# US 2022/0184427 A1 · Respiratory pump arrangement for personal respiratory isolation and method of use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0184427 A1 - Document ID: US20220184427A1 - Status: Published application - Kind: A1 - Application number: 17/545,043 - Filed: 2021-12-08 - Published: 2022-06-16 - Earliest claimed: 2020-12-10 - Assignees: FlexSys, Inc. - Applicants: FlexSys Inc. - Inventors: Shalini Sarala Kota; Sridhar Kota; Kevin Ward; David C. Hornick; Robert Schartow; James D. Ervin; Gregory F. Ervin - Web page: https://patentgrep.com/patent/US20220184427A1 ## CPC - A61G 10/005: {Isolators, i.e. enclosures generally comprising flexible walls for maintaining a germ-free environment} - A62B 7/10: with filter elements - A42B 1/04: Soft caps; Hoods - A62B 18/006: {with pumps for forced ventilation (A62B18/045 takes precedence)} - A62B 18/04: Gas helmets - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) - 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) - A42B: HATS; HEAD COVERINGS (headbands A41D20/00; head-scarves A41D23/00) ## Abstract A personal respiratory isolation assembly includes a manifold-filter assembly configured to be attached to a suction port of a respiratory pump. The manifold-filter assembly has a bowl-shaped manifold housing with an inlet adapter configured for connecting a hose, and a filter releasably attachable to the manifold housing. The isolation assembly further comprises an exhaust baffle with a plurality of openings. The exhaust baffle fits a pressure port of the respiratory pump. A method of operating a personal respiratory isolation assembly involves attaching an exhaust baffle to an outlet adapter of a respiratory pump; connecting a manifold housing to a suction port of the respiratory pump with a filter disposed between the manifold housing and the suction port; connecting a hose to an inlet adapter of the manifold housing; attaching the hose to a hose port of a hood; and starting to operate the respiratory pump. ## Claims ### Claim 1 A personal respiratory isolation assembly comprising: a manifold-filter assembly configured to be attached to a suction port of a respiratory pump, the manifold-filter assembly having a bowl-shaped manifold housing with an inlet adapter configured for connecting a hose, and a filter releasably attachable to the manifold housing; and an exhaust baffle with a plurality of openings, the exhaust baffle configured to be attached to a pressure port of the respiratory pump. ### Claim 2 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the manifold-filter assembly is configured for retrofitting commercially available respiratory pumps. ### Claim 3 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the exhaust baffle comprises a connector portion complementary to the inlet adapter of the manifold housing and capable of forming a mated connection with the inlet adapter. ### Claim 4 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the exhaust baffle is cup-shaped and the plurality of openings of the exhaust baffle includes openings extending outward in different directions. ### Claim 5 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the manifold housing has a manifold diameter and a manifold depth, wherein the manifold diameter is greater than the manifold depth. ### Claim 6 (depends on 6) The personal respiratory isolation assembly of claim 6, wherein the inlet adapter has a diameter of a size smaller than or equal to the manifold depth. ### Claim 7 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the bowl-shaped manifold housing includes a cylindrical wall and the inlet adapter surrounds an opening in the cylindrical wall. ### Claim 8 (depends on 1) The personal respiratory isolation assembly of claim 1, wherein the filter includes a ring-shaped filter frame and a filter substrate held by the filter frame, wherein the filter frame is configured for being attached to the manifold housing and to the suction port. ### Claim 9 (depends on 1) The personal respiratory isolation assembly of claim 1, further comprising a removable plug insert dimensioned to form a seal with the inlet adapter while the personal respiratory isolation assembly is not in use. ### Claim 10 (depends on 1) The personal respiratory isolation assembly of claim 1, further comprising a respiratory pump with a pump motor operable to draw air through the inlet adapter and the filter and to expel the air through the exhaust baffle. ### Claim 11 (depends on 1) The personal respiratory isolation assembly of claim 1, further comprising the hose with a coupling portion configured to mate with the inlet adapter of the manifold housing. ### Claim 12 (depends on 1) The personal respiratory isolation assembly of claim 1, further comprising a hood dimensioned to be placed on a human head, the hood including a clear face shield defining a front area behind the face shield, pliable sides, a pliable top, a hose port , and an internal support structure arranged between the hose port and the front area covered by the face shield, the internal support structure configured to facilitate and air flow from the front area to the hose port. ### Claim 13 (depends on 12) The personal respiratory isolation assembly of claim 12, further comprising the hose, wherein the hose establishes a fluid communication between the inlet port of the manifold housing and the hose port of the hood. ### Claim 14 (depends on 12) The personal respiratory isolation assembly of claim 12, wherein the internal support structure comprises a porous material. ### Claim 15 (depends on 14) The personal respiratory isolation assembly of claim 14, wherein the internal support structure comprises reticulated foam. ### Claim 16 (depends on 12) The personal respiratory isolation assembly of claim 12, further comprising an elastic seal disposed along edges of the hood. ### Claim 17 (depends on 12) The personal respiratory isolation assembly of claim 12, further comprising a chin portion beneath the face shield, the chin portion comprising breathable material to allow air to enter the hood through the chin portion. ### Claim 18 (depends on 17) The personal respiratory isolation assembly of claim 17, wherein the chin portion includes filter material for filtering the air entering the hood through the chin portion. ### Claim 19 A method of operating a personal respiratory isolation assembly, the method comprising the following steps: attaching an exhaust baffle to an outlet adapter of a respiratory pump; connecting a manifold housing to a suction port of the respiratory pump with a filter disposed between the manifold housing and the suction port; connecting a hose to an inlet adapter of the manifold housing; attaching the hose to a hose port of a hood; and starting to operate the respiratory pump. ### Claim 20 (depends on 19) The method of claim 19, further comprising the step of inserting a plug insert into the inlet adapter of the manifold housing to form a seal for containing particulates in the manifold housing after the respiratory pump is turned off, thereby creating a particulate-sealed chamber upstream of the filter.