Radio-frequency generator for powering an ablation device
First Claim
1. A system for ablating uterine tissue comprising:
- a radio frequency (RF) ablation device comprising an elongate member and expandable applicator head coupled to a distal portion of the elongate member, the applicator head comprising a tissue contacting surface and an expandable-contractible carrying member, the carrying member having a contracted state and an expanded state, the contracted state being configured for transcervical insertion and the expanded state being configured for positioning the applicator head in contact with tissue to be ablated, the applicator head including one or more electrodes for ablating endometrial lining tissue of the uterus, the RF ablation device being configured to determine data related to the uterine cavity based on a degree of expansion of the carrying member when in the expanded configuration; and
an RF generator, wherein when the RF generator is operably coupled to the RF ablation device, the RF generator is configured to receive the data from the RF ablation device and to provide an RF signal to the RF ablation device based on the data.
10 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.
270 Citations
10 Claims
-
1. A system for ablating uterine tissue comprising:
-
a radio frequency (RF) ablation device comprising an elongate member and expandable applicator head coupled to a distal portion of the elongate member, the applicator head comprising a tissue contacting surface and an expandable-contractible carrying member, the carrying member having a contracted state and an expanded state, the contracted state being configured for transcervical insertion and the expanded state being configured for positioning the applicator head in contact with tissue to be ablated, the applicator head including one or more electrodes for ablating endometrial lining tissue of the uterus, the RF ablation device being configured to determine data related to the uterine cavity based on a degree of expansion of the carrying member when in the expanded configuration; and an RF generator, wherein when the RF generator is operably coupled to the RF ablation device, the RF generator is configured to receive the data from the RF ablation device and to provide an RF signal to the RF ablation device based on the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification