Breathing filter for lung function examination

Abstract

The utility model discloses a breathing filter for lung function examination in the technical field of medical appliances, which comprises a moving device, a connecting film and an outer tube with a top wall and a bottom wall provided with first openings, the moving device comprises symmetrically arranged shells, the outer side walls of the shells are fixedly connected with the outer side wall of the outer tube, and the inner side walls of the shells are rotatably connected with rotating rods; the other ends of the rotating rods penetrate through the side wall of the shell to reach the outside of the shell, the rotating rods are in rotating fit with the side wall of the shell, the side walls of the rotating rods are detachably connected with the filter membrane, a first hole is formed in the top wall of the shell, and the filter membrane is in sliding fit with the top wall of the shell through the first hole. The utility model discloses a filter membrane fixing device, which is used for solving the problems in the prior art that a filter plate is used for fixing a filter membrane, the unused filter membrane is easily exposed in the air in the actual use process, dust in the air is attached to the filter membrane, the filter membrane is blocked, and the inspection accuracy is influenced to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the field of burn spray preparation, in particular to a breathing filter for lung function examination. Background Art

[0002] Pulmonary function testing is a common method for studying respiratory physiology and is also an important part of the diagnosis and treatment of respiratory diseases. In the prior art, a filter device is often used between the subject and the pulmonary function tester, but the existing filter devices usually use a filter membrane, and most of them are fixed structures, which is not conducive to saving costs and resources. At the same time, the filter membrane is cumbersome to replace, and the operation is inconvenient. When the subject needs to repeatedly inhale and blow at intervals, the saliva, droplets, sputum, food residues, etc. on the filter membrane will cause discomfort to the subject in the space between the mouthpiece and the filter membrane.

[0003] To solve the above problems, Chinese patent announcement No. CN208822778U discloses a respiratory filter device for lung function testing, including a four-way cylinder with an upper port, a lower port and a pair of symmetrical bypass ports, the upper port is used to connect to the mouth of the subject, the lower port is used to connect to the lung function tester, a filter plate that can slide along the symmetrical bypass ports is arranged in the four-way cylinder, a filter membrane that connects the upper port and the lower port is arranged on the filter plate, a pressure cap screwed to the outer side of the upper port of the four-way cylinder is provided, a first leak-proof air cushion sealed to the filter plate is provided on the corresponding surface of the pressure cap facing the top of the filter plate, and a second leak-proof air cushion sealed to the filter plate is provided on the corresponding surface of the symmetrical bypass ports of the four-way cylinder facing the bottom of the filter plate.

[0004] The above scheme solves the problem that the filter membrane is a fixed structure existing in the prior art, which is not conducive to saving costs and resources, and the filter membrane is cumbersome to replace, which brings inconvenience in operation, etc. When the subject needs to repeatedly inhale and blow at intervals for many times, the residue on the filter membrane will cause discomfort to the subject in the space between the mouthpiece and the filter membrane. However, this scheme uses a filter plate to fix the filter membrane. During actual use, it is easy to expose the unused filter membrane to the air, so that dust in the air adheres to the filter membrane, causing blockage of the filter membrane, affecting the accuracy of the examination. Therefore, it is necessary to propose a respiratory filter for pulmonary function testing, which can solve the problem that the filter plate is used to fix the filter membrane in the prior art to a certain extent. During actual use, it is easy to expose the unused filter membrane to the air, so that dust in the air adheres to the filter membrane, causing blockage of the filter membrane, affecting the accuracy of the examination. Utility Model Content

[0005] The purpose of the utility model is to provide a breathing filter for lung function examination, which is used to solve the problem in the prior art that, in the process of actual use, the unused filter membrane is easily exposed to the air when a filter plate is used to fix the filter membrane, so that dust in the air adheres to the filter membrane, causing blockage of the filter membrane and affecting the accuracy of the examination.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a breathing filter for lung function examination, comprising a moving device, a connecting membrane and an outer tube with a first opening on both the top wall and the bottom wall, a baffle fixedly connected to the inner side wall of the outer tube, a second opening on the baffle, an inner tube with a third opening on both the top wall and the bottom wall above the baffle, and a diameter of the inner tube greater than a diameter of the second opening, an outer side wall of the inner tube slidingly cooperates with the outer tube top wall through the first opening, strip holes are symmetrically opened on the side wall of the outer tube above the baffle, the connecting membrane horizontally slides with the outer tube side wall through the strip holes, and a plurality of filter membranes are fixedly connected to the connecting membrane;

[0007] The moving device includes a symmetrically arranged shell, the outer side walls of the shell are fixedly connected to the outer side walls of the outer tube, the inner side walls of the shell are rotatably connected to a rotating rod, and the axial direction of the rotating rod is perpendicular to the axial direction of the outer tube, the other end of the rotating rod passes through the side wall of the shell to reach the outside of the shell, and the rotating rod is rotatably matched with the side wall of the shell, the side walls of the rotating rod are detachably connected to the filter membrane, a first hole is opened on the top wall of the shell, and the filter membrane is slidably matched with the top wall of the shell through the first hole.

[0008] After adopting the above scheme, the following principles and beneficial effects are achieved: before using the device, first wrap the connecting membrane around any rotating rod, and after installing the connecting membrane to the corresponding position, rotate the rotating rod that is not wrapped around the connecting membrane to move the connecting membrane. When the filter membrane on the connecting membrane enters the outer tube, move the inner tube downward so that the outer bottom wall of the inner tube and the top wall of the baffle clamp the connecting membrane, connect the device to the pulmonary function tester, and then the patient undergoes a pulmonary function test. After one test is completed, pull the inner tube upward so that the inner wall of the inner tube and the top wall of the baffle release the clamping of the connecting membrane, rotate the rotating rod to move the connecting membrane, and a new filter membrane enters the outer tube, and move the inner tube upward. The filter screen is then replaced by a filter element which is then moved downwards so that the outer bottom wall of the inner tube and the top wall of the baffle clamp the connecting membrane again, thereby completing the replacement of the filter screen. The arrangement of the moving device enables the device to, to a certain extent, prevent the unused filter membrane from being exposed to the air, and the dust in the air from adhering to the filter membrane, causing blockage of the filter membrane, thereby affecting the accuracy of the patient's lung function test. The device, to a certain extent, solves the problem in the prior art that the filter plate is used to fix the filter membrane, and in actual use, the unused filter membrane is easily exposed to the air, causing the dust in the air to adhere to the filter membrane, causing blockage of the filter membrane, thereby affecting the accuracy of the test.

[0009] Furthermore, a plurality of one-way racks are fixedly connected to the outer wall of the outer tube, and a fixing rod corresponding to the number of the one-way racks is fixedly connected to the outer top wall of the outer tube. A pawl is hingedly connected to the fixing rod near the upper part of the side wall of the outer tube, and the pawl can engage with the one-way rack. A torsion spring is sleeved at the hinge between the pawl and the fixing rod, and one end of the torsion spring is fixedly connected to the pawl, and the other end of the torsion spring is fixedly connected to the side wall of the fixing rod.

[0010] Beneficial effect: When using the device, the pawl can prevent the inner tube from moving upwards through the one-way rack. When it is necessary to release the clamping of the connecting membrane by the outer bottom wall of the inner tube and the top wall of the baffle, the pawl is pressed downward to release the engagement between the pawl and the one-way rack, and the inner tube is moved upward at the same time. The pawl is then released and reset by the torsion spring. During use of the device, the inner tube is not easily displaced from the outer tube due to external vibrations, thereby affecting the accuracy of the patient's lung function test.

[0011] Furthermore, a rubber pad is fixedly connected to the outer bottom wall of the inner tube.

[0012] Beneficial effect: When using this device, the rubber pad can increase the friction between the connecting membrane and the outer bottom wall of the inner tube, making it difficult for the connecting membrane to be displaced during use. At the same time, the rubber pad can also provide a certain buffer for the movement of the inner tube, thereby reducing the damage to the connecting membrane caused by the downward movement of the inner tube.

[0013] Furthermore, the connection membrane is fixedly connected with positioning protrusions whose number corresponds to the filter membrane.

[0014] Beneficial effect: When adjusting the connecting membrane, the operator can determine whether the filter membrane is in place by locating the convex points, thereby reducing the situation where the filter membrane is not aligned with the connecting point between the inner tube and the outer tube, causing the connecting membrane to block the connecting point, thereby affecting the accuracy of the patient's lung function test.

[0015] Furthermore, the positioning protrusions are all hemispherical.

[0016] Beneficial effect: During the use of the device, the hemispherical positioning protrusions can enable the operator to move the connecting film with less effort, and at the same time can reduce the wear of the positioning protrusions on the outer tube.

[0017] Furthermore, one end of the rotating rod located outside the shell is fixedly connected to the connecting rod, and the other end of the connecting rod is fixedly connected to the handle.

[0018] Beneficial effect: When using the device, the operator can make a more precise adjustment to the rotation angle of the rotating rod by turning the handle.

[0019] Furthermore, a fixing device is provided at one end of the rotating rod away from the connecting rod.

[0020] Beneficial effect: During the use of the device, the fixing device can prevent the connection membrane from being displaced during the detection process, thereby affecting the accuracy of the patient's lung function test.

[0021] Furthermore, a plurality of balls are rotatably engaged with the top wall of the outer tube, and the outer side wall of the inner tube is vertically slidably engaged with the top wall of the outer tube through the balls.

[0022] Beneficial effect: During the use of the device, when pushing or pulling the inner tube, the ball bearings can enable the operator to push or pull the inner tube with less effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A cross-sectional view of an embodiment of a breathing filter for lung function testing according to the utility model;

[0024] Figure 2 It is a front view of an embodiment of a breathing filter for lung function testing of the utility model;

[0025] Figure 3 A top view of a connecting membrane of an embodiment of a breathing filter for lung function testing of the utility model;

[0026] Figure 4 for Figure 1 Enlarged view of part A. DETAILED DESCRIPTION

[0027] The following is further described in detail through specific implementation methods:

[0028] The figure marks in the drawings of the specification include: outer tube 1, baffle 11, ball 12, inner tube 2, one-way rack 21, fixed rod 3, pawl 31, moving device 4, rotating rod 41, connecting rod 411, handle 412, gear 42, pin body 43, outer shell 44, connecting membrane 5, filter membrane 51, positioning protrusion 52.

[0029] Embodiment 1

[0030] The embodiment is basically as shown in the attached Figure 1-3 As shown:

[0031] A breathing filter for lung function testing, comprising a moving device, a connecting membrane, and an outer tube with a first opening on both the top wall and the bottom wall, a baffle formed integrally on the inner side wall of the outer tube, a second opening on the baffle, an inner tube with a third opening on both the top wall and the bottom wall above the baffle, and a diameter of the inner tube greater than a diameter of the second opening, an outer side wall of the inner tube slidingly cooperates with the outer tube top wall through the first opening, strip holes are symmetrically opened on the side wall of the outer tube above the baffle, the connecting membrane horizontally slides with the outer tube side wall through the strip holes, and a plurality of filter membranes are bonded to the connecting membrane;

[0032] The mobile device includes a symmetrically arranged shell, the outer side walls of the shell are welded to the outer side walls of the outer tube, the inner side walls of the shell are rotatably connected to a rotating rod through a rotating shaft, and the axial direction of the rotating rod is perpendicular to the axial direction of the outer tube, the other end of the rotating rod penetrates the side wall of the shell to reach the outside of the shell, and the rotating rod is rotatably matched with the side wall of the shell, the side walls of the rotating rod are detachably connected to the filter membrane through a buckle, a first hole is opened on the top wall of the shell, and the filter membrane is slidably matched with the top wall of the shell through the first hole.

[0033] The specific implementation process is as follows: before using the device, first wrap the connecting film around any rotating rod, pass one end of the connecting film through the corresponding first hole, pass through the outer tube through the strip hole, pass through another first hole and then fix it to another rotating rod, rotate the rotating rod that is not wrapped with the connecting film to move the connecting film, and when the filter membrane on the connecting film enters the outer tube, move the inner tube downward so that the outer bottom wall of the inner tube and the top wall of the baffle are tightly fitted with the connecting film, completing the clamping of the connecting film, connect the device to the pulmonary function tester, and then the patient undergoes a pulmonary function test. After the first inspection is completed, the inner tube is pulled upwards to release the clamping of the connecting membrane by the inner wall of the inner tube and the top wall of the baffle, and the rotating rod is rotated to move the connecting membrane, and a new filter membrane enters the outer tube, and the inner tube is moved downwards so that the outer bottom wall of the inner tube and the top wall of the baffle clamp the connecting membrane again, thus completing the replacement of the filter. The device is provided with a moving device, so that the device can, to a certain extent, avoid the unused filter membrane from being exposed to the air, and the dust in the air adheres to the filter membrane, causing blockage of the filter membrane, thereby affecting the accuracy of the patient's lung function test.

[0034] Embodiment 2

[0035] The difference from the above embodiment is that: a plurality of one-way racks are welded to the outer side wall of the outer tube, a fixing rod corresponding to the number of the one-way racks is integrally formed on the outer top wall of the outer tube, a pawl is hingedly connected to the fixing rod near the upper part of the side wall of the outer tube, the pawl can engage with the one-way rack, and a torsion spring is sleeved at the hinge between the pawl and the fixing rod, one end of the torsion spring is welded to the pawl, and the other end of the torsion spring is welded to the side wall of the fixing rod.

[0036] The specific implementation process is as follows: when using the device, when the inner tube is moved downward, the one-way rack swings the ratchet. When the outer bottom wall of the inner tube and the top wall of the baffle clamp the connecting membrane, the ratchet prevents the inner tube from moving upward easily through the one-way rack. When it is necessary to release the clamping of the connecting membrane by the outer bottom wall of the inner tube and the top wall of the baffle, the ratchet is pressed downward to release the engagement between the ratchet and the one-way rack, and the inner tube is moved upward at the same time. The ratchet is then released and reset under the action of the elastic force of the torsion spring itself. This prevents the inner tube from being displaced from the outer tube due to external vibrations during use, thereby affecting the accuracy of the patient's lung function test.

[0037] Embodiment 3

[0038] The difference from the above embodiment is that a rubber pad is bonded to the outer bottom wall of the inner tube.

[0039] The specific implementation process is as follows: when using this device, the rubber pad can increase the contact area between the outer bottom wall of the inner tube and the connecting membrane through its own elastic deformation, thereby increasing the friction between the connecting membrane and the outer bottom wall of the inner tube, so that the connecting membrane is not easy to displace during use. At the same time, the rubber pad can also convert the kinetic energy of the inner tube movement into its own potential energy, thereby providing a certain buffer for the movement of the inner tube, thereby reducing the damage to the connecting membrane caused by the downward movement of the inner tube.

[0040] Embodiment 4

[0041] The difference from the above-mentioned embodiment is that the connection membrane is integrally formed with positioning protrusions whose number corresponds to the filter membrane.

[0042] The specific implementation process is as follows: when adjusting the connecting membrane, after the positioning protrusion reaches the outer wall of the outer tube, the operator will feel a certain resistance when continuing to rotate the rotating rod to move the connecting membrane. The operator can judge whether the filter membrane is in place by the resistance, thereby reducing the situation where the filter membrane is not aligned with the connecting point between the inner tube and the outer tube, causing the connecting membrane to block the connecting point, thereby affecting the accuracy of the patient's lung function test.

[0043] Embodiment 5

[0044] The difference from the above embodiment is that the positioning protrusions are all hemispherical.

[0045] The specific implementation process is as follows: When using the device, compared with shapes such as a cuboid or a cube, the hemispherical positioning protrusion has a smaller contact area with the outer wall of the outer tube, so the operator can continue to move the connecting film with less effort, while also reducing the wear of the positioning protrusion on the outer tube.

[0046] Embodiment 6

[0047] The difference from the above embodiment is that: a connecting rod is welded to one end of the rotating rod outside the housing, and a handle is integrally formed at the other end of the connecting rod.

[0048] The specific implementation process is as follows: when using this device, the operator holds the handle and rotates the rotating rod by moving the handle. The angular velocity of the handle is equal to that of the rotating rod, but the linear velocity of the handle is greater than the linear velocity of the side wall of the rotating rod. The operator can make more precise adjustments to the rotation angle of the rotating rod by turning the handle.

[0049] Embodiment 7

[0050] The difference from the above-mentioned embodiments is that a fixing device is provided at the end of the rotating rod away from the connecting rod, the fixing device includes a gear and a pin body, the gear is welded to the end of the rotating rod away from the connecting rod, the pin body penetrates the side wall of the outer shell and extends into the outer shell, the pin body is horizontally slidably matched with the side wall of the outer shell, and the pin body can engage with the gear.

[0051] The specific implementation process is as follows: When using the device, when the rotating rod is rotated, the rotation drives the gear to rotate coaxially. When the connecting membrane reaches the appropriate position, the pin body is pushed into the outer shell so that the pin body engages with the gear, making the gear less likely to rotate, thereby making the rotating rod less likely to rotate and the connecting membrane less likely to be displaced during the detection process, affecting the accuracy of the patient's pulmonary function test.

[0052] Embodiment 8

[0053] The difference from the above embodiment is that a plurality of balls are rotatably engaged with the top wall of the outer tube, and the outer wall of the inner tube is vertically slidably engaged with the top wall of the outer tube through the balls.

[0054] The specific implementation process is as follows: when using the device, when pushing or pulling the inner tube, the ball converts the sliding friction between the inner wall of the inner tube and the top wall of the outer tube into rolling friction, so that the operator can push or pull the inner tube more effortlessly.

[0055] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A breathing filter for lung function testing, characterized in that: It comprises a moving device, a connecting membrane and an outer tube with a first opening on both the top wall and the bottom wall, a baffle fixedly connected to the inner side wall of the outer tube, a second opening on the baffle, an inner tube with a third opening on both the top wall and the bottom wall provided above the baffle, and a diameter of the inner tube is larger than a diameter of the second opening, an outer side wall of the inner tube is slidably matched with the top wall of the outer tube through the first opening, strip holes are symmetrically opened on the side wall of the outer tube above the baffle, the connecting membrane is horizontally slidably matched with the side wall of the outer tube through the strip holes, and a plurality of filter membranes are fixedly connected to the connecting membrane; The moving device includes a symmetrically arranged shell, the outer side walls of the shell are fixedly connected to the outer side walls of the outer tube, the inner side walls of the shell are rotatably connected to a rotating rod, and the axial direction of the rotating rod is perpendicular to the axial direction of the outer tube, the other end of the rotating rod passes through the side wall of the shell to reach the outside of the shell, and the rotating rod is rotatably matched with the side wall of the shell, the side walls of the rotating rod are detachably connected to the filter membrane, a first hole is opened on the top wall of the shell, and the filter membrane is slidably matched with the top wall of the shell through the first hole.

2. The breathing filter for lung function testing according to claim 1, characterized in that: A plurality of one-way racks are fixedly connected to the outer wall of the outer tube, and a fixing rod corresponding to the number of the one-way racks is fixedly connected to the outer top wall of the outer tube. A pawl is hingedly connected to the fixing rod near the upper part of the side wall of the outer tube, and the pawl can engage with the one-way rack. A torsion spring is sleeved at the hinge between the pawl and the fixing rod, and one end of the torsion spring is fixedly connected to the pawl, and the other end of the torsion spring is fixedly connected to the side wall of the fixing rod.

3. The breathing filter for lung function testing according to claim 2, characterized in that: The outer bottom wall of the inner tube is fixedly connected with a rubber pad.

4. The breathing filter for lung function testing according to claim 3, characterized in that: The connection membrane is fixedly connected with positioning protrusions whose number corresponds to the filter membrane.

5. The breathing filter for lung function testing according to claim 4, characterized in that: The positioning protrusions are all hemispherical.

6. The breathing filter for lung function testing according to claim 5, characterized in that: One end of the rotating rod located outside the shell is fixedly connected to a connecting rod, and the other end of the connecting rod is fixedly connected to a handle.

7. The breathing filter for lung function testing according to claim 6, characterized in that: One end of the rotating rod away from the connecting rod is provided with a fixing device.

8. The breathing filter for lung function testing according to claim 7, characterized in that: The top wall of the outer tube is rotatably matched with a plurality of balls, and the outer side wall of the inner tube is vertically slidably matched with the top wall of the outer tube through the balls.

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