Blowing handle and blowing device

Abstract

The utility model discloses a blowing handle and a blowing device, and relates to the technical field of medical instruments, the blowing handle comprises a shell with an inner cavity, one end of the shell is provided with an insertion opening, one side, close to the insertion opening, in the inner cavity is provided with a connecting piece, one end of the connecting piece is provided with a first connecting part, and the other end of the connecting piece is provided with a second connecting part; one end of the connecting piece is provided with a first connecting part, the first connecting part is used for being fixedly connected with a blowing nozzle inserted from the inserting opening, the other end of the connecting piece is provided with a second connecting part, the second connecting part is fixedly connected with a pressure sensor arranged in the inner cavity, the connecting piece is provided with an air channel, and one end, close to the inserting opening, of the air channel is communicated with an air outlet of the blowing nozzle. And one end, far away from the socket, of the air passage is communicated with a pressure inlet of the pressure sensor. Through fixation of the connecting piece, the connection reliability between the blowing nozzle and the pressure sensor is improved, the accuracy of detecting the blowing pressure by the pressure sensor is improved, and the detection reliability of the blowing device is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a blow handle and a blow device. Background Technology

[0002] The Valsalva maneuver, also known as the Valsalva test, is a vagus nerve stimulation method where the patient performs a forceful breath-holding maneuver. This increases intrathoracic pressure, affecting blood circulation and autonomic nervous system function. Due to its simplicity, practicality, non-invasiveness, safety, and the ability to be repeated if unsuccessful the first time, the Valsalva maneuver is increasingly widely used in the diagnosis and treatment of cardiovascular diseases. However, the traditional method of performing the Valsalva maneuver under the doctor's instruction requires close cooperation between the doctor and patient. If the patient fails to accurately follow the doctor's instructions, or if the doctor's instructions are unclear or untimely, inaccurate test results may occur, affecting the accurate assessment of the patient's condition and the formulation of subsequent treatment plans. To address this issue, a method using a mouthpiece and pressure sensor to administer airflow has emerged as an alternative to the traditional Valsalva maneuver. While this method reduces reliance on doctor-patient cooperation to some extent, the connection between the mouthpiece and the pressure sensor remains unreliable, reducing the accuracy of the pressure sensor's detection of the airflow pressure and affecting the reliability of the airflow device. Utility Model Content

[0003] This application provides a blowing handle and a blowing device, which can solve the problem of low detection reliability of the blowing device.

[0004] According to one aspect of this application, one embodiment provides a blow handle, comprising: a housing having an inner cavity, one end of the housing having an insertion port, a connector being provided in the inner cavity near the insertion port, one end of the connector having a first connecting portion for connecting and fixing a mouthpiece inserted from the insertion port, the other end of the connector having a second connecting portion for connecting and fixing a pressure sensor disposed in the inner cavity, the connector having an air passage, the end of the air passage near the insertion port communicating with the air outlet of the mouthpiece, and the end of the air passage away from the insertion port communicating with the pressure inlet of the pressure sensor.

[0005] In one embodiment, the first connecting part is provided with a first mounting hole for the insertion end of the mouthpiece to be inserted and connected and fixed to the insertion end; the second connecting part is provided with a second mounting hole for the pressure inlet end of the pressure sensor to be inserted and connected and fixed to the pressure inlet end; and the air passage is provided between the first mounting hole and the second mounting hole.

[0006] In one embodiment, the first mounting hole is a tapered hole, the larger diameter end of the first mounting hole is the end of the first mounting hole near the inlet, the smaller diameter end of the first mounting hole communicates with the air passage, the first mounting hole is used for the tapered insertion end of the mouthpiece to be inserted, forming a connection and fixation between the first connecting part and the mouthpiece; and / or, the second mounting hole is sealed and fixed to the pressure inlet end of the pressure sensor.

[0007] In one embodiment, the air passage is a tapered hole, the large-diameter end of the air passage is connected to the first mounting hole, the small-diameter end of the air passage is connected to the second mounting hole, the diameter of the large-diameter end of the air passage is less than or equal to the minimum diameter of the first mounting hole, and the diameter of the small-diameter end of the air passage is greater than or equal to the diameter of the pressure inlet of the pressure sensor.

[0008] In one embodiment, the connector has a mounting flange at one end near the socket, and the mounting flange is fixed to the end of the housing by screws; the end face of the mounting flange near the socket contacts the end of the housing, and the end face of the mounting flange away from the socket has a plurality of protruding limiting portions; the cavity wall of the inner cavity has a first limiting rib, and the first limiting rib and the end face of the limiting portions away from the socket correspond to form a limiting of the connector in the axial direction of the socket.

[0009] In one embodiment, a groove is provided on the outer side of the end of the housing, the insertion port is provided at the bottom of the groove, the bottom of the groove is provided with a through hole for the screw to pass through, the through hole is located on the outer periphery of the insertion port, and a baffle for blocking the screw is fixed in the groove, the baffle is provided with a clearance hole for the nozzle to be inserted into the inner cavity.

[0010] In one embodiment, the inner cavity wall is provided with a first support rib and a second support rib, the first support rib and the second support rib respectively contacting the opposite sides of the main body of the pressure sensor to form a radial limit of the pressure sensor; the inner cavity wall is also provided with a second limiting rib and a third limiting rib arranged offset along the axial direction of the pressure sensor, the main body fitting between the second limiting rib and the third limiting rib to form an axial limit of the pressure sensor.

[0011] In one embodiment, the housing is cylindrical, and the cylindrical housing is formed by joining two semi-cylindrical parts. Each of the two semi-cylindrical parts has a tangent plane on its circumferential sidewall, and the tangent planes on the two parts are parallel; and / or, the blowing handle also includes a circuit board disposed in the inner cavity, and a switch button, indicator light, horn, charging interface, and battery electrically connected to the circuit board, and the pressure sensor is electrically connected to the circuit board.

[0012] According to another aspect of this application, one embodiment provides a blowing device, including a mouthpiece and a blowing handle as described above, wherein the mouthpiece is inserted into the inner cavity from the insertion port and connected and fixed to the first connecting portion.

[0013] In one embodiment, the mouthpiece is provided with filter cotton, the mouthpiece is provided with a flared opening for airflow to enter, a stepped surface is provided at the bottom of the mouthpiece near the small diameter end of the flared opening, the filter cotton is fixed on the stepped surface, and the air outlet of the mouthpiece is connected to the small diameter end of the flared opening.

[0014] According to the blowing handle and blowing device of the above embodiments, a connector is provided in the inner cavity of the housing. The first connecting part of the connector is fixedly connected to the mouthpiece, and the second connecting part is fixedly connected to the pressure sensor. By fixing the connector, the connection reliability between the mouthpiece and the pressure sensor is improved, which helps to improve the accuracy of the pressure sensor in detecting the blowing pressure and increases the detection reliability of the blowing device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an air blowing handle according to one embodiment;

[0016] Figure 2 This is a schematic diagram of the structure of the housing according to one embodiment;

[0017] Figure 3 As one embodiment Figure 2 Enlarged view of A;

[0018] Figure 4 This is an exploded structural diagram of a connector, pressure sensor, and mouthpiece according to one embodiment;

[0019] Figure 5 This is a schematic diagram of the structure of a connector according to one embodiment;

[0020] Figure 6 This is a schematic diagram of an embodiment where the airway has a conical orifice;

[0021] Figure 7 This is a schematic cross-sectional view of an air blowing device according to one embodiment;

[0022] Figure 8 As one embodiment Figure 7 Enlarged view of B;

[0023] Figure 9 This is a schematic diagram of the exploded structure of an air blowing device according to one embodiment;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Housing; 101-Insert; 102-Groove; 103-Through Hole; 104-Sound Hole; 105-Charging Hole; 106-End of Housing; 107-First Limiting Rib; 108-Second Limiting Rib; 109-Third Limiting Rib; 110-Second Support Rib; 111-Inner Cavity; 112-Cut Plane; 2-Connector; 201-Mounting Flange; 202-Limiting Part; 203-Threaded Hole; 204-First Mounting Hole; 205-Airway; 206-Second Connecting Part; 207-First Connecting Part; 208-Second Mounting Hole; 3-Pressure Sensor; 301-Pressure Inlet End; 302-Main Body; 4-Mouthpiece; 401-Insert End; 5-Baffle; 6-Indicator Light; 7-Switch Button; 8-Battery; 9-Speaker; 10-Circuit Board; 11-Dustproof Mesh; 12-Filter Cotton; 13-Charging Interface. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] Please see Figures 1 to 9 This application provides a blow handle, including a housing 1, a connector 2, a pressure sensor 3, and other functional components as needed, which are described in detail below.

[0030] In this embodiment, the housing 1 has an inner cavity 111. One end of the housing 1 is provided with an insertion port 101. A connector 2 is provided in the inner cavity 111 near the insertion port 101. One end of the connector 2 is provided with a first connecting part 207, which is used to connect and fix the mouthpiece 4 inserted from the insertion port 101. The other end of the connector 2 is provided with a second connecting part 206, which is connected and fixed to the pressure sensor 3 provided in the inner cavity 111. The connector 2 is provided with an air passage 205. The end of the air passage 205 near the insertion port 101 is connected to the air outlet of the mouthpiece 4, and the end of the air passage 205 away from the insertion port 101 is connected to the pressure inlet of the pressure sensor 3.

[0031] It is understood that in this embodiment, the connector 2 is located inside the cavity 111 of the housing 1, that is, the connector 2 is located inside the housing 1 to connect and fix the mouthpiece 4 and the pressure sensor 3. This helps to increase the integrity of the appearance of the housing 1, improve the integration of the device, and make it easier to use. In this embodiment, the housing 1 serves as the object for the patient to hold the handle. In this embodiment, the airway 205 is cleverly designed to directly connect the air outlet of the mouthpiece 4 to the pressure inlet of the pressure sensor 3. This unique connection method facilitates good communication between the air outlet of the mouthpiece 4 and the pressure inlet of the pressure sensor 3, allowing the airflow to flow smoothly to the pressure inlet of the pressure sensor 3 for detection. At the same time, it effectively shortens the blowing path, thereby significantly reducing the energy loss and time delay of the gas during transmission, improving the system's response speed and measurement accuracy, providing a strong guarantee for accurate pressure detection, and also optimizing the overall airway structure layout, making the device more compact and efficient. In this embodiment, the shape of the cavity 111 is not specifically limited, as long as it can accommodate all the components of the blowing handle. In this embodiment, the mouthpiece 4 can be, but is not limited to, a trumpet-shaped mouthpiece, or a bite mouthpiece. The mouthpiece 4 can be, but is not limited to, a disposable consumable. In this embodiment, the material of the housing 1 and the connector 2 is not specifically limited; for example, it can be any of metal or plastic.

[0032] The inner cavity 111 of the housing 1 of the blowing handle provided in this embodiment is provided with a connector 2. The first connecting part 207 of the connector 2 is connected and fixed to the mouthpiece 4, and the second connecting part 206 is connected and fixed to the pressure sensor 3. By fixing the connector 2, the connection reliability between the mouthpiece 4 and the pressure sensor 3 is improved, which is beneficial to improving the accuracy of the pressure sensor 3 in detecting the blowing pressure and increasing the detection reliability of the blowing device.

[0033] In one embodiment, such as Figures 5-8The first connecting part 207 is provided with a first mounting hole 204, which is used to insert the insertion end 401 of the nozzle 4 and connect and fix it to the insertion end 401. The second connecting part 206 is provided with a second mounting hole 208, which is used to insert the pressure inlet end 301 of the pressure sensor 3 and connect and fix it to the pressure inlet end 301. An air passage 205 is provided between the first mounting hole 204 and the second mounting hole 208. The insertion end 401 of the nozzle 4 is inserted into the first mounting hole 204, and the pressure inlet end 301 of the pressure sensor 3 is inserted into the second mounting hole 208. The air passage 205 is located between the first mounting hole 204 and the second mounting hole 208. The first mounting hole 204, the second mounting hole 208, and the air passage 205 have a through structure, which helps to improve the sealing performance of the connection between the nozzle 4 and the pressure sensor 3, and can further improve the detection reliability of the blowing device. Moreover, the assembly between the connecting part 2 and the nozzle 4 and the pressure sensor 3 is also simple. In this embodiment, the pressure inlet end 301 of the pressure sensor 3 is the end of the pressure sensor 3 where the pressure inlet is provided.

[0034] In one embodiment, the first mounting hole 204 is a tapered hole, with the larger diameter end of the first mounting hole 204 being the end near the insertion port 101, and the smaller diameter end of the first mounting hole 204 communicating with the air passage 205. The first mounting hole 204 is used for the insertion of the tapered insertion end 401 of the mouthpiece 4, forming a connection and fixation between the first connecting part 207 and the mouthpiece 4; and / or, the second mounting hole 208 is sealed and fixed to the pressure inlet end 301 of the pressure sensor 3. The tapered insertion end 401 of the mouthpiece 4 can form a fixed connection by inserting it into the tapered first mounting hole 204, which not only prevents air leakage between the mouthpiece 4 and the connector 2, but also simplifies the connection between the mouthpiece 4 and the connector 2, facilitating the replacement of the mouthpiece 4 and the use of the blowing handle. In some embodiments, the taper of the mouthpiece 4 can be smaller than the taper of the first mounting hole 204, which helps to improve the connection stability between the mouthpiece 4 and the connector 2. In some embodiments, the connection between the nozzle 4 and the connector 2 can be a Luer joint connection. The side of the tapered insertion end 401 of the nozzle 4 is designed with an angle of approximately 4 degrees. This angle is chosen based on the structural characteristics of the disposable nozzle 4 to ensure a tight fit between the two. Specifically, the angled design of the tapered insertion end 401 of the nozzle 4 allows for smoother insertion of the nozzle 4 into the first mounting hole 204, reducing friction and resistance during assembly. The first mounting hole 204 is also designed with an angle of approximately 4 degrees, matching the angle of the tapered insertion end 401 of the nozzle 4. This design not only ensures a tight fit between the two but also improves the stability of the connection. When the nozzle 4 is inserted into the first mounting hole 204, the two angled surfaces fit tightly together, forming a sealed connection structure that effectively prevents gas leakage. The tight fit of the two angled surfaces effectively prevents gas leakage, ensuring the accuracy and reliability of the blowing process and avoiding detection errors caused by air leakage. In some applications, the first connecting part 207 may not use a hole structure to connect to the mouthpiece 4. For example, the first connecting part 207 can be provided with a connecting shaft, which is inserted into the insertion end 401 of the mouthpiece 4 to form a connection between the mouthpiece 4 and the connector 2. The air passage 205 passes through the connecting shaft and communicates with the air outlet of the mouthpiece 4. In this embodiment, the second mounting hole 208 and the pressure inlet end 301 are sealed and fixed, which can prevent air leakage between the mouthpiece 4 and the pressure sensor 3. The connection method between the mouthpiece 4 and the pressure sensor 3 is simple, and the pressure inlet end 301 of the pressure sensor 3 extends into the second mounting hole 208, which is beneficial to improving the accuracy of the pressure sensor 3 in detecting the blowing pressure. The sealing and fixing can be, but is not limited to, adhesive fixing. In some applications, the second connecting part 206 can also be adhesively fixed to the pressure sensor 3 at other parts. For example, the end face of the second connecting part 206 can be adhesively fixed to the pressure sensor 3 to achieve a sealed connection. In this case, the pressure inlet end 301 of the pressure sensor 3 can still extend into the second mounting hole 208.

[0035] In one embodiment, such as Figures 6-8As shown, the air passage 205 is a conical hole. The large-diameter end of the air passage 205 communicates with the first mounting hole 204, and the small-diameter end of the air passage 205 communicates with the second mounting hole 208. The diameter of the large-diameter end of the air passage 205 is less than or equal to the minimum diameter of the first mounting hole 204, and the diameter of the small-diameter end of the air passage 205 is greater than or equal to the diameter of the pressure inlet of the pressure sensor 3. It can be understood that in this embodiment, the two opposite ends of the conical hole are the large-diameter end and the small-diameter end, respectively. When the air passage 205 is a conical hole, and the diameter of the small-diameter end of the air passage 205 is greater than or equal to the diameter of the pressure inlet of the pressure sensor 3, the airflow sequentially flows through the nozzle 4, the air passage 205, and the pressure inlet of the pressure sensor 3. The width of the overall airflow channel gradually decreases, thereby guiding the airflow in the first mounting hole 204 to flow better into the second mounting hole 208 for detection by the pressure sensor 3. This is beneficial for reducing airflow pressure loss and improving the detection reliability of the blowing device. The diameter of the second mounting hole 208 is larger than the diameter of the air passage 205, which is more conducive to the smooth entry of airflow. In some embodiments, when the first mounting hole 204 is also a tapered hole, the taper of the tapered air passage 205 can be greater than the taper of the tapered first mounting hole 204. In some applications, the air passage 205 can also be a cylindrical hole.

[0036] In one embodiment, such as Figures 2-6The connector 2 has a mounting flange 201 at one end near the socket 101. The mounting flange 201 is connected and fixed to the end 106 of the housing by screws. The end face of the mounting flange 201 near the socket 101 contacts the end 106 of the housing. The end face of the mounting flange 201 away from the socket 101 has multiple protruding limiting portions 202. The cavity wall of the inner cavity 111 has a first limiting rib 107. The first limiting rib 107 and the end face of the limiting portion 202 away from the socket 101 correspond to form a limiting position of the connector 2 in the axial direction of the socket 101. In this embodiment, the mounting flange 201 can be provided with a threaded hole 203. The screw passes through the end 106 of the housing and is threadedly engaged with the threaded hole 203 for fixation. The mounting flange 201 of the connector 2 forms an axial limit at one end of the connector 2 between itself and the end 106 of the housing, and the limiting part 202 of the connector 2 forms an axial limit at the other end of the connector 2 between itself and the first limiting rib 107. This improves the connection stability of the connector 2 and also provides pre-positioning for the connector 2 during assembly, facilitating assembly. In this embodiment, the axial direction refers to the direction of the axis extending from the insertion port 101. This embodiment does not limit the specific structure of the first limiting rib 107; it can be a protruding structure on the cavity wall of the inner cavity 111, and can limit the axial movement of the connector 2. In some embodiments, the mounting flange 201 can be located at the end of the first connecting part 207, and the limiting part 202 and the first connecting part 207 are an integral structure, with a protruding shape on the side wall of the connecting part. In some embodiments, the connector 2 may not have a mounting flange 201. Instead, the diameter of the first connecting portion 207 can be set large enough, and a threaded hole can be directly provided on the end face of the first connecting portion 207. The connector 2 can then be fixed to the first connecting portion 207 by screws passing through the end 106 of the housing. In some applications, the connector 2 can also be fixed to the housing 1 by adhesive bonding.

[0037] In one embodiment, such as Figures 1-3 The outer side of the end 106 of the housing has a groove 102, and the insertion port 101 is located at the bottom of the groove 102. The bottom of the groove 102 has a through hole 103 for the screw to pass through, and the through hole 103 is located on the outer periphery of the insertion port 101. A baffle 5 for blocking the screw is fixed in the groove 102. The baffle 5 has a clearance hole for the nozzle 4 to be inserted into the inner cavity 111. When the connector 2 is connected and fixed to the end 106 of the housing by screws, the baffle 5 can block the screw on the outer side of the end of the housing 1, which can prevent the screw from being exposed, which is beneficial to improving the aesthetics of the blowing handle and also helps to prevent the screw from oxidizing. In this embodiment, the baffle 5 is located in the groove 102 at the end of the housing 1, and the baffle 5 is better fixed at the end of the housing 1. In some embodiments, the depth of the groove 102 can be greater than or equal to the thickness of the baffle 5. In this embodiment, the material of the baffle 5 is not specifically limited, as long as it can have a blocking effect.

[0038] In one embodiment, such as Figure 3As shown, the inner cavity 111 has a first support rib and a second support rib 110 on its cavity wall. The first support rib and the second support rib 110 contact the opposite sides of the main body 302 of the pressure sensor 3, forming a radial limit for the pressure sensor 3. The inner cavity 111 also has a second limiting rib 108 and a third limiting rib 109 arranged axially offset from the pressure sensor 3 on its cavity wall. The main body 302 fits between the second limiting rib 108 and the third limiting rib 109, forming an axial limit for the pressure sensor 3. In this embodiment, the electronic components of the pressure sensor 3 can be disposed in the main body 302. The width of the main body 302 is greater than the width of the pressure inlet end 301 of the pressure sensor 3. The first support rib and the second support rib 110 press against the opposite sides of the main body 302 of the pressure sensor 3, forming a radial limit for the pressure sensor 3. The main body 302 fits between the second limiting rib 108 and the third limiting rib 109, forming an axial limit for the pressure sensor 3. During assembly, the main body 302 of the pressure sensor 3 is placed between the second limiting rib 108 and the third limiting rib 109. When assembling the housing 1, the first supporting rib and the second supporting rib 110 are pressed against the opposite sides of the pressure sensor 3, thus fixing the pressure sensor 3. The assembly of the pressure sensor 3 is simple, and its fixation within the housing 1 is also good. This embodiment does not limit the specific structure of the first supporting rib, the second supporting rib 110, the second limiting rib 108, and the third limiting rib 109; they can all be protruding structures on the cavity wall of the inner cavity 111 and can cooperate with corresponding parts on the pressure sensor 3. In some embodiments, when the housing 1 is formed by joining two halves, the first supporting rib can be set on one half of the housing 1, and the second supporting rib 110 can be set on the other half of the housing 1. In some application scenarios, the pressure sensor 3 can also be fixed within the housing 1 in other ways, such as by adhesive bonding.

[0039] In one embodiment, such as Figure 1 , Figure 2As shown, the shell 1 is cylindrical, formed by joining two semi-cylindrical parts. Each of the two semi-cylindrical parts has a tangent plane 112 on its circumferential sidewall, and these tangent planes 112 are parallel. In this embodiment, the cylindrical and semi-cylindrical shapes are limited to external appearance only. The two semi-cylindrical parts may each have a cavity, and when joined, they form the shell 1 with an inner cavity 111. The tangent plane 112 on each part not only facilitates gripping but also prevents the handle from rolling when placed on a table, thus improving usability. The two-part design of the shell 1 facilitates the installation of components within the inner cavity 111. During assembly, components can be fixed to one part, and then the other part can be joined to close the shell. This embodiment does not limit the specific connection method for joining the two parts; for example, the two parts can be connected and fixed using one or more methods such as snap-fit, screw connection, or adhesive. In some embodiments, the shell 1 may also have other shapes, such as rectangular, elliptical, etc.

[0040] In one embodiment, such as Figures 7-9 The blowing handle also includes a circuit board 10 housed in the inner cavity 111, and a switch button 7, an indicator light 6, a horn 9, a charging interface 13, and a battery 8 electrically connected to the circuit board 10. The pressure sensor 3 is also electrically connected to the circuit board 10. It is understood that the switch button 7 controls the opening and closing of the blowing handle; the indicator light 6 can alert the user by lighting up, flashing, or changing color; the horn 9 can alert the user by emitting sound; and the battery 8 can be charged via the charging interface 13. The specific configurations of the circuit board 10, switch button 7, indicator light 6, horn 9, charging interface 13, and battery 8 can be customized as needed. In some embodiments, the circuit board 10 can be located in the inner cavity 111 on the side away from the socket 101 and fixed by means of snap-fit, screws or other connection methods; the battery 8 can be located between the circuit board 10 and the pressure sensor 3, and the battery 8 can be fixed by means of, but not limited to, double-sided adhesive foam; the switch button 7 and the indicator light 6 can be arranged adjacently, for example, they can be both located at the bottom of the inner cavity 111 and exposed on the outer side of the housing 1 through the hole provided at the bottom of the housing 1; the speaker 9 can be located at the top of the inner cavity 111, and the corresponding top of the housing 1 can be provided with a sound hole 104 for emitting sound. In order to prevent dust and dirt from entering the inner cavity 111 through the sound hole 104, a dustproof mesh 11 can be provided on the cavity wall of the inner cavity 111 to cover the sound hole 104; the charging interface 13 can be located on the side of the circuit board 10 away from the socket 101 and exposed on the outer side of the housing 1 through the charging hole 105 provided on the end of the housing 1 away from the socket 101. In some embodiments, the blow handle may not include the battery 8 and charging interface 13. Instead, a battery mounting area may be provided on the housing 1, and power can be replenished by replacing the battery.

[0041] The blowing handle provided in the above embodiment has a connector 2 in the inner cavity 111 of the housing 1. The first connecting part 207 of the connector 2 is connected and fixed to the mouthpiece 4, and the second connecting part 206 is connected and fixed to the pressure sensor 3. By fixing the connector 2, the connection reliability between the mouthpiece 4 and the pressure sensor 3 is improved, which helps to improve the accuracy of the pressure sensor 3 in detecting the blowing pressure and increases the detection reliability of the blowing device.

[0042] Please see Figures 7 to 9 This application embodiment also provides a blowing device, including a mouthpiece 4 and a blowing handle as described above. The mouthpiece 4 is inserted into the inner cavity 111 from the insertion port 101 and connected and fixed to the first connecting part 207.

[0043] It is understood that the air-blowing handle in this embodiment is the same as that in the above embodiment, and will not be described again here. The mouthpiece 4 in this embodiment can be, but is not limited to, a trumpet-shaped mouthpiece, or it can be a bite-shaped mouthpiece. The mouthpiece 4 can be, but is not limited to, a disposable consumable. The air-blowing device in this embodiment can be applied to, but is not limited to, foaming tests.

[0044] In some embodiments, to isolate saliva or impurities and prevent cross-infection when different patients use the handle, a filter cotton 12 can be installed on the mouthpiece 4. The mouthpiece 4 has a funnel-shaped opening for airflow, and a stepped surface is provided at the bottom of the mouthpiece 4 near the small diameter end of the funnel. The filter cotton 12 is fixed on the stepped surface, and the air outlet of the mouthpiece 4 is connected to the small diameter end of the funnel. The filter cotton 12 not only allows airflow to pass smoothly but also isolates saliva and impurities, which helps prevent cross-infection.

[0045] The blowing device provided in the above embodiment includes a blowing handle, which has a connector 2 in the inner cavity 111 of the housing 1. The first connecting part 207 of the connector 2 is connected and fixed to the mouthpiece 4, and the second connecting part 206 is connected and fixed to the pressure sensor 3. By fixing the connector 2, the connection reliability between the mouthpiece 4 and the pressure sensor 3 is improved, which is beneficial to improving the accuracy of the pressure sensor 3 in detecting the blowing pressure and increasing the detection reliability of the blowing device.

[0046] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A blow handle, characterized in that, include: A housing with an inner cavity has an insertion port at one end. A connector is provided in the inner cavity near the insertion port. One end of the connector has a first connecting portion for connecting and fixing a mouthpiece inserted from the insertion port. The other end of the connector has a second connecting portion for connecting and fixing a pressure sensor disposed in the inner cavity. The connector has an air passage. The end of the air passage near the insertion port is connected to the air outlet of the mouthpiece, and the end of the air passage away from the insertion port is connected to the pressure inlet of the pressure sensor.

2. The air blowing handle as described in claim 1, characterized in that, The first connecting part is provided with a first mounting hole, which is for the insertion end of the mouthpiece to be inserted and connected and fixed to the insertion end. The second connecting part is provided with a second mounting hole, which is for the pressure inlet end of the pressure sensor to be inserted and connected and fixed to the pressure inlet end. The air passage is provided between the first mounting hole and the second mounting hole.

3. The air blowing handle as described in claim 2, characterized in that, The first mounting hole is a tapered hole, the larger diameter end of the first mounting hole is the end of the first mounting hole near the inlet, the smaller diameter end of the first mounting hole is connected to the air passage, the first mounting hole is used for the tapered insertion end of the mouthpiece to be inserted, forming a connection and fixation between the first connecting part and the mouthpiece; and / or, the second mounting hole is sealed and fixed to the pressure inlet end of the pressure sensor.

4. The air blowing handle as described in claim 2, characterized in that, The air passage is a tapered hole. The large-diameter end of the air passage is connected to the first mounting hole, and the small-diameter end of the air passage is connected to the second mounting hole. The diameter of the large-diameter end of the air passage is less than or equal to the minimum diameter of the first mounting hole, and the diameter of the small-diameter end of the air passage is greater than or equal to the diameter of the pressure inlet of the pressure sensor.

5. The blowing handle as described in any one of claims 1-4, characterized in that, The connector has a mounting flange at one end near the socket, which is fixed to the end of the housing by screws. The end face of the mounting flange near the socket contacts the end of the housing, and the end face of the mounting flange away from the socket has multiple protruding limiting portions. The inner cavity wall has a first limiting rib, which corresponds to the end face of the limiting portions away from the socket to limit the connector in the axial direction of the socket.

6. The air blowing handle as described in claim 5, characterized in that, The outer side of the end of the housing is provided with a groove, the insertion port is provided at the bottom of the groove, the bottom of the groove is provided with a through hole for the screw to pass through, the through hole is located on the outer periphery of the insertion port, and a baffle for blocking the screw is fixed in the groove, the baffle is provided with a clearance hole for the nozzle to be inserted into the inner cavity.

7. The blowing handle as described in any one of claims 1-4, characterized in that, The inner cavity wall is provided with a first support rib and a second support rib. The first support rib and the second support rib respectively contact the opposite sides of the main body of the pressure sensor to form a radial limit of the pressure sensor. The inner cavity wall is also provided with a second limiting rib and a third limiting rib arranged offset along the axial direction of the pressure sensor. The main body fits between the second limiting rib and the third limiting rib to form an axial limit of the pressure sensor.

8. The blowing handle as described in any one of claims 1-4, characterized in that, The housing is cylindrical, and the cylindrical housing is formed by joining two semi-cylindrical parts. Each of the two semi-cylindrical parts has a tangent plane on its circumferential sidewall, and the tangent planes on the two parts are parallel; and / or, the blowing handle also includes a circuit board disposed in the inner cavity, and a switch button, indicator light, horn, charging interface, and battery electrically connected to the circuit board, and the pressure sensor is electrically connected to the circuit board.

9. An air blowing device, characterized in that, It includes a mouthpiece and a blowing handle as described in any one of claims 1-8, wherein the mouthpiece is inserted into the inner cavity from the insertion port and connected and fixed to the first connecting portion.

10. The air blowing device as claimed in claim 9, characterized in that, The mouthpiece is equipped with filter cotton and a flared opening for airflow. A stepped surface is provided at the bottom of the mouthpiece near the small diameter end of the flared opening. The filter cotton is fixed on the stepped surface. The air outlet of the mouthpiece is connected to the small diameter end of the flared opening.

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