Assisted breathing apparatus and tubing therefore

• US 5,617,847 A
• Filed: 10/12/1995
• Issued: 04/08/1997
• Est. Priority Date: 10/12/1995
• Status: Expired due to Fees

• Current Assignee: Stephen L. Howe
• Original Assignee: Stephen L. Howe
• Inventors: Howe, Stephen L.
• Primary Examiner(s): Lewis, Aaron J.
• Application Number:
  US08/542,070
• Time in Patent Office: 544 Days
• Field of Search: 128/204.23, 128/204.26, 128/205.19, 128/911, 128/912, 128/202.27
• US Class Current: 128/204.23
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/0841 for sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/205 used for exhalation control
• CPC Class Codes: A61M 16/206 Capsule valves, e.g. mushroom, membrane valves
• CPC Class Codes: Y10S 128/911 Unilimb inhalation-exhalation breathing tubes
• CPC Class Codes: Y10S 128/912 Connections and closures for tubes delivering fluids to or from the body

Abstract

A tubing assembly is disclosed for use between an exhalation valve and a ventilator for providing assisted breathing to a patient. The ventilator has a patient air outlet, a exhalation valve control outlet and a sensor outlet connected to a sensing mechanism. The exhalation valve has a first outlet to a tracheotomy connector, a second outlet to ambient atmosphere, an inlet and a control air inlet. The exhalation valve is switched between an inhalation position and an exhalation position by air pressure at the control air inlet. The tubing assembly comprises an exhalation valve connection, a ventilator-sensor connection, an intermediate tube, a sensor tube and an exhalation valve control tube assembly. The exhalation valve connection is attached at one end to the intermediate tube and at the other end to the inlet. The ventilator-sensor connection is attached at one end to the patient air outlet and at the other end to the intermediate tube. The sensor tube is connected at one end to the ventilator-sensor connection and at the other end to the sensor outlet. The exhalation valve control tube assembly is connected at one end to the control air inlet and at the opposite end to the exhalation valve control outlet whereby the ventilator controls the air pressure at the control air inlet. The exhalation valve control tube assembly extends through the exhalation valve connection, through the intermediate tube and through the ventilator-sensor connection.

Claims

1. In combination, a tubing assembly between an exhalation valve and a ventilator, the combination comprising:

the ventilator having a patient air outlet, a exhalation valve control outlet and a sensor outlet operatively connected to a sensing mechanism;

the exhalation valve having a first outlet in gaseous communication with a patient'"'"'s throat, a second outlet in gaseous communication with the ambient atmosphere, an inlet and a control air inlet, the exhalation valve having inhalation position in which gaseous communication is established between the inlet and the first outlet and an exhalation position in which gaseous communication is established between the first outlet and the second outlet, the exhalation valve being switched between the inhalation position and the exhalation position by air pressure exerted at the control air inlet;

an intermediate tube providing gaseous communication between the patient air outlet and the inlet;

an exhalation valve connection attached at one end to the intermediate tube and at the other end to the inlet of the exhalation valve, the exhalation valve connection having a first L-shaped portion formed integrally therewith, the first L-shaped portion having a first leg extending laterally through the exhalation valve connection, the second leg extending longitudinally within the exhalation valve connection in a direction opposite the exhalation valve;

a ventilator-sensor connection attached at one end to the patient air outlet and at the other end to the intermediate tube opposite the exhalation valve connection, the ventilator-sensor connection having a second L-shaped portion formed integrally therewith, and a sensor tube opening therethrough, the second L-shaped connector having a first leg extending laterally through the ventilator-sensor connection, the second leg extending longitudinally within the ventilator-sensor connection in a direction towards the exhalation valve;

a sensor tube connected at one end to the ventilator-sensor connection and at the other end to the sensor outlet providing gaseous communication between the sensor mechanism of the ventilator and the ventilator-sensor connection; and

an exhalation valve control tube connected at one end to the control air inlet and at the opposite end to the exhalation valve control outlet providing gaseous communication between the control air inlet and the exhalation valve control outlet whereby the ventilator controls the air pressure at the control air inlet, the exhalation valve control tube extending through the first tube opening, through the intermediate tube and extending through the second tube opening.

2. The assisted breathing apparatus of claim 1 wherein the sensor tube, the exhalation valve control tube and the intermediate tube have different diameters.

3. A tubing assembly for use between an exhalation valve and a ventilator for providing assisted breathing to a patient, the tubing assembly comprising:

an intermediate tube;

an exhalation valve connection attached at one end to the intermediate tube and at the other end to an inlet of an exhalation valve;

a ventilator-sensor connection attached at one end to a patient air outlet of a ventilator and at the other end to the intermediate tube opposite the exhalation valve connection;

a sensor tube connected at one end to the ventilator-sensor connection and at the other end to a sensor outlet on a ventilator providing gaseous communication between a sensor mechanism of a ventilator and the ventilator-sensor connection; and

an exhalation valve control tube assembly providing gaseous communication between a control air inlet of an exhalation valve and an exhalation valve control outlet of a ventilator, the exhalation valve control tube assembly extending through the exhalation valve connection, through the intermediate tube and extending through the ventilator-sensor connection; and

wherein the exhalation valve control tube assembly further includes a valve-connector tube, a first L-shaped portion, an internal tube, a second L-shaped portion and a connector-ventilator tube, the first L-shaped portion having a first leg extending laterally through the exhalation valve connection and a second leg extending longitudinally within the exhalation valve connection in a direction opposite an exhalation valve, the second L-shaped connector having a first leg extending laterally through the ventilator-sensor connection and a second leg extending longitudinally within the ventilator-sensor connection in a direction towards an exhalation valve, the valve connector tube being attached at one end to the first leg of the first L-shaped portion and at the other end to a control air inlet of an exhalation valve, the opposing ends of the internal tube connected to the second legs of the first and second L-shaped portions, the connector-ventilator tube being connected at one end to the first leg of the second L-shaped portion and at the other end to an exhalation valve control outlet on a ventilator.

4. The tubing assembly of claim 3 wherein the first and second L-shaped portions are formed integrally with the exhalation valve connector and the ventilator-sensor connector, respectively.