly reciprocating said sliding member to open and close said cutting opening and cut tissue chips are withdrawn from the body by suction through a suction channel of the inner tube.

Surgical cutting instrument

Growing community of inventors

Tokyo, Japan

Hiroyuki Kusunoki