WO2016124145A1 - 面罩 - Google Patents

面罩 Download PDF

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Publication number
WO2016124145A1
WO2016124145A1 PCT/CN2016/073476 CN2016073476W WO2016124145A1 WO 2016124145 A1 WO2016124145 A1 WO 2016124145A1 CN 2016073476 W CN2016073476 W CN 2016073476W WO 2016124145 A1 WO2016124145 A1 WO 2016124145A1
Authority
WO
WIPO (PCT)
Prior art keywords
opening
joint
housing
mask
buffer portion
Prior art date
Application number
PCT/CN2016/073476
Other languages
English (en)
French (fr)
Inventor
雷明初
樊中成
费诗超
Original Assignee
深圳瑞之谷医疗科技有限公司
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
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=53113844&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2016124145(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 深圳瑞之谷医疗科技有限公司 filed Critical 深圳瑞之谷医疗科技有限公司
Priority to EP16746140.9A priority Critical patent/EP3254721B1/en
Publication of WO2016124145A1 publication Critical patent/WO2016124145A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas 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
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0611—Means for improving the adaptation of the mask to the patient with a gusset portion
    • 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
    • A61M16/06—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
    • 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
    • A61M16/0683—Holding devices therefor
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen

Definitions

  • the present invention relates to a face mask, and more particularly to a medical respiratory mask for use with an air delivery system.
  • positive pressure ventilation is generally used, that is, positive pressure gas is delivered to the patient's respiratory airway through a respiratory device.
  • Such breathing apparatus usually includes a positive pressure ventilation device, ie, a continuous positive pressure ventilation device (CPAP, Continuous). Positive Airway Pressure) or bi-level positive airway (Bi-PAP, bilevel positive airway) Pressure), air delivery tube and patient breathing interface, wherein the patient breathing interface is generally a mask or a nasal mask.
  • the mask generally includes a joint, an elbow, an anti-asphyxia valve, a housing, a flexible cover, a strap, and a bracket that are coupled to the air delivery tube.
  • the joint, the anti-asphyxia valve, the elbow, the casing and the flexible cover are connected in sequence, and the bracket is fixed on the casing, and the two ends of the strap are buckled on the bracket.
  • the mask is fastened to the patient's mouth and nose by the strap, and the flexible cover contacts the skin of the patient's mouth and the contour area of the nose, and the skin of the flexible cover and the contact area under the pressure difference between the inside and outside of the strap and the mask.
  • the airtightness is formed to fit the positive pressure gas into the respiratory airway of the patient.
  • the comfort, stability and sealing effect of the mask and skin contact are three very important indicators, which will directly affect the patient experience and treatment effect.
  • a mask comprising:
  • An anti-asphyxia valve connected to the joint
  • the flexible cover disposed at an end of the housing away from the elbow, the flexible cover having a first opening and a second opening, the first opening facing the housing, the second opening Moving away from the housing, the flexible cover is formed with a flexible pad adjacent to an edge region of the second opening;
  • the flexible cover includes a nose contact area and a mouth contact area on the nose contact area
  • the recess is formed with a buffer structure, which is an elongated structure extending from the top end of the nose contact region to the mouth contact region on both sides, the buffer structure including a first buffer portion and a second buffer And a concave curved surface connecting the first buffer portion and the second buffer portion, the first buffer portion is adjacent to the first opening, and the second buffer portion is adjacent to the flexible pad, the inner portion
  • the concave curved surface is deformable to adjust a distance between the first buffer portion and the second buffer portion;
  • a bracket is disposed on the housing, and includes a joint portion, an arc beam extending from the joint portion toward one end, and a connecting end formed at an end of the arc beam away from the joint portion, the joint a connecting hole is formed on the upper portion, and a pulling portion is formed on the two sides of the connecting hole, and the connecting hole is detachably sleeved on the housing;
  • a strap for connecting the two holding portions and the connecting end of the bracket to assist in wearing the mask
  • the two pulling portions of the bracket are suspended from the wearer's face and the connecting end is suspended on the forehead so that the bracket does not face the skin of the face and forehead contact.
  • the flexible cover can be flexibly adapted to the nose of the wearer of different nose bridge heights
  • the contact area and without affecting the airtightness between the flexible cover and the skin of the wearer's face, significantly reduces the pressure formed by the flexible cover on the nose bridge portion of the patient during wearing, and avoids wearing the face after wearing for a long time.
  • the red part is formed to improve the wearing and versatility.
  • the connecting portion of the bracket is suspended on the face or the forehead, so that it does not come into contact with the human body, thereby avoiding the discomfort caused by wearing for a long time.
  • Figure 1 is a perspective view of a mask of an embodiment
  • Figure 2 is a perspective exploded view of the mask shown in Figure 1;
  • Figure 3 is a combination view of the joint, anti-asphyxia valve and elbow of the mask shown in Figure 1;
  • Figure 4 is a perspective exploded view of the joint, anti-asphyxia valve and elbow shown in Figure 3;
  • Figure 5 is a cross-sectional view of the joint, anti-asphyxia valve and elbow shown in Figure 3;
  • Figure 6 is a perspective view of the housing of the mask shown in Figure 1;
  • Figure 7 is a combination view of the housing and the flexible cover of the mask shown in Figure 1;
  • Figure 8 is a cross-sectional view of the housing and flexible cover of Figure 7;
  • Figure 9 is a perspective view of the flexible cover of the mask shown in Figure 1;
  • Figure 10 is a perspective view of another perspective view of the flexible cover of Figure 9;
  • Figure 11 is a cross-sectional view of the flexible cover of Figure 9;
  • Figure 12 is a perspective view of the bracket of the mask shown in Figure 1;
  • Figure 13 is a perspective view of another perspective view of the stent of Figure 12;
  • Figure 14 is a cross-sectional view of the stent of Figure 12;
  • Figure 15 is a combination view of the housing, flexible cover and bracket of the mask shown in Figure 1;
  • Figure 16 is a cross-sectional view of the bracket and the housing of Figure 15 taken along the line XVI-XVI;
  • Figure 17 is a cross-sectional view of the bracket and the housing of Figure 15 taken along the line XVII-XVII;
  • Figure 18 is a perspective view of the mask of Figure 1 when worn.
  • a mask 100 of an embodiment is a medical mask for positive pressure ventilation treatment, including a joint 10, an anti-asphyxia valve 15, a bend 20, a housing 30, and a flexible connection.
  • the joint 10 is for connection to an air delivery tube (not shown).
  • the anti-asphyxia valve 15 is rotatably coupled to the joint 10, and the elbow 20 is snapped onto the anti-asphyxia valve 15.
  • the housing 30 is detachably snapped onto the elbow 20, and the flexible cover 50 is formed on the housing 30 by overmolding and is used to contact the wearer's mouth and nose contours.
  • the bracket 80 is sleeved on the housing 30, and the two ends of the strap 90 are used for connecting the two sides of the bracket 80 to fix the mask 10 on the wearer's mouth and nose contact area.
  • the joint 10 is a hollow tubular member having an annular portion 11 formed inwardly around one inner circumference.
  • the anti-asphyxia valve 15 includes a valve body 151 and a valve piece 153.
  • the valve body 151 has an annular shape, and one end thereof is outwardly protruded from the periphery to form an engaging ring 1511, and the other end has two card holes 1513 formed on the outer side of the circumference, and an annular supporting surface 1515 is formed at the end.
  • the valve body 151 is further recessed to form a receiving hole 1517 at an inner side of one end of the support surface 1515.
  • the engaging ring 1511 is engaged with the annular portion 11 of the joint 10, and the valve body 151 is rotatably coupled to the joint 10 and is not detachable from the joint 10.
  • the valve piece 153 is made of a silicone material and includes a sealing portion 1531 and a shank portion 1533 formed on the periphery of the sealing portion 1531.
  • the sealing portion 1531 is a circular sheet having a uniform thickness and a thickness ranging from 0.2 to 0.8 mm.
  • the sealing portion 1531 is blocked from one end of the valve body 151.
  • the shank 1533 has a thickness larger than the sealing portion 1531 and is inserted into the receiving hole 1517 fixedly connected to the valve body 151.
  • the elbow 20 has a bent shape, and one end thereof is inserted into the anti-asphyxia valve 15 and attached to the support surface 1515.
  • the bent pipe 20 has two latching members 21 protruding outward from the periphery. The two latching members 21 are respectively inserted into the two card holes 1513 of the anti-asphyxia valve 15.
  • the inner wall of the elbow 20 is adjacent to the inner wall of the anti-asphyxia valve 15 to form a slanting surface 23 opposite to the axis of the elbow 20, and two anti-sufficient holes 231 are formed in the affixing surface 23, and the anti-suffocating hole 231 passes through the elbow 20 Side wall.
  • the end of the elbow 20 away from the joint 10 is symmetrically provided with a buckle 25 and a seal ring 27 is formed around the circumference around the end.
  • the front view of the housing 30 is approximately an isosceles triangle.
  • the front view of the housing 30 has a length of about 90 to 100 mm and a width of about 80 to 85 mm.
  • the elbow 20 is snapped onto the housing 30 and is rotatable relative to the housing 30.
  • the housing 30 includes a joint portion 31, a housing portion 33, and an interface portion 35 that are sequentially connected.
  • the size of the housing 30 gradually increases toward the interface portion 35 along the joint portion 33.
  • the joint portion 31 has an annular shape and is rotatably fitted to the end of the bent pipe 20.
  • An annular sealing surface 311 is formed at an end of the joint portion 31 away from the housing portion 33, and an inner peripheral edge of the joint portion 31 protrudes inward to form an annular engaging rib 313, and an outer peripheral edge of the joint portion 31 protrudes outward to form two Card position 315 and two buckle positions 317.
  • the sealing surface 311 of the joint portion 31 is in close contact with the seal ring 27 of the elbow 20, and the engaging rib 313 is engaged with the two snaps 25 from one side of the seal ring 27.
  • the seal ring 27 of the elbow 20 ensures an effective seal of the housing 30 as it rotates relative to the elbow 20.
  • the two latching positions 315 of the housing 30 are symmetrically disposed, and the two latching positions 317 are symmetrically disposed, and the connecting lines of the two latching positions 315 are perpendicular to the connecting lines of the two latching positions 317.
  • the cross-sectional profile of the casing portion 33 is triangular, and the cross-sectional dimension of the casing portion 33 gradually increases from the joint portion 31 toward the joint portion 35.
  • the housing portion 33 is divided into a first housing region 331 at the upper portion and a second housing region 333 at the lower portion, wherein the first housing region 331 constitutes the inside of the nose of the wearer.
  • the first housing region 331 is provided with an oxygen tube interface 3311 near the second housing region 333 for connecting the oxygen tube in a special case, such as oxygenated ventilation therapy. Under normal circumstances, the interface 3311 needs to be sealed with a sealing plug 3313 to prevent air leakage.
  • a plurality of exhaust holes 3315 are defined in the first housing region 331 away from the second housing region 333.
  • the number of the exhaust holes 3315 is 25 to 30.
  • the vent hole 3315 is circular and has an inner diameter of about 0.6 to 0.9 mm.
  • the flexible cover 50 is ergonomically shaped to match the different mouth and nose contours of most patients.
  • the flexible cover 50 is made of a single layer of silicone and is non-detachably formed on the interface portion 35 of the housing 30.
  • the silicone material of the flexible cover 50 has a Shore hardness of about 40 degrees.
  • Both ends of the flexible cover 50 have a first opening 51 and a second opening 53, respectively.
  • the shape of the first opening 51 and the second opening 53 conforms to the front view of the mouth and nose of the wearer.
  • the first opening 51 faces the housing 30, and the second opening 53 is away from the housing 30 and faces the mouth and nose of the wearer.
  • the edge of the second opening 53 is formed with a flexible pad 532.
  • the flexible pad 532 When worn, the flexible pad 532 contacts the skin of the face along the contours of the wearer's bridge of the nose, cheeks, and lower lip/chin and forms an airtight.
  • the thickness of the flexible cover 50 gradually decreases from the first opening 51 to the second opening 53, and the thickness of the thinnest portion is about 0.4 mm.
  • the flexible cover 50 is recessed around the circumference of the first opening 51 to form a fitting groove 511.
  • the fitting groove 511 is formed on the end surface of the flexible cover 51 facing the housing 30 and tightly sleeved on the interface portion 35 of the housing 30, that is, the peripheral wall of the interface portion 35.
  • the flexible cover 50 is divided into a nose contact area 55 that contacts the wearer's nose and a mouth contact area 57 that contacts the mouth.
  • the nose contact region 55 is on the same side as the first housing region 331 of the housing portion 33.
  • the mouth contact region 57 is on the same side as the second housing region 333 of the housing portion 33.
  • a cushioning structure 58 is formed in the nose contact area 55.
  • the cushioning structure 58 is an elongated structure extending from the top end of the nose contact region 55 to the mouth contact region 57 on both sides.
  • the buffer structure 58 includes a first buffer portion 581, a second buffer portion 583, and a concave curved surface 585 that connects the first buffer portion 581 and the second buffer portion 583.
  • the first buffer portion 581 is adjacent to the first opening 51, and the second buffer portion 583 is adjacent to the flexible pad 532.
  • the first buffer portion 581, the second buffer portion 583, and the concave curved surface 585 are all symmetrically disposed with respect to the central axis of the cross section of the flexible casing 50.
  • the concave depth of the concave curved surface 585 gradually becomes shallower from the middle to the first buffer portion 581 and the second buffer portion 583, and gradually becomes shallower from the nose contact region 55 toward the mouth contact region 57.
  • the plane A see FIG.
  • the concave curved surface 585 has a concave depth of 10 to 13 mm and a cross-sectional profile having a radius of curvature ranging from 4 to 40 mm.
  • the thickness of the concave curved surface 585 is uniform, and the thickness thereof ranges from 0.4 to 1.5 mm.
  • the distance between the first buffer portion 581 and the second buffer portion 583 of the buffer structure 58 can be freely adjusted within a certain range as the concave curved surface 585 is compressed and restored.
  • the spacing between the first cushioning portion 581 and the second cushioning portion 583 of the cushioning structure 58 on the flexible casing 50 will be reduced to automatically match the nose contour of the nasal bridge patient, thereby Improve its adaptability.
  • the pressure formed by the flexible cover 50 on the nose bridge portion of the patient can be significantly reduced during the wearing, and the length is avoided. After the time is worn, a red mark is formed on the patient's face, which improves the wearing comfort.
  • the nose contact region 55 is provided with two thickened structural reinforcing ribs 551 adjacent to the cushioning structure 58, and two opening reinforcing ribs 553.
  • the two structural reinforcing ribs 551 are symmetrically disposed at a substantially central position inside the nose contact region 55.
  • the opening reinforcing ribs 553 are symmetrically disposed to each other, and are located at the corresponding structural reinforcing ribs 551 adjacent to the second opening 53.
  • Two thickened first reinforcing ribs 571 are formed at the inner side of the oral contact area 57 adjacent to the nasal contact area 55, and a second reinforcing rib 575 (see FIG. 11) is formed away from the nasal contact area 55.
  • the two first reinforcing ribs 571 are symmetrically disposed and adjacent to the structural reinforcing ribs 551 of the nose contact region 55, respectively.
  • the second reinforcing rib 575 is between the two first reinforcing ribs 571.
  • the thickness of the structural reinforcing rib 551 is about 2.5 to 3 mm
  • the thickness of the opening reinforcing rib 553 is about 1 mm
  • the thickness of the first reinforcing rib 571 is about 2.5 to 4 mm
  • the thickness of the second reinforcing rib 575 is about 2 to 3.5. Millimeter.
  • the flexible cover 50 and the housing 30 are integrally formed by an overmolding process to form a non-detachable smooth and seamless connection, which makes the product more beautiful and reliable.
  • the housings 30 of the masks 100 of different sizes can be shared, and different types of masks 100 can be formed by adjusting the size and contour of the flexible cover 50.
  • the side of the nose contact region 55 away from the housing portion 30 and the side of the mouth contact region 57 remote from the housing 30 together form a flexible pad surrounding the second opening 53.
  • the bracket 80 is sleeved on the housing 30 and includes a joint portion 81 , an arcuate beam 83 extending from the joint portion 81 toward one end, and a curved beam 83 extending away from the end of the joint portion 81 .
  • Connection end 85 A circular coupling hole 811 is defined in the middle of the joint portion 81 and a pulling portion 812 is formed on the two sides.
  • the coupling hole 811 is detachably sleeved on the housing 30.
  • Two latching holes 812 are formed in the two sides of the engaging portion 811 at the side of the engaging portion 811, and two latching holes 815 are formed corresponding to the curved beam 83.
  • connection of the two card holes 813 is perpendicular to the line connecting the two card slots 815.
  • the two latching positions 315 and the two latching positions 317 of the housing 30 are respectively inserted into the two latching slots 815 and the two latching holes 813 .
  • Two holding portions 812 are suspended at the face of the human body, and a connecting hole 8121 is opened therein.
  • the connecting hole 8121 is substantially square and has a length ranging from 18 to 20 mm and a width of about 4 mm.
  • An opening 8123 that communicates with the connecting hole 8121 is formed in one of the pulling portions 812 of the bracket 80.
  • the opening 8123 is formed on a side of the pulling portion 812 adjacent to the curved beam 83.
  • the opening 8123 is convenient for the patient to manually remove the strap 90 from the corresponding connecting hole 8121, or fit into the corresponding connecting hole 8121, and the wearing and dismounting of the mask 100 can be easily performed without completely or partially unfastening the strap 90. To improve the convenience of patient use. It can be understood that the holding portion 812 may not be provided with the opening 8123.
  • the curved beam 83 has an arch shape as a whole, and is bent and extended along one side along the joint portion 81, and then bent and extended to the opposite side to have a flat "S" shape as a whole.
  • the longitudinal direction of the curved beam 83 is parallel to the center of the first housing region 331 of the housing portion 33 and the second housing region 333, and is perpendicular to the center of the two holding portions 812.
  • the curved beam 83 is further provided with an opening 831 adjacent to the joint portion 81.
  • the opening 831 is disposed corresponding to the region of the exhaust hole 3315 of the casing to communicate the air hole 3315 with the outside.
  • the connecting end 85 is suspended on the forehead of the person, and the curved beam 83 can be elastically bent toward the side of the casing 30 under the pulling of the strap 90.
  • Two connecting holes 851 are juxtaposed on the connecting end 85.
  • the connecting hole 851 of the connecting end 85 is substantially a strip-shaped hole having a width of about 3 to 4 mm and a length of about 18 to 20 mm.
  • the connecting end 85 of the bracket 80 is not in contact with the forehead of the person, and thus the bracket 80 is a non-contact bracket, that is, a three-point suspension bracket.
  • the strap 90 includes a main body portion 91 surrounding the rear side of the head, and two first connecting straps 93 and two second connecting straps 95 formed on the main body portion 91.
  • the two first connecting strips 93 are spaced apart from the two second connecting strips 95.
  • Each of the first connecting strips 93 is formed with a fastening portion 931 adjacent to the end portion, and a fastening member 933 is disposed on the end portion.
  • the fastener 933 passes through the connecting hole 851 of the bracket 80 and is folded back and fastened to the fastening portion 931.
  • the fastening portion 931 is a loop fabric formed on the outer surface of the first connecting belt 93.
  • the structure of the two second connecting strips 95 is similar to the structure of the two first connecting strips 93.
  • the two second connecting strips 95 are respectively disposed in the two connecting holes 8121 connected to the bracket 80. It will be appreciated that the strap 90 can be separated from the bracket 80 when not worn.
  • the anti-asphyxia valve 15 is snapped onto the joint 10
  • the elbow 20 is snapped onto the anti-asphyxia valve 15.
  • the housing 30 is detachably fastened to the elbow 30 to connect the flexible casing 50 to the elbow 30.
  • the bracket 80 is snapped onto the housing 30.
  • the strap 90 is attached to the bracket 80.
  • the main body portion 91 of the strap 90 surrounds the rear side of the wearer's head, and the fasteners 933 of the two first connecting straps 93 pass through the corresponding connecting holes 851 of the bracket 80 and are stuck to the cover.
  • two second connecting straps 95 are connected to the two connecting holes 8121 of the bracket 80, thereby fixing the mask 100 to the mouth and nose contact area of the wearer, and adjusting the second opening of the flexible cover 50. 53, making it correspond to the nose contact area that houses the wearer. Connect the joint 10 to the air delivery tube.
  • the sealing portion 1531 of the anti-asphyxia valve 15 can be elastically bent relative to the shank 1533 and attached to the bent pipe.
  • the face 23 is closed to close the anti-suffocation hole 231 to prevent the airflow from escaping the bend 20 through the anti-suffocation hole 231.
  • the bracket 80 adopts a special curvature design, the connecting end 85 of the bracket 80 does not contact the forehead portion of the patient when worn, that is, the conventional forehead structure is not used, and the uncomfortable feeling can be avoided by wearing for a long time.
  • the distance between the connecting end 85 of the bracket 80 and the wearer's forehead can be adjusted only by adjusting the wearing strength of the two first connecting strips 93 and the two second connecting strips 95 of the strap 90, thereby adjusting the wearing of the mask 100. Angle and tightness.
  • the housings 30 of the masks 100 of different sizes are common, the masks 100 of the large, medium and small are formed only by adjusting the size and contour of the flexible cover 50. Therefore, the three large, medium and small masks 100 can share the injection mold of the housing 30, which can save the mold cost. Moreover, since the three masks 100 are generally used for one housing 30, the three large, medium and small masks 100 can also share the bracket 80 matched with the housing 30, which can save the cost of the design and manufacture of the bracket 80.
  • the buffer structure 58 on the flexible cover 50 can adjust the spacing between the first buffer portion 581 and the second buffer portion 583 according to the contour of the wearer's nose to match the nose contours of different users, and thus the mask 100 can be Improve wearing comfort and sealing performance while meeting the fit.
  • the curved beam 83 at both ends of the bracket 80 can be elastically bent toward one side of the housing 30 to buffer and balance the tension of the strap 90.
  • the structural reinforcing rib 551, the opening reinforcing rib 553, the first reinforcing rib 571 and the second reinforcing rib 575 on the inner side of the flexible casing 50 enhance the structural stability of the flexible casing 50, preventing the flexible casing 10 from being exposed to the skin of the patient's nose.
  • bracket 80 when the bracket 80 can be firmly engaged with the housing 30, the number and position of the latch 315 and the buckle 317 on the housing 30 can be designed as needed, and at the same time, the slot 815 of the bracket 80 and the two card holes The number and position of the 813 need to be designed accordingly.

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

Abstract

一种面罩，包括：接头（10）、防窒息阀（15）、弯管（20）、壳体（30）、柔性罩壳（50）、支架（80）以及绑带（90）。所述弯管（20）通过所述防窒息阀（15）连接于所述接头（10）上，所述壳体（30）连接于所述弯管（20）上。所述柔性罩壳（50）设于所述壳体（30）远离所述弯管（20）的一端。所述支架（80）可拆卸地套设于所述壳体（30）上。所述支架（80）包括结合部（81）及由所述结合部（81）向外延伸的弧形梁（83），以及形成于所述弧形梁（83）端部的连接端（85），所述结合部（81）的两侧还分别向外延伸形成有两个拉持部（812）。所述绑带（90）用于连接所述支架（80）的两个拉持部（812）及连接端（85）以协助佩戴所述面罩。

Description

面罩
【技术领域】
本发明涉及一种面罩，尤其是涉及一种与空气输送系统配合使用的医疗用呼吸面罩。
【背景技术】
在针对阻塞性睡眠呼吸暂停等睡眠呼吸类疾病的治疗过程中，一般采用正压通气疗法，即通过呼吸设备将正压气体输送至患者呼吸气道内。这种呼吸设备通常包括正压通气装置即持续正压通气装置(CPAP，Continuous Positive Airway Pressure)或双水平正压通气装置(Bi-PAP，bilevel positive airway pressure)、空气输送管以及患者呼吸接口，其中患者呼吸接口一般为面罩或者口鼻罩。面罩一般包括与空气输送管连接的接头、弯管、防窒息阀、壳体、柔性罩壳、绑带以及支架。接头、防窒息阀、弯管、壳体以及柔性罩壳依次连接，支架固定于壳体上，绑带两端卡扣于支架上。使用时，面罩被绑带固定在患者口、鼻部上，柔性罩壳接触患者口、鼻部外围轮廓区域的皮肤，在绑带及面罩内外压差的作用下柔性罩壳与接触区域的皮肤之间贴合形成气密，使正压气体输送至患者呼吸气道内。在使用过程中，面罩和皮肤接触的舒适度、稳定度、密封效果是三个非常重要的指标，将直接影响患者使用体验和治疗效果。
常用的面罩与人的口、鼻部位接触，长时间佩戴会导致舒适性降低。而且，现有面罩的柔性罩壳不能较佳地匹配大多数患者的鼻部轮廓，例如同一款面罩不能同时满足不同年龄段的低鼻梁患者和高鼻梁患者的使用需求，其通用性较差。
【发明内容】
基于此，有必要提供一种通用性较好且能够提高佩戴舒适性的面罩。
一种面罩，包括：
接头；
防窒息阀，连接于所述接头上；
弯管，连接于所述防窒息阀上；
壳体，连接于所述弯管上；
柔性罩壳，设于所述壳体远离所述弯管的一端，所述柔性罩壳上开设有第一开口与第二开口，所述第一开口朝向所述壳体，所述第二开口远离所述壳体，所述柔性罩壳在邻近所述第二开口的边缘区域形成有柔性衬垫；所述柔性罩壳包括鼻部接触区及口部接触区，所述鼻部接触区上凹设形成有缓冲结构，所述缓冲结构为从所述鼻部接触区的顶端沿两侧向所述口部接触区延伸的狭长状结构，所述缓冲结构包括第一缓冲部、第二缓冲部以及连接所述第一缓冲部和所述第二缓冲部的内凹曲面，所述第一缓冲部邻近所述第一开口，所述第二缓冲部邻近所述柔性衬垫，所述内凹曲面可变形以调整所述第一缓冲部与所述第二缓冲部之间的距离；
支架，卡设于所述壳体上，其包括结合部、由所述结合部朝一端延伸的弧形梁，以及形成于所述弧形梁远离所述结合部一端的连接端，所述结合部上开设有结合孔并于所述结合孔两侧分别向外延伸形成有拉持部，所述结合孔可拆卸地套设于所述壳体上；以及
绑带，用于连接所述支架的两个拉持部及连接端以协助佩戴所述面罩，
其中，所述面罩于佩戴时，所述支架的两个拉持部悬置于佩戴者脸部位且所述连接端悬置于额头部位，以使所述支架不与脸部及额头的皮肤接触。
由于所述缓冲结构处的内凹曲面可变形，以调整所述第一缓冲部与所述第二缓冲部之间的距离，从而使得柔性罩壳可以柔性适配不同鼻梁高度的佩戴者的鼻部接触区，且在不影响柔性罩壳与佩戴者脸部皮肤之间气密性的前提下，明显降低佩戴时柔性罩壳对患者鼻梁部位形成的压力，避免长时间佩戴后在佩戴者脸部形成红印，提高了佩戴通用性及舒适性。而且，支架的连接部悬置于人脸或者额头上，因而其并不与人体接触，避免造成长时间佩戴的不适感。
【附图说明】
通过对附图中所示的本发明的优选实施例的更具体说明，本发明的上述及其它目的、特征和优势将变得更加清晰。在全部附图中相同的附图标记指示相同的部分，且并未刻意按实际尺寸等比例缩放绘制附图，重点在于示出本发明的主旨。
图1为一实施例的面罩的立体示意图；
图2为图1所示面罩的立体分解示意图；
图3为图1所示面罩的接头、防窒息阀及弯管的组合图；
图4为图3所示接头、防窒息阀及弯管的立体分解示意图；
图5为图3所示接头、防窒息阀及弯管的剖视图；
图6为图1所示面罩的壳体的立体示意图；
图7为图1所示面罩的壳体及柔性罩壳的组合图；
图8为图7所示壳体及柔性罩壳的剖视图；
图9为图1所示面罩的柔性罩壳的立体示意图；
图10为图9所示柔性罩壳的另一视角的立体示意图；
图11为图9所示柔性罩壳的剖视图；
图12为图1所示面罩的支架的立体示意图；
图13为图12所示支架的另一视角的立体示意图；
图14为图12所示支架的剖视图；
图15为图1所示面罩的壳体、柔性罩壳及支架的组合图；
图16为图15所示支架及壳体沿XVI-XVI线的剖视图；
图17为图15所示支架及壳体沿XVII-XVII线的剖视图；
图18为图1所示面罩佩戴时的立体示意图。
【具体实施方式】
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的首选实施例。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容更加透彻全面。
需要说明的是，当元件被称为“固设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1及图2，一实施例的面罩100为一种用于正压通气治疗的医疗用面罩，其包括依次连通的接头10、防窒息阀15、弯管20、壳体30及柔性罩壳50、套设于壳体30上的支架80以及连接于支架80上的绑带90（请参阅图18）。接头10用于与一空气输送管连接(图未示)。防窒息阀15转动连接于接头10上，弯管20卡扣于防窒息阀15上。壳体30可拆卸地卡扣于弯管20上，柔性罩壳50通过二次注塑加工成型于壳体30上，且用于与佩戴者的口、鼻部轮廓外围接触。支架80套设于壳体30上，绑带90两端用于连接支架80的两侧，以将面罩10固定罩设于佩戴者的口、鼻部接触区。
请一并参阅图3至图5，接头10为中空管状部件，其一端环绕内侧周缘向内形成环状部11。防窒息阀15包括阀体151及阀片153。阀体151为圆环状，其一端环绕周缘向外凸设形成卡合环1511，另一端于周缘外侧上开设两个卡孔1513，并于端部形成环形支撑面1515。阀体151还于支撑面1515所处一端的内侧凹设形成收容孔1517。卡合环1511与接头10的环状部11相卡合，使阀体151转动连接于接头10上并不可从接头10上拆卸下来。阀片153由硅胶材料制成，其包括密封部1531以及形成于密封部1531周缘的柄部1533。密封部1531为厚度均匀的圆形薄片，其厚度范围为0.2~0.8毫米。密封部1531挡设于阀体151的一端。柄部1533厚度大于密封部1531并插设固定连接于阀体151的收容孔1517中。
弯管20为弯折状，其一端插设于防窒息阀15内并贴合于支撑面1515上。弯管20于周缘向外凸设有两个卡扣件21。两个卡扣件21分别卡入防窒息阀15的两个卡孔1513中。弯管20邻近防窒息阀15的一端的内壁形成相对弯管20轴线倾斜的贴合面23，并于贴合面23上开设有两个防窒息孔231，防窒息孔231贯通弯管20的侧壁。弯管20远离接头10的一端对称设置有卡扣25并邻近该端部环绕周缘形成有密封环27。
请一并参阅图6及图7，壳体30的前视轮廓近似为等腰三角形。在本实施方式中，壳体30的前视轮廓的长约90~100毫米，宽约80~85毫米。弯管20卡扣于壳体30上且可相对于壳体30旋转。壳体30包括依次连接的接头部31、壳体部33以及接口部35。壳体30的尺寸沿着接头部33向接口部35逐渐增大。接头部31为圆环状，且转动套合于弯管20的端部。接头部31远离壳体部33的端部形成有环形密封面311，且接头部31的内侧周缘向内凸伸形成环形的卡合肋313，接头部31的外侧周缘向外凸伸形成两个卡位315及两个扣位317。接头部31的密封面311紧密贴合于弯管20的密封环27上，卡合肋313从密封环27的一侧卡合于两个卡扣25上。弯管20的密封环27可保证壳体30相对弯管20旋转时的有效密封。壳体30的两个卡位315对称设置，两个扣位317对称设置，且两个卡位315的连线与两个扣位317的连线垂直。
壳体部33的横截面轮廓为三角形状，且壳体部33的截面尺寸从接头部31向接口部35逐渐增大。如图6所示，壳体部33依外表轮廓分为处于上部的第一壳体区域331和处于下部的第二壳体区域333，其中第一壳体区域331构成收容佩戴者鼻部的内腔，而第二壳体区域333构成收容佩戴者口部区域的内腔。第一壳体区域331靠近第二壳体区域333处设置有氧气管接口3311，用于特殊情况下，如加氧通气治疗时连接氧气管。而于正常情况下，接口3311需用密封塞3313密封以防漏气。第一壳体区域331远离第二壳体区域333处开设有多个排气孔3315。在本实施方式中，排气孔3315的数量为25~30个。排气孔3315为圆形，且其内径约为0.6~0.9毫米。
请参阅图8至图11，柔性罩壳50的形状设计符合人体工程学，可匹配大部分患者不同的口、鼻部轮廓。在本实施方式中，柔性罩壳50为单层硅胶制成且不可拆卸地形成于壳体30的接口部35上。柔性罩壳50的硅胶材质的邵氏硬度约为40度。柔性罩壳50的两端分别具有第一开口51与第二开口53。第一开口51及第二开口53的形状轮廓与佩戴者的口、鼻部的前视轮廓相一致。第一开口51朝向壳体30，第二开口53远离壳体30并朝向佩戴者的口、鼻部。第二开口53的边缘形成有柔性衬垫532。佩戴时，柔性衬垫532沿着佩戴者的鼻梁、脸颊和下唇/下巴部位的轮廓与其脸部皮肤相接触，并形成气密。柔性罩壳50的厚度从第一开口51向第二开口53处逐渐减小，其最薄处的厚度约0.4毫米。柔性罩壳50环绕第一开口51的周缘上凹设形成嵌合槽511。嵌合槽511开设于柔性罩壳51朝向壳体30的端面上且紧密套设于壳体30的接口部35上，即接口部35的周壁上。
柔性罩壳50按外形轮廓分为与佩戴者鼻部接触的鼻部接触区55及与嘴部接触的口部接触区57。鼻部接触区55与壳体部33的第一壳体区域331处于同一侧。口部接触区57与壳体部33的第二壳体区域333处于同一侧。鼻部接触区55上凹设形成有缓冲结构58。缓冲结构58为从鼻部接触区55的顶端沿两侧向口部接触区57延伸的狭长状结构。缓冲结构58包括第一缓冲部581、第二缓冲部583以及连接第一缓冲部581和第二缓冲部583的内凹曲面585。第一缓冲部581靠近第一开口51，第二缓冲部583靠近柔性衬垫532。第一缓冲部581、第二缓冲部583及内凹曲面585均相对于柔性罩壳50横截面的中轴线对称设置。内凹曲面585的内凹深度从中部向第一缓冲部581及第二缓冲部583逐渐变浅，且从鼻部接触区55向口部接触区57的方向逐渐变浅。在本实施方式中，内凹曲面585的轮廓线所在的平面A(参阅图11)相对于第一开口51与第二开口53的中心连线倾斜，且沿着口部接触区57向鼻部接触区55的方向逐渐远离第二开口53。第二缓冲部585的顶端相对于第一缓冲部581向外凸伸。第一缓冲部581和第二缓冲部585之间的最大间距约为10~16毫米。内凹曲面585的内凹深度为10~13毫米，其横截面轮廓的曲率半径范围为4~40毫米。所述内凹曲面585各处的厚度是均匀的，其厚度的范围为0.4~1.5mm。缓冲结构58的第一缓冲部581和第二缓冲部583之间的距离随着内凹曲面585的压缩和回复，可在一定范围内自由调整。当鼻梁较高的患者佩戴面罩100时，柔性罩壳50上的缓冲结构58的第一缓冲部581与第二缓冲部583之间的间距将缩小，以自动匹配鼻梁患者的鼻部轮廓，进而提高其适配性。同时，由于缓冲结构58的缓冲作用，在不影响柔性罩壳50与患者脸部皮肤之间气密性的前提下，可明显降低佩戴时柔性罩壳50对患者鼻梁部位形成的压力，避免长时间佩戴后在患者脸部形成红印，提高了佩戴舒适性。
鼻部接触区55邻近缓冲结构58设置有两个增厚的结构加强筋551，以及两个开口加强筋553。两个结构加强筋551对称设置于鼻部接触区55内侧的大致中部位置。开口加强筋553相互对称设置，且处于对应的结构加强筋551邻近第二开口53处。口部接触区57的内侧邻近鼻部接触区55处形成有两个增厚的第一加强筋571，且形成有远离鼻部接触区55的一个第二加强筋575(参见图11)。两个第一加强筋571对称设置且分别邻近鼻部接触区55的结构加强筋551。第二加强筋575处于两个第一加强筋571之间。在本实施方式中，结构加强筋551的厚度约为2.5~3毫米，开口加强筋553的厚度约为 1毫米。第一加强筋571的厚度约为2.5~4毫米，第二加强筋575的厚度约为2~3.5 毫米。柔性罩壳50与壳体30之间通过二次注塑加工工艺而一体成型，从而形成不可拆卸的平滑的无缝连接，使产品更为美观及可靠。而且不同尺码的面罩100的壳体30可以共用，通过调整柔性罩壳50的大小及轮廓来可形成不同款的面罩100。在本实施方式中，鼻部接触区55远离壳体部30的一侧与口部接触区57远离壳体30的一侧共同形成围绕第二开口53的柔性衬垫。
请参阅图12至图14，支架80套设于壳体30上，其包括结合部81、由结合部81朝一端延伸的弧形梁83，以及形成于弧形梁83远离结合部81一端的连接端85。结合部81中部开设有圆形的结合孔811并于两侧向外延伸形成有拉持部812。结合孔811可拆卸地套设于壳体30上。结合部81朝向壳体30的一侧于结合孔811周缘对应两个拉持部812形成两个卡孔813，并对应弧形梁83凹设形成两个卡槽815。两个卡孔813的连线与两个卡槽815的连线垂直。请一并参阅图15至图17，壳体30的两个卡位315及两个扣位317分别卡入两个卡槽815与两个卡孔813中。两个拉持部812悬置于人脸处，其中开设有连接孔8121。连接孔8121大致为方形，其长度范围为18~20毫米，宽度约为4毫米。其中支架80的一个拉持部812上形成有连通连接孔8121的开口8123。开口8123形成于拉持部812邻近弧形梁83的一侧。开口8123便于患者手动将绑带90从对应的连接孔8121中取出，或套入对应的连接孔8121，而不需完全或部分解开绑带90，即可轻松地完成面罩100的佩戴与拆卸，提高患者使用的便利性。可以理解，拉持部812也可以不设有开口8123。
弧形梁83整体呈拱形条状，其沿结合部81朝一侧弯折延伸，然后再向相反一侧弯折延伸，使其整体呈扁化的“S”形。弧形梁83的长度方向平行于壳体部33的第一壳体区域331与第二壳体区域333的中心连线，且垂直于两个拉持部812的中心连线。弧形梁83还于邻近结合部81处开设有开孔831，开孔831与壳体的排气孔3315区域对应设置，以使气孔3315与外界相通。连接端85悬置于人的额头上，可在绑带90的拉持下带动弧形梁83向壳体30一侧弹性弯折。连接端85上并列开设有两个连接孔851。连接端85的连接孔851大致为条状孔，其宽度约3~4毫米，长度约18~20毫米。在本实施方式中，支架80的连接端85并不与人的额头接触，因此支架80为非接触支架，即三点式悬浮支架。
请参阅图18，绑带90包括环绕于头部后侧的主体部91以及形成于主体部91上的两个第一连接带93及两个第二连接带95。两个第一连接带93与两个第二连接带95相互间隔。每个第一连接带93邻近端部形成有粘扣部931，并于端部上设有搭扣件933。搭扣件933穿过支架80的连接孔851后折回并粘扣于粘扣部931上。在本实施方式中，粘扣部931为形成于第一连接带93外表面的圈面织物。两个第二连接带95的结构与两个第一连接带93的结构相似，两个第二连接带95分别穿设连接于支架80的两个连接孔8121内。可以理解，当不佩戴时，绑带90可与支架80相分离。
组装面罩100时，将防窒息阀15卡扣于接头10上，将弯管20卡扣于防窒息阀15上。将壳体30可拆卸地扣合于弯管30上，从而将柔性罩壳50一并连接于弯管30上。将支架80卡扣于壳体30上。将绑带90连接于支架80上。
面罩100在使用时，将绑带90的主体部91环绕佩戴者的头部后侧，将两个第一连接带93的搭扣件933穿过支架80上对应的连接孔851并粘扣于粘扣部931上，将两个第二连接带95连接于支架80的两个连接孔8121，从而将面罩100固定在佩戴者的口、鼻部接触区，调整柔性罩壳50的第二开口53，使其对应收容佩戴者的鼻部接触区。将接头10连接空气输送管。当正压可呼吸空气经接头10进弯管20时，在正压气体的压力及流量作用下，防窒息阀15的密封部1531可相对柄部1533弹性弯折并贴合于弯管的贴合面23上从而将防窒息孔231封闭，以防止气流经防窒息孔231逸出弯管20。
由于支架80采用特别的弧度设计，在佩戴时支架80的连接端85不会接触到患者的额头部位，即不采用传统的额撑结构，可避免长时间佩戴产生不舒适感。而仅通过调整绑带90的两条第一连接带93及两条第二连接带95的佩戴力度即可调整支架80的连接端85与佩戴者额头之间的距离，进而调整面罩100佩戴的角度和松紧程度。
而为了满足不同年龄阶层的患者的使用需求，一般需要设计大、中、小三款产品供患者选择。本案中，由于不同尺码的面罩100的壳体30是共用的，仅通过调整柔性罩壳50的大小及轮廓来形成大、中、小三款面罩100。因此，大、中、小三款面罩100均可共用壳体30的注塑模具，可节省模具成本。而且由于三款面罩100通用一款壳体30，则大、中、小三款面罩100也可共用与壳体30匹配的支架80，可节省支架80设计及制造的成本。
柔性罩壳50上的缓冲结构58可根据佩戴者鼻部的轮廓对第一缓冲部581与第二缓冲部583之间的间距进行调整，以匹配不同使用者的鼻部轮廓，因而面罩100可在满足适配的前提下提高佩戴的舒适度和密封性能。另外，在绑带90的拉力作用下，支架80两端的弧形梁83能够向壳体30的一侧弹性弯折，以缓冲及平衡绑带90的拉力。
柔性罩壳50内侧的结构加强筋551、开口加强筋553、第一加强筋571及第二加强筋575增强柔性罩壳50的结构稳定度，防止柔性罩壳10接触到患者鼻部皮肤后受力而向下坍陷，导致佩戴不稳、漏气等问题。因而在保证皮肤接触舒适度的前提下，能保证单层硅胶结构的柔性罩壳50的稳定性。
可以理解，当支架80能够与壳体30牢固扣合时，壳体30上的卡位315及扣位317的数量及位置可以根据需要设计，同时，支架80的卡槽815与两个卡孔813的数量及位置需要对应地设计。
可以理解，当弯管20上没有开设防窒息孔231时，防窒息阀15可以省略，弯管20直接连接于接头10上。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (12)

  1. 一种面罩，其特征在于，包括：
    接头；
    防窒息阀，连接于所述接头上；
    弯管，连接于所述防窒息阀上；
    壳体，连接于所述弯管上；
    柔性罩壳，设于所述壳体远离所述弯管的一端，所述柔性罩壳上开设有第一开口与第二开口，所述第一开口朝向所述壳体，所述第二开口远离所述壳体，所述柔性罩壳在邻近所述第二开口的边缘区域形成有柔性衬垫；所述柔性罩壳包括鼻部接触区及口部接触区，所述鼻部接触区上凹设形成有缓冲结构，所述缓冲结构为从所述鼻部接触区的顶端沿两侧向所述口部接触区延伸的狭长状结构，所述缓冲结构包括第一缓冲部、第二缓冲部以及连接所述第一缓冲部和所述第二缓冲部的内凹曲面，所述第一缓冲部邻近所述第一开口，所述第二缓冲部邻近所述柔性衬垫，所述内凹曲面可变形以调整所述第一缓冲部与所述第二缓冲部之间的距离；
    支架，卡设于所述壳体上，所述支架包括结合部、由所述结合部朝一端延伸的弧形梁，以及形成于所述弧形梁远离所述结合部一端的连接端，所述结合部上开设有结合孔并于所述结合孔两侧分别向外延伸形成有拉持部，所述结合孔可拆卸地套设于所述壳体上；以及
    绑带，用于连接所述支架的两个拉持部及连接端以协助佩戴所述面罩，
    其中，所述面罩于佩戴时，所述支架的两个拉持部悬置于佩戴者脸部位且所述连接端悬置于额头部位，以使所述支架不与脸部及额头的皮肤接触。
  2. 如权利要求1所述的面罩，其特征在于，所述柔性罩壳为硅胶制成，所述柔性罩壳的厚度从所述第一开口向所述第二开口处逐渐减小，其厚度最小值为0.4毫米，所述柔性罩壳环绕所述第一开口的周缘上凹设形成嵌合槽，所述嵌合槽紧密套设于所述壳体的周壁上。
  3. 如权利要求2所述的面罩，其特征在于，所述柔性罩壳与所述壳体之间无缝连接，不可拆卸。
  4. 如权利要求1所述的面罩，其特征在于，所述第一缓冲部、第二缓冲部及内凹曲面均相对于所述柔性罩壳的中轴线对称设置，所述内凹曲面的内凹深度从所述鼻部接触区顶端向所述口部接触区延伸的方向逐渐变浅。
  5. 如权利要求1所述的面罩，其特征在于，所述内凹曲面的长度方向的轮廓线所在的平面相对于所述第一开口与所述第二开口的中心连线倾斜，且沿着自所述口部接触区向所述鼻部接触区的方向逐渐远离所述第二开口，所述第二缓冲部的顶端相对于所述第一缓冲部向外凸伸。
  6. 如权利要求1所述的面罩，其特征在于，所述内凹曲面的横截面轮廓的曲率半径范围为4~40毫米，所述第一缓冲部与所述第二缓冲部之间的最大间距为10~16毫米。
  7. 如权利要求1所述的面罩，其特征在于，所述内凹曲面的厚度是均匀的，其厚度范围为0.4~1.5mm。
  8. 如权利要求1所述的面罩，其特征在于，所述鼻部接触区邻近所述缓冲结构设置有两个增厚的结构加强筋及两个开口加强筋，所述两个结构加强筋对称设置于所述鼻部接触区内侧且处于所述第二缓冲部远离所述第一缓冲部的一侧，所述两个开口加强筋相互对称设置，且处于对应的结构加强筋邻近所述第二开口处。
  9. 如权利要求8所述的面罩，其特征在于，所述口部接触区的内侧邻近所述鼻部接触区处形成有两个增厚的第一加强筋，且形成有远离所述鼻部接触区的第二加强筋，所述两个第一加强筋对称设置且分别邻近所述鼻部接触区的两个结构加强筋，所述第二加强筋处于所述两个第一加强筋之间。
  10. 如权利要求9所述的面罩，其特征在于，所述结构加强筋的厚度为2.5~3毫米，所述开口加强筋的厚度为1毫米，所述第一加强筋的厚度为2.5~4毫米，所述第二加强筋的厚度为2~3.5毫米。
  11. 如权利要求1所述的面罩，其特征在于，所述接头的一端环绕其内侧周缘向内凸伸形成环状部，所述防窒息阀包括阀体及连接于所述阀体上的阀片，所述阀体的一端环绕其周缘向外凸设形成卡合环，其另一端于周缘外侧开设有两个卡孔并于端面内侧凹设形成收容孔，所述卡合环插设于所述接头内并卡合于所述接头的环状部上，所述阀片由硅胶材料制成且部分卡设于所述收容孔中，所述弯管一端于周缘向外凸设有两个卡扣件，所述两个卡扣件插设于所述阀体内并卡设于所述阀体的两个卡孔内。
  12. 如权利要求11所述的面罩，其特征在于，所述阀片包括密封部以及形成于所述密封部周缘的柄部，所述密封部挡设于所述阀体的一端，所述柄部插设固定于所述阀体的收容孔中，所述弯管邻近所述防窒息阀的一端的内壁形成有相对所述弯管轴线倾斜的贴合面，所述贴合面上开设有两个防窒息孔，所述防窒息孔贯通所述弯管的侧壁，所述防窒息阀的密封部可相对所述柄部弹性弯折并贴合于所述弯管的贴合面上，从而将所述防窒息孔封闭。
PCT/CN2016/073476 2015-02-05 2016-02-04 面罩 WO2016124145A1 (zh)

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CN104587580B (zh) 2018-03-02

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