CN103860164A - Electrocardio driving lead automatic switching method and device - Google Patents
Electrocardio driving lead automatic switching method and device Download PDFInfo
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- CN103860164A CN103860164A CN201410068530.XA CN201410068530A CN103860164A CN 103860164 A CN103860164 A CN 103860164A CN 201410068530 A CN201410068530 A CN 201410068530A CN 103860164 A CN103860164 A CN 103860164A
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Abstract
The invention relates to the field of medical electrocardio signal guarding, in particular to an electrocardio driving lead automatic switching method and an electrocardio driving lead automatic switching device. The driving lead automatic switching technology is used for avoiding the problem that an electrocardio signal can not be measured due to abnormal connecting conditions that a driving lead wire drops or is not connected well and the like. A user can continue to measure the electrocardio signal without manually reconnecting the driving lead wire or changing the driving lead wire. The electrocardio driving lead automatic switching device is time-saving, convenient and better in user experience.
Description
Technical field
the present invention relates to medical electrocardiosignal monitoring field, relate in particular to a kind of electrocardio and drive the method and apparatus that leads and automatically switch.
Background technology
electrocardio (being called for short ECG) signal is heart electrically reflection of activity within a period of time, gathers by skin electrode, and then skin electrode is connected with cardiac diagnosis lead-line again, and electrocardiosignal is transferred in electrocardio measuring circuit.Skin electrode is generally placed on each position such as extremity and chest.
in cardiac monitoring, mainly use 3 lead, 5 lead, the 12 three kinds of patterns of leading.Wherein, 3 lead pattern using right arm (RA), left arm (LA), three limb lead lines of left lower limb (LL), can show I, II, ⅢSan road waveform.Owing to leading under pattern 3, only there are three conducting wires, and electrocardiosignal is differential signal, per pass waveform is all to be led as calculating by two different conducting wires, the 3rd is led and gets as driving, therefore 3 lead under pattern, three road waveforms can not show simultaneously, can only show wherein one waveform at every turn.The 5 pattern using right arms (RA) that lead, left arm (LA), left lower limb (LL), right lower limb (RL), five conducting wires of chest lead (V), can show I, II, III, avR, avL, avF, V seven road waveforms, seven road waveforms can show simultaneously.The 12 pattern using right arms (RA) that lead, left arm (LA), left lower limb (LL), right lower limb (RL), ten conducting wires of chest lead (V1 ~ V6), can show I, II, III, avR, avL, avF, V1, V2, V3, V4, V5, V6Shi bis-road waveforms, Shi Er road waveform can show simultaneously.
in general, electrocardio measuring circuit all can be eliminated by actuation techniques the common mode interference signal of human body, thereby improves electrocardiosignal quality.Actuation techniques is mainly to take out the common-mode voltage of human body by limb lead, then common-mode voltage feeds back on certain leads after the processing such as anti-phase amplification again, this leads to be called to drive and leads, this driving is led and is not participated in electrocardiosignal and calculate, and arrives with this effect of eliminating the common mode interference signal that exists of human body.3 lead under pattern, and while showing I waveform, left lower limb (LL) leads for driving, and while showing II waveform, left arm (LA) leads for driving, and while showing III waveform, right arm (RA) leads for driving.5 lead and 12 lead under pattern, and driving leads uses maximum to be right lower limb (RL), to lead for driving but also can select other to lead.
in use, due to patient's the situation such as movement or other collisions or conducting wire damage, can cause conducting wire to come off or loose contact, non-driving is led when coming off or damaging, the electrocardiosignal relevant to this conducting wire can not be measured, but still can measure with the incoherent electrocardiosignal of this conducting wire, in the time showing multiple tracks waveform, not affect use; Come off or when loose contact and drive to lead, may cause electrocardiosignal to detect or electrocardiosignal second-rate, prior art, can judge leads comes off, by whether receiving corresponding bioelectrical signals, if no, or signal is undesired is judged as lead (comprise drive lead) and comes off.But, leading and come off or only carry out corresponding warning when loose contact when driving, user must reconnect or change and drive conducting wire could continue use, and more time-consuming like this, it is also not too convenient to use, and has reduced measurement efficiency.
Summary of the invention
the object of the invention is for problem described above, provide a kind of electrocardio to drive the method and apparatus that leads and automatically switch.
for solving above technical problem, technical scheme provided by the invention is:
electrocardio drives a device that leads and automatically switch, and comprises
the mode decision module of leading, for judging current cardiac diagnosis lead mode of operation;
lead and connect abnormal judge module, be connected with the described mode decision module of leading, for be judged as 12 lead or 5 lead that driving under pattern leads and whether connect abnormal, or 3 lead under pattern arbitrary lead whether connect abnormal;
lead signals quality judge module, is connected abnormal judge module with described leading and is connected, and for other signal qualitys that lead except described driving is led are judged, and selects the best passage that leads of signal quality;
the driving handover module that leads, is connected with described lead signals quality judge module, is switched to the best passage that leads of described signal quality carries out ECG signal sampling for driving is led.
further, also comprise,
pre-set module, be connected abnormal judge module and be connected with leading with the described mode decision module of leading, for setting in advance that cardiac diagnosis lead pattern and 12 is led or 5 leading or 3 drivings of leading under pattern are led.
further, also comprise,
prompting alarm module, is connected abnormal judge module with described leading and is connected, if lead and connect extremely for judgement, and alarm output.
a kind of electrocardio provided by the invention drives the method for leading and automatically switching, and comprises the steps:
step 1, judge current cardiac diagnosis lead mode of operation;
step 2, as being judged as 12 pattern or 5 patterns of leading of leading, continue judge to drive to lead under this pattern whether connect extremely; Connect extremely if judgement drives to lead, enter step 3;
step 3, to leading under pattern in 12 patterns or 5 of leading, other signal qualitys that lead except described driving is led judge, and select the best passage that leads of signal quality;
step 4, driving is led and is switched to the best passage that leads of described signal quality and carries out ECG signal sampling.
further, after described step 1, also comprise,
step 11, as be judged as 3 lead pattern continue to judge under this pattern arbitrary lead whether connect abnormal;
if leading, step 12 judgement connects extremely, alarm output.
further, in described step 11, if judgement judges that the connection of leading is not abnormal, enter step 14:
keep the 3 constant ECG signal samplings that carry out of pattern that lead, repeated execution of steps 11 in scheduled duration.
further, also comprise in described step 14, each is led and connects the detection of signal quality, and select the best passage that leads of signal quality, driving is led and is switched to the best passage that leads of described signal quality and carries out the step of ECG signal sampling.
further, in described step 2, not do not connect extremely as judgement drives to lead, keep 12 mode of operations or 5 of leading to lead that mode of operation is constant carries out ECG signal sampling, and in scheduled duration repeated execution of steps 2.
further, in described step 2, connect extremely as judgement drives to lead, carry out alarm output.
further, after described step 4, also comprise that continuing to return step 2 in scheduled duration detects described 12 the lead drivings of mode of operation of mode of operation or 5 of leading and lead whether connect abnormal step.
the present invention proposes a kind of electrocardio and drive the automatic switching method that leads, lead or 12 lead under mode of operation 5, lead and come off or when loose contact when driving, can automatically driving be led switches to other and connects good conducting wire, continues electrocardiosignal to measure.Owing to leading under pattern and only having three conducting wires (RA, LA, LL) 3, electrocardiosignal is differential signal, so wherein two are led as calculating, the 3rd is led as driving, arbitrary is led and comes off or loose contact all can not be carried out the measurement of electrocardiosignal, therefore 3 lead under pattern, arbitrary lead come off or loose contact all cannot switch other conducting wires for drive lead, only carry out corresponding warning.
this scheme drives owing to having used the automatic switchover technology that leads, avoid driving and led because occur coming off or loose contact etc. connects abnormal conditions, and the electrocardio causing cannot be measured problem, user is not only saved time but also convenient in use, without manually reconnecting or change driving conducting wire, just can continue electrocardiosignal to measure, user experiences better.
Accompanying drawing explanation
for ease of explanation, the present invention is described in detail by following preferred embodiment and accompanying drawing.
fig. 1 is that a kind of electrocardio of the present invention drives an embodiment method flow diagram that leads and automatically switch;
fig. 2 is that a kind of electrocardio of the present invention drives another embodiment method flow diagram that leads and automatically switch;
fig. 3 is that a kind of electrocardio of the present invention drives an example structure block diagram that leads and automatically switch;
fig. 4 is that a kind of electrocardio of the present invention drives another example structure block diagram that leads and automatically switch.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of electrocardio of the present invention drives an embodiment method flow diagram that leads and automatically switch, and refers to Fig. 1:
101, judge current cardiac diagnosis lead mode of operation;
medical menitoring system start, and trigger the mode such as configuration information or conducting wire number of connection according to default relevant information or user, the mode of operation of judging the monitoring of current cardiac diagnosis lead, the pattern of generally leading comprises: 12 pattern, 5 pattern and 3 patterns of leading of leading of leading;
102,, as being judged as 12 pattern or 5 patterns of leading of leading, continue judge to drive to lead under this pattern whether connect extremely;
12 driving that pattern or 5 leads under pattern (the driving the most standing right lower limbs (RL) that are set to that lead that lead that lead that judgement pre-sets, but also can select other to lead leads for driving), whether receive corresponding bioelectrical signals, if no, or signal undesired be judged as that driving leads and connect abnormal.
if driving to lead, judgement do not connect extremely, keep 12 mode of operation or the 5 constant ECG signal samplings that carry out of mode of operation that lead that lead, and continue cycle detection 12 the lead driving of mode of operation of mode of operation or 5 of leading and lead and whether connect extremely, in scheduled duration, repeat 102 steps;
connect extremely if judgement drives to lead, enter step 103.
can also be preferably included in this step and judge that 12 patterns or 5 of leading lead after pattern, carry out real-time each and lead and connect the detection of signal quality.And after judgement drives the connection of leading abnormal, carry out alarm output.
103, to leading under pattern in 12 patterns or 5 of leading, other lead signals quality except described driving is led judge, and select the best passage that leads of signal quality;
first judge in 12 patterns or 5 of leading and lead under pattern to lead whether connect extremely (whether to receive corresponding bioelectrical signals except other when front wheel driving is led, if do not had, or undesired being judged as of signal led connection extremely), if connected extremely,, alarm output, comprise demonstration, printing, storage and labelling etc.If do not come off, judge the quality of its lead signals, generally speaking, determination methods is a lot, such as: the signal quality connecting that leads detects and can detect by alternating voltage or unidirectional current platen press, be circuit input AC or d. c. voltage signal, due at conducting wire and human body exposure level when different, therefore, the impedance that conducting wire contacts with human body is different, thereby cause this interchange or the DC voltage amplitude that detect different, and then the quality of connection that respectively leads of reflection, in the time magnitude of voltage high pressure being detected or lower than certain, threshold value be set, illustrate that this loose contact signal quality that leads is low etc.The quality of connection that leads detects also and can detect by interchange or DC current method, be circuit input AC or DC current signal, this current signal is converted to interchange again or d. c. voltage signal detects, because the impedance that conducting wire contacts with human body is different, thereby cause the interchange or the DC voltage amplitude that detect different, and then the quality of connection that respectively leads of reflection, in the time magnitude of voltage high pressure being detected or lower than certain, threshold value is set, illustrate that this loose contact signal quality that leads is low etc.
by relatively, can select the best passage that leads of signal quality that meets preset value area requirement most.
104, driving is led and be switched to the best passage that leads of described signal quality and carry out ECG signal sampling.
in general, 12 the lead drivings that pre-set under pattern of pattern or 5 of leading are led and automatically changed by software transfer, be switched to the lead passage corresponding with high signal quality by the cooperation of hardware circuit and receive the signal of telecommunication, as optimal way further, after described step 104, also comprise, continue to return in scheduled duration step 102 detect described 12 lead mode of operation or 5 lead the driving of mode of operation lead whether connect abnormal;
A kind of electrocardio of the present invention drives another embodiment method flow diagram that leads and automatically switch, and refers to Fig. 2:
201, judge current cardiac diagnosis lead mode of operation;
medical menitoring system start, and trigger the mode such as configuration information or conducting wire number of connection according to default relevant information or user, the mode of operation of judging the monitoring of current cardiac diagnosis lead, the pattern of generally leading comprises: 12 pattern, 5 pattern and 3 patterns of leading of leading of leading;
202, as be judged as 3 lead pattern continue to judge under this pattern arbitrary lead whether connect abnormal;
if judge that arbitrary lead do not connect extremely, keep the 3 constant ECG signal samplings that carry out of mode of operation that lead, continue scheduled duration internal recycle and detected for 3 leading of mode of operation of leading and whether connect extremely, repeat 202 steps; Can also preferably include, step 204, each be led and connects the detection of signal quality, and select the best passage that leads of signal quality, driving is led and is switched to the best passage that leads of described signal quality and carries out the step of ECG signal sampling; Can guarantee that like this three quality of leading the electrocardiosignal that gathers under pattern are guaranteed and optimize.
connect extremely if judgement is led, enter step 203.
owing to leading under pattern and only having three conducting wires (RA, LA, LL) 3, electrocardiosignal is differential signal, so wherein two are led as calculating, the 3rd is led as driving, and the arbitrary connection of leading all can not be carried out the measurement of electrocardiosignal extremely, therefore 3 lead under pattern, if arbitrary is led and connects other patterns that extremely all cannot be switched to, the connection abnormal alarm that only leads, leads if all that it is normal all to connect, continue cycle detection respectively lead connect whether normal.
if leading, 203 judgements connect extremely, alarm output.
also preferably include in described step 203, continue to return step 202 and detected for described 3 leading of mode of operation of leading and whether connect extremely in scheduled duration.
In order better to explain technology contents of the present invention, a kind of electrocardio of the present invention drives an example structure block diagram that leads and automatically switch, as shown in Figure 3:
a kind of electrocardio drives the device automatically switching that leads to comprise:
the mode decision module 301 of leading, for judging current cardiac diagnosis lead mode of operation;
lead and connect abnormal judge module 302, be connected with the described mode decision module 301 of leading, for be judged as 12 lead or 5 lead that driving under pattern leads and whether connect abnormal, or 3 lead under pattern arbitrary lead whether connect abnormal;
lead signals quality judge module 303, is connected abnormal judge module 302 and is connected with described leading, for other signal qualitys that lead except described driving is led are judged, and select the best passage that leads of signal quality;
the driving handover module 304 that leads, is connected with described lead signals quality judge module 303, is switched to the best passage that leads of described signal quality carries out ECG signal sampling for driving is led.
In order better to explain technology contents of the present invention, a kind of electrocardio of the present invention drives another example structure block diagram that leads and automatically switch, as shown in Figure 4:
as prioritization scheme further, a kind of electrocardio drives the device automatically switching that leads also to comprise:
prompting alarm module 305, is connected abnormal judge module 302 and is connected with described leading, if lead and connect extremely for judgement, and alarm output.
the foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. electrocardio drives a device that leads and automatically switch, and it is characterized in that, comprises
The mode decision module of leading, for judging current cardiac diagnosis lead mode of operation;
Lead and connect abnormal judge module, be connected with the described mode decision module of leading, for be judged as 12 lead or 5 lead that driving under pattern leads and whether connect abnormal, or 3 lead under pattern arbitrary lead whether connect abnormal;
Lead signals quality judge module, is connected abnormal judge module with described leading and is connected, and for other signal qualitys that lead except described driving is led are judged, and selects the best passage that leads of signal quality;
The driving handover module that leads, is connected with described lead signals quality judge module, is switched to the best passage that leads of described signal quality carries out ECG signal sampling for driving is led.
2. a kind of electrocardio as claimed in claim 1 drives the device that leads and automatically switch, and it is characterized in that, also comprise,
Pre-set module, be connected abnormal judge module and be connected with leading with the described mode decision module of leading, for setting in advance that cardiac diagnosis lead pattern and 12 is led or 5 leading or 3 drivings of leading under pattern are led.
3. a kind of electrocardio as claimed in claim 1 or 2 drives the device that leads and automatically switch, and it is characterized in that, also comprise,
Prompting alarm module, is connected abnormal judge module with described leading and is connected, if lead and connect extremely for judgement, and alarm output.
4. electrocardio drives the method for leading and automatically switching, and it is characterized in that, comprises the steps:
Step 1, judge current cardiac diagnosis lead mode of operation;
Step 2, as being judged as 12 pattern or 5 patterns of leading of leading, continue judge to drive to lead under this pattern whether connect extremely; Connect extremely if judgement drives to lead, enter step 3;
Step 3, to leading under pattern in 12 patterns or 5 of leading, other signal qualitys that lead except described driving is led judge, and select the best passage that leads of signal quality;
Step 4, driving is led and is switched to the best passage that leads of described signal quality and carries out ECG signal sampling.
5. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 4, it is characterized in that, after described step 1, also comprise,
Step 11, as be judged as 3 lead pattern continue to judge under this pattern arbitrary lead whether connect abnormal;
If leading, step 12 judgement connects extremely, alarm output.
6. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 5, it is characterized in that, in described step 11, if judgement judges that the connection of leading is not abnormal, enters step 14:
Keep the 3 constant ECG signal samplings that carry out of pattern that lead, repeated execution of steps 11 in scheduled duration.
7. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 6, it is characterized in that, also comprise in described step 14, each is led and connects the detection of signal quality, and select the best passage that leads of signal quality, driving is led and is switched to the best passage that leads of described signal quality and carries out the step of ECG signal sampling.
8. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 4, it is characterized in that, in described step 2, driving as judged leads does not connect extremely, keep 12 mode of operations or 5 of leading to lead that mode of operation is constant carries out ECG signal sampling, and in scheduled duration repeated execution of steps 2.
9. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 4, it is characterized in that, in described step 2, as judgement drives the connection of leading abnormal, carries out alarm output.
10. a kind of electrocardio drives the method for leading and automatically switching as claimed in claim 4, it is characterized in that, after described step 4, also comprise that continuing to return step 2 in scheduled duration detects described 12 the lead drivings of mode of operation of mode of operation or 5 of leading and lead whether connect abnormal step.
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