WO2021136153A1 - 安全阀片、呼吸管、呼吸管组件和呼吸面罩 - Google Patents

安全阀片、呼吸管、呼吸管组件和呼吸面罩 Download PDF

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Publication number
WO2021136153A1
WO2021136153A1 PCT/CN2020/140021 CN2020140021W WO2021136153A1 WO 2021136153 A1 WO2021136153 A1 WO 2021136153A1 CN 2020140021 W CN2020140021 W CN 2020140021W WO 2021136153 A1 WO2021136153 A1 WO 2021136153A1
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WO
WIPO (PCT)
Prior art keywords
safety valve
breathing tube
breathing
hole
sheet
Prior art date
Application number
PCT/CN2020/140021
Other languages
English (en)
French (fr)
Inventor
何垄
周明钊
庄志
Original Assignee
北京怡和嘉业医疗科技股份有限公司
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
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Application filed by 北京怡和嘉业医疗科技股份有限公司 filed Critical 北京怡和嘉业医疗科技股份有限公司
Priority to US17/790,141 priority Critical patent/US20230043056A1/en
Priority to EP20909979.5A priority patent/EP4085953A4/en
Priority to JP2022540539A priority patent/JP2023509926A/ja
Priority to AU2020418132A priority patent/AU2020418132B2/en
Publication of WO2021136153A1 publication Critical patent/WO2021136153A1/zh

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    • 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
    • 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
    • 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
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • 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
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • 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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • 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
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • 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
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0633—Means for improving the adaptation of the mask to the patient with forehead support
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0225—Carbon oxides, e.g. Carbon dioxide
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0216—Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/42—Reducing noise
    • 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
    • A61M2206/00—Characteristics of a physical parameter; associated device therefor
    • A61M2206/10—Flow characteristics
    • A61M2206/22—Flow characteristics eliminating pulsatile flows, e.g. by the provision of a dampening chamber
    • 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
    • A61M2207/00—Methods of manufacture, assembly or production
    • A61M2207/10—Device therefor

Definitions

  • the present invention relates to the field of medical equipment, in particular to a safety valve sheet, a breathing tube, a breathing tube assembly and a breathing mask.
  • full-face masks on the market can be divided into exhaust masks and non-exhaust masks according to different exhaust methods.
  • the row mask is connected to a pressure support device such as a ventilator through a pipe, so as to connect the gas pressure provided by the ventilator to the airway of the patient.
  • the exhaust mask is equipped with special exhaust holes on the end of the mask to facilitate the exhaust of breathing exhaust gas.
  • the full face mask is usually equipped with a safety valve hole.
  • a safety valve disc is arranged at the safety valve hole inside the exhaust mask.
  • the existing exhaust solutions for full-face masks can be divided into two types. One solution is to arrange both the exhaust hole and the safety valve hole on the elbow of the mask. Another solution is to set the exhaust hole on the mask frame and set the safety valve hole on the elbow.
  • the ventilator when the ventilator is working normally, it is divided into two states: inhalation and exhalation.
  • suction state the air pressure pushes up the safety valve plate and blocks the safety valve hole. Part of the airflow from the ventilator is delivered to the patient, and part is discharged through the exhaust hole.
  • exhalation state the air pressure pushes up the safety valve plate and blocks the safety valve hole.
  • the airflow from the ventilator and the exhaust gas exhaled by the patient are discharged through the exhaust hole.
  • the safety valve plate recovers to the extended state due to its own elastic force, blocking the ventilator pipeline and opening the safety valve hole. The patient can breathe through the exhaust hole and safety valve hole to prevent suffocation.
  • the current structure also has certain shortcomings. For example, most patients use a face mask for a long time in a quiet environment at night, and the noise is loud when the face mask is exhausted, which usually affects the sleep quality of the patient and the bed partner. For another example, this type of mask or elbow has a relatively large volume, a relatively complex structure, and relatively high material costs and economic costs.
  • the object of the present invention is to provide a safety valve disc, which has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • the present invention provides a safety valve sheet, which is used to be arranged in a breathing tube with a safety valve hole of a breathing mask.
  • the safety valve sheet includes a sheet body, and the sheet body includes Capable of covering the outer surface of the safety valve hole, wherein a protrusion is formed on the outer surface, and the protrusion is used to contact the inner surface of the edge of the safety valve hole when the sheet body covers the safety valve hole A vent gap is formed between the outer surface and the edge of the orifice.
  • the safety valve sheet is formed with protrusions on the outer surface of the sheet body.
  • the sheet body is a flexible body.
  • the height of the protrusions relative to the outer surface is 0.1-1.2 mm; and/or, the protrusions are multiple and arranged at intervals.
  • the present invention provides a breathing tube, which has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • a breathing tube provided in this aspect is used to connect to an air chamber cover of a breathing mask, and a safety valve hole is formed on the wall of the breathing tube, wherein the safety valve hole is on the inner side surface of the orifice edge A protrusion is formed to contact the outer surface of the safety valve sheet when the safety valve sheet covers the safety valve hole inside the breathing tube to form an exhaust gap between the outer surface and the edge of the orifice .
  • the safety valve plate is set in the breathing tube, the user breathes in and exhales normally through the breathing mask, the safety valve The sheet will cover the safety valve hole.
  • an exhaust gap is formed between the outer surface of the safety valve sheet and the edge of the orifice.
  • the exhaust gap is discharged, which reduces exhaust noise.
  • the height of the protrusions relative to the inner side surface of the orifice edge is 0.1-1.2mm; and/or, the protrusions are multiple and are arranged at intervals along the circumferential direction of the orifice edge .
  • the present invention provides a breathing tube assembly that has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • a breathing tube assembly provided by the present invention includes a breathing tube and a safety valve plate, a safety valve hole is formed on the tube wall of the breathing tube, and the safety valve plate can be movably arranged in the breathing tube;
  • the safety valve disc includes a covered state capable of covering the safety valve hole and an open state capable of opening the safety valve hole; wherein, in the covered state, the safety valve disc and the edge of the safety valve hole There is an exhaust gap between.
  • due to the covering state there is an exhaust gap between the safety valve plate and the edge of the safety valve hole.
  • the breathing tube is connected to the air chamber cover of the breathing mask, and the user passes through the breathing mask.
  • the safety valve sheet In the process of normal inhalation and exhalation, the safety valve sheet will cover the safety valve hole. At this time, due to the exhaust gap between the safety valve sheet and the edge of the safety valve hole, the exhaust gas exhaled by the user will be exhausted. The gap is discharged, which reduces exhaust noise. In addition, there is no need to provide an additional exhaust structure on the breathing tube of the breathing mask, so that the breathing mask has a simple structure and reduces costs.
  • the safety valve disc is any of the safety valve discs described in the first aspect, and/or, the breathing tube is the breathing tube of any of the second aspects mentioned above.
  • a breathing tube assembly that has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • a breathing tube assembly provided by the present invention includes a breathing tube and a safety valve plate.
  • a plurality of spaced exhaust holes are formed on the wall of the breathing tube.
  • the safety valve plate can be movably arranged at the place.
  • the safety valve sheet includes a covering state capable of covering at least a part of the exhaust hole and an open state capable of opening the covered exhaust hole.
  • the safety valve sheet will cover a part of the exhaust hole. At this time, the exhaust gas exhaled by the user will be discharged from other exhaust holes that are not covered by the safety valve sheet, thereby reducing exhaust noise. In addition, there is no need to breathe in the breathing mask.
  • An additional exhaust structure is arranged on the pipe, so that the structure of the breathing mask is simple and the cost is reduced.
  • vent hole is a round hole or a strip hole.
  • the present invention provides a breathing tube assembly that has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • a breathing tube assembly provided by the present invention includes a breathing tube and a safety valve disc.
  • a safety valve hole and a plurality of exhaust holes spaced around the safety valve hole are formed on the tube wall of the breathing tube.
  • the safety valve sheet can be movably arranged in the breathing tube; the safety valve sheet includes a covering state capable of covering the safety valve hole and an open state capable of opening the safety valve hole.
  • the exhaust gas exhaled by the user will be discharged from the multiple exhaust holes surrounding the safety valve hole, thereby reducing exhaust noise.
  • the exhaust structure makes the structure of the breathing mask simple and reduces the cost.
  • the exhaust hole is a round hole or a strip hole; and/or, in the covered state, an exhaust gas is formed between the outer surface of the safety valve plate and the edge of the safety valve hole. Gap.
  • the present invention provides a safety valve sheet, which has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • the present invention provides a safety valve sheet for setting in a breathing tube with a safety valve hole of a breathing mask.
  • the safety valve sheet includes a sheet body capable of covering the safety valve hole, and the sheet body is A plurality of vent holes arranged at intervals are formed.
  • the exhaust gas exhaled by the user will be discharged from the multiple exhaust holes on the sheet body, which reduces the exhaust noise.
  • the exhaust structure makes the structure of the breathing mask simple and reduces the cost.
  • the sheet body is a flexible body.
  • the present invention provides a breathing tube assembly, which includes a breathing tube and the safety valve sheet of any of the above sixth aspects, a safety valve hole is formed on the tube wall of the breathing tube, and
  • the safety valve disc can be movably arranged in the breathing tube; the safety valve disc includes a covering state capable of covering the safety valve hole and an open state capable of opening the safety valve hole.
  • the breathing tube assembly has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • an exhaust gap is formed between the outer surface of the safety valve sheet and the edge of the safety valve hole.
  • the present invention provides a breathing mask, including an air chamber mask and a breathing tube assembly, the breathing tube assembly being any of the breathing tube assemblies described in the third aspect; or, the breathing tube assembly being the first The breathing tube assembly of any of the four aspects; or, the breathing tube assembly is the breathing tube assembly of any of the fifth aspects; or, the breathing tube assembly is the breathing tube of any of the seventh aspects. Tube assembly; wherein, one end of the breathing tube is connected to the air chamber cover.
  • the breathing mask has a simple structure and can effectively reduce exhaust noise.
  • Fig. 1 is a schematic front view of a first safety valve disc according to a specific embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 3 is a schematic diagram of an enlarged structure of the circled part in FIG. 2;
  • FIG. 4 is a schematic structural diagram of the first breathing tube assembly according to a specific embodiment of the present invention, showing the safety valve sheet shown in FIG. 1;
  • Figure 5 is a cross-sectional view taken along line B-B in Figure 4, in which the safety valve disc is in a covered state;
  • FIG. 6 is a schematic diagram of an enlarged structure of the circled part in FIG. 5;
  • Fig. 7 is a schematic diagram of the safety valve plate in Fig. 5 in an open state
  • FIG. 8 is a schematic cross-sectional structure diagram of a second breathing tube assembly according to a specific embodiment of the present invention, in which the safety valve plate is in an open state;
  • Fig. 9 is an enlarged view of the partial structure of the circled part in Fig. 8.
  • Figure 10 is a cross-sectional view taken along line L-L in Figure 8.
  • Figure 11 is a schematic structural diagram of a third breathing tube assembly according to a specific embodiment of the present invention.
  • Figure 12 is a cross-sectional view taken along line C-C in Figure 11, in which the safety valve disc is in a covered state;
  • Figure 13 is a schematic diagram of the safety valve plate in Figure 12 in an open state
  • Fig. 14 is a schematic structural diagram of a fourth breathing tube assembly according to a specific embodiment of the present invention.
  • Fig. 15 is a cross-sectional view taken along line G-G in Fig. 14, in which the safety valve disc is in a covered state;
  • Figure 16 is a schematic diagram of the safety valve plate in Figure 15 in an open state
  • Figure 17 is a schematic structural diagram of a fifth breathing tube assembly according to a specific embodiment of the present invention.
  • Figure 18 is a cross-sectional view taken along line E-E in Figure 17, in which the safety valve disc is in a covered state;
  • Figure 19 is a schematic diagram of the safety valve plate in Figure 18 in an open state
  • Fig. 20 is a schematic structural diagram of a sixth breathing tube assembly according to a specific embodiment of the present invention.
  • Figure 21 is a cross-sectional view taken along line I-I in Figure 20, in which the safety valve disc is in a covered state;
  • Figure 22 is a schematic diagram of the safety valve plate in Figure 21 in an open state
  • Figure 23 is a schematic structural diagram of a second safety valve disc according to a specific embodiment of the present invention.
  • FIG. 24 is a schematic cross-sectional structure diagram of a seventh breathing tube assembly according to a specific embodiment of the present invention, in which the safety valve sheet is in a covered state, and shows the safety valve sheet shown in FIG. 23;
  • FIG. 25 is an enlarged view of the circled part in FIG. 24;
  • Figure 26 is a schematic diagram of the safety valve plate in Figure 24 in an open state
  • Fig. 27 is a schematic structural diagram of a breathing mask provided according to a specific embodiment of the present invention.
  • the first safety valve sheet 1 provided by the present invention is used to be arranged in the breathing tube 4 with the safety valve hole 3 of the breathing mask 2, as shown in Figures 5 to 7
  • the safety valve sheet includes a sheet body 5, which includes an outer surface 6 capable of covering the safety valve hole 3, wherein a protrusion 7 is formed on the outer surface 6 and the protrusion 7 is used in the sheet body 5
  • the safety valve sheet is formed with protrusions on the outer surface of the sheet body.
  • the safety valve disc 1 includes a connecting block connected to the sheet body 5, and the connecting block is connected to the sheet body 5 through a transitional connecting sheet, wherein the thickness of the transitional connecting sheet is smaller than that of the sheet The body 5 and the connecting block, so that the connecting block can be clamped in the bayonet on the wall of the breathing tube below the safety valve hole, as shown in Figure 5, so that the sheet body 5 can be connected to the breathing tube 4 within.
  • the connection method of the safety valve sheet 1 and the breathing tube 4 is not limited to this.
  • one end of the sheet body 5 is formed with a flange, and the flange may be bonded to the inner surface of the breathing tube 4 or It is connected to the inner surface of the breathing tube 4 by fasteners such as screws.
  • the sheet body 5 may be a rigid body made of a hard material.
  • the transition piece described above may have elasticity, so that the sheet body 5 may be free of air pressure from, for example, a ventilator. From the covered state of covering the safety valve hole to the open state of opening the safety valve hole automatically and elastically, for example, the state shown in FIG. 5 is switched to the state shown in FIG. 7.
  • the sheet body 5 is a flexible body.
  • the aforementioned connecting block and transition sheet are integrally formed with the sheet body 5 to form a flexible body.
  • the flexible body may be made of a soft material such as silicone.
  • the flexible body is a flexible elastic sheet covered with soft rubber on the surface. In this way, a flexible body such as a soft silicone material or a soft rubber surface layer of a flexible elastic sheet can slow down the vibration of the airflow and further reduce the exhaust noise.
  • the shape of the protrusion 7 may be any shape such as a dotted ball, a rectangular table, or a circular table.
  • the protrusions 7 may be one or multiple and arranged at intervals.
  • a plurality of protrusions 7 are distributed on the outer surface 6 of the sheet body in any other distribution form such as dot matrix, linear, divergent, or circular.
  • the outer surface 6 can be understood as: the side surface of the safety valve sheet 1 that is pushed up by the airflow from, for example, a ventilator, and contacts the inner surface of a breathing tube, such as an elbow.
  • the height of the protrusion 7 relative to the outer surface 6 is 0.1-1.2 mm, so that the exhaust gap 9 can be made as small as possible while satisfying the exhaust, so as to further reduce the exhaust noise.
  • the height of the protrusion 7 relative to the outer surface 6 is 0.2 mm-0.8 mm. More preferably, the height of the protrusion 7 relative to the outer surface 6 is 0.5 mm.
  • the height of the protrusion 7 relative to the outer surface 6 is not limited to this, if necessary, it can also be any other value, which is not listed here in this application.
  • the breathing tube 4 provided by the present invention is used to connect to the air chamber mask 10 of the breathing mask 2.
  • the breathing tube 4 is formed with The safety valve hole 3, wherein a protrusion 7 is formed on the inner surface of the orifice edge 8 of the safety valve hole 3, and the protrusion 7 is used to communicate with the safety valve sheet when the safety valve sheet covers the safety valve hole 3 inside the breathing tube.
  • the outer surface 6 of 1 contacts to form an exhaust gap 9 between the outer surface 6 and the edge 8 of the orifice.
  • the breathing tube has a simple structure and can effectively reduce exhaust noise after being applied to a breathing mask.
  • the height of the protrusion 7 relative to the inner surface of the orifice edge 8 is 0.1-1.2 mm, so that the exhaust gap 9 can be made as small as possible while satisfying the exhaust, so as to further reduce the exhaust noise.
  • the height of the protrusion 7 relative to the inner surface of the orifice edge 8 is 0.2 mm-0.8 mm. More preferably, the height of the protrusion 7 relative to the inner surface of the orifice edge 8 is 0.5 mm.
  • the height of the protrusion 7 relative to the inner surface of the orifice edge 8 is not limited to this, and can be any other value if necessary, and this application will not list them one by one here.
  • the shape of the protrusion 7 can be any shape such as a dotted ball, a rectangular platform, or a circular platform.
  • the protrusions 7 can be one or more and are arranged at intervals along the circumferential direction of the edge of the orifice.
  • the protrusions 7 can be distributed along the hole in any form of lattice, linear, divergent, or circular, etc.
  • the mouth edges are arranged at intervals in the circumferential direction.
  • the breathing tube 4 can be a curved tube, or a straight tube, or another curved tube, which can be selected according to actual needs.
  • the present invention provides a breathing tube assembly, referring to Figures 5 and 7 and Figure 8.
  • the breathing tube assembly includes a breathing tube 4 and a safety valve plate 1.
  • a safety valve hole 3 is formed on the wall of the breathing tube 4 .
  • the safety valve sheet 1 can be movably arranged in the breathing tube 4; the safety valve sheet 1 includes a covered state that can cover the safety valve hole 3 and an open state that can open the safety valve hole 3; wherein, in the covered state, the safety valve sheet There is an exhaust gap 9 between 1 and the edge of the safety valve hole 3.
  • due to the covering state there is an exhaust gap between the safety valve plate and the edge of the safety valve hole.
  • the breathing tube is connected to the air chamber cover of the breathing mask, and the user passes through the breathing mask.
  • the safety valve sheet will cover the safety valve hole.
  • the exhaust gap between the safety valve sheet and the edge of the safety valve hole the exhaust gas exhaled by the user will be exhausted.
  • the gap is discharged to achieve a small flow of exhaust and reduce the exhaust noise.
  • there is no need to install an additional exhaust structure on the breathing tube of the breathing mask which makes the structure of the breathing tube simple, and the structure of the plastic mold for making the breathing tube is simple Therefore, the industrial cost is reduced, the structure of the breathing mask is further simplified, and the cost is reduced.
  • the exhaust gap 9 can be formed in a variety of ways.
  • the safety valve plate 1 and the tube wall of the breathing tube 4 are connected through Structural connection, the safety valve plate 1 rotates toward the safety valve hole 3 under the action of gas pressure from, for example, a ventilator, so that when the safety valve hole 3 is about to be covered, the connection structure will block the safety valve plate 1 from continuing to rotate, so that the safety valve plate A vent gap 9 is formed between 1 and the edge of the safety valve hole 3.
  • the safety valve disc 1 is any of the safety valve discs described in the first aspect (for example, the structure shown in FIGS.
  • the breathing tube 4 is the second Any of the breathing tubes described in the aspect (for example, a structure shown in Figures 8-10).
  • one end of the breathing tube 4 of the breathing tube assembly is connected to the air chamber cover 10 of the breathing mask 2, and the other end of the breathing tube 4 is connected to a pressure support device such as a ventilator.
  • a ventilator When the ventilator is working normally, it is divided into inhalation. There are two states of breath and exhalation. When the user (patient) inhales, the air pressure from the ventilator pushes up the safety valve plate and covers the safety valve hole.
  • the safety valve sheet can be switched from the covered state to the open state, for example, the safety valve sheet returns to the open state (extended state) under its own elastic force, as shown in Figure 7 or Figure 8. As shown, the safety valve hole is opened, so that the patient can breathe through the safety valve hole (as shown by the solid arrow in FIG. 7) to prevent suffocation.
  • the present invention provides a breathing tube assembly.
  • the breathing tube assembly includes a breathing tube 4 and a safety valve plate 1.
  • a plurality of spaces are formed on the wall of the breathing tube 4
  • the safety valve sheet 1 can be movably arranged in the breathing tube 4; the safety valve sheet 1 includes a covering state capable of covering at least a part of the exhaust hole 11 and a covering state capable of opening the covered exhaust hole 11 Open state.
  • the breathing tube is connected to the air chamber cover of the breathing mask. During the normal inhalation and exhalation process of the user through the breathing mask, The safety valve sheet will cover a part of the exhaust hole.
  • the exhaust gas exhaled by the user will be discharged from other exhaust holes that are not covered by the safety valve sheet to achieve low-flow exhaust, thereby reducing exhaust noise.
  • the breathing tube has a simple structure and the plastic mold for making the breathing tube has a simple structure, thereby reducing industrial costs, further making the breathing mask simple in structure and reducing costs.
  • the exhaust hole 11 can have various shapes and have various arrangements.
  • the exhaust hole 11 is a round hole, and Arranged in multiple rows and columns, or arranged in a ring.
  • the vent hole 11 is a small hole.
  • the exhaust holes 11 are strip-shaped holes arranged in multiple rows.
  • the shape and arrangement of the vent holes 11 are not limited to this.
  • the aperture of the exhaust hole 11 gradually becomes larger to form a divergent hole. In this way, the flow rate of the exhaust gas can be slowed down, and the exhaust noise can be further reduced. .
  • the safety valve sheet when the ventilator has a single failure or the ventilator tube is blocked, the safety valve sheet can be switched from the covered state to the open state, for example, the safety valve sheet returns to the open state (extended state) under its own elastic force to Open all the exhaust holes so that the patient can breathe through all the exhaust holes (as shown by the solid arrow in Figure 13) to prevent suffocation.
  • the present invention provides a breathing tube assembly.
  • the breathing tube assembly includes a breathing tube 4 and a safety valve plate 1.
  • a safety valve hole 3 and a plurality of surroundings are formed on the tube wall of the breathing tube 4
  • the safety valve holes 3 are arranged with vent holes 11 at intervals, and the safety valve sheet 1 can be movably arranged in the breathing tube 4; the safety valve sheet 1 includes a covering state that can cover the safety valve hole 3 and an opening that can open the safety valve hole 3 status.
  • the breathing tube is connected to the air chamber cover of the breathing mask, and the safety valve plate is used when the user inhales and exhales through the breathing mask.
  • the breathing tube has a simple structure and the plastic mold for making the breathing tube has a simple structure, thereby reducing industrial costs, further making the breathing mask simple in structure and reducing costs.
  • the safety valve sheet can be switched from the covered state to the open state.
  • the safety valve sheet returns to the open state (extended state) under its own elastic force to open all the exhaust holes. In this way, the patient can breathe through all the exhaust holes and safety valve holes (as shown in Figures 19 and 22) to prevent suffocation.
  • the safety valve hole 3 formed on the pipe wall of the breathing tube 4 and the plurality of vent holes 11 spaced around the safety valve hole 3 can be generated by the same mold position, thereby reducing production costs.
  • the exhaust hole 11 may have various shapes and various arrangements.
  • the exhaust hole 11 is a round hole.
  • the vent hole 11 is a small hole.
  • the vent hole 11 is a strip hole.
  • the shape of the vent hole 11 is not limited to this, and the arrangement of the plurality of vent holes 11 is not limited to the manner shown in FIGS. 17 and 20.
  • an exhaust gap 9 is formed between the outer surface 6 of the safety valve sheet 1 and the orifice edge 8 of the safety valve hole 3. In this way, as described above, the exhaust gas can also be exhausted through the exhaust slit 9.
  • the exhaust gap 9 may be formed between the outer surface 6 and the edge 8 of the safety valve hole 3 by the above-mentioned protrusion, for example.
  • the present invention provides a safety valve disc.
  • the safety valve disc 1 is used to be arranged in the breathing tube 4 with the safety valve hole 3 of the breathing mask 2, and the safety valve disc includes a safety valve that can cover the safety
  • the sheet body 5 of the valve hole 3 is formed with a plurality of vent holes 11 arranged at intervals.
  • the exhaust gas exhaled by the user will be discharged from the multiple exhaust holes on the sheet body to achieve low-flow exhaust, thereby reducing exhaust noise.
  • An additional exhaust structure is provided on the breathing tube, which makes the structure of the breathing tube simple, and makes the structure of the plastic mold for making the breathing tube simple, thereby reducing industrial costs, further making the breathing mask simple in structure and reducing costs.
  • the sheet body 5 may be a rigid body made of a hard material.
  • the transition piece described above may have elasticity, so that the sheet body 5 may be free of air pressure from, for example, a ventilator. From the covered state of covering the safety valve hole to the open state of opening the safety valve hole automatically and elastically, for example, the state shown in FIG. 5 is switched to the state shown in FIG. 7.
  • the sheet body 5 is a flexible body.
  • the aforementioned connecting block and transition sheet are integrally formed with the sheet body 5 to form a flexible body.
  • the flexible body may be made of a soft material such as silicone.
  • the flexible body is a flexible elastic sheet covered with soft rubber on the surface. In this way, a flexible body such as a soft silicone material or a soft rubber surface layer of a flexible elastic sheet can slow down the vibration of the airflow and further reduce the exhaust noise.
  • the plurality of spaced vent holes 11 formed on the sheet body 5 may have any shape, such as round holes or strip-shaped slits, and have various arrangements.
  • the present invention provides a breathing tube assembly that includes a breathing tube 4 and any of the safety valve discs 1 described in the sixth aspect above, and a safety valve hole 3 is formed on the tube wall of the breathing tube 4,
  • the safety valve disc 1 can be movably arranged in the breathing tube 4; the safety valve disc 1 includes a covering state that can cover the safety valve hole 3 and an open state that can open the safety valve hole 3.
  • the exhaust gas exhaled by the user will be exhausted from the multiple exhaust holes on the body of the sheet to achieve low-flow exhaust, thereby reducing exhaust noise.
  • the additional exhaust structure makes the structure of the breathing tube simple, and the structure of the plastic mold for making the breathing tube is simple, thereby reducing industrial costs, further making the breathing mask structure simple, and reducing costs.
  • the safety valve sheet can be switched from the covered state to the open state.
  • the safety valve sheet returns to the open state (extended state) under its own elastic force to open all the exhaust holes. In this way, the patient can breathe through the safety valve hole (as shown in Figures 19 and 22) to prevent suffocation.
  • an exhaust gap 9 is formed between the outer surface 6 of the safety valve disc 1 and the orifice edge 8 of the safety valve hole 3.
  • the exhaust gas can also be exhausted through the exhaust slit 9.
  • the exhaust gap 9 may be formed between the outer surface 6 and the edge 8 of the safety valve hole 3 by the above-mentioned protrusion, for example.
  • the present invention provides a breathing mask 2, which includes an air chamber mask 10 and a breathing tube assembly 12, the breathing tube assembly 12 being any of the breathing tube assemblies described in the third aspect; or ,
  • the breathing tube assembly 12 is the breathing tube assembly described in any of the above-mentioned fourth aspect; or, the breathing tube assembly 12 is the breathing tube assembly described in any of the above-mentioned fifth aspect; or, the breathing tube assembly 12 is the above-mentioned seventh aspect
  • a pressure support device such as a ventilator.
  • the breathing mask 2 includes a mask frame 15, and the mask frame 15 functions to fix and connect the headband when in use.
  • the breathing tube 4, such as the elbow 4 is connected to a ventilator tube and can rotate around the mask frame 15 when in use.
  • a forehead cushion 13 and a cushion 14 are provided on the mask frame 15.
  • the air chamber cover 10 may be provided on the mask frame 15, or a part of the mask frame 15 is formed as the air chamber cover 10.

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Abstract

一种安全阀片（1）、呼吸管（4）、呼吸管组件（12）和呼吸面罩（2）。安全阀片（1）用于设置在呼吸面罩（2）的具有安全阀孔（3）的呼吸管（4）内，安全阀片（1）包括片本体（5），片本体（5）包括用于能够覆盖住安全阀孔（3）的外侧表面（6），其中，外侧表面（6）上形成有凸起（7），凸起（7）用于在片本体（5）覆盖住安全阀孔（3）时与安全阀孔（3）的孔口边沿（8）的内侧表面接触以在外侧表面（6）和孔口边沿（8）之间形成排气缝隙（9）。安全阀片（1）结构简单、在应用到呼吸面罩（2）上后能够有效地降低排气噪音。

Description

安全阀片、呼吸管、呼吸管组件和呼吸面罩
相关申请的交叉引用
本申请要求享有于2019年12月31日提交的名称为“安全阀片、呼吸管、呼吸管组件和呼吸面罩”的中国专利申请CN201911421000.8的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及医疗器械领域，具体地涉及一种安全阀片、一种呼吸管、一种呼吸管组件和一种呼吸面罩。
背景技术
目前市场上全脸面罩按照排气方式不同，可分为有排面罩和无排面罩。有排面罩通过管道与压力支持设备例如呼吸机连接，以将例如呼吸机提供的气体压力和病人的气道相连。有排面罩在面罩端上设置专门排气孔，以便呼吸废气的排出。另外，为了防止呼吸机故障或管道堵塞时的窒息现象，全脸面罩通常会设置安全阀孔。在有排面罩的内部，安全阀孔处设置有安全阀片。例如，现有对于全脸面罩的排气方案可分为两种，一种方案是将排气孔和安全阀孔都设置在面罩的弯管上。另一种方案是将排气孔设置在面罩框架上，将安全阀孔设置在弯管上。
这样，在呼吸机正常工作时，分为吸气和呼气两种状态。吸气状态下，气压将安全阀片推起并堵塞安全阀孔。来自呼吸机的气流，一部分输送给患者，一部分经排气孔排出。在呼气状态下，气压将安全阀片推起并堵塞安全阀孔。来自呼吸机的气流和患者呼出的废气，经排气孔排出。在呼吸机单一故障或呼吸机管道堵塞时，安全阀片由于自身弹力恢复伸展状态，堵塞呼吸机管道并打开安全阀孔。患者可通过排气孔和安全阀孔进行呼吸，防止窒息。
但是，目前的这种结构也存在一定不足，例如，大部分患者在夜晚的安静环境下长时间使用面罩，面罩排气时噪音较大，这通常会影响患者及床伴的睡眠质量。再例如，这种面罩或者弯管体积较大，结构较复杂，物料成本及经济成本相对较高。
发明内容
第一方面，本发明的目的是提供一种安全阀片，该安全阀片结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。
为了实现上述目的，本发明提供一种安全阀片，所述安全阀片用于设置在呼吸面罩的具有安全阀孔的呼吸管内，所述安全阀片包括片本体，所述片本体包括用于能够覆盖住安全阀孔的外侧表面，其中，所述外侧表面上形成有凸起，所述凸起用于在所述片本体覆盖住安全阀孔时与安全阀孔的孔口边沿的内侧表面接触以在所述外侧表面和所述孔口边沿之间形成排气缝隙。在该技术方案中，由于安全阀片的片本体的外侧表面上形成有凸起，这样，该安全阀片应用到呼吸面罩的呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于凸起与安全阀孔的孔口边沿的内侧表面接触，这样就在安全阀片的外侧表面和孔口边沿之间形成排气缝隙，使用者呼出的废气将从排气缝隙排出，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。
进一步地，所述片本体为柔性体。
进一步地，所述凸起相对于所述外侧表面的高度为0.1-1.2mm；和/或，所述凸起为多个并且间隔布置。
第二方面，本发明提供一种呼吸管，该呼吸管结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。
为此，本方面提供的一种呼吸管用于连接于呼吸面罩的气腔罩，所述呼吸管的管壁上形成有安全阀孔，其中，所述安全阀孔的孔口边沿的内侧表面上形成有凸起，所述凸起用于当安全阀片在呼吸管内部覆盖住安全阀孔时与安全阀片的外侧表面接触以在所述外侧表面和所述孔口边沿之间形成排气缝隙。在该技术方案中，由于安全阀孔的孔口边沿的内侧表面上形成有凸起，这样，安全阀片设置在呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于凸起与安全阀片的外侧表面接触，这样就在安全阀片的外侧表面和孔口边沿之间形成排气缝隙，使用者呼出的废气将从排气缝隙排出，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。
进一步地，所述凸起相对于所述孔口边沿的内侧表面的高度为0.1-1.2mm；和/或，所述凸起为多个并沿着所述孔口边沿的周向方向间隔布置。
第三方面，本发明提供一种呼吸管组件，该呼吸管组件结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。
为此，本发明提供的一种呼吸管组件包括呼吸管和安全阀片，所述呼吸管的管壁上 形成有安全阀孔，所述安全阀片能够活动地设置在所述呼吸管内；所述安全阀片包括能够覆盖住所述安全阀孔的覆盖状态和能够打开所述安全阀孔的打开状态；其中，在所述覆盖状态，所述安全阀片和所述安全阀孔的孔口边沿之间具有排气缝隙。在该技术方案中，由于在覆盖状态，安全阀片和安全阀孔的孔口边沿之间具有排气缝隙，这样，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于安全阀片和安全阀孔的孔口边沿之间具有排气缝隙，使用者呼出的废气将从排气缝隙排出，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。
进一步地，所述安全阀片为上述第一方面中任意所述的安全阀片，和/或，所述呼吸管为上述第二方面中任意所述的呼吸管。
第四方面，本发明提供一种呼吸管组件，该呼吸管组件结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。为此，本发明提供的一种呼吸管组件包括呼吸管和安全阀片，所述呼吸管的管壁上形成有多个间隔布置的排气孔，所述安全阀片能够活动地设置在所述呼吸管内；所述安全阀片包括能够覆盖住至少一部分所述排气孔的覆盖状态和能够打开被覆盖住的所述排气孔的打开状态。在该技术方案中，由于安全阀片在覆盖状态时覆盖一部分排气孔，这样，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住一部分排气孔，此时，使用者呼出的废气将从未被安全阀片覆盖的其他排气孔中排出，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。
进一步地，所述排气孔为圆孔或条形孔。
第五方面，本发明提供一种呼吸管组件，该呼吸管组件结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。
为此，本发明提供的一种呼吸管组件包括呼吸管和安全阀片，所述呼吸管的管壁上形成有安全阀孔和多个围绕所述安全阀孔间隔布置的排气孔，所述安全阀片能够活动地设置在所述呼吸管内；所述安全阀片包括能够覆盖住所述安全阀孔的覆盖状态和能够打开所述安全阀孔的打开状态。在该技术方案中，由于多个排气孔围绕安全阀孔间隔布置，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，使用者呼出的废气将从围绕安全阀孔的多个排气孔中排出，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。
进一步地，所述排气孔为圆孔或条形孔；和/或，在所述覆盖状态时所述安全阀片的外侧表面和所述安全阀孔的孔口边沿之间形成有排气缝隙。
第六方面，本发明提供一种安全阀片，该安全阀片结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。为此，本发明提供的一种安全阀片用于设置在呼吸面罩的具有安全阀孔的呼吸管内，所述安全阀片包括用于能够覆盖住安全阀孔的片本体，所述片本体上形成有多个间隔布置的排气孔。在该技术方案中，由于片本体上形成有多个间隔布置的排气孔，这样，该安全阀片应用到呼吸面罩的呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，使用者呼出的废气将从片本体上的多个排气孔排出，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，从而使得呼吸面罩结构简单，降低了成本。进一步地，所述片本体为柔性体。
第七方面，本发明提供一种呼吸管组件，该呼吸管组件包括呼吸管和以上第六方面中任意所述的安全阀片，所述呼吸管的管壁上形成有安全阀孔，所述安全阀片能够活动地设置在所述呼吸管内；所述安全阀片包括能够覆盖住所述安全阀孔的覆盖状态和能够打开所述安全阀孔的打开状态。如上所述的，该呼吸管组件结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。
进一步地，在所述覆盖状态时所述安全阀片的外侧表面和所述安全阀孔的孔口边沿之间形成有排气缝隙。
第八方面，本发明提供一种呼吸面罩，包括气腔罩和呼吸管组件，所述呼吸管组件为上述第三方面中任意所述的呼吸管组件；或者，所述呼吸管组件为上述第四方面中任意所述的呼吸管组件；或者，所述呼吸管组件为上述第五方面中任意所述的呼吸管组件；或者，所述呼吸管组件为上述第七方面中任意所述的呼吸管组件；其中，所述呼吸管的一端与所述气腔罩连接。这样，如上所述的，该呼吸面罩结构简单，能够有效地降低排气噪声。
附图说明
图1是根据本发明具体实施方式提供的第一种安全阀片的主视结构示意图；
图2是图1中的A-A线剖视图；
图3是图2中的圆圈部分的放大结构示意图；
图4是根据本发明具体实施方式提供的第一种呼吸管组件的结构示意图，显示了图1中所示的安全阀片；
图5是图4中的B-B线剖视图，其中，安全阀片处于覆盖状态；
图6是图5中的圆圈部分的放大结构示意图；
图7是图5中的安全阀片处于打开状态的示意图；
图8是根据本发明具体实施方式提供的第二种呼吸管组件的剖视结构示意图，其中，安全阀片处于打开状态；
图9是图8中圆圈部分的局部结构放大图；
图10是图8中的L-L线的剖视图；
图11是根据本发明具体实施方式提供的第三种呼吸管组件的结构示意图；
图12是图11中的C-C线剖视图，其中，安全阀片处于覆盖状态；
图13是图12中的安全阀片处于打开状态的示意图；
图14是根据本发明具体实施方式提供的第四种呼吸管组件的结构示意图；
图15是图14中的G-G线剖视图，其中，安全阀片处于覆盖状态；
图16是图15中的安全阀片处于打开状态的示意图；
图17是根据本发明具体实施方式提供的第五种呼吸管组件的结构示意图；
图18是图17中的E-E线剖视图，其中，安全阀片处于覆盖状态；
图19是图18中的安全阀片处于打开状态的示意图；
图20是根据本发明具体实施方式提供的第六种呼吸管组件的结构示意图；
图21是图20中的I-I线剖视图，其中，安全阀片处于覆盖状态；
图22是图21中的安全阀片处于打开状态的示意图；
图23是根据本发明具体实施方式提供的第二种安全阀片的结构示意图；
图24是根据本发明具体实施方式提供的第七种呼吸管组件的剖视结构示意图，其中，安全阀片处于覆盖状态，并显示了图23中所示的安全阀片；
图25是图24中的圆圈部分的放大图；
图26是图24中的安全阀片处于打开状态的示意图；
图27是根据本发明具体实施方式提供的一种呼吸面罩的结构示意图。
附图标记说明
1-安全阀片，2-呼吸面罩，3-安全阀孔，4-呼吸管，5-片本体，6-外侧表面，7-凸起，8-孔口边沿，9-排气缝隙，10-气腔罩，11-排气孔，12-呼吸管组件，13-额垫，14-衬垫，15-面罩框架。
具体实施方式
需要说明的是，在不冲突的情况下，本发明中的实施方式及实施方式中的特征可以相互组合。下面将参考附图并结合实施方式来详细说明本发明。
第一方面，参考图1、图2和图3，本发明提供的第一种安全阀片1用于设置在呼吸面罩2的具有安全阀孔3的呼吸管4内，如图5-图7所示的，安全阀片包括片本体5，片本体5包括用于能够覆盖住安全阀孔3的外侧表面6，其中，外侧表面6上形成有凸起7，凸起7用于在片本体5覆盖住安全阀孔3时与安全阀孔3的孔口边沿8的内侧表面接触以在外侧表面6和孔口边沿8之间形成排气缝隙9。在该技术方案中，由于安全阀片的片本体的外侧表面上形成有凸起，这样，该安全阀片应用到呼吸面罩的呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于凸起与安全阀孔的孔口边沿的内侧表面接触，这样就在安全阀片的外侧表面和孔口边沿之间形成排气缝隙，使用者呼出的废气将从排气缝隙排出，实现小流量排气，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。
另外，如图1和图2所示，安全阀片1包括连接在片本体5上的连接卡块，该连接卡块通过过渡连接片与片本体5连接，其中，过渡连接片的厚度小于片本体5和连接卡块，这样，连接卡块可以卡装在呼吸管的管壁上的位于安全阀孔的下方的卡口中，参考图5所示，从而可以将片本体5连接在呼吸管4内。当然，应当理解的是，安全阀片1和呼吸管4的连接方式并不限于此，例如，片本体5的一端形成有翻边，该翻边可以粘接于呼吸管4的内表面上或通过螺钉等紧固件连接在呼吸管4的内表面上。
一种实施例中，片本体5可以为硬性材料制造的硬性体，此时，前面所述的过渡连接片可以具有弹性，这样，在没有受到来自例如呼吸机的气压作用时，片本体5可以从覆盖安全阀孔的覆盖状态自动弹性回位到打开安全阀孔的打开状态，例如从图5所示的状态转换到图7所示的状态。
另一种实施例中，片本体5为柔性体，例如，前面提到的连接卡块和过渡连接片与片本体5一体形成为柔性体，例如，柔性体可以采用柔软材质比如硅胶制成，或者柔性体为表层覆盖有软橡胶的柔性弹片。这样，柔性体例如柔软的硅胶材质或者柔性弹片的软橡胶表层可以减缓气流振动，进一步降低了排气噪音。
另外，在该安全阀片1中，凸起7的形状可以是点球状、矩形台或圆形台等任何形状。另外，凸起7可以为1个或者为多个并间隔布置，例如多个凸起7以点阵、线型、发散或环形等其他任何分布形式分布在片本体的外侧表面6上。外侧表面6可以理解为： 安全阀片1被来自例如呼吸机的气流推起后与呼吸管例如弯管的内表面接触的侧面。
另外，凸起7相对于外侧表面6的高度为0.1-1.2mm，这样，可以使得排气缝隙9在满足排气的同时尽可能地小，以更进一步降低排气噪声。优选地，凸起7相对于外侧表面6的高度为0.2mm-0.8mm。更优选地，凸起7相对于外侧表面6的高度为0.5mm。当然，应当理解的是，凸起7相对于外侧表面6的高度并不限于此，如果需要，还可以为其他任何数值，本申请在此就不再一一列举。
第二方面，参考图8，图9和图10，本发明提供的呼吸管4用于连接于呼吸面罩2的气腔罩10，如图27所示的，呼吸管4的管壁上形成有安全阀孔3，其中，安全阀孔3的孔口边沿8的内侧表面上形成有凸起7，凸起7用于当安全阀片在呼吸管内部覆盖住安全阀孔3时与安全阀片1的外侧表面6接触以在外侧表面6和孔口边沿8之间形成排气缝隙9。在该技术方案中，由于安全阀孔的孔口边沿的内侧表面上形成有凸起，这样，安全阀片设置在呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于凸起与安全阀片的外侧表面接触，这样就在安全阀片的外侧表面和孔口边沿之间形成排气缝隙，使用者呼出的废气将从排气缝隙排出，实现小流量排气，降低了排气噪声，因此，该呼吸管结构简单、在应用到呼吸面罩上后能够有效地降低排气噪音。另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。
另外，凸起7相对于孔口边沿8的内侧表面的高度为0.1-1.2mm，这样，可以使得排气缝隙9在满足排气的同时尽可能地小，以更进一步降低排气噪声。优选地，凸起7相对于孔口边沿8的内侧表面的高度为0.2mm-0.8mm。更优选地，凸起7相对于孔口边沿8的内侧表面的高度为0.5mm。当然，应当理解的是，凸起7相对于孔口边沿8的内侧表面的高度并不限于此，如果需要，还可以为其他任何数值，本申请在此就不再一一列举。
另外，在该呼吸管4中，凸起7的形状可以是点球状、矩形台或圆形台等任何形状。另外，凸起7可以为1个或者为多个并沿着孔口边沿的周向方向间隔布置，例如多个凸起7以点阵、线型、发散或环形等其他任何分布形式沿着孔口边沿的周向方向间隔布置。
另外，呼吸管4可以为弯管，或者为直管，或者为其他曲线弯曲的管，具体根据实际需求可以选择。
第三方面，本发明提供一种呼吸管组件，参考图5和图7以及图8，该呼吸管组件包括呼吸管4和安全阀片1，呼吸管4的管壁上形成有安全阀孔3，安全阀片1能够活动地 设置在呼吸管4内；安全阀片1包括能够覆盖住安全阀孔3的覆盖状态和能够打开安全阀孔3的打开状态；其中，在覆盖状态，安全阀片1和安全阀孔3的孔口边沿之间具有排气缝隙9。在该技术方案中，由于在覆盖状态，安全阀片和安全阀孔的孔口边沿之间具有排气缝隙，这样，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，由于安全阀片和安全阀孔的孔口边沿之间具有排气缝隙，使用者呼出的废气将从排气缝隙排出，实现小流量排气，降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。
在此需要说明的是，第三方面的呼吸管组件中，可以通过多种方式来形成排气缝隙9，例如，一种方式中，安全阀片1和呼吸管4的管壁之间通过连接结构连接，安全阀片1在来自例如呼吸机的气体压力作用下朝向安全阀孔3转动以在快要覆盖安全阀孔3时，该连接结构将阻挡安全阀片1继续转动，从而在安全阀片1和安全阀孔3的孔口边沿之间形成排气缝隙9。或者，另一种方式中，安全阀片1为上述第一方面中任意所述的安全阀片(例如图5-7所示的一种结构)，和/或，呼吸管4为上述第二方面中任意所述的呼吸管(例如图8-10所示的一种结构)。这样，该呼吸管组件的呼吸管4的一端与呼吸面罩2的气腔罩10连接，呼吸管4的另一端与压力支撑设备例如呼吸机连接后，例如在呼吸机正常工作时，分为吸气和呼气两种状态。使用者(患者)吸气状态下，来自呼吸机的气压将安全阀片推起并覆盖安全阀孔。由于排气缝隙的存在，如图5中的实线箭头所示，来自呼吸机的气流，大部分输送给患者，小部分经排气缝隙排出。使用者(患者)呼气状态下，来自呼吸机的气压将安全阀片推起并覆盖安全阀孔，此时，来自呼吸机的气流和患者呼出的废气，经排气缝隙排出，如图5中的虚线箭头所示。另外，例如在呼吸机单一故障或呼吸机管道堵塞时，安全阀片可以从覆盖状态转换到打开状态，例如安全阀片在自身弹力下恢复到打开状态(伸展状态)，如图7或图8所示的，以打开安全阀孔，这样，患者可通过安全阀孔进行呼吸(如图7中的实线箭头所示)，以防止窒息。
第四方面，本发明提供一种呼吸管组件，参考图11-图16所示的结构，该呼吸管组件包括呼吸管4和安全阀片1，呼吸管4的管壁上形成有多个间隔布置的排气孔11，安全阀片1能够活动地设置在呼吸管4内；安全阀片1包括能够覆盖住至少一部分排气孔11的覆盖状态和能够打开被覆盖住的排气孔11的打开状态。在该技术方案中，由于安全阀片在覆盖状态时覆盖一部分排气孔，这样，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住一部分排气孔，此时， 使用者呼出的废气将从未被安全阀片覆盖的其他排气孔中排出，实现小流量排气，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。
在此需要理解的是，在该呼吸管组件中，排气孔11可以具有多种形状并具有多种布置方式，例如，如图11-13所示的，排气孔11为圆孔，并多行多列布置，或者成环形布置。进一步地，排气孔11为小孔。或者，如图14-16所示的，排气孔11为条形孔，并多行布置。当然，排气孔11的形状和布置方式并不限于此。另外，参考图12所示的，在呼吸管4的从内向外的方向上，排气孔11的孔径逐渐变大以形成渐扩孔，这样，可以减缓排气的流速，进一步减低排气噪声。这样，在图12中，吸气时，如图12中的实线箭头所示，例如来自呼吸机的气流，大部分输送给患者，小部分从未被安全阀片覆盖的其他排气孔中排出。呼气时，如图12中的虚线箭头所示，例如来自呼吸机的气流和患者呼出的废气，从未被安全阀片覆盖的其他排气孔中排出。另外，在图13中，例如在呼吸机单一故障或呼吸机管道堵塞时，安全阀片可以从覆盖状态转换到打开状态，例如安全阀片在自身弹力下恢复到打开状态(伸展状态)，以打开全部的排气孔，这样，患者可通过全部的排气孔进行呼吸(如图13中的实线箭头所示)，以防止窒息。
第五方面，本发明提供一种呼吸管组件，参考图17-22，该呼吸管组件包括呼吸管4和安全阀片1，呼吸管4的管壁上形成有安全阀孔3和多个围绕安全阀孔3间隔布置的排气孔11，安全阀片1能够活动地设置在呼吸管4内；安全阀片1包括能够覆盖住安全阀孔3的覆盖状态和能够打开安全阀孔3的打开状态。在该技术方案中，由于多个排气孔围绕安全阀孔间隔布置，该呼吸管连接在呼吸面罩的气腔罩后，在使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，使用者呼出的废气将从围绕安全阀孔的多个排气孔中排出，实现小流量排气，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。例如在呼吸机单一故障或呼吸机管道堵塞时，安全阀片可以从覆盖状态转换到打开状态，例如安全阀片在自身弹力下恢复到打开状态(伸展状态)，以打开全部的排气孔，这样，患者可通过全部的排气孔和安全阀孔进行呼吸(如图19和22所示)，以防止窒息。
呼吸管4的管壁上形成的安全阀孔3和多个围绕安全阀孔3间隔布置的排气孔11可以由同一模具行位生成，从而降低了生产成本。
在此需要理解的是，在该呼吸管组件中，排气孔11可以具有多种形状并具有多种布置方式，例如，如图17-19所示的，排气孔11为圆孔。进一步地，排气孔11为小孔。或者，如图20-22所示的，排气孔11为条形孔。当然，排气孔11的形状并不限于此，并且多个排气孔11的布置方式并不限于图17和图20中所示的方式。
另外，参考图18所示的，在呼吸管4的从内向外的方向上，排气孔11的孔径逐渐变大以形成渐扩孔，这样，可以减缓排气的流速，进一步减低排气噪声。另外，在覆盖状态时安全阀片1的外侧表面6和安全阀孔3的孔口边沿8之间形成有排气缝隙9。这样，如上所述的，排气还可以通过排气缝隙9排出。排气缝隙9例如可以通过上述的凸起来在外侧表面6和安全阀孔3的孔口边沿8之间形成。
第六方面，本发明提供一种安全阀片，参考图23，安全阀片1用于设置在呼吸面罩2的具有安全阀孔3的呼吸管4内，安全阀片包括用于能够覆盖住安全阀孔3的片本体5，片本体5上形成有多个间隔布置的排气孔11。在该技术方案中，由于片本体上形成有多个间隔布置的排气孔，这样，该安全阀片应用到呼吸面罩的呼吸管内后，使用者通过呼吸面罩正常吸气呼气的过程中，安全阀片将覆盖住安全阀孔，此时，使用者呼出的废气将从片本体上的多个排气孔排出，实现小流量排气，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。
一种实施例中，片本体5可以为硬性材料制造的硬性体，此时，前面所述的过渡连接片可以具有弹性，这样，在没有受到来自例如呼吸机的气压作用时，片本体5可以从覆盖安全阀孔的覆盖状态自动弹性回位到打开安全阀孔的打开状态，例如从图5所示的状态转换到图7所示的状态。
另一种实施例中，片本体5为柔性体，例如，前面提到的连接卡块和过渡连接片与片本体5一体形成为柔性体，例如，柔性体可以采用柔软材质比如硅胶制成，或者柔性体为表层覆盖有软橡胶的柔性弹片。这样，柔性体例如柔软的硅胶材质或者柔性弹片的软橡胶表层可以减缓气流振动，进一步降低了排气噪音。
另外，片本体5上形成的多个间隔布置的排气孔11可以具有任何形状，例如圆孔或条形缝隙，并具有多种布置方式。
第七方面，本发明提供一种呼吸管组件，该呼吸管组件包括呼吸管4和以上第六方面中任意所述的安全阀片1，呼吸管4的管壁上形成有安全阀孔3，安全阀片1能够活动地设置在呼吸管4内；安全阀片1包括能够覆盖住安全阀孔3的覆盖状态和能够打开安 全阀孔3的打开状态。这样，如上所述的，使用者呼出的废气将从片本体上的多个排气孔排出，实现小流量排气，从而降低了排气噪声，另外，无需在呼吸面罩的呼吸管上再设置额外的排气结构，使得呼吸管结构简单，并使得制作该呼吸管的塑胶模具结构简单，从而减低工业成本，进一步使得呼吸面罩结构简单，降低了成本。例如在呼吸机单一故障或呼吸机管道堵塞时，安全阀片可以从覆盖状态转换到打开状态，例如安全阀片在自身弹力下恢复到打开状态(伸展状态)，以打开全部的排气孔，这样，患者可通过安全阀孔进行呼吸(如图19和22所示)，以防止窒息。
进一步地，在覆盖状态时安全阀片1的外侧表面6和安全阀孔3的孔口边沿8之间形成有排气缝隙9。这样，如上所述的，排气还可以通过排气缝隙9排出。排气缝隙9例如可以通过上述的凸起在外侧表面6和安全阀孔3的孔口边沿8之间形成。
第八方面，参考图27，本发明提供一种呼吸面罩2，呼吸面罩2包括气腔罩10和呼吸管组件12，呼吸管组件12为上述第三方面中任意所述的呼吸管组件；或者，呼吸管组件12为上述第四方面中任意所述的呼吸管组件；或者，呼吸管组件12为上述第五方面中任意所述的呼吸管组件；或者，呼吸管组件12为上述第七方面中任意所述的呼吸管组件；其中，呼吸管4的一端与气腔罩10连接，呼吸管4的另一端用于与压力支持设备例如呼吸机连接。这样，如上所述的，该呼吸面罩结构简单，能够有效地降低排气噪声。
另外，如图27所示，呼吸面罩2包括面罩框架15，面罩框架15在使用时起到固定和连接头带的作用。呼吸管4例如弯管4呼吸机导管相连且在使用时可绕面罩框架15转动。面罩框架15上设置有额垫13和衬垫14。气腔罩10可以设置在面罩框架15上，或者，面罩框架15的一部分形成为气腔罩10。
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于此。在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型。包括各个具体技术特征以任何合适的方式进行组合。为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。但这些简单变型和组合同样应当视为本发明所公开的内容，均属于本发明的保护范围。

Claims (16)

  1. 一种安全阀片，所述安全阀片(1)用于设置在呼吸面罩(2)的具有安全阀孔(3)的呼吸管(4)内，其特征在于，所述安全阀片包括片本体(5)，所述片本体(5)包括用于能够覆盖住安全阀孔(3)的外侧表面(6)，其中，所述外侧表面(6)上形成有凸起(7)，所述凸起(7)用于在所述片本体(5)覆盖住安全阀孔(3)时与安全阀孔(3)的孔口边沿(8)的内侧表面接触以在所述外侧表面(6)和所述孔口边沿(8)之间形成排气缝隙(9)。
  2. 根据权利要求1所述的安全阀片，其特征在于，所述片本体(5)为柔性体。
  3. 根据权利要求1或2所述的安全阀片，其特征在于，所述凸起(7)相对于所述外侧表面(6)的高度为0.1-1.2mm；和/或，所述凸起为多个并且间隔布置。
  4. 一种呼吸管，所述呼吸管(4)用于连接于呼吸面罩(2)的气腔罩(10)，其特征在于，所述呼吸管(4)的管壁上形成有安全阀孔(3)，其中，所述安全阀孔(3)的孔口边沿(8)的内侧表面上形成有凸起(7)，所述凸起(7)用于当安全阀片在呼吸管内部覆盖住安全阀孔(3)时与安全阀片(1)的外侧表面(6)接触以在所述外侧表面(6)和所述孔口边沿(8)之间形成排气缝隙(9)。
  5. 根据权利要求4所述的呼吸管，其特征在于，所述凸起(7)相对于所述孔口边沿(8)的内侧表面的高度为0.1-1.2mm；和/或，所述凸起为多个并沿着所述孔口边沿的周向方向间隔布置。
  6. 一种呼吸管组件，其特征在于，包括呼吸管(4)和安全阀片(1)，所述呼吸管(4)的管壁上形成有安全阀孔(3)，所述安全阀片(1)能够活动地设置在所述呼吸管(4)内；所述安全阀片(1)包括能够覆盖住所述安全阀孔(3)的覆盖状态和能够打开所述安全阀孔(3)的打开状态；其中，在所述覆盖状态，所述安全阀片(1)和所述安全阀孔(3)的孔口边沿之间具有排气缝隙(9)。
  7. 根据权利要求6所述的呼吸管组件，其特征在于，所述安全阀片(1)为权利要求1-3中任意一项所述的安全阀片，和/或，所述呼吸管(4)为权利要求4或5所述的呼吸管。
  8. 一种呼吸管组件，其特征在于，包括呼吸管(4)和安全阀片(1)，所述呼吸管(4)的管壁上形成有多个间隔布置的排气孔(11)，所述安全阀片(1)能够活动地设置在所述呼吸管(4)内；所述安全阀片(1)包括能够覆盖住至少一部分所述排气孔(11)的覆盖状态和能够打开被覆盖住的所述排气孔(11)的打开状态。
  9. 根据权利要求8所述的呼吸管组件，其特征在于，所述排气孔(11)为圆孔或条 形孔。
  10. 一种呼吸管组件，其特征在于，包括呼吸管(4)和安全阀片(1)，所述呼吸管(4)的管壁上形成有安全阀孔(3)和多个围绕所述安全阀孔(3)间隔布置的排气孔(11)，所述安全阀片(1)能够活动地设置在所述呼吸管(4)内；所述安全阀片(1)包括能够覆盖住所述安全阀孔(3)的覆盖状态和能够打开所述安全阀孔(3)的打开状态。
  11. 根据权利要求10所述的呼吸管组件，其特征在于，所述排气孔(11)为圆孔或条形孔；和/或，在所述覆盖状态时所述安全阀片(1)的外侧表面(6)和所述安全阀孔(3)的孔口边沿(8)之间形成有排气缝隙(9)。
  12. 一种安全阀片，所述安全阀片(1)用于设置在呼吸面罩(2)的具有安全阀孔(3)的呼吸管(4)内，其特征在于，所述安全阀片包括用于能够覆盖住安全阀孔(3)的片本体(5)，所述片本体(5)上形成有多个间隔布置的排气孔(11)。
  13. 根据权利要求12所述的安全阀片，其特征在于，所述片本体(5)为柔性体。
  14. 一种呼吸管组件，其特征在于，包括呼吸管(4)和权利要求12或13所述的安全阀片(1)，所述呼吸管(4)的管壁上形成有安全阀孔(3)，所述安全阀片(1)能够活动地设置在所述呼吸管(4)内；所述安全阀片(1)包括能够覆盖住所述安全阀孔(3)的覆盖状态和能够打开所述安全阀孔(3)的打开状态。
  15. 根据权利要求14所述的呼吸管组件，其特征在于，在所述覆盖状态时所述安全阀片(1)的外侧表面(6)和所述安全阀孔(3)的孔口边沿(8)之间形成有排气缝隙(9)。
  16. 一种呼吸面罩，包括气腔罩(10)和呼吸管组件，其特征在于，所述呼吸管组件为权利要求6或7所述的呼吸管组件；或者，所述呼吸管组件为权利要求8或9所述的呼吸管组件；或者，所述呼吸管组件为权利要求10或11所述的呼吸管组件；或者，所述呼吸管组件为权利要求14或15所述的呼吸管组件；其中，所述呼吸管(4)的一端与所述气腔罩(10)连接。
PCT/CN2020/140021 2019-12-31 2020-12-28 安全阀片、呼吸管、呼吸管组件和呼吸面罩 WO2021136153A1 (zh)

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