摘要:
The affected technical field is that of medical equipment, and the invention relates to a device for oxygenating blood in extrabodily circulation with heat exchanger. The technical problem is that of providing an oxygenating device capable of handling in an optimum way different blood flow rates, as required by the varying ranges of patient's weight, from newly born children to full adults. The solution resides in providing a device comprising plural oxygenation modules, each of which has at least one member (9,10) for diffusing oxygen through the blood, and one shutter member (17,18) for shutting off such fluids and communicating to a chamber (22) wherethrough the pipes (24) of a heat exchanger extend, the modules communicating, in turn, to a collecting chamber (38) through a layer of an antifoaming material (35,36).
摘要:
Procede de formation d'une unite a membrane de diffusion (10) comprenant un assemblage d'une pluralite de tubes-membranes capillaires separes, et application de lignes de jonction en materiau adhesif (26, 28, 32) en travers des tubes-membranes paralleles en des points espaces des extremites; on laisse le materiau adhesif durcir pour assembler les tubes a membranes.
摘要:
A hollow fiber-type artificial lung having an enclosed heat exchanger, having a first housing (1) and a second housing (21) connected together coaxially. A gas exchange chamber (8) is defined in the first housing by a pair of spaced walls (6,7) and a bundle (15) of hollow fibers (5) designed for gas exchange is extended lengthwise and between the pair of walls. The hollow fiber bundle is preferably constricted at the central portion (16) to increase the packing ratio of the hollow fibers. The second housing (21) that is connected to the first housing (1) by way of the blood chamber (38) has a pair of spaced apart walls (26,27), and multiple tubes (25) are provided to extend lengthwise between the pair of walls to effect heat exchange between the circulating heat exchange medium and the blood flowing through the multiple tubes.
摘要:
A dialyser has a membrane assembly (12) comprising two superposed conduits partially define, and separated, by a transfer membrane wall. The walls of the conduit are provided with furrowing (38 or 39) extending with a component along the conduits. Blood is pumped through one conduit by a roller pump (21) and dialysate is pumped in counter current through the other conduit by a roller pump (24), The conduits communicate with separate chambers in flexible bladders (16) along each side edge of the conduits and the bladders are alternately compressed by rollers (27) to provide a superimposed reciprocatory flow component on the blood and dialysate in a direction transverse to the length of the conduits. This reciprocatory flow component, in conjunction with the furrows, produces vortexes in, and good mixing of, the blood and dialysate in their respective conduits and hence enhanced contact of each of these liquids with the transfer membrane wall.
摘要:
A blood processing apparatus (150) comprising a housing (152), a heat exchanger core (170), a heat exchanger element (172) disposed about the heat exchanger core (170), a cylindrical shell (174) arranged coaxially about the heat exchanger element (172), a gas exchanger element (176) disposed about the cylindrical shell (120) and an elongate collector (180) in fluid communication with a shell aperture (178) such that blood may exit the cylindrical shell (174) through the shell aperture (178), may enter the elongate collector (180) and may flow through the gas exchanger element (176) in a circumferential direction.
摘要:
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.
摘要:
Apparatus (100) for oxygenating and pumping blood includes a housing defining a blood flow path including, in series, a gas collection plenum (72), a pump space (55) and a blood oxygenation element (70). A pump disposed in the pump space is configured to draw blood from the gas collection plenum and propel blood from the pump space through a heat exchanger (102) and the blood oxygenation element. The heat exchanger includes a heat exchange plate and a coolant space (103).
摘要:
Apparatus and methods for removing gas from a blood handling system. A filter apparatus (40) for monitoring and removing gas is provided comprising of a gas removal/blood filter (46), a sensor (45) to sense the presence of gas, and a valve (36) operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.