Signal generating device and apparatus with same

Abstract

The invention belongs to the field of biomedical engineering and provides a signal generating device and an apparatus with the same. The signal generating device comprises a pulse signal parameter input interface, a pulse signal generating unit, a unipolar and bipolar signal switching unit, and a constant-current source; the pulse signal parameter input interface is used for receiving pulse signalparameters inputted by the outside; the pulse signal generating unit is used for generating pulse signals and a constant-current control voltage according to the pulse signal parameters; the unipolarand bipolar signal switching unit is used for generating unipolar or bipolar signals according to the pulse signals and outputting the unipolar or bipolar signals; and the constant-current source isused for controlling the magnitude of the output current of the unipolar and bipolar signal switching unit according to the constant current control voltage. The signal generating device can output higher-frequency electrical stimulation signals of which the polarity can change alternately, and therefore, electric charge neutralization is realized, a stimulation threshold value is reduced, the unipolar or bipolar signals can further deeply act on a visual system and induce visual cortex to respond, and burn caused by long-time use is avoided. The whole device is safer. A user can acquire better use experience.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering, and in particular relates to a signal generating device and equipment with the signal generating device. Background technique [0002] About 90% of the information that human beings know about the external world is provided by vision. Normal and complete vision is produced in this way: the optical system of the eye images the external objects on the retina, and the photoreceptor cells on the retina convert the image signal into bioelectricity. The signal is then preliminarily processed by the cellular neural network and then transmitted to the visual cortex by the visual nerve fibers. The visual cortex of the brain reprocesses the obtained bioelectrical signal and perceives it to produce vision. Damage or disease in any link of the visual pathway can lead to serious visual problems, such as: retinitis pigmentosa, macular degeneration, low vision, severe amblyopia, etc. [0003] St...

AI Technical Summary

Problems solved by technology

However, the electrical stimulation signal generating equipment of the existing implantable scheme mainly outputs low-frequency single-polarity electrical stimulation, which is subject to many restrictive factors, and there are many problems such as electrical burns, and it will take a long time to enter clinical application.

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