EP0049461A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device for oxygenating blood in extrabodily circulation with heat exchanger
Assignee: Dideco SpA
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Filing: 1981-09-29
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Granted: —
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Expires: 2001-09-29
Abstract
Abstract 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).
Inventors
- 👤 Libero Luppi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:30
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; A61M1/322; A61M1/325; A61M1/36; A61M1/3621; A61M1/3623; Y; Y10; Y10S; Y10S128/00; Y10S128/03; Y10S261/00; Y10S261/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
107 words
A device for oxygenating blood in extrabodily circulation with heat exchanger, characterized in that it comprises a plurality of oxygenating modules, each module comprising at least one diffuser of oxygen (9,10) through the blood having a shutter member (17,18) for shutting off the two fluids and being included in a distributor whereto there open a venous blood manifold (3) and an oxygen manifold (5), and an underlying chamber (22) wherethrough there extend the pipes (24) of a heat exchanger, said oxygenating modules being in communication, through a layer of an antifoaming material (35,36), with an arterial blood collecting and storing chamber (38) provided with outlet fittings (39,40).
Claim 2
Independent Claim
107 words
A device for oxygenating blood in extrabodily circulation with heat exchanger, characterized in that it comprises a plurality of oxygenating modules, each module comprising at least one diffuser of oxygen (9,10) through the blood having a shutter member (17,18) for shutting off the two fluids and being included in a distributor whereto there open a venous blood manifold (3) and an oxygen manifold (5), and an underlying chamber (22) wherethrough there extend the pipes (24) of a heat exchanger, said oxygenating modules being in communication, through a layer of an antifoaming material (35,36), with an arterial blood collecting and storing chamber (38) provided with outlet fittings (39,40).
Claim 3
Dependent Claim
59 words
A device according to Claim 1, characterized in that the diffuser of oxygen through the blood comprises a stub pipe (9,10) arranged with its axis substantially parallel to the longitudinal axis of the underlying chamber (22) and in communication with the venous blood manifold (3), formed through the wall with suitably inclined holes communicating with the oxygen manifold (5).
Claim 4
Dependent Claim
40 words
A device according to Claim 2, characterized in that the oxygen manifold (5) leading from the distributor is included within a cover (6) of said distributor adapted to lock in an underlying position a membrane constituting the oxygen filter (7).
Claim 5
Dependent Claim
104 words
A device according to Claim 1, characterized in that the shut-off member (17,18) equipping each diffuser of oxygen through the blood comprises a plunger (17,18) of an elastic material such as rubber, slidable and in contact with the inner wall of the diffuser and the wall of a bore (9a) coaxial thereto formed in the body of the distributor between the two limit positions of complete shut-off of both fluids and free admission of the same to the underlying chamber, the plungers (17,18) of the diffusers belonging to one module being provided with operating members (20,21) interconnected together to make such an operation simultaneous.
Claim 6
Dependent Claim
68 words
A device according to Claim 4, characterized in that the operating member (20,21) equipping each plunger (17,18) comprises a metal rod (20,21) extending from the opposite face thereof to that facing the underlying chamber (22), and protruding out of the distributor to reach with its end a handle (19) which connects the ends of the rods (20,21) extending from the plungers (17,18) pertaining to the same oxygenation module.
Claim 7
Independent Claim
39 words
A device according to one or more of the preceding claims, characterized in that a layer of non-siliconed polyurethane (23) is provided in the upper region of the chamber (22) wherethrough the pipes (24) of said heat exchanger extend.
Claim 8
Independent Claim
92 words
A device according to one or more of the preceding claims, characterized in that said heat exchanger comprises a plurality of pipes (24) adapted for conveying the water which enters and leaves through connectors (28,29) located at the same level, intended for supplying or subtracting heat to/from the blood, arranged in staggered rows perpendicularly to the direction of the blood flow in a space portion delimited by walls extending substantially vertical in the normal position of use of the device and opening to a space portion delimited by said antifoaming material (35,36).
Claim 9
Independent Claim
57 words
A device according to one or more of the preceding claims, characterized in that said antifoaming material (35,36) interposed between the oxygenation modules and the arterial blood collecting chamber (38) comprises a double layer (35,36) of a material suitably siliconed to different grades, delimited on the side of the collecting chamber (38) by a filtering mesh (7).
Claim 10
Independent Claim
91 words
A device according to one or more of the preceding claims, characterized in that the venous blood inlet connector (2) in the related manifold (3) comprises a fitting (57) connected with one end to said manifold (3) and being provided, at the other end thereof, with a flange (58)withathreaded edge ,adapted for engaging the inside threads of a ring nut (59) having an abutment (59a) for retention and compression against said flange (58) of a disk member (60) drilled at the connections of stub pipes (60a, 60b, 60c) of varying diameters.
Claim 11
Dependent Claim
35 words
A device according to Claim 9, characterized in that the fitting (57) has a first branch-off (57a) for connection to a cardiotome, and a second branch-off (57b) for connection to a small sampling pipe (41).
Claim 12
Dependent Claim
41 words
A device according to Claim 9, characterized in that the stub pipes of varying diameters are three in number, correspondingly to the optimization of the flow for the three applications of the device, in the infant, pediatric and adult modes thereof.
Claim 13
Independent Claim
45 words
A device according to one or more of the preceding claims, characterized in that it comprises two small pipes (41,42) with one end at the venous blood inlet (2) and arterial blood outlet (38), respectively, and the other end connected to a withdrawal tap (43,44).
Claim 14
Dependent Claim
88 words
A device according to Claim 12, characterized in that each withdrawal tap (43,44) comprises a fixed body (45) having a passage (46) connected to a said small pipe (41) and a passage (47) connected to the arterial blood collecting chamber (38), and a rotary body (48) having a substantially diametrical bore (49) which can be brought by manual actuation with one end (49b) at one or the other of the passages (46,47) through the fixed body (45), the other end (49a) being adapted for connection to a syringe.
Claim 15
Independent Claim
48 words
A device according to one or more of the preceding claims, characterized in that it comprises an outlet connector (56) for the gases released from the interior, and a safety anti-implosion valve effective to protect against implosions as said connector (56) is connected to a forced vacuum line.
Claim 16
Independent Claim
27 words
A device according to one or more or the preceding claims, characterized in that it comprises an arterial blood level probe (55) in the collecting chamber (38).
Claim 17
Independent Claim
33 words
A device according to one or more of the preceding claims, characterized in that it comprises a probe (53,54) for detecting the blood temperature at the venous blood inlet and arterial blood outlet.
Claim 18
Independent Claim
28 words
A device according to one or more of the preceding claims, characterized in that it comprises fittings (50,51) for introducing substances into the blood and for quick filling.
References Cited (Backward Citations)
No citation records indexed.
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