WO2007073211A1 - Ameliorations concernant les appareils de reanimation - Google Patents

Ameliorations concernant les appareils de reanimation Download PDF

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Publication number
WO2007073211A1
WO2007073211A1 PCT/NZ2006/000334 NZ2006000334W WO2007073211A1 WO 2007073211 A1 WO2007073211 A1 WO 2007073211A1 NZ 2006000334 W NZ2006000334 W NZ 2006000334W WO 2007073211 A1 WO2007073211 A1 WO 2007073211A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
mouthpiece
sections
resuscitator
air
Prior art date
Application number
PCT/NZ2006/000334
Other languages
English (en)
Inventor
Gary Noel Stevenson
Original Assignee
Gary Noel Stevenson
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
Application filed by Gary Noel Stevenson filed Critical Gary Noel Stevenson
Publication of WO2007073211A1 publication Critical patent/WO2007073211A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0072—Tidal volume piston pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0075—Bellows-type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks

Definitions

  • the present invention relates to resuscitation apparatus for assisting in resuscitating people or animals that have stopped breathing.
  • a resuscitator such as shown in Figure 1, is a pump like device that includes an air chamber with a reciprocating pump mechanism, and a latex, thermoplastic, rubber, polycarbonate or other material outlet mouthpiece (such as a mask) designed to be placed over the mouth and/ or nose of the person or animal being resuscitated.
  • a pump like device that includes an air chamber with a reciprocating pump mechanism, and a latex, thermoplastic, rubber, polycarbonate or other material outlet mouthpiece (such as a mask) designed to be placed over the mouth and/ or nose of the person or animal being resuscitated.
  • patient can refer to a human or an animal and a mouthpiece is any article that can cover a mouth, snout and/ or nose or any other respiratory opening of a human or animal.
  • the present invention may be said to consist in a resuscitator comprising: an air chamber with a longitudinal axis and an inlet, an outlet in the air chamber through which air can flow from the chamber, and wherein the air chamber is formed from at least three nestable sections that are adapted to slide telescopically relative to each other along the longitudinal axis to pump air from the air chamber through the outlet.
  • the nestable sections are adapted to collapse into a nested configuration for storage.
  • the outlet is adapted for connection to a mouthpiece.
  • the resuscitator further comprises a mouthpiece connected to the outlet.
  • the outlet comprises a mouthpiece.
  • the mouthpiece comprises a diverging wall extending to an opening with a first diameter, the diverging wall comprising an internal diameter that varies along the axis of the mouthpiece, and wherein at least a portion of the mouthpiece can be retracted or folded back to expose a portion of the mouthpiece that has a diameter smaller than the first diameter.
  • the resuscitator further comprises a releasable locking mechanism for retaining one or more of the nestable sections in a fixed relationship with one or more adjacent nestable sections to substantially prevent relative sliding between those respective sections in the longitudinal direction to reduce the effective volume of the chamber.
  • the present invention may be said to consist in a resuscitator comprising: a variable volume air chamber with a longitudinal axis and an inlet, an outlet in the variable volume air chamber through which air can flow from the chamber, and a pump mechanism for forcing air from the chamber through the outlet, wherein the wall of the variable volume air chamber comprises at least three sections that are adapted to slide relative to each other along the longitudinal axis to vary the volume of the air chamber, and the resuscitator further comprising a releasable locking mechanism for retaining one or more of the sections in a fixed relationship with one or more adjacent sections to substantially prevent relative sliding between those respective sections in the longitudinal direction to reduce the effective pump volume of the chamber.
  • the at least three sections are formed as concentrically nestable cylinders, the diameters of the sections being such that each pair of adjacent cylinders can slide relatively to allow one of the adjacent cylinders to slide and nest concentrically within the other adjacent cylinder.
  • the pump mechanism comprises the at least three sections wherein by manoeuvring the sections between an extended and nested state, air is pumped from the chamber through the outlet.
  • the releasable locking mechanism comprises a separate releasable locking mechanism for each pair of adjacent sections, each mechanism comprising one or more protrusions on a first section of the pair engaging in a channel formed in a second section of the pair, the protrusion adapted to slide within the channel and allow the sections of the pair to slide longitudinally relative to each other, the channel further comprising a recess extending there from for engagement with the protrusion and prevention of the relative longitudinal sliding movement.
  • the nestable sections are adapted to collapse into a nested configuration for storage.
  • the outlet is adapted for connection to a mouthpiece.
  • the resuscitator further comprises a mouthpiece connected to the outlet.
  • the outlet comprises a mouthpiece.
  • the mouthpiece comprises a diverging wall extending to an opening with a first diameter, the diverging wall comprising an internal diameter that varies along the axis of the mouthpiece, and wherein at least a portion of the mouthpiece can be retracted or folded back to expose a portion of the mouthpiece that has a diameter smaller than the first diameter.
  • the at least three sections are adapted to collapse into a nested configuration for storage.
  • the present invention may be said to consist in a mouthpiece for a resuscitator comprising a diverging wall extending to an opening with a first diameter, the diverging wall comprising an internal diameter that varies along the axis of the mouthpiece, and wherein at least a portion of the mouthpiece can be retracted or folded back to expose a portion of the mouthpiece that has a diameter smaller than the first diameter.
  • the present invention may be said to consist in a resuscitator comprising a variable volume air chamber with a longitudinal axis, a mouthpiece or mask or mask through which air can flow from the chamber, and a pump mechanism for forcing air from the chamber through the mouthpiece or mask or mask, wherein the wall of the chamber is formed from two or more sections that are adapted to slide relative to each other in the direction of the longitudinal axis to vary the volume of the air chamber, the resuscitator further comprising a releasable locking mechanism for retaining one or more of the sections in a fixed relationship with one or more adjacent sections to substantially prevent relative sliding between those sections in the longitudinal direction to reduce the effective pump volume of the chamber.
  • the present invention may be said to consist in a resuscitator comprising a variable volume air chamber with a longitudinal axis, a mouthpiece through which air can flow from the chamber, and a pump mechanism for forcing air from the chamber through the mouthpiece, wherein the wall of the chamber is formed from two or more collapsible sections that are adapted to concertina, the sections being biased to retain the wall in an extended state, and wherein under pressure along the longitudinal axis the wall forms the pump mechanism by collapsing and forcing air from the chamber into the mouthpiece.
  • the present invention may be said to consist in a suction apparatus for removing material from the mouth and/ or throat of a patient comprising a tube with a first end for placement in the mouth and/ or nose, an opening adapted for connection to the air chamber of a resuscitator via a valve, and a discharge end for discharging material, wherein when the suction apparatus is connected to a resuscitation apparatus the valve allows airflow between the tube and chamber of the resuscitator to allow a vacuum to form in the tube, and the valve substantially prevents material passing between the chamber and tube.
  • Figure 1 shows an existing resuscitation device
  • Figure 2a shows a cross-sectional side view and plan view of a first embodiment of a resuscitator according to the present invention, the resuscitator including a locking mechanism,
  • Figure 2b shows a cross-sectional side view of the first embodiment in a collapsed configuration
  • Figure 2c shows a cross-sectional exploded sided view of the resuscitator shown in
  • Figure 2d shows a cross-sectional plan view of the first embodiment of the resuscitator in a collapsed configuration
  • Figures 2e and 2f show a side view of the first embodiment of the resuscitator in collapsed and extended configurations respectively
  • Figure 3 shows an internal wall of one section of the resuscitator air chamber with locking mechanism
  • Figure 4 shows the mouthpiece in an extended and a retracted state
  • Figure 5 shows the resuscitator in its collapsed configuration and retained in a holder
  • Figure 6 shows the resuscitator with an extraction tube attached
  • Figure 7 shows a second embodiment of the resuscitator
  • Figures 8a and 8b show a cross-sectional side view of a third embodiment of the resuscitator in a partially and fully extended configurations respectively with the inlet and outlet shown,
  • Figure 9 shows the second embodiment of the resuscitator in a compact configuration
  • Figures 10a and 10b show top (B-B) and bottom (C-C) cross-sectional views of the second embodiment of the resuscitator in its compact configuration
  • Figures 11a and lib show a cross-sectional view and side/plan elevation view respectively of the outlet valve in further detail
  • Figures 12a and 12b show a cross-sectional view of the outlet valve in patient exhale and pumped inhale positions respectively
  • Figures 13a and 13b show a full and cut-away perspective view of the assembled resuscitator according to the third embodiment
  • Figure 14 shows another embodiment of the mouthpiece.
  • Figures 2a to 2f show various views of a first embodiment of a resuscitator 1 according to the invention.
  • Figures 2a, 2c and 2f show the resuscitator in an extended state or configuration.
  • Figures 2b, 2d and 2e show the resuscitator in a collapsed state or configuration. It will be appreciated that the dimensions shown in the Figures are indicative and not limiting.
  • the resuscitator comprises a variable volume air chamber 11 (e.g. see Figure 2a) connected to a mouthpiece 12.
  • the mouthpiece could, for example, be an oxygen type mask or similar.
  • the mouthpiece can also cover the nose and/ or mouth.
  • a first valve 13a (see Figure 2c) is placed between the mouthpiece 12 and the air chamber 11 to allow air to pass from the chamber 11 to the mouthpiece 12.
  • a second valve 13b (see Figure 2£) allows exhaled air to vent.
  • An air intake valve 14 is placed on the top of the chamber 11 to provide an air inlet.
  • the non- return inlet valve 14 has a latex seal or similar flexible material with a raised intake head.
  • the first and second valves 13a, 13b form part of an outlet that enables air to pass from the inside of the air chamber 11 to the outside of the air chamber (which will typically be to the inside of an attached mouthpiece 12 ) and in particular to a patient.
  • the outlet might also comprise any other portions integrated with or extending from the chamber 11 (such as a conduit) to allow for passage of air.
  • the outlet or parts thereof may be adapted to be coupled permanently or detachably to a mouthpiece, for example mouthpiece 12.
  • the outlet could be considered to comprise the mouthpiece 12 in addition to the other components comprising the air outlet.
  • the inlet allows for air to move into the air chamber 11, the inlet comprising the air intake valve 14 and any other components which effect movement of air into the chamber.
  • the chamber 11 comprises a cylindrical 16a wall fixed to the top of the chamber and one or more nestable cylindrical walls 16b-16f.
  • the wall of the ait chamber 11 is formed from a top section 16a and two or more concentrically nestable sections 16b-16f which can slide axially along the longitudinal axis 20 in the directions shown by arrows 15 in a telescopic manner.
  • the sections 16a-16f are each formed as a cylinder, although other configurations are possible.
  • the sections may have a cross-sectional shape that is square or any other polygon.
  • each of the nestable sections 16b-16f is adapted to slide and nest within the lower adjacent section so that the entire chamber 11 can be collapsed such that the nestable sections 16b-16f are all nested within the top section 16a.
  • the sections 16a-16f are sealed in a suitable manner to form the air chamber 11.
  • the chamber 11 is formed from a top section 16a and five cylindrical sections 16b-16f concentrically nestable sections that are slidably engaged in a telescopic manner, although it will be appreciated by those skilled in the art that two or more concentrically nestable sections could be used in conjunction with the top section 16a.
  • Figure 2d shows a cross-sectional plan view of the apparatus 1, where each of the nested walls 16a-16f of the chamber 11 are shown in dotted lines.
  • a top portion 28 (not shown for clarity) moulded as part of chamber 16a, (or alternatively attached as an engaging lip and recess) covers the sections.
  • the sections 16a-16f of the chamber 11 are manufactured from suitable thermoplastic, other plastics or other materials.
  • Each pair of corresponding sections 16a,16b; 16b,16c;16c,16d; 16d,16e and 16e,16f may all have a releasable locking mechanism for preventing relative axial sliding 15 between the two sections of the pair.
  • the locking mechanism will be described with reference to Figure 3, which shows an example of the locking mechanism in relation to section pair 16a,16b. It will be appreciated that a similar arrangement may be used for the other sections, as required.
  • Figure 3 is a side elevation of one half of the internal face of the top section 16a.
  • the locking mechanism includes at least one protrusions (such as a nib e.g. 17b) protruding radially from the lower adjacent section 16b.
  • each nestable section 16b-16f includes one or more protruding nibs (e.g.l7b-17f) disposed diametrically opposite each other as depicted in Figure 2c.
  • Each nib e.g. 17b slidably engages in a channel or other guide e.g. 21a formed in or disposed on the corresponding upper adjacent section of the pair as seen in Figure 2a.
  • Each channel e.g. 21 may also comprise at least one recess e.g. 22 formed in the section 16a-16e protruding laterally from the channel 21.
  • the recess 22 is dimensioned to receive the nib 17b when it is lined up and the section 16a is rotated either clockwise or anticlockwise.
  • the recess may also include a resistance fit or other mechanism or shaping to retain the nib within the recess.
  • a similar locking mechanism is preferably also disposed on the other sectors of the sections 16a, 16b comprising a channel 21a (shown as light grey lines) in 16a and the nibs 17b protruding from section 16b.
  • Other sections 16b, 16c, 16d and 16e include similar channel arrangements 21b, 21c, 21d, and 21e to receive respective nibs 17c, 17d, 17e, and 17f from a corresponding lower adjacent sections 16c, 16d, 16e and 16f.
  • Each section 16a-16e may be independently locked relative to its corresponding adjacent lower section, as required.
  • the nestable sections provide a pumping mechanism.
  • the sections 16a-16f When the sections 16a-16f are in their fully extended configuration, such as shown in Figure 2a, the full volume of the chamber is filled with air through the intake valve 14.
  • the top section 16a By pressing down on the top section 16a, it and the remaining nestable sections 16b,16c; 16c,16d; 16d,16e and 16e,16f slide relative to each other and telescopically collapse into a nested state (such as shown in Figure 2b), such that they are positioned concentrically within the top section 16a as further shown in Figure 2d. In doing so, the air contained within the chamber 11 is forced through the opening 18 and out through the opening of the mouthpiece 12.
  • top section 16a Pulling the top section 16a up again via the assistance of an optional adjustable strap 23, restores the volume of the chamber and it is refilled with air through the valve 14.
  • the optional adjustable top strap 23 extending from the top surface of the apparatus enables the top section 16a to be manipulated in this manner. This process can be repeated to pump air into the lungs of a patient.
  • a formed conduit 36 is provided, either moulded to or attached in the some manner to the top section 16a.
  • This enables pure oxygen to be injected into the chamber 11 via a pressure regulated oxygen cylinder or similar so that oxygen can be pumped into the patient by a similar reciprocating pump action as described above.
  • the conduit 36 might be formed as part of or attached to the section 16f or opening 18 to enable oxygen to enter the chamber 11.
  • the releasable lockable sections enable the effective pumping volume of the chamber 11 to be varied. By selectively locking one or more of the sections to their corresponding lower adjacent sections, this prevents the expansion and nesting of those sections taking place. For example, if section 16a is twisted such that the nibs 17 lock into the recesses e.g. 22 in the inner surface of top section 16a, then section 16b can no longer extend from section 16a. Therefore, when the pumping action takes place, only section 16c, 16d, 16e and 16f will collapse into sections 16b, 16c, 16d and 16e respectively, which all in turn will collapse into sections 16a and 16b. This means a volume of ait equivalent to section 16a will not be pumped into the patient's lungs. Different combinations of sections 16b-16f could be locked and unlocked as required to alter the effective pumping volume of the chamber.
  • the mouthpiece 12 is formed from a suitable resilient and flexible material such as latex or rubber.
  • the mouthpiece comprises a neck 18 which is connected to the base of the chamber 11 and has an aperture and valve 13a there-through for allowing air to pass between the chamber 11 and the mouthpiece 12.
  • a wall extends from the narrow neck 18 and diverges into a wider diameter opening 24, which can be placed over the mouth and/or nose of the patient being resuscitated.
  • the wall of the mouthpiece may, for example, be diverging such that the diameter increases linearly as the wall diverges from the neck 18 to the main aperture 24, or else the diameter may alter in a non-linear manner, such as parabolically, or such as that shown in Figure 2a and Figure 6.
  • the aperture 24 is of a suitable diameter for placing over the nose and/ or mouth of an adult patient.
  • the diverging wall provides least one point at which the diameter is smaEer to that of die main aperture and of a suitable diameter to cover the nose and mouth of a child patient.
  • the resilient and flexible nature of the mouthpiece 12 enables the main aperture 24 to be folded back and over at least part of the mouthpiece 12 (as shown in Figure 4) to expose a smaller inner diameter opening 25 of the mouthpiece 12. In such a state, the mouthpiece 12 is then suitable for placing over the nose and/ or mouth of a child.
  • the main opening 24 of the mouthpiece 12 may be adapted to be retracted to a range of different positions, providing a range of opening diameters suitable for different sized patients.
  • the mouthpiece can be made from latex, thermoplastic, rubber, polycarbonate or other suitable material.
  • the mouthpiece will enable folding back of opening 24, which could be of a suitable diameter size for a child, along opening 25 to expose the opening 25 which could be of a suitable diameter size for placing over the nose and/ or mouth of an infant or baby.
  • opening 24 is sized for an adult
  • the second opening 25 is for a child
  • the third opening 26 is for an infant.
  • the mouthpiece could be folded back at openings 25 and 26, to expose the opening 26 of a suitable perimeter size for the placing over the nose/mouth of an infant or baby.
  • the mask could be adapted in a similar manner for use on animals of different sizes.
  • FIG. 5 shows the apparatus in its compact state in which it has been packed away in a holder 30.
  • each cylindrical section 16b-16f is manipulated such that its respective nibs 17b-17f sit within the channels e.g. 21 formed in the corresponding upper adjacent section.
  • Each section is then collapsed and nested in the upper adjacent section such that the entire chamber is placed in a compact configuration in which each section is nested concentrically within its corresponding upper adjacent section and top section 16a.
  • the overall height of the chamber 11 is approximately that of the top section 16a.
  • the mouthpiece 12 is folded back at least partially over the top section 16a of the chamber 11 to reduce the height profile of the apparatus or in another embodiment, the mouthpiece is retracted into the orifice of section 16a.
  • the holder 30 could be an adaptation of the top section 16a.
  • the top section 16a In the closed position, the top section 16a could encompass sections 16a to 16e in a sealed compact configuration. In this compact state the device can then be placed in a low profile container 30 or other type of holder or as described above it could be in a sealed compact configuration as sections 16b to 16f retracted inside section 16a.
  • the holder may be sealed with a hinge/lid arrangement in a manner to ensure the apparatus is stored hygienically or alternatively in a vacuum sealed bag as a compact configuration.
  • the overall height of the chamber when in the compact configuration is approximately that of the top section 16a, or in the more general case, the height of the largest section.
  • nestable sections it is possible to achieve an air chamber volume that is sufficient to enable resuscitation, but still provide a largest nestable section that is small enough to enable a useful compact configuration. Where only two nestable sections are used it would be necessary to have larger sections to achieve the same chamber volume. In having the larger sections, the compact configuration where one section is nested in the other would not be as low profile as is the case where three or more nestable sections are used.
  • the mouthpiece 12 is folded back, such as shown in Figure 4, to expose a smaller diameter aperture 25 (or alternatively opening 26 when available) which can then be placed over the mouth and/ or nose of the smaller patient.
  • the effective pumping volume of the chamber 11 can be altered or reduced as required in consideration of the smaller lung capacity of the patient being attended to. For example, where an older child or animal is being resuscitated, die top section 16a can be rotated and locked to section 16b to prevent relative sliding.
  • sections 16c, 16d, 16e and 16f upon pushing the pump chamber only sections 16c, 16d, 16e and 16f will slide and nest in top section 16a, 16b thereby- reducing a volume of air pumped into the lungs of the patient equivalent to section 16b.
  • section 16c may be locked to section 16b, thereby meaning only sections 16d, 16e and 16f nest into top section 16a. This reduces further the volume of air pumped into the child's or animal's lungs, by the equivalent of the volume of sections 16b and 16c.
  • the mouthpiece or mask 12 might also be furdier retracted to expose an even smaller diameter opening commensurate with the patient's mouth/nose size.
  • the apparatus could be the lower walls that are locked in place, as required to reduce the volume of the pump chamber.
  • the apparatus could be clearly labelled to indicate which section(s) should be rotated and locked or unlocked when treating a patient of a particular size or age. Note that for safety purposes, die initial setting is that required for the smallest patients lung capacity to be resuscitated by the apparatus.
  • FIG. 6 shows an optional solids removal accessory 31, which may be utilised in conjunction with a preferred embodiment of die invention or alternatively an existing resuscitator apparatus.
  • the solids removal accessory 31 includes a tracheal suction tube 32 formed from silicone rubber or other suitable material that is flexible.
  • the tracheal suction tube has one end 33 for placement in the mouth or throat of the patient.
  • a rigid plastic right- angle discharge opening 34, and a telescopic portion 35 that engages in the silicone tube 32 are provided. This enables the tube discharger to be extended as required.
  • an opening 38 is provided with a valve 37 connecting the opening to the air chamber 11.
  • a membrane 41 in the valve allows air to pass through but prevents solids from entering the pump chamber.
  • a suction is formed in the tube 32 via the valve 37 thus forming a vacuum sucking solids from the mouth and/ or throat of the patient.
  • the solids are then ejected out the discharge opening through a non-return valve 42. It -will be appteciated the removal accessory could also remove liquids and other materials.
  • each channel e.g. 21 formed in the sections 16a-16e has more than one nib recess formed along the length of the channel. This provides further lockable positions to further increase the range of distinct effective pumping volumes the apparatus could provide.
  • the nib protrudes radially from the upper adjacent section of a section pair, and the channel in which the nib slides is formed in the lower adjacent section of the pair.
  • a spring mechanism could be included to bias the sections into the fully extended position, whereby once a downward force is removed from the top section of the chamber, the sections return to the extended position.
  • the air chamber 70 has a wall that is formed from a number of collapsible sections that concertina under pressure, in a manner similar to bellows.
  • the sections are biased by a spring embedded in the wall, so that the wall is in an extended state. Under pressure by a hand or similar placed on the top surface of the bellows the wall collapses and the sections concertina into a collapsed state.
  • a third embodiment of the invention is shown with respect to Figures 8a to 14b.
  • This third embodiment is similar to the first embodiment, but with a differently configured inlet and outlet 80, 81.
  • the third embodiment can comprise three or more nestable sections, and as shown in Figures 8a and 8b preferably comprises five nestable sections 82a-82d.
  • the nestable sections 82a-82d can be the same or similar to those described in relation to the first embodiment with respect to Figures 2a to 6.
  • Figure 8a shows the resuscitator of the third embodiment in a partially extended configuration and Figure 8b shows the resuscitator in a fully extended configuration.
  • Figure 9 shows a cross-sectional view of the resuscitator in a fully compact configuration.
  • Figures 10a and 10b show respectively cross-sectional views B-B and C-C as indicated in Figure 9.
  • the outlet 81 which comprises a valve will be described in further detail with reference to Figures lla-12b.
  • the outlet 81 comprises a conduit 110 that extends to a tapered air intake 111 that is connected to the bottom nestable section 82e of the resuscitator.
  • the tapered air intake 111 comprises a straight cylindrical wall 130b extending from the tapered section 130a and an annular lip 130c.
  • the tapered air intake 111 comprises a number of air outlet apertures Ilia to lllf.
  • the outlet 81 also comprises a tapered valve member 113 with a tapered top surface 114 that is adapted to abut and seat against an inside tapered surface 115 of the air intake 111.
  • the valve member 113 also comprises a boss 127a and associated seating portion 127b disposed annularly around the boss 127a.
  • the valve member 113 also comprises apertures, 116a 116f that allow for flow of air from the air chamber 11 through the conduit 110 to a connected mouthpiece 12 (not shown in Figures 11a to 12b) or to the ambient air.
  • the valve means 113 further comprises a diaphragm, flapper valve or similar 117 attached to the top surface and covering the apertures 116a-116f.
  • the diaphragm 117 prevents flow of air in the direction of arrow B through the apertures 116a-l 16f, but allows flow of air in the direction of arrow A.
  • Figures 12a and 12b show the outlet in cross-sectional form as it is connected to the lower section 82e of the air chamber 11.
  • the lowest section 82e is partially shown with an opening 121 that allows air to pass from the chamber 11 through the bottom or base wall 122 of the section 82e into the remainder of the outlet 81.
  • the aperture 121 forms part of the outlet 81.
  • the lowest section 82e of the air chamber 11 comprises an annular wall 123 that extends around the perimeter of the aperture 121 extending from the bottom wall 122.
  • An annular lip 124 extends laterally from the wall 123 to define a snap-lock recess 125.
  • the annular Hp 130c of the tapered air intake 111 is adapted to snap-lock into the recess 125 to couple the conduit 110 and air intake 111 over the aperture 121 in the base 122 of the bottom section 82e.
  • the valve member 113 is positioned inside the tapered means 111 between the base 122 thus retaining it in place although movable between an open and closed state.
  • the outlet 81 can be in an open (inhale) state (see Figure 12b), which allows for air to flow from the air chamber 11 through the conduit 110 of the outlet and through to ambient air, preferably through a mouthpiece 12 if it is connected to the outlet 81.
  • the outlet can alternatively be in a closed (exhale) state (see Figure 12a) in which air cannot pass from the chamber 11 through the outlet 81, but allows for exhaled air from a patient to vent through to ambient air.
  • the valve member 113 is seated to close off the aperture 121 in the base 122 of the bottom section 82e.
  • the exhaled air When a patient exhales, the exhaled air will hit the diaphragm 117 thus preventing the exhaled air from traveling through the openings 116a, 116b into the interior of the air chamber 111 via the aperture 121.
  • the differential pressure from the exhaled air will coerce the valve means 113 to seat against the opening 121 of the lower section 82e of the air chamber 11.
  • the boss 127a extends into the interior portion formed by the annular wall 123 such that the annular seating portion 127b abuts the top of the annular wall 123. This closes off the aperture 121.
  • the tapered face 114 seats against the inner surface 115 of the air intake 111, thus closing off the apertures Ilia to lllf. This prevents air escaping from the air chamber 11 into ambient air. Instead, the air is directed through the openings 116a-116f past the diaphragm 117 and through the conduit 110 as shown by arrows D and ultimately into the patient's lungs.
  • the inlet 80 comprises a valve formed of a number of apertures (e.g. 90a, 90b) machined into the top surface of the top section 82a.
  • a diaphragm or flapper valve 91 is placed over the apertures 90a, 90b, which allows for ingress of air into the chamber 11 as shown by arrow A but prevents flow of air from the chamber 11 back to ambient air as shown by arrow B.
  • Figures 13a, 13b show an isometric view of the assembled resuscitator according to the third embodiment.
  • the inlet 80 comprising 90a, 90b and 91 could be formed as part of 82e in order to allow air to be drawn into the chamber 11.

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  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente invention concerne un appareil de réanimation (1) dans lequel la chambre d’air (11) est formée à partir d’au moins trois sections emboîtables (16a-16f) qui sont conçues pour coulisser de façon télescopique les unes par rapport aux autres le long de l’axe longitudinal pour pomper l’air à partir de la chambre d’air (11) à travers une sortie (81).
PCT/NZ2006/000334 2005-12-19 2006-12-18 Ameliorations concernant les appareils de reanimation WO2007073211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ544257 2005-12-19
NZ544257A NZ544257A (en) 2005-12-19 2005-12-19 Variable volume resuscitator

Publications (1)

Publication Number Publication Date
WO2007073211A1 true WO2007073211A1 (fr) 2007-06-28

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PCT/NZ2006/000334 WO2007073211A1 (fr) 2005-12-19 2006-12-18 Ameliorations concernant les appareils de reanimation

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NZ (1) NZ544257A (fr)
WO (1) WO2007073211A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011106051A1 (fr) * 2010-02-23 2011-09-01 Uam Global Llc Élément d'aération pour appareil respiratoire
WO2015167709A1 (fr) * 2014-01-09 2015-11-05 Life Vac Llc Dispositif d'intervention de suffocation et son procédé d'utilisation
WO2017096286A1 (fr) * 2015-12-03 2017-06-08 Capnia Inc. Ballon de réanimation
CN116712661A (zh) * 2023-08-10 2023-09-08 昆明医科大学第二附属医院 一种防止尿道水肿的医用导尿套件

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB990939A (en) * 1961-10-24 1965-05-05 Juan Andres Arecheta Mota Portable breathing apparatus
GB1190877A (en) * 1968-05-08 1970-05-06 Life Aid Products Ltd Resuscitator
FR2607395A1 (fr) * 1986-12-02 1988-06-03 Coudert Anne Marie Dispositif pour la reanimation de noyes par inspiration de liquide et insufflation d'air simultanees
US4870962A (en) * 1987-09-14 1989-10-03 Lee Sitnik Disposable self-inflating manual resuscitator bag
US4934360A (en) * 1989-01-05 1990-06-19 Heilbron Delphine R Disposable manual resuscitator
US5009226A (en) * 1990-05-14 1991-04-23 Holt William T Mechanical resuscitator
GB2242633A (en) * 1990-04-05 1991-10-09 Norma Doris Mcculloch Resuscitator
US5628305A (en) * 1995-09-27 1997-05-13 Richard J. Melker Universal ventilation device
US5657751A (en) * 1993-07-23 1997-08-19 Karr, Jr.; Michael A. Cardiopulmonary resuscitation unit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB990939A (en) * 1961-10-24 1965-05-05 Juan Andres Arecheta Mota Portable breathing apparatus
GB1190877A (en) * 1968-05-08 1970-05-06 Life Aid Products Ltd Resuscitator
FR2607395A1 (fr) * 1986-12-02 1988-06-03 Coudert Anne Marie Dispositif pour la reanimation de noyes par inspiration de liquide et insufflation d'air simultanees
US4870962A (en) * 1987-09-14 1989-10-03 Lee Sitnik Disposable self-inflating manual resuscitator bag
US4934360A (en) * 1989-01-05 1990-06-19 Heilbron Delphine R Disposable manual resuscitator
GB2242633A (en) * 1990-04-05 1991-10-09 Norma Doris Mcculloch Resuscitator
US5009226A (en) * 1990-05-14 1991-04-23 Holt William T Mechanical resuscitator
US5657751A (en) * 1993-07-23 1997-08-19 Karr, Jr.; Michael A. Cardiopulmonary resuscitation unit
US5628305A (en) * 1995-09-27 1997-05-13 Richard J. Melker Universal ventilation device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011106051A1 (fr) * 2010-02-23 2011-09-01 Uam Global Llc Élément d'aération pour appareil respiratoire
US8857432B2 (en) 2010-02-23 2014-10-14 Gradian Health Systems Llc Ventilating element, system, and methods
WO2015167709A1 (fr) * 2014-01-09 2015-11-05 Life Vac Llc Dispositif d'intervention de suffocation et son procédé d'utilisation
US10052115B2 (en) 2014-01-09 2018-08-21 Arthur LIH Choking intervention device and method of use thereof
WO2017096286A1 (fr) * 2015-12-03 2017-06-08 Capnia Inc. Ballon de réanimation
CN116712661A (zh) * 2023-08-10 2023-09-08 昆明医科大学第二附属医院 一种防止尿道水肿的医用导尿套件
CN116712661B (zh) * 2023-08-10 2023-12-29 昆明医科大学第二附属医院 一种防止尿道水肿的医用导尿套件

Also Published As

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