"In some embodiments, the knob may rotate through about 180 degrees when moving between the first and second positions. The knob and stem may rotate about a first axis and the plug may be shaped to define a second axis that may extend between the first and second ends. The second axis may be orthogonal to the first axis. The plug may be coupled to the stem by a tab that positions the plug in offset relation with the stem. In alternative embodiments, the plug may be coupled directly to the stem.
"According to this disclosure, the end wall may be circular and the housing may further include a cylindrical wall that may extend from the end wall toward the first port and that may define a chamber adjacent the second, third, and fourth ports. The first manually operable member may include a knob that may be situated outside the chamber, a stem that may extend from the knob into the chamber through the cylindrical wall, and a plug that may be situated inside the chamber.
"In some embodiments, the nebulizer connector may include a T-shaped connector that may have a first tubular segment with a first end that may connect to the fourth port and a second end spaced from the first end. The T-shaped connector may have a second tubular segment that may extend from the first segment in perpendicular relation therewith. The second segment may have an open end sized to couple to a nebulizer container.
"According to this disclosure, at least one of the first and second ends of the first segment of the T-shaped connector may carry a one-way valve. For example, both of the first and second ends of the first segment of the T-shaped connector may carry a one-way valve. Each of the one-way valves may comprise an umbrella valve, for example. The one-way valve may be normally closed and may open in response to a person's inhalation through the first port.
"According to an aspect of this disclosure, a respiratory therapy device may include a housing that may have a first port to receive a person's exhaled breath and that may have an interior region. A standard positive expiratory pressure (PEP) device may be coupled to the housing and may have a first passage that selectively communicates with the interior region of the housing. An oscillatory PEP device may be coupled to the housing and may have a second passage that selectively communicates with the interior region of the housing. At least one selector may be movable to select whether the standard PEP device or the oscillatory PEP device is in communication with the interior region of the housing. At least one adjuster may be movable to adjust the operation of at least one of the standard PEP device and the oscillatory PEP device.
"The at least one adjuster may include, for example, a single knob that may be rotatable to adjust the operation of both the standard PEP device and the oscillatory PEP device. The at least one adjuster may include a pair of second adjusters, a first of which may adjust operation of the standard PEP device and a second of which may adjust operation of the oscillatory PEP device. The respiratory therapy device may further include a nebulizer connector that may be coupled to the housing and that may have a first one-way valve which normally may be closed and which may open when a person inhales through the first port.
"Additional features, which alone or in combination with any other feature(s), such as those listed above and those listed in the claims, may comprise patentable subject matter and will become apparent to those skilled in the art upon consideration of the following detailed description of various embodiments exemplifying the best mode of carrying out the embodiments as presently perceived.
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