Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Active Interfering Noise Cancellation Device and Related Method

A technology of active noise and equipment, applied in medical science, guide wires, sensors, etc., can solve problems such as limited shielding and damage, and achieve the effect of reducing leakage current

Inactive Publication Date: 2017-06-13
圣朱迪医疗合作中心公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shielding provided is very limited and largely ineffective at low frequencies (<10kHz)
This makes sensor measurements vulnerable to corruption from 50 / 60Hz line voltage interference

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
  • Active Interfering Noise Cancellation Device and Related Method
  • Active Interfering Noise Cancellation Device and Related Method
  • Active Interfering Noise Cancellation Device and Related Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Before turning to the drawings, which illustrate the exemplary embodiments in detail, it is to be understood that the application is not to be limited to the details or instrumentalities set forth in the description or shown in the drawings. It should also be understood that the terminology is for the purpose of description only and should not be regarded as limiting.

[0045] In one embodiment, an active noise cancellation device 2 for a medical device comprises an active circuit having a first input connection 8, a second input connection 10 and an output connection 12; adapted to communicate with a subject A low-impedance body connection electrode 4 in electrical contact with blood flow (eg of a human or animal body) and a feedback branch 14 connecting said output connection 12 with said first input connection 8 .

[0046] refer to Figure 5 , the basic principle of one embodiment of the active noise cancellation device is that the current limiting circuit 18 feeds ...

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

An active noise cancellation device (2) for medical equipment comprises an active circuit having a first input connection (8), a second input connection (10) and an output connection (12). The second input connection (10) is connected to at least one predetermined reference signal. The active noise canceling device (2) further comprises a low-impedance body-connected electrode (4) adapted to be in electrical contact with the subject's blood flow, wherein the low-impedance body-connected electrode (4) is connected to said first input connection (8), and a feedback branch (14) connects the output connection (12) with the first input connection (8). The feedback branch (14) includes a current limiting circuit (18) for limiting the current through said feedback branch (14) to below a predetermined current.

Description

[0001] Cross references to related patent applications [0002] This application claims priority to US Provisional Application No. 61 / 630,097, filed December 5, 2011, which is incorporated herein by reference in its entirety. Background technique [0003] The present invention relates to devices and methods for active noise cancellation applicable to medical intra-body sensors. [0004] During many medical procedures, various physiological conditions present in body cavities need to be monitored. These physiological conditions are usually physical properties - such as pressure, temperature, fluid flow rate, and provide the physician or medical technician with key information about the status of the patient's physiological condition. [0005] One device that is widely used to monitor physiological conditions is a blood pressure sensor. The blood pressure sensor senses the magnitude of the patient's blood pressure and converts it into a typical electrical signal transmitted to...

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
Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0215A61M25/09A61B5/00
CPCA61B5/6851A61B5/7203A61B5/01A61B5/0215A61B5/026A61B5/065A61B5/14539A61M25/09H03H11/12
Inventor 芒努斯·萨穆埃尔松
Owner 圣朱迪医疗合作中心公司
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com