Abstract:
A surgical system comprising a generator and a surgical instrument configured to receive power from the generator is disclosed. The surgical instrument comprises a housing, a shaft defining a longitudinal axis, an end effector, and an internal charge accumulator. The housing comprises a motor. The end effector is operably responsive to actuations from the electric motor, transitionable between an open and closed configuration, and rotatable about an articulation axis transverse to the longitudinal axis. The generator is incapable of supplying a sufficient power directly to the motor to perform the actuations. The internal charge accumulator is in electric communication with the generator and supplies power to the motor. The internal charge accumulator is chargeable by the generator to a threshold value at a charge rate dependent on a charge level of the internal charge accumulator. The charge rate is independent of a charge expenditure by the surgical instrument.
Abstract:
A modular energy system comprising one or more energy modules is provided. Each of the one or more energy modules comprises a plurality of ports, and wherein each of the plurality of ports is configured to deliver an energy modality to a surgical instrument connected thereto. The modular energy system comprises a header module comprising a display screen. The display screen is configured to render a graphical user interface. The GUI is configured to display controls corresponding to the one or more energy modules that are connected to the header module.
Abstract:
Methods and apparatuses are provided for neutral drive feedback loop compensation of detected electrosurgical unit signals. An apparatus includes an electrosurgery unit (ESU) signal detection circuit, a compensation switch, and an ESU filter switch. Both switches activate based on an output of the ESU signal detection circuit. A neutral drive feedback loop circuit is configured to compensate for a phase change characteristic of an ESU filter circuit.
Abstract:
Apparatus, including an energy generator configured to supply a first ablation power at a first frequency and a second ablation power at a second frequency which is different from the first frequency. The apparatus also includes a probe with at least one electrode coupled to receive the first and second ablation powers simultaneously and to dissipate the first and second ablation powers in body tissue in contact with the electrodes.
Abstract:
An electrosurgical system including an electrosurgical unit with amplitude modulated output for ablation surgical devices, whereby the electrosurgical unit generates a signal in either a high mode or low mode, both of which are greater than zero, is disclosed. In at least one embodiment, the electrosurgical unit may be configured such that the power delivered to an electrode assembly of an ablation device in electrical communication with the electrosurgical unit is controlled by varying the duration or the intensity of power delivered during the high and low modes, or both. In another embodiment, the duration of the high mode may remain constant while the duration of the low mode may vary in order to vary the power output from the electrosurgical unit.
Abstract:
An electrode catheter device with indifferent electrode for direct current tissue therapies is disclosed. An example of the catheter device has a flexible tubing with at least one ablation electrode. The catheter device also may also be used with a sheath for introducing the flexible tubing inside a patient's body. An indifferent electrode on the sheath can provide a ground for a direct current (DC) pulse to deliver electrical energy and create an electrical field adjacent a tissue. Various other embodiments are also disclosed.
Abstract:
An endoscope system 1 includes: a flexible endoscope 10 having a flexible insertion section 11, an operation section 12, and a flexible channel 14 that passes through the insertion section 11; a treatment tool 20 with a treatment unit 22 passing through the channel 14 and projecting from an opening 14B of a distal end portion; a return electrode 40; and a power supply 30 for outputting high-frequency power, wherein the endoscope 10 has a power transmission unit 19 including a transmission electrode 18 for generating an alternating electric field to be applied to the channel by the high-frequency power input from the power supply 30, and the treatment tool 20 outputs, to the treatment unit 22, power received by a power reception unit 29 including a reception electrode 28 capacitively coupled to the transmission electrode 18.
Abstract:
EExample apparatuses and systems are disclosed for providing controlled delivery of electrolysis products to a site which may be used for treatment of infection and ablation of undesirable cells and tissue. A system disclosed may include a power supply, two electrodes, an aqueous matrix that may close the electric circuit between the electrodes at the treated site, and a controller. The controller may control the electrical circuit to induce a direct current through the electrodes and an aqueous matrix to produce electrolysis products. The duration and magnitude of the charge applied may determine the dose of the products applied to the treatment site. The composition of the electrodes and the aqueous matrix may be chosen to produce desired products. An apparatus is disclosed that may be in the form of a pad for applying to a wound. An apparatus is disclosed that may be used for treating internal tissue.
Abstract:
A method is described for modifying at least one property of a tissue of or near a nasal valve of a nose, without using a surgical incision or an implant, to decrease airflow resistance or perceived airflow resistance in a nasal airway. The method may involve contacting a treatment element of a treatment device with the at least one tissue inside the nasal airway, with sufficient force to at least temporarily deform the at least one tissue, applying energy to, or removing energy from, the at least one tissue, using the treatment element, and removing the treatment element from the nostril.