Patents by Inventor Peter Pihlstedt
Peter Pihlstedt 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: 8425448Abstract: This invention is directed to a method of collecting and separating whole blood into components. The method includes the steps of adding an anticoagulant having an acidic pH to a bag for collecting and/or separating whole blood, collecting whole blood in the bag, loading the bag containing anticoagulated whole blood on a rotor, spinning the bag on the rotor to separate the whole blood into at least one component; and squeezing the bag on the rotor to push the component from the separation bag into at least one satellite bag.Type: GrantFiled: January 30, 2007Date of Patent: April 23, 2013Assignee: Terumo BCT, Inc.Inventors: Thomas Felt, Peter Pihlstedt, Bruce Gibbs
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Patent number: 8236184Abstract: A method related to using a squeezing or transfer fluid to transfer fluid or components between bags in a centrifuge wherein the squeezing fluid can be reversed to reduce squeezing and such fluid an also be used to build up a over-pressure for rapid movement.Type: GrantFiled: October 31, 2007Date of Patent: August 7, 2012Assignee: Terumo BCT, Inc.Inventors: Brian M. Holmes, Peter Pihlstedt
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Patent number: 8173027Abstract: Method for separating a volume of composite liquid into at least a first component and a second component including centrifuging a separation bag containing a volume of composite liquid and a volume of gas so as to sediment at least a first component and a second component separation bag; displacing a volume of hydraulic fluid against the separation bag to cause a transfer of at least one fraction of the content of the separation bag into at least one component bag connected to the separation bag; determining the volume of hydraulic fluid displaced and determining the volume of the composite liquid or the transferred components from the determined volume of displaced hydraulic fluid.Type: GrantFiled: August 28, 2007Date of Patent: May 8, 2012Assignee: Terumo BCT, Inc.Inventors: Niclas Högberg, Brian M. Holmes, Briden Ray Stanton, Lars Persson, Lars Strandberg, Peter Pihlstedt
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Patent number: 7708889Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.Type: GrantFiled: January 26, 2009Date of Patent: May 4, 2010Assignee: CaridianBCT, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Patent number: 7648639Abstract: A method for separating a volume of a composite liquid into at least a first component and a second component is performed in a centrifuge cooperating with a separation bag containing the volume of composite liquid. The separation bag is connected to at least a first component bag and a second component bag. The separation bag is spun so as to centrifuge the volume of composite liquid and cause the sedimentation of the at least first and second components. When the at least first and second components have sedimented, the first component is transferred at least one first transfer flow rate into the first component bag. When the first component has been transferred into the first component bag, the second component is transferred into the intermediate component bag at least one second transfer flow rate that is different from the at least one first transfer flow rate.Type: GrantFiled: December 14, 2007Date of Patent: January 19, 2010Assignee: CaridianBCT, IncInventors: Brian M. Holmes, Peter Pihlstedt, Geert Van Waeg
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Publication number: 20090127206Abstract: A method used in connection with processing of blood components, wherein blood products are then filtered via a filter rotating along with a centrifuge rotor and the sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products.Type: ApplicationFiled: January 26, 2009Publication date: May 21, 2009Applicant: CARIDIANBCT, INC.Inventors: Niclas HOGBERG, Emanuel HALLGREN, Peter PIHLSTEDT, Brian M. HOLMES, Lars PERSSON, Lars STRANDBERG, Geert VAN WAEG, Frank CORBIN, III
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Patent number: 7497944Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: GrantFiled: March 27, 2007Date of Patent: March 3, 2009Assignee: CaridianBCT, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Publication number: 20080283473Abstract: A method and apparatus related to using a squeezing or transfer fluid to transfer fluid or components between bags in a centrifuge wherein the squeezing fluid can be reversed to reduce squeezing and such fluid an also be used to build up a over-pressure for rapid movement.Type: ApplicationFiled: October 31, 2007Publication date: November 20, 2008Applicant: GAMBRO BCT, INC.Inventors: Brian M. HOLMES, Peter PIHLSTEDT
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Publication number: 20080093312Abstract: A method for separating a volume of a composite liquid into at least a first component and a second component is performed in a centrifuge cooperating with a separation bag containing the volume of composite liquid. The separation bag is connected to at least a first component bag and a second component bag. The separation bag is spun so as to centrifuge the volume of composite liquid and cause the sedimentation of the at least first and second components. When the at least first and second components have sedimented, the first component is transferred at least one first transfer flow rate into the first component bag. When the first component has been transferred into the first component bag, the second component is transferred into the intermediate component bag at least one second transfer flow rate that is different from the at least one first transfer flow rate.Type: ApplicationFiled: December 14, 2007Publication date: April 24, 2008Applicant: GAMBRO BCT, INC.Inventors: Brian HOLMES, Peter PIHLSTEDT, Geert VAN WAEG
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Patent number: 7347932Abstract: A method for separating a volume of a composite liquid into at least a first component and a second component is performed in a centrifuge cooperating with a separation bag containing the volume of composite liquid. The separation bag is connected to at least a first component bag and a second component bag. The separation bag is spun so as to centrifuge the volume of composite liquid and cause the sedimentation of the at least first and second components. When the at least first and second components have sedimented, the first component is transferred at at least one first transfer flow rate into the first component bag. When the first component has been transferred into the first component bag, the second component is transferred into the intermediate component bag at at least one second transfer flow rate that is different from the at least one first transfer flow rate.Type: GrantFiled: February 20, 2004Date of Patent: March 25, 2008Assignee: Gambro BCT, Inc.Inventors: Brian M. Holmes, Peter Pihlstedt, Geert Van Waeg
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Publication number: 20080053203Abstract: Method and apparatus for separating a volume of composite liquid into at least a first component and a second component including centrifuging a separation bag containing a volume of composite liquid and a volume of gas so as to sediment at least a first component and a second component separation bag; displacing a volume of hydraulic fluid against the separation bag to cause a transfer of at least one fraction of the content of the separation bag into at least one component bag connected to the separation bag; determining the volume of hydraulic fluid displaced and determining the volume of the composite liquid or the transferred components from the determined volume of displaced hydraulic fluid.Type: ApplicationFiled: August 28, 2007Publication date: March 6, 2008Applicant: GAMBRO BCT, INC.Inventors: Niclas HOGBERG, Brian M. HOLMES, Briden Ray STANTON, Lars Persson, Lars Strandberg, Peter Pihlstedt
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Publication number: 20070255505Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: ApplicationFiled: March 27, 2007Publication date: November 1, 2007Inventors: Niclas Hogberg, Emanuel Hallgren, Peter Pihlstedt, Brian Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin
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Patent number: 7279107Abstract: A system and method are used in connection with processing of blood components. The processing of blood components may involve centrifugal separation and/or filtering of the blood components. In some examples, at least some blood components are centrifugally separated in a chamber and then filtered via a filter rotating along with a centrifuge rotor, wherein the filter is located closer than the chamber to an axis of rotation of the rotor. The filter may include a porous filtration medium configured to filter leukocytes, platelets, and/or red blood cells. Some examples include a pressure sensor sensing pressure of pumped blood components. The sensed pressure may be used in connection with controlling the pumping of the blood products and/or in connection with determining the location of an interface associated with the blood products. Other uses of the sensed pressure are also possible.Type: GrantFiled: April 16, 2003Date of Patent: October 9, 2007Assignee: Gambro, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt, Brian M. Holmes, Lars Persson, Lars Strandberg, Geert Van Waeg, Frank Corbin, III
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Publication number: 20070179423Abstract: This invention is directed to a method of collecting and separating whole blood into components. The method includes the steps of adding an anticoagulant having an acidic pH to a bag for collecting and/or separating whole blood, collecting whole blood in the bag, loading the bag containing anticoagulated whole blood on a rotor, spinning the bag on the rotor to separate the whole blood into at least one component; and squeezing the bag on the rotor to push the component from the separation bag into at least one satellite bag.Type: ApplicationFiled: January 30, 2007Publication date: August 2, 2007Applicant: GAMBRO BCT, INC.Inventors: Thomas FELT, Bruce GIBBS, Peter PIHLSTEDT
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Patent number: 7235041Abstract: A centrifuge for processing blood and blood components in a processing bag connected to at least one secondary bag comprises a rotor for spinning a processing bag and separating a content thereof in at least two components, and a squeezing member for exposing a processing bag to an external pressure and causing a transfer of a separated component from a processing bag into a secondary bag. Electrically powered devices, such as valves and photocells, are mounted on the rotor for controlling a transfer of fluid from a processing bag into a secondary bag. An electrical power supply system supplies the electrically powered devices with electrical power through the rotor.Type: GrantFiled: August 1, 2006Date of Patent: June 26, 2007Assignee: Gambro BCT, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt
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Publication number: 20060270542Abstract: A centrifuge for processing blood and blood components in a processing bag connected to at least one secondary bag comprises a rotor for spinning a processing bag and separating a content thereof in at least two components, and a squeezing member for exposing a processing bag to an external pressure and causing a transfer of a separated component from a processing bag into a secondary bag. Electrically powered devices, such as valves and photocells, are mounted on the rotor for controlling a transfer of fluid from a processing bag into a secondary bag. An electrical power supply system supplies the electrically powered devices with electrical power through the rotor.Type: ApplicationFiled: August 1, 2006Publication date: November 30, 2006Applicant: GAMBRO, INC.Inventors: Niclas HOGBERG, Emanuel HALLGREN, Peter PIHLSTEDT
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Patent number: 7097774Abstract: The claimed invention refers to a centrifuge intended for processing blood and blood components and with its function based on the effective utilisation of ring type blood processing bags with associated secondary bags and other accessories. The most outstanding feature of the centrifuge, in accordance with the claimed invention, is that its rotor, at the same intended height of the ring bag (22) inner periphery, shows at least three supports (9–11) arranged along this periphery and intended to locate the ring bag's inner strengthened periphery edge on guide holes at the same time as the centrifuge and its rotor is equipped with a joint rotating inner lid (6) which includes a clamp function (7) that clamps ring bag (22) securely along and between supports (9–11).Type: GrantFiled: July 24, 2003Date of Patent: August 29, 2006Assignee: Gambro IncInventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt
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Publication number: 20050045567Abstract: A method for separating a volume of a composite liquid into at least a first component and a second component is performed in a centrifuge cooperating with a separation bag containing the volume of composite liquid. The separation bag is connected to at least a first component bag and a second component bag. The separation bag is spun so as to centrifuge the volume of composite liquid and cause the sedimentation of the at least first and second components. When the at least first and second components have sedimented, the first component is transferred at at least one first transfer flow rate into the first component bag. When the first component has been transferred into the first component bag, the second component is transferred into the intermediate component bag at at least one second transfer flow rate that is different from the at least one first transfer flow rate.Type: ApplicationFiled: February 20, 2004Publication date: March 3, 2005Inventors: Brian Holmes, Peter Pihlstedt, Geert Waeg
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Publication number: 20040162209Abstract: The claimed invention refers to a centrifuge intended for processing blood and blood components and with its function based on the effective utilisation of ring type blood processing bags with associated secondary bags and other accessories. The most outstanding feature of the centrifuge, in accordance with the claimed invention, is that its rotor, at the same intended height of the ring bag (22) inner periphery, shows at least three supports (9-11) arranged along this periphery and intended to locate the ring bag's inner strengthened periphery edge on guide holes at the same time as the centrifuge and its rotor is equipped with a joint rotating inner lid (6) which includes a clamp function (7) that clamps ring bag (22) securely along and between supports (9-11).Type: ApplicationFiled: July 24, 2003Publication date: August 19, 2004Applicant: Gambro, Inc.Inventors: Niclas Hogberg, Emanuel Hallgren, Peter Pihlstedt
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Patent number: 6740239Abstract: The claimed invention relates to a method and a device for processing blood concentrate products before they are exposed to a continued process for extracting those remaining medicinally interesting sub-components. The appropriate pre-processing, in relation to the invention, primarily entails a mechanically powered resolution of the viscous flowing concentrate products in a diluting solution for the adaptation of the total products for a renewed centrifuging. The device includes a centrifuge machine containing one or more suspended product bags that can be oscillated forwards and backwards in an incomplete pendulum swing by operation of a motor mounted in a lid of the machine. The product bag(s) are connected to a ring bag for subsequent processing and to a bag containing diluting solution by a multi-way connector.Type: GrantFiled: November 30, 2001Date of Patent: May 25, 2004Assignee: Gambro, Inc.Inventors: Niclas Högberg, Emanuel Hällgren, Peter Pihlstedt