Combined Cutting-coagulation Patents (Class 606/37)
  • Patent number: 11015823
    Abstract: An electronic apparatus capable of air pollution reduction includes an operating tool and an airflow device. The airflow device is located adjacent to the operating tool, and has a shell with one or more opening holes distributed thereon for air to flow in or out.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: May 25, 2021
    Assignee: NATIONAL CHENG KUNG UNIVERSITY
    Inventors: Ming-Yeng Lin, Hong-Yiou Lin, How-Ran Guo, Huann-Shyang Lin
  • Patent number: 10932854
    Abstract: Electrosurgical forceps in which one or more pairs of non-resonant unbalanced lossy transmission line structures are arranged on the inner surfaces of the jaws of the forceps provide both (i) active and return electrodes for a radiofrequency (RF) signal, and (ii) lossy structures for delivering a microwave signal into biological tissue in conjunction with a mechanical gripping arrangement for applying pressure to material held within the jaws. The location of the pairs of transmission lines on the jaws of the forceps and the selection of the material of the jaws is arranged to ensure that any biological tissue gripped by the jaws become the propagation medium for the RF signal and the medium into which the microwave signal is lost.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: March 2, 2021
    Assignee: CREO MEDICAL LIMITED
    Inventors: Christopher Paul Hancock, Malcolm White, Sandra May Bernadette Holmes, Brian Saunders
  • Patent number: 10912608
    Abstract: A device is designed to remove blockages in a lumen such as a thrombus, blood clot, or embolus. The device comprises a manipulating wire and a structure that can conduct electrical current to a lumen blockage. The electrical current is preferably in radio frequency (RF). The RF electric current in the blockage can excite the contents such as proteins of the blockage, so that cross-linking density and interfacial adsorption of the entire blockage is enhanced. The enhanced cross-linking density can result in increased fracture resistance of the blockage such that fracture of the blockage during the removal process is unlikely. The enhanced interfacial adsorption results in increased interfacial fracture resistance between the device and blockage so that the blockage can be securely captured during the removal process without using radially applied force.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: February 9, 2021
    Assignee: The Hong Kong University of Science and Technology
    Inventors: David Chuen Chun Lam, Chi Hang Chon, John Ching Kwong Kwok, Matthew Ming Fai Yuen, Zhen Qin, Alexander Ka Ngai Lam
  • Patent number: 10893900
    Abstract: An electrosurgical device comprising: (a) forceps including: (i) a first working arm and (ii) a second working arm; (b) a blade electrode; wherein the electrosurgical device is capable of being switched between a first electrical configuration so that the electrosurgical device delivers a first therapy current through the first working arm, the second working arm, or both, and a second electrical configuration so that the electrosurgical device delivers a second therapy current through the blade electrode; and wherein the first working arm and the second working arm of the forceps are immobilized in the second electrical configuration so that both the forceps and the first therapy current are disabled.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: January 19, 2021
    Assignee: Gyrus Acmi, Inc.
    Inventors: Ryan Windgassen, Theodore Blus
  • Patent number: 10819261
    Abstract: Electric power generator protection is secured by detecting wiring errors to an intelligent electronic device using terminal third voltages at the terminal (VT3) and third harmonic voltages at the neutral (VN3). When an angle between VT3 and VN3 is outside of an acceptable range, a wiring defect is detected, and certain protective operations are blocked. An alarm may be generated, facilitating personnel to identify and rectify the wiring defect. Wiring defects may further be detected when a torque calculated using VT3 and VN3 exceeds a predetermined error threshold. Security of protection elements is increased by detection of wiring defects that may have resulted in misoperation of the protection elements.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: October 27, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Ritwik Chowdhury, Dale S. Finney, Normann Fischer
  • Patent number: 10799913
    Abstract: A battery-powered, modular surgical device comprising an electrically powered surgical instrument that requires a pre-determined minimum amount of electrical energy to complete a surgical procedure, and a power module assembly that has a battery that powers the surgical instrument and has a current state of electrical charge, and a control circuit that is electrically coupled to the battery and the surgical instrument and has a memory and a microprocessor. The microprocessor determines the current state of electrical charge of the battery, compares the current state of electrical charge to the pre-determined minimum amount of electrical energy, permits the battery to discharge if the current state of electrical charge is above the pre-determined minimum amount of electrical energy, and maintains the battery in a non-discharge state if the current state of electrical charge is below the pre-determined minimum amount of electrical energy.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: October 13, 2020
    Assignee: COVIDIEN LP
    Inventors: Thomas O. Bales, Jr., Derek D. Deville, Kevin W. Smith, Matthew A. Palmer
  • Patent number: 10786242
    Abstract: A shapeable passer for surgical cable or suture is made from a flexible tubular extrusion which includes at least one lumen arranged to receive the leading end of a surgical cable or suture, and at least one lumen arranged to contain a malleable stiffener element. The lumens and stiffener element are arranged parallel to each other and lengthwise along longitudinal axis of the extrusion, such that the malleable stiffener element enables the malleable portion of the passer to be shaped as desired. The leading ends of the lumens are preferably sealed, capped or tipped, while the trailing ends of the lumens arranged to receive the surgical cables or sutures are preferably flared to facilitate manual insertion of the cables or sutures.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 29, 2020
    Assignee: KINAMED, INC.
    Inventors: William R. Pratt, Vineet K. Sarin
  • Patent number: 10729499
    Abstract: An ablation planning system includes a user interface (104) configured to permit selection of inputs for planning an ablation procedure. The user interface is further configured to incorporate selection of ablation probes and one or more combinations of ablation powers, durations or parameters applicable to selected probes in the inputs to size the ablation volumes. The user interface includes a display for rendering internal images of a patient, the display permitting visualizations of the ablation volumes for different entry points on the internal images. An optimization engine (106) is coupled to the user interface to receive the inputs and is configured to output an optimized therapy plan which includes spatial ablation locations and temporal information for ablation so that collateral damage is reduced, coverage area is maximized and critical structures are avoided in a planned target volume.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: August 4, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Xin Liu, Sandeep Delal, Jochen Kruecker
  • Patent number: 10716615
    Abstract: An end effector for a surgical instrument is disclosed. The end effector includes an ultrasonic blade and a jaw member including an asymmetric electrode comprising a first electrode and a second electrode. The first electrode defines a first width and the second electrode defines a second width. The first width is not equal to the second width. A first gap is defined between the first electrode and the ultrasonic blade and a second gap is defined between the second electrode and the ultrasonic blade. The first gap is not equal to the second gap.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 21, 2020
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Jeffrey D. Messerly
  • Patent number: 10603105
    Abstract: Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter for use in cardiac mapping and/or ablation. The catheter may include an elongate catheter shaft having a distal ablation electrode region capable of ablating tissue. An electrode assembly may be coupled to the distal ablation electrode region. The electrode assembly may include a flexible circuit having one or more electrodes disposed thereon.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: March 31, 2020
    Assignee: Boston Scientific Scimed Inc
    Inventors: Desmond Cheung, John C. Potosky, Andrew T. Marecki, Isaac J. Kim, Mark D. Mirigian
  • Patent number: 10548626
    Abstract: A medical device configured to manipulate tissue within a body of a subject may include an elongate shaft having a proximal end and a distal end. The distal end of the shaft may be configured to be inserted into the body. The device may include end effectors coupled to the distal end of the elongate shaft. The end effectors may include a needle pivotably coupled to the shaft and configured to inject a fluid into the tissue. The end effectors may also include an articulating arm pivotably coupled to the shaft, and a cutting wire extending between the needle and the arm.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: February 4, 2020
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Briana Jean Moretti, Matthew Robert Jagelski, John B. Golden, Melissa Joan Horton, Jennifer Kenyon Saunders, Erin Zinkus, Gary Paul Pirani, Ellen Asako Kaplan
  • Patent number: 10524859
    Abstract: According to various embodiments, systems, devices and methods for modulating targeted nerve fibers (e.g., hepatic neuromodulation) or other tissue are provided. Systems, devices and methods for cooling energy delivery members are also provided. The systems may be configured to access tortuous anatomy of or adjacent hepatic vasculature. The systems may be configured to target nerves surrounding (e.g., within adventitia of or within perivascular space of) an artery or other blood vessel, such as the common hepatic artery.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: January 7, 2020
    Assignee: Metavention, Inc.
    Inventors: Anthony Ciro Vrba, Scott Raymond Smith, Bobak Robert Azamian, James G. Hansen
  • Patent number: 10456189
    Abstract: A device for generating RF power for an electrosurgical instrument is provided that includes a controller programmed to generate an electrical signal having an oscillating waveform and to modulate the oscillating waveform between a plurality of ON and OFF states to create discrete packets of the oscillating waveform in the plurality of the ON states. The device further has an amplifier in communication with the electrical waveform that amplifies the waveform to create an output signal and an electrosurgical connector configured to receive an electrosurgical instrument and to pass the electrical signal to the electrosurgical instrument.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: October 29, 2019
    Inventors: Alan G. Ellman, John Pikramenos, Alfredo Micalizzi
  • Patent number: 10292762
    Abstract: An electrosurgical apparatus having a HF power source providing HF energy for electrosurgery and a circuitry to control application of said HF energy to an electrode end used in electrosurgically operating on a patient is characterized in that said circuitry is adapted to apply in a dissecting mode said HF energy for dissecting to an electrode end automatically in the form of pulses such that the pulses automatically have a defined length. This device can be used for exploration of the bladder and en bloc radical removal of a large tumor using the active resection electrode loop of an optic resectoscope such that the bladder wall layers below the tumor base within the intact tissue margin are prepared using step-by-step coagulation and dissection of the tumor nutrient vessels and of the interlayer tissue fibers performed by impulsive turns-on of the electrosurgical apparatus in-use in the monopolar dissection mode.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 21, 2019
    Inventor: Igor Masansky
  • Patent number: 10293061
    Abstract: For Endoscopic Mucosal Resection (EMR), particularly for the esophagus and stomach, a kit includes two endoscopes that are used alternatingly to separate chromoendoscopy for staining of intestinal metaplastic mucosa, injecting solution to raise diseased mucosa, snare polypectomy, and wound clipping from cap-assisted suction and ligation of the mucosa, for making these procedures more focused and readily accomplished, with less likelihood of bleeding and perforation.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 21, 2019
    Inventor: Shiu Kum Lam
  • Patent number: 10245096
    Abstract: An electrosurgical device is adapted for use through a port and within a body cavity. The device includes a gas supply supplying gas to a distal tip and a valve to regular such supply, and an electric supply for supplying electricity to the distal tip. A pressure relief system is provided to regulate an outflow of gas from within the body cavity to prevent exceeding a predetermined pressure. The inflow of the gas through the valve and outflow of gas through the pressure relief system may occur simultaneously.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: April 2, 2019
    Assignee: COVIDIEN LP
    Inventor: Amit Trivedi
  • Patent number: 10226265
    Abstract: Described here are devices and methods for forming shock waves. The devices may comprise an axially extending elongate member. A first electrode pair may comprise a first electrode and a second electrode. The first electrode pair may be provided on the elongate member and positioned within a conductive fluid. A controller may be coupled to the first electrode pair. The controller may be configured to deliver a series of individual pulses to the first electrode pair, where each pulse creates a shock wave. The controller may cause current to flow through the electrode pair in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: March 12, 2019
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: Vincent Wenchung Ku, Camilo Perez Saaibi
  • Patent number: 10206737
    Abstract: A surgical instrument includes a housing having an elongated shaft that extends therefrom and a handle pivotable relative thereto. An end effector assembly is attached to a distal end of the shaft and includes first and second jaw members. The first jaw member is pivotably attached to a distal end of the shaft and the second jaw member extends along a longitudinal axis defined therethrough and fixed to the distal end of the shaft by a living hinge. The first jaw member, upon actuation of the handle, is movable relative to the second jaw member between spaced-apart position, an approximated position for grasping tissue, and a second position for over-compressing tissue grasped between jaw members. A knife is disposed within a channel defined within the second jaw member and is exposed to cut tissue when the first jaw member over-travels to over-compress the second jaw member.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: February 19, 2019
    Assignee: COVIDIEN LP
    Inventor: Gary M. Couture
  • Patent number: 10172664
    Abstract: A method for controlling an electrosurgical electrode of a medical device includes providing an electrosurgical tissue cutting electrode having an arcuate electrode portion; delivering energy from an RF generator to the electrosurgical electrode, said RF generator including an RF amplifier; monitoring an electrical characteristic associated with said electrosurgical electrode; and establishing a desired RF power output and a desired RF duty cycle at said RF generator by adjusting DC input voltage applied to an output stage of said RF amplifier based on said monitoring to effect tissue cutting by the arcuate electrode portion.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: January 8, 2019
    Assignee: SENORX, INC.
    Inventors: Derek Daw, James Huntington Dabney
  • Patent number: 10080609
    Abstract: An electrosurgical apparatus having a feed structure comprising a radiofrequency (RF) channel for conveying RF electromagnetic (EM) radiation from an RF signal generator to a probe and a microwave channel for conveying microwave EM radiation from a microwave signal generator to the probe, wherein the RF channel and microwave channel comprise physically separate signal pathways, wherein the feed structure includes a combining circuit having an input connected to the signal pathway on the RF channel, another input connected to the signal pathway on the microwave channel, and an output connected to a common signal pathway for conveying the RE EM radiation and EM radiation separately or simultaneously to the probe, and wherein the microwave channel includes a waveguide isolator connected to isolate the signal pathway on the microwave channel from the RF EM radiation.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: September 25, 2018
    Assignee: CREO MEDICAL LIMITED
    Inventors: Christopher Paul Hancock, Malcolm White, Francis Amoah, Nuwan Dharmisiri
  • Patent number: 10045810
    Abstract: An HF surgical appliance comprising an HF generator having an output circuit, which contains an output transformer and has an output impedance. Output terminals, to which an HF surgical instrument can be connected, are provided, said instrument supplying a high-frequency current with a specific frequency into tissue to treat the same. An additional output circuit containing an additional transformer, which is connected between the output circuit and the output terminals to reduce the output impedance is also provided. In this way, the HF surgical appliance can be operated with a high power output even on loads having low impedance.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: August 14, 2018
    Assignee: ERBE ELEKTROMEDIZIN GMBH
    Inventors: Heiko Schall, Erich Werner, Marc Kegreiss, Jürgen Beller
  • Patent number: 9980768
    Abstract: To achieve a safe transition from the ignition of a plasma in incision mode to the combustion of the plasma during a cutting mode, an electromedical device to supply an instrument with electrical power is equipped with an ignition recognition mechanism formed by a sensor device. This ignition recognition mechanism switches the HF generator provided in the device from an incision operating mode to a cutting operating mode as soon as ignition is recognized. The switching is brought about by the switching of an HF modulation from a low crest factor in the incision operating mode to a high crest factor in the cutting operating mode.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: May 29, 2018
    Assignee: ERBE ELEKTROMEDIZIN GMBH
    Inventor: Erich Werner
  • Patent number: 9861429
    Abstract: A surgical instrument includes a housing having an elongated shaft that extends therefrom and a handle pivotable relative thereto. An end effector assembly is attached to a distal end of the shaft and includes first and second jaw members. The first jaw member is pivotably attached to a distal end of the shaft and the second jaw member extends along a longitudinal axis defined therethrough and fixed to the distal end of the shaft by a living hinge. The first jaw member, upon actuation of the handle, is movable relative to the second jaw member between spaced-apart position, an approximated position for grasping tissue, and a second position for over-compressing tissue grasped between jaw members. A knife is disposed within a channel defined within the second jaw member and is exposed to cut tissue when the first jaw member over-travels to over-compress the second jaw member.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: January 9, 2018
    Assignee: COVIDIEN LP
    Inventor: Gary M. Couture
  • Patent number: 9839469
    Abstract: An electrosurgical generator is presented including a radio frequency (RF) amplifier coupled to an electrical energy source and configured to generate electrosurgical energy, the RF amplifier including an inverter configured to convert a direct current (DC) to an alternating current (AC), and a plurality of sensors configured to sense voltage and current of the generated electrosurgical energy. The electrosurgical generator further includes a controller coupled to the RF amplifier and the plurality of sensors. The electrosurgical may be further configured to determine a power level based on the sensed voltage and the sensed current, determine an efficiency of the electrosurgical generator, and insert a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: December 12, 2017
    Assignee: COVIDIEN LP
    Inventors: James A. Gilbert, Mark A. Johnston, Aaron Mattmiller, Joshua H. Johnson
  • Patent number: 9820797
    Abstract: A cryosurgery system for application of medical-grade liquid nitrogen to a treatment area via a small, low pressure, open tipped catheter. The system includes a console, including a touch panel computer, a cryogen module, a suction module and an electronics module, and a disposable spray kit. Features include optional low cryogen flow setting to reduce the cryogen flow rate by 50%, improved cryogen flow consistency reducing pressure pulses and peaks, an integrated suction pump for improved consistency and self-checks, specified vent tube areas and corresponding maximum expected pressures during cryospray procedure; optional pressure sensing capability to monitor pressure during a treatment, and novel catheter designs of multilayer and flexible construction providing a variety of spray patterns.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: November 21, 2017
    Assignee: CSA Medical, Inc.
    Inventors: Ron Burr, Rafael Cordero, Marc Davidson, Wendelin Cherise Maners, Janel Petrilli
  • Patent number: 9814481
    Abstract: Unitary endoscopic vessel harvesting devices are disclosed. In some embodiments, such devices may comprise an elongated body having a proximal end and a distal end. A conical tip may be disposed at the distal end of the elongated body. In addition, the surgical instrument may include one or more surgical instruments moveable in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximally of a distal end of the tip to an advanced position toward the distal end of the tip to seal and cut a blood vessel.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: November 14, 2017
    Assignee: Saphena Medical, Inc.
    Inventors: Mark J. Orphanos, Michael Glennon
  • Patent number: 9770283
    Abstract: A method of improving efficiency of an electrosurgical generator is presented, the method including controlling an output of an electrosurgical generator by converting a direct current (DC) to an alternating current (AC) using an inverter, and sensing a current and a voltage at an output of the inverter. The method further includes the steps of determining a power level based on the sensed voltage and the sensed current, determining an efficiency of the electrosurgical generator, and inserting a predetermined integer number of off cycles when the efficiency of the electrosurgical generator reaches a threshold power efficiency.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: September 26, 2017
    Assignee: COVIDIEN LP
    Inventors: James A. Gilbert, Mark A. Johnston, Aaron Mattmiller, Joshua H. Johnson
  • Patent number: 9746548
    Abstract: A multi-beam LIDAR optical system, that in one example includes a plurality of single mode optical fibers configured to transmit and receive light beams, and a plurality of lenses configured to collimate and focus the light beams between the plurality of single mode optical fibers and an entrance pupil of the system, wherein the system is configured to transmit and receive the light beams over an angular field of view of at least 5°.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: August 29, 2017
    Assignee: RAYTHEON CANADA LIMITED
    Inventor: Christopher Jacob Reimer
  • Patent number: 9730751
    Abstract: Herein disclosed are dual-mode electrosurgical devices designed to function in a first mode in which high-density RF energy is used to cut or vaporize tissue, and then a second mode in which lower-density RF energy desiccates tissue to produce hemostasis, as well as methods of performing electrosurgery using same. Devices formed in accordance with the principles of this invention may be used for any surgical procedure in which highly vascular tissue is cut electrosurgically in a dry or semi-dry field, examples of which include tonsillectomy, liver resection, and cosmetic procedures such as breast augmentation, breast reduction, breast mastopexy, and abdominoplasty.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: August 15, 2017
    Assignee: ElectroMedical Associates, LLC
    Inventors: Robert A. Van Wyk, Yuval Carmel, Anatoly Shkvarunets
  • Patent number: 9700371
    Abstract: An electrosurgical system is provided for the treatment of tissue, the system comprising an electrosurgical generator (1) and an instrument (3) comprising an instrument shaft (10) having a longitudinal axis, and an electrode assembly (12) at one end of the shaft. The electrode assembly (12) comprises a first tissue treatment electrode (11), a second tissue treatment electrode (14), and first and second return electrodes (24, 25) electrically insulated from the first and second tissue treatment electrodes by means of insulation members (12, 15). The first and second tissue treatment electrodes (11, 14) each have an exposed surface for treating tissue, the exposed surface of the first tissue treatment electrode (11) being such as to treat tissue disposed on the longitudinal axis, and the exposed surface of the second tissue treatment electrode (14) being such as to treat tissue disposed laterally of the longitudinal axis.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 11, 2017
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Robert J. Brewer, Robert E. Gadsden, Robert C. Humble, Michael David Newton
  • Patent number: 9597140
    Abstract: A device, system and method for temperature-based lesion formation assessment and mapping functionality using an accessory usable with an over-the-wire balloon catheter. The device may include a first annular element, a plurality of wires coupled to the first annular element, and a second annular element, the plurality of wires passing from the first annular element through the second annular element and into an elongate wire conduit coupled to the second annular element. At least one of the plurality of wires may include at least one temperature sensor and/or at least one mapping electrode. The first annular element coupled to an outer surface of a sheath. As a balloon catheter is advanced out of the sheath lumen, the distal tip of the catheter engages the second annular element and pushes the wires out of the sheath lumen, everting them over the balloon of the catheter.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: March 21, 2017
    Assignee: Medtronic CryoCath LP
    Inventor: Teresa Mihalik
  • Patent number: 9585710
    Abstract: In an electro-surgical high-frequency generator, the signal frequency or the modulation frequency or a clock frequency or any combination thereof are modulated using a low-frequency modulation signal in such a way that the spectra thereof are widened. This results in a reduction of interference on peripheral devices.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: March 7, 2017
    Assignee: Erbe Elektromedizin GmbH
    Inventor: Peter Selig
  • Patent number: 9517104
    Abstract: A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: December 13, 2016
    Assignee: SenoRx, Inc.
    Inventors: Derek Daw, James Huntington Dabney
  • Patent number: 9498281
    Abstract: A surgical apparatus is provided. The surgical apparatus includes a housing that supports a shaft assembly. The shaft assembly defines a longitudinal axis therethrough and includes coaxially aligned outer and inner shaft members. The inner shaft member is movable within the outer shaft member. An end effector includes a pair of jaw members disposed at a distal end of the outer shaft. At least one of the jaw members is pivotably coupled to the outer shaft and is movable between open and clamping configurations for grasping tissue. The inner shaft contacts a proximal end of the moveable jaw member to maintain the movable jaw member in the open configuration and is slidable against the movable jaw member to move the moveable jaw member between the open configuration and clamping configuration.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: November 22, 2016
    Assignee: Covidien LP
    Inventor: Stephen M. Kendrick
  • Patent number: 9468485
    Abstract: A method and system for creating permanent lesions in an area of target tissue, such as tissue at or proximate a junction between a pulmonary vein and the left atrium. The method may generally include positioning a medical device in contact with a pulmonary vein ostium, ablating the tissue, and recording a plurality of temperature measurements from one or more of three temperature sensors. The device may include an occlusion element in communication with a coolant source, a first sensor located distal of the occlusion element, a second sensor located proximal of the occlusion element, and a third sensor located in the occlusion element. One or more temperature measurements may be compared with each other to assess occlusion of the pulmonary vein, and/or may be compared with a set of reference temperatures to predict a real-time temperature within the target tissue.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: October 18, 2016
    Assignee: Medtronic CryoCath LP
    Inventors: Dan Wittenberger, Jean-Pierre Lalonde, Stephen A. Howard
  • Patent number: 9439716
    Abstract: An electrosurgical device that can be used to remove pedunculated tissue structures such as polyps and certain uterine fibroids includes bipolar surface electrodes and a bipolar snare. The device includes a probe having a proximal end and a distal end, bipolar surface electrodes adjacent to the distal end of the probe, and a bipolar snare extending distally from the distal end of the probe and including first and second snare electrodes. The bipolar surface electrodes are separated from each other by a gap and extend over a portion of the distal end of the probe. Providing both a bipolar snare and bipolar surface electrodes advantageously reduces thermal spread from occurring (compared to the use of a monopolar snare) when using the snare to excise the tissue. The bipolar surface electrodes can be used to coagulate the point of excision.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: September 13, 2016
    Assignee: GYRUS ACMI, INC.
    Inventors: Kester Batchelor, Tracey Dobbs, Jyue Boon Lim, Nikhil Murdeshwar, Tsuyoshi Hayashida, Richard Curtis
  • Patent number: 9427280
    Abstract: Herein disclosed are dual-mode electrosurgical devices designed to function in a first mode in which high-density RF energy is used to cut or vaporize tissue, and then a second mode in which lower-density RF energy desiccates tissue to produce hemostasis, as well as methods of performing electrosurgery using same. Devices formed in accordance with the principles of this invention may be used for any surgical procedure in which highly vascular tissue is cut electrosurgically in a dry or semi-dry field, examples of which include tonsillectomy, liver resection, and cosmetic procedures such as breast augmentation, breast reduction, breast mastopexy, and abdominoplasty.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: August 30, 2016
    Assignee: ElectroMedical Associates, LLC
    Inventors: Robert A. Van Wyk, Yuval Carmel, Anatoly Shkvarunets
  • Patent number: 9301796
    Abstract: An improved cryosurgical system for application of medical-grade liquid nitrogen to a treatment area via a small, low pressure, open tipped catheter. The system includes a console, including a touch panel computer, a cryogen module, a suction module and an electronics module, all packaged in a mobile cart, and a disposable spray kit. Improved features include optional low cryogen flow setting to reduce the cryogen flow rate by 50%, improved cryogen flow consistency reducing pressure pulses and peaks (improved sensors, control systems, and control algorithms), an integrated suction pump for improved consistency and self-checks, specified vent tube areas and corresponding maximum expected pressures during cryospray procedure; optional pressure sensing capability to monitor pressure during a treatment, and improved catheter design.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: April 5, 2016
    Assignee: CSA MEDICAL, INC.
    Inventors: Ron Burr, Janel Petrilli
  • Patent number: 9198733
    Abstract: The present invention provides systems, methods, and devices for electroporation-based therapies (EBTs). Embodiments provide patient-specific treatment protocols derived by the numerical modeling of 3D reconstructions of target tissue from images taken of the tissue, and optionally accounting for one or more of physical constraints or dynamic tissue properties. The present invention further relates to systems, methods, and devices for delivering bipolar electric pulses for irreversible electroporation exhibiting reduced or no damage to tissue typically associated with an EBT-induced excessive charge delivered to the tissue.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: December 1, 2015
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Robert E. Neal, II, Paulo A. Garcia, Rafael V. Davalos, John H. Rossmeisl, John L. Robertson
  • Patent number: 9192423
    Abstract: A high frequency surgery generator having an output circuit and a power oscillator for generating an HF output voltage. The power oscillator is designed to excite the output circuit at a first excitation frequency, which corresponds to a resonant frequency of the output circuit, in a first operating mode and to excite the output circuit at a second excitation frequency which differs from the first excitation frequency, which does not correspond to the resonant frequency of the output circuit, in a second operating mode.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: November 24, 2015
    Assignee: ERBE ELEKTROMEDIZIN GMBH
    Inventors: Heiko Schall, Martin Fritz
  • Patent number: 9144455
    Abstract: A surgical system and associated method for sealing the passageway of a fluid-carrying vessel with a diameter up to 5 millimeters comprises an electrosurgical generator capable of delivering electrosurgical power, a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer electrosurgical power from the electrosurgical generator to a pair of end effectors disposed at a distal end of the surgical instrument. The system also includes a power control circuit for controlling the delivery of radio frequency energy to the vessel through the end effectors, wherein the delivery of the radio frequency energy to the vessel comprises, raising the output current to a range below 1.75 Amperes RMS and the output voltage to a range below 135 Volts RMS. Radio frequency energy is applied to the vessel for a period of time while the power is held approximately constant.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: September 29, 2015
    Assignee: JUST RIGHT SURGICAL, LLC
    Inventors: Jenifer Kennedy, Dale Schmaltz, David Schechter, Joel Helfer, David Ross
  • Patent number: 9113888
    Abstract: A method for performing an electrosurgical procedure at a surgical site on a patient, the method including the steps of providing a current restricting circuit operatively coupled between a source of electro surgical energy and an electrode, the current restricting circuit including: a switch configured to direct the flow of electrosurgical energy; and a plurality of current restrictive devices arranged in an H-Bridge arrangement, wherein the switch is disposed between adjacent current restrictive devices of the plurality of current restrictive devices; restricting the flow of electrosurgical energy wherein the current restricting circuit is configured to restrict a flow of electrosurgical energy when the switch is in a first position; enabling the flow of electrosurgical energy when the switch is in a second position; and dynamically controlling the electrosurgical energy delivered to the electrode with the current restricting circuit.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: August 25, 2015
    Assignee: Covidien AG
    Inventors: James H. Orszulak, James W. McPherson
  • Patent number: 9113045
    Abstract: An electronic endoscopic apparatus includes an endoscopic scope, an imaging device provided in the endoscopic scope, a signal processing unit processing a captured image signal obtained by the imaging device to generate an observation image, a monitor device displaying the observation image, and a control unit controlling the signal processing unit to generate a high definition observation image and a high sensitivity observation image as the observation image, in which the control unit makes the signal processing unit generate the high sensitivity observation image at the time of screening the inside of the biological body, and generate the high definition observation image at the time of precise inspecting for an interest area in the body.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 18, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Ryou Kitano
  • Patent number: 9084608
    Abstract: A surgical instrument includes an end effector assembly having jaw members movable between spaced-apart, first approximated, and second approximated positions. A knife is selectively movable relative to the end effector assembly between a retracted position, a first extended position, and a second extended position. A trigger is selectively actuatable between a un-actuated position, a first actuated position, and a second actuated position for moving the knife between its respective positions. A control member prevents movement of the trigger when the jaw members are disposed in the spaced-apart position, permits movement of the trigger to the first actuated position but prevents movement beyond the first actuated position when the jaw members are disposed in the first approximated position, and permits movement of the trigger to the second actuated position but prevents movement beyond the second actuated position when the jaw members are disposed in the second approximated position.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: July 21, 2015
    Assignee: Covidien LP
    Inventors: Eric R. Larson, Russell D. Hempstead, John J. Kappus
  • Patent number: 9066747
    Abstract: An ultrasonic surgical instrument including an ultrasonically actuated blade or end effector having a treatment portion. The blade can define a central axis and at least one axis which is transverse to the central axis, wherein the transverse axis can lie within a plane which is perpendicular, or normal, to the longitudinal axis and can define a cross-section of the treatment portion. Such a cross-section can include a central portion and a step extending from the central portion, wherein the central portion can comprise a width, and wherein the step can comprise a cutting edge. In at least one embodiment, the cutting edge can be defined by first and second surfaces which define an angle therebetween. In various embodiments, the position of the cutting edge and/or the angle between the cutting edge surfaces can be selected in order to balance the blade with respect to the transverse axis.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: June 30, 2015
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventor: Galen C. Robertson
  • Publication number: 20150141980
    Abstract: The present disclosure is directed to a forceps having an end effector assembly including first and second jaw members. At least one of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. Each jaw member includes an electrically-conductive tissue-contacting surface adapted to connect to a source of energy to treat tissue grasped between the jaw members. A suction system is disposed proximate the first and second jaw members and is configured to apply suction to a surgical site upon activation thereof.
    Type: Application
    Filed: October 23, 2014
    Publication date: May 21, 2015
    Inventors: AMARSINH D. JADHAV, NIKHIL P. MANKAR
  • Publication number: 20150094711
    Abstract: Disclosed herein is a cutting and/or coagulating device that includes a cutting and/or coagulating member and a radio frequency generator such that an output of the radio frequency generator is connected to the cutting and/or coagulating member. The cutting and/or coagulating member is electrically resonant at the frequency of the radio frequency generator. Further, the cutting and/or coagulating member may include a resistance wire which is configured to directly contact a target cutting material. The cutting and/or coagulating member may be further heated to a visible glow. Furthermore, a method of cutting and/or coagulating is also contemplated.
    Type: Application
    Filed: August 20, 2014
    Publication date: April 2, 2015
    Inventor: Donald J. Geisel
  • Patent number: 8992520
    Abstract: Herein disclosed are dual-mode electrosurgical devices designed to function in a first mode in which high-density RF energy is used to cut or vaporize tissue, and then a second mode in which lower-density RF energy desiccates tissue to produce hemostasis, as well as methods of performing electrosurgery using same. Devices formed in accordance with the principles of this invention may be used for any surgical procedure in which highly vascular tissue is cut electrosurgically in a dry or semi-dry field, examples of which include tonsillectomy, liver resection, and cosmetic procedures such as breast augmentation, breast reduction, breast mastopexy, and abdominoplasty.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 31, 2015
    Assignee: ElectroMedical Associates, LLC
    Inventors: Robert A. Van Wyk, Yuval Carmel, Anatoly Shkvarunets
  • Publication number: 20150088122
    Abstract: A surgical system includes an end effector assembly, a motor assembly, an energy source, and a controller. The controller activates the motor assembly, once it is determined that tissue is present between jaw members of the end effector assembly, to move the jaw members from a spaced-apart position to an approximated position to grasp tissue. The controller further activates the energy source, once tissue is grasped between the jaw members, to supply energy to the jaw members to seal tissue grasped between the jaw members. The controller further activates the motor assembly, once it is determined that tissue sealing is complete, to move the jaw members from the approximated position to the spaced-apart position to release sealed tissue. The system may further be configured to cut tissue once it is determined that tissue sealing is complete but before moving the jaw members to the spaced-apart position.
    Type: Application
    Filed: April 24, 2014
    Publication date: March 26, 2015
    Applicant: COVIDIEN LP
    Inventor: JEFFREY L. JENSEN
  • Publication number: 20150080878
    Abstract: Exemplary embodiments are directed to devices and methods for tissue removal. Exemplary embodiments can be configured for mechanical dissection as well as suction to grasp, resect and collect all or part of a target tissue. Exemplary embodiments may also comprise elements for cauterization of tissue and coagulation of blood vessels.
    Type: Application
    Filed: April 12, 2013
    Publication date: March 19, 2015
    Applicant: Board of Regents, the University of Texas System
    Inventors: Yusheng Feng, Robert Svatek, Mohammad Rahman, John Jordan, Luis Davila