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US Patent 11752248 Medical treatment system and methods using a plurality of fluid lines

Patent 11752248 was granted and assigned to DEKA (company) on September, 2023 by the United States Patent and Trademark Office.

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Contents

Is a
Patent
Patent

Patent attributes

Patent Applicant
DEKA (company)
DEKA (company)
Current Assignee
DEKA (company)
DEKA (company)
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
11752248
Patent Inventor Names
Paul G. Girouard
Robert J. Bryant, Jr.
Michael G. Norris
Geoffrey P. Spencer
Jacob W. Scarpaci
David A. Beavers
Joseph P. Rushlow
Andrew S. Coll
...
Date of Patent
September 12, 2023
Patent Application Number
16247204
Date Filed
January 14, 2019
Patent Citations
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US Patent 7300413 Blood processing machine and system using fluid circuit cartridge
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US Patent 7303540 User interface for blood treatment device
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US Patent 7318292 Method and device for attenuating the motion of hydraulic cylinders of mobile work machinery
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US Patent 7327273 Fluid monitoring device
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US Patent 7364563 Continuous volume detection for a flexible venous reservoir in a cardiopulmonary bypass circuit
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US Patent 7461968 System, device, and method for mixing liquids
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US Patent 7465285 Control system for driving fluids through an extracorporeal blood circuit
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US Patent 7473238 Hemofiltration systems and methods that maintain sterile extracorporeal processing conditions
...
Patent Citations Received
‌
US Patent 11964086 Medical treatment system and methods using a plurality of fluid lines
0
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US Patent 11975128 Medical treatment system and methods using a plurality of fluid lines
0
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US Patent 12026271 Control systems and methods for blood or fluid handling medical devices
0
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US Patent 12064540 Hemodialysis systems and methods
0
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US Patent 12066017 Pumping cassette
0
Patent Primary Examiner
‌
Shefali D Patel
CPC Code
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A61M 2205/13
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A61M 2205/14
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A61M 2205/33
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A61M 2205/3306
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G01V 8/20
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A61M 1/0023
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A61M 1/14
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A61M 1/16
...

Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

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