| 摘要 |
<p>A voice prosthesis device (20) provides a passageway (36) between a tracheal end (24) of the device and an esophageal end (26) of the device (20). A valve in the passageway (36) includes a seat (54) having a first hardness and a movable valve member (52) having a second hardness harder than the first hardness. The movable valve member (52) closes against the seat (54) to close the valve.</p> |
