US20120116265A1 - Surgical instrument with charging devices - Google Patents

Surgical instrument with charging devices Download PDF

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Publication number
US20120116265A1
US20120116265A1 US13275495 US201113275495A US2012116265A1 US 20120116265 A1 US20120116265 A1 US 20120116265A1 US 13275495 US13275495 US 13275495 US 201113275495 A US201113275495 A US 201113275495A US 2012116265 A1 US2012116265 A1 US 2012116265A1
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Patent type
Prior art keywords
surgical
power
instrument
battery
source
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
US13275495
Inventor
Kevin L. Houser
David C. Yates
John W. Willis
Aron O. Zingman
Donna L. Korvick
Ashvani K. Madan
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Ethicon LLC
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Ethicon Inc
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • AHUMAN NECESSITIES
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    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • AHUMAN NECESSITIES
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    • A61B17/28Surgical forceps
    • A61B17/285Surgical forceps combined with cutting implements
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    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
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    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
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    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F19/00Digital computing or data processing equipment or methods, specially adapted for specific applications
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063Circuits adapted for supplying loads only
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    • A61B2017/00398Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like using powered actuators, e.g. stepper motors, solenoids
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    • A61B2017/2929Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
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    • A61B2017/293Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft with means preventing relative rotation between the shaft and the actuating rod
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    • A61B2018/00172Connectors and adapters therefor
    • A61B2018/00178Electrical connectors
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    • A61B2018/00773Sensed parameters
    • A61B2018/00791Temperature
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    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206Generators therefor
    • A61B2018/1226Generators therefor powered by a battery
    • AHUMAN NECESSITIES
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1405Electrodes having a specific shape
    • A61B2018/1412Blade
    • AHUMAN NECESSITIES
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    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • A61B2018/1452Probes having pivoting end effectors, e.g. forceps including means for cutting
    • A61B2018/1455Probes having pivoting end effectors, e.g. forceps including means for cutting having a moving blade for cutting tissue grasped by the jaws
    • AHUMAN NECESSITIES
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    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08Accessories or related features not otherwise provided for
    • A61B2090/0803Counting the number of times an instrument is used
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    • A61B90/08Accessories or related features not otherwise provided for
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    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063Circuits adapted for supplying loads only
    • H02J2007/0067Discharge management, i.e. discharge current reduction at low state of charge, sequential battery discharge in systems with a plurality of battery

Abstract

A surgical instrument includes a first power source and a second power source. The first power source is configured to deliver power to a surgical instrument at a first rate of discharge. The second power source is configured to deliver power to the first power source at a second rate of discharge. The first power source and the second power source are positioned within the surgical instrument. The first power source and the second power source are further configured to communicate with a control module. The control module may rely on power from the first power source to drive an end effector of the surgical instrument. The end effector may comprise a harmonic/ultrasonic blade, RF electrosurgical electrodes, powered cutting/stapling features, and/or various other types of components.

Description

    PRIORITY
  • [0001]
    This application claims priority to U.S. Provisional Application Ser. No. 61/410,603, filed Nov. 5, 2010, entitled “Energy-Based Surgical Instruments,” the disclosure of which is incorporated by reference herein. This application also claims priority to U.S. Provisional Application Ser. No. 61/487,846, filed May 19, 2011, entitled “Energy-Based Surgical Instruments,” the disclosure of which is incorporated by reference herein.
  • BACKGROUND
  • [0002]
    In some settings, endoscopic surgical instruments may be preferred over traditional open surgical devices since a smaller incision may reduce the post-operative recovery time and complications. Consequently, some endoscopic surgical instruments may be suitable for placement of a distal end effector at a desired surgical site through a cannula of a trocar. These distal end effectors may engage tissue in a number of ways to achieve a diagnostic or therapeutic effect (e.g., endocutter, grasper, cutter, stapler, clip applier, access device, drug/gene therapy delivery device, and energy delivery device using ultrasound, RF, laser, etc.). Endoscopic surgical instruments may include a shaft between the end effector and a handle portion, which is manipulated by the clinician. Such a shaft may enable insertion to a desired depth and rotation about the longitudinal axis of the shaft, thereby facilitating positioning of the end effector within the patient.
  • [0003]
    Examples of endoscopic surgical instruments include those disclosed in U.S. Pat. Pub. No. 2006/0079874, entitled “Tissue Pad for Use with an Ultrasonic Surgical Instrument,” published Apr. 13, 2006, the disclosure of which is incorporated by reference herein; U.S. Pat. Pub. No. 2007/0191713, entitled “Ultrasonic Device for Cutting and Coagulating,” published Aug. 16, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. Pub. No. 2007/0282333, entitled “Ultrasonic Waveguide and Blade,” published Dec. 6, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. Pub. No. 2008/0200940, entitled “Ultrasonic Device for Cutting and Coagulating,” published Aug. 21, 2008, the disclosure of which is incorporated by reference herein; U.S. Pat. Pub. No. 2011/0015660, entitled “Rotating Transducer Mount for Ultrasonic Surgical Instruments,” published Jan. 20, 2011, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 6,500,176, entitled “Electrosurgical Systems and Techniques for Sealing Tissue,” issued Dec. 31, 2002, the disclosure of which is incorporated by reference herein; and U.S. Pat. Pub. No. 2011/0087218, entitled “Surgical Instrument Comprising First and Second Drive Systems Actuatable by a Common Trigger Mechanism,” published Apr. 14, 2011, the disclosure of which is incorporated by reference herein. Additionally, such surgical tools may include a cordless transducer such as that disclosed in U.S. Pat. Pub. No. 2009/0143797, entitled “Cordless Hand-held Ultrasonic Cautery Cutting Device,” published Jun. 4, 2009, the disclosure of which is incorporated by reference herein. In addition, the surgical instruments may be used, or adapted for use, in robotic-assisted surgery settings such as that disclosed in U.S. Pat. No. 6,783,524, entitled “Robotic Surgical Tool with Ultrasound Cauterizing and Cutting Instrument,” issued Aug. 31, 2004, the disclosure of which is incorporated by reference herein.
  • [0004]
    While several systems and methods have been made and used for surgical instruments, it is believed that no one prior to the inventors has made or used the invention described in the appended claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0005]
    While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed the present invention will be better understood from the following description of certain examples taken in conjunction with the accompanying drawings, in which like reference numerals identify the same elements and in which:
  • [0006]
    FIG. 1 depicts perspective view of an exemplary surgical instrument;
  • [0007]
    FIG. 2 depicts a partial side cross sectional view of an exemplary alternative version of an surgical instrument;
  • [0008]
    FIG. 3 depicts a partial side cross sectional view of another exemplary alternative version of an surgical instrument having a battery door; and
  • [0009]
    FIG. 4 depicts a diagrammatic view of a graph showing coordinated power delivery used by the surgical instrument of FIG. 2.
  • [0010]
    The drawings are not intended to be limiting in any way, and it is contemplated that various embodiments of the invention may be carried out in a variety of other ways, including those not necessarily depicted in the drawings. The accompanying drawings incorporated in and forming a part of the specification illustrate several aspects of the present invention, and together with the description serve to explain the principles of the invention; it being understood, however, that this invention is not limited to the precise arrangements shown.
  • DETAILED DESCRIPTION
  • [0011]
    The following description of certain examples of the invention should not be used to limit the scope of the present invention. Other examples, features, aspects, embodiments, and advantages of the invention will become apparent to those skilled in the art from the following description, which is by way of illustration, one of the best modes contemplated for carrying out the invention. As will be realized, the invention is capable of other different and obvious aspects, all without departing from the invention. Accordingly, the drawings and descriptions should be regarded as illustrative in nature and not restrictive.
  • [0012]
    It will be appreciated that the terms “proximal” and “distal” are used herein with reference to a clinician gripping a handpiece assembly. Thus, an end effector is distal with respect to the more proximal handpiece assembly. It will be further appreciated that, for convenience and clarity, spatial terms such as “top” and “bottom” also are used herein with respect to the clinician gripping the handpiece assembly. However, surgical instruments are used in many orientations and positions, and these terms are not intended to be limiting and absolute.
  • [0013]
    Various examples described herein are directed to improved ultrasonic surgical instruments configured for effecting tissue dissecting, cutting, and/or coagulation during surgical procedures. For example, the teachings herein may be readily combined with various teachings from any of the following, in numerous ways, as will be apparent to those of ordinary skill in the art: U.S. Pat. No. 7,738,971 entitled “Post-Sterilization Programming of Surgical Instruments,” issued Jun. 15, 2010, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2006/0079874 entitled “Tissue Pad for Use with an Ultrasonic Surgical Instrument,” published Apr. 13, 2006, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2007/0191713 entitled “Ultrasonic Device for Cutting and Coagulating,” published Aug. 16, 2007, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2007/0282333 entitled “Ultrasonic Waveguide and Blade,” published Dec. 6, 2007, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2008/0200940 entitled “Ultrasonic Device for Cutting and Coagulating,” published Aug. 21, 2008, the disclosure of which is incorporated by reference herein; U.S. Pat. Pub. No. 2009/0143797, entitled “Cordless Hand-held Ultrasonic Cautery Cutting Device,” published Jun. 4, 2009, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2009/0209990 entitled “Motorized Surgical Cutting and Fastening Instrument Having Handle Based Power Source,” published Aug. 20, 2009, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2010/0069940 entitled “Ultrasonic Device for Fingertip Control,” published Mar. 18, 2010, the disclosure of which is incorporated by reference herein; and U.S. Pub. No. 2011/0015660, entitled “Rotating Transducer Mount for Ultrasonic Surgical Instruments,” published Jan. 20, 2011, the disclosure of which is incorporated by reference herein. Similarly, various ways in which medical devices may be adapted to include a portable power source are disclosed in U.S. Provisional Application Ser. No. 61/410,603, filed Nov. 5, 2010, entitled “Energy-Based Surgical Instruments,” the disclosure of which is incorporated by reference herein.
  • [0014]
    As will become apparent from the following description, it is contemplated that versions of the surgical instrument described herein may be used in association with an oscillator module of a surgical system, whereby ultrasonic energy from the oscillator module provides the desired ultrasonic actuation for the present surgical instrument. It is also contemplated that versions of the surgical instrument described herein may be used in association with a signal generator module of a surgical system, whereby electrical energy in the form of radio frequencies (RF), for example, is used to provide feedback to the user regarding the surgical instrument. The ultrasonic oscillator and/or the signal generator modules may be non-detachably integrated with the surgical instrument or may be provided as separate components, which can be electrically attachable to the surgical instrument.
  • [0015]
    It should also be understood that the teachings herein may be readily applied to various types of electrosurgical instruments, including but not limited to those taught in U.S. Pat. No. 6,500,176 entitled “Electrosurgical Systems and Techniques for Sealing Tissue,” issued Dec. 31, 2002, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,112,201 entitled “Electrosurgical Instrument and Method of Use,” issued Sep. 26, 2006, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,125,409, entitled “Electrosurgical Working End for Controlled Energy Delivery,” issued Oct. 24, 2006, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,169,146 entitled “Electrosurgical Probe and Method of Use,” issued Jan. 30, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,186,253, entitled “Electrosurgical Jaw Structure for Controlled Energy Delivery,” issued Mar. 6, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,189,233, entitled “Electrosurgical Instrument,” issued Mar. 13, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,220,951, entitled “Surgical Sealing Surfaces and Methods of Use,” issued May 22, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,309,849, entitled “Polymer Compositions Exhibiting a PTC Property and Methods of Fabrication,” issued Dec. 18, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,311,709, entitled “Electrosurgical Instrument and Method of Use,” issued Dec. 25, 2007, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,354,440, entitled “Electrosurgical Instrument and Method of Use,” issued Apr. 8, 2008, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 7,381,209, entitled “Electrosurgical Instrument,” issued Jun. 3, 2008, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2011/0087218, entitled “Surgical Instrument Comprising First and Second Drive Systems Actuatable by a Common Trigger Mechanism,” published Apr. 14, 2011, the disclosure of which is incorporated by reference herein; and U.S. patent application Ser. No. 13/151,181, entitled “Motor Driven Electrosurgical Device with Mechanical and Electrical Feedback,” filed Jun. 2, 2011, the disclosure of which is incorporated by reference herein.
  • [0016]
    Furthermore, the teachings herein may be readily applied to various types of electrically powered cutting and stapling instruments, including but not limited to those taught in U.S. Pat. No. 7,416,101 entitled “Motor-Driven Surgical Cutting and Fastening Instrument with Loading Force Feedback,” issued Aug. 26, 2008, the disclosure of which is incorporated by reference herein; U.S. Pub. No. 2009/0209979, entitled “Motorized Cutting and Fastening Instrument Having Control Circuit for Optimizing Battery Usage,” published Aug. 20, 2009; and U.S. patent application Ser. No. 13/151,181, entitled “Motor Driven Electrosurgical Device with Mechanical and Electrical Feedback,” filed Jun. 2, 2011, the disclosure of which is incorporated by reference herein. Still other suitable types of devices to which the teachings herein may be applied will be apparent to those of ordinary skill in the art.
  • [0017]
    In view of the foregoing, it should be understood that the surgical instrument is not limited in its application or use to the details of construction and arrangement of parts illustrated in the accompanying drawings and description. The illustrative versions of the surgical instrument may be implemented or incorporated in other versions, variations and modifications, and may be practiced or carried out in various ways. Further, unless otherwise indicated, the terms and expressions employed herein have been chosen for the purpose of describing the illustrative versions of the present surgical instrument for the convenience of the reader and are not for the purpose of limiting the surgical instrument.
  • [0018]
    It is further understood that any one or more of the teachings, expressions, embodiments, examples, etc. described herein may be combined with any one or more of the other teachings, expressions, embodiments, examples, etc. that are described herein. The following-described teachings, expressions, embodiments, examples, etc. should therefore not be viewed in isolation relative to each other. Various suitable ways in which the teachings herein may be combined will be readily apparent to those of ordinary skill in the art in view of the teachings herein. Such modifications and variations are intended to be included within the scope of the claims.
  • [0019]
    I. Exemplary Ultrasonic Instrument
  • [0020]
    The examples described herein relate to a battery powered ultrasonic surgical clamp coagulator apparatus which is configured for effecting tissue cutting, coagulation, and/or clamping during surgical procedures. When ultrasonic components of the apparatus are inactive, tissue can be readily gripped and manipulated, as desired, without tissue cutting. When the ultrasonic components are activated, the apparatus permits tissue to be gripped for coupling with the ultrasonic energy to effect tissue coagulation, with application of increased pressure efficiently effecting tissue cutting and coagulation. If desired, ultrasonic energy can be applied to tissue without use of the clamping mechanism of the apparatus by appropriate manipulation of the ultrasonic blade.
  • [0021]
    FIG. 1 shows a version of a surgical instrument (10). The surgical instrument (10) includes a battery connected to a control module as will be discussed in further detail below. Surgical instrument (10) further comprises an ultrasonic transducer (50). It will be noted that, in some applications, ultrasonic transducer (50) is referred to as a “hand piece assembly” because the surgical instrument of surgical instrument (10) is configured such that a surgeon may grasp and manipulate ultrasonic transducer (50) during various procedures and operations. Of course, instrument (10) may be configured for robotic manipulation in addition to or in lieu of human operator manipulation. Ultrasonic transducer (50) may be a disposable component, completely enclosed by instrument (10) and/or it may be a reusable component that is detachable from instrument (10). It will be appreciated that surgical instrument (10) may comprise any suitable combination of disposable components and reusable components.
  • [0022]
    Ultrasonic surgical instrument (10) further includes a multi-piece handle assembly (68) adapted to isolate the operator from the vibrations of the acoustic assembly contained within transducer (50). Handle assembly (68) may be shaped to be held by a user in a pistol-grip manner, but it is contemplated that instrument (10) may be grasped and manipulated in any other suitable manner as would be apparent to one of ordinary skill in the art in view of the teachings herein. While multi-piece handle assembly (68) is illustrated, handle assembly (68) may instead comprise a single unitary piece. Ultrasonic transducer (50) may also be attached to and removed from ultrasonic surgical instrument (10) as a unit. Handle assembly (68) may be constructed from a durable plastic, such as polycarbonate or a liquid crystal polymer. It is also contemplated that handle assembly (68) may alternatively be made from a variety of materials including other plastics, ceramics or metals.
  • [0023]
    Surgical instrument (10) further comprises an outer sheath (72) extending distally from handle assembly (68) leading to an end effector (81), which comprises clamp member (60) and blade (79). Clamp member (60) and blade (79) are operable to manipulate tissue in various ways as described herein. Ultrasonic transducer (50) is operable to deliver ultrasonic energy to end effector (81), which, in the exemplary version, is communicated from transducer (50) to end effector (81) through an acoustic waveguide (not shown) extending through outer sheath (72).
  • [0024]
    The distal end of blade (79) is disposed near an anti-node in order to tune the acoustic assembly to a preferred resonant frequency fo when the acoustic assembly is not loaded by tissue. When ultrasonic transducer (50) is energized, the distal end of blade (79) is configured to move longitudinally in the range of, for example, approximately 10 to 500 microns peak-to-peak, and preferably in the range of about 20 to about 200 microns at a predetermined vibrational frequency fo of, for example, 55,500 Hz. Thus, when tissue is secured between blade (79) and clamp arm (84), the ultrasonic oscillation of blade (79) may simultaneously sever 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 (79) and clamp arm (84) to cauterize the tissue. While some configurations for transducer (50) have been described, still other suitable configurations for transducer (50) will be apparent to one or ordinary skill in the art in view of the teachings herein.
  • [0025]
    A power supply is located inside the handle assembly (68) for providing power to the device including transducer (50). The power supply may include a primary battery, a rechargeable battery, a supercapacitor, a fuel cell or a combination of these or other means of supplying power. It should be understood that surgical instrument (10) may be constructed in accordance with some or all of the teachings of any of the references cited herein, including those relating to ultrasonic surgical instruments, those relating to RF electrosurgical instruments, or those relating to electrically powered cutting and stapling instruments. As another merely illustrative example, surgical instrument (10) may comprise a variation of the instruments described in any of the following: U.S. Pat. No. 5,980,510, entitled “Ultrasonic Clamp Coagulator Apparatus Having Improved Clamp Arm Pivot Mount,” issued Nov. 9, 1999, the disclosure of which is incorporated by reference herein; U.S. Pat. No. 5,938,633, entitled “Ultrasonic Surgical Devices,” issued Aug. 17, 1999; U.S. Pat. No. 5,935,144, entitled “Double Sealed Acoustic Isolation Members for Ultrasonic,” issued Aug. 10, 1999; U.S. Pat. No. 5,944,737, entitled “Ultrasonic Clamp Coagulator Apparatus Having Improved Waveguide Support Member,” issued Aug. 31, 1999; U.S. Pat. No. 5,322,055, entitled “Clamp Coagulator/Cutting System for Ultrasonic Surgical Instruments,” issued Jun. 21, 1994; U.S. Pat. No. 5,630,420, entitled “Ultrasonic Instrument for Surgical Applications,” issued May 20, 1997; U.S. Pat. No. 5,449,370, entitled “Blunt Tipped Ultrasonic Trocar,” issued Sep. 12, 1995; U.S. Pat. No. D594,983, entitled “Handle Assembly for Surgical Instrument,” issued Jun. 23, 2009; and/or any other reference cited herein. Still other suitable forms that instrument (10) may take will be apparent to those of ordinary skill in the art in view of the teachings herein.
  • [0026]
    II. Exemplary Device for Charging Power Source
  • [0027]
    It will be understood that in some energy based instruments, it may be desirable to use a battery that is operable to provide a relative high discharge rate such as, for example, a lithium polymer battery or a super capacitor. However, it will be appreciated that a higher capacity battery, rather than a higher discharge rate battery, may be desirable as it can simply hold more charge to power the energy based instrument. Examples described herein relate to synergistic combinations of such batteries in a surgical instrument.
  • [0028]
    FIG. 2 shows an exemplary surgical instrument (100) having a grip portion (102) integrated with a body assembly (120). Surgical instrument (100) may be constructed and operable in accordance with at least some of the teachings above and/or teachings of the various references cited herein. A trigger (104) is pivotally coupled with a grip portion (102). A hub (108) is coupled to a distal portion of body assembly (120). A shaft (106) extends distally from hub (108). An end effector, such as end effector (81) of FIG. 1, is positioned at the distal end of shaft (106).
  • [0029]
    Grip portion (102) is shaped to be held and/or grasped by a single hand of the user. While grasping grip portion (102), the user may also be able to position his/her hand to actuate trigger (104) to use surgical instrument (100). The present example shows grip portion (102) having an elongated, rounded shape, but any suitable shape for grip portion (102) may be used as would be apparent to one of ordinary skill in the art in view of the teachings herein. Grip portion (102) defines an internal battery cavity (122). Battery cavity (122) has a shape and size to hold a power source, such as a storage battery (110), therein. Handle walls (124) surrounding battery cavity (122) are thick enough such that heat given off by storage battery (110) may be absorbed or otherwise insulated from the user's hands by handle walls (124) as storage battery (110) transfers charge to a discharge battery (112), as will be described in further detail below.
  • [0030]
    Surgical instrument (100) further comprises a switch (114) in communication with grip portion (102). Switch (114) is positioned proximate to grip portion (102) such that the user is able actuate switch (114) with the same hand grasping grip portion (102). Additionally, switch (114) may be positioned such that the user can actuate switch (114) and trigger (104) without repositioning his/her hands. In the present example, switch (114) comprises a sliding switch. However, switch (114) may comprise any suitable component operable to be actuated by the user as would be apparent to one of ordinary skill in the art in view of the teachings herein. For example, switch (114) may comprise a button or toggle lever operable to be actuated by a user.
  • [0031]
    Switch (114) is in communication with control module (126). Control module (126) is also in communication with discharge battery (112) and storage battery (110). Control module (126) is operable to selectively control the flow of current from storage battery (110) to discharge battery (112) such that storage battery (110) may be used to provide power to discharge battery (112) to increase the available charge of discharge battery (112).
  • [0032]
    Storage battery (110) of the present example is operable to provide a significant amount of charge for use with surgical instrument (100). However, in order to properly drive the end effector, surgical instrument (100) may have peak power requirements exceeding the capabilities of storage battery (110). Surgical instrument (100) may thus utilize power drawn from discharge battery (112) rather than from storage battery (110) in order to drive the end effector. Discharge battery (112) is operable to deliver a high rate of energy for use by surgical instrument (100). Discharge battery (112) is operable to deliver power directly to end effector (81), or in other exemplary versions, discharge battery may be operable to deliver power to end effector (81) through control module (126).
  • [0033]
    In the present example, discharge battery (112) may be operable to deliver power to a transducer in communication with end effector (81). Furthermore, while the current example contemplates delivering ultrasonic energy with end effector (81), it will be appreciated that end effector (81) may also be operable to deliver RF energy and/or perform other functions. Discharge battery (112) may comprise, for example, a lithium polymer battery, or any other suitable battery type as would be apparent to one of ordinary skill in the art in view of the teachings herein. In some other exemplary versions, discharge battery (112) comprises a nickel-cadmium battery, a super capacitor, a fuel cell, or any combination thereof. In the event that discharge battery (112) comprises a super capacitor, it will be understood that the super capacitor may initially have a discharged state where thereafter the super capacitor is charged prior to use. Furthermore, discharge battery (112) may comprise a rechargeable battery such that discharge battery (112) may be recharged by storage battery (110) or any other suitable power source such that thereafter discharge battery (112) may again be used to power surgical instrument (100).
  • [0034]
    Through use of control module (126), switch (114) is operable by the user to cause charge to flow from storage battery (110) to discharge battery (112), thereby sufficiently charging discharge battery (112) for operation of the end effector. Body assembly (120) further comprises at least one visual indicator (128) operable to inform the user of the charge status of discharge battery (112). The present example shows a single visual indicator (128), but any suitable number visual indicators (128) may be used. In some versions, a single visual indicator (128) has different states, such as different colors or brightness levels, to communicate to the user the charge status of discharge battery (112). Visual indicator (128) may comprise an LED, an LCD screen, or any other suitable visual aid as would be apparent to one of ordinary skill in the art in view of the teachings herein.
  • [0035]
    For example, if discharge battery (112) has a charge level that drops below 50%, visual indicator (128) may signal to the user that discharge battery (112) level is below 50%. The user may then actuate switch (114), which causes control module (126) to direct flow of charge from storage battery (110) to discharge battery (112). As discharge battery (112) charges, control module (126) is operable to determine the charge level of discharge battery (112). Visual indicator (128) may provide real time feedback to the user to indicate the charge status of discharge battery (112). Once charging is complete, visual indicator (128) informs the user that discharge battery (112) is completely charged. In some exemplary versions, control module (126) may be operable to automatically stop delivery of charge from storage battery (110) to discharge battery (112) once discharge battery (112) is fully charged. In other exemplary versions, the user may actuate switch (114) to stop the recharging of discharge battery (112) and monitor the charge level in real time. In some other exemplary versions, storage battery (110) is operable to provide continuous recharge for discharge battery (112) (e.g., such that switch (114) is omitted). Other suitable charging patterns may be used as would be apparent to one of ordinary skill in the art in view of the teachings herein.
  • [0036]
    Body assembly (120) and grip assembly (102) fully enclose storage battery (110) and discharge battery (112) in the present example. Thus, once surgical instrument (100) is shipped in a package, it will be further understood that surgical instrument (100) is ready for use since storage battery (110) and discharge battery (112) are already contained within surgical instrument (100). Storage battery (110) may already be fully charged, and in some instances discharge battery (112) may also be fully charged before instrument (100) is removed from the package. Once removed from a package or other suitable container, surgical instrument (100) may be used within approximately five minutes or any other suitable time period. In addition or in the alternative, surgical instrument (100) may be removed from a package and stored for a period of time prior to use. Prior to use of surgical instrument (100), it will be appreciated that since discharge battery (112) and storage battery (110) are contained within surgical instrument (100), surgical instrument (100) may be sterilized using an ethylene oxide sterilization method and/or any other suitable sterilization method as would be apparent to one of ordinary skill in the art in view of the teachings herein.
  • [0037]
    FIG. 3 shows an exemplary surgical instrument (200) having grip portion (202) integrated with body assembly (220). Grip portion (202) includes a pivoting trigger (204). A hub (208) is connected to a distal portion of body assembly (220). A shaft (206) extends distally from hub (208). An end effector (not shown) is positioned at the distal end of shaft (206). Surgical instrument (200) of this example is substantially similar to surgical instrument (100) of FIG. 1, with the exception that grip portion (202) comprises a battery door (230) pivotally coupled with surgical instrument (200) by a hinge (232). While the present example shows hinge (232) connecting battery door (230) to grip portion (202), it will be appreciated that any suitable connection feature may be used as would be apparent to one of ordinary skill in the art in view of the teachings herein. For example, a screw-on or snap-fit cap may be used instead of battery door (230). When battery door (230) is closed, battery door (230) is operable to form a hermetic seal or any other suitable level of sealing with grip portion (202). Thus, it will be understood that storage battery (210) used with surgical instrument (200) for charging discharge battery (212) may be replaced when storage battery (210) has been depleted. In some other versions, it will be appreciated that storage battery (210) may be shipped disconnected from surgical instrument (200) where the user may then insert storage battery (210) into grip portion (202) when surgical instrument (200) is ready for use.
  • [0038]
    Surgical instrument (200) also comprises control module (226). In the present example, control module (226) is operable to coordinate delivery of power and charging as depicted by chart (350) of FIG. 4. In some exemplary versions, control module (226) may be integrally formed with surgical instrument (200) or in the alternative, control module (226) may be detachable. Storage battery (210) may be operable to deliver power to power surgical instrument (200) directly rather than through discharge battery (212). In such a configuration, discharge battery (212) may comprise a super capacitor operable to supplement the power delivery of storage battery (210). It will be understood that the power drawn from surgical instrument (200) may not necessarily be constant. As a result, storage battery (210) is operable to satisfy most of the power needs of surgical instrument (200). In the event that the power requirements of surgical instrument (200) fall below a level of what storage battery (210) is able to provide, control module (226) directs the excess charge to charge the super capacitor. In the event that the power needs of surgical instrument (200) exceed a level of power that storage battery (210) can deliver, then the super capacitor may be directed by control module (226) to supplement the additional needed power. In the event that storage battery (210) provides the appropriate amount of power for surgical instrument (200), then it will be appreciated that the super capacitor will neither be charging nor discharging. An example of the relative power amounts of storage battery (210), power required by surgical instrument (200), and power in a super capacitor are shown in FIG. 4 using a storage battery line (300), a power requirement line (302), and a capacitor line (304), respectively, where the horizontal axis represents time, which may be indicated using any suitable unit of time and the vertical axis represents charge state, which may be indicated using any suitable unit of charge.
  • [0039]
    In FIG. 4, which demonstrates a merely exemplary charge state sequence, stage 1 (310) shows a state where surgical instrument (200) does not require any power. As a result, storage battery (210) may continuously charge discharge battery (212). At stage 2 (312), surgical instrument (200) requires some amount of power (e.g., when surgical instrument (200) is powered on, etc.). Storage battery (210) switches to supply power to surgical instrument (200) and discharge battery (212) remains charged. Since at stage 2 (312), storage battery (210) is being used to provide power to surgical instrument (200), charging of discharge battery (212) has halted. It should be understood, however, that storage battery (210) may simultaneously provide power to surgical instrument (200) and charge discharge battery (212) in some instances. At stage 3 (314), the power requirement of surgical instrument (200) spikes (e.g., in response to actuation of trigger (204), etc.) and both discharge battery (212) and storage battery (210) must be used to supply sufficient power to surgical instrument (200). Thereafter at stage 4 (316), the power required by surgical instrument (200) drops significantly and therefore, discharge battery (212) may be recharged again using storage battery (210). Finally, at stage 5 (318), the power needs of surgical instrument (200) rise again and storage battery (210) is used to provide power to surgical instrument (200) and discharge battery (212) is no longer charged by storage battery (210). While FIG. 4 shows merely one exemplary charging sequence relationship between discharge battery (212), storage battery (210) and surgical instrument (200), it will be appreciated that other sequences may be used as would be apparent to one of ordinary skill in the art in view of the teachings herein. It will be appreciated that the above-described sequence for charging discharge battery (212) and/or storage battery (210) may be controlled wholly or in part by control module (126, 226) described above. In some alternative versions, it will be appreciated that a separate module (not shown) may be used to control the charging of discharge battery (212) and storage battery (210).
  • [0040]
    It should be appreciated that any patent, publication, or other disclosure material, in whole or in part, that is said to be incorporated by reference herein is incorporated herein only to the extent that the incorporated material does not conflict with existing definitions, statements, or other disclosure material set forth in this disclosure. As such, and to the extent necessary, the disclosure as explicitly set forth herein supersedes any conflicting material incorporated herein by reference. Any material, or portion thereof, that is said to be incorporated by reference herein, but which conflicts with existing definitions, statements, or other disclosure material set forth herein will only be incorporated to the extent that no conflict arises between that incorporated material and the existing disclosure material.
  • [0041]
    Embodiments of the present invention have application in conventional endoscopic and open surgical instrumentation as well as application in robotic-assisted surgery. For instance, those of ordinary skill in the art will recognize that various teaching 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.
  • [0042]
    Embodiments of the devices disclosed herein can be designed to be disposed of after a single use, or they can be designed to be used multiple times. Embodiments 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, embodiments 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, embodiments of the device may be reassembled for subsequent use either at a reconditioning facility, or by a surgical team immediately prior to a surgical procedure. Those skilled in the art will appreciate that 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.
  • [0043]
    By way of example only, embodiments described herein may be processed before surgery. First, a new or used instrument may be obtained and if necessary cleaned. The instrument may then be sterilized. In one sterilization technique, the instrument is placed in a closed and sealed container, such as a plastic or TYVEK bag. The container and instrument 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 instrument and in the container. The sterilized instrument may then be stored in the sterile container. The sealed container may keep the instrument sterile until it is opened in a medical facility. 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.
  • [0044]
    Having shown and described various embodiments of the present invention, further adaptations of the methods and systems described herein may be accomplished by appropriate modifications by one of ordinary skill in the art without departing from the scope of the present invention. Several of such potential modifications have been mentioned, and others will be apparent to those skilled in the art. For instance, the examples, embodiments, geometrics, materials, dimensions, ratios, steps, and the like discussed above are illustrative and are not required. Accordingly, the scope of the present invention should be considered in terms of the following claims and is understood not to be limited to the details of structure and operation shown and described in the specification and drawings.

Claims (20)

  1. 1. An apparatus comprising:
    (a) a surgical instrument;
    (b) a first power source in communication with the surgical instrument, wherein the first power source is configured to deliver power to the surgical instrument, wherein the first power source is operable to be placed in the surgical instrument such that at least a portion of the first power source is contained within the surgical instrument, wherein the first power source has a first discharge rate;
    (c) a second power source in communication with the first power source, wherein the second power source is configured to deliver power to the first power source, wherein the second power source has a second discharge rate; and
    (d) a control module, wherein the first power source and the second power source are operable to communicate with the control module, wherein the control module is operable to use the second power source to charge the first power source.
  2. 2. The apparatus of claim 1, wherein the first power source comprises a super capacitor.
  3. 3. The apparatus of claim 1, further comprising a visual indicator operable to show the charge status of the first power source.
  4. 4. The apparatus of claim 1, wherein the first discharge rate is faster than the second discharge rate.
  5. 5. The apparatus of claim 1, further comprising a switch operable to trigger the delivery of power to the first power source.
  6. 6. The apparatus of claim 1, wherein the second power source is configured to continually deliver power to the first power source.
  7. 7. The apparatus of claim 1, wherein the first power source and the second power source are sealed within the surgical instrument.
  8. 8. The apparatus of claim 1, wherein the surgical instrument comprises a battery door configured to allow the second power source to be removed from the surgical instrument.
  9. 9. The apparatus of claim 1, further comprising a switch configured to control the delivery of power to the first power source, wherein the switch is positioned on the surgical instrument proximate to a handle assembly of the surgical instrument.
  10. 10. The apparatus of claim 1, wherein the second power source is configured to provide power for the surgical instrument.
  11. 11. The apparatus of claim 10, wherein the first power source is configured to supplement the power provided by the second power source.
  12. 12. The apparatus of claim 10, wherein the first power source is configured to be charged by excess power discharge of the second power source.
  13. 13. The apparatus of claim 1, wherein the surgical instrument comprises an ultrasonic surgical instrument having a harmonic blade and an ultrasonic transducer in communication with at least the first power source.
  14. 14. The apparatus of claim 1, wherein the first power source comprises a rechargeable lithium ion battery.
  15. 15. The apparatus of claim 1, wherein the surgical instrument comprises an RF electrosurgical instrument.
  16. 16. An apparatus comprising:
    (a) a surgical instrument configured to deliver energy to tissue;
    (b) a first power source in communication with the surgical instrument, wherein the first power source is operable to deliver power to the surgical instrument, wherein the first power source is configured to deliver power to the surgical instrument at a high rate of discharge; and
    (c) a second power source in communication with the surgical instrument, wherein the second power source is operable to deliver power to the first power source, wherein the second power source is configured to deliver power at a lower rate of discharge than the first power source, wherein the surgical instrument is configured to hold the first power source and the second power source.
  17. 17. The apparatus of claim 16, wherein the first power source comprises a super capacitor.
  18. 18. The apparatus of claim 16, wherein the second power source is further operable to deliver power to the surgical instrument, wherein the surgical instrument has a first power demand state, a second power demand state, and a third power demand state,
    wherein the second power source is operable to charge the first power source when the surgical instrument is in the first power demand state,
    wherein the second power source is operable to simultaneously charge the first power source and deliver power to the surgical instrument when the surgical instrument is in the second power demand state, and
    wherein the second power source and the first power source are operable to both deliver power to the surgical instrument when the surgical instrument is in the third power demand state.
  19. 19. The apparatus of claim 16, wherein the surgical instrument comprises a power source door, wherein the second power source is removable through the power source door.
  20. 20. A method for delivering power to a surgical instrument using a first power source and a second power source, wherein the first power source is configured to deliver power to the surgical instrument at a high rate of discharge, wherein the second power source is configured to deliver power to the first power source, wherein the surgical instrument comprises a switch operable to control the delivery of power from the second power source to the first power source, the method comprising:
    (a) actuating the switch to transfer power from the second power source to the first power source;
    (b) powering the surgical instrument with the first power source;
    (c) operating the surgical instrument;
    (d) determining that the first power source requires additional power; and
    (e) transferring power from the second power source to the first power source to continue operating the surgical instrument.
US13275495 2010-11-05 2011-10-18 Surgical instrument with charging devices Abandoned US20120116265A1 (en)

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US41060310 true 2010-11-05 2010-11-05
US201161487846 true 2011-05-19 2011-05-19
US13275495 US20120116265A1 (en) 2010-11-05 2011-10-18 Surgical instrument with charging devices

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Application Number Priority Date Filing Date Title
US13275495 US20120116265A1 (en) 2010-11-05 2011-10-18 Surgical instrument with charging devices
CN 201180053434 CN103298417B (en) 2010-11-05 2011-11-03 A charging apparatus having a surgical instrument
JP2013537837A JP2013545537A (en) 2010-11-05 2011-11-03 Surgical instrument comprising a charging device
CA 2816878 CA2816878A1 (en) 2010-11-05 2011-11-03 Surgical instrument with charging devices
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