| 摘要 |
<p>Disclosed is a catheter and moveable needle system (15', 15') which places one or more fiber optic elements (23', 23') and thermo-measuring devices (24) through a body passageway wall and into the bulk of an adjacent organ (43). The catheter is positioned adjacent to the organ and the needles are extended to mechanically puncture the wall and move into the organ with the fiber optic elements. The needle may be withdrawn into the catheter before delivery of laser energy or remain in the organ to serve as an aspiration-irrigation vehicle. Lumens (16) provided in the catheter for carrying the hollow needles may likewise be used for aspiration or irrigation of the passageway. A dilation balloon (19, 20) may be provided in order to temporarily fix and support the catheter while the needle is inserted into the organ. The temperature of the area being treated is monitored by thermomeasuring devices provided on the fiber optic elements. Small puncture holes created by the hollow needles heal quickly and minimize risk of infection.</p> |
