CN102641536A - Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device - Google Patents
Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device Download PDFInfo
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- CN102641536A CN102641536A CN2011100448531A CN201110044853A CN102641536A CN 102641536 A CN102641536 A CN 102641536A CN 2011100448531 A CN2011100448531 A CN 2011100448531A CN 201110044853 A CN201110044853 A CN 201110044853A CN 102641536 A CN102641536 A CN 102641536A
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Abstract
The invention provides an air leakage quantity obtaining method of a positive pressure breathing device. The method comprises the following steps that: firstly, a pressure and flow rate conversion formula is built, then, the pressure data measured by a pressure meter of the positive pressure breathing device is converted into flow rate data through the pressure and flow rate conversion formula, and next, the difference between the flow rate data and the standard flow rate is calculated to obtain the air leakage quantity. The air leakage quantity obtaining method has the advantage that the cost of the positive pressure breathing device can be reduced. In addition, the invention also provides the positive pressure breathing device capable of converting the pressure data into the flow rate data.
Description
Technical field
The invention relates to a kind of breathing equipment, and particularly relevant for the adquisitiones of a kind of positive pressure respiration device and air leakage thereof.
Background technology
The progress and development of medical device not only helps medical research and medical diagnosis on disease, for the quality of the life that promotes the patient good help is arranged also.Wherein, for the patient that the obstructive type sleep-respiratory is ended disease, the positive pressure respiration device helps to promote its sleep quality.And its service recorder also can provide the foundation of healthcare givers's Clinics and Practices.
Existing positive pressure respiration device is via face shield gas to be supplied to user.After the patient gets into sleep state, possibly face shield got loose because sleeping posture changes, and then make gas to external leakage.Like this, except the use effect that reduces the positive pressure respiration device, therefore the credibility of the relevant use data of its record more can have a greatly reduced quality.Therefore, how obtaining reliable use data, diagnose for the situation of user to help the healthcare givers, is a problem that is worth discussion.And existing positive pressure respiration device is to utilize the effusion meter that is installed in air outlet to obtain the flow data and then extrapolate situation and the air leakage whether gas leakage is arranged.Yet, because the cost of effusion meter is higher, so cause existing positive pressure respiration device to have the expensive shortcoming of cost.
Summary of the invention
The present invention provides a kind of positive pressure respiration device, to save production cost.
The present invention also provides a kind of adquisitiones of air leakage of positive pressure respiration device, to save the production cost of positive pressure respiration device.
The present invention proposes a kind of positive pressure respiration device, and it comprises casing, air pump, piezometer, control unit and record cell.Air pump, piezometer and control unit are configured in the casing.Casing is provided with first pore and second pore, and air pump is provided with air intake vent and air outlet.Air intake vent is communicated with first pore, and air outlet is communicated with second pore, and piezometer is between the air outlet and second pore.Control unit is electrically connected to pressure and takes into account air pump, and record cell is electrically connected to control unit.Control unit is suitable for the PRESSURE DATA that piezometer is measured and converts the flow data to, and with the flow data logging in record cell.
In one embodiment of the invention, aforesaid control unit comprises pressure and flow converse routine, converts the flow data to the PRESSURE DATA that piezometer is measured.
In one embodiment of the invention, aforesaid control unit comprises pressure and flow conversion element, becomes the flow data with the pressure data data that piezometer is measured.
In one embodiment of the invention, aforesaid casing also is provided with slot, and record cell is to be arranged in the slot with plugging, to electrically connect with control unit.
In one embodiment of the invention, aforesaid record cell comprise Security Digital (SD) (Secure Digital Memory Card, SD Card), standard flash memory (Compact Flash Card, CF Card) and hard disk one of them.
The present invention also proposes a kind of adquisitiones of air leakage of positive pressure respiration device, and it is the conversion formula of first build-up pressure and flow.Then, the conversion formula through pressure and flow converts the PRESSURE DATA that the piezometer of positive pressure respiration device records to the flow data.Then, the difference of calculated flow rate data and normal flow is to obtain air leakage.
In one embodiment of the invention, the method for building up of the conversion formula of aforesaid pressure and flow is following.At first, under a plurality of fixed rotating speeds, regulate the gas leakage degree of the face shield end of positive pressure respiration device, and measure the pressure of air outlet under each fixed rotating speed and the corresponding relation of flow of air pump in the air pump of positive pressure respiration device.Afterwards, according to the corresponding relation of pressure under each fixed rotating speed and flow, obtain pressure and the transfer function of flow under each fixed rotating speed, and the conversion formula of pressure and flow comprises the transfer function of a plurality of pressure and flow.
In one embodiment of the invention; The PRESSURE DATA that aforesaid conversion formula through pressure and flow records the piezometer of positive pressure respiration device converts the method for flow data to, and its step is that the rotating speed of obtaining air pump at that time according to PRESSURE DATA is earlier chosen the corresponding pressure and the transfer function of flow.Then, the transfer function through selected pressure and flow converts PRESSURE DATA to the flow data.
In one embodiment of the invention, the conversion formula of aforesaid pressure and flow be Q=f (R, P), Q is the flow data, R is the rotating speed of the air pump of positive pressure respiration device, and P is a PRESSURE DATA.
The adquisitiones of positive pressure respiration device air leakage of the present invention can convert the PRESSURE DATA that piezometer records to the flow data; And extrapolate situation and the air leakage whether gas leakage is arranged through it; The positive pressure respiration device need not be equipped with effusion meter like this, so can save cost.In addition, positive pressure respiration device of the present invention can the PRESSURE DATA that piezometer is measured convert the flow data to because of its control unit, so need not be equipped with effusion meter, escapable cost like this.
For let above and other objects of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows.
Description of drawings
Fig. 1 is the positive pressure respiration schematic representation of apparatus of the embodiment of the invention.
Fig. 2 is the flow chart of air leakage adquisitiones of the positive pressure respiration device of the embodiment of the invention.
Among the figure 100: positive pressure respiration device, 110. casings, 112. first pores, 114. second pores; 116. slot, 120. air pumps, 122. air intake vents, 124. air outlets; 130. piezometer, 140. control units, 150. record cells; 160,180,185. conduits, 170. face shields, S210～S230. step.
The specific embodiment
Fig. 1 is the positive pressure respiration schematic representation of apparatus of the embodiment of the invention.Please with reference to Fig. 1, the positive pressure respiration device 100 of present embodiment comprises casing 110, air pump 120, piezometer 130, control unit 140 and record cell 150.Air pump 120, piezometer 130 and control unit 140 are configured in the casing 110.Casing 110 is provided with first pore 112 and second pore 114, and air pump 120 is provided with air intake vent 122 and air outlet 124.Air intake vent 122 is communicated with first pore 112, and air outlet 124 is communicated with second pore 114, and piezometer 130 is between the air outlet 124 and second pore 114.Control unit 140 is electrically connected to piezometer 130 and air pump 120, and record cell 150 is electrically connected to control unit 140.
In above-mentioned positive pressure respiration device 100, first pore 112 for example is to be communicated with air intake vent 122 through conduit 180, and second pore 114 for example is to be communicated with air outlet 124 through conduit 185.In addition, the measurement section of piezometer 130 (figure is mark not) for example is to be positioned at conduit 185.
When air pump 120 runnings; Gas gets into casing 110 from first pore 112; Get into air pump 120 via conduit 180 and air intake vent 122 again; Then after air pump 120 pressurizations, discharge to flow to second pore 114, then flow to face shield 170 ends via conduit 160 again, to provide gas to user via conduit 185 from air outlet 124.In addition; Be arranged at piezometer 130 between the air outlet 124 and second pore 114 in order to measure the pressure at this place; And control unit 140 can become the flow data with piezometer 130 measured pressure data data, and with the flow data logging in record cell 150, for healthcare givers's reference.
Particularly, control unit 140 can be the circuit board assemblies that includes control chip, and is provided with pressure and flow converse routine, to convert piezometer 130 measured PRESSURE DATA to the flow data through pressure and flow converse routine.In another embodiment, pressure and flow converse routine also can be replaced with pressure and the flow conversion element with identical function.That is control unit 140 can comprise software or the hardware with pressure and flow translation function.In addition, for the ease of the access of data with carry, casing 110 also can be provided with slot 116, and record cell 150 for example is to be arranged in the slot 116 with plugging, to electrically connect with control unit 140.Record cell 150 for example be Security Digital (SD), high-speed flash memory card and hard disk one of them, but not as limit.
As stated, the positive pressure respiration device 100 of present embodiment is to use piezometer 130 to obtain gas flow indirectly.Because the cost of piezometer 130 is lower than the cost of effusion meter, so can reduce the production cost of the positive pressure respiration device 100 of present embodiment.In addition, above-mentioned control unit 140 also can be extrapolated the air leakage of face shield 170 ends according to the flow data, and wherein when air leakage was zero, expression face shield 170 ends did not produce the situation of gas leakage.
Below will specify how to convert piezometer 130 measured PRESSURE DATA to the flow data, and how obtain the air leakage of face shield 170 ends according to the flow data.
Fig. 2 is the flow chart of the air leakage adquisitiones of embodiment of the invention positive pressure respiration device.Please be simultaneously with reference to Fig. 1 and Fig. 2, the adquisitiones of the air leakage of the positive pressure respiration device of present embodiment comprises the following steps.At first, S210 is said like step, the conversion formula of build-up pressure and flow.The method for building up of the conversion formula of pressure and flow for example comprises the following steps.At first, under a plurality of fixed rotating speeds, regulate the gas leakage degree of face shield 170 ends of positive pressure respiration device 100, and measure the pressure of air outlet 124 under each fixed rotating speed and the corresponding relation of flow of air pump 120 in the air pump 120 of positive pressure respiration device 100.Afterwards, according to the corresponding relation of pressure under each fixed rotating speed and flow, obtain pressure and the transfer function of flow under each fixed rotating speed, and the conversion formula of said pressure and flow comprises the transfer function of a plurality of pressure and flow.The transfer function of each pressure and flow corresponds to the different rotating speeds of air pump 120.That is to say; Present embodiment is that the air pump 120 with positive pressure respiration device 100 is fixed on running under the fixed rotating speed; Then regulate the gas leakage degree of face shield 170 ends of positive pressure respiration device 100, and through piezometer 130 and the pressure of the air outlet 124 of effusion meter (figure does not show) measurement air pump 120 and the corresponding relation of flow.Then, according to the corresponding relation of pressure under the fixed rotating speed and flow, obtain pressure and a transfer function of flow under the fixed rotating speed.Then, repeat abovementioned steps again, to obtain the transfer function of a plurality of pressure and flow.The conversion formula of this pressure and flow for example is the transfer function that comprises a plurality of pressure and flow, i.e. Q=f (P).Wherein Q is the flow data, and P is a PRESSURE DATA.
Then, S220 is said like step, and the conversion formula through pressure and flow converts the PRESSURE DATA that the piezometer 130 of positive pressure respiration device 100 records to the flow data.In more detail, the method that converts PRESSURE DATA to the flow data for example is to choose the corresponding pressure and the transfer function of flow according to PRESSURE DATA in the rotating speed of obtaining air pump 120 at that time.Then, the transfer function through selected pressure and flow converts PRESSURE DATA to the flow data.For instance; When PRESSURE DATA is that rotating speed at air pump 120 is that per minute 5000 changes (being 5000RPM) time and obtains; Then choose the pressure of corresponding 5000RPM and the transfer function of flow; And in the transfer function of pressure that measured PRESSURE DATA input is selected and flow, to calculate the flow data.
Then, S230 is said like step, and the flow data that calculating is obtained and the difference of normal flow are to obtain air leakage.Here the normal flow of indication is meant the flow when face shield 170 ends do not produce the gas leakage situation.
Be noted that above-mentioned effusion meter is needs just when the conversion formula of build-up pressure and flow.One of design concept of the present invention is to utilize the conversion formula of pressure and flow to convert PRESSURE DATA to the flow data, but does not limit the mode of its application.That is to say; The step of air leakage that PRESSURE DATA is converted to the step of flow data and obtains face shield 170 ends according to the flow data is except can be directly the control unit 140 of positive pressure respiration device 100 is realized, the step that also can externally install the switch process that carries out PRESSURE DATA and flow data in (like computer) and extrapolate air leakage according to the flow data.Therefore; In one embodiment; Even the control unit of employed positive pressure respiration device does not possess the function that PRESSURE DATA is converted to the flow data; Also can the record cell that record PRESSURE DATA 150 be electrically connected to external device (ED), extrapolate the step of air leakage with the switch process that carries out PRESSURE DATA and flow data and according to the flow data.
In addition, in another embodiment, the conversion formula of pressure and flow also can be Q=f (R, P), wherein Q is the flow data, R is the rotating speed of air pump 120, and the P measured PRESSURE DATA that is piezometer 130.Like this, it is following to convert PRESSURE DATA the step of flow data to.At first, the rotating speed of obtaining air pump 120 with in the measured PRESSURE DATA of this rotating speed downforce meter 130.Then, through the conversion formula of pressure and flow, promptly (R P), converts PRESSURE DATA to the flow data to Q=f.
In sum, the adquisitiones of positive pressure respiration device of the present invention and air leakage thereof have at least advantage one of them:
1. the air leakage adquisitiones of positive pressure respiration device of the present invention can convert the PRESSURE DATA that piezometer records to the flow data; And extrapolate the air leakage of face shield end through it; So the positive pressure respiration device can not need be equipped with the expensive effusion meter of cost, and then save production cost.
2. positive pressure respiration device of the present invention can convert the PRESSURE DATA that piezometer records to the flow data because of its control unit, so need not be equipped with the expensive effusion meter of cost.Therefore, positive pressure respiration device of the present invention has lower production cost.
The above only is embodiments of the invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (9)
1. positive pressure respiration device; It is characterized in that: comprise casing, air pump, piezometer, control unit and record cell, said air pump, piezometer and control unit are configured in the casing, and said casing is provided with first pore and second pore; And said air pump is provided with air intake vent and air outlet; Said air intake vent is communicated with said first pore, and said air outlet is communicated with said second pore, and said piezometer is between said air outlet and said second pore; Said control unit is electrically connected to said pressure and takes into account said air pump; Said record cell is electrically connected to said control unit, and said control unit is suitable for the PRESSURE DATA that said piezometer is measured and converts the flow data to, and with said flow data logging in said record cell.
2. positive pressure respiration device according to claim 1 is characterized in that: said control unit comprises pressure and flow converse routine, converts said flow data to the said PRESSURE DATA that said piezometer is measured.
3. positive pressure respiration device according to claim 1 is characterized in that: said control unit comprises pressure and flow transition components, converts said flow data to the said PRESSURE DATA that said piezometer is measured.
4. positive pressure respiration device according to claim 1 is characterized in that: said casing also is provided with slot, and said record cell can be arranged in the said slot with plugging, to electrically connect with said control unit.
5. positive pressure respiration device according to claim 1 is characterized in that: said record cell comprise Security Digital (SD), high-speed flash memory card and hard disk one of them.
6. the adquisitiones of the air leakage of a positive pressure respiration device, it is characterized in that: the adquisitiones of the air leakage of said positive pressure respiration device comprises:
The conversion formula of build-up pressure and flow;
Conversion formula through said pressure and flow converts the PRESSURE DATA that the piezometer of said positive pressure respiration device records to the flow data; And
Calculate the difference of said flow data and normal flow.
7. the adquisitiones of the air leakage of positive pressure respiration device according to claim 6 is characterized in that: the method for wherein setting up the conversion formula of said pressure and flow comprises:
, under a plurality of fixed rotating speeds, regulate the gas leakage degree of the face shield end of said positive pressure respiration device, and measure the pressure of air outlet under each fixed rotating speed and the corresponding relation of flow of said air pump in the air pump of said positive pressure respiration device; And
According to the said pressure under each fixed rotating speed and the corresponding relation of flow, obtain pressure and the transfer function of flow under each fixed rotating speed, and the conversion formula of said pressure and flow comprises the transfer function of a plurality of said pressure and flow.
8. the adquisitiones of the air leakage of positive pressure respiration device according to claim 7 is characterized in that: the method that the said PRESSURE DATA that the conversion formula through said pressure and flow records the said piezometer of said positive pressure respiration device converts said flow data to comprises:
Obtain the rotating speed of said air pump at that time according to said PRESSURE DATA and choose the corresponding said pressure and the transfer function of flow; And
Transfer function through selected said pressure and flow converts said PRESSURE DATA to said flow data.
9. the adquisitiones of the air leakage of positive pressure respiration device according to claim 6; It is characterized in that: the conversion formula of said pressure and flow be Q=f (R, P), Q is said flow data; R is the rotating speed of the air pump of said positive pressure respiration device, and P is said PRESSURE DATA.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100448531A CN102641536A (en) | 2011-02-17 | 2011-02-17 | Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device |
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| CN2011100448531A CN102641536A (en) | 2011-02-17 | 2011-02-17 | Positive pressure breathing device and air leakage quantity obtaining method of positive pressure breathing device |
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| CN103977494A (en) * | 2014-05-29 | 2014-08-13 | 北京航空航天大学 | Method for estimating pressure control ventilation air leakage based on flow waveform |
| CN106730208A (en) * | 2017-01-18 | 2017-05-31 | 湖南明康中锦医疗科技发展有限公司 | The method and lung ventilator of self-adaptative adjustment air leakage |
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Application publication date: 20120822 |