# US 2022/0034764 A1 · Gas sensor module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0034764 A1 - Document ID: US20220034764A1 - Status: Published application - Kind: A1 - Application number: 17/299,171 - Filed: 2019-12-03 - Published: 2022-02-03 - Earliest claimed: 2018-12-03 - Assignees: Mallinckrodt Hospital Products IP Unlimited Company - Applicants: Mallinckrodt Hospital Products IP Unlimited Company - Inventors: Jaron Acker; Peter James Clark; Cedric Assambo; Michael McAtamney; John Klaus; Robin Roehl - Web page: https://patentgrep.com/patent/US20220034764A1 ## CPC - G01N 1/24: Suction devices {(G01N1/22 - G01N1/2294 take precedence)} - A61M 16/04: Tracheal tubes (catheters in general A61M25/00) - A61M 16/085: {Gas sampling} - A61M 16/1005: {with O2 features or with parameter measurement} - A61M 16/104: {specially adapted for anaesthetics (A61M16/18 takes precedence)} - G01N 33/0009: {General constructional details of gas analysers, e.g. portable test equipment (devices for withdrawing samples in the gaseous state G01N1/22)} - A61B 5/082: {Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath (A61B5/083, A61B5/091 take precedence)} - A61B 5/097: Devices for facilitating collection of breath or for directing breath into or through measuring devices - A61M 16/12: by mixing different gases - A61M 16/161: {with means for measuring the humidity} - A61M 2016/1025: {the O2 concentration} - A61M 2016/1035: {the anaesthetic agent concentration} - A61M 2202/0208: Oxygen - A61M 2202/0275: Nitric oxide [NO] - A61M 2205/07: having air pumping means - A61M 2205/12: with interchangeable cassettes forming partially or totally the fluid circuit - A61M 2205/125: with incorporated filters - A61M 2205/3327: Measuring - A61M 2205/3358: Measuring barometric pressure, e.g. for compensation - A61M 2205/3368: Temperature - A61M 2205/70: with testing or calibration facilities - A61M 2205/75: with filters - A61M 2205/8206: battery-operated - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - 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)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A removable gas sensor module is provided for a therapeutic gas delivery device. The gas sensor module includes a sample chamber which receives a sample gas from the therapeutic gas delivery device. A gas detection unit includes a plurality of sensors operable to measure at least one property of the sample gas. The sensors include two or more of a gas detection sensor, a humidity sensor, a temperature sensor, or a combination thereof. The gas sensor module is self-contained within the therapeutic gas delivery device and swappable with another gas sensor module. ## Claims ### Claim 1 A removable gas sensor module for a therapeutic gas delivery device, the gas sensor module comprising: a sample chamber operable to receive a sample gas from the therapeutic gas delivery device; and a gas detection unit comprising a plurality of sensors operable to measure at least one property of the sample gas, wherein the plurality of sensors include two or more of a gas detection sensor, a humidity sensor, a temperature sensor, or a combination thereof, wherein the gas sensor module is self-contained within the therapeutic gas delivery device and swappable with another gas sensor module. ### Claim 2 (depends on 1) The gas sensor module of claim 1, wherein replacement of the gas sensor module results in less than 5 minutes of down time of the measurement of at least one property of the sample gas. ### Claim 3 (depends on 1) The gas sensor module of claim 1, wherein replacement of the gas sensor module results in no down time in delivery of therapeutic gas from the therapeutic gas delivery device. ### Claim 4 (depends on 1) The gas sensor module of claim 1, wherein the gas detection sensor is one or more of an NO sensor, an NO2 sensor, an O2 sensor, or combinations thereof. ### Claim 5 (depends on 1) The gas sensor module of claim 1, wherein the gas detection unit comprises at least two gas detection sensors. ### Claim 6 (depends on 5) The gas sensor module of claim 5, wherein the gas detection unit comprises an NO sensor and an NO2 sensor. ### Claim 7 (depends on 1) The gas sensor module of claim 1, wherein the gas detection unit comprises two or more different sensors. ### Claim 8 (depends on 7) The gas sensor module of claim 7, wherein the gas detection unit comprises one or more gas detection sensors and a humidity sensor. ### Claim 9 (depends on 1) The gas sensor module of claim 1, wherein the at least one property of the sample gas is one or more of a concentration of NO, a concentration of NO2, a concentration of O2, humidity, temperature, or a combination thereof. ### Claim 10 (depends on 1) The gas sensor module of claim 1 further comprising a sensing circuit operable to detect and report the at least one property of the sample gas to a gas analyzer controller in the therapeutic gas delivery device. ### Claim 11 (depends on 1) The gas sensor module of claim 1, wherein the therapeutic gas delivery device is continuously operable when the gas sensor module is replaced. ### Claim 12 (depends on 1) The gas sensor module of claim 1, wherein the sample chamber comprises an inner housing and an outer housing. ### Claim 13 (depends on 1) The gas sensor module of claim 1, wherein the gas detection unit is operable to electronically store or send to the therapeutic gas delivery device serial numbers, calibration data, and/or usage information of the gas sensor module. ### Claim 14 (depends on 1) The gas sensor module of claim 1, wherein the gas sensor module is pre-calibrated and shelf stable for at least 1 month. ### Claim 15 (depends on 14) The gas sensor module of claim 14, wherein the gas sensor module is shelf stable for at least 3 months. ### Claim 16 (depends on 1) A gas sensor assembly comprising: the gas sensor module of claim 1; an assembly inner housing operable to removably receive the gas sensor module; and a gas analyzer unit comprising: a sample tube fluidly connected to the gas delivery device and the gas sensor module operable to receive the sample gas; and a pump connected to the gas sensor module through the sample tube, wherein the pump is operable to pump the sample gas through the gas sensor module. ### Claim 17 (depends on 16) The gas sensor assembly of claim 16, wherein the gas analyzer unit further comprises a gas analyzer controller. ### Claim 18 (depends on 16) The gas sensor assembly of claim 16, wherein the gas analyzer unit further comprises an assembly main housing operable to receive the assembly inner housing, wherein the assembly main housing is within the therapeutic gas delivery device. ### Claim 19 (depends on 16) The gas sensor assembly of claim 16, wherein at least a portion of the sample tube is a Nafion tube. ### Claim 20 (depends on 1) An apparatus comprising: a voltage source; and the gas sensor module of claim 1, wherein the voltage source provides an electrical potential across the plurality of sensors in the gas detection unit to maintain calibration of the plurality of sensors when the gas sensor module is in a non-installed configuration. ### Claim 21 (depends on 20) The apparatus of claim 20, wherein the voltage source is a battery or a power transformer. ### Claim 22 (depends on 20) The apparatus of claim 20, wherein the voltage source ceases to provide electrical potential across the plurality of sensors when the gas sensor module is installed within the therapeutic gas delivery device. ### Claim 23 (depends on 20) The apparatus of claim 20, wherein the current source is internal to the gas sensor module. ### Claim 24 (depends on 1) A method for providing a gas sensor module comprising: calibrating the plurality of sensors in the gas sensor module of claim 1; and providing electrical potential across the plurality of sensors to maintain the calibration of the plurality of sensors.