CN216294938U - Automatic pressure boost respirator - Google Patents

Abstract

The utility model provides an automatic pressurization breathing mask which comprises a mask body, a header pipe, an air inlet valve, an oxygen inlet, an air outlet pipe and an air outlet pressurization valve. The mask body is used for coating the mouth and the nose of the face, the oxygen inlet is connected to the mask body, the air inlet pipe and the air outlet pipe are fused into a main pipe at the near end and connected with the mask body, the air inlet valve is arranged between the air inlet pipe and the main pipe, and the air outlet pressurizing valve is arranged in the air outlet pipe; the air outlet booster valve comprises a valve opening, a valve sheet, a central shaft, a spring and a pressure adjusting button, the valve opening is arranged between the air outlet pipe and the header pipe, the valve sheet is positioned on the far side surface of the valve opening, the spring surrounds the central shaft, the near end of the spring is abutted against the valve sheet, and the far end of the spring can adjust the tension through the pressure adjusting button. The automatic pressurizing breathing mask provided by the utility model has an automatic pressurizing function, and the internal pressure of the mask is adjustable, so that the mask can be used for pressurizing treatment of cardiopulmonary insufficiency and altitude reaction.

Description

Automatic pressure boost respirator

Technical Field

The utility model belongs to the technical field of medical supplies, and particularly relates to an automatic pressurizing breathing mask.

Background

When cardiopulmonary insufficiency occurs or altitude reaction occurs in an plateau area, symptoms such as hypoxia and dyspnea occur, and one of treatment measures is to use a breathing mask to inhale oxygen. The existing breathing mask only prevents oxygen from diffusing and disappearing to the periphery when absorbing oxygen, increases the oxygen concentration in the mask, has no pressurization effect, has very limited curative effect on a plurality of patients, so that partial anoxic patients get worse finally, and has to be ventilated mechanically by a respirator on an endotracheal intubation. Some existing pressurized breathing masks are provided with manually-retractable compressed air bags similar to accordion structures, and people need to operate the masks aside for assistance; or the electric machine is needed to drive the supercharging device, so that the cost is high, the structure is complex, the carrying is inconvenient, and the popularization and the application are difficult.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic pressurizing breathing mask, aiming at the problems of inconvenient operation and complex structure of a pressurizing structure of the existing breathing mask.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides an automatic pressurization breathing mask which comprises a mask body, a header pipe, an air inlet valve, an oxygen inlet, an air outlet pipe and an air outlet pressurization valve, wherein the mask body is used for coating the mouth and the nose of the face of a human body; the oxygen inlet is connected with the mask body; the near end of the air inlet pipe and the near end of the air outlet pipe are fused into a main pipe, and an air inlet and an air outlet are arranged at the front lower part of the mask body and connected with the main pipe; the air inlet valve is arranged between the air inlet pipe and the header pipe, and the air inlet valve is a one-way valve body which conducts flow from the air inlet pipe to the header pipe and the mask body in a one-way mode; the air outlet booster valve is arranged in the air outlet pipe and comprises a valve opening, a valve sheet, a central shaft, a spring and a pressure adjusting button, the valve opening is arranged between the air outlet pipe and the header pipe, the valve sheet is positioned on the far side face of the valve opening, the spring surrounds the central shaft, the near end of the spring is abutted against the valve sheet, the valve sheet is temporarily abutted against and sealed by the pressure provided by the spring, the valve opening is arranged at the far end of the air outlet pipe in an axial displacement mode, and the far end of the spring can be adjusted in an axial displacement mode through the pressure adjusting button to adjust the tension of the spring and is temporarily positioned in the air outlet pipe.

Optionally, the mask body comprises a hard body part, an elastic part and a soft body part, which are fixedly connected and integrated together; the hard body part is of a turtle-back-shaped convex structure, and the free edge of the hard body part is generally consistent with the convex-concave structure of the human face; the oxygen inlet is arranged on one side of the hard body part, is a tubular bulge and is provided with a lacing and a cover body, the lacing is respectively connected with the oxygen inlet and the cover body, and the cover body is used for temporarily closing the oxygen inlet; the air inlet and outlet is arranged at the front lower part of the hard body part; the elastic part is an extension of the free edge of the hard part, and the free edge of the elastic part is consistent with the convex-concave structure of the human face, turns inwards and becomes thinner gradually after contacting the human face; the soft body portion has originated elastic component and human facial contact surface outer fringe, just the free reason of soft body portion inwards overturns the free reason that covers the elastic component, and the area of coverage area is greater than the area of elastic component and facial contact surface, finally the face guard body and human facial contact surface follow human facial convex-concave shape looks adaptation.

Optionally, an air outlet pipe is arranged in the front direction of the main pipe, and an air inlet pipe is arranged in the downward direction of the main pipe; optionally, the main pipe is provided with an air inlet pipe in the forward direction, and the main pipe is provided with an air outlet pipe in the downward direction. At the moment, the included angle between the air inlet pipe and the air outlet pipe is 90 degrees, and the air inlet pipe and the air outlet pipe are inverted L-shaped and then connected with the header pipe.

Optionally, an air outlet pipe is arranged in the front direction of the main pipe, and an air inlet pipe is arranged in the front direction of the main pipe; optionally, the main pipe is provided with an air inlet pipe in the front direction, and the main pipe is provided with an air inlet pipe and an air outlet pipe in the front direction and the lower direction. At the moment, the included angle between the air inlet pipe and the air outlet pipe is 45 degrees, and then the air inlet pipe is connected with the header pipe.

Optionally, the main pipe is provided with an air outlet pipe in the front-up direction, and the main pipe is provided with an air inlet pipe in the front-down direction; optionally, the main pipe is provided with an air inlet pipe in the front-up direction, and the main pipe is provided with an air outlet pipe in the front-down direction. At the moment, the included angle between the air inlet pipe and the air outlet pipe and the included angle between the air inlet pipe and the human body face are 60 degrees, and the air inlet pipe and the air outlet pipe are Y-shaped and connected with the header pipe.

Optionally, the main pipe is provided with an air outlet pipe in the front-up direction, and the main pipe is provided with an air inlet pipe in the front-down direction; optionally, the main pipe is provided with an air inlet pipe in the front-up direction, and the main pipe is provided with an air outlet pipe in the front-down direction. The air inlet pipe is connected with the main pipe, and the included angle between the air inlet pipe and the air outlet pipe and the included angle between the air inlet pipe and the human body face are any other angles.

Optionally, the air inlet and outlet arranged at the front lower part of the mask body part is movably connected with the main pipe in a closed manner (preferred), and can also be fixedly connected with the main pipe (secondary selection).

Optionally, the intake valve is formed by connecting three layers: the far layer of the air inlet valve is provided with a first square connecting plate, the center of the air inlet valve is provided with a circular first air inlet hole, the diameter of the first air inlet hole is smaller than that of the air inlet pipe, and the air inlet pipe is connected to the far side of the first square connecting plate; the middle layer of the air inlet valve is provided with a second square connecting plate which is an elastic diaphragm, the center of the elastic diaphragm is cut into an omega-shaped structure to form a valve, the diameter of the valve is larger than that of the first air inlet hole, and the bottom of the omega-shaped structure is positioned on one side in front; a third square connecting plate is arranged on the layer close to the air inlet valve, a circular second air inlet hole is formed in the center of the third square connecting plate, two upward half-moon-shaped arc limiting walls are arranged on the left free edge and the right free edge of the second air inlet hole, and the diameter of the second air inlet hole and the distance between the two arc limiting walls are equal to or larger than the diameter of the air inlet pipe; the first square connecting plate, the second square connecting plate and the third square connecting plate are squares with equal areas and are sequentially connected in a stacking mode.

Optionally, a valve opening of the air outlet pressurization valve is a circular table surface protruding towards the mask body, the outer edge of the valve opening is connected with the air outlet pipe and the inner wall of the header pipe, a first central hole is formed in the center of the valve opening, a plurality of first support strips with the same radial radius are arranged on the valve opening at the periphery of the first central hole, and the two adjacent first support strips are arranged in a hollow manner; the valve sheet is of a conical surface structure matched with the valve opening in shape, the radius of the valve sheet is larger than that of the first supporting strip, the valve sheet covers the valve opening, and a rubber pad is arranged on the contact surface of the valve sheet and the valve opening; the tip of the valve plate is provided with a central rod extending forwards, and the central rod penetrates through the first central hole to enter the main pipe.

Optionally, the central shaft is the axis of the spring, and the end of the proximal section of the central shaft is connected with the valve plate; the tail end of the far section of the central shaft passes through the pressure adjusting button and is flush with the far side surface of the pressure adjusting button or slightly exposes out of the head end; the spring is arranged around the periphery of the central shaft.

Optionally, the center pin is including interconnect fixed near section and far section, the near section of center pin is the gradually increasing radial structure such as streamlined or "bullet head" shape of diameter by near to far being, also can be conical, round platform shape or cylindrical structure, and its cross-section is radial structure such as "ten" word, "rice" font, the fretwork of other parts, the far section of center pin is shaft-like structure, this moment the near section of spring and the near section form looks adaptation of center pin, the far section diameter of spring is greater than the diameter of the near section distal surface of center pin. Alternatively, the central shaft may be a rod-like structure of uniform diameter, in which case the spring may be olive-shaped, conical, truncated cone-shaped or cylindrical.

Optionally, the near section of the air outlet pipe is provided with an expanded pipe section with a pipe diameter expanded from the valve opening to the outside to form a horn shape or a round table shape with uniform expansion, the near end of the expanded pipe section and the header pipe are integrated to form a streamline structure, the length of the expanded pipe section is greater than the moving distance of the valve piece and the central shaft in the inner section of the air outlet pipe, and the valve piece is prevented from blocking the air outlet pipeline.

Optionally, the pressure adjusting device further comprises a support frame formed by radial support bars, the diameter of each radial support bar is larger than the outer diameter of the air outlet pipe and smaller than or equal to the outer diameter of the pressure adjusting button, a plurality of spaced apart grooves are formed in the pipe wall of the distal section of the air outlet pipe, the number of the radial support bars is consistent with the number of the grooves, the radial support bars are embedded into the grooves in a one-to-one correspondence manner, and a second central hole for the distal section of the central shaft to pass through is formed in the center of the support frame; the pressure adjusting button is of an annular structure, the inner diameter of the pressure adjusting button is equal to the outer diameter of the far section of the air outlet pipe, a first internal thread is arranged in a cavity of the pressure adjusting button, a first external thread is arranged on the outer wall of the far section of the air outlet pipe, the length of the first external thread of the far section of the air outlet pipe is greater than that of the first internal thread of the inner wall of the pressure adjusting button, the first internal thread of the inner wall of the pressure adjusting button is connected with the first external thread of the outer wall of the far section of the air outlet pipe, the periphery of the pressure adjusting button is of a gear-shaped structure, and an arrow which points to the outside of the circumference in the direction and is used for indicating a rotating angle is arranged on the outer side surface of one tooth of the gear-shaped structure; or one of the teeth may be provided relatively sharply as an arrow to indicate the angle of rotation.

Optionally, the inner side surface of the support frame is provided with an inner protrusion at a position which takes the axis as a circle center and is smaller than the diameter of the distal end surface of the spring, so as to fix the circumference of the distal end of the spring outside the inner protrusion to be coaxial with the central axis and the air outlet pipe, thereby increasing the stability of the spring.

Optionally, the pressure adjusting button is formed by fusing a circular surface and a section of circular tube, the circular surface is located at the distal end of the circular tube and is fused with the distal end of the circular tube, the outer diameter of the circular tube is equal to the inner diameter of the distal section of the air outlet tube, a second internal thread is arranged on the inner wall of the distal section of the air outlet tube, a second external thread is arranged on the outer wall of the circular tube, the length of the second internal thread in the air outlet tube is greater than the length of the circular tube and the second external thread, the pressure adjusting button is connected with the second internal thread of the air outlet tube through the second external thread, and a third central hole for the distal section of the central shaft to pass through is formed in the center of the circular surface of the pressure adjusting button; a plurality of second support bars with the same radial radius are arranged on the periphery of the third central hole on the circular surface, the number of the second support bars is even, and the two adjacent second support bars are hollowed out; the lateral surface of circular face is provided with two slice outer archs, two with arbitrary two second support bars on same diameter the outer arch of slice is corresponding two the extension of second support bar is used for rotatory pressure adjustment knob, and one of them be provided with the outside arrow head that is used for instructing turned angle of direction pointing circumference on the pipe distal surface at the outer arch place of slice.

Optionally, the inner side surface of the circular surface uses the axis as a circle center, and an inner protrusion is arranged on the second support bar at a position smaller than the diameter of the distal end surface of the spring, so as to fix the circumference of the distal end of the spring between the inner protrusion and the circular tube to be coaxial with the central shaft and the air outlet tube, thereby increasing the stability of the spring.

Optionally, the round face of the pressure adjusting button can be arranged at the periphery of the third central hole and is only provided with a second support bar, the second support bar is provided with two flaky outer protrusions, the two flaky outer protrusions are extensions of the two second support bars and are used for rotating the pressure adjusting button, and other parts of the round face are arranged into sieve pore-like structures.

Optionally, a valve barrier is arranged between the valve and the air outlet pressure increasing valve, the valve barrier includes a main body portion, a stalk portion and a grid bottom, the main body portion is of a fence-like structure and is connected to the grid bottom through the stalk portion, a linear gap is reserved between one side in front of the third square connecting plate and one side in front of the second square connecting plate, and the grid bottom is clamped in the linear gap between the second square connecting plate and the third square connecting plate.

Optionally, the outer side wall of the far section of the air outlet pipe is provided with linear scales from far to near, the outer peripheral wall of the far end of the air outlet pipe is provided with annular scales, the linear scales are used for displaying the compression degree of the spring, and the annular scales are used for displaying the rotating angle of the pressure adjusting button.

Optionally, the automatic pressurizing respiratory mask further comprises two belts, the two belts are respectively provided with a first belt connecting portion on each of two sides of the lower portion of the hard body portion, the upper end of the hard body portion is provided with a second belt connecting portion, the second belt connecting portion comprises a transverse portion and a longitudinal portion, the upper end of the longitudinal portion is perpendicular to the middle of the transverse portion and movably connected with the middle of the transverse portion through a buckle to form a T-shaped structure, and the lower end of the longitudinal portion is movably connected with the upper end of the hard body portion through a buckle; the transverse part is contacted with the forehead part of the human body, and two ends of the transverse part are respectively provided with a linear hole which is parallel and downward; the strap is connected with the first strap connecting portion through setting up spherical connector, the strap passes the linear hole of second strap connecting portion, and the bonding of turning over after the tensioning can with the fixed cladding of automatic pressure boost respirator is in human facial oronasal department.

According to the automatic pressurizing breathing mask provided by the utility model, due to the tension of the spring arranged in the air outlet pressurizing valve, the valve sheet cannot be opened in the early expiration period, and the valve sheet can be pushed open to exhaust only when the pressure in the mask body is greater than the tension of the spring after expiration to a certain degree. When a patient exhales, particularly exhales according to the original same strength, all inhaled gas cannot be exhausted, the residual air pressure at the end of expiration in the mask body is always greater than the external atmospheric pressure, the tension of the spring is the increased pressure in the mask, so that the pressure in the mask can be increased through self-breathing, a pressurization effect can be realized, a high-pressure environment can be established inside the mask and a respiratory system, and the mask is particularly suitable for people with normal or approximately normal respiratory muscle function and certain respiratory power, the tension of the spring can be controlled by adjusting the position of the pressure adjusting button in the air outlet pipe, the purpose of adjusting the pressure in the mask is achieved, and the result is similar to the Positive End Expiratory Pressure (PEEP) function of a breathing machine. If the respiratory power of the patient is insufficient, the artificial air bag or the noninvasive ventilator can be connected into an air inlet pipe to assist ventilation, and the result is similar to the Continuous Positive Airway Pressure (CPAP) function of the ventilator.

Due to the mechanism, when the mask is used in a plateau area, the pressure of gas in the mask is due to the tension of the spring, the end-expiratory gas cannot be exhausted, and the pressure of the gas in the mask body is higher than the pressure of the external atmosphere, so that the plateau reaction caused by low pressure in the plateau area can be prevented or relieved.

In any case, if the patient feels that the internal pressure of the mask is too large to affect breathing or feels untimely, the position of the pressure adjusting button of the adjusting layer can be adjusted to reduce the tension of the spring so as to adjust the internal pressure of the mask body at will, and the patient can also control the mask body according to the requirement. If the tension of the spring is adjusted to be completely disappeared and the pressure adjusting button is further retreated, the mask can be immediately converted into a common mask for use.

Drawings

FIG. 1 is a schematic diagram of an automatic pressurizing respiratory mask according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of an auto-pressurizing respiratory mask with an oxygen inlet and its straps and cover;

FIG. 3 is a schematic view of a first strap connection portion of an auto-boost respirator in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of a second strap connection portion of an auto-boost respirator in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an air inlet tube, an air inlet valve and a valve barrier of the auto-boost respirator according to an embodiment of the present invention;

FIG. 6 is a schematic view of another embodiment of an auto-pressurizing respiratory mask with a louver grid;

FIG. 7 is a schematic structural diagram of an outlet pipe and an outlet pressure-increasing valve of the automatic pressure-increasing breathing mask according to an embodiment of the present invention;

FIG. 8 is a schematic view of an outlet tube and an outlet pressure valve of an automatic pressure-increasing respiratory mask according to another embodiment of the present invention;

FIG. 9 is a schematic view of an outlet tube and an outlet pressure valve of an automatic pressure-increasing respiratory mask according to another embodiment of the present invention;

FIG. 10 is a schematic view of a harness of an automatic pressurizing respiratory mask according to an embodiment of the present invention;

FIG. 11 is a schematic view of a harness of an automatic pressurizing respiratory mask according to another embodiment of the present invention.

The reference numbers in the drawings of the specification are as follows:

1. a mask body; 11. a soft body portion; 12. an elastic portion; 13. a hard body portion; 131. an air inlet and an air outlet; 14. a first strap connecting portion; 141. a bottom crack; 142. a lateral surface crack; 15. a second strap connecting portion; 151. a transverse portion; 152. a longitudinal portion; 153. a linear hole; 16. an oxygen inlet; 161. a tie strap; 162. a cover body; 163. a gripper; 2. a header pipe; 3. an air inlet pipe; 31. an intake valve; 311. a first square connecting plate; 312. A first air intake hole; 313. a second square connecting plate; 314. a valve; 315. a third square connecting plate; 316. An arcuate confining wall; 317. a linear void; 318. a second air intake hole; 4. an air outlet pipe; 41. an expanded pipe section; 42. linear scale; 43. annular scales; 44. a second internal thread; 45. a spacing groove; 46. a first external thread; 5. an air outlet pressure increasing valve; 51. a valve port; 511. a first central aperture; 512. a first support bar; 52. A valve plate; 521. a rubber pad; 522. a center rod; 53. a central shaft; 53a, a central axis; 531. a proximal segment; 532. a distal segment; 54. a spring; 54a, a spring; 55. a pressure adjusting knob; 55a, a pressure adjusting button; 551. A circular tube; 552. a second supporting strip; 553. a third central aperture; 554. a sheet-like outer protrusion; 555. an inner protrusion; 555a, inner protrusion; 556. a second external thread; 557. a first internal thread; 6. a valve barrier; 61. a main body portion; 61a, a main body portion; 62. a stalk; 63. the bottom of the grid; 7. a support frame; 71. a radial support bar; 72. a second central aperture; 8. a belt; 81. a spherical connector; 811. a pellet; 812. a neck portion; 813. Connecting the bottom; 814. a strip-shaped hole; 82. hook and loop nylon connector.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "proximal", "distal" and "distal" are defined based on the distance from the human body side, "proximal" and "proximal" being the end sides closer to the human body, and "distal" being the end sides farther from the human body; the term "front" is the right side of the view of fig. 1 and the term "rear" is the left side of the view of fig. 1.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 9, an embodiment of the present invention provides an automatic pressurizing respiratory mask, including a mask body 1, a main tube 2, an air inlet tube 3, an air inlet valve 31, an oxygen inlet 16, an air outlet tube 4, and an air outlet pressurizing valve 5, where the mask body 1 is used to cover the mouth and nose of a human face; the oxygen inlet 16 is connected to the mask body 1; the near end of the air inlet pipe 3 and the near end of the air outlet pipe 4 are fused into a main pipe 2, and an air inlet and outlet 131 is arranged at the front lower part of the mask body 1 and connected with the main pipe 2; the air inlet valve 31 is arranged between the air inlet pipe 3 and the header pipe 2, and the air inlet valve 31 is a one-way valve body which conducts one-way flow from the air inlet pipe 3 to the header pipe 2 and the mask body 1; the outlet pressurizing valve 5 is arranged in the outlet pipe 4, the outlet pressurizing valve 5 comprises a valve opening 51, a valve sheet 52, central shafts 53, 53a, springs 54, 54a and pressure adjusting buttons 55, 55a, the valve opening 51 is arranged between the outlet pipe 4 and the manifold 2, the valve sheet 52 is positioned on the far side surface of the valve opening 51, the springs 54, 54a surround the central shafts 53, 53a respectively, the central shafts 53, 53a are coaxial with the springs 54, 54a respectively, and are used as the axes of the springs 54, 54a for fixedly supporting the springs 54, 54a, the near ends of the springs 54, 54a are abutted against the valve sheet 52, the valve sheet 52 is temporarily abutted against and closes the valve opening 51 by the pressure provided by the springs 54, 54a, the pressure adjusting buttons 55, 55a are axially movably arranged at the far end of the outlet pipe, the distal ends of the springs 54, 54a are temporarily positioned in the outlet tube 4 by adjusting the axial displacement of the pressure adjusting knobs 55, 55a to adjust the tension of the springs 54, 54 a.

Due to the tension of the springs 54, 54a arranged in the air outlet pressure increasing valve 5, the valve sheet 52 can not be opened in the early expiration period, and the valve sheet 52 can be pushed open for air exhaust only when the pressure in the mask body 1 is greater than the tension of the springs 54, 54a after expiration to a certain degree. When a patient exhales, particularly exhales according to the original same strength, all inhaled gas cannot be exhausted, the residual air pressure at the end of expiration in the mask body 1 is always higher than the external atmospheric pressure, the tension of the springs 54 and 54a is the increased pressure in the mask, so that the pressure in the mask can be increased through self-breathing, a pressurization effect can be achieved, a high-pressure environment can be established in the mask and a respiratory system, the mask is particularly suitable for a person with normal or approximately normal respiratory muscle function and certain respiratory power, the tension of the springs 54 and 54a can be controlled by adjusting the positions of the pressure adjusting buttons 55 and 55a in the air outlet pipe, the purpose of adjusting the pressure in the mask is achieved, and the result is similar to the function of positive end expiratory pressure ventilation (PEEP) of a breathing machine.

Due to the above mechanism, when the mask body 1 is used in a plateau area, the pressure of the gas in the mask body 1 is due to the tension of the springs 54 and 54a, the end-tidal gas is not exhausted, and the pressure of the gas in the mask body 1 is higher than the pressure of the outside atmosphere, so that the plateau reaction caused by the low pressure in the plateau area can be prevented or alleviated. In either case, if the patient feels that the pressure inside the mask is too high to affect breathing or feels discomfort, the position of the pressure adjusting buttons 55, 55a can be adjusted to decrease the tension of the springs 54, 54a, so as to adjust the pressure inside the mask body 1 at will. The patient himself may also control it as desired. If the tension of the springs 54, 54a is adjusted to be completely lost and the pressure adjusting knobs 55, 55a are further retreated, the use can be immediately switched to the ordinary mask.

In an alternative embodiment, if the outlet duct 4 is not rigidly connected to the manifold 2, an elongated flexible conduit (not shown) may be provided between the outlet of the outlet duct 4 associated with the manifold 2 and the outlet plenum valve 5 to facilitate the patient's own adjustment of the pressure adjustment knobs 55, 55a in a full direct view.

In an alternative embodiment, if the outlet pipe 4 is not merged with the inlet pipe 3 to form the header pipe 2, two openings, namely an inlet opening and an outlet opening, are required to be arranged in front of the mask body hard body part 13, and the inlet pipe 3 and the inlet valve 31, the outlet pipe 4 and the outlet pressurizing valve 5 are respectively connected with the inlet pipe and the inlet valve.

In one embodiment, the mask body 1 comprises a hard body part 13, an elastic part 12 and a soft body part 11, which are integrated together; the hard body part 13 is of a turtle-back-shaped convex structure, and the free edge of the hard body part is generally consistent with the convex-concave structure of the human face; the oxygen inlet 16 is provided on the hard body portion 13.

As shown in fig. 2, the oxygen inlet 16 is a tubular protrusion and is provided with a fastening band 161 and a cover 162, the fastening band 161 is connected to the oxygen inlet 16 and the cover 162, respectively, and the cover 162 is used for temporarily closing the oxygen inlet 16; the cover 162 is used to temporarily close the oxygen inlet 16, so as to close the oxygen inlet 16 when no oxygen is used or used, thereby ensuring the tightness of the mask body 1. The cover 162 is made of an elastic material, the top end of the cover 162 is provided with a grip 163 for easy operation, the tie 161 is used for preventing the cover 162 from being lost, the oxygen inlet 16 is a tubular protrusion, and the outer diameter of the oxygen inlet has a size consistent with the size of the existing oxygen therapy tube.

As shown in fig. 1, the air inlet/outlet 131 is provided in front of and below the hard body portion 13; the hard body 13 is made of a hard material; the elastic part 12 is a continuation of the free edge of the hard part 13 and is hermetically connected and fused with the hard part 13; the free edge of the elastic part 12 is consistent with the convex-concave structure of the human face, the free edge is turned inwards and becomes thinner gradually after contacting with the human face so as to increase the contact area with the face, thus not only reducing the discomfort caused by the pressure on the face when in use, but also ensuring the close contact with the face to prevent the gas in the mask from leaking outwards, and the elastic part is made of relatively hard elastic material so as to ensure the stability of the shape of the mask body 1 and the texture of the elastic part is between the hard body part 13 and the soft body part 11; the soft body part 11 originates from the outer edge of the contact surface of the elastic part 12 and the human face, the free edge of the soft body part 11 is turned inwards to cover the free edge of the elastic part 12, the covering area is larger than the area of the contact surface of the elastic part 12 and the face, and the free edge is directly contacted with the skin of the human face, so that the gap between the elastic part 12 and the human face is filled, the mask body 1 is more tightly contacted with the human face, and finally the contact surface of the mask body 1 and the human face is matched with the convex-concave shape of the human face; the soft body 11 is made of a very soft material and may have an elastic membrane structure with a certain thickness to minimize discomfort caused by the mask body 1 pressing the face. In other embodiments, the soft body 11 may be configured as an annular closed low pressure air bag connected end to end, covering the free edge of the elastic portion 12 contacting the face, to form a soft closed loop. In different embodiments, the hard body portion 13, the elastic portion 12 and the soft body portion 11 are fixedly connected and integrated into a molding structure, and the mask body 1 is used for covering the mouth and nose of the face of a human body.

In a preferred embodiment, the main pipe 2 is provided with an air outlet pipe 4 in the front direction, the main pipe 2 is provided with an air inlet pipe 3 in the downward direction, at the moment, the included angle between the air inlet pipe 3 and the air outlet pipe 4 is 90 degrees, and the air inlet pipe 3 and the air outlet pipe are inverted L-shaped and then connected with the main pipe 2. Or in another preferred embodiment, the main pipe 2 is provided with an air inlet pipe 3 in the forward direction, and the main pipe 2 is provided with an air outlet pipe 4 in the downward direction. At the moment, the included angle between the air inlet pipe 3 and the air outlet pipe 4 is 90 degrees, and the air inlet pipe 3 and the air outlet pipe are inverted L-shaped and then connected with the header pipe 2.

In another preferred embodiment, an air outlet pipe 4 is arranged in the front direction of the main pipe 2, and an air inlet pipe 3 is arranged in the front direction of the main pipe 2; or the front part of the main pipe 2 is provided with an air inlet pipe 3, and the front part of the main pipe 2 is provided with an air outlet pipe 4. At the moment, the included angle between the air inlet pipe 3 and the air outlet pipe 4 is 45 degrees, and then the air inlet pipe is connected with the header pipe 2.

In another preferred embodiment, an air outlet pipe 4 is arranged in the front and upward direction of the header pipe 2, and an air inlet pipe 3 is arranged in the front and downward direction of the header pipe 2; or the gas inlet pipe 3 is arranged in the front-up direction of the header pipe 2, and the gas outlet pipe 4 is arranged in the front-down direction of the header pipe 2. At the moment, the included angle between the air inlet pipe 3 and the air outlet pipe 4 and the included angle between the air inlet pipe and the human face are 60 degrees, and the air inlet pipe and the human face are Y-shaped and connected with the header pipe.

In other embodiments, the gas outlet pipe 4 is arranged in the front-up direction of the main pipe 2, and the gas inlet pipe 3 is arranged in the front-down direction of the main pipe 2; optionally, the header pipe 2 is provided with an air inlet pipe 3 in the front-up direction, and the header pipe 2 is provided with an air outlet pipe 4 in the front-down direction. The air inlet pipe 3 and the air outlet pipe 4 form an included angle and an included angle with the human face, and are connected with the header pipe 2 at any angle.

In a preferred embodiment, the air inlet and outlet 131 provided at the front and lower part of the hard body 13 of the mask body 1 is hermetically and movably connected to the manifold 2. In other embodiments, the air inlet and outlet 131 and the manifold 2 may be fixedly connected.

In other embodiments, the mask body 1 may be configured in other structures, for example, considering that the mask body 1 is tightly attached to the face, and the pressure for binding may be too large to press the face, so as to cause discomfort for the patient, or because the mask body 1 is not tightly contacted with the face, a small amount of air leaks to affect the pressurization effect, the whole automatic pressurization mask may be configured as a helmet with the same pressurization structure, so as to seal the whole head; the jacket can also be designed to have the same pressurizing structure, and the waist part is provided with a tightening belt to seal the whole upper body; even whole-body-sealing space suit-like garments having the same pressurization structure may be designed, and the latter two may be provided with a neck connection (not shown).

As shown in fig. 5, in one embodiment, the intake valve 31 is formed by connecting three layers: the far layer of the air inlet valve 31 is provided with a first square connecting plate 311, the center of the first square connecting plate is provided with a circular first air inlet hole 312, the diameter of the first air inlet hole 312 is smaller than that of the air inlet pipe 3, and the air inlet pipe 3 is connected to the far side of the first square connecting plate; a second square connecting plate 313 is arranged at the middle layer of the air inlet valve 31, the second square connecting plate 313 is an elastic diaphragm, the center of the elastic diaphragm is cut into an omega-shaped structure to form a flap 314, the diameter of the flap 314 is larger than that of the first air inlet hole 312, and the bottom of the omega-shaped structure is positioned on one side in front; the cut line of the flap 314 has a certain width, so that a certain gap is formed between the flap 314 and the second square coupling plate 313, and the flap 314 is prevented from rubbing against the second square coupling plate 313 when being opened and closed. A third square connecting plate 315 is arranged at the layer near the air inlet valve 31, a circular second air inlet hole 318 is formed in the center of the third square connecting plate 315, two upward half-moon-shaped arc-shaped limiting walls 316 are arranged at the left free edge and the right free edge of the second air inlet hole 318, the diameter of the second air inlet hole 318 and the distance between the two arc-shaped limiting walls 316 are equal to or larger than the diameter of the air inlet pipe 3, the two arc-shaped limiting walls 316 prevent the flap 314 from swinging left and right when being opened and closed, and the flap 314 can be movably arranged between the two arc-shaped limiting walls 316 up and down; the first square connecting plate 311, the second square connecting plate 313 and the third square connecting plate 315 are squares with equal areas, and are sequentially connected in a stacked manner. The air inlet valve 31 is closed at ordinary times, the valve 314 is opened towards the front upper part due to the fact that the pressure in the mask body 1 is lower than the external pressure during inspiration, and the valve 314 is closed due to the fact that the valve 314 automatically returns due to elasticity and the pressure in the mask is higher than the pressure in the air inlet pipe 3 and the external pressure during expiration, and therefore air in the air inlet pipe 3 flows in a single direction.

As shown in fig. 7 to 9, in an embodiment, the valve opening 51 of the gas outlet/pressure increasing valve 5 is a circular table surface protruding toward the mask body 1, an outer edge of the valve opening 51 is connected to the gas outlet pipe 4 and an inner wall of the header pipe 2 for limiting the valve piece 52 from being inserted into the header pipe 2, a first central hole 511 is formed in the center of the valve opening 51, a plurality of first support strips 512 having the same radial radius are arranged at an outer periphery of the first central hole 511 of the valve opening 51, and two adjacent first support strips 512 are hollowed out to facilitate gas discharge; the valve sheet 52 is a conical surface structure matched with the shape of the valve opening 51, the radius of the valve sheet 52 is larger than that of the first supporting strip 512, the valve sheet 52 covers the valve opening 51 to seal the valve opening 51 in an initial state, and a rubber pad 521 is arranged on the contact surface of the valve sheet 52 and the valve opening 51 to increase the tightness and prevent air leakage; the tip of the valve plate 52 is provided with a central rod 522 extending forwards, the central rod 522 passing through the first central hole 511 into the manifold 2.

In one embodiment, the valve openings 51 may also be arranged as a mesh-like structure (not shown) within the radius coverage of the valve sheet 52.

In one embodiment, the tip of the central rod 522 is provided with a barb structure that passes through the first central hole 511 to prevent the central rod 522 from being dislocated into the outlet tube 4 and not returning during opening and closing activities.

In an embodiment, the central shaft 53 is an axial center of the spring 54, preferably, the central shaft 53 includes a proximal section 531 and a distal section 532 that are fixedly connected to each other, an end of the proximal section 531 is connected to the valve plate 52, the proximal section 531 of the central shaft 53 has a streamline or "bullet" shaped structure (preferred) or a conical, truncated cone or cylindrical structure (alternative, not shown) with a diameter that gradually increases from proximal to distal, the proximal section 531 of the central shaft 53 has a cross-shaped, m-shaped or other radial shape, and the rest is hollow; this ensures that the axial center of the spring 54 is aligned with the axial center of the central shaft 53, and that the outlet tube 4 has a sufficient space for gas to be discharged, while limiting the excessive compression of the spring 54. The distal section 532 of the central shaft 53 has a rod-like structure, and the end thereof passes through the pressure adjustment knob 55 and is flush with the distal surface thereof or slightly exposed from the head end thereof; the spring 54 is disposed around the outer circumference of the center shaft 53.

In other embodiments, as shown in fig. 9, the central shaft 53a may be a rod-like structure having a uniform shape throughout, which is the same as the shape of the distal segment 532 in fig. 7 or 8.

The shape of the spring 54 corresponds to the shape of the center shaft 53, and the diameter of the spring 54 is slightly larger than the diameter of the center shaft 53, thereby preventing friction with the center shaft 53. As shown in fig. 1, 7 and 8, the spring 54 is mostly centered around the proximal portion 531 of the central shaft 53 and is mostly centered around the distal portion 532 of the central shaft 53. The spring 54 has both ends in contact with the valve plate 52 and the pressure adjusting knob 55, respectively (except when switching to a non-pressurized normal mask). The proximal section of the spring 54 is contoured to match the shape of the proximal section 531 of the central shaft 53, and the diameter of the free portion of the distal section of the spring 54 is greater than the diameter of the distal surface of the proximal section of the central shaft 53. In another embodiment, as shown in fig. 9, if the central shaft 53a is a rod-shaped structure with a uniform shape throughout the length, the shape of the distal segment 532 of the central shaft 53 is the same, the central shaft 53a does not need to be hollowed out, and the spring 54a can be football-shaped, so that the inner surface of the supporting frame 7 and the inner surface of the circular surface of the pressure adjusting button 55 do not need to be provided with the inner protrusions 555, 555 a; the spring 54a may also be arranged in a conical, truncated cone or cylindrical shape (not shown).

The length of the spring 54, 54a in the non-stressed state is slightly shorter than the distance between the valve plate 52 and the inner side surface of the pressure regulating button 55, 55a (preferably), so as to ensure that the spring 54, 54a is converted into a common non-pressurized common mask for use when completely released, and the spring is used for transition before the mask is stopped.

In another embodiment, the length of the spring 54, 54a in the non-stressed state may be set to be greater than or equal to the distance between the valve plate 52 and the inner side surface of the pressure adjusting button 55, 55a, and when the mask is not used as a pressurized mask but is changed to a normal non-pressurized mask, the spring 54, 54a may be taken out (selected).

Specifically, the proximal segment 531 of the central shaft 53, 53a and the valve plate 52 are fixedly connected into a whole by a screw, a snap, or the like.

The near section of the gas outlet pipe 4 is provided with an expanding pipe section 41 with a pipe diameter expanding into a horn shape or a round table shape with an even increasing shape from the valve opening to the outside, the near end of the expanding pipe section 41 and the header pipe 2 are integrated into a streamline structure, the length of the expanding pipe section 41 is larger than the moving distance of the valve sheet 52 and the central shafts 53 and 53a in the inner section of the gas outlet pipe 4, so that enough space is provided around the valve sheet 52 to allow gas to pass through and the valve sheet 52 cannot block the gas outlet pipe when the valve sheet 52 is opened.

In another embodiment, as shown in fig. 7, the automatic pressurizing respiratory mask further comprises a support frame 7 formed by radial support bars 71, the diameter of the radial support bar 71 is larger than the outer diameter of the outlet tube 4 and smaller than or equal to the outer diameter of the pressure adjusting knob 55a, a plurality of spacing grooves 45 arranged at intervals are formed on the pipe wall of the far section of the air outlet pipe 4, the number of the radial support bars 81 is consistent with that of the spacing grooves 45, the plurality of radial support bars 71 are correspondingly embedded into the plurality of spacing grooves 45 one by one, the center of the supporting frame 7 is provided with a second central hole 72 for the central shaft far section 532 to pass through, the tail end of the central shaft 53 far section 532 passes through, the inner side surface of the support frame 7 is provided with an inner protrusion 555a at a position which takes the axis as the center of a circle and is smaller than the diameter of the distal end surface of the spring 54, to fix the distal circumference of the spring 54 outside the inner protrusion 555a to be coaxial with the central shaft 53 and the outlet tube 4; the pressure adjusting button 55a is of an annular structure, the inner diameter of the pressure adjusting button 55a is equal to the outer diameter of the far section of the outlet pipe 4, a first internal thread 557 is arranged on the inner wall of the pressure adjusting button 55a, a first external thread 46 is arranged on the outer wall of the far section of the outlet pipe 4, the length of the first external thread 46 on the far section of the outlet pipe 4 is greater than the length of the first internal thread 557 on the inner wall of the pressure adjusting button 55a, the first internal thread 557 on the inner wall of the pressure adjusting button 55a is connected with the first external thread 46 on the outer wall of the far section of the outlet pipe 4, the periphery of the pressure adjusting button 55a is of a gear-shaped structure, and an arrow which points outward in direction from the circumference and is used for indicating a rotation angle is arranged on the outer side surface of one tooth of the gear-shaped structure; or one of the teeth may be provided relatively sharply as an arrow to indicate the angle of rotation.

In another embodiment, if the diameter of the circumference of the distal end surface of the spring 54 is large enough to be close to the diameter of the proximal end surface of the pressure adjustment knob 55, then there is no need for an internal protrusion 555 or a recess on the inner side surface of the support 7.

The support frame 7 can be composed of 2 support bars 71 (in a cross shape), also can be composed of 3 support bars or 4 support bars (in a shape of Chinese character 'mi'), also can be composed of any number, correspondingly, the number of the inter-grooves 45 is 4, 6, 8 or corresponding any number.

As shown in fig. 8, the pressure adjusting button 55 is formed by fusing a circular surface and a section of circular tube 551, the circular surface is located at the distal end of the circular tube 551 and is fused with the distal end of the circular tube 551, the outer diameter of the circular tube 551 is equal to the inner diameter of the distal section 532 of the outlet tube 4, the inner wall of the distal section 532 of the outlet tube 4 is provided with a second internal thread 44, the outer wall of the circular tube 551 is provided with a second external thread 556, the length of the second internal thread 44 in the outlet tube 4 is greater than the length of the circular tube 551 and the second external thread 556, the pressure adjusting button 55 is connected with the second internal thread 44 of the outlet tube 4 through the second external thread 556, and the center of the circular surface of the pressure adjusting button 55 is provided with a third central hole 553 through which the distal section 532 of the central shaft 53 passes; a plurality of second supporting bars 552 with the same radial radius are arranged on the periphery of the third central hole 553 on the circular surface, the number of the second supporting bars 552 is even, and the two adjacent second supporting bars 552 are hollowed out to facilitate the gas exhaust; two sheet-shaped outer protrusions 554 are arranged on any two second supporting bars 552 on the same diameter on the outer side surface of the circular surface, the two sheet-shaped outer protrusions 554 are extensions of the corresponding two second supporting bars 552, the sheet-shaped outer protrusions 554 are used for exerting the acting point of the pressure adjusting knob 55 for rotating by an operator, and an arrow which points to the outside of the circumference and is used for indicating the rotating angle is arranged on the far side surface of the circular tube 551 where one sheet-shaped outer protrusion 554 is located; an inner protrusion 555 is arranged on the inner side surface of the circular surface by taking the axis as the center of a circle and at a position smaller than the diameter of the far end of the spring 54, so that the circumference of the far end of the spring 54 is fixed between the inner protrusion 555 and the circular tube 551 to be coaxial with the central shaft 53 and the air outlet pipe 4, and the stability of the spring 54 is improved.

In another embodiment, the inner protrusions 555 may also be provided as grooves to fix the spring 54 coaxially with the central shaft 53 and the outlet tube 4.

In another embodiment, if the diameter of the circumference of the distal surface of the spring 54 is large enough to be close to the diameter of the proximal surface of the pressure adjustment knob 55, there is no need for an internal protrusion 555 or recess on the second support bar 552 on the inner side of the circular surface.

In another embodiment, if the pressure adjusting knob 55 is screwed too deep into the outlet pipe 4 and the plate-shaped outer protrusion 554 enters the end of the outlet pipe 4 too deep to be exposed to the outside and to adjust the pressure adjusting knob 55, a structure (not shown) like a "sigma" or "nn" may be inserted between the second supporting bars 552 of the pressure adjusting knob 55 to rotate the pressure adjusting knob 55.

In another embodiment, the circular surface of the pressure adjusting button 55 may be provided with only one second supporting bar 552 having a through diameter at the periphery of the third central hole 553, the second supporting bar 552 is provided with two plate-shaped outer protrusions 554, the two plate-shaped outer protrusions 554 are extensions of the two second supporting bars 552 and are used for rotating the pressure adjusting button 55, and the other portion of the circular surface is provided with a sieve-hole-like structure (not shown).

In an embodiment, a flap barrier 6 is disposed between the flap 314 and the outlet pressure increasing valve 5, the flap barrier 6 includes a main body 61, a stalk 62 and a grid bottom 63, the main body 61 is a barrier-like structure, the main body 61 is connected to the grid bottom 63 through the stalk 62, a linear gap 317 is left between a front side of the third square connecting plate 315 and a front side of the second square connecting plate 313, and the grid bottom 63 is clamped in the linear gap 317 between the second square connecting plate 313 and the third square connecting plate 315. The body portion 61 extends into the inlet port above the flap 314 to prevent the flap 314 from wearing out when opened by contact with the central rod 522 of the valve plate 52 or the valve port 51 of the outlet booster valve 5 protruding into the manifold 2.

As shown in fig. 5, in the present embodiment, the main body portion 61 has a circular structure. As shown in fig. 6, in another embodiment, the main body 61a may have a shape of a Chinese character 'shan'.

In another embodiment, if the position of the inlet valve 31 is low enough or the position of the valve opening 51 of the outlet/inlet/pressure valve 5 is before enough, and the flap 314 is opened without contacting the valve sheet 51 of the outlet/pressure valve 5, the flap barrier 6 may not be provided.

In one embodiment, the outer side wall of the distal section of the outlet tube 4 is provided with linear scales 42 from far to near for marking the compression degree of the springs 54, 54 a; the linear scale 42 is a point "0" from the distal end surface when the springs 54 and 54a are relaxed, and displays the compression degree of the springs 54 and 54a to the proximal end and the distance of the springs 54 and 54a to the distal end; the outer peripheral wall of the distal end of the air outlet tube 4 is provided with an annular scale 43 for displaying the rotation angle of the pressure adjusting buttons 55, 55 a.

For convenience of use, the tension of the springs 54 and 54a can be preset, for example, when the spring 54 and 54a is used in a flat area, the tension at the beginning of the linear scale 42 is set to be flat pressure, and the spring 54 and 54a can be increased by 1cmH after being compressed by 1 scale₂O-pressure, or 1 rotation of the pressure-adjusting knob 55, 55a by 1cmH₂O pressure, and the like. When the tension adjusting device is used in an plateau area, the tension of the springs 54 and 54a at the starting position of the linear scale 42 is set to be 1 atmosphere, so that the tension adjusting device does not need to be adjusted temporarily before use, and the pressure can be adjusted according to the altitude. The spring tension used in plain areas and the spring tension settings used in plateau areas may be different.

In an embodiment, the automatic pressurizing respirator further includes a strap 8, the strap 8 is composed of two straps, as shown in fig. 3, first strap connecting portions 14 are respectively disposed on two sides of the lower portion of the hard portion 13, a second strap connecting portion 15 is disposed at the upper end of the hard portion 13, as shown in fig. 4, the second strap connecting portion 15 includes a transverse portion 151 and a longitudinal portion 152, the upper end of the longitudinal portion 152 is perpendicular to the middle of the transverse portion 151 and is movably connected with the middle of the transverse portion 151 in a snap fit manner to form a "T" shaped structure, and the lower end of the longitudinal portion 152 is movably connected with the upper end of the hard portion 13 in a snap fit manner; the transverse part 151 is in contact with the forehead of the human body, and two parallel downward linear holes 153 are respectively arranged at two ends of the transverse part 151; the strap 8 is connected with the first strap connecting portion 14 through setting up spherical connector 81, the strap 8 passes the linear hole 153 of second strap connecting portion 15, the bonding of turning over after the tensioning can with the fixed cladding of automatic pressure boost respirator is in human mouth nose department.

When in use, the transverse part 151 faces the forehead of the human body and contacts with the forehead, and an elastic material (such as a rubber pad or a sponge pad) is arranged on one side of the transverse part 151 contacting with the forehead to prevent the forehead from being pressed.

As shown in fig. 10, in an embodiment of the binding band 8, the binding band 8 is a flat band-shaped structure, 2 pieces of the binding band are made of elastic material, the head sections at the two ends of the binding band are provided with hook-and-loop nylon connectors 82 on the same side, and after being folded, the two ends can be adhered to each other, and after being tensioned to a proper position, the binding band can be folded back to fix the mask body 1. Two spherical connectors 81 can be provided, the spherical connector 81 is a rigid structure, the head end of the spherical connector 81 is provided with a small ball 811, the spherical connector is connected with the connecting bottom 813 into a whole through the neck 812, and the connecting bottom 813 is provided with a strip-shaped hole 814. One end of a single bridle 8 passes through the strip-shaped hole 814 of the spherical connector 81 to be connected with the spherical connector 81, and can also be fixedly connected with the spherical connector 81; the spherical connector 81 is used for being fixedly connected with the first strap connecting portion 14, and the other end of the single strap 8 penetrates through the linear hole 153 of the second strap connecting portion 15 and is connected with the second strap connecting portion 15. One or two parallel connecting bands are arranged in the middle of the back of the head of the two bridles 8, and as shown in fig. 11, the two bridles 8 can also be fixed in a crossed manner.

As shown in fig. 3, the first strap connecting portion 14 is a square-like structure with an opening facing forward, and is used for accommodating a small ball 811 of the ball connector 81. The front edge of the cube-like structure is in a double arc shape. A bottom crack 141 is formed outwards on the bottom surface of the cube-like structure, the bottom crack 141 is U-shaped or square, an outer side surface crack 142 is formed in the outer side surface of the cube-like structure, the outer side surface crack 142 and the bottom crack 141 are continued and mostly have the same width, only the front small distance is relatively narrow, the narrowest distance between the outer side surface crack 142 and the bottom crack 141 is slightly larger than the diameter of the neck 812 of the spherical connector 81, and the neck 812 of the spherical connector 81 can conveniently pass through; but is smaller than the diameter of ball 811 of ball connector 81 to limit and reduce the escape of ball 811 of ball connector 81 in a square-like configuration. The small ball 811 is placed in a similar cube of the first strap connecting portion 14 to be connected to the first strap connecting portion 14.

In other embodiments, the first strap connecting portion 14 may be configured to have the same or similar structure as the linear hole 153 for the strap 7 to pass through directly to fix the mask body 1.

In other embodiments, for convenience of use, the two straps 8 can be fixed to be set to be large, medium and small in size, except that the two spherical connectors 81 and the hook-and-loop nylon connectors 82 are fixedly connected into a whole in advance, the other two hook-and-loop nylon connectors 82 are also fixedly connected into a whole with other hooks (not shown) in advance, when the two spherical connectors 81 are connected to the first strap connecting portion 14 in use, the other two hooks (not shown) of the straps 8 are directly hooked in the linear holes 153 of the second strap connecting portion 15, so that the automatic pressurizing respirator can be rapidly fixed to the head and face of a human body.

In this embodiment, the pipe diameters and the interface specifications of the air inlet pipe 3 and the air outlet pipe 4 are consistent with those of the existing masks used clinically, so that the automatic pressurizing breathing mask can be connected with an artificial air bag or other breathing auxiliary apparatuses at any time after being invalid.

Except for the second square connecting plate 313 of the air inlet valve 31, the springs 54 and 54a in the air outlet pressure increasing valve 5 and the belt 8, the rest parts are preferably made of transparent materials.

In other embodiments, if the patient has insufficient breathing power, an artificial respiration air bag may be connected to the air inlet tube 3 for artificial assisted ventilation, or a noninvasive ventilator may be connected for assisted ventilation, and then the automatic pressurizing respiratory mask has a Continuous Positive Airway Pressure (CPAP) function similar to a ventilator.

In other embodiments, a filter may also be provided on the intake pipe 3 to purify the intake air.

In other embodiments, a humidification device may be further disposed on the air inlet pipe 3 to humidify the inhaled air.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An automatic pressurizing breathing mask is characterized by comprising a mask body, a header pipe, an air inlet valve, an oxygen inlet, an air outlet pipe and an air outlet pressurizing valve, wherein the mask body is used for coating the mouth and the nose of the face of a human body; the oxygen inlet is connected with the mask body; the near end of the air inlet pipe and the near end of the air outlet pipe are fused into a main pipe, and an air inlet and an air outlet are arranged at the front lower part of the mask body and connected with the main pipe; the air inlet valve is arranged between the air inlet pipe and the header pipe, and the air inlet valve is a one-way valve body which conducts flow from the air inlet pipe to the header pipe and the mask body in a one-way mode; the air outlet booster valve is arranged in the air outlet pipe and comprises a valve opening, a valve sheet, a central shaft, a spring and a pressure adjusting button, the valve opening is arranged between the air outlet pipe and the header pipe, the valve sheet is positioned on the far side face of the valve opening, the spring surrounds the central shaft, the near end of the spring is abutted against the valve sheet, the valve sheet is temporarily abutted against and sealed by the pressure provided by the spring, the valve opening is arranged at the far end of the air outlet pipe in an axial displacement mode, and the far end of the spring can be adjusted in an axial displacement mode through the pressure adjusting button to adjust the tension of the spring and is temporarily positioned in the air outlet pipe.

2. The automatic supercharging breathing mask according to claim 1, wherein said mask body comprises a hard body portion, an elastic portion and a soft body portion, which are fixedly connected and integrated together; the hard body part is of a turtle-back-shaped convex structure, and the free edge of the hard body part is generally consistent with the convex-concave structure of the human face; the oxygen inlet is arranged on one side of the hard body part, is a tubular bulge and is provided with a lacing and a cover body, the lacing is respectively connected with the oxygen inlet and the cover body, and the cover body is used for temporarily closing the oxygen inlet; the air inlet and outlet is arranged at the front lower part of the hard body part; the elastic part is an extension of the free edge of the hard part, and the free edge of the elastic part is consistent with the convex-concave structure of the human face, turns inwards and becomes thinner gradually after contacting the human face; the soft body portion has originated elastic component and human facial contact surface outer fringe, just the free reason of soft body portion inwards overturns the free reason that covers the elastic component, and the area of coverage area is greater than the area of elastic component and facial contact surface, finally the face guard body and human facial contact surface follow human facial convex-concave shape looks adaptation.

3. The automatic supercharging breathing mask according to claim 1, wherein said intake valve is formed by connecting three layers: the far layer of the air inlet valve is provided with a first square connecting plate, the center of the air inlet valve is provided with a circular first air inlet hole, the diameter of the first air inlet hole is smaller than that of the air inlet pipe, and the air inlet pipe is connected to the far side of the first square connecting plate; the middle layer of the air inlet valve is provided with a second square connecting plate which is an elastic diaphragm, the center of the elastic diaphragm is cut into an omega-shaped structure to form a valve, the diameter of the valve is larger than that of the first air inlet hole, and the bottom of the omega-shaped structure is positioned on one side in front; a third square connecting plate is arranged on the layer close to the air inlet valve, a circular second air inlet hole is formed in the center of the third square connecting plate, two upward half-moon-shaped arc limiting walls are arranged on the left free edge and the right free edge of the second air inlet hole, and the diameter of the second air inlet hole and the distance between the two arc limiting walls are equal to or larger than the diameter of the air inlet pipe; the first square connecting plate, the second square connecting plate and the third square connecting plate are squares with equal areas and are sequentially connected in a stacking mode.

4. The automatic supercharging respirator of claim 1, wherein the valve port of the air outlet supercharging valve is a circular table surface protruding towards the mask body, the outer edge of the valve port is connected with the air outlet pipe and the inner wall of the header pipe, a first central hole is formed in the center of the valve port, a plurality of first supporting strips with the same radius are arranged on the valve port at the periphery of the first central hole in a radial manner, and the adjacent two first supporting strips are arranged in a hollow manner; the valve sheet is of a conical surface structure matched with the valve opening in shape, the radius of the valve sheet is larger than that of the first supporting strip, the valve sheet covers the valve opening, and a rubber pad is arranged on the contact surface of the valve sheet and the valve opening; the tip end of the valve plate is provided with a central rod extending forwards, and the central rod penetrates through the first central hole to enter the main pipe; the central shaft is the axis of the spring, and the end part of the near section of the central shaft is connected with the valve plate; the tail end of the far section of the central shaft passes through the pressure adjusting button and is flush with the far side surface of the pressure adjusting button or slightly exposes out of the head end; the spring is arranged around the periphery of the central shaft.

5. The automatic pressurizing respiratory mask as claimed in claim 1, wherein the proximal segment of the outlet pipe has an expanding pipe segment with a pipe diameter expanding like a trumpet shape or a round platform shape uniformly increasing from the valve opening to the outside, the proximal end of the expanding pipe segment and the header pipe are integrated into a streamline structure, and the length of the expanding pipe segment is longer than the distance of the valve disk and the central shaft moving in the inner segment of the outlet pipe.

6. The automatic supercharging respirator of claim 1, further comprising a support frame formed by radial support bars, wherein the diameter of each radial support bar is larger than the outer diameter of the outlet pipe and smaller than or equal to the outer diameter of the pressure adjusting button, a plurality of spacing grooves are formed in the pipe wall of the distal section of the outlet pipe, the number of the radial support bars is consistent with the number of the spacing grooves, the radial support bars are embedded into the spacing grooves in a one-to-one correspondence manner, and a second central hole for the distal section of the central shaft to pass through is formed in the center of the support frame; the pressure adjusting button is of an annular structure, the inner diameter of the pressure adjusting button is equal to the outer diameter of the far section of the air outlet pipe, a first internal thread is arranged on the inner wall of the pressure adjusting button, a first external thread is arranged on the outer wall of the far section of the air outlet pipe, the length of the first external thread of the far section of the air outlet pipe is greater than that of the first internal thread of the inner wall of the pressure adjusting button, and the first internal thread of the inner wall of the pressure adjusting button is connected with the first external thread of the far section of the air outlet pipe; the periphery of the pressure adjusting button is in a gear shape, and an arrow which points to the outside of the circumference in the direction and is used for indicating a rotation angle is arranged on the outer side surface of one tooth of the gear structure; or one of the teeth may be provided relatively sharply as an arrow to indicate the angle of rotation.

7. The automatic pressurizing respiratory mask as claimed in claim 1, wherein the pressure adjusting button is formed by fusing a circular surface and a section of circular tube, the circular surface is located at the distal end of the circular tube and is fused with the circular tube, the outer diameter of the circular tube is equal to the inner diameter of the distal section of the outlet tube, the inner wall of the distal section of the outlet tube is provided with a second internal thread, the outer wall of the circular tube is provided with a second external thread, the length of the second internal thread in the outlet tube is greater than the length of the circular tube and the second external thread, the pressure adjusting button is connected with the second internal thread of the outlet tube through the second external thread, and the center of the circular surface of the pressure adjusting button is provided with a third central hole for the distal section of the central shaft to pass through; a plurality of second support bars with the same radial radius are arranged on the periphery of the third central hole on the circular surface, the number of the second support bars is even, and the two adjacent second support bars are hollowed out; the lateral surface of circular face is provided with two slice outer archs, two with arbitrary two second support bars on same diameter the outer arch of slice is corresponding two the extension of second support bar is used for rotatory pressure adjustment knob, and one of them be provided with the outside arrow head that is used for instructing turned angle of direction pointing circumference on the pipe distal surface at the outer arch place of slice.

8. The automatic supercharging breathing mask according to claim 3, wherein a flap barrier is disposed between the flap and the outlet supercharging valve, the flap barrier includes a main body portion, a stalk portion and a grid bottom portion, the main body portion is of a barrier-like structure, the main body portion is connected to the grid bottom portion through the stalk portion, a linear gap is left between a front side of the third square connecting plate and a front side of the second square connecting plate, and the grid bottom portion is clamped in the linear gap between the second square connecting plate and the third square connecting plate.

9. The automatic pressurizing respiratory mask according to claim 1, 6 or 7, wherein the outer side wall of the far section of the outlet pipe is provided with linear scales from far to near, and the outer peripheral wall of the far end of the outlet pipe is provided with annular scales; the linear scale and the annular scale are respectively used for displaying the compression degree of the spring and the rotating angle of the pressure adjusting button.

10. The automatic supercharging breathing mask according to claim 2, wherein the automatic supercharging breathing mask further comprises two straps, the two straps are respectively provided with a first strap connecting portion at each of two sides of the lower portion of the hard body portion, the upper end of the hard body portion is provided with a second strap connecting portion, the second strap connecting portion comprises a transverse portion and a longitudinal portion, the upper end of the longitudinal portion is perpendicular to the middle of the transverse portion and movably connected with the middle of the transverse portion in a T-shaped manner through a buckle, and the lower end of the longitudinal portion is movably connected with the upper end of the hard body portion through a buckle; the transverse part is contacted with the forehead part of the human body, and two ends of the transverse part are respectively provided with a linear hole which is parallel and downward; the strap is connected with the first strap connecting portion through setting up spherical connector, the strap passes the linear hole of second strap connecting portion, and the bonding of turning over after the tensioning can with the fixed cladding of automatic pressure boost respirator is in human facial oronasal department.

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