Patents by Inventor Yukihiko Nose
Yukihiko Nose 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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Publication number: 20110197628Abstract: Various embodiments of the present invention disclose processes and systems for the off-line in-vitro purification of plasma harvested from a patient. In an embodiment of a process, in a first step cellular components are capable of being eliminated by membrane plasma separation at temperatures sufficiently high to avoid formation of a cryoaggregates, and in a second step the resulting plasma solution is cooled to a temperature that allows the formation of cryoaggragated molecules, but no formation of a cryogel.Type: ApplicationFiled: January 26, 2009Publication date: August 18, 2011Applicant: Baylor College of MedicineInventors: Yukihiko Nose, Toshiya Okahisa, Hiroshi Miyamoto, Tadashi Motomura
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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: 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: 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: 6183220Abstract: The present invention provides a blood pump capable of substantially completely preventing thrombus from attaching to the inner bottom portion of the casing without lowering the anti-hemolytic characteristic of blood. A centrifugal blood pump in accordance with the present invention comprises a pump casing, a suction inlet disposed at the central portion on the upper side of the casing, a delivery outlet disposed at the bottom peripheral portion of the casing, a main impeller (D in diameter) for forming a centrifugal flow of blood supplied from the suction inlet in the range from the central portion to the peripheral portion to feed the blood to the delivery outlet, wherein the main impeller is provided with an stirring impeller, the surface of which is provided with one or more stirring elements (L in entire length) having the shape of a fin or a groove, and the dimensions of the stirring elements are determined to satisfy inequality (1): 0.43<LD<1.30 and inequality (2) 0.03<S/A<0.Type: GrantFiled: February 26, 1999Date of Patent: February 6, 2001Assignees: Kyocera Corporation, Baylor College of MedicineInventors: Yasuhisa Ohara, Yoshiyuki Takami, Goro Otsuka, Yukihiko Nose, Kenzo Makinouchi, Michihiro Yokokawa
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Patent number: 5803720Abstract: A centrifugal blood pump used for heart-lung machines or the like comprising an impeller provided with pump vanes and a magnet means such as permanent magnets, a casing having an inlet port and an outlet port and rotatably accommodating the impeller, and a magnet drive means disposed outside the casing, wherein the impeller is supported by at least three balls above the bottom plate of the casing, held at the center of the bottom plate and rotated around the center axis of the impeller by the magnet means and the magnet drive means. When the upper and lower ends of the rotation shaft of the impeller are supported by the casing, the upper end of the rotation shaft is supported by a bearing embeddedly disposed at the top section of the conical section of the casing, and the inlet port of the casing is disposed adjacent to and eccentric from the top section.Type: GrantFiled: October 30, 1996Date of Patent: September 8, 1998Assignees: Kyocera Corporation, Baylor College of MedicineInventors: Yasuhisa Ohara, Kenzo Makinouchi, Yukihiko Nose
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Patent number: 5713730Abstract: A centrifugal blood pump, used for heart-lung machines or the like, having at least one impeller, a casing having an inlet and an outlet, the casing formed to have a space for rotatably housing the at least one impeller and a magnetic drive disposed outside the casing. The impeller may have vanes attached thereto for forcing fluid through the casing. Further the vanes may have magnets imbedded therein. The magnetic drive and the imbedded magnets cooperate to rotate the impeller. The impeller may have pivots integrated at opposing ends for allowing the impeller to rotate about a horizontal axis. The pivots may be supported by pivot bearings disposed within the casing. The pivots and the pivot bearings may be made of a ceramic material.Type: GrantFiled: May 2, 1995Date of Patent: February 3, 1998Assignees: Kyocera Corporation, Baylor College of MedicineInventors: Yukihiko Nose, Setsuo Takatani, Ichiro Sakuma, Yasuhisa Ohara, Kenzo Makinouchi
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Patent number: 5683231Abstract: A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such as a conical shape, is equipped with vanes having a pumping function on the side surface thereof and is also equipped with magnets, such as permanent magnets. The magnetic driver for rotating the impeller in cooperation with the magnets comprises a magnet assembly magnetically connected to the magnets and a rotation driver for rotating the magnet assembly. The magnetic attraction force adjuster adjusts the magnetic attraction force generated between the magnets and the magnet assembly by adjusting the gap between the magnets and the magnet assembly or by adjusting the exciting current of electromagnets when electromagnets are used for the magnet assembly.Type: GrantFiled: July 3, 1996Date of Patent: November 4, 1997Assignee: Kyocera CorporationInventors: Tadashi Nakazawa, Yoshiyuki Takami, Kenzo Makinouchi, Yukihiko Nose
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Patent number: 5601418Abstract: A centrifugal blood pump for heart-lung machines or the like. An impeller is provided with pump vanes and a magnet. The impeller is rotatably accommodated in a casing having an inlet and an outlet. A magnet drive means is disposed outside the casing. The impeller is supported by at least three balls above a bottom plate of the casing, held at the center of the bottom plate and rotated around the center axis of the impeller by the magnet means and the magnet drive means. When the upper and lower ends of the rotation shaft of the impeller are supported by the casing, the upper end of the rotation shaft is supported by a bearing embeddedly disposed at the top section of the conical section of the casing, and the inlet of the casing is disposed adjacent to and eccentric from the top section.Type: GrantFiled: June 8, 1995Date of Patent: February 11, 1997Assignees: Kyocera Corporation, Baylor College of MedicineInventors: Yasuhisa Ohara, Kenzo Makinouchi, Yukihiko Nose
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Patent number: 5575630Abstract: A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such as a conical shape, is equipped with vanes having a pumping function on the side surface thereof and is also equipped with magnets, such as permanent magnets. The magnetic driver for rotating the impeller in cooperation with the magnets comprises a magnet assembly magnetically connected to the magnets and a rotation driver for rotating the magnet assembly. The magnetic attraction force adjuster adjusts the magnetic attraction force generated between the magnets and the magnet assembly by adjusting the gap between the magnets and the magnet assembly or by adjusting the exciting current of electromagnets when electromagnets are used for the magnet assembly.Type: GrantFiled: August 8, 1995Date of Patent: November 19, 1996Assignees: Kyocera Corporation, Baylor College of MedicineInventors: Tadashi Nakazawa, Yoshiyuki Takami, Kenzo Makinouchi, Yukihiko Nose
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Patent number: 5399145Abstract: A novel cardiac assist blood pump is disclosed. The blood pump comprises a pump chamber, a pressurizing chamber provided adjacent to the pump chamber, a rotor chamber provided adjacent to the pressurizing chamber and an impelled positioned in the pump chamber, said pump being characterized in that the rotation shaft of the impeller means is provided with a first seal member having a skirt portion which is made of an elastomeric material and extends downward to cover the clearance between the rotation shaft and the first rotation shaft hole provided between the pump chamber and the pressurizing chamber and a second seal member similar to the first one which covers the clearance between the rotation shaft and the second rotation shaft hole provided between the pressurizing chamber and the rotor chamber; and tile pressurizing liquid is forced into the pressurizing chamber.Type: GrantFiled: August 19, 1993Date of Patent: March 21, 1995Assignee: Nikkiso Company LimitedInventors: Kazuyuki Ito, Michiharu Nakao, Takeshi Aizawa, Yukihiko Nose
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Patent number: 5399074Abstract: A centrifugal blood pump, used for heart-lung machines or the like, comprises an impeller, a casing having a suction inlet and a delivery outlet and being equipped with a space for rotatably accommodating the impeller, and a magnetic drive means disposed outside the casing. The impeller is of a rotationally symmetric shape and has a rotary vane section and a cylindrical section equipped with a magnet means. The magnet drive means for generating a rotating magnetic field coaxially encloses the magnet means of the above-mentioned cylindrical section and rotates the impeller in cooperation with the magnet means. At least the end section of the impeller's rotation center on the rotary vane section side is supported preferably by a pivot bearing. The pivot and the bearing thereof are preferably made of ceramics.Type: GrantFiled: September 4, 1992Date of Patent: March 21, 1995Assignee: Kyocera CorporationInventors: Yukihiko Nose, Setsuo Takatani, Ichiro Sakuma