| GYRUS MEDICAL LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20120083779 | ELECTROSURGICAL SYSTEM - A method of controlling an electrosurgical system is described, the system including an electrosurgical generator and an electrosurgical instrument connected to the generator by means of a cable. A radio frequency signal is supplied to the electrosurgical instrument at an operating frequency, and the voltage of the radio frequency signal is monitored at a frequency corresponding to the frequency of a resonant circuit established by the electrosurgical instrument together with the cable. The monitored voltage is capable of indicating the initiation of arcing from the electrosurgical instrument, such that the voltage of the radio frequency signal can be adjusted in response to the monitored voltage at the resonant frequency. The magnitude of the monitored voltage is an indication of the degree of arcing. An electrosurgical system including an arc detector is also disclosed. | 04-05-2012 |
| 20110190766 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument is manufactured by presenting an electrode ( | 08-04-2011 |
| 20110190757 | ELECTROSURGICAL INSTRUMENT AND SYSTEM - An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes. | 08-04-2011 |
| 20100286685 | Electrosurgical generator - An electrosurgical generator for coagulating tissue comprises a source of radio frequency (RF) energy, and at least a pair of output terminals for connection to a bipolar electrosurgical instrument adapted to contact tissue, the output terminals delivering RF energy from the source to the instrument such that the source delivers RF energy into tissue. The generator also includes boiling detection means for determining when the RF energy starts to cause the boiling of electrolytes within the tissue. A timer is adapted to determine when a predetermined period of time has elapsed since the boiling detection means has indicated the start of the boiling of electrolytes. An indication means gives an indication when the predetermined period of time has elapsed. | 11-11-2010 |
| 20100137854 | Electrosurgical generator and system - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporisation at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in combination with a cutting forceps instrument, such that the coagulation and cutting of the tissue may be performed simultaneously. | 06-03-2010 |
| 20100121320 | Electrosurgical system and an electrode assembly for an electrosurgical system - An electrosurgical system includes a first unit including a generator, and a second unit including an electrode assembly, the second unit being detachably connectible to the first unit such that radio frequency power can be conveyed to the electrode assembly, wherein the second unit firstly includes a passive electrical identification component having a parameter of a finite non-zero value indicative of a characteristic of the electrode assembly, and the second unit additionally includes an output circuit adapted to generate an identifiable characteristic signal, the first unit firstly including a sensing circuit for determining the value of the electrical identification component so as to identify the second unit when the second unit is connected to the first unit, and the first unit additionally including means for receiving the identifiable characteristic signal from the output circuit when the second unit is connected to the first unit. | 05-13-2010 |
| 20100114090 | ELECTROSURGICAL GENERATOR AND SYSTEM - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporization at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in combination with an instrument having both bipolar coagulation electrodes and a remote return pad, the generator including means for varying the RF voltage outputs to vary the relative preponderance of bipolar and monopolar coagulation. | 05-06-2010 |
| 20100082026 | Electrosurgical instrument and system - An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes. | 04-01-2010 |
| 20090318915 | Electrosurgical generator and system - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporisation at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in which the output transformer has windings forming at least three phases, the transformer core being constructed to provide at least three magnetic circuits each of which is inductively linked to the windings of at least two of the three phases. | 12-24-2009 |
| 20090187185 | Surgical instrument - An articulated surgical instrument includes a handle, an actuating assembly associated with the handle, and a shaft including a proximal end coupled to the handle, a deflectable portion and an end effector. Distal portions of deflection wires are connected to the shaft. Proximal portions of the wires are connected to the actuating assembly. Movement of the actuating assembly moves the deflection wires to cause a deflection of the deflectable portion. The actuating assembly includes one or more actuators and one or more slider members associated with the actuators and connected to the deflection wires. The slider members are movable linearly between first and second positions, the proximal portions of the deflection wires being connected to the slider members. One of the actuators and slider members has a cam track and the other has a cam follower, such that movement of an actuator by the user of the instrument causes a linear movement of a slider member from its first position to its second position, so as to move the deflection wires causing a corresponding deflection of the deflectable portion. | 07-23-2009 |
| 20090177040 | Instrument shaft - A shaft for a flexible endoscopic instrument is provided in which the shaft comprises a generally tubular frame member, the tubular frame member providing the shaft with at least one flexible section along the length of the shaft, the flexible section having a greater flexibility than at least one other section of the shaft. The flexible section of the shaft has a proximal end and a distal end, and is provided with first and second series of slots, the slots of the first series alternating with the slots of the second series to form an offset pattern of staggered slots in the frame member to provide the different stiffness properties. Each of the slots in a selected one of either the first or second series of slots is of a different length as compared to other slots in that series of slots, the slots in the selected series varying in length according to a predetermined progression, such that the flexible section is designed to deflect in a controlled and predetermined manner. | 07-09-2009 |
| 20090093804 | Electrosurgical system - An electrosurgical system includes a generator for generating radio frequency power, an electrosurgical instrument including at least first and second electrodes carried on the instrument, and a monopolar patient return electrode separate from the instrument. The generator comprises at least one source of radio frequency (RF) power, and has a first supply state in which the RF waveform is supplied between the first electrode and the patient return electrode, and a second supply state in which the RF waveform is supplied between a second electrode and the monopolar patient return electrode. A controller is operable to control the generator such that, in at least one mode of the generator, feeding means within the generator is adapted to alternate between the first and second supply states. | 04-09-2009 |
| 20090054889 | Electrosurgical system - An electrosurgical system includes an electrosurgical generator, for generating radio frequency power, and an electrosurgical instrument including an electrode assembly. The electrosurgical instrument is detachably connectible to the generator such that radio frequency power can be conveyed to the electrode assembly. The generator includes a counter incremented each time an electrosurgical instrument is connected to the generator, and the electrosurgical instrument includes a memory device capable of recording the value of the counter when the electrosurgical instrument is connected to the generator. The system further includes a comparison unit capable of comparing the current value of the counter with the value of the counter stored in the memory device, and generating a signal when the difference between the two values of the counter is greater than a predetermined threshold. | 02-26-2009 |
| 20090012516 | Electrosurgical system - An electrosurgical system includes an electrosurgical generator ( | 01-08-2009 |
| 20080294157 | Electrosurgical system and an electrode assembly for an electrosurgical system - In an electrosurgical system having a generator for generating radio frequency (RF) power and an electrosurgical instrument, the instrument includes a passive electrical identification component having a parameter of finite non-zero value identifying the instrument. The generator has a sensing circuit with a second electrical component, a signal source providing a voltage step-change, and a signal detector for detecting a transient response of the combination of the identification component and the second electrical component, the detector output signal being representative of the parameter value thereby allowing automatic identification of the instrument when it is connected to the generator. Also disclosed is an electrode assembly in which the identification component is associated with a digital device including a memory, the instrument having a pair of contacts interconnected by the identification component and serving to supply power from the generator to the digital device and/or convey data from a data output of the digital device. | 11-27-2008 |
| 20080294156 | Electrosurgical generator - An electrosurgical generator includes one or more radio frequency (RF) power sources and an output stage including at least two output lines for connection to an electrosurgical instrument. The generator includes means for measuring a parameter associated with the electrosurgical procedure, such as the impedance measured across two of the output lines. A controller controls the generator such that it delivers a first RF waveform (such as a cutting signal) or a second RF waveform (such as a coagulating signal) to the output lines, and, in a combined mode, both first and second waveforms. The controller automatically adjusts at least one aspect of one or both waveforms in the combined mode, in response to the measured parameter associated with the surgical procedure. | 11-27-2008 |
| 20080287948 | Electrosurgical system - An electrosurgical system includes a generator for generating radio frequency power, an electrosurgical instrument including at least first and second bipolar electrodes carried on the instrument, and a monopolar patient return electrode separate from the instrument. The generator comprises a source of radio frequency (RF) power, and has a first supply state in which the RF waveform is supplied between the first and second bipolar electrodes of the electrosurgical instrument, and a second supply state in which the RF waveform is supplied between at least one of the first and second bipolar electrodes and the monopolar patient return electrode. A controller is operable to control the generator such that, in at least one mode of the generator, a feeding means is adapted to alternate between the first and second supply states to supply an alternating signal. | 11-20-2008 |
