Patents by Inventor Toshiyuki Shinohara

Toshiyuki Shinohara 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: 7686758
    Abstract: The present invention provides an inflow cannula tip that is shaped to prevent suction with the ventricular wall and adapted to prevent platelet adhesion. In particular, the inlet portion of the cannula tip comprises two projections extending from the cylindrical body of the cannula tip with gaps between the projections. The projections may have beveled edges. The inlet portion of the cannula tip can accept blood flow from either the gaps in the side or from the bottom of the tip. Even if the edge of the cannula tip is close to or even touching ventricle wall, a suction condition will not result, as blood is allowed to flow through the gaps between the projections.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: March 30, 2010
    Assignees: HITMAC (USA), Inc., Baylor College of Medicine
    Inventors: Yukihiko Nosé, Toshiyuki Shinohara, Kuniyoshi Watanabe, Tadashi Motomura
  • Patent number: 7284956
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: October 23, 2007
    Assignees: Miwatec Co., Ltd., Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Publication number: 20070049787
    Abstract: The present invention provides an inflow cannula tip that is shaped to prevent suction with the ventricular wall and adapted to prevent platelet adhesion. In particular, the inlet portion of the cannula tip comprises two projections extending from the cylindrical body of the cannula tip with gaps between the projections. The projections may have beveled edges. The inlet portion of the cannula tip can accept blood flow from either the gaps in the side or from the bottom of the tip. Even if the edge of the cannula tip is close to or even touching ventricle wall, a suction condition will not result, as blood is allowed to flow through the gaps between the projections.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 1, 2007
    Applicants: Miwatec Co., Ltd., Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Tadashi Motomura
  • Patent number: 7156873
    Abstract: The present invention provides methods for detecting an abnormal condition of a blood pump system based on the power consumption of the pump actuator. By plotting differentiated power consumption of the pump actuator over time against the power consumption, a plot pattern is obtained. A change of the plot pattern area and/or a movement of the plot pattern will indicate a change in condition of the pump. A Heart Pump Area (HPA) index may be established which corresponds to the changing area of the plot pattern over time. A Heart Pump Position (HPP) index may be established which corresponds to the changing position of the plot pattern over time (e.g., corresponding to the distance the plot pattern has moved). By plotting the HPA index against the HPP index, changes in the condition of the pump can be monitored and any abnormal condition of the pump can be detected.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: January 2, 2007
    Assignees: Miwatec Co., Ltd., Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Fumiyuki Ichihashi
  • Patent number: 7093373
    Abstract: A displacement measuring instrument (1) has a spindle (25) penetrating a gauge body (11) to be slidably supported relative to the gauge body (11) to be displaced and a lifting lever (20) manipulated from the outside for forcibly shifting the spindle. A lever support (30) supporting an end opposite to a drive end (20A) of the lifting lever (20) that is in contact with the spindle (25) is supported by engaging a dovetail groove thereon with a projection of an engaging member (35) formed on the outer circumference of the gauge body (11).
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: August 22, 2006
    Assignee: Mitutoyo Corporation
    Inventors: Chikara Sugai, Toshiyuki Shinohara
  • Patent number: 6925727
    Abstract: Since a dial face (3) and an area indicator (4) are formed separately to be independently turnable, the area indicator (4) is not rotated even when the dial face (3) is rotated. With this arrangement, the area indicator (4) can indicate a correct area regardless of the rotated position of the dial face (3), thereby preventing measurement errors. Further, since the area indicator (4) is not included in the dial face (3), the dial face (3) can be shared as a standard dial face.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: August 9, 2005
    Assignee: Mitutoyo Corporation
    Inventors: Munenori Ishii, Toshiyuki Shinohara
  • Patent number: 6884210
    Abstract: It is an object of the present invention to realize a small and light blood pump that can control thrombosis and moreover, endure a prolonged use.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: April 26, 2005
    Assignees: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Seiji Ichikawa, Toshiyuki Shinohara
  • Patent number: 6817836
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: November 16, 2004
    Assignees: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Publication number: 20040200088
    Abstract: Since a dial face (3) and an area indicator (4) are formed separately to be independently turnable, the area indicator (4) is not rotated even when the dial face (3) is rotated. With this arrangement, the area indicator (4) can indicate a correct area regardless of the rotated position of the dial face (3), thereby preventing measurement errors. Further, since the area indicator (4) is not included in the dial face (3), the dial face (3) can be shared as a standard dial face.
    Type: Application
    Filed: April 7, 2004
    Publication date: October 14, 2004
    Applicant: MITUTOYO CORPORATION
    Inventors: Munenori Ishii, Toshiyuki Shinohara
  • Publication number: 20040181960
    Abstract: A displacement measuring instrument (1) has a spindle (25) penetrating a gauge body (11) to be slidably supported relative to the gauge body (11) to be displaced and a lifting lever (20) manipulated from the outside for forcibly shifting the spindle. A lever support (30) supporting an end opposite to a drive end (20A) of the lifting lever (20) that is in contact with the spindle (25) is supported by engaging a dovetail groove thereon with a projection of an engaging member (35) formed on the outer circumference of the gauge body (11).
    Type: Application
    Filed: March 11, 2004
    Publication date: September 23, 2004
    Applicant: MITUTOYO CORPORATION
    Inventors: Chikara Sugai, Toshiyuki Shinohara
  • Publication number: 20040133061
    Abstract: The present invention provides methods for detecting an abnormal condition of a blood pump system based on the power consumption of the pump actuator. By plotting differentiated power consumption of the pump actuator over time against the power consumption, a plot pattern is obtained. A change of the plot pattern area and/or a movement of the plot pattern will indicate a change in condition of the pump. A Heart Pump Area (HPA) index may be established which corresponds to the changing area of the plot pattern over time. A Heart Pump Position (HPP) index may be established which corresponds to the changing position of the plot pattern over time (e.g., corresponding to the distance the plot pattern has moved). By plotting the HPA index against the HPP index, changes in the condition of the pump can be monitored and any abnormal condition of the pump can be detected.
    Type: Application
    Filed: September 3, 2003
    Publication date: July 8, 2004
    Applicants: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Fumiyuki Ichihashi
  • Publication number: 20040122283
    Abstract: The present invention provides an inflow cannula tip that is shaped to prevent suction with the ventricular wall. In particular, the inlet portion of the cannula tip comprises two projections extending from the cylindrical body of the cannula tip with gaps between said projections. The projections may have beveled edges. The inlet portion of the cannula tip can accept blood flow from either the gaps in the side or from the bottom of the tip. Even if the edge of the cannula tip is close to or even touching ventricle wall, a suction condition will not result, as blood is allowed to flow through the gaps between the projections.
    Type: Application
    Filed: September 3, 2003
    Publication date: June 24, 2004
    Applicants: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe
  • Publication number: 20040047736
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 11, 2004
    Applicants: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Publication number: 20040047737
    Abstract: A control system for a continuous flow rotary blood pump is provided. A normal operating range of the blood pump is established. The normal operating range may comprise a normal pump flow range and a normal pressure head range. A target rotational speed of the pump is set in accordance with the normal operating range. A current operating condition of the blood pump is determined. The current operating condition may comprise a current pump flow, a current pressure head, and a current rotational speed of the pump. The current operating condition is compared with the normal operating range. An appropriate control algorithm is selected from a plurality of available control algorithms based on the comparison. The target rotational speed of the pump is adjusted using the selected control algorithm to maintain or recover the normal operating range.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 11, 2004
    Applicants: MIWATEC INCORPORATED, BAYLOR COLLEGE OF MEDICINE
    Inventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
  • Publication number: 20030233021
    Abstract: It is an object of the present invention to realize a small and light blood pump that can control thrombosis and moreover, endure a prolonged use.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 18, 2003
    Applicants: Miwatec Incorporated, Baylor College of Medicine
    Inventors: Yukihiko Nose, Seiji Ichikawa, Toshiyuki Shinohara
  • Patent number: 6497052
    Abstract: A dial gauge (1A) has stem bush (20) having a fitting (21) fitted to an inner wall of a stem (5) and having a predetermined clearance between a spindle (3), a holder (22) for slidably holding the spindle (3) while securing a predetermined clearance against the inner wall of the stem (5), and an elastically deformable connector (23) for connecting the fitting (21) and the holder (22), whereby an influence of deformation of the stem (5) and the fitting (21) on the holder (22) during clamping can be minimized, so that the dial gauge (1A) can be fixed to a supporting stand without deteriorating slidability of the spindle (3).
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: December 24, 2002
    Assignee: Mitutoyo Corporation
    Inventors: Yasunori Nishimura, Toru Fujimitsu, Mikio Suzuki, Toshiyuki Shinohara
  • Publication number: 20010022036
    Abstract: A dial gauge (1A) has stem bush (20) having a fitting (21) fitted to an inner wall of a stem (5) and having a predetermined clearance between a spindle (3), a holder (22) for slidably holding the spindle (3) while securing a predetermined clearance against the inner wall of the stem (5), and an elastically deformable connector (23) for connecting the fitting (21) and the holder (22), whereby an influence of deformation of the stem (5) and the fitting (21) on the holder (22) during clamping can be minimized, so that the dial gauge (1A) can be fixed to a supporting stand without deteriorating slidability of the spindle (3).
    Type: Application
    Filed: March 12, 2001
    Publication date: September 20, 2001
    Applicant: MITUTOYO CORPORATION
    Inventors: Yasunori Nishimura, Toru Fujimitsu, Mikio Suzuki, Toshiyuki Shinohara
  • Patent number: 6192755
    Abstract: A dial gauge case, which has a bottom and a peripheral wall surrounding the bottom, the bottom and the peripheral wall defining a recess for accommodating a dial gauge mechanism therein. The peripheral wall is provided with a pair of bearings for slidably supporting a spindle of the dial gauge. The peripheral wall and the pair bearings are formed together as a one-piece molding of a plastic material. With the peripheral wall and the bearings formed together as a one-piece molding, the number of dial gauge components can be reduced, and the operation of assembling the dial gauge is simplified.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: February 27, 2001
    Assignee: Mitutoyo Corporation
    Inventors: Munenori Ishii, Toshiyuki Shinohara
  • Patent number: 5960553
    Abstract: A conversion mechanism of a dial gauge is provided with a spindle having a measuring point on the top end, and a sector gear having an abutting portion abutting on an engaging portion provided on the spindle, in which a sliding movement of the spindle is converted into a turning movement of the sector gear through the engaging portion and the abutting portion, then the turning movement is converted into a turning amount of a pointer. In such conversion mechanism of the dial gauge, the sector gear is integrally molded with the metal abutting portion with a plastic material, and the pointer adjusting means is provided, which enables to change the turning angle of the pointer without changing the position in the sliding direction of the measuring point on the spindle. Since the sector gear is integrally built, the cost of parts can be decreased, and since the pointer adjusting means is provided, the measurement at the easy-to-read position on the dial plate can be materialized.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: October 5, 1999
    Assignee: Mitutoyo Corporation
    Inventors: Munenori Ishii, Toshiyuki Shinohara