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).
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Patent number: 7686758Abstract: 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: GrantFiled: September 25, 2006Date of Patent: March 30, 2010Assignees: HITMAC (USA), Inc., Baylor College of MedicineInventors: Yukihiko Nosé, Toshiyuki Shinohara, Kuniyoshi Watanabe, Tadashi Motomura
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Patent number: 7284956Abstract: 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: GrantFiled: November 8, 2002Date of Patent: October 23, 2007Assignees: Miwatec Co., Ltd., Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
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Publication number: 20070049787Abstract: 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: ApplicationFiled: September 25, 2006Publication date: March 1, 2007Applicants: Miwatec Co., Ltd., Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Tadashi Motomura
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Patent number: 7156873Abstract: 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: GrantFiled: September 3, 2003Date of Patent: January 2, 2007Assignees: Miwatec Co., Ltd., Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Fumiyuki Ichihashi
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Patent number: 7093373Abstract: 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: GrantFiled: March 11, 2004Date of Patent: August 22, 2006Assignee: Mitutoyo CorporationInventors: Chikara Sugai, Toshiyuki Shinohara
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Patent number: 6925727Abstract: 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: GrantFiled: April 7, 2004Date of Patent: August 9, 2005Assignee: Mitutoyo CorporationInventors: Munenori Ishii, Toshiyuki Shinohara
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Patent number: 6884210Abstract: 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: GrantFiled: June 12, 2002Date of Patent: April 26, 2005Assignees: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Seiji Ichikawa, Toshiyuki Shinohara
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Patent number: 6817836Abstract: 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: GrantFiled: September 10, 2002Date of Patent: November 16, 2004Assignees: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
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Publication number: 20040200088Abstract: 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: ApplicationFiled: April 7, 2004Publication date: October 14, 2004Applicant: MITUTOYO CORPORATIONInventors: Munenori Ishii, Toshiyuki Shinohara
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Publication number: 20040181960Abstract: 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: ApplicationFiled: March 11, 2004Publication date: September 23, 2004Applicant: MITUTOYO CORPORATIONInventors: Chikara Sugai, Toshiyuki Shinohara
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Publication number: 20040133061Abstract: 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: ApplicationFiled: September 3, 2003Publication date: July 8, 2004Applicants: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe, Fumiyuki Ichihashi
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Publication number: 20040122283Abstract: 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: ApplicationFiled: September 3, 2003Publication date: June 24, 2004Applicants: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Kuniyoshi Watanabe
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Publication number: 20040047736Abstract: 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: ApplicationFiled: September 10, 2002Publication date: March 11, 2004Applicants: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
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Publication number: 20040047737Abstract: 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: ApplicationFiled: November 8, 2002Publication date: March 11, 2004Applicants: MIWATEC INCORPORATED, BAYLOR COLLEGE OF MEDICINEInventors: Yukihiko Nose, Toshiyuki Shinohara, Ryo Kosaka, Hirohito Sumikura
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Publication number: 20030233021Abstract: 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: ApplicationFiled: June 12, 2002Publication date: December 18, 2003Applicants: Miwatec Incorporated, Baylor College of MedicineInventors: Yukihiko Nose, Seiji Ichikawa, Toshiyuki Shinohara
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Patent number: 6497052Abstract: 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: GrantFiled: March 12, 2001Date of Patent: December 24, 2002Assignee: Mitutoyo CorporationInventors: Yasunori Nishimura, Toru Fujimitsu, Mikio Suzuki, Toshiyuki Shinohara
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Publication number: 20010022036Abstract: 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: ApplicationFiled: March 12, 2001Publication date: September 20, 2001Applicant: MITUTOYO CORPORATIONInventors: Yasunori Nishimura, Toru Fujimitsu, Mikio Suzuki, Toshiyuki Shinohara
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Patent number: 6192755Abstract: 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: GrantFiled: September 22, 1997Date of Patent: February 27, 2001Assignee: Mitutoyo CorporationInventors: Munenori Ishii, Toshiyuki Shinohara
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Patent number: 5960553Abstract: 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: GrantFiled: October 3, 1997Date of Patent: October 5, 1999Assignee: Mitutoyo CorporationInventors: Munenori Ishii, Toshiyuki Shinohara