公开(公告)号：US4628926A

公开(公告)日：1986-12-16

申请号：US676516

申请日：1984-11-29

申请人： David T. Duncan ,  John McElligott ,  David M. Lipscomb ,  Charles W. Williams

发明人： David T. Duncan ,  John McElligott ,  David M. Lipscomb ,  Charles W. Williams

IPC分类号： A61M16/00

CPC分类号： A61M16/0045 ,  Y10S128/914

摘要： A rebreather apparatus for negating temporary hearing threshold shifts due to noise exposure and other physiological conditions related to CO.sub.2 concentration. One embodiment of rebreather is formed with three chambers. A mouthpiece communicates with a first chamber and this chamber has limited access to the second chamber sandwiched thereto. A third chamber is sandwiched to the second chamber and has limited communication with the second chamber. The third chamber has limited communication therefrom to the atmosphere thus providing an elongated air pathway from the atmosphere to the mouthpiece. This elongated pathway with the restrictions of the openings between chambers achieves an accumulation of carbon dioxide from a user's breath. Accordingly, air inhaled from the rebreather elevates the carbon dioxide content in the lungs of a user and thus in the blood stream of the user. In another embodiment, the outer (third) chamber is collapsible during nonuse so that the rebreather may be carried in the pocket of the user and the second and third chambers have two portions symmetrically positioned on opposite surfaces of the first chamber. In another embodiment, at least the second and third chambers are collapsible. In a further embodiment, the rebreathing device comprises two collapsible chambers. The device is made from inexpensive materials so that, if desired, it may be disposed of after use.

摘要翻译： 一种用于由于噪声暴露和与CO2浓度相关的其他生理条件而消除临时听觉阈值偏移的循环呼吸器。 循环呼吸器的一个实施例由三个腔室形成。 接口与第一室连通，该室具有限制的进入夹在其中的第二室。 第三室被夹在第二室中并且与第二室有连通的限制。 第三室具有有限的通信到大气，从而提供从大气到吸嘴的细长的空气通路。 这种具有室之间的开口限制的细长路径实现了用户呼吸中二氧化碳的积聚。 因此，从呼吸器吸入的空气提高了使用者的肺中的二氧化碳含量，从而提高了使用者的血流。 在另一个实施例中，外部（第三）室在不使用期间是可折叠的，使得循环呼吸器可以被携带在使用者的口袋中，并且第二和第三腔室具有对称地位于第一腔室的相对表面上的两个部分。 在另一实施例中，至少第二和第三腔室是可折叠的。 在又一实施例中，再呼吸装置包括两个可折叠室。 该装置由便宜的材料制成，使得如果需要，它可以在使用后处理。

公开(公告)号：US4508116A

公开(公告)日：1985-04-02

申请号：US454036

申请日：1982-12-28

申请人： David T. Duncan ,  David M. Lipscomb ,  John McElligott ,  Charles W. Williams

发明人： David T. Duncan ,  David M. Lipscomb ,  John McElligott ,  Charles W. Williams

IPC分类号： A61M16/00

CPC分类号： A61M16/0045 ,  Y10S128/914

摘要： A rebreather apparatus for negating temporary hearing threshold shifts due to noise exposure and other physiological conditions related to CO.sub.2 concentration. The rebreather is formed with three chambers. A mouthpiece communicates with a first chamber and this chamber has limited access to the second chamber sandwiched thereto. A third chamber is sandwiched to the second chamber and has limited communication with the second chamber. The third chamber has limited communication therefrom to the atmosphere thus providing an elongated air pathway from the atmosphere to the mouthpiece. This elongated pathway with the restrictions of the openings between chambers achieves an accumulation of carbon dioxide from a user's breath. Accordingly, air inhaled from the rebreather elevates the carbon dioxide content in the lungs of a user and thus in the blood stream of the user. This elevated carbon dioxide content has been shown to negate and/or prevent temporary hearing threshold shifts due to excessive noise exposure. In one embodiment the outer (third) chamber is collapsible during nonuse so that the rebreather may be carried in the pocket of the user and the second and third chambers have two portions symetrically positioned on opposite surfaces of the first chamber. In another embodiment at least the second and third chambers are collapsible. The device is made from inexpensive materials so that, if desired, it may be disposed of after use.

摘要翻译： 一种用于由于噪声暴露和与CO2浓度相关的其他生理条件而消除临时听觉阈值偏移的循环呼吸器。 呼吸器由三个腔室组成。 接口与第一室连通，该室具有限制的进入夹在其中的第二室。 第三室被夹在第二室中并且与第二室有连通的限制。 第三室具有有限的通信到大气，从而提供从大气到吸嘴的细长的空气通路。 这种具有室之间的开口限制的细长路径实现了用户呼吸中二氧化碳的积聚。 因此，从呼吸器吸入的空气提高了使用者的肺中的二氧化碳含量，从而提高了使用者的血流。 已经显示这种升高的二氧化碳含量否定和/或防止由于过度的噪声暴露引起的临时听觉阈值偏移。 在一个实施例中，外（第三）室在不使用期间可折叠，使得循环呼吸器可以被携带在使用者的口袋中，并且第二和第三腔室具有对称地定位在第一腔室的相对表面上的两个部分。 在另一个实施例中，至少第二和第三腔室是可折叠的。 该装置由便宜的材料制成，使得如果需要，它可以在使用后处理。