Bio-electricity signal detection circuit, lead wire detection circuit and medical device

A detection circuit and lead wire technology, which is applied in the direction of bioelectrical signal measurement, voltage-only measurement, and components of electrical measuring instruments, etc. Problems such as design difficulty and cost, to achieve the effect of simple circuit structure

Inactive Publication Date: 2013-10-30
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution increases the burden on the analog-to-digital converter, requires a higher sampling

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bio-electricity signal detection circuit, lead wire detection circuit and medical device
  • Bio-electricity signal detection circuit, lead wire detection circuit and medical device
  • Bio-electricity signal detection circuit, lead wire detection circuit and medical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Please refer to figure 1 , a bioelectrical signal detection circuit, including a lead wire 11 for normal testing, a bias circuit 12 and a lead wire detection circuit 10, and the lead wire detection circuit 10 includes a reference level generator 13, a comparator 14 and a control logic module , the control logic module is used to realize the logic judgment function, which can be realized by devices such as LogicGates (logic gate), MCU (microcontroller), and FPGA (field programmable gate array). In this embodiment, the control logic module includes the microprocessor 15 as an example for illustration.

[0027] The lead wire 11 includes a contact end 111 and a signal output end 112 for contacting the human body. When collecting human tissue signals, the contact end 111 is clamped or pasted into contact with the human body, and the human biological body collected through the lead wire 11 The electrical signal is output through the signal output terminal 112 . The bias cir...

Embodiment 2

[0043] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 lies in the sharing of comparators. The bioelectrical signal detection circuit includes a lead wire 21, a bias circuit 22 and a lead detection circuit 20, and the lead detection circuit includes a reference level generator 23, a comparator 24, a microprocessor 25 and a multi-way switch 27. The setting circuit 22 forms a loop through the lead wire 21 and the reference lead wire 26, and the signal output end of each lead wire 21 is connected to one of the multiple input terminals of the multi-way switch 27, and the output end of the multi-way switch 27 is connected to To one of the two input terminals of the comparator 24, the multi-way switch 27 polls the signal output terminals of each lead wire, and the other input terminal of the comparator 24 is connected with the reference level generator 23, and accesses the reference voltage The output end of the comparator 24 is connected to the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A bioelectrical signal detection circuit, lead detection circuit (10) and medical apparatus, the lead wire detection circuit (10) comprising a reference power level generator (13), comparators (14), and a control logic module; the input ends of the comparators (14) are respectively coupled to the output end of the reference power level generator (13) and the signal output end of the lead wire; the comparators are respectively used to input a reference power level signal and a lead signal, compare the lead signal with the reference power level signal, and transform the output power level of the output end based on the comparison result; the input end of the control logic module is coupled to the output end of the comparator; and the control logic module determines the attachment or detachment state of the lead according to the acquired power level state of the comparator output end. The comparator and the control logic module are adopted to detect lead detachment, thus having a structurally simple circuit, and low cost, and facilitating chip integration.

Description

technical field [0001] The invention relates to a lead line detection circuit and medical equipment including the lead line detection circuit. Background technique [0002] The physiological activities of certain tissues of the human body (such as the heart and brain) can be reflected by bioelectric waves, and the ECG / EEG can be detected by connecting the lead wire to the chest / brain, and the detected ECG / EEG can be drawn into ECG / EEG can assist doctors in judging tissue lesions. Poor contact or shedding of the lead wires (collectively referred to as shedding) may occur during the lead wire detection process, resulting in detection failure. The existing lead wire drop detection technology usually uses a constant current source to bias the lead wire, or forms a bias circuit to bias the lead wire through a voltage source through a resistance of the order of mega-ohms, and the bias current passes through the reference wire. Lines form a loop. Taking ECG detection as an examp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/0428A61B5/0402A61B5/0476A61B5/308
CPCA61B5/04A61B5/30A61B5/24A61B5/369G01R1/067G01R15/00G01R19/0084
Inventor 岑建刘启翎王兵伍晓宇
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap