摘要:
A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.
摘要:
An electrosurgical system comprising: an electrosurgical energy source ; a feedline including an inner conductor, an outer conductor coaxially-disposed about the inner conductor, and a dielectric material ; a probe operably coupled to the electrosurgical energy source including an antenna assembly having a radiating portion and defining a coolant chamber about the antenna assembly; a shaft coupled in fluid communication with the coolant chamber, the shaft adapted to remove heat along the length of the feedline, characterized in that the shaft includes: an inlet sleeve; an outlet sleeve; an inner tubular member coaxially disposed about and slideably coupled to the inlet sleeve, the inner tubular member disposed around a portion of the feedline to define a fluid inflow conduit between the inner tubular member and the antenna assembly; wherein the shaft is selectively adjustable relative to the feedline between a first length, where the shaft is in a retracted configuration, and a second length.
摘要:
Microwave ablation applicators and methods for manufacturing the microwave ablation applicators are disclosed. A microwave ablation applicator includes a feed-line segment, a step-down segment, and a radiator base segment. The feed-line segment includes a first inner conductor, a first dielectric disposed on the first inner conductor, and a first outer conductor disposed on the first dielectric. The step-down segment includes a second inner conductor, a second dielectric disposed on the second inner conductor, and a second outer conductor disposed on the second dielectric. The radiator base segment includes a third inner conductor disposed on the third inner conductor, a third outer conductor disposed on the proximal end of the third dielectric so as to form a feed gap at a distal end of the radiator base segment, a balun dielectric disposed on the third outer conductor, and a balun outer conductor disposed on the balun dielectric.
摘要:
The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy.