# US 2019/0167886 A1 · Dual chamber blood reservoir > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167886 A1 - Document ID: US20190167886A1 - Status: Published application - Kind: A1 - Application number: 16/273,459 - Filed: 2019-02-12 - Published: 2019-06-06 - Earliest claimed: 2011-07-12 - Assignees: Sorin Group Italia S.r.l. - Applicants: Sorin Group Italia S.r.l. - Inventors: Claudio Silvestri; Gabriele Tommasi - Web page: https://patentgrep.com/patent/US20190167886A1 ## CPC - A61M 1/3627: {Degassing devices; Buffer reservoirs; Drip chambers; Blood filters} - 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 1/3632: {Combined venous-cardiotomy reservoirs} - A61M 1/3638: {with a vapour trap} - A61M 1/3666: {Cardiac or cardiopulmonary bypass, e.g. heart-lung machines} - A61M 2202/0413: Blood - A61M 2205/75: with filters - 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 A blood reservoir may be used in combination with other elements such as a heart lung machine (HLM), oxygenator, heat exchanger, arterial filter and the like to form an extracorporeal blood circuit that may be employed in a procedure such as a bypass procedure. The blood reservoir may be configured to receive, filter and store blood from a number of sources including vent blood (from within the heart), venous blood (from a major vein), purge blood (from a sampling line) and cardiotomy or suction blood (from the surgical field). ## Claims ### Claim 1 An extracorporeal blood circuit comprising: a heart lung machine; an oxygenator; a sampling line downstream of the oxygenator; and a blood reservoir including a first vent blood inlet, a venous blood inlet and a purgers port for accepting blood from the sampling line; wherein the blood reservoir is configured to accommodate blood from the sampling line without causing excessive gaseous microembolic activity within the blood from the sampling line. ### Claim 2 (depends on 1) The extracorporeal blood circuit of claim 1, wherein the blood reservoir includes a purgers funnel in fluid communication with the purgers port, with the venous blood inlet extending downwardly through an interior of the purgers funnel, the purgers funnel being configured to permit the blood from the sampling line to flow downwardly along an exterior surface of the venous blood inlet. ### Claim 3 (depends on 1) The extracorporeal blood circuit of claim 1, wherein the blood reservoir includes a purgers funnel in fluid communication with the purgers port and a defoamer disposed such that the purgers funnel extends through the defoamer and at least part of the purgers funnel extends below the defoamer. ### Claim 4 (depends on 1) The extracorporeal blood circuit of claim 1, wherein the blood reservoir includes a purgers funnel having an upper portion, a lower portion and an intervening central portion, the upper portion of the purgers funnel in fluid communication with the purgers port. ### Claim 5 (depends on 4) The extracorporeal blood circuit of claim 4, comprising a venous tube in fluid communication with the venous blood inlet and extending within the purgers funnel, such that the lower portion of the purgers funnel is configured to extend alongside a portion of the venous tube. ### Claim 6 (depends on 5) The extracorporeal blood circuit of claim 5, wherein the lower portion of the purgers funnel has an inner diameter that is greater than an outer diameter of the venous tube such that blood exiting the purgers funnel slides down an exterior surface of the venous tube. ### Claim 7 (depends on 6) The extracorporeal blood circuit of claim 6, comprising an elongate filter disposed such that the venous tube extends downwardly inside the elongate filter. ### Claim 8 (depends on 7) The extracorporeal blood circuit of claim 7, comprising a reservoir housing and wherein the elongate filter extends to near a lower surface of the reservoir housing. ### Claim 9 (depends on 4) The extracorporeal blood circuit of claim 4, comprising a first vent tube in fluid communication with the first vent blood inlet and extending external to the lower portion of the purgers funnel, wherein the first vent tube extends downwardly within the upper portion of the purgers funnel and passes to an exterior thereof through a first aperture formed in the central portion of the purgers funnel. ### Claim 10 (depends on 9) The extracorporeal blood circuit of claim 9, comprising a second vent blood inlet and a second vent tube in fluid communication with the second vent blood inlet and extending external to the lower portion of the purgers funnel, wherein the second vent tube extends downwardly within the upper portion of the purgers funnel and passes to an exterior thereof through a second aperture formed in the central portion of the purgers funnel. ### Claim 11 An extracorporeal blood circuit comprising: a heart lung machine; an oxygenator; a sampling line downstream of the oxygenator; and a blood reservoir including: a vent blood inlet; a venous blood inlet; a purgers port for accepting blood from the sampling line; a purgers funnel having an upper portion, a lower portion and an intervening central portion, the upper portion in fluid communication with the purgers port; and a defoamer situated so the purgers funnel extends through the defoamer and at least part of the lower portion of the purgers funnel extends below the defoamer. ### Claim 12 (depends on 11) The extracorporeal blood circuit of claim 11, wherein the venous blood inlet extends downwardly through an interior of the purgers funnel and the purgers funnel is configured to permit the blood from the sampling line to flow downwardly along an exterior surface of the venous blood inlet. ### Claim 13 (depends on 11) The extracorporeal blood circuit of claim 11, comprising a releasable barrier, wherein the blood reservoir includes an activated section and a non-activated section, and the releasable barrier is situated between the activated section and the non-activated section and configured to be released to permit blood within the activated section to enter the non-activated section in a situation requiring additional blood. ### Claim 14 (depends on 13) The extracorporeal blood circuit of claim 13, wherein the non-activated section comprises an elongate filter. ### Claim 15 (depends on 13) The extracorporeal blood circuit of claim 13, comprising a porous media disposed to dissipate velocity of blood flowing from the activated section to the non-activated section.