| 摘要 |
A microwave applicator having a probe which comprises an elongate shaft (14), the shaft having an external tubular wall (18), a radiating portion (15) disposed at the distal end of the shaft (14). a transmission line (17) extending to the radiating portion internally of the tubular external wall (18), and an elongate flow dividing member (19) which co-extends with the transmission line (17) longitudinally of the shaft (14), the side wall of the transmission line (17) and the side wall of the flow dividing member (19) contacting each other and contacting the internal surface of the external tubular wall (18) at two-spatially separated discrete positions, thereby defining a pair of flow channels (20, 21) inside the shaft (14). In use, cooling fluid, can pass down one channel (20) and return via the other channel (21). The structure of the probe is uncomplicated and the probe is straightforward to assemble. |
| 主权项 |
1. A microwave applicator comprising:
an elongated shaft having a proximal end and a distal end, the shaft having an external tubular wall; a microwave radiating portion near a distal end of the shaft; a flow dividing member comprising a transmission line, the transmission line comprising an elongate central conductor, a dielectric sleeve, and an outer copper sleeve, the transmission line extending to the microwave radiating portion and extending longitudinally along the shaft, a first side of the transmission line contacting an internal surface of the external tubular wall and a second side of the transmission line contacting the internal surface of the external tubular wall to define a first flow passage and a second flow passage, the first flow passage and the second flow passage extending longitudinally along the shaft. |
