Patents Assigned to NxStage Medical, Inc.
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Patent number: 11815189Abstract: Fluid channel sealing devices, frangible seals, fluid circuits, associated controllers and methods of using the same are provided for controlling fluid distribution using a reconfigurable blocking element having first and second portions to establish a first configuration free of any open channels such that fluid is prevented from flowing through the channel and a second configuration where the first and second portions are separated to establish an open channel and allow fluid to pass.Type: GrantFiled: September 25, 2019Date of Patent: November 14, 2023Assignee: NxStage Medical, Inc.Inventors: Gregory Yantz, Mark T. Wyeth, James Ian Johnson, William J. Schnell
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Patent number: 11813391Abstract: A vascular access device may include a blood circuit having an arterial blood line and a venous blood line. The venous blood line is connected to a first access needle and the arterial blood line is connected to a second access needle. The venous blood line is connected to an access component affixed to the second access needle and configured such that when the second access needle is used to infuse blood into a patient, the access component is positioned to withdraw blood and convey it into the venous line. The withdrawn blood may also be conveyed to an air detector to detect withdrawal of the second access needle.Type: GrantFiled: July 24, 2019Date of Patent: November 14, 2023Assignee: NxStage Medical, Inc.Inventors: Joseph E. Turk, Jr., Jeffrey H. Burbank, James M. Brugger
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Publication number: 20230355852Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. A blood treatment system treats blood with multiple fluids and performs fluid balancing on a patient's blood compartment. Multiple streams influence the patient temperature but only a subset of the fluids are dynamically temperature regulated. The system regulates a temperature of the flow, for example, of dialysate in order to regulate the return temperature of blood, in such a way that the temperature effect of the multiple streams is compensated.Type: ApplicationFiled: July 20, 2023Publication date: November 9, 2023Applicant: NxStage Medical, Inc.Inventor: Dennis M. Treu
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Publication number: 20230338635Abstract: Features for protecting against leaks in a fluid circuit are disclosed. In an embodiment, a first indicator of a leak is used to trigger confirmation by blood flow reversal and air detection in the blood circuit. A method for performing a blood treatment includes, at blood treatment machine, pumping blood to a patient through a first blood line. Further, at a controller of the blood treatment machine, a first signal is received, indicating a probability of a leak in the first blood line. Responsively to the first signal, the controller commands a leak verification operation and receives a second signal indicating whether a leak in the first blood line is verified. Further, a leak indicating signal is generated if the second signal indicates a leak is verified.Type: ApplicationFiled: July 5, 2023Publication date: October 26, 2023Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger, Daniel Joseph Rubery, JR.
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Patent number: 11783939Abstract: An automatic monitoring system for a medical treatment device helps to ensure that an a medical treatment device operated at a treatment location away from a clinic is preformed safely. The monitoring system may verify that an assistant is present during treatment of the patient. Among the features disclosed biometric authentication to verify that a trained assistant is present, a presence detector to ensure the assistant is continuously present during treatment, and warning and recovery processes that allow intermittent lapses in the continuous presence of the assistant. The treatment device also communicates with a remote server or terminal.Type: GrantFiled: December 31, 2020Date of Patent: October 10, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger
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Publication number: 20230302212Abstract: Simple-to-use systems, methods, and devices for priming replacement blood treatment devices, for swapping the blood treatment devices out, for replacing swapped-out blood treatment devices, and other related operations are described. In embodiments, a blood treatment device can be primed while a therapy is still running. When the replacement blood treatment device is needed, the therapy can be stopped momentarily (less than a minute) for the rapid and safe swap of the blood treatment device. Blood loss can be minimized. The down time from therapy can be minimized.Type: ApplicationFiled: May 5, 2023Publication date: September 28, 2023Applicant: NxStage Medical, Inc.Inventors: James M. BRUGGER, David DESOUZA
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Publication number: 20230302209Abstract: A system for filling multiple sterile containers includes a filter with an inlet port and multiple outlet ports, the outlet ports being pre-attached to sterile containers by respective filling lines of each container. Each container has an interior and each of the respective filling lines are connected to a respective container interior. The respective filling lines are sealed to the outlet ports and the containers such that the container interiors are isolated from an external environment except the inlet port, via the filter, forming a combined interior volume which is sterile. A container that is connectable to an outlet port the system has a bladder, a first tube and a second tube connected to the bladder, and a sterilizing filter. The container, the first tube and the second tube, and the sterilizing filter are sterile before water is flowed through the sterilizing filter into the bladder.Type: ApplicationFiled: April 17, 2023Publication date: September 28, 2023Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger
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Publication number: 20230293794Abstract: A conductivity measurement device includes first and second conductivity measurement flow channels positioned in a fluid circuit and fluidly linked for fluid flow between the first and second conductivity measurement flow channels. A controller having a current source connected to the first and second conductivity channels applies alternating voltages at frequencies that are different, each being respective to one of the first and second conductivity cells.Type: ApplicationFiled: May 23, 2023Publication date: September 21, 2023Applicant: NxStage Medical, Inc.Inventors: Orlando SOTO, Joseph RAUSA, James M. BRUGGER, William J. SCHNELL, Goetz FRIEDERICHS, Jeffrey H. BURBANK, Joseph E. TURK, JR., Scott W. NEWELL, Amanda WOZNIAK
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Patent number: 11752249Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. A blood treatment system treats blood with multiple fluids and performs fluid balancing on a patient's blood compartment. Multiple streams influence the patient temperature but only a subset of the fluids are dynamically temperature regulated. The system regulates a temperature of the flow, for example, of dialysate in order to regulate the return temperature of blood, in such a way that the temperature effect of the multiple streams is compensated.Type: GrantFiled: December 14, 2017Date of Patent: September 12, 2023Assignee: NxStage Medical, Inc.Inventor: Dennis M. Treu
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Publication number: 20230277744Abstract: Methods and systems for reducing electrical leakage current between a patient and a medical device include sensing electrical current in a fluid line and inducing a cancelling electrical current or voltage to reduce the electrical leakage current. A system for implementing the method includes one or more sensors/transducers and a controller that drives the transducer(s) based on signals from the sensor(s).Type: ApplicationFiled: July 14, 2021Publication date: September 7, 2023Applicant: NxStage Medical, Inc.Inventors: Mark F. SMITH, Ilya KARNAUK, Eric ZOGLIO
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Publication number: 20230277745Abstract: A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.Type: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Applicant: NxStage Medical, Inc.Inventors: Scott W. NEWELL, Dennis M. TREU, Jerome JAMES
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Patent number: 11747043Abstract: A low leakage current fluid heater and systems and methods thereof. The fluid heater has a configuration whereby a heating element is isolated from a fluid channel so as to leak into fluid passing through the channel an allowed amount of leakage current. Fluid passing through the fluid heater can be heated to a desired temperature. A controller can provide control signals to driver the fluid heater to the desired temperature and maintain the temperature at the desired temperature.Type: GrantFiled: May 27, 2020Date of Patent: September 5, 2023Assignee: NxStage Medical, Inc.Inventor: Scott W. Newell
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Patent number: 11738133Abstract: Features for protecting against leaks in a fluid circuit are disclosed. In an embodiment, a first indicator of a leak is used to trigger confirmation by blood flow reversal and air detection in the blood circuit. A method for performing a blood treatment includes, at blood treatment machine, pumping blood to a patient through a first blood line. Further, at a controller of the blood treatment machine, a first signal is received, indicating a probability of a leak in the first blood line. Responsively to the first signal, the controller commands a leak verification operation and receives a second signal indicating whether a leak in the first blood line is verified. Further, a leak indicating signal is generated if the second signal indicates a leak is verified.Type: GrantFiled: December 16, 2019Date of Patent: August 29, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger, Daniel Joseph Rubery, Jr.
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Patent number: 11717601Abstract: A treatment device system includes a treatment machine for performing a therapy on a patient, the treatment machine including at least one fluid conveyor and a controller, the controller having a first memory, to cause the at least one fluid conveyor to produce a therapeutic fluid by mixing purified water and at least one concentrate. The system also includes and a water purifier in fluid communication with and providing the purified water to the treatment machine. A wired or wireless control line provides two way communication between the controller of the treatment machine and the internal central controller of the water purifier, wherein the controller of the treatment machine transmits data via the control line to the internal central controller of the water purifier for control of the water purifier, the data provided based on at least one of the operator inputs received via the user interface.Type: GrantFiled: August 26, 2021Date of Patent: August 8, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu, Mark T. Wyeth
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Publication number: 20230241299Abstract: A medicament preparation system includes a disposable cartridge with a flow path. Various sensors may be placed on the cartridge to measure qualities of the fluid flowing through the flow path. The sensors are placed in precise locations using various approaches that make manufacturing of the cartridge efficient and repeatable. A drain line that is susceptible to fouling may be preattached and various approaches are used to remove or reduce the fouling. An elastomeric contact can also be present in the medical preparation system and used in a conductivity measurement subsystem.Type: ApplicationFiled: April 7, 2023Publication date: August 3, 2023Applicant: NxStage Medical, Inc.Inventors: James M. Brugger, Jeffrey H. Burbank, Goetz Friederichs, Scott W. Newell, William J. Schnell, Orlando Soto
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Patent number: 11701458Abstract: A conductivity measurement device includes first and second conductivity measurement flow channels positioned in a fluid circuit and fluidly linked for fluid flow between the first and second conductivity measurement flow channels. A controller having a current source connected to the first and second conductivity channels applies alternating voltages at frequencies that are different, each being respective to one of the first and second conductivity cells.Type: GrantFiled: December 12, 2019Date of Patent: July 18, 2023Assignee: NxStage Medical, Inc.Inventors: Orlando Soto, Joseph Rausa, James M. Brugger, William J. Schnell, Goetz Friederichs, Jeffrey H. Burbank, Joseph E. Turk, Jr., Scott W. Newell, Amanda Wozniak
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Publication number: 20230211059Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: ApplicationFiled: April 21, 2021Publication date: July 6, 2023Applicant: NxStage Medical, Inc.Inventors: Dennis M. TREU, Jerome JAMES, Jeffrey H. BURBANK, Daniel Joseph RUBERY, Jr.
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Patent number: 11690941Abstract: A method of performing a dialysis treatment includes using a pump and a dialysate supply line to transport peritoneal dialysis fluid, the supply line having a proximal end into which peritoneal dialysis fluid is supplied and from which spend dialysate is withdrawn, and a distal end which is connected to a patient's peritoneal access. The method further includes generating proximal and distal pressure signals using pressure detectors located at both the proximal and distal ends, respectively, of said supply line. During a drain cycle in which spent dialysate is pumped from the patient, the method includes, responsively to the proximal and distal pressure signals, detecting a characteristic of a pressure difference between the distal and proximal ends whose magnitude is determined by a predicted change in dialysate properties, and responsively to the characteristic, generating a signal indicating the change in dialysate properties.Type: GrantFiled: March 21, 2019Date of Patent: July 4, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu, Mark T. Wyeth
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Publication number: 20230201431Abstract: A method of reducing leakage current from a patient to a ground potential through an applied part of a medical device includes defining a maximum permissible leakage current Amax from the patient to the ground potential when the patient is energized to an electric potential V and supplying the medical device with water having a resistivity value ? through a fluid line having a length L and an inner diameter ID. The value of L and ID is selected to cause the fluid conduit filled with water of resistivity ? to have a resistance of R high enough to maintain the leakage current from the patient to the ground potential below Amax.Type: ApplicationFiled: June 23, 2021Publication date: June 29, 2023Applicant: NxStage Medical, Inc.Inventor: Goetz FRIEDERICHS
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Patent number: 11684708Abstract: A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.Type: GrantFiled: July 30, 2021Date of Patent: June 27, 2023Assignee: NxStage Medical, Inc.Inventors: Scott W. Newell, Dennis M. Treu, Jerome James