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Ken Yamatani, Tokyo JP

Ken Yamatani, Tokyo JP

Patent application numberDescriptionPublished
20080228213Variable size trocar - A trocar includes a guide tube axially movable within a securing member. The securing member has an annular member having an inside circumference which is complementary with the outside circumference of the guide tube so that the guide tube is axially movable within the annular member.09-18-2008
20090259105MEDICAL TREATMENT SYSTEM AND SUTURING METHOD - A medical treatment system including an endoscope, a treatment tool that is inserted in a channel of the endoscope, and a holder that holds the treatment tool in a manner that enables a user who operates the endoscope to move the treatment tool forward and backward and rotate the treatment tool, with the treatment tool having a treatment portion that performs treatment on a living body; a wire for operating the treatment portion whose distal end is connected to the treatment portion; a sheath portion that has a first sheath that is formed with a coil and in which the wire is inserted in a manner capable of moving forward and backward in the axial direction, and a second sheath that is formed with a coil of a plurality of layers and provided on the outside of the first sheath; and an operating portion to which the base end of the wire is connected and enables forward/backward and rotation operation of the wire; and with the holder holding the operating portion so as to be in a predetermined positional relation with respect to the endoscope.10-15-2009
20090287044ENDOSCOPIC APPARATUS - An endoscopic apparatus comprising an elongate tubular inserting portion; a plurality of arm portions provided on a distal end face of the inserting portion and protruded to the frontal direction which are provided with treatment tools inserted therein, the treatment tools being capable of conducting a treatment; a cylindrical sheath which covers a circumferential surface of the inserting portion, which is movable to a distal side and a proximal side, and which supports the distal side of the plurality of the arm portions when moving to the distal side; and an observation body which is attached inside a distal end portion of the sheath, and by which a frontal view is observed.11-19-2009
20090287046Endoscopic surgical procedure and surgical apparatus - A minimally invasive endoscopic surgical procedure or an endoscopic surgical procedure through natural orifices which includes: introducing a spacial structure in a shrunken state into a body cavity by a spacial structure introduction portion; enlarging the spacial structure in the body cavity; setting the enlarged spacial structure in a predetermined position in the body cavity and supporting the tissues inside of the body cavity with the set spacial structure; inserting a distal end of at least an endoscope or a treatment instrument from at least a part of an opening portion of the spacial structure, and orienting the distal end to a pathological lesion located on the inner side of the tissues inside of the body cavity which is supported by the spacial structure.11-19-2009
20090287240Medical instrument introduction device and method of introducing medical device - A medical instrument introduction device for introducing a medical instrument into a living body provided with; a rigid main body provided with a lumen, a first fixing portion disposed on the main body to fix the main body on the first septate of the living body, and a second fixing portion disposed on a distal end side of the main body with respect to the first fixing portion and to fix the main body on a second septate which is different from the first septate.11-19-2009
20090292164ENDOSCOPE DEVICE - An endoscope device comprising: an elongated tubular insertion part; a plurality of arm members which is provided in the distal portion of the insertion part so as to protrude forward and is capable of treatment with a treatment tool inserted thereinto; an observation main body provided in the distal portion of the insertion part so as to freely separate from the insertion part; an energization member which energizes the observation main body disposed within the distal portion of the insertion part toward the direction opposite to the plurality of the arm members in the radial direction of the insertion part; and a holding mechanism which resists the energization member to hold the observation main body in a state where the observation main body is disposed within the distal portion of the insertion part and is capable of releasing the holding state.11-26-2009
20090306699Blunt Dissector for Separating Blood Vessels from Surrounding Tissue - A blunt dissector for separating a blood vessel from surrounding tissues in a body comprises a longitudinal rod having a proximal end, a distal end, and an internal passage for conducting insufflation gas between the proximal and distal ends. An interior sleeve is mounted within the longitudinal rod for receiving an endoscope at the proximal end. A transparent tip is mounted to the distal end of the longitudinal rod. A handle is mounted to the proximal end of the longitudinal rod. The longitudinal rod has an outer surface along substantially all of the longitudinal rod between the proximal and distal ends consisting essentially of a fluoropolymer.12-10-2009
20100056863MEDICAL MANIPULATOR, MEDICAL TREATMENT SYSTEM, AND METHOD FOR MEDICAL TREATMENT - A medical manipulator which includes: a plurality of arms formed in a cylindrical shape a distal end portion of which is made of a rigid member having a bending portion capable of bending; an insertion portion made of a rigid member having a plurality of channels in which base ends of the plurality of arms are connected to a distal end of the insertion portion so as to connect lumens of the arms to the plurality of channels; a photographic device provided at the distal end of the insertion portion; an operation portion that operates the bending portion; and a transmission member that connects the bending portion and the operation portion, in which the bending portion has: a first bending portion that is capable of bending in a predetermined direction by an operation of the operation portion, and a second bending portion provided in a base end than the first bending portion that is capable of fixing the plurality of arms in a bent state so as to mutually separate, and the transmission portion has: a first region which is flexible, and a second region which is rigid and connected to a base end portion of the first region.03-04-2010
20100069710 TREATMENT METHOD - A treatment method for a tissue in a body cavity of a patient includes the steps of endoscopically introducing treatment tools into the body cavity of the patient from a natural opening of the patient, and setting the posture of the patient to a prone position.03-18-2010
20100292533Endoscopic Cutter with Reconfigurable Guides - A bipolar cutter has a cutter main body for inserting into the interior of a body and a treating electrode that is positioned against an object of examination (such as a blood vessel or a bleeding site) to be electrically cut and cauterized. A guiding member guides the object of examination toward the treating electrode as it is displaced in the axial direction of the cutter main body. The guiding member is comprised of a pair of protruding members and a notched groove or gap that leads to the treating electrode while in a first configuration. A gap adjusting mechanism causes the guiding member or the treating electrode to be displaced in the axial direction to reduce or eliminate the length of the gap so that the treating electrode can better reach flat tissue surfaces for treatment.11-18-2010
20110071354OVERTUBE AND MEDICAL PROCEDURE VIA NATURAL ORIFICE USING THE SAME - An overtube according to this invention includes: an insertion part, that is inserted into a subject and has a lumen, through which a device insertion part of a device for performing a medical procedure inside a body of the subject is removably inserted, the insertion part being inserted into the subject; and a tissue incising part that is disposed at a distal end side of the insertion part so as to cross the lumen and incises a tissue of the subject.03-24-2011

Patent applications by Ken Yamatani, Tokyo JP