MANUAL POSITIVE PRESSURE BREATHING DEVICE

• US 3,630,196 A
• Filed: 08/22/1969
• Issued: 12/28/1971
• Est. Priority Date: 08/22/1969
• Status: Expired due to Term

• Current Assignee: Forrest M. Bird, Henry L. Pohndorf
• Original Assignee: Forrest M. Bird, Henry L. Pohndorf
• Inventors: Bird, Forrest M., Pohndorf, Henry L.
• Application Number:
  US04/852,186
• Time in Patent Office: 858 Days
• US Class Current: 128/200.18
• CPC Class Codes: A61M 11/06 of the injector type
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits

Abstract

A manual positive pressure breathing device in which the mainstream gas flow is in axial alignment to provide a laminar flow and utilizing a nebulizer and a manually operated exhalation valve which is located adjacent to the patient'"'"''"'"'s airway.

Claims

1. In a manual positive pressure breathing device adapted to be connected to a source of gas under pressure, a venturi assembly having a venturilike passageway with one end open to the atmosphere, a jet nozzle adapted to be connected to said source of gas under pressure, means mounting the jet nozzle in the venturi assembly so that the jet passing therefrom is directed into the venturilike passageway, a nebulizer having a flow passage extending therethrough in axial alignment with the venturilike passageway, said nebulizer having a jet nozzle therein adapted to be connected to said source of gas under pressure and serving to assist movement of the main stream of air through the nebulizer, a saddle having a flow passage in axial alignment with and in communication with the venturilike passageway in the venturi assembly, said saddle having an exhalation port open to the atmosphere in communication with the flow passage and a seat surrounding said port, a manually operated exhalation valve mounted on the saddle and adapted to close said port and a patient adapter mounted on the saddle and having a flow passage in axial alignment with the venturilike flow passage.

2. A breathing device as in claim 1 wherein said valve member is provided with a stem and wherein said saddle is provided with a stem support member and cooperative means carried by the stem support member and by the stem permitting limited axial movement of the valve member relative to the stem support member.

3. In a manual positive pressure breathing device adapted to be connected to a source of gas under pressure, a venturi assembly having a venturilike passageway with one end open to the atmosphere, a jet nozzle adapted to be connected to said source of gas under pressure, means mounting the jet nozzle in the venturi assembly so that the jet passing therefrom is directed into the venturilike passageway, a saddle having a flow passage in axial alignment with and in communication with the venturilike passageway in the venturi assembly, said saddle having an exhalation port open to the atmosphere in communication with the flow passage and a seat surrounding said port, a manually operated exhalation valve mounted on the saddle and adapted to close said port, a patient adapter mounted on the saddle and having a flow passage in axial alignment with the venturilike flow passage, said valve member being provided with a stem, said saddle being provided with a stem support member and cooperative means carried by the stem support member and by the stem permitting limited axial movement of the valve relative to the stem support member, said stem support member being provided with a bleed passage extending therethrough adapted to be connected to said source of positive pressure, said bleed passage being in axial alignment with the exhalation port, said valve member including a valve surface adapted to seat upon said stem member to close such passage in said stem support member.

4. A breathing device as in claim 3 wherein said seat on said saddle and said seat on said stem support member are precisely spaced so that they are closed substantially simultaneously by said valve member.

5. A breathing device as in claim 4 wherein said valve member is provided with upper and lower conical surfaces Adapted to engage said seats.

6. In a manual positive pressure breathing device adapted to be connected to the source of gas under pressure, a venturi assembly having a venturilike passageway with one end open to the atmosphere, a jet nozzle, means mounting said jet nozzle so that the jet stream passing therefrom is directed into the venturilike passageway, a saddle having a flow passage in axial alignment with and in communication with said venturilike passageway in the venturi assembly, a patient adapter mounted on the saddle and having a flow passage in communication with the flow passage in the saddle, said saddle having an exhalation port therein open to the atmosphere in communication with the flow passage, said saddle being formed with a seat surrounding said port, a manually operated exhalation valve mounted in the saddle, a support member mounted in the saddle, said support member having a flow passage therein, means adapted to connect a source of positive pressure to the support member so that gases bleed from the support member, said valve member having a stem and means forming a cooperative relationship between the stem of the valve member and said support member whereby axial movement of said valve member is permitted relative to said support member, said valve member carrying a surface adapted to close said passage through said support member when said valve member is in a closed position, said valve member also having a surface adapted to close said port when said valve member is in a closed position.

7. A breathing device as in claim 6 wherein said surfaces are inclined with respect to the axis of the exhalation port.

8. A breathing device as in claim 6 wherein said cooperative means includes a recess in the support member and inwardly extending lips carried by the valve member and extending into the recess.