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Multifunctional nano-composite sensor, sensing system, method for monitoring patient cardiovascular system and polymer composition

A nano-composite, sensor technology, applied in the direction of sensors, applications, telemetry patient monitoring, etc., can solve problems such as discomfort and user pain

Inactive Publication Date: 2015-05-20
CLEVELAND MEDICAL POLYMERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To ensure constant contact, this assembly requires piercing the skin for biopotential signals, which causes pain and discomfort for the user

Method used

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  • Multifunctional nano-composite sensor, sensing system, method for monitoring patient cardiovascular system and polymer composition
  • Multifunctional nano-composite sensor, sensing system, method for monitoring patient cardiovascular system and polymer composition
  • Multifunctional nano-composite sensor, sensing system, method for monitoring patient cardiovascular system and polymer composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0054] The above-mentioned nanocomposite can be prepared using a co-rotating twin-screw extruder, especially a 25 mm diameter (D) twin-screw extruder from Berstorff, GmbH. The components of the formulation are supplied according to two schemes: (i) all components are delivered from the inlet of the extruder with a delivery length of 44D; (ii) the conductive filler is only fed from the side-feeder, the other Components are fed from the inlet. The system is usually vacuum degassed. A twin-screw extruder can advantageously be used for processing the above-defined nanocomposites. The pellets were collected by running the strands of a strand-pelletizer. Other melt blending / mixing techniques such as single screw extruders and banbury mixers can also be used.

[0055] Test Methods

[0056] The volume resistivity of the molded samples was measured by direct current (DC) resistance along a length of about 40 mm at room temperature. Convert resistivity to volume resistivity ρ v ,...

Embodiment

[0069] In this series of experiments, polymer components for the fabrication of sensor materials for monitoring biological signals are prepared and evaluated. The individual component materials that are used to prepare the polymer composition are determined as shown in Table 2 below:

[0070] Table 2 Description of material composition used

[0071]

[0072]

[0073] Tables 3-8 list the resin compositions (Experiments 1-28). The compositions are made by, but not limited to, combining the listed materials in the following manner. In this series of experiments, two raw materials were first mixed together and then extruded with a third raw material. For example, the carbon black component is made first and then the carbon nanotubes are added in a second extrusion step. In this series of experiments, various modifications were made in the production process and combination order to prepare the series of compositions.

[0074] Usually, in this process, the composition use...

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Abstract

The invention relates to a multifunctional nano-composite sensor, a sensing system, a method for monitoring a patient cardiovascular system and a polymer composition. The sensing system comprises a polymer nano-composite sensor material (1), a device (2) used for manufacturing the sensor material to be in a needed shape or in a needed mode, and a signal capture interface (3) used for collecting, transmitting and processing signals. The multifunctional nano-composite sensor comprises the polymer composition with an electric lead embedded in the multifunctional nano-composite sensor. The polymer composition is provided with a dispersion phase and a dispersed phase, the dispersion phase is free of gel and contains a thermoplastic polymer or a thermosetting polymer, the dispersed phase comprises conductive filler, and the electric lead is suitable for transmitting electric signals to a signal processing device. The sensor can capture ECG signals with high quality, any skin set-up procedure is needless, and related skin stimulation caused by the skin set-up procedure is avoided. The sensing system can be integrated to a user environment easily and used for various transparent user sensing application programs.

Description

technical field [0001] The present invention relates to a multifunctional nanocomposite sensor, a sensing system, a method for monitoring a patient's cardiovascular system over a long period of time, and a polymer composition. Background technique [0002] The use of electrodes to sense and measure biopotential signals has been used as part of various diagnostic tools (such as electrocardiography (ECG / EKG) to monitor heart function and electroencephalography (EEG) to study brain activity etc.) are widely practiced in the medical field. Previous related art used metal electrodes that were brought into contact with its ionic form by a gel-bound electrolyte that then came into contact with the skin. A commonly used system of this type is a "wet" electrode, typically an Ag / AgCl electrode. Such systems have been documented to have a number of disadvantages, such as the need for skin preparation, including shaving hair and scrubbing to remove the stratum corneum. Also, wet elec...

Claims

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Application Information

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IPC IPC(8): A61B5/0408
CPCA61B5/0006A61B5/6804A61B5/6887A61B5/6891A61B5/25
Inventor P·塔拉尼克尔A·范卡特森N·尼甘德希A·班纳杰
Owner CLEVELAND MEDICAL POLYMERS
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