Patents by Inventor Hidehiro Hosaka

Hidehiro Hosaka 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: 6004263
    Abstract: An eyepiece optical system, an illuminating lamp, and a battery 2 are housed in an operation unit 2. An insertion unit in which an image transmitting optical fiber bundle and an illumination light transmitting optical fiber bundle are incorporated is detachably coupled with the operation unit through a coupling unit. The insertion unit is bent using a bending wire attached to the distal end thereof and coupled to the operation unit by a wire operating mechanism. An anti-clouding material can be disposed on a surface of the distal end of the insertion unit to protect it against clouding.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: December 21, 1999
    Assignee: Hihon Kohden Corporation
    Inventors: Katsumi Nakaichi, Shinji Yamamori, Hironori Kuroyone, Norio Ishikawa, Kohei Ono, Hidehiro Hosaka
  • Patent number: 5984854
    Abstract: A method for treating urinary incontinence which consists of delivering a train of current pulses through one or more magnetic stimulation coils to induce a train of magnetic flux pulses, which then induce an eddy current within the body, thereby to stimulate a group of pelvic floor muscles, the pudendal nerve, the external urethral sphincter, or the tibial nerve.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: November 16, 1999
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Shin Suda, Hidehiro Hosaka
  • Patent number: 5906208
    Abstract: The apparatus has: electrodes (E.sub.1 to E.sub.6) which are to be attached to a predetermined region of a living body; a skin potential measuring unit (1) which detects the skin potential from the electrodes; a judging unit (3) which detects and stores the skin potential before administration of an anesthetic agent, which detects and stores that after administration of the anesthetic agent, which sets a threshold to be an arbitrary level, on the basis of a change from the stored skin potential before administration of the anesthetic agent to the stored skin potential after administration of the anesthetic agent, and which compares the time-varying skin potential with the threshold, thereby judging the depth of anesthesia; and an alarm unit (6) which raises an alarm in accordance with instructions from the judging unit.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: May 25, 1999
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Kohei Ono, Katsumi Nakaichi, Shin Suda, Hidehiro Hosaka, Ryoichi Ochiai
  • Patent number: 5883691
    Abstract: Light sources illuminate eyes in a predetermined cycle using the pulse of light. Video cameras are directed to the eyes, and a video signal of the pupil is output. This video signal is output to a digital computer via video control units, a multiplexer, and an analog-to-digital converter. The digital computer detects the size of the pupil by processing an input video signal.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: March 16, 1999
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Hidehiro Hosaka, Shigeaki Sonoda
  • Patent number: 5822033
    Abstract: A CCD camera is supported by a guide rail in such a manner that the camera is be reciprocally movable in the direction toward an opening of a left main unit. When a motor is rotated, the rotation is transmitted to a rack via gears, thereby moving the CCD camera.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: October 13, 1998
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Hidehiro Hosaka
  • Patent number: 5728585
    Abstract: A capnometer is disclosed with a light sourse for irradiating a respirtory gas, a thermal detector for sensing the transmission of the infrared radiation, a switch device for turning the radiation source on and off in a predetermined period, a memory device for storing output from the thermal deterctor, and a control device for picking up a maximum value of the detection signal from the thermal detector for the present inspiration phase. The maximum value is stored in the memory device and the difference is calculated between a subsequently issued detection signal and the stored maximum value to compensate for drift that has occurred in the thermal detector.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: March 17, 1998
    Assignee: Nihon Kohden Corporation
    Inventors: Shinji Yamamori, Hidehiro Hosaka, Kohei Ono, Masami Ito, Masayuki Inoue, Masaki Sugiura
  • Patent number: 5704367
    Abstract: A respiration monitor of the invention includes: an infrared camera for forming an image of a face; an operation section for selecting an imaging temperature to be set for the infrared camera out of a predetermined temperature range and setting the selected imaging temperature; an image memory for storing a facial image signal outputted from the infrared camera; a control section for defining a facial region in the facial image signal, binarizing the facial image signal within the facial region, calculating and outputting a respiratory waveform signal from a change in an area of the facial region every inspiration, and outputting an alarm by judging an apnea when a condition in which there is no change in the area of the facial region lasts for a predetermined time; an alarm section for generating an alarm out of the alarm signal; a synthesis section For synthesizing the facial image signal with the respiratory waveform signal; and a display apparatus for inputting the facial image signal and the respiratory
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: January 6, 1998
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Hidehiro Hosaka, Ryoichi Ochiai
  • Patent number: 5649543
    Abstract: A pulse-wave propagation time basis blood pressure monitor includes a memory for storing an equation describing the relationship between the pulse wave propagation time and the parameter .alpha., input means for entering the blood pressure value for calibration, a time-interval detect reference point detecting means for detecting a reference point for detecting the time interval of a pulse wave in the aorta of a subject; pulse wave detecting means for detecting a pulse wave which appears in the peripheral blood vessel after it appears in the aorta; pulse-wave propagation time measuring section for measuring a pulse wave propagation time from the output signals of the time-interval detect reference point detecting means and the pulse wave detecting means, first computing means for determining the parameter .alpha.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 22, 1997
    Assignee: Nihon Kohden Corporation
    Inventors: Hidehiro Hosaka, Hiroshi Sakata, Yoshihiro Sugo, Takeshi Sohma, Hiromitsu Kasuya
  • Patent number: 5640221
    Abstract: A housing has a hollow section, and openings are formed at both ends of the hollow section so as to communicate with the outside. An aperture is formed in the internal wall of the housing so as to oppose the opening, and a video camera is fitted into the opening. A half mirror, a mirror, an optical lens, and light sources are disposed within the hollow section. The light sources are alternately illuminated while a patient wears equipment having such a construction. Light reflected from one eye passes through the half mirror and enters a light receiving surface of the video camera. On the other hand, light reflected from the other eye is reflected from the mirror and a half mirror and, then, enters the light receiving surface of the video camera. The optical lens corrects an error arising from a difference in length between two optical paths.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: June 17, 1997
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Hidehiro Hosaka, Katsumi Nakaichi
  • Patent number: 5614967
    Abstract: An eye movement analysis system illuminates the surface of each eye, and calculates the movement of the eye from the image of the eye including the pupil and iris striation. The eye movement analysis system is made up of an image signal processor including a controller which calculates the movement of the eye as well as the respective positions of the center of the eye and the iris striation from the image of the eye and a RAM which holds the respective positions of the center of the eye and the iris striation, a display which displays the iris striation in different states before and after the positional analysis, and an operating section which stops changing the frame if the currently displayed iris striation is different from the previously specified iris striation.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 25, 1997
    Assignee: Nihon Kohden Corporation
    Inventors: Norio Ishikawa, Hidehiro Hosaka
  • Patent number: 5603329
    Abstract: The multi-functional blood pressure monitor includes input unit for entering a value of blood pressure for calibration; unit for detecting a time interval detection reference point on an aortic pulse wave, unit for detecting a peripheral blood pulse wave as it appears later than the aortic pulse wave, unit (CPU) for measuring the pulse wave propagation time on the basis of the detection outputs from the unit for detecting a time interval detection reference point and the unit for detecting a peripheral blood pulse wave, first computing unit (CPU) for computing the values of parameters .alpha. and .beta. using the two values of blood pressure that have been entered for calibration and the two pulse wave propagation times that have been measured for calibration, second computing unit (CPU) for computing blood pressure from a measured pulse wave propagation time and the values of parameters .alpha. and .beta., and display for presenting both the computed blood pressure and the value of parameter .alpha.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: February 18, 1997
    Assignee: Nihon Kohden Corporation
    Inventors: Hidehiro Hosaka, Takashi Nakaya, Yoshihiro Sugo, Hiromitsu Kasuya, Rie Tanaka
  • Patent number: 5564427
    Abstract: A blood pressure monitoring system includes a blood pressure measurement device for measuring blood pressure using a cuff, a memory for storing an externally inputted pulse wave propagation time fluctuation threshold, a time interval detection reference point detection section for detecting a time interval detection reference point in a pulse wave on the side of aortae of a living organism, a pulse wave detection section for detecting a pulse wave on the side of peripheral blood vessels appearing with a time lag with respect to the pulse wave on the side of aortae, a pulse wave propagation time measurement section for measuring a pulse wave propagation time based on respective detected outputs from the time interval detection reference point detection section and the pulse wave detection section, an operation device for calculating a pulse wave propagation fluctuation from two measured pulse wave propagation times, a judgment device for judging whether or not the calculated pulse wave propagation time fluctua
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: October 15, 1996
    Assignee: Nihon Kohden Corporation
    Inventors: Shigeru Aso, Hiroshi Sakata, Yoshihiro Sugo, Hidehiro Hosaka
  • Patent number: 5467768
    Abstract: A multi-purpose sensor a single unit is capable of measuring both electric signals from the object and pressures at the same time and which yet is compact, lightweight and cheap enough to be used as a disposable product. Element in a disk form that is composed of carbon fibers superposed in layers at low density to produce a felt-like texture is surrounded with concentric cylindrical holder. Terminal is connected to an end face of each of element and holder whereas terminal is connected to the other end face, whereby the deformation of element due to an externally applied force is picked up as a voltage change.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: November 21, 1995
    Assignee: Nihon Koden Corporation
    Inventors: Shin Suda, Hidehiro Hosaka
  • Patent number: 5383468
    Abstract: A cardiac output and right ventricular ejection fraction computer comprises a catheter, having an indicator injection port which is located at the right ventricular, inserted into an intravascular of a patient and retained therein; thermal detector device, mounted on a distal portion of the catheter, for detecting the temperature of blood ejected from the right ventricle; signal processor device for calculating the right ventricular ejection fraction from a thermodilution curve obtained by detecting variation of the blood temperature measured by the thermal detector device when a indicator is injected into the right ventricular through the catheter; data input device for inputting data to the signal processor device.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: January 24, 1995
    Assignee: Nihon Kohden Corporation
    Inventors: Tadashi Nakayama, Kohei Ono, Shinji Yamamori, Hidehiro Hosaka, Yoji Sato, Shiniti Shioya, Takasuke Imai
  • Patent number: 5179620
    Abstract: A needle type lens structure comprises, an inner tube having a relay lens inserted therein, an outer tube mounted around an outer periphery of the inner tube in concentric relation thereto with a predetermined gap, and light transmitting device, for guiding illumination light to the distal end of the needle type lens, provided axially between the inner tube and the outer tube.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: January 12, 1993
    Assignee: Nihon Kohden Corporation
    Inventors: Hidehiro Hosaka, Kohei Ono, Shinji Yamamori, Tadashi Nakayama, Yoji Sato, Hideya Katayama