Resuscitator bag

• US 4,774,941 A
• Filed: 12/11/1986
• Issued: 10/04/1988
• Est. Priority Date: 05/04/1983
• Status: Expired due to Term

• Current Assignee: SIMS Portex Inc.
• Original Assignee: Intertech Resources Inc.
• Inventors: Cook, Wallace F.
• Primary Examiner(s): Coven, Edward M.
• Assistant Examiner(s): REICHLE, KARIN M
• Application Number:
  US06/941,573
• Time in Patent Office: 663 Days
• Field of Search: 128/203.11, 128/203.28, 128/205.11, 128/205.13, 128/205.17, 128/205.24, 128/911, 137/102, 137/512.4, 137/DIG. 9
• US Class Current: 128/205.13
• CPC Class Codes: A61M 16/0078 Breathing bags
• CPC Class Codes: A61M 16/0084 self-reinflatable by elasticity, e.g. resuscitation squeeze bags
• CPC Class Codes: Y10S 137/908 Respirator control
• CPC Class Codes: Y10T 137/2544 Supply and exhaust type

Abstract

A resuscitation apparatus for use during medical procedures is disclosed. The device comprises a squeeze bag having a gas inlet and a gas outlet, and a specifically configured valve joined to the bag over the gas outlet. The valve housing includes a squeeze bag port in flow communication with the gas outlet opening, a patient port and an exhalation port. The valve disposed in the housing includes a portion for directing fluid from the squeeze bag through the patient port during inhalation or forced respiration and through the exhalation port during exhalation. Another portion of the valve closes off the exhalation port during inhalation or forced respiration such that fluid from the squeeze bag is directed to the patient.

Claims

1. A resuscitator comprising:

(a) a flexible squeeze bag having a hollow interior and first and second openings at opposite ends thereof;

(b) a directional control valve assembly fastened to said bag at said first opening;

(c) a one-way gas inlet valve fastened to said bag at said second opening, said inlet valve permitting gas flow only into said hollow interior through said second opening;

(d) said directional control valve assembly comprising a valve housing having a domed first end and a second end, said second end being secured to said bag around said first opening and having an open port formed therein which is coupled in flow communication with said hollow interior;

(e) said assembly further comprising a tubular patient port joined to said first end of said valve housing and adapted to be coupled in gas flow communication to a patient, said patient port extending into said valve housing and including a tubular extension formed interiorly of said valve housing, and a unitary flexible duck-billed diaphragm valve;

(f) said tubular extension being located substantially concentrically within said valve housing and terminating in a circular end, an annular exit passage being formed between said valve housing and said extension and an interior flow passage being formed within said extension, said interior flow passage being in flow communication with said first opening of said bag;

(g) an unobstructed exit port formed in said valve housing in flow communication with said annular exit passage;

(h) said duck-billed diaphragm valve including an outer peripheral portion, an inner duck-bill portion, a flexible annular portion connected to and surrounding said duck-bill portion, and a convolute shuttle portion connecting said peripheral and annular portions, said peripheral portion being secured to said valve housing, said annular portion being adjacent to and engageable with said circular end of said tubular extension, said duck-bill portion extending into said tubular extension, said shuttle portion extending into said annular exit passage, said shuttle portion, said annular portion and said duck-bill portion folding around said end and on opposite sides of said tubular extension; and

(i) said unobstructed port and said annular exit passage forming a valveless exit flow path during exhalation and forming a valveless intake flow path during spontaneous inhalation when said second opening is occluded.

2. A resuscitator according to claim 1, wherein said unobstructed port is formed by a rigid cylindrical member attached to and extending substantially laterally outwardly from said valve housing.

3. A resuscitator according to claim 1, wherein said annular portion and said peripheral portion of said duck-bill diaphragm valve are substantially coplanar, and said shuttle portion extends arcuately into said annular exit passage and against said tubular extension.

4. A resuscitator comprising:

(a) means for supplying gas having a hollow interior and first and second openings at opposite ends thereof;

(b) a directional control valve assembly fastened to said gas supplying means at said first opening;

(c) said directional control valve assembly comprising a valve housing having a domed first end and a second end, said second end being secured to said gas supplying means around said first opening and having an open port formed therein which is coupled in flow communication with said hollow interior;

(d) said assembly further comprising a tubular patient port joined to said first end of said valve housing and adapted to be coupled in gas flow communication to a patient, said patient port extending into said valve housing and including a tubular extension formed interiorly of said valve housing, and a unitary flexible duck-billed diaphragm valve;

(e) said tubular extension being located substantially concentrically within said valve housing and terminating in a circular end, an annular exit passage being formed between said valve housing and said extension and an interior flow passage being formed within said extension, said interior flow passage being in flow communication with said first opening;

(f) an unobstructed exit port formed in said valve housing in flow communication with said annular exit passage;

(g) said duck-billed diaphragm valve including an outer peripheral portion, and inner duck-bill portion, a flexible annular portion connected to and surrounding said duck-bill portion, and a convolute shuttle portion connecting said peripheral and annular portions, said peripheral portion being secured to said valve housing, said annular portion being adjacent to and engageable with said circular end of said tubular extension, said duck-bill portion extending into said tubular extension, said shuttle portion extending into said annular exit passage, said shuttle portion, said annular portion and said duck-bill portion folding around said end and on opposite sides of said tubular extension; and

(h) said unobstructed port and said annular exit passage forming a valveless exit flow path during exhalation and forming a valveless intake flow path during spontaneous inhalation when said second opening is occluded.

5. A resuscitator according to claim 4, wherein said unobstructed port is formed by a rigid cylindrical member attached to and extending substantially laterally outwardly from said valve housing.

6. A resuscitator according to claim 4, wherein said annular portion and said peripheral portion of said duck-bill diaphragm valve are substantially coplanar, and said shuttle portion extends arcuately into said annular exit passage.