| 摘要 |
The invention relates to a tissue access system for application in tissue ablation without an open operation, with a distally open, tube-like, hollow organ (4), with a proximally-mounted handle piece (6), which has a through channel (7), axially aligned with the hollow organ and an infusion connector piece (9), which opens into the through channel, for introduction of a liquid or gaseous medium. An energy conductor (16), for example a laser light guide, or a catheter for the same, is arranged in the hollow organ and fixed in a sealing manner with regard to the exterior, by a seal (8) provided in the through channel. The energy-releasing zone of the energy guide is located in an energy-transparent region of the hollow organ. A medium, introduced into the annular flow channel between the energy guide or catheter and the hollow organ, serves as coolant for the energy-releasing zone of the energy guide and as heat transport medium in the tissue and can also function as an ablation agent and as contrast agent for inspection by means of an imaging technique. Said tissue access system is highly effective with minimal effect on the patient, is of simple construction and easily manipulated and permits a control of tissue treatment by means of an imaging technique.
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