US20170172614A1 - Surgical instrument with multi-functioning trigger - Google Patents

Surgical instrument with multi-functioning trigger Download PDF

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Publication number
US20170172614A1
US20170172614A1 US14/972,920 US201514972920A US2017172614A1 US 20170172614 A1 US20170172614 A1 US 20170172614A1 US 201514972920 A US201514972920 A US 201514972920A US 2017172614 A1 US2017172614 A1 US 2017172614A1
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United States
Prior art keywords
trigger
end effector
surgical instrument
button
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/972,920
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English (en)
Inventor
Charles J. Scheib
Benjamin M. Boyd
Paul F. Riestenberg
Craig N. Faller
Allison Hamilton
Patrick J. Swindon
Christopher J. Chermside-Scabbo
Kevin L. Houser
David J. Cagle
Geoffrey S. Strobl
Benjamin J. Danziger
Rudolph H. Nobis
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Cilag GmbH International
Original Assignee
Ethicon LLC
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Filing date
Publication date
Application filed by Ethicon LLC filed Critical Ethicon LLC
Priority to US14/972,920 priority Critical patent/US20170172614A1/en
Assigned to ETHICON ENDO-SURGERY, LLC reassignment ETHICON ENDO-SURGERY, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOYD, Benjamin M., CAGLE, DAVID J., HOUSER, KEVIN L., STROBL, GEOFFREY S., DANZIGER, Benjamin J., FALLER, CRAIG N., NOBIS, RUDOLPH H., SCHEIB, CHARLES J., RIESTENBERG, PAUL F., HAMILTON, Allison, SWINDON, PATRICK J., CHERMSIDE-SCABBO, Christopher J.
Priority to EP16829163.1A priority patent/EP3389518B1/en
Priority to BR112018012281-5A priority patent/BR112018012281B1/pt
Priority to JP2018531501A priority patent/JP6896736B2/ja
Priority to PCT/US2016/066468 priority patent/WO2017106238A1/en
Priority to CN201680073879.XA priority patent/CN108366812B/zh
Priority to MA044071A priority patent/MA44071A/fr
Publication of US20170172614A1 publication Critical patent/US20170172614A1/en
Assigned to ETHICON LLC reassignment ETHICON LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: ETHICON ENDO-SURGERY, LLC
Priority to US16/784,428 priority patent/US11745031B2/en
Assigned to CILAG GMBH INTERNATIONAL reassignment CILAG GMBH INTERNATIONAL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ETHICON LLC
Priority to US18/350,322 priority patent/US20230381547A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00137—Details of operation mode
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00137—Details of operation mode
    • A61B2017/00154—Details of operation mode pulsed
    • A61B2017/00181—Means for setting or varying the pulse energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A61B2017/00411—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like actuated by application of energy from an energy source outside the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0042—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320093—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing cutting operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320094—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing clamping operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320095—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00595—Cauterization
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00619—Welding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/0063—Sealing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0056—Beam shaping elements

Definitions

  • a variety of surgical instruments include an end effector having a blade element that vibrates at ultrasonic frequencies to cut and/or seal tissue (e.g., by denaturing proteins in tissue cells). These instruments include one or more piezoelectric elements that convert electrical power into ultrasonic vibrations, which are communicated along an acoustic waveguide to the blade element. The precision of cutting and coagulation may be controlled by the operator's technique and adjusting the power level, blade edge angle, tissue traction, and blade pressure. Some instruments have a clamp arm and clamp pad for grasping tissue with the blade element.
  • ultrasonic surgical instruments examples include the HARMONIC ACE® Ultrasonic Shears, the HARMONIC WAVE® Ultrasonic Shears, the HARMONIC FOCUS® Ultrasonic Shears, and the HARMONIC SYNERGY® Ultrasonic Blades, all by Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio. Further examples of such devices and related concepts are disclosed in U.S. Pat. No. 5,322,055, entitled “Clamp Coagulator/Cutting System for Ultrasonic Surgical Instruments,” issued Jun. 21, 1994, the disclosure of which is incorporated by reference herein; U.S. Pat. No.
  • Some ultrasonic surgical instruments may include a cordless transducer such as that disclosed in U.S. Pub. No. 2012/0112687, entitled “Recharge System for Medical Devices,” published May 10, 2012, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2012/0116265, entitled “Surgical Instrument with Charging Devices,” published May 10, 2012, the disclosure of which is incorporated by reference herein; and/or U.S. Pat. App. No. 61/410,603, filed Nov. 5, 2010, entitled “Energy-Based Surgical Instruments,” the disclosure of which is incorporated by reference herein.
  • ultrasonic surgical instruments may include an articulating shaft section.
  • Examples of such ultrasonic surgical instruments are disclosed in U.S. Pub. No. 2014/0005701, published Jan. 2, 2014, entitled “Surgical Instruments with Articulating Shafts,” the disclosure of which is incorporated by reference herein; and U.S. Pub. No. 2014/0114334, published Apr. 24, 2014, entitled “Flexible Harmonic Waveguides/Blades for Surgical Instruments,” the disclosure of which is incorporated by reference herein.
  • FIG. 1 depicts a block schematic view of an exemplary surgical system
  • FIG. 2 depicts a side elevational view of an exemplary surgical instrument that may be incorporated into the system of FIG. 1 ;
  • FIG. 3 depicts a cross-sectional side view of an end effector of the instrument of FIG. 2 in a closed configuration
  • FIG. 4 depicts a cross-sectional side view of the end effector of FIG. 3 in an open configuration
  • FIG. 5 depicts a cross-sectional side view of a handle assembly of the instrument of FIG. 2 ;
  • FIG. 6A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 6B depicts a side elevation view of the surgical instrument of FIG. 6A , where the trigger is in a second position;
  • FIG. 6C depicts a side elevational view of the surgical instrument of FIG. 6A , where the trigger is in a third position;
  • FIG. 7A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 7B depicts a side elevational view of the surgical instrument of FIG. 7A , where the trigger is in a second position;
  • FIG. 7C depicts a side elevational view of the surgical instrument of FIG. 7A , where the trigger is in a third position;
  • FIG. 8A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 8B depicts a side elevational view of the surgical instrument of FIG. 8A , where the trigger is in a second position;
  • FIG. 8C depicts a side elevational view of the surgical instrument of FIG. 8A , where the trigger is in a third position;
  • FIG. 9A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where in trigger is in a first position and the movable buttons are in a first configuration;
  • FIG. 9B depicts a side elevational view of the surgical instrument of FIG. 9A , where the trigger is in a second position and the movable buttons are in the first configuration;
  • FIG. 9C depicts a side elevational view of the surgical instrument of FIG. 9A , where the trigger is in a third position and the movable buttons are in the first configuration;
  • FIG. 10 depicts a side elevational view of the surgical instrument of FIG. 9A , where the trigger is in the first position and the movable buttons are in a second configuration;
  • FIG. 11 depicts a side elevational view of the surgical instrument of FIG. 9A , where the trigger is in the first position and the movable buttons are in a third configuration;
  • FIG. 12A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is a in a first position;
  • FIG. 12B depicts a side elevational view of the surgical instrument of FIG. 12A , where the trigger is in a second position;
  • FIG. 12C depicts a side elevational view of the surgical instrument of FIG. 12A , where the trigger is in a third position;
  • FIG. 13A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 13B depicts a side elevational view of the surgical instrument of FIG. 13A , where the trigger is in a second position;
  • FIG. 13C depicts a side elevational view of the surgical instrument of FIG. 13A , where the trigger is in a third position;
  • FIG. 14A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 14B depicts a side elevational view of the surgical instrument of FIG. 14A , where the trigger is in a second position;
  • FIG. 14C depicts a side elevational view of the surgical instrument of FIG. 14A , where the trigger is in a third position;
  • FIG. 15A depicts a side elevational view of another surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first longitudinal position;
  • FIG. 15B depicts a side elevational view of the surgical instrument of FIG. 15A , where the trigger is in a second longitudinal position;
  • FIG. 16A depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along line 16 A- 16 A of FIG. 15A , where the trigger is in a first lateral position;
  • FIG. 16B depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along the line 16 B- 16 B of FIG. 15B , where the trigger in a first lateral position;
  • FIG. 17A depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along line 16 A- 16 A of FIG. 15A , where the trigger is in a second lateral position;
  • FIG. 17B depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along line 16 B- 16 B of FIG. 15B , where the trigger is in a second lateral position;
  • FIG. 18A depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along line 16 A- 16 A of FIG. 15A , where the trigger is in a third lateral position;
  • FIG. 18B depicts a cross-sectional view of the surgical instrument of FIG. 15A taken along line 16 B- 16 B of FIG. 15B , where the trigger is in a third lateral position;
  • FIG. 19A depicts a side elevational view of another exemplary surgical instrument that may be incorporated into the system of FIG. 1 , where the trigger is in a first position;
  • FIG. 19B depicts a side elevational view of the surgical instrument of FIG. 19A , were the trigger is in a second position;
  • FIG. 19C depicts a side elevational view of the surgical instrument of FIG. 19A , where the trigger is in a third position;
  • FIG. 19D depicts a side elevational view of the surgical instrument of FIG. 19A , where the trigger is in a fourth position;
  • FIG. 20 depicts a cross-sectional view of the surgical instrument of FIG. 19A taken along line 20 - 20 of FIG. 19A .
  • proximal and distal are defined herein relative to an operator or other operator grasping a surgical instrument having a distal surgical end effector.
  • proximal refers to the position of an element closer to the operator or other operator and the term “distal” refers to the position of an element closer to the surgical end effector of the surgical instrument and further away from the operator or other operator.
  • FIG. 1 shows components of an exemplary surgical system ( 10 ) in diagrammatic block form.
  • system ( 10 ) comprises an ultrasonic generator ( 12 ) and an ultrasonic surgical instrument ( 20 ).
  • instrument ( 20 ) is operable to cut tissue and seal or weld tissue (e.g., a blood vessel, etc.) substantially simultaneously, using ultrasonic vibrational energy.
  • Generator ( 12 ) and instrument ( 20 ) are coupled together via a cable ( 14 ).
  • Cable ( 14 ) may comprise a plurality of wires; and may provide unidirectional electrical communication from generator ( 12 ) to instrument ( 20 ) and/or bidirectional electrical communication between generator ( 12 ) and instrument ( 20 ).
  • cable ( 14 ) may comprise a “hot” wire for electrical power to surgical instrument ( 20 ), a ground wire, and a signal wire for transmitting signals from surgical instrument ( 20 ) to ultrasonic generator ( 12 ), with a shield surrounding the three wires.
  • separate “hot” wires are used for separate activation voltages (e.g., one “hot” wire for a first activation voltage and another “hot” wire for a second activation voltage, or a variable voltage between the wires proportional to the power requested, etc.).
  • any other suitable number or configuration of wires may be used.
  • system ( 10 ) may incorporate generator ( 12 ) into instrument ( 20 ), such that cable ( 14 ) may simply be omitted.
  • generator ( 12 ) may comprise the GEN04, GEN11, or GEN 300 sold by Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio.
  • generator ( 12 ) may be constructed in accordance with at least some of the teachings of U.S. Pub. No. 2011/0087212, entitled “Surgical Generator for Ultrasonic and Electrosurgical Devices,” published Apr. 14, 2011, the disclosure of which is incorporated by reference herein.
  • any other suitable generator may be used.
  • generator ( 12 ) is operable to provide power to instrument ( 20 ) to perform ultrasonic surgical procedures.
  • Instrument ( 20 ) comprises a handle assembly ( 22 ), which is configured to be grasped in one hand (or two hands) of an operator and manipulated by one hand (or two hands) of the operator during a surgical procedure.
  • handle assembly ( 22 ) may be grasped like a pencil by the operator.
  • handle assembly ( 22 ) may include a scissor grip that may be grasped like scissors by the operator.
  • handle assembly ( 22 ) may include a pistol grip that may be grasped like a pistol by the operator.
  • handle assembly ( 22 ) may be configured to be gripped in any other suitable fashion.
  • instrument ( 20 ) may substitute handle assembly ( 22 ) with a body that is coupled to a robotic surgical system that is configured to operate instrument ( 20 ) (e.g., via remote control, etc.).
  • a blade ( 24 ) extends distally from handle assembly ( 22 ).
  • Handle assembly ( 22 ) includes an ultrasonic transducer ( 26 ) and an ultrasonic waveguide ( 28 ), which couples ultrasonic transducer ( 26 ) with blade ( 24 ).
  • Ultrasonic transducer ( 26 ) receives electrical power from generator ( 12 ) via cable ( 14 ). By virtue of its piezoelectric properties, ultrasonic transducer ( 26 ) is operable to convert such electrical power into ultrasonic vibrational energy.
  • Ultrasonic waveguide ( 28 ) may be flexible, semi-flexible, rigid, or have any other suitable properties.
  • ultrasonic transducer ( 26 ) is integrally coupled with blade ( 24 ) via ultrasonic waveguide ( 28 ).
  • ultrasonic transducer ( 26 ) when ultrasonic transducer ( 26 ) is activated to vibrate at ultrasonic frequencies, such vibrations are communicated through ultrasonic waveguide ( 28 ) to blade ( 24 ), such that blade ( 24 ) will also vibrate at ultrasonic frequencies.
  • blade ( 24 ) is in an activated state (i.e., vibrating ultrasonically), blade ( 24 ) is operable to effectively cut through tissue and seal tissue.
  • Ultrasonic transducer ( 26 ), ultrasonic waveguide ( 28 ), and blade ( 24 ) together thus form an acoustic assembly providing ultrasonic energy for surgical procedures when powered by generator ( 12 ).
  • Handle assembly ( 22 ) is configured to substantially isolate the operator from the vibrations of the acoustic assembly formed by transducer ( 26 ), ultrasonic waveguide ( 28 ), and blade ( 24 ).
  • ultrasonic waveguide ( 28 ) may amplify the mechanical vibrations transmitted through ultrasonic waveguide ( 28 ) to blade ( 24 ).
  • Ultrasonic waveguide ( 28 ) may further have features to control the gain of the longitudinal vibration along ultrasonic waveguide ( 28 ) and/or features to tune ultrasonic waveguide ( 28 ) to the resonant frequency of system ( 10 ).
  • ultrasonic waveguide ( 28 ) may have any suitable cross-sectional dimensions/configurations, such as a substantially uniform cross-section, be tapered at various sections, be tapered along its entire length, or have any other suitable configuration.
  • Ultrasonic waveguide ( 28 ) may, for example, have a length substantially equal to an integral number of one-half system wavelengths (n ⁇ /2).
  • Ultrasonic waveguide ( 28 ) and blade ( 24 ) may be fabricated from a solid core shaft constructed out of a material or combination of materials that propagates ultrasonic energy efficiently, such as titanium alloy (i.e., Ti-6Al-4V), aluminum alloys, sapphire, stainless steel, or any other acoustically compatible material or combination of materials.
  • a material or combination of materials that propagates ultrasonic energy efficiently, such as titanium alloy (i.e., Ti-6Al-4V), aluminum alloys, sapphire, stainless steel, or any other acoustically compatible material or combination of materials.
  • the distal end of blade ( 24 ) is located at a position corresponding to an anti-node associated with resonant ultrasonic vibrations communicated through waveguide ( 28 ) (i.e., at an acoustic anti-node), in order to tune the acoustic assembly to a preferred resonant frequency f o when the acoustic assembly is not loaded by tissue.
  • transducer ( 26 ) When transducer ( 26 ) is energized, the distal end of blade ( 24 ) is configured to move longitudinally in the range of, for example, approximately 10 to 500 microns peak-to-peak, and in some instances in the range of about 20 to about 200 microns at a predetermined vibratory frequency f o of, for example, 55.5 kHz.
  • f o a predetermined vibratory frequency
  • the ultrasonic oscillation of blade ( 24 ) may simultaneously sever the tissue and denature the proteins in adjacent tissue cells, thereby providing a coagulative effect with relatively little thermal spread.
  • an electrical current may also be provided through blade ( 24 ) to also cauterize the tissue.
  • ultrasonic waveguide ( 28 ) and blade ( 24 ) may comprise components sold under product codes SNGHK and SNGCB by Ethicon Endo-Surgery, Inc. of Cincinnati, Ohio.
  • ultrasonic waveguide ( 28 ) and/or blade ( 24 ) may be constructed and operable in accordance with the teachings of U.S. Pat. No. 6,423,082, entitled “Ultrasonic Surgical Blade with Improved Cutting and Coagulation Features,” issued Jul. 23, 2002, the disclosure of which is incorporated by reference herein.
  • ultrasonic waveguide ( 28 ) and/or blade ( 24 ) may be constructed and operable in accordance with the teachings of U.S.
  • Handle assembly ( 22 ) of the present example also includes a control selector ( 30 ) and an activation switch ( 32 ), which are each in communication with a circuit board ( 34 ).
  • circuit board ( 34 ) may comprise a conventional printed circuit board, a flex circuit, a rigid-flex circuit, or may have any other suitable configuration.
  • Control selector ( 30 ) and activation switch ( 32 ) may be in communication with circuit board ( 34 ) via one or more wires, traces formed in a circuit board or flex circuit, and/or in any other suitable fashion.
  • Circuit board ( 34 ) is coupled with cable ( 14 ), which is in turn coupled with control circuitry ( 16 ) within generator ( 12 ).
  • Activation switch ( 32 ) is operable to selectively activate power to ultrasonic transducer ( 26 ). In particular, when switch ( 32 ) is activated, such activation provides communication of appropriate power to ultrasonic transducer ( 26 ) via cable ( 14 ).
  • activation switch ( 32 ) may be constructed in accordance with any of the teachings of the various references cited herein. Other various forms that activation switch ( 32 ) may take will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • surgical system ( 10 ) is operable to provide at least two different levels or types of ultrasonic energy (e.g., different frequencies and/or amplitudes, etc.) at blade ( 24 ).
  • control selector ( 30 ) is operable to permit the operator to select a desired level/amplitude of ultrasonic energy.
  • control selector ( 30 ) may be constructed in accordance with any of the teachings of the various references cited herein. Other various forms that control selector ( 30 ) may take will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • control circuitry ( 16 ) of the generator ( 12 ) when an operator makes a selection through control selector ( 30 ), the operator's selection is communicated back to control circuitry ( 16 ) of the generator ( 12 ) via cable ( 14 ), and control circuitry ( 16 ) adjusts the power communicated from generator ( 12 ) accordingly the next time the operator actuates activation switch ( 32 ).
  • the level/amplitude of ultrasonic energy provided at blade ( 24 ) may be a function of characteristics of the electrical power communicated from generator ( 12 ) to instrument ( 20 ) via cable ( 14 ).
  • control circuitry ( 16 ) of generator ( 12 ) may provide electrical power (via cable ( 14 )) having characteristics associated with the ultrasonic energy level/amplitude or type selected through control selector ( 30 ).
  • Generator ( 12 ) may thus be operable to communicate different types or degrees of electrical power to ultrasonic transducer ( 26 ), in accordance with selections made by the operator via control selector ( 30 ).
  • generator ( 12 ) may increase the voltage and/or current of the applied signal to increase the longitudinal amplitude of the acoustic assembly.
  • generator ( 12 ) may provide selectability between a “level 1” and a “level 5,” which may correspond with blade ( 24 ) vibrational resonance amplitude of approximately 50 microns and approximately 90 microns, respectively.
  • control circuitry ( 16 ) may be configured will be apparent to those of ordinary skill in the art in view of the teachings herein. It should also be understood that control selector ( 30 ) and activation switch ( 32 ) may be substituted with two or more activation switches ( 32 ). In some such versions, one activation switch ( 32 ) is operable to activate blade ( 24 ) at one power level/type while another activation switch ( 32 ) is operable to activate blade ( 24 ) at another power level/type, etc.
  • control circuitry ( 16 ) is located within handle assembly ( 22 ).
  • generator ( 12 ) only communicates one type of electrical power (e.g., just one voltage and/or current available) to handle assembly ( 22 ), and control circuitry ( 16 ) within handle assembly ( 22 ) is operable to modify the electrical power (e.g., the voltage of the electrical power), in accordance with selections made by the operator via control selector ( 30 ), before the electrical power reaches ultrasonic transducer ( 26 ).
  • generator ( 12 ) may be incorporated into handle assembly ( 22 ) along with all other components of surgical system ( 10 ). For instance, one or more batteries (not shown) or other portable sources of power may be provided in handle assembly ( 22 ). Still other suitable ways in which the components depicted in FIG. 1 may be rearranged or otherwise configured or modified will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • FIGS. 2-5 illustrate an exemplary ultrasonic surgical instrument ( 100 ). At least part of surgical instrument ( 100 ) may be constructed and operable in accordance with at least some of the teachings of U.S. Pat. No. 5,322,055; U.S. Pat. No. 5,873,873; U.S. Pat. No. 5,980,510; U.S. Pat. No. 6,325,811; U.S. Pat. No. 6,773,444; U.S. Pat. No. 6,783,524; U.S. Pat. No. 8,461,744; U.S. Pat. No. 8,623,027; U.S. Pub. No. 2006/0079874; U.S. Pub. No. 2007/0191713; U.S.
  • surgical instrument ( 100 ) is operable to cut tissue and seal or weld tissue (e.g., a blood vessel, etc.) substantially simultaneously. It should also be understood that surgical instrument ( 100 ) may have various structural and functional similarities with the HARMONIC ACE® Ultrasonic Shears, the HARMONIC WAVE® Ultrasonic Shears, the HARMONIC FOCUS® Ultrasonic Shears, and/or the HARMONIC SYNERGY® Ultrasonic Blades. Furthermore, surgical instrument ( 100 ) may have various structural and functional similarities with the devices taught in any of the other references that are cited and incorporated by reference herein.
  • Surgical instrument ( 100 ) of the present example comprises a handle assembly ( 120 ), a shaft assembly ( 130 ), and an end effector ( 140 ).
  • Handle assembly ( 120 ) comprises a body ( 122 ) including a pistol grip ( 124 ) and a pair of buttons ( 126 ).
  • Handle assembly ( 120 ) also includes a trigger ( 128 ) that is pivotable toward and away from pistol grip ( 124 ). It should be understood, however, that various other suitable configurations may be used, including but not limited to a pencil-grip configuration or a scissor-grip configuration.
  • End effector ( 140 ) includes an ultrasonic blade ( 160 ) and a pivoting clamp arm ( 144 ).
  • Clamp arm ( 144 ) is coupled with trigger ( 128 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 128 ) toward pistol grip ( 124 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 128 ) away from pistol grip ( 124 ).
  • trigger ( 128 ) may be coupled with trigger ( 128 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • one or more resilient members are used to bias clamp arm ( 144 ) and/or trigger ( 128 ) to the open position shown in FIG. 4 .
  • An ultrasonic transducer assembly ( 112 ) extends proximally from body ( 122 ) of the handle assembly ( 120 ). Transducer assembly ( 112 ) is coupled with a generator ( 116 ) via a cable ( 114 ). Transducer assembly ( 112 ) receives electrical power from generator ( 116 ) and converts that power into ultrasonic vibrations through piezoelectric principles.
  • Generator ( 116 ) may include a power source and control module configured to provide a power profile to transducer assembly ( 112 ) that is particularly suited for the generation of ultrasonic vibrations through transducer assembly ( 112 ).
  • generator ( 116 ) may comprise a GEN 300 sold by Ethicon Endo-Surgery, Inc.
  • generator ( 116 ) may be constructed in accordance with at least some of the teachings of U.S. Pub. No. 2011/0087212, entitled “Surgical Generator for Ultrasonic and Electrosurgical Devices,” published Apr. 14, 2011, the disclosure of which is incorporated by reference herein. It should also be understood that at least some of the functionality of generator ( 116 ) may be integrated into handle assembly ( 120 ), and that handle assembly ( 120 ) may even include a battery or other on-board power source such that cable ( 114 ) is omitted. Still other suitable forms that generator ( 116 ) may take, as well as various features and operabilities that generator ( 116 ) may provide, will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • Blade ( 160 ) of the present example is operable to vibrate at ultrasonic frequencies in order to effectively cut through and seal tissue, particularly when the tissue is being clamped between clamp arm ( 144 ) and blade ( 160 ).
  • Blade ( 160 ) is positioned at the distal end of an acoustic drivetrain.
  • This acoustic drivetrain includes transducer assembly ( 112 ) and an acoustic waveguide ( 102 ).
  • Transducer assembly ( 112 ) includes a set of piezoelectric discs (not shown) located proximal to a horn (not shown) of the rigid acoustic waveguide ( 102 ).
  • the piezoelectric discs are operable to convert electrical power into ultrasonic vibrations, which are then transmitted along acoustic waveguide ( 102 ), which extends through shaft assembly ( 130 ), to blade ( 160 ) in accordance with known configurations and techniques.
  • acoustic waveguide 102
  • shaft assembly 130
  • blade 160
  • this portion of the acoustic drivetrain may be configured in accordance with various teachings of various references that are cited herein.
  • Waveguide ( 102 ) is secured within shaft assembly ( 130 ) via a pin ( 133 ), which passes through waveguide ( 102 ) and shaft assembly ( 130 ).
  • Pin ( 133 ) is located at a position along the length of waveguide ( 102 ) corresponding to a node associated with resonant ultrasonic vibrations communicated through waveguide ( 102 ).
  • ultrasonic blade ( 160 ) is in an activated state (i.e., vibrating ultrasonically), ultrasonic blade ( 160 ) is operable to effectively cut through and seal tissue, particularly when the tissue is being clamped between clamp arm ( 144 ) and ultrasonic blade ( 160 ).
  • waveguide ( 102 ) may be configured to amplify mechanical vibrations transmitted through waveguide ( 102 ). Furthermore, waveguide ( 102 ) may include features operable to control the gain of the longitudinal vibrations along waveguide ( 102 ) and/or features to tune waveguide ( 102 ) to the resonant frequency of the system.
  • the distal end of blade ( 160 ) is located at a position corresponding to an anti-node associated with resonant ultrasonic vibrations communicated through waveguide ( 102 ), in order to tune the acoustic assembly to a preferred resonant frequency f o when the acoustic assembly is not loaded by tissue.
  • the distal end of blade ( 160 ) is configured to move longitudinally in the range of, for example, approximately 10 to 500 microns peak-to-peak, and in some instances in the range of about 20 to about 200 microns at a predetermined vibratory frequency f o of, for example, 55.5 kHz.
  • transducer assembly ( 112 ) of the present example When transducer assembly ( 112 ) of the present example is activated, these mechanical oscillations are transmitted through waveguide ( 102 ) to reach blade ( 160 ), thereby providing oscillation of blade ( 160 ) at the resonant ultrasonic frequency.
  • the ultrasonic oscillation of blade ( 160 ) may simultaneously sever the tissue and denature the proteins in adjacent tissue cells, thereby providing a coagulative effect with relatively little thermal spread.
  • an electrical current may also be provided through blade ( 160 ) and clamp arm ( 144 ) to also cauterize the tissue.
  • buttons ( 126 ) may be activate buttons ( 126 ) to selectively activate transducer assembly ( 112 ) to activate blade ( 160 ).
  • two buttons ( 126 ) are provided—one for activating blade ( 160 ) at a low power and another for activating blade ( 160 ) at a high power.
  • a foot pedal may be provided to selectively activate transducer assembly ( 112 ).
  • Buttons ( 126 ) of the present example are positioned such that an operator may readily fully operate instrument ( 100 ) with a single hand.
  • buttons ( 126 ) may be located at any other suitable positions.
  • Shaft assembly ( 130 ) of the present example comprises an outer sheath ( 132 ), an inner tube ( 134 ) slidably disposed within the outer sheath ( 132 ), and a waveguide ( 102 ) disposed within the inner tube ( 134 ).
  • inner tube ( 134 ) is operable to translate longitudinally within outer sheath ( 132 ) relative to outer sheath ( 132 ) to selectively pivot clamp arm ( 144 ) toward and away from blade ( 160 ).
  • Shaft assembly ( 130 ) of the present example further includes a rotation assembly ( 150 ).
  • Rotation assembly ( 150 ) is operable to rotate the entire shaft assembly ( 130 ) and end effector ( 140 ) relative to handle assembly ( 120 ) about a longitudinal axis of shaft assembly ( 130 ). In some versions, rotation assembly ( 150 ) is operable to selectively lock the angular position of shaft assembly ( 130 ) and end effector ( 140 ) relative to handle assembly ( 120 ) about the longitudinal axis of shaft assembly ( 130 ).
  • a rotation knob ( 152 ) of rotation assembly ( 150 ) may be translatable between a first longitudinal position, in which shaft assembly ( 130 ) and end effector ( 140 ) are rotatable relative to handle assembly ( 120 ) about the longitudinal axis of shaft assembly ( 130 ); and a second longitudinal position, in which shaft assembly ( 130 ) and end effector ( 140 ) are not rotatable relative to handle assembly ( 120 ) about the longitudinal axis of shaft assembly ( 130 ).
  • shaft assembly ( 130 ) may have a variety of other components, features, and operabilities, in addition to or in lieu of any of those noted above. Other suitable configurations for shaft assembly ( 130 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • end effector ( 140 ) includes ultrasonic blade ( 160 ) and clamp arm ( 144 ).
  • Clamp arm ( 144 ) includes a clamp pad ( 146 ) secured to an underside of the clamp arm ( 144 ) and facing the blade ( 160 ).
  • Clamp arm ( 144 ) is pivotably coupled with a distal end of outer sheath ( 132 ) of shaft assembly ( 130 ) above ultrasonic blade ( 160 ) via a pin ( 145 ). As best seen in FIG.
  • a distal end of inner tube ( 134 ) is rotatably coupled with a proximal end of clamp arm ( 144 ) below ultrasonic blade ( 160 ) via a pin ( 135 ) such that longitudinal translation of inner tube ( 134 ) causes rotation of clamp arm ( 144 ) about pin ( 145 ) toward and away from ultrasonic blade ( 160 ) to thereby clamp tissue between clamp arm ( 144 ) and ultrasonic blade ( 160 ) to cut and/or seal the tissue.
  • proximal longitudinal translation of inner tube ( 134 ) relative to outer sheath ( 132 ) and handle assembly ( 120 ) causes clamp arm ( 144 ) to move toward ultrasonic blade ( 160 ); and distal longitudinal translation of inner tube ( 134 ) relative to outer sheath ( 132 ) and handle assembly ( 120 ) causes clamp arm ( 144 ) to move away from ultrasonic blade ( 160 ).
  • trigger ( 128 ) is pivotably coupled to handle assembly ( 120 ) via a pin ( 123 A) such that trigger ( 128 ) is operable to rotate about pin ( 123 A).
  • trigger ( 128 ) is coupled with a yoke ( 125 ) via a linkage ( 129 ) such that rotation of trigger ( 128 ) about pin ( 123 A) causes longitudinal translation of yoke ( 125 ).
  • a first end ( 129 A) of linkage ( 129 ) is rotatably coupled with a proximal portion of trigger ( 128 ) via a pin ( 123 B).
  • a second end ( 129 B) of linkage ( 129 ) is rotatably coupled with a proximal portion of yoke ( 125 ) via a pin ( 123 C).
  • a pair of elongate oval-shaped projections ( 127 ) extend inwardly from interior surfaces of body ( 122 ). An interior surface of each oval-shaped projection ( 127 ) defines an elongate oval-shaped slot ( 127 A).
  • Pin ( 123 C) passes completely through the proximal portion of yoke ( 125 ) and second end ( 129 B) of linkage ( 129 ) such that ends of pin ( 123 C) extend from opposite sides of yoke ( 125 ).
  • pin ( 123 C) are slidably and rotatably disposed within oval-shaped slots ( 127 A).
  • a pin ( 123 D) passes completely through a distal portion of yoke ( 125 ) such that ends of pin ( 123 D) extend from opposite sides of yoke ( 125 ).
  • These ends of pin ( 123 D) are slidably and rotatably disposed within oval-shaped slots ( 127 A). It should therefore be understood that yoke ( 125 ) is longitudinally translatable within oval-shaped slots ( 127 A) via pins ( 123 C, 123 D) between a proximal longitudinal position and a distal longitudinal position.
  • trigger ( 128 ) is coupled with yoke ( 125 ) via linkage ( 129 )
  • pivoting of trigger ( 128 ) toward and away from pistol grip ( 124 ) will cause longitudinal translation of yoke ( 125 ) within oval-shaped slots ( 127 A).
  • pivoting of trigger ( 128 ) toward pistol grip ( 124 ) will cause proximal longitudinal translation of yoke ( 125 ) within oval-shaped slots ( 127 A); and that pivoting of trigger ( 128 ) away from pistol grip ( 124 ) will cause distal longitudinal translation of yoke ( 125 ) within oval-shaped slots ( 127 A).
  • a distal portion of yoke ( 125 ) is coupled with inner tube ( 134 ) of shaft assembly ( 130 ) via a coupling assembly ( 135 ).
  • inner tube ( 134 ) is longitudinally translatable within outer sheath ( 132 ), such that inner tube ( 134 ) is configured to longitudinally translate concurrently with yoke ( 125 ).
  • pivoting of trigger ( 128 ) toward pistol grip ( 124 ) causes proximal longitudinal translation of yoke ( 125 )
  • pivoting of trigger ( 128 ) toward pistol grip ( 124 ) will cause proximal longitudinal translation of inner tube ( 134 ) relative to outer sheath ( 132 ) and handle assembly ( 120 ); and because pivoting of trigger ( 128 ) away from pistol grip ( 124 ) causes distal longitudinal translation of yoke ( 125 ), it should be understood that and that pivoting of trigger ( 128 ) away from pistol grip ( 124 ) will cause distal longitudinal translation of inner tube ( 134 ) relative to outer sheath ( 132 ) and handle assembly ( 120 ).
  • one or more resilient members are used to bias clamp arm ( 144 ) and/or trigger ( 128 ) to the open position shown in FIG. 4 .
  • a spring ( 136 ) is positioned within a proximal end of body ( 122 ) of the handle assembly ( 120 ).
  • Spring ( 136 ) bears against body ( 122 ) and a proximal end of yoke ( 125 ) to thereby bias yoke ( 125 ) toward the distal position. Biasing of yoke ( 125 ) toward the distal position causes inner tube ( 134 ) to be biased distally and further causes trigger ( 128 ) to be biased away from pistol grip ( 124 ).
  • surgical instrument ( 100 ) may be configured in numerous other ways as will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • at least part of surgical instrument ( 100 ) may be constructed and/or operable in accordance with at least some of the teachings of any of the following, the disclosures of which are all incorporated by reference herein: U.S. Pat. No. 5,322,055; U.S. Pat. No. 5,873,873; U.S. Pat. No. 5,980,510; U.S. Pat. No. 6,325,811; U.S. Pat. No. 6,783,524; U.S. Pub.
  • handle assembly ( 22 , 120 ) may include control selector ( 30 ) and activation switch ( 32 ); where activation switch ( 32 ) may provide appropriate power to ultrasonic transducer ( 26 , 112 ), and control selector ( 30 ) may allow the operator to select a desired power level or amplitude of ultrasonic energy.
  • handle assembly ( 22 , 120 ) may include two or more activation switches ( 32 ) or buttons ( 126 ), each corresponding to different power levels or amplitudes of ultrasonic energy.
  • handle assembly ( 22 , 120 ) may include a trigger ( 128 ) coupled to clamp arm ( 144 ) such that clamp arm ( 144 ) is pivotable towards ultrasonic blade ( 24 , 160 ) to clamp tissue between clamp arm ( 144 ) and ultrasonic blade ( 24 , 160 ).
  • control selector ( 30 ), activation switch ( 32 ), or both control selector ( 30 ) and activation switch ( 32 ) into certain aspects of trigger ( 128 ). This may enable the operator to select a desired power level and/or activate ultrasonic blade ( 24 , 160 ) by pivoting trigger ( 128 ) toward pistol grip ( 124 ).
  • trigger ( 128 ) may be desirable to incorporate the functionality of control selector ( 30 ), activation switch ( 32 ), or both control selector ( 30 ) and activation switch ( 32 ) into certain aspects of trigger ( 128 ).
  • This may enable the operator to select a desired power level and/or activate ultrasonic blade ( 24 , 160 ) by pivoting trigger ( 128 ) toward pistol grip ( 124 ).
  • the principles of the current disclosure are not intended to be limited to ultrasonic surgical instruments ( 20 , 100 ).
  • One having ordinary skill in the art would immediately recognize these principles may be readily incorporated into a variety of different instruments requiring activation, power selection, and tissue manipulation.
  • FIGS. 6A-6C show an alternative handle assembly ( 220 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 220 ) of this example includes a body ( 222 ), a pistol grip ( 224 ), and a trigger ( 228 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 220 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 228 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 228 ) toward pistol grip ( 224 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 228 ) away from pistol grip ( 224 ).
  • trigger ( 228 ) may be coupled with trigger ( 228 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 228 ) toward pistol grip ( 224 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 228 ) away from pistol grip ( 224 ).
  • Various suitable ways in which clamp arm ( 144 ) may be coupled with trigger ( 228 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • handle assembly ( 120 ) includes two activation buttons ( 126 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power
  • handle assembly ( 220 ) of the present example includes only one activation button ( 226 ).
  • pistol grip ( 224 ) houses three power switches ( 264 , 266 , 268 ).
  • Trigger ( 228 ) includes a lever ( 262 ) that is pivotally coupled to body ( 222 ) via pin ( 260 ).
  • a bridge ( 270 ) is unitarily fixed to lever ( 262 ).
  • bridge ( 270 ) is located on lever ( 262 ) such that as trigger ( 228 ) pivots towards pistol grip ( 224 ), bridge ( 270 ) successively contacts, and thereby activates, individual switches ( 264 , 266 , 268 ).
  • Bridge ( 270 ) may only activate one individual switch ( 264 , 266 , 268 ) at time, corresponding to the pivotal location of trigger ( 228 ) relative to pistol grip ( 224 ).
  • Individual switches ( 264 , 266 , 268 ) may be in electrical communication with circuit board ( 34 ).
  • bridge ( 270 ) activates switch ( 264 ). Activation of switch ( 264 ) may communicate with circuit board ( 34 ) to set the desired power level to low. Therefore, if the operator presses button ( 226 ) when trigger ( 228 ) is located at the position shown in FIG. 6A , ultrasonic blade ( 160 ) will activate to the corresponding low power level. Similarly, when trigger ( 228 ) is in the position shown in FIG. 6B , bridge ( 270 ) activates switch ( 266 ). Activation of switch ( 266 ) may communicate with circuit board ( 34 ) to set the desired power lever to medium.
  • tactile feedback may be provided in order to indicate to the operator that trigger ( 228 ) has rotated from one power level to the next.
  • corresponding detents may be placed on pistol grip ( 224 ) and lever ( 262 ), where the detents are configured to interact with each other when trigger ( 228 ) rotates to and from the positions shown in FIGS. 6A-6C . Therefore, the operator will feel a click or sudden increase in physical resistance to further pivoting of trigger ( 228 ) when instrument ( 100 ) transitions from one power level to the next.
  • circuit board ( 34 ) may set the desired power level to off. Therefore, if the operator presses button ( 226 ) while bridge ( 270 ) is not in contact with any switch ( 264 , 266 , 268 ), ultrasonic blade ( 160 ) will remain inactivated. This may act as a safety switch.
  • trigger ( 228 ) may be modified such that one or more trigger switches are included on lever ( 262 ). Such trigger switches may be configured such that the trigger switch is positioned directly under button ( 226 ) when trigger ( 228 ) is pivoted to an appropriate position.
  • button ( 226 ) may be inoperable when a trigger switch is not positioned directly under button ( 226 ).
  • the activation circuit may require closure of a trigger switch on lever ( 262 ) by button ( 226 ) in order for blade ( 160 ) to be activated.
  • Such one or more trigger switches may be provided in addition to or in lieu of switches ( 264 , 266 , 268 ).
  • the different trigger switches may provide activation of blade ( 160 ) at different power levels and/or provide activation of end effector ( 140 ) at different power modalities.
  • any of the switches ( 264 , 266 , 268 ) may also communicate to circuit board ( 34 ) to set the desired power level to off. Therefore, contact between bridge ( 270 ) and any one of switches ( 264 , 266 , 268 ) may also act as a safety switch. Additionally, while three switches ( 264 , 266 , 268 ) are shown in the present example, any number of switches may be utilized as would be apparent to one having ordinary skill in the art in view of the teachings herein.
  • Trigger ( 228 ) may also be modified such that closure of clamp arm ( 144 ) relative to ultrasonic blade ( 160 ) occurs before bridge ( 270 ) makes contact with switch ( 264 ).
  • switches ( 264 , 266 , 268 ) may be positioned such that trigger ( 228 ) can move through a first range of pivotal motion before contacting switch ( 264 ).
  • Trigger ( 228 ) may thus at least partially pivot clamp arm ( 144 ) toward blade ( 160 ) during this first range of pivotal motion.
  • trigger ( 228 ) is movable through a first range of motion to pivot clamp arm ( 144 ) toward blade ( 160 ) to a fully closed position; then trigger ( 228 ) is further pivotable through second, third, and fourth ranges of motion to enable bridge ( 270 ) to successively activate switches ( 264 , 266 , 268 ).
  • clamp arm ( 144 ) may provide progressively increasing compression of tissue against blade ( 160 ).
  • a locking clutch may provide a coupling between clamp arm ( 144 ) and trigger ( 228 ), such that movement of trigger ( 228 ) through the second, third, and fourth ranges of motion do not have any effect on clamp arm ( 144 ).
  • a locking clutch may provide a coupling between clamp arm ( 144 ) and trigger ( 228 ), such that movement of trigger ( 228 ) through the second, third, and fourth ranges of motion do not have any effect on clamp arm ( 144 ).
  • bridge ( 270 ) of the present example is sized and configured such that bridge ( 270 ) will only activate one individual switch ( 264 , 266 , 268 ) at a time, based on the pivotal location of trigger ( 228 ) relative to pistol grip ( 224 ). In some other versions, however, bridge ( 270 ) may be sized and configured to activate more than one switch ( 264 , 266 , 268 ) at a time.
  • bridge ( 270 ) is sized and configured to activate switch ( 264 ) after completing a first range of pivotal motion; to activate switches ( 264 , 266 ) after completing a second range of pivotal motion; and to activate switches ( 264 , 266 , 268 ) after completing a third range of pivotal motion.
  • the power level of ultrasonic blade ( 160 ) and/or other operational parameters may again vary based on activation of switches ( 264 , 266 , 268 ).
  • FIGS. 7A-7C show an alternative handle assembly ( 320 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 320 ) of this example includes a body ( 322 ), a pistol grip ( 324 ), and a trigger ( 328 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 320 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 328 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 328 ) toward pistol grip ( 324 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 328 ) away from pistol grip ( 324 ).
  • trigger ( 328 ) may be coupled with trigger ( 328 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 328 ) toward pistol grip ( 324 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 328 ) away from pistol grip ( 324 ).
  • trigger ( 328 ) may be coupled with trigger ( 328 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 328
  • handle assembly ( 120 ) includes two activation buttons ( 126 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power
  • handle assembly ( 320 ) of the present example includes only one activation button ( 326 ).
  • pistol grip ( 324 ) of the present example houses a Hall Effect sensor ( 366 ).
  • Trigger ( 328 ) includes a lever ( 362 ) that is pivotally coupled to body ( 322 ) via pin ( 360 ).
  • a magnet ( 364 ) is unitarily fixed to lever ( 362 ).
  • magnet ( 364 ) is located on lever ( 362 ) such that as trigger ( 328 ) pivots toward pistol grip ( 224 ), magnet ( 364 ) rotates closer to Hall Effect sensor ( 366 ). As magnet ( 364 ) rotates closer to Hall Effect sensor ( 366 ), sensor ( 366 ) varies its output voltage. Hall Effect sensor ( 366 ) is in electrical communication with circuit board ( 34 ). Hall Effect sensor ( 366 ) thereby communicates an output voltage to circuit board ( 34 ) based in part on the distance between magnet ( 364 ) and Hall Effect sensor ( 366 ).
  • Circuit board ( 34 ) is configured to select a specific power level or amplitude of ultrasonic energy based on a range of voltages received from Hall Effect sensor ( 366 ). Thus, when button ( 326 ) is activated while magnet ( 364 ) is within a predetermined distance of Hall Effect sensor ( 366 ), transducer ( 112 ) will provide a corresponding power level or amplitude of ultrasonic energy to ultrasonic blade ( 160 ) based on a control signal from circuit board ( 34 ).
  • tactile feedback may be provided in order to indicate to the operator that trigger ( 328 ) has rotated from one power level to the next.
  • corresponding detents may be placed on pistol grip ( 324 ) and lever ( 362 ), where the detents are configured to interact with each other when trigger ( 328 ) rotates to and from the positions shown in FIGS. 7A-7C . Therefore, the operator will feel a click or sudden increase in physical resistance to further pivoting of trigger ( 328 ) when instrument ( 100 ) transitions from one power level to the next.
  • any distance between magnet ( 364 ) and Hall Effect sensor ( 366 ) may provide a corresponding output voltage that signals to circuit board ( 34 ) to set the desired power level to off. Therefore, if the operator presses button ( 326 ) while the corresponding output voltage sets the desired power level to off, ultrasonic blade ( 160 ) will remain inactive. This may effectively act as a safety switch.
  • the ultrasonic power level may be continuously variable along a range of power, such that the available levels need not necessarily be limited to a specific, discrete number of power levels.
  • the ultrasonic power level may have some proportional relationship with the pivotal position of trigger ( 328 ), since Hall Effect sensor ( 366 ) is capable of generating continuously variable output voltages along a range based on the proximity of magnet ( 364 ) to Hall Effect sensor ( 366 ).
  • Circuit board ( 34 ) and/or Hall Effect sensor ( 366 ) may also be configured such that trigger ( 328 ) is movable through a first range of motion to at least partially pivot clamp arm ( 144 ) toward blade ( 160 ) without providing a selection of an ultrasonic power level.
  • Hall Effect sensor ( 366 ) may be configured such that Hall Effect sensor ( 366 ) does not sense the magnetic field of magnet ( 364 ) and therefore does not generate a voltage until trigger ( 328 ) has moved through the first range of motion.
  • circuit board ( 34 ) may be configured to be essentially non-responsive to voltages from Hall Effect sensor ( 366 ) that fall below a threshold level that is associated with trigger ( 328 ) completing a first range of motion.
  • Hall Effect sensor ( 366 ) is used in the present example to provide contact-less sensing of proximity, it should be understood that other kinds of components may be used to sense the proximity of a portion of trigger ( 328 ) without having to contact trigger ( 328 ).
  • magnet ( 364 ) may be omitted and Hall Effect sensor ( 366 ) may be replaced with a conventional proximity sensor, including but not limited to a capacitive sensor, an inductive sensor, a photocell, etc.
  • Other suitable variations will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • FIGS. 8A-8C show an alternative handle assembly ( 420 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 420 ) of this example includes a body ( 422 ), a pistol grip ( 424 ), and a trigger ( 428 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 420 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 428 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 428 ) toward pistol grip ( 424 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 428 ) away from pistol grip ( 424 ).
  • trigger ( 428 ) may be coupled with trigger ( 428 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 428 ) toward pistol grip ( 424 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 428 ) away from pistol grip ( 424 ).
  • trigger ( 428 ) may be coupled with trigger ( 428 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 428
  • handle assembly ( 120 ) includes two activation buttons ( 126 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power
  • handle assembly ( 420 ) of the present example includes only one activation button ( 426 ).
  • Trigger ( 428 ) of the present example includes a lever ( 462 ) that is pivotally coupled to body ( 422 ) via pin ( 460 ); and a spring loaded torque transducer ( 464 ) associated with lever ( 362 ).
  • Spring loaded torque transducer ( 464 ) is configured to resiliently bias trigger ( 428 ) and lever ( 462 ) to an open or distal position relative to pistol grip ( 424 ).
  • Spring loaded torque transducer ( 464 ) is in electrical communication with circuit board ( 34 ). As trigger ( 428 ) rotates toward pistol grip ( 424 ), as shown in FIGS. 8A-8C , spring loaded torque transducer ( 464 ) imparts a measurable force on trigger ( 428 ) in an attempt to bias trigger ( 428 ) back into the open position. Spring loaded torque transducer ( 464 ) generates a progressively increasing force on trigger ( 428 ) the farther trigger ( 428 ) is displaced from the open position.
  • Spring loaded torque transducer ( 464 ) also generates an electrical output corresponding to the measurable force imparted on trigger ( 428 ) and sends this electrical output to circuit board ( 34 ). Circuit board ( 34 ) may then use the output to select a predetermined power level. Thus, when button ( 426 ) is activated while spring loaded torque transducer ( 464 ) sends a measureable output to circuit board ( 34 ) indicating a specific power level, transducer ( 112 ) will provide a corresponding power level or amplitude of ultrasonic energy to ultrasonic blade ( 160 ) based on a control signal from circuit board ( 34 ).
  • spring loaded torque transducer ( 464 ) when trigger ( 428 ) is in the position shown in FIG. 8A , spring loaded torque transducer ( 464 ) imparts a first measureable force on trigger ( 428 ). Therefore, spring loaded torque transducer ( 464 ) outputs a corresponding electrical output to circuit board ( 34 ).
  • the voltage corresponding to the force generated by spring loaded torque transducer ( 464 ) based on the position of trigger ( 428 ) shown in FIG. 8A may signal to circuit board ( 34 ) to set the desired power level to low. Therefore, if the operator presses button ( 426 ) when trigger ( 428 ) is located at the position shown in FIG. 8A , ultrasonic blade ( 160 ) will activate to the corresponding low power level.
  • spring loaded torque transducer ( 464 ) when trigger ( 428 ) is in the position shown in FIG. 8B , spring loaded torque transducer ( 464 ) imparts a second, greater measureable force on trigger ( 428 ). Therefore, spring loaded torque transducer ( 464 ) outputs a corresponding electrical output to circuit board ( 34 ).
  • the voltage corresponding to the force generated by spring loaded torque transducer ( 464 ) based on the position of trigger ( 428 ) shown in FIG. 8B may signal to circuit board ( 34 ) to set the desired power level to medium. Therefore, if the operator presses button ( 426 ) when trigger ( 428 ) is located at the position shown in FIG. 8B , ultrasonic blade ( 160 ) will activate to the corresponding medium power level.
  • spring loaded torque transducer ( 464 ) when trigger ( 428 ) is in the position shown in FIG. 8C , spring loaded torque transducer ( 464 ) imparts a third, greatest measureable force on trigger ( 428 ). Therefore, spring loaded torque transducer ( 464 ) outputs a corresponding electrical output to circuit board ( 34 ).
  • the voltage corresponding to the force generated by spring loaded torque transducer ( 464 ) based on the position of trigger ( 428 ) shown in FIG. 8C may signal to circuit board ( 34 ) to set the desired power level to high. Therefore, if the operator presses button ( 426 ) when trigger ( 428 ) is located at the position shown in FIG. 8C , ultrasonic blade ( 160 ) will activate to the corresponding high power level.
  • tactile feedback may be provided in order to indicate to the operator that trigger ( 428 ) has rotated from one power level to the next.
  • corresponding detents may be placed on pistol grip ( 424 ) and lever ( 462 ), where the detents are configured to interact with each other when trigger ( 428 ) rotates to and from the positions shown in FIGS. 8A-8C . Therefore, the operator will feel a click or sudden increase in physical resistance to further pivoting of trigger ( 428 ) when instrument ( 100 ) transitions from one power level to the next.
  • a force imparted on trigger ( 428 ) by spring loaded torque transducer ( 464 ) may provide a corresponding output voltage that signals to circuit board ( 34 ) to set the desired power level to off. Therefore, if the operator presses button ( 426 ) while the corresponding output voltage sets the desired power level to off, ultrasonic blade ( 160 ) will remain inactive. This may effectively act as a safety switch.
  • the ultrasonic power level may be continuously variable along a range of power, such that the available levels need not necessarily be limited to a specific, discrete number of power levels.
  • the ultrasonic power level may have some proportional relationship with the pivotal position of trigger ( 428 ), since torque transducer ( 464 ) is capable of generating continuously variable output voltages along a range based on the resistance force imposed on trigger ( 428 ) by torque transducer ( 464 ).
  • Circuit board ( 34 ) and/or torque transducer ( 464 ) may also be configured such that trigger ( 428 ) is movable through a first range of motion to at least partially pivot clamp arm ( 144 ) toward blade ( 160 ) without providing a selection of an ultrasonic power level.
  • torque transducer ( 464 ) may be configured such that torque transducer ( 464 ) does not generate a voltage until trigger ( 428 ) has moved through the first range of motion.
  • circuit board ( 34 ) may be configured to be essentially non-responsive to voltages from torque transducer ( 464 ) that fall below a threshold level that is associated with trigger ( 428 ) completing a first range of motion.
  • torque transducer ( 464 ) may be replaced with a variety of other components.
  • a rotary encoder, rotary potentiometer, rheostat, or other device that is capable of indicating the pivotal position of trigger ( 428 ) may be used in place of torque transducer ( 464 ).
  • Other suitable substitutes will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • handle assembly ( 420 ) provides three discrete power levels in the present example
  • torque transducer ( 464 ) may be used to provide continuous feedback on the pivotal position of trigger ( 428 ), and this feedback may be used to provide a continuously variable power level for blade ( 160 ).
  • the power level may change linearly or otherwise proportionally based on the pivotal position of trigger ( 428 ).
  • circuit board ( 34 ) may still provide a stepped response that mimics discrete switches to provide discrete power levels in response to continuous feedback on the pivotal position of trigger ( 428 ).
  • FIGS. 9A-11 show an alternative handle assembly ( 520 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 520 ) of this example includes a body ( 522 ), a pistol grip ( 524 ), and a trigger ( 528 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 520 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 528 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 528 ) toward pistol grip ( 524 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 528 ) away from pistol grip ( 524 ).
  • trigger ( 528 ) may be coupled with trigger ( 528 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 528 ) toward pistol grip ( 524 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 528 ) away from pistol grip ( 524 ).
  • Various suitable ways in which clamp arm ( 144 ) may be coupled with trigger ( 528 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • handle assembly ( 120 ) includes two activation buttons ( 126 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power
  • handle assembly ( 520 ) of the present example includes only one activation button ( 526 ).
  • pistol grip ( 524 ) of the present example includes a plurality of slots ( 570 ).
  • a button ( 572 ) is rotatably disposed in each slot ( 572 ).
  • rotatable buttons ( 572 ) are capable of rotating from an “activated” position to a “deactivated” position, which in turn may change the functionality of pressing activation button ( 526 ).
  • trigger ( 528 ) further includes a lever ( 562 ) extending distally from trigger ( 528 ); and a finger grip ( 560 ) extending from lever ( 562 ).
  • FIGS. 9A-9C show an exemplary use of handle assembly ( 520 ) incorporated into instrument ( 100 ).
  • trigger ( 528 ) is in an open position relative to pistol grip ( 524 ). Therefore, as described above, clamp arm ( 144 ) is pivoted away from ultrasonic blade ( 160 ).
  • the top and bottom rotatable buttons ( 572 ) are rotated within slots ( 570 ) of pistol grip ( 524 ) to face towards trigger ( 528 ) in such a way as to make contact with the face of trigger ( 528 ) when trigger ( 528 ) is fully pivoted toward pistol grip ( 524 ).
  • the top and bottom rotatable buttons ( 572 ) are in the distally projecting, “activated” position.
  • the middle rotatable button ( 572 ) is rotated within slot ( 570 ) of pistol grip ( 524 ) to face away from trigger ( 528 ) in such a way as to not make contact with the face of trigger ( 528 ) when trigger ( 528 ) is fully pivoted toward pistol grip ( 524 ). Therefore the middle rotatable button ( 572 ) is in the laterally projecting, “deactivated” position. It should be understood that, as shown in FIGS. 10-11 , any number of combinations of rotatable buttons ( 572 ) can be switched to the “activated” and “deactivated” positions.
  • FIG. 9B shows trigger ( 528 ) pivoted to toward pistol grip ( 524 ) to the closed position.
  • a proximal face of trigger ( 528 ) makes contact with the top and bottom rotatable buttons ( 572 ) without making contact with the middle rotatable button ( 572 ).
  • Rotatable buttons ( 572 ) are in electrical communication with circuit board ( 34 ).
  • circuit board ( 34 ) When rotatable buttons ( 572 ) are in the “activated” position, rotatable buttons ( 572 ) send a message to circuit board ( 34 ) when the face of trigger ( 528 ) makes contact with rotatable buttons ( 572 ).
  • Each rotatable button ( 572 ) that is in the “activated” position and in contact with trigger ( 528 ) may be configured to signal to circuit board ( 34 ) to activate or deactivate certain features or modes of operations. Additionally or alternatively, a combination of rotatable buttons ( 572 ) in the “activated” position and in contact with trigger ( 528 ) may be configured to signal to circuit board ( 34 ) to activate or deactivate certain features or modes of operation. Optionally, circuit board ( 34 ) may also be configured to only deactivate certain feature and/or modes of operation when a specific rotatable button ( 572 ) or combinations of rotatable buttons ( 572 ) are in the “activated” position and in contact with trigger ( 528 ). Other functionalities of rotatable buttons ( 572 ) being activated or deactivated will be apparent to one having ordinary skill in the art in view of the teachings herein.
  • a specific individual rotatable button ( 572 ) or combination of rotatable buttons ( 572 ) being rotated into the “activated” position may signal to circuit board ( 34 ), when trigger ( 528 ) is rotated toward pistol grip ( 524 ), to activate a “cool blade after transection” feature.
  • This feature may provide cooling of ultrasonic blade ( 160 ) after end effector ( 140 ) has been used to transect tissue.
  • a specific individual rotatable button ( 572 ) or combination of rotatable buttons ( 572 ) rotated into the activated position may signal to circuit board ( 34 ), when trigger ( 528 ) is rotated toward pistol grip ( 524 ), to activate a feature that leaves blade ( 160 ) hot after a transection.
  • Another specific individual rotatable button ( 572 ) or combination of rotatable buttons ( 572 ) rotated into the activated position may signal to circuit board ( 34 ), when trigger ( 528 ) is rotated toward pistol grip ( 524 ), to activate a low power setting or a high power setting.
  • Lever ( 562 ) may be rotatably coupled to trigger ( 528 ) such that actuation of finger grip ( 560 ) toward trigger ( 528 ) causes lever ( 562 ) to rotate upwardly to make contact with activation button ( 526 ).
  • Lever ( 562 ) may also be biased to the positions shown in FIGS. 9A-9B , such that once the operator releases compression force off finger grip ( 560 ), lever ( 562 ) returns to the positions shown in FIGS. 9A-9B . Any other suitable methods in which lever ( 562 ) and finger grip ( 560 ) activate button ( 526 ) will be apparent to one having ordinary skill in the art in view of the teachings herein.
  • button ( 526 ) may be placed on other locations of body ( 522 ) that obviates the need to have lever ( 526 ) and finger grip ( 560 ), such as the locations where button ( 126 , 226 , 326 , 426 ) is in relation to body ( 122 , 222 , 322 , 422 ) described above.
  • Handle assembly ( 520 ) of the present example further includes an RF activation button ( 574 ).
  • This button ( 574 ) is operable to provide the delivery of RF electrosurgical energy to tissue via end effector ( 140 ).
  • end effector ( 140 ) may be modified to be configured and operable in accordance with at least some of the teachings of U.S. Pat. No. 8,663,220, entitled “Ultrasonic Electrosurgical Instruments,” issued Mar. 4, 2014, the disclosure of which is incorporated by reference herein.
  • button ( 574 ) may be configured and operable in accordance with at least some of the teachings of U.S. Pub. No.
  • button ( 574 ) may be readily incorporated into any of the various other handle assemblies describe herein. It should also be understood that button ( 574 ) may simply be omitted from handle assembly ( 574 ), if desired.
  • the proximal face of trigger ( 528 ) may have one or more discrete buttons that are engaged by whichever rotatable button(s) ( 572 ) is/are rotated to the activated position when trigger ( 528 ) is pivoted toward pistol grip ( 524 ).
  • these buttons on trigger ( 528 ) are actuated simultaneously with whichever rotatable button(s) ( 572 ) is/are rotated to the activated position when trigger ( 528 ) is pivoted toward pistol grip ( 524 ).
  • rotatable buttons ( 572 ) are simply passive stops that activate the buttons on trigger ( 528 ), such that rotatable buttons ( 572 ) are not capable of themselves being actuated.
  • FIGS. 12A-12C show an alternative handle assembly ( 620 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 620 ) of this example includes a body ( 622 ), a pistol grip ( 624 ), and a trigger ( 628 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 620 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 628 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 628 ) toward pistol grip ( 624 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 628 ) away from pistol grip ( 624 ).
  • trigger ( 628 ) may be coupled with trigger ( 628 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 628 ) toward pistol grip ( 624 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 628 ) away from pistol grip ( 624 ).
  • Various suitable ways in which clamp arm ( 144 ) may be coupled with trigger ( 628 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • handle assembly ( 120 ) includes two activation buttons ( 126 ) located on body ( 122 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power; handle assembly ( 620 ) of the present example includes only one activation button ( 626 ) located on the area of pistol grip ( 624 ) facing trigger ( 628 ).
  • Activation button ( 626 ) is positioned to make contact with the bottom end of trigger ( 628 ) when trigger ( 628 ) is pivoted almost fully toward pistol grip ( 624 ).
  • Activation button ( 626 ) is positioned within a damping system ( 625 ) that is fixed to pistol grip ( 624 ).
  • Damping system ( 625 ) of the present example comprises a dashpot that resists motion of activation button ( 626 ) via viscous friction.
  • the resistance force imparted by damping system ( 625 ) against activation button ( 626 ) is proportional to the velocity of button ( 626 ).
  • damping system ( 625 ) Various suitable components and configurations that may be used to form damping system ( 625 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • Activation button ( 626 ) is configured to activate ultrasonic blade ( 160 ) once activation button ( 626 ) is sufficiently actuated within damping system ( 625 ). Therefore, pivoting trigger ( 628 ) toward pistol grip ( 624 ) will compress activation button ( 626 ) within damping system ( 625 ) in order to activate ultrasonic blade ( 160 ). However, as noted above and as will be described in greater detail below, damping system ( 625 ) is configured to at least partially prevent activation of ultrasonic blade ( 160 ) if trigger ( 628 ) pivots too quickly toward pistol grip ( 624 ).
  • FIG. 12A shows trigger ( 628 ) in an open position relative to pistol grip ( 624 ), such that trigger ( 628 ) does not make contact with activation button ( 626 ).
  • FIG. 12B shows trigger ( 628 ) pivoting toward pistol grip ( 624 ) to initially contact activation button ( 626 ).
  • trigger ( 628 ) imparts a force to actuate activation button ( 626 ) within damping system ( 625 ) in an attempt to sufficiently compress activation button ( 626 ) within damping system ( 625 ) to activate ultrasonic blade ( 160 ).
  • damping system ( 625 ) provides a responding force to the force imparted on activation button ( 626 ) by trigger ( 628 ).
  • damping system ( 625 ) The responding force provided by damping system ( 625 ) is proportionate to how quickly trigger ( 628 ) rotates toward pistol grip ( 624 ). Therefore, if the operator rotates trigger ( 628 ) toward pistol grip ( 624 ) with too much rotational velocity, damping system ( 625 ) will sufficiently prevent activation button ( 626 ) from activating ultrasonic blade ( 160 ), at least for a moment. However, as shown in FIG.
  • button ( 626 ) will sufficiently compress within damping system ( 62 ) in order to activate ultrasonic blade ( 160 ).
  • damping system ( 625 ) may be implemented in any activation button ( 126 , 226 , 326 , 426 , 626 , 726 , 926 ) or any other buttons ( 572 , 1062 , 1064 , 1066 ) mentioned herein.
  • FIGS. 13A-13C show an alternative handle assembly ( 720 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 720 ) of this example includes a body ( 722 ), a pistol grip ( 724 ), and a trigger ( 728 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 720 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 728 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 728 ) toward pistol grip ( 724 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 728 ) away from pistol grip ( 724 ).
  • trigger ( 728 ) may be coupled with trigger ( 728 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 728 ) toward pistol grip ( 724 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 728 ) away from pistol grip ( 724 ).
  • trigger ( 728 ) may be coupled with trigger ( 728 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 728
  • handle assembly ( 120 ) includes two activation buttons ( 126 ) located on body ( 122 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power
  • handle assembly ( 720 ) of the present example includes only one activation button ( 726 ) located on the area of pistol grip ( 726 ) facing trigger ( 728 ).
  • Handle assembly ( 720 ) also includes an activation trigger ( 760 ) that is pivotable toward and away from pistol grip ( 724 ).
  • activation button ( 726 ) is positioned within pistol grip ( 724 ) to make contact with activation trigger ( 760 ) when activation trigger ( 760 ) pivots towards pistol grip ( 724 ).
  • Activation trigger ( 760 ) is thus capable of compressing activation button ( 726 ) in order to activate ultrasonic blade ( 160 ).
  • Trigger ( 728 ) includes a rotation stop ( 727 ) and a slot ( 729 ).
  • Activation trigger ( 760 ) includes a projection ( 762 ) slidably housed within slot ( 729 ).
  • slot ( 729 ) and projection ( 762 ) may have complementary dovetail configurations, complementary “T” shaped configurations, or any other suitable configurations.
  • trigger and activation trigger ( 760 ) are configured to unitarily travel with each other until rotation stop ( 727 ) of trigger ( 728 ) makes contact with pistol grip ( 724 ).
  • trigger ( 728 ) is prevented from further rotation toward pistol grip ( 724 ).
  • clamp arm ( 144 ) is sufficiently pivoted toward blade ( 160 ) to grasp tissue.
  • activation button ( 726 ) is not yet compressed by activation trigger ( 760 ), yet trigger ( 728 ) is sufficiently rotated so that end effector ( 140 ) may grasp tissue. Therefore, the operator may grasp tissue utilizing handle assembly ( 720 ) without yet activating ultrasonic blade ( 160 ).
  • the operator may grasp both trigger ( 728 ) and activation trigger ( 760 ) to pivot trigger ( 728 ) and activation trigger ( 760 ) unitarily. Alternatively, the operator may grasp only trigger ( 728 ) to pivot both trigger ( 728 ) and activation trigger ( 760 ) from the position shown in FIG. 13A to the position shown in FIG. 13B . If the operator only grasps trigger ( 728 ) to pivot both trigger ( 728 ) and activation trigger ( 760 ), the distal end of slot ( 729 ) may make contact with protrusion ( 762 ) to thereby move activation trigger ( 760 ) from the position shown in FIG. 13A to the position shown in FIG. 13B .
  • activation trigger ( 760 ) may further actuate activation trigger ( 760 ) relative to trigger ( 728 ) after reaching the state shown in FIG. 13B .
  • Protrusion ( 762 ) slides within slot ( 729 ) or trigger ( 728 ), thereby enabling further actuation of activation trigger ( 760 ) relative to trigger ( 728 ).
  • Activation trigger ( 760 ) is configured to actuate toward, and make contact with, pistol grip ( 724 ).
  • Activation button ( 726 ) is located on a portion of pistol grip ( 724 ) facing activation trigger ( 760 ), such that complete actuation of activation trigger ( 760 ) compresses activation button ( 726 ), thereby activation ultrasonic blade ( 160 ).
  • trigger ( 728 ) and activation trigger ( 760 ) slidably coupled together by slot ( 729 ) and protrusion ( 762 )
  • any other suitable manner of sildably coupling trigger ( 728 ) and activation trigger ( 760 ) may be utilized.
  • trigger ( 728 ) and activation trigger ( 760 ) may be coupled by a spring that biases trigger ( 728 ) and activation trigger ( 760 ) together.
  • activation trigger ( 760 ) may travel from the position shown in FIG. 13B to the position shown in FIG. 13C by the operator overcoming the biasing force coupling trigger ( 728 ) and activation trigger ( 760 ).
  • FIGS. 14A-14C show an alternative handle assembly ( 820 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 820 ) of this example includes a body ( 822 ), a pistol grip ( 824 ), and a trigger ( 828 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 820 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 828 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 828 ) toward pistol grip ( 824 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 828 ) away from pistol grip ( 824 ).
  • trigger ( 828 ) may be coupled with trigger ( 828 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 828 ) toward pistol grip ( 824 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 828 ) away from pistol grip ( 824 ).
  • trigger ( 828 ) may be coupled with trigger ( 828 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 828
  • handle assembly ( 120 ) includes two activation buttons ( 126 ) located on body ( 122 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power; handle assembly ( 820 ) of the present example has no activation button. Instead, handle assembly ( 820 ) of this example has an activation trigger ( 826 ).
  • Trigger ( 828 ) is pivotable toward and away from pistol grip ( 824 ) independently of activation trigger ( 826 ).
  • Activation trigger ( 826 ) is located distally in relation to trigger ( 828 ).
  • the bottom ends of trigger ( 828 ) and activation trigger ( 826 ) are in contact in the position shown in FIG. 14A in this example. However, this relationship is merely optional, as ends of trigger ( 828 ) and activation trigger ( 826 ) may be distanced apart from one another in some other variations.
  • FIG. 14A shows trigger ( 828 ) in the open position.
  • trigger ( 282 ) With trigger ( 282 ) at the position shown in FIG. 14A , clamp arm ( 144 ) is pivoted away from ultrasonic blade ( 160 ). Additionally, activation trigger ( 826 ) is also in the open position. When activation trigger ( 826 ) is in the open position, ultrasonic blade ( 160 ) is not activated.
  • trigger ( 828 ) may pivot toward pistol grip ( 824 ) in order to pivot clamp arm ( 144 ) toward ultrasonic blade ( 160 ).
  • end effector ( 140 ) is capable of grasping tissue.
  • activation trigger ( 826 ) is still in the open position. Therefore, ultrasonic blade ( 160 ) is not yet activated.
  • the operator may thus pivot trigger ( 828 ) toward pistol grip ( 824 ) in order to grasp and manipulate tissue without activating ultrasonic blade ( 160 ).
  • Trigger ( 828 ) may also be selectively latched closed so that the operator no longer has to grasp trigger ( 828 ) in order to grasp tissue with end effector ( 140 ).
  • activation trigger ( 826 ) is rotated toward pistol grip ( 824 ) while trigger ( 828 ) remains pivoted toward pistol grip ( 824 ). At this position, activation trigger ( 826 ) is rotated to an “activated” position, thereby activating ultrasonic blade ( 160 ). While current FIGS.
  • FIGS. 14A-14C show trigger ( 828 ) pivoting toward pistol grip ( 824 ) first to grasp tissue, and then activation trigger ( 826 ) pivoting toward pistol grip ( 824 ) independently to activate ultrasonic blade ( 160 ), the operator may choose to simply actuate activation trigger ( 826 ) to thereby rotate both trigger ( 828 ) and activation trigger ( 826 ) simultaneously, to thereby grasp tissue and activate ultrasonic blade ( 160 ) simultaneously.
  • activation trigger ( 826 ) may be utilized in place of activation button ( 126 , 226 , 326 , 426 , 526 , 626 , 726 , 926 ) in handle assembly ( 120 , 220 , 320 , 420 , 520 , 620 , 720 , 920 ) respectively.
  • FIGS. 15A-18B show an alternative handle assembly ( 920 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 920 ) of this example includes a body ( 922 ), a pistol grip ( 924 ), and a trigger ( 928 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 920 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 928 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 928 ) toward pistol grip ( 924 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 928 ) away from pistol grip ( 924 ).
  • trigger ( 928 ) may be coupled with trigger ( 928 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 928 ) toward pistol grip ( 924 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 928 ) away from pistol grip ( 924 ).
  • trigger ( 928 ) may be coupled with trigger ( 928 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 928
  • trigger ( 928 ) is configured to pivot along two different dimensions.
  • trigger ( 928 ) is configured to pivot along a first dimension toward and away from pistol grip ( 924 ), just like the other triggers described herein.
  • trigger ( 928 ) of the present example is also configured to pivot along a second dimension that is perpendicular to the first dimension.
  • trigger ( 928 ) is operable to pivot along a plane that is laterally oriented relative to the longitudinal axis of shaft assembly ( 130 ); in addition to being operable to pivot along a plane that is parallel to the longitudinal axis of shaft assembly ( 130 ).
  • handle assembly ( 120 ) includes two activation buttons ( 126 ) located on body ( 122 ), with one button ( 126 ) activating blade ( 160 ) at a low power and another button ( 126 ) activating blade ( 160 ) at a high power; handle assembly ( 920 ) includes only one activation button ( 926 ).
  • body ( 922 ) of the present example houses a mode selection frame ( 960 ) having three individual power switches ( 961 , 963 , 965 ).
  • Trigger ( 928 ) is fixed to a projection ( 970 ) that extends through a slot ( 923 ) of body ( 922 ).
  • a bridge ( 972 ) is attached to the top of projection ( 970 ).
  • Bridge ( 972 ) is housed within mode selection frame ( 960 ). As will be described in greater detail below, bridge ( 972 ) is configured to make contact with an individual power switch ( 961 , 963 , 965 ) to determine the power level at which ultrasonic blade ( 160 ) operates.
  • bridge ( 972 ) is located within mode selection frame ( 960 ) such that as trigger ( 928 ) pivots toward pistol grip ( 924 ), bridge ( 972 ) travels within mode selection frame ( 960 ) to make contact with one of power switches ( 961 , 963 , 965 ).
  • bridge ( 972 ) may only activate one power switch ( 961 , 963 , 965 ) at a time, corresponding to the lateral pivoting location of trigger ( 928 ) relative to body ( 922 ).
  • Individual switches ( 961 , 963 , 965 ) are in electrical communication with circuit board ( 34 ).
  • Trigger ( 928 ) may pivot laterally relative to body ( 922 ) within slot ( 923 ).
  • projection ( 970 ) extends within body ( 922 ) through slot ( 923 ). Therefore, projection ( 970 ) is located above slot ( 923 ), while trigger ( 928 ) is located below slot ( 923 ).
  • trigger ( 928 ) pivots laterally to the left of body ( 922 ) below slot ( 923 )
  • projection ( 970 ) pivots laterally to the right of body ( 922 ) above slot ( 923 ).
  • bridge ( 972 ) is fixed to the top of projection ( 970 ), such that bridge ( 972 ) pivots laterally relative to body ( 922 ) with projection ( 970 ).
  • mode selection frame ( 960 ) defines a lateral deflection channel ( 968 ), a low guide channel ( 962 ), a medium guide channel ( 964 ), and a high guide channel ( 966 ).
  • bridge ( 972 ) is housed within mode selection frame ( 960 ) such that bridge ( 972 ) may travel within each channel ( 962 , 964 , 966 , 968 ).
  • Low switch ( 963 ) is fixed at the proximal end of low guide channel ( 962 ).
  • Medium switch ( 965 ) is fixed at the proximal end of medium guide channel ( 964 ).
  • High switch ( 967 ) is fixed at the proximal end of high guide channel ( 966 ).
  • FIGS. 15A, 16A, 17A, and 18A when trigger ( 928 ) is in the open position relative to pistol grip ( 924 ), bridge ( 972 ) is located within lateral deflection channel ( 968 ) of mode selection frame ( 960 ). Trigger ( 928 ) is operable to pivot laterally when bridge ( 972 ) is located within lateral deflection channel ( 968 ).
  • FIG. 16A shows trigger ( 928 ), projection ( 970 ), and bridge ( 972 ) having no lateral deflection relative to body ( 922 ). Bridge ( 972 ) is therefore longitudinally aligned with medium guide channel ( 964 ).
  • 16B shows trigger ( 928 ) pivoted toward pistol grip ( 924 ), as also shown in FIG. 15B .
  • trigger ( 928 ) is not laterally deflected to rotate about slot ( 923 )
  • bridge ( 972 ) longitudinally travels in the proximal direction within medium guide channel ( 964 ) to make contact with medium switch ( 965 ).
  • medium switch ( 963 ) is activated by making contact with bridge ( 972 ).
  • Medium switch ( 963 ) thereby communicates a medium power level to circuit board ( 34 ).
  • activation of button ( 926 ) while bridge ( 972 ) is in contact with medium switch ( 963 ) will activate ultrasonic blade ( 160 ) at a medium power level.
  • FIG. 17A shows trigger ( 928 ) pivoted laterally to the left of body ( 922 ) below slot ( 923 ). Therefore, projection ( 970 ) and bridge ( 972 ) are laterally rotated to the right relative to body ( 922 ) above slot ( 923 ). Bridge ( 972 ) is therefore longitudinally aligned with low guide channel ( 962 ) in this state.
  • FIG. 17B shows trigger ( 928 ) pivoted toward pistol grip ( 924 ), as also shown in FIG. 15B . Bridge ( 972 ) longitudinally travels in the proximal direction within low guide channel ( 962 ) to make contact with low switch ( 961 ). At this point, low switch ( 961 ) is activated by making contact with bridge ( 972 ).
  • Low switch ( 961 ) thereby communicates a low power level to circuit board ( 34 ).
  • activation of button ( 926 ) while bridge ( 972 ) is in contact with low switch ( 961 ) will activate ultrasonic blade ( 160 ) at a low power level.
  • FIG. 18A shows trigger ( 928 ) pivoted laterally to the right of body ( 922 ) below slot ( 923 ). Therefore, projection ( 970 ) and bridge ( 972 ) are laterally rotated to the left relative to body ( 922 ) above slot ( 923 ). Bridge ( 972 ) is therefore longitudinally aligned with high guide channel ( 966 ) in this state.
  • FIG. 18B shows trigger ( 928 ) pivoted toward pistol grip ( 924 ), as also shown in FIG. 15B . Bridge ( 972 ) longitudinally travels in the proximal direction within high guide channel ( 966 ) to make contact with high switch ( 965 ). At this point, high switch ( 965 ) is activated by making contact with bridge ( 972 ).
  • High switch ( 965 ) thereby communicates a high power level to circuit board ( 34 ).
  • activation of button ( 926 ) while bridge ( 972 ) is in contact with high switch ( 965 ) will activate ultrasonic blade ( 160 ) at a high power level.
  • trigger ( 928 ) pivoting laterally within slot ( 923 ) relative to body ( 922 )
  • trigger ( 928 ) may alternatively translate laterally within slot ( 923 ) relative to body ( 922 ). Therefore, if trigger ( 928 ) is translated laterally to the right below slot ( 923 ), projection ( 970 ) and bridge ( 972 ) will also translate laterally to the right above slot ( 923 ).
  • FIGS. 19A-20 show an alternative handle assembly ( 1020 ) that may be incorporated into ultrasonic surgical instrument ( 100 ) described above.
  • handle assembly ( 1020 ) of this example includes a body ( 1022 ), a pistol grip ( 1024 ), and a trigger ( 1028 ). These components are substantially similar to body ( 122 ), pistol grip ( 124 ), and trigger ( 128 ) described above, with the differences described below.
  • Handle assembly ( 1020 ) also receives an ultrasonic transducer ( 112 ), just like handle assembly ( 120 ) described above.
  • clamp arm ( 144 ) may be coupled with trigger ( 1028 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 1028 ) toward pistol grip ( 1024 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 1028 ) away from pistol grip ( 1024 ).
  • trigger ( 1028 ) may be coupled with trigger ( 1028 ) such that clamp arm ( 144 ) is pivotable toward ultrasonic blade ( 160 ) in response to pivoting of trigger ( 1028 ) toward pistol grip ( 1024 ); and such that clamp arm ( 144 ) is pivotable away from ultrasonic blade ( 160 ) in response to pivoting of trigger ( 1028 ) away from pistol grip ( 1024 ).
  • Various suitable ways in which clamp arm ( 144 ) may be coupled with trigger ( 1028 ) will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • Trigger assembly ( 1028 ) of the present example comprise a tri-lever trigger that is pivotally coupled to body ( 1022 ) such that trigger assembly ( 1028 ) is capable of pivoting toward and away from pistol grip ( 1024 ).
  • one or more resilient members are used to bias trigger assembly ( 1028 ) to the open position, as shown in FIGS. 19A and 20 .
  • Trigger assembly ( 1028 ) includes a short trigger ( 1072 ), a medium trigger ( 1074 ), and a long trigger ( 1076 ). As best seen in FIG. 20 , individual triggers ( 1072 , 1074 , 1076 ) are in a stacked arrangement.
  • short trigger ( 1072 ) is located proximally in relation to medium trigger ( 1074 ), which is located proximally in relation to long trigger ( 1076 ).
  • pivoting long trigger ( 1076 ) toward pistol grip ( 1024 ) forces both medium trigger ( 1074 ) and short trigger ( 1072 ) to also pivot toward pistol grip ( 1024 ).
  • pivoting medium trigger ( 1074 ) toward pistol grip ( 1024 ) forces short trigger ( 1072 ) to pivot toward pistol grip ( 1024 ), but does not force long trigger ( 1076 ) to pivot toward pistol grip ( 1024 ).
  • Pivoting short trigger ( 1072 ) toward pistol grip ( 1024 ) does not force longer trigger ( 1076 ) or medium trigger ( 1074 ) to pivot toward pistol grip ( 1024 ).
  • triggers ( 1072 , 1074 , 1076 ) are arranged such that pivotal movement of one trigger ( 1072 , 1074 , 1076 ) does not necessarily force pivotal movement of any other trigger ( 1072 , 1074 , 1076 ).
  • the operator may nevertheless pivot more than one trigger ( 1072 , 1074 , 1076 ) simultaneously by engaging more than one trigger ( 1072 , 1074 , 1076 ) with the operator's hand.
  • Button ( 1062 ) is positioned to be actuated by trigger ( 1072 ) when short trigger ( 1072 ) pivots toward pistol grip ( 1024 ).
  • Button ( 1064 ) is positioned to be actuated by medium trigger ( 1074 ) when medium trigger ( 1074 ) pivots toward pistol grip ( 1024 ).
  • Button ( 1066 ) is positioned to be actuated by long trigger ( 1076 ) when long trigger ( 1076 ) pivots toward pistol grip ( 1024 ).
  • buttons ( 1062 , 1064 , 1066 ) are located along pistol grip ( 1024 ) in the present example, buttons ( 1062 , 1064 , 1066 ) may instead be located along any suitable location of handle assembly ( 1020 ) in order to make selective contact with triggers ( 1072 , 1074 , 1076 ), respectively, when triggers ( 1072 , 1074 , 1076 ) are pivoted toward pistol grip ( 1024 ).
  • each trigger ( 1072 , 1074 , 1076 ) is independently capable of pivoting clamp arm ( 144 ) toward blade ( 160 ).
  • clamp arm ( 144 ) may be pivoted toward blade ( 160 ) regardless of which trigger ( 1072 , 1074 , 1076 ) or combination of triggers ( 1072 , 1074 , 1076 ) is pivoted toward pistol grip ( 1024 ). In some other versions, only one or two of triggers ( 1072 , 1074 , 1076 ) is operable to pivot clamp arm ( 144 ) toward blade ( 160 ).
  • the other trigger ( 1072 , 1074 , 1076 ) or triggers ( 1072 , 1074 , 1076 ) merely activates/activate an energized state at end effector ( 140 ) (e.g., vibration of blade ( 160 ) and/or application of RF electrosurgical energy through end effector ( 140 ), etc.).
  • Buttons ( 1062 , 1064 , 1066 ) are in electrical communication with circuit board ( 34 ) in order to control various functions of instrument ( 100 ) when buttons ( 1062 , 1064 , 1066 ) are pressed or released by triggers ( 1072 , 1074 , 1076 ).
  • FIGS. 19A-19D show one such example.
  • trigger assembly ( 1028 ) is in an open position, such that short trigger ( 1072 ), medium trigger ( 1074 ), and long trigger ( 1076 ) are not in contact with respective buttons ( 1062 , 1064 , 1066 ).
  • FIG. 19A trigger assembly ( 1028 ) is in an open position, such that short trigger ( 1072 ), medium trigger ( 1074 ), and long trigger ( 1076 ) are not in contact with respective buttons ( 1062 , 1064 , 1066 ).
  • FIG. 19A trigger assembly ( 1028 ) is in an open position, such that short trigger ( 1072 ), medium trigger ( 1074 ), and long trigger ( 1076 ) are
  • the operator may pivot the entire trigger assembly ( 1028 ) toward pistol grip ( 1024 ) such that short trigger ( 1072 ) makes contact with button ( 1062 ), medium trigger ( 1074 ) makes contact with button ( 1064 ), and long trigger ( 1076 ) makes contact with button ( 1072 ).
  • Clamp arm ( 144 ) closes toward blade ( 160 ) as triggers ( 1072 , 1074 , 1076 ) pivot toward the position of FIG. 19B .
  • circuit board ( 34 ) activates transducer ( 112 ) to drive blade ( 160 ) to vibrate ultrasonically at a high level of power.
  • handle assembly ( 1020 ) includes one or more tactile feedback features and/or latching features that provide tactile feedback and/or selectively lock triggers ( 1072 , 1074 , 1076 ) in place when triggers ( 1072 , 1074 , 1076 ) reach the position shown in FIG. 19B .
  • handle assembly ( 1020 ) transitions directly from the state shown in FIG. 19A to the state shown in FIG. 19B .
  • handle assembly ( 1020 ) may transition from the state shown in FIG. 19C or the state shown in FIG. 19D to the state shown in FIG. 19B . It should therefore be understood that the operator may adjust the power level of ultrasonic blade ( 160 ) while tissue is being compressed against blade ( 160 ) by clamp arm ( 144 ).
  • FIG. 19C shows handle assembly ( 1020 ) in a state where only triggers ( 1072 , 1074 ) have been pivoted toward pistol grip ( 1024 ). Again, clamp arm ( 144 ) closes toward blade ( 160 ) as triggers ( 1072 , 1074 ) pivot toward the position of FIG. 19C . With only buttons ( 1062 , 1064 ) being activated, circuit board ( 34 ) activates transducer ( 112 ) to drive blade ( 160 ) to vibrate ultrasonically at a medium level of power.
  • handle assembly ( 1020 ) includes one or more tactile feedback features and/or latching features that provide tactile feedback and/or selectively lock triggers ( 1072 , 1074 ) in place when triggers ( 1072 , 1074 ) reach the position shown in FIG. 19C .
  • handle assembly ( 1020 ) transitions directly from the state shown in FIG. 19A to the state shown in FIG. 19C .
  • handle assembly ( 1020 ) may transition from the state shown in FIG. 19B or the state shown in FIG. 19D to the state shown in FIG. 19C . It should therefore be understood that the operator may adjust the power level of ultrasonic blade ( 160 ) while tissue is being compressed against blade ( 160 ) by clamp arm ( 144 ).
  • FIG. 19D shows handle assembly ( 1020 ) in a state where only trigger ( 1072 ) has been pivoted toward pistol grip ( 1024 ). Again, clamp arm ( 144 ) closes toward blade ( 160 ) as trigger ( 1072 ) pivots toward the position of FIG. 19D . With only button ( 1062 ) being activated, circuit board ( 34 ) activates transducer ( 112 ) to drive blade ( 160 ) to vibrate ultrasonically at a low level of power.
  • handle assembly ( 1020 ) includes one or more tactile feedback features and/or latching features that provide tactile feedback and/or selectively lock trigger ( 1072 ) in place when trigger ( 1072 ) reaches the position shown in FIG. 19D .
  • handle assembly ( 1020 ) transitions directly from the state shown in FIG. 19A to the state shown in FIG. 19D . In some other instances, handle assembly ( 1020 ) may transition from the state shown in FIG. 19B or the state shown in FIG. 19B to the state shown in FIG. 19D . It should therefore be understood that the operator may adjust the power level of ultrasonic blade ( 160 ) while tissue is being compressed against blade ( 160 ) by clamp arm ( 144 ).
  • handle assembly ( 1020 ) is incorporated into an instrument with an end effector that is operable to apply RF electrosurgical energy to tissue, in addition to or as an alternative to being operable to apply ultrasonic energy to tissue.
  • at least one button ( 1062 , 1064 , 1066 ) may be configured to trigger the activation of one or more RF electrosurgical electrodes in the end effector.
  • at least one trigger ( 1072 , 1074 , 1076 ) may be specifically associated with activating RF electrosurgical features.
  • handle assembly ( 1020 ) may be incorporated into an instrument with an end effector that has a translating knife member instead of ultrasonic blade ( 160 ).
  • Such a translating knife member may be configured to sever tissue and may be driven by a motor.
  • at least one button ( 1062 , 1064 , 1066 ) may be configured to trigger the activation of the motor.
  • at least one trigger 1072 , 1074 , 1076 ) may be specifically associated with driving the knife member to sever tissue.
  • a surgical instrument comprising: (a) an end effector, wherein the end effector is configured to operate at a first energy level and at a second energy level, wherein the end effector is further configured to transition between an open position and a closed position, wherein the end effector is configured to grasp tissue in the closed position; and (b) a handle assembly, wherein the handle assembly comprises: (i) a body, (ii) a trigger pivotally coupled to the body, wherein the trigger is configured to pivot in a first direction relative to the body to actuate the end effector from the open position to the closed position, and (ii) an activation element, wherein the activation element is in communication with the end effector, wherein the activation element is configured to activate the end effector at either the first energy level or the second energy level, wherein the trigger is configured to either activate the activation element or determine whether the end effector operates at the first energy level or the second energy level.
  • Example 1 The surgical instrument of Example 1, wherein the trigger is configured to pivot in the first direction to a first position, wherein the trigger is configured to pivot further in the first direction to a second position, wherein the end effector is configured to operate at the first energy level when the trigger is located at the first position, wherein the end effector is configured to operate at the second energy level when the trigger is located at the second position.
  • Example 2 The surgical instrument of Example 2, wherein the body further comprises a first switch and a second switch, wherein the trigger is configured to activate the first switch when the trigger reaches the first position, wherein the trigger is configured to activate the second switch when the trigger reaches the second position.
  • the body comprises a damping system, wherein the activation element is coupled with the damping system, wherein the damping system is configured to prevent activation of the activation element if the trigger contacts the activation element at a velocity above a threshold.
  • the body further comprises: (i) a pistol grip defining a first slot and a second slot, (ii) a first movable button housed within the first slot, wherein the first movable button is configured to move from an activated state to a deactivated state, and (iii) a second movable button housed within the second slot, wherein the second movable button is configured to move from an activated state to a deactivated state.
  • Example 7 The surgical instrument of Example 7, wherein the trigger is configured to pivot in the first direction toward the pistol grip to contact the first moveable button or the second movable button when the first moveable button or the second movable button are in the activated state.
  • Example 8 The surgical instrument of Example 8, wherein the first movable button is configured to rotate about a pivot in the first slot.
  • the trigger comprises a first grip and a second grip, wherein the first grip is configured to actuate the end effector from the open position to the closed position, wherein the second grip is configured to activate the activation element.
  • the trigger is further configured to move in a second direction relative to the body, wherein the trigger is configured to determine whether the end effector operates at the first energy level or the second energy level based on a position of the trigger in the second direction.
  • Example 14 The surgical instrument of Example 14, wherein the body further comprise a mode selection frame, wherein a portion of the trigger is housed within the mode selection frame.
  • the mode selection frame comprises a mode selection channel, a first energy channel, and a second energy channel, wherein the portion of the trigger housed within the mode selection frame is configured to travel in the mode selection channel when the trigger moves in the second direction, wherein the portion of the trigger housed within the mode selection frame is configured to travel in either the first energy channel or the second energy channel when the trigger moves in the first direction.
  • a surgical instrument comprising: (a) an end effector, wherein the end effector is configured to operate at a first energy level and at a second energy level, wherein the end effector is further configured to transition between an open position and a closed position, wherein the end effector is configured to grasp tissue in the closed position; and (b) a handle assembly, wherein the handle assembly comprises: (i) a body comprising a first button, a second button, and a third button, wherein each button is configured to provide a respective activated state of the end effector, and (ii) a trigger assembly pivotally coupled to the body, wherein the trigger assembly further comprises: (A) a first trigger configured pivot from a first open position to a first closed position, wherein the first trigger is configured to contact the first button in the first closed position, (B) a second trigger configured to pivot from a second open position to a second closed position, wherein the second trigger is configured to contact the second button in the second closed position, wherein the second trigger is shorter than the first trigger, and (
  • a surgical instrument comprising: (a) an end effector, wherein the end effector is configured to operate at a first energy level and at a second energy level, wherein the end effector is further configured to transition between an open position and a closed position, wherein the end effector is configured to grasp tissue in the closed position; and (b) a handle assembly, wherein the handle assembly comprises: (i) a body, (ii) a trigger pivotally coupled to the body, wherein the trigger is configured to pivot in a first direction relative to the body to actuate the end effector from the open position to the closed position, wherein the trigger is configured to actuate in a second direction relative to the body to select whether the end effector operates at the first energy level or the second energy level, and (ii) an activation element, wherein the activation element is in communication with the end effector, wherein the activation element is configured to activate the end effector at either the first energy level or the second energy level.
  • any of the versions of instruments described herein may include various other features in addition to or in lieu of those described above.
  • any of the instruments described herein may also include one or more of the various features disclosed in any of the various references that are incorporated by reference herein.
  • teachings herein may be readily applied to any of the instruments described in any of the other references cited herein, such that the teachings herein may be readily combined with the teachings of any of the references cited herein in numerous ways.
  • Other types of instruments into which the teachings herein may be incorporated will be apparent to those of ordinary skill in the art.
  • any ranges of values referred to herein should be read to include the upper and lower boundaries of such ranges. For instance, a range expressed as ranging “between approximately 1.0 inches and approximately 1.5 inches” should be read to include approximately 1.0 inches and approximately 1.5 inches, in addition to including the values between those upper and lower boundaries.
  • Versions of the devices described above may have application in conventional medical treatments and procedures conducted by a medical professional, as well as application in robotic-assisted medical treatments and procedures.
  • various teachings herein may be readily incorporated into a robotic surgical system such as the DAVINCITM system by Intuitive Surgical, Inc., of Sunnyvale, Calif.
  • DAVINCITM system by Intuitive Surgical, Inc., of Sunnyvale, Calif.
  • teachings herein may be readily combined with various teachings of U.S. Pat. No. 6,783,524, entitled “Robotic Surgical Tool with Ultrasound Cauterizing and Cutting Instrument,” published Aug. 31, 2004, the disclosure of which is incorporated by reference herein.
  • Versions described above may be designed to be disposed of after a single use, or they can be designed to be used multiple times. Versions may, in either or both cases, be reconditioned for reuse after at least one use. Reconditioning may include any combination of the steps of disassembly of the device, followed by cleaning or replacement of particular pieces, and subsequent reassembly. In particular, some versions of the device may be disassembled, and any number of the particular pieces or parts of the device may be selectively replaced or removed in any combination. Upon cleaning and/or replacement of particular parts, some versions of the device may be reassembled for subsequent use either at a reconditioning facility, or by an operator immediately prior to a procedure.
  • reconditioning of a device may utilize a variety of techniques for disassembly, cleaning/replacement, and reassembly. Use of such techniques, and the resulting reconditioned device, are all within the scope of the present application.
  • versions described herein may be sterilized before and/or after a procedure.
  • the device is placed in a closed and sealed container, such as a plastic or TYVEK bag.
  • the container and device may then be placed in a field of radiation that can penetrate the container, such as gamma radiation, x-rays, or high-energy electrons.
  • the radiation may kill bacteria on the device and in the container.
  • the sterilized device may then be stored in the sterile container for later use.
  • a device may also be sterilized using any other technique known in the art, including but not limited to beta or gamma radiation, ethylene oxide, or steam.

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US14/972,920 2015-12-17 2015-12-17 Surgical instrument with multi-functioning trigger Abandoned US20170172614A1 (en)

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US14/972,920 US20170172614A1 (en) 2015-12-17 2015-12-17 Surgical instrument with multi-functioning trigger
MA044071A MA44071A (fr) 2015-12-17 2016-12-14 Instrument chirurgical à gâchette multifonction
PCT/US2016/066468 WO2017106238A1 (en) 2015-12-17 2016-12-14 Surgical instrument with multi-functioning trigger
BR112018012281-5A BR112018012281B1 (pt) 2015-12-17 2016-12-14 Instrumento cirúrgico com gatilho multifuncional
JP2018531501A JP6896736B2 (ja) 2015-12-17 2016-12-14 多機能性トリガを伴う外科用器具
EP16829163.1A EP3389518B1 (en) 2015-12-17 2016-12-14 Surgical instrument with multi-functioning trigger
CN201680073879.XA CN108366812B (zh) 2015-12-17 2016-12-14 具有多功能触发器的外科器械
US16/784,428 US11745031B2 (en) 2015-12-17 2020-02-07 Surgical instrument with multi-functioning trigger
US18/350,322 US20230381547A1 (en) 2015-12-17 2023-07-11 Surgical instrument with multi-functioning trigger

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CN108366812A (zh) 2018-08-03
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BR112018012281A2 (pt) 2018-11-27
EP3389518A1 (en) 2018-10-24
WO2017106238A1 (en) 2017-06-22
MA44071A (fr) 2018-10-24
US20200246642A1 (en) 2020-08-06
BR112018012281B1 (pt) 2022-12-13
US11745031B2 (en) 2023-09-05
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CN108366812B (zh) 2021-06-18
US20230381547A1 (en) 2023-11-30

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