Portable household lung function detection device

Abstract

The invention provides a portable household lung function detection device, and belongs to the technical field of lung function detection. Comprising a detection host and a detection cylinder, the detection host and the detection cylinder are connected through a cable, the bottom of the detection cylinder is fixedly connected with a handle, and one end of the top of the detection cylinder is fixedly connected with an air blowing pipe; and the positioning assembly is used for fixing the relative position between the air blowing pipe and the mouth of the user, and the positioning assembly is connected with the air blowing pipe. By arranging the positioning assembly, the adaptability of the contour between the mouth of a user and the mouth holding tube is improved, the phenomenon of air leakage is avoided, the user can bite the rubber sleeve with teeth in the detection process, the user can more conveniently apply force during air suction and air blowing through the bite force of the teeth of the user, and the detection accuracy is improved. Moreover, muscles in the oral cavity of the user can be mobilized, so that the mouth of the user is in a continuously closed state when the user quickly blows and inhales, and the phenomenon of air leakage in the detection process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of pulmonary function testing, and in particular to a portable household pulmonary function testing device. Background Art

[0002] A pulmonary function test device is a medical device used to evaluate lung function, mainly used to measure the ventilation function and gas exchange function of the lungs. A portable pulmonary function test device for home use mainly consists of two parts: a handheld test tube and a test host. During the pulmonary function test, the user needs to hold the test tube in his hand, then hold the insufflation tube in his mouth and blow and inhale according to the test steps. Finally, the test results are analyzed by the test host.

[0003] During the entire pulmonary function test process, the user needs to completely cover the airway with his mouth, and then quickly complete a series of operations such as rapid blowing, rapid inhalation, and holding the breath. During the entire test process, the user's mouth cannot be separated from the airway, and there cannot be a gap between the lips and the airway, otherwise it will cause air leakage, resulting in inaccurate test results. However, existing airways are generally cylindrical with a smooth surface, which is inconsistent with the contour of human lips. Therefore, the user needs to force his lips to tighten and wrap around the airway, which makes it easy for the user to unconsciously open his lips during rapid inhalation and blowing, which in turn causes air leakage to affect the test results, requiring repeated testing and wasting time.

[0004] Therefore, the present invention provides a portable home pulmonary function testing device to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a portable home-use pulmonary function testing device. By setting a positioning component, the adaptability of the contour between the user's mouth and the oral tube is improved to avoid air leakage. During the testing process, the user can bite the rubber sleeve with his teeth. The bite force of the user's teeth not only makes it more convenient for the user to apply force when inhaling and blowing, but also mobilizes the muscles inside the user's mouth, so that the user's mouth is in a continuously closed state when inhaling and blowing quickly, ensuring that no air leakage occurs during the testing process. The above setting can solve the problem that during the use of the current pulmonary function testing device, the user can easily open his lips unconsciously during rapid inhalation and blowing, thereby causing air leakage to affect the test results.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A portable home pulmonary function testing device includes a testing host and a testing cylinder, wherein the testing host and the testing cylinder are connected by a cable, a handle is fixedly connected to the bottom of the testing cylinder, and an air blow tube is fixedly connected to one end of the top of the testing cylinder; a positioning assembly is used to fix the relative position between the air blow tube and the user's mouth, and the positioning assembly is connected to the air blow tube.

[0007] Optionally, the positioning assembly includes a connecting tube that is sleeved on the outer wall of the blowing tube, and the end of the connecting tube away from the blowing tube is fixedly connected to a facial baffle, and the side of the facial baffle opposite to the connecting tube is fixedly connected to an oral tube, and a rubber sleeve is sleeved on the outer wall of the oral tube, and both ends of the facial baffle are fixedly connected to constraint strips.

[0008] Optionally, a rubber ring is inserted into the inner wall of the connecting tube, the inner wall of the rubber ring is a gradient structure, and the size of the rubber ring at one end close to the facial baffle is larger than that at the other end.

[0009] Optionally, a plurality of plug-in blocks are fixedly connected to the outer wall of the rubber ring, mounting holes corresponding to the positions of the plug-in blocks are opened on the connecting pipe, and the cross-sectional profile of the end of the plug-in block is triangular.

[0010] Optionally, the cross-sectional profile of the oral tube is a rounded rectangle, the middle position of the oral tube has an inwardly concave arc-shaped profile, and reinforcing ribs are fixedly connected to the outer wall of the oral tube.

[0011] Optionally, the rubber sleeve is wrapped around the end of the oral tube, one end of the rubber sleeve close to the facial baffle is fixedly connected to an outer turn-up edge, and the other end of the rubber sleeve is fixedly connected to an inner turn-up edge.

[0012] Optionally, the outer turning edge has an outward curvature, and the inner turning edge has an outward curvature toward the center of the oral tube.

[0013] Optionally, the restraint strips are divided into two groups, two by two, and are symmetrically installed at both ends of the facial shield. The restraint strips and the facial shield are an integrally manufactured structure. The end of the restraint strip away from the facial shield is a hook structure, and a hanging ring is hung on the hook structure of the restraint strip. A strap is wrapped around the hanging ring, and Velcro is provided on the strap. The restraint strips at both ends of the facial shield are fixed to each other through the hanging ring and the strap.

[0014] Optionally, an elastic plate is clamped on the outer wall of the connecting tube, nose clip bent plates are symmetrically installed on both sides of the elastic plate, one end of the nose clip bent plate is fixedly connected to a clamp, and the clamp is made of rubber.

[0015] Optionally, the size of the elastic plate is adapted to the size of the outer circumference of the connecting tube, the elastic plate has a "C"-shaped profile, and the nose clip bending plate has an arc-shaped profile.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting a positioning component, the adaptability of the contour between the user's mouth and the oral tube is improved, the airtightness between the user's mouth and the oral tube is improved, and air leakage is avoided. During the detection process, the user can bite the rubber sleeve with his teeth. The bite force of the user's teeth not only makes it more convenient for the user to apply force when inhaling and blowing, but also mobilizes the muscles inside the user's mouth, so that the user's lip muscles are in a state of continuous contraction, so that the user's mouth is in a continuously closed state when blowing and inhaling quickly, ensuring that there will be no air leakage during the detection process and improving the accuracy of the detection. In addition, the setting of the rubber sleeve can prevent the user's saliva from entering the oral tube when blowing quickly, affecting the internal hygiene of the oral tube.

[0017] By setting up a facial baffle, the overall contour of the facial baffle is arc-shaped and is made of a thin plastic material, which can make the facial baffle better adaptable to the contour of the user's face, thereby improving the comfort of the user when wearing the facial baffle. Since the constraint strip is a slender sheet structure and is made of a plastic material that is integrally manufactured with the facial baffle, the constraint strip can undergo corresponding deformation according to the contour of the face of different users, thereby improving the comfort and stability of the user when wearing the facial baffle. When the user wears the facial baffle on the face, the facial baffle can be used to limit the connecting tube and the oral tube, so that the user does not need to deliberately wrap the mouth around the oral tube, which improves the convenience of the user's inhalation and blowing operations, avoids air leakage between the user and the oral tube when inhaling and blowing, and improves the accuracy of detection.

[0018] By setting up the oral tube, since the cross-sectional profile of the oral tube is a rounded rectangle and the middle position of the oral tube has an inwardly concave arc profile, such a structural setting makes the profile of the oral tube similar to the profile of the human mouth, thereby improving the adaptability of the user's mouth and the oral tube, thereby further improving the airtightness between the user's mouth and the oral tube. The reinforcing ribs provided on the outer wall of the oral tube can not only improve the strength of the oral tube structure, and prevent the oral tube from breaking and deforming when the user bites the oral tube with teeth for a long time, but also increase the friction between the outer wall of the oral tube and the rubber sleeve, and prevent the rubber sleeve from being dislocated and detached during use.

[0019] By setting up a connecting tube and a gradual change structure of the rubber ring inside the connecting tube, the connecting tube can not only be fixed together with the insufflation tube, but also be connected to the inhalation tube, thereby improving the practicality of the connecting tube and making the entire lung function test more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a portable home lung function testing device; Figure 2 This is an enlarged schematic diagram of the three-dimensional structure of the positioning component and the suction cylinder; Figure 3 This is an enlarged schematic diagram of the three-dimensional structure of the positioning component and the detection tube; Figure 4 It is a schematic diagram of the top view of the positioning component; Figure 5 A schematic diagram of the cross-sectional structure of the face baffle and rubber cover; Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the rubber ring; Figure 7 This is a schematic diagram of the three-dimensional structure of the facial baffle; Figure 8 It is a schematic diagram of the three-dimensional structure of the rubber sleeve; Figure 9 This is a schematic diagram of the matching structure of the facial baffle and the nose clip bending plate; Figure 10 It is a schematic diagram of the three-dimensional structure of the nose clip bending plate.

[0022] Reference numerals: 1. Detection host; 2. Detection cylinder; 201. Handle; 202. Blowing tube; 3. Face shield; 301. Restraint strip; 302. Hanging ring; 303. Strap; 304. Connecting tube; 305. Mounting hole; 306. Oral tube; 307. Reinforcement rib; 4. Rubber sleeve; 401. Inner flange; 402. Outer flange; 5. Rubber ring; 501. Insert; 6. Nose clip bending plate; 601. Clamp; 602. Elastic plate; 7. Inhalation cylinder; 701. Inhaler; 702. Inhalation tube.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0024] The following describes in detail a portable home pulmonary function testing device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0025] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0026] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0027] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0028] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0029] like Figure 1 and Figure 3 As shown in the figure, the embodiment of the present application provides a portable home lung function detection device, which comprises a detection host 1 and a detection cylinder 2, the detection host 1 and the detection cylinder 2 are connected through a cable, the bottom of the detection cylinder 2 is fixedly connected with a handle 201, and one end of the top of the detection cylinder 2 is fixedly connected with a blowing pipe 202. In the technical solution, the user holds the handle 201 at the bottom of the detection cylinder 2, then aligns the mouth with the blowing pipe 202 to perform the operation of inhaling and blowing, and finally the detection cylinder 2 transmits the data of gas flow and speed to the detection host 1, the detection result is obtained through the analysis of the detection host 1, and the data is displayed on the display of the detection host 1. The specific working principle of the detection cylinder 2 and the detection host 1 is disclosed as prior art, so it is not described in detail in the technical solution.

[0030] As an embodiment in the present embodiment, as Figures 1 to 4 As shown in the figure, the positioning assembly is used for fixing the relative position between the blowing pipe 202 and the mouth of the user, the positioning assembly is connected with the blowing pipe 202, and the positioning assembly comprises a connecting pipe 304 sleeved on the outer wall of the blowing pipe 202. One end of the connecting pipe 304 away from the blowing pipe 202 is fixedly connected with a face baffle 3, one side of the face baffle 3 opposite to the connecting pipe 304 is fixedly connected with a mouth tube 306, both ends of the face baffle 3 are fixedly connected with restraint strips 301, the two restraint strips 301 are symmetrically installed at both ends of the face baffle 3, the restraint strips 301 and the face baffle 3 are integrally manufactured, one end of the restraint strip 301 away from the face baffle 3 is a hook structure, a hanging ring 302 is hung on the hook structure of the restraint strip 301, a bandage 303 is wound on the hanging ring 302, and a magic tape is arranged on the bandage 303. The two restraint strips 301 at both ends of the face baffle 3 are fixed through the hanging ring 302 and the bandage 303. In the present stage, when the lung function detection device is used, the user directly uses the blowing pipe 202 to blow the detection cylinder 2. Since the blowing pipe 202 is cylindrical and smooth, the user needs to wrap the mouth around the blowing pipe 202 at any time. In the operation process, the user is easy to produce a gap between the mouth and the blowing pipe 202 when performing fast blowing, fast inhaling and holding breath, and then the phenomenon of gas leakage occurs, which affects the detection accuracy. In the technical solution, the positioning assembly is arranged at the end of the blowing pipe 202, which can effectively solve the above problems.

[0031] Specifically, the connecting tube 304 is sleeved on the outer wall of the blowing tube 202 to connect the facial baffle 3 to the blowing tube 202. The overall contour of the facial baffle 3 is arc-shaped and is made of thin plastic material. This setting is to make the facial baffle 3 better adaptable to the contour of the user's face, thereby improving the comfort of the user when wearing the facial baffle 3. The facial baffle 3 is fixed to the patient's head and face through the restraint strips 301 and the straps 303. The restraint strips 301 extend from both ends of the facial baffle 3 and extend from the user's mouth toward the user's cheek. Due to the The restraint strip 301 is a slender sheet structure and is made of plastic material as an integral part of the facial shield 3. Therefore, the restraint strip 301 is more likely to deform. This arrangement allows the restraint strip 301 to deform accordingly according to the contours of the faces of different users, thereby improving the comfort and stability of the user when wearing the facial shield 3. The restraint strips 301 at both ends of the facial shield 3 are fixed by straps 303 and Velcro. This fixing method is not only simple to operate, but also allows the Velcro pasting position to be freely adjusted according to the user's head circumference, thereby meeting the wearing needs of different users.

[0032] Furthermore, when the user wears the facial baffle 3 on the face, the connecting tube 304 and the oral tube 306 can be limited by the facial baffle 3. At this time, after the user holds the oral tube 306 with his mouth, there is no need to deliberately wrap his mouth around the oral tube 306, which improves the convenience of the user's inhalation and blowing operations, avoids air leakage between the user and the oral tube 306 when inhaling and blowing, and improves the accuracy of detection.

[0033] In this embodiment, if Figures 5 to 8As shown, the cross-sectional profile of the oral tube 306 is a rounded rectangle, and the middle position of the oral tube 306 has an inwardly concave arc profile. A reinforcing rib 307 is fixedly connected to the outer wall of the oral tube 306, and a rubber sleeve 4 is sleeved on the outer wall of the oral tube 306. The rubber sleeve 4 is wrapped around the end of the oral tube 306, and the end of the rubber sleeve 4 close to the facial baffle 3 is fixedly connected to an outer flange 402, and the other end of the rubber sleeve 4 is fixedly connected to an inner flange 401. The outer flange 402 has an outward curvature, and the inner flange 401 has a curvature that is tilted toward the center of the oral tube 306. As mentioned above, when the facial baffle 3 is worn, After being worn on the user's face, the user does not need to deliberately use force to wrap his mouth around the oral tube 306. Under the limiting effect of the facial baffle 3, the oral tube 306 fits well with the user's mouth and is not prone to air leakage. Furthermore, since the cross-sectional profile of the oral tube 306 is a rounded rectangle and the middle position of the oral tube 306 has an inwardly concave arc profile, this structural setting makes the profile of the oral tube 306 similar to the profile of the human mouth, thereby improving the adaptability of the user's mouth and the oral tube 306, thereby further improving the airtightness between the user's mouth and the oral tube 306, and avoiding air leakage.

[0034] Furthermore, the end of the oral tube 306 is covered with a rubber sleeve 4 that matches its contour. The rubber sleeve 4 not only increases the softness of the oral tube 306, but also increases the friction between the oral tube 306 and the user's mouth, thereby further ensuring the stability of the oral tube 306 in the user's mouth and making it less likely to shift or detach. In addition, the user can bite the rubber sleeve 4 with his teeth. The biting force of the user's teeth not only makes it more convenient for the user to apply force when inhaling and blowing, but also, combined with the biting force of the user's mouth, it mobilizes the muscles inside the user's mouth, allowing the user's lip muscles to be in a state of continuous contraction, so that the user's mouth is in a continuously closed state when blowing and inhaling quickly, ensuring that there will be no air leakage during the detection process and improving the accuracy of the detection.

[0035] Furthermore, the inner flange 401 at the end of the rubber sleeve 4 has an arc that is tilted toward the center of the oral tube 306. Therefore, when the user installs the rubber sleeve 4 on the oral tube 306, the tilted arc can be used to assist in guiding and sleeved on the outside of the oral tube 306, which is more convenient for the user to install the rubber sleeve 4. When the rubber sleeve 4 is installed, the inner flange 401 is located at the end of the oral tube 306, and the arc that is tilted toward the center of the oral tube 306 can prevent the gas from blowing into the mouth when the user blows. The saliva entering the oral tube 306 is prevented from entering the oral tube 306 when the user blows quickly, thereby affecting the internal hygiene of the oral tube 306. In addition, an outer flange 402 is installed at the other end of the rubber sleeve 4. Since the outer flange 402 has an outward curvature, when the user needs to remove the rubber sleeve 4, the outer flange 402 can be used to pull the rubber sleeve 4, which is easier for the user to remove it, thereby improving the overall disassembly and assembly efficiency of the rubber sleeve 4 on the oral tube 306.

[0036] It is worth mentioning that reinforcing ribs 307 are provided on the outer wall of the oral tube 306. The reinforcing ribs 307 can improve the strength of the structure of the oral tube 306, and prevent the oral tube 306 from breaking and deforming when the user bites the oral tube 306 with teeth for a long time, thereby improving the service life of the device. Moreover, when the user puts the rubber sleeve 4 on the outer wall of the oral tube 306, the raised reinforcing ribs 307 can increase the friction between the outer wall of the oral tube 306 and the rubber sleeve 4, and prevent the rubber sleeve 4 from being dislocated and detached during use.

[0037] In this embodiment, if Figure 3 、 Figure 9 and Figure 10As shown, an elastic plate 602 is clamped and connected on the outer wall of the connecting tube 304, and nose clip bent plates 6 are symmetrically installed on both sides of the elastic plate 602. One end of the nose clip bent plate 6 is fixedly connected to a clamp 601, and the clamp 601 is made of rubber. The size of the elastic plate 602 is adapted to the size of the outer circumference of the connecting tube 304. The elastic plate 602 has a "C"-shaped profile, and the nose clip bent plate 6 has an arc-shaped profile. The nose clip bent plate 6 is clamped and fixed to the outer wall of the connecting tube 304 by the elastic plate 602. Since the size of the elastic plate 602 is adapted to the size of the outer circumference of the connecting tube 304 and the elastic plate 602 has a "C"-shaped profile, the elastic plate 602 has its own elastic force. With the help of the elastic force of the elastic plate 602 and the size adapted to the connecting tube 304, the effect of clamping and fixing the nose clip bent plate 6 can be achieved. When the nose clip bent plate 6 needs to be used, it is only necessary to pull the nose clip bent plate 6 upward to allow the elastic plate 602 to deform and detach from the connecting tube 304. Here, the elastic plate 602 is not only used to connect the two nose clip bent plates 6 together, but also to create a relative elastic force between the two nose clip bent plates 6. The user can use the elastic force provided by the elastic plate 602 to clamp the clamp 601 on the outside of the nose, so that the user does not breathe through the nose during the entire pulmonary function test, but only inhales and blows out through the mouth. This saves the user from having to press the nose with his hands, thereby improving the convenience of the pulmonary function test. The user can also use the elastic plate 602 to fix the nose clip bent plate 6 on the outside of the connecting tube 304, making it convenient for the user to store the nose clip bent plate 6 after use to avoid loss or falling.

[0038] In this embodiment, if Figure 2 、 Figure 5 and Figure 6 As shown, a rubber ring 5 is inserted into the inner wall of the connecting tube 304. The inner wall of the rubber ring 5 is a gradient structure, and the size of the rubber ring 5 close to one end of the face baffle 3 is larger than the size of the other end. A plurality of plug blocks 501 are fixedly connected to the outer wall of the rubber ring 5. The connecting tube 304 is provided with mounting holes 305 corresponding to the positions of the plug blocks 501. The cross-sectional profile of the end of the plug block 501 is triangular. The rubber ring 5 and the connecting tube 304 are fixed to each other through the plug blocks 501 and the mounting holes 305. The ring 5 and the plug block 501 are integrally injection-molded through a mold. Since the cross-sectional profile of the end of the plug block 501 is triangular and the size of the end of the plug block 501 is larger than the size of the mounting hole 305, the rubber ring 5 can be fixed with the help of its end profile. Since the inner wall of the rubber ring 5 has a gradual structure, when the connecting tube 304 is sleeved on the outer wall of the blowing tube 202, the gradual structure of the rubber ring 5 can be used to seal the connecting tube 304 and the blowing tube 202, thereby improving the sealing between the two.

[0039] Optionally, during the entire pulmonary function test process, the user also needs to use the inhaler 701 and the inhalation tube 7 to spray the medicine. The specific operating steps are: the user holds the circular inhalation tube 702 at the end of the inhalation tube 7 in his mouth, and after breathing normally, uses the inhaler 701 to spray the medicine into the inhalation tube 7. Then the user inhales forcefully to inhale the medicine inside the inhalation tube 7 into the lungs, and holds his breath for 5-10 seconds, and finally repeats the above operation 4 times; in this technical solution, the gradual structure of the rubber ring 5 inside the connecting tube 304 is set, so that the connecting tube 304 can not only be fixed together with the blowing tube 202, but also be connected to the inhalation tube 702, thereby improving the practicality of the connecting tube 304 and making the entire pulmonary function test more efficient.

[0040] The working principle of the technical solution provided by the present invention is as follows: When in use, the face shield 3 is first worn on the user's face with the help of the strap 303 and the Velcro. After the face shield 3 is worn, the connecting tube 304 and the oral tube 306 can be limited by the face shield 3. At this time, after the user holds the oral tube 306 with his mouth, there is no need to deliberately wrap the mouth around the oral tube 306, which improves the convenience of the user's inhalation and blowing operations and avoids air leakage between the user and the oral tube 306 when inhaling and blowing. Since the cross-sectional profile of the oral tube 306 is a rounded rectangle and the middle position of the oral tube 306 has an inwardly concave arc profile, this structural setting makes the profile of the oral tube 306 similar to the profile of the human mouth, thereby improving the adaptability of the user's mouth and the oral tube 306, thereby further improving the airtightness between the user's mouth and the oral tube 306, and then the connecting tube 304 is sleeved on the outer surface of the blowing tube 202. On the wall, during the sleeve connection process, the rubber ring 5 gradual change structure is used to seal the connecting tube 304 and the blowing tube 202 to improve the sealing between the two. When the connection between the connecting tube 304 and the blowing tube 202 is completed, the pulmonary function test can be carried out according to the process. The detection tube 2 will transmit the data of the gas flow and speed to the detection host 1. The detection result is obtained through analysis by the detection host 1, and the data is displayed on the display of the detection host 1. During the blowing and inhaling process, the user bites the rubber sleeve 4 with his teeth. The bite force of the user's teeth not only makes it more convenient for the user to apply force when inhaling and blowing, but also cooperates with the bite force of the user's mouth to mobilize the muscles inside the user's mouth, so that the user's lip muscles are in a state of continuous contraction, so that the user's mouth is in a continuously closed state when blowing and inhaling quickly, ensuring that there will be no air leakage during the detection process and improving the accuracy of the detection.

[0041] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A portable home pulmonary function test device, comprising a test host and a test tube, characterized in that: The detection host and the detection cylinder are connected by a cable, a handle is fixedly connected to the bottom of the detection cylinder, and an air blow pipe is fixedly connected to one end of the top of the detection cylinder; A positioning assembly is used to fix the relative position between the air blow tube and the user's mouth, and the positioning assembly is connected to the air blow tube.

2. The portable home pulmonary function testing device according to claim 1, characterized in that: The positioning assembly includes a connecting tube that is sleeved on the outer wall of the blowing tube, and the end of the connecting tube away from the blowing tube is fixedly connected to a facial baffle, and the side of the facial baffle opposite to the connecting tube is fixedly connected to an oral tube, and a rubber sleeve is sleeved on the outer wall of the oral tube, and both ends of the facial baffle are fixedly connected to constraint strips.

3. The portable home pulmonary function testing device according to claim 2, characterized in that: A rubber ring is inserted into the inner wall of the connecting pipe. The inner wall of the rubber ring is a gradual structure, and the size of the rubber ring close to one end of the facial baffle is larger than that of the other end.

4. The portable home pulmonary function testing device according to claim 3, characterized in that: A plurality of plug-in blocks are fixedly connected to the outer wall of the rubber ring, and mounting holes corresponding to the positions of the plug-in blocks are opened on the connecting pipe. The cross-sectional profile of the end of the plug-in block is triangular.

5. The portable home pulmonary function testing device according to claim 2, characterized in that: The cross-sectional profile of the oral tube is a rounded rectangle, the middle position of the oral tube has an inwardly concave arc profile, and reinforcing ribs are fixedly connected to the outer wall of the oral tube.

6. The portable home pulmonary function testing device according to claim 2, characterized in that: The rubber sleeve is wrapped around the end of the oral tube, one end of the rubber sleeve close to the facial baffle is fixedly connected with an outer turning edge, and the other end of the rubber sleeve is fixedly connected with an inner turning edge.

7. The portable home pulmonary function testing device according to claim 6, characterized in that: The outer turning edge has an outward curvature, and the inner turning edge has an outward curvature toward the center of the oral tube.

8. The portable home pulmonary function testing device according to claim 2, characterized in that: The restraint strips are divided into two groups, two by two, and are symmetrically installed at both ends of the facial baffle. The restraint strips and the facial baffle are an integrally manufactured structure. The end of the restraint strip away from the facial baffle is a hook structure, and a hanging ring is hung on the hook structure of the restraint strip. A strap is wrapped around the hanging ring, and Velcro is provided on the strap. The restraint strips at both ends of the facial baffle are fixed together by the hanging ring and the strap.

9. The portable home pulmonary function testing device according to claim 2, characterized in that: An elastic plate is clamped and connected on the outer wall of the connecting tube. Nose clip bent plates are symmetrically installed on both sides of the elastic plate. One end of the nose clip bent plate is fixedly connected to a clamp head, which is made of rubber.

10. The portable home pulmonary function testing device according to claim 9, characterized in that: The size of the elastic plate is adapted to the size of the outer circumference of the connecting tube. The elastic plate has a "C"-shaped profile, and the nose clip bending plate has an arc-shaped profile.

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