Flexible Electrodes, Implantable Devices, and Implantable Retinal Electrostimulators

Abstract

The invention discloses a flexible electrode, an implant device and an implanted retinal electric stimulator. The flexible electrode includes: an introduction part, a cable and a stimulating part, the stimulating part is formed with a fixing hole for implanting a fixation nail, the cable is formed with a first bending edge, and the first bending edge is formed from the flexible The inner upper quadrant of the electrode is inclined to the outer lower quadrant, so that the position of the fixing hole moves downward after implantation, and the first bending edge is located inside the eyeball during implantation. Therefore, by setting the first bending edge, the position of the fixing hole is moved down, so that the fixing nail can be adjusted to a proper position, and the interference between the nail tip of the fixing nail and the back of the electronic package can be avoided. The present invention can also set the second bending edge, which can make the stimulating part assume a horizontal posture after implantation, optimize the visual field of blind patients, improve the matching degree of the stimulating part and the image collected by the external camera, and then enable the patient to obtain better Electrical stimulation of visual perception effects.

Description

technical field [0001] The invention relates to the technical field of ophthalmic nerve stimulators, in particular to a flexible electrode, an implant device and an implanted retinal electric stimulator. Background technique [0002] The retinal electrical stimulator uses artificial retinal implantation technology, which bypasses the patient's degenerated photoreceptor cells and electrically stimulates relatively intact ganglion cells and bipolar cells. It is mainly suitable for patients with retinitis pigmentosa (RP) ) and age-related macular degeneration (Age-related Macular Degeneration, referred to as AMD) and blind patients. [0003] An implantable device for a retinal electrical stimulator includes an electronics package and flexible electrodes extending from the electronics package. In order to ensure a better stimulation effect, the electrode array is generally covered on the macular area of ​​the retinal surface; in addition, the flexible electrode generally has a ...

AI Technical Summary

Problems solved by technology

In order to ensure a better stimulation effect, the electrode array is generally covered on the macular area of ​​the retinal surface; in addition, the flexible electrode generally has a certain width, which can be freely curled in the length direction, but the degree of rotation in the circumferential direction with the length direction as the axis Limited, restricting its fixed position and posture on the retinal surface

However, since the electronic packaging body needs to occupy a certain area outside the sclera, if the surgeon does not adjust the fixing position of the fixing nail properly, it will cause the protruding nail tip of the fixing nail to interfere with the back of the electronic packaging body, which will lead to an unsmooth operation. to implant

[0004] In addition, the electrode array in the prior art usually has a certain inclination angle after implantation, and the matching degree with the images collected by the external camera is not high, resulting in a small field of vision for the patient to obtain visual perception

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