Patents by Inventor Marno NAGTEGAAL

Marno NAGTEGAAL 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: 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: 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
  • Patent number: 10751113
    Abstract: A surgical instrument has an end effector on the end of an elongate shaft extending from a handle. The end-effector has different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one operation is controlled by a switch on the handle proximal end upper surface. The switch is connected to the end-effector to deliver a current to a component in the end-effector. The electrical wire assemblies pass through respective pockets/chambers formed within the handle, an electrical connector contained within each chamber for connecting wires extending from electrodes on the end-effector to wires extending through the handle and on connecting to an electrosurgical generator. The pockets provision within which connectors are contained, one per pocket, prevents insulation damage to wires by connectors, as they are contained within the pockets. The pockets provision pockets side-by-side provides large separation between two connectors, so it is hard for liquid to short the connectors.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: August 25, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10743930
    Abstract: An improved surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector has different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a drive handle mechanism. The drive handle mechanism includes an actuator, a drive shaft and a spring assembly for transferring movement of the actuator to the drive shaft, which in turn controls the end effector. The drive handle mechanism limits the amount of force transferred from the drive handle mechanism to the end effector, preventing damage to the tissue. As the actuator is operated, the spring assembly transfers the movement of the actuator to the drive shaft and the end effector. At the same time, the spring assembly compresses to absorb some of the force applied. Such configuration prevents the tissue being unintentionally damaged by the end effector.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: August 18, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10653477
    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. In some embodiments, the end effector includes a blade assembly, the trigger mechanism being formed of a three pivot slider-crank mechanism arranged to drive the blade assembly longitudinally along a rotatable drive shaft contained within the elongate shaft. As such, the mechanism is configured so as to drive the blade assembly with enough force that the cutting blade is able to cut through tissue without the user needing to apply any additional force to the trigger, the me. Such an arrangement is particularly advantageous when the blade is being used to cut thick tissue.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: May 19, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10617465
    Abstract: An improved surgical instrument having an end-effector capable of several different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by handle that is moveable relative to instrument to move end effector between two conditions. Providing a simplified latching mechanism for this moveable handle, which latching mechanism is formed of single integrally formed component arranged to engage with handle to allow end effector to be retained in one condition, thus leaving user's hand free to perform other functions of instrument. Therefore, a user may use surgical instrument to grasp tissue between end effector by activating end effector using handle, then use latch mechanism to latch handle in the end effector activation position, allowing surgeon to remove his hand from handle and perform some other task.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: April 14, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Marno Nagtegaal, Lewis Meurig Jones
  • Patent number: 10568683
    Abstract: An arrangement where surgical instrument having shaft with end effector mounted thereon is provided with rotation wheel to allow user to rotate shaft during use into desired angular position. To allow compact and reliable mechanism the rotation wheel, outer edge of which is generally accessible at external surface of instrument, has internal space around axis of wheel within which is provided part of actuation mechanism for end effector. To allow rotation of actuation mechanism with end effector, part of actuation mechanism located within wheel rotationally mutually engages with inner surface of internal space within wheel, wherein rotation of wheel by user causes actuation mechanism to rotate, which in turn rotates shaft wherein end effector is mounted. Providing benefits allowing otherwise redundant space within rotation wheel to accommodate part of actuation mechanism for end effector, improving compactness of device, whilst still allowing rotation of end-effector and its corresponding actuation mechanism.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: February 25, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10537383
    Abstract: A surgical instrument has an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector grasps, cuts, and seals and/or coagulates tissue, and one of the operations is controlled by a trigger mechanism. The trigger mechanism has an actuator, drive shaft and flanged component for transferring movement of the actuator to the drive shaft whose movement controls the end effector. The actuator has a collar portion arranged to receive and retain the component. The component is free to rotate within the collar and has a keyhole-shaped arrangement, with a wider upper portion, and narrower lower portion to provide a sliding fit to the component main body. The component can be inserted into the wider upper portion, and then the main body of the component lowered into the narrower lower portion, with the flange of the component helping the component to be retained therein axially.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: January 21, 2020
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10517664
    Abstract: A surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of 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 blade assembly, the trigger mechanism being arranged to drive the blade assembly longitudinally within the elongate shaft. Specifically, the trigger mechanism is formed of a three pivot slider-crank mechanism, wherein one of the pivot points includes a component to which the proximal end of the blade assembly is connected. In this respect, the proximal end of the blade assembly has a distinctive profile corresponding to the internal profile of the component such that the blade can be easily connected to the component without the need for any further features and subsequently retained therein.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: December 31, 2019
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 10271892
    Abstract: An electrosurgical system for the treatment of tissue includes an electrosurgical instrument, a source for supplying ionizable gas to said electrosurgical instrument, an electrosurgical generator for supplying high frequency energy to the electrosurgical instrument, and a switch mechanism. The electrosurgical instrument includes one or more conduits and one or more electrodes connected to the electrosurgical generator. The electrosurgical system is movable between at least a first and a second arrangement. The first arrangement is such that one electrode produces a stream of ionized gas exiting one of the conduits, the ionizable gas being capable of the removal of tissue. The second arrangement is such that ionized gas is produced such that it is capable of the coagulation of tissue. The switch mechanism causes the electrosurgical instrument to move between the first and second arrangements.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: April 30, 2019
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Marno Nagtegaal, Wayne Williams, Robert Edward Taylor
  • Publication number: 20190038342
    Abstract: A substantially planar elongate cutting blade (70) for a bipolar surgical instrument (1) is disclosed. The cutting blade has first and second opposed edges and defining a longitudinal axis, and comprises a proximal end region which extends between the first and second edges over a first distance in a direction perpendicular to the longitudinal axis, and a distal end region defining a cutting surface which extends between the first and second edges over a second distance in a distance perpendicular to the longitudinal axis, the first distance being greater than the second distance. The first and second edges have respective portions that extend at first and second acute angles respectively with respect to the longitudinal axis, and the cutting surface extends transversely at a third angle with respect to the longitudinal axis, the third angle being not equal to the first or second angle.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 7, 2019
    Inventors: Marno Nagtegaal, Lewis Jones
  • Patent number: 10179025
    Abstract: An electrode assembly (17) is provided for use in a resectoscope, the electrode assembly (17) comprising an elongate shaft (33), at least one arm (33), first connection means (4) for connecting the arm to a source (1) of electrosurgical energy, and a tissue treatment element (26) at the end of the arm. The arm includes a suction lumen (34) extending from a proximal end to a distal end, the distal end of the suction lumen (34) terminating in the general region of the tissue treatment element (26), and the proximal end of the suction lumen including second connection means for connecting the suction lumen to a source of suction.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: January 15, 2019
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Anthony K. Atwell, Marno Nagtegaal
  • Publication number: 20180360524
    Abstract: An electrode assembly is provided for use in a resectoscope, the electrode assembly comprising an elongate shaft, at least one arm, first connection means for connecting the arm to a source of electrosurgical energy, and a tissue treatment element at the end of the arm. The arm includes a suction lumen extending from a proximal end to a distal end, the distal end of the suction lumen terminating in the general region of the tissue treatment element, and the proximal end of the suction lumen including second connection means for connecting the suction lumen to a source of suction.
    Type: Application
    Filed: August 24, 2018
    Publication date: December 20, 2018
    Applicant: GYRUS MEDICAL LIMITED
    Inventors: Anthony K. ATWELL, Marno NAGTEGAAL
  • Publication number: 20180318001
    Abstract: An electrode (1) for a jawed electrosurgical instrument has an elongate tissue-contacting surface (2), and a connection portion (8) comprising a crimp portion (12) and a support portion (9). The crimp portion (12) comprises a plate (10) which can be folded over the end of a lead (11) to form an electrical connection between the lead and the electrode. The support portion (9) forms an electrical connection between the crimp portion and the electrode, and is shaped and/or oriented such that the crimp portion (12) lies directly underneath the tissue contacting surface (2). The position of the connection portion (8) allows for it, including the crimp portion (12), to be encapsulated within an overmoulded polymer component (16).
    Type: Application
    Filed: May 4, 2017
    Publication date: November 8, 2018
    Inventor: Marno Nagtegaal
  • Publication number: 20170196626
    Abstract: An arrangement where surgical instrument having shaft with end effector mounted thereon is provided with rotation wheel to allow user to rotate shaft during use into desired angular position. To allow compact and reliable mechanism the rotation wheel, outer edge of which is generally accessible at external surface of instrument, has internal space around axis of wheel within which is provided part of actuation mechanism for end effector. To allow rotation of actuation mechanism with end effector, part of actuation mechanism located within wheel rotationally mutually engages with inner surface of internal space within wheel, wherein rotation of wheel by user causes actuation mechanism to rotate, which in turn rotates shaft wherein end effector is mounted. Providing benefits allowing otherwise redundant space within rotation wheel to accommodate part of actuation mechanism for end effector, improving compactness of device, whilst still allowing rotation of end-effector and its corresponding actuation mechanism.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Marno NAGTEGAAL
  • Publication number: 20170196629
    Abstract: A surgical instrument having an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of 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 blade assembly, the trigger mechanism being arranged to drive the blade assembly longitudinally within the elongate shaft. Specifically, the trigger mechanism is formed of a three pivot slider-crank mechanism, wherein one of the pivot points includes a component to which the proximal end of the blade assembly is connected. In this respect, the proximal end of the blade assembly has a distinctive profile corresponding to the internal profile of the component such that the blade can be easily connected to the component without the need for any further features and subsequently retained therein.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Marno NAGTEGAAL
  • Publication number: 20170196632
    Abstract: A surgical instrument has an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector is capable of 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 blade assembly, the trigger mechanism being arranged to drive the blade assembly longitudinally within the elongate shaft. Specifically, the trigger mechanism is formed of a three pivot slider-crank mechanism comprising a component to which the blade assembly is connected. The component is contained within a housing, wherein the component is free to rotate concentrically within the housing, which in turn rotates the blade assembly. Therefore, the component and the blade assembly are free to rotate without interfering with the operation of the trigger mechanism. The blade assembly is able to move both rotationally and longitudinally.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Marno NAGTEGAAL
  • Publication number: 20170196624
    Abstract: An improved surgical instrument having several improvements and advantages over the prior art. Surgical instrument has an end-effector capable of several different operations, including grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by handle that is moveable relative to instrument to move end effector between two conditions. Providing a simplified latching mechanism for this moveable handle, which latching mechanism is formed of single integrally formed component arranged to engage with handle to allow end effector to be retained in one condition, thus leaving user's hand free to perform other functions of instrument. Therefore, a user may use surgical instrument to grasp tissue between end effector by activating end effector using handle, then use latch mechanism to latch handle in the end effector activation position, allowing surgeon to remove his hand from handle and perform some other task.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventors: Marno NAGTEGAAL, Lewis Meurig JONES
  • Publication number: 20170196627
    Abstract: A surgical instrument has an end effector mounted on the end of an elongate shaft extending from a handle. The end-effector grasps, cuts, and seals and/or coagulates tissue, and one of the operations is controlled by a trigger mechanism. The trigger mechanism has an actuator, drive shaft and flanged component for transferring movement of the actuator to the drive shaft whose movement controls the end effector. The actuator has a collar portion arranged to receive and retain the component. The component is free to rotate within the collar and has a keyhole-shaped arrangement, with a wider upper portion, and narrower lower portion to provide a sliding fit to the component main body. The component can be inserted into the wider upper portion, and then the main body of the component lowered into the narrower lower portion, with the flange of the component helping the component to be retained therein axially.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Marno NAGTEGAAL
  • Publication number: 20170196628
    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. In some embodiments, the end effector includes a blade assembly, the trigger mechanism being formed of a three pivot slider-crank mechanism arranged to drive the blade assembly longitudinally along a rotatable drive shaft contained within the elongate shaft. As such, the mechanism is configured so as to drive the blade assembly with enough force that the cutting blade is able to cut through tissue without the user needing to apply any additional force to the trigger, the me. Such an arrangement is particularly advantageous when the blade is being used to cut thick tissue.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 13, 2017
    Applicant: GYRUS MEDICAL LIMITED
    Inventor: Marno NAGTEGAAL