A square measurement box with adjustable capacity for measuring the dielectric properties of isolated biological soft tissue

Abstract

The invention discloses a volume-adjustable square measuring box for measuring the dielectric properties of in-vitro biological soft tissues. The measuring box comprises a measuring box body and volume adjusting devices, which are arranged on the lower surface and two sides of the measuring box body. The bottom, left side, and right side of the measuring box body are not provided with a box wall. The top wall of the measuring box body is provided with multiple strip electrodes that can be embedded into the measuring box body. The front wall and rear wall of the measuring box body are symmetrically provided with a plurality of grooves and strip plugs that can be inserted into the grooves and used to lock the adjusting device. A proper embedded electrode of the device can be chosen and connected to a resistance measuring instrument according to the needs to measure the dielectric characteristics of in-vitro biological soft tissues. The device is in a square shape, thus the tissues to be measured can be conveniently trimmed by an operator, the shape of the tissues can be well controlled, the dielectric properties of the tissues can be precisely measured, moreover, the volume is adjustable, and thus the box can be used to measure small soft tissues.

Description

technical field [0001] The invention belongs to the technical field of measuring the dielectric properties of biological tissues, and in particular relates to a capacity-adjustable square measurement box for measuring the dielectric properties of isolated biological soft tissues. Background technique [0002] The dielectric properties of biological tissue refer to the storage and loss characteristics of electromagnetic energy in biological tissue under the action of electromagnetic field, which are usually characterized by electrical conductivity σ and relative permittivity ε. Relative permittivity ε reflects the ability of biological tissue to store electromagnetic energy, while electrical conductivity σ reflects the loss of biological tissue to electromagnetic energy during conduction. The dielectric properties of biological tissue can reflect its microstructure. Different biological tissues have different dielectric properties, and the same biological tissue has different...

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Problems solved by technology

In actual operation, it is difficult to cut the soft tissue into a cylindrical shape. The method of multiple cutting and filling will destroy the physical shape of the soft tissue and affect the accuracy of the measurement results. Moreover, this type of measurement device is limited by the structure. On the one hand, it is easy to operate. Not too small, if the target tissue volume is small, you have to fill other tissues or use multiple filling methods to fill the measurement box to ensure sufficient contact with the electrodes, so that the measurement results will also deviate from the true value of soft tissue, Therefore, there is a need for an easy-to-operate, small-capacity and adjustable measuring device that can preserve the original shape of the soft tissue as much as possible for the measurement of the dielectric properties of the isolated biological soft tissue.

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