Abstract:
An electrosurgical instrument which is capable of simultaneously ablating an area of tissue with microwave energy and performing resection with RF energy. The instrument comprises a structure for conveying both RF and microwave energy to an instrument tip that is configured to emit the microwave energy in a manner suitable for ablation (e.g. as a substantially spherical field) and to emit the RF energy in a more focussed manner to enable accurate and controllable resection to be performed. The energy conveying structure comprises a coaxial transmission line for conveying microwave energy. The coaxial transmission line has a hollow inner conductor that defines a passage that supports a second transmission line for conveying radiofrequency energy.
Abstract:
An electrosurgical device comprises an electrically conductive elongate member for traversing body vasculature defining a hollow lumen with one or more apertures at or near its distal end, wherein electrical energy can flow through the wall of the elongate member; and an energy delivery device in electrical communication with the elongate member is located distal to the end of the elongate member. The energy delivery device includes an electrode for delivering energy. Methods of using the electrosurgical device include cutting through occlusions and creating transseptal punctures.
Abstract:
An electrosurgical device comprises an electrically conductive elongate member for traversing body vasculature defining a hollow lumen with one or more apertures at or near its distal end, wherein electrical energy can flow through the wall of the elongate member; and an energy delivery device in electrical communication with the elongate member is located distal to the end of the elongate member. The energy delivery device includes an electrode for delivering energy. Methods of using the electrosurgical device include cutting through occlusions and creating transseptal punctures.
Abstract:
Impedance devices and methods of using the same to obtain luminal organ measurements. In at least one embodiment of an impedance device of the present disclosure, the impedance device comprises an elongated body having a distal body end, and a first electrode located along the elongated body at or near the distal body end, the first electrode configured to obtain one or more conductance values within a mammalian luminal organ within an electric field, wherein a measured parameter of the mammalian luminal organ can be calculated based in part upon the one or more conductance values obtained by the first electrode.
Abstract:
Methods and devices described herein facilitate improved access of locations within the body by providing a variety of dissection modes on a single access device.
Abstract:
Minimally invasive methods and devices for endoluminally treating female fallopian tubes or male vas deferens of mammals are presented as a permanent method of contraception. In preferred embodiments, medical devices for male and female sterilization comprise laser radiation source operating at one or more preselected wavelengths between about 980 nm and about 1950 nm, preferably at least one of 980 nm, 1470 nm and 1950 nm; treatment waveguide with a radial or cylindrical radiation emitting tip; viewing scope; and a temperature sensor. In another preferred embodiment, a minimally-invasive permanent contraception method for males and females comprises the steps of introducing at least one treatment waveguide in a body cavity; positioning the treatment waveguide inside a body cavity; irradiating; and repeating the procedure in companion body cavity to inhibit fertilization. In another embodiment, fluids are infused and/or extracted after, before or during the procedure to enhance laser energy absorption and enhance efficiency of laser treatment.
Abstract:
In a surgical system, a system controller executes a video signature identification and image control routine to maintain quality of a video image taken by a video camera located at a surgical site and provided on a video display. The system includes a video camera/light source handpiece for insertion into a patient body. A tool is inserted separately into the surgical site. Fluid input into the surgical site is provided by a liquid pump or by an insufflator. Video signals are analyzed and fluid input/output, fluid pressure, and/or tool operation is automatically controlled to maintain image quality of the surgical site without manual adjustments.
Abstract:
Methods and devices described herein facilitate improved access of locations within the body by providing a variety of dissection modes on a single access device.
Abstract:
Electrosurgical procedures. At least some of the example methods for detecting that an electrosurgical wand is effected by a blockage, including supplying a high frequency energy to an active electrode of an electrosurgical wand; drawing an electrically conductive fluid from the vicinity of the active electrode; sensing a temperature signal indicative of a temperature of the electrically conductive fluid drawn from the vicinity of the active electrode; and cycling the high frequency energy supplied upon the temperature of the electrically conductive fluid drawn from the vicinity of the active electrode exceeding a first threshold temperature.
Abstract:
An apparatus to treat a patient, the apparatus comprises a carrier having a proximal end and a distal end, an optical fiber to couple to a light source, a fluid delivery element comprising a nozzle having an orifice on the distal end, and an alignment structure to align the optical fiber with the orifice. A distance extends between the alignment structure and the orifice, such that the light beam emitted from the optical fiber diverges so as to allow energy transmission and fluid flow through the orifice. In some embodiments, the apparatus to ablate tissue comprises a source of pressurized fluid, and the nozzle is coupled to the source of pressurized fluid to release a fluid stream.