RESPIRATORY APPARATUS

• US 3,584,621 A
• Filed: 10/31/1968
• Issued: 06/15/1971
• Est. Priority Date: 10/31/1968
• Status: Expired due to Term

• Current Assignee: Bird Forrest Morton, Pohndorf Henry Louis
• Original Assignee: Bird Forrest Morton, Pohndorf Henry Louis
• Inventors: BIRD FORREST MORTON, POHNDORF HENRY LOUIS
• Application Number:
  US04/772,346
• Time in Patent Office: 957 Days
• US Class Current: 128/200.18
• CPC Class Codes: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• CPC Class Codes: A61M 16/0063 Compressors
• CPC Class Codes: A61M 16/0833 T- or Y-type connectors, e.g. Y-piece

Abstract

Respiratory apparatus having a patient adapter in the form of a mouthpiece and a servocontrol valve assembly and exhaust valve assembly mounted on the mouthpiece and carried by the mouthpiece for controlling the inhalation phase and the exhalation phase of the respiratory apparatus.

Claims

1. In a respiratory apparatus of the type having an inhalation phase and an exhalation phase in its operative cycle, and adapted to be connected to a source of gas under pressure, a control and exhaust valve assembly comprising a body, said body having an inlet adapted to be connected to the source of gas under pressure and an outlet adapted to be connected to the airway of the patient, a control valve movable between open and closed positions to control the flow of gas from the inlet to the outlet, a diaphragm mounted within the body and connected to the control valve for moving the control valve between said open and closed positions, said diaphragm providing a first chamber in the body of one side of the diaphragm which is open to the atmosphere and a second chamber in the body which is in communication with said outlet, magnetic means for adjusting the forces required for moving the control valve between open and closed positions, an exhaust valve carried by the body for venting the second chamber to the atmosphere, and a patient adapter carrying said control and exhaust valve assembly and having an airway therein in communication with the outlet, said patient adapter and said control valve and exhaust assembly being of a size so that they can be held by the hand of a patient.

2. Respiratory apparatus as in claim 1 wherein said body is formed with holes for exposing said second chamber to the atmosphere together with an exhaust diaphragm mounted outside the second chamber closing said holes in said body.

3. Respiratory apparatus as in claim 2 together with a valve member carried by said control valve and being disposed in said second chamber and being moved to a position to cover the holes in the body when the control valve is moved to the position during the inspiratory phase.

4. Respiratory apparatus as in claim 1 together with an annular skirt mounted on said body and extending from the second chamber to define an exhaust port, said skirt having an inwardly and upwardly turning portion at its distal end defining a trough to receive exhalation products carried through the exhaust port from the patient.

5. Respiratory apparatus as in claim 1 wherein said magnetic means mounted on one side of the diaphragm comprises a first magnet mounted in the body and a first armature plate carried by the control valve and wherein the magnetic means on the other side of the diaphragm comprises a second magnet mounted in the body and a second armature plate.

6. Respiratory apparatus as in claim 1 together with means for supplying gas under pressure from the control and exhaust valve assembly to the venturi assembly.

7. Respiratory apparatus as in claim 1 wherein said body is formed in two body sections and wherein the outer annular margin of said diaphragm is secured Between the two body sections.

8. In a respiratory apparatus of a type having an inhalation phase and an exhalation phase in its operative cycle, a body, said body having an inlet adapted to be connected to a source of gas under pressure and an outlet adapted to be connected to the airway of the patient, a control valve movable between open and closed positions to control the flow of gas from the inlet to the outlet, a diaphragm mounted within the body and connected to the control valve for moving the control valve between said open and closed positions, said diaphragm providing a first chamber in the body on one side of the diaphragm which is open to the atmosphere and a second chamber in the body which is adapted to be placed in communication with the airway of the patient, adjustable magnetic means for attracting said control valve to an open position and additional adjustable magnetic means for attracting said control valve to a closed position, said body being formed with holes for exposing said second chamber to the atmosphere together with an exhaust diaphragm mounted outside the second chamber closing said holes in said body, a valve member carried by said control valve and being disposed in said second chamber and being moved to a position to cover the holes in the body when the control valve is moved to the position during the inspiratory phase, said last named valve member being slidably and rotatably mounted on said control valve to permit movement of the control valve member in an axial direction after the valve member closes said holes.

9. In a respiratory apparatus, an air compressor, a flow rate control valve for adjusting the rate of flow of compressed air from the compressor, a control and exhaust valve assembly connected to the flow rate valve, said control and exhaust valve assembly comprising a body having an inlet for receiving the compressed gases and an outlet for delivering the compressed gases, a control valve movable between open and closed positions to control the flow of compressed gases from the inlet to the outlet, a diaphragm connected to the control valve and disposed in the body to provide first and second chambers on opposite sides of the diaphragm, the first chamber being exposed to the atmosphere and the second chamber adapted to be exposed to the airway of the patient, a patient adapter adapted to be connected to the patient and having a flow passage, means mounting said control valve and exhaust valve assembly so that it is carried by the patient adapter, a venturi assembly having a flow passage therein in communication with the flow passage in the patient adapter, means for delivering a jet of air from the control valve and exhaust valve assembly to the venturi assembly, and an exhaust valve carried by the body for venting the second chamber to the atmosphere, the said body being formed with openings for venting the second chamber to the atmosphere, said exhaust valve comprising a flexible diaphragm carried by the body exterior of the second chamber, and a flexible rotor disposed in the second chamber and carried by the control valve for closing the openings which are adapted to vent the second chamber to the atmosphere.

10. Apparatus as in claim 9 wherein said rotor is slidably mounted on said control valve to permit movement of the control valve independent of movement of the rotor.

11. In a respiratory apparatus, an air compressor, a flow rate control valve for adjusting the rate of flow of compressed air from the compressor, a control and exhaust valve assembly connected to the flow rate valve, said control and exhaust valve assembly comprising a body having an inlet for receiving the compressed gases and an outlet for delivering the compressed gases, a control valve movable between open and closed positions to control the flow of compressed gases from the inlet to the outlet, a diaphragm connected to the control valve and disposed in the body to provide first and second chambers on opposite sides of the diaphragm, the First chamber being exposed to the atmosphere and the second chamber being exposed to the airway of the patient, magnet means for controlling the forces required to move said control valve between open and closed positions, a patient adapter adapted to be connected to the patient and having a flow passage, means mounting said control valve and exhaust valve assembly so that it is carried by the patient adapter, a venturi assembly having a flow passage therein in communication with the flow passage in the patient adapter, a nebulizer connected between the venturi assembly and the patient adapter, means for delivering a jet of air from the control valve and exhaust valve assembly to the venturi assembly, and an exhaust valve carried by the body for venting the second chamber to the atmosphere.

12. Apparatus as in claim 11 wherein said body is formed with openings for venting the second chamber to the atmosphere and wherein said exhaust valve comprises a flexible diaphragm carried by the body exterior of the second chamber.

13. Apparatus as in claim 11 together with a yieldable gate valve closing off said flow passage in said venturi assembly from the airway of the patient.

14. A respiratory apparatus as in claim 11 wherein said control and exhaust valve assembly and said venturi assembly are formed as a unitary breathing head assembly.

15. A respiratory apparatus as in claim 14 wherein said means mounting the control valve and exhaust valve assembly with the patient adapter includes means to selectively shift the angular position of the control valve in a vertical plane with respect to the flow axis of the patient adapter flow passage to vary the inspiratory pressure supplied to the patient.

16. A respiratory apparatus as in claim 11 wherein said control and exhaust valve assembly has a flow passage therethrough and wherein said flow passage in said venturi assembly is in communication and in line with the flow passage in the control and exhaust valve assembly.

17. A respiratory apparatus as in claim 16, wherein said nebulizer has a passage therethrough and wherein said nebulizer is mounted so that its passage therethrough is in alignment with the passage in the venturi assembly and the passage in the control and exhaust valve assembly.

18. A respiratory apparatus as in claim 11 where said control valve movable between open and closed positions includes means permitting manual grasping of the control valve to shift it between open and closed positions.