Flexible variable-resistance array tactile sensor based on microfluid electrons

Abstract

The invention belongs to the field of medical instruments and discloses a flexible variable-resistance array tactile sensor based on microfluid electrons. Any array unit comprises a U-shaped microchannel (1) and microfluid electrons (2) arranged in a U-shaped hollow structure of the U-shaped microchannel in a sealed mode, and the microfluid electrons (2) jointly form a protrusion (4) and serve asa resistance sensing unit to be arranged on a substrate (5). Except the microfluid electronic part, the bulges are made of a silicon rubber material, when force interaction exists between the bulges and the to-be-measured object, the resistance corresponding to the microfluid electrons in the U-shaped microchannel changes, and therefore the bulges can sense the elasticity modulus of the to-be-measured object. By improving the internal composition and structure of the device and the setting mode of each structure, when the device is deformed due to pressure during touch, the sectional area of the microfluid sensing unit is greatly reduced, so that the resistance value is greatly increased, high-precision real-time measurement of tactile force can be realized, and the sensor has higher sensitivity.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to a compliant variable resistance array tactile sensor based on microfluidic electronics, which can be used for medical palpation. Background technique [0002] In medicine, palpation refers to the application of touch in medical diagnosis, and is an important means of detecting diseases. Doctors use palms or fingers to touch the patient's organs or tissues to understand the patient's physical condition and help diagnose the patient's condition. In many cases, palpation is important as an initial examination of patients, including for cancers such as breast and prostate, because it is low cost and minimally invasive. [0003] However, during palpation, due to factors such as tissue anisotropy, wrong perception techniques, and limitations of tactile perception, doctors can easily miss nodules and masses, which in turn leads to misdiagnosis. It is also worth...

AI Technical Summary

Problems solved by technology

Many sensor sensing units involved in tactile imaging are hard or the sensing units are usually distributed on a hard substrate, so they cannot be applied to tissues with different hardness or softness, nor can they fit the skin surface with high curvature

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