Speaking valve

Abstract

The utility model provides a speaking valve which comprises a frame body and a valve, the frame body comprises a channel, a baffle located at one end of the channel and a connector located at the other end of the channel, the valve is located on the side, close to the connector, of the baffle, the middle portion of the valve is fixedly connected with the baffle, and the baffle is provided with a plurality of air inlet holes. The multiple air inlet holes are arranged at intervals in the circumferential direction of the baffle and are arranged into at least two circles, and the total area of all the air inlet holes in the radial outer circle is larger than that of all the air inlet holes in the radial inner circle. According to the utility model, the middle part of the valve is fixed on the baffle plate, and the area of the air inlet holes on the radial outer side is larger than that of the air inlet holes on the radial inner side, so that a patient only needs to apply a small suction force, and then most of air flows into the shell through the air inlet holes on the radial outer side; the edge of the valve is quickly warped and deformed, air entering is accelerated, the inspiration pressure of a patient is relieved, and the disease of the patient can be recovered as soon as possible.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a speaking valve. Background Technology

[0002] Patients with respiratory diseases may experience severe respiratory distress, requiring tracheotomy to restore their ability to breathe and speak.

[0003] Current tracheostomy procedures primarily involve cutting open the trachea in the neck and inserting a tracheostomy tube to allow the patient to breathe and prevent respiratory distress. However, patients are usually unable to speak after a tracheostomy. Therefore, a speech valve can be installed at the end of the tracheostomy tube to enable the patient to speak.

[0004] Existing speech valves typically consist of an outer shell and a valve housed within it. The outer shell has an air inlet. When the patient inhales, the valve opens, allowing external air to enter the outer shell through the air inlet. When the patient exhales, the valve closes the air inlet, allowing air from inside the shell to enter the patient's larynx to aid in speech production. However, the current design and arrangement of the air inlets prevent the valve from opening quickly enough, increasing the inhalation pressure and hindering the patient's recovery. Utility Model Content

[0005] In order to overcome the above-mentioned technical problems, the present invention provides a speaking valve that can solve the above-mentioned technical problems.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A speaking valve includes a frame and a valve. The frame includes a channel, a baffle at one end of the channel, and a connection port at the other end of the channel. The valve is located on the side of the baffle near the connection port. The middle part of the valve is fixedly connected to the baffle. The baffle has a plurality of air inlets, which are arranged at intervals along the circumference of the baffle and in at least two concentric circles. The total area of ​​all the air inlets in the outermost concentric circle is greater than the total area of ​​all the air inlets in the innermost concentric circle.

[0008] Preferably, the diameter of the air inlet in the outermost ring is larger than the diameter of the air inlet in the innermost ring.

[0009] Preferably, the number of air intake holes in the outer radial ring is greater than the number of air intake holes in the inner radial ring.

[0010] Preferably, the ratio m of the total area of ​​all the air inlets in the inner radial circle to the total area of ​​all the air inlets in the outer radial circle satisfies 0.2≤m≤0.5.

[0011] Preferably, the ratio n of the total area of ​​all the air inlets to the area of ​​any end face of the baffle in the thickness direction satisfies 15% ≤ n ≤ 50%.

[0012] Preferably, 20% ≤ n ≤ 30%.

[0013] Preferably, the total area of ​​all the air inlets is greater than 70 square millimeters.

[0014] Preferably, the valve has a snap fastener in the middle part, the baffle has a connecting hole in the center area, the snap fastener passes through the connecting hole and snaps into the baffle, and the valve and the snap fastener are integrally formed.

[0015] Preferably, the edge of the valve has several slits, and the ratio a of the length of the slits to the diameter of the valve satisfies 10% ≤ a ≤ 40%; and / or, the thickness h of the valve satisfies 0.1mm ≤ h ≤ 0.3mm.

[0016] Preferably, the speaking valve further includes a three-way tube, the three-way tube including a first port, the first port being received within the connection port and sealed thereto.

[0017] This utility model has at least the following beneficial effects:

[0018] This invention relates to a speaking valve. By fixing the middle part of the valve to a baffle, and having an outer radial air inlet with a larger area than an inner radial air inlet, the patient only needs to apply a small suction force. This allows most of the gas to flow into the interior of the outer shell through the outer radial air inlet, causing the valve edge to quickly warp and deform, accelerating gas entry, reducing the patient's inhalation pressure, and helping the patient recover more quickly. Attached Figure Description

[0019] Figure 1 This is a front view of one embodiment of the speaking valve of this utility model;

[0020] Figure 2 yes Figure 1 The image shown is a right view of the speaking valve of this utility model;

[0021] Figure 3 yes Figure 2 The image shown is a cross-sectional view of the speaking valve of this invention along line AA.

[0022] Figure 4 yes Figure 3 The figure shown is a cross-sectional view of the frame of the speaking valve of this utility model;

[0023] Figure 5 yes Figure 3The figure shown is a cross-sectional view of the speaking valve of this utility model.

[0024] Figure 6 yes Figure 5 The image shown is a bottom view of one embodiment of the valve of this utility model.

[0025] Figure 7 yes Figure 5 The image shown is a bottom view of another embodiment of the valve of this utility model.

[0026] Figure 8 yes Figure 1 The image shown is an exploded view of the speaking valve and tracheostomy cannula of this invention.

[0027] Figure 9 yes Figure 8 The diagram shown depicts the assembly of the speaking valve and the tracheostomy cannula.

[0028] Figure 10 This is a cross-sectional view of another embodiment of the speaking valve of this utility model.

[0029] Explanation of reference numerals: 100-Speech valve; 1-Frame; 2-Baffle; 21-Air inlet; 211-Connecting surface; 22-Connecting hole; 3-Channel; 4-Connecting port; 5-Valve; 51-Snap fastener; 52-Incision; 6-T-tube; 61-First port; 62-Second port; 63-Third port; 200-Tracheostomy cannula. Detailed Implementation

[0030] The speech valve provided by the present invention will now be clearly and completely described in conjunction with the accompanying drawings. It is to be understood that the described embodiments are merely some, not all, embodiments of the present invention, and the present invention can be implemented in many other ways different from those described herein.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0032] It should be noted that all directional indications in the embodiments of this specification are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] The technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0035] In this specification, axial direction refers to the direction parallel to the line connecting the distal and proximal centers of the component; radial direction refers to the direction perpendicular to the aforementioned axial direction.

[0036] In one embodiment, this utility model discloses a speaking valve 100, including a frame 1 and a valve 5. The frame 1 includes a channel 3, a baffle 2 located at one end of the channel 3, and a connection port 4 located at the other end of the channel 3. Figures 1 to 7 As shown.

[0037] Preferably, the frame 1 can be cylindrical, or it can be cuboid, cone, or other geometric shapes, etc., and can be set as needed, without specific limitations. Furthermore, the frame 1 is made of materials such as silicone or plastic. In this embodiment, the frame 1 is made of silicone, which facilitates high-temperature sterilization and ensures safety during use. Even further, the transparency of the frame 1 is greater than or equal to 85%, allowing clear observation of the interior of the frame 1, such as whether there is dirt, improving ease of use and ensuring safety and hygiene during use.

[0038] More preferably, the valve 5 is fixed within the frame 1 to achieve unidirectional airflow within the frame 1. That is, during inhalation, external air enters the frame 1, while during exhalation, the air within the frame 1 does not flow out, thus meeting the patient's breathing and speaking needs. Furthermore, the valve 5 is preferably made of silicone material, which not only meets the elasticity requirement, facilitating its return to its original position after deformation, but also allows for high-temperature sterilization, ensuring safe and hygienic use. Even further, the transparency of the valve 5 is less than that of the frame 1, making it easier to observe the valve 5 inside the frame 1 from the outside, such as whether it is open or closed, improving ease of use. Still further, the valve 5 can be circular, square, or other geometric shapes, and its specific shape can be set as needed, without specific limitations. Furthermore, the valve 5 can be planar or curved, and its shape can be set as needed, without specific limitations.

[0039] More preferably, the channel 3 is located inside the frame 1. The channel 3 can be a cylinder, a cone, or other geometric shape, etc., without specific limitations.

[0040] Preferably, the baffle 2 is disposed at one end of the channel 3 in the axial direction, and the baffle 2 blocks one end of the channel 3. The shape of the baffle 2 is adapted to the shape of the channel 3 so that the baffle 2 can be accommodated inside the channel 3. Furthermore, the baffle 2 is fixedly connected to the inner circumferential surface of the channel 3, such as by bonding or integral molding. In this embodiment, the baffle 2 is integrally molded with the frame 1, which not only simplifies the process but also improves the structural stability.

[0041] More preferably, the connection port 4 is located at the other end of the channel 3. The shape of the connection port 4 can be a cylinder, a cuboid, or other geometric shapes, etc., and is not specifically limited here. Furthermore, the connection port 4 can be used to connect with the gas cutting sleeve 200, such as... Figure 8 or Figure 9 As shown, connector 4 can also be used to connect to tee pipe 6, such as... Figure 10 As shown, no specific limitations are made here.

[0042] Furthermore, when connector 4 is used to connect to the gas cutting sleeve 200, such as Figure 8 and Figure 9 As shown, the port of the air-cutting sleeve 200 extends into the connection port 4, and the outer peripheral surface of the air-cutting sleeve 200 abuts against the inner peripheral surface of the connection port 4, thereby achieving communication between the two; furthermore, a sealing ring or the like can also be provided between the outer peripheral surface of the air-cutting sleeve 200 and the inner peripheral surface of the connection port 4 to achieve a sealed connection between the two.

[0043] In one embodiment, the valve 5 is located on the side of the baffle 2 near the connection port 4, and the middle portion of the valve 5 is fixedly connected to the baffle 2, such as... Figure 3 and Figure 4 As shown.

[0044] Preferably, the valve 5 is housed within the channel 3 and located on the side of the baffle 2 near the connection port 4, so as to enable unidirectional flow of gas within the channel 3.

[0045] More preferably, the baffle 2 includes a connecting surface 211 facing the connecting port 4. The connecting surface 211 can be a plane or an arc surface, etc. In this embodiment, the connecting surface 211 is a plane, so that the valve 5 can fully abut against the connecting surface 211.

[0046] More preferably, the middle part of the valve 5 is a region including its center, or a region surrounding the center, i.e., an off-center region, etc., and the size of the middle part can be set as needed, without specific limitation here.

[0047] Preferably, the middle portion of the valve 5 is fixedly connected to the baffle 2, specifically, the middle portion of the valve 5 is fixedly connected to the connecting surface 211, such as by bonding or snap-fit ​​connection. The specific connection method can be set as needed and is not specifically limited here. In this embodiment, the middle portion of the valve 5 is snap-fit ​​connected to the baffle 2 to achieve a stable connection between the two.

[0048] In one embodiment, the baffle 2 is provided with a plurality of air inlets 21, which are arranged at intervals along the circumference of the baffle and in at least two concentric circles. The total area of ​​all the air inlets 21 in the outer radial circle is greater than the total area of ​​all the air inlets 21 in the inner radial circle. Figure 2 As shown.

[0049] Preferably, the air inlet 21 penetrates both ends of the baffle 2 along its axial direction to allow gas to flow in.

[0050] More preferably, the air inlet 21 can be a cylinder, cuboid, or other geometric shape, and its specific shape can be set as needed, without being specifically limited here. In this embodiment, the air inlet 21 is a cylinder.

[0051] More preferably, the air inlet 21 has multiple inlets arranged at intervals along the circumference, thus forming at least two concentric rings, such as... Figure 2 As shown, in this embodiment, the air inlet 21 is arranged in two rings and is spaced apart radially.

[0052] Preferably, when the air inlets 21 are arranged in multiple rings, the area of ​​all the air inlets 21 in the outermost ring is larger than the area of ​​all the air inlets 21 in the innermost ring, thereby significantly increasing the air intake area in the outermost ring. This allows more gas to exert force on the edge of the valve 5, which helps the edge of the valve 5 to open quickly, thereby reducing the pressure on the patient's inhalation and helping the patient recover as soon as possible.

[0053] In one embodiment, the diameter of the air inlet 21 in the outermost radial ring is larger than the diameter of the air inlet 21 in the innermost radial ring, such as... Figure 2 As shown.

[0054] Preferably, the diameters of the air inlets 21 on the outer radial ring can be the same or different. In this embodiment, the diameters of the air inlets 21 on the outer radial ring are the same.

[0055] More preferably, the diameters of the air inlets 21 on the inner radial ring can be the same or different. In this embodiment, the diameters of the air inlets 21 on the inner radial ring are the same.

[0056] Preferably, the diameter of at least one air inlet 21 in the radial outer ring is larger than the maximum diameter of the air inlet 21 in the radial inner ring, thereby significantly increasing the air intake of a single air inlet 21. This results in a greater thrust on the edge of the valve 5 by the gas entering through it during inhalation, making it easier for the edge of the valve 5 to open and reducing the pressure on the patient during inhalation.

[0057] It should be noted that in the most preferred embodiment, the diameter of all the air inlets in the radial outer ring is larger than the maximum diameter of the air inlets 21 in the radial inner ring, thereby significantly increasing the air intake area of ​​the air inlets 21 in the radial outer ring, so that the thrust applied to the edge of the valve 5 during inhalation is maximized, the edge of the valve 5 is easier to open, and the patient's inhalation pressure is reduced.

[0058] In one embodiment, the number of air inlets 21 in the outer radial ring is greater than the number of air inlets 21 in the inner radial ring, such as... Figure 2 As shown.

[0059] Preferably, the number of air inlets 21 in the radial outer ring can be multiple, such as two, three, four, five, etc., and the specific number can be set as needed, without being specifically limited here. In this embodiment, the number of air inlets 21 in the radial outer ring is 12.

[0060] More preferably, the number of air inlets 21 in the radial inner ring can be multiple, such as two, three, four, five, etc., and the specific number can be set as needed, without being specifically limited here. In this embodiment, the number of air inlets 21 in the radial inner ring is 6.

[0061] Preferably, the number of air inlets 21 on the outer radial ring is greater than the number of air inlets 21 on the inner radial ring, thereby increasing the air intake on the outer radial ring so that the edge of the valve 5 can more easily lift and open. In addition, the distribution of more air inlets on the outer radial ring can reduce the distance between adjacent air inlets 21, so as to ensure that during inhalation, the incoming gas exerts a force on the edge of the valve 5 to make it quickly lift and deform, thereby reducing the patient's inhalation pressure.

[0062] In one embodiment, the ratio m of the total area of ​​all the air inlets 21 in the radial inner circle to the total area of ​​all the air inlets 21 in the radial outer circle satisfies 0.2≤m≤0.5.

[0063] Preferably, the ratio m of the total area of ​​all air inlets 21 in the inner radial circle to the total area of ​​all air inlets 21 in the outer radial circle can be any value between 0.2 and 0.5, such as 0.2, 0.3, 0.4, 0.5, etc. The specific value can be set as needed and is not specifically limited here.

[0064] More preferably, the ratio m is 0.32, thereby optimizing its effect.

[0065] It should be noted that the above ratio limit significantly increases the total area of ​​the radially outer air inlet 21, thereby increasing the force exerted by the incoming gas on the edge of the valve 5 during significant inhalation, making the edge of the valve 5 more prone to warping and deformation, and reducing the pressure on the patient during inhalation.

[0066] In one embodiment, the ratio n of the total area of ​​all the air inlets 21 to the area of ​​any end face of the baffle 2 in the thickness direction satisfies 15% ≤ n ≤ 50%, such as... Figure 2 and Figure 3 As shown.

[0067] Preferably, the area of ​​any end face of the baffle 2 in the thickness direction can be the area of ​​the end face of the baffle 2 away from the connection port 4 in the thickness direction, or it can be the area of ​​the end face of the baffle 2 in the thickness direction close to the connection port 4. It can be selected as needed and is not specifically limited here.

[0068] More preferably, the total area of ​​all air inlets 21 is the sum of the areas of all air inlets 21 on the baffle 2.

[0069] More preferably, the ratio n of the total area of ​​all air inlets 21 to the area of ​​the end face of the baffle 2 in the thickness direction can be any value between 15% and 50%, such as 15%, 16%, 17%, 18%, 19%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc. The specific value can be set as needed and is not specifically limited here.

[0070] It should be noted that the limitation of the above-mentioned n ratio range not only ensures the overall air intake of the air inlet 21, but also ensures the structural strength of the baffle 2, so that the outer shell 1 remains stable and does not deform when the patient inhales or exhales, and ensures the normal operation of the speaking valve 100.

[0071] In one embodiment, 20% ≤ n ≤ 30%, such as Figure 2 and Figure 3 As shown.

[0072] It should be noted that the above limitation on the range of n ratio can optimize the above effects, significantly increase the overall air intake, and make the outer shell 1 more structurally stable, effectively preventing deformation during breathing.

[0073] In one embodiment, the total area of ​​all the air inlets 21 is greater than 70 square millimeters, such as... Figure 2 As shown.

[0074] Preferably, the total area of ​​all air inlets 21 can be 71 square millimeters, 72 square millimeters, 73 square millimeters, 74 square millimeters, 75 square millimeters, 76 square millimeters, 77 square millimeters, 78 square millimeters, 79 square millimeters, 80 square millimeters, 85 square millimeters, 90 square millimeters, etc., and the specific value can be set as needed, without being specifically limited here.

[0075] More preferably, the total area of ​​all air intakes 21 is 78 square millimeters, achieving optimal performance.

[0076] It should be noted that the total area of ​​the aforementioned air inlet 21 is significantly larger than the minimum air inlet area for a typical adult male (40 to 57 square millimeters), thereby ensuring that the patient maintains normal air intake, improving the smoothness of the patient's breathing, reducing the patient's inspiratory pressure, and contributing to the treatment of the patient's disease and a faster recovery.

[0077] In one embodiment, the valve 5 has a locking member 51 in the middle portion, and the baffle 2 has a connecting hole 22 in the central area. The locking member 51 passes through the connecting hole 22 and is locked to the baffle 3. The valve 5 and the locking member 51 are integrally formed. Figures 2 to 5 As shown.

[0078] Preferably, the fastener 51 is disposed in the middle part of the valve 5. The two can be bonded together, integrally formed, or other fixed connection methods can be used, which are not specifically limited here. In this embodiment, the fastener 51 is integrally formed with the valve 5, which not only simplifies the process but also improves the structural stability.

[0079] More preferably, the baffle 2 has a connecting hole 22 in the central area, which penetrates both ends of the baffle 2 along its axial direction, so that the fastener 51 can pass through the connecting hole 22. The shape of the connecting hole 22 can be a cylinder, a cuboid, or other geometric shape, etc., and is not specifically limited here.

[0080] Preferably, the outer peripheral surface of the buckle 51 abuts against the inner peripheral surface of the connecting hole 22, thereby firmly fixing the valve 5 to the baffle 2 and enhancing the sealing effect of both, effectively preventing air leakage.

[0081] Preferably, an adhesive layer is provided between the outer peripheral surface of the buckle 51 and the inner peripheral surface of the connecting hole 22, which not only further enhances the structural stability of both and prevents the valve 5 from shaking on the baffle 2, but also further enhances the sealing effect of both.

[0082] More preferably, the two ends of the fastener 51 are provided with protrusions. The fastener 51 passes through the connecting hole 22 and the protrusions at both ends abut against the two end faces of the baffle 2 in the axial direction, so as to securely fasten the fastener 51 to the baffle 2, effectively prevent it from shaking, and make the structure more stable.

[0083] Furthermore, an adhesive layer is provided between the protrusion and the axial end face of the baffle 2, thereby further enhancing the stability of the connection between the two and further enhancing the sealing effect between them.

[0084] In one embodiment, the edge of the valve 5 is provided with a plurality of incisions 52, and the ratio a of the length w of the incisions 52 to the diameter D of the valve 5 satisfies 10% ≤ a ≤ 40%, such as... Figure 6 and Figure 7 As shown;

[0085] Preferably, the incision 52 extends from the edge of the valve 5 toward the middle region of the valve 5. The incision 52 facilitates the deformation of the edge of the valve 5 during inspiration, effectively reducing resistance and alleviating the patient's inspiratory pressure.

[0086] More preferably, the cut 52 can be straight, curved, or wavy, etc. The specific shape can be set as needed and is not specifically limited here.

[0087] More preferably, the cut 52 can be set to one, or it can be set to two, three, four, five, etc., for example. Figure 6 and Figure 7 As shown, the specific quantity can be set according to needs, and no specific limit is made here.

[0088] Preferably, the incision 52 extends radially along the valve 5, thereby making it easier for the edge of the valve 5 to bend and deform, further reducing the pressure on the patient's inhalation.

[0089] More preferably, the length w of the cut 52 is the distance between its two ends, such as... Figure 6 As shown, the ratio a of the length w of the incision 52 to the diameter D of the valve 5 can be any value between 10% and 40%, such as 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 17%, 18%, 19%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, etc. The specific ratio can be set as needed and is not specifically limited here.

[0090] Furthermore, the ratio a of the length w of the incision 52 to the diameter D of the valve 5 is 27%, thereby optimizing its effect.

[0091] It should be noted that the limitation of the above ratio range not only allows the edge of valve 5 to quickly rise and deform when the patient inhales, so as not to block the air inlet 21, allowing external gas to flow quickly into the channel 3 through the air inlet 21, but also prevents the edge of valve 5 from deforming when not breathing, thus ensuring its overall structural strength.

[0092] In one embodiment, the thickness h of the valve 5 satisfies 0.1 mm ≤ h ≤ 0.3 mm, such as... Figure 5 As shown.

[0093] Preferably, the thickness h of the valve 5 is the distance between its two axial end faces.

[0094] More preferably, the thickness h of the valve 5 can be any value between 0.1 mm and 0.3 mm, such as 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, 0.25 mm, 0.3 mm, etc. The specific value can be set as needed and is not specifically limited here.

[0095] More preferably, the thickness h of the valve 5 is 0.2 mm or 0.25 mm, etc., so as to optimize its effect.

[0096] It should be noted that the aforementioned thickness h not only makes the edge of valve 5 more prone to warping and deformation, effectively reducing inspiratory resistance and alleviating the pressure on the patient during inhalation, but also prevents the edge of valve 5 from deforming in a non-breathing state, ensuring the stability of the structure.

[0097] In one embodiment, the speaking valve 100 further includes a three-way tube 6, the three-way tube 6 including a first port 61, the first port 61 being received within and sealed to the connection port 4, such as... Figure 10 As shown.

[0098] Preferably, the three-way pipe 6 includes a first port 61, a second port 62 and a third port 63, and the first port 61, the second port 62 and the third port 63 are interconnected.

[0099] More preferably, the first port 61 is housed within and sealed to the connection port 4 to enable communication between the interior of the tee pipe 6 and the channel 3. Specifically, the outer peripheral surface of the first port 61 abuts against the inner peripheral surface of the connection port 4 to achieve fixation and sealing; or, a sealing ring is provided between the outer peripheral surface of the first port 61 and the inner peripheral surface of the connection port 4 to achieve fixation and sealing.

[0100] Preferably, the second port 62 is used to connect with the air-cutting sleeve 200. The port of the air-cutting sleeve 200 extends into the second port 62 or the second port 62 extends into the air-cutting sleeve 200 to achieve a fixed connection and seal between the two, thereby enabling the tee pipe 6 to communicate with the interior of the air-cutting sleeve 200, facilitating the flow of gas.

[0101] Preferably, the third port 63 can be used to connect an oxygen connector so that it can not only enable the patient to speak, but also enable the patient to inhale oxygen to meet the patient's oxygen needs; or, the third port 63 can be used to connect a nebulizer connector so that it can not only enable the patient to speak, but also help the patient to nebulize to meet the purpose of treatment.

[0102] It should be noted that the third port 63 can also be used to connect other connectors, and it can be configured as needed. No specific limitations are made here.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A speaking valve characterized by, The valve comprises a frame and a valve leaflet. The frame comprises a channel, a baffle plate at one end of the channel, and a connecting port at the other end of the channel. The valve leaflet is located at the side of the baffle plate close to the connecting port, and the middle part of the valve leaflet is fixedly connected with the baffle plate. The baffle plate is provided with a plurality of air inlet holes. The plurality of air inlet holes are arranged in a circumferential direction of the baffle plate and arranged in at least two circles. The total area of all the air inlet holes in the radially outer circle is greater than the total area of all the air inlet holes in the radially inner circle.

2. The speaking valve of claim 1, wherein, The diameter of the air inlet holes in the radially outer circle is greater than the diameter of the air inlet holes in the radially inner circle.

3. The speaking valve of claim 1, wherein, The number of the air inlet holes in the radially outer circle is greater than the number of the air inlet holes in the radially inner circle.

4. The speaking valve of claim 3, wherein, The ratio m of the total area of all the air inlet holes in the radially inner circle to the total area of all the air inlet holes in the radially outer circle satisfies 0.2≤m≤0.

5.

5. The speaking valve of claim 1, wherein, The ratio n of the total area of all the air inlet holes to the area of any end surface in the thickness direction of the baffle plate satisfies 15%≤n≤50%.

6. The speaking valve of claim 5, wherein, 20％≤n≤30％。 7. The speaking valve of claim 1, wherein, The total area of all the air inlet holes is greater than 70 square millimeters.

8. The speaking valve of claim 1, wherein, The middle part of the valve leaflet is provided with a buckle member, the center area of the baffle plate is provided with a connecting hole, the buckle member passes through the connecting hole and is buckled with the baffle plate, and the valve leaflet and the buckle member are integrally formed.

9. The speaking valve of claim 1, wherein, The edge of the valve leaflet is provided with a plurality of cutouts, and the ratio a of the length of the cutout to the diameter of the valve leaflet satisfies 10%≤a≤40%. And / or, the thickness h of the valve leaflet satisfies 0.1mm≤h≤0.3mm.

10. The speaking valve of claim 1, wherein, The valve further comprises a tee pipe, and the tee pipe comprises a first port which is accommodated in the connecting port and is in sealed connection with the connecting port.

Images