An embodiment includes a cardioplegia delivery system having a console, controller, and disposables. The system aides the perfusionist in cardioplegia delivery to the patient during Cardiopulmonary Bypass Surgery. The console, in conjunction with the disposables, combines blood from the heart-lung machine and crystalloid from the IV-bag in a specified ratio and then adds in a drug (arrest agent and/or additive). The electro-mechanical console incorporates a blood/crystalloid pump, temperature controllable water circulation system, pressure and temperature monitors, a sensor interface with the disposables, an arrest agent pump, an additive pump and ultra-sonic air detection sensors. The system monitors and controls the blood-crystalloid ratio, drug concentration, flow rate, pressure, temperature, and delivery route of the cardioplegia solution delivered to the patient. The system is a software-controlled system with a graphical user interface controller. The controller is utilized to initiate/stop cardioplegia delivery, monitor delivery parameters and view/save relevant case information and data.

A dialysis system includes a dialysis instrument including a blood pump, a dialysate inlet pump, a dialysate outlet pump, and at least one fluid velocity sensor, each sensor including an emitter and a receiver, a dialyzer arranged (i) to receive blood pumped by the blood pump, (ii) to receive fresh dialysate pumped by the dialysate inlet pump and (iii) such that used dialysate is pumped from the dialyzer by the dialysate outlet pump, and a disposable cassette including a to-dialyzer dialysate pathway carrying dialysate pumped by the dialysate inlet pump and a from-dialyzer dialysate pathway carrying used dialysate pumped by the dialysate outlet pump, wherein at least one of the to-dialyzer dialysate pathway or the from-dialyzer dialysate pathway includes at least one sensing area so positioned and arranged such that when the disposable cassette is mounted to the instrument, the sensing area is coupled operably with both the emitter and the receiver of the at least one fluid velocity sensor.

A drain cassette for a dialysis unit has a fluid channel between venous and arterial connection ports, and a valve may controllably open and close fluid communication between a drain outlet port and the venous connection port or the arterial connection port. A blood circuit assembly and drain cassette may be removable from the dialysis unit, e.g., by hand and without the use of tools. A blood circuit assembly may include a single, unitary member that defines portions of a pair of blood pumps, control valves, channels to accurately position flexible tubing for an occluder, an air trap support, and/or other portions of the assembly. A blood circuit assembly engagement device may assist with retaining a blood circuit assembly on the dialysis unit, and/or with removal of the assembly. An actuator may operate a retainer element and an ejector element that interact with the assembly.

Systems and methods for the washing and processing of biological fluid/biological cells are disclosed. The systems and methods utilize a disposable fluid circuit including a spinning membrane separation device to wash the biological cells.

This disclosure relates to medical fluid sensors and related systems and methods. In certain aspects, a nuclear magnetic resonance device includes a support frame, a first magnet connected to the support frame, a second magnet connected to the support frame in a manner such that the second magnet is disposed within the magnetic field of the first magnet and a magnetic attraction exists between the first magnet and the second magnet, and a spacer disposed between the first magnet and the second magnet. The spacer is configured to maintain a space between the first magnet and the second magnet.

An external functional means comprises at least one housing body, at least one chamber integrated into the housing body for receiving medical fluids, at least one passage integrated into the housing body for receiving and/or conducting a medical fluid, and at least one valve means completely or partly integrated into the housing body for controlling or regulating a fluid flowing through the external functional means. The invention further specifies a blood treatment apparatus and methods which may be carried out by means of the external functional means of the invention and by means of the blood treatment apparatus, respectively.

Pressure measurement system (e.g., for an extracorporeal treatment system), method and pressure pod apparatus including a position sensor for use in repositioning a diaphragm that separates a liquid side cavity from a transducer side cavity (e.g., operatively connected to a pressure transducer); the liquid side cavity being in fluid communication with an inlet and an outlet.

The present specification describes a modular, portable hemofiltration system, for providing improved clearance levels of blood toxins, which includes at least one roller pump that is designed and operated to generate a rapidly varying pressure profile of fluid within at least a blood circuit of the hemofiltration system.

Described are embodiments that include methods and devices for separating composite liquids into components. Embodiments involve the use of a flexible membrane for separating a composite liquid into components. The composite liquid may include, in embodiments, a cellular containing liquid, such as whole blood or components of whole blood. In one specific embodiment, the composite liquid is a buffy coat.

A disposable cartridge for use in a hemodialysis machine has a blood flow path for carrying a volume of blood to be treated in a dialyser and a dialysate flow path, isolated from the blood flow path, for delivering a flow of dialysate solution through the dialyser. The cartridge is received in an engine section of the machine. The engine section has first and second platens which close when the cartridge is inserted to retain the cartridge. Actuators and sensors arranged on the second platen control operation of the cartridge.