Device and process for extracorporeal treatment by citrate anticoagulant
First Claim
1. Device for treating blood by extracorporeal circulation comprising:
- a filter having a first chamber and a second chamber separated by a semi-permeable membrane, an arterial line connected to the first chamber of the filter, a venous line issuing from the first chamber of the filter, a channel used for pre-infusion of a substance for local anticoagulation and linked to the arterial line, a purge channel issuing from the second chamber of the filter, an air separator on the venous line, a line for post-infusion of a solution at least partially re-establishing the ionic equilibrium of the blood downstream of the air separator, an air detector downstream of the post-infusion line.
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0 Petitions
Accused Products
Abstract
The invention concerns a device for treating blood by extracorporeal circulation (101) comprising a filter (102) having a first chamber (103) and a second chamber (104) separated by a semi-permeable membrane (105), an arterial line (106) connected to the first chamber (103) of the filter (102), a venous line (108) issuing from the first chamber (103) of the filter (102), a channel (109) used for pre-infusion of a substance for regional anticoagulation and linked to the arterial line (106), a purge channel (110) issuing from the second chamber (104) of the filter (102), an air separator (112) on the venous line (108), a line (112) for post-infusion of a solution at least partially re-establishing the ionic equilibrium of the blood downstream of the air separator (111), and an air detector (113) downstream of the post-infusion line (112).
Finally, the invention concerns a method for treating blood by extracorporeal circulation.
59 Citations
31 Claims
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1. Device for treating blood by extracorporeal circulation comprising:
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a filter having a first chamber and a second chamber separated by a semi-permeable membrane, an arterial line connected to the first chamber of the filter, a venous line issuing from the first chamber of the filter, a channel used for pre-infusion of a substance for local anticoagulation and linked to the arterial line, a purge channel issuing from the second chamber of the filter, an air separator on the venous line, a line for post-infusion of a solution at least partially re-establishing the ionic equilibrium of the blood downstream of the air separator, an air detector downstream of the post-infusion line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. Method of treating blood, comprising the following steps:
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infusing a substance for regional anti-coagulation into an arterial line carrying blood extracted from a patient, passing the extracted blood through a filter and to a venous line, after passage of the blood through the filter, eliminating the presence of air in the blood circulating in the venous line, after elimination of air, infusing a solution at least partially re-establishing the ionic equilibrium of the blood, after infusion of said re-establishing solution detecting the presence of air, in the event of air being detected, clamping the venous line downstream of the post-infusion, without passing through a second air separator placed downstream of the first air separator.
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Specification
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- Resources
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Current AssigneeGambro Lundia AB (Baxter International Inc.)
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Original AssigneeGambro Lundia AB (Baxter International Inc.), Hospal International Marketing Management, SNC
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InventorsBene, Bernard
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current604/5.01
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CPC Class CodesA61M 1/342 Adding solutions to the blo...A61M 1/3434 with pre-dilution and post-...A61M 1/3437 downstream of the filter, e...A61M 1/3458 having electrolytes not pre...A61M 1/3626 Gas bubble detectorsA61M 1/3672 Means preventing coagulationA61M 1/3675 Deactivation
