Motor driven electrosurgical device with mechanical and electrical feedback

• US 9,161,803 B2
• Filed: 06/02/2011
• Issued: 10/20/2015
• Est. Priority Date: 11/05/2010
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Yates, David C., Zingman, Aron O., Madan, Ashvani K., Houser, Kevin L., Silkaitis, Danius P., Dannaher, William D., Dietz, Timothy G., Timm, Richard W., Laird, Robert J., Monson, Gavin M.
• Primary Examiner(s): DELLA, JAYMI E
• Application Number:
  US13/151,481
• Publication Number:
  US 20120116379A1
• Time in Patent Office: 1,601 Days
• Field of Search: 606 50- 52
• US Class Current: 1/1
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 17/285 combined with cutting implements
• CPC Class Codes: A61B 17/295 combined with cutting implements
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 18/04 by heating by applying electromagnetic radiation A61B18/18; hyperthermia using electric or magnetic fields, radiation or ultrasound A61N
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1233 with circuits for assuring patient safety
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00026 Conductivity or impedance, e.g. of tissue
• CPC Class Codes: A61B 2017/00057 Light
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00119 alarm; indicating an abnormal situation
• CPC Class Codes: A61B 2017/00128 related to intensity or progress of surgical action
• CPC Class Codes: A61B 2017/00172 Pulse trains, bursts, intermittent continuous operation
• CPC Class Codes: A61B 2017/0019 : Means for setting or varying the pulse width
• CPC Class Codes: A61B 2017/00194 : Means for setting or varying the repetition rate
• CPC Class Codes: A61B 2017/00353 : one mechanical instrument performing multiple functions, e.g. cutting and grasping channel for multiple instruments A61B2017/3445; instrument channel A61B2017/22072; replaceable heads A61B2017/2931; suction A61M1/00
• CPC Class Codes: A61B 2017/00398 : using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 : with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00473 : Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 : Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00482 : with a code
• CPC Class Codes: A61B 2017/00734 : battery operated
• CPC Class Codes: A61B 2017/0084 : low friction A61B2017/00853 takes precedence
• CPC Class Codes: A61B 2017/291 : the position of the handle being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2923 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2929 : with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/293 : with means preventing relative rotation between the shaft and the actuating rod
• CPC Class Codes: A61B 2017/2931 : with releasable head
• CPC Class Codes: A61B 2017/2933 : camming or guiding means
• CPC Class Codes: A61B 2017/2936 : Pins in guiding slots
• CPC Class Codes: A61B 2017/294 : Connection of actuating rod to jaw, e.g. releasable
• CPC Class Codes: A61B 2017/320069 : for ablating tissue
• CPC Class Codes: A61B 2017/320071 : with articulating means for working tip
• CPC Class Codes: A61B 2017/320094 : additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 : with sealing or cauterizing means
• CPC Class Codes: A61B 2018/00178 : Electrical connectors
• CPC Class Codes: A61B 2018/0019 : vibrating
• CPC Class Codes: A61B 2018/00196 : reciprocating lengthwise
• CPC Class Codes: A61B 2018/00297 : Means for providing haptic feedback
• CPC Class Codes: A61B 2018/00589 : Coagulation
• CPC Class Codes: A61B 2018/00595 : Cauterization
• CPC Class Codes: A61B 2018/00601 : Cutting
• CPC Class Codes: A61B 2018/00607 : Coagulation and cutting with the same instrument
• CPC Class Codes: A61B 2018/0063 : Sealing
• CPC Class Codes: A61B 2018/00642 : with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00666 : using a threshold value
• CPC Class Codes: A61B 2018/00702 : Power or energy
• CPC Class Codes: A61B 2018/00779 : Power or energy
• CPC Class Codes: A61B 2018/00791 : Temperature
• CPC Class Codes: A61B 2018/00797 : measured by multiple temperature sensors
• CPC Class Codes: A61B 2018/00815 : measured by a thermistor
• CPC Class Codes: A61B 2018/00827 : Current
• CPC Class Codes: A61B 2018/00875 : Resistance or impedance
• CPC Class Codes: A61B 2018/00892 : Voltage
• CPC Class Codes: A61B 2018/00898 : Alarms or notifications created in response to an abnormal condition
• CPC Class Codes: A61B 2018/00922 : by switching or controlling the treatment energy directly within the hand-piece
• CPC Class Codes: A61B 2018/00988 : Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter
• CPC Class Codes: A61B 2018/1226 : powered by a battery
• CPC Class Codes: A61B 2018/1412 : Blade
• CPC Class Codes: A61B 2018/1455 : having a moving blade for cutting tissue grasped by the jaws
• CPC Class Codes: A61B 2090/0803 : Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0813 : Accessories designed for easy sterilising, i.e. re-usable
• CPC Class Codes: A61B 2090/0814 : Preventing re-use
• CPC Class Codes: A61B 34/25 : User interfaces for surgical systems
• CPC Class Codes: A61B 34/76 : Manipulators having means for providing feel, e.g. force or tactile feedback
• CPC Class Codes: A61B 46/10 : specially adapted for instruments, e.g. microscopes
• CPC Class Codes: A61B 50/30 : Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments for wound clamps A61B17/10; for ligaturing clips A61B17/122; packages or dispensers for surgical gloves or finger-stalls A61B42/40
• CPC Class Codes: A61B 90/08 : Accessories or related features not otherwise provided for
• CPC Class Codes: A61B 90/40 : Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment
• CPC Class Codes: A61N 7/00 : Ultrasound therapy lithotripsy A61B17/22, A61B17/225; massage using supersonic vibration A61H23/00 ; using ultrasound for introducing media into the body A61M37/0092
• CPC Class Codes: G16H 20/40 : relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: H01M 10/46 : Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/48 : Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/488 : Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H01M 2220/30 : Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 50/247 : specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: H01M 50/531 : Electrode connections inside a battery casing
• CPC Class Codes: H02J 2310/23 : The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 7/0044 : specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0045 : concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/0048 : Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/345 : using capacitors as storage or buffering devices
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y10T 29/49005 : Acoustic transducer
• CPC Class Codes: Y10T 29/49895 : Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
• CPC Class Codes: Y10T 29/53913 : Aligner or center

Abstract

An electrosurgical device comprises an end effector, a cutting member, and en electromechanical driver. The end effector comprises a pair of jaws that clamp tissue. The jaws include electrodes that deliver RF energy to clamped tissue. The cutting member cuts tissue clamped between the jaws. The electromechanical driver drives the cutting member. A control module commands the electromechanical driver, and regulates the delivery of RF energy to the electrodes, based on a combination of user input and feedback signals from the electrodes and from the electromechanical driver. The device may provide tactile feedback to the user through the user input feature, based on a load encountered by the cutting member. The device may alert the user when the exterior of end effector makes incidental contact with tissue, to avoid inadvertently burning the tissue. The device may include a removable battery pack to power the electromechanical driver and the electrodes.

Claims

1. An electrosurgical device, comprising:

(a) a handpiece, wherein the handpiece includes a pivoting trigger;

(b) a shaft extending distally from the handpiece, the shaft having a distal end;

(c) an end effector at the distal end of the shaft, the end effector comprising;

(i) a first jaw, wherein the first jaw includes a first electrode, and

(ii) a second jaw, wherein the second jaw includes a second electrode,

wherein the first jaw is movable toward the second jaw to clamp tissue between the first and the second jaws,

wherein the first and the second electrodes are operable to deliver radiofrequency energy to the tissue clamped between the first and the second jaws;

(d) a jaw closure feature operable to move the first jaw toward the second jaw;

(e) an electromechanical driver operable to drive the jaw closure feature to move the first jaw toward the second jaw;

(f) a sensor configured to sense an operational parameter associated with the jaw closure feature; and

(g) a braking feature comprising a pair of pads, wherein the braking feature is operable to selectively provide variable frictional resistance against pivotal movement of the pivoting trigger by driving the pair of pads against an exterior surface of the pivoting trigger, wherein the braking feature is operable to vary the frictional resistance based on data from the sensor.