Patents by Inventor Susanne Wuerl
Susanne Wuerl 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: 9221051Abstract: A microfluidic element for analysis of a fluid sample having a substrate and a microfluidic transport system having a channel structure enclosed by the substrate and a covering layer. The channel structure comprises a channel with two side walls as well as a chamber that is in fluid communication with the channel. The chamber has a chamber wall with an inlet orifice. The channel comprises a channel section and a valve section adjoining the channel section, wherein the valve section is in fluid communication with the inlet orifice in the chamber wall in such a way that a fluid can flow from the channel through the valve section and into the chamber. The valve section has a fluid transport cross-section, which enlarges in flow direction. The fluid transport cross-section in the valve section is greater than the fluid transport cross-section in the preceding channel section.Type: GrantFiled: April 29, 2013Date of Patent: December 29, 2015Assignee: Roche Diagnostics Operations, Inc.Inventors: Christoph Boehm, Susanne Wuerl
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Patent number: 9186671Abstract: A microfluidic test carrier having a substrate, covering layer, and capillary structure formed in the substrate is provided. The capillary structure is enclosed by the substrate and covering layer and comprises a receiving chamber, sample chamber and connection channel between the receiving and sample chambers. The receiving chamber has two boundary surfaces and a side wall, wherein one boundary surface forms the bottom and the other forms the cover. The receiving chamber has a surrounding venting channel and dam between the receiving chamber and venting channel. The dam and venting channel form a capillary stop configured as a geometric valve, through which air from the receiving chamber can escape into the venting channel. The connecting channel between the venting channel outflow and sample chamber inflow controls fluid transport from the receiving chamber into the sample chamber. The capillary stop is configured to prevent autonomous fluid transport from the receiving chamber.Type: GrantFiled: April 26, 2013Date of Patent: November 17, 2015Assignee: Roche Diagnostics Operations, Inc.Inventors: Manfred Augstein, Christoph Boehm, Susanne Wuerl
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Patent number: 9151750Abstract: Method and system for carrying out heterogeneous chemical or biological reactions are disclosed. The method comprising providing an analytical device having at least one liquid processing unit having at least one reaction chamber and a first inlet channel in fluid communication with the reaction chamber. The method further comprises supplying to the reaction chamber via the first inlet channel or a second inlet channel analyte capturing particles, supplying to the reaction chamber via the first inlet channel or the second inlet channel a liquid sample containing an analyte of interest, and confining by an equilibrium of forces the analyte capturing particles in a particle rearrangement zone within the reaction chamber. The forces comprise a drag force Fd generated by flowing liquids and a counter-oriented force Fg. The method also comprises capturing analytes present in the liquid sample with the particles in the particle rearrangement zone.Type: GrantFiled: March 2, 2012Date of Patent: October 6, 2015Assignee: Roche Diagnostics Operations, Inc.Inventors: Christoph Boehm, Brigitte Niederberger, Rijk Edwin Oosterbroek, Susanne Wuerl
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Patent number: 8911684Abstract: A microfluidic element for analyzing a bodily fluid sample for an analyte contained therein is provided, the element having a substrate, a channel structure that is enclosed by the substrate, and a cover layer, and is rotatable around a rotational axis. The channel structure of the microfluidic element includes a feed channel having a feed opening, a ventilation channel having a ventilation opening, and at least two reagent chambers. The reagent chambers are connected to one another via two connection channels in such a manner that a fluid exchange is possible between the reagent chambers, one of the reagent chambers having an inlet opening, which has a fluid connection to the feed channel, so that a liquid sample can flow into the rotational-axis-distal reagent chamber. At least one of the reagent chambers contains a reagent, which reacts with the liquid sample.Type: GrantFiled: June 4, 2012Date of Patent: December 16, 2014Assignee: Roche Diagnostics Operations, Inc.Inventors: Manfred Augstein, Christoph Boehm, Carlo Effenhauser, Rijk Edwin Oosterbroek, Susanne Wuerl
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Patent number: 8790932Abstract: A method for providing a dried reagent in a microfluidic system is provided, the method comprising the following steps: providing a microfluidic system having a microfluidic structure, introducing a flowable carrier medium containing a reagent in the microfluidic structure, and drying the reagent in the microfluidic structure by lyophilization.Type: GrantFiled: October 5, 2009Date of Patent: July 29, 2014Assignee: Roche Diagnostics Operations, Inc.Inventors: Manfred Augstein, Romi Roedl, Susanne Wuerl, Valerie Winckler-Desprez
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Publication number: 20130243664Abstract: A microfluidic element for analysis of a fluid sample having a substrate and a microfluidic transport system having a channel structure enclosed by the substrate and a covering layer. The channel structure comprises a channel with two side walls as well as a chamber that is in fluid communication with the channel. The chamber has a chamber wall with an inlet orifice. The channel comprises a channel section and a valve section adjoining the channel section, wherein the valve section is in fluid communication with the inlet orifice in the chamber wall in such a way that a fluid can flow from the channel through the valve section and into the chamber. The valve section has a fluid transport cross-section, which enlarges in flow direction. The fluid transport cross-section in the valve section is greater than the fluid transport cross-section in the preceding channel section.Type: ApplicationFiled: April 29, 2013Publication date: September 19, 2013Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Christoph Boehm, Susanne Wuerl
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Publication number: 20130236376Abstract: A microfluidic test carrier having a substrate, covering layer, and capillary structure formed in the substrate is provided. The capillary structure is enclosed by the substrate and covering layer and comprises a receiving chamber, sample chamber and connection channel between the receiving and sample chambers. The receiving chamber has two boundary surfaces and a side wall, wherein one boundary surface forms the bottom and the other forms the cover. The receiving chamber has a surrounding venting channel and dam between the receiving chamber and venting channel. The dam and venting channel form a capillary stop configured as a geometric valve, through which air from the receiving chamber can escape into the venting channel. The connecting channel between the venting channel outflow and sample chamber inflow controls fluid transport from the receiving chamber into the sample chamber. The capillary stop is configured to prevent autonomous fluid transport from the receiving chamber.Type: ApplicationFiled: April 26, 2013Publication date: September 12, 2013Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Manfred Augstein, Christoph Boehm, Susanne Wuerl
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Publication number: 20130004964Abstract: Method and system for carrying out heterogeneous chemical or biological reactions are disclosed. The method comprising providing an analytical device having at least one liquid processing unit having at least one reaction chamber and a first inlet channel in fluid communication with the reaction chamber. The method further comprises supplying to the reaction chamber via the first inlet channel or a second inlet channel analyte capturing particles, supplying to the reaction chamber via the first inlet channel or the second inlet channel a liquid sample containing an analyte of interest, and confining by an equilibrium of forces the analyte capturing particles in a particle rearrangement zone within the reaction chamber. The forces comprise a drag force Fd generated by flowing liquids and a counter-oriented force Fg. The method also comprises capturing analytes present in the liquid sample with the particles in the particle rearrangement zone.Type: ApplicationFiled: March 2, 2012Publication date: January 3, 2013Applicant: Roche Diagnostics Operations,Inc.Inventors: Christoph Boehm, Brigitte Niederberger, Rijk Edwin Oosterbroek, Susanne Wuerl
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Publication number: 20120301371Abstract: A microfluidic element for analyzing a bodily fluid sample for an analyte contained therein is provided, the element having a substrate, a channel structure that is enclosed by the substrate, and a cover layer, and is rotatable around a rotational axis. The channel structure of the microfluidic element includes a feed channel having a feed opening, a ventilation channel having a ventilation opening, and at least two reagent chambers. The reagent chambers are connected to one another via two connection channels in such a manner that a fluid exchange is possible between the reagent chambers, one of the reagent chambers having an inlet opening, which has a fluid connection to the feed channel, so that a liquid sample can flow into the rotational-axis-distal reagent chamber. At least one of the reagent chambers contains a reagent, which reacts with the liquid sample.Type: ApplicationFiled: June 4, 2012Publication date: November 29, 2012Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Manfred Augstein, Christoph Boehm, Carlo Effenhauser, Rijk Edwin Oosterbroek, Susanne Wuerl
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Publication number: 20110183432Abstract: Embodiments disclosed herein include an analysis system for the analysis of a body fluid sample for an analyte contained therein, comprising a test element and an evaluation device having a measuring station for measuring a measuring variable on the measuring zone of the test element. Also included is a mounting to hold a test element, the test element having an airflow channel with two expansion sections and a narrow section located between these expansion sections. The expansion sections may have a cross-sectional area that increases in comparison to the narrow section in the direction away therefrom. A connection channel is located between the narrow section and the analysis function channel such that an air exchange connection is formed. The airflow channel is located in such a manner that a partial vacuum, which is generated using an airflow flowing through the airflow channel, acts on the analysis function channel.Type: ApplicationFiled: January 18, 2011Publication date: July 28, 2011Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Manfred Augstein, Susanne Wuerl
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Publication number: 20100112717Abstract: A method for providing a dried reagent in a microfluidic system is provided, the method comprising the following steps: providing a microfluidic system having a microfluidic structure, introducing a flowable carrier medium containing a reagent in the microfluidic structure, and drying the reagent in the microfluidic structure by lyophilization.Type: ApplicationFiled: October 5, 2009Publication date: May 6, 2010Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Manfred Augstein, Romi Roedl, Susanne Wuerl, Valerie Winckler-Desprez