# US 2019/0167882 A1 · Oxygenator comprising a heating element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167882 A1 - Document ID: US20190167882A1 - Status: Published application - Kind: A1 - Application number: 16/323,812 - Filed: 2017-07-06 - Published: 2019-06-06 - Earliest claimed: 2016-08-08 - Assignees: Xenios AG - Applicants: Xenios AG - Inventors: Georg MATHEIS - Web page: https://patentgrep.com/patent/US20190167882A1 ## CPC - A61M 1/1698: {Blood oxygenators with or without heat-exchangers (intracorporal A61M1/1678; manufacturing of membranes therefor B01D67/00; semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi-permeable membranes characterised by their material B01D71/00)} - A61M 1/1601: {Control or regulation} - A61M 1/1629: {with integral heat exchanger} - A61M 1/1664: {with temperature control} - A61M 1/3623: {Means for actively controlling temperature of blood} - A61M 1/369: {Temperature treatment} - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3368: Temperature - A61M 2205/3633: thermally insulated - A61M 2205/3653: by Joule effect, i.e. electric resistance - A61M 2205/3673: thermo-electric, e.g. Peltier effect, thermocouples, semi-conductors - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract The invention relates to an oxygenator with a housing wall, defining a housing chamber with a blood inlet and a blood outlet, a gas inlet and a gas outlet, and also with a heating element which is arranged in the oxygenator between the blood inlet and blood outlet in order to control the temperature of the blood flowing through the housing chamber. The oxygenator also comprises an electric connection and the heating element has an electric resistor which is designed as a wire. The invention also relates to a method for controlling the heat emission at the heating element of an oxygenator by measuring the flow of blood through the oxygenator and the power of a pump influencing the flow, with the heating power being adjusted in accordance therewith. ## Claims ### Claim at position 1 1-28. (canceled) ### Claim 29 An oxygenator (10) with a housing wall (11), defining a housing chamber (12) with a blood inlet (2), a blood outlet (3), a gas inlet (4) and a gas outlet (5), a heating element (13) which has an electric resistor (14) and is arranged in the oxygenator between the blood inlet (2) and blood outlet (3) in order to control the temperature of the blood flowing through the housing chamber (12), an electric connection (15, 16) and a temperature control device (25), wherein the heating element (13) delivers a different heating power at different locations in the housing chamber (12). ### Claim 30 (depends on 29) The oxygenator according to claim 29, wherein the heating element (13) is arranged in the housing chamber (12). ### Claim 31 (depends on 29) The oxygenator according to claim 29, wherein the heating element (13) is arranged in the housing wall (11). ### Claim 32 (depends on 29) The oxygenator according to claim 29, wherein it has membranes, such as hollow fibers in particular. ### Claim 33 (depends on 29) The oxygenator according to claim 29, wherein it has an encapsulation layer for holding fluid lines, and the heating element (13) is arranged in this encapsulation layer. ### Claim 34 (depends on 29) The oxygenator according to claim 29, wherein it has at least one temperature sensor (24). ### Claim 35 (depends on 29) The oxygenator according to claim 29, wherein the temperature controller (25) sets or controls the temperature of the heating element (13) individually at various locations. ### Claim 36 (depends on 29) The oxygenator according to claim 29, wherein the heating element (13) has a plurality of heating sub-elements (28, 29, 30) positionable at various locations of the oxygenator. ### Claim 37 (depends on 36) The oxygenator according to claim 36, wherein the heating element (27) has a plurality of heating sub-elements (28, 29, 30) actuatable separately from one another. ### Claim 38 (depends on 29) The oxygenator according to claim 29, wherein the heating element (13) is arranged in the oxygenator between the gas inlet (4) and gas outlet (5) in order to also control the temperature of gas flowing through the housing chamber (12). ### Claim 39 (depends on 29) The oxygenator according to claim 29, wherein it has a heat-conducting arrangement for conducting heat to the heating element (13). ### Claim 40 (depends on 29) The oxygenator according to claim 29, wherein it has a heat-conducting arrangement for distributing heat from the heating element (13) in the housing chamber (12). ### Claim 41 (depends on 29) The oxygenator according to claim 29, wherein it has an insulation layer in order to insulate blood flowing in the housing chamber. ### Claim 42 (depends on 29) The oxygenator according to claim 29, wherein it has a reflection layer in order to reflect heat radiation from blood flowing in the housing chamber. ### Claim 43 (depends on 41) The oxygenator according to claim 41, wherein the layer is transparent or partially transparent. ### Claim 44 (depends on 29) The oxygenator according to claim 29, wherein the resistor (14) is a metal, preferably copper or a copper-nickel alloy. ### Claim 45 (depends on 29) The oxygenator according to claim 29, wherein the resistor (14) comprises a plastic or carbon or graphite. ### Claim 46 (depends on 29) The oxygenator according to claim 29, wherein it has a central opening with a mandrel-shaped holding element. ### Claim 47 (depends on 46) The oxygenator according to claim 46, wherein the mandrel-shaped holding element comprises the heating element. ### Claim 48 A method for controlling the heat emission at a heating element (13) of an oxygenator (10), in which the flow rate of blood through the oxygenator (10) or the power of a pump influencing the flow rate are measured and the heating power is adjusted on this basis. ### Claim 49 (depends on 48) The method according to claim 48, wherein the heating element (13) has a plurality of heating sub-elements (28, 29, 30) actuatable separately from one another, which are actuated such that the temperature difference between the temperature of the blood at the heating sub-element (28, 29, 30) and the temperature of the heating sub-element (28, 29, 30) does not exceed a predetermined value.