Oxygen therapy mask with positive expiratory pressure function

Abstract

The utility model relates to the technical field of medical auxiliary instruments. An oxygen therapy mask with a positive expiratory pressure function comprises a mask body, the center of the mask body is connected with an oxygen connector, and the oxygen connector is sequentially provided with an oxygen inlet and a one-way air inlet valve from bottom to top; the mask body is further connected with a one-way check safety valve used for exhausting and an expiration indication pressure adjusting valve used for exhausting, and the exhaust pressure of the expiration indication pressure adjusting valve can be adjusted. The one-way check safety valve and the expiration indication pressure regulating valve are located above the oxygen connector. An air outlet of the expiration indication pressure regulating valve is in butt joint with an indication channel, an indication ball is movably connected in the indication channel, and the indication ball moves in the indication channel through air flow. The pressure inside the mask is adjusted through the expiration indication pressure adjusting valve so as to meet the pressure requirements of different patients.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical auxiliary instrument technical field, concretely relates to oxygen mask. BACKGROUND

[0002] For the patient needing long time oxygen therapy, wearing oxygen mask is the common treatment method. However, due to illness and weakness, lung function damage, lung tissue due to the loss of internal gas and lead to alveolar in the collapsed state, affect the respiratory function of the patient. Based on this problem, the end of expiration positive pressure is a solution. The end of expiration positive pressure (PEEP) is that in the control breathing or assisted breathing, at the end of expiration in the respiratory tract maintains a certain positive pressure.

[0003] The existing market's end of expiration positive pressure mask has the following defects:

[0004] 1) Single expiration valve, which is not conducive to the exhaust of different conditions of gas in the mask;

[0005] 2) Cannot realize the intuitive acquisition of the patient's breathing condition. UTILITY MODEL CONTENTS

[0006] In view of the problems existing in the prior art, the utility model provides an oxygen mask with positive pressure function, which solves at least one of the above technical problems.

[0007] The technical scheme of the utility model is: an oxygen mask with positive pressure function, comprising a mask body, characterized in that a central oxygen joint is connected to the mask body, and a oxygen inlet and a one-way air inlet valve are sequentially arranged on the oxygen joint from bottom to top;

[0008] A one-way check safety valve for exhaust and an expiration indication pressure regulating valve for exhaust and adjustable exhaust pressure are further connected to the mask body;

[0009] The one-way check safety valve and the expiration indication pressure regulating valve are located above the oxygen joint;

[0010] The gas outlet of the expiration indication pressure regulating valve is connected to one end of an indication channel in the axial direction, the other end of the indication channel is communicated with the atmosphere, and an indication ball is movably connected in the indication channel, and the indication ball moves in the indication channel through gas flow.

[0011] The utility model discloses a one -way air inlet is provided with the oxygen joint, and the inside of the mask is in the oxygen atmosphere. The exhalation indicating pressure regulating valve is used for adjusting the pressure inside the mask to adapt to the pressure demand of different patients. While ensuring certain pressure, the exhaled gas is discharged to prevent carbon dioxide from gathering. When inhaling, the exhaust hole is closed to prevent the atmosphere from entering and increase the oxygen concentration. The structure can be used to observe the breathing state of the patient. When the pressure inside the mask is greater than a certain value, the exhaust is opened to protect the safety of the patient.

[0012] Further preferably, the top and bottom of the mask cover are connected with the ears, and the ears are provided with through holes for the elastic band.

[0013] The elastic band can be placed below the ears to prevent ear damage caused by long time use.

[0014] Further preferably, the exhalation indicating pressure regulating valve comprises a first valve body, and the first valve body is sequentially provided with a first inlet end, a first valve piece movable part and a first outlet end along the axial direction.

[0015] The inner wall of the first outlet end is threadedly connected with the indicating channel;

[0016] The outer wall of the first outlet end is connected with a limiting sleeve for preventing the indicating channel from falling off, and the limiting sleeve is provided with a limiting extension part extending radially inward for abutting against the indicating channel.

[0017] The first valve piece movable part is axially slidably connected with a first valve piece, and a first spring for abutting against the first inlet end to block the first inlet end is arranged between the first valve piece and the indicating channel.

[0018] The first spring can be adjusted by the spiral of the indicating channel.

[0019] Further preferably, the indicating channel comprises a sliding guide cylinder body with both ends open in the axial direction, and the both ends of the sliding guide cylinder body are connected with a ventilation anti-falling part for preventing the indicating ball from falling out.

[0020] Further preferably, one end of the indicating channel is provided with a spring limiting groove for embedding the first spring.

[0021] The first inlet end is provided with a sealing ring limiting groove for embedding a first sealing ring on one side adjacent to the first valve piece movable part in the axial direction.

[0022] Further preferably, the one-way air inlet valve comprises an air inlet valve body, a breathable sieve plate and a diaphragm for blocking the mesh of the breathable sieve plate when moving downward, and the breathable sieve plate is fixed in the air inlet valve body.

[0023] The upper part of the breathable screen is detachably connected with a limiting frame, the limiting frame comprises a guide column for guiding the axial sliding of the diaphragm and a limiting part for preventing the diaphragm from falling out, and the end of the guide column is connected with the limiting part;

[0024] The diaphragm is located between the limiting part and the breathable screen.

[0025] Further preferably, the bottom of the oxygen joint is connected with an oxygen storage bag.

[0026] The oxygen imported through the oxygen inlet is temporarily stored in the oxygen storage bag. When the patient exhales, the one-way inlet valve is opened, and the oxygen in the oxygen storage bag enters the inside of the mask.

[0027] Further preferably, the one-way check valve comprises a second valve body, the second valve body comprises a second inlet end, a second valve piece movable part and a second outlet end in sequence along the axial direction;

[0028] The inner wall of the second outlet end is threadedly connected with a rotating inner sleeve;

[0029] The outer wall of the second outlet end is connected with a limiting outer sleeve for limiting the circumferential direction of the rotating inner sleeve, and the limiting outer sleeve and the rotating inner sleeve are provided with matching limiting structures;

[0030] The second valve piece movable part is axially slidably connected with a second valve piece, and a second spring for elastically abutting the second valve piece against the second inlet end is arranged between the second valve piece and the rotating inner sleeve.

[0031] Further preferably, the outer wall of the second outlet end is provided with a strip-shaped groove arranged in the circumferential direction;

[0032] The limiting outer sleeve is provided with a strip-shaped protrusion which is axially slidably arranged in the strip-shaped groove, and the limiting outer sleeve is connected with the second outlet end in an interference fit.

[0033] Further preferably, an axial through hole is formed in the rotating inner sleeve, and a spring limiting groove for embedding the first spring is formed in one end of the rotating inner sleeve, the spring limiting groove and the through hole have the same center, and the spring limiting groove is located on the outside of the through hole;

[0034] The second inlet end is axially adjacent to one side of the second valve piece movable part, and a sealing ring limiting groove for embedding a second sealing ring is formed in the second inlet end.

[0035] Further preferably, a U-shaped piece is connected to one side of the rotating inner sleeve away from the second inlet end, and the two ends of the U-shaped piece are respectively connected to the diametrically opposite sides of the rotating inner sleeve;

[0036] The limiting sleeve is provided with two extending parts extending radially inward, and the U-shaped piece is limitedly arranged between the two extending parts.

[0037] Compared with the prior art, the utility model has the advantages that: while ensuring normal oxygen supply, the face mask is ensured to have a certain end-expiratory pressure, the soft sealing ring improves comfort and sealing effect, and the possibility of pressure sore is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a structural schematic view of a specific embodiment 1 of the utility model;

[0039] Figure 2 It is a structural schematic view of a specific embodiment 1 of the utility model from another perspective;

[0040] Figure 3 It is a structural schematic view of a specific embodiment 1 of the utility model from another perspective;

[0041] Figure 4 It is an exploded view of a one-way check safety valve of a specific embodiment 1 of the utility model;

[0042] Figure 5 It is an exploded view of a one-way check safety valve of a specific embodiment 1 of the utility model from another perspective;

[0043] Figure 6 It is an exploded view of an exhalation indicating pressure regulating valve of a specific embodiment 1 of the utility model;

[0044] Figure 7 It is an exploded view of an exhalation indicating pressure regulating valve of a specific embodiment 1 of the utility model from another perspective.

[0045] In the figure, 1 is a face mask body, 11 is an ear support, 2 is an oxygen joint, 21 is an oxygen inlet, 3 is an exhalation indicating pressure regulating valve, 31 is a first valve body, 32 is a first valve piece, 33 is a first spring, 34 is a first cylinder body, 35 is a first cylinder cover, 36 is a limiting sleeve, 37 is a first sealing ring, 38 is an indicating ball, 4 is a one-way check safety valve, 41 is a second valve body, 42 is a second valve piece, 43 is a second spring, 44 is a rotating inner sleeve, 45 is a limiting sleeve, 46 is a second sealing ring; 5 is an air inlet valve, 51 is a gas permeable sieve plate, 52 is a diaphragm, and 53 is a limiting frame. DETAILED DESCRIPTION

[0046] Referring to Figures 1 to 7Specific embodiment 1, an oxygen mask with positive pressure function, comprising a mask body 1, the central connection of the mask body 1 has an oxygen joint 2, the oxygen joint 2 is sequentially provided with an oxygen inlet 21 and a one-way air inlet valve 5 from bottom to top. The oxygen inlet is connected with the mask body. The mask body is also connected with a one-way check valve 4 for exhaust and an exhalation indicating pressure regulating valve 3 for exhaust and adjustable exhaust pressure; the one-way check valve 4 and the exhalation indicating pressure regulating valve 3 are located above the oxygen joint 2; the gas outlet of the exhalation indicating pressure regulating valve 3 is connected with one end of an indicating channel in the axial direction, the other end of the indicating channel is communicated with the atmosphere, and a indicating ball 38 is movably connected in the indicating channel, and the indicating ball 38 moves in the indicating channel through gas flow. The utility model discloses a one-way air inlet of oxygen joint 2, and the inside of the mask is in the atmosphere of oxygen. The exhalation indicating pressure regulating valve is used to adjust the internal pressure of the mask to adapt to the pressure demand of different patients; while ensuring a certain pressure, the exhaust of exhaled gas is carried out to prevent the accumulation of carbon dioxide; when inhaling, the exhaust hole is closed to prevent the atmosphere from entering and increase the oxygen concentration; and the state of patient's breathing can be observed through the structure. When the internal pressure of the mask is greater than a certain value, the exhaust is opened to protect the safety of the patient.

[0047] The indicating channel is made of transparent material.

[0048] The top and bottom of the mask body are connected with the ear supports 11, the through holes for passing through the elastic bands are formed in the ear supports 11, and the guide holes are formed in the ear supports 11 and communicated with the through holes in the radial direction. The elastic bands can be placed below the ears to prevent ear injury caused by long time wearing.

[0049] The expiratory indication pressure regulating valve 3 comprises a first valve body 31, which is sequentially provided with a first inlet end, a first valve plate movable part and a first outlet end along an axial direction; an inner wall of the first outlet end is threadedly connected with an indication channel; an outer wall of the first outlet end is connected with a limiting sleeve 36 for preventing the indication channel from being detached, the limiting sleeve 36 is provided with a limiting extension part extending radially inwardly for abutting against the indication channel; the first valve plate movable part is axially and slidingly connected with a first valve plate 32, and a first spring 33 for elastically abutting the first valve plate 32 against the first inlet end is arranged between the first valve plate 32 and the indication channel. The adjustment of the elastic force of the first spring 33 is facilitated by screwing the indication channel. The indication channel comprises a sliding guide cylinder body with both ends open in the axial direction, and the both ends of the sliding guide cylinder body are connected with a ventilation anti-detaching piece for preventing an indication ball 38 from being detached. The first inlet end is an end portion of the face mask body. One end of the indication channel in the axial direction is provided with a spring limiting groove for embedding the first spring 33; one side of the first inlet end adjacent to the first valve plate movable part in the axial direction is provided with a sealing ring limiting groove for embedding a first sealing ring 37. A first cylinder body 34 and a first cylinder cover 35 are detachably connected to form the sliding guide cylinder body. The ventilation anti-detaching piece is fixed to one end of the first cylinder body 34 in the axial direction. The ventilation anti-detaching piece is fixed to one end of the first cylinder cover 35 in the axial direction. The first valve plate is a metal plate.

[0050] The one-way air inlet valve 5 comprises an air inlet valve body, a ventilation screen plate 51 and a diaphragm 52 for blocking the mesh of the ventilation screen plate 51 when moving downwardly, and the ventilation screen plate 51 is fixed in the air inlet valve body; a limiting frame 53 is detachably connected above the ventilation screen plate 51, the limiting frame 53 comprises a guide column for guiding the diaphragm 52 to slide axially and a limiting part for preventing the diaphragm 52 from being detached, and the end of the guide column is connected with the limiting part; the diaphragm 52 is located between the limiting part and the ventilation screen plate 51. The inner diameter of the air inlet valve body in the region between the limiting part and the ventilation screen plate is greater than the outer diameter of the diaphragm.

[0051] The bottom of the oxygen connector 2 is connected with an oxygen storage bag. The oxygen introduced through the oxygen inlet 21 is temporarily stored in the oxygen storage bag. When the patient exhales, the one-way air inlet valve 5 is opened, and the oxygen in the oxygen storage bag enters the inside of the face mask.

[0052] The one-way check safety valve 4 comprises a second valve body 41, which is sequentially provided with a second inlet end, a second valve flap movable part and a second outlet end along an axial direction; an inner wall of the second outlet end is threadedly connected with a rotating inner sleeve 44; an outer wall of the second outlet end is connected with a limiting outer sleeve 45 for limiting the rotating inner sleeve in a circumferential direction, and the limiting outer sleeve 45 and the rotating inner sleeve 44 are provided with matching limiting structures; the second valve flap movable part is axially and slidingly connected with a second valve flap 42, and the second valve flap 42 and the rotating inner sleeve 44 are mounted with a second spring 43 for elastically abutting the second valve flap 42 against the second inlet end. The outer wall of the second outlet end is provided with strip-shaped grooves arranged in a circumferential direction; the limiting outer sleeve 45 is provided with strip-shaped protrusions axially sliding into the strip-shaped grooves, and the limiting outer sleeve 45 is connected with the second outlet end in an interference fit. The rotating inner sleeve is provided with a through hole with openings at both axial ends, and one end of the rotating inner sleeve is provided with a spring limiting groove embedded with the first spring 33, the spring limiting groove and the through hole have the same center, and the spring limiting groove is located on the outside of the through hole; the second inlet end is provided with a sealing ring limiting groove embedded with a second sealing ring 46 on one side adjacent to the second valve flap movable part in an axial direction. The side of the rotating inner sleeve away from the second inlet end is connected with a U-shaped piece, both ends of the U-shaped piece are connected with the opposite sides of the rotating inner sleeve in a radial direction; the limiting outer sleeve 45 is provided with two extension parts extending radially inward, and the U-shaped piece is limitedly arranged between the two extension parts. The second valve flap 42 is a metal sheet. The second inlet end is an end part of the butt joint face mask cover body.

[0053] The above is only the preferred embodiment of the present application, and it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, some improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An oxygen delivery mask with positive expiratory pressure function, comprising a mask body, characterized in that, The central connection of the mask cover body is provided with an oxygen joint, which is sequentially provided with an oxygen inlet and a one-way air inlet valve from bottom to top; The mask cover body is further connected with a one-way check safety valve for exhaust and an exhalation indication pressure regulating valve for exhaust and adjustable exhaust pressure; The one-way check safety valve and the exhalation indication pressure regulating valve are located above the oxygen joint; An air outlet of the exhalation indication pressure regulating valve is connected with one end of an indication channel in the axial direction, the other end of the indication channel is communicated with the atmosphere, and a movable indication ball is arranged in the indication channel and moves in the indication channel through gas flow.

2. The oxygen delivery mask with positive expiratory pressure function according to claim 1, wherein: Ears are connected to both sides of the top and bottom of the mask cover body, and a through hole for passing through an elastic band is formed in the ear, and a guide hole is formed in the ear and communicated with the through hole in a radial direction outward.

3. The oxygen delivery mask with positive expiratory pressure function of claim 1, wherein: The exhalation indication pressure regulating valve comprises a first valve body, and the first valve body sequentially comprises a first inlet end, a first valve plate movable part and a first outlet end along the axial direction; The inner wall of the first outlet end is threadedly connected with the indication channel; The outer wall of the first outlet end is connected with a limiting sleeve for preventing the indication channel from being separated, and the limiting sleeve is provided with a limiting extension part extending in a radial direction inward for abutting against the indication channel; The first valve plate movable part is axially slidably connected with a first valve plate, and a first spring is arranged between the first valve plate and the indication channel for elastically abutting the first valve plate against the first inlet end.

4. The oxygen delivery mask with positive expiratory pressure function of claim 1, wherein: The indication channel comprises a sliding guide cylinder body with both ends open in the axial direction, and the both ends of the sliding guide cylinder body are connected with a ventilation anti-falling part for preventing the indication ball from falling out.

5. The oxygen delivery mask with positive expiratory pressure function of claim 3, wherein: One end of the indication channel is provided with a spring limiting groove for embedding the first spring; The first inlet end is provided with a sealing ring limiting groove for embedding a first sealing ring on one side adjacent to the first valve plate movable part in the axial direction.

6. The oxygen delivery mask with positive expiratory pressure function of claim 1, wherein: The one-way air inlet valve comprises an air inlet valve body, a gas permeable screen plate and a diaphragm for blocking the mesh of the gas permeable screen plate when moving downward, and the air inlet valve body is fixedly provided with the gas permeable screen plate; A limiting frame is detachably connected above the gas permeable screen plate, the limiting frame comprises a guide column for guiding the axial sliding of the diaphragm and a limiting part for preventing the diaphragm from falling out, and the end of the guide column is connected with the limiting part; The diaphragm is located between the limiting part and the gas permeable screen plate.

7. The oxygen face mask with positive expiratory pressure function of claim 1, wherein: The bottom of the oxygen joint is connected with an oxygen storage bag.

8. The oxygen delivery mask with positive expiratory pressure function of claim 1, wherein: The one-way check safety valve comprises a second valve body, and the second valve body sequentially comprises a second inlet end, a second valve plate movable part and a second outlet end along the axial direction; The inner wall of the second outlet end is threadedly connected with a rotating inner sleeve; The outer wall of the second outlet end is connected with a limiting outer sleeve for circumferential limiting of the rotating inner sleeve, and the limiting outer sleeve and the rotating inner sleeve are provided with limiting structures matched with each other; The second valve plate movable part is axially slidably connected with a second valve plate, and a second spring is arranged between the second valve plate and the rotating inner sleeve for elastically abutting the second valve plate against the second inlet end.

9. The oxygen delivery mask with positive expiratory pressure function of claim 8, wherein: The outer wall of the second outlet end is provided with a strip-shaped groove arranged in a circumferential direction; The limiting sleeve is provided with a strip-shaped protrusion axially sliding into the strip-shaped groove, and the limiting sleeve is connected with the second outlet end in interference fit.

10. The oxygen delivery mask with positive expiratory pressure function of claim 8, wherein: A U-shaped piece is connected to the side of the rotating inner sleeve away from the second inlet end, and two ends of the U-shaped piece are respectively connected with the diametrically opposite sides of the rotating inner sleeve. The limiting sleeve is provided with two extending portions extending radially inward, and the U-shaped piece is limitedly arranged between the two extending portions.

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