title: A better hearing aid? Open-fit models don't block the ear canal, so some people find them more comfortable.
mesh_terms: D000162:Acoustics; D006310:Hearing Aids / Q000009:adverse effects / Q000592:standards* / Q000600:supply & distribution; D034381:Hearing Loss / Q000534:rehabilitation; D006801:Humans; D011474:Prosthesis Design