A blood purification apparatus is provided in which waste liquid is prevented from flowing through an ultrafiltration pump during ultrafiltration so that the performance and accuracy of ultrafiltration can be maintained over a long period. The blood purification apparatus includes an ultrafiltration line one end of which is connected to a dialysate introduction line at a position on a downstream side with respect to a duplex pump. The ultrafiltration line is provided with the ultrafiltration pump. The ultrafiltration pump is capable of performing ultrafiltration by drawing dialysate in the dialysate introduction line through the ultrafiltration line such that the volume of the dialysate to be introduced into a dialyzer becomes smaller than the volume of waste liquid to be drained from the dialyzer.

The invention relates to a medical apparatus for extracorporeal blood treatment, comprising an antimicrobial surface coating, wherein the antimicrobial surface coating is a powder coating. It further relates to a method for controlling microbes and microorganisms on a surface of a medical apparatus, wherein a powder coating contains components, in particular additives, with an antimicrobial effect.

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.

A control unit (30) is arranged to control a dialysis fluid distribution system (12) comprising two volumetric pumps (P1, P2) and a dialyzer (13). The control unit (30) is operable in a calibration mode, to establish a bypass flow path that bypasses the dialyzer (13) and extends between the pumps (P1, P2) and to operate the pumps (P1, P2) at first and second calibration speeds so as to balance the flow rates generated by the pumps (P1, P2), e.g. based on a measured pressure or fluid level in dialysis fluid distribution system (12). The control unit (30) determines, based on the first and second calibration speeds, a relation between the stroke volumes of the pumps (P1, P2). The control unit (30) is further operable in a treatment mode, to establish a main flow path that extends between the first and second pumps (P1, P2) via the dialyzer (13) and to control the first and second pumps (P1, P2), based on the relation between their stroke volumes, to operate at a respective treatment frequency so as to generate a selected ultrafiltration rate in the dialyzer (13).

The present invention provides a hemodialysis machine comprising a removably mountable cartridge having at least one inlet and at least one outlet, the cartridge defining a fluid pathway between said at least one inlet and said at least one outlet, a sanitisation device having an inlet and an outlet, a conduit connected between an outlet of the cartridge and the inlet of the sanitisation device and, a conduit connected between the outlet of the sanitisation device and an inlet of the cartridge.

The invention relates to a blood treatment device, in particular a device which can perform haemodialysis and haemodifiltration procedures. This is achieved using an interconnected pump and valve arrangement which can be controlled to direct fluid across a dialysis membrane or parallel to said membrane depending on the type of processing required. This allows dynamic variation between modes of operation and treatment.

Apparatus is provided for deployment in a lumen of a blood vessel of a subject. The apparatus includes a reciprocating device configured to move downstream and upstream in the blood vessel in a reciprocating pattern to provide: (i) a first effective surface area of the device for pushing blood downstream in the blood vessel during downstream motion of the reciprocating device, and (ii) second effective surface area of the device during upstream motion of the reciprocating device. The first effective surface area is larger for pushing blood in the blood vessel than the second effective surface area. The apparatus further includes a device driver configured to drive the reciprocating device in the reciprocating pattern. Other applications are also described.

The invention relates to a blood treatment device, in particular a device which can perform haemodialysis and haemodifiltration procedures. This is achieved using an interconnected pump and valve arrangement which can be controlled to direct fluid across a dialysis membrane or parallel to said membrane depending on the type of processing required. This allows dynamic variation between modes of operation and treatment.

A blood purification apparatus comprising: a blood circuit including an arterial blood circuit and a venous blood circuit and that is capable of extracorporeally circulating blood of a patient from a distal end of the arterial blood circuit to a distal end of the venous blood circuit; a blood purification device provided between the arterial and the venous blood circuit of the blood circuit and that is capable of purifying the blood flowing in the blood circuit; a dialysate introduction line for introducing dialysate into the blood purification device and a dialysate drain line for discharging drain liquid from the blood purification device; a liquid delivery pump provided to the dialysate introduction line and that is capable of causing the dialysate in the dialysate introduction line to flow; a heating device that is capable of heating the dialysate to be introduced from the dialysate introduction line into the blood purification device; a temperature-detecting device that is capable of detecting a temperature of the dialysate heated by the heating device; and a control device that is capable of controlling at least the liquid delivery pump and the heating device, wherein the control device is configured so that, if a dialysate temperature detected by the temperature-detecting device is higher than or equal to a predetermined value, the liquid delivery pump is controlled to cause the dialysate in the heating device to flow to an upstream side or a downstream side with respect to the heating device without allowing the dialysate to be introduced into the blood purification device.

A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialyzer, and a dialysate flow path and a blood flow path which flow in opposing directions through the dialyzer. The disposable cartridge includes pressure and fluid flow sensors for measuring the pressure and fluid flow in the dialysate flow path and blood flow path. In addition, the disposable cartridge possesses pump actuators (but not pump motors) for pumping dialysate and blood through their respective flow paths. Preferably, the disposable cartridge includes a filter for removing waste products from dialysate.