1
Masahiro Ishikawa, Koichi Kawashima, Tetsuya Yamamoto, Takayuki Suzuki, Tsutomu Okada: Endoscope. Olympus Optical, Frishauf Holtz Goodman Langer & Chick P C, June 6, 2000: US06071233 (514 worldwide citation)

The present invention provides an endoscope having an opening of a channel tube retracted from a distal end face having an observation window of the insert therein toward a proximal end side. When a plurality of polyps are removed, a picked-up polyp is moved back from the distal end face of the inse ...


2
Yasuhiko Omagari, Tsutomu Okada: Method and apparatus for guiding prosthesis. Olympus Optical, Ostrolenk Faber Gerb & Soffen, June 3, 1986: US04592341 (158 worldwide citation)

A method of and an apparatus for guiding a prosthesis utilizing a flexible sheath in combination with a guide member is taught. Basket forceps assembly which is known in the art is utilized to fracture a calculus located within a coeloma is coupled to the guide member. The guide member carrying the ...


3
Tsutomu Okada: Diathermic snare, medical instrument system using the snare, and method of assembling the medical instrument system. Olympus Corporation, Scully Scott Murphy & Presser P C, March 24, 2009: US07507200 (121 worldwide citation)

A loop section has a bending portion at the distal end. The bending portion bends in a direction that intersects the plane formed by the loop section. A diathermic snare is used in combination with an endoscope. When the loop section expands along the inner circumference of an engagement projection ...


4
Tsutomu Okada: High frequency instrument for incision and excision. Olympus Optical, Ostrolenk Faber Gerb & Soffen, January 27, 1987: US04638802 (120 worldwide citation)

A high frequency instrument for incision and excision of the tissue of an affected part by a semi-circular loop formed by the distal end of a wire electrode upon passage of high frequency current therethrough is disclosed. The wire electrode is disposed within an electrically insulating sheath so as ...


5
Tsutomu Okada, Kazuhiro Inoue: Treating device for endoscopes. Olympus Optical, Frishauf Holtz Goodman & Woodward, October 22, 1991: US05059199 (107 worldwide citation)

A treating device is inserted into the body cavity of a subject through a sheath by freely moving an operation wire in a forward/backward direction. A treating unit is connected to the forward end of the operation wire and includes a plurality of elastic wires extending from the forward end to the b ...


6
Tsutomu Okada: Snare assembly for endoscope. Olympus Optical, January 12, 1988: US04718419 (106 worldwide citation)

A snare assembly is disclosed which is inserted into a region of interest of a human body through a channel of an endoscope. The snare assembly comprises at least one flexible tube, a folded snare which is so inserted into the flexible tube as to be movable back and forth and having a folded end por ...


7
Koji Kambara, Toshitaka Hanzawa, Tsutomu Okada, Tatsuya Saito, Kenichiro Sanagi: High-frequency surgical treating device for use with endoscope. Olympus Optical, Frishauf Holtz Goodman & Woodward, November 17, 1992: US05163938 (82 worldwide citation)

A conductive wire 3 is inserted into a flexible sheath 2 with a wiring portion thereof exposed at a distal end portion of the sheath. Upon the pull of the wire 3, the distal end portion is curved and the exposed wire portion is pull taut to provide a wire portion for incision. A restricting member 5 ...


8
Tsutomu Okada: High-frequency incision tool. Olympus Optical, February 16, 1988: US04724836 (73 worldwide citation)

A high-frequency incision tool has a flexible sheath which is adapted to be inserted into the body cavity along with an endoscope. A suction port is formed at the distal end of the sheath. A wire is inserted into the sheath and a part of the wire is exposed from the sheath to form an incision sectio ...


9
Tsutomu Okada: Basket type grasping tool for surgery. Olympus Optical, Frishauf Holtz Goodman Langer & Chick P C, July 25, 2000: US06093196 (72 worldwide citation)

A basket type grasping tool of the present invention is equipped with a basket including a plurality of groups of elastic wires. The elastic wires in the respective elastic wire groups have a branch point at the same distance position in an intermediate position from a forward end tip to a rear end ...


10
Tsutomu Okada: Calculus crushing apparatus. Olympus Optical, May 3, 1988: US04741335 (54 worldwide citation)

A crushing apparatus has a flexible sheath which is adapted to be inserted into a body cavity with the aid of an endoscope. An operating wire longer than the sheath is slidably inserted into the sheath. A collapsible basket for seizing a calculus produced in a body cavity is coupled to the distal en ...