EP0302865A1 - Electrocardiographe - Google Patents
ElectrocardiographeInfo
- Publication number
- EP0302865A1 EP0302865A1 EP87902342A EP87902342A EP0302865A1 EP 0302865 A1 EP0302865 A1 EP 0302865A1 EP 87902342 A EP87902342 A EP 87902342A EP 87902342 A EP87902342 A EP 87902342A EP 0302865 A1 EP0302865 A1 EP 0302865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrocardiograph
- fcb
- display
- waveform data
- sta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004458 analytical method Methods 0.000 claims description 14
- 239000000872 buffer Substances 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000005070 sampling Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 239000001733 1,4-Heptonolactone Substances 0.000 description 2
- 102220554196 APC membrane recruitment protein 1_E41A_mutation Human genes 0.000 description 2
- 239000001729 Ammonium fumarate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000002656 Distearyl thiodipropionate Substances 0.000 description 2
- 108010061309 E021 Proteins 0.000 description 2
- 241000985284 Leuciscus idus Species 0.000 description 2
- 102220558662 Nuclear protein 1_E43A_mutation Human genes 0.000 description 2
- 102220492465 Selenoprotein V_E19D_mutation Human genes 0.000 description 2
- 239000003490 Thiodipropionic acid Substances 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 239000004410 anthocyanin Substances 0.000 description 2
- 235000010208 anthocyanin Nutrition 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229940096118 ella Drugs 0.000 description 2
- 239000000216 gellan gum Substances 0.000 description 2
- 235000010492 gellan gum Nutrition 0.000 description 2
- 239000000231 karaya gum Substances 0.000 description 2
- 235000010494 karaya gum Nutrition 0.000 description 2
- 239000004177 patent blue V Substances 0.000 description 2
- 235000012736 patent blue V Nutrition 0.000 description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 102220289725 rs778831047 Human genes 0.000 description 2
- 235000019303 thiodipropionic acid Nutrition 0.000 description 2
- 239000001393 triammonium citrate Substances 0.000 description 2
- OOLLAFOLCSJHRE-ZHAKMVSLSA-N ulipristal acetate Chemical compound C1=CC(N(C)C)=CC=C1[C@@H]1C2=C3CCC(=O)C=C3CC[C@H]2[C@H](CC[C@]2(OC(C)=O)C(C)=O)[C@]2(C)C1 OOLLAFOLCSJHRE-ZHAKMVSLSA-N 0.000 description 2
- SUBDBMMJDZJVOS-UHFFFAOYSA-N 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole Chemical compound N=1C2=CC(OC)=CC=C2NC=1S(=O)CC1=NC=C(C)C(OC)=C1C SUBDBMMJDZJVOS-UHFFFAOYSA-N 0.000 description 1
- 102220554171 APC membrane recruitment protein 1_E32A_mutation Human genes 0.000 description 1
- 102220554193 APC membrane recruitment protein 1_E38A_mutation Human genes 0.000 description 1
- 102220554194 APC membrane recruitment protein 1_E39A_mutation Human genes 0.000 description 1
- 102100028247 Abl interactor 1 Human genes 0.000 description 1
- 239000004229 Alkannin Substances 0.000 description 1
- 239000004251 Ammonium lactate Substances 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 239000004257 Anoxomer Substances 0.000 description 1
- 101100278882 Arabidopsis thaliana E2FB gene Proteins 0.000 description 1
- 101100278883 Arabidopsis thaliana E2FC gene Proteins 0.000 description 1
- 101100278885 Arabidopsis thaliana E2FE gene Proteins 0.000 description 1
- 239000004261 Ascorbyl stearate Substances 0.000 description 1
- 239000001878 Bakers yeast glycan Substances 0.000 description 1
- 239000004255 Butylated hydroxyanisole Substances 0.000 description 1
- 239000004322 Butylated hydroxytoluene Substances 0.000 description 1
- 239000001749 Calcium fumarate Substances 0.000 description 1
- 239000001736 Calcium glycerylphosphate Substances 0.000 description 1
- 239000002970 Calcium lactobionate Substances 0.000 description 1
- 102220557494 Caspase-4_E24A_mutation Human genes 0.000 description 1
- 239000001884 Cassia gum Substances 0.000 description 1
- 239000004287 Dehydroacetic acid Substances 0.000 description 1
- 239000003508 Dilauryl thiodipropionate Substances 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- 102100039578 ETS translocation variant 4 Human genes 0.000 description 1
- 239000004249 Erythorbin acid Substances 0.000 description 1
- 239000004262 Ethyl gallate Substances 0.000 description 1
- 239000002714 Extracts of rosemary Substances 0.000 description 1
- 239000004214 Fast Green FCF Substances 0.000 description 1
- 239000004263 Guaiac resin Substances 0.000 description 1
- 239000004284 Heptyl p-hydroxybenzoate Substances 0.000 description 1
- 101000813747 Homo sapiens ETS translocation variant 4 Proteins 0.000 description 1
- 101000904152 Homo sapiens Transcription factor E2F1 Proteins 0.000 description 1
- 101000904150 Homo sapiens Transcription factor E2F3 Proteins 0.000 description 1
- 101000895882 Homo sapiens Transcription factor E2F4 Proteins 0.000 description 1
- 101000866340 Homo sapiens Transcription factor E2F6 Proteins 0.000 description 1
- 101000866298 Homo sapiens Transcription factor E2F8 Proteins 0.000 description 1
- 102220511074 Hydroxycarboxylic acid receptor 3_E31D_mutation Human genes 0.000 description 1
- 239000004233 Indanthrene blue RS Substances 0.000 description 1
- 239000002310 Isopropyl citrate Substances 0.000 description 1
- 102220609391 N-alpha-acetyltransferase 60_E37F_mutation Human genes 0.000 description 1
- 102220558663 Nuclear protein 1_E33D_mutation Human genes 0.000 description 1
- 102220558745 Nuclear protein 1_E33Q_mutation Human genes 0.000 description 1
- 102220558693 Nuclear protein 1_E36A_mutation Human genes 0.000 description 1
- 239000004396 Octenyl succinic acid modified gum arabic Substances 0.000 description 1
- 239000003216 Oxystearin Substances 0.000 description 1
- 239000001825 Polyoxyethene (8) stearate Substances 0.000 description 1
- 239000001747 Potassium fumarate Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- 102220477492 Protein phosphatase 1 regulatory subunit 12C_E35F_mutation Human genes 0.000 description 1
- 239000004231 Riboflavin-5-Sodium Phosphate Substances 0.000 description 1
- 102220616560 S-phase kinase-associated protein 2_E33F_mutation Human genes 0.000 description 1
- 102220492463 Selenoprotein V_E19A_mutation Human genes 0.000 description 1
- 102220492483 Selenoprotein V_E32D_mutation Human genes 0.000 description 1
- 102220468573 Serine/Arginine-related protein 53_E40A_mutation Human genes 0.000 description 1
- 239000001744 Sodium fumarate Substances 0.000 description 1
- 239000004283 Sodium sorbate Substances 0.000 description 1
- 102220557502 Sperm acrosome-associated protein 5_E37A_mutation Human genes 0.000 description 1
- 102220557631 Sperm acrosome-associated protein 5_E37D_mutation Human genes 0.000 description 1
- 102220470363 Thymosin beta-10_E31A_mutation Human genes 0.000 description 1
- 102100024026 Transcription factor E2F1 Human genes 0.000 description 1
- 102220519680 Transcription factor E2F1_E14D_mutation Human genes 0.000 description 1
- 102100024027 Transcription factor E2F3 Human genes 0.000 description 1
- 102100021783 Transcription factor E2F4 Human genes 0.000 description 1
- 102100031631 Transcription factor E2F6 Human genes 0.000 description 1
- 102100031555 Transcription factor E2F8 Human genes 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 239000001809 ammonium phosphatide Substances 0.000 description 1
- 235000010986 ammonium phosphatide Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000001654 beetroot red Substances 0.000 description 1
- 235000012677 beetroot red Nutrition 0.000 description 1
- 239000004161 brilliant blue FCF Substances 0.000 description 1
- 235000012745 brilliant blue FCF Nutrition 0.000 description 1
- 239000004109 brown FK Substances 0.000 description 1
- 235000019282 butylated hydroxyanisole Nutrition 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 102220426871 c.117G>C Human genes 0.000 description 1
- 239000000648 calcium alginate Substances 0.000 description 1
- 235000010410 calcium alginate Nutrition 0.000 description 1
- 239000001201 calcium disodium ethylene diamine tetra-acetate Substances 0.000 description 1
- 239000004281 calcium formate Substances 0.000 description 1
- 235000019255 calcium formate Nutrition 0.000 description 1
- 239000001527 calcium lactate Substances 0.000 description 1
- 239000001362 calcium malate Substances 0.000 description 1
- 239000004295 calcium sulphite Substances 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 239000001427 calcium tartrate Substances 0.000 description 1
- 235000011035 calcium tartrate Nutrition 0.000 description 1
- 239000004106 carminic acid Substances 0.000 description 1
- 235000012730 carminic acid Nutrition 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004148 curcumin Substances 0.000 description 1
- 235000019258 dehydroacetic acid Nutrition 0.000 description 1
- 235000010389 delta-tocopherol Nutrition 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 108010003984 dextranicin-24 Proteins 0.000 description 1
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 description 1
- 239000001177 diphosphate Substances 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 239000000555 dodecyl gallate Substances 0.000 description 1
- 235000010386 dodecyl gallate Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004318 erythorbic acid Substances 0.000 description 1
- 235000010350 erythorbic acid Nutrition 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 235000010193 gold Nutrition 0.000 description 1
- 239000004333 gold (food color) Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 235000019251 heptyl p-hydroxybenzoate Nutrition 0.000 description 1
- 239000004313 iron ammonium citrate Substances 0.000 description 1
- 239000000252 konjac Substances 0.000 description 1
- 235000010485 konjac Nutrition 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 235000010420 locust bean gum Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004311 natamycin Substances 0.000 description 1
- 235000010298 natamycin Nutrition 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000467 phytic acid Substances 0.000 description 1
- 235000019320 polyoxyethene (8) stearate Nutrition 0.000 description 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 description 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 description 1
- 239000001816 polyoxyethylene sorbitan tristearate Substances 0.000 description 1
- 235000010988 polyoxyethylene sorbitan tristearate Nutrition 0.000 description 1
- 239000004175 ponceau 4R Substances 0.000 description 1
- 235000012731 ponceau 4R Nutrition 0.000 description 1
- 239000000737 potassium alginate Substances 0.000 description 1
- 235000010408 potassium alginate Nutrition 0.000 description 1
- 239000004300 potassium benzoate Substances 0.000 description 1
- 235000010235 potassium benzoate Nutrition 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 239000004331 potassium propionate Substances 0.000 description 1
- 235000010332 potassium propionate Nutrition 0.000 description 1
- 239000004302 potassium sorbate Substances 0.000 description 1
- 235000010241 potassium sorbate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 239000000473 propyl gallate Substances 0.000 description 1
- 235000010388 propyl gallate Nutrition 0.000 description 1
- 238000012950 reanalysis Methods 0.000 description 1
- 239000004180 red 2G Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 102220316416 rs1057522140 Human genes 0.000 description 1
- 102220215119 rs1060503548 Human genes 0.000 description 1
- 102220006330 rs116840816 Human genes 0.000 description 1
- 102220279937 rs201958318 Human genes 0.000 description 1
- 102200092863 rs34289459 Human genes 0.000 description 1
- 102200124760 rs587777729 Human genes 0.000 description 1
- 102200055608 rs61732504 Human genes 0.000 description 1
- 102220091740 rs876657919 Human genes 0.000 description 1
- 102220145630 rs886058977 Human genes 0.000 description 1
- 102220256433 rs989352819 Human genes 0.000 description 1
- 102220270817 rs991773402 Human genes 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000011091 sodium acetates Nutrition 0.000 description 1
- 239000004402 sodium ethyl p-hydroxybenzoate Substances 0.000 description 1
- 235000010226 sodium ethyl p-hydroxybenzoate Nutrition 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 239000004296 sodium metabisulphite Substances 0.000 description 1
- 235000010262 sodium metabisulphite Nutrition 0.000 description 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Substances [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000004307 sodium orthophenyl phenol Substances 0.000 description 1
- 235000010294 sodium orthophenyl phenol Nutrition 0.000 description 1
- 239000001476 sodium potassium tartrate Substances 0.000 description 1
- 239000004404 sodium propyl p-hydroxybenzoate Substances 0.000 description 1
- 235000010230 sodium propyl p-hydroxybenzoate Nutrition 0.000 description 1
- 235000019250 sodium sorbate Nutrition 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000001797 sucrose acetate isobutyrate Substances 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 102220532839 tRNA wybutosine-synthesizing protein 3 homolog_E35D_mutation Human genes 0.000 description 1
- 102220532841 tRNA wybutosine-synthesizing protein 3 homolog_E36D_mutation Human genes 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 239000004250 tert-Butylhydroquinone Substances 0.000 description 1
- 235000019281 tert-butylhydroquinone Nutrition 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 239000002076 α-tocopherol Substances 0.000 description 1
- 235000004835 α-tocopherol Nutrition 0.000 description 1
- 239000002446 δ-tocopherol Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/332—Portable devices specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/333—Recording apparatus specially adapted therefor
- A61B5/335—Recording apparatus specially adapted therefor using integrated circuit memory devices
Definitions
- This invention relates to an electrocardiograph. It is the object of the present invention to provide a compact, portable electrocardiograph device which can display heart beat pulses in graphical form, and include analysis of the waveform for standard medically diagnosed heart problems.
- an electrocardiograph comprising input terminal means, an analog to digital converter for 0 converting electrical signals on said input terminal means into digital signals, a memory device for storing said digital signals and electronic display means for graphically displaying the digital signals.
- said electrocardiograph comprises 5 processor means which is capable of receiving said digital signals and recognising the digital signals as being data representative of electrocardiograph signals.
- said processor means upon receiving Z-tt said data, divides the data into waveform data which is representative of a heart beat trace.
- the display means comprises a liquid crystal display having a screen having from 60 X 150 to 128 X 516 pixels so as to provide good trace resolution of the digital signals, which are representative of electrocardiograph signals applied to the input terminal means.
- the device includes a microprocessor for controlling various aspects of the display of information on the LCD display.
- a microprocessor for controlling various aspects of the display of information on the LCD display.
- electrocardiograph device could be used for other applications and hence could be regarded as a portable oscilloscope for general application rather than for use as an electrocardiograph.
- Figure 1 is a schematic view of an embodiment of the invention
- Figure 2 shows the underside of the device
- Figure 3 shows an end view of the device
- Figure 4 shows a typical circuit realisation for an embodiment of the invention
- Figures 5 to 13 show the preferred logic for the device of the invention.
- the device shown in Figures 1 to 3 comprises a portable electrocardiograph 2 having a housing 4 and an LCD screen 6.
- the device has control switches 8 which the user can use for controlling the selection of input information, display parameters, and output functions, as will be described hereinafter.
- the underside of the housing 4 is provided with three electrodes 10, 12, 14 which can be placed directly upon the skin of a patient, pre ⁇ ferably near the patient's heart, and have induced thereon electrocardiograph signals.
- the device analyses the signals and displays them as a trace 16 on the screen 6.
- the device may also include a loudspeaker or similar electro-acoustic device 18 for generating an audible signal each time a heart beat pulse is detected, as indicated by the pulses 20, 22 in the trace 16.
- the end of the housing includes a multi-terminal connector 24 for input/output of data and control information to peripheral devices such as printer, transmitters or external computers (not shown) .
- the device also includes terminals 26 for battery charging and input leads for remote electrodes which can be applied at various points on the patient's body, in accordance with known practices. If external leads are connected to the terminals 26, the electrodes 10, 12, 14 could be automatically isolated.
- FIG. 4 illustrates a circuit realisation for implementing the principles of the invention.
- the circuit includes a battery 28 which is preferably rechargable. Output from the battery is connected to a power regulating circuit 30 which also produces the necessary supply levels for the remainder of the circuitry.
- the illustrated circuit includes four input terminals 32, 34, 36, 38 and a common input terminal 40. In the simplest arrangement, the input terminals 32 and 34 would be connected to the elec ⁇ trodes 10 and 12 mounted on the housing 4. The common terminal 40 would be connected to the central electrode 14 on the housing. This configuration would provide sufficient signal from the patient's skin in order to display a trace 16 on the LCD screen 6. It is possible however to utilize leads and remote electrodes and in the illustrated circuit there is provision for four remote electrodes as well as the common electrode.
- the input terminals are connected via input buffers 42 to selector switches 44 to the inputs of a differential amplifier 46.
- the common terminal 40 is connected to the outputs of the buffers 42 so as to effectively remove DC offsets which would affect all of the input terminals.
- the switches 44 operate as selector switches so as to determine which of the terminals 32, 34, 36, 38 are connected to the differ ⁇ ential amplifier 46.
- the switches 44 are controlled by control signals generated by a microprocessor 50 in response to inputs on the manual switches 8. The control signals are applied via control lines 52.
- Output from the differential amplifier 46 is applied to the input of a pair of notch filters 54, 56 via a buffer amplifier 58.
- the filters 54 and 56 have their notches at 50Hz and 60Hz so as to remove induced noise signals at those frequencies from mains supplies.
- Both filters are provided so that the same equipment can be used in the environment of 50Hz and 60Hz main supplies.
- Output from the notch filter 56 is -applied to a low pass filter 60 which typically has a cut off frequency of say 100Hz.
- Output from the filter 60 is applied to an analog to digital converter 62 via a high sensitivity line 64 or via a low sensitivity line 66 which reduces the amplitude by means of a resistive divider.
- the selection of the high or low sensitivity input to the converter 62 is subject to the control of programmes within the microprocessor 50.
- the converter 62 preferably comprises an ADC 0844 circuit which has an eight bit parallel output and a sampling rate which is selectable in accordance with programmes stored within the microprocessor 50. Typically, the sampling rate would be 1ms.
- Output from the converter 62 is input- ted via lines 68 to the microprocessor 50 and to a graphics controller circuit 70 for the LCD screen 6.
- the microprocessor preferably includes sufficient memory for storage of programmes to control the display parameters and input/output functions associ- ated with the circuit.
- the microprocessor has exter ⁇ nal input/output lines 72 which extend to the connec ⁇ tor 24 shown in Figure 3.
- the microprocessor has data input/output lines 74 which connect into data ports on the controller circuit 70.
- the circuit 70 has data input/output lines 76 coupled to a memory RAM 78.
- the RAM 78 has sufficient memory to store data represent ⁇ ative of the heart beat trace 16 for display purposes and for holding purposes.
- the capacity of the RAM 64 is typically 64k.
- the microprocessor 50 comprises a 6801 circuit
- the circuit 70 comprises an E-1330 circuit
- the RAM 78 comprises a 6116 circuit.
- Figure 5 shows the overall flow chart which commences at power-on at step 80.
- initialising step 82 in which various parts of the circuits such as the microprocessor 50, memory 78, display controller 70 and input circuits 44 and 62 are initialised to the proper modes of opera ⁇ tion.
- step 84 presents copyright notice, basic system status information and current setup state for the user for a short time. Information for display at this time could include time base and sensitivity settings, as well as any recorded abnor ⁇ malities memorised on previous operating sessions.
- step 86 which prepares the display for normal operating state, and starts the real-time generating hardware, which creates the regular time interval interrupts on which the measure ⁇ ment and timing of events rely.
- step 88 which determines if a one second interval has occurred. If no, then next is step 92, as nothing is required to be done yet. If yes, then step 90 is performed which is a subprogram, to carry out all the system operations required once every second. The logic in step 90 is separately shown in Figure 6.
- the routine returns back to step 92 which is a check if the display queue is empty. If yes, no new waveform points are ready, so next is step 96.
- Step 94 is a subprogram to prepare and display the waveform, and its logic is shown in Figure 7.
- the following step is 96 which checks if any operator functions have been requested by depression of one of the input switches 8. If no, the program loops back to step 88 to repeat the above sequence continuously. If yes, the step 98 is carried out.
- Step 98 is a subprogram to carry out any requested operations from the user and its logic is shown in Figure 8.
- Figure 6 shows the subprogram which processes operations required only occasionally, such as at one second intervals.
- the subprogram enters at step 100, from there to step 102, which resets the flag which was used to indicate that this subprogram operation is required, then the heart beat rate is calculated and displayed. This then proceeds to step 104, which analyses the waveform for fundamental deviations from normal. Step 106 checks for if any notable deviations exist. If no, proceeds to step 110 and exits from the subprogram. If yes, step 108 is carried out, which signals the fault on the display and audibly, then memorises the fault for latter recall. Step 110 is then performed exiting from the subprogram.
- Figure 7 shows the waveform display processing.
- the subprogram is entered at step 120, which leads to step 122 where the display scrolling flag is tested. If no, step 126 is next. If yes, step 124 is per ⁇ formed. This clears the flag, then updates the display scroll position and clears the current display column. Step 126 is next carried out which fetches the next display point which was determined to be available at step 92. The data is adjusted for scaling and offset, then converted to a display dot location and placed into the display memory. . The program proceeds to step 128 and exits back to the main program of Figure 5.
- Step 140 is entered from step 98 of Figure 5.
- the program proceeds to decision box step 142, where it is determined if a display control function is required. If yes, the program passes to step 144. Step 144 decides if display scaling adjustment is required. If yes, step 146 increases the range if a "+" button (one of the control switches 8) is also depressed and decreases the range if a "-" button (one of the control switches 8) is also pressed. If no, decision step 148 is next, which determines if display offset adjustment is required. If yes, step 150 proceeds to increase the offset if the "+ M button is pressed, or decrease the offset if the "-" ' button is pressed.
- step 152 determines if scan rate adjust- ment is required. If yes, step 154 increases the scan rate if the "+" button is pressed, or decreases the scan rate when the "-" button is pressed. If no, decision step 156 determines if display freeze is requested. If yes, step 158 sets the display hold flag, used by step 332 of Figure 13 to cease recording of more waveform points when a full screen trace is obtained. If no, next step 178 is carried out. All the steps 146, 150, 154, 158 all proceed to step 178 as described below. If no at step 142, then step 160 follows, here a decision is carried out, whether input or output is requested.
- step 162 calling subprogram D (shown in Figure 9) is carried out. If no, decision step 164 determines if a storage operation is, required. If yes, subprogram E (shown in Figure 10) is called at step 166. If no, decision step 168 determines if a waveform analysis is requested. If yes, step 170 calls subprogram F (shown in Figure 11) . If no, step 172 decides if a power off request has been made. If no, step 178 is carried out. If yes, step 174 turns off the display logic, enables backup power if any data is to be retained, sets several
- step 176 turns the power circuits 30 off, thus putting the circuits and processor out of opera ⁇ tion.
- Each subprogram call at steps 162, 166, 170 returns and proceeds to step 178, like other steps
- step 96 clears the operator function request flag interrogated in step 96, and proceeds to step 180 which returns to the main program of Figure 5.
- FIG. 9 shows the operations of the subprogram D, which performs input, output requests. Entry is
- step 204 determines from user entry which waveform is requested, and sent graphically to an external printer (not shown) which can be coupled via connector 24. If
- step 206 which decides if a waveform listing is requested. If yes, step 208 determines which waveform to print and then sends the numerical waveform points to the printer coupled via connector 24. • If no, step 210 determines if a
- step 212 determines from user input which waveform is to be loaded, and then reads the waveform numerical.data from the device connected at connector 24. If no,
- step 214 determines if a waveform analysis is requested. If no, step 222 exits from the subprogram. If yes, step 216 determines which waveform to analyse from user input. Step 218 follows and it calls the waveform analysis subprogram F. On return from the subprogram F, step 220 proceeds to print the results of the analysis on an external printer (not shown) which can be coupled via connector 24. All the steps 204, 208, 212, 220 proceed to step 222 which exits the subprogram D returning to step 162 of Figure 8.
- FIG 10 shows the flow chart of subprogram E, which processes requests for storage of waveforms. Entry is at step 240 which is followed by step 242 in which the user selects which of several stored waveforms is to be operated on. Next, a decision step 244 determines if a recall of the selected waveform is required. If yes, step 246 places the waveform display on hold, then transfers the saved waveform into the display. If no, decision step 248 determines if a save waveform operation is required. If yes, decision step 250 checks if the selected waveform is protected. If step 250 is yes, then step 254 displays a "protected" message to the user.
- step 250 If step 250 is no, then the content of the current waveform buffer is transferred to the selected storage area, then gener ⁇ ate a signal demonstrating that the memory has a stored waveform. If step 248 is no, then step 256, decides if the protect state is to be changed. If yes, the selected waveform protect flag is toggled to the opposite condition by step 258. This protects and unprotects alternately. The protected state is indicated. If no, decision step 260 determines if the selected waveform is to be removed. If yes, step 262 determines if the waveform is protected. If step 262 is yes, then step 254 signals the "protected" error. If step 262 is no, then clear the waveform buffer usage flag, effectively forgetting the stored waveform.
- step 260 If step 260 is no, the program passes to step 266. All the steps 246, 254, 258 and 264 proceed to step 266 which exits the subprogram back to step 166 of Figure 8.
- Figure 11 shows the logic of subprogram F, which analyses the heart beat waveforms. Entry is at step 280, proceeds to step 282. The display function is halted then the buffered waveform is checked against the standard medical conditions. Decision step 284 determines if a medical problem was found in the analysis. If no, then proceed with step 286 which indicates normal heart pattern and waveform statistics or characteristics. If no, then step 288 indicates the one or more possible diagnostic conditions found by the analysis, and permit display of statistics of the waveform.
- Step 290 Both steps 286 and 288 proceed to step 290 where it is decided if a reanalysis is required. If yes, return to step 282, or if no, proceed to step 292 which exits back to Figure 5 step 170.
- Figure 12 shows the flow chart for the real time interupt process, which runs as a separate program from the main program. It is started at a regular interval by a counter in the microprocessor 50. It is responsible for regular timing events. Entry is at step 300, which proceeds to step 302, which triggers a new input reading from the converter circuit 62.
- Step 304 next determines if a scan interval period has expired. If yes, then step 306 sets a flag for the main program to signal the scan time event and then restarts the scan interval counter.
- step 308 checks if a one second period has elapsed. If yes, step 310 sets a one second flag and restarts the one second period counter. If no, or after step 310, step 312 scans the control switches 8 and processes the key pressed signals. Step 314 is next carried out which exits the interupt process.
- Figure 13 shows the flow chart for data conver ⁇ sion interupt process, which runs as a separate program. It is started when the converter circuit item 62 has completed the operation triggered by the step 302 in Figure 12. Entry is at step 320, which proceeds to step 322 which reads the converted input data from item 62, and places it into the waveform buffer. Step 324 then checks if a scan period has elapsed.
- step 326 updates the cursor location and flags that a display scroll is required
- step 328 follows checking if the screen end has been reached. If step 324 is no, or step 328 is no,-then step 330 follows. If step 328 is yes then step 332 determines if the display halt flag is set. If step 328 is yes, the program proceeds to step 334. If step 328 is no, step 330 follows.
- Step 330 puts the new data point into the display queue.
- Step 334 follows which checks the waveform buffer for a pulse peak.
- Step 336 determines if a pulse was detected. If yes, step 338 stores the last pulse interval, signals a new pulse period is avail ⁇ able and give an audible pulse indication on item 18.
- Step 340 follows. If no, step 340 exits from the interupt process, stopping the interupt program and returning to the main program at the point prior to entry of the data conversion interupt program.
- the housing 4 is very compact and typically has the following dimensions 185 x 74 x 27 mm.
- 0080 is3flg equ 80h ; Input strobe flag 0040 is3irq equ 40h ; Input strobe interupt enable 0010 oss equ lOh ; output strobe 3 on read(0) or 7/06447
- Ports 15h-lfh are reserved for later 6801 versions
- controller 4001 glcdin equ glc+1 (in) data input from LCD controller 4000 glcdout equ glc (out) data out to VRAM and registers
- 0043 mread equ 43h gets the display storage at the cursor, may get 'n' bytes, as cursor advances in CSDIRx ; direction.
- RAM exists from 80h to ;0FFh, with stack allocated at the top of this area. 0080 RAMBASE org 80h
- E1E5 DD 94 std rtvalue Must determine if the button is pressed
- E1EC 27 00 beq nolsec ;skip when no second
- Ida b,scalindx ldx fscatbl abx Ida b,l,x ;get low 8 bit scaling factor mul addd #80 sta a,scatemp ;save intermediate result Ida a,0,x Ida b,convdat mul add b,scatemp adc a,#0 ; scaling(16)*conv(8) result (16) ; retain top 2 bytes of 3 byte result ; Ida b.horzpos
- E310 C6 20 Ida b,#32 ; number of ram bytes ; in a line on the display
- E3C9 A6 00 Ida a,0,x Clear the trigger, reload.- sampling » rate and start next 2.5 msec period
- E E33CCBB 9 977 9 988 notrig sta a.sam l E E33CCDD 9 966 0 088 Ida a.tcsr E E33CCFF 8 8AA 0 011 ora a,#l E E33DD11 9 977 0 088 sta a.tcsr E E33DD33 D DCC 0 099 ldd timer E E33DD55 C C33 0 000 00AA addd #10 E E33DD88 D DDD 0 0BB std ocomp ; The trigger line is forced high again, by the immediate ;compare reset for A/D trigger next time
- E3E2 F3 EO 04 addd msecper ; calculate the next ; compare time 10 E3E5 DD 0B std ocomp ; have setup next
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
Un électrocardiographe (2) possède des bornes d'entrée (32, 34, 36, 38, 40), un convertisseur analogique/numérique (62) permettant de convertir les signaux électriques appliqués auxdites bandes d'entrée (32, 34, 36, 38, 40) en signaux numériques, une mémoire (78) permettant de stocker les signaux numériques et un moyen d'affichage (6) permettant d'afficher graphiquement les signaux numériques.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU5556/86 | 1986-04-21 | ||
AUPH555686 | 1986-04-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0302865A4 EP0302865A4 (fr) | 1989-02-06 |
EP0302865A1 true EP0302865A1 (fr) | 1989-02-15 |
Family
ID=3771566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87902342A Withdrawn EP0302865A1 (fr) | 1986-04-21 | 1987-04-21 | Electrocardiographe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0302865A1 (fr) |
JP (1) | JPH01502087A (fr) |
WO (1) | WO1987006447A1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0346685B1 (fr) * | 1988-05-31 | 1994-04-20 | Sharp Kabushiki Kaisha | Un appareil ambulatoire d'électrocardiographie |
US4981141A (en) * | 1989-02-15 | 1991-01-01 | Jacob Segalowitz | Wireless electrocardiographic monitoring system |
US5168874A (en) * | 1989-02-15 | 1992-12-08 | Jacob Segalowitz | Wireless electrode structure for use in patient monitoring system |
JPH0817773B2 (ja) * | 1989-05-16 | 1996-02-28 | シャープ株式会社 | 心電図記録装置 |
IT1279943B1 (it) * | 1995-06-08 | 1997-12-23 | Castellini Spa | Sistema di monitoraggio e controllo di funzioni cardiache applicabile in apparecchiature dentistiche |
US5694941A (en) * | 1996-06-28 | 1997-12-09 | Siemens Medical Systems, Inc. | Physiological waveform delay indicator/controller |
FR2779633A1 (fr) * | 1998-06-12 | 1999-12-17 | Telecardia | Procede et dispositif d'enregistrement d'electrocardiogrammes |
US7558621B2 (en) * | 2004-01-16 | 2009-07-07 | Hewlett-Packard Development Company, L.P. | Synthesizing a reference value in an electrocardial waveform |
JP2006061494A (ja) * | 2004-08-27 | 2006-03-09 | Omron Healthcare Co Ltd | 携帯型心電計 |
CN101953686B (zh) | 2009-07-14 | 2012-11-07 | 周常安 | 手持式心电检测装置 |
CN105877738A (zh) * | 2015-01-09 | 2016-08-24 | 宁波高新区利威科技有限公司 | 一种生理参数监护系统信号放大器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142727A (en) * | 1983-06-21 | 1985-01-23 | Anthony John Turner | Ultra portable electrocardiograph |
EP0170448A2 (fr) * | 1984-07-13 | 1986-02-05 | Purdue Research Foundation | Appareil portatif de surveillance d'un électrocardiogramme |
FR2571603A1 (fr) * | 1984-10-11 | 1986-04-18 | Ascher Gilles | Enregistreur portatif d'electrocardiogrammes |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2351167C3 (de) * | 1973-10-11 | 1980-05-29 | Fritz Schwarzer Gmbh, 8000 Muenchen | EKG-Gerät |
GB1597355A (en) * | 1976-07-23 | 1981-09-09 | Anderson J | Display device |
DE2755643A1 (de) * | 1977-12-14 | 1979-06-21 | Zeiss Carl Fa | Verfahren und anordnung zur elektronischen langzeit-herzueberwachung |
US4360030A (en) * | 1980-01-23 | 1982-11-23 | Medtronic, Inc. | Apparatus for monitoring and storing a variety of heart activity signals |
US4483346A (en) * | 1983-08-25 | 1984-11-20 | Intech Systems Corp. | Electrocardiograph with digitally-printing waveform display |
US5012411A (en) * | 1985-07-23 | 1991-04-30 | Charles J. Policastro | Apparatus for monitoring, storing and transmitting detected physiological information |
-
1987
- 1987-04-21 WO PCT/AU1987/000109 patent/WO1987006447A1/fr not_active Application Discontinuation
- 1987-04-21 EP EP87902342A patent/EP0302865A1/fr not_active Withdrawn
- 1987-04-21 JP JP62502816A patent/JPH01502087A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142727A (en) * | 1983-06-21 | 1985-01-23 | Anthony John Turner | Ultra portable electrocardiograph |
EP0170448A2 (fr) * | 1984-07-13 | 1986-02-05 | Purdue Research Foundation | Appareil portatif de surveillance d'un électrocardiogramme |
FR2571603A1 (fr) * | 1984-10-11 | 1986-04-18 | Ascher Gilles | Enregistreur portatif d'electrocardiogrammes |
Non-Patent Citations (1)
Title |
---|
See also references of WO8706447A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH01502087A (ja) | 1989-07-27 |
WO1987006447A1 (fr) | 1987-11-05 |
EP0302865A4 (fr) | 1989-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3817163B2 (ja) | 携帯型生体データ測定装置 | |
EP0302865A1 (fr) | Electrocardiographe | |
US5300093A (en) | Apparatus and method for measuring, formatting and transmitting combined intracardiac impedance data and electrograms | |
US5876351A (en) | Portable modular diagnostic medical device | |
US5002064A (en) | Portable life detection monitor including lead fail detector and unique signal processing system | |
US8260405B2 (en) | Monitoring apparatus for monitoring a user's heart rate and/or heart rate variation; wristwatch comprising such a monitoring apparatus | |
JP3388757B2 (ja) | 麻酔深度を測定するための装置 | |
US9326692B2 (en) | Blood pressure measurement device and blood pressure measurement method | |
JPH02226073A (ja) | 2個の情報信号に含まれる情報の表示を相関させる方法および装置 | |
EP1965697A2 (fr) | Appareil destiné à surveiller la fréquence cardiaque et/ou une variation de fréquence cardiaque d'une personne, et montre-bracelet comprenant cet appareil | |
EP1379167A1 (fr) | Systeme de surveillance physiologique destine a un dispositif informatique d'un sujet humain | |
JPH06500932A (ja) | 神経筋遮断をモニターするための方法及び装置 | |
US5123419A (en) | Combined pacemaker parameter and vital sign monitor and method of display | |
WO2019057004A1 (fr) | Procédé de traitement et d'affichage de signal d'électrocardiographie intracavité et stimulateur cardiaque temporaire avec cette fonction | |
WO2001075766A1 (fr) | Ordinateur personel equipe des fonctions d"analyse de composition corporelle, d"electrocardiogramme et de mesure du poux | |
JP4949575B2 (ja) | 生理学的イベント検出器及びその動作プログラム | |
GB2362216A (en) | Heart monitoring apparatus having low power and main memory devices | |
US6129677A (en) | Non-invasive heart monitoring apparatus and method | |
GB2089999A (en) | Non-invasive haemodynamic performance assessment | |
KR20190052636A (ko) | 호흡 모니터링 시스템 | |
CN104188651B (zh) | 心电监测装置及其控制方法 | |
JP3036954U (ja) | 携帯用心拍間隔記録装置 | |
EP0748611B1 (fr) | Appareil dentaire avec un dispositif de surveillance de la fonction cardiaque | |
JPH0325175B2 (fr) | ||
RU2190983C1 (ru) | Способ оценки состояния сенсорно-моторной и осязательной функции опорно-удерживающего аппарата зуба и устройство для его осуществления |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19881024 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19890206 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19911105 |