Retinal prosthesis, implanting device and flexible cable

Abstract

The invention discloses a flexible cable for a retinal prosthesis. The flexible cable comprises a microelectrode with two mounting holes corresponding to two sides of the optic disc during implantingof the retina, wherein the microelectrode comprises an electrode area located between the two mounting holes and an elastic portion connected to the electrode area, the elastic portion is deformable and stretchable at least in a longitudinal direction of a connection line of the two mounting holes, and the electrode area is provided with a plurality of stimulation electrodes; a leading portion connected with an electronic device; a connection portion connected between the microelectrode and the leading portion and including a plurality of wires respectively connected to the plurality of stimulation electrodes. The flexible cable enables the microelectrode to be uniformly stressed and better attached to the retina to obtain a more effective stimulating effect. The invention also discloses an implanting device for the retina 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, a retinal implantation device with the same, and a retinal prosthesis with the implantation device. Background technique [0002] In the related art, when the implantation device of the retinal prosthesis is implanted, usually only one retinal pin is implanted, so that there is only one fixed stress point on the microelectrode with a planar structure, which easily leads to another retinal pin opposite to the retinal pin. Side tilting or uneven force will lead to a larger distance between some stimulating electrodes on the microelectrodes and the retinal surface, and ultimately require a higher intensity stimulating current to produce better visual perception effects. [0003] However, since the number of stimulating electrodes in a microelectrode is generally tens, hundreds or even thousands, if a large proportion of ...

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Problems solved by technology

[0002] In the related art, when the implantation device of the retinal prosthesis is implanted, usually only one retinal pin is implanted, so that there is only one fixed force point on the microelectrode with a planar structure, which easily leads to another retinal pin opposite. The side is tilted or the force is uneven, which leads to a large distance between some stimulating electrodes on the microelectrode and the retinal surface, and finally requires a large-intensity stimulating current to produce a better visual perception effect

[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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