Laser welding method of electrode collar in artificial cochlea and platiniridium wire

Abstract

The invention relates to a method for welding electrode retaining collars and platinum iridium wires in artificial cochleas by laser, which is realized by the following steps: integrally fixing a tool on a worktable of laser welding, putting an electrode ring into a positioning hole of a positioning plate of the electrode retaining collar, threading the platinum iridium wire through the center of the electrode ring, adjusting an upper plate of the welding tool, and fixing an adjusting slide block to make the angle between the upper plate of the welding tool and the base plate of the welding tool fixed; making laser weld the electrode ring together with the platinum iridium wire at a proper angle of incidence; adopting the laser of YAG series for laser spot welding; and putting the remained positioning holes on the positioning plate of the electrode retaining collar into the electrode ring, sequentially threading the platinum iridium wires through the electrode ring, controlling the level rectilinear movement of a laser worktable to ensure the laser aims at welding points of each electrode ring and platinum iridium wire, and finishing the welding sequentially. In the invention, the method has the advantages of small welding spots without post treatment, no damage to the coatings of the platinum iridium wire in the non-welding position when welding, fast welding, no other impurities pollution of weld spots, and high welding fastness.

Description

Technical field [0001] The invention relates to a cochlear implant, in particular to a method for welding an electrode ring and platinum iridium wire in the artificial cochlea. Background technique [0002] The cochlear implant device consists of two parts: a speech processor (external device) and a cochlear implant device. In the entire cochlear implant device, the cochlear implant device is the most critical part. Since the electrode directly stimulates the auditory nerve, the welding quality of the electrode ring and the platinum-iridium wire directly affects the product quality of the implant device. [0003] However, due to the small size of the electrode ring, the platinum-iridium wire is also very thin, and the surface of the platinum-iridium wire has an insulating coating, the conventional welding method cannot well complete the welding of the platinum-gold electrode ring and the platinum-iridium wire. Summary of the invention [0004] The technical problem to be solved by ...

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Problems solved by technology

[0003] However, due to the small size of the electrode ring, the platinum iridium wire is also very thin, and the surface of the platinum iridium wire has an insulating coating, the conventional welding method cannot complete the welding of the platinum electrode ring and the platinum iridium wire well.

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