CN102028997A - Mode switching method for anaesthesia machine or breathing machine - Google Patents

Mode switching method for anaesthesia machine or breathing machine Download PDF

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Publication number
CN102028997A
CN102028997A CN2009102356382A CN200910235638A CN102028997A CN 102028997 A CN102028997 A CN 102028997A CN 2009102356382 A CN2009102356382 A CN 2009102356382A CN 200910235638 A CN200910235638 A CN 200910235638A CN 102028997 A CN102028997 A CN 102028997A
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fre
pattern
excursion
inspiratory
insp
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CN102028997B (en
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丛玉孟
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Beijing Aeonmed Co Ltd
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Beijing Aeonmed Co Ltd
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Abstract

The invention provides a mode switching method for an anaesthesia machine or a breathing machine, which comprises the following steps of: acquiring an initial value of a parameter of a second mode after mode switching according to a parameter of a first mode, wherein the inspiratory expiratory ratio of the second mode is calculated according to the frequency and inspiratory time of the first mode, and the tidal volume, frequency, breath-holding time and end-expiratory pressure of the second mode are the same as corresponding parameter values of the first mode; judging whether the initial value meets a first judgment condition according to the first judgment condition; and if the initial value does not meet a first judgment condition, adjusting the breath-holding time, the inspiratory expiratory ratio and the frequency of the second mode to make the tidal volume of the second mode equal to that of the first mode.

Description

The mode switching method that is used for anesthetic machine or respirator
Technical field
The present invention relates to medical field, in particular to a kind of mode switching method that is used for anesthetic machine or respirator.
Background technology
Anesthetic machine and respirator have become conventional armarium, in the general first aid and intensive care unit(ICU) that are applied to each clinical department.Anesthetic machine or respirator generally have several breathing patterns, and the doctor can carry out the switching of breathing pattern with different situations according to different patients.
In the prior art, when from SIMV (Synchronised Intermittent MandatoryVentilation, intermittent mandatory ventilation synchronously) pattern switches to IPPV (IntermittentPositive Pressure Ventilation, intermittent positive pressure ventilation) during pattern, adopts the patient parameter setting of acquiescence.
The inventor finds mode switching method of the prior art, and the inconsistent meeting of the parameter setting of different mode changes inspiratory/expiratory and frequency, and then can cause tidal volume to change, thereby patient's treatment is caused certain risk.
Summary of the invention
The present invention aims to provide a kind of mode switching method that is used for anesthetic machine or respirator, can solve mode switching method of the prior art, the inconsistent meeting of the parameter setting of different mode changes inspiratory/expiratory and frequency, and then can cause tidal volume to change, thereby patient's treatment is caused the problem of certain risk.
In an embodiment of the present invention, provide a kind of mode switching method that is used for anesthetic machine or respirator, may further comprise the steps:
The initial value of the parameter of second pattern after switching according to the parameter acquisition mode of first pattern, wherein, the inspiratory/expiratory of second pattern calculates acquisition according to the frequency and the inspiratory duration of first pattern, and it is identical with first pattern relevant parameters value that the tidal volume of second pattern, frequency, breath holding time and end-tidal are pressed;
Adopt first criterion that initial value is judged, judge whether initial value satisfies first criterion;
If initial value does not satisfy first criterion, breath holding time, inspiratory/expiratory and the frequency of second pattern are regulated, so that the tidal volume of second pattern keeps equating with the tidal volume of first pattern.
In the above-described embodiments, switch in the process of second pattern in first pattern, judge by the initial value after adopting first criterion to conversion, judge whether initial value satisfies first criterion, if initial value does not satisfy first criterion, breath holding time to second pattern, the mode that inspiratory/expiratory and frequency are regulated, make the tidal volume of second pattern keep equating with the tidal volume of first pattern, thereby realized being provided with under the inconsistent situation in the parameter of different mode, tidal volume can remain unchanged, overcome mode switching method of the prior art, the inconsistent meeting of the parameter setting of different mode changes inspiratory/expiratory and frequency, and then can cause tidal volume to change, thereby patient's treatment is caused the problem of certain risk.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the mode switching method flow chart that is used for anesthetic machine or respirator according to an embodiment of the invention;
Fig. 2 shows the mode switching method flow chart that is used for anesthetic machine or respirator according to a preferred embodiment of the present invention.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the mode switching method flow chart that is used for anesthetic machine or respirator according to an embodiment of the invention, may further comprise the steps:
S102, the initial value of the parameter of second pattern after switching according to the parameter acquisition mode of first pattern, wherein, the inspiratory/expiratory of second pattern calculates acquisition according to the frequency and the inspiratory duration of first pattern, and it is identical with first pattern relevant parameters value that the tidal volume of second pattern, frequency, breath holding time and end-tidal are pressed;
S104 adopts first criterion that initial value is judged, judges whether initial value satisfies first criterion;
S106 if initial value does not satisfy first criterion, regulates breath holding time, inspiratory/expiratory and the frequency of second pattern, so that the tidal volume of second pattern keeps equating with the tidal volume of first pattern.
In the present embodiment, switch in the process of second pattern in first pattern, judge by the initial value after adopting first criterion to conversion, judge whether initial value satisfies first criterion, if initial value does not satisfy first criterion, breath holding time to second pattern, the mode that inspiratory/expiratory and frequency are regulated, make the tidal volume of second pattern keep equating with the tidal volume of first pattern, thereby realized being provided with under the inconsistent situation in the parameter of different mode, tidal volume can remain unchanged, overcome mode switching method of the prior art, the inconsistent meeting of the parameter setting of different mode changes inspiratory/expiratory and frequency, and then can cause tidal volume to change, thereby patient's treatment is caused the problem of certain risk.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, first criterion specifically comprises: F min ≤ 60 * V t 60 Fre * I I + E * ( 1 - T p ) ≤ F max ; 60 Fre * I I + E * ( 1 - T p ) ≥ T min insp ; 60 Fre * E I + E ≥ T min exp ; Wherein, T Min ExpExpression expiratory duration minima, T Min InspExpression inspiratory duration minima, T pThe expression breath holding time, F MinThe expression minimum flow velocity, F MaxThe expression Peak Flow Rate, V tThe expression tidal volume, The expression inspiratory/expiratory, Fre represents frequency.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the breath holding time of second pattern, inspiratory/expiratory and frequency are regulated specifically and are comprised: if initial value satisfies first criterion, implement of the switching of first pattern to second pattern, if initial value does not satisfy first criterion, regulate the breath holding time of second pattern, obtain first numerical value of second pattern after the adjusting; Adopt first criterion to judge to first numerical value, judge whether first numerical value satisfies first Rule of judgment; If first numerical value satisfies first criterion, implement of the switching of first pattern to second pattern, if first numerical value does not satisfy first criterion, regulate the inspiratory/expiratory of second pattern, obtain the second value of second pattern after the adjusting; Adopt first criterion to judge to second value, judge whether second value satisfies first Rule of judgment; If second value satisfies first criterion, implement of the switching of first pattern to second pattern, if second value does not satisfy first criterion, regulate the frequency of second pattern, obtain the third value of second pattern after the adjusting.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the breath holding time of regulating second pattern specifically comprises: when T min insp * F max 60 ≤ V t The time, according to V t * Fre F max ≤ I I + E * ( 1 - T p ) ≤ V t * Fre F min Calculate the excursion of breath holding time; In excursion, breath holding time is regulated.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the breath holding time of regulating second pattern specifically comprises: when T min insp * F min 60 ≤ V t ≤ T min insp * F max 60 The time, according to T min insp * Fre 60 ≤ I I + E * ( 1 - T p ) ≤ V t * Fre F min Calculate the excursion of breath holding time; In excursion, breath holding time is regulated.
The method of excursion of calculating the breath holding time of second pattern is according to the constant demand of tidal volume, obtains from the first condition conversion, and inequality relevant with breath holding time in first condition is F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max With 60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp , Obtain through conversion V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With T min insp * Fre 60 &le; I I + E * ( 1 - T p ) . According to the constant demand of tidal volume, draw the method for the excursion of calculating breath holding time.And, when V t < T min insp * F min 60 The time, inequality does not have to be separated.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the inspiratory/expiratory of regulating second pattern specifically comprises: when T min insp * F max 60 &le; V t The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T P ) * ( 1 - T min exp * Fre 60 ) , Calculate the excursion of inspiratory/expiratory; When T min insp * F min 60 &le; V t &le; T min insp * F max 60 The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of inspiratory/expiratory; In excursion, inspiratory/expiratory is regulated.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the method for calculating the inspiratory/expiratory excursion specifically comprises: when V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of inspiratory/expiratory; When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of inspiratory/expiratory; When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of inspiratory/expiratory; When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of inspiratory/expiratory.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the frequency of regulating second pattern specifically comprises: when T min insp * F max 60 &le; V t The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , The excursion of calculated rate; When T min insp * F min 60 &le; V t &le; T min insp * F max 60 The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The excursion of calculated rate; In excursion, frequency is regulated.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the method for the excursion of calculated rate specifically comprises: when V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to I I + E * ( 1 - T p ) * F min V t &le; Fre &le; I I + E * ( 1 - T p ) * F max V t The excursion of calculated rate; When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to ( 1 - I I + E ) * 60 T min exp &le; Fre &le; I I + E * ( 1 - T p ) * F max V t Calculate the excursion of frequency spectrum; When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to I I + E * ( 1 - T p ) * F min V t &le; Fre &le; I I + E * ( 1 - T p ) * 60 T min insp The excursion of calculated rate; When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to ( 1 - I I + E ) * 60 T min exp &le; Fre &le; I I + E * ( 1 - T p ) * 60 T min insp The excursion of calculated rate.
Preferably, at the above-mentioned mode switching method that is used for anesthetic machine or respirator, the breath holding time of second pattern, inspiratory/expiratory and frequency are regulated also and are comprised: adopt first criterion to judge to third value, judge whether third value satisfies first Rule of judgment; If third value satisfies first criterion, implement of the switching of first pattern to second pattern, if third value does not satisfy first criterion, withdraw from all adjustings.
Fig. 2 shows the mode switching method flow chart that is used for anesthetic machine or respirator according to a preferred embodiment of the present invention, specifically comprises:
S201, when switching to the IPPV pattern by the SIMV pattern, the IE of IPPV (inspiratory/expiratory) is calculated by frequency and the inspiratory duration of SIMV, and meets the absolute value nearby principle; The tidal volume of IPPV, frequency, breath holding time, PEEP (end expiratory positive pressure) inherits the parameter of SIMV;
S202 judges whether initial parameter satisfies F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max , 60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp With 60 Fre * E I + E &GreaterEqual; T min exp , If satisfy, do not need parameter is regulated, switching is finished, and switches to the IPPV pattern; If do not satisfy, go to step S203;
S203 regulates breath holding time T p
S204 judges whether each parameter value behind the adjusting breath holding time satisfies F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max , 60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp With 60 Fre * E I + E &GreaterEqual; T min exp , If satisfy, switching is finished, and switches to the IPPV pattern; If do not satisfy, go to step S205;
S205 regulates inspiratory/expiratory;
S206 judges whether each parameter value behind the adjusting inspiratory/expiratory satisfies F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max , 60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp With 60 Fre * E I + E &GreaterEqual; T min exp , If satisfy, switching is finished, and switches to the IPPV pattern; If do not satisfy, go to step S207;
S207, regulating frequency;
S208 judges whether each parameter value after the regulating frequency satisfies F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max , 60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp With 60 Fre * E I + E &GreaterEqual; T min exp , If satisfy, switching is finished, and switches to the IPPV pattern; If do not satisfy, go to step S209;
S209, handoff error withdraws from all adjustings.
The software implementation framework is as follows according to an embodiment of the invention:
if((FreLim<=IppvIeTpLimMax)&&(FreLim>=IppvIeTpLimMin))
{
param_result=JudgeMaxMin(IppvIeTpLimMax,FreLim,1,ippv_pa
ra_tmp.Tp,TP_MAX_PARA,TP_MIN_PARA);
if(param_result==FAIL)
{
IeLim=(27440-5*ippv_para_tmp.Freq)*(100-ippv_para_tmp.Tp);
if(IppvIeTpLimMax>=IeLim)
{
param_result=JudgeMaxMin(IeLim,FreLim,2,ippv_para_tmp.IE,
IE_N_MAX,IE_N_MIN);
if(param_result==FAIL)
{
Sta=1;
param_result=JudgeMaxMin(IeLim,FreLim,3,ippv_para_tmp.Freq,
FREQ_IPPV_AND_PCV_MAX,FREQ_IPPV_AND_PCV_MIN);
JudgeError();
}
}
else?if(IppvIeTpLimMax<IeLim)
{
param_result=JudgeMaxMin(IppvIeTpLimMax,FreLim,2,ippv_para_t
mp.IE,IE_N_MAX,IE_N_MIN);
if(param_result==FAIL)
{
Sta=2;
param_result=JudgeMaxMin(IppvIeTpLimMax,FreLim,3,ippv_pa
ra_tmp.Freq,FREQ_IPPV_AND_PCV_MAX,FREQ_IPPV_AND_PC
V_MIN);
JudgeError();
}
}
else?if(IeLim<IppvIeTpLimMin)
{
param_result=ERROR;
}
}
}
else?if(FreLim<IppvIeTpLimMin)
{
param_result=JudgeMaxMin(IppvIeTpLimMax,
IppvIeTpLimMin,1,ippv_para_tmp.Tp,TP_MAX_PARA,
TP_MIN_PARA);
if(param_result==FAIL)
{
IeLim=(27440-5*ippv_para_tmp.Freq)*(100-
ippv_para_tmp.Tp);//
if(IppvIeTpLimMax>=IeLim)
{
param_result=JudgeMaxMin(IeLim,
IppvIeTpLimMin,2,ippv_para_tmp.IE,IE_N_MAX,IE_N_MIN);
if(param_result==FAIL)
{
Sta=3;
param_result=JudgeMaxMin(IeLim,IppvIeTpLimMin,3,ippv_para
_tmp.Freq,FREQ_IPPV_AND_PCV_MAX,FREQ_IPPV_AND_PCV_
MIN);
JudgeError();
}
}
else?if(IppvIeTpLimMax<IeLim)
{
param_result=JudgeMaxMin(IppvIeTpLimMax,IppvIeTpLimMin,
2,ippv_para_tmp.IE,IE_N_MAX,IE_N_MIN);
if(param_result==FAIL)
{
Sta=4;
param_result=JudgeMaxMin(IppvIeTpLimMax,IppvIeTpLimMin,
3,ippv_para_tmp.Freq,FREQ_IPPV_AND_PCV_MAX,
FREQ_IPPV_AND_PCV_MIN);
JudgeError();
}
}
else?if(IeLim<IppvIeTpLimMin)
{
param_result=ERROR;
}
}
}
In the present embodiment, by adopting each initial parameter value when switching to the IPPV pattern to carry out judgment mode, if initial value does not satisfy first criterion, breath holding time to second pattern, inspiratory/expiratory and frequency are regulated, make the tidal volume of second pattern keep equating with the tidal volume of first pattern, thereby realized being provided with under the inconsistent situation in the parameter of different mode, tidal volume can remain unchanged, overcome mode switching method of the prior art, the inconsistent meeting of the parameter setting of different mode changes inspiratory/expiratory and frequency, and then can cause tidal volume to change, thereby patient's treatment is caused the problem of certain risk.According to the optimal parameter of the limit value of tidal volume search breath holding time, inspiratory/expiratory and frequency, make the variation minimum of tidal volume between two kinds of patterns, be suitable for patient's breathing management, improve the safety in utilization of anesthetic machine or respirator; Be convenient to operation of medical workers.Heighten operating efficiency, reduce complexity.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the one accountant, perhaps be distributed on the network that a plurality of accountant forms, alternatively, they can be realized with the executable program code of accountant, carry out by accountant thereby they can be stored in the storage device, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a mode switching method that is used for anesthetic machine or respirator is characterized in that, may further comprise the steps:
The initial value of the parameter of second pattern after switching according to the parameter acquisition mode of first pattern, wherein, the inspiratory/expiratory of described second pattern calculates acquisition according to the frequency and the inspiratory duration of described first pattern, and it is identical with described first pattern relevant parameters value that the tidal volume of described second pattern, frequency, breath holding time and end-tidal are pressed;
Adopt first criterion that described initial value is judged, judge whether described initial value satisfies first criterion;
If described initial value does not satisfy described first criterion, breath holding time, inspiratory/expiratory and the frequency of described second pattern are regulated, so that the tidal volume of second pattern keeps equating with the tidal volume of first pattern.
2. the mode switching method that is used for anesthetic machine or respirator according to claim 1 is characterized in that, described first criterion specifically comprises:
F min &le; 60 * V t 60 Fre * I I + E * ( 1 - T p ) &le; F max ;
60 Fre * I I + E * ( 1 - T p ) &GreaterEqual; T min insp ;
60 Fre * E I + E &GreaterEqual; T min exp ;
Wherein, T Min ExpExpression expiratory duration minima, T Min InspExpression inspiratory duration minima, T pThe expression breath holding time, F MinThe expression minimum flow velocity, F MaxThe expression Peak Flow Rate, V tThe expression tidal volume, The expression inspiratory/expiratory, Fre represents frequency.
3. the mode switching method that is used for anesthetic machine or respirator according to claim 1 is characterized in that, the breath holding time of described second pattern, inspiratory/expiratory and frequency are regulated specifically and comprised:
If described initial value satisfies described first criterion, implement of the switching of first pattern to second pattern, if described initial value does not satisfy first criterion, regulate the breath holding time of described second pattern, obtain first numerical value of described second pattern after the adjusting;
Adopt described first criterion to judge to described first numerical value, judge whether described first numerical value satisfies first Rule of judgment;
If described first numerical value satisfies described first criterion, implement of the switching of first pattern to second pattern, if described first numerical value does not satisfy first criterion, regulate the inspiratory/expiratory of described second pattern, obtain the second value of described second pattern after the adjusting;
Adopt described first criterion to judge to described second value, judge whether described second value satisfies described first Rule of judgment;
If described second value satisfies described first criterion, implement of the switching of first pattern to second pattern, if described second value does not satisfy first criterion, regulate the frequency of described second pattern, obtain the third value of described second pattern after the adjusting.
4. the mode switching method that is used for anesthetic machine or respirator according to claim 3 is characterized in that, the breath holding time of regulating described second pattern specifically comprises:
When T min insp * F max 60 &le; V t The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of described breath holding time;
In described excursion, described breath holding time is regulated.
5. the mode switching method that is used for anesthetic machine or respirator according to claim 3 is characterized in that, the breath holding time of regulating described second pattern specifically comprises:
When T min insp * F min 60 &le; V t &le; T min insp * F max 60 The time, according to
T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of described breath holding time;
In described excursion, described breath holding time is regulated.
6. the mode switching method that is used for anesthetic machine or respirator according to claim 3 is characterized in that, the inspiratory/expiratory of regulating described second pattern specifically comprises:
When T min insp * F max 60 &le; V t The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , Calculate the excursion of described inspiratory/expiratory;
When T min insp * F min 60 &le; V t &le; T min insp * F max 60 The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of described inspiratory/expiratory;
In described excursion, described inspiratory/expiratory is regulated.
7. the mode switching method that is used for anesthetic machine or respirator according to claim 6 is characterized in that, the method for calculating described inspiratory/expiratory excursion specifically comprises:
When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of described inspiratory/expiratory;
When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of described inspiratory/expiratory;
When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min Calculate the excursion of described inspiratory/expiratory;
When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of described inspiratory/expiratory.
8. the mode switching method that is used for anesthetic machine or respirator according to claim 3 is characterized in that, the frequency of regulating described second pattern specifically comprises:
When T min insp * F max 60 &le; V t The time, according to V t * Fre F max &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , Calculate the excursion of described frequency;
When T min insp * F min 60 &le; V t &le; T min insp * F max 60 The time, according to T min insp * Fre 60 &le; I I + E * ( 1 - T p ) &le; V t * Fre F min With I I + E * ( 1 - T p ) &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) Calculate the excursion of described frequency;
In described excursion, described frequency is regulated.
9. the mode switching method that is used for anesthetic machine or respirator according to claim 8 is characterized in that, the method for calculating the excursion of described frequency specifically comprises:
When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to I I + E * ( 1 - T p ) * F min V t &le; Fre &le; I I + E * ( 1 - T p ) * F max V t Calculate the excursion of described frequency;
When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to ( 1 - I I + E ) * 60 T min exp &le; Fre &le; I I + E * ( 1 - T p ) * F max V t Calculate the excursion of described frequency spectrum;
When V t * Fre F min &le; ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) The time, according to I I + E * ( 1 - T p ) * F min V t &le; Fre &le; I I + E * ( 1 - T p ) * 60 T min insp Calculate the excursion of described frequency;
When V t * Fre F min > ( 1 - T p ) * ( 1 - T min exp * Fre 60 ) , According to ( 1 - I I + E ) * 60 T min exp &le; Fre &le; I I + E * ( 1 - T p ) * 60 T min insp Calculate the excursion of described frequency.
10. the mode switching method that is used for anesthetic machine or respirator according to claim 3 is characterized in that, the breath holding time of described second pattern, inspiratory/expiratory and frequency are regulated also and comprised:
Adopt first criterion to judge to third value, judge whether described third value satisfies described first Rule of judgment;
If described third value satisfies described first criterion, implement of the switching of first pattern to second pattern, if described third value does not satisfy first criterion, withdraw from all adjustings.
CN200910235638.2A 2009-09-30 2009-09-30 Mode switching method for anaesthesia machine or breathing machine Expired - Fee Related CN102028997B (en)

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CN103608063A (en) * 2011-06-06 2014-02-26 皇家飞利浦有限公司 Configuration of respiratory therapy modes
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