A breathing valve and a breathing treatment device

Abstract

The present invention discloses a breathing valve and a breathing treatment device, which includes a breathing valve body; and a filter element, which is arranged inside the breathing valve body or at the outlet of the breathing valve body close to the patient end; the filter element is used to filter the inhaled airflow or the exhaled airflow. By arranging a filter element inside the breathing valve body or at the outlet close to the patient end, the breathing valve has a filtering function without additionally configuring a filter. While ensuring that the breathing valve has a filtering function, it also simplifies the structure of the breathing valve, facilitates the use of the breathing valve, and avoids the direct discharge of the patient's exhaled airflow, which pollutes the oxygen source and indoor air and causes cross infection between medical staff and other patients.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a breathing valve and a breathing treatment device. Background Art

[0002] The existing breathing valve is mainly used in conjunction with a ventilator. The ventilator controls the opening or closing of the valve plate inside the breathing valve to achieve switching between exhalation and inhalation, which has an auxiliary therapeutic effect.

[0003] When using breathing valve products, the gas exhaled by the patient is not filtered and is directly discharged into the air, which is very likely to pollute the oxygen source and indoor air, causing cross-infection between medical staff and other patients.

[0004] It can be seen that the existing technology still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a breathing valve and a respiratory therapy device, aiming to improve the problem in the prior art that the breathing valve directly discharges the patient's exhaled gas without filtering and pollutes the oxygen source or air.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a breathing valve, comprising:

[0007] Breathing valve body;

[0008] and a filter element, which is arranged inside the breathing valve body or at the outlet of the breathing valve body close to the patient end;

[0009] The filter element is used for filtering the inspiratory airflow or the expiratory airflow.

[0010] Furthermore, the breathing valve body includes:

[0011] Air inlet connector, used to connect to oxygen source;

[0012] An intake valve body, connected to the intake joint, for guiding the intake air flow;

[0013] An outlet valve body connected to the inlet valve body and used for guiding the inlet air flow and the exhalation air flow;

[0014] A one-way valve sheet, arranged between the air inlet valve body and the air outlet valve body;

[0015] And an air outlet connector, connected to the air outlet valve body, for connecting to the patient end.

[0016] Furthermore, the one-way valve sheet includes:

[0017] A sealing portion, protruding toward the outlet valve body;

[0018] A fixing part, installed between the inlet valve body and the outlet valve body;

[0019] and a bending portion connected between the sealing portion and the fixing portion and protruding toward the intake valve body.

[0020] Furthermore, the intake valve body comprises:

[0021] A valve plate control groove is arranged at the axis of the intake valve body, the opening of which faces the one-way valve plate and is surrounded by the one-way valve plate to form a closed space;

[0022] A first air inlet cavity is arranged around the outer periphery of the valve plate control groove and is coaxial with the valve plate control groove;

[0023] A first air outlet cavity, disposed outside the first air inlet cavity;

[0024] And a second air outlet cavity is arranged outside the first air inlet cavity and is symmetrical with the first air outlet cavity.

[0025] Furthermore, the gas outlet valve body comprises:

[0026] A third air outlet cavity is disposed at the axis of the air outlet valve body and is connected to the first air outlet cavity and the second air outlet cavity;

[0027] and a second air inlet cavity, which is arranged around the outer periphery of the third air outlet cavity, is coaxial with the third air outlet cavity and is connected to the first air inlet cavity.

[0028] Furthermore, the third air outlet cavity specifically includes:

[0029] An air outlet through hole is arranged at the axis of the air outlet valve body, one end of which faces the air outlet joint and the other end of which is detachably connected to the sealing portion of the one-way valve plate;

[0030] An air outlet ring groove is arranged around the outer periphery of the air outlet through hole and opens toward the one-way valve plate;

[0031] A first air outlet side cavity is arranged on the outer wall of the second air inlet cavity, one end of which is connected to the air outlet ring groove, and the other end of which is connected to the first air outlet cavity;

[0032] And a second air outlet side cavity is arranged at the outer wall of the second air inlet cavity and is symmetrical with the first air outlet side cavity, one end of which is connected to the air outlet ring groove, and the other end of which is connected to the second air outlet cavity.

[0033] Furthermore, the outlet valve body further comprises a sampling tube, one end of which is connected to the outlet through hole, and the other end of which extends out of the second air inlet cavity, for extracting a sample of the exhaled airflow;

[0034] The air intake valve body further comprises a valve plate control pipe, one end of which is connected to the valve plate control groove and the other end of which extends outside the first air intake cavity, and is used for adjusting the pressure of the enclosed space.

[0035] Furthermore, the breathing valve also includes a double-hole hose connector;

[0036] The double-hole hose connector includes a sampling channel arranged in an L shape and connected to the sampling tube, and a pressure control channel arranged in an L shape and connected to the valve plate control tube.

[0037] Furthermore, when the filter element is disposed inside the breathing valve body;

[0038] The filter element is arranged between the outlet valve body and the outlet connector, and is used to filter the inhaled air flow and the exhaled air flow;

[0039] or,

[0040] The filter element comprises a first filter element and a second filter element; the first filter element is arranged between the air inlet connector and the air inlet valve body, and is used for filtering the inhaled air flow and protecting the oxygen source; the second filter element is arranged in the air outlet hole, and is used for filtering the exhaled air flow.

[0041] Furthermore, when the filter element is disposed at the outlet of the breathing valve body close to the patient, the filter element can be detachably connected to the outlet of the air outlet connector.

[0042] Furthermore, the filter element is configured as a filter cotton layer;

[0043] An outlet rotary joint is provided in the outlet joint, and the outlet rotary joint can rotate relative to the outlet joint;

[0044] The breathing valve further comprises a sealing cover, which is sleeved on one end of the air intake connector away from the air intake valve body and is used to seal the air intake valve body;

[0045] The air inlet connector, the air inlet valve body, the air outlet valve body and the air outlet connector are connected in sequence by ultrasonic welding.

[0046] The technical solution adopted by the present invention to solve the technical problem is as follows: a respiratory therapy device, which includes the breathing valve as described above.

[0047] Compared with the prior art, the present invention provides a breathing valve and a respiratory therapy device, which include a breathing valve body; and a filter element, which is arranged inside the breathing valve body or at the outlet of the breathing valve body close to the patient end; the filter element is used to filter the inhaled airflow or the exhaled airflow. By arranging a filter element inside the breathing valve body or at the outlet close to the patient end, the breathing valve has a filtering function without an additional filter. While ensuring that the breathing valve has a filtering function, it also simplifies the structure of the breathing valve and facilitates the use of the breathing valve, avoiding the direct discharge of the patient's exhaled airflow, polluting the oxygen source and indoor air, and causing cross infection between medical staff and other patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the three-dimensional structure of the breathing valve in the preferred embodiment of the present invention;

[0049] Figure 2 It is a schematic diagram of the three-dimensional structure of the breathing valve deformation structure in the preferred embodiment of the present invention;

[0050] Figure 3 It is a three-dimensional explosion schematic diagram of a breathing valve in a preferred embodiment of the present invention;

[0051] Figure 4 It is a three-dimensional exploded schematic diagram of the breathing valve from another perspective in the preferred embodiment of the present invention;

[0052] Figure 5 It is a schematic front view of a one-way valve sheet of a breathing valve in a preferred embodiment of the present invention;

[0053] Figure 6 The present invention Figure 5 Schematic cross-sectional view in the direction of Ⅰ-Ⅰ;

[0054] Figure 7 It is a right side schematic diagram of a breathing valve in a preferred embodiment of the present invention;

[0055] Figure 8 The present invention Figure 7 Schematic diagram of cross section in the II-II direction;

[0056] Fig. 9 It is a schematic diagram of the three-dimensional structure of the air intake valve body of the breathing valve in the preferred embodiment of the present invention;

[0057] Fig.10 It is a schematic diagram of the three-dimensional structure of the air intake valve body of the breathing valve in the preferred embodiment of the present invention from another perspective;

[0058] Fig.11 It is a schematic front view of the outlet valve body of the breathing valve in the preferred embodiment of the present invention;

[0059] Fig.12 The present invention Fig.11 A schematic cross-sectional view in the V-V direction;

[0060] Fig.13 The present invention Figure 7 Schematic cross-sectional view in the direction of III-III;

[0061] Fig.14 The present invention Figure 7 A schematic cross-sectional view in the IV-IV direction of an embodiment A;

[0062] Fig.15 The present invention Figure 7 A schematic cross-sectional view of another embodiment B in the IV-IV direction;

[0063] Fig.16 The present invention Figure 7 A schematic cross-sectional view of another embodiment C in the IV-IV direction;

[0064] Description of reference numerals:

[0065] 1. Breathing valve; 10. Breathing valve body; 20. Filter element; 11. Inlet connector; 12. Inlet valve body; 13. Outlet valve body; 14. One-way valve plate; 15. Outlet connector; 17. Double-hole hose connector; 18. Outlet rotary connector; 19. Sealing cover; 121. Valve plate control groove; 122. First inlet cavity; 123. First outlet cavity; 124. Second outlet cavity; 125. Valve plate control pipe; 126. First positioning tooth; 127. Second positioning tooth; 128. Air Flow indicator; 131, third air outlet cavity; 132, second air inlet cavity; 133, air outlet through hole; 134, air outlet ring groove; 135, first air outlet side cavity; 136, second air outlet side cavity; 137, sampling tube; 138, first positioning hole; 139, second positioning hole; 130, connecting hole; 141, sealing part; 142, fixing part; 143, bending part; 171, sampling channel; 172, pressure control channel; 21, first filter element; 22, second filter element. DETAILED DESCRIPTION

[0066] The present invention provides a breathing valve and a breathing treatment device. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0067] In modern clinical medicine, ventilators or instruments with similar functions are an effective means to artificially replace the autonomous ventilation function. They have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation, and they occupy a very important position in the field of modern medicine. A ventilator is a vital medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong the life of patients. Respiratory therapy equipment generally delivers gas to patients through a gas delivery tube (the respiratory therapy equipment will be directly connected to the gas delivery tube, or indirectly connected to the gas delivery tube through a humidifier or similar auxiliary equipment), and a breathing valve is generally configured on the gas delivery tube. The breathing valve is mainly used in conjunction with a ventilator. The ventilator controls the opening or closing of the internal valve of the breathing valve, thereby realizing the switching between exhalation and inhalation, which has the effect of auxiliary treatment. However, during the use of the breathing valve product, the gas exhaled by the patient is not filtered and is directly discharged into the air, which is very likely to pollute the oxygen source and indoor air, causing cross infection between medical staff and other patients. In addition, some respiratory therapy devices often configure additional filters for the breathing valves to address the problem that the breathing valves do not have filtering capabilities. However, this results in a complex structure of the breathing valves during use, inconvenient installation, and increased patient treatment costs.

[0068] Based on the above technical problems, the present invention provides a breathing valve and a respiratory therapy device. By arranging a filter element inside the breathing valve body of the breathing valve or at the outlet close to the patient end, the breathing valve has a filtering function without an additional filter. Compared with the combination of a breathing valve and a filter in the prior art, while ensuring that the breathing valve has a filtering function, it also simplifies the structure of the breathing valve and facilitates the use of the breathing valve, avoiding the direct discharge of the patient's exhaled airflow, polluting the oxygen source and indoor air, and causing cross infection between medical staff and other patients. For details, please refer to the following embodiments.

[0069] Please refer to Figures 1 to 4 In the first embodiment of the present invention, a breathing valve 1 is provided, which includes a breathing valve body 10 and a filter element 20. The filter element 20 is arranged inside the breathing valve body 10 to filter the inhaled airflow or the expiratory airflow; or, the filter element 20 is arranged at the outlet of the breathing valve body 10 close to the patient end to filter the inhaled airflow or the expiratory airflow.

[0070] It can be understood that by arranging a filter element 20 inside the breathing valve body 10 of the breathing valve 1 or at the outlet near the patient end, the breathing valve 1 can have a filtering function without an additional filter. Compared with the combination of the breathing valve 1 plus the filter in the prior art, while ensuring that the breathing valve 1 has a filtering function, it also simplifies the structure of the breathing valve 1 and facilitates the use of the breathing valve 1, avoiding the direct discharge of the airflow exhaled by the patient, polluting the oxygen source and indoor air, and causing cross infection between medical staff and other patients.

[0071] In some preferred real-time methods, the breathing valve body 10 includes an air inlet connector 11, an air inlet valve body 12, a one-way valve sheet 14, an air outlet valve body 13 and an air outlet connector 15; the air inlet connector 11 is used to connect an oxygen source; the air inlet valve body 12 is connected to the air inlet connector 11 for guiding the intake air flow; the air outlet valve body 13 is connected to the air inlet valve body 12 for guiding the intake air flow and the exhalation air flow; the one-way valve sheet 14 is arranged between the air inlet valve body 12 and the air outlet valve body 13 for controlling whether to discharge the exhalation air flow; the air outlet connector 15 is connected to the air outlet valve body 13 for connecting to the patient end.

[0072] Furthermore, the air inlet connector 11 and the air outlet connector 15 are arranged in a Y-shape along the axial cross-section.

[0073] Please refer to further Figure 5 and Figure 8 In some embodiments, the one-way valve sheet 14 includes a sealing portion 141, a fixing portion 142 and a bending portion 143; the sealing portion 141 is protruded toward the outlet valve body 13, and is used to seal the outlet connector 15, thereby controlling the exhalation airflow; the fixing portion 142 is installed between the inlet valve body 12 and the outlet valve body 13; the bending portion 143 is connected between the sealing portion 141 and the fixing portion 142, and is protruded toward the inlet valve body 12.

[0074] Furthermore, the sealing portion 141, the fixing portion 142 and the bending portion 143 are integrally formed; specifically, the one-way valve sheet 14 is fixed between the air inlet valve body 12 and the air outlet valve body 13, and the fixing portion 142 is installed between the air inlet valve body 12 and the air outlet valve body 13; the bending portion 143 is configured to be U-shaped, and the thickness of the bending portion 143 is less than the thickness of the fixing portion 142 and the sealing portion 141.

[0075] Please refer to further Fig. 9 and Fig.10In some embodiments, the intake valve body 12 includes a valve plate control groove 121 and a first intake cavity 122; the valve plate control groove 121 is arranged at the axis of the intake valve body 12, and the opening is toward the one-way valve plate 14, and the one-way valve plate 14 is surrounded by a closed space; the first intake cavity 122 is arranged around the outer periphery of the valve plate control groove 121, and is coaxially arranged with the valve plate control groove 121.

[0076] In some other preferred embodiments, the air inlet valve body 12 further includes a first air outlet cavity 123 and a second air outlet cavity 124 , and the first air outlet cavity 123 is disposed outside the first air inlet cavity 122 and is symmetrically disposed with respect to the first air outlet cavity 124 .

[0077] Please refer to further Fig.11 and Fig.12 In some embodiments, the air outlet valve body 13 includes a third air outlet cavity 131 and a second air inlet cavity 132, wherein the third air outlet cavity 131 is arranged at the axis of the air outlet valve body 13 and is connected to the first air outlet cavity 123 and the second air outlet cavity 124; the second air inlet cavity 132 is arranged around the outer periphery of the third air outlet cavity 131, is coaxial with the third air outlet cavity 131, and is connected to the first air inlet cavity 122.

[0078] In some preferred real-time methods, when the filter element is installed inside the breathing valve body; specifically, the filter element is arranged between the outlet valve body and the outlet connector to filter the inhaled air flow and the exhaled air flow.

[0079] It can be understood that when the patient inhales, the oxygen in the oxygen source first passes through the air inlet connector 11, then reaches the air inlet valve body 12, then enters the air outlet valve body 13 through the first air inlet cavity 122 on the air inlet valve body 12, and then enters the patient end through the filter element 20 and the air outlet connector 15; the valve plate control groove 121 and the one-way valve plate 14 are enclosed to form a closed space, and then the position of the sealing part 141 relative to the air outlet valve body 13 is controlled by controlling the pressure value in the closed space. Further, the pressure value of the closed space can be fixed or variable; for example, when the patient inhales, the pressure value of the closed space is increased, and the sealing part 141 is pressed against the air outlet valve body 13; when the patient exhales, the pressure value of the closed space is reduced, so that the sealing part 141 is separated from the air outlet valve body 13, and then the patient's exhaled air flow is discharged through the air outlet valve body 13.

[0080] That is to say, the patient's inhaled air flow is in turn inhaled through the air inlet connector 11, the first air inlet cavity 122, the second air inlet cavity 132, the filter element 20 and the air outlet connector 15; the patient's expiratory air flow is in turn discharged through the air outlet connector 15, the filter element 20, the third air outlet cavity 131, the second air outlet cavity 124 and the first air outlet cavity 123.

[0081] Furthermore, the third air outlet cavity 131 specifically includes an air outlet through hole 133, an air outlet annular groove 134, a first air outlet side cavity 135 and a second air outlet side cavity 136; the air outlet through hole 133 is arranged at the axis of the air outlet valve body 13, one end of which faces the air outlet joint 15, and the other end is detachably connected to the sealing portion 141 of the one-way valve plate 14; the air outlet annular groove 134 is arranged on the outer periphery of the air outlet through hole 133, and its opening faces the one-way valve plate 14; the first air outlet side cavity 135 is arranged on the outer wall of the second air inlet cavity 132, one end of which faces the air outlet joint 15, and the other end of which faces the sealing portion 141 of the one-way valve plate 14. One end of the second air outlet side cavity 136 is connected to the air outlet ring groove 134, and the other end is connected to the first air outlet cavity 123; the second air outlet side cavity 136 is arranged at the outer wall of the second air inlet cavity 132, and is symmetrical with the first air outlet side cavity 135, one end of which is connected to the air outlet ring groove 134, and the other end is connected to the second air outlet cavity 124; further, the air outlet ring groove 134 connects the first air outlet side cavity 135 and the second air outlet side cavity 136 through a connecting hole 130; further, two connecting holes 130 are provided, and pass through the second air inlet cavity 132.

[0082] Please refer to further Fig.13 and Fig.14 Specifically, the exhaled air flow is discharged through the outlet connector 15, the filter element 20, the outlet hole 133, the outlet annular groove 134, the first outlet side cavity 135 and the first outlet cavity 123 in sequence; and / or, the exhaled air flow is discharged through the outlet connector 15, the filter element 20, the outlet hole 133, the outlet annular groove 134, the second outlet side cavity 136 and the second outlet cavity 124 in sequence. It can be understood that when inhaling, the sealing portion 141 fits with the end of the outlet hole 133, separating the outlet annular groove 134 and the outlet hole 133, so as to prevent the patient from inhaling the gas outside the breathing valve 1 from the outlet hole 133. When exhaling, the exhaled gas pushes the sealing portion 141 away from the end of the outlet hole 133, and the outlet annular groove 134 and the outlet hole 133 are connected, so that the exhaled gas is discharged outside the breathing valve 1.

[0083] Please continue to refer to Figure 8In some preferred embodiments, the outlet valve body 13 also includes a sampling tube 137, one end of which is connected to the outlet hole 133, and the other end extends to the outside of the second air inlet cavity 132, for extracting samples of the exhaled airflow; the air inlet valve body 12 also includes a valve plate control tube 125, one end of which is connected to the valve plate control groove 121, and the other end extends to the outside of the first air inlet cavity 122, for adjusting the pressure of the enclosed space.

[0084] In other preferred embodiments, the breathing valve 1 further comprises a double-hole hose connector 17; the double-hole hose connector 17 comprises a sampling channel 171 arranged in an L shape and connected to the sampling tube 137, and a pressure control channel 172 arranged in an L shape and connected to the valve plate control tube 125. It can be understood that the sampling operation is facilitated by the double-hole hose connector 17, and the opening and closing of the one-way valve plate 14 in the breathing valve 1 is also conveniently controlled.

[0085] In some preferred embodiments, the filter element 20 is configured as a filter cotton layer. It is understood that by configuring the filter element 20 as a filter cotton layer, effective filtering of the exhaled airflow and the inhaled airflow is ensured, while preventing the filter element 20 from causing excessive air resistance.

[0086] Please refer to further Fig.15 and Fig.16 In some preferred embodiments, when the filter element 20 is installed inside the breathing valve body 10; the filter element 20 includes a first filter element 201 and a second filter element 202; the first filter element 201 is arranged between the air inlet connector 11 and the air inlet valve body 12, for filtering the inhaled air flow and protecting the oxygen source; the second filter element 202 is arranged in the air outlet hole 133, for filtering the exhaled air flow.

[0087] It can be understood that the first filter element 201 is only used to filter the inhaled airflow and protect the oxygen source, that is, the first filter element 201 only passes the inhaled airflow but not the exhaled airflow, thereby preventing the harmful substances filtered and intercepted in the filter element 20 from being re-inhaled by the patient; by arranging the second filter element 202 in the air outlet hole 133, so that the second filter element 202 only passes the exhaled airflow, it is effectively prevented that the airflow exhaled by the patient is directly discharged, thereby avoiding contamination of the oxygen source and indoor air, and causing cross infection between medical staff and other patients.

[0088] In some preferred embodiments, the filter element 20 includes a first filter element 201 and a second filter element 202; the first filter element 201 is arranged between the air inlet connector 11 and the air inlet valve body 12, and is used to filter the inhaled air flow and protect the oxygen source; the second filter element 202 is arranged in the first air outlet side cavity 135 and the second air outlet side cavity 136, and is used to filter the exhaled air flow.

[0089] It can be understood that the first filter element 201 is only used to filter the inhaled airflow and protect the oxygen source, that is, the first filter element 201 only passes the inhaled airflow but not the exhaled airflow, thereby preventing the harmful substances filtered and intercepted in the filter element 20 from being re-inhaled by the patient; by arranging the second filter element 202 in the first air outlet side cavity 135 and the second air outlet side cavity 136, so that the second filter element 202 only passes the exhaled airflow, it is effectively prevented that the airflow exhaled by the patient is directly discharged, thereby avoiding contamination of the oxygen source and indoor air, and causing cross infection between medical staff and other patients.

[0090] In some other preferred embodiments, when the filter element 20 is disposed at the outlet of the breathing valve body 10 close to the patient end, the filter element 20 can be detachably connected to the outlet of the outlet connector 15. Specifically, the filter element 20 can be screwed or clamped to the outlet connector 15.

[0091] In some preferred embodiments, an air outlet rotary joint 18 is provided inside the air outlet joint 15, and the air outlet rotary joint 18 can rotate relative to the air outlet joint 15; it can be understood that by newly providing an air outlet rotary joint 18 inside the air outlet joint 15, when the breathing valve 1 is connected to the patient end, the angle of the breathing valve 1 can be rotated and adjusted, thereby facilitating the installation of the breathing valve 1.

[0092] In some preferred embodiments, the breathing valve 1 also includes a sealing cover 19, which is mounted on one end of the air inlet connector 11 away from the air inlet valve body 12, and is used to seal the air inlet valve body 12; specifically, the sealing cover 19 can rotate relative to the air inlet connector 11, thereby adjusting the opening or closing of the first air outlet cavity 123 and the second air outlet cavity 124.

[0093] In some preferred embodiments, the air inlet connector 11, the air inlet valve body 12, the air outlet valve body 13 and the air outlet connector 15 are connected in sequence by ultrasonic welding; it can be understood that the air inlet connector 11 and the air inlet valve body 12 are connected by ultrasonic welding, the air inlet valve body 12 and the air outlet valve body 13 are connected by ultrasonic welding, and the air outlet valve body 13 and the air outlet connector 15 are connected by ultrasonic welding, thereby effectively ensuring the air tightness between the air inlet connector 11 and the air inlet valve body 12, the air tightness between the air inlet valve body 12 and the air outlet valve body 13, and the air tightness between the air outlet valve body 13 and the air outlet valve body 13.

[0094] In some other preferred embodiments, the air inlet valve body 12 is further provided with a first positioning tooth 126 and a second positioning tooth 127, and the first positioning tooth 126 and the second positioning tooth 127 extend toward the air outlet valve body 13; a first positioning hole 138 adapted to the first positioning tooth 126 is provided on the outer wall of the first air outlet side cavity 135 of the air outlet valve body 13, and a second positioning hole 139 adapted to the second positioning tooth 127 is also provided on the outer wall of the second air outlet side cavity 136, and the first positioning tooth 126 is fixed in the first positioning hole 138 after penetrating into the first air outlet side cavity 135, and the second positioning tooth 127 is fixed in the second positioning hole 139 after penetrating into the second air outlet side cavity 136, thereby facilitating the installation of the breathing valve 1; further, airflow indicator marks 128 are provided on the outer surface of the first positioning tooth 126 corresponding to the first positioning hole 138, and on the outer surface of the second positioning tooth 127 corresponding to the second positioning hole 139, for indicating the airflow direction and the installation direction of the breathing valve 1.

[0095] In the second embodiment of the present invention, a respiratory therapy device is also provided, which includes the breathing valve 1 as described in the above embodiment of the present invention. It can be understood that the respiratory therapy device provided in the present invention, by configuring the breathing valve 1 provided in the present invention, can effectively avoid the direct discharge of the patient's exhaled air flow without additionally setting a filter, avoid polluting the oxygen source and indoor air, and cause cross infection between medical staff and other patients; at the same time, it also effectively facilitates the installation of the respiratory therapy device.

[0096] In summary, the present invention provides a breathing valve and a respiratory therapy device, wherein the breathing valve includes a breathing valve body; and a filter element, which is arranged inside the breathing valve body or at the outlet of the breathing valve body close to the patient end; the filter element is used to filter the inhaled airflow or the expiratory airflow. It can be understood that the breathing valve provided in the present invention has a filtering function without additionally configuring a filter by arranging a filter element inside the breathing valve body or at the outlet close to the patient end. Compared with the combination of a breathing valve and a filter in the prior art, while ensuring that the breathing valve has a filtering function, it also simplifies the structure of the breathing valve, facilitates the use of the breathing valve, and avoids the direct discharge of the patient's exhaled airflow, which pollutes the oxygen source and indoor air and causes cross infection between medical staff and other patients.

[0097] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A breathing valve, characterized in that: include: Breathing valve body; and a filter element, which is arranged inside the breathing valve body or at the outlet of the breathing valve body close to the patient end; The filter element is used to filter the inspiratory airflow or the expiratory airflow; The breathing valve body comprises: An intake valve body connected to the intake connector and used to guide the intake air flow; An outlet valve body connected to the inlet valve body and used for guiding the inlet air flow and the exhalation air flow; A one-way valve sheet, arranged between the air inlet valve body and the air outlet valve body; The one-way valve sheet comprises: A sealing portion, protruding toward the outlet valve body; The intake valve body comprises: The valve plate control groove is arranged at the axis of the inlet valve body, the opening faces the one-way valve plate and is surrounded by the one-way valve plate to form a closed space; by controlling the pressure value in the closed space, the position of the sealing part relative to the outlet valve body is controlled; A first air inlet cavity is arranged around the outer periphery of the valve plate control groove and is coaxial with the valve plate control groove; A first air outlet cavity, disposed outside the first air inlet cavity; and a second air outlet cavity, which is arranged outside the first air inlet cavity and symmetrically arranged with the first air outlet cavity; The gas outlet valve body comprises: A third air outlet cavity is disposed at the axis of the air outlet valve body and is connected to the first air outlet cavity and the second air outlet cavity; and a second air inlet cavity, which is arranged around the outer periphery of the third air outlet cavity, is coaxial with the third air outlet cavity and is connected to the first air inlet cavity; The third air outlet cavity specifically includes: An air outlet through hole is arranged at the axis of the air outlet valve body, one end of which faces the air outlet joint and the other end of which is detachably connected to the sealing portion of the one-way valve plate; An air outlet ring groove is arranged around the outer periphery of the air outlet through hole and opens toward the one-way valve plate; A first air outlet side cavity is arranged on the outer wall of the second air inlet cavity, one end of which is connected to the air outlet ring groove, and the other end of which is connected to the first air outlet cavity; and a second air outlet side cavity, which is arranged at the outer wall of the second air inlet cavity and is symmetrical with the first air outlet side cavity, one end of which is connected to the air outlet ring groove, and the other end of which is connected to the second air outlet cavity; The breathing valve body comprises: Air inlet connector, used to connect to oxygen source; And an air outlet connector, connected to the air outlet valve body, for connecting to the patient end.

2. The breathing valve according to claim 1, characterized in that: The one-way valve sheet comprises: A fixing part, installed between the inlet valve body and the outlet valve body; and a bending portion connected between the sealing portion and the fixing portion and protruding toward the intake valve body.

3. The breathing valve according to claim 2, characterized in that: The outlet valve body further comprises a sampling tube, one end of which is connected to the outlet through hole and the other end of which extends out of the second air inlet cavity, for extracting a sample of the exhaled airflow; The air intake valve body further comprises a valve plate control pipe, one end of which is connected to the valve plate control groove and the other end of which extends outside the first air intake cavity, and is used for adjusting the pressure of the enclosed space.

4. The breathing valve according to claim 3, characterized in that: The breathing valve also includes a double-hole hose connector; The double-hole hose connector includes a sampling channel arranged in an L shape and connected to the sampling tube, and a pressure control channel arranged in an L shape and connected to the valve plate control tube.

5. The breathing valve according to claim 2, characterized in that: When the filter element is disposed inside the breathing valve body; The filter element is arranged between the outlet valve body and the outlet connector, and is used to filter the inhaled air flow and the exhaled air flow; or, The filter element includes a first filter element and a second filter element; the first filter element is arranged between the air inlet connector and the air inlet valve body, and is used to filter the inhaled air flow and protect the oxygen source; the second filter element is arranged in the first air outlet side cavity and the second air outlet side cavity, or is arranged in the air outlet through hole or, is used to filter the exhaled air flow.

6. The breathing valve according to claim 1, characterized in that: When the filter element is arranged at the outlet of the breathing valve body close to the patient end, the filter element can be detachably connected to the outlet of the air outlet connector.

7. The breathing valve according to any one of claims 1 to 6, characterized in that: The filter element is configured as a filter cotton layer; An outlet rotary joint is provided in the outlet joint, and the outlet rotary joint can rotate relative to the outlet joint; The breathing valve further comprises a sealing cover, which is sleeved on one end of the air intake connector away from the air intake valve body and is used to seal the air intake valve body; The air inlet connector, the air inlet valve body, the air outlet valve body and the air outlet connector are connected in sequence by ultrasonic welding.

8. A respiratory therapy device, characterized in that: Comprising a breathing valve as described in any one of claims 1-6.

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