US 12,420,039 B2
Device for a respiration arrangement
Mikael Löfgren, Mölndal (SE); and Antti Stålnacke, Surte (SE)
Assigned to Monivent AB, Gothenburg (SE)
Appl. No. 17/792,959
Filed by Monivent AB, Gothenburg (SE)
PCT Filed Jan. 20, 2021, PCT No. PCT/EP2021/051179
§ 371(c)(1), (2) Date Jul. 14, 2022,
PCT Pub. No. WO2021/148457, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2050064-1 (SE), filed on Jan. 23, 2020.
Prior Publication US 2023/0033221 A1, Feb. 2, 2023
Int. Cl. A61M 16/00 (2006.01); A61M 16/06 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/0084 (2014.02) [A61M 16/0605 (2014.02); A61M 16/0875 (2013.01); A61M 2016/0027 (2013.01); A61M 2240/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A device for a respiration arrangement comprising:
a conduit having a first opening connectable to an air/gas source, and a second opening connectable to a patient interface, such that a fluid pathway along a longitudinal direction of the conduit is established from the first opening to the second opening;
a flow constriction arranged in the conduit which upon fluid flow through the conduit results in a pressure difference over the flow constriction; and
a first flow guiding element arranged in the conduit between the first opening and the flow constriction, and configured to guide fluid flow to the flow constriction,
wherein the flow constriction at least partly comprises a laminar flow section,
wherein the device further comprises at least one pressure connecting port arranged in pressurized communication with fluid between the flow constriction and the first opening, the at least one pressure connecting port configured to connect to a pressure sensor for measuring fluid pressure, and wherein the at least one pressure connecting port is arranged in the longitudinal direction of the conduit, and
wherein the first flow guiding element comprises:
a shielding portion arranged in the conduit to cover an inlet of the at least one pressure connecting port,
a fluid passage enabling fluid flow between the first opening and the flow constriction, and
at least one pressure conduit arranged to provide a fluid channel between the fluid passage and the at least one pressure connecting port.