Negative inspiratory force manometer apparatus
AssigneeMercury Enterprises, Inc.
InventorJeffrey B. Ratner
Life of this patent
Estimating the term…
Abstract
The apparatus is connected by tubing to a patient. The apparatus has a manometer on one side in communication with an entrance port conveying ambient air to the patient. A spring loaded cap is depressed to block air inspired by the patient and cause such air to move a diaphragm in the manometer so that the inspired negative air pressure of the patient can be recorded. As soon as the cap is released a spring opens the entrance port to continue normal flow of ambient air to the patient.
Claims14
An apparatus for measuring and recording maximum patient inspiratory air pressure, the apparatus comprising:
- a housing containing a patient port for connection to the patient and an entrance port open to ambient air;
- a manometer mounted within the housing;
- a means mounted over entry port for blocking the entrance port and causing the patient inspiratory air pressure to create a vacuum in the manometer;
- a channel within the housing connecting the patient port and entrance port for permitting flow of patient inspiratory air when the entrance port is not blocked;
- and
- a means for recording the patient inspiratory air pressure and viewing the said recording from outside the housing.
An apparatus having a patient port connected to a patient, the apparatus comprising:
- a housing containing the patient port and an entrance port for flow of inspired air to the patient, and a manometer mounted within the housing for measuring and recording maximum patient inspiratory air pressure;
- a cap mounted over the entrance port so that, it can block entrance of ambient air to the patient when depressed and cause the inspired air to move a diaphragm in the manometer, a first and a second side of the apparatus adopted to be in fluid communication when the spring loaded cap is depressed;
- and
- the manometer containing a means for recording and viewing the maximum negative air pressure from the patient when the entrance port is blocked.
A method for determining the amount of maximum negative air pressure being inspired by a patient, the method comprising:
- providing an apparatus in communication with the patient, the apparatus having a top and bottom housing sealed together, a first side of the top and bottom housing containing a patient port and an entrance port for flow of inspired air to the patient, a second side of the top and bottom housing containing a manometer;
- providing a spring loaded cap mounted over the entrance port;
- depressing the spring loaded cap to close off an opening from the entrance port and causing patient inspiratory air to create a vacuum in the manometer on the second side of the apparatus;
- and
- recording the patient negative air pressure on the manometer.
Dependencies are inferred from the claim text.