CN116615140A - Vital capacity meter - Google Patents

Abstract

The invention is characterized in more detail as a spirometer, in that: comprises a main body part and a blowing part which selectively penetrates at least a part of the main body part and is inserted according to the requirement. The main body part comprises an ultrasonic sensor for measuring the flow rate of the flowing fluid through the mouthpiece part; a pressure sensor for measuring the pressure of the flowing fluid through the mouthpiece; and a switch for switching to one of a flow rate measurement mode in which the flow rate of the fluid is measured by the ultrasonic sensor and a pressure measurement mode in which the pressure of the fluid is measured by the pressure sensor.

Description

Vital capacity meter

Technical Field

The present invention relates to a spirometer, and more particularly to a spirometer including a flow measurement mode and a pressure measurement mode.

Background

The detection of the vital capacity and heart rate at the time of respiratory examination provides useful information for the physical examination of whether the patient suffers from ventilation (ventilation) disorders and heart diseases (myocardial infarction, atrial fibrillation, etc.). The method of detecting the vital capacity can be broadly classified into two types, one of which is a method of directly measuring the change in the lung volume (lungvolume) during the respiration of the subject and the other is a respiratory airflow measuring method of sensing and detecting the airflow of air flowing inside and outside the lung during the respiration of the subject. In the past, the capacity of the lung to change is measured directly mainly electronically, but most recently, the respiratory airflow is measured mainly. Since a respiratory airflow measuring device such as a conventional clinical spirometer is used clinically, it is expensive and bulky, and it is actually difficult to carry a patient suffering from a chronic respiratory disease with him, and it is convenient to measure respiratory airflow. In the case of electronic spirometers made small and portable, the biggest difficulty is the miniaturization of the sensor elements for respiratory airflow measurement that convert biological variables that cannot be measured directly into measurable physical variables. In the conventional respiratory rate meter (pneumotachograph), it is necessary to insert a fluid resistor into a respiratory path (respiratory tube), but miniaturization cannot be achieved in a fluid resistor structure composed of a mesh (mesh) screen, a capillary (capillary), and the like. The turbine type apparatus (turbojet) also requires a rotating turbine to be mounted on a respiratory path (respiratory tube), and has problems of difficulty in downsizing and inaccuracy.

In order to solve the above problems, korean laid-open patent publication No. 10-2006-0091186 (2006.08.18) discloses a respiration detection and diagnosis apparatus employing an ultrasonic sensing method.

However, in the conventional case as described above, the flow rate or flow rate of the fluid can be measured only from the respiration of the user, and it is difficult to measure the pressure of the fluid from the respiration of the user.

Disclosure of Invention

Technical problem

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a spirometer capable of measuring the flow rate and pressure of a fluid according to the breathing of a user in the same flow path.

The problems to be solved by the present invention are not limited to the above-mentioned ones, and other problems to be solved by the present invention not mentioned here can be clearly understood from the following description by a person having ordinary skill in the art to which the present invention pertains.

Means for solving the problems

A spirometer according to an embodiment of the present invention is characterized in that: comprises a main body part and a blowing part which selectively penetrates at least a part of the main body part and is inserted according to the requirement. The main body part comprises an ultrasonic sensor for measuring the flow rate of the flowing fluid through the mouthpiece part; a pressure sensor for measuring the pressure of the flowing fluid through the mouthpiece; and a switch for switching to one of a flow rate measurement mode in which the flow rate of the fluid is measured by the ultrasonic sensor and a pressure measurement mode in which the pressure of the fluid is measured by the pressure sensor.

In addition, the ultrasonic sensor according to an embodiment of the present invention is characterized in that: the plurality of mouthpiece parts are provided on both sides with respect to the mouthpiece part when the mouthpiece part is inserted into the main body part.

In addition, the above-described plurality of ultrasonic sensors according to the embodiment of the present invention are characterized in that: the ultrasonic sensor is provided at an upper end of one side with respect to the blow-out portion, and the ultrasonic sensor is provided at a lower end of the other side, and is arranged along an imaginary line formed by inclining with respect to a longitudinal axis of the blow-out portion.

In addition, the main body according to an embodiment of the present invention is characterized in that: the air inlet is provided with an air inlet part and an air outlet part; the switch is formed to be linearly movable perpendicular to a longitudinal direction of the insertion hole, and is configured to be in the flow rate measurement mode when moved to one side and one end of the mouthpiece is opened, and is configured to be in the pressure measurement mode when moved to the other side and one end of the mouthpiece is closed.

In addition, according to an embodiment of the present invention, it is characterized in that: the control part is used for sending and storing the measured values of the ultrasonic sensor and the pressure sensor in real time, analyzing the respiration of the user based on the measured values and providing a proper exercise schedule for the user; and a display unit for outputting the analysis result and the exercise schedule of the control unit.

In addition, the mouthpiece section according to an embodiment of the present invention is characterized in that: comprises a space formed inside, a mouthpiece body formed in an open form and having a rectangular shape on the upper and lower surfaces, and ultrasonic films formed on the upper and lower ends of one side of the mouthpiece body; a pressure sensing hole provided at one side of the mouthpiece body to allow fluid flowing through the breath of the user to flow to the pressure sensor; and a filter part formed in a shape corresponding to the pressure sensing hole and detachable from the pressure sensing hole.

In addition, the main body according to an embodiment of the present invention is characterized in that: formed to have an elliptical cross section; the mouthpiece includes a cover part covering at least a part of the mouthpiece, the cover part being attached to the body when not in use, and preventing external foreign matter from flowing into the mouthpiece, and the cover part being separated from the body when in use, thereby measuring a flow rate or a pressure of fluid flowing through the mouthpiece.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the solution to the above problems, the spirometer of the present invention has the advantage that the flow rate and pressure of the fluid caused by the breathing of the user can be measured on the same flow path by switching the measurement mode without changing the mouthpiece.

In addition, in the spirometer of the present invention, the ultrasonic sensor is adjacently disposed at the outside of the ultrasonic film forming at least a part of the outer circumferential surface of the mouthpiece body to measure the flow rate, without affecting the fluid flowing by the respiration of the user, thereby having an advantage of measuring the respiratory flow rate of the user more accurately.

In addition, in the spirometer of the present invention, there are advantages in that: not only can flow be measured through accurate flow rate in a wide flow rate range, but also no respiratory resistance exists almost due to the adoption of a non-contact measurement method, and no problem occurs in the detection of the respiratory quantity of a patient or an infant; the volume of the measuring part required for measuring the respiratory quantity is reduced as much as possible, so that the dead Space (dead Space) for leading the patient to inhale the discharged air again is minimized, and the health of a measured person is not influenced; when the respiration rate is calculated from the measurement of the flow rate, a plurality of respiration rate-related measurement values such as FVC (Forced Expiratory Vital Capacity), PEF (Peak Expiratory Flow), FEV (Forced Expiratory Volume) can be immediately and accurately measured by using the existing clinical data and the like.

In addition, the spirometer of the present invention has the advantages of easy separation and cleaning, easy carrying, and self-measurement centered on the user without time and place restrictions.

The effects of the present invention are not limited to the effects described above, but effects of the present invention not mentioned here are clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description.

Drawings

Fig. 1 is a perspective view showing a spirometer construction according to embodiment 1 of the present invention.

Fig. 2 (a) and (b) are perspective views showing the mouthpiece structure of the spirometer according to embodiment 1 of the present invention, and fig. 3 (c) is a plan view.

Fig. 3 is a sectional view showing a spirometer construction according to embodiment 1 of the present invention.

Fig. 4 is an enlarged view showing the configuration of an ultrasonic sensor and a pressure sensor of a spirometer according to embodiment 1 of the present invention.

Fig. 5 is a drawing showing the internal pattern of the mouthpiece body of the spirometer according to embodiment 1 of the present invention.

Fig. 6 is a sectional view showing the movement of the switch of the spirometer according to embodiment 1 of the present invention.

Fig. 7 is a sectional view showing the movement of the switch of the spirometer according to embodiment 1 of the present invention.

Fig. 8 is a sequence diagram showing a control flow of the spirometer according to embodiment 1 of the present invention.

Fig. 9 is a drawing showing a display pattern of a spirometer according to embodiment 1 of the present invention.

Fig. 10 is a drawing showing a display pattern of a spirometer according to embodiment 1 of the present invention.

Fig. 11 is a drawing showing a display pattern of a spirometer according to embodiment 1 of the present invention.

Fig. 12 is a drawing showing a display pattern of a spirometer according to embodiment 1 of the present invention.

Fig. 13 (a) is a front view showing a detachable configuration of a cover portion of a spirometer according to embodiment 2 of the present invention.

Fig. 13 (b) is a front view showing a detachable configuration of a filter portion of a spirometer according to embodiment 2 of the present invention.

Fig. 14 is a sectional view showing a spirometer construction according to embodiment 2 of the present invention.

Fig. 15 is a front view showing a spirometer construction according to embodiment 3 of the present invention.

Fig. 16 is a sectional view showing a spirometer construction according to embodiment 3 of the present invention.

Detailed Description

The terms used in the present specification will be briefly described and the present invention will be specifically described.

The terms used in the present invention have been selected from general terms widely used at present in consideration of the functions of the present invention, but may be different depending on the intention or case of working on the person skilled in the art, the appearance of new technology, etc. Accordingly, the terms used in the present invention should not be defined as simple term names, but should be defined according to the meaning of the terms and the entire contents of the present invention.

Throughout the specification, when a certain portion "comprises" a certain constituent element, this means that other components are not excluded, but more other components may be included unless the specific mention is made.

Embodiments of the present invention are described in detail below with reference to the accompanying drawings so that a person having ordinary knowledge in the art to which the present invention pertains can easily perform the present invention. The invention may, however, be embodied in many different forms and is not limited to the embodiments described herein.

Specific matters concerning the problems to be solved by the present invention, means for solving the problems, effects of the invention and the like are included in the following examples and drawings. The advantages and features of the present invention, as well as methods of accomplishing the same, may be understood by reference to the accompanying drawings and the detailed description of embodiments.

The invention will be described in more detail below with reference to the attached drawings.

Referring to fig. 1, in the spirometer according to the preferred embodiment 1 of the present invention, a main body part 100 and a mouthpiece part 200 which is selectively inserted through at least a part of the main body part 100 as required are included. The main body 100 includes an ultrasonic sensor 110 for measuring a flow rate of the flowing fluid through the blowing port 200; a pressure sensor 120 for measuring the pressure of the flowing fluid through the mouthpiece 200; and a switch 130 for switching to one of a flow rate measurement mode for measuring the flow rate of the fluid by the ultrasonic sensor 110 and a pressure measurement mode for measuring the pressure of the fluid by the pressure sensor 120.

First, the main body 100 is provided. Referring to fig. 1, an example is that the main body 100 is formed in a rectangular shape with a space therein, and serves as a case for protecting the ultrasonic sensor 110 and the pressure sensor 120 provided therein. That is, the main body 100 separates the structure provided inside the main body 100 from the outside, and prevents foreign matters from penetrating into the inside. At this time, the outer circumferential surface of the body part 100 may be formed in a circular shape for the convenience of the user's grip.

Next, the above-described mouthpiece section 200 is provided. As an example, referring to fig. 2, the mouthpiece 200 may have a space formed therein, and a mouthpiece body 210 having a rectangular shape in an open state may be formed on the upper and lower surfaces thereof; and ultrasonic films 220 formed at one side upper end and the other side lower end of the mouthpiece body 210, respectively; and a pressure sensing hole 210 provided at one side of the mouthpiece body 210.

The mouthpiece body 210 is inserted into the insertion hole 140 to be described later to measure the breath of the user, and one end of the mouthpiece body 210 is formed with a step so that the user can breathe while sitting on the mouth. At this time, the mouthpiece body 210 may be formed in a circular shape on its outer circumferential surface for the convenience of a user's grip.

The ultrasonic film 220 is formed so that fluid flowing due to the respiration of the user cannot pass therethrough, and ultrasonic waves can pass therethrough. That is, the fluid flowing by the respiration of the user is caused to flow along the longitudinal direction of the mouthpiece body 210, and cannot pass through the ultrasonic film 220.

The pressure sensing hole 230 is formed to be spaced apart from the ultrasonic film 220, so that fluid flowing by the breathing of the user can flow to the pressure sensor 120 through the pressure sensing hole 230. In this case, the mouthpiece 200 may be detachable from the pressure sensing hole 230, and may further include a filtering unit (not shown) so that the fluid flowing through the breathing of the user can be filtered when passing through the pressure sensing hole 230. In other words, the filtering part is formed in a shape corresponding to the pressure sensing hole 230, coupled in such a manner as to be inserted into the pressure sensing hole 230, and reduces the risk of infection with respect to infectious diseases such as new coronavirus diseases by filtering foreign substances inside the fluid passing through the pressure sensing hole 230.

Here, the main body 100 includes the ultrasonic sensor 110. The ultrasonic sensor 110 measures the respiratory flow rate of the user by a difference between arrival times of ultrasonic waves propagating from upstream to downstream and ultrasonic waves propagating from downstream to upstream with respect to air flow caused by the respiration of the user.

More specifically, referring to fig. 3, the ultrasonic sensors 110 are provided in plural numbers, and are provided on both sides with reference to the mouthpiece 200 when the mouthpiece 200 is inserted into the body 100. At this time, the plurality of ultrasonic sensors 110 include an ultrasonic sensor 110 disposed above the mouthpiece 200 and an ultrasonic sensor 110 disposed below the other side, and are arranged along a virtual line formed obliquely with respect to the longitudinal axis of the mouthpiece. Further, the ultrasonic sensor 110 is disposed adjacent to the ultrasonic film 220.

For example, referring to fig. 3 and 4, if the user inhales or exhales through the mouthpiece 200, the user's breath flows into the mouthpiece 200. At this time, the 1 st ultrasonic sensor 110-1 provided at the upper end of one side transmits ultrasonic waves to the lower left and the 2 nd ultrasonic sensor 110-2 provided at the lower end of the other side transmits ultrasonic waves to the upper right with reference to the mouthpiece 200. That is, the 1 st ultrasonic sensor 110-1 and the 2 nd ultrasonic sensor 110-2 transmit ultrasonic waves in directions exceeding each other, and the arrival time of the transmitted ultrasonic waves is measured. Thereafter, the control unit 300, which will be described later, derives the breathing flow rate of the user from the measured values of the 1 st ultrasonic sensor 110-1 and the 2 nd ultrasonic sensor 110-2.

The principle of deriving the above-described user respiratory flow rate will be described in detail with reference to fig. 5. Here, V denotes a speed of the user breathing flow to be obtained, L denotes a distance between the 1 st ultrasonic sensor 110-1 and the 2 nd ultrasonic sensor 110-2, and θ denotes an angle between the 1 st ultrasonic sensor 110-1 and the 2 nd ultrasonic sensor 110-2.

Mathematical formula 1

Mathematical formula 2

Here, T ₁ Means the time T required for the ultrasonic wave transmitted from the 2 nd ultrasonic sensor 110-2 to reach the 1 st ultrasonic sensor 110-1 ₂ The time required for the ultrasonic wave transmitted from the 1 st ultrasonic sensor 110-1 to reach the 2 nd ultrasonic sensor 110-2 is represented by C, the speed of the ultrasonic wave.

Mathematical formula 3

Here, mathematical formula 3 is formed by combining mathematical formulas 1 and 2.

Mathematical formula 4

Here, mathematical formula 4 is an arrangement performed on mathematical formula 3. That is, as shown in the numerical formula 4, by measuring the 1 st ultrasonic sensor 110-1 and the 2 nd ultrasonic sensor 110-2 to transmit ultrasonic waves in directions to each other and by detecting the arrival time of the transmitted ultrasonic waves, the velocity of the user's breathing flow can be derived, and the flow rate can be derived by multiplying the derived velocity by the internal cross-sectional area of the mouthpiece body 210.

In this case, the ultrasonic sensor 110 is provided outside the mouthpiece body 210, and the turbulence of the fluid flowing inside the mouthpiece body 210 is minimized by the respiration of the user, so that the flow rate can be measured more accurately. In other words, in the conventional case, there is a problem that the flow of the breath is disturbed by the measurement sensor being provided in the flow path when the flow of the breath is measured, and thus accurate measurement cannot be performed. In contrast, the ultrasonic sensor 110 is disposed adjacent to the outside of the ultrasonic film 220 forming at least a part of the outer circumferential surface of the mouthpiece body 210 to measure the flow rate, and does not affect the fluid flowing by the breathing of the user. This has the advantage that the respiratory flow of the user can be measured more accurately.

The main body 100 includes a pressure sensor 120. The pressure sensor 120 measures the pressure of the fluid flowing through the pressure sensing hole 230 by the respiration of the user.

In this case, the spirometer of the present invention has an advantage of measuring the breathing flow rate and pressure of the user by using one flow path of the mouthpiece 200. That is, the mouthpiece body 210 forms a single flow path, and the breathing flow rate and pressure of the user in the single flow path can be measured.

More specifically, the main body 100 further includes an insertion hole 140 into which the mouthpiece 200 is inserted, and the switch 130 is formed to be linearly movable perpendicular to a longitudinal direction of the insertion hole 140, and is configured to be in the flow rate measurement mode when moving toward one side and one end of the mouthpiece 200 is opened, and is configured to be in the pressure measurement mode when moving toward the other side and one end of the mouthpiece 200 is closed.

The switch 130 functions to close or open either the upper surface or the lower surface of the mouthpiece body 210. For example, referring to fig. 6 and 7, when the switch 130 is moved to the left, the bottom of the mouthpiece body 210 is in an open state, and when it is moved to the right, the bottom of the mouthpiece body 210 is in a closed state. Here, when the bottom surface of the mouthpiece body 210 is opened, the flow rate measurement mode is set, and fluid generated by the breathing of the user flows from the respiratory organ of the user to the outside of the mouthpiece body 210 through the inside of the mouthpiece body 210. When the bottom of the mouthpiece body 210 is closed, the pressure measurement mode is set, and the fluid generated by the breathing of the user flows out from the respiratory organ of the user and stays inside the mouthpiece body 210. As a result, by not replacing the mouthpiece 200, the measurement mode of the switch 130 is switched, and thus, there is an advantage in that the flow rate and pressure of the fluid caused by the breathing of the user can be measured on the same flow path.

Next, a control part 300 for receiving and storing the measured values of the ultrasonic sensor 110 and the pressure sensor 120 in real time, analyzing the user's breath based on the measured values and providing the user with an appropriate exercise schedule, and a display part 400 for outputting the analysis result of the control part 300 and the exercise schedule are also included.

Referring to fig. 8, the control part 300 analyzes the respiration of the user based on the measured values of the ultrasonic sensor 110 and the pressure sensor 120, and functions to provide the user with an appropriate exercise schedule. The control unit 300 may include a wireless communication module, and may control the display unit 400 on a smart phone or the like of the user based on the breathing information of the user so as to output a movement schedule, feedback a movement state, analyze a movement result, a calorie consumption amount through a breathing movement, and a breathing movement game.

The display unit 400 also functions to output the analysis result and the exercise schedule of the control unit 300. That is, the values calculated by the ultrasonic sensor 110 and the pressure sensor 120 may be used to mark the vital capacity of the user as a digital value, and may output exercise schedule management, exercise state feedback, exercise result analysis, and respiratory exercise game. In addition, the display part 400 is provided in the form of a touch screen so that a user can easily perform a breath measurement or a breath movement game.

For example, referring to fig. 9, when power is applied to the spirometer of the present invention, the display unit 400 may set a Setting tag for Diagnosis, a User capable of viewing stored User information, record capable of viewing last measurement Record, screen brightness, volume, time, and the like.

In addition, referring to fig. 10, if the above-described diagnostics tab is selected, various respiration measurements such as FVC (Forced expiratory vital capacity test), FVL (Flow volume loop test), MVV (Maximum voluntary ventilation test), SVC (Slow vital capacity test) and MIP/MEP (MEP) may be performed. Here, FVC is diagnosed by obtaining a variable of forced expiratory volume (Forced vital capacity) after maximum forced expiration. In addition, tidal FVC breathes gently for 2-3 times as usual, and exhales with maximum effort after maximum inspiration, and obtains the variable of forced expiration volume (Forced vital capacity) for diagnosis. In addition, FVL exhales as forcefully as possible after maximum inhalation, re-inhales to the maximum extent, and further obtains the forceful inhalation volume variables (FIVC and PIF) for diagnosis. In addition, tidal FVL breathes gently for 2-3 times like usual, and exhales forcefully to the maximum after maximum inspiration, and breathes again to the maximum, and further obtains the forceful inspiration volume variables (FIVC and PIF) for diagnosis. In addition, MIP/MEP is to measure the Maximum Inspiratory Pressure (MIP) and the Maximum Expiratory Pressure (MEP) at the time of inspiration or expiration. In addition, MVV is the maximum inspiratory after rapid repetition of maximum expiratory in 12 seconds to calculate the maximum tidal volume per minute. Further, SVC breathes gently 3 to 5 times like normal times, then slowly inhales to the maximum extent, and exhales to the maximum extent, to measure lung volume and the like. For example, fig. 11 and 12 show the results of MIP/MEP detection. Here, the green dotted line on the graph represents the average value of normal persons, and the red dotted line represents the warning value. In addition, when the lighting is set on the right side of the MIP cross bar and the MEP cross bar and the deviation is within 10% in 3 times of the respiration of the user, the red light can be changed into the green light.

Hereinafter, a spirometer according to a preferred embodiment 2 of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, there is a difference in that the main body portion 102 is formed in an elliptical shape as compared with embodiment 1. In this embodiment, a constitution overlapping with embodiment 1 refers to the description of embodiment 1.

Referring to fig. 13 and 14, the body 102 may be formed in an oval shape for easy grasping. In this case, referring to fig. 13 (a), the mouthpiece 200 includes a cover 211 covering at least a part of the mouthpiece 200. That is, the cap 211 is attached to the body 102 so as to cover the end of the mouthpiece body 210. In other words, the cover 211 is detachably formed on the body 102, and the user can detach the cover 211 from the body 102 and measure respiration. Therefore, when not in use, the cover 211 is attached to the body 102 to prevent external foreign substances from flowing into the mouthpiece body 210, and when in use, the cover 211 is separated from the body 102, so that the flow rate or pressure of the fluid flowing through the mouthpiece 200 can be easily measured. At this time, if the cover 211 is detachable from the main body 102, it may be formed in any form, for example, a spiral groove is provided in an upper portion of the main body 102 to be detachable from the cover 211, a protrusion is provided on an inner circumferential surface of the cover in a shape corresponding to the spiral groove, and the cover 211 is mounted by rotating after being placed in a position adjacent to the upper portion of the main body 102.

The mouthpiece 200 may further include a filter 240 connected to the mouthpiece body 210, and a filter mouthpiece body 250 connected to an end of the filter 240. The filtering part 240 filters foreign matters in the fluid flowing due to the respiration of the user, thereby enabling more accurate respiration measurement. For example, one end of the filter 240 may be connected to the mouthpiece body 210, and the other end may be connected to the filter mouthpiece body 250, and may be selectively assembled as needed.

Hereinafter, a spirometer according to a preferred 3 rd embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the insertion hole 140 is formed so as to penetrate the middle of the body 103, as compared with embodiment 1, and there is a difference in this point. In this embodiment, a constitution overlapping with embodiment 1 refers to the description of embodiment 1.

Referring to fig. 15 and 16, the insertion hole 140 is formed to penetrate the middle of the body 103. That is, the mouthpiece main body 210 is inserted into an insertion hole 143 formed through the middle of the main body 100. Therefore, the body 103 is easily grasped with a uniform feeling, and the mouthpiece 200 is easily coupled to the body 103.

The body 103 includes a mounting portion 260 protruding outward from an inner peripheral surface of the body 103, and the mounting portion 260 includes the ultrasonic sensor 110. That is, the seating part 260 is formed at a position corresponding to the ultrasonic sensor 110, and the ultrasonic sensor 110 does not interfere with the outer circumferential surface of the mouthpiece body 210. In other words, when the mouthpiece body 210 is inserted into the insertion hole 140, the sinking length of the seating part 260 is longer than the length of the ultrasonic sensor 110 in the longitudinal direction in order to prevent the outer circumferential surface of the mouthpiece body 210 from interfering with the ultrasonic sensor 110. Therefore, there is an advantage in that the flow rate and pressure of the user's breath can be measured more accurately.

As described above, it is understood that a practitioner skilled in the art to which the invention pertains may embody the invention in different forms without changing the technical spirit or essential features of the invention.

The above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing detailed description, and all changes and modifications which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. A spirometer, characterized in that: comprises a main body part and a blowing port part which selectively penetrates at least a part of the main body part according to the requirement and is inserted, wherein the main body part comprises an ultrasonic sensor for measuring the flow rate of flowing fluid through the blowing port part; a pressure sensor for measuring the pressure of the flowing fluid through the mouthpiece; and a switch for switching to one of a flow rate measurement mode in which the flow rate of the fluid is measured by the ultrasonic sensor and a pressure measurement mode in which the pressure of the fluid is measured by the pressure sensor.

2. The spirometer of claim 1, wherein: the ultrasonic sensors are provided in plural numbers, and are provided on both sides with respect to the mouthpiece when the mouthpiece is inserted into the body.

3. A spirometer as in claim 2, wherein: the plurality of ultrasonic sensors include an ultrasonic sensor provided at an upper end of one side with respect to the blowout part, and an ultrasonic sensor provided at a lower end of the other side, and are arranged along an imaginary line formed by inclining with respect to a longitudinal axis of the blowout part.

4. The spirometer of claim 1, wherein: the main body part also comprises an insertion hole for inserting the blowing part; the switch is formed to be linearly movable perpendicular to a longitudinal direction of the insertion hole, and is configured to be in the flow rate measurement mode when moved to one side and one end of the mouthpiece is opened, and is configured to be in the pressure measurement mode when moved to the other side and one end of the mouthpiece is closed.

5. The spirometer of claim 1, wherein: the control part is used for sending and storing the measured values of the ultrasonic sensor and the pressure sensor in real time, analyzing the respiration of the user based on the measured values and providing a proper exercise schedule for the user; and a display unit for outputting the analysis result and the exercise schedule of the control unit.

6. The spirometer of claim 1, wherein: comprises a mouthpiece body having an open shape and a rectangular shape and having a space formed therein; ultrasonic films respectively formed at one side upper end and the other side lower end of the mouthpiece main body; a pressure sensing hole provided at one side of the mouthpiece body to allow fluid flowing through the breath of the user to flow to the pressure sensor; and a filter part formed in a shape corresponding to the pressure sensing hole and detachable from the pressure sensing hole.

7. The spirometer of claim 1, wherein: the main body part is formed to have an elliptical cross section; the mouthpiece includes a cover part covering at least a part of the mouthpiece, the cover part being attached to the body when not in use, and preventing external foreign matter from flowing into the mouthpiece, and the cover part being separated from the body when in use, thereby measuring a flow rate or a pressure of fluid flowing through the mouthpiece.