US 2026/0283884 A1Published application

Personal respiratory isolation system

AssigneesThe Regents of the University of Michigan, Inspire Rx, LLC

InventorsShalini Sarala Kota, Sridhar Kota, Kevin R. Ward, David Hornick, Benjamin S. Bassin

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Abstract

A personal respiratory isolation system (PRIS) provides a personal, negative pressure environment for a patient or user that reduces contamination and spread of pathogens exhaled by the patient into the environment. The PRIS includes an enclosure to receive the patient’s head (such as a hood and a drape) and a negative pressure source which draws ambient air into the interior of the enclosure and draws air within the enclosure’s interior (including the exhalations of the patient, including any contaminants and/or pathogens) out of the enclosure via a fluid port into a container for biohazard processing or disposal. The PRIS may allow positive air pressure therapeutic treatments to be delivered to the patient within the negative pressure environment, and the PRIS may maintain a constant pressure within the interior of the enclosure. The PRIS may include a transparent, hinged face shield for ease of patient observation and/or access.

Claims24

Dependent claims

A personal respiratory isolation system (PRIS), comprising:

an enclosure configured to be worn by a user while the user is mobile and such that a nose and a mouth of the user are contained within the enclosure, the enclosure including:
a cap, a flexible hood, a rigid hood, a helmet, or another type of hard shell disposed to cover at least a non-facial portion of a head of the user;
an aperture configured to receive at least a portion of the head of the user into an interior of the enclosure, and
one or more unsealed components providing one or more gaps, the one or more gaps including the aperture;
and
a flow output port coupled to a negative pressure source operable to draw ambient air, from an environment in which the user located, via the one or more gaps into an interior of the enclosure and simultaneously draw at least one of air or fluid that is disposed within the interior of the enclosure through the flow output port to thereby provide a negative pressure within the interior of the enclosure, the at least one of the air or fluid that is drawn through the flow output port including fluid that has been at least one of exhaled or expelled by the user.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/692,802Filed 29 May 2026
Priority: 30 Mar 2020
Published: 24 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification69 codes

A61B 90/05
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61G 10/023
With artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms: rooms for the treatment of patients at over- or…
A41D 13/1153
Characterised by their shape: with a hood
A41D 13/1184
Protective face masks, e.g. for surgical use, or for use in foul atmospheres: with protection for the eyes, e.g. using shield or visor

Family

Application63/002,120Us provisional application · filed 30 Mar 2020
Application63/005,117Us provisional application · filed 3 Apr 2020
Application63/010,208Us provisional application · filed 15 Apr 2020
Application17/910,317Continuation · filed 30 Mar 2021
Application19/692,802Continuation
US 12,661,292 B2Related patent
US 2023/0032878 A1Published application
US 2026/0283884 A1This patent

From the US filing history. Foreign family members aren’t listed.