US 12,623,044 B2Granted

Safety valve sheet, breathing tube, breathing tube assembly and breathing mask

AssigneeBmc Medical Co., Ltd.

InventorsLong He, Mingzhao Zhou, Zhi Zhuang

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Abstract

A safety valve sheet, a breathing tube, a breathing tube assembly and a breathing mask are provided. The safety valve sheet is used for being arranged in the breathing tube which is provided with a safety valve hole of the breathing mask, the safety valve sheet comprises a sheet body, and the sheet body comprises an outer side surface being capable of covering the safety valve hole, wherein a protrusion is formed on the outer side surface, and the protrusion is used for being contacted with an inner side surface of a hole edge of the safety valve hole when the sheet body covers the safety valve hole to form an exhaust gap between the outer side surface and the hole edge. The safety valve sheet is simple in structure and can effectively reduce exhaust noise after being applied to the breathing mask.

Claims12

Dependent claims

A breathing tube assembly, comprising a breathing tube and a safety valve sheet, wherein a safety valve hole is formed in a tube wall of the breathing tube, and the safety valve sheet is capable of being movably arranged in the breathing tube;

and the safety valve sheet comprises a covering state being capable of covering the safety valve hole and an opening state being capable of opening the safety valve hole;
wherein, in the covering state, an exhaust gap is arranged between the safety valve sheet and a hole edge of the safety valve hole;
wherein the safety valve sheet comprises a sheet body, and the sheet body comprises an outer side surface being capable of covering the safety valve hole, wherein a plurality of protrusions are formed on the outer side surface, and the plurality of protrusions are used for being contacted with an inner side surface of the hole edge of the safety valve hole when the sheet body covers the safety valve hole to form a plurality of exhaust gaps between the outer side surface and the hole edge;
and/or,
the plurality of protrusions are formed on the inner side surface of the hole edge of the safety valve hole, and the plurality of protrusions are used for being contacted with an outer side surface of a safety valve sheet when the safety valve sheet covers the safety valve hole inside the breathing tube to form a plurality of exhaust gaps between the outer side surface and the hole edge, wherein the plurality of protrusions are provided and arranged at intervals along a circumferential direction of the hole edge.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/790,141Filed 28 Dec 2020
Priority: CN 201911421000.831 Dec 2019
Published: US 2023/0043056 A19 Feb 2023
Granted: 12 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

A61M 16/20
Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators ; Tracheal tubes: valves specially adapted to…
A61M 16/0003
Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators ; Tracheal tubes: accessories therefor, e.g.…
A61M 16/06
Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators ; Tracheal tubes: respiratory or anaesthetic masks
A61M 16/0816
Bellows; Connecting tubes ; Water traps; Patient circuits: joints or connectors