CN2696540Y - Cardiac pacemaker signal picking up device - Google Patents
Cardiac pacemaker signal picking up device Download PDFInfo
- Publication number
- CN2696540Y CN2696540Y CN 200320115099 CN200320115099U CN2696540Y CN 2696540 Y CN2696540 Y CN 2696540Y CN 200320115099 CN200320115099 CN 200320115099 CN 200320115099 U CN200320115099 U CN 200320115099U CN 2696540 Y CN2696540 Y CN 2696540Y
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- China
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- circuit
- positive
- operational amplifier
- level
- resistance
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- Electrotherapy Devices (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model discloses a cardiac pacemaker signal picking up device. After body surface signals sent by a body surface collector are amplified by a difference amplifying circuit (A) and are compared with an electrical level comparing circuit (B), pacemaker signals are picked up, then the pacemaker signals are converted into positive electrical level pacemaker signals by a positive and negative electrical level conversion circuit (C), and at last, the positive electrical level pacemaker signals are output by an OR gate (U4). The pacemaker signals can be processed and picked up from the body surface signals obtained from the body surface collector by the cardiac pacemaker signal picking up device through directly using a hardware mode, and software does not need to be used for carrying out the high sampling analysis. The cardiac pacemaker signal picking up device does not occupy the system and the storing resources, and has high signal picking up precision.
Description
Affiliated technical field
This reality is novel to relate to a kind of elecrocardiogram recorder.
Background technology
Cardiac pacemaker is extensive use of clinically, and the heart patient who wears pacemaker at present is a lot.Existing a lot of cardiac work up equipment can record analysis contain the electrocardiogram of pacer signal, thereby the doctor can understand the function and the operating position of pacemaker.Yet the detection record of pacing signal generally is that certain or a plurality of electrocardiogram that leads are carried out high sampled point record at present, pick a little then after, keep the peak of sampling, pass through software analysis method recognition and verification pacing signal again.This method need write down the ECG data of a large amount of high sampling rates, and occupying system resources and storage resources are many.
Summary of the invention
The purpose of this utility model just provides a kind of cardiac pacing dector, this kind cardiac pacing dector can directly be handled pacing signal from the body surface ecg that the body surface harvester obtains and extract, need not use software to carry out high sampling analysis, do not take system and storage resources, and it extracts the precision height of signal.
This utility model solves its technical problem, the technical scheme that is adopted is: a kind of cardiac pacing dector, be used for the body surface signal processing that the body surface harvester collects and extract pacing signal, its characteristics are: the outfan of body surface harvester links to each other with the electrode input end of differential amplifier circuit, the outfan of differential amplifier circuit links to each other with the input of level comparison circuit, the outfan of level comparison circuit joins with the input of positive and negative level shifting circuit again, the outfan of positive and negative level shifting circuit with or the door input link to each other.
The body surface signal that body surface harvester of the present utility model is gathered relatively takes out pacing signal in the back by level comparison circuit after differential amplifier circuit amplifies, be converted to the positive level pacing signal through positive and negative level shifting circuit again, after or door output.
Compared with prior art, the beneficial effects of the utility model are: the body surface signal can directly be exported independent positive level pacemaker impulse signal after made of hardware circuits which process of the present utility model, analyzes for the electrocardio checkout equipment.And need not carry out the sampling of high bandwidth, high sampling rate to electrocardiogram, and depositing a large amount of sample information in memorizer, the reuse software approach carries out complicated analysis, affirmation, thereby does not take system and storage resources; Simultaneously because this utility model adopts the extraction threshold values of the pacing signal that hardware approach directly sets, that it is sampled is accurate, precision is high; And its composition only is made of several simple circuit such as differential amplifier circuit, level comparison circuit, simple in structure, cost is low, enforcement is convenient, easily.
Specifically constituting of above-mentioned differential amplifier circuit: the electrode input end of operational amplifier is through the output lead of current-limiting resistance junctor table harvester, the outfan of operational amplifier is through two feedback resistance ground connection of serial connection, and the junction of two resistance also links to each other with the negative input of operational amplifier.
Above-mentioned level comparison circuit and positive and negative level shifting circuit are linked to be by same circuit, it specifically constitutes: the negative input of the electrode input end of positive level operational amplifier and negative level operational amplifier links to each other with the power supply middle-end through coupling resistance, also links to each other with the outfan of differential amplifier circuit through coupling capacitance simultaneously; First, second, third totally 3 comparison resistances be connected in series mutually, and by the other end of first comparison resistance link to each other with positive source, the other end of the 3rd comparison resistance then with power supply middle-end link to each other, first, second two comparison resistances connecting place links to each other with the negative input of positive level operational amplifier, and second, third two comparison resistances connecting place then links to each other with the electrode input end of negative level operational amplifier.
Adopt the existing differential amplifier circuit of above such maturation and level comparison circuit and positive and negative level shifting circuit, make this utility model be convenient to implement, operate reliable, stable performance more.
Description of drawings
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail:
Fig. 1 is a circuit structure block diagram of the present utility model.
Fig. 2 is a kind of physical circuit principle schematic of this utility model embodiment.
The specific embodiment
Fig. 1 illustrates, a kind of specific embodiment of the present utility model is: a kind of cardiac pacing dector, be used for the body surface signal processing that the body surface harvester collects and extract pacing signal, it consists of, the outfan of body surface harvester links to each other with the electrode input end of differential amplifier circuit (A), the outfan of differential amplifier circuit (A) links to each other with the input of level comparison circuit (B), the outfan of level comparison circuit (B) joins with the input of positive and negative level shifting circuit (C) again, the outfan of positive and negative level shifting circuit (C) with or door (U
4) input links to each other.
Fig. 2 illustrates, and the differential amplifier circuit of embodiment (A) specifically constitutes: operational amplifier (U
1) electrode input end through current-limiting resistance (R
1) output lead of junctor table harvester, operational amplifier (U
1) outfan through the serial connection two feedback resistance (R
2, R
3) ground connection, two resistance (R
2, R
3) the junction also with operational amplifier (U
1) negative input link to each other.
Fig. 2 also illustrates, and level comparison circuit of present embodiment (B) and positive and negative level shifting circuit (C) are linked to be by same circuit, and it specifically constitutes: positive level operational amplifier (U
2) electrode input end and negative level operational amplifier (U
3) negative input all through coupling resistance (R
4) link to each other with the power supply middle-end, simultaneously also through coupling capacitance (C
1) with the outfan of differential amplifier circuit (A) (also be operational amplifier U
1Outfan) link to each other; First, second, third totally 3 comparison resistance (R
5, R
6, R
7) be connected in series mutually, and by the first comparison resistance (R
5) the other end link to each other with positive source, the 3rd comparison resistance (R
7) the other end then with power supply middle-end link to each other; First, second two comparison resistance (R
5, R
6) connecting place and positive level operational amplifier (U
2) negative input link to each other second, third two comparison resistance (R
6, R
7) connecting place then with negative level operational amplifier (U
3) electrode input end link to each other.
Power supply middle-end in the present embodiment is meant and is communicated with power supply and current potential is lower than positive source and is higher than a certain potential point of power cathode, it i.e. certain two battery junction in the series battery, also a certain intermediate potential point that obtains from the power supply dividing potential drop by alternate manner (as electric resistance partial pressure).
The concrete operation principle of present embodiment is: the body surface signal that comprises pacing signal that is obtained by the body surface harvester carries out after difference amplifies through differential amplifier circuit (A), by its operational amplifier (U
1) outfan through coupling capacitance (C
1) coupling resistance (R
4) every the positive level operational amplifier (U that directly is coupled to level shifting circuit (C)
2) electrode input end and negative level operational amplifier (U
3) negative input.First, second two resistance (R
5, R
6) connecting place (also is positive level operational amplifier (U
2) negative input) voltage (V
1) be the positive polarity pacing signal threshold level of setting; When positive pacing signal is arranged, positive level operational amplifier (U
2) electrode input end on the body surface signal level (V of difference after amplifying
0) greater than this positive polarity pacing signal threshold level (V
1), positive level operational amplifier (U
2) the pacemaker impulse signal of outfan output positive level.Similarly, second, third two resistance (R
6, R
7) connecting place (also is negative level operational amplifier (U
3) electrode input end) voltage (V
2) be the negative polarity pacing signal threshold level (V that sets
2); Shoulder when fighting signal negative level operational amplifier (U
3) negative input on the body surface signal level (V of difference after amplifying
0) be lower than this negative polarity pacing signal threshold level (V
2), negative level operational amplifier (U
3) the pacemaker impulse signal of outfan output positive level.So then finished and to have extracted above the pacing signal of threshold level and the positive polarity pacing signal is left positive level, the negative polarity pacing signal transfers the effect of positive level pacing signal to, and the pacemaker impulse signal of last positive and negative level operational amplifier output is through valve (U
4) output, use for the electrocardio checkout equipment analysis of postorder.
The electrocardio of postorder detects, analytical equipment can be analyzed this pacing signal separately; Also can be simultaneously with two operational amplifier (U of level shifting circuit (C)
2, U
3) the signal of outfan take out simultaneously, with positive level operational amplifier (U
2) have the pacemaker impulse signal in signal when output to be designated as positive polarity, and with negative level operational amplifier (U
3) have the pacemaker impulse signal in signal when output to be designated as negative polarity, analyze simultaneously on the ECG signal that again this pacing signal is added to.
Cardiac pacing dector of the present utility model promptly can be made into an independent product, links to each other supporting use with body surface Acquisition Instrument, electrocardio check and analysis equipment; Also can be used as an inner built-up circuit of electrocardio check and analysis equipment, make electrocardioscanner can realize the function of hardware extraction pacing signal of the present utility model.These two kinds enforcements, usings method all should belong to protection domain of the present utility model.
Claims (3)
1, a kind of cardiac pacing dector, be used for the body surface signal processing that the body surface harvester collects and extract pacing signal, it is characterized in that: the outfan of body surface harvester links to each other with the electrode input end of differential amplifier circuit (A), the outfan of differential amplifier circuit (A) links to each other with the input of level comparison circuit (B), the outfan of level comparison circuit (B) joins with the input of positive and negative level shifting circuit (C) again, the outfan of positive and negative level shifting circuit (C) with or door (U
4) input links to each other.
2, a kind of cardiac pacing dector according to claim 1, it is characterized in that: described differential amplifier circuit (A) specifically constitutes: operational amplifier (U
1) electrode input end through current-limiting resistance (R
1) output lead of junctor table harvester, operational amplifier (U
1) outfan through the serial connection two feedback resistance (R
2, R
3) ground connection, two resistance (R
2, R
3) the junction also with operational amplifier (U
1) negative input link to each other.
3, a kind of cardiac pacing dector according to claim 1 is characterized in that: described level comparison circuit (B) and positive and negative level shifting circuit (C) are linked to be by same circuit, and it specifically constitutes: positive level operational amplifier (U
2) electrode input end and negative level operational amplifier (U
3) negative input through coupling resistance (R
4) link to each other with the power supply middle-end, simultaneously also through coupling capacitance (C
1) link to each other with the outfan of differential amplifier circuit (A); First, second, third totally 3 comparison resistance (R
5, R
6, R
7) be connected in series mutually, and by the first comparison resistance (R
5) the other end link to each other with positive source, the 3rd comparison resistance (R
7) the other end then with power supply middle-end link to each other first, second two comparison resistance (R
5, R
6) connecting place and positive level operational amplifier (U
2) negative input link to each other second, third two comparison resistance (R
6, R
7) connecting place then with negative level operational amplifier (U
3) electrode input end link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115099 CN2696540Y (en) | 2003-11-27 | 2003-11-27 | Cardiac pacemaker signal picking up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115099 CN2696540Y (en) | 2003-11-27 | 2003-11-27 | Cardiac pacemaker signal picking up device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2696540Y true CN2696540Y (en) | 2005-05-04 |
Family
ID=34762236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320115099 Expired - Fee Related CN2696540Y (en) | 2003-11-27 | 2003-11-27 | Cardiac pacemaker signal picking up device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2696540Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344007A (en) * | 2015-09-02 | 2016-02-24 | 深圳市理邦精密仪器股份有限公司 | Cardiac electric pacing pulse signal detecting device and electrocardiogram equipment |
| CN107847174A (en) * | 2015-10-08 | 2018-03-27 | 深圳迈瑞生物医疗电子股份有限公司 | Pacing signal processing method, system and ECG monitor |
-
2003
- 2003-11-27 CN CN 200320115099 patent/CN2696540Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344007A (en) * | 2015-09-02 | 2016-02-24 | 深圳市理邦精密仪器股份有限公司 | Cardiac electric pacing pulse signal detecting device and electrocardiogram equipment |
| CN105344007B (en) * | 2015-09-02 | 2018-07-24 | 深圳市理邦精密仪器股份有限公司 | The detection device and its ecg equipment of electrocardio pacemaker impulse signal |
| CN107847174A (en) * | 2015-10-08 | 2018-03-27 | 深圳迈瑞生物医疗电子股份有限公司 | Pacing signal processing method, system and ECG monitor |
| US10973465B2 (en) | 2015-10-08 | 2021-04-13 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd | Pacing signal processing method, system and electrocardiogram monitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |