Patents Assigned to Gyrus Medical Limited
  • Patent number: 11134974
    Abstract: A surgical shaving instrument (1) comprises a main body (2), a hollow elongate shaft (4) extending from the main body (2). The elongate shaft (4) defines an elongate inner open volume through the shaft. A tip portion (18) extends from the distal end region of the elongate shaft (4). A driveshaft extends through the elongate shaft (4) from the main body (2) to the distal end region of the elongate shaft (4). A cutter head (12) is attached to the driveshaft and located in the tip portion (10), the cutter head (12) extends at least partially out of the tip portion (18). The aperture of the tip portion (18) is defined by an inner edge, and a portion of the inner edge defines a fixed shaver blade (40) for the instrument, the fixed shaver blade (40) having a cutting angle which is substantially constant along the inner edge.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 5, 2021
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Ole Schlottmann, David Morris
  • Publication number: 20210298820
    Abstract: The present invention provides a drive shaft for a bipolar surgical instrument, the drive shaft comprising an elongate body defining a first axis, and having a proximal end portion and a distal end portion, the elongate body comprising: a first portion defining a first open channel extending along a portion of the length of the elongate body; and a second portion distinct from the first portion, the second portion defining a second open channel extending along a portion of the length of the elongate body, wherein both the first and second portions are aligned with one another and extend parallel to the first axis, and wherein the first portion is spaced apart from the second portion so as to define a recessed blade track therebetween, the recessed blade track extending parallel to the first axis. The present invention further provides a bipolar surgical instrument incorporating such a drive shaft.
    Type: Application
    Filed: January 22, 2021
    Publication date: September 30, 2021
    Applicant: GYRUS MEDICAL LIMITED
    Inventors: Daniel John THOMAS, Bryan TISSINGTON
  • Publication number: 20210259756
    Abstract: A monopolar ionisable gas plasma coagulation applicator includes: an elongate shaft extending from a proximal end to a distal end, and defining a hollow inner volume and a longitudinal axis of the applicator; an applicator tip mounted on the distal end of the elongate shaft, wherein the applicator tip defines an aperture extending parallel to the longitudinal axis; and an electrode extending through the inner volume and with the applicator tip, the electrode includes an open channel having an electrode tip, wherein the electrode tip is received within the hollow inner volume of the shaft and the aperture of the applicator tip to define a gas flow channel defined by the electrode and the elongate shaft and by the electrode and the applicator tip, the gas flow channel extending parallel to the longitudinal axis within the elongate shaft and extending outwards along the longitudinal axis within the applicator tip.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 26, 2021
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Anthony ATWELL
  • Patent number: 11090114
    Abstract: A method and system for monitoring tissue temperature during microwave ablation of such tissue is disclosed. The method includes applying a predetermined correction value to a temperature measurement to provide a corrected temperature value.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 17, 2021
    Assignee: Gyrus Medical Limited
    Inventor: David Nicholas Williams
  • Patent number: 11090113
    Abstract: A microwave ablation antenna assembly (20) incorporates a choke assembly (40) having a dielectric element (42) and a conducting element (48). The conducting element (48) is chosen from a group of elements of fixed length, but with differing electrical lengths for providing cancellation properties for different wavelengths of microwave energy.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: August 17, 2021
    Assignee: Gyrus Medical Limited
    Inventor: David Nicholas Williams
  • Patent number: 11076915
    Abstract: A method and system for monitoring a microwave tissue ablation process, particularly the determination of an ablation size estimate during microwave ablation of such tissue. The method includes applying a correction value to the determined temperature value, so as to provide a corrected temperature value.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 3, 2021
    Assignee: Gyrus Medical Limited
    Inventors: David Nicholas Williams, Tudor Thomas
  • Publication number: 20210205001
    Abstract: An electrosurgical instrument that includes a hollow elongate shaft having a first axis and extending from a proximal end region to a distal end region. The instrument includes a tip portion at the distal end region that has a cavity. The cavity includes a base surface and a first retention surface extending away from the base surface in a direction towards the distal end region. The instrument also includes a conductor extending within the shaft and an electrode in the cavity and in electrical communication with the conductor. The electrode includes a first electrode element and a second electrode element in electrical connection and located adjacent one another. The second electrode element abuts and extends adjacent the first retention surface to restrain the movement of the electrode in a direction towards the outer surface of the tip portion and the proximal end region of the shaft.
    Type: Application
    Filed: December 30, 2020
    Publication date: July 8, 2021
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Ole SCHLOTTMANN
  • Publication number: 20210169560
    Abstract: Embodiments of the present invention provide an improved surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of several different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a trigger mechanism contained within the handle. In some embodiments, the end effector includes a pair of curved jaw members and a blade assembly having a cutting blade at its distal end. The trigger mechanism is arranged to drive the blade assembly longitudinally within the elongate shaft such that the cutting blade protrudes between the jaw members. In order to help the trigger mechanism push the blade assembly around the curved jaws, the distal end of the blade has a graduated flexibility such that it can more easily bend to the shape of the jaw members.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Applicant: GYRUS MEDICAL LIMITED
    Inventors: Neill Tomás BRENNAN, Lewis Meurig JONES
  • Patent number: 11007002
    Abstract: A jaw member for an electrosurgical instrument is manufactured by providing a jaw housing (1) having a longitudinal jaw section (2), and an electrically conductive plate (11) including one or more passages (14) therein. The electrically conductive plate is disposed on the jaw section of the jaw housing, and placed into a mold (15). A flowable insulating material (18) is injected into the mold to secure the electrically conductive plate to the jaw housing, such that the flowable material (18) flows through the one or more passages (14) to form one or more stop members (21) that project a predetermined distance from the electrically conductive plate.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 18, 2021
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Daniel John Thomas, Lewis Meurig Jones
  • Patent number: 10993767
    Abstract: A microwave ablation antenna assembly includes an elongate body that extends from a first end to a second end thereof, and which defines therein a hollow inner volume and a longitudinal axis of the antenna. The ablation antenna assembly includes an applicator tip portion mounted on the second end of the elongate body, an elongate coaxial conductor assembly for connection to a source of microwave energy, a dipole tip portion that extends from the feed point of the coaxial conductor assembly towards the applicator tip, and a choke assembly with first and second choke conductors.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: May 4, 2021
    Assignee: Gyrus Medical Limited
    Inventors: David Nicholas Williams, Tudor Thomas
  • Publication number: 20210093370
    Abstract: An improved footswitch is provided to control multiple functions of an electrosurgical instrument simultaneously. The footswitch comprises one or more pedals that are configured to control the functions of the instrument, wherein at least two of the functions can be activated at the same time. For example, the pedals may be arranged to activate a mechanical shaver function, and at the same time activate one or both of an RF cutting function and an RF coagulation function.
    Type: Application
    Filed: August 24, 2020
    Publication date: April 1, 2021
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Richard HOODLESS
  • Patent number: 10945784
    Abstract: An improved surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of several different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a trigger mechanism contained within the handle. The end effector includes a pair of curved jaw members and a blade assembly having a cutting blade at its distal end. The trigger mechanism is arranged to drive the blade assembly longitudinally within the elongate shaft such that the cutting blade protrudes between jaw members. In order to help trigger mechanism push the blade assembly around the curved jaws, the distal end of the blade has a graduated flexibility such that it can more easily bend to the shape of the jaw members. The distal end of blade may also be provided with a low friction coating.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: March 16, 2021
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Neill Tomás Brennan, Lewis Meurig Jones
  • Patent number: 10898265
    Abstract: A shaft assembly for a microwave ablation applicator which includes a shaft assembly and an antenna assembly located within the shaft assembly is disclosed. The shaft assembly comprises an elongate shaft which extends from a first end to a second end thereof, and which defines therein a hollow inner volume and a longitudinal axis of the antenna assembly, and an applicator tip mounted on the second end of the elongate shaft. The applicator tip defines an annular slot with which the second end of the elongate shaft engages. At least part a portion of the second end of the shaft is of a fibre reinforced plastics material having a plurality of elongate fibres bound in a plastics material, at least some of the fibres extending at least partially circumferentially around the annular slot of the applicator tip.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: January 26, 2021
    Assignee: Gyrus Medical Limited
    Inventors: Tudor Thomas, Lewis Jones, David Nicholas Williams
  • Patent number: 10881450
    Abstract: A surgical instrument having a handle, elongate shaft protruding from handle and end-effector located at end of shaft is described. To allow for rotation of the end-effector the shaft is connected to a rotation wheel mounted on handle, towards rearward end of handle proximal to the user. The rotation wheel is in the form of a thumbwheel, having an ergonomically designed shape that tapers from distal direction to proximal direction, with angle of the taper matching angle of the outer surface of the handle. The outer tapered surface of the thumbwheel has a number of shaped cut-out or scalloped portions arranged around the outer circumference of the wheel, and arranged in use to receive the tip of a user's thumb to allow the user to rotate the wheel in order to set the rotational orientation of the end-effector. Such an arrangement provides a comfortable and easy to use instrument.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: January 5, 2021
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10849604
    Abstract: A method of removing an appendix (9) includes the steps of accessing the abdomen of a patient, insufflating the abdominal cavity, and sealing and cutting the appendicular artery and vein. A sheath is introduced into the abdominal cavity and placed over the appendix, while the appendix is still attached to the colon. The sheath is secured the sheath in place over the appendix using a securing device to secure the sheath with respect to the proximal end of the appendix, and then the proximal end of the appendix is ligated. The appendix is dissected from the colon, and the sheath containing the appendix is removed from the abdomen of the patient. The procedure can be a NOTES procedure, using a natural orifice, or laparoscopic using one or more incisions created in the abdomen. The ligation and dissection can be performed within the abdomen, or after the appendix is pulled through one of the incisions, such that the ligation and/or dissection is carried out outside the abdomen.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: December 1, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Teo Heng Jimmy Yang
  • Patent number: 10813693
    Abstract: A shaft assembly for a microwave ablation applicator having a shaft assembly and an antenna assembly located within the shaft assembly is disclosed. The shaft assembly comprises an elongate shaft which extends from a first end to a second end thereof and an applicator tip mounted on the second end of the elongate shaft.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 27, 2020
    Assignee: Gyrus Medical Limited
    Inventors: Tudor Thomas, David Nicholas Williams, Lewis Jones
  • Patent number: 10758299
    Abstract: An electrode assembly (3) is provided for use in a resectoscope, the electrode assembly (3) comprising a pair of arms (4), and a tissue treatment element (9) depending from the arms. The arms (4) are pivotably mounted one to the other such that they are movable between a retracted position in which they lie alongside one another and a deployed position in which they diverge one from another. The electrode assembly (3) includes actuation means for moving the arms between their retracted and deployed positions. The tissue treatment element (9) is disposed at the distal end of each arm such that it is movable between at least two different operating positions.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: September 1, 2020
    Assignee: Gyrus Medical Limited
    Inventor: Tony Atwell
  • Patent number: 10758296
    Abstract: A surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle is described, the shaft and end effector being rotatable with respect to the housing, to allow different rotational orientations of the end effector to be attained without rotating the whole instrument. To provide for control over the degree of rotation, shaft rotation control elements are provided to give rotation or torsion control. The shaft rotation control elements may be located at several different longitudinal positions along the shaft. Alternatively, rotation control elements in the form of mutually co-operating stops may be provided elsewhere, such as in a rotatable shaft support member at the distal end of the handle. In other embodiments rotation control stops are provided on both elements, thus providing for effective rotation control, which has a high quality feel to the user.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: September 1, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10758294
    Abstract: An electrosurgical system includes an electrosurgical instrument with a pair of opposing first and second jaw members (2), (3). A first sealing electrode (9) is located on the first jaw member (2), while a second sealing electrode (10) is located on the second jaw member (3). One or both of the sealing electrodes are provided with electrically conductive stop members (12), the one or more stop members maintaining a predetermined spacing between the first and second sealing electrodes when the jaw members are in their closed position. One or more insulating members (14), (17), (19) are present to prevent the conductive stop members from causing an electrical short between the first and second sealing electrodes when the jaw members are in their closed position.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: September 1, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Lewis Meurig Jones
  • Patent number: 10758297
    Abstract: A surgical instrument has an end effector disposed on an elongate shaft end, the shaft projecting from a handle. The end effector grasps, cuts, and seals and/or coagulates tissue, and one of the operations is controlled by a rotatable drive shaft contained within the elongate shaft. The drive shaft moves longitudinally within the elongate shaft to move the end effector between a first and second condition. The instrument may have a further component such as a cutting blade arranged to move longitudinally within the drive shaft. The drive shaft is provided with apertures so as to reduce the surface area of the drive shaft and hence the friction between either the drive shaft and the elongate shaft and/or the drive shaft and the cutting blade, whilst at the same time providing channels through the drive shaft through which fluid can drain.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: September 1, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal