Patents Assigned to Advanced Renal Technologies
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Patent number: 9216247Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: GrantFiled: October 10, 2013Date of Patent: December 22, 2015Assignee: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole
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Publication number: 20150246167Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: January 8, 2010Publication date: September 3, 2015Applicant: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole, Suhail Ahmad
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Publication number: 20150246168Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: January 8, 2010Publication date: September 3, 2015Applicant: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole
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Patent number: 9029333Abstract: The present invention provides a glucose decomposition-suppressed solid preparation for dialysis among powdery or granular preparations for dialysis containing acetate-free solid organic acids as pH adjusting agents. The present invention provides the solid preparation for dialysis containing electrolytes, glucose and pH adjusting agents characterized in that solid organic acids containing reduced amount of microparticles are used, and more specifically, characterized in that solid organic acids whose 20 or less percent of particles are 250 ?m or less in diameter, or solid organic acids whose 10 or less percent of particles are 150 ?m or less in diameter, are used. Preferably, the solid organic acid contained therein is citric acid.Type: GrantFiled: November 24, 2009Date of Patent: May 12, 2015Assignee: Advanced Renal Technologies, Inc.Inventors: Yoshihiro Sugiyama, Yuichi Iwai, Michito Sumikawa, Naotaka Kuroda
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Publication number: 20140328948Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: December 6, 2013Publication date: November 6, 2014Applicant: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole
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Patent number: 8864699Abstract: The dose of dialysis in terms of urea clearance is marginal in many hemodialysis patients, and metabolic acidosis as determined by the pre-dialysis serum HCO3 level is common. A dialysate that included citric acid rather than acetic acid as acidifying agent provides superior performance properties. Citrate-containing dialysate was used exclusively in 22 hemodialysis patients. Initially, only 8 of the 22 patients had a pre-dialysis serum HCO3>23 mEq/L (lower limit of normal), however, after 12 weeks of dialysis using the citrate-containing dialysate, the serum HCO3 normalized in 15 patients (p=0.0001, Chi-square). Dialysis variables were kept constant in 19 of the patients, who also used and reused the same dialyzer model throughout. In these patients, the initial average urea reduction ratio (URR) was 68.5±5.9%, and after treatment with the citrate dialysate disclosed herein, this ratio had increased to 73±5.3% (p<0.03). SpKt/V, calculated using the Daugirdas II formula, also increased from 1.23±0.Type: GrantFiled: December 20, 2010Date of Patent: October 21, 2014Assignee: Advanced Renal TechnologiesInventors: Robin Callan, James J. Cole
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Publication number: 20140034873Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: October 10, 2013Publication date: February 6, 2014Applicant: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole
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Publication number: 20130186829Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: March 7, 2013Publication date: July 25, 2013Applicant: ADVANCED RENAL TECHNOLOGIESInventor: Advanced Renal Technologies
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Publication number: 20120006748Abstract: Dry acid-concentrate compositions comprising citrate and their use in preparing dialysate compositions and in performing hemodialysis is disclosed.Type: ApplicationFiled: December 21, 2010Publication date: January 12, 2012Applicant: ADVANCED RENAL TECHNOLOGIESInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole, Suhail Ahmad
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Publication number: 20110172583Abstract: The dose of dialysis in terms of urea clearance is marginal in many hemodialysis patients, and metabolic acidosis as determined by the pre-dialysis serum HCO3 level is common. A dialysate that included citric acid rather than acetic acid as acidifying agent provides superior performance properties. Citrate-containing dialysate was used exclusively in 22 hemodialysis patients. Initially, only 8 of the 22 patients had a pre-dialysis serum HCO3>23 mEq/L (lower limit of normal), however, after 12 weeks of dialysis using the citrate-containing dialysate, the serum HCO3 normalized in 15 patients (p=0.0001, Chi-square). Dialysis variables were kept constant in 19 of the patients, who also used and reused the same dialyzer model throughout. In these patients, the initial average urea reduction ratio (URR) was 68.5±5.9%, and after treatment with the citrate dialysate disclosed herein, this ratio had increased to 73±5.3% (p<0.03). SpKt/V, calculated using the Daugirdas II formula, also increased from 1.23±0.Type: ApplicationFiled: December 20, 2010Publication date: July 14, 2011Applicant: Advanced Renal TechnologiesInventors: Robin CALLAN, James J. Cole
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Patent number: 7862530Abstract: The dose of dialysis in terms of urea clearance is marginal in many hemodialysis patients, and metabolic acidosis as determined by the pre-dialysis serum HCO3 level is common. A dialysate that included citric acid rather than acetic acid as acidifying agent provides superior performance properties. Citrate-containing dialysate was used exclusively in 22 hemodialysis patients. Initially, only 8 of the 22 patients had a pre-dialysis serum HCO3>23 mEq/L (lower limit of normal), however, after 12 weeks of dialysis using the citrate-containing dialysate, the serum HCO3 normalized in 15 patients (p=0.0001, Chi-square). Dialysis variables were kept constant in 19 of the patients, who also used and reused the same dialyzer model throughout. In these patients, the initial average urea reduction ratio (URR) was 68.5±5.9%, and after treatment with the citrate dialysate disclosed herein, this ratio had increased to 73±5.3% (p<0.03). SpKt/V, calculated using the Daugirdas II formula, also increased from 1.23±0.Type: GrantFiled: November 8, 2004Date of Patent: January 4, 2011Assignee: Advanced Renal TechnologiesInventors: Robin Callan, James J. Cole
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Publication number: 20100176340Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: January 8, 2010Publication date: July 15, 2010Applicant: ADVANCED RENAL TECHNOLOGIESInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole, Suhail Ahmad
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Publication number: 20100170849Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: ApplicationFiled: January 8, 2010Publication date: July 8, 2010Applicant: ADVANCED RENAL TECHNOLOGIESInventors: Robin Callan, Walter A. Van Schalkwijk, James J. Cole, Suhail Ahmad
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Patent number: 7670491Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: GrantFiled: June 24, 2003Date of Patent: March 2, 2010Assignee: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. van Schalkwijk, James J. Cole, Suhail Ahmad
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Publication number: 20050119598Abstract: The dose of dialysis in terms of urea clearance is marginal in many hemodialysis patients, and metabolic acidosis as determined by the pre-dialysis serum HCO3 level is common. A dialysate that included citric acid rather than acetic acid as acidifying agent provides superior performance properties. Citrate-containing dialysate was used exclusively in 22 hemodialysis patients. Initially, only 8 of the 22 patients had a pre-dialysis serum HCO3>23 mEq/L (lower limit of normal), however, after 12 weeks of dialysis using the citrate-containing dialysate, the serum HCO3 normalized in 15 patients (p=0.0001, Chi-square). Dialysis variables were kept constant in 19 of the patients, who also used and reused the same dialyzer model throughout. In these patients, the initial average urea reduction ratio (URR) was 68.5±5.9%, and after treatment with the citrate dialysate disclosed herein, this ratio had increased to 73±5.3% (p<0.03). SpKt/V, calculated using the Daugirdas II formula, also increased from 1.23±0.Type: ApplicationFiled: November 8, 2004Publication date: June 2, 2005Applicant: Advanced Renal TechnologiesInventors: Robin Callan, James Cole
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Patent number: 6610206Abstract: Acid concentrates, and dialysate compositions prepared therefrom, contain citric acid and an effective amount of a buffering agent selected from acetate and/or lactate. The buffering agent allows a physiologically acceptable amount of citrate to maintain the desired pH of the dialysate.Type: GrantFiled: October 19, 1999Date of Patent: August 26, 2003Assignee: Advanced Renal TechnologiesInventors: Robin Callan, Walter A. van Schalkwijk, James J. Cole