Multi-kinetic energy tactile sensor and measuring method

Abstract

The invention discloses a multi-kinetic energy tactile sensor and a measuring method. The multi-kinetic energy tactile sensor is composed of a hardness detecting unit, a voltage-sensitive varistor sheet, a rubber pipe and a connector. The hardness detection unit is intended for detecting the hardness of a tissue which is in contact with the end of an instrument. The voltage-sensitive varistor sheet is intended for detecting the contact force when the end of the instrument and side wall is in contact with an tissue or blood vessel. Compared with prior art, according to the invention, the multi-kinetic energy tactile sensor is advantaged by capability of detecting tissue hardness, and the contact force of the end of the instrument and the side wall, having simple structure, being beneficial to minimization, being free from contact force upon detecting hardness, and being applied to hardness measurement of biological tissues. The tactile sensor can provide safety in the field of interventional operation, provide key information for disease diagnosis of biological tissues, and can facilitate the development in the field of interventional operation.

Description

technical field [0001] The invention relates to a multifunctional tactile sensor and a measuring method, in particular to a sensor and a measuring method for measuring the hardness of biological tissue and measuring the contact force of the end and side wall of an interventional surgical instrument. Background technique [0002] In recent years, due to unhealthy eating and living habits, greater life and work pressure, aging population and other reasons, there are more and more patients with cardiovascular diseases such as hypertension, dyslipidemia, coronary heart disease, and the disability rate caused by cardiovascular diseases and death rates are increasing year by year. Minimally invasive interventional surgery has been widely used in the diagnosis and treatment of cardiovascular and cerebrovascular diseases due to its advantages of less bleeding, less trauma, less pain and faster postoperative recovery. [0003] The operation of interventional surgical instruments has...

AI Technical Summary

Problems solved by technology

The spring damping module is introduced, combined with piezoelectric ceramics to reduce the resonance frequency of the entire mechanical system, and the hardness information of the object is obtained by measuring the change in the resonance frequency of the entire mechanical system when it touches the object, which avoids the problems caused by the high resonance frequency of piezoelectric ceramics, and can It is well applied to biological tissues, but its complex structure is not conducive to miniaturization and cannot be applied in interventional surgery

[0005] Based on the current research status of tactile sensors, although the current tactile sensors already have the function of contact force measurement or hardness measurement, most of the tactile sensors are complex in structure and difficult to miniaturize. It cannot be applied to occasions with strict requirements such as interventional surgery, which limits the development of advanced technologies such as interventional surgery.

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