scispace - formally typeset
Patent

Endometrial ablation apparatus and method

Reads0
Chats0
TLDR
In this paper, an endometrial ablation method comprising passing sufficient RF current having a frequency of from 250 kHz to about 100 MHz through substantially the entire surface of the endometrium was presented.
Abstract
An endometrial ablation method comprising passing sufficient RF current having a frequency of from 250 kHz to about 100 MHz through substantially the entire surface of the endometrium to heat the endometrium, in a single operation, to a temperature within the range of from 45 °C to 90 °C and preferably not above 70 °C for a time sufficient to destroy the cells of the lining while maintaining the average temperature of the myometrium at a temperature below 42 °C. The apparatus comprises an electroconductive expandable member such as a balloon (14) for extending the organ and effecting electrical contact with the endometrial lining to be destroyed. The balloon is connected to power source (30) adapted to provide radiofrequency electric power having the desired characteristics to selectively heat the endometrial lining to the desired temperature. The balloon (14) can be an electroconductive elastomer such as a mixture of a polymeric elastomer and electroconductive particles. Alternatively, it can be a non-extensible bladder having a shape and size, which will extend the organ and effecting contact with the endometrial lining to be destroyed.

read more

Citations
More filters
Patent

Vessel sealer and divider

TL;DR: An endoscopic bipolar forceps as mentioned in this paper includes an elongated shaft having opposing jaw members at a distal end thereof, which are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to each another to a second position wherein jaw members cooperate to grasp tissue therebetween.
PatentDOI

Catheters for imaging, sensing electrical potentials and ablating tissue

TL;DR: In this paper, an acoustic imaging system for use within a heart has a catheter, an ultrasound device, and an electrode mounted on the catheter to create an ultrasonic image, and the electrode is arranged for electrical contact with the internal structure.
Patent

Electrosurgical generator and system

TL;DR: In this article, the authors present a controller that can cause the generator to supply a blended output signal alternating constantly between a first output signal across the output connections in which the radio frequency output voltage developed across output connections is limited to at least a first predetermined threshold value for cutting or vaporization of tissue, and a second output signal with a power supply coupled to the output stage for supplying power to output stage.
Patent

Apparatus and method for sealing and cutting tissue

TL;DR: In this paper, a bipolar tissue sealer/cutter for electrosurgery on tissue is described, where axial movement of a tube relative to a chassis is allowed.
Patent

Fluid-assisted medical devices, systems and methods

TL;DR: In this article, the authors describe an exemplary surgical device for treating tissue and methods of treating tissue, which includes a handle, a fluid passage connectable to a fluid source, a tip portion and a distal end.
References
More filters
Patent

Urethral inserted applicator for prostate hyperthermia

TL;DR: In this article, a urethral inserted applicator for prostate hyperthermia includes a multi-tube, balloon type catheter, which includes first and second closed end fluid dry tubes, respectively, for a helical coil electrode type applicator, and an electromagnetic field compatible temperature sensor for measuring the temperature of the prostate tissue.
Patent

Microwave balloon angioplasty

TL;DR: A microwave catheter system used for heating arterial plaque and including a catheter member adapted for positioning in the artery and an inflatable balloon supported at the distal end of the catheter is described in this paper.
Patent

Device and method for heating tissue in a patient's body

TL;DR: In this paper, a balloon is mounted on the catheter shaft and filled with an electrically conductive fluid, two or more electrical contacts enclosed within the chamber, a power supply for applying an electrical potential to the contacts, and a two-or more conductors for connecting each of the contacts to the power supply.
Patent

Apparatus for endometrial ablation and method of using same

TL;DR: In this paper, a thermal ablation of the endometrium of a uterus is performed using a catheter with at least one lumen and a thermally conductive inflatable member coupled to the distal end of the catheter.
Patent

Method and apparatus for thermally destroying a layer of an organ

TL;DR: In this article, a catheter with an elongated member having a plurality of lumens therein was used for thermally destroying a layer of an organ such as the mucosal layer of the gallbladder.