CN107374635B - Pulmonary function instrument capable of preventing cross infection - Google Patents
Pulmonary function instrument capable of preventing cross infection Download PDFInfo
- Publication number
- CN107374635B CN107374635B CN201710706777.3A CN201710706777A CN107374635B CN 107374635 B CN107374635 B CN 107374635B CN 201710706777 A CN201710706777 A CN 201710706777A CN 107374635 B CN107374635 B CN 107374635B
- Authority
- CN
- China
- Prior art keywords
- pressure
- tapping hole
- pressure tapping
- column
- pulmonary function
- 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.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
Abstract
The invention provides a pulmonary function instrument capable of preventing cross infection, which comprises a flow sensor and a pulmonary function instrument host, wherein the flow sensor and the pulmonary function instrument host are detachably assembled together, the flow sensor is of a hollow pipe structure and comprises a main vent pipe and a pressure taking hole arranged on the pipe wall of the main vent pipe, and the outer wall of the main vent pipe is provided with a pressure taking hole column communicated with the pressure taking hole in a gas way, and the pulmonary function instrument is characterized in that the volume size of a cavity in the pressure taking hole column meets the following conditions: in the lung function detection process, gas exhaled or inhaled by a tester enters the pressure tapping hole column through the pressure tapping hole and is kept in the pressure tapping hole column without contacting a connecting pipe outside the flow sensor. The lung function instrument can isolate pollutants such as bacteria or viruses from entering other pipelines or cavities of the lung function detector, and avoid cross infection in the lung function test process.
Description
Technical Field
The invention relates to the field of lung function detection, in particular to a lung function instrument capable of preventing cross infection.
Background
Products such as lung function instruments, spirometers and the like in the existing market all adopt a method of adding a disposable breathing filter to a mouthpiece to avoid cross infection, although the mouthpiece and the filter are disposable, the disposable breathing filter cannot select the filter with the highest filtering efficiency, the higher the filtering efficiency is, the better the isolation effect is, the higher the resistance to air flow is, the larger the influence on the air flow of the lung function measurement is, the larger the measurement error is, so that the disposable breathing filter only can give consideration to the filtering efficiency, the filter with the smaller air flow resistance is selected, and the bacteria or viruses cannot be thoroughly isolated from entering a flow sensor despite the effect of isolating the bacteria and the viruses.
In order to avoid cross infection, after the lung function instrument is applied with the filter, the lung function instrument must be cleaned and disinfected regularly, the price of the medical lung function instrument is high, the structure is complex, a professional must detach the instrument by means of a special tool, the instrument is easy to damage, the lung function instrument needs to be dried thoroughly after disinfection, the lung function instrument needs to be corrected again before use, the whole process is complex, much time and cost are consumed, and the lung function instrument cannot be used for a long time.
Disclosure of Invention
In order to overcome the above disadvantages, an object of the present invention is to provide a flow sensor for lung function measurement capable of preventing cross-infection, which is a hollow tube structure and includes a main vent tube and a pressure tapping hole disposed on a wall of the main vent tube, wherein a pressure tapping hole column in gas communication with the pressure tapping hole is disposed on an outer wall of the main vent tube, and a volume of a cavity inside the pressure tapping hole column satisfies the following conditions: during the lung function detection process, the expired or inhaled gas of the tester enters the pressure measuring hole column through the pressure measuring hole and is kept in the pressure measuring hole column without contacting with a connecting pipeline outside the flow sensor.
According to an ideal gas state equation and a Boyle's law, under a certain temperature, the volume of quantitative gas is inversely proportional to the pressure of the gas, a proper pressure change range is set, and the change of the volume of the gas pressed into or overflowed from the pressure sampling Kong Zhuqiang can be limited in the pressure sampling hole column and cannot contact a connecting pipeline except the flow sensor.
Wherein, the volume of the inner cavity of the pressure tapping hole column meets the following condition V 1 >K(V 1 +V 2 )，V 1 To measure the internal volume of the pressure-tapping column, V 2 K is a constant, which is the volume of gas in the pressure conduction tube connected to the pressure tapping column.
The further K value is calculated by comparing the atmospheric pressure with the formula iv and Δ p to obtain the K value, wherein the formula iv:
where Δ p is the pressure difference between the expiratory air intake and the laryngeal opening, ρ is the fluid density, Q is the flow, A 1 Is the cross-sectional area of the air intake part, A 2 Is the cross-sectional area of throat part by regulating A 1 And A 2 And Δ p is obtained.
Preferably, the K value is 10%.
Furthermore, the main vent pipe mainly comprises an expiratory air inlet part, a first cone part, a throat part and a second cone part which are connected in sequence, a low-pressure-taking hole is arranged on the pipe wall of the throat part and is communicated with a low-pressure-taking hole column, a first high-pressure-taking hole is arranged on the pipe wall of the exhalation air inlet part and is communicated with a first high-pressure-taking hole column, the high-pressure-taking hole column is connected with the positive pressure end of the differential pressure sensor through a pressure guide pipe, the low-pressure-taking hole column is connected with the negative pressure end of the differential pressure sensor through the pressure guide pipe,
furthermore, a second high-pressure tapping hole is formed in the pipe wall of the second conical portion and communicated with a second high-pressure tapping hole column, and the second high-pressure tapping hole column is connected with the positive pressure end of the differential pressure sensor.
Further, the exhalation air inlet part and the throat part are cylindrical, the diameter of the exhalation air inlet part is larger than that of the throat part, the first conical part and the second conical part are in a circular truncated cone shape, and one ends of the first conical part and the second conical part, which are smaller in diameter, face the throat part respectively.
Furthermore, the outer wall of the column body of the pressure taking hole column is provided with a groove hole, and a sealing ring is assembled in the groove hole.
Further, the device also comprises a clamping device.
Furthermore, a clamping device on the flow sensor is detachably connected to a pressure guide pipe connected with the differential pressure sensor on the lung function instrument through a connecting seat.
The invention provides a method for preventing cross infection in a pulmonary function measuring process, which comprises the steps of providing a flow sensor, wherein the flow sensor is of a hollow tube structure and comprises a main vent tube and a pressure taking hole arranged on the tube wall of the main vent tube, a pressure taking hole column communicated with pressure taking hole gas is arranged on the outer wall of the main vent tube, and the volume size of a cavity in the pressure taking hole column meets the following conditions: during the lung function detection process, the expired or inhaled gas of the tester enters the pressure measuring hole column through the pressure measuring hole and is kept in the pressure measuring hole column without contacting with a connecting pipeline outside the flow sensor.
Wherein, the volume of the inner cavity of the pressure tapping column meets the following condition, V 1 >K(V 1 +V 2 )，V 1 To measure pressureVolume in pore column, V 2 Is the volume of gas in the pressure guide pipe connected with the pressure tapping hole column, and K is a constant.
The further K value is calculated by comparing the atmospheric pressure with the formula iv and Δ p to obtain the K value, wherein the formula iv:
where Δ p is the pressure difference between the expiratory air intake and the laryngeal opening, ρ is the fluid density, Q is the flow, A 1 Is the cross-sectional area of the air intake part, A 2 The cross-sectional area of the throat part is adjusted by A 1 And A 2 And Δ p is obtained.
Preferably, the K value is 10%.
The invention also provides a lung function instrument capable of preventing cross infection, which comprises a flow sensor, wherein the flow sensor and the lung function instrument host are detachably assembled together to form the lung function instrument. Flow sensor is hollow tube structure, including main breather pipe and locate the pressure tapping hole of main breather pipe wall, be equipped with on the main breather pipe outer wall with the communicating pressure tapping hole post of pressure tapping hole gas, the volume size of the inside cavity of pressure tapping hole post satisfies following condition: during the lung function detection process, the expired or inhaled gas of the tester enters the pressure measuring hole column through the pressure measuring hole and is kept in the pressure measuring hole column without contacting with a connecting pipeline outside the flow sensor.
Wherein, the volume of the inner cavity of the pressure tapping column meets the following condition, V 1 >K(V 1 +V 2 )，V 1 To measure the internal volume of the pressure well column, V 2 Is the volume of gas in the pressure guide pipe connected with the pressure tapping hole column, and K is a constant. Preferably, the K value is 10%.
The further K value is calculated by comparing the atmospheric pressure with the formula iv and Δ p to obtain the K value, wherein the formula iv:
where Δ p is the pressure difference between the expiratory air intake and the laryngeal opening, ρ is the fluid density, Q is the flow, A 1 Is the cross-sectional area of the air intake part, A 2 The cross-sectional area of the throat part is adjustedSection A 1 And A 2 And Δ p is obtained.
The lung function meter includes a differential pressure sensor. And the differential pressure sensor is connected with a pressure tapping hole column of the flow sensor through a pressure guide pipe.
Compared with the prior art, the invention has the beneficial effects that: the air in the pressure measuring hole column of the flow sensor can play a role in isolation, so that the gas exhaled by the testee cannot contact other instruments and equipment of the lung function instrument, such as a connecting seat or a conduit connected with the pressure measuring hole column, therefore, the connecting seat and the conduit which are repeatedly used cannot contact the gas of the testee, and the flow sensor can be replaced at any time, so that cross infection is avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of a disposable flow sensor having two pressure tapping columns.
Fig. 2 is a schematic view of the connection of the disposable flow sensor shown in fig. 1 to a differential pressure sensor.
FIG. 3 is a cross-sectional view of the change in position of an air column during exhalation for a disposable flow sensor having two pressure tapping hole columns.
FIG. 4 is a schematic cross-sectional view of a disposable flow sensor having three pressure tapping columns.
FIG. 5 is a schematic view of the disposable flow sensor of FIG. 4 in connection with a differential pressure sensor.
FIG. 6 is a cross-sectional view of the change in position of an air column during exhalation for a disposable flow sensor having three pressure tapping holes columns.
FIG. 7 is a schematic cross-sectional view of the change in position of a column of air as a disposable flow sensor having three columns of pressure taps inhales.
FIG. 8 is a schematic view of the connection of the flow sensor to the T-shaped pipe in embodiment 4.
Detailed Description
The flow sensor for lung function detection shown in fig. 1 to 7 is detachably assembled with a lung function device main body to form a lung function device. The flow sensor can prevent cross infection and comprises a main vent pipe and a pressure tapping hole arranged on the pipe wall of the main vent pipe, wherein a pressure tapping hole column communicated with the pressure tapping hole gas is arranged on the outer wall of the main vent pipe. The lung function tester breathes out or inhales gas through the main breather pipe, and the pressure sampling hole is the sampling point that the pressure difference sensor gathered the gas flow in the main breather pipe. The air duct of the differential pressure sensor is not directly connected with the pressure tapping hole, but is indirectly connected with the pressure tapping hole through the pressure tapping hole column. The volume of the inner cavity of the pressure tapping column meets the following conditions: during the lung function detection process, the gas exhaled or inhaled by a tester can be pressed into or overflowed from the pressure tapping hole column through the pressure tapping hole, but is limited in the pressure tapping hole column and cannot contact with a connecting pipeline outside the flow sensor.
Example 1 flow sensor with two pressure tapping columns
As shown in fig. 1 to 3, the main ventilation pipe of the flow sensor includes an expiratory air inlet portion 1, a first tapered portion 2, a throat portion 3, and a second tapered portion 4, which are connected in this order. The pipe wall of the throat part 3 is provided with a low-pressure measuring hole 31 and communicated with the low-pressure measuring hole column 5, and the pipe wall of the expiration air inlet part 1 is provided with a first high-pressure measuring hole 21 and communicated with a first high-pressure measuring hole column 6. The exhalation air inlet part 1 and the laryngeal opening part 3 are cylindrical, and the diameter of the exhalation air inlet part is larger than that of the laryngeal opening part. The first and second tapered portions 2, 4 have a truncated cone shape in cross section, and the smaller diameter ends of the first and second tapered portions face the throat portion.
As shown in fig. 2, the pressure guiding pipe 201 of the differential pressure sensor 200 is connected to the pressure taking hole post insertion hole 101 of the connection socket 100, and the pressure taking hole post insertion hole 101 is located corresponding to the low pressure taking hole post 5 and the first high pressure taking hole post 6 of the flow sensor. The pressure tapping hole column of the flow sensor shown in fig. 2 is inserted into the pressure tapping hole column jack 101 of the connecting base, and then the connection between the pressure guiding pipe of the differential pressure sensor and the pressure tapping hole of the flow sensor can be completed. The high-pressure tapping hole column is connected with the positive pressure end of the differential pressure sensor, and the low-pressure tapping hole column is connected with the negative pressure end of the differential pressure sensor. As shown in fig. 3, when a tester inhales gas into the main vent pipe of the flow sensor, the inhaled gas enters the low pressure tapping hole column 5 and the high pressure tapping hole column 6 through the low pressure tapping hole 31 and the high pressure tapping hole 21, respectively. The existing air 300 in the pressure tapping column and the pressure guiding pipe 201 is continuously compressed by the newly introduced gas 301 until the newly introduced gas in the pressure tapping column and the existing gas establish new balance. The volume of the inner cavity of the pressure tapping hole column meets the following conditions: after the gas exhaled by the tester enters the pressure tapping hole column through the pressure tapping hole, the newly entered gas can compress the air originally existing in the pressure tapping hole column and the air in the pipeline connected with the pressure tapping hole column, but the compressed air is always positioned in the pressure tapping hole column at the uppermost end. As shown in fig. 3, the volume of the cavity inside the pressure tapping column is sufficient to ensure that when a new equilibrium is established, the newly introduced gas 301 remains in the pressure tapping column and does not enter the pressure guiding pipe.
Example 2 flow sensor with three pressure tapping columns
As shown in fig. 4 to 7, the main ventilation pipe of the flow sensor includes an expiratory air inlet portion 1, a first tapered portion 2, a throat portion 3, and a second tapered portion 4, which are connected in this order. The pipe wall of the throat part 3 is provided with a low-pressure tapping hole 31 and communicated with a low-pressure tapping hole column 5, and the pipe wall of the first cone part 2 is provided with a first high-pressure tapping hole 21 and communicated with a first high-pressure tapping hole column 6. The pipe wall of the second cone part 4 is provided with a second high-pressure tapping hole 41 and communicated with the second high-pressure tapping hole column 7. The exhalation air inlet part 1 and the laryngeal opening part 3 are cylindrical, and the diameter of the exhalation air inlet part is larger than that of the laryngeal opening part. The first and second tapered portions 2, 4 have a truncated cone shape in cross section, and the smaller diameter ends of the first and second tapered portions face the throat portion.
As shown in fig. 5, the pressure guiding pipe 201 of the differential pressure sensor 200 is connected to the pressure tapping hole column insertion hole 101 of the connection socket 100, and the position of the pressure tapping hole column insertion hole 101 corresponds to the low pressure tapping hole column and the high pressure tapping hole column of the flow sensor. The first high-pressure tapping hole column 6 is connected with the positive pressure end of the first differential pressure sensor, the second high-pressure tapping hole column 7 is connected with the positive pressure end of the second differential pressure sensor, and the low-pressure ends of the two differential pressure sensors are respectively connected with the low-pressure tapping hole column 5 through a three-way pipe. As shown in fig. 6, when a tester inhales gas into the main vent pipe of the flow sensor, the inhaled gas enters the low pressure tapping hole column 5 and the high pressure tapping hole columns 6 and 7 through the low pressure tapping hole 31 and the high pressure sampling holes 21 and 41, respectively. The existing air 300 in the pressure tapping column and the pressure guiding pipe 201 is continuously compressed by the newly-entered gas 301 until the newly-entered gas in the pressure tapping column and the existing gas establish new balance. As shown in fig. 7, when a tester inhales gas into the main vent pipe of the flow sensor, the inhaled gas enters the low pressure tapping hole column 5 and the high pressure tapping hole columns 6 and 7 through the low pressure tapping hole 31 and the high pressure tapping holes 21 and 41, respectively. The existing air 300 in the pressure tapping column and the pressure guiding pipe 201 is continuously compressed by the newly-entered gas 301 until the newly-sucked gas in the pressure tapping column and the existing gas establish new balance. The volume of the inner cavity of the pressure tapping hole column meets the following conditions: after the tester expired or inhaled gas entered the pressure tapping hole post through the pressure tapping hole, the newly entered gas compressed the air that originally existed in the pressure tapping hole post and the air in the pipeline connected with it, but the compressed air was located in the pressure tapping hole post all the time the top. As shown in fig. 6 and 7, the volume of the internal cavity of the pressure tapping column is sufficient to ensure that the newly introduced gas 301 does not enter the pressure guiding pipe when the new equilibrium is established.
The flow sensor is disposable, and is detachably connected with the differential pressure sensor during use.
In order to ensure the air tightness of the connection between the pressure guiding pipe and the flow sensor during the test, a sealing element is arranged between the pressure taking hole column and the pipeline connected with the pressure taking hole column, for example, a groove 9 is arranged outside the pressure taking hole column of the flow sensor for storing a sealing ring 19.
In other embodiments, the flow sensor further comprises a clamping device capable of stably mounting the flow sensor on the lung function instrument main body. The clamping device can ensure that the flow sensor inserted into the lung function host cannot fall off in the using process, and the flow sensor can be smoothly pulled out from the lung function instrument host after the use is finished. The clamping device, such as but not limited to a flow sensor, is a clamping jaw 11 with a plum blossom-shaped structure, which has a certain elastic opening and closing, and a part 102 matched with the clamping jaw is arranged on the connecting seat or the flow sensor main body. For another example, the fastening device is a spring clip with a button structure.
According to bernoulli's principle, the fluid flow rate and pressure satisfy the equation:
where p is the pressure at a point in the fluid, v is the flow velocity at the point of the gas flow, ρ is the fluid density, g is the gravitational acceleration, h is the height at the point, and C is a constant. For gases, gravity can be ignored, and the formula is simplified to formula i:
the greater the flow rate of the gas stream, the lower the pressure. The flow and the flow velocity satisfy the formula II: v = Q/A, where Q is the flow rate and A is the cross-sectional area of the tube at that point in the gas flow. The air flow flows through the exhalation air inlet part and the laryngeal inlet part with equal flow but unequal cross-sectional areas, the flow velocity is also unequal according to a formula II, and the cross-sectional area of the air inlet part is A 1 At a flow velocity v 1 Pressure of p 1 (ii) a The cross-sectional area of the throat part is A 2 At a flow velocity v 2 Pressure of p 2 . According to formula I, the pressure differential can be derived
Substituting the formula II into the formula IV:
according to the detection standard of the pulmonary function instrument, the peak value of the detected flow is 14L/s, and the peak value of the pressure difference between the expiratory air inlet part and the laryngeal opening part is 10kPa by adjusting the sectional areas of the expiratory air inlet part and the laryngeal opening part. When no airflow is flowing through the flow sensor, p 1 、p 2 Are all at standard atmospheric pressure, and when there is airflow through the flow sensor, p 1 、p 2 The pressure can fluctuate within the range of 10kPa, the standard atmospheric pressure is about 101kPa, and therefore the pressure variation range of the pressure taking port is 10 percent.
According to an ideal gas state equation and the Boyle's law, the volume of quantitative gas is inversely proportional to the pressure of the gas at a certain temperature, and the formula III is satisfied: PV = C, formula (I)P is the pressure of the gas, V is the volume of the gas, and the volume in the pressure tapping column is set as V 1 The volume of gas in the pressure guide pipe is V 2 From equation III, P and (V) can be derived 1 +V 2 ) In inverse proportion, P decreases by 10%, then (V) 1 +V 2 ) The size is increased by 10 percent; otherwise, P is increased by 10% (V) 1 +V 2 ) 10% smaller, volume (V) 1 +V 2 ) Will cause the air column to fluctuate up and down as long as V is guaranteed 1 >10％(V 1 +V 2 ) The air flow passing through the flow sensor is only partially pressed into the pressure tapping hole column and does not enter the pressure guide pipe. Because the flow sensor is disposable, the air in the pressure taking hole column of the flow sensor can play a role in isolation, so that the gas exhaled by a testee cannot contact the connecting seat or the pressure guide pipe, the repeatedly used connecting seat and the repeatedly used pressure guide pipe cannot contact the gas of the testee, and cross infection is avoided.
Example 5 comparative test for prevention of Cross-infection
The two disposable flow sensors 10, the connecting base and the differential pressure sensor are sterilized and then connected to each other as shown in fig. 2 (experimental group 1) and 5 (experimental group 2), and then connected to the atomizer 401 and the 3L calibration cylinder 402 through the T-shaped tube 400, respectively, as shown in fig. 8. The colonies were prepared at 5X 10 using 0.9% physiological saline 8 5ml of cfu/ml standard strain suspension, starting an atomizer to generate bacterial aerosol particles, simulating human body forced expiration through a 3L calibration cylinder, mixing the bacterial aerosol particles and air, pushing the mixture into a flow sensor, continuously exhaling for 5 times, finally pulling out a disposable flow sensor, separating a connecting seat and a pressure guide pipe, respectively carrying out bacterial inoculation and culture by using a sampling solution, and carrying out bacterial colony counting after 48 hours of culture. The specific comparative experimental procedures are described in "development and development of respiratory filter special for lung function detection" (2003 Master's academic paper, guangzhou medical school, 2006, 5 months).
Table 1: sterility test results of Experimental group 1
Table 2: sterility test results of Experimental group 2
The experimental results are shown in tables 1 and 2, and the flow sensor can ensure that the connecting seat and the pressure guide tube connected with the flow sensor can still meet the sterile standard after the lung function detection is finished.
Claims (8)
1. Can prevent cross infection's pulmonary function appearance, including flow sensor and pulmonary function appearance host computer, flow sensor is in the same place with the detachable equipment of pulmonary function appearance host computer, flow sensor is hollow tube structure, including main breather pipe and locate the pressure tapping hole of main breather pipe wall, is equipped with on the main breather pipe outer wall and presses the hole post with the communicating pressure tapping of pressure tapping hole gas, its characterized in that, the volume size of the inside cavity of pressure tapping hole post satisfies following condition: the volume of the inner cavity of the pressure tapping column meets the following condition V 1 >K(V 1 +V 2 )， V 1 To measure the internal volume of the pressure well column, V 2 The volume of the gas in the pressure guide pipe connected with the pressure tapping hole column; and the K value is calculated by comparing the formula IV and the delta p with the atmospheric pressure to obtain the K value, wherein the formula IV is as follows:
where Δ p is the pressure difference between the expiratory intake and the laryngeal inlet, ρ is the fluid density, Q is the flow rate, A 1 Is the cross-sectional area of the air intake part, A 2 The cross-sectional area of the throat part is adjusted by A 1 And A 2 Obtaining delta p; the K value is 10%.
2. The pulmonary function instrument according to claim 1, wherein the main ventilation tube comprises an exhalation air inlet part, a first cone part, a throat part and a second cone part which are connected in sequence, a low pressure tapping hole is formed in a tube wall of the throat part and communicated with a low pressure tapping hole column, a first high pressure tapping hole is formed in a tube wall of the exhalation air inlet part and communicated with the first high pressure tapping hole column, the high pressure tapping hole column is connected with a positive pressure end of the differential pressure sensor through a pressure guide tube, and the low pressure tapping hole column is connected with a negative pressure end of the differential pressure sensor through a pressure guide tube.
3. The pulmonary function instrument of claim 2, wherein the wall of the second cone portion is provided with a second high pressure tapping hole and is communicated with a second high pressure tapping hole column, and the second high pressure tapping hole column is connected with the positive pressure end of the differential pressure sensor.
4. The pulmonary function device of claim 1, wherein the expiratory air inlet portion and the laryngeal inlet portion are cylindrical, the diameter of the expiratory air inlet portion is larger than that of the laryngeal inlet portion, the first conical portion and the second conical portion are in a circular truncated cone shape, and the smaller ends of the first conical portion and the second conical portion face the laryngeal inlet portion respectively.
5. The pulmonary function device of claim 1, wherein the outer wall of the pressure tapping column is provided with a groove, and the sealing ring is assembled in the groove.
6. The pulmonary function apparatus of claim 1, further comprising a chucking device.
7. The pulmonary function device of claim 1, wherein the clamp device of the flow sensor is detachably connected to the pressure tube of the pulmonary function device connected to the differential pressure sensor through the connecting seat.
8. The pulmonary function apparatus of claim 6, wherein the gripping device is a jaw of a plum blossom-shaped structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211206125.0A CN116236181A (en) | 2017-08-17 | 2017-08-17 | Lung function instrument |
| CN201710706777.3A CN107374635B (en) | 2017-08-17 | 2017-08-17 | Pulmonary function instrument capable of preventing cross infection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706777.3A CN107374635B (en) | 2017-08-17 | 2017-08-17 | Pulmonary function instrument capable of preventing cross infection |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211206125.0A Division CN116236181A (en) | 2017-08-17 | 2017-08-17 | Lung function instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107374635A CN107374635A (en) | 2017-11-24 |
| CN107374635B true CN107374635B (en) | 2022-10-04 |
Family
ID=60353709
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710706777.3A Active CN107374635B (en) | 2017-08-17 | 2017-08-17 | Pulmonary function instrument capable of preventing cross infection |
| CN202211206125.0A Pending CN116236181A (en) | 2017-08-17 | 2017-08-17 | Lung function instrument |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211206125.0A Pending CN116236181A (en) | 2017-08-17 | 2017-08-17 | Lung function instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107374635B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174250A (en) * | 2017-07-04 | 2017-09-19 | 台州亿联健医疗科技有限公司 | Disposable flow sensor, sensor handle and pulmonary function analysing system |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020500A1 (en) * | 1995-12-05 | 1997-06-12 | Pulmonary Interface, Inc. | Pulmonary interface system |
| AU7216900A (en) * | 1995-12-05 | 2001-03-15 | Impco Technologies, Inc. | Pulmonary interface system |
| US6203502B1 (en) * | 1997-03-31 | 2001-03-20 | Pryon Corporation | Respiratory function monitor |
| WO2008106961A2 (en) * | 2007-03-08 | 2008-09-12 | Filt Lungen- Und Thoraxdiagnostik Gmbh | Portable pneumotachograph for measuring components of an expiration volume, and method therefor |
| EP2186476A2 (en) * | 2008-11-17 | 2010-05-19 | Piston Kft. | Flow meter for pulmonary function tests |
| CN201622084U (en) * | 2010-01-29 | 2010-11-03 | 陕西仪新测控仪表有限公司 | Novel built-in throttling device |
| CN101903750A (en) * | 2007-11-03 | 2010-12-01 | 普拉德研究及开发股份有限公司 | Determination of density for metering a fluid flow |
| WO2013188458A2 (en) * | 2012-06-13 | 2013-12-19 | The Regents Of The University Of California | A personal lung function monitoring device capable of exhaled breath analysis |
| WO2015066812A1 (en) * | 2013-11-06 | 2015-05-14 | Oleg Grudin | Method and apparatus for measuring airway resistance and lung compliance |
| CN106108906A (en) * | 2016-08-29 | 2016-11-16 | 浙江亿联健医疗器械有限公司 | Flow transducer for lung function |
| WO2017087366A1 (en) * | 2015-11-16 | 2017-05-26 | Respirix, Inc. | Devices and methods for monitoring physiologic parameters |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134890A (en) * | 1990-03-20 | 1992-08-04 | Abrams Lawrence M | Fluid flow monitoring device |
| CA2086962A1 (en) * | 1992-01-21 | 1993-07-22 | Dee J. Neville | Sidestream flow sensor for spirometry |
| US7445601B2 (en) * | 2001-09-27 | 2008-11-04 | Charlotte-Mecklenburg Hospital | Non-invasive device and method for the diagnosis of pulmonary vascular occlusions |
| SE0203428D0 (en) * | 2002-11-20 | 2002-11-20 | Siemens Elema Ab | Passive gas sampling device |
| US8888711B2 (en) * | 2008-04-08 | 2014-11-18 | Carefusion 203, Inc. | Flow sensor |
| JP2015503388A (en) * | 2011-12-27 | 2015-02-02 | コーニンクレッカ フィリップス エヌ ヴェ | Respiratory measurement device with integrated filter |
| US9706946B2 (en) * | 2012-05-22 | 2017-07-18 | Sparo Inc. | Spirometer system and methods of data analysis |
| CN105025790B (en) * | 2013-01-08 | 2019-10-22 | 卡普尼亚公司 | Breathing for analysis selects |
| WO2014120842A1 (en) * | 2013-01-29 | 2014-08-07 | University Of Vermont And State Agricultural College | Device and method for lung measurement |
| US20140216168A1 (en) * | 2013-02-06 | 2014-08-07 | GSL Golden Shell Co Ltd. | Flow Meter and Method for Using Same |
| DE102013206111A1 (en) * | 2013-04-08 | 2014-10-09 | Robert Bosch Gmbh | Device for combined respiratory gas analysis and pulmonary function testing |
| US10758132B2 (en) * | 2013-11-27 | 2020-09-01 | Harinath Garudadri | Ambulatory diagnostic device and method thereof |
| CN208447593U (en) * | 2017-08-17 | 2019-02-01 | 浙江亿联康医疗科技有限公司 | It can prevent the lung function instrument of cross-infection |
-
2017
- 2017-08-17 CN CN201710706777.3A patent/CN107374635B/en active Active
- 2017-08-17 CN CN202211206125.0A patent/CN116236181A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997020500A1 (en) * | 1995-12-05 | 1997-06-12 | Pulmonary Interface, Inc. | Pulmonary interface system |
| AU7216900A (en) * | 1995-12-05 | 2001-03-15 | Impco Technologies, Inc. | Pulmonary interface system |
| US6203502B1 (en) * | 1997-03-31 | 2001-03-20 | Pryon Corporation | Respiratory function monitor |
| WO2008106961A2 (en) * | 2007-03-08 | 2008-09-12 | Filt Lungen- Und Thoraxdiagnostik Gmbh | Portable pneumotachograph for measuring components of an expiration volume, and method therefor |
| CN101903750A (en) * | 2007-11-03 | 2010-12-01 | 普拉德研究及开发股份有限公司 | Determination of density for metering a fluid flow |
| EP2186476A2 (en) * | 2008-11-17 | 2010-05-19 | Piston Kft. | Flow meter for pulmonary function tests |
| CN201622084U (en) * | 2010-01-29 | 2010-11-03 | 陕西仪新测控仪表有限公司 | Novel built-in throttling device |
| WO2013188458A2 (en) * | 2012-06-13 | 2013-12-19 | The Regents Of The University Of California | A personal lung function monitoring device capable of exhaled breath analysis |
| WO2015066812A1 (en) * | 2013-11-06 | 2015-05-14 | Oleg Grudin | Method and apparatus for measuring airway resistance and lung compliance |
| WO2017087366A1 (en) * | 2015-11-16 | 2017-05-26 | Respirix, Inc. | Devices and methods for monitoring physiologic parameters |
| CN106108906A (en) * | 2016-08-29 | 2016-11-16 | 浙江亿联健医疗器械有限公司 | Flow transducer for lung function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116236181A (en) | 2023-06-09 |
| CN107374635A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150025407A1 (en) | Devices and methods for generating an artificial exhalation profile | |
| US4723543A (en) | Endotracheal tube connector | |
| CN102233151B (en) | For making the device of volume maintenance in aspiration level of breathing gas | |
| US20120004571A1 (en) | Lung aerosol collection device | |
| JP2014100573A (en) | Method and system for dlco quality control testing | |
| CN109767679B (en) | Breath experimental device | |
| WO2019205295A1 (en) | Breather valve for improving performance of dual-pressure ventilator, and breathing device thereof | |
| CN107374635B (en) | Pulmonary function instrument capable of preventing cross infection | |
| CN102580213A (en) | Ventilation system of anesthesia machine and flow calibrating method of ventilation system | |
| EP2897527A1 (en) | Low dead space liquid trap | |
| WO2016082088A1 (en) | Measurement device and method for human respiratory system function | |
| US20190175862A1 (en) | Breathing tube assembly for respiratory gas measurement for steady-state breathing | |
| CN109529166A (en) | A kind of respiratory exchange device | |
| WO2018041073A1 (en) | Flow sensor, method and application for cross-infection prevention | |
| CN208447593U (en) | It can prevent the lung function instrument of cross-infection | |
| WO2018107567A1 (en) | Pressure indicator | |
| CN107242874A (en) | Flow sensor, spirometer and application for lung function tests | |
| CN208447594U (en) | It can prevent the flow sensor for lung function tests of cross-infection | |
| CN105592879B (en) | Columnar flow gas sampling and measuring system | |
| CN105388278A (en) | Hand-held breathing filtering device | |
| CN107374636A (en) | The flow sensor for lung function tests of cross-infection can be prevented | |
| CN203852686U (en) | Breathing tube, breathing tube assembly and breathing apparatus | |
| CN104257384B (en) | Handheld suction and filtration device | |
| CN107049317A (en) | The method of expiration or air-breathing is judged in lasting tidal air detection process | |
| CN207837551U (en) | The flow sensor and spirometer of lung function tests |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 317317 industrial cluster area of Baita Town Xianju County Taizhou city Zhejiang Province Applicant after: ZHEJIANG E-LINKCARE MEDICAL TECHNOLOGY Co.,Ltd. Address before: 317317 industrial cluster area of Baita Town Xianju County Taizhou city Zhejiang Province Applicant before: TAIZHOU E-LINKCARE MEDITECH Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |