Patents by Inventor Masahide Ohyama
Masahide Ohyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7758574Abstract: A high frequency cauterizing power supply unit includes a control circuit for controlling a power supply circuit and waveform generating circuit. The control circuit includes a timer for measuring an output period and pause period, and a counter for measuring the number of times of output. The control circuit detects a setting power and the number of times of output according to the diameter of a blood vessel with a simple method in a short period of time, and controls the output period so as to be shortened, and also controls a setting power and the number of times of output depending on the diameter of the blood vessel.Type: GrantFiled: January 21, 2004Date of Patent: July 20, 2010Assignee: Olympus CorporationInventors: Kazuya Hijii, Shinji Hatta, Tsuyoshi Hayashida, Masahide Ohyama, Kenji Harano
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Patent number: 7667592Abstract: A treatment instrument output data analysis section includes a probe ID extraction section, an output waveform extraction section, a data analysis section and an analysis result output section. The analysis result output section of the treatment instrument output data analysis section can display on a centralized display panel a synthetic image made by synthesizing a frame image stored in an image storage section of an endoscopic camera apparatus and an analysis result analyzed by the data analysis section.Type: GrantFiled: June 12, 2007Date of Patent: February 23, 2010Assignee: Olympus Medical Systems Corp.Inventors: Masahide Ohyama, Hideyuki Shoji, Sumihiro Uchimura, Masanori Gocho, Takashi Mihori, Shinji Hatta, Mitsumasa Okada, Makoto Inaba, Masakazu Gotanda, Yoshitaka Honda
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Publication number: 20080129527Abstract: A treatment instrument output data analysis section includes a probe ID extraction section, an output waveform extraction section, a data analysis section and an analysis result output section. The analysis result output section of the treatment instrument output data analysis section can display on a centralized display panel a synthetic image made by synthesizing a frame image stored in an image storage section of an endoscopic camera apparatus and an analysis result analyzed by the data analysis section.Type: ApplicationFiled: June 12, 2007Publication date: June 5, 2008Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Masahide Ohyama, Hideyuki Shoji, Sumihiro Uchimura, Masanori Gocho, Takashi Mihori, Shinji Hatta, Mitsumasa Okada, Makoto Inaba, Masakazu Gotanda, Yoshitaka Honda
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Patent number: 7172591Abstract: When a user steps on a footswitch, high-frequency output power is delivered. A control circuit included in a diathermic power supply calculates the impedance ZSn that is offered by a living tissue immediately after delivery of high-frequency output power is started during the n-th delivery period. The control circuit also calculates the impedance ZEn that is offered thereby immediately before delivery of high-frequency output power is discontinued with elapse of predetermined time. The control circuit then discontinues delivery of high-frequency output power for the predetermined time, and calculates a difference ?Zn between the impedances. When the difference meets a predetermined condition that implies coagulation or when the number of times of delivery reaches a predetermined value, the control circuit discontinues delivery of high-frequency output power.Type: GrantFiled: September 11, 2003Date of Patent: February 6, 2007Assignee: Olympus CorporationInventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii, Koji Yamauchi, Shinji Hatta
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Patent number: 7128742Abstract: An electric operation apparatus includes a high-frequency generating device which generates high-frequency current for treating the body anatomy, an active electrode which supplies to the body anatomy, the high-frequency current generated by the high-frequency generating device, a solution supply device which supplies a conductive solution around the active electrode, a return electrode which returns, via the conductive solution supplied by the solution supply device, the high-frequency current supplied to the body anatomy from the active electrode in the conductive solution, a sensor which detects a conductive state of the high-frequency current that flows between the active electrode and the return electrode, and a control device which determines a state of bubbles generated around the active electrode and which changes an operation mode, based on the conductive state of the high-frequency current detected by the sensor.Type: GrantFiled: July 8, 2003Date of Patent: October 31, 2006Assignee: Olympus CorporationInventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Koji Shimomura, Kenji Harano, Tsuyoshi Hayashida
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Patent number: 7060065Abstract: In a resectscope apparatus of the present invention, by using an output from a second output transformer, high frequency current passes through a treating electrode when the treating electrode is in contact with a living tissue in a conductive liquid. Then, the high frequency current flows between the treating electrode and a return electrode. Thus, the treating electrode generates heat. Bubbles are formed from the conductive liquid on the peripheral surface of the treating electrode and cover the treating electrode. Interlelectrode resistance increases from a resistance and becomes higher resistance to a substantially insulating state. Then, the voltage increases, and discharging occurs between the treating electrode and the living tissue. By using the high frequency current from the discharging, the living tissue is treated.Type: GrantFiled: May 15, 2003Date of Patent: June 13, 2006Assignee: Olympus CorporationInventors: Masahide Ohyama, Kenji Harano, Kazuya Hijii
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Patent number: 7001381Abstract: An electric operation apparatus including: a high frequency current generating circuit for feeding a high frequency current to electrodes; a direct power supply circuit for supplying variable electric power to the high frequency current generating circuit; a therapeutic condition monitoring circuit for monitoring a therapeutic condition brought about by the high frequency current on the basis of the high frequency current outputted by the high frequency electric current generating circuit; and a supplied power setting circuit for supplying a setting signal for supplied electric power to the power supply circuit on the basis of the monitoring results obtained by the therapeutic condition monitoring circuit.Type: GrantFiled: November 17, 2003Date of Patent: February 21, 2006Assignee: Olympus CorporationInventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii
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Patent number: 6929643Abstract: A treatment electrode of a resectoscope apparatus is substantially semicircular-shaped. A length a of a first segment and a length b of a second segment satisfy a relationship of (a>2·b). The first segment is in parallel with the plane on which a parallel lead member exists and has the maximum width of the treatment electrode. The second segment is vertical to the first segment and has the maximum distance between an intersection to the first segment and an intersection to the treatment electrode.Type: GrantFiled: April 15, 2003Date of Patent: August 16, 2005Assignee: Olympus CorporationInventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Kenji Harano, Takeaki Nakamura, Shuichi Kimura
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Patent number: 6918909Abstract: A resectoscope apparatus includes a high-frequency generating device which generates high-frequency current, a hollow sheath which can be inserted in the celom, a scope which is arranged in the sheath and which can observe the celom, an active electrode which transmits the high-frequency current to the body organ, and a solution supply device which supplies a solution to the hollow sheath. At least one of the sheath and the scope has conductivity. The sheath or the scope having the conductivity is connected to high frequency generating device via a connecting member so as to collect return current.Type: GrantFiled: April 10, 2003Date of Patent: July 19, 2005Assignee: Olympus CorporationInventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Kenji Harano, Takeaki Nakamura, Shuichi Kimura
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Publication number: 20050101948Abstract: When a user steps on a footswitch, high-frequency output power is delivered. A control circuit included in a diathermic power supply calculates the impedance ZSn that is offered by a living tissue immediately after delivery of high-frequency output power is started during the n-th delivery period. The control circuit also calculates the impedance ZEn that is offered thereby immediately before delivery of high-frequency output power is discontinued with elapse of predetermined time. The control circuit then discontinues delivery of high-frequency output power for the predetermined time, and calculates a difference ?Zn between the impedances. When the difference meets a predetermined condition that implies coagulation or when the number of times of delivery reaches a predetermined value, the control circuit discontinues delivery of high-frequency output power.Type: ApplicationFiled: September 11, 2003Publication date: May 12, 2005Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii, Koji Yamauchi, Shinji Hatta
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Publication number: 20050101949Abstract: An electric operation apparatus including: a high frequency current generating circuit for feeding a high frequency current to electrodes; a direct power supply circuit for supplying variable electric power to the high frequency current generating circuit; a therapeutic condition monitoring circuit for monitoring a therapeutic condition brought about by the high frequency current on the basis of the high frequency current outputted by the high frequency electric current generating circuit; and a supplied power setting circuit for supplying a setting signal for supplied electric power to the power supply circuit on the basis of the monitoring results obtained by the therapeutic condition monitoring circuit.Type: ApplicationFiled: November 17, 2003Publication date: May 12, 2005Applicant: Olympus Optical Co., Ltd.Inventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii
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Patent number: 6872207Abstract: According to a resectscope apparatus of the present invention, in order to control the output properly by discriminating electric characteristics of perfusion fluids, under control of the control circuit (101), a predetermined detection current is fed from the output transformer circuit (105) by using power, which does not produce an electrical breakdown even in the insulative liquid (161) or in the air. A predetermined lapse of time until the output is stabilized is waited. The sensor signal processing circuit (107) A/D converts and measures current values detected by the current sensors (106a) and (106b). Whether a treating electrode and a return electrode are in a conductive liquid, in an insulative liquid or in the air is determined. Then, the output control processing is performed.Type: GrantFiled: May 13, 2003Date of Patent: March 29, 2005Assignee: Olympus CorporationInventors: Masahide Ohyama, Kenji Harano, Kazuya Hijii
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Patent number: 6855142Abstract: An electrosurgical device for treating a body tissue with a high-frequency power includes an electrode for exposing the body tissue to the high-frequency power for treatment, and a high-frequency cautery power supply having a control circuit that outputs a high-frequency power generator for outputting the high-frequency power to the electrode.Type: GrantFiled: April 29, 2002Date of Patent: February 15, 2005Assignee: Olympus CorporationInventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii, Shinji Hatta
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Publication number: 20050010204Abstract: An electric operation apparatus includes a high-frequency generating device which generates high-frequency current for treating the body anatomy, an active electrode which supplies to the body anatomy, the high-frequency current generated by the high-frequency generating device, a solution supply device which supplies a conductive solution around the active electrode, a return electrode which returns, via the conductive solution supplied by the solution supply device, the high-frequency current supplied to the body anatomy from the active electrode in the conductive solution, a sensor which detects a conductive state of the high-frequency current that flows between the active electrode and the return electrode, and a control device which determines a state of bubbles generated around the active electrode and which changes an operation mode, based on the conductive state of the high-frequency current detected by the sensor.Type: ApplicationFiled: July 8, 2003Publication date: January 13, 2005Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Koji Shimomura, Kenji Harano, Tsuyoshi Hayashida
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Publication number: 20040172111Abstract: A high frequency cauterizing power supply unit includes a control circuit for controlling a power supply circuit and waveform generating circuit. The control circuit includes a timer for measuring an output period and pause period, and a counter for measuring the number of times of output. The control circuit detects a setting power and the number of times of output according to the diameter of a blood vessel with a simple method in a short period of time, and controls the output period so as to be shortened, and also controls a setting power and the number of times of output depending on the diameter of the blood vessel.Type: ApplicationFiled: January 21, 2004Publication date: September 2, 2004Applicant: Olympus CorporationInventors: Kazuya Hijii, Shinji Hatta, Tsuyoshi Hayashida, Masahide Ohyama, Kenji Harano
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Patent number: 6730080Abstract: When a user steps on a footswitch, high-frequency output power is delivered. A control circuit included in a diathermic power supply calculates the impedance ZSn that is offered by a living tissue immediately after delivery of high-frequency output power is started during the n-th delivery period. The control circuit also calculates the impedance ZEn that is offered thereby immediately before delivery of high-frequency output power is discontinued with elapse of predetermined time. The control circuit then discontinues delivery of high-frequency output power for the predetermined time, and calculates a difference &Dgr;Zn between the impedances. When the difference meets a predetermined condition that implies coagulation or when the number of times of delivery reaches a predetermined value, the control circuit discontinues delivery of high-frequency output power.Type: GrantFiled: August 14, 2001Date of Patent: May 4, 2004Assignee: Olympus CorporationInventors: Kenji Harano, Masahide Ohyama, Kazuya Hijii, Koji Yamauchi, Shinji Hatta
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Publication number: 20040082938Abstract: A resectoscope apparatus includes a high-frequency generating device which generates high-frequency current, a hollow sheath which can be inserted in the celom, a scope which is arranged in the sheath and which can observe the celom, an active electrode which transmits the high-frequency current to the body organ, and a solution supply device which supplies a solution to the hollow sheath. At least one of the sheath and the scope has conductivity. The sheath or the scope having the conductivity is connected to high frequency generating device via a connecting member so as to collect return current.Type: ApplicationFiled: April 10, 2003Publication date: April 29, 2004Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Kenji Harano, Takeaki Nakamura, Shuichi Kimura
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Publication number: 20040019351Abstract: A treatment electrode of a resectoscope apparatus is substantially semicircular-shaped. A length a of a first segment and a length b of a second segment satisfy a relationship of (a>2·b). The first segment is in parallel with the plane on which a parallel lead member exists and has the maximum width of the treatment electrode. The second segment is vertical to the first segment and has the maximum distance between an intersection to the first segment and an intersection to the treatment electrode.Type: ApplicationFiled: April 15, 2003Publication date: January 29, 2004Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Masahide Ohyama, Kazuya Hijii, Shinji Hatta, Kenji Harano, Takeaki Nakamura, Shuichi Kimura
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Publication number: 20030233089Abstract: In a resectscope apparatus of the present invention, by using an output from a second output transformer 131, high frequency current passes through a treating electrode 41 when the treating electrode 41 is in contact with a living tissue 152 in a conductive liquid 151. Then, the high frequency current flows between the treating electrode 41 and a return electrode 45. Thus, the treating electrode 41 generates heat. Bubbles 153 are formed from the conductive liquid 151 on the peripheral surface of the treating electrode 41 and cover the treating electrode 41. Interlelectrode resistance increases from a resistance R1 and becomes higher resistance to a substantially insulating state. Then, the voltage increases, and discharging occurs between the treating electrode 41 and the living tissue 152. By using the high frequency current from the discharging, the living tissue is treated.Type: ApplicationFiled: May 15, 2003Publication date: December 18, 2003Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Masahide Ohyama, Kenji Harano, Kazuya Hijii
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Publication number: 20030233088Abstract: According to a resectscope apparatus of the present invention, in order to control the output properly by discriminating electric characteristics of perfusion fluids, under control of the control circuit (101), a predetermined detection current is fed from the output transformer circuit (105) by using power, which does not produce an electrical breakdown even in the insulative liquid (161) or in the air. A predetermined lapse of time until the output is stabilized is waited. The sensor signal processing circuit (107) A/D converts and measures current values detected by the current sensors (106a) and (106b). Whether a treating electrode and a return electrode are in a conductive liquid, in an insulative liquid or in the air is determined. Then, the output control processing is performed.Type: ApplicationFiled: May 13, 2003Publication date: December 18, 2003Applicant: OLYMPUS OPTICAL CO.,LTD.Inventors: Masahide Ohyama, Kenji Harano, Kazuya Hijii