Relief valve
    7.
    发明授权

    公开(公告)号:US11224716B2

    公开(公告)日:2022-01-18

    申请号:US16067192

    申请日:2016-12-28

    Inventor: Naoyuki Ishikita

    Abstract: A relief valve in which a valve body is automatically properly opened/closed by pressure of gas while having a simple device structure, and a device including the relief valve. In a valve-closed state, a first pressure receiving surface portion receives pressure of gas from a valve hole to smoothly open a valve body, and in an open position after the valve is opened, a pressure receiving area is enlarged to a second pressure receiving surface portion, and the first pressure receiving surface portion and the second pressure receiving surface portion are surrounded by a peripheral wall portion formed on a back surface of the valve body. Thus, the valve body continuously receives the pressure with the pressure of the gas being reduced, thereby allowing the valve-opened state of the valve body to be stably maintained to set pressure.

    Neonatal Chest Splint for Applying Negative Distending Pressure

    公开(公告)号:US20210177690A1

    公开(公告)日:2021-06-17

    申请号:US17184699

    申请日:2021-02-25

    Inventor: Charles Palmer

    Abstract: The present invention relates to devices and methods for assisting breathing in a subject. In one embodiment, the device of the present invention is a splint that can be used to apply negative distending pressure, i.e., outward pull, to one or both of the chest walls and/or the abdomen of a subject. In certain embodiments, the splint comprises an air bladder that can be attached to the skin of the subject's chest and/or abdomen. When the air bladder is inflated, negative distending pressure is applied to the subject's chest and/or abdomen, thereby assisting or promoting respiration. In another embodiment, the splint comprises a piezoelectric material that when activated can provide negative distending pressure to the subject's chest and/or abdomen. In another embodiment, the subject is a neonate. In another embodiment, the inflated air bladder can apply a compressive force on the chest to facilitate expiration, and the removal of secretions in the airways.

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