The present disclosure relates to the technical field of medical instruments, in particular to a ventilation and noise reduction housing, a ventilation and noise reduction assembly, a ventilation and moisture retention apparatus, a breathing mask assembly, and a breathing support device.
At present, a mask respiratory system includes a ventilator, a respiratory tube and a breathing mask. The breathing mask includes a breathing chamber that can receive the nose or nose and mouth of a user, and then is secured to the user's face by a headband to form a sealed breathing chamber. Breathable gas generated by the ventilator can be delivered into the sealed breathing chamber through the respiratory tube, thereby performing respiratory treatment on the user. Further, in order to facilitate exhaust of the exhaled gas from the user, the breathing mask is typically provided with a gas vent so that the exhaled gas can be exhausted through the vent. Exhaled exhaust gas flushes the sidewalls of the vent to generate noise while passing through the vent.
In view of this, a layer of filter media is arranged next to the vent outside the vent, so that the exhaust gas discharged from the vent can only be discharged through the filter media. The filter media has a slowing effect on the exhaled exhaust gas, thereby effectively reducing such noise. However, at the same time, a new risk is introduced. Due to the filtering effect of the filter media, i.e. when it is used for a long time and is not cleaned as required, dust will accumulate at the vent, so that a flow value of the vent will be reduced. If the dust is not cleaned in time, the vent will be blocked, increasing the use risk, so that the treatment cannot achieve the expected effect.
Moreover, in use, such respiratory treatment generally takes a relatively long time, e.g., users generally need to wear the breathing mask throughout the day and night. When the air temperature is low and the air is dry, wearing such breathing mask for a long time will reduce the wearing comfort. To this end, the breathing machine is generally provided with a heating-humidification device such as a water tank or humidifier. When the gas passes through the water tank or humidifier, it will carry a portion of moisture to provide heated and humidified breathable gas to the user. However, typically, the ventilator is relatively big and difficult to be carried.
In view of this, solutions of the present disclosure are proposed.
It is an object of the present disclosure to provide a ventilation and noise reduction housing capable of improving hygiene while reducing noise to improve a therapeutic effect.
In view of this, the present disclosure provides a ventilation and noise reduction housing, including a respiratory passage segment, one end of the respiratory passage segment being a ventilation-noise reduction housing connection end, the other end of the respiratory passage segment being a respiratory tube communication end; a wall of the respiratory passage segment includes a ventilation-noise reduction unit mounting wall segment; the ventilation-noise reduction unit mounting wall segment is provided with exhaust vents and a supporting protrusion structure protruding from an outer surface of the ventilation-noise reduction unit mounting wall segment, and the supporting protrusion structure is configured to support a ventilation and noise reduction core of a ventilation and noise reduction unit disposed on the ventilation-noise reduction unit mounting wall segment, so that a ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the ventilation-noise reduction unit mounting wall segment.
Further, the supporting protrusion structure is arranged close to the exhaust vents.
Further, the ventilation-noise reduction unit mounting wall segment includes an end face wall that extends outward in a radial direction, and the exhaust vents and the supporting protrusion structure are formed on the end face wall.
Further, the supporting protrusion structure includes an inclined surface between an upper surface and a front end surface of an outer end, in the radial direction, of the supporting protrusion structure.
In an embodiment, the supporting protrusion structure includes a plurality of radially extending convex ribs that are spaced in a circumferential direction, and the exhaust vents are spaced in the circumferential direction, and arranged between adjacent radially extending convex ribs.
Optionally, in an embodiment, the exhaust vents are spaced in the circumferential direction, and the supporting protrusion structure includes a circumferential protrusion located outside the exhaust vents in the radial direction.
Optionally, in an embodiment, the supporting protrusion structure includes a plurality of radially extending convex ribs that are spaced in the circumferential direction, and a plurality of protrusion groups that are spaced in the circumferential direction, the exhaust vents are spaced in the circumferential direction and arranged between adjacent radially extending convex ribs; the plurality of protrusion groups are located outside the exhaust vents in the radial direction, one of the protrusion groups is arranged between the adjacent radially extending convex ribs, and each of the protrusion groups includes a plurality of protrusions spaced in the circumferential direction.
Further, the supporting protrusion structure includes a plurality of rib segments in the circumferential direction, and a plurality of radially extending convex ribs that are spaced in the circumferential direction; the exhaust vents are spaced in the circumferential direction and arranged between adjacent radially extending convex ribs, one of the rib segments in the circumferential direction is arranged between adjacent radially extending convex ribs, and the rib segments in the circumferential direction are located outside the exhaust vents in the radial direction.
Further, the present application provides a ventilation and noise reduction assembly including a ventilation and noise reduction unit and any ventilation and noise reduction housing described above. The ventilation and noise reduction unit includes the ventilation and noise reduction core and a shell formed with a ventilation opening, the shell is connected to the ventilation-noise reduction unit mounting wall segment, the ventilation and noise reduction core is provided between the shell and the ventilation-noise reduction unit mounting wall segment, and is supported by the supporting protrusion structure, the ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the ventilation-noise reduction unit mounting wall segment, and the exhaust vents communicate with the ventilation opening through the ventilation and noise reduction core and the ventilation gap.
Further, the present application provides a ventilation and moisture retention apparatus including a ventilation and moisture retention apparatus housing and any ventilation and noise reduction housing as described above. The ventilation and moisture retention apparatus housing is connected to the ventilation and noise reduction housing connection end. The ventilation and moisture retention apparatus housing includes a breathing mask communication end, and the ventilation and moisture retention apparatus includes a respiratory passage between the breathing mask communication end and the respiratory tube communication end, and the respiratory passage includes the respiratory passage segment; the respiratory passage includes a ventilation and moisture retention unit receiving segment located between the breathing mask communication end and the respiratory tube communication end. The ventilation and moisture retention unit receiving segment is configured to receive the ventilation and moisture retention unit for allowing inhaled gas to pass through and hindering moisture and heat in the exhaled gas to pass through; the ventilation-noise reduction unit mounting wall segment is located between the ventilation and moisture retention unit receiving segment and the respiratory tube communication end.
Further, the ventilation and moisture retention unit includes the ventilation and noise reduction unit including the ventilation and noise reduction core and a shell formed with a ventilation opening. The shell is connected to the ventilation-noise reduction unit mounting wall segment, the ventilation and noise reduction core is provided between the housing and the ventilation and noise reduction unit mounting wall segment, and is supported by the supporting protrusion structure, a ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the ventilation-noise reduction unit mounting wall segment, and the exhaust vents communicate with the ventilation opening through the ventilation and noise reduction core and the ventilation gap.
Further, the ventilation and moisture retention apparatus includes a ventilation and moisture retention unit provided in the ventilation and moisture retention unit receiving segment.
Further, the ventilation and moisture retention unit includes an internal airway and an annular outer air cleft provided outside the internal airway. A ventilation and moisture retention core is provided inside the internal airway, the ventilation and moisture retention core is configured to allow inhaled gas to pass through and hinder moisture and heat in the exhaled gas to pass through. At least at an end portion of the ventilation and moisture retention unit facing the respiratory tube communication end, an annular outer sidewall of the outer air cleft extends axially beyond an annular inner sidewall of the outer air cleft, and one end of the annular inner sidewall includes an incoming air deflection surface for deflecting a portion of the axially flowing breathing gas toward the outer air cleft.
Further, the present application provides a breathing mask assembly including a breathing mask and the ventilation and noise reduction assembly described above. the breathing mask includes a mask body having a breathing cavity, the respiratory passage segment being in communication with the breathing cavity; or the breathing mask assembly includes a breathing mask and any of the ventilation and moisture retention apparatuses described above, and the breathing mask includes a mask body having a breathing cavity, the breathing mask communication end communicating with the breathing cavity.
Further, the present application provides a breathing support device including a ventilator, a respiratory tube, and the breathing mask assembly described above, the ventilator communicating with the respiratory tube communication end through the respiratory tube.
1—respiratory passage segment, 2—ventilation and noise reduction housing connection end, 3—respiratory tube communication end, 4—ventilation-noise reduction unit mounting wall segment, 5—exhaust vent, 6—ventilation and noise reduction unit, 7—ventilation and noise reduction core, 8—ventilation gap, 9—end face wall, 10—radially extending convex rib, 11—protrusion group, 12—circumferential protrusion, 13—circumferential convex rib segment, 14—ventilation and noise reduction housing, 15—shell, 16—ventilation opening, 17—ventilation and moisture retention apparatus, 18—ventilation and moisture retention apparatus housing, 19—breathing mask communication end, 20—respiratory passage, 21—ventilation and moisture retention unit receiving segment, 22—ventilation and moisture retention unit, 23—ventilation and noise reduction assembly, 24—mask body, 25—internal airway, 26—external air cleft, 27—ventilation and moisture retention core, 28—connection sleeve, 29—inclined surface, 30—annular outer sidewall, 31—annular inner sidewall, 32—incoming air deflection surface.
It should be noted that, embodiments and features in the embodiments of the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
With reference to
In this technical solution, the ventilation-noise reduction unit mounting wall segment 4 is provided with exhaust vents 5 and the supporting protrusion structure protruding from the outer surface of the ventilation-noise reduction unit mounting wall segment 4; the supporting protrusion structure is configured to support the ventilation and noise reduction core 7 of the ventilation and noise reduction unit 6 provided on the ventilation-noise reduction unit mounting wall segment 4, such that a ventilation gap 8 is at least partially maintained between the ventilation and noise reduction core 7 and the outer surface of the ventilation-noise reduction unit mounting wall segment 4. Therefore, in the practical use of the ventilation and noise reduction housing 14, the ventilation and noise reduction unit 6 can be provided on the ventilation-noise reduction unit mounting wall segment 4, and the supporting protrusion structure supports the ventilation and noise reduction core 7 so that the ventilation gap 8 is at least partially maintained between the ventilation and noise reduction core 7 and the outer surface of the wall segment 4. When the exhaled exhaust gas is discharged from the exhaust vents 5, due to the ventilation gap 8, the exhaled exhaust gas will be discharged to the outside of the ventilation and noise reduction unit 6 through the ventilation gap 8 and the ventilation and noise reduction core 7, and the flow of the exhaled exhaust gas can be indicated by arrows in
The number of the exhaust vents 5 may be one, or may be more. A plurality of exhaust vents 5 may be arranged in a circumferential direction on only a segment of the circumferential wall, for example, a half of the circumferential wall, of the ventilation-noise reduction unit mounting wall segment 4, or may be arranged on a circle of the circumferential wall of the ventilation-noise reduction unit mounting wall segment 4.
In the ventilation and noise reduction housing 14, the supporting protrusion structure may be arranged at any position of the outer surface of the ventilation-noise reduction unit mounting wall segment 4 as long as it can support the ventilation and noise reduction core 7 of the ventilation and noise reduction unit 6 provided on the ventilation-noise reduction unit mounting wall segment 4 such that the ventilation gap 8 is at least partially maintained between the ventilation and noise reduction core 7 and the outer surface of the ventilation-noise reduction unit mounting wall segment 4. For example, the supporting protrusion structure may be provided at a position away from the exhaust vents 5. Alternatively, the supporting protrusion structure is arranged close to the exhaust vents 5, so that, for the ventilation and noise reduction core 7 made of a softer material, the supporting protrusion structure adjacent to the exhaust vent 5 can more easily support the ventilation and noise reduction core 7, thereby preventing the ventilation and noise reduction core 7 from covering all the exhaust vents 5. For example, when there are multiple exhaust vents 5, the ventilation and noise reduction core 7 can be prevented from blocking some of the exhaust vents 5.
In addition, in the ventilation and noise reduction housing 14, the ventilation-noise reduction unit mounting wall segment 4 may have various shapes, as long as it is formed with the exhaust vents 5 and the supporting protrusion structure so that the ventilation and noise reduction unit 6 can be mounted. For example, in one structure form, the ventilation-noise reduction unit mounting wall segment 4 includes an axial wall extending in an axial direction, on which exhaust vents are formed and from which the supporting protrusion structure extends, and the ventilation and noise reduction unit 6 may be mounted on the outer surface of the axial wall. Alternatively, referring to
In addition, referring to
Further, in the ventilation and noise reduction housing 14, the supporting protrusion structure may have various shapes as long as the supporting protrusion structure can support the ventilation and noise reduction core 7 so that the ventilation gap 8 is at least partially maintained between the ventilation and noise reduction core 7 and the outer surface of the ventilation-noise reduction unit mounting wall segment 4. For example, in a first shape of the supporting protrusion structure, the supporting protrusion structure may include a first ring convex plate and a second ring convex plate. The first ring convex plate and the second ring convex plate may be spaced in the axial direction, or the first ring convex plate is spaced outside the second ring convex plate in the radial direction. The exhaust vents 5 are located between the first ring convex plate and the second ring convex plate, the ventilation and noise reduction core 7 may be supported by the first ring convex plate and the second ring convex plate so as to at least partially maintain the ventilation gap 8 with the outer surface of the ventilation-noise reduction unit mounting wall segment 4. The first ring convex plate and the second ring convex plate each is formed with a ventilation notch. Thus, a part of the exhaled exhaust gas discharged from the exhaust vents 5 can be discharged from the ventilation and noise reduction core 7, and another part of the exhaled exhaust gas flows into the ventilation gap 8 from the ventilation notch. The first and second ring convex plates may be provided on the aforementioned axial wall, the end face wall 9 or the inclined wall inclining outward in the axial direction.
As another example, in a second shape of the supporting protrusion structure, with reference to
The plurality of radially extending convex ribs 10 may be provided on the aforementioned axial wall, the end face wall 9 or the inclined wall inclined outward in the axial direction. The plurality of radially extending convex ribs 10 may be arranged close to the exhaust vents. The inclined surface 29 may be provided between the upper surface and the front end surface of the radially outer ends of each of the plurality of radially extending convex ribs 10.
As yet another example, in a third shape of the supporting protrusion structure, referring to
As another example, in a fourth form of the supporting protrusion structure, with reference to
As another example, in a fifth shape of the supporting protrusion structure, referring to
In addition, the ventilation and noise reduction housing 14 may be made of materials such as PP, PC, nylon or polycarbonate PC, preferably PC. The wall thickness of the ventilation and noise reduction housing 14 is 1 to 3 mm, preferably 1.5 mm. The internal dimension of the exhaust vent 5, for example the diameter, is 0.5 to 1.5 mm, preferably 0.8 mm. When there are multiple exhaust vents 5, the vent spacing between the exhaust vents 5 is 2 to 8 mm, preferably 4 mm. Further, the height of the radially extending convex rib 10, the circumferential protrusion 12 and the circumferential convex rib segment 13 may be 0.5 mm to 3.5 mm, preferably 1 mm, and the thickness of the radially extending convex rib 10, the circumferential protrusion 12 and the circumferential convex rib segment 13 may be 0.5 mm to 2 mm, preferably 1 mm.
In addition, the ventilation and noise reduction housing connection end 2 may have various structural forms as long as the ventilation and noise reduction housing 14 can be connected. For example, referring to
Further, the present disclosure provides a ventilation and noise reduction assembly 23. Referring to
As described above, in practical use of the ventilation and noise reduction assembly 23, the supporting protrusion structure supports the ventilation and noise reduction core 7 so that the ventilation gap 8 is at least partially maintained between the ventilation and noise reduction core 7 and the outer surface of the ventilation-noise reduction unit mounting wall segment 4. When the exhaled exhaust gas is discharged from the exhaust vents 5, the exhaled exhaust gas will be discharged to the outside of the ventilation and noise reduction unit 6 through the ventilation gap 8 and the ventilation and noise reduction core 7 due to the ventilation gap 8, and the flow of the exhaled exhaust gas can be indicated by the arrow in
The ventilation and noise reduction core 7 may be made of filter media or a silk mass. Moreover, the shape of the ventilation and noise reduction core 7 may be selected accordingly according to the arrangement shape of the exhaust vents 5. For example, for the exhaust vents 5 shown in
Moreover, the shell 15 may have various configurations. For example, the shell 15 may be an annular net that may be clamped on the passage segments. For example, referring to
Further, the present disclosure provides a ventilation and moisture retention apparatus, and with reference to
In the technical solution, the ventilation and moisture retention unit receiving segment 21 is configured to receive and arrange the ventilation and moisture retention unit 22 that allows the breathing gas to pass through and retards moisture and heat in the exhaled gas to pass through, and the ventilation-noise reduction unit mounting wall segment 4 is located between the ventilation and moisture retention unit receiving segment 21 and the respiratory tube communication end 3. In this way, in use, the ventilation and moisture retention unit 22 that allows the breathing gas to pass through and capable of retard moisture and heat in the exhaled gas to pass though may be provided within the ventilation and moisture retention unit receiving segment 21. The ventilation and moisture retention unit 22 can be used for allowing the breathing gas to pass through and retarding the moisture and heat in the exhaled gas to pass through, and the breathing mask communication end is communicated with the breathing mask, so that the exhaled gas (exhaust gas) of a wearer can pass through the ventilation and moisture retention unit and be exhausted from the vents. In this case, since the moisture and heat in the exhaled air are retarded by the ventilation and moisture retention unit, the humidity in the passage segment between the breathing mask communication end and the ventilation and moisture retention unit will increase, and the moisture may condense in the ventilation and moisture retention unit 22 so that the internal humidity of the ventilation and moisture retention unit also increases. Moreover, the heat contained in the exhaled gas increases the temperature of the passage segment between the breathing mask communication end and the ventilation and moisture retention unit, and increases the temperature of the ventilation and moisture retention unit. As a result, when breathable gas supplied to the wearer passes through the ventilation and moisture retention unit and the passage segment between the breathing mask communication end and the ventilation and moisture retention unit, due to the action of increased humidity and increased temperature, moist and warm breathable gas can be supplied to the wearer by the ventilation and moisture retention apparatus. Therefore, the comfortable sensation of wearing the breathing mask is improved. Moreover, the ventilation and moisture retention apparatus can be communicated with the breathing mask and the respiratory tube, and since the breathing mask and the respiratory tube are light and convenient, the ventilation and moisture retention apparatus is small in volume and can be carried with flexibility and it is possible to provide moist and warm breathing gas to the wearer of the breathing mask in a flexible and convenient way. Of course, if it is desired, the ventilation and moisture retention unit receiving segment may be used to receive and hold ventilation and moisture retention units of at least two different specifications, so that a desired ventilation and moisture retention unit can be flexibly and conveniently replaced. Moreover, as stated above, since the supporting protrusion structure supports the ventilation and noise reduction core so that the ventilation gap is at least partially maintained between the ventilation and noise reduction core and the outer surface of the wall segment for mounting a ventilation and noise reduction unit, when the exhaled exhaust gas is discharged from the exhaust vents, due to the ventilation gap, the exhaled exhaust gas will pass through the ventilation gap and the ventilation and noise reduction core and be discharged to the outside from the ventilation opening, and due to the mitigation effect of the ventilation and noise reduction core on the exhaled exhaust gas, the noise generated by flushing on the exhaust vents with the exhaled exhaust gas are reduced and the mute effect is improved. Moreover, a small portion of impurities, such as dust, carried in the exhaled exhaust gas may accumulate on the ventilation and noise reduction core, and most of the impurities will smoothly pass through the ventilation gap along with the exhaled exhaust gas to be discharged to the outside, or accumulated at a position away from the exhaust vents. Therefore, the exhaust vents will not be blocked, thereby reducing the use risk of the user and improving the hygiene to improve the therapeutic effect.
In addition, with reference to
In addition, the ventilation and moisture retention unit 22 may be not included in the ventilation and moisture retention apparatus, and in use, it may be fitted into the ventilation and moisture retention unit receiving segment 21. Alternatively, referring to an embodiment shown in
Further, the ventilation and moisture retention unit 22 may have various forms. For example,
Further, referring to
Moreover, the incoming air deflection surface 32 may be formed at one end of the annular inner sidewall 31 in various ways. For example, a portion of the end of the annular inner sidewall 31 shown in
Further, the respiratory tube communication end 3 may be directly connected to the respiratory tube, or may be fitted with a connection sleeve 28 which may be connected to the respiratory tube.
Further, the present disclosure provides a breathing mask assembly. Referring to
Further, the present disclosure provides a breathing mask assembly. Referring to
Finally, the present disclosure provides a breathing support device including a ventilator (not shown), a respiratory tube (not shown) and a breathing mask assembly as described above. The ventilator communicates with the respiratory tube communication end 3 through the respiratory tube. Thus, as described above, the quality of the breathing support device is effectively improved.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited thereto. Many simple variations of the solution of the present disclosure are possible within the scope of the technical idea of the present disclosure. The particular features included are combined in any suitable manner. To avoid unnecessary repetitions, the present disclosure does not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the disclosure of the present disclosure and all fall within the scope of the present disclosure.
Number | Date | Country | Kind |
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202120745619.0 | Apr 2021 | CN | national |
This application is the national phase entry of International Application No. PCT/CN2022/086380, filed on Apr. 12, 2022, which is based upon and claims priority to Chinese Patent Application No. 202120745619.0, filed on Apr. 13, 2021, the entire contents of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2022/086380 | 4/12/2022 | WO |