WO2024094213A1 - 一种电外科器械 - Google Patents

一种电外科器械 Download PDF

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Publication number
WO2024094213A1
WO2024094213A1 PCT/CN2023/129961 CN2023129961W WO2024094213A1 WO 2024094213 A1 WO2024094213 A1 WO 2024094213A1 CN 2023129961 W CN2023129961 W CN 2023129961W WO 2024094213 A1 WO2024094213 A1 WO 2024094213A1
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
excitation
accommodating cavity
assembly
closing
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.)
Ceased
Application number
PCT/CN2023/129961
Other languages
English (en)
French (fr)
Inventor
王振
杨超
张晓强
葛娟
李三东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reach Surgical Inc
Original Assignee
Reach Surgical Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reach Surgical Inc filed Critical Reach Surgical Inc
Priority to EP23885137.2A priority Critical patent/EP4585176A4/en
Priority to JP2025526294A priority patent/JP2025541607A/ja
Publication of WO2024094213A1 publication Critical patent/WO2024094213A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical 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
    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical 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
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445—Probes 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • 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
    • A61B2018/00607—Coagulation and cutting with the same instrument
    • 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
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • 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
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • 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
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • A61B2018/00928—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device by sending a signal to an external energy source
    • 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
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • A61B2018/00958—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device for switching between different working modes of the main function
    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical 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
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B2018/1452—Probes having pivoting end effectors, e.g. forceps including means for cutting
    • A61B2018/1455—Probes having pivoting end effectors, e.g. forceps including means for cutting having a moving blade for cutting tissue grasped by the jaws

Definitions

  • the present invention relates to the field of medical instruments, and in particular to an electrosurgical instrument.
  • a high-frequency electrosurgical unit is an electrosurgical device for cutting tissue. It heats the tissue when it contacts the body through the high-frequency and high-voltage current generated by the tip of the electrode, achieving separation and coagulation of the body tissue, thereby achieving the purpose of cutting and hemostasis.
  • a bipolar electrosurgical unit is a high-frequency electrosurgical unit with bipolar function. It causes the blood vessel wall to dehydrate and shrink, the blood in the blood vessel to coagulate, and the blood vessel and the blood clot to merge into one, thereby achieving separation and coagulation of tissue.
  • Bipolar electrosurgical units are widely used in various delicate surgical operations, such as neurosurgery, vascular surgery, microsurgery, and plastic surgery, because of their low thermal damage and controllable cutting speed and coagulation depth.
  • a traditional bipolar electrosurgical knife usually includes a handle assembly, an elongated body assembly, and an end actuator.
  • the handle assembly is connected to a host capable of outputting high-frequency and high-voltage current
  • the end actuator includes a pair of grasping members, which are used to clamp the tissue to be cut, and are driven by a driving mechanism arranged on the side of the handle assembly and a transmission mechanism arranged in the handle assembly and the elongated body.
  • the grasping members are closed by triggering the trigger on the handle assembly to clamp the tissue to be cut, and high-frequency energy can be excited by triggering the excitation button on the handle assembly.
  • the present invention provides an electrosurgical instrument which is easy to operate and has no potential safety hazard.
  • the present invention provides the following technical solutions:
  • An electrosurgical instrument comprises: an end execution assembly; a handle assembly operable to provide driving force and electrosurgical energy to the end execution assembly, the handle assembly comprising a gripping body and a closing trigger pivotally connected to the gripping body, the gripping body having a first accommodating cavity, the closing trigger having a second accommodating cavity, an excitation switch capable of turning on or off the excitation of electrosurgical energy transmission is disposed in the first accommodating cavity and/or the second accommodating cavity; when the closing trigger is pivoted toward the gripping body side to an excitation position, the excitation switch is triggered to an on state to provide electrosurgical energy to the end execution assembly.
  • the end actuator when the end actuator is in an open state, at least a portion of the closing trigger is accommodated in the first accommodating cavity of the grip body.
  • the area of the closing trigger entering the first accommodating cavity gradually increases; when the closing trigger pivots toward the holding body, the area of the closing trigger entering the first accommodating cavity gradually decreases.
  • it further includes a power supply connection part for electrically connecting to a host that generates electrosurgical energy, and a control circuit board electrically connected to the power supply connection part, an excitation circuit is arranged on the control circuit board, and the excitation switch is operable to turn on or off the excitation circuit to control the output of electrosurgical energy to the end execution component.
  • the excitation switch is a button switch
  • the first accommodating chamber and/or the second accommodating chamber also includes a trigger assembly for triggering the excitation switch.
  • the trigger assembly deviates from the initial state and acts on the excitation switch to turn on the excitation switch.
  • the excitation switch is disposed in the second accommodating cavity, and when the closing trigger pivots to the excitation position, the excitation switch can be operably triggered to an on state.
  • a trigger assembly is further disposed in the second accommodating chamber, the trigger assembly comprising a trigger rod, the trigger rod can be operated to deviate from the initial state to act on the excitation switch to turn it on, and a reset member connected to the trigger rod, the reset member provides a reset function to enable the trigger switch to be turned on.
  • the trigger lever is maintained at a biasing force in an initial state.
  • a mounting seat is provided in the second accommodating cavity, the trigger rod of the trigger assembly is slidably provided on the mounting seat, and the trigger rod slides along a first direction on the mounting seat to trigger the excitation switch to be turned on or off; the reset member is provided on the mounting seat to provide a biasing force to the trigger rod.
  • one end of the reset member acts on the excitation switch, and the other end acts on the trigger rod of the trigger assembly; the excitation switch is kept turned on during at least a portion of the movement of the closing trigger pivoting from the excitation position to the open position.
  • a mounting seat is provided in the second accommodating cavity, the trigger rod of the trigger assembly can be pivotally provided on the mounting seat, and the trigger rod pivots along a third direction on the mounting seat to trigger the excitation switch to be turned on or off; the reset member is provided on the mounting seat to provide a biasing force to the trigger rod.
  • an interference portion for cooperating with the trigger assembly is provided in the first accommodating cavity.
  • the interference portion abuts against one end of the trigger rod, so that the trigger rod overcomes the biasing force of the reset member and acts on the excitation switch to turn it on.
  • the excitation switch and the control circuit board are also mounted on the mounting base.
  • a trigger assembly is further disposed in the second accommodating cavity.
  • the trigger assembly is disposed on the shell surface of the closing trigger for the user to hold. When the closing trigger is pivoted to the excitation position, the trigger assembly can be operably connected to the excitation switch.
  • the closing trigger has a mounting opening
  • the pressing side of the excitation switch faces the mounting opening
  • the trigger assembly includes a sealing cover body mounted on the mounting opening
  • the sealing cover body has an elastic deformation area opposite to the excitation switch, and the elastic deformation area of the sealing cover body can be triggered and deformed to a set position in a direction close to the excitation switch, thereby turning on the excitation switch.
  • the pivoting trigger force of the closing trigger is smaller than the sealing The elastic deformation of the cover triggers the force.
  • a trigger assembly is also provided in the first accommodating chamber, and the trigger assembly includes a trigger rod slidably connected to the mounting seat, and the trigger rod slides on the mounting seat along the second direction to trigger the excitation switch to be turned on or off; and a reset member, which is installed on the mounting seat and acts on the trigger rod.
  • the excitation switch is a contact type switch, and the excitation switch includes: at least one first contact located in a first accommodating cavity, and at least one second contact located in a second accommodating cavity, the first contact is electrically connected to the power supply connection part, and the first contact or the second contact is electrically connected to the control circuit board; when the closing trigger pivots to the excitation position, the second contact abuts against the first contact to connect the excitation circuit.
  • a guiding structure is provided between the holding body and the closing trigger, and the guiding structure is used to guide the swinging direction of the closing trigger.
  • the handle assembly further comprises a first elastic member and a second elastic member, and the closing trigger overcomes the elastic force of the second elastic member and pivots toward the holding body side to a closed position, and the closing trigger overcomes the elastic force of the first elastic member and the second elastic member and pivots toward the holding body side to an excitation position.
  • Some embodiments of the present invention further include a slender body component, the slender body component defines a longitudinal axis, and includes an outer sleeve, wherein the proximal end of the outer sleeve extends to the inside of the grip body.
  • the closing trigger is operably mounted on the proximal portion of the outer sleeve via a connecting portion, and the connecting portion is formed on the upper end of the closing trigger and is pivotally mounted on the grip body.
  • the gripping body is provided with a stopper at the proximal end of the outer sleeve, and the outer sleeve located in the gripping body is sequentially sleeved with a proximal gasket, a driving ring and a retaining ring along the proximal end to the distal end, the retaining ring and the proximal gasket are respectively fixedly connected to the outer sleeve, and the driving ring can slide along the outer sleeve; a spring gasket is provided at the proximal end of the driving ring, and the connecting portion of the closing trigger is sleeved on the driving ring, and its two ends are respectively abutted against the spring gasket and the retaining ring; a first elastic member is provided between the spring gasket and the proximal gasket, A second elastic member is disposed between the proximal gasket and the stop member, and an elastic coefficient of the first elastic member is greater than an elastic
  • the handle assembly further comprises a cutting trigger pivotally connected to the grip body, and the cutting trigger is operable to control a knife actuating member in the end effector assembly to perform a cutting action.
  • the present invention also provides an electrosurgical instrument, comprising: a handle assembly that is operable to provide driving force and electrosurgical energy to an end execution assembly, the handle assembly comprising a gripping body and a closing trigger pivotally connected to the gripping body, the gripping body having a first accommodating cavity, and the closing trigger having a second accommodating cavity; an excitation switch that can turn on or off the excitation of electrosurgical energy transmission is provided in the second accommodating cavity; when the closing trigger pivots toward the gripping body side, the area of the closing trigger entering the first accommodating cavity gradually increases, and when it pivots to the excitation position, the excitation switch is triggered to the on state; when the closing trigger pivots away from the gripping body, the area of the closing trigger extending into the first accommodating cavity gradually decreases, and when it pivots to the non-excitation position, the excitation switch switches to the off state.
  • the holding body and/or the closing trigger have a receiving cavity; the excitation switch for connecting or disconnecting the excitation circuit is located in the receiving cavity, and when the closing trigger is pivoted from the initial position to the holding body side to the closing position and then continues to pivot to the excitation position, the excitation switch is triggered to excite the electrosurgical energy.
  • the one-button linkage excitation circuit of the closing trigger is realized, which effectively shortens the operation time of closing and coagulating (burning and sealing) tissues.
  • the excitation switch is located inside the holding body and/or the closing trigger, the problem of touching the excitation button due to operating errors is effectively prevented, thereby reducing the safety hazards caused to patients.
  • FIG1 is a schematic structural diagram of a specific embodiment of an electrosurgical instrument of the present invention.
  • FIG2 is a schematic diagram of an electrosurgical instrument having a power supply connection portion in the form of a plug according to the present invention
  • FIG3 is a schematic diagram of an electrosurgical instrument having a power supply connection portion in the form of an electric slip ring according to the present invention
  • FIG4 is a schematic diagram of a specific embodiment of a push-button excitation switch used in an electrosurgical instrument of the present invention.
  • FIG5A is a schematic diagram of a closing trigger in a closed position in a specific embodiment of an electrosurgical instrument of the present invention
  • 5B is a schematic diagram of a closed trigger in an excitation position in a specific embodiment of an electrosurgical instrument of the present invention
  • FIG5C is a schematic diagram of a closed trigger in an initial open position in a specific embodiment of an electrosurgical instrument of the present invention.
  • FIG6 is a schematic diagram of the structure inside the closed trigger of the first specific embodiment of the electrosurgical instrument of the present invention using a push button switch;
  • FIG. 7 is a schematic structural diagram of a first trigger assembly in a first specific embodiment of an electrosurgical instrument of the present invention using a push button switch;
  • FIG8 is a schematic structural diagram of a button switch and a control circuit board in a first specific embodiment of an electrosurgical instrument using a button switch of the present invention
  • 9A is a schematic structural diagram of an electrosurgical instrument of the present invention in an initial open position of a second specific embodiment using a push button switch;
  • 9B is a schematic structural diagram of the excitation position of the second specific embodiment of the electrosurgical instrument of the present invention using a push button switch;
  • FIG10A is a schematic structural diagram of an electrosurgical instrument of the present invention in an initial open position according to a third specific embodiment of a push button switch;
  • 10B is a schematic structural diagram of the excitation position of the third specific embodiment of the electrosurgical instrument of the present invention using a push button switch;
  • FIG11A is a schematic structural diagram of an electrosurgical instrument of the present invention in a fourth specific embodiment using a push button switch in an initial open position;
  • 11B is a schematic structural diagram of the excitation position of the fourth specific embodiment of the electrosurgical instrument of the present invention using a push button switch;
  • FIG12A is a schematic structural diagram of an electrosurgical instrument of the present invention using a first specific embodiment of a contact switch in an initial open position;
  • 12B is a schematic structural diagram of the excitation position of the first specific embodiment of the electrosurgical instrument of the present invention using a contact switch;
  • FIG13 is a schematic structural diagram of a pin-type contact in a first specific embodiment of an electrosurgical instrument of the present invention using a contact-type switch;
  • 14A is a schematic structural diagram of an electrosurgical instrument of the present invention in an initial open position of a second specific embodiment using a contact switch;
  • 14B is a schematic structural diagram of the closed trigger side of the second specific embodiment of the electrosurgical instrument of the present invention using a contact switch.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • installed e.g., it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • distal end/side refers to the end of the surgical instrument that is away from the operator when being operated
  • proximal end/side refers to the end/side of the surgical instrument that is close to the operator when being operated.
  • the present application generally relates to a medical device, and more particularly to an electrosurgical instrument, sometimes also referred to as a bipolar electrosurgical unit, which can be used to cut tissue, coagulate (cauterize and seal) tissue, and/or clamp tissue during a surgical procedure, whether in an open procedure or in a laparoscopic or endoscopic procedure.
  • an electrosurgical instrument sometimes also referred to as a bipolar electrosurgical unit, which can be used to cut tissue, coagulate (cauterize and seal) tissue, and/or clamp tissue during a surgical procedure, whether in an open procedure or in a laparoscopic or endoscopic procedure.
  • the surgical instrument can operatively transmit electrosurgical energy to an end effector assembly 30 to act on tissue to achieve coagulation (cauterization and sealing) of tissue, as shown in FIG1
  • the surgical instrument described herein can also be used to clamp and manipulate tissue when electrosurgical energy is not provided to the end effector assembly 30.
  • the clamp of the end effector assembly 30 can be selectively opened so that the end effector assembly 30 clamps tissue
  • the electrosurgical instrument 100 is usually connected to a host (not shown) that outputs electrosurgical energy. It is understandable that the same electrosurgical instrument 100 can be used in conjunction with a variety of different hosts through an external cable 40.
  • the electrosurgical instrument 100 includes a handle assembly 10, a slender body assembly 20, and an end actuator assembly 30 that are sequentially connected from the proximal end to the distal end.
  • the proximal end of the handle assembly 10 is provided with a power supply connection portion 15 for electrically connecting to the host.
  • the power supply connection portion 15 is formed in the form of a socket or a plug, and is configured to be easily connected to the output terminal or output connection socket of the host.
  • the power supply connection portion 15' can also be configured in the form of an electric slip ring to provide a reliable electrical connection when the actuator rotates.
  • the end effector assembly 30 is used to manipulate tissue to perform specific surgical operations, such as clamping, coagulation, cutting, and other surgical operations on tissue.
  • the end effector assembly 30 includes a first clamp 31 and a second clamp 32 that are pivotally connected.
  • the first clamp 31 and the second clamp 32 pivot toward each other to clamp the tissue, and the first clamp 31 and the second clamp 32 pivot away from each other to release the tissue.
  • the first clamp 31 of the end effector assembly 30 can be operated to pivot toward the second clamp 32 until the jaws of the end effector assembly 30 are closed to clamp the tissue; the first clamp 31 pivots away from the second clamp 32 until the jaws of the end effector assembly 30 are opened to release the tissue, and vice versa.
  • the first clamp 31 and the second clamp 32 both include electrode sheets that contact the tissue to Electrosurgical energy is delivered to the tissue to effect coagulation.
  • the handle assembly 10 is held by the user, so that the operator can operate the surgical instrument.
  • the handle assembly 10 can operably provide a driving force to the end effector assembly 30, such as a closing driving force and a cutting driving force.
  • the handle assembly 10 includes a grip body 11 that can be held by the user and a closing trigger 12 pivotally connected to the grip body 11. The user operates the closing trigger 12 to operate the end effector assembly 30 to perform a closing or opening action.
  • the grip body 11 includes a first half shell and a second half shell, and the first half shell and the second half shell can be detachably connected by a snap connection, a fastener connection, etc.
  • the grip body 11 is generally T-shaped as a whole, including a main body portion 11a extending along the longitudinal axis C direction and a grip portion 11b extending along a direction substantially perpendicular to the longitudinal axis or inclined at a certain angle relative to the longitudinal axis direction, wherein the main body portion 11a and the grip portion 11b form a first accommodating cavity 11c inside, which can accommodate a driving mechanism and an excitation circuit, etc.
  • the elongated body assembly 20 includes a plurality of longitudinal components that operably couple the end effector assembly 30 to a plurality of actuators housed by the handle assembly 10.
  • the elongated body assembly 20 includes an outer sleeve 201 that defines the outer surface of the elongated body and accommodates movement of other components therethrough.
  • the outer sleeve 201 is formed to move longitudinally relative to an inner actuating member 202 that is axially received within the outer sleeve 201.
  • the inner actuating member 202 may be a rod, a shaft, stamped metal, or other suitable metal component.
  • the closing trigger 12 is operably sleeved on the proximal portion of the slender body assembly 20 via a connecting portion 123.
  • the connecting portion 123 is formed at the upper end of the closing trigger 12 and connected to the proximal portion of the outer sleeve 201.
  • the connecting portion 123 is pivotally mounted in the housing of the grip body 11 via a pivot 120.
  • the connecting portion 123 extends upward around the opposite sides of a drive collar 124 disposed on the outer sleeve 201, and includes an arc-shaped proximal drive surface 123a and a distal drive surface 123b thereon.
  • the proximal drive surface 123a engages with the distal-facing surface of a spring washer 124a of the drive collar 124.
  • a snap ring 125 is also sleeved on the outer sleeve 201. The snap ring 125 moves with the longitudinal movement of the outer sleeve 201, and the drive surface 123b engages with the proximal-facing surface of the snap ring 125.
  • a proximal gasket 126 is also sleeved on the outer sleeve 201, and the proximal gasket 126 moves with the longitudinal movement of the outer sleeve 201.
  • the first elastic member 121 is sleeved on the outer sleeve 201 and is arranged between the distal surface of the proximal gasket 126 and the driving ring 124.
  • a stopper 127 is arranged on the shell of the grip body 11, and a second elastic member 122 is arranged between the proximal surface of the proximal gasket 126 and the distal surface of the stopper 127.
  • the elastic coefficient of the second elastic member 122 is smaller than that of the first elastic member 121, so as to provide the user with different gripping tactile sensations when the first elastic member 121 and/or the second elastic member 122 are compressed.
  • the handle assembly 10 further includes a cutting trigger 13 pivotally connected to the grip body 11 , and the user operates the cutting trigger 13 to operate the knife actuating member 203 in the end effector assembly 30 to perform a cutting action.
  • Cables 401 and 402 for transmitting electrosurgical energy are also provided in the outer sleeve 201 , and the distal ends of the cables 401 and 402 are respectively connected to the first clamp 31 and the second clamp 32 of the end effector assembly 30 to transmit high-frequency electrosurgical energy to the tissue coagulation electrode pads on the first clamp 31 and the second clamp 32 .
  • the elongated body assembly 20 further includes an inner support tube 204 , and the inner support tube 204 is used to support and guide the arrangement of the inner actuating member 202 , the knife actuating member 203 and the cables 401 and 402 .
  • a knob 50 is also provided at the distal end of the handle assembly 10 , and the user operates the knob 50 to realize the overall rotation of the elongated body assembly 20 and the end effector assembly 30 around the longitudinal axis C.
  • the closing trigger 12 extends from one side of the connecting portion 123 to the side opposite to the main body 11a of the grip body 11.
  • the gripping portion 11b of the gripping body 11 has an opening 110 on the side opposite to the closing trigger 12, and the closing trigger 12 can slide along the opening 110 to partially slide into or partially slide out of the first accommodating cavity 11c.
  • the proximal gasket 126 also moves proximally (arrow P1), thereby further compressing the second elastic member 122.
  • the outer sleeve 201 is operated to move proximally (arrow P1), realizing the relative movement of the outer sleeve 201 and the inner actuating member 202, and the angle between the first clamp 31 and the second clamp 32 of the end actuator assembly 30 gradually decreases until the closing trigger 12 pivots to the closed position, and the end actuator assembly 30 is in a closed state.
  • the closing trigger 12 when the closing trigger 12 is further operated to pivot toward the holding body 11 , the area where the closing trigger 12 enters the first accommodating cavity 11 c is further increased, and the proximal driving surface 123a of the connecting portion 123 of the closing trigger 12 drives the spring washer 124a of the driving collar 124 to continue to move proximally (arrow P2), and the first elastic member 121 is further compressed. Since the spring washer 124a can move longitudinally relative to the outer sleeve 201 of the slender body assembly 20, the outer sleeve 201 will not move with the proximal movement of the spring washer 124a, and the end effector assembly 30 remains in the closed state.
  • the trigger assembly 16 When the closing trigger 12 pivots to the excitation position, for example, as shown in FIG5B , the trigger assembly 16 is triggered so that the excitation circuit is turned on, and electrosurgical energy is provided to the end effector assembly 30. Since the elastic coefficient of the first elastic member 121 is greater than that of the second elastic member 122, when the closing trigger 12 is operated to pivot from the closing position to the triggering position, the first elastic member 121 provides the operator with a greater bias force, so that the operator can distinguish between the closing operation and the triggering operation based on the difference in the gripping touch.
  • the closing trigger 12 when the closing trigger 12 pivots to the open position, the closing trigger 12 At least part of the area is located in the first accommodating cavity 11c.
  • the user can also choose to switch between the closing operation and the opening operation to achieve clamping and opening of the target tissue instead of electrocoagulation.
  • a guide structure is provided between the inner wall of the first accommodating cavity 11c of the grip body 11 and the outer wall surface of the closing trigger 12 to support and guide the pivoting movement of the closing trigger 12 to prevent the closing trigger 12 from shaking in the first accommodating cavity 11c.
  • the guide structure includes a first guide protrusion 111 or a first guide groove provided on the inner wall of the first accommodating cavity 11c; and a second guide groove or a second guide protrusion provided on the outer wall surface of the closing trigger 12 to cooperate therewith.
  • the first guide protrusion 111 on the inner wall of the first accommodating cavity 11c can cooperate with the second guide groove (not shown in the figure) on the outer wall surface of the closing trigger 12 to achieve the direction guidance of the closing or opening action of the closing trigger 12.
  • the first guide protrusion 111 on the inner wall of the first accommodating cavity 11c can also cooperate with the second guide protrusion (not shown in the figure) on the outer wall surface of the closing trigger 12 to achieve the direction guidance of the relative sliding between the two.
  • the closing trigger 12 includes a second accommodating cavity 12a, which is an open cavity opening toward the side of the holding body 11.
  • An excitation switch is arranged in the first accommodating cavity 11c and/or the second accommodating cavity 12a, and the excitation switch is arranged to operably connect or disconnect the electrosurgical energy to the electrosurgical instrument 100.
  • the excitation switch 14 is triggered to switch the excitation circuit to the on state, and the electrosurgical energy output by the host is output to the end effector assembly 30 via the power supply connection portion 15, so as to apply electrosurgical energy to the tissue on the end effector assembly 30 to coagulate the tissue, thereby realizing the one-touch closing and excitation operation of the closing trigger 12, shortening the operation time of the instrument clamping and coagulating the tissue.
  • the excitation switch since the excitation switch is located inside the holding body 11 and/or the closing trigger 12, the problem of touching the excitation button due to operation error is effectively prevented, thereby reducing the safety hazard to the patient.
  • the closing trigger 12 is a solid end surface facing the grip body 11 without an opening
  • the excitation switch 14 is disposed in the first accommodating cavity 11c of the grip body 11
  • the end of the closing trigger 12 is provided with a trigger structure for triggering the excitation switch.
  • the closing trigger 12 pivots toward the inner side of the first accommodating cavity 11c of the grip body 11.
  • the grip body 11 is a solid end surface facing the closing trigger 12 without an opening
  • the excitation switch is arranged in the second accommodating cavity 12a of the closing trigger 12, and the end of the grip body 11 is provided with a trigger structure for triggering the excitation switch.
  • the excitation circuit is arranged on the control circuit board 18, and the excitation switch is located on the connection cable between the power supply connection portion 15 and the control circuit board 18.
  • the control circuit board 18 is installed in the second accommodating cavity 12a of the closing trigger 12. Since a part of the closing trigger 12 is still located in the first accommodating cavity 11c when the closing trigger 12 is pivoted to the open position, the control circuit board 18 is located in the second accommodating cavity 12a to protect the control circuit board 18 and prevent external dust or liquid from directly contacting the control circuit board 18 along the gap between the grip body 11 and the closing trigger 12.
  • the control circuit board 18 can also be installed in the first accommodating cavity 11c of the grip body 11.
  • the excitation switch 14 may be a push button switch, which connects the circuit by pressing the button of the push button switch and disconnects the circuit by releasing the button of the push button switch.
  • the excitation switch 14 may also be a contact switch, which connects or disconnects the circuit by contacting or disconnecting two contacts. It is understandable that the excitation switch 14 may also be other switch forms that can connect and disconnect the circuit.
  • the first accommodating chamber 11c and/or the second accommodating chamber 12a also include a trigger assembly 16 for triggering the push button switch, and when the closing trigger 12 pivots to the first position, the trigger assembly deviates from the initial state and acts on the push button switch to put the excitation circuit in the connected state.
  • the trigger switch 14 is configured as a push button switch.
  • a trigger assembly 16 for triggering the trigger switch 14 is also provided in the second accommodating chamber 12a of the closing trigger 12, which includes: a trigger rod 161, the trigger rod 161 is slidably connected to the mounting seat 19, and a reset member 162, the reset member 162 is mounted on the mounting seat 19 and acts on the trigger rod 161, the trigger rod 161 slides on the mounting seat 19 along a first direction to trigger the trigger switch 14 to be turned on.
  • the trigger switch 14 is arranged in the second accommodating cavity 12a, and the first accommodating cavity 11c is provided with a resisting portion 112 for cooperating with the trigger assembly 16.
  • the closing trigger 12 When the closing trigger 12 is in a non-exciting position (e.g., a closed position, an open position, or a position in the intermediate state), the trigger rod 161 is in an initial position under the action of the biasing force provided by the reset member 162. At this time, the trigger rod 161 maintains a preset distance from the excitation switch 14. When the closing trigger 12 pivots to the excitation position, the trigger rod 161 is in an initial position.
  • a non-exciting position e.g., a closed position, an open position, or a position in the intermediate state
  • the first end 161a proximal end
  • the second end 161b distal end
  • the trigger rod 161 overcomes the elastic force of the reset member 162 to act on the excitation switch 14, so that the excitation switch 14 is in a pressed state and the excitation circuit is turned on; when the closing trigger 12 pivots away from the holding body 11, the trigger rod 161 moves with the closing trigger 12 and away from the abutment portion 112, and under the action of the reset member 162, the trigger rod 161 slides again to the initial position in the direction away from the excitation switch 14.
  • one end of the reset member 162 abuts against the trigger rod 161, and the other end of the reset member 162 directly abuts against the excitation switch 14, so as to maintain the excitation switch 14 in an activated state during at least a portion of the movement of the closing trigger 12 from the actuated position of the excitation switch 14 to the unactuated position of the excitation switch 14.
  • the pressing of the trigger rod 161 causes the reset member 162 to be compressed between the trigger rod 161 and the excitation switch 14, and causes a biasing force to be applied to the excitation switch 14.
  • the reset member 162 i.e., currently slightly decompressed compensates or partially offsets the effect of the distal movement of the closing trigger 12 by maintaining the spring force on the excitation switch 14.
  • the spring force maintained by the reset member 162 on the trigger switch 14 is sufficient to keep it in the on state, so that the trigger switch 14 is not released and turned on again during the operation of the cutting trigger 13.
  • the abutment portion 112 in the first accommodating cavity 11c is formed as the inner wall surface of the first accommodating cavity 11c. More specifically, the inner wall surface is protruding relative to other areas of the first accommodating cavity 11c, and the surface that cooperates with the trigger rod 161 is a straight surface. As shown in Fig. 5-7, the trigger rod 161 is formed so that the end of the first end 161a has an arc-shaped surface so that it can smoothly contact the abutment portion 112.
  • the second end 161b of the trigger rod 161 is formed in the form of a cylindrical rod body, which contacts the pressing surface of the excitation switch 14 to achieve reliable triggering.
  • a sliding portion 161c is also provided between the first end 161a and the second end 161b of the trigger rod 161.
  • the mounting seat 19 is provided with a first mounting slot 191 extending in a first direction
  • the sliding portion 161c of the trigger rod 161 cooperates with the slot wall of the first mounting slot 191 to achieve sliding connection
  • the first mounting slot 191 is provided with a first through hole and a second through hole on opposite sides
  • the first end 161a and the second end 161b of the trigger rod 161 can be respectively passed through the first through hole and the second through hole to the outside of the first mounting slot 191.
  • the reset member 162 is a compression spring, which is sleeved on the second end 161b of the trigger rod 161, and one end of which abuts against the sliding portion 161c.
  • the compression spring causes the sliding portion 161c of the trigger rod 161 to abut against the first side surface (near side surface) of the first mounting slot 191, so that at least a portion of the first end 161a of the trigger rod 161 is located outside the first mounting slot 191; when the closing trigger 12 is operated to move toward the holding body 11, so that the first end 161a of the trigger rod 161 of the trigger assembly 16 abuts against the contact portion 112 of the holding body 11, the trigger rod 161 is pushed to move away from the contact portion 112, so that the end of the second end 161b of the trigger rod 161 is located outside the first mounting slot 191 and acts on the button switch 14a located outside the first mounting slot 191.
  • the excitation switch 14 and the control circuit board 18 are simultaneously mounted on the mounting seat 19 to achieve integrated installation.
  • the mounting seat 19 is further provided with a second mounting slot 192 adjacent to the first mounting slot 191, and the excitation switch 14 is snapped into the second mounting slot 192, and the excitation switch
  • the pressing portion 14 faces the second through hole of the first mounting slot 191 , so that the second end 161 b of the trigger rod 161 can press and trigger it.
  • the mounting seat 19 is further provided with a cable mounting portion 193 for fixing cables, and the cable mounting portion 193 is formed as a rod body extending along the second direction, and a plurality of wire clips are arranged on the rod body for fixing cables by bundling, and the rod body is arranged near the inner wall of the distal end of the closing trigger 12.
  • the mounting seat 19 is fixed to the inner wall of the second accommodating cavity 12a of the closing trigger 12 by means of snap-fitting or plug-in.
  • the inner wall of the second accommodating cavity 12a of the closing trigger 12 has a plurality of slots formed by ribs, and the outer wall of the mounting seat 19 is plugged into the slot. There are positioning protrusions and positioning grooves between the slot and the mounting seat 19, and reliable installation and fixation between the two are achieved through the deformable positioning structure of the mounting seat 19.
  • FIGS. 9A-B show another embodiment of the electrosurgical instrument 100 provided by the present invention, in which the excitation switch 24 is configured as a push button switch and is at least partially disposed in the second accommodating chamber 12a of the closing trigger 12.
  • the trigger assembly 26 is located in the first accommodating chamber 11c, and includes: a trigger rod 261 slidably connected to the mounting seat 29 and a reset member 262 mounted on the mounting seat 29 and acting on the trigger rod 261, the trigger rod 261 slides on the mounting seat 29 along a second direction to trigger the excitation switch 24 to be turned on or off; wherein the second direction may be the same as or different from the first direction.
  • the excitation switch 24 is located in the second accommodating cavity 12a; when the closing trigger 12 is in the non-excitation position, the trigger rod 261 extends out of the mounting seat 29 toward the end of the excitation switch 24 under the action of the reset member 262; when the closing trigger 12 pivots to the excitation position, the trigger rod 261 overcomes the elastic force of the reset member 262 and acts on the excitation switch 24, so that the excitation switch 24 is in a pressed state and the excitation circuit is connected; when the closing trigger 12 pivots away from the holding body 11, the excitation switch 24 moves accordingly and away from the trigger rod 261, the excitation switch 24 switches to the disconnected state, the excitation circuit is disconnected, and the trigger rod 261 slides to the initial position again under the action of the reset member 262.
  • the mounting seat 29 is integrally formed on the inner wall surface of the holding body 11, and has a mounting slot 291 extending along the second direction.
  • the mounting seat 29 faces the excitation switch 24.
  • the trigger rod 261 includes a sliding portion 261c matched with the mounting slot 291, a distal rod portion 261a extending distally from the sliding portion 261c and passing through the opening, and a proximal rod portion 261b extending proximally from the sliding portion 261c.
  • the reset member 262 may be a compression spring, which is sleeved on the proximal rod portion 261b, with one end abutting against the sliding portion 261c and the other end abutting against the inner wall of the mounting seat 29.
  • the excitation switch 34 is a push button switch
  • the trigger assembly 36 is at least partially located in the second accommodating chamber 12a of the closing trigger 12.
  • the trigger assembly 36 includes: a trigger rod 361 pivotally connected to the mounting seat 39 and a reset member 362 (not shown in the figure) mounted on the mounting seat 39 and acting on the trigger rod 361, and the trigger rod 361 swings along the third direction to trigger the excitation switch 34 to be turned on or off.
  • the excitation switch 34 is located in the second accommodating chamber 12a of the closing trigger 12, and a resisting portion 312 for cooperating with the trigger assembly 16 is provided in the first accommodating chamber 11c of the grip body 11.
  • the trigger rod 361 When the closing trigger 12 is in the non-excitation position, under the action of the reset member 362, the trigger rod 361 is in an initial position in which it abuts against the excitation switch 34 but does not trigger the excitation switch 34, or has a set gap; when the closing trigger 12 pivots to the excitation position, the first end (proximal end) 361a of the trigger rod 361 abuts against the abutment 312, and the second end (distal end) 361b of the trigger rod 361 overcomes the biasing force of the reset member 362 and acts on the excitation switch 34, so that the excitation switch 34 is in a pressed state and the excitation circuit is connected; when the closing trigger 12 pivots away from the holding body 11, the trigger rod 361 moves with the closing trigger 12 and away from the abutment 312, and the trigger rod 361 slides again to the initial position or non-excitation position in the direction away from the excitation switch 34 under the action of the reset member 362, and the excitation switch 34 switches to the disconnected
  • the abutment portion 312 in the first accommodating cavity 11c is formed as the inner wall surface of the first accommodating cavity 11c. More specifically, the inner wall surface is protruding relative to other areas of the first accommodating cavity 11c, and the surface that cooperates with the trigger rod 361 is a flat surface.
  • a pivot shaft or a pivot sleeve is provided in the second accommodating cavity 12a to form the mounting seat 39.
  • a pivot sleeve or a pivot shaft is correspondingly provided on the trigger rod 361 to realize the pivotal connection with the closing trigger 12.
  • the reset member 362 is sleeved on the trigger rod 361.
  • the trigger rod 361 extends from one side of the mounting seat 39 to a position opposite to the pressing portion of the excitation switch 34.
  • the trigger rod 361 is provided with a trigger protrusion 361b on the end surface opposite to the excitation switch 34.
  • the trigger protrusion 361b is used to act on the excitation switch 34 when the trigger rod 361 cooperates with the abutment portion 312, so that the excitation switch 34 is in a pressed state.
  • 11A-B show another embodiment of the electrosurgical instrument 100 provided by the present invention, in which the trigger switch 44 is configured as a push button switch.
  • the housing surface of the closing trigger 12 is provided with a trigger assembly 46 for triggering the trigger switch 44, and when the closing trigger 12 is pivoted to the trigger position, the trigger assembly 46 can trigger the trigger switch 44 to the on state by user manipulation.
  • the trigger assembly 46 includes a sealing cover body 461 installed on the mounting opening, and the sealing cover body 461 has an elastic deformation area opposite to the excitation switch 44.
  • the elastic deformation area of the sealing cover body 461 can be triggered and deformed to a set value in a direction close to the excitation switch 44, thereby triggering the excitation switch 44 to switch the state.
  • the trigger force of the elastic deformation area of the sealing cover body 461 is greater than the closing pivot force of the closing trigger 12, that is, when the closing trigger 12 is in the initial position, even if the user triggers the elastic deformation area of the sealing cover body 461, it first drives the closing trigger 12 to pivot toward the first position until the closing trigger 12 pivots to the excitation position. Since the excitation switch 44 abuts against the resistance portion 412, the user can continue to deform the elastic deformation area of the sealing cover body 461 to the set value, triggering the excitation switch 44 to the on state.
  • the sealing cover body 461 is connected to the mounting port side of the closing trigger 12 by snap-fitting, and the outer wall of the closing trigger 12 is rubber-coated in the area where the user holds it, and the rubber coating layer 12b covers the matching position between the sealing cover body 461 and the mounting port to prevent external dust and the like from entering the inner side of the closing trigger 12 along the gap between the two.
  • the excitation switch 54 is a contact switch, and at least a part of the excitation circuit is arranged on the control circuit board 28.
  • the excitation switch 54 includes: at least one first contact 54a located in the first accommodating cavity 11c and at least one second contact 54b located in the second accommodating cavity 12a, the first contact 54a is electrically connected to the power supply connection portion 15, and the second contact 54b is electrically connected to the control circuit board 28; when the closing trigger 12 is in the non-excitation position, the first contact 54a and the second contact 54b are in a separated state, and the excitation circuit is disconnected; when the closing trigger 12 is pivoted to the excitation position, the second contact 54b abuts against the first contact 54a, and the excitation circuit is connected.
  • first contacts 54a connected in parallel are arranged in the first accommodating cavity 11c of the holding body 11, and correspondingly, two second contacts 54b connected in parallel are arranged in the second accommodating cavity 12a of the closing trigger 12.
  • the closing trigger 12 is pivoted to the excitation position, the two groups of the second contacts 54b arranged in parallel cooperate with the first contacts 54a to connect the excitation circuit, thereby improving the reliability of the excitation switch 14.
  • first contact 54a and the second contact 54b can be pin-type contacts.
  • the pin-type contact includes a fixed base C1 and a movable pin C slidably connected to the fixed base C1.
  • a compression spring S is arranged between the movable pin C and the fixed base C1, which can ensure that the first contact 54a and the second contact 54b are reliably connected within a certain range when they are in contact.
  • the excitation switch 64 is a contact switch, and at least a part of the excitation circuit is arranged on the control circuit board 38.
  • the excitation switch 64 includes: at least one first contact 64a located in the first accommodating cavity 11c and at least one second contact 64b located in the second accommodating cavity 12a, the first contact 64a is electrically connected to the power supply connection portion 15 through the control circuit board 38; when the closing trigger 12 is in the non-excitation position, the first contact 64a and the second contact 64b are in a separated state, and the excitation circuit is disconnected; when the closing trigger 12 is pivoted to the excitation position, the second contact 64b abuts against the first contact 64a, and the excitation circuit is connected.

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Abstract

一种电外科器械（100），属于医疗器械领域，其包括：端部执行组件（30）；可操作地向端部执行组件（30）提供驱动力及电外科能量的手柄组件（10），手柄组件（10）包括握持主体（11）以及枢转地连接于握持主体（11）上的闭合扳机（12），握持主体（11）具有第一容纳腔（11c），闭合扳机（12）具有第二容纳腔（12a），第一容纳腔（11c）和/或第二容纳腔（12a）内设有能接通或断开激发电外科能量传输的激发开关（14）；闭合扳机（12）向握持主体（11）侧枢转至激发位置时，激发开关（14）被触发至接通状态，以向端部执行组件（30）提供电外科能量。电外科器械（100）缩短了使组织闭合及凝结（烧灼和密封）的操作时间，同时避免误操作激发开关（14）的问题。

Description

一种电外科器械
本申请要求在2022年11月4日提交中国专利局、申请号为202211378660.4、发明名称为“一种电外科器械”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及医疗器械领域，特别涉及一种电外科器械。
背景技术
高频电刀是一种进行组织切割的电外科器械，其通过电极尖端产生的高频高压电流与肌体接触时对组织进行加热，实现对肌体组织的分离和凝固，从而起到切割和止血的目的。双极电刀是具备双极功能的高频电刀，其通过高频高压电流在双极器械两极间流动，使血管壁脱水皱缩、血管内血液凝固，并使血管与血凝块互融为一体，实现对组织的分离和凝固。双极电刀因其热损伤较小，电切速度与电凝深度可控，被广泛应用各种精细外科手术中，如神经外科、血管外科、显微外科、整形外科等。
传统的双极电刀通常包括手柄组件、细长体组件和端部执行单元。手柄组件与能够输出高频高压电流的主机连接，端部执行单元包括一对抓取构件，这对抓取构件用于夹持待切割的组织，其通过设置于手柄组件侧的驱动机构及设置于手柄组件与细长体内的传动机构驱动。使用该双极电刀时，通过触发手柄组件上扳机实现抓取构件闭合以夹持待切割组织，再通过触发手柄组件上的激发按钮则可以激发高频能量。由于夹持组织和激发能量分开操作，操作步骤多，不利于医生更高效，更舒适的完成一台手术。另外，大部分双极电刀的激发按钮裸露在手柄组件外部，易造成使用者误激发情况，存在安全隐患。
发明内容
为此，本发明提出了一种容易操作且没有安全隐患的电外科器械。
针对上述技术问题，本发明提供如下技术方案：
一种电外科器械，包括：端部执行组件；可操作地向所述端部执行组件提供驱动力及电外科能量的手柄组件，所述手柄组件包括握持主体以及枢转地连接于所述握持主体上的闭合扳机，所述握持主体具有第一容纳腔，所述闭合扳机具有第二容纳腔，所述第一容纳腔和/或第二容纳腔内设有能接通或断开激发电外科能量传输的激发开关；所述闭合扳机向所述握持主体侧枢转至激发位置时，所述激发开关被触发至接通状态，以向所述端部执行组件提供电外科能量。
本发明的部分实施方式中，在端部执行组件处于打开状态下，所述闭合扳机的至少一部分容纳于所述握持主体的第一容纳腔内。
本发明的部分实施方式中，所述闭合扳机向接近所述握持主体方向枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐增大；所述闭合扳机向远离所述握持主体方向枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐减小。
本发明的部分实施方式中，进一步包括用于与产生电外科能量的主机电连接的供电连接部，以及与所述供电连接部电连接的控制电路板，在所述控制电路板上布置有激发电路，所述激发开关可操作地接通或断开激所述激发电路，以控制向端部执行组件输出电外科能量。
本发明的部分实施方式中，所述激发开关为按钮开关，所述第一容纳腔和/或第二容纳腔内还包括用于触发所述激发开关的触发组件，所述闭合扳机枢转至激发位置时，所述触发组件偏离初始状态并作用于所述激发开关上以使所述激发开关接通。
本发明的部分实施方式中，所述激发开关设置在所述第二容纳腔内，在所述闭合扳机枢转至激发位置时，所述激发开关可操作地被触发至接通状态。
本发明的部分实施方式中，所述第二容纳腔内还设置有触发组件，所述触发组件包括触发杆，所述触发杆可被操作偏离初始状态以作用于所述激发开关使其接通，以及与所述触发杆连接的复位件，所述复位件提供使 所述触发杆保持在初始状态的偏置力。
本发明的部分实施方式中，所述第二容纳腔内设置有安装座，所述触发组件的所述触发杆可滑动地设置在所述安装座上，并且所述触发杆在所述安装座上沿第一方向滑动以触发所述激发开关接通或断开；所述复位件设置于所述安装座上向所述触发杆提供偏置力。
本发明的部分实施方式中，所述复位件一端作用于所述激发开关，另一端作用于所述触发组件的触发杆；所述闭合扳机由激发位置向打开位置枢转的至少一部分运动中，保持所述激发开关接通。
本发明的部分实施方式中，所述第二容纳腔内设置有安装座，所述触发组件的所述触发杆可枢转地设置在所述安装座上，并且所述触发杆在所述安装座上沿第三方向枢转以触发所述激发开关接通或断开；所述复位件设置于所述安装座上向所述触发杆提供偏置力。
本发明的部分实施方式中，所述第一容纳腔内设有用于与所述触发组件配合的抵触部，所述闭合扳机枢转至激发位置时，所述抵触部抵接所述触发杆的一端，使所述触发杆克服所述复位件的偏置力，并作用于所述激发开关上使其导通。
本发明的部分实施方式中，所述安装座上还安装有所述激发开关以及控制电路板。
本发明的部分实施方式中，所述第二容纳腔内还设置有触发组件，所述触发组件设置在所述闭合扳机供使用者握持的壳体表面，所述闭合扳机枢转至激发位置时，所述触发组件可操作地接通所述激发开关。
本发明的部分实施方式中，所述闭合扳机上具有安装口，所述激发开关的按压侧朝向所述安装口，所述触发组件包括安装于所述安装口上的密封盖体，所述密封盖体具有与所述激发开关相对的弹性变形区域，所述密封盖体的弹性变形区域可被触发并至向接近激发开关的方向变形至设定位置时，接通所述激发开关。
本发明的部分实施方式中，所述闭合扳机的枢转触发力小于所述密封 盖体的弹性变形触发力。
本发明的部分实施方式中，所述第一容纳腔内还设置有触发组件，所述触发组件包括滑动连接于安装座上的触发杆，所述触发杆在所述安装座上沿第二方向滑动以触发所述激发开关接通或断开；复位件，所述复位件安装于所述装座上并作用于所述触发杆。
本发明的部分实施方式中，所述激发开关为触点式开关，所述激发开关包括：位于第一容纳腔内的至少一个第一触点，位于第二容纳腔内的至少一个第二触点，所述第一触点与所述供电连接部电连接，所述第一触点或所述第二触点与所述控制电路板电连接；所述闭合扳机枢转至所述激发位置时，所述第二触点抵接于所述第一触点上，接通所述激发电路。
本发明的部分实施方式中，所述握持主体与所述闭合扳机之间设置导引结构，所述导引结构用于导引所述闭合扳机的摆动方向。
本发明的部分实施方式中，所述手柄组件还包括第一弹性件与第二弹性件，所述闭合扳机克服第二弹性件的弹力向握持主体侧枢转至闭合位置，所述闭合扳机克服第一弹性件与第二弹性件的弹力向握持主体侧枢转至激发位置。
本发明的部分实施方式中，还包括细长体组件，所述细长体组件限定纵向轴线，其包括外套管，所述外套管的近端延伸至所述握持主体内侧。
本发明的部分实施方式中，所述闭合扳机通过连接部可操作地套设在所述外套管的近侧部上，所述连接部成型于所述闭合扳机的上端部且可枢转地安装在握持主体上。
本发明的部分实施方式中，所述握持主体在位于所述外套管的近侧端部设置止位件，位于握持主体内的所述外套管上沿近端至远端依次套设有近侧垫片、驱动套圈以及卡环，所述卡环与所述近侧垫片分别固定连接于外套管上，所述驱动套圈可沿外套管滑动；所述驱动套圈的近端设有弹簧垫片，所述闭合扳机的连接部套设于驱动套圈上，其两端分别抵接于弹簧垫片与所述卡环上；所述弹簧垫片与所述近侧垫片之间设有第一弹性件， 所述近侧垫片与所述止位件之间第二弹性件，且所述第一弹性件的弹性系数大于所述第二弹性件的弹性系数。
本发明的部分实施方式中，所述手柄组件还包括枢转地连接于握持主体上的切割扳机，切割扳机可操作地控制端部执行组件内的刀致动构件执行切割动作。
本发明同时提供一种电外科器械，包括：可操作地向端部执行组件提供驱动力及电外科能量的手柄组件，所述手柄组件包括握持主体以及枢转地连接于所述握持主体上的闭合扳机，所述握持主体具有第一容纳腔，所述闭合扳机具有第二容纳腔；所述第二容纳腔内设有能接通或断开激发电外科能量传输的激发开关；所述闭合扳机向所述握持主体侧枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐增大，枢转至激发位置时，所述激发开关被触发至接通状态；所述闭合扳机向远离所述握持主体方向枢转时，所述闭合扳机伸入所述第一容纳腔的区域逐渐减小，枢转至非激发位置时，所述激发开关切换至断开状态。
本发明的技术方案相对现有技术具有如下技术效果：
本发明提供的电外科器械中，握持主体和/或闭合扳机具有容纳腔；用于接通或断开激发电路的激发开关位于容纳腔内，闭合扳机由初始位置向握持主体侧枢转至闭合位置再继续枢转至激发位置时，激发开关被触发以激发电外科能量。实现了闭合扳机一键式联动激发电路，有效缩短了使组织闭合及凝结(烧灼和密封)的操作时间，同时，由于激发开关位于握持主体和/或闭合扳机的内部，有效防止由于操作失误触碰到激发按键的问题，减小对患者造成的安全隐患。
附图说明
下面将通过附图详细描述本发明中优选实施例，将有助于理解本发明的目的和优点，其中:
图1为本发明的电外科器械的一种具体实施方式的结构示意图；
图2为本发明具有插头形式供电连接部的电外科器械的示意图；
图3为本发明具有电滑环形式供电连接部的电外科器械的示意图；
图4为本发明的电外科器械中采用按钮式激发开关一种具体实施方式的示意图；
图5A为本发明的电外科器械一种具体实施方式中闭合扳机处于闭合位置的示意图；
图5B为本发明的电外科器械一种具体实施方式中闭合扳机处于激发位置的示意图；
图5C为本发明的电外科器械一种具体实施方式中闭合扳机处于初始打开位置的示意图；
图6为本发明的电外科器械的采用按钮开关的第一种具体实施方式中闭合扳机内部的结构示意图；
图7为本发明的电外科器械的采用按钮开关的第一种具体实施方式中第一触发组件的结构示意图；
图8为本发明的电外科器械的采用按钮开关的第一种具体实施方式中按钮开关与控制电路板的结构示意图；
图9A为本发明的电外科器械的采用按钮开关的第二种具体实施方式的初始打开位置的结构示意图；
图9B为本发明的电外科器械的采用按钮开关的第二种具体实施方式的激发位置的结构示意图；
图10A为本发明的电外科器械的采用按钮开关的第三种具体实施方式的初始打开位置的结构示意图；
图10B为本发明的电外科器械的采用按钮开关的第三种具体实施方式的激发位置的结构示意图；
图11A为本发明的电外科器械的采用按钮开关的第四种具体实施方式的初始打开位置的结构示意图；
图11B为本发明的电外科器械的采用按钮开关的第四种具体实施方式的激发位置的结构示意图；
图12A为本发明的电外科器械的采用触点式开关的第一种具体实施方式的初始打开位置的结构示意图；
图12B为本发明的电外科器械的采用触点式开关的第一种具体实施方式的激发位置的结构示意图；
图13为本发明的电外科器械的采用触点式开关的第一种具体实施方式中插针式触点的结构示意图；
图14A为本发明的电外科器械的采用触点式开关的第二种具体实施方式的初始打开位置的结构示意图；
图14B为本发明的电外科器械的采用触点式开关的第二种具体实施方式中闭合扳机侧的结构示意图。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼 此之间未构成冲突就可以相互结合。
在本发明各个实施例中，“远端/侧”指外科器械操作时远离操作者的一端，“近端/侧”则指外科器械被操作时靠近操作者的一端/侧。
本申请总体涉及一种医疗器械，特别涉及一种电外科手术器械，有时也被称为双极电刀，可以用于在外科手术过程中切割组织、凝结(烧灼和密封)组织和/或夹持组织，无论是在开放手术中还是在腹腔镜手术或者内窥镜手术中。由于手术器械可操作性地将电外科能量传输至端部执行组件30，以作用于组织，实现凝结(烧灼和密封)组织，如图1，本文所描述的手术器械也可以在未将电外科能量提供至端部执行组件30时，用于夹持和操作组织。端部执行组件30的夹钳，可以是可选择性地张开，从而使得端部执行组件30夹持组织，将电外科能量施加到组织上。
如图1所示，本发明提供的电外科器械100通常与输出电外科能量的主机(图中未示出)连接。可以理解的是，同一电外科器械100通过外部线缆40可以和多种不同的主机配合使用。电外科器械100包括由近端至远端依次连接的手柄组件10、细长体组件20和端部执行组件30。手柄组件10的近端部设置用于与主机实现电连接的供电连接部15。例如，在如图2所示的具体实施方式中，供电连接部15成型为插座或插头的形式，且被配置成易于与主机的输出端子或输出连接座连接。作为可替代的实施方式，如图3所示，供电连接部15’还可以配置为电滑环形式，以在执行部件旋转时提供可靠的电连接。
端部执行组件30用于操作组织以执行具体的手术操作，例如，对组织进行夹持、凝结、切割等手术操作。参照图1所示，所述端部执行组件30包括枢转连接的第一夹钳31和第二夹钳32，第一夹钳31与第二夹钳32向互相接近的方向枢转从而夹持组织，第一夹钳31与第二夹钳32向互相远离的方向枢转从而释放组织。或者，在可替代的实施方式中，端部执行组件30的第一夹钳31可被操作地朝向第二夹钳32枢转，直至闭合该端部执行组件30的钳口以夹持组织；第一夹钳31朝向远离第二夹钳32的方向枢转，直至打开端部执行组件30的钳口以释放组织，反之亦然。进一步地，第一夹钳31和第二夹钳32均包括与组织接触的电极片，以将 电外科能量传递给组织，实现电凝操作。
进一步如图1-3所示，手柄组件10的至少一部分由使用者握持，便于操作者操控该外科器械。手柄组件10可操作地向所述端部执行组件30提供驱动力，例如，闭合驱动力以及切割驱动力。手柄组件10包括能够由使用者握持的握持主体11以及枢转地连接于握持主体11上的闭合扳机12。使用者通过操作闭合扳机12来操作端部执行组件30执行闭合或打开动作。一种具体实施方式中，握持主体11包括第一半壳体和第二半壳体，第一半壳体与第二半壳体可通过卡扣连接、紧固件连接等方式实现可拆卸连接。握持主体11整体大体上呈T字形，包括沿纵向轴线C方向延伸的主体部11a以及沿大致垂直于所述纵向轴线方向或相对于纵向轴线方向倾斜一定角度延伸的握持部11b，其所述主体部11a及握持部11b内部形成第一容纳腔11c,可以容纳驱动机构及激发电路等。细长体组件20包括多个纵向部件，所述纵向部件将端部执行组件30可操作地联接至由手柄组件10容纳的多个致动器。细长体组件20包括外套管201，该外套管201限定了细长体的外表面，并且容纳其他部件移动穿过其中。例如，具体如图4所示，外套管201成型为相对于被轴向地接收于外套管201内的内致动构件202纵向运动。内致动构件202可以为杆、轴、冲压金属或其他合适的金属部件。
参照图4所示，闭合扳机12通过连接部123可操作地套设在细长体组件20的近侧部上，具体地，所述连接部123成型于所述闭合扳机12的上端部处并连接于外套管201的近侧部上。连接部123通过枢轴120可枢转地安装在握持主体11的壳体内。具体地，所述连接部123围绕设置于外套管201上的驱动套圈124的相对的侧部向上延伸，并且包括在其上的弧形的近侧驱动表面123a和远侧驱动表面123b。近侧驱动表面123a接合驱动套圈124的弹簧垫片124a的面向远侧的表面，在外套管201上还套设有卡环125，所述卡环125随外套管201的纵向运动而运动，驱动表面123b接合所述卡环125的面向近侧的表面。进一步地，在所述外套管 201上还套设有近侧垫片126，所述近侧垫片126随外套管201的纵向运动而运动，第一弹性件121套设在外套管201上，并且设置在所述近侧垫片126的远侧表面和驱动套圈124之间。在所述握持主体11的壳体上设置有止位件127，在近侧垫片126的近侧表面和止位件127的远侧表面之间设置有第二弹性件122。在一些具体实施方式中，第二弹性件122的弹性系数小于第一弹性件121，以在第一弹性件121和/或第二弹性件122被压缩时，给使用者提供不同的握持触感。
参照图4，所述手柄组件10还包括枢转地连接于握持主体11上的切割扳机13，使用者通过操作切割扳机13来操作端部执行组件30内的刀致动构件203执行切割动作。所述在外套管201内还设置用于输送电外科能量的线缆401和402，所述线缆401,402的远端分别与所述端部执行组件30的第一夹钳31与第二夹钳32连接，以将高频电外科能量传递给第一夹钳31和第二夹钳32上的组织凝闭电极片。在一些具体实施方式中，细长体组件20还包括内支撑管204，所述内支撑管204用于支撑和引导内致动构件202、刀致动构件203以及线缆401和402的布置。此外，在手柄组件10的远端部还设置有旋钮50，使用者操作拨转旋钮50可实现细长体组件20和端部执行组件30的整体绕纵向轴线C旋转。所述闭合扳机12远离所述连接部123的一侧延伸至与所述握持主体11的主体部11a相对。所述握持主体11的握持部11b在与所述闭合扳机12相对的一侧具有开口110，所述闭合扳机12可沿所述开口110滑动，以部分滑入或部分滑出所述第一容纳腔11c。
接下来将结合附图，详细描述本发明提供的电外科器械100实现闭合、激发和打开操作的具体结构。具体如图5A所示，所述闭合扳机12被操作向接近所述握持主体11方向(箭头A)枢转时，所述闭合扳机12进入所述第一容纳腔11c的区域逐渐增大，所述闭合扳机12的连接部123的近侧驱动表面123a驱动所述驱动套圈124的弹簧垫片124a向近侧移动(箭头P1)，由于第一弹性件121的弹性系数大于第二弹性件122的弹性系数， 在第一弹性件121的作用下，近侧垫片126亦随之向近侧移动(箭头P1)，从而进一步压缩第二弹性件122。由于近侧垫片126与细长体组件20的外套管201纵向固定连接，外套管201被操作随之向近侧移动(箭头P1)，实现外套管201与内致动构件202的相对运动，所述端部执行组件30的第一夹钳31与第二夹钳32之间的夹角逐渐减小，直至所述闭合扳机12枢转至闭合位置时，所述端部执行组件30处于闭合状态。
如图5B所示，所述闭合扳机12进一步被操作向接近所述握持主体11方向枢转时，所述闭合扳机12进入所述第一容纳腔11c的区域进一步增大，所述闭合扳机12的连接部123的近侧驱动表面123a驱动所述驱动套圈124的弹簧垫片124a继续向近侧移动(箭头P2)，第一弹性件121被进一步压缩。由于弹簧垫片124a可相对于细长体组件20的外套管201纵向运动，外套管201不会随弹簧垫片124a的近侧移动而移动，端部执行组件30保持在闭合状态。当闭合扳机12枢转激发位置时，例如，如图5B所示，触发组件16被触发使得激发电路被导通，电外科能量被提供给端部执行组件30。由于第一弹性件121的弹性系数大于第二弹性件122，在闭合扳机12被操作从闭合位置枢转至激发位置时，第一弹性件121提供给操作者更大的偏执力，使操作者很够根据握持触感的不同，区分出闭合操作与激发操作。
进一步如图5C所示，在完成激发操作后，所述闭合扳机12被操作向远离所述握持主体11方向(箭头B)枢转时，所述闭合扳机12进入所述第一容纳腔11c的区域逐渐减小，所述闭合扳机12的远侧驱动表面123b在第一弹性件121和/或第二弹性件122复位力的作用下，带动卡环125向远侧移动(箭头D)，使得细长体组件20的外套管201相对于内致动构件202向远侧移动，使所述端部执行组件30的第一夹钳31与第二夹钳32之间的夹角逐渐增大，端部执行组件30逐渐打开，直至所述闭合扳机12枢转至打开位置时，所述端部执行组件30处于最大打开状态。在一些具体实施方式中，所述闭合扳机12枢转至打开位置时，所述闭合扳机12 的至少部分区域位于所述第一容纳腔11c内。当然可以理解的是，使用者亦可以选择在闭合操作和打开操作中切换，以实现对目标组织的夹持和打开，而非电凝。
进一步如图2-4所示，所述握持主体11的第一容纳腔11c的内壁与所述闭合扳机12的外壁面之间设有导向结构，以支撑、引导所述闭合扳机12的枢转运动，避免闭合扳机12在第一容纳腔11c内晃动。所述导向结构包括设置于所述第一容纳腔11c内壁上的第一导引凸起111或第一导引凹槽；以及设置于所述闭合扳机12外壁面上与之配合的第二导引凹槽或第二导引凸起。示例的，可以通过所述第一容纳腔11c内壁上的第一导引凸起111与所述闭合扳机12外壁面的第二导引凹槽(图中未示出)配合以实现闭合扳机12闭合或打开动作的方向导引。当然，也可以通过所述第一容纳腔11c内壁上的第一导引凸起111与所述闭合扳机12外壁面的第二导引凸起(图中未示出)配合实现两者之间相对滑动的方向导引。在具体实施方式中，所述闭合扳机12包括第二容纳腔12a，所述第二容纳腔12a为朝向所述握持主体11侧开口的开口腔，所述第一容纳腔11c和/或第二容纳腔12a内设置激发开关，所述激发开关被设置成可操作地接通或断开对电外科器械100的电外科能量。例如，所述闭合扳机12枢转至激发位置时，所述激发开关14被触发使所述激发电路切换至接通状态，主机输出的电外科能量经由供电连接部15输出至向端部执行组件30上，以对端部执行组件30上的组织施加电外科能量以凝结组织，实现闭合扳机12一键式闭合、激发操作，缩短了器械夹持和凝结组织的操作时间，同时，由于激发开关位于握持主体11和/或闭合扳机12的内部，有效防止由于操作失误触碰到激发按键的问题，减小对患者造成的安全隐患。
其他可替代的实施方式中，所述闭合扳机12朝向所述握持主体11侧为不设置开口腔的实体端面，所述激发开关14设置于所述握持主体11的第一容纳腔11c内，所述闭合扳机12的端部设置用于触发所述激发开关的触发结构。闭合扳机12向所述握持主体11的第一容纳腔11c的内侧枢 转至激发位置，可触发所述激发开关14至接通状态。与该实施方式对应地，所述握持主体11朝向所述闭合扳机12侧为不设置开口腔的实体端面，所述激发开关设置于所述闭合扳机12的第二容纳腔12a内，所述握持主体11的端部设置用于触发所述激发开关的触发结构。
具体地，所述激发电路的至少一部分布置于控制电路板18上，所述激发开关位于所述供电连接部15与所述控制电路板18之间的连接线缆上。一种可选的实施方式中，所述控制电路板18安装于所述闭合扳机12的第二容纳腔12a内，由于闭合扳机12枢转至打开位置时，闭合扳机12仍有部分区域位于第一容纳腔11c内，控制电路板18位于第二容纳腔12a可以保护控制电路板18，避免外部灰尘或液体沿握持主体11与闭合扳机12之间的缝隙直接与控制电路板18接触。其他可替代的实施方式中，所述控制电路板18还可以安装于所述握持主体11的第一容纳腔11c内。
所述激发开关14可以为按钮开关，其通过按压按钮开关的按钮实现电路的接通，通过释放按钮开关的按钮实现电路的断开。或者，在其他替代的实施方式中，所述激发开关14还可以为触点式开关，其通过两个触点的接触或断开实现电路的接通或断开。可以理解的是，所述激发开关14还可以是其他能够实现电路的接通和断开的其他开关形式。例如，在一些激发开关14为按钮开关的具体实施方式中，所述第一容纳腔11c和/或第二容纳腔12a内还包括用于触发所述按钮开关的触发组件16，所述闭合扳机12枢转至第一位置时，所述触发组件偏离初始状态并作用于所述按钮开关上使所述激发电路处于接通状态。
图2-图8示出了本发明提供的电外科器械100的一种实施方式，在该实施方式中，激发开关14设置为按钮开关，在闭合扳机12的第二容纳腔12a内还设置有用于触发该激发开关14的触发组件16，其包括：触发杆161，所述触发杆161可滑动地连接于安装座19上，以及复位件162，所述复位件162安装于所述安装座19上，并作用于所述触发杆161，所述触发杆161在所述安装座19上沿第一方向滑动以触发所述激发开关14接 通或断开。其中，所述激发开关14设置于所述第二容纳腔12a内，并且，所述第一容纳腔11c内设有用于与触发组件16配合的抵触部112，所述闭合扳机12处于非激发位置时(例如闭合位置、打开位置或中间状态的某个位置)，所述触发杆161在复位件162所提供的偏置力的作用下处于初始位置，此时，所述触发杆161与所述激发开关14保持预设距离；当所述闭合扳机12枢转至激发位置时，所述触发杆161的第一端161a(近端)抵接于所述抵触部112上，所述触发杆161的第二端161b(远端)克服所述复位件162的弹性力作用于所述激发开关14上，使激发开关14处于被按压状态，激发电路被接通；当闭合扳机12向远离所述握持主体11侧枢转时，所述触发杆161随闭合扳机12移动并远离所述抵触部112，所述触发杆161在复位件162的作用下向远离所述激发开关14的方向再次滑动至初始位置。
在可替代的实施方式中，所述复位件162一端抵接于触发杆161，所述复位件162的另一端直接抵接于所述激发开关14上，以使闭合扳机12从激发开关14已致动位置至激发开关14未致动位置的至少一部分移动过程中维持激发开关14在激活状态。具体地，所述触发杆161的按压导致所述复位件162压缩于所述触发杆161和激发开关14之间，并且导致施加偏置力于激发开关14上。如果在操作切割扳机13过程中，闭合扳机12被误操作向远侧移动一定角度，例如，所述闭合扳机12的枢转角度低于例如5°时，所述复位件162(即当前被轻微地减压)通过维持在激发开关14上的弹簧力而补偿或部分抵消闭合扳机12向远侧移动的效果。闭合扳机12在向远侧的方向上移动的过程中，复位件162维持于激发开关14上的弹簧力足以保持其处于接通状态，以使得在操作切割扳机13过程中激发开关14不被释放和再次接通。当操作闭合扳机12远离抵触部112，以将端部执行组件30切换至打开状态的过程中，由于触发触发杆161移动的作用力远远小于触发激发开关14的作用力，所述复位件162随触发杆161移动至初始位置，所述激发开关14上的弹簧力变小或消失，因此， 激发开关14被释放。
其中，如图2-图4所示，所述第一容纳腔11c内的抵触部112成型为第一容纳腔11c的内壁面，更具体地，所述内壁面相对第一容纳腔11c的其他区域凸出设置，且与所述触发杆161配合的面为平直表面。如图5-7所示，所述触发杆161则成型为第一端161a的端部具有圆弧形的表面，以使其与抵触部112实现平滑地接触。所述触发杆161的第二端161b则成型为圆柱杆体形式，其与激发开关14的按压表面面接触，以实现可靠触发。所述触发杆161的第一端161a与第二端161b之间还设置滑动部161c。最佳如图7所示，所述安装座19上设有沿第一方向延伸的第一安装卡槽191，所述触发杆161的滑动部161c与第一安装卡槽191的槽壁配合实现滑动连接，所述第一安装卡槽191相对的两侧面上设有第一穿出孔和第二穿出孔，所述触发杆161的第一端161a与第二端161b可分别从第一穿出孔和第二穿出孔穿出至所述第一安装卡槽191外侧。在该实施例中，所述复位件162为压缩弹簧，所述压缩弹簧套设于所述触发杆161的第二端161b，其一端抵接在所述滑动部161c上。
初始状态或非激发状态下，所述压缩弹簧将所述触发杆161的滑动部161c抵接于所述第一安装卡槽191的第一侧面(近侧面)上，使所述触发杆161的第一端161a的至少一部分位于所述第一安装卡槽191外部；当闭合扳机12被操作向靠近握持主体11方向运动,使得触发组件16的触发杆161的第一端161a抵接于所述握持主体11的抵触部112上后，推动所述触发杆161向远离所述抵触部112的方向移动，使所述触发杆161的第二端161b的端部位于所述第一安装卡槽191外部，并作用于位于第一安装卡槽191外部的按钮开关14a上。
一种可选的实施方式中，如图6、图7所示，所述激发开关14及所述控制电路板18同时安装于所述安装座19上，以实现集成化安装。其中，所述安装座19上还设置有与所述第一安装卡槽191邻接的第二安装卡槽192，所述激发开关14卡接于所述第二安装卡槽192内，且所述激发开关 14的按压部朝向所述第一安装卡槽191的第二穿出孔，以便于所述触发杆161的第二端161b对其进行按压触发。
如图7所示，所述安装座19还设有用于固定线缆的线缆安装部193，所述线缆安装部193成型为沿第二方向延伸的杆体，杆体上设置若干线夹用于通过捆绑的方式固定线缆，所述杆体靠近闭合扳机12的远端内壁设置。所述安装座19通过卡接或插接的方式固定于所述闭合扳机12的第二容纳腔12a的内壁上，具体地，所述闭合扳机12的第二容纳腔12a的内壁具有若干筋条形成的插槽，所述安装座19的外壁插接于所述插槽内，所述插槽与所述安装座19之间具有定位凸起与定位凹槽，通过所述安装座19的可变形定位结构实现两者之间的可靠安装固定。
如图9A-B示出了本发明提供的电外科器械100的又一种实施方式，在该实施方式中，激发开关24设置为按钮开关，并至少部分设置于所述闭合扳机12的第二容纳腔12a内。触发组件26位于所述第一容纳腔11c内，其包括：滑动连接于安装座29上的触发杆261以及安装于所述安装座29上并作用于所述触发杆261的复位件262，所述触发杆261在所述安装座29上沿第二方向滑动以触发所述激发开关24接通或断开；其中，所述第二方向可以与第一方向相同也可以不同。所述激发开关24的至少一部分位于所述第二容纳腔12a内，所述闭合扳机12处于非激发位置时，复位件262的作用下所述触发杆261朝向激发开关24的端部伸出所述安装座29；所述闭合扳机12枢转至激发位置时，触发杆261克服所述复位件262的弹性力并作用于所述激发开关24上，使激发开关24处于被按压状态，激发电路被接通；当闭合扳机12向远离所述握持主体11侧枢转时，所述激发开关24随之移动并远离所述触发杆261，所述激发开关24切换至断开状态，激发电路断开，所述触发杆261则在复位件262的作用下再次滑动至初始位置。
所述安装座29一体成型于所述握持主体11内壁面上，安装座29上具有沿第二方向延伸的安装卡槽291，安装座29朝向所述激发开关24的 一侧具有开口。所述触发杆261包括与所述安装卡槽291配合的滑动部261c、从所述滑动部261c向远侧延伸并穿设于所述开口的远侧杆部261a，以及从所述滑动部261c向近侧延伸的近侧杆部261b，所述复位件262可以为压缩弹簧，其套设于所述近侧杆部261b上，一端抵接于所述滑动部261c，另一端抵接于所述安装座29内壁。
如图10A-B示出了本发明提供的电外科器械100的又一种实施方式，在该实施方式中，激发开关34为按钮开关，触发组件36至少部分位于闭合扳机12的第二容纳腔12a内。具体地，所述触发组件36包括其包括：可枢转地连接于安装座39上的触发杆361以及安装于所述安装座39上并作用于所述触发杆361的复位件362(图中未示出)，所述触发杆361沿第三方向摆动以触发激发开关34接通或断开。其中，所述激发开关34位于闭合扳机12的第二容纳腔12a内，握持主体11的第一容纳腔11c内设有用于与触发组件16配合的抵触部312。所述闭合扳机12处于非激发位置时，在复位件362的作用下所述触发杆361处于与激发开关34抵接但不触发所述激发开关34,或具有设定间隙的初始位置；所述闭合扳机12枢转至激发位置时，触发杆361的第一端(近端)361a抵接于所述抵触部312上，所述触发杆361的第二端(远端)361b克服所述复位件362的偏置力并作用于所述激发开关34上，使激发开关34处于被按压状态，激发电路被接通；当闭合扳机12向远离所述握持主体11侧枢转时，所述触发杆361随闭合扳机12移动并远离所述抵触部312，所述触发杆361则在复位件362的作用下向远离所述激发开关34的方向再次滑动至初始位置或非激发位置，所述激发开关34切换至断开状态，激发电路断开。
其中，所述第一容纳腔11c内的抵触部312成型为第一容纳腔11c的内壁面，更具体地，所述内壁面相对第一容纳腔11c的其他区域凸出设置，且与所述触发杆361配合的面为平直表面。所述第二容纳腔12a内设有枢转轴或枢转轴套以形成所述安装座39，所述触发杆361上对应设置枢转轴套或枢转轴以实现与闭合扳机12枢转连接，所述复位件362为套设于 所述枢转轴上的扭簧。所述触发杆361远离安装座39的一侧延伸至与所述激发开关34的按压部相对的位置处，所述触发杆361在与所述激发开关34相对的端面上设置触发凸起361b，触发凸起361b用于在触发杆361与抵触部312配合时作用于所述激发开关34上，使其处于按压状态。
如图11A-B示出本发明提供的电外科器械100的又一种实施方式，在该实施方式中，激发开关44设置为按钮开关。该具体实施方式中，所述闭合扳机12的壳体表面设置用于触发所述激发开关44的触发组件46，所述闭合扳机12枢转至激发位置时，所述触发组件46可通过使用者操控的方式触发所述激发开关44至接通状态。
具体地，所述闭合扳机12的壳体远离所述握持主体11侧的表面上设有安装口，所述激发开关44的按压侧朝向所述安装口，所述触发组件46包括安装于所述安装口上的密封盖体461，所述密封盖体461具有与所述激发开关44相对的弹性变形区域，所述密封盖体461的弹性变形区域可被触发并至向接近激发开关44的方向变形至设定值时，触发所述激发开关44切换状态。
为了避免在闭合扳机12处于非激发位置时，使用者误触发所述触发组件46，所述密封盖体461的弹性变形区域的触发力大于所述闭合扳机12的闭合枢转力，即所述闭合扳机12处于初始位置时，使用者即使触发密封盖体461的弹性变形区域，其首先驱动所述闭合扳机12向接近第一位置方向枢转，直至闭合扳机12枢转至激发位置后，由于激发开关44抵靠于所述抵触部412上，此时使用者才能继续使密封盖体461的弹性变形区域变形至设定值，触发所述激发开关44至接通状态。
具体地，所述密封盖体461通过卡接配合地方式连接于所述闭合扳机12的安装口侧，所述闭合扳机12的外壁在使用者握持的区域进行包胶处理，包胶层12b覆盖密封盖体461与安装口的配合位置，以避免外界灰尘等沿两者缝隙进入闭合扳机12内侧。
如图12A-B示出本发明提供的电外科器械100的又一种实施方式，在 该实施方式中，激发开关54为触点式开关，所述激发电路的至少一部分布置在控制电路板28上。所述激发开关54包括：位于第一容纳腔11c内的至少一个第一触点54a以及位于第二容纳腔12a内的至少一个第二触点54b，所述第一触点54a与所述供电连接部15电连接，所述第二触点54b与控制电路板28电连接；所述闭合扳机12处于非激发位置时，所述第一触点54a与所述第二触点54b处于分离状态，所述激发电路断开；所述闭合扳机12枢转至激发位置时，所述第二触点54b抵接于所述第一触点54a上，接通所述激发电路。
具体地，所述握持主体11的第一容纳腔11c内设置两个互相并联连接的第一触点54a，对应地，所述闭合扳机12的第二容纳腔12a内设置两个互相并联连接的第二触点54b，所述闭合扳机12枢转至所述激发位置时，两组互相并联设置的所述第二触点54b与所述第一触点54a配合，以接通所述激发电路，能够提高该激发开关14的作用可靠性。
进一步，所述第一触点54a与所述第二触点54b可以是插针式触点，具体地，如图13所示，所述插针式触点包括固定底座C1以及滑动连接于所述固定底座C1上的移动插针C，所述移动插针C与所述固定底座C1之间设置压缩弹簧S，其可以保证所述第一触点54a与所述第二触点54b两者接触时在一定范围下的可靠接通。
如图14A-B示出本发明提供的电外科器械100的又一种实施方式，在该实施方式中，激发开关64为触点式开关，所述激发电路的至少一部分布置在控制电路板38上。所述激发开关64包括：位于第一容纳腔11c内的至少一个第一触点64a以及位于第二容纳腔12a内的至少一个第二触点64b，所述第一触点64a与所述供电连接部15通过控制电路板38电连接；所述闭合扳机12处于非激发位置时，所述第一触点64a与所述第二触点64b处于分离状态，所述激发电路断开；所述闭合扳机12枢转至激发位置时，所述第二触点64b抵接于所述第一触点64a上，接通所述激发电路。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方 式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明的保护范围之中。

Claims (24)

  1. 一种电外科器械，包括：
    端部执行组件；
    可操作地向所述端部执行组件提供驱动力及电外科能量的手柄组件，所述手柄组件包括握持主体以及枢转地连接于所述握持主体上的闭合扳机，其特征在于，
    所述握持主体具有第一容纳腔，所述闭合扳机具有第二容纳腔，所述第一容纳腔和/或第二容纳腔内设有能接通或断开激发电外科能量传输的激发开关；
    所述闭合扳机向所述握持主体侧枢转至激发位置时，所述激发开关被触发至接通状态，以向所述端部执行组件提供电外科能量。
  2. 根据权利要求1所述的一种电外科器械，其特征在于，在端部执行组件处于打开状态下，所述闭合扳机的至少一部分容纳于所述握持主体的第一容纳腔内。
  3. 根据权利要求1所述的一种电外科器械，其特征在于，
    所述闭合扳机向接近所述握持主体方向枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐增大；所述闭合扳机向远离所述握持主体方向枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐减小。
  4. 根据权利要求1所述的一种电外科器械，其特征在于，进一步包括用于与产生电外科能量的主机电连接的供电连接部，以及与所述供电连接部电连接的控制电路板，在所述控制电路板上布置有激发电路，所述激发开关可操作地接通或断开激所述激发电路，以控制向端部执行组件输出电外科能量。
  5. 根据权利要求1所述的一种电外科器械，其特征在于，所述激发开关为按钮开关，所述第一容纳腔和/或第二容纳腔内还包括用于触发所述激发开关的触发组件，所述闭合扳机枢转至激发位置时，所述触发组件偏离初始状态并作用于所述激发开关上以使所述激发开关接通。
  6. 根据权利要求1所述的一种电外科器械，其特征在于，所述 激发开关设置在所述第二容纳腔内，在所述闭合扳机枢转至激发位置时，所述激发开关可操作地被触发至接通状态。
  7. 根据权利要求6所述的一种电外科器械，其特征在于，所述第二容纳腔内还设置有触发组件，所述触发组件包括触发杆，所述触发杆可被操作偏离初始状态以作用于所述激发开关使其接通，以及与所述触发杆连接的复位件，所述复位件提供使所述触发杆保持在初始状态的偏置力。
  8. 根据权利要求7所述的一种电外科器械，其特征在于，所述第二容纳腔内设置有安装座，所述触发组件的所述触发杆可滑动地设置在所述安装座上，并且所述触发杆在所述安装座上沿第一方向滑动以触发所述激发开关接通或断开；所述复位件设置于所述安装座上向所述触发杆提供偏置力。
  9. 根据权利要求8所述的一种电外科器械，其特征在于，所述复位件一端作用于所述激发开关，另一端作用于所述触发组件的触发杆；所述闭合扳机由激发位置向打开位置枢转的至少一部分运动中，保持所述激发开关接通。
  10. 根据权利要求7所述的一种电外科器械，其特征在于，所述第二容纳腔内设置有安装座，所述触发组件的所述触发杆可枢转地设置在所述安装座上，并且所述触发杆在所述安装座上沿第三方向枢转以触发所述激发开关接通或断开；所述复位件设置于所述安装座上向所述触发杆提供偏置力。
  11. 根据权利要求6-10任一项所述的一种电外科器械，其特征在于，所述第一容纳腔内设有用于与所述触发组件配合的抵触部，所述闭合扳机枢转至激发位置时，所述抵触部抵接所述触发杆的一端，使所述触发杆克服所述复位件的偏置力，并作用于所述激发开关上使其导通。
  12. 根据权利要求6-10任一项所述的一种电外科器械，其特征在于，所述安装座上还安装有所述激发开关以及控制电路板。
  13. 根据权利要求6所述的一种电外科器械，其特征在于，所述第二容纳腔内还设置有触发组件，所述触发组件设置在所述闭合扳机 供使用者握持的壳体表面，所述闭合扳机枢转至激发位置时，所述触发组件可操作地接通所述激发开关。
  14. 根据权利要求13所述的一种电外科器械，其特征在于，所述闭合扳机上具有安装口，所述激发开关的按压侧朝向所述安装口，所述触发组件包括安装于所述安装口上的密封盖体，所述密封盖体具有与所述激发开关相对的弹性变形区域，所述密封盖体的弹性变形区域可被触发并至向接近激发开关的方向变形至设定位置时，接通所述激发开关。
  15. 根据权利要求14所述的一种电外科器械，其特征在于，所述闭合扳机的枢转触发力小于所述密封盖体的弹性变形触发力。
  16. 根据权利要求6所述的一种电外科器械，其特征在于，所述第一容纳腔内还设置有触发组件，所述触发组件包括滑动连接于安装座上的触发杆，所述触发杆在所述安装座上沿第二方向滑动以触发所述激发开关接通或断开；复位件，所述复位件安装于所述装座上并作用于所述触发杆。
  17. 根据权利要求4所述的一种电外科器械，其特征在于，所述激发开关为触点式开关，所述激发开关包括：
    位于第一容纳腔内的至少一个第一触点，位于第二容纳腔内的至少一个第二触点，所述第一触点与所述供电连接部电连接，所述第一触点或所述第二触点与所述控制电路板电连接；
    所述闭合扳机枢转至所述激发位置时，所述第二触点抵接于所述第一触点上，接通所述激发电路。
  18. 根据权利要求1所述的一种电外科器械，其特征在于，所述握持主体与所述闭合扳机之间设置导引结构，所述导引结构用于导引所述闭合扳机的摆动方向。
  19. 根据权利要求1所述的一种电外科器械，其特征在于，所述手柄组件还包括第一弹性件与第二弹性件，所述闭合扳机克服第二弹性件的弹力向握持主体侧枢转至闭合位置，所述闭合扳机克服第一弹性件与第二弹性件的弹力向握持主体侧枢转至激发位置。
  20. 根据权利要求19所述的一种电外科器械，其特征在于，还 包括细长体组件，所述细长体组件限定纵向轴线，其包括外套管，所述外套管的近端延伸至所述握持主体内侧。
  21. 根据权利要求20所述的一种电外科器械，其特征在于，所述闭合扳机通过连接部可操作地套设在所述外套管的近侧部上，所述连接部成型于所述闭合扳机的上端部且可枢转地安装在握持主体上。
  22. 根据权利要求21所述的一种电外科器械，其特征在于，所述握持主体在位于所述外套管的近侧端部设置止位件，位于握持主体内的所述外套管上沿近端至远端依次套设有近侧垫片、驱动套圈以及卡环，所述卡环与所述近侧垫片分别固定连接于外套管上，所述驱动套圈可沿外套管滑动；所述驱动套圈的近端设有弹簧垫片，所述闭合扳机的连接部套设于驱动套圈上，其两端分别抵接于弹簧垫片与所述卡环上；所述弹簧垫片与所述近侧垫片之间设有第一弹性件，所述近侧垫片与所述止位件之间第二弹性件，且所述第一弹性件的弹性系数大于所述第二弹性件的弹性系数。
  23. 根据权利要求1所述的一种电外科器械，其特征在于，所述手柄组件还包括枢转地连接于握持主体上的切割扳机，切割扳机可操作地控制端部执行组件内的刀致动构件执行切割动作。
  24. 一种电外科器械，包括：可操作地向端部执行组件提供驱动力及电外科能量的手柄组件，所述手柄组件包括握持主体以及枢转地连接于所述握持主体上的闭合扳机，其特征在于，
    所述握持主体具有第一容纳腔，所述闭合扳机具有第二容纳腔；所述第二容纳腔内设有能接通或断开激发电外科能量传输的激发开关；所述闭合扳机向所述握持主体侧枢转时，所述闭合扳机进入所述第一容纳腔的区域逐渐增大，枢转至激发位置时，所述激发开关被触发至接通状态；所述闭合扳机向远离所述握持主体方向枢转时，所述闭合扳机伸入所述第一容纳腔的区域逐渐减小，枢转至非激发位置时，所述激发开关切换至断开状态。
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CN118383864A (zh) * 2024-06-26 2024-07-26 杭州豪韵医疗器械有限公司 一种五合一双极高频电刀

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CN118021424A (zh) 2024-05-14
JP2025541607A (ja) 2025-12-22
EP4585176A1 (en) 2025-07-16

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