Patents by Inventor Amanda K. Stennett
Amanda K. Stennett 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: 9078969Abstract: A dialysate regeneration system for removing contaminants from spent dialysate according to this invention includes a dialysate circulation flow path including a pump that pumps spent dialysate through the dialysate circulation flow path, a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet, a second cartridge adapted to remove urea from the spent dialysate, the second cartridge including semi-permeable hollow fibers adapted for transport of urea across the walls of the semi-permeable hollow fibers and adapted to retain at least calcium, magnesium, and sodium ions in the spent dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet.Type: GrantFiled: September 1, 2010Date of Patent: July 14, 2015Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Norma J. Ofsthun, Harold F. Sandford, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps, Michael James Beiriger
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Patent number: 8999169Abstract: The invention is directed to a method of determining a dosage of phosphorus binder for a patient undergoing dialysis treatment to achieve a pre-dialysis serum phosphorus concentration within a desired concentration range while achieving a desired net accumulation of calcium. The method includes determining the dosage of phosphorus binder that will achieve pre-dialysis serum phosphorus concentration of the patient that is within the desired concentration range while accounting for the change in the amount of phosphorus removed by the dialysis treatment when the pre-dialysis serum phosphorus concentration of the patient is within the desired concentration range, determining a dialysate calcium concentration that will result in the desired net accumulation of calcium over a complete dialysis cycle, and dialyzing the patient with a dialysate containing a calcium concentration based upon that determination.Type: GrantFiled: October 16, 2009Date of Patent: April 7, 2015Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Frank A. Gotch, Benjamin J. Lipps, Peter Kotanko, Nathan W. Levin, Amanda K. Stennett, Norma J. Ofsthun
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Patent number: 8822225Abstract: A method of identifying a patient who is non-compliant with prescribed diet and/or phosphate binder regimen calculates a phosphorus-protein ratio (PPR) by calculating the patient's protein intake, measuring the patient's serum phosphorus concentration, and estimating the amount of phosphorus removed by the patient's kidneys from measured residual urea clearance. The PPR is the ratio between the total amount of phosphorus removed from the patient and the patient's protein intake. The method enables identifying a patient that is non-compliant with prescribed diet and/or phosphate binder regimen if the PPR is outside of an acceptable range.Type: GrantFiled: October 1, 2010Date of Patent: September 2, 2014Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Frank A. Gotch, Amanda K. Stennett, Norma J. Ofsthun
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Patent number: 8777892Abstract: A portable peritoneal dialysis system for a patient includes an inlet port for providing inflow to the patient's peritoneal cavity, an outlet port for providing outflow from the patient's peritoneal cavity, and a volume of dialysate for flow into and out of the patient's peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate. The portable peritoneal dialysis system also includes a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient's peritoneal cavity, and an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient's peritoneal cavity.Type: GrantFiled: November 2, 2009Date of Patent: July 15, 2014Assignee: Fresenius Medical Care Holdings, Inc.Inventors: Harold F. Sandford, Norma J. Ofsthun, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Publication number: 20120184036Abstract: A method of identifying a patient who is non-compliant with prescribed diet and/or phosphate binder regimen calculates a phosphorus-protein ratio (PPR) by calculating the patient's protein intake, measuring the patient's serum phosphorus concentration, and estimating the amount of phosphorus removed by the patient's kidneys from measured residual urea clearance. The PPR is the ratio between the total amount of phosphorus removed from the patient and the patient's protein intake. The method enables identifying a patient that is non-compliant with prescribed diet and/or phosphate binder regimen if the PPR is outside of an acceptable range.Type: ApplicationFiled: October 1, 2010Publication date: July 19, 2012Inventors: Frank A. Gotch, Amanda K. Stennett, Norma J. Ofsthun
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Publication number: 20110060273Abstract: A dialysate regeneration system for removing contaminants from spent dialysate according to this invention includes a dialysate circulation flow path including a pump that pumps spent dialysate through the dialysate circulation flow path, a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet, a second cartridge adapted to remove urea from the spent dialysate, the second cartridge including semi-permeable hollow fibers adapted for transport of urea across the walls of the semi-permeable hollow fibers and adapted to retain at least calcium, magnesium, and sodium ions in the spent dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet.Type: ApplicationFiled: September 1, 2010Publication date: March 10, 2011Applicant: Fresenius Medical Care Holdings, Inc.Inventors: Norma J. Ofsthun, Harold F. Sandford, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Publication number: 20100114012Abstract: A portable peritoneal dialysis system for a patient includes an inlet port for providing inflow to the patient's peritoneal cavity, an outlet port for providing outflow from the patient's peritoneal cavity, and a volume of dialysate for flow into and out of the patient's peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate. The portable peritoneal dialysis system also includes a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient's peritoneal cavity, and an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient's peritoneal cavity.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Inventors: Harold F. Sandford, Norma J. Ofsthun, Amanda K. Stennett, Jiunn Yeong Teo, Cheryl Ford, Benjamin J. Lipps
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Publication number: 20100096330Abstract: The invention is directed to a method of determining a dosage of phosphorus binder for a patient undergoing dialysis treatment to achieve a pre-dialysis serum phosphorus concentration within a desired concentration range while achieving a desired net accumulation of calcium. The method includes determining the dosage of phosphorus binder that will achieve pre-dialysis serum phosphorus concentration of the patient that is within the desired concentration range while accounting for the change in the amount of phosphorus removed by the dialysis treatment when the pre-dialysis serum phosphorus concentration of the patient is within the desired concentration range, determining a dialysate calcium concentration that will result in the desired net accumulation of calcium over a complete dialysis cycle, and dialyzing the patient with a dialysate containing a calcium concentration based upon that determination.Type: ApplicationFiled: October 16, 2009Publication date: April 22, 2010Applicant: Fresenius Medical Care Holdings, Inc.Inventors: Frank A. Gotch, Benjamin J. Lipps, Peter Kotanko, Nathan W. Levin, Amanda K. Stennett, Norman J. Ofsthun