| 摘要 |
<p>A tube sealer (8) is provided for limiting radio frequency emissions during operation. The tube sealer (8) includes an enclosure such as a cabinet (10) and first and second jaws (42, 26) oriented with respect to the enclosure to receive a tube portion in a space therebetween. The first jaw (42) is fixed and is coupled to a radio frequency generator, and the second jaw (26) is movable with respect to the first jaw (42) and coupled to ground potential. The tube sealer (8) also includes a shield (12) positioned adjacent the enclosure and configured to at least partially enclose the first and second jaws (42, 26) yet permit the introduction of a tube portion to a position between the first and second jaws (42, 26). The shield (12) thereby reduces radio frequency emanations from the first and second jaws (42, 26), and the shield (12) is movable with respect to the enclosure to at least partially expose the first and second jaws (42, 26).</p> |
