Assignee: Nxstage Medical, Inc.

Location: Lawrence, MA
No. of patents: 26

Number	Title	Issue Date
8092414	Diaphragm pressure pod for medical fluids A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartme...	01/10/2012
8042838	Fluid line connector safety device Devices can use various features to prevent the disconnection of connectors used in medical treatments. For example, a disconnection prevention member can have ends which hold luer connectors such that a male luer connector is prevented from separating from a female...	10/25/2011
8002727	Methods and apparatus for leak detection in blood processing systems A blood processing system includes a flow reversing device with at least an air sensor in the venous line located near the patient. During treatment, blood flow is reversed to cause air to infiltrate the blood lines if any disconnections or breaks in the blood line ...	08/23/2011
7976711	Batch filtration system for preparation of sterile fluid for renal replacement therapy A method and device for blood treatments that use fluids such as dialysate and replacement fluid for renal replacement therapy. In an embodiment, fluid is passed either by pump or passively by gravity feed, through a microporous sterilization filter from a fluid sou...	07/12/2011
7901579	Blood treatment dialyzer/filter for permitting gas removal A configuration of a blood microtubular filter/dialyzer used in many kinds of renal replacement therapy systems can provide a highly effective mechanism for removing air from the blood circuit of such systems. Air is removed from an outlet header space of the filter...	03/08/2011
7790043	Systems and methods for handling air and/or flushing fluids in a fluid circuit Systems and methods handle air and rinsing fluid during fluid processing. The systems and methods eliminate air from a fluid processing system prior to, during, and after use. The systems and methods provide a connector assembly for establishing fluid flow from a fl...	09/07/2010
7780619	Blood treatment apparatus A blood processing machine has a compact configuration in which the first and second parts of the machine separate to open a gap between them. The actuators and sensors face into the gap such that when a cartridge with a fluid circuit is placed in the gap and the tw...	08/24/2010
7776219	Methods, devices, and systems for hemodilution Devices, methods, and system that prevent clotting of blood during blood-processing procedures such as hemofiltration, hemodialysis, and hemodiafiltration are described. A filter with a cap has a housing that is shaped to receive a blood filter. The housing has an i...	08/17/2010
7771379	Functional isolation of upgradeable components to reduce risk in medical treatment devices A medical treatment system isolates more risk-sensitive equipment from less risk-sensitive components of a treatment device to allow upgrades to be made to the latter more easily without an concomitant increase in risk to a patient caused by upgrades. For example, t...	08/10/2010
7758082	Fluid line connector safety device Devices having various features to prevent the disconnection of connectors used in medical treatments are disclosed. The devices can prevent disconnection of luer connectors that are incompletely mated. ...	07/20/2010
7749393	Batch filtration system for preparation of sterile fluid for renal replacement therapy A method and device for blood treatments that use fluids such as dialysate and replacement fluid for renal replacement therapy. In an embodiment, fluid is passed either by pump or passively by gravity feed, through a microporous sterilization filter from a fluid sou...	07/06/2010
7686778	Waste balancing for extracorporeal blood treatment systems One or more waste balancing systems may be used in a fluid circulating system for medical use. The fluid circulating system may be part of a blood treatment system for a patient suffering renal failure. A waste balancing system may include a pressure element operabl...	03/30/2010
7588684	Systems and methods for handling air and/or flushing fluids in a fluid circuit Systems and methods handle air and rinsing fluid during fluid processing. The systems and methods eliminate air from a fluid processing system prior to, during, and after use. The systems and methods provide a connector assembly for establishing fluid flow from a fl...	09/15/2009
7544300	Batch filtration system for preparation of sterile fluid for renal replacement therapy A method and device for blood treatments that use fluids such as dialysate and replacement fluid for renal replacement therapy. In an embodiment, fluid is passed either by pump or passively by gravity feed, through a microporous sterilization filter from a fluid sou...	06/09/2009
7473238	Hemofiltration systems and methods that maintain sterile extracorporeal processing conditions A disposable fluid circuit kit for extracorporeal blood treatment systems that supply replacement fluid to a patient is described. The circuit has a blood portion that carries blood and subjects it to some treatment, such as dialysis or hemofiltration. A portion car...	01/06/2009
7470265	Dual access spike for infusate bags A port spike for medical fluid containers, such as infusate bags, for example, provides two ports to permit recirculation of fluids within the container. The recirculating flow allows bubbles to settle out which can't happen effectively if the flow is sucked out imm...	12/30/2008
7419597	Fluid, circuits, systems, and processes for extracorporeal blood processing A method for renal replacement therapy includes priming a fluid circuit and recirculating the sterile fluid during priming to permit gas to float out of the sterile fluid into a fluid reservoir. The fluid is preferably either warmed during circulation or vibrated to...	09/02/2008
7347849	Modular medical treatment replaceable component A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a flui...	03/25/2008
7338460	Blood processing machine fluid circuit cartridge A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a flui...	03/04/2008
7300413	Blood processing machine and system using fluid circuit cartridge A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a flui...	11/27/2007
7267658	Renal replacement therapy device for controlling fluid balance of treated patient A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a flui...	09/11/2007
7226538	Fluid processing apparatus Systems and methods handle air and rinsing fluid during fluid processing. The systems and methods eliminate air from a fluid processing system prior to, during, and after use. The systems and methods provide a connector assembly for establishing fluid flow from a fl...	06/05/2007
7214312	Fluid circuits, systems, and processes for extracorporeal blood processing A sterilized fluid management kit for use in renal replacement therapy isolates a replacement fluid container from touch contamination and provides for sterilization of replacement fluid by filtering using an installed filter that is hermetically connected to the re...	05/08/2007
7147613	Measurement of fluid pressure in a blood treatment device A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a flui...	12/12/2006
7112273	Volumetric fluid balance control for extracorporeal blood treatment A method and device for adjusting a volumetric flow balancing system for an extracorporeal blood treatment system receives a pressure signal and calculates a compensation factor that is used to adjust the relative flow rates of the volumetrically balanced fluids. Fo...	09/26/2006
7040142	Method and apparatus for leak detection in blood circuits combining external fluid detection and air infiltration detection One of the most significant safety concerns in the automation of extracorporeal blood treatments such as dialysis is the risk of blood leakage. Extracorporeal blood treatment systems draw blood at such a high rate that a loss of integrity in the blood circuit can be...	05/09/2006

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Assignee: Nxstage Medical, Inc.