Patents by Inventor Hideichi Tsuda
Hideichi Tsuda 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).
-
Patent number: 6881190Abstract: An apparatus for determining a standard pulse-wave-propagation-velocity-related value for a living subject, comprising: a blood-pressure measuring device for measuring a blood pressure of the subject; an age determining device for determining an age of the subject; and a standard-pulse-wave-propagation-velocity-related-value determining device for determining the standard pulse-wave-propagation-velocity-related value for the subject, based on the blood pressure of the subject measured by the blood-pressure measuring device and the age of the subject determined by the age determining device, according to a predetermined relationship between (A) (a1) blood pressure and (a2) age and (B) standard pulse-wave-propagation-velocity-related value.Type: GrantFiled: February 3, 2003Date of Patent: April 19, 2005Assignee: Colin Medical Technology CorporationInventors: Akira Yamashina, Hideichi Tsuda
-
Publication number: 20030167011Abstract: An apparatus for determining a standard pulse-wave-propagation-velocity-related value for a living subject, comprising: a blood-pressure measuring device for measuring a blood pressure of the subject; an age determining device for determining an age of the subject; and a standard-pulse-wave-propagation-velocity-related-value determining device for determining the standard pulse-wave-propagation-velocity-related value for the subject, based on the blood pressure of the subject measured by the blood-pressure measuring device and the age of the subject determined by the age determining device, according to a predetermined relationship between (A) (a1) blood pressure and (a2) age and (B) standard pulse-wave-propagation-velocity-related value.Type: ApplicationFiled: February 3, 2003Publication date: September 4, 2003Applicant: COLIN CORPORATIONInventors: Akira Yamashina, Hideichi Tsuda
-
Patent number: 6440079Abstract: An apparatus for measuring a superior-and-inferior-limb blood-pressure index of a living subject, including a first measuring device which measures a first blood pressure of an inferior limb; a second measuring device which measures a second blood pressure of a superior limb; an information obtaining device for iteratively obtaining information changing in relation with change of blood pressure of the subject; a change-value determining device for determining a change value of blood pressure of the subject between a first time when the first blood pressure is measured and a second time when the second blood pressure is measured, based on a first piece of information obtained by the information obtaining device at the first time and a second piece of information obtained by the information obtaining device at the second time; a corrected-blood-pressure determining device for determining, based on the determined change value, one of the first and second blood pressures to a corrected blood pressure that would hType: GrantFiled: October 16, 2001Date of Patent: August 27, 2002Assignee: Colin CorporationInventors: Toshihiko Ogura, Takashi Honda, Hideichi Tsuda
-
Publication number: 20020082508Abstract: An apparatus for measuring a superior-and-inferior-limb blood-pressure index of a living subject, including a first measuring device which measures a first blood pressure of an inferior limb; a second measuring device which measures a second blood pressure of a superior limb; an information obtaining device for iteratively obtaining information changing in relation with change of blood pressure of the subject; a change-value determining device for determining a change value of blood pressure of the subject between a first time when the first blood pressure is measured and a second time when the second blood pressure is measured, based on a first piece of information obtained by the information obtaining device at the first time and a second piece of information obtained by the information obtaining device at the second time; a corrected-blood-pressure determining device for determining, based on the determined change value, one of the first and second blood pressures to a corrected blood pressure that would hType: ApplicationFiled: October 16, 2001Publication date: June 27, 2002Applicant: COLIN CORPORATIONInventors: Toshihiko Ogura, Takashi Honda, Hideichi Tsuda
-
Patent number: 6315736Abstract: An apparatus for monitoring an anesthetic depth of a living subject, including at least two devices of (a) an arousal-index determining device which determines an arousal index indicating a degree of arousal of the subject, (b) a pain-index determining device which determines a pain index indicating a degree of pain of the subject, and (c) a muscular-relaxation-index determining device which determines a muscular-relaxation index indicating a degree of muscular relaxation of the subject, and an anesthetic-depth determining device for determining, based on at least two indexes determined by the at least two devices, an anesthetic depth of the subject according to a predetermined relationship between anesthetic depth and the at least two indexes.Type: GrantFiled: May 30, 2000Date of Patent: November 13, 2001Assignee: Colin CorporationInventors: Yoshiaki Tsutsumi, Hideichi Tsuda
-
Patent number: 5980464Abstract: An apparatus for evaluating an exercise function of a person who undergoes an exercise load, including a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person, a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person, a first calculating device which successively calculates a product of the pulse rate and the blood pressure in synchronism with the heartbeat of the person, a second calculating device which calculates a total energy produced by the person after application of the exercise load to the person is started and before the products successively calculated by the first calculating device increase up to a target value, and a display device which displays an evaluation value of the exercise function of the person based on the total energy calculated by the second calculating device.Type: GrantFiled: November 16, 1998Date of Patent: November 9, 1999Assignee: Colin CorporationInventor: Hideichi Tsuda
-
Patent number: 5964713Abstract: From a fluctuation of pulse periods of a subject continuously measured by a pulse period measuring device, a first pulse period fluctuation signal HFC.sub.RR which corresponds to a first pulse period fluctuation component produced in substantial synchronism with a respiration of the subject and a second pulse period fluctuation signal LFC.sub.RR which corresponds to a second pulse period fluctuation component having a predetermined frequency lower than a frequency of the first pulse period fluctuation component are extracted by a pulse period fluctuation signal extracting means. Then, based on a ratio (HFC.sub.RR /LFC.sub.RR) of the first pulse period fluctuation signal HFC.sub.RR to the second pulse period fluctuation signal LFC.sub.RR, an anesthetic depth of the subject is calculated by an anesthetic depth calculating means. Thus, the present apparatus can objectively or quantitatively calculate the anesthetic depth of the subject.Type: GrantFiled: October 28, 1998Date of Patent: October 12, 1999Assignee: Colin CorporationInventors: Takashi Nomura, Hideichi Tsuda
-
Patent number: 5906581Abstract: An apparatus for evaluating an exercise function of a person who undergoes an exercise load, including a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person, a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person, a first calculating device which successively calculates a product of the pulse rate and the blood pressure in synchronism with the heartbeat of the person, a second calculating device which calculates a total energy produced by the person after application of the exercise load to the person is started and before the products successively calculated by the first calculating device increase up to a target value, and a display device which displays an evaluation value of the exercise function of the person based on the total energy calculated by the second calculating device.Type: GrantFiled: December 19, 1996Date of Patent: May 25, 1999Assignee: Colin CorporationInventor: Hideichi Tsuda
-
Patent number: 5871450Abstract: From a fluctuation of pulse periods of a subject continuously measured by a pulse period measuring device, a first pulse period fluctuation signal HFC.sub.RR which corresponds to a first pulse period fluctuation component produced in substantial synchronism with a respiration of the subject and a second pulse period fluctuation signal LFC.sub.RR which corresponds to a second pulse period fluctuation component having a predetermined frequency lower than a frequency of the first pulse period fluctuation component are extracted by a pulse period fluctuation signal extracting means. Then, based on a ratio (HFC.sub.RR /LFC.sub.RR) of the first pulse period fluctuation signal HFC.sub.RR to the second pulse period fluctuation signal LFC.sub.RR, an anesthetic depth of the subject is calculated by an anesthetic depth calculating means. Thus, the present apparatus can objectively or quantitatively calculate the anesthetic depth of the subject.Type: GrantFiled: January 27, 1997Date of Patent: February 16, 1999Assignee: Colin CorporationInventors: Takashi Nomura, Hideichi Tsuda
-
Patent number: 5772601Abstract: An apparatus for evaluating a blood-ejecting function of a heart of a living subject, including a pressure pulse wave sensor which is adapted to be worn on a body portion of the subject to detect a pressure pulse wave which is produced from an artery of the subject in synchronism with a heartbeat of the subject, a first determining device for determining a first value of an index corresponding to a systolic area which is defined by a waveform of a first heartbeat-synchronous pulse of the pressure pulse wave detected by the pressure pulse wave sensor before the subject undergoes a physical exercise, a second determining device for determining a second value of the index corresponding to a systolic area which is defined by a waveform of a second heartbeat-synchronous pulse of the pressure pulse wave detected by the pressure pulse wave sensor after the subject undergoes the physical exercise, and an evaluating device for evaluating the blood-ejecting function of the heart of the subject, based on the determinedType: GrantFiled: August 26, 1996Date of Patent: June 30, 1998Assignee: Colin CorporationInventors: Tohru Oka, Hideichi Tsuda
-
Patent number: 5738612Abstract: An exercise apparatus including an exercise-load applying device which applies an exercise load to a person such as a patient, an exercise-load changing device which changes the exercise load applied to the person by the exercise-load applying device, a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person, a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person, a calculating device which successively calculates a product of the pulse rate and the blood pressure in synchronism with the heartbeat of the person, and a control device which controls the exercise-load changing device to change the exercise load applied to the person by the exercise-load applying device, so that the products successively calculated by the calculating device substantially coincide with a predetermined target value.Type: GrantFiled: December 4, 1996Date of Patent: April 14, 1998Assignee: Colin CorporationInventor: Hideichi Tsuda
-
Patent number: 5099853Abstract: It is desirable to minimize discomfort of a living body due to pressing by a blood pressure monitoring system of a type which monitors the blood pressure of the living body for a long period of time. The present invention is constituted by including pulse wave detecting device for detecting pulse waves of an arterial vessel of a living body, blood pressure measuring device for measuring an actual blood pressure of the living body, and control device for determining a relationship between the pulse waves detected by the pulse wave detecting device and the actual blood pressure measured by the blood pressure measuring device, determining blood pressures according to the thus-determined relationship and based on the pulse waves, and commanding a display to continuously display the thus-determined blood pressures thereon.Type: GrantFiled: May 2, 1988Date of Patent: March 31, 1992Assignee: Colin Electronics Co., Ltd.Inventors: Masahiro Uemura, Hideichi Tsuda, Hifumi Yokoe
-
Patent number: 5054495Abstract: An apparatus for automatically measuring a blood pressure of a subject, including a pressing device for pressing a body portion of the subject, such as an upper arm; a first blood pressure measuring device for detecting pulse sounds which are produced from the body portion as the pressing force of the pressing device is varied, and determining a first blood pressure (BP) value of the subject based on at least one of an appearance and a disappearance of the pulse sounds; a second blood pressure measuring device for detecting an oscillatory pressure wave which is produced from the body portion in synchronization with heartbeat of the subject as the pressing force of the pressing device is varied, and determining a second BP value of the subject based on variation in magnitude of the oscillatory pressure wave; and a judging device for judging at least one of the first and second blood pressures to be abnormal if a degree of inequality between the first and second blood pressures exceeds a reference value.Type: GrantFiled: July 10, 1989Date of Patent: October 8, 1991Assignee: Colin Electronics Co., Ltd.Inventors: Masahiro Uemura, Hideichi Tsuda, Hifumi Yokoe, Tokuji Hayakawa
-
Patent number: 4561447Abstract: An apparatus for detecting and displaying a pulse wave based on pulsations of an arterial vessel of a human body, with an improved accuracy irrespective of variations in pressing force of a sensing unit against a body member and/or irrespective of deviation of the depressed sensing unit from the arterial vessel to be detected, thereby providing the user of the apparatus with reliable medical diagnostic information on blood circulating organs.Type: GrantFiled: January 9, 1984Date of Patent: December 31, 1985Assignee: Nippon, Colin Co., Ltd.Inventors: Norio Kawamura, Hifumi Yokoe, Hideichi Tsuda