Patent
Fluid cooled electrosurgical cauterization system
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TLDR
In this article, an electrosurgical probe with the ability to both cut and cauterize tissue is described, which includes at least one cauterization electrode mounted upon a distal portion of the probe and adapted to deliver electrosurgery energy to tissue.Abstract:
An electrosurgical probe (16) is disclosed which provides the ability to both cut and cauterize tissue. The probe includes at least one cauterization electrode (38, 40) mounted upon a distal portion of the electrode and adapted to deliver electrosurgical energy to tissue. Further, a central lumen (26) is disposed within the probe. The lumen (26) is adapted to accommodate the flow of fluid from a remote source (24) to tissue through an outlet port (36) in the distal end of the probe (16). Also, the lumen (26) houses a cutting electrode (34) which is selectively deployable. Both cauterization and coagulation can be conducted in a bipolar mode. The flow of fluid through the lumen (26) serves to limit the heat transfer from the cauterization electrode to adjacent tissue to an extent sufficient to prevent the sticking of tissue to the probe (16). A feedback system (100) is also provided to optimize the electrode temperature.read more
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Patent
An electrosurgical instrument
TL;DR: In this article, an electrosurgical instrument for the treatment of tissue in the presence of an electrically-conductive fluid was disclosed, consisting of an instrument shaft (32), and a tissue treatment electrode (31) at one end of the shaft.
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
Impedance feedback monitor for electrosurgical instrument
TL;DR: In this article, an impedance monitoring device is provided for monitoring the electrical impedance of tissue as it is treated with electrosurgical energy, based on a predicted model of tissue impedance and a number of initial impedance readings, the impedance at which tissue treatment is completed is predicted.
Patent
Electrosurgical generator with adaptive power control
TL;DR: In this article, an electrosurgical generator has an output power control system that causes the impedance of tissue to rise and fall in a cyclic pattern until the tissue is desiccated.
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.
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Method and apparatus for providing enhanced tissue fragmentation and/or hemostatis
TL;DR: In this paper, a vibratable tip for ultrasonically disintegrating tissue in a surgical procedure and for aspirating the disintegrated tissue and fluids away from the surgical site through an opening in the tip was presented.
Patent
Temperature controlled rf coagulation
TL;DR: In this paper, a temperature sensor (29) carried by and in thermally conductive relationship with an electrode (28) is connected for feedback to a control circuit (6) that modulates RF power applied to the electrode according to the signal received from the temperature sensor.
Patent
Automatic over-temperature control apparatus for a therapeutic heating device
TL;DR: In this article, an over-temperature control for heat lesion generation equipment in the case of neurosurgery is presented. But the system is a hybrid between a purely manually controlled radio frequency heating unit and a completely automatic controlling radio frequency unit, the latter being such that it automatically raises the radio frequency power and feedbacks on a set temperature to stabilize the final electrode temperature.
Patent
Multipolar electrosurgical device and method
TL;DR: In this paper, a multipolar electrosurgical device is described for use in neurosurgery or through the channel of an endoscope or other precision surgery procedures, which is formed with an insulative probe body, which, in the described embodiment, is sized to pass through a channel of a endoscope to enable the electrocoagulation of blood vessels such as may be needed in the treatment of a gastrointestinal ulcer.
Patent
Electrolyte purging electrode tip
TL;DR: An electrolyte fluid purging electrosurgical device for use with an electrode holder connected to an electrical power source and to a source of a non-electrically conductive fluid and a method of use are disclosed in this article.