GYRUS MEDICAL LIMITED Patent applications |
Patent application number | Title | Published |
20150209099 | ELECTROSURGICAL INSTRUMENT AND SYSTEM - A handheld electrosurgical instrument includes a handpiece ( | 07-30-2015 |
20140343547 | ELECTROSURGICAL INSTRUMENT & SYSTEM - An electrosurgical instrument includes an instrument shaft, a suction tube extending along the shaft, and a tissue treatment electrode at the distal end of the shaft. The tissue treatment electrode includes at least a first part and a second part, the first and second parts each having an outer section including mating surfaces adapted to form a close-fitting barrier when the first and second parts are mated one with another, such as to inhibit the passage of gas across the barrier. At least one of the parts also includes an inner section with a longitudinal recess so as to form a suction lumen when the first and second parts are mated one with another. The suction lumen is in fluid communication with the suction tube, the tissue treatment electrode also including one or more apertures in communication with the suction lumen. | 11-20-2014 |
20140303612 | ELECTROSURGICAL SYSTEM - An electrosurgical system includes at least a first unit and a second unit, the second unit being detachably connectible to the first unit and including an electrode assembly. The first unit includes a power supply, an RF oscillator circuit for generating a radio frequency output, and an output stage adapted to supply an RE output to the electrode assembly. The second unit includes an identification circuit presenting, in an alternating manner, a parameter with a first finite non-zero value for a first time period, and a parameter with a second finite value for a second time period. The first unit includes a sensing circuit and a controller adapted to detect a characteristic of the identification circuit and provide an output signal, the controller connected to the sensing circuit and receiving the output signal, adjusts the RF output so as to suit the particular electrode assembly. | 10-09-2014 |
20140214021 | ELECTROSURGICAL ELECTRODE - An electrode is for use in an electrosurgical probe, the electrode having two arms defining a longitudinal direction. The electrode also includes a loop depending from the two arms and defining a cutting area within the loop, and a vaporisation member attached to one side of the loop. The vaporisation member is such that it does not occlude the cutting area and yet presents a substantial profile when the electrode is moved in the longitudinal direction. The arrangement is such that when the electrode is moved in a first longitudinal direction, the loop is capable of resecting a sample of tissue. When the electrode is moved in the opposite longitudinal direction, the vaporisation member is capable of vaporising tissue adjacent thereto to form a groove therein. | 07-31-2014 |
20140171937 | ELECTROSURGICAL INSTRUMENT & SHAFT | 06-19-2014 |
20140058382 | ELECTROSURGICAL GENERATOR - An electrosurgical generator for generating radio frequency power, includes a radio frequency output stage having three or more output connections, and one or more sources of radio frequency output power coupled to the output stage. A controller causes the system to supply a first coagulating RF waveform to the output connections or a second cutting RF waveform to the output connections. The first RF waveform is delivered between a first pair of the output connections, and the second RF waveform is delivered between a second pair of the output connections. In a first mode of operation the controller supplies the first coagulating RF waveform, and in a second subsequent mode of operation the controller supplies the second cutting RF waveform for a first predetermined period of time followed by the first coagulating RF waveform for a second predetermined period of time, both periods being in excess of 1 second. | 02-27-2014 |
20140039486 | ELECTROSURGICAL SYSTEM - An electrosurgical instrument includes an active electrode and an instrument return electrode, while the resectoscope also includes a resectoscope return electrode. The generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform, and first, second and third output connections connected to the active electrode, the instrument return electrode, and the resectoscope return electrode respectively. The generator also includes a switching device, and a controller, the controller being such that when a cutting RF waveform is selected, the switching device directs the cutting RF waveform between the first and second output connections and hence the active electrode and the instrument return electrode. When a coagulating RF waveform is selected, the switching device directs the coagulating RF waveform between the first and third output connections and hence the active electrode and the resectoscope return electrode. | 02-06-2014 |
20130226155 | SURGICAL INSTRUMENT - A surgical instrument includes a housing, and a shaft including a proximal end, a deflectable portion and a distal tip. A handle is movable between first and second positions on the housing, and an actuator is movably coupled to the handle, such that movement of the handle between its first and second positions causes a corresponding movement of the actuator between first and second positions in the housing. A deflection wire includes proximal and distal portions, the distal portion being fixed to the shaft, and the proximal portion being affixed to the housing so as to provide a path length for the deflection wire within the housing. The movement of the handle causes the actuator to move to its second position, the second position of the actuator causing an increase in the path length for the deflection wire so as cause a deflection of the distal tip of the shaft. | 08-29-2013 |
20130150849 | 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. | 06-13-2013 |
20130138096 | SURGICAL INSTRUMENT AND SYSTEM - A surgical instrument comprises a housing, an end effector carried by the housing, and one or more connections adapted to connect the surgical instrument to a controller such as an electrosurgical generator. The housing includes a plurality of handswitches located at different rotational positions around the housing. The handswitches comprise two handswitch sets the handswitches of each set being connected in to common so as to send the same signal to the controller whichever one of the handswitches is activated. In this way a user of the surgical instrument can send signals to the controller using any of the handswitches within a particular set, depending on the orientation of the surgical instrument. | 05-30-2013 |
20130131666 | ELECTROSURGICAL INSTRUMENT - An endoscopic surgical instrument includes a stationary component, an elongate shaft extending from the stationary component, and an end effector located at the distal end of the shaft. The stationary component includes at least one contact portion adapted to be engaged by the fingers of a user, the instrument also including a movable component including a contact portion adapted to be engaged by the thumb of a user. Longitudinal movement between the contact portions of the movable component and the stationary component cause the movable component to move longitudinally with respect to the stationary component between a first proximal position, a second distal position, and a third position, the third position being distal of the second position by a relatively small distance. The movement of the movable component between the first and second positions causes a corresponding movement of the end effector between corresponding first and second positions. | 05-23-2013 |
20130090644 | ELECTROSURGICAL APPARATUS AND SYSTEM - An electrosurgical apparatus for coagulating tissue comprises an elongate tube ( | 04-11-2013 |
20130090643 | Electrosurgical apparatus and system - An electrosurgical apparatus for coagulating tissue comprises an elongated tube ( | 04-11-2013 |
20130079769 | ELECTROSURGICAL INSTRUMENT ASSEMBLY - A method of assembling an electrosurgical instrument ( | 03-28-2013 |
20120323231 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument includes an instrument shaft having a longitudinal axis, and an electrode assembly at one end of the shaft, the electrode assembly including first, second and third electrodes which are electrically insulated one from another by means of one or more insulation members. The instrument further includes first and second connections by which RF energy can be supplied to the instrument from an electrosurgical generator. The first electrode is movable longitudinally between an advanced position in which it extends from the instrument shaft and a retracted position in which it is less advanced with respect to the instrument shaft. When the first electrode is in its advanced position, the first and second connections are in electrical communication with the first and second electrodes. When moved to its retracted position, the first and second connections are caused to be in electrical communication with the second and third electrodes. | 12-20-2012 |
20120283723 | ELECTROSURGICAL INSTRUMENT - A bipolar snare including an elongated tubular electrically insulating sheath, a pair of elongated flexible electrically conductive wires disposed within the sheath, and an electrically insulating connector disposed at the distal ends of the wires mechanically connecting the distal ends of the wires to form a loop projecting from the distal end of the sheath. The wires are provided with electrical insulation covering all but a selected portion of each of the wires. The device also includes a guide member located within the sheath and forming compartments for each of the electrically conductive wires, the guide member being rotatable within the sheath. The guide member is also set back from the distal end of the sheath to an extent such that the whole of the loop including at least part of the connector is capable of being received within the sheath. | 11-08-2012 |
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 |