There is described a method of use of a mass exchanger. In the method the mass exchanger comprises: a first channel for accommodating flow of a liquid to be treated; and a second channel for accommodating flow of a treatment agent, the first and second channels have a permeable membrane provided between them, so as to allow transfer of selected species between the first channel and the second channel. The steps of the mass transfer method comprise passing the liquid to be treated along the first channel and introducing a mixture of liquid and gas into the second channel to provide a two-phase treatment agent. It is desirable to provide a means of adjusting the concentration of gas species in a liquid such as blood, while simultaneously controlling the temperature of the liquid and optionally adjusting the concentration of ionic and/or dissolved species in that liquid. By this method and mass exchanger providing a two-phase treatment agent, it is possible to simultaneously deliver gaseous species (e.g. oxygen) into the treated liquid, while making use of the high heat capacity of the liquid phase of the treatment agent to transfer significant heat into or from the treated liquid.

An Oxygenator as a medical instrument includes at least one first hollow fiber membrane layer comprised of a plurality of integrated first hollow fiber membranes, and forms a shape of a cylindrical body as a whole, and at least one second hollow fiber membrane layer disposed at the outer circumferential side of the first hollow fiber membrane layer in a state of being concentric with the first hollow fiber membrane layer, has a plurality of integrated second hollow fiber membranes, and forms a shape of a cylindrical body as a whole. Moreover, each of the first hollow fiber membranes is wound around a central axis, and each of the second hollow fiber membranes is wound around a central axis. The number of times the second hollow fiber membranes are wound is smaller than the number of times the first hollow fiber membranes are wound.

A production method for a medical instrument includes a plurality of integrated hollow fiber membrane producing a base material forming a cylindrically-shaped body. Each of the hollow fiber membranes sequentially passes through a first point, a second point, a third point, a fourth point, and a fifth point that are set on a core member. In an outward path heading toward the third point from the second point, the hollow fiber membrane reaches the third point from the second point at the shortest distance while being wound in the circumferential direction of the core member. Moreover, in a homeward path heading toward the fifth point from the fourth point, the hollow fiber membrane reaches the fifth point from the fourth point at the shortest distance while being wound in the circumferential direction of the core member in the same direction as in the case of the outward path.

Improvements introduced in adsorption filter for inhaled halogenated anesthetics for cardiopulmonary bypass. It relates to an adsorption filter (10) of the type pertaining to the field of medical devices, more specifically, used to adsorb inhaled halogenated anesthetics that are eliminated through the output of the membrane oxygenators (20) of the cardiopulmonary bypass circuit (CPB); said filter (10) contains a hollow reservoir (11) for preservation of adsorber elements (ED) of the activated charcoal type (30), said reservoir (11) being of tubular cylindrical form, and it receives on one of the free extremities (11a) a cover (12) whose internal diameter (d1) is greater than the external diameter (d2) of the cylindrical reservoir (11), so as to produce an access chamber (C1) for the input of the inhaled anesthetic (AI) that, in turn, penetrates through a tubular member (12a) in the central portion of the cover (12), where a tube (Tb1) for connection with the oxygenator device (20) is installed.

A blood processing apparatus may include a heat exchanger and a gas exchanger. At least one of the heat exchanger and the gas exchanger may be configured to impart a radial component to blow flow through the heat exchanger and/or gas exchanger. The heat exchanger may be configured to cause blood flow to follow a spiral flow path.

In one exemplary embodiment, a wearable extracorporeal life support device includes a catheter fluidly connected to a pump and first and second modular extracorporeal life support components. The device may also be configured to be attached to a garment. The pump and the first and second modular extracorporeal life support components may be fluidly connected in series. The pump and the first and second modular extracorporeal life support components may also be fluidly connected in parallel. The first modular extracorporeal life support component may be a lung membrane and the second modular extracorporeal life support component may be a dialysis membrane.

Introduced here are pressure-mitigation apparatuses able to mitigate the pressure applied to a human body by the surface of an object. A controller device can be fluidically coupled to a pressure-mitigation device that includes a series of selectively inflatable chambers. When a pressure-mitigation device is placed between a human body and a surface, the controller device can continuously, intelligently, and autonomously circulate air through the chambers of the pressure-mitigation device. As further discussed below, the controller device may cause the chambers to be selectively inflated, deflated, or any combination thereof. Such an approach is useful in a variety of contexts. For example, pressure-mitigation apparatuses may be used to improve treatment of patients suffering from respiratory illnesses and patients who are partially or completely immobilized for extended durations (e.g., as part of a medical procedure).

A blood oxygenator is disclosed comprising a housing, a blood inlet, a blood outlet, a spiral volute, a gas inlet, an oxygenator fiber bundle, and a gas outlet. The housing encloses the fiber bundle and provides the structure for the blood flow path and connectors. The fiber bundle comprises gas-exchange membranes which transfer oxygen to the blood and remove carbon dioxide when the blood flows across the membranes. The spiral volute guides the blood to flow through the fiber bundle. A gas flow chamber receives sweep gas containing oxygen and distributes the sweep gas into the fiber membranes, which gas is then exchanged with the blood being oxygenated.

The invention relates to a cannula (1) for injecting a fluid (F1) into a body cavity (5), comprising: a main lumen (LP) for the fluid to flow in a first direction; an accessory reperfusion lumen (LA) comprising an outlet (20) for discharging the fluid in a second direction; and a device for positioning the cannula in the cavity, the device comprising a stop (41) which can move along an auxiliary lumen (LX) and be deployed in the cavity in order to lock the cannula in position in the cavity,
the outlet (30) of the auxiliary lumen being arranged at a distance (d) from the outlet (20) of the accessory reperfusion lumen such that when the cannula is locked in position in the cavity, the outlet (20) of the accessory reperfusion lumen (LA) is oriented in the cavity such that the collected fluid is discharged in the second direction.

The invention is a cooling unit for a heat exchanger integrated in an oxygenator for the purpose of controlling the temperature of blood conveyed in an extracorporeal blood circuit. The cooling unit has a reservoir in which a liquid is stored, a reaction vessel comprises a reactant and which, in conjunction with the liquid, is able to initiate an endothermal reaction. A fluidic access is generated between the reservoir and the reaction vessel. A fluid line extends at least in part inside the reaction vessel which has an inlet line and outlet line connected to be fluid-tight to a hose system of the heat exchanger.