Retinal prosthesis, implant device and flexible cable

Abstract

The invention discloses a flexible cable of a retinal prosthesis, which comprises a microelectrode, a plurality of stimulation electrodes, an abutting piece, a leading-in part and a connecting part, wherein the microelectrode is provided with a first mounting hole and an electrode region;the stimulation electrodes are arranged in the electrode region, and the end parts of the stimulation electrodes are exposed on one side surface of the microelectrode; the abutting piece is provided with a second mounting hole corresponding to the first mounting hole and extends to the back surfaces of the stimulation electrodes from the second mounting hole; the abutting piece is arranged on the other side surface of the microelectrode; force distribution obtained at the second mounting hole is transmitted to the back surfaces of the stimulation electrodes through elastic force generated by elastic denaturation, so that the electrodes are uniformly stressed, a better sticking effect is achieved, and the phenomena of inclination and warping of the electrodes caused by uneven stress are avoided.According to the flexible cable, the microelectrode can be uniformly stressed and can be better attached to the retina so as to obtain a more effective stimulation effect.The invention further discloses a retinal implant device and the retinal prosthesis.

Description

technical field [0001] The invention relates to the technical field of ophthalmic nerve stimulators, in particular to a flexible cable of a retinal prosthesis, an implantation device with the same, and a retinal prosthesis with the implantation device. Background technique [0002] In the related art, when the retinal prosthesis implantation device is implanted, usually only one retinal pin is implanted, so that there is only one fixed force point on the microelectrode, which easily causes the other side opposite to the retinal pin to warp Or uneven force, which in turn leads to a larger distance between some of the stimulating electrodes on the microelectrode and the retinal surface, and ultimately requires a greater intensity of stimulating current to produce a better visual perception effect. [0003] However, since the number of stimulating electrodes in a microelectrode is generally tens, hundreds or even thousands, if a large proportion of the stimulating electrodes re...

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Problems solved by technology

[0002] In the related art, when the retinal prosthesis implantation device is implanted, usually only one retinal pin is implanted, so that there is only one fixed force point on the microelectrode, which easily causes the other side opposite to the retinal pin to warp Or the force is uneven, which leads to a larger distance between the stimulating electrodes on the microelectrodes and the retinal surface, and finally leads to the need for a larger stimulating current to produce better visual perception effects

[0003] Since the number of stimulating electrodes in the microelectrode is generally dozens, hundreds or even thousands, if a large proportion of the stimulating electrodes requires a large stimulating current, the total stimulating current will increase, which not only consumes electric energy, Reduced battery life and, in severe cases, nerve damage or seizures

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