| 摘要 |
<p>Prophylactic structure or an earphone cover (10, 110) for attachment to an operative region (14a, 15) of an audiometric testing device (14) includes a body (12, 112) formed from a substantially anti-viral, acoustically-transparent material, and is constructed for covering such region (14a, 15). The body is preferably formed as a polyethylene film with a thickness of about 1-mil. Anti-viral testing shows that the earphone cover (10, 110) is an effective barrier throughout a 60-minute exposure time to a viral organism described as X174 bacteriophage ATCC#13706-B1. Acoustic transparency testing shows the earphone cover (10, 110) exhibits acceptable percentage total harmonic distortion and attenuation. A method of preventing patient cross-contamination associated with audiometric testing is also described. Both the structure and method are usable without affecting calibration of the audiometric testing device (14).</p> |
