# US 11,439,787 B2 · Portable air filtration and disinfection device for a respirator system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,787 B2 - Document ID: US11439787B2 - Status: Granted - Kind: B2 - Application number: 16/865,306 - Filed: 2020-05-02 - Published: 2021-09-02 - Granted: 2022-09-13 - Earliest claimed: 2020-05-02 - Applicants: Haiping Liu; Yang Michelle Sun - Inventors: Haiping Liu; Yang Michelle Sun - Web page: https://patentgrep.com/patent/US11439787B2 ## CPC - A61M 16/1065: {in the expiratory path} - A61M 16/1055: {bacterial} - A61M 16/107: {in the inspiratory path} - A62B 23/02: for respirators - A62B 23/025: {the filter having substantially the shape of a mask (surgical face masks A41D13/11)} - A62B 23/06: Nose filters - B01D 46/0028: {provided with antibacterial or antifungal means} - B01D 46/0036: {by adsorption or absorption} - B01D 47/021: {by bubbling the gas through a liquid bath} - B01D 50/60: Combinations of devices covered by groups B01D46/00 and B01D47/00 - A61L 2209/21: Use of chemical compounds for treating air or the like - A61L 2209/211: Use of hydrogen peroxide, liquid and vaporous - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0833: {T- or Y-type connectors, e.g. Y-piece} - A61M 16/0875: {Connecting tubes} - A61M 16/208: {Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves} - A61M 2205/3348: Pressure measurement using a water column - A61M 2205/7509: for virus - A61M 2205/7518: bacterial - A61M 2205/7536: allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes - A61M 2205/7545: for solid matter, e.g. microaggregates - B01D 46/12: in multiple arrangements - B01D 2279/65: for the sterilisation of air - 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)} - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) ## Abstract A portable air filtration and disinfection device for a respirator system includes a casing, an inhalation filter assembly, and an exhalation filter assembly. The inhalation filter assembly includes an intake duct for receiving breathing air, an inhalation gas filter for filtering the breathing air, and an inhalation duct to provide the filtered breathing air. The exhalation filter assembly includes an exhalation duct for receiving exhaled air, an exhalation gas filter and an exhalation liquid filter for filtering and disinfecting the exhaled air, and an outlet duct for releasing the filtered and disinfected exhaled air. ## Claims ### Claim 1 A portable air filtration and disinfection device for a respirator system, the device comprising: a casing having a first chamber and a second chamber, wherein the first chamber and the second chamber are separated by a chamber spacer; an inhalation filter assembly housed by the first chamber, the inhalation filter assembly comprising: an intake duct for receiving air from an external environment or source, an inhalation gas filter for filtering the received air from the external environment or source, and an inhalation duct to provide the filtered air to a person for breathing; and an exhalation filter assembly housed by the second chamber, the exhalation filter assembly comprising: an exhalation duct for receiving air exhaled by the person, an exhalation gas filter and an exhalation liquid filter for filtering and disinfecting the received exhaled air from the person, and an outlet duct for releasing the filtered and disinfected exhaled air to the external environment or source. ### Claim 2 (depends on 1) The device of claim 1, wherein the inhalation filter assembly further comprises an inhalation liquid filter for filtering and disinfecting the received air from the external environment or source. ### Claim 3 (depends on 1) The device of claim 1, wherein the inhalation gas filter or the exhalation gas filter includes one or more layers of a filtering material. ### Claim 4 (depends on 1) The device of claim 1, wherein the inhalation gas filter or the exhalation gas filter include one or more layers of an adsorption material. ### Claim 5 (depends on 1) The device of claim 1, wherein the exhalation liquid filter comprises a disinfection liquid. ### Claim 6 (depends on 1) The device of claim 1, wherein the inhalation duct and the exhalation are configured to be coupled with a mask. ### Claim 7 (depends on 6) The device of claim 6, wherein the mask is a face mask, a nasal mask, or a mouth piece. ### Claim 8 (depends on 1) The device of claim 1, wherein the inhalation filter assembly further comprises a plurality of first bayonets for fastening the inhalation gas filter and the exhalation filter assembly further comprises a plurality of second bayonets for fastening the exhalation gas filter. ### Claim 9 (depends on 1) The device of claim 1, wherein the intake duct and the outlet duct are configured to be coupled with a ventilator. ### Claim 10 (depends on 1) The device of claim 1, wherein the exhalation duct has a bottom sidewall which comprises a plurality of small holes for generating bubbles of the received exhaled air. ### Claim 11 A portable air filtration and disinfection device for a respirator system, the device comprising: an inhalation filter assembly comprising: an intake duct for receiving air from an external environment or source, an inhalation gas filter for filtering the received air from the external environment or source, and an inhalation duct connected with a mask for providing the filtered air to a person for breathing via the mask; an exhalation filter assembly comprising: an exhalation duct connected with the mask for receiving air exhaled by the person via the mask, an exhalation gas filter and an exhalation liquid filter for filtering and disinfecting the received exhaled air from the person, and an outlet duct for releasing the filtered and disinfected exhaled air to the external environment or source; and a casing housing the inhalation filter assembly and the exhalation filter assembly. ### Claim 12 (depends on 11) The device of claim 11, wherein the inhalation filter assembly further comprises an inhalation liquid filter for filtering and disinfecting the received air from the external environment or source. ### Claim 13 (depends on 11) The device of claim 11, wherein the intake duct and the outlet duct are coupled with a ventilator. ### Claim 14 (depends on 11) The device of claim 11, wherein the inhalation gas filter or the exhalation gas filter includes one or more layers of a filtering material. ### Claim 15 (depends on 11) The device of claim 11, wherein the inhalation gas filter or the exhalation gas filter include one or more layers of an adsorption material. ### Claim 16 A portable air filtration and disinfection device for a respirator system, the device comprising: a casing having a first chamber and a second chamber, wherein the first chamber and the second chamber are separated by a chamber spacer; an inhalation filter assembly housed by the first chamber, the inhalation filter assembly comprising: an intake duct connected with a ventilator for receiving air from the ventilator, an inhalation gas filter for filtering the received air from the ventilator, and an inhalation duct to provide the filtered air to a person for breathing; and an exhalation filter assembly housed by the second chamber, the exhalation filter assembly comprising: an exhalation duct for receiving air exhaled by the person, an exhalation gas filter and an exhalation liquid filter for filtering and disinfecting the received exhaled air from the person, and an outlet duct connected with the ventilator for releasing the filtered and disinfected exhaled air to the ventilator. ### Claim 17 (depends on 16) The device of claim 16, wherein the inhalation filter assembly further comprises an inhalation liquid filter for filtering and disinfecting the received air from the ventilator. ### Claim 18 (depends on 16) The device of claim 16, wherein the inhalation duct and the exhalation duct are coupled with a mask. ### Claim 19 (depends on 16) The device of claim 16, wherein the inhalation gas filter or the exhalation gas filter includes one or more layers of a filtering material. ### Claim 20 (depends on 16) The device of claim 16, wherein the inhalation gas filter or the exhalation gas filter include one or more layers of an adsorption material.