CA1220111A - Resuscitator bag - Google Patents

Resuscitator bag

Info

Publication number
CA1220111A
CA1220111A CA000453515A CA453515A CA1220111A CA 1220111 A CA1220111 A CA 1220111A CA 000453515 A CA000453515 A CA 000453515A CA 453515 A CA453515 A CA 453515A CA 1220111 A CA1220111 A CA 1220111A
Authority
CA
Canada
Prior art keywords
outer housing
tubular member
member
patient
end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000453515A
Other languages
French (fr)
Inventor
Wallace F. Cook, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inspiron Corp
Original Assignee
Inspiron Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US49157283A priority Critical
Application filed by Inspiron Corp filed Critical Inspiron Corp
Application granted granted Critical
Publication of CA1220111A publication Critical patent/CA1220111A/en
Priority to US491,572 priority
Application status is Expired legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057Pumps therefor
    • A61M16/0078Breathing bags
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057Pumps therefor
    • A61M16/0084Pumps therefor self-reinflatable by elasticity, e.g. resuscitation squeeze bags
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/12Preparation of respiratory gases or vapours by mixing different gases

Abstract

12.
ABSTRACT OF THE DISCLOSURE
A resuscitation apparatus for use during medical procedure 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.

Description

~212~
1.

RE~SUSCITATOR Is/ G

Thi~ invention relates to the field of medical devices/ and more partic:ularly, to brea~hing equipment 5 such as resuscitator6.

Manual resuscita~ors using ~elf-inflating bags are well recognized in the prior art. Such devices are often used during "cardio-pulmonalty resuscitation"~
often times referred to as "CPRn. During ~uoh procedure, it is necessary to supply the patient with large quantities of air or oxygen. In addition to forcing a volume of air to the patient, ~uch devices mus~ also take into account the fact that the patient may inhale or exhale under his or her own ability. As a result, resuscitation bag~ are u~ually comprised o~ three basic components; to wit: a mask, a specifio directional control valve arrangement, and a squeezable bag.
The mask is used to form a seal about ~he patient's nose and mouth. As ~uch, i~ is typically ~ade of a soft, pliable ~aterial and is sufficiently flexible so as to contour to a wide variety of facial features.
Typically, ~he body of the mask must be ~ufficiently rigid to allow unifo.rm for~e ~o be applied so as to make the seal.
The directional control valve located adjacent the mask must allow air ~o be forced under pressure to the patient and should also permit the patient to exhale.
In addition, the valve should allow the patient to brea~he spontaneously by drawing air through the bag (not forced under pressure) and to exhale.
The bag i~ ~he means for ~upplying air under .pressure to the patien~. Such bags are well known in the ar~ and generally include a one-way check valve at the end opposite the regulator valve 80 ~S to permit ~ 7 air to flow in one direction only into the bag.
Generally, such bags should be compliant and permit 40 cycles per minute operation while delivering a minimum of 500 cc. of air per cycle at 100 cm. of water pressure.
While each of ~he elements discussed above are recognized by the prior art, heretofore the prior art has created resuscitation bags and masks which had various problems includinq complexi~y in design and/or operation, expense, and the like. These as well as other shortcomings have plagued ~his area of endeavor for a substantial period of time. Examples of prior art bags and masks are shown in U.S. Patent Nos.
3,363,833; 4,037,595; 4,121,580, and 3,55S,1220 The present invention addresses these problems and provides a disposable bag and valve construction which are straight forward in their design, but yet effective in their operation~

In the resuscitation apparatus o~ the present invention, a squeeze bag is provided which includes a first directional control valve housing joined to a first end of the bag. The first valve housing has a squee~e bag port, a patient port and an exhalation port. A first valve means is disposed in the first valve housing for controlling the flow of fluid to and from the patient. The firs-t valve means comprises a one-way valve portion Eor directing fluid from the squeeze bag through the patient port during inha-lation or forced respiration and through the exhalationport during exhalation, and a diaphragm portion for closing off the exhalation por-t during inhalation or Eorced respiration. A second check valve means is disposed on -the squeeze bag for directing Eluid into the s~ueeze bag.
The first valve means thus enables three opera-tions to take place: (1) "forced respiration"; (2) "free exhalation"; and (3) "spontaneous breathing" through the bag. Regardless of whether there is forced respieation or spontaneous breathing by the patient, the apparatus of the present invention permits exhalation to take place.
Forced respiration is started with the pressuri-zation of the bag. The first valve means seals the exhala-tion port. With the exhalation port closed off, air is forced to the patient through the patient port. The first valve means will remain in this position as long as the bag pressure is maintained greater than the atmospheric pressure. When bag pressure is removed, the first valve means will shift due to the patient lung pressure thereby opening the exhalation port for fluid flow from the patient. The patient is now free to exhale through the exhalation port.
Free exhalation is achieved by directing exhaled air out of the exhalation apparatus through the exhalation port. This is also achieved by the ~2~
.
~.

c~nfiguration of the firs~ valve means~ Th~s ~onfiguration is maintained as lon9 as there i~
exhalation pressure~
Spon~aneous breathing is permit~ed as the irst valve means enables the patient to easily draw air from the bag through the patient port. Because ~he firs~
valve means in its static position seals off the exhalation port during free inhala~ion, the patient inhales the fluid which is in the bag. In thi~ manner, control over the fluid directed to the patient can be achieved. This valve configuration is maintained as long a ~he patient is inhaling. When a patient ~tops inhaliny and starts to exhale, the first valve means shifts to permit free exhalation.
The novel features which are believed to be characteristic of this invention, both as to its organization and method of o~eration~will be bet~er understood from the following description considered in connection with the accompanying drawings in which a presently preferred embodiment of the invention is illustrated by way of example. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only, and are not intended as definition of the limits of the invention.

s.
In ~he drawinqs:
FI~;U~E 1 is a perspecl~ive view showing ~he variou~
elements of the resuscita~ion apparatu~ of the present invent ion.
FIGURE 2 is a cut-away view of FIGVRE 1 taken along lines 2~2 and showing the operation of the f ir~t valve means of the present invention.
FIGURE 3 is a cut-away view showing another operation of ~he i~irst valve means of the present inventiorl.

6.

Referring iEirst to Figure 1, there is shown, as a presently pre~erred embodiment of the present invention, the bag and mask ass~mbly 10. As one can ~ee, assembly 10 i~ comprised of an elongated, generally flexible squeeze bag 12 su~h as is well known in the art.
Typically, bay 12 is of a transparenl~ or translucen~c plastic and can be readily deformed with hand pressure.
Bag 12 includes a first end 14 defining a gas c~utlet opening and a second end 16 defining a gas inlet opening.
A f irst valve housing 18 is joined to the bag 12 ad jacent the first end 14 thereoiE. ~ousing 18 includes a fir~t upper bulbous section and a depending lower sectis:~n jo;ned to bag 12. A second valve housing 20 is joined to the second end 16 of the bag 12. Conduit 22 is joined to the first valve housing 18 and enables a face mask 24 'co be joined lto the bag 12 in flow (:ommunication therewith. Face mask 24 is conventional and will not be described in detail hereinO
Joined to the second valve housing 20 is a flexible hose or conduit 26 which may include tubing 23. Tubing 28 can be joined to an external gas source 50 as to regulate the type of gas being supplied to bag 12. In this manner, specific gases such as an enriched oxygen mixture and the like can be ultimately supplied to the patient as hereinbelow described in greater detail.
P~eferr~ng now to FIGURES 2 and 3, one c:an see that valve housing 18 includes a f irst valve means comprising a flexible duck-billed diaphragm 30 held in position by retaining snap ring 34. Duck-billed diaphragm ~0 is of one-piece construction comprised of a centrally located duck-billed portion 30a, an integral, generally flat concentric sealing ring portion 30b, and a flexible convolute shuttle portion 32. Duck-billed portion 3ûa is disposed in valve housing 18 sl2~h that it preferably exterlds up into a f irst patient port 36 . ~3~tending gener~lly perpendicular with respect to the axis of the 3~

patient port 36 is an exit port 38. Housing 18 also defi-nes an open port 39 which surrounds the first end 14 of bag 12. Ports 36 and 39 are in flow communication with bag 12, while port 38 is in selective flow communication with the patient.
Re~erring now to valve housing 20, one can see that it encloses a second diaphragm valve 40 and a diaphragm body 42. ~iaphragm 40 and body 42 define a one-way valve, such valves being well known in the art. In the present inventionl fluid is permitted to flow into bag 12 through openings 45 only in the direction of arrows 100.
Diaphragm 40 is preferably mounted on protrusion 44 centraLly located on body 42 as it is also conventional in the art. ~ cap 46 circumferentially surrounds the body 42 and is disposed on the bag 12 ad~acent the second end 16 thereof. Cap 46 has an oxygen inlet port 48 which permits fluid to readily flow into the bag 12, and a flow control orifice 52 as hereinbelow described in greater detail.
In the operation oE assembly 10, as s~ueeze bag 12 is depressed, internal pressure causes the diaphragm 40 to press against diaphra~m body 42 and thus closes off ope-nings 100 and the second end 16 of the bag 12. Fluid within the bag 12 is therefore forced through the duck-billed valve portion 30a, port 36 and into maslc 24. This is illustrated in Figure 2. To prevent fluid from flowing out of exit port 38, flexible diaphragm 30 abuts up against tubular extension or end 36a of port 36. More specifi-cally/ the generally flat concentric sealing ring 30b abuts against end 36a. In the pre~Eerred embodiment end 36a forms a bevelsd seat to insure proper sealing with ring 30b. This seals off exit port 38 with respect to the flow of fluid from the bag 12. The operation of squeezing the bag 12 to force a volume of air or other fluid to a patient is generally referred to as Eorced respiration If desired, conduit 28 can 1~2~

be joined to a source oE fluid such as oxygen or the like so as to create an oxygen rich mixture which can then be directed to the patient.
During the free exhalation function, air or other fluid would be exhaled by the patient and flows through the conduit 22 towards the bag 12. However, such pressure causes the duck-billed valve portion 30a to close and the sealing ring portion 30b of the flexible diaphragm 30 to move away from the end 36a of port 36. This is shown in Figure 3. In this manner, the exit port 38 is now in flow communication with port 36 and the exhalate flows through the exit port 38 to the outside. This valve configuration is maintained as long as there is an exhalation pressure.
Should the patient exhibit spontaneous breathing, the Eirst valve means of -the present invention permits this to readily take place. When the patient draws air in without the bag 12 being squeezed, the vacuum created will insure the valve diaphragm 30 to be sealed against the end 36a of the port 36 and the duck-billed por-tion 30a to open such as is described above with respect toforce respiration. The vacuum also causes the valve diaphragm 40 to open and air to flow through the bag 12 to the patient. When the patient stops inhaling and starts exhaling, the diaphragm 30 shifts to allow free exhalation as described above.
When the s~ueeze bag 12 is squeezed and released, a vacuum is created thereby closing duck-billed portion 30a~ and simultaneously opening check valve diaphragm ~0.
This enables fluid to be drawn into squeeze bag 12 through openings ~5. ~uring bag refill, valve diaphragm 30 is design to permit simultaneous patient exhalation.
Yet another uni~ue feature of this invention is the use and placement of a disk-shaped flow controller 50 defining flow control orifice 52. Controller 50 is disposed in removable cap ~6. This enables one to discon-nect the flow controller 50 from bag 12 should 9~2~
9.

unrestricted flow into bag 12 be desired. Controller 50 is designed to overcome a problem with prior art bag when oxygen is being used. In the prior art bag oxygen typically cannot be supplied fast enough. Thus dur ing bag refill, a greater- than-desired amount of air is drawn into the bag diluting the oxygen. In the present invention, oxygen is fed into bag 12 through tubing 28.
During bag refill, the flow of air is restricted by means of orifice 50 thus enabling more oxygen to flow into bag 12. In addition, during other operations of the bag 12, oxygen from tubing 28 flows back through orifice 52 and fills hose 26. During bag refill, hose 26 thus acts as a reservoir er.abling yet additional oxygen to flow into bag 12.
Yet another feature of the present invention is that should end 16 of the bag 12 become ocluded, the patient can still draw fluid through port 36. This is achieved as during inhalation with end 16 ocluded, a vacuum is formed in bag 12 thus drawing diaphragm 30 and ring 30b into bag 12. When ring 30b disengages from end 36b of port 36, fluid can then be drawn into the apparatus through port 38, and directed to the patient.
While the presently preferred e~bodiment has been described above, it is apparent to one skilled in the ar~ that other embodiments are also within the scope of the present invention. For example, diaphragm 30 can be held in place by sealing means other than ring 34 i.e. by bonding and the like. Housing 18 can also be made in 2-parts for retaining diaphragm 30 and for easy disassembly and cleani.ng. Duck-billed portion 30a can also be replaced with a flapper-type check valve joined to portion 30b. In addition, other elements can be easily joined to appartus 10 such as PEEP equipment, because of the easy access to port 38a This invention, therefore, is not to be limited to the particular embodiment herein disclosed.

Claims (5)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A valve for a patient breathing apparatus comprising:
a rigid tubular member, a rigid cylindrical outer housing, one end of said tubular member extending concentrically within said outer housing, an end of said outer housing extending radially inwardly to join said tubular member, the second end of said tubular member extending outwardly beyond said outer housing to form a patient port for communication to a breathing mask, means for communicating a source of breathable gas to the interior of said outer housing, a unitary duckbill valve and diaphragm member disposed within said outer housing and formed of a resi-lient material, the periphery of said unitary member being securely joined to said outer housing, said unitary member having;
(a) an outer annular portion extending across the space between said outer housing and said tubular member, (b) a centrally situated duckbill valve extending upwardly into said tubular member from said one end thereof, (c) an intermediate annular portion joining said outer portion to said duckbill valve, said inter-mediate annular portion being substantially coplanar with said one end of said tubular member so as to seat and seal thereagainst when said valve is in its static state, the periphery of said resilient unitary member being joined to said outer housing in near coplanar rela-tionship with said one end of said tubular member, and wherein said outer annular portion of said resilient uni-tary member has an arcuate cross-section, a valveless exhaust port opening through said outer housing communicating to an annular space between said outer housing and said tubular member on the side of said unitary valve and diaphragm member facing said radially inwardly extending end of said outer housing.
2. A resuscitator apparatus comprising:
a hollow squeeze bag having first and second ope-nings therein, a patient valve assembly attached to said squeeze bag at said first opening, said assembly consisting of:
a rigid cylindrical outer housing, one end of said outer housing being joined to said squeeze bag at the periphery of said first opening, a rigid tubular member having a diameter smaller than said outer housing and extending coaxially therewith, the second end of said outer housing tapering inwardly with decreasing diameter so as to define a dome portion which is joined to said tubular member at the middle thereof, said outer housing thereby supporting said tubular member, one portion of said tubular member extending beyond said outer housing and constituting a patient port for said apparatus, the second portion of said tubular member extending within said outer housing but terminating short of said one end thereof, there being an annular chamber between and defined by said second end of said outer housing and said second portion of said tubular member, a unitary duckbill valve and diaphragm member disposed within said outer housing and formed of a resi-lient material, the periphery of said unitary member being securely joined to said outer housing, said unitary member having (a) an outer annular portion extending across the space between said outer housing and said tubular member, (b) a centrally situated duckbill valve extending upwardly into the end of said second portion of said tubular member, and (c) an intermediate annular portion joining said outer annular portion to said duckbill valve, said intermediate annular portion being substantially coplanar with said end of said second portion of said tubular member so as to seat thereagainst when said resuscitator is in its quiescent state, and a rigid cylindrical member attached to and extending laterally outwardly from said outer housing near said second end thereof, said cylindrical member com-municating through an opening in said outer housing to said annular chamber and to the outer annual portion of said unitary duckbill valve and diaphragm member, said cylindri-cal member being an exhaust port for said resuscitation apparatus, and a breathable gas one way inlet valve affixed to said squeeze bag at said second opening, said inlet valve only permitting the flow of breathable gas into said squeeze bag via said second opening, but preventing the outflow of gas therethrough, said patient port facilitating the attachment thereto of a patient breathing mask, so that patient inha-lation will cause breathable gas from within said squeeze bag to flow through said duckbill valve to said patient port and mask, and the resultant reduced pressure within said squeeze bag will result in the flow of breathable gas from a source into said squeeze bag via said one way inlet valve, upon patient exhalation the pressure of exhaled gas within said tubular member will close said duckbill valve and will urge said unitary duckbill valve and diaphragm member toward said outer housing lower end, thereby unseating said intermediate annular portion of said resilient unitary member from the lower end of said tubular member, thereby opening an exhalation path for exhaled gas from said patient port via the annular space between the lower end of said tubular member and said unitary member into said annular chamber and thence to said exhalation exhaust port, and upon squeezing of said squeeze bag, breathable gas within said bag will be prevented from exiting via said second opening by said one way inlet valve, and hence said breathable gas from within said squeezed bag will be forced under pressure via said duckbill valve to said patient port and mask, said exhaust port also facilitating the supply of breathable gas to said patient port without flow through said squeeze bag, in the event of occlusion of the breathable gas supply to said second opening, as the patient inhales the resultant decreased pressure within said squeeze bag urge said unitary valve and diaphragm member away from said end of said second portion of said tubular member so as to permit breathable gas, such as air at ambient pressure, to enter said exhaust port and flow via the resultant space between said diaphragm member and said tubular member to said patient port, thereby per-mitting breathable gas entrant from said exhaust port to reach the patient.
3. A resuscitation apparatus according to claim 2 further including a flexible breathing mask joined to said patient port.
4. A resuscitation apparatus according to claim 2 further including means for directing a fluid into said squeeze bag joined to said one way inlet valve.
5. A resuscitation apparatus according to claim 2 wherein the periphery of said resilient unitary member is joined to said outer housing in near coplanar relationship with said end of said second portion of said tubular member and wherein said outer annular portion of said resilient unitary member has an arcuate cross section.
CA000453515A 1983-05-04 1984-05-03 Resuscitator bag Expired CA1220111A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US49157283A true 1983-05-04 1983-05-04
US491,572 1990-03-15

Publications (1)

Publication Number Publication Date
CA1220111A true CA1220111A (en) 1987-04-07

Family

ID=23952789

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000453515A Expired CA1220111A (en) 1983-05-04 1984-05-03 Resuscitator bag

Country Status (4)

Country Link
JP (1) JPH0126310B2 (en)
CA (1) CA1220111A (en)
DE (1) DE3416350A1 (en)
GB (1) GB2139099B (en)

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US7004162B1 (en) 1992-11-09 2006-02-28 Canadian Monaghan, Ltd. Exhalation valve
US7013896B2 (en) 2001-05-08 2006-03-21 Trudell Medical International Mask with inhalation valve

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US7051596B1 (en) 2003-10-03 2006-05-30 Ventlab Corporation Manual resuscitators with integral manometer
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004162B1 (en) 1992-11-09 2006-02-28 Canadian Monaghan, Ltd. Exhalation valve
US7013896B2 (en) 2001-05-08 2006-03-21 Trudell Medical International Mask with inhalation valve

Also Published As

Publication number Publication date
GB2139099B (en) 1986-11-26
GB2139099A (en) 1984-11-07
JPH0126310B2 (en) 1989-05-23
JPS6041975A (en) 1985-03-05
CA1220111A1 (en)
DE3416350A1 (en) 1984-11-08
GB8411439D0 (en) 1984-06-13

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