CN105334875B - A kind of method and device adjusting anesthesia machine flow meter flow - Google Patents

A kind of method and device adjusting anesthesia machine flow meter flow Download PDF

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Publication number
CN105334875B
CN105334875B CN201410389818.7A CN201410389818A CN105334875B CN 105334875 B CN105334875 B CN 105334875B CN 201410389818 A CN201410389818 A CN 201410389818A CN 105334875 B CN105334875 B CN 105334875B
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flow
value
final goal
flowmeter
flow value
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CN201410389818.7A
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Chinese (zh)
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CN105334875A (en
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张耀东
欧阳亮
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北京谊安医疗系统股份有限公司
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Abstract

The invention discloses it is a kind of adjust anesthesia machine flow meter flow method and device, the method includes:Obtain the final goal flow value of flowmeter;The final goal flow value is compared with preset flow value;When the final goal flow value is less than the preset flow value, determine that the final goal flow value of the flowmeter is final goal small flow rate values, and determine the time present flow rate in the flowmeter adjusted to final goal small flow rate values;The time is divided into N number of period;Flow in each period adjusts the flowmeter respectively, so that the flow value of the last one period reaches the final goal small flow rate values.The embodiment of the present invention is for small flow, it is adjusted by the way of time segment, and the final flow rate of flowmeter is made to reach final goal flow value, the embodiment of the present invention, which can be obtained, by experiment simulation can shorten the time adjusted the present flow rate of anesthesia machine flow meter to final goal small flow rate values.

Description

A kind of method and device adjusting anesthesia machine flow meter flow

Technical field

The present invention relates to Anesthesia machine control technology field more particularly to it is a kind of adjust anesthesia machine flow meter flow method and Device.

Background technology

Flowmeter is an important component of Anesthesia machine, and doctor can be suitable to be provided to patient by adjusting the flow of flowmeter The required gas of the operation such as oxygen, laughing gas of amount.

Largely using PID, (proportion-integral-derivative, proportional, integral-are micro- for existing Anesthesia machine Point) control mode control electronic flowmeter flow, the pid control mode is the target flow value detected according to sensor Ratio circuit, integrating circuit and proportionality coefficient, the time of integration and Differential time in differential circuit are adjusted respectively, to make flow The flow of meter reaches target flow value.The range of flow of pid control mode control is generally 0-20L/min, and usual 3L is below Flow is known as small flow, and the flow of 3L or more is known as big flow.

Control mode of the existing Anesthesia machine in entire range of flow is identical, and identical pid control mode will be accomplished The quick response of gamut is relatively difficult at present, and that usually accomplishes big flow fast and stable reaches preset target flow value, The response time of small flow is not taken into account thus.For example, when big flow reaches the response of fast and stable, the response of small flow Time is typically 3-5 times of big flow response time;When the response speed of small flow is accelerated, the feelings in big flow are may result in There is oscillatory occurences under condition.

Invention content

In view of this, an embodiment of the present invention provides a kind of method and devices adjusting anesthesia machine flow meter flow, with contracting The short present flow rate by anesthesia machine flow meter adjusts the time to final goal small flow rate values.

On the one hand, an embodiment of the present invention provides it is a kind of adjust anesthesia machine flow meter flow method, the method includes:

Obtain the final goal flow value of flowmeter;

The final goal flow value is compared with preset flow value;

When the final goal flow value is less than the preset flow value, the final goal flow of the flowmeter is determined Value be final goal small flow rate values, and determine by the flowmeter present flow rate adjust to final goal small flow rate values when Between;

The time is divided into N number of period, the N is the positive integer more than 1;

A target flow value is set in each period respectively, and the flowmeter is adjusted according to each target flow value In the flow of the target flow value corresponding period, so that the flow value of flow value reaches institute at the end of the last one period State final goal small flow rate values.

Further, the method further includes:

When the final goal flow value is greater than or equal to the preset flow value, the final mesh of the flowmeter is determined Mark flow value is final goal big flow value, and the present flow rate for adjusting the flowmeter reaches the final goal big flow value.

Further, a target flow value is set in each period respectively, and is adjusted according to each target flow value Flow of the flowmeter in the target flow value corresponding period so that at the end of the last one period flowmeter stream Magnitude reaches the final goal small flow rate values, including:

Obtain flow fiducial value;

The target flow value of each period is determined according to the final goal flow value and the flow fiducial value, In, the target flow value of the last one period is equal to the final goal small flow rate values;

Flow of the flowmeter in the target flow value corresponding period is adjusted according to determining each target flow value, with The flow value of the last one period is set to reach the final goal small flow rate values.

Further, the target stream of each period is determined according to the final goal flow value and the flow fiducial value Magnitude specifically includes:

Determine the regulations speed V, V=(the A-B)/N of the flowmeter, wherein A is flow fiducial value, and B is final mesh Mark small flow rate values, and A>B, N are the period number divided;

Determine the target flow value M, the M=A-V*i of each period, wherein i be i-th of period, i 0,1, 2……N。

Further, it determines the present flow rate adjusting in the flowmeter to the time of final goal small flow rate values, tool Body includes:It is adjusted to the time of final goal small flow rate values and by flow according to the preset present flow rate by flowmeter Present flow rate in meter is adjusted will be in the flowmeter to the proportionate relationship determination between the time of final goal big flow value Present flow rate adjusts the time to final goal small flow rate values.

Further, the proportionate relationship is:T1=a*T2, wherein T1 is to adjust the present flow rate of flowmeter to most The time of the whole small flow of target, T2 are by the time of the present flow rate adjusting of flowmeter to final goal big flow, and the value of a is 1.4-1.6。

On the other hand, the embodiment of the present invention additionally provides a kind of device adjusting anesthesia machine flow meter flow, described device Including:

Acquisition module, the final goal flow value for obtaining flowmeter;

Comparison module, for the final goal flow value to be compared with preset flow value;

Determining module, for when the final goal flow value is less than the preset flow value, determining the flowmeter Final goal flow value be final goal small flow rate values, and determine and adjust the present flow rate in the flowmeter to final mesh Mark the small flow rate values time;

Division module, for the time to be divided into N number of period, the N is the positive integer more than 1;

First adjustment module, for setting a target flow value in each period respectively, and according to each target stream Magnitude adjusts flow of the flowmeter in the target flow value corresponding period, so as to be flowed at the end of the last one period The flow value of magnitude reaches the final goal small flow rate values.

Further, described device further includes:

Second adjustment module is more than or waits for the final goal flow value for the comparison result when the comparison module When the preset flow value, the final goal flow value of the flowmeter is determined for final goal big flow value, described in adjusting The present flow rate of flowmeter reaches the final goal big flow value.

Further, first adjustment module, including:

Acquiring unit, for obtaining flow fiducial value;

Determination unit, the mesh for determining each period according to the final goal flow value and the flow fiducial value Mark flow value, wherein the target flow value of the last one period is equal to the final goal small flow rate values;

Unit is adjusted, for adjusting flowmeter when the target flow value is corresponding according to determining each target flow value Between section flow so that the flow value of the last one period reaches the final goal small flow rate values.

Further, the determination unit, is specifically used for:

Determine the regulations speed V, V=(the A-B)/N of the flowmeter, wherein A is flow fiducial value, and B is final mesh Mark small flow rate values, and A>B, N are the period number divided;

Determine the target flow value M, the M=A-V*i of each period, wherein i be i-th of period, i 0,1, 2……N。

The method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow is less than final goal flow value pre- If the small flow of flow value, is divided into the N periods by the flow-rate adjustment time first, then adjusts and flow in each period respectively Amount so that the final flow rate of flowmeter reaches final goal flow value, and adjusting provided by the invention can be obtained by experiment simulation The method of anesthesia machine flow meter flow, which can shorten, adjusts the present flow rate of anesthesia machine flow meter to final goal small flow rate values Time.

Description of the drawings

Fig. 1 is the flow chart of the method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow;

Fig. 2 is the analogous diagram for the adjusting anesthesia machine flow meter method of flow that the prior art provides;

Fig. 3 is the analogous diagram provided in an embodiment of the present invention for adjusting anesthesia machine flow meter method of flow;

Fig. 4 is to adjust to flow in each period in the method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow The step of amount, schemes;

Fig. 5 is to determine each period target in the method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow The step of flow value, schemes;

Fig. 6 is a preferred embodiment of the method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow Flow chart.

Fig. 7 is the schematic diagram of the device provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow.

Specific implementation mode

The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just In description, only some but not all contents related to the present invention are shown in the drawings.

Fig. 1 shows the flow chart of the method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow, the present invention The executive agent of embodiment can device in order to control.As shown in Figure 1, details are as follows for the flow:

Step 101, the final goal flow value for obtaining flowmeter.

In the present embodiment, the final goal flow value can according to the patient's condition be set by doctor, described final Target flow value is the attainable peak flow values of flow in flowmeter, for example, the final goal flow value got is 4L illustrates that the flow value in the flowmeter is up to 4L.

The final goal flow value is compared by step 102 with preset flow value.

In the present embodiment, the preset flow value usually can be obtained rule of thumb.Due in actual application, working as control When the regulative mode of device processed is consistent, the flow response speed when final goal flow value of flowmeter is less than 3L and final goal stream Flow response speed when magnitude is more than 3L differs greatly, so generally can the preset flow value be set as 3L.It is above-mentioned to carry To flow response speed device adjusts the present flow rate in flowmeter and reaches time of final goal flow value in order to control.

Step 103, when the final goal flow value be less than or equal to the preset flow value when, determine the flowmeter Final goal flow value be final goal small flow rate values, and determine and adjust the present flow rate in the flowmeter to final mesh Mark the time of small flow rate values.

In the present embodiment, when the final goal flow value is more than the preset flow value, the flowmeter is determined Final goal flow value is final goal big flow value, when final goal flow is big flow value, without carrying out subsequent step, Directly according to traditional regulative mode, the present flow rate of flowmeter is adjusted to final goal big flow.

The time is divided into N number of period by step 104, and the N is the positive integer more than 1.

In the present embodiment, can be divided into the time segments such as N number of the time, the time can also be divided into N The period of a not decile.

Step 105, respectively each period set a target flow value, and according to each target flow value adjust institute State flow of the flowmeter in the target flow value corresponding period so that at the end of the last one period flow value flow Value reaches the final goal small flow rate values.

Can be each period to distribute a target flow value in the present embodiment, it is general to require in first period Target flow value is larger, and when reaching the time of setting, the flow in flowmeter is not up to the target flow value of the period.Control Device processed adjusts the flow of flowmeter within each period according to traditional regulative mode.First period flowmeter it is current Flow is 0L, and the present flow rate of each period is the flow in flowmeter at the end of previous time period later, while to be protected At the end of demonstrate,proving the last one period, the flow in flowmeter reaches final goal small flow rate values.

Fig. 2 shows the analogous diagram for the adjusting anesthesia machine flow meter method of flow that the prior art provides, Fig. 3 shows this hair The analogous diagram for the adjusting anesthesia machine flow meter method of flow that bright embodiment provides, Fig. 2 and Fig. 3 are that 1L is with final goal flow Example.In Fig. 2 and Fig. 3, abscissa is the time, and ordinate is voltage value, since flow value is usually in the form of a voltage in controller It indicates.Curve 1 is the corresponding voltage value of final goal flow value, and curve 2 is the corresponding voltage value of flow in flowmeter.It is controlling The flow and electricity in the correspondence and flowmeter between final goal flow value and voltage would generally be preset in device processed In correspondence between pressure, such as curve 1, when voltage is 0V, expression final goal flow value is 0L, when voltage is 1.1V When, expression final goal flow value is 1L;In curve 2, when voltage is 0V, indicates that the flow in flowmeter is 0L, work as voltage For 3.9V when, indicate flowmeter in flow be 1L.In Fig. 2 and Fig. 3, the voltage in curve 2 is risen to the time of 3.9V by 0V As controller adjusts the time that the flow in flowmeter is reached final goal flow value 1L by 0L, can from Fig. 2 and Fig. 3 Go out, using method provided in an embodiment of the present invention shorten by the present flow rate of flowmeter adjust to final goal flow value when Between.

The method provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow is less than final goal flow value pre- If the small flow of flow value, is divided into the N periods by the flow-rate adjustment time first, then target is set in each period respectively Flow value, and flow is adjusted according to the target flow value of setting so that the final flow rate of flowmeter reaches final goal flow value, The method provided by the invention for adjusting anesthesia machine flow meter flow, which can be obtained, by experiment simulation can shorten anesthesia machine flow The present flow rate of meter adjusts the time to final goal small flow rate values.

It is determined in above-described embodiment, in step 103 and adjusts the present flow rate in the flowmeter to the small stream of final goal The time of magnitude, specifically it may include:It is adjusted to the small flow of final goal according to the preset present flow rate by flowmeter The time of value and by flowmeter present flow rate adjust between the time of final goal big flow value proportionate relationship determine Present flow rate in the flowmeter is adjusted into the time to final goal small flow rate values.The proportionate relationship is:T1=a*T2, Wherein, T1 is by the time of the present flow rate adjusting of flowmeter to the small flow of final goal, and T2 is by the present flow rate of flowmeter The time of final goal big flow is adjusted, the value of a can be 1.4-1.6.

In above-described embodiment, step 105 sets a target flow value in each period respectively, and according to each target Flow value adjusts flow of the flowmeter in the target flow value corresponding period, so that at the end of the last one period The flow value of flow value reaches the final goal small flow rate values, specifically may include step shown in Fig. 4:

Step 401 obtains flow fiducial value.

In this step, flow fiducial value is typically larger than the preset flow value, it is preferred that desirable 5L.

Step 402, the target stream that each period is determined according to the final goal flow value and the flow fiducial value Magnitude, wherein the target flow value of the last one period is equal to the final goal small flow rate values.

In this step, when the length difference of each period, it can be tested by Multi simulation running and determine each period Target flow value.When the length of each period is identical, the target stream that step shown in fig. 5 determines each period can be used Magnitude, as shown in figure 5, the step may include:

Step 501, the regulations speed V, V=(the A-B)/N for determining the flowmeter, wherein A is flow fiducial value, B For final goal small flow rate values, and A>B, N are the period number divided.

Step 502, the target flow value M, the M=A-V*i for determining each period, wherein i is i-th of period, I is 0,1,2 ... N.

Step 403 adjusts flowmeter in the target flow value corresponding period according to determining each target flow value Flow so that the flow value of the last one period reaches the final goal small flow rate values.

Fig. 6 shows the flow chart of a preferred embodiment of the embodiment of the present invention, as shown in fig. 6, the flow is detailed It states as follows:

Step 601 obtains final goal flow value F0

Step 602 judges F0It is less than 3L, if not, be transferred to step 603, if it is being transferred to step 604.

In step, F0Referred to as small flow when less than 3L, otherwise, referred to as big flow.

Step 603, the present flow rate for adjusting flowmeter reach F0, it is transferred to step 612.

Step 604 is determined the flow-rate adjustment of flowmeter to F0Time T.

In this step, rule of thumb it is found that controller adjusts the present flow rate of flowmeter to final goal big flow value Time T1 is generally 300ms, and time T can be determined as to 1.5 times of T1, i.e. T=450ms herein.

The time is divided into 12 equal portions by step 605, using each period as the predetermined time.

Each period can be obtained as 37.5ms by T/12.

Step 606, the regulations speed V for calculating flowmeter.

In this step, V=(A-F0)/12, A is flow fiducial value, can be set as 5L herein.

Step 607, the target flow value M for determining flowmeter in i-th time.

In this step, M=A-V*i, wherein i are i-th of period, and A is flow fiducial value, identical with step 607.

Step 608, the flow for adjusting flowmeter in i-th time.

In this step, the value of i is 0,1,2 ... 12.The flow of flowmeter is adjusted since i=0.

Step 609 judges whether to reach the predetermined time, if not, being transferred to step 608;If so, being transferred to step 610.

Predetermined time in this step is the time 37.5ms that step 605 is calculated.

Step 610 executes i=i+1.

Step 611 judges whether i is more than 12, if so, step 612 is transferred to, if not, being transferred to step 607.

In this step, work as i>When 12, the flow-rate adjustment that 12 periods of step 605 division are completed is indicated.When i≤12 When, indicate that the flow-rate adjustment for not completing 12 periods also, the flow in flowmeter are also not up to final goal flow F0

Step 612 reaches final goal flow F0, complete flow-rate adjustment.

The embodiment of the present invention by reasonable set time T, the division hop count of time T and flow fiducial value A, so as to shorten The present flow rate for adjusting flowmeter reaches final goal flow F0Time.

Fig. 7 shows the schematic diagram of the device provided in an embodiment of the present invention for adjusting anesthesia machine flow meter flow, the dress The method that can be used for executing the adjusting anesthesia machine flow meter flow that foregoing invention embodiment provides is set, as shown in fig. 7, described device It may include:Acquisition module 71, comparison module 72, determining module 73, division module 74 and the first adjustment module 75.Wherein, described Acquisition module 71 is used to obtain the final goal flow value of flowmeter;The comparison module 72 is used for the final goal flow Value is compared with preset flow value;The determining module 73 is used to be less than the preset flow when the final goal flow value When value, determine that the final goal flow value of the flowmeter is final goal small flow rate values, and determination will be in the flowmeter Present flow rate is adjusted to final goal small flow rate values time, the present flow rate adjusting by flowmeter to the small stream of final goal The time of magnitude adjusts relationship proportional to the time of final goal big flow value, the ratio to by the present flow rate in flowmeter Example relationship be:T1=a*T2, wherein T1 is by the time of the present flow rate adjusting of flowmeter to the small flow of final goal, and T2 is The present flow rate of flowmeter is adjusted into the time to final goal big flow, the value of a can be 1.4-1.6;The division mould Block 74 is used to the time being divided into N number of period, and the N is the positive integer more than 1;First adjustment module 75 is used for A target flow value is set in each period respectively, and the flowmeter is adjusted in the target according to each target flow value The flow of flow value corresponding period, so that the flow value of flow value reaches the final mesh at the end of the last one period Mark small flow rate values.

Described device may also include:Second adjustment module 76, second adjustment module 76 are used to work as the comparison module Comparison result be the final goal flow value be greater than or equal to the preset flow value when, determine the final of the flowmeter Target flow value is final goal big flow value, and the present flow rate for adjusting the flowmeter reaches the final goal big flow Value.

In the present embodiment, first adjustment module 75 may include:Acquiring unit 751, determination unit 752 and adjusting unit 753.Wherein, the acquiring unit 751 is for obtaining flow fiducial value;The determination unit 752 is used for according to the final mesh Mark flow value and the flow fiducial value determine the target flow value of each period, wherein the target of the last one period Flow value is equal to the final goal small flow rate values;The adjusting unit 753 is used for according to determining each target flow value tune Throttle flow of the gauge in the target flow value corresponding period, so that described in the flow value arrival of the last one period most Whole target small flow rate values.

The determination unit 752 is particularly used in:

Determine the regulations speed V, V=(the A-B)/N of the flowmeter, wherein A is flow fiducial value, and B is final mesh Mark small flow rate values, and A>B, N are the period number divided;

Determine the target flow value M, the M=A-V*i of each period, wherein i be i-th of period, i 0,1, 2……N。

The device of adjusting anesthesia machine flow meter flow provided in an embodiment of the present invention is for executing arbitrary implementation of the invention The method for the adjusting anesthesia machine flow meter flow that example provides, has corresponding function module, can reach similar to the method Technique effect, details are not described herein again.

Obviously, it will be understood by those skilled in the art that each module of the above invention or each step can be with general Computing device realizes that they can be concentrated on single computing device, or be distributed in net constituted by multiple computing devices On network, optionally, they can be realized with the program code that computer installation can perform, and be deposited so as to be stored in It is performed by computing device in storage device, either they are fabricated to each integrated circuit modules or will be in them Multiple modules or step are fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware With the combination of software.

The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for those skilled in the art For, the present invention can have various modifications and changes.It is all within spirit and principles of the present invention made by any modification, equivalent Replace, improve etc., it should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of method adjusting anesthesia machine flow meter flow, which is characterized in that the method includes:
Obtain the final goal flow value of flowmeter;
The final goal flow value is compared with preset flow value;
When the final goal flow value is less than the preset flow value, determine that the final goal flow value of the flowmeter is Final goal small flow rate values, and determine the time present flow rate in the flowmeter adjusted to final goal small flow rate values;
The time is divided into N number of period, the N is the positive integer more than 1;
A target flow value is set in each period respectively, and the flowmeter is adjusted at this according to each target flow value The flow of target flow value corresponding period so that at the end of the last one period the flow value of flow value reach it is described most Whole target small flow rate values, including:
Obtain flow fiducial value;
The target flow value of each period is determined according to the final goal flow value and the flow fiducial value, wherein most The target flow value of the latter period is equal to the final goal small flow rate values;
Flow of the flowmeter in the target flow value corresponding period is adjusted according to determining each target flow value, so that most The flow value of the latter period reaches the final goal small flow rate values.
2. the method according to claim 1 for adjusting anesthesia machine flow meter flow, which is characterized in that the method is also wrapped It includes:
When the final goal flow value is greater than or equal to the preset flow value, the final goal stream of the flowmeter is determined Magnitude is final goal big flow value, and the present flow rate for adjusting the flowmeter reaches the final goal big flow value.
3. the method according to claim 1 for adjusting anesthesia machine flow meter flow, which is characterized in that according to the final mesh Mark flow value and the flow fiducial value determine the target flow value of each period, specifically include:
Determine the regulations speed V, V=(the A-B)/N of the flowmeter, wherein A is flow fiducial value, and B is that final goal is small Flow value, and A>B, N are the period number divided;
Determine the target flow value M, the M=A-V*i of each period, wherein i is i-th of period, i 0,1,2 ... N。
4. the method according to claim 2 for adjusting anesthesia machine flow meter flow, which is characterized in that determine the flow Present flow rate in meter adjusts the time to final goal small flow rate values, specifically includes:According to it is preset will be in flowmeter Present flow rate adjust to final goal small flow rate values time and by flowmeter present flow rate adjust it is big to final goal Proportionate relationship between the time of flow value, which determines, adjusts the present flow rate in the flowmeter to final goal small flow rate values Time.
5. the method according to claim 4 for adjusting anesthesia machine flow meter flow, which is characterized in that the proportionate relationship For:T1=a*T2, wherein T1 is by the time of the present flow rate adjusting of flowmeter to the small flow of final goal, and T2 is by flow The present flow rate of meter adjusts the time to final goal big flow, and the value of a is 1.4-1.6.
6. a kind of device adjusting anesthesia machine flow meter flow, which is characterized in that described device includes:
Acquisition module, the final goal flow value for obtaining flowmeter;
Comparison module, for the final goal flow value to be compared with preset flow value;
Determining module, for when the final goal flow value is less than the preset flow value, determining the flowmeter most Whole target flow value is final goal small flow rate values, and is determined the present flow rate adjusting in the flowmeter is small to final goal The flow value time;
Division module, for the time to be divided into N number of period, the N is the positive integer more than 1;
First adjustment module, for setting a target flow value in each period respectively, and according to each target flow value Flow of the flowmeter in the target flow value corresponding period is adjusted, so that flow value at the end of the last one period Flow value reach the final goal small flow rate values, including:
Acquiring unit, for obtaining flow fiducial value;
Determination unit, the target stream for determining each period according to the final goal flow value and the flow fiducial value Magnitude, wherein the target flow value of the last one period is equal to the final goal small flow rate values;
Unit is adjusted, for adjusting flowmeter in the target flow value corresponding period according to determining each target flow value Flow so that the flow value of the last one period reaches the final goal small flow rate values.
7. the device according to claim 6 for adjusting anesthesia machine flow meter flow, which is characterized in that described device is also wrapped It includes:
Second adjustment module is greater than or equal to institute for the comparison result when the comparison module for the final goal flow value When stating preset flow value, determines that the final goal flow value of the flowmeter is final goal big flow value, adjust the flow The present flow rate of meter reaches the final goal big flow value.
8. the device according to claim 6 for adjusting anesthesia machine flow meter flow, which is characterized in that the determination unit, It is specifically used for:
Determine the regulations speed V, V=(the A-B)/N of the flowmeter, wherein A is flow fiducial value, and B is that final goal is small Flow value, and A>B, N are the period number divided;
Determine the target flow value M, the M=A-V*i of each period, wherein i is i-th of period, i 0,1,2 ... N。
CN201410389818.7A 2014-08-08 2014-08-08 A kind of method and device adjusting anesthesia machine flow meter flow CN105334875B (en)

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CN103285483B (en) * 2013-06-05 2015-07-22 深圳市瑞沃德生命科技有限公司 Precise propelling type electronic anesthesia machine

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