Device for manually ventilating a patient

• US 4,502,481 A
• Filed: 02/15/1983
• Issued: 03/05/1985
• Est. Priority Date: 02/15/1983
• Status: Expired due to Fees

• Current Assignee: Pamela H. Christian
• Original Assignee: Pamela H. Christian
• Inventors: Christian, Pamela H.
• Primary Examiner(s): Recla, Henry J.
• Application Number:
  US06/466,375
• Time in Patent Office: 749 Days
• Field of Search: 128/203.14, 128/203.28, 128/203.29, 128/204.18, 128/204.21, 128/204.24, 128/204.25, 128/205.12, 128/205.13, 128/205.14 , 128/205.15, 128/205.16, 128/205.17, 128/205.18, 128/205.24, 128/205.25, 128/207.14, 128/207.15
• US Class Current: 128/205.24
• 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 16/0833 T- or Y-type connectors, e.g. Y-piece
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit

Abstract

A ventilation device for manually ventilating a patient having an inspiratory tube connected between a source of breathing gas and a patient adaptor and an expiratory tube connected between the patient adaptor and a two-way exhaust valve. The exhaust valve includes two flow paths each having a normally closed overpressure valve therein and an outlet communicating to atmosphere. The valves are adjusted respectively for positive peak inhalation pressure and positive end expiration pressure. The outlet adjacent the valve biased for positive end expiratory pressure is occludible to initiate the insufflation phase and regulate the peak inspiratory pressure.

Claims

1. A device for the manual ventillation of a patient, comprising:

a. an inspiratory tube having a bore completely therethrough,

b. said inspiratory tube having means at one end thereof adapted to be connected to a breathing gas source,

c. adaptor means defining first and second flowpaths,

d. said inspiratory tube having its opposite end attached to said adaptor means and communicating with said flow path,

e. a patient connector attached to said adaptor means for receiving breathing gas from one of said paths for inhalation by the patient, and for returning patient exhalation of said breathing gas to said second flowpath,

f. an expiratory tube, having a bore completely therethrough connected at one of its ends to said adaptor means and communicating with said second flowpath to receive said breathing gas when exhaled by the patient,

g. a valve housing having two sections each having an inlet connected to the other end of said expiratory tube and an outlet, and comprising an adjustable, normally closed over-pressure valve in each section thereof,

h. one of said valves being adjusted to set the peak inspiratory pressure,

i. said other valve being adjusted to a weaker bias relative to said one valve to set the end expiratory pressure,

j. each of said valves permitting a controlled flow of breathing gas from said outlets of said each section to the atmosphere,

k. each of said over-pressure valves being separately adjustable so that the respective biasing forces of said two valves may be established to attain the respective desired positive peak inhalation and positive end exhalation pressures in the patient circuit,

l. said valve said other valve therein comprising an outlet port structured for and subject to being finger occluded, whereby the operator manually, and with a single finger, establishes the duration and frequency of the inhalation and exhalation breathing cycle.

2. A device as in claim 1, wherein said tubes are highly flexible.

3. A device as in claim 1, wherein said valve housing sections are perpendicular to each other.

4. A device as in claim 1, wherein said first valve housing section is in line with said expiratory tube.

5. A device as in claim 1, wherein said second valve housing section is normal to said expiratory tube.

6. A device as in claim 1, wherein

a. said inspiratory tube being of light weight, flexible material,

b. said expiratory tube being of light weight, flexible material,

c. said patient adaptor, said valve housing and said patient connector being extremely light in weight, whereby

d. a small compact light weight package, said entire device being folded into said package which may be placed in a small handbag for ease of transport.

7. A device as in claim 6, wherein said light weight package is a compact roll of the size to substantially fit in an adult'"'"'s outstretched hand.

11. A device as in claim 1 or 8, wherein a manometer is attached through a long flexible tube to said adaptor means.

8. A device for manual ventillation of a patient in a patient circuit, comprising:

a. breathing gas source,

b. a main inspiratory tube having a bore completely therethrough,

c. one end of said inspiratory tube being attached to said breathing gas source,

d. adapter means having an inlet port and two outlet ports,

e. the other end of said inspiratory tube attached to said inlet port,

f. a main expiratory tube having a bore completely therethrough,

g. one end of said expiratory tube being attached to one outlet port of said adaptor means,

h. a patient connector means attached to the other outlet port of said adaptor means,

i. a two arm valve housing defining first and second normally oriented flowpaths and having an adjustable, normally closed over-pressure valve in each flowpath, said first arm being attached to and in alignment with the other end of said expiratory tube,

j. said over-pressure valve in said first arm being of a weaker bias than the other overpressure valve,

k. a first outlet in said second arm of said valve housing communicating said second flowpath to atmosphere,

l. a second outlet in said first arm communicating said first flow path to atmosphere,

m. said first outlet comprising an outlet port having a size configuration intended for and susceptible of being occluded by a typical size human finger,

n. said finger action resulting in increasing and reducing pressure of the breathing gas in the patient circuit,

o. each of said over-pressure valves being separately adjustable so that the respective biasing forces of said two valves may be established to attain the respective desired positive peak inhalation and positive end exhalation pressures in the patient circuit, and wherein said adjustable valve in said first arm always maintains a weaker bias than the other valve.

9. A device as in claim 8, wherein said adaptor means and said patient connector means are located within a confined patient area, and wherein said two arm valve housing is located remote from said confined patient area.

10. A device as in claim 8, wherein said outlet port comprises a pliable material end member.