Patents by Inventor Colin Charles Owen Goble

Colin Charles Owen Goble has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7785322
    Abstract: A tissue treatment system has a radio frequency generator and a handheld treatment instrument that generates a gas plasma jet for delivering thermal energy to a tissue surface to be treated. Incorporated in the housing for the generator is a calibration device for adjusting the energy output of the generator, if necessary, at the beginning of a treatment session. The calibration device has a target element with a target surface, a transducer for sensing changes in temperature of the target element with respect to the temperature of a reference element, and an energy output adjuster for adjusting the radio frequency energy output of the generator in response to a calibration signal generated by the transducer. The generator housing has a receptacle for locating the nozzle of the handheld instrument in juxtaposition with the target element so that when a plasma burst is generated as part of a calibration sequence it is incident on the target surface.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: August 31, 2010
    Assignee: Plasmogen Inc.
    Inventors: Keith Penny, Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: 7214224
    Abstract: An electrosurgical system includes a generator (10) for generating radio frequency power, an electrosurgical instrument (12) including at least two electrodes, and an identification element (80) representative of at least the number of electrodes present on the instrument. The generator (10) comprises an RF output stage having three or more output connections (62A, 62B, 62C), and a power supply (66) coupled to the output stage for supplying power to the output stage. The generator (10) also includes a controller (72) capable of varying the RF signal supplied to at least one of the three or more output connections (62A, 62B, 62C), and a switching circuit (62) for varying the connections between the power supply (66) and the three or more output connections.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: May 8, 2007
    Assignee: Gyrus Medical Limited
    Inventor: Colin Charles Owen Goble
  • Patent number: 7211084
    Abstract: An electrosurgical cutting blade (1) comprises a first electrode (2), a second electrode (3), and an electrical insulator (4) separating the first and second electrodes. The first and second electrodes have dissimilar characteristics (cross-sectional area, thermal conductivity etc.) such that the first electrode (2) is encouraged to become an active electrode and the second electrode (3) is encouraged to become a return electrode. The spacing between the first and second electrodes (between 0.25 mm and 3.0 mm) and the peak voltage supplied to the electrodes (2 and 3) are both selected such that arcing does not occur directly between the electrodes, but between the first electrode and the tissue at the target site. The arrangement is such that, in use, a thermal differential of at least 50° C. is established between the first and second electrodes (2 and 3), such that the second electrode is maintained below a temperature of 70° C.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: May 1, 2007
    Assignee: Gyrus Group PLC
    Inventors: Colin Charles Owen Goble, Kester J. Batchelor, Mark G. Marshall
  • Patent number: 7204835
    Abstract: A bipolar electrosurgical instrument comprises a handle (5), a body (1) joined to the handle, and a jaw assembly (12) joined to the body and arranged such that manipulation of the handle allows the opposed jaws of the jaw assembly to be opened and closed with respect to one another. A first of said opposed jaws (14) has at least a first coagulating electrode, and the other of said opposed jaws (13) has at least a second coagulating electrode and a cutting electrode (16) separated from the second coagulating electrode by an insulating member (17). The instrument is manipulated at the surgical site such that the jaws of the jaw assembly (12) are open with respect to one another, with the cutting electrode (16) and at least one of the first and second coagulating electrodes contacting tissue at the surgical site.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: April 17, 2007
    Assignee: Gyrus Medical, Inc.
    Inventors: Scott T. Latterell, Douglas S. Wahnschaffe, Scott R. Sanders, Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: 6966909
    Abstract: An electrosurgical instrument for use in cutting and/or coagulating tissue includes one or more electrode surfaces (15 and 16) at least partly coated with tungsten disulphide. The tungsten disulphide coating acts to reduce the incidence of tissue becoming adhered to the or each electrode surface (15, 16). Examples of electrosurgical instruments employing such coated electrodes include forceps, scissors or scalpel blade instruments.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: November 22, 2005
    Assignee: Gyrus Medical Limited
    Inventors: Mark George Marshall, Colin Charles Owen Goble
  • Patent number: 6832998
    Abstract: An electrosurgical cutting blade (1) comprises a first electrode (2), a second electrode (3), and an electrical insulator (4) separating the first and second electrodes. The first and second electrodes (2 and 3) have dissimilar characteristics (cross-sectional area, thermal conductivity etc.) such that the first electrode (2) is encouraged to become an active electrode and the second electrode (3) is encouraged to become a return electrode. The spacing between the first and second electrodes (between 0.25 mm and 3.0 mm) and the peak voltage supplied to the electrodes are both selected such that arcing does not occur directly between the electrodes, but between the first electrode and the tissue at the target site. The arrangement is such that, in use, a thermal differential of at least 50° C. is established between the first and second electrodes, such that the second electrode is maintained below a temperature of 70° C.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 21, 2004
    Assignee: Gyrus Group PLC
    Inventor: Colin Charles Owen Goble
  • Publication number: 20040054365
    Abstract: An electrosurgical system includes a generator (10) for generating radio frequency power, an electrosurgical instrument (12) including at least two electrodes, and an identification element (80) representative of at least the number of electrodes present on the instrument. The generator (10) comprises an RF output stage having three or more output connections (62A, 62B, 62C), and a power supply (66) coupled to the output stage for supplying power to the output stage. The generator (10) also includes a controller (72) capable of varying the RF signal supplied to at least one of the three or more output connections (62A, 62B, 62C), and a switching circuit (62) for varying the connections between the power supply (66) and the three or more output connections.
    Type: Application
    Filed: August 18, 2003
    Publication date: March 18, 2004
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Colin Charles Owen Goble
  • Publication number: 20030176858
    Abstract: An electrosurgical instrument for use in cutting and/or coagulating tissue includes one or more electrode surfaces (15 and 16) at least partly coated with tungsten disulphide. The tungsten disulphide coating acts to reduce the incidence of tissue becoming adhered to the or each electrode surface (15, 16). Examples of electrosurgical instruments employing such coated electrodes include forceps, scissors or scalpel blade instruments.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 18, 2003
    Applicant: Gyrus Medical Limited
    Inventors: Mark George Marshall, Colin Charles Owen Goble
  • Publication number: 20030139741
    Abstract: An electrosurgical instrument for use in cutting and/or coagulating tissue includes one or more electrode surfaces coated with a material having a positive temperature coefficient of impedance. The PTC coating acts to control the temperature of the electrodes and to reduce the incidence of tissue becoming adhered to the electrode surface. Examples of electrosurgical instruments employing such coated electrodes include forceps, scissors or scalpel blade instruments.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 24, 2003
    Applicant: Gyrus Medical Limited
    Inventors: Colin Charles Owen Goble, Mark George Marshall
  • Publication number: 20030125732
    Abstract: An electrosurgical cutting blade (1) comprises a first electrode (2), a second electrode (3), and an electrical insulator (4) separating the first and second electrodes. The first and second electrodes (2 and 3) have dissimilar characteristics (cross-sectional area, thermal conductivity etc.) such that the first electrode (2) is encouraged to become an active electrode and the second electrode (3) is encouraged to become a return electrode. The spacing between the first and second electrodes (between 0.25 mm and 3.0 mm) and the peak voltage supplied to the electrodes are both selected such that arcing does not occur directly between the electrodes, but between the first electrode and the tissue at the target site. The arrangement is such that, in use, a thermal differential of at least 50° C. is established between the first and second electrodes, such that the second electrode is maintained below a temperature of 70° C.
    Type: Application
    Filed: March 21, 2002
    Publication date: July 3, 2003
    Inventor: Colin Charles Owen Goble
  • Patent number: 6547786
    Abstract: In an electrosurgery system having a radio frequency generator and an instrument with a treatment electrode, the generator includes a circuit for sensing thermionic emission from the electrode as means of controlling the supply of radio frequency power to the electrode. Thermionic emission is sensed by detecting d.c. voltage at the output of the generator, or an a.c. representation of the d.c. voltage, using a detector with an isolated output, and generator output power is controlled so as to limit the d.c. voltage or the a.c. representation to a predetermined threshold. Accordingly, the temperature of the electrode can be limited to avoid electrode destruction. The invention also has application to reducing nerve stimulation due to electrosurgical treatment.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: April 15, 2003
    Assignee: Gyrus Medical
    Inventor: Colin Charles Owen Goble
  • Patent number: 6416509
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporization or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning. In a blended mode, the output voltage is alternately limited to a value appropriate for coagulation and a value appropriate for cutting or vaporization.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: July 9, 2002
    Assignee: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: 6409724
    Abstract: An electrosurgical instrument has coaxial inner and outer tubular members (1,2) made of a conductive material to form a coaxial transmitting line. The inner member (1) is preferably dimensioned to receive a laparoscopic tool with the working elements of the tool projecting beyond a distal end (1D) of the inner member (1). Alternatively, the inner member (1) may, itself, incorporate a working element at its distal end. The outer member (2) is connected to the inner member (1) at a distance from the distal end (1D) of the later, and a radio frequency (r.f.) feed (4) is connected to the inner member (1) distally of the connection (7) between the inner and outer members. Between the connections there is an r.f. isolating structure formed by or associated with the inner member (1) to present a series impedance between the connections (4,7) at an operating frequency of the instrument.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: June 25, 2002
    Assignee: Gyrus Medical Limited
    Inventors: Keith Penny, Francis E Amoah, Colin Charles Owen Goble
  • Patent number: 6364877
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporisation or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: April 2, 2002
    Assignee: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Publication number: 20020029036
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporization or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning. In a blended mode, the output voltage is alternately limited to a value appropriate for coagulation and a value appropriate for cutting or vaporization.
    Type: Application
    Filed: August 9, 2001
    Publication date: March 7, 2002
    Applicant: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Publication number: 20020022836
    Abstract: An electrosurgery system for electrosurgically cutting or vaporising living tissue includes an electrosurgical generator having a pair of output terminals coupled to an electrosurgical instrument containing an electrode assembly. The electrode asssembly has at least one treatment electrode and an adjacent return electrode. The generator and the assembly are arranged to deliver to the treatment and return electrodes radio frequency (r.f.) energy individually or simultaneously at at least two frequencies, one of which is below 100 MHz and the other of which is above 300 MHz. The generator includes a load-responsive control circuit which, in one mode, causes power to be generated predominantly at the lower frequency when the load impedance is high and predominantly at the upper frequency when it is low. This allows automatic switching between cutting and coagulation operation. In another embodiment the r.f.
    Type: Application
    Filed: September 5, 2001
    Publication date: February 21, 2002
    Applicant: GYRUS MEDICAL LIMITED
    Inventors: Colin Charles Owen Goble, Nigel Mark Goble, Francis Amoah
  • Patent number: 6306134
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporization or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: October 23, 2001
    Assignee: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: 6293942
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporization or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: September 25, 2001
    Assignee: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: 6261286
    Abstract: An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam Generation. The same peak voltage limitation technique is used in a tissue vaporisation or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: July 17, 2001
    Assignee: Gyrus Medical Limited
    Inventors: Nigel Mark Goble, Colin Charles Owen Goble
  • Patent number: RE41921
    Abstract: An electrosurgical generator has output terminals for connection to active and return electrodes respectively of an electrosurgical instrument and, connected to the output terminals via at least one isolation capacitor, a radio frequency (r.f.) source which may be pulsed by a pulsing circuit. To permit tissue removal at a high rate, the source and the pulsing circuit are arranged so as to generate a pulsed r.f. output signal having a peak-to-peak voltage of at least 1250V, a mark-to-space ratio not more than 1:1, and a pulse length not more than 100 ?s.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: November 9, 2010
    Assignee: Gyrus Medical Limited
    Inventor: Colin Charles Owen Goble