Current cochlear implant technologies require an externally placed battery and sound processor. These delicate parts must be kept safe from damage - from contact, water, static and magnetic environments. These external components and the high cost of the cochlear implant are the two main reasons why 98% of those who need the technology are going without. 18% choose not to undergo cochlear implant surgery due to the lifestyle limitations of the external components. While its in emerging economies that the cost is simply too high to be accessible, leaving 80% without treatment. So while the technology has transformed the lives of over 350,000 profoundly deaf cochlear implant wearers worldwide, there's still a long way to go to make this treatment work for all profoundly deaf patients. Hemideina will remove these lifestyle restrictions, and aim to produce a lower cost cochlear implant by developing a fully internalised, 2-component cochlear implant.