A pressure gauge for excitation testing

Abstract

This utility model relates to a manometer for a provocation test, comprising: a main unit having a display screen; a pressure measuring head electrically connected to the main unit; and a mouthpiece detachably and sealed to the pressure measuring head, enabling the pressure measuring head to detect and display the pressure of the gas exhaled through the mouthpiece during the provocation test on the display screen. The mouthpiece contains a breathable membrane. This utility model has a simple structure, is easy to use, and can display the expiratory pressure during a Valsalva maneuver provocation test in real time.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a pressure gauge used for excitation testing. Background Technology

[0002] Hypertrophic cardiomyopathy (HCM) is a myocardial disease of unknown cause, characterized by asymmetrical thickening of the ventricular walls, often involving the interventricular septum, resulting in a smaller ventricular cavity, obstructed blood filling of the left ventricle, and decreased left ventricular diastolic compliance. Based on the presence or absence of left ventricular outflow tract obstruction, it is classified into obstructive, non-obstructive, and occult hypertrophic cardiomyopathy, and may be related to genetic factors.

[0003] In occult obstructive hypertrophic cardiomyopathy, outflow tract obstruction often presents without symptoms, i.e., the intrathoracic pressure gradient is not high, unless strenuous exercise or other stress is performed. Clinically, a sudden increase in cardiac workload through a provocation test can detect the presence of occult left ventricular outflow tract obstruction. Additionally, the Warburg maneuver test, which increases intrapulmonary and intrathoracic pressure through forceful breath-holding, can help screen for occult obstructive hypertrophic cardiomyopathy by measuring expiratory pressure during the Warburg maneuver test. The incidence of sudden death in occult hypertrophic cardiomyopathy is higher than in non-obstructive cardiomyopathy, and treatment plans differ. Early detection of occult obstruction is crucial for patients. Many patients do not exert sufficient force to hold their breath during the Warburg maneuver test, failing to reach adequate pressure. Clinicians lack objective indicators to determine if the patient's Warburg maneuver is performed correctly. If sufficient pressure is not reached, the obstruction may not be elicited, resulting in missed opportunities for early diagnosis and treatment.

[0004] Currently, there is no easy-to-use pressure gauge on the market for use in stimulating tests. Summary of the Invention

[0005] The purpose of this invention is to provide a pressure gauge for excitation testing to solve the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A pressure gauge for use in an excitation test may include:

[0008] The host computer has a display screen;

[0009] The pressure probe is electrically connected to the main unit;

[0010] A mouthpiece is detachably and sealed to the pressure measuring head, so that the pressure measuring head can detect the pressure of the gas blown out through the mouthpiece during the excitation test and display it on the display screen, wherein the mouthpiece is provided with a breathable membrane.

[0011] In one embodiment, the mouthpiece includes a cylindrical portion and a rectangular mouthpiece portion, wherein the cylindrical portion is tightly fitted onto the pressure measuring head during use.

[0012] In one embodiment, the outer diameter of the cylindrical portion is larger than the outer diameter of the bite portion.

[0013] In one embodiment, the bite portion is provided with an anti-dislodgement groove in the circumferential direction.

[0014] In one embodiment, the mouthpiece is integrally molded from silicone.

[0015] In one embodiment, the pressure probe includes a connecting part and a handheld part. The top surface of the connecting part is recessed and a pressure sensor is installed thereon. When in use, the cylindrical part is tightly fitted onto the connecting part.

[0016] In one embodiment, an annular shielding flange is provided between the connecting portion and the handheld portion, and the outer diameter of the annular shielding flange is more than 2 cm larger than the outer diameter of the connecting portion.

[0017] In one embodiment, the connecting portion is shaped like a frustum of a cone.

[0018] In one embodiment, the host is provided with a pressure signal connector, and the signal line of the pressure probe is detachably connected to the pressure signal connector.

[0019] In one embodiment, the main unit is flat and has a flip-up support leg, which unfolds during use so that the main unit can be tilted.

[0020] The present invention adopts the above-mentioned technical solution and has the following beneficial effects: the present invention has a simple structure, is easy to use, and can display the expiratory pressure curve during the Valsalva maneuver test in real time, thereby reducing the workload of doctors. Attached Figure Description

[0021] Figure 1 This is a perspective view of a pressure gauge used for an excitation test according to an embodiment of the present invention, wherein the pressure measuring head is not connected to the main unit;

[0022] Figure 2 yes Figure 1 A perspective view of the nozzle of the manometer used for the excitation test;

[0023] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of the nozzle of the manometer used for the excitation test;

[0024] Figure 4 This is a perspective view of a mouthpiece according to another embodiment of the present invention;

[0025] Figure 5 yes Figure 1 A perspective view of the pressure gauge head used for the excitation test;

[0026] Figure 6 yes Figure 1 The diagram shows a perspective view of the end cap of the pressure gauge head used for the excitation test. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0028] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0030] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0031] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0032] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] like Figures 1-5 As shown, a manometer for a provocation test according to an embodiment of the present invention may include a main unit 1, a pressure measuring head 2, and a mouthpiece 3. The main unit 1 has a display screen 11. The pressure measuring head 2 is electrically connected to the main unit 1 (e.g., connected via a signal line 20). The mouthpiece 3 is detachably and sealed to the pressure measuring head 3, allowing the pressure measuring head 2 to detect the pressure of the gas exhaled through the mouthpiece 3 during the provocation test and display it on the display screen 11, for example, displaying real-time pressure values ​​and pressure curves. Doctors can intuitively judge whether the patient's Warburg maneuver is standard by observing the pressure curve, without constantly staring at the pressure gauge, which is very convenient. The Warburg maneuver provocation test is only valid if the pressure measured by the pressure measuring head 2 is maintained at 40 mmHg for at least 15 seconds, ensuring the accuracy of the test results and helping to screen for occult obstructive hypertrophic cardiomyopathy. The mouthpiece 3 has a breathable membrane 30 inside to remove germs and saliva carried in the exhaled air, preventing contamination of the pressure measuring head 2. The mouthpiece 3 is disposable and cannot be reused to avoid cross-infection. The various components are described in detail below.

[0036] like Figure 1 As shown, the host unit 1 has a flat, tablet-like shape, similar to a tablet computer. The display screen 11 is an LCD screen. Preferably, the display screen 11 is a touchscreen for easy operation. The host unit 1 is equipped with a pressure signal connector 12, to which the signal line 20 of the pressure measuring head 2 is detachably connected. Specifically, the pressure signal connector 12 is a female connector, and the signal line 20 of the pressure measuring head 2 has a male connector. In use, the signal line of the pressure measuring head 2 is simply plugged into the pressure signal connector 12, which is very convenient. It should be understood that the pressure signal connector 12 and the signal line 20 can also be connected using other connection structures known to those skilled in the art. In other embodiments, an interface for connecting the signal line 20 can also be directly provided on the host unit, meaning the signal line 20 can be directly plugged into the host unit 1.

[0037] In addition, the main unit 1 is equipped with a rotatable support leg 13. When unfolded, the support leg 13 forms a triangular support structure with the bottom edge of the main unit 1, allowing the main unit 1 to be tilted and placed on a table for convenient operation by the doctor. The tilt angle of the main unit 1 can be adjusted by adjusting the unfolded angle of the support leg 13. Preferably, the tilt angle of the main unit 1 is in the range of 60° to 90°. In this embodiment, the support leg 13 is located on the back of the main unit 1 and is in the shape of a straight plate or a rod. In other embodiments, the support leg may also be in the shape of a door frame and rotatably mounted on both sides of the main unit 1.

[0038] A power switch 14 is located below the display screen 11 for easy operation of the host 1. It should be understood that the power switch 14 can also be located in other positions on the host 1.

[0039] like Figures 1-4 As shown, the mouthpiece 3 may include a cylindrical portion 31 and a bite portion 32. In use, the cylindrical portion 31 is tightly fitted onto the pressure testing head 2, and the test subject blows air by biting the bite portion 32. In this embodiment, the bite portion 32 is rectangular. It should be understood that the mouthpiece 3 may also be entirely cylindrical. In this embodiment, the outer diameter of the cylindrical portion 31 is larger than the outer diameter of the bite portion 32. It should be understood that the outer diameter of the cylindrical portion 31 may also be smaller than or equal to the outer diameter of the bite portion 32. In another embodiment (see...) Figure 4 In this embodiment, the mouthpiece portion 32 has a circumferential anti-dislodgement groove 321, which can be held in place by teeth or gums to prevent the mouthpiece 3 from falling out of the subject's mouth. In the illustrated embodiment, the anti-dislodgement groove 321 protrudes from the main body of the mouthpiece portion 32. Alternatively, the anti-dislodgement groove 321 may be formed only on the upper and lower surfaces of the mouthpiece portion 32. The mouthpiece portion 32 is typically 2–5 cm long, 1–2 cm wide, and 0.5–1.0 cm high; the anti-dislodgement groove 321 is typically 2–5 mm wide and 2–5 mm high.

[0040] To ensure a tight connection between the nozzle 3 and the pressure testing head 2, and to prevent air leakage from affecting the accuracy of the test, the nozzle 3 can be made of plastic or silicone with a certain degree of elasticity. Preferably, the nozzle 3 is integrally molded from silicone to save costs.

[0041] like Figure 1 , 5As shown in Figure 6, the pressure measuring head 2 may include a connecting portion 21 and a handle portion 22. The top surface of the connecting portion 21 is recessed and a pressure sensor 24 is mounted thereon. A signal line 20 is connected to the pressure sensor 24 and passes through the end of the handle portion 22. In use, the mouthpiece 3 (specifically, the cylindrical portion) is tightly fitted onto the connecting portion 21. To facilitate connection with the mouthpiece 3, the connecting portion 21 is truncated cone-shaped, meaning the diameter of the connecting portion 21 gradually increases from the top to the bottom, and the outer diameter of the top of the connecting portion 21 is substantially the same as the inner diameter of the cylindrical portion of the mouthpiece 3. The outer diameters of the connecting portion 21 and the handle portion 22 can be approximately the same. The connecting portion 21 and the handle portion 22 are hollow to facilitate the passage of the signal line 20. In this embodiment, the top surface of the connecting portion 21 is recessed (e.g., about 0.5 to 1 cm) to prevent the pressure sensor 24 from protruding and being accidentally damaged. It should be understood that the top surface of the connecting portion 21 can also be flush. The pressure sensor 24 can be a commercially available pressure sensing diaphragm or pressure sensing sheet, which has the advantages of small size and low price.

[0042] In the illustrated embodiment, an annular shielding flange 23 is provided between the connecting portion 21 and the handle portion 22. The outer diameter of the annular shielding flange 23 is more than 2 cm larger than the outer diameter of the connecting portion 21. The annular shielding flange 23 can prevent the air blown out, saliva, etc., from coming into contact with the doctor's hand holding the handle portion 22 during blowing, thereby avoiding cross-infection. Of course, in some embodiments, the annular shielding flange 23 may not be provided.

[0043] Preferably, the main body of the pressure measuring head 2 can be manufactured by 3D printing, which can reduce the processing cost of the pressure measuring head.

[0044] In addition, the pressure measuring head 2 may also include an end cap 25, which is detachably fixed to the end of the handheld part 22 and has a wire passage hole 251, allowing the signal line 20 to pass through the wire passage hole 251. Preferably, the end cap 25 is tightly fixed to the end of the handheld part 22. It should be understood that the end cap 25 and the handheld part 22 may also be fixedly connected by threaded connection or snap-fit. When assembling the pressure measuring head 2, the pressure sensor 24 is first fixedly installed on the recessed top surface of the connecting part 21. Then, the signal line 20 passes through the wire passage hole 251 of the end cap 25, passes through the internal cavity of the pressure measuring head 2, and exits through the second wire passage hole 241 on the top side wall. The signal line 20 is then fixedly connected to the pressure sensor 24. Finally, the end cap 25 is tightened, and the second wire passage hole 241 is sealed with sealant. The assembly is very convenient and low in cost.

[0045] The following is a brief description of the usage process of this utility model: First, the signal line 20 of the pressure measuring head 2 is plugged into the pressure signal connector 12 of the host 1. Then, the mouthpiece 3 is tightly fitted onto the pressure measuring head 2. The test subject can perform the stress test by biting the mouthpiece 3. The pressure curve and pressure value are displayed on the display screen 11 of the host 1 in real time. By observing the pressure curve, it is possible to intuitively judge whether the patient's Valsalva maneuver is standard. The whole process is very simple and the test results are accurate, which helps doctors screen out occult obstructive hypertrophic cardiomyopathy.

[0046] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A pressure gauge for use in excitation tests, characterized in that, include: The host computer has a display screen; The pressure probe is electrically connected to the main unit; A mouthpiece is detachably and sealed to the pressure measuring head, so that the pressure measuring head can detect the pressure of the gas blown out through the mouthpiece during the excitation test and display it on the display screen, wherein the mouthpiece is provided with a breathable membrane.

2. The pressure gauge for excitation testing as described in claim 1, characterized in that, The mouthpiece includes a round tube portion and a rectangular mouthpiece portion. In use, the round tube portion is tightly fitted onto the pressure measuring head.

3. The pressure gauge for excitation testing as described in claim 2, characterized in that, The diameter of the circular tube portion is larger than that of the bite portion.

4. The pressure gauge for excitation testing as described in claim 2, characterized in that, The bite part is provided with an anti-dislodgement groove in the circumferential direction.

5. The pressure gauge for excitation testing as described in claim 1, characterized in that, The mouthpiece is made of silicone in one piece.

6. The pressure gauge for excitation testing as described in claim 2, characterized in that, The pressure testing head includes a connecting part and a handheld part. The top surface of the connecting part is recessed and a pressure sensor is installed thereon. When in use, the round tube part is tightly fitted onto the connecting part.

7. The pressure gauge for excitation testing as described in claim 6, characterized in that, There is an annular shielding flange between the connecting part and the handheld part, and the outer diameter of the annular shielding flange is more than 2 cm larger than the outer diameter of the connecting part.

8. The pressure gauge for excitation testing as described in claim 6, characterized in that, The connecting part is shaped like a frustum of a cone.

9. The pressure gauge for excitation testing as described in claim 1, characterized in that, The host is equipped with a pressure signal connector, and the signal line of the pressure probe is detachably connected to the pressure signal connector.

10. The pressure gauge for excitation testing as described in claim 1, characterized in that, The main unit is flat and has a flip-up support leg. When in use, the support leg opens so that the main unit can be tilted.

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