CN210323074U - Air suction flow velocity meter - Google Patents
Air suction flow velocity meter Download PDFInfo
- Publication number
- CN210323074U CN210323074U CN201921650043.9U CN201921650043U CN210323074U CN 210323074 U CN210323074 U CN 210323074U CN 201921650043 U CN201921650043 U CN 201921650043U CN 210323074 U CN210323074 U CN 210323074U
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- CN
- China
- Prior art keywords
- main part
- slide rail
- thin slice
- inspiratory flow
- flow meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000003434 inspiratory effect Effects 0.000 claims description 15
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 8
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000003814 drug Substances 0.000 abstract description 11
- 238000005259 measurement Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 229940079593 drug Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 210000004072 lung Anatomy 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 210000002345 respiratory system Anatomy 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 2
- 208000019693 Lung disease Diseases 0.000 description 2
- GIIZNNXWQWCKIB-UHFFFAOYSA-N Serevent Chemical compound C1=C(O)C(CO)=CC(C(O)CNCCCCCCOCCCCC=2C=CC=CC=2)=C1 GIIZNNXWQWCKIB-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229960004017 salmeterol Drugs 0.000 description 2
- IKBKZGMPCYNSLU-RGVLZGJSSA-N tegaserod Chemical compound C1=C(OC)C=C2C(/C=N/NC(=N)NCCCCC)=CNC2=C1 IKBKZGMPCYNSLU-RGVLZGJSSA-N 0.000 description 2
- 229960002876 tegaserod Drugs 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- VOVIALXJUBGFJZ-KWVAZRHASA-N Budesonide Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1C[C@H]3OC(CCC)O[C@@]3(C(=O)CO)[C@@]1(C)C[C@@H]2O VOVIALXJUBGFJZ-KWVAZRHASA-N 0.000 description 1
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 229960004436 budesonide Drugs 0.000 description 1
- 230000001886 ciliary effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010579 first pass effect Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229960002848 formoterol Drugs 0.000 description 1
- BPZSYCZIITTYBL-UHFFFAOYSA-N formoterol Chemical compound C1=CC(OC)=CC=C1CC(C)NCC(O)C1=CC=C(O)C(NC=O)=C1 BPZSYCZIITTYBL-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007721 medicinal effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007910 systemic administration Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model provides a suction flow velocity meter, including hollow structure's main part and containing the mouth, the main part is still including first bottom and the second bottom of locating both ends respectively, all is equipped with the air vent on first bottom and the second bottom, contains the mouth and can dismantle the one end of locating the main part to communicate with the main part, locate the slider who is used for measuring the suction flow velocity in the main part, slider includes slide rail and thin slice, and the slide rail sets up along main part axis direction, and the one end of slide rail is equipped with the thin slice that prolongs the slide rail and remove, and the other end is fixed on first bottom, still is equipped with the elastic component between thin slice and the second bottom. This scheme simple structure, convenient operation, the effectual velocity of flow and the suction size of measuring the inhaled air provides effectual foundation for inhaling the medicine of using.
Description
Technical Field
The utility model relates to a medical equipment of lung, especially a current meter of breathing in.
Background
At present, for lung diseases, some medicines need to be absorbed through the lung, so that the treatment effect is quickly achieved; the pulmonary inhalation preparation can enable the medicine to reach the action part at a higher concentration, has quick response and convenient use, avoids the first pass effect of the liver, reduces the adverse reaction possibly generated by systemic administration, and is a common administration method for patients of a respiratory system. After the inhalation preparation is inhaled, the inhalation preparation needs to reach alveoli and is deposited before entering the blood circulation to be absorbed, and most of the medicine deposited in the upper respiratory tract is discharged out of the body by ciliary movement. Therefore, to increase the bioavailability of an inhaled formulation in the lungs, the rate of drug deposition in the alveoli must first be increased. The rate of inhalation and the diameter of the drug particles are the most important factors affecting the rate of drug deposition in the alveoli. Thus, the inhalation speed required for different inhalation formulations is different.
. The commonly used inhalation salmeterol tegaserod (salmeterol tegaserod aerosol) on the market requires an inhalation flow rate of > 30L/min, and is believed to be
All protectionTM(budesonide formoterol powder inhaler) required inhalation flow rates of > 60L/min. How much suction force is required to achieve the corresponding inhalation flow rate when the patient is using the inhalation formulation? Various expiratory flow rate measuring devices exist on the market today and have been widely used, but there is a lack of a measuring device for testing the inspiratory flow. When a patient with lung diseases is administrated, although the given amount of the medicine is accurate, the patient has weak persistence of the chronic disease and cannot know whether the flow rate is reached when the medicine is inhaled, so that the development of an inspiration flow meter for detecting the medicine inhalation speed is important.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a novel device; the provided inspiratory flow rate measuring meter is simple in structure and convenient to operate, can measure inspiratory flow rate, provides basis for inhalation administration, and can be used for carrying out inspiratory training on patients.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a current meter of breathing in, include hollow structure's main part and contain the mouth, the main part is still including first bottom and the second bottom of locating both ends respectively, all be equipped with the air vent in first bottom and the second bottom, contain the mouth can dismantle the one end of locating the main part, and with the main part intercommunication, be equipped with the slider who is used for measuring the flow rate of breathing in the main part, slider includes slide rail and thin slice, the slide rail sets up along main part axis direction, the one end of slide rail is equipped with the thin slice that prolongs the slide rail and remove, the other end is fixed on first bottom, still be equipped with the elastic component between thin slice and the second bottom, the main part is equipped with.
The advantage of this scheme lies in, the maximum velocity of flow when the size of suction and inhaled air when survey patient that can be quick breathes to judge whether can inhale and dose, the patient of being convenient for is to the direct absorption of medicine.
Furthermore, the slide rail is arranged on the central axis of the main body, so that the uniform stress of the thin sheet is facilitated, the thin sheet can move stably along the slide rail, and the clamping stagnation is avoided.
Furthermore, protruding sliding strips are symmetrically arranged on the sliding rail and arranged in parallel with the sliding rail, so that the thin sheet can be effectively prevented from rotating in the moving process to influence the measuring effect.
Furthermore, the thin sheet is provided with a through hole matched with the slide rail, sliding grooves matched with the raised slide bars are formed in two sides of the through hole, the thin sheet penetrates through the through hole and is arranged on the slide rail and tightly connected with the slide rail, and the edge of the thin sheet is tightly connected with the inner wall of the main body.
In addition, the slide rail can be provided with two, and the slide rail is arranged at equal intervals by taking the central axis of the main body as the axis.
Furthermore, the slide rail is cylindrical, the edges of the thin sheets are provided with grooves which are symmetrical by taking the through hole as a center, the inner wall of the main body is provided with symmetrical raised slide bars, and the grooves are clamped on the raised slide bars and slide along the raised slide bars.
Further, the main body is cylindrical, quadrangular, triangular or polygonal.
Furthermore, the pointer is arranged on the sheet, so that the moving distance of the sheet can be read visually, and the flow velocity can be judged.
Further, locate the scale that sets up along the axis direction in the main part, the pointer is directional scale all the time, and scale department is transparent material in the main part.
Furthermore, the elastic piece is an elastic piece which is a spring or a rubber band, so that the sheet can be conveniently reset, and the sheet can be conveniently measured and used next time.
The utility model has the characteristics of as follows:
1. the utility model has the advantages of being simple in structure and convenient in operation, the effectual velocity of flow and the suction size of measuring the inspired air provides effectual foundation for inhaling the dose.
2. The device can also be used for breathing in the training to patient, provides training repeatedly many times for patient's dynamics of breathing in strengthens, thereby reaches the dynamics that can inhale the dose.
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2-is a cross-sectional view of the slide rail;
FIG. 3 is a schematic diagram of a pointer structure;
FIG. 4-is another schematic view of the main structure;
FIG. 5-is a schematic view of another sheet configuration;
1-second bottom, 2-vent hole, 3-spring, 4-pointer, 5-sheet, 6-slide rail, 7-scale, 8-mouth, 9-main body, 10-convex slide bar, 11-first bottom, and 12-through hole.
Detailed Description
As shown in the figure: an air suction flow rate meter comprises a main body 9 with a hollow structure and a nozzle 8, wherein the main body 9 is cylindrical, quadrilateral, triangular or polygonal, preferably, the main body 9 is cylindrical, a round hole is arranged in the main body 9, the main body 9 further comprises a first bottom 11 and a second bottom 1 which are respectively arranged at two ends, vent holes 2 are respectively arranged on the first bottom 11 and the second bottom 1, the nozzle 8 is detachably arranged at one end of the main body 9, the main body 9 is internally provided with a sliding device for measuring the inspiration flow rate, the sliding device comprises a sliding rail 6 and a sheet 5, the sliding rail 6 is arranged between a first bottom 11 and a second bottom 1, the sliding rail is arranged along the axial direction of the main body 9, one end of the sliding rail 6 is provided with the sheet 5 moving along the sliding rail 6, the other end of the sliding rail 6 is fixed on the first bottom 11, an elastic part is also arranged between the sheet 5 and the second bottom 1, and the elastic part is used for resetting the sheet 5; after inhalation, the sheet 5 is pushed from the initial position of rest toward the mouth 8 by the air flow, and the maximum distance of movement of the sheet 5 is taken as a measurement result, and the sheet 5 returns to the initial position after the measurement is finished. The vent holes are large enough not to interfere with the flow of air therethrough.
Elastic component is the elastic component, what adopt in the elastic component this embodiment is spring 3, preferably, 3 covers of spring are established on slide rail 6, 1 fixed connection in spring 3's one end and second bottom, the other end and 5 fixed connection in thin slice, spring 3 is standard high accuracy spring 3, after thin slice 5 promoted by the air current and reached the maximum value, reset through spring 3, the flexible influence that does not receive the air current promotion of good spring 3 that resets, 3 repetitious usage of spring of being convenient for, can also guarantee spring 3's use precision simultaneously, can also add correcting unit according to measured needs in addition, current correcting unit is more relatively, no longer describe herein any more.
Preferably, a pointer 4 is hung in front of the sheet 5, a scale 7 arranged along the axial direction is arranged on the body 9, the pointer 4 always points to the scale 7, and the scale 7 on the body 9 is made of transparent material. When the device is used, the user holds the device horizontally, holds the mouth containing part 8 and sucks air forcibly, when the sheet 5 moves towards the direction of the mouth containing part 8 under the pushing of air flow, the pointer 4 is driven to move together, the scale value of the scale 7 pointed by the pointer 4 to the maximum position is the air suction flow rate value, the operator can conveniently and visually read the flow rate value, and then whether the inhalation administration can be carried out for treatment is judged. After use, the second bottom 1 of the device is set up downwards, the pointer 4 is returned to the initial position, the mouth 8 is sterilized or the disposable mouth is replaced, and the device can be used again.
Preferably, the slide rail 6 is arranged on the central axis of the main body 9, so that the sheet 5 can move uniformly along the slide rail 6 when in use, and the force applied to the sheet 5 is uniform; for preventing that rotation influences measurement accuracy takes place for thin slice 5 in the removal process, the symmetry is provided with protruding draw runner 10 on the slide rail 6, protruding draw runner 10 plays spacing and direction effect, protruding draw runner 10 is in slide rail 6 parallel arrangement, be equipped with the through-hole 12 that matches with slide rail 6 on the thin slice 5, the through-hole 12 both sides are equipped with the spout that matches with protruding draw runner 10, thin slice 5 wears to establish on slide rail 6 through-hole 12, and with slide rail 6 zonulae occludens, thin slice 5 edge and main part 9 inner wall zonulae occludens, prevent that thin slice 5 from taking place to deflect or slide in the removal process and being obstructed, can improve the area of contact between thin slice 5 and the slide rail 6 simultaneously, improve the holding power of slide rail 6 to thin slice 5, reduce the wearing and tearing to thin slice 5 in the slip process.
Contain mouth 8 for once only containing mouth 8, will contain during the use mouth 8 cover establish in the one end of main part 9 can measure, measure the back, will contain mouth 8 and take off, can carry out next survey with trading after, prevent cross infection, easy operation is convenient, and the tachometer of breathing in is effectual provides strong foundation for respiratory system doses, the improvement of the medical effect of being convenient for.
In another embodiment, the slide rail 6 is cylindrical, the edge of the sheet 5 is provided with grooves which are symmetrical by taking the through hole 12 as a center, the inner wall of the main body 9 is provided with symmetrical raised slide bars 10, and the grooves are clamped on the raised slide bars 10 and slide along the raised slide bars 10.
In another embodiment, two slide rails 6 are arranged and are arranged at equal intervals by taking the central axis of the main body 9 as the axis, so that the rotation of the sheet 5 in the sliding process is convenient to reduce, and the pointer 4 always points to the position of the scale 7.
According to the needs of measurement, the surface of the slide rail 6 and the inner side surface of the main body 9 are coated with lubricating oil, so that the frictional resistance between the thin sheet 5 and the slide rail 6 and the main body 9 is reduced, and the measurement precision is improved.
The utility model discloses a principle of the velocity of flow of breathing in measurement does:
according to the Poiseuille equation for fluid flow in a pipeline:
it can be seen that the flow (Q) is equal to the circumferential ratio (π) multiplied by the radius of the pipe (R) to the power of 4 and the pipe flowThe pressure difference (Δ P) between the inlet and inflow was divided by the viscosity of the fluid (η) and 8 times the length of the tubing (8L).
The flow (Q) is equal to the flow velocity (F) multiplied by the cross-sectional area (S) of the conduit. The equation can be written as
The left and right sides of the equation are divided by the cross-sectional area (S) of the conduit at the same time,
because S is pi R2Therefore there are
In which the length (L) of the pipe, the radius (R) of the pipe, and the viscosity (η ═ 1.98 × 10) of the air are measured-5) And the circumferential ratio (pi ═ 3.14) is a known constant; the pressure difference (. DELTA.P) is measured and the peak flow rate (F) is obtained.
The design utilizes the principle of a spring 3 dynamometer, when a patient inhales through a mouthpiece 8, air enters the device from an air inlet hole, the sheet 5 is driven to move forwards, and the maximum pulling force of the spring 3 pulled by the sheet 5 is the driving pressure/pressure difference (delta P) of inhaling. According to hooke's law, the tension (Δ P) of the spring 3 is equal to the stiffness coefficient (K) of the spring 3 multiplied by the amount of deformation (X); the spring 3 used in the design is a linear spring 3 which can satisfy Hooke's law, and the distance that the pointer 4 moves forward is the deformation amount (X). The stiffness coefficient (K) of the spring 3 can be determined by gravity: that is, a weight is pulled up by the spring 3, and the tension of the spring 3 is equal to the gravity (G) of the weight, so that
Namely, it is
m is weight, g is gravity acceleration, and x' is vertical deformation (vertical elongation) of the spring 3; the stiffness coefficient (K) of the spring 3 can be obtained. Calculating the inspiratory peak flow rate (F) by the formula
Can be written as
I.e. the peak flow rate (F) in the equation is scaled by the index 4 (X)
The stiffness coefficient (K) of the spring 3, the length (L) of the pipe, the radius (R) of the pipe can be measured, and the viscosity (η ═ 1.98 × 10) of the air-5) The spring 3 is elongated by a known constant length (X) which is the sliding distance of the air-driven foil 5, i.e. the final distance the pointer 4 moves during the measurement.
The preferred embodiments of the present invention have been described in detail above, but it is apparent that the present invention is not limited to the above embodiments. The technical idea of the utility model within the scope, can be right the utility model discloses a technical scheme carries out multiple equivalent variant, and these equivalent variants all belong to the utility model discloses a protection scope. In addition, it should be noted that the technical features described in the above embodiments may be separately and independently combined as long as they are within the technical concept of the present invention.
Claims (10)
1. An inspiratory flow rate meter comprising a main body (9) of hollow structure and a mouthpiece (8), characterized in that: main part (9) are still including locating first bottom (11) and second bottom (1) at both ends respectively, all are equipped with air vent (2) on first bottom (11) and second bottom (1), contain mouth (8) and can dismantle the one end of locating main part (9) to communicate with main part (9), establish in main part (9) and be used for measuring the slider of the velocity of flow of breathing in, slider includes slide rail (6) and thin slice (5), and slide rail (6) set up along main part (9) axis direction, and the one end of slide rail (6) is equipped with thin slice (5) that prolong slide rail (6) and remove, and the other end is fixed on first bottom (11), still is equipped with the elastic component between thin slice (5) and second bottom (1), main part (9) are equipped with the scale along the axis direction.
2. The inspiratory flow meter according to claim 1, wherein: the slide rail (6) is arranged on the central axis of the main body (9).
3. The inspiratory flow meter according to claim 2, wherein: the sliding rail (6) is symmetrically provided with protruding sliding strips (10), and the protruding sliding strips (10) are arranged in parallel on the sliding rail (6).
4. The inspiratory flow meter according to claim 3, wherein: be equipped with through-hole (12) that matches with slide rail (6) on thin slice (5), through-hole (12) both sides are equipped with the spout that matches with protruding draw runner (10), and thin slice (5) are worn to establish on slide rail (6) through-hole (12) to with slide rail (6) zonulae occludens, thin slice (5) edge and main part (9) inner wall zonulae occludens.
5. The inspiratory flow meter according to claim 1, wherein: the two sliding rails (6) are arranged and are arranged at equal intervals by taking the central axis of the main body (9) as the axis.
6. The inspiratory flow meter according to claim 1 or 5, wherein: the sliding rail (6) is cylindrical, the edge of the sheet (5) is provided with a groove which is symmetrical by taking the through hole (12) as a center, the inner wall of the main body (9) is provided with symmetrical raised sliding strips (10), and the groove is clamped on the raised sliding strips (10) and slides along the raised sliding strips (10).
7. The inspiratory flow meter according to claim 6, wherein: the main body (9) is cylindrical, quadrangular, triangular or polygonal.
8. The inspiratory flow meter according to claim 6, wherein: and a pointer (4) is arranged on the sheet (5).
9. The inspiratory flow meter according to claim 8, wherein: locate scale (7) that set up along the axis direction on main part (9), pointer (4) point to scale (7) all the time, and scale (7) department is transparent material on main part (9).
10. The inspiratory flow meter according to claim 1, wherein: the elastic piece is a spring (3) or a rubber band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921650043.9U CN210323074U (en) | 2019-09-30 | 2019-09-30 | Air suction flow velocity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921650043.9U CN210323074U (en) | 2019-09-30 | 2019-09-30 | Air suction flow velocity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210323074U true CN210323074U (en) | 2020-04-14 |
Family
ID=70134029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921650043.9U Expired - Fee Related CN210323074U (en) | 2019-09-30 | 2019-09-30 | Air suction flow velocity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210323074U (en) |
-
2019
- 2019-09-30 CN CN201921650043.9U patent/CN210323074U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |