Flow control adapter for performing spirometry and pulmonary function testing
First Claim
1. A system for performing spirometry and pulmonary function testing comprising:
- a flow control adapter, an incentive spirometer, a tracheostomy tube and an exhalation spirometer that measures forced expiratory volume, the flow control adapter further comprising a subject port adapted to be in fluid communication with an airway of a tracheostomized patient and directly coupled to the tracheostomy tube, an inspiratory port directly coupled to the incentive spirometer, an expiratory port coupled to the exhalation spirometer, and an adapter body that defines an inspiratory fluid flow path between the inspiratory port and the subject port and that defines an expiratory fluid flow path between the subject port and the expiratory port during use, the adapter body including;
an inspiratory one-way valve positioned within the adapter body and coupleable to the inspiratory port such that the inspiratory one-way valve substantially prevents air that flows substantially along the inspiratory fluid flow path from flowing through the inspiratory port during expiration; and
an expiratory one-way valve positioned within the adapter body and coupleable to the expiratory port such that the expiratory one-way valve allows air flowing substantially along the expiratory fluid flow path to flow through the expiratory port during expiration.
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Accused Products
Abstract
A breathing circuit for a tracheostomized patient provides respiratory care and pulmonary function testing. The breathing circuit includes a flow control adapter that directs an inspiratory flow of air and an expiratory flow of air. The flow control adapter includes a subject port for coupling to a tracheostomy tube, an inspiratory port for coupling to an incentive spirometer, and an expiratory port. The flow control adapter further includes an adapter body and a one-way valve. The adapter body is configured to define an inspiratory fluid flow path between the inspiratory port and the subject port and to define an expiratory fluid flow path between the subject port and the expiratory port. The one-way valve substantially prevents air that flows generally along the inspiratory fluid flow path from flowing through the expiratory port during inspiration and allows air flowing generally along the expiratory fluid flow path to flow through the expiratory port during expiration.
18 Citations
13 Claims
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1. A system for performing spirometry and pulmonary function testing comprising:
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a flow control adapter, an incentive spirometer, a tracheostomy tube and an exhalation spirometer that measures forced expiratory volume, the flow control adapter further comprising a subject port adapted to be in fluid communication with an airway of a tracheostomized patient and directly coupled to the tracheostomy tube, an inspiratory port directly coupled to the incentive spirometer, an expiratory port coupled to the exhalation spirometer, and an adapter body that defines an inspiratory fluid flow path between the inspiratory port and the subject port and that defines an expiratory fluid flow path between the subject port and the expiratory port during use, the adapter body including; an inspiratory one-way valve positioned within the adapter body and coupleable to the inspiratory port such that the inspiratory one-way valve substantially prevents air that flows substantially along the inspiratory fluid flow path from flowing through the inspiratory port during expiration; and an expiratory one-way valve positioned within the adapter body and coupleable to the expiratory port such that the expiratory one-way valve allows air flowing substantially along the expiratory fluid flow path to flow through the expiratory port during expiration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A breathing circuit comprising:
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an incentive spirometer; a tracheostomy tube adapted to be coupled to a tracheostomized patient; an exhalation spirometer that measures forced expiratory volume; and a flow control adapter having an adapter body that includes an inspiratory one-way valve and an expiratory one-way valve secured within the adapter body, the adapter body having an inspiratory port directly coupled to the incentive spirometer and a subject port directly coupled to the tracheostomy tube, the flow control adapter having an inspiratory mode controlled by the inspiratory and expiratory one-way valves to fluidically couple the incentive spirometer to the tracheostomy tube while substantially preventing fluid communication between the exhalation spirometer and at least one of the tracheostomy tube and the incentive spirometer, and the flow control adapter further having an expiratory mode controlled by the inspiratory and expiratory one-way valves to fluidically couple the tracheostomy tube to the exhalation spirometer while substantially preventing fluid communication between the incentive spirometer and at least one of the tracheostomy tube and the exhalation spirometer. - View Dependent Claims (10, 11, 12, 13)
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Specification