Expiratory air reception vessel
OwnerPeter Ganshorninventor
Life of this patent
Estimating the term…
Abstract
A vessel is disclosed for receiving exhaled air in order to measure lung function. The vessel includes a container with two facing inlets which admit exhaled air alternatively. The container houses: either a piston which can slide in the direction of the inlets, and switches which are actuated when the position reaches the wall of the container, whereupon air is admitted through the other inlet; or, two contiguous bags to each of which air is admitted by one inlet so that they move alternately, and a switch which when actuated causes air to be admitted through the other inlet.
Claims10
An expiratory air reception vessel for a measurement of lung function, comprising:
- a closed container having two inlets, said two inlets being disposed opposite to one another and able to be pressurized alternatively with expired air from a patient;
- switching means for changing an inlet of said two inlets which is pressurized at any given time;
- and
- a piston means disposed within said closed container for operating said switching means, said piston means being movable within said container in a direction toward one of the two inlets wherein said one of said two inlets not pressurized at any given time is in contact with the atmosphere.
A expiratory air reception vessel for a measurement of lung function, comprising:
- a container having two inlets disposed therein, said two inlets being able to be alternatively pressurized with an expiration of air wherein one of said two inlets not pressurized at any given time is in contact with the atmosphere;
- two bags disposed adjacent one another within said container, said bags being able to be pressurized by means of one of said two inlets thereby causing said bags to be moved toward one another;
- and,
- switching means for changing an inlet of said two inlets being pressurized when said container is completely filled, said switching means being operable by said bags.
Dependencies are inferred from the claim text.