Systems, devices, and method for gas removal from a wearable device are provided. The systems comprise a gas removal filter having an inlet, a fluid outlet, and a vent port. The gas removal filter comprises a filter mesh between the inlet and outlet, the filter mesh configured to allow only liquid phase material through the filter mesh. The systems also comprises a gas detector for detecting gas in the gas removal filter; a orientation sensor for determining an orientation of the gas removal filter; a transducer protector filter having a first side and a second side, the transducer protector filter on fluid communication with the vent port of the gas removal filter; a pressure transducer in fluid communication with the second side of the transducer protector filter; and an gas removal pump in fluid communication with the second side of the transducer protector filter.

The specification discloses a portable dialysis machine having a detachable controller unit and base unit with an improved reservoir heating system. The controller unit includes a door having an interior face, a housing with a panel, where the housing and panel define a recessed region configured to receive the interior face of the door, and a manifold receiver fixedly attached to the panel. The base unit has a reservoir with an internal pan and external pan, separated by a space that holds a heating element. The heating element is electrically coupled to electrical contacts attached to the external surface of the external pan.

Provided are a connection structure and a blood purifying device which are capable of enhancing the durability of seal members. This connection structure 1 is roughly configured to be provided with: a connection part 3 attached to a main body 90 which has a housing 20, a diaphragm 25, a chamber 2, and a coupling 30 for connecting an output port 27, and which has a pressure sensor 10a for detecting a pressure PK of a gas K output from the coupling 30; and a seal member which is sandwiched by the lateral surface 270 of the output port 27 and the lateral surface 302 of the coupling 30, and which moves while changing the seal position when connecting or disconnecting the chamber 2 and the connection part 3.

An apparatus for measuring pressure within a fluid path includes a housing defining the structure of the apparatus. The housing includes a fluid path that extends through the housing and allows a fluid to pass through the housing. The apparatus also includes a first volume chamber that is in fluid communication with the fluid path and has a first volume chamber opening, and a second volume chamber with a second volume chamber opening that is less than the first volume chamber opening. A diaphragm separates the first volume chamber from the second volume chamber and fluidly disconnects the second volume chamber from the fluid path. The diaphragm deforms based upon the pressure within the fluid path. The apparatus also includes an interface that is connectable to a pressure sensor, and the second volume chamber is in fluid communication with the interface.

A blood treatment system and method controlling same are provided. The system comprises a blood pump for urging blood from an arterial or venous interface through a blood flow path; a dialyser in fluid communication with said blood flow path for ultrafiltering the blood to remove fluid therefrom; a fluid removal pump in fluid communication with said dialyser for urging ultrafiltered fluid away from said dialyser; a controller in signal communication with said blood pump; and a reversing valve for selectively reversing direction of blood flow in at least a portion of the blood flow path under signal control of said controller. The blood pump is selectively activatable under signal control of the controller.

A medical appliance for use in extracorporeal blood treatment. The appliance includes a housing component, a cover and a pivot bearing arrangement by which the cover is mounted on the housing component. The cover is pivotable between a covering position, in which the housing component is covered, and a exposure position, in which the housing component is exposed. The pivot bearing arrangement has pivot bearings, each having a bearing element and a bearing element receptacle. The cover can move linearly relative to the housing component between a dismounting position, in which at least one of the bearing elements is disengaged from a bearing element receptacle, and a bearing position, in which both bearing elements engage the bearing element receptacles. The cover is mounted resiliently and elastically preloaded relative to the housing component by a spring arrangement.

An apparatus for measuring pressure within a fluid path includes a housing defining the structure of the apparatus. The housing includes a fluid path that extends through the housing and allows a fluid to pass through the housing. The apparatus also includes a first volume chamber that is in fluid communication with the fluid path and has a first volume chamber opening, and a second volume chamber with a second volume chamber opening that is less than the first volume chamber opening. A diaphragm separates the first volume chamber from the second volume chamber and fluidly disconnects the second volume chamber from the fluid path. The diaphragm deforms based upon the pressure within the fluid path. The apparatus also includes an interface that is connectable to a pressure sensor, and the second volume chamber is in fluid communication with the interface.

A pressure cell holder for attachment to a housing of an extracorporeal blood treatment machine, such as a dialysis machine. The pressure cell holder includes a gripping device for holding a pressure cell inserted into the pressure cell holder by enclosing or engaging the pressure cell, and an ejector mechanism for ejecting the pressure cell when the gripping device is released.

A dialysis system is disclosed. The example dialysis system includes a housing, a pump actuator housed by the housing, a fluid pumping cassette coupled operably to the housing and including a flexible membrane covering a pump chamber, and a mechanically actuated piston head provided by the pump actuator and positioned to extend towards and away from the fluid pumping cassette. The fluid pumping cassette is positioned such that the flexible membrane of the fluid pumping cassette faces the piston head so that the piston head can push the flexible membrane into the pump chamber of the fluid pumping cassette to expel a fluid from the pump chamber. The example dialysis system also includes a controller programmed to perform a leak test by monitoring a sensed position of the mechanically actuated piston head while the mechanically actuated piston head applies a force to the flexible membrane of the fluid pumping cassette.

The specification discloses a portable dialysis machine having a detachable controller unit and base unit. The controller unit includes a door having an interior face, a housing with a panel, where the housing and panel define a recessed region configured to receive the interior face of the door, and a manifold receiver fixedly attached to the panel. The base unit has a planar surface for receiving a container of fluid, a scale integrated with the planar surface, a heater in thermal communication with the planar surface, and a sodium sensor in electromagnetic communication with the planar surface. Embodiments of the disclosed portable dialysis system have improved structural and functional features, including improved modularity, ease of use, and safety features.