Methods and systems for hypobaric oxygenation using a membrane oxygenator are provided. The system and method allows analysis, control, or both, of a flow rate, a fluid composition, a pressure, a temperature, an oxygen fraction, a carbon dioxide fraction, a chemical composition, an anesthetic concentration, an anesthetic partial pressure, or a combination comprising at least one of the foregoing, at any of a number of places in the oxygenation system.

A system and method for reducing gas bubbles, including gaseous microemboli (GME) during cardiopulmonary bypass (CPB) by the use of an oxygenator with venous blood bypass and a filter in the venous blood bypass is provided.

A gas delivery device includes a nitric oxide generating system. The system has a medium including a source of nitrite ions. A working electrode is in contact with the medium. A Cu(II)-ligand complex is in contact with the working electrode. A reference/counter electrode is, or a reference electrode and a counter electrode are in contact with the medium and separated from the working electrode. An inlet conduit is to deliver nitrogen gas to the medium, and an outlet conduit is to transport a stream of nitrogen gas and nitric oxide from the medium. An inspiratory gas conduit is operatively connected to the outlet conduit to introduce an oxygen-containing gas and form an output gas stream of the gas delivery device.

The invention relates to an apparatus for exchanging material between blood and a gas/gas mixture, comprising a chamber (1) through which blood can flow and in which a plurality of material-permeable fiber tubes is provided, the gas/gas mixture being flowable through the fiber tubes, blood being flowable around the fiber tubes. At least one deformable element (9) is provided in the chamber (1) in addition to the fiber tubes, through which the gas/gas mixture can flow, this deformable element being deformable and restorable, in particular compressible out of a relaxed shape and restorable to a relaxed shape by pressure fluctuations acting on the at least one element (9) externally, in particular pressure fluctuations transmitted by the blood in the chamber (1).

According to some embodiments, a system may treat blood containing metformin outside the body of a patient. The system may include one or more pumps configured to pump blood in a fluid flow path at a collective rate over 4 liters per minute. The system may include one or more heat exchangers operable to heat at least a portion of the blood to a temperature of at least 42 degrees. The system may include one or more convection dialysis modules configured to perform convection dialysis on at least a portion of the blood at least after the one or more heat exchangers allow the blood to cool one or more degrees.

According to some embodiments, a system may treat blood outside the body of a patient. The system may include one or more pumps configured to pump blood in a fluid flow path at a collective rate over 4 liters per minute. The system may include one or more heat exchangers operable to heat at least a portion of the blood to a temperature of at least 42 degrees Celsius and to allow the blood to cool one or more degrees following heating. The system may include one or more albumin dialysis modules configured to perform albumin dialysis on at least a portion of the blood at least after the one or more heat exchangers allow the blood to cool one or more degrees.

Described are systems and methods for monitoring administration of nitric oxide (NO) to ex vivo fluids. Examples of such fluids include blood in extracorporeal membrane oxygenation (ECMO) circuits or perfusion fluids used for preserving ex vivo organs prior to transplanting in a recipient. The systems and methods described herein provide for administering nitric oxide to the fluid, monitoring nitric oxide or a nitric oxide marker in the fluid, and adjusting the nitric oxide administration.

A gas delivery device includes a nitric oxide generating system. The system has a medium including i) a source of nitrite ions, or ii) a source of nitrite ions and a Cu(II)-ligand complex. A working electrode is in contact with the medium, wherein i) when the medium includes the source of nitrite ions, the working electrode is a copper containing conductive material or a base material coated with a copper containing conductive material, or ii) when the medium includes the source of nitrite ions and the Cu(II)-ligand complex, the working electrode is platinum, gold, carbon, a carbon coated material, and/or mercury. A reference/counter electrode is in contact with the medium and electrically isolated from the working electrode. An inlet conduit is to deliver oxygen gas to the medium, and an outlet conduit is to transport a stream of oxygen gas and nitric oxide from the medium.

Devices and methods are provided herein for exchange between a first agent and a second agent. The device includes a first chamber having a first inlet and a first outlet with a first flow passageway extending between the first inlet and the first outlet for flowing a first agent through the first chamber. The device also includes a second chamber having a second inlet and a second outlet with a second flow passageway extending between the second inlet and the second outlet for flowing a second agent through the second chamber and a membrane positioned between the first flow passageway and the second flow passageway to allow exchange through the membrane of the first agent with the second agent. Methods of nitrosylating blood and methods of manufacturing the device are also provided.

A gas exchanger with a restriction element or elements to reduce gas exchange as desired to avoid hypo-capnia and hyper-oxygenation in small patients. The gas exchanger includes a gas exchanger housing with an outer wall and a core which defines an inner wall and having a blood inlet for receiving a blood supply and a blood outlet. The gas exchanger also includes a hollow fiber bundle disposed within the housing between the core and the outer wall, and a gas inlet compartment for receiving an oxygen supply and directing the oxygen supply to the first ends of the hollow fiber bundle, wherein the gas inlet compartment includes at least one restriction element configured to allow the oxygen supply to reach only a portion of the hollow fiber bundle.