# US 11,992,295 B2 · Blood sensor assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,992,295 B2 - Document ID: US11992295B2 - Status: Granted - Kind: B2 - Application number: 17/209,663 - Filed: 2021-03-23 - Published: 2021-09-30 - Granted: 2024-05-28 - Earliest claimed: 2020-03-24 - Assignees: Merit Medical Systems, Inc. - Applicants: Merit Medical Systems, Inc. - Inventors: Rick Russell; Scott Brown; Jonathan Cheney; Luca Salmaso - Web page: https://patentgrep.com/patent/US11992295B2 ## CPC - A61B 5/02055: {Simultaneously evaluating both cardiovascular condition and temperature} - A61B 5/02141: {Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits (A61B5/02233, A61B5/0235 take precedence)} - A61B 5/6866: {Extracorporeal blood circuits, e.g. dialysis circuits} - A61M 1/3609: {Physical characteristics of the blood, e.g. haematocrit, urea} - A61M 1/3623: {Means for actively controlling temperature of blood} - A61M 1/3639: {Blood pressure control, pressure transducers specially adapted therefor} - A61M 1/3666: {Cardiac or cardiopulmonary bypass, e.g. heart-lung machines} - A61M 1/369: {Temperature treatment} - A61B 2562/0247: Pressure sensors - A61B 2562/0271: Thermal or temperature sensors - A61B 2562/166: the sensor is mounted on a specially adapted printed circuit board - A61M 2230/30: Blood pressure (A61M2230/04 takes precedence) - A61M 2230/50: Temperature - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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 Devices used to sense physiologic blood parameters are disclosed. The devices may be configured to sense at least two physiologic blood parameters at substantially a common site of an extracorporeal perfusion circuit. The devices may include a pressure sensor and a temperature sensor. The temperature sensor may be in direct contact with the blood. ## Claims ### Claim 1 A sensor device, comprising: a housing comprising a gel well; a printed circuit board member; a first sensor electrically coupled to the printed circuit board member; and a second sensor electrically coupled to the printed circuit board member, wherein the first sensor is configured to measure a first parameter of a physiologic fluid and the second sensor is configured to measure a second parameter of the physiologic fluid at a common site of a perfusion circuit, wherein the first sensor is at least partially disposed within the gel well of the housing, and wherein a first end of the first sensor protrudes above a rim of the gel well. ### Claim 2 (depends on 1) The sensor device of claim 1, wherein the first sensor is in direct contact with the physiologic fluid. ### Claim 3 (depends on 1) The sensor device of claim 1, wherein the first sensor is a temperature sensor, and wherein the first parameter is temperature. ### Claim 4 (depends on 3) The sensor device of claim 3, wherein the temperature sensor comprises a cladding. ### Claim 5 (depends on 4) The sensor device of claim 4, wherein the cladding comprises any one of polyimide, stainless steel, copper, carbon, aluminosilicate, ceramic, glass glaze, parylene, and polytetrafluoroethylene. ### Claim 6 (depends on 5) The sensor device of claim 5, wherein the cladding is any one of a dead-end tube and a dip coating. ### Claim 7 (depends on 1) The sensor device of claim 1, wherein the first end of the first sensor protrudes above the rim of the gel well a distance of between 0.001 inch and 0.100 inch. ### Claim 8 (depends on 1) The sensor device of claim 1, wherein the second sensor is a pressure sensor, and the second parameter is fluid pressure. ### Claim 9 (depends on 1) The sensor device of claim 1, wherein the second sensor is disposed at a base of the gel well of the housing, wherein the gel well is filled with a gel, and wherein the gel surrounds the second sensor. ### Claim 10 (depends on 1) The sensor device of claim 1, further comprising a third sensor to measure a third physiologic parameter. ### Claim 11 A sensor assembly, comprising: a housing comprising a gel well; a printed circuit board member; a pressure sensor electrically coupled to the printed circuit board member; a temperature sensor electrically coupled to the printed circuit board member; and a connector electrically coupled to the printed circuit board; wherein the temperature sensor is configured to measure a blood temperature and the pressure sensor is configured to measure a blood pressure at a common site of a perfusion circuit, and wherein the temperature sensor is at least partially disposed within the gel well of the housing. ### Claim 12 (depends on 11) The sensor assembly of claim 11, wherein a first end of the temperature sensor is flush with a rim of the gel well. ### Claim 13 (depends on 11) The sensor assembly of claim 11, wherein a first end of the temperature sensor protrudes above a rim of the gel well. ### Claim 14 A method of measuring physiologic parameters of a fluid, comprising: obtaining a sensor device comprising: a housing comprising a gel well; a first sensor; a second sensor, wherein the first sensor is at least partially disposed within the gel well of the housing, and wherein a first end of the first sensor protrudes above a rim of the gel well; and exposing the sensor device to the fluid; wherein the first sensor is in direct contact with the fluid. ### Claim 15 (depends on 14) The method of claim 14, wherein the first sensor is a temperature sensor. ### Claim 16 (depends on 14) The method of claim 14, further comprising measuring a temperature and pressure of the fluid at a common site.