Monopolar bipolar conversion electrocoagulation forceps hook

Abstract

This invention relates to the field of medical device technology, specifically to a monopolar / bipolar electrocoagulation forceps hook; it includes a handle, a cannula assembly, surgical instruments, an electrode assembly, and a power cord assembly. The cannula assembly is mounted on the handle via a connecting sleeve. The surgical instruments are located at the end of the cannula assembly furthest from the handle. The electrode assembly is located inside the handle, and the power cord assembly is electrically connected to the electrode assembly. The cannula assembly includes a telescopic cannula, a cannula electrode, and a pull rod electrode. The electrode assembly includes a first electrode and a second electrode. The first electrode is electrically connected to the cannula electrode, and the second electrode is electrically connected to the pull rod electrode. An elastic element is fixedly connected to one end of the telescopic cannula inside the handle housing. By adjusting the telescopic cannula, the current conduction between the elastic element and the first and second electrodes is adjusted, thereby realizing the monopolar / bipolar switching of the electrocoagulation forceps hook. During surgery, only the telescopic cannula switching control switch needs to be adjusted to complete the monopolar / bipolar switching. The structure is reasonable, the operation is convenient, and it meets the electrocoagulation needs in different surgical scenarios.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a monopolar / bipolar electrocoagulation hook. Background Technology

[0002] In surgical procedures, electrocoagulation forceps are common medical instruments, primarily used for tissue clotting and cutting. In some complex surgeries, surgeons often need to use both monopolar and bipolar electrocoagulation simultaneously. Monopolar electrocoagulation uses an active electrode and a loop electrode attached to the patient's skin. Current flows from the active electrode through the patient's tissue and finally reaches the loop electrode to complete the circuit. Monopolar electrocoagulation has higher power and is suitable for cutting and clotting larger areas of tissue. Bipolar electrocoagulation integrates two electrodes into the jaws of the surgical instrument. Current flows only locally in the tissue between the tips of the two electrodes. Bipolar electrocoagulation offers advantages such as precise hemostasis, small area of ​​damage, good directionality, and high precision, making it suitable for hemostasis in delicate anatomical areas.

[0003] In existing technologies, monopolar or bipolar electrocoagulation surgical instruments are usually designed independently. During surgery, surgeons need to alternate between different monopolar or bipolar instruments. Frequent instrument changes increase surgical time and reduce efficiency. In complex surgical situations, they cannot quickly respond to mode switching needs, significantly reducing surgical flexibility. Although some complex combination instruments exist, their structures are intricate and their operation is not convenient. Therefore, there is an urgent need for a monopolar / bipolar switching electrocoagulation hook that simplifies its structure, makes it easier to operate, and allows for rapid switching between monopolar and bipolar modes. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art and provide a monopolar to bipolar electrocoagulation hook with a reasonable structure and convenient operation, which can meet the electrocoagulation needs in different surgical scenarios.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A monopolar to bipolar electrocoagulation forceps hook, characterized in that it includes a handle, a cannula assembly, surgical instruments, an electrode assembly, and a power cord assembly, wherein the surgical instruments are disposed at the end of the cannula assembly away from the handle, the electrode assembly is disposed inside the handle, and the power cord assembly is electrically connected to the electrode assembly.

[0007] The sleeve assembly includes a telescopic sleeve, a sleeve electrode, and a pull rod electrode. The electrode assembly includes a first electrode and a second electrode. The first electrode is electrically connected to the sleeve electrode, and the second electrode is electrically connected to the pull rod electrode. An elastic element is also fixedly connected to one end of the telescopic sleeve inside the handle housing.

[0008] The power cord assembly includes a power cord, a bipolar plug, and a monopolar plug. By adjusting the position of the elastic element, it can be made to conduct or disconnect with the first electrode and the second electrode. In conjunction with the switching of the bipolar plug and the monopolar plug, the monopolar / bipolar switching of the electrocautery pliers hook can be realized.

[0009] Preferably, the handle housing has a first electrode mounting part and a second electrode mounting part. The first electrode is fixedly mounted on the first electrode mounting part, and the second electrode is fixedly mounted on the second electrode mounting part. A sleeve electrode fixing seat is also fixedly mounted on the first electrode mounting part. The sleeve electrode fixing seat is fixedly connected to the first electrode, and the sleeve electrode is fixedly mounted inside the sleeve electrode fixing seat. The first electrode mounting part has a slot-type structure design. The first electrode is fixedly mounted inside the slot of the first electrode mounting part. The slot also has a sleeve electrode fixing seat. The sleeve electrode fixing seat is fixedly engaged by the two housings of the handle. The sleeve electrode fixing seat has a hollow structure inside. The sleeve electrode is fixedly mounted in the hollow structure inside. The sleeve electrode fixing seat and the first electrode are tightly fitted on the first electrode mounting part. The current of the first electrode can be transmitted to the sleeve electrode through the sleeve electrode fixing seat. When the telescopic sleeve is adjusted, the two ends of the sleeve electrode fixing seat are precisely engaged in the slot of the first electrode mounting part, so that the sleeve electrode remains fixed during the telescopic sleeve's extension and retraction.

[0010] Preferably, the second electrode is provided with a mounting groove, one end of which has a pull rod hole for the pull rod electrode to pass through, and the other end has an elastic engaging part. The elastic engaging part is tightly fitted with the pull rod of the pull rod electrode by elastic force to achieve current conduction. The second electrode is fixedly mounted on the second electrode mounting part through the mounting groove and is made of elastic conductive material. The elastic engaging part of the second electrode is connected to the pull rod electrode by the elastic force of its own elastic material. The current through the second electrode can be conducted to the pull rod electrode after passing through the elastic engaging part, thus completing the current conduction between the second electrode and the pull rod electrode. Furthermore, when the pull rod electrode is stretched, the elastic engaging part of the second electrode can also be tightly fitted and contacted with the pull rod electrode, improving the stability and reliability of the device.

[0011] Preferably, the monopolar / bipolar electrocoagulation forceps hook further includes a connecting sleeve; the cannula assembly is mounted on the handle via the connecting sleeve, the telescopic cannula is made of insulating material, a limiting groove is formed on the telescopic cannula near the elastic element, and a limiting post is also provided inside the connecting sleeve to cooperate with the limiting groove; both the telescopic cannula and the cannula electrode are hollow structures, the cannula electrode is disposed inside the telescopic cannula, and the pull rod electrode is disposed inside the cannula electrode, wherein the inner diameter of the cannula electrode is larger than the outer diameter of the pull rod electrode; when the telescopic cannula is stretched, the end of the telescopic cannula moves forward and eventually fits onto the tail of the surgical instrument at the front end, the surgical forceps hook at the front end cannot be opened, so that the surgical forceps hook becomes electrically conductive. The device features a hook function, allowing the surgical instrument to switch from bipolar to monopolar mode. The surgical hook can perform electrocoagulation or electrocautery in monopolar mode. The telescopic sleeve is made of insulating material, preventing electric shock to medical personnel during adjustment and improving safety. A limiting groove on the telescopic sleeve works in conjunction with a limiting post inside the connecting sleeve. This prevents the telescopic sleeve from rotating during use, ensuring the reliability of the elastic components. The telescopic sleeve's extension stroke is determined by the length of the limiting groove; once it reaches both ends of the groove, the limiting post prevents further movement, avoiding the sleeve sliding out of the handle.

[0012] Preferably, the elastic element is made of conductive material and includes a snap-fit ​​portion, an elastic sheet, and a bending portion. The elastic element is snapped and fixed to the telescopic sleeve by the snap-fit ​​portion. The elastic sheet is fixedly disposed on the snap-fit ​​portion, extending towards and beyond the second electrode. The bending portion is disposed at the end of the elastic sheet and bends towards the second electrode. The snap-fit ​​portion of the elastic element can be a snap-fit ​​structure, a clamp structure, or a threaded fixing structure, etc. The elastic element is fixedly installed on the telescopic sleeve by the snap-fit ​​portion. When the telescopic sleeve moves in a telescopic movement, it can drive the elastic element to move together. The snap-fit ​​portion is provided with an elastic sheet that extends obliquely upward towards the second electrode. The extended end of the elastic sheet is also provided with a bending portion that extends towards the second electrode. When the telescopic sleeve is in a contracted state, the position of the bending portion should exceed the position of the second electrode. When the telescopic sleeve is stretched, the bending portion will eventually contact the second electrode under the action of the telescopic sleeve to achieve current conduction.

[0013] Preferably, a fixing post is provided inside the handle housing. In its natural state, when the telescopic sleeve is retracted, the highest point of the curved portion is higher than the lowest point of the fixing post. When the telescopic sleeve is extended, the elastic sheet undergoes elastic deformation under the pressure of the fixing post, causing the curved portion to contact the second electrode. The fixing post is positioned above the second electrode mounting portion, and the elastic sheet of the elastic element is positioned between the second electrode mounting portion and the fixing post. When the telescopic sleeve is retracted, the elastic sheet of the elastic element is in its natural state. When the telescopic sleeve is extended, the elastic sheet undergoes downward elastic deformation under the pressure applied by the fixing post during its forward movement. When the telescopic sleeve is extended to its farthest distance, the curved portion on the elastic sheet will contact the second electrode under the deformation, causing current to flow between the second electrode and the elastic element. Under the action of elastic force, it will contact the first electrode, which will connect the two originally independent first and second electrodes, turning them into a unipolar state, realizing the process of switching the electrocautery tongs hook from bipolar to unipolar. Conversely, after the telescopic sleeve is retracted, the elastic element will separate from the first and second electrodes, and the unipolar state will switch back to bipolar. The movement of the elastic element can also be achieved by opening an adjustment hole on the handle housing, installing a movable adjustment element on the adjustment hole and fixing it to the elastic element. By adjusting the adjustment element outside the handle, the elastic element can be moved, so that the elastic element is connected or disconnected from the first and second electrodes. The principle of realizing the unipolar-bipolar switching is to adjust the elastic element inside the handle housing to make it connected or disconnected from the two electrodes, and at the same time, cooperate with the corresponding control switching of the unipolar and bipolar plugs on the power cord, thereby realizing the unipolar-bipolar conversion of the electrocautery tongs hook.

[0014] Preferably, the power cord includes a power cord, a bipolar plug, a unipolar plug, and a control switch. The control switch is used to control the switching between the bipolar plug and the unipolar plug. The bipolar plug includes a first bipolar plug and a second bipolar plug, which are respectively connected to the positive and negative terminals of the main power supply. The control switch is used to switch the working state of the bipolar plug and the unipolar plug. The first bipolar plug and the second bipolar plug are used to provide positive and negative current to the electrocautery tongs hook in the bipolar state, while the unipolar plug is used to provide current to the unipolar state of the electrocautery tongs hook. Together with the electrode plate attached to the human body, a circuit is realized in the unipolar state, thereby realizing the unipolar working state of the electrocautery tongs hook.

[0015] Preferably, the positive terminal of the power cord is electrically connected to the first electrode, and the negative terminal of the power cord is electrically connected to the second electrode. When the control switch is switched to unipolar mode, the power cord will connect to the unipolar plug. In conjunction with the movement of the elastic element on the telescopic sleeve, the electrocautery pliers hook can switch between unipolar and bipolar modes. The control switch can switch between unipolar and bipolar modes. When it is necessary to switch modes, first switch the control switch to the off position, and then stretch or retract the telescopic sleeve. When the telescopic sleeve is stretched, it is in unipolar mode, and when it is retracted, it is in bipolar mode. Then switch the control switch to the corresponding position to more conveniently switch the electrocautery pliers hook between unipolar and bipolar modes.

[0016] Preferably, the surgical instrument includes a first clamp hook, a second clamp hook, a first insulating part, and a second insulating part. The first clamp hook is hinged to the cannula electrode, and the second clamp hook is hinged to the pull rod electrode. The first insulating part is disposed between the first clamp hook and the second clamp hook and hinged to each other. The second insulating part is fixedly installed at the end of the protruding end of the cannula electrode. The first clamp hook is electrically connected to the cannula electrode, and the second clamp hook is electrically connected to the pull rod electrode. In bipolar mode, the current generated by the main power supply will reach the first clamp hook through the first electrode and finally flow back to the second electrode through the second clamp hook, realizing the conduction of the bipolar circuit. In unipolar mode... In this formula, the current generated by the main power supply flows through the first electrode and the second electrode to the first clamp hook and the second clamp hook, and finally flows back through the electrode plate attached to the human body to complete the unipolar circuit conduction; by pulling the lever electrode, the opening and closing movement of the first clamp hook and the second clamp hook can be controlled, so that the electrocoagulation clamp hook can realize the electrocoagulation function during the operation. A first insulating part is provided between the first clamp hook and the second clamp hook to separate them, which can avoid short circuit between the two clamp hooks and cause electrocoagulation failure. The second insulating part is fixedly installed at the end of the cannula electrode. Both clamp hooks and the first insulating part are installed on the second insulating part, which can also effectively avoid the situation of positive and negative short circuit.

[0017] Preferably, the handle includes a grip and a push handle. The push handle is hinged inside the handle housing via a push handle mounting post. A pull rod fixing seat is also provided on one end of the push handle inside the handle housing. The pull rod fixing seat is fixedly connected to the pull rod electrode. Pressing the push handle moves the pull rod electrode, and the push handle is reset by a return spring. The end of the pull rod electrode is fixedly connected to the pull rod fixing seat, which is located on the push handle. Pressing the push handle can stretch the pull rod, allowing medical personnel to easily and conveniently open and close the electrocoagulation forceps. After pressing the push handle, the pull rod electrode is stretched backward, causing the first and second clamp hooks to open. After releasing the push handle, the push handle resets, the pull rod electrode returns to its original position, and the first and second clamp hooks close.

[0018] In summary, the beneficial effects of this invention are as follows:

[0019] 1. The monopolar to bipolar electrocoagulation forceps hook of the present invention can achieve convenient switching between monopolar and bipolar modes by adjusting the telescopic sleeve in conjunction with the control switch. There is no need to change surgical instruments. During the operation, only the telescopic sleeve needs to be stretched or contracted, and the mode can be switched by switching the control switch position. This reduces the time for changing instruments during the operation, improves the efficiency of the operation, and is more suitable for surgical scenarios that require frequent switching of operation modes.

[0020] 2. The monopolar to bipolar electrocoagulation forceps hook of the present invention, wherein the sleeve electrode and the pull rod electrode are isolated and installed through the sleeve electrode fixing seat and structural design, and together with the installation structure of the first electrode and the second electrode, as well as the design of the first insulating part and the second insulating part on the surgical instrument, can effectively avoid short circuit between the positive and negative electrodes of the electrocoagulation forceps hook, ensuring that the electrocoagulation forceps hook can work more stably and improving the working reliability and stability of the electrocoagulation forceps hook.

[0021] 3. The monopolar to bipolar electrocoagulation clamp hook of the present invention has an elastic locking part of the second electrode that is tightly attached to the pull rod electrode by elastic force, which ensures the stability of current conduction. The bending part of the elastic element and the elastic sheet can reliably contact the first electrode and the second electrode when the telescopic sleeve is stretched, which ensures smooth current conduction in monopolar mode and improves the stability of current conduction.

[0022] 4. The monopolar to bipolar electrocoagulation forceps hook of the present invention has a limiting groove on the telescopic sleeve and a limiting post in the connecting sleeve designed to limit the telescopic stroke of the telescopic sleeve, prevent it from slipping out of the handle, ensure the integrity of the surgical instrument structure, and reduce the incidence of surgical instrument failure.

[0023] 5. The monopolar-bipolar electrocoagulation forceps hook of the present invention, with the hook-shaped structure design of the first and second hooks, can better adapt to the scenario in which hook-shaped instruments need to be used flexibly for precise dissection and hemostasis during surgery, greatly improving the usability of the electrocoagulation forceps hook. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the single- and double-polar conversion electrocoagulation pliers hook of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the monopolar / bipolar conversion electrocoagulation hook of the present invention;

[0026] Figure 3 This is a schematic diagram of the handle housing structure of the single- and double-polar conversion electrocoating pliers hook of the present invention;

[0027] Figure 4This is a schematic diagram of the electrode mounting structure of the monopolar / bipolar conversion electrocoagulation pliers of the present invention;

[0028] Figure 5 This is a schematic diagram of the second electrode structure of the monopolar to bipolar electrocoagulation clamp hook of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the sleeve assembly of the single- and double-polar conversion electrocoagulation clamp hook of the present invention;

[0030] Figure 7 This is a schematic diagram of the elastic element structure of the single- and double-polar conversion electrocoagulation pliers hook of the present invention;

[0031] Figure 8 This is a schematic diagram of the telescopic sleeve retracted state structure of the single- and double-polar conversion electrocoagulation clamp hook of the present invention;

[0032] Figure 9 This is a schematic diagram of the telescopic sleeve of the single- and double-polar conversion electrocoagulation pliers of the present invention in the stretched state.

[0033] Figure 10 This is a schematic diagram of the power cord assembly structure of the single- and double-polar conversion electrocoagulation clamp hook of the present invention;

[0034] Figure 11 This is a schematic diagram of the surgical instrument structure of the monopolar / bipolar electrocoagulation forceps hook of the present invention.

[0035] In the diagram, the markings are: 10-handle, 110-grip, 120-press handle, 121-press handle mounting post, 122-pull rod fixing seat, 123-reset spring, 130-first electrode mounting part, 140-second electrode mounting part, 150-fixing post, 20-connecting sleeve, 210-limiting post, 30-cannula assembly, 310-telescopic cannula, 311-limiting groove, 320-cannula electrode, 330-pull rod electrode, 340-cannula electrode fixing seat, 40-surgical instrument, 410-first forceps hook, 42-... 0-Second clamp hook, 430-First insulating part, 440-Second insulating part, 50-Electrode group, 510-First electrode, 520-Second electrode, 521-Mounting groove, 522-Pull rod hole, 523-Elastic engaging part, 530-Elastic element, 531-Snap-fit ​​part, 532-Elastic sheet, 533-Bending part, 60-Power cord group, 610-Power cord, 620-Dual-pole plug, 621-First dual-pole plug, 622-Second dual-pole plug, 630-Single-pole plug, 640-Control switch. Detailed Implementation

[0036] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example

[0039] according to Figures 1-4 As shown in the figure, a monopolar to bipolar electrocoagulation forceps hook is characterized by comprising a handle 10, a connecting sleeve 20, a cannula assembly 30, a surgical instrument 40, an electrode assembly 50, and a power cord assembly 60. The surgical instrument 40 is disposed at the end of the cannula assembly 30 away from the handle 10, the electrode assembly 50 is disposed inside the handle 10, and the power cord assembly 60 is electrically connected to the electrode assembly 50.

[0040] The sleeve assembly 30 includes a telescopic sleeve 310, a sleeve electrode 320, and a pull rod electrode 330. The electrode assembly 50 includes a first electrode 510 and a second electrode 520. The first electrode 510 is electrically connected to the sleeve electrode 320, and the second electrode 520 is electrically connected to the pull rod electrode 330. An elastic element 530 is also fixedly connected to one end of the telescopic sleeve 310 inside the handle 10 housing.

[0041] The power cord assembly 60 includes a power cord 610, a bipolar plug 620, and a unipolar plug 630. By adjusting the position of the elastic element 530, it can achieve conduction or disconnection between the elastic element 530 and the first electrode 510 and the second electrode 520. In conjunction with the switching of the bipolar plug 620 and the unipolar plug 630, the unipolar switching of the electrocautery pliers hook can be realized.

[0042] according to Figure 2 , Figure 3 As shown, the handle 10 housing has a first electrode mounting part 130 and a second electrode mounting part 140. The first electrode 510 is fixedly mounted on the first electrode mounting part 130, and the second electrode 520 is fixedly mounted on the second electrode mounting part 140. A sleeve electrode fixing seat 340 is also fixedly mounted on the first electrode mounting part 130. The sleeve electrode fixing seat 340 is fixedly connected to the first electrode 510, and the sleeve electrode 320 is fixedly mounted inside the sleeve electrode fixing seat 340. The first electrode mounting part 130 has a slot-type structure design. The first electrode 510 is fixedly mounted inside the slot of the first electrode mounting part 130, and a sleeve electrode fixing seat is also provided in the slot. The mounting base 340 is fixed in place by two housings of the handle. The inside of the mounting base 340 is hollow, and the sleeve electrode 320 is fixedly installed in the hollow structure inside. The mounting base 340 is in close contact with the first electrode 510 on the first electrode mounting part 130. The current of the first electrode 510 can be transmitted to the sleeve electrode 320 through the mounting base 340. When the telescopic sleeve 310 is adjusted, the two ends of the mounting base 340 are locked in the slots of the first electrode mounting part 130, so that the sleeve electrode 320 always remains fixed during the telescopic sleeve 310's extension and retraction.

[0043] according to Figure 4 , Figure 5 As shown, the second electrode 520 is provided with a mounting groove 521. One end of the mounting groove 521 has a pull rod hole 522 for the pull rod electrode 330 to pass through, and the other end is provided with an elastic engaging part 523. The elastic engaging part 523 is tightly fitted with the pull rod of the pull rod electrode 330 through the elastic force to achieve current conduction. The second electrode 520 is fixedly mounted on the second electrode mounting part 140 through the mounting groove 521. It is made of elastic conductive material. The elastic engaging part 523 of the second electrode 520 is engaged with the pull rod electrode 330 through the elastic force of its own elastic material. The current through the second electrode 520 can be conducted to the pull rod electrode 330 after passing through the elastic engaging part 523, thus completing the current conduction between the second electrode 520 and the pull rod electrode 330. Furthermore, when the pull rod electrode 330 is stretched, the elastic engaging part 523 of the second electrode 520 can also be tightly fitted and contacted with the pull rod electrode 330.

[0044] according to Figure 6 As shown, the sleeve assembly 30 is mounted on the handle 10 via the connecting sleeve 20. The telescopic sleeve 310 is made of insulating material, and a limiting groove 311 is provided on the telescopic sleeve 310 near the elastic element 530. A limiting post 210 that cooperates with the limiting groove 311 is also provided inside the connecting sleeve 20. Both the telescopic sleeve 310 and the sleeve electrode 320 are hollow structures. The sleeve electrode 320 is located inside the telescopic sleeve 310, and the pull rod electrode 330 is located inside the sleeve electrode 320. The inner diameter of the sleeve electrode 320 is larger than the outer diameter of the pull rod electrode 330. The telescopic sleeve 310 is made of insulating material to prevent medical personnel from being injured by electric current when adjusting the telescopic sleeve 310 during use. The limiting groove 311 on the telescopic sleeve 310 and the limiting post inside the connecting sleeve 20 are also provided. The 210 components work together, with the limiting post 210 and the limiting groove 311 preventing the telescopic sleeve 310 from rotating during use, ensuring the reliability of the elastic element 530 installed on the telescopic sleeve 310. The telescopic stroke of the telescopic sleeve 310 is determined by the length of the limiting groove 311. When the telescopic adjustment reaches both ends of the limiting groove 311, the telescopic sleeve 310 will be unable to continue moving under the action of the limiting post 210, preventing the telescopic sleeve 310 from sliding directly out of the handle 10. The pull rod electrode 330 is located inside the sleeve electrode 320, allowing the pull rod electrode 330 to perform stretching movements inside the sleeve electrode 320. The inner diameter of the sleeve electrode 320 is larger than the outer diameter of the pull rod electrode 330, and the current on the sleeve electrode 320 and the current on the pull rod electrode 330 do not interfere with each other.

[0045] according to Figure 6 , Figure 7As shown, the elastic element 530 is made of conductive material and includes a snap-fit ​​portion 531, an elastic sheet 532, and a bending portion 533. The elastic element 530 is snapped and fixed to the telescopic sleeve 310 via the snap-fit ​​portion 531. The elastic sheet 532 is fixedly disposed on the snap-fit ​​portion 531, extending towards and beyond the second electrode 520. The bending portion 533 is disposed at the end of the elastic sheet 532 and bends towards the second electrode 520. The snap-fit ​​portion 531 of the elastic element 530 can be a snap-fit ​​structure, a clamp structure, or... The elastic element 530 is fixedly installed on the telescopic sleeve 310 through the snap-fit ​​part 531 using a threaded fixing structure and other fixing methods. When the telescopic sleeve 310 moves in a telescopic movement, it can drive the elastic element 530 to move together. The snap-fit ​​part 531 is provided with an elastic piece 532 that extends obliquely upward toward the second electrode 520. The extended end of the elastic piece 532 is also provided with a bent part 533 that moves toward the second electrode 520. When the telescopic sleeve 310 is in a retracted state, the position of the bent part 533 should be beyond the position of the second electrode 520.

[0046] according to Figure 8 , Figure 9 As shown, a fixing post 150 is provided inside the handle 10 housing. In its natural state, when the telescopic sleeve 310 is retracted, the highest point of the bent portion 533 is higher than the lowest point of the fixing post 150. When the telescopic sleeve 310 is stretched, the elastic piece 532 will undergo elastic deformation under the pressure of the fixing post 150, causing the bent portion 533 to contact the second electrode 520 and the elastic piece 532 to contact the first electrode 510. The fixing post 150 is located above the second electrode mounting portion 140, and the elastic piece 532 of the elastic element 530 is located between the second electrode mounting portion 140 and the fixing post 150. When the telescopic sleeve 310 is retracted, the elastic piece 532 of the elastic element 530 is in its natural state. When the telescopic sleeve 310 is stretched, the elastic piece 532 of the elastic element 530 is in its natural state. During its forward movement, the elastic plate 532 undergoes downward elastic deformation under the pressure applied by the fixed column 150. When the telescopic sleeve 310 is stretched to its farthest distance, the bent portion 533 on the elastic plate 532 will come into contact with the second electrode 520 under the deformation, causing current to flow between the second electrode 520 and the elastic element 530. The elastic plate 532 will then come into contact with the first electrode 510 under the elastic force, which will connect the two originally independent first electrodes 510 and second electrodes 520, turning them into a unipolar state, thus realizing the process of switching the electrocoagulation pliers hook from bipolar to unipolar. Conversely, when the telescopic sleeve 310 is retracted, the elastic element 530 will separate from the first electrode 510 and the second electrode 520, and the unipolar state will switch back to bipolar.

[0047] according to Figure 2 , Figure 10As shown, the power cord assembly 60 includes a power cord 610, a bipolar plug 620, a unipolar plug 630, and a control switch 640. The control switch 640 is used to control the switching between the bipolar plug 620 and the unipolar plug 630. The bipolar plug 620 includes a first bipolar plug 621 and a second bipolar plug 622, which are respectively connected to the positive and negative terminals of the main power supply. The control switch 640 is used to switch the working state of the bipolar plug 620 and the unipolar plug 630. The first bipolar plug 621 and the second bipolar plug 622 are used to provide positive and negative current to the electrocautery tongs hook in the bipolar state, while the unipolar plug 630 is used to provide current to the unipolar state of the electrocautery tongs hook, and together with the electrode plate attached to the human body, realizes the circuit in the unipolar state.

[0048] according to Figure 10 As shown, the positive terminal of the power cord 610 is electrically connected to the first electrode 510, and the negative terminal of the power cord 610 is electrically connected to the second electrode 520. When the control switch 640 is switched to the unipolar mode, the power cord 610 will be connected to the unipolar plug 630. With the movement of the elastic element 530 on the telescopic sleeve 310, the electrocautery pliers hook can switch between unipolar and bipolar modes. The control switch 640 can switch between unipolar and bipolar modes. When it is necessary to switch modes, first switch the control switch 640 to the off position, and then stretch or retract the telescopic sleeve 310. When the telescopic sleeve 310 is stretched, it is in unipolar mode, and when it is retracted, it is in bipolar mode. Then, the corresponding position of the control switch 640 can be used to switch the electrocautery pliers hook between unipolar and bipolar modes more conveniently.

[0049] according to Figure 11As shown, the surgical instrument 40 includes a first clamp 410, a second clamp 420, a first insulating part 430, and a second insulating part 440. The first clamp 410 is hinged to the cannula electrode 320, and the second clamp 420 is hinged to the pull rod electrode 330. The first insulating part 430 is disposed between the first clamp 410 and the second clamp 420 and hinged to each other. The second insulating part 440 is fixedly installed at the end of the protruding end of the cannula electrode 320. The first clamp 410 is electrically connected to the cannula electrode 320, and the second clamp 420 is electrically connected to the pull rod electrode 330. In bipolar mode, the current generated by the main power supply will reach the first clamp 410 through the first electrode 510 and finally flow back to the first clamp 410 through the second clamp 420. The two electrodes 520 enable the conduction of the bipolar circuit. In unipolar mode, the current generated by the main power supply flows through the first electrode 510 and the second electrode 520 to the first clamp 410 and the second clamp 420, and finally flows back through the electrode plate attached to the human body to complete the unipolar circuit conduction. By pulling the lever electrode 330, the opening and closing movement of the first clamp 410 and the second clamp 420 can be controlled, so that the electrocoagulation clamp can realize the electrocoagulation function during the operation. A first insulating part 430 is provided between the first clamp 410 and the second clamp 420 to separate them. The second insulating part 440 is fixedly installed on the end of the sleeve electrode 320. Both clamps and the first insulating part 430 are installed on the second insulating part 440.

[0050] according to Figure 2 , Figure 3 As shown, the handle 10 includes a grip 110 and a push handle 120. The push handle 120 is hinged to the inside of the handle 10 housing via a push handle mounting post 121. A pull rod fixing seat 122 is also provided on one end of the push handle 120 inside the handle 10 housing. The pull rod fixing seat 122 is fixedly connected to the pull rod electrode 330. Pressing the push handle 120 moves the pull rod electrode 330, and the push handle 120 is reset by a return spring 123. The end of the pull rod electrode 330 is connected to the pull rod fixing seat 122. The connection is fixed, and the pull rod fixing seat 122 is set on the handle 120. Pressing the handle 120 can realize the pulling rod's stretching movement, allowing medical staff to easily and conveniently open and close the electrocoagulation forceps. After pressing the handle 120, the pull rod electrode 330 will be stretched backward by force, causing the first forceps 410 and the second forceps 420 to open. After releasing the handle 120, the handle 120 returns to its original position, the pull rod electrode 330 returns to its original position forward, and the first forceps 410 and the second forceps 420 close.

Claims

1. A single-to-bipolar electrocoagulation tong hook, characterized in that, The device includes a handle (10), a cannula assembly (30), a surgical instrument (40), an electrode assembly (50), and a power cord assembly (60). The surgical instrument (40) is located at the end of the cannula assembly (30) away from the handle (10). The electrode assembly (50) is located inside the handle (10). The power cord assembly (60) is electrically connected to the electrode assembly (50). The sleeve assembly (30) includes a telescopic sleeve (310), a sleeve electrode (320), and a pull rod electrode (330). The electrode assembly (50) includes a first electrode (510) and a second electrode (520). The first electrode (510) is electrically connected to the sleeve electrode (320), and the second electrode (520) is electrically connected to the pull rod electrode (330). An elastic element (530) is also fixedly connected to one end of the telescopic sleeve (310) inside the handle (10) housing. The power cord assembly (60) includes a power cord (610), a bipolar plug (620), and a monopolar plug (630). By adjusting the position of the elastic element (530), it can be made to conduct or disconnect with the first electrode (510) and the second electrode (520). In conjunction with the switching of the bipolar plug (620) and the monopolar plug (630), the monopolar and bipolar conversion of the electrocautery pliers hook can be realized. The handle (10) housing is provided with a first electrode mounting part (130) and a second electrode mounting part (140). The first electrode (510) is fixedly mounted on the first electrode mounting part (130), and the second electrode (520) is fixedly mounted on the second electrode mounting part (140). A sleeve electrode fixing seat (340) is also fixedly mounted on the first electrode mounting part (130). The sleeve electrode fixing seat (340) is fixedly connected to the first electrode (510), and the sleeve electrode (320) is fixedly mounted inside the sleeve electrode fixing seat (340). The second electrode (520) is provided with a mounting groove (521). One end of the mounting groove (521) is provided with a pull rod hole (522) for the pull rod electrode (330) to pass through, and the other end is provided with an elastic locking part (523). The elastic locking part (523) is tightly attached to the pull rod of the pull rod electrode (330) by elastic force to realize current conduction. The elastic element (530) is made of conductive material and includes a snap-fit ​​part (531), an elastic sheet (532), and a bending part (533). The elastic element (530) is snapped and fixed to the telescopic sleeve (310) by the snap-fit ​​part (531). The elastic sheet (532) is fixedly disposed on the snap-fit ​​part (531). The elastic sheet (532) extends toward the second electrode (520) and beyond the second electrode (520). The bending part (533) is disposed at the end of the elastic sheet (532) and bends toward the second electrode (520). The handle (10) housing has a fixed post (150) inside. In its natural state, when the telescopic sleeve (310) is contracted, the highest point of the bent part (533) is higher than the lowest point of the fixed post (150). When the telescopic sleeve (310) is stretched, the elastic piece (532) will undergo elastic deformation under the pressure of the fixed post (150), so that the bent part (533) contacts the second electrode (520) and the elastic piece (532) contacts the first electrode (510).

2. The monopolar / bipolar electrocoagulation clamp hook according to claim 1, characterized in that, It also includes a connecting sleeve (20); the sleeve assembly (30) is installed on the handle (10) through the connecting sleeve (20), the telescopic sleeve (310) is made of insulating material, a limiting groove (311) is provided on the telescopic sleeve (310) near the elastic element (530), and a limiting post (210) that cooperates with the limiting groove (311) is also provided inside the connecting sleeve (20); the telescopic sleeve (310) and the sleeve electrode (320) are both hollow structures, the sleeve electrode (320) is located inside the telescopic sleeve (310), and the pull rod electrode (330) is located inside the sleeve electrode (320), wherein the inner diameter of the sleeve electrode (320) is larger than the outer diameter of the pull rod electrode (330).

3. The monopolar / bipolar electrocoagulation clamp hook according to claim 1, characterized in that, The power cord assembly (60) also includes a control switch (640), which is used to control the switching between the two-pole plug (620) and the single-pole plug (630). The two-pole plug (620) includes a first two-pole plug (621) and a second two-pole plug (622), which are respectively connected to the positive and negative terminals of the main power supply.

4. The monopolar / bipolar electrocoagulation clamp hook according to claim 3, characterized in that, The positive terminal of the power cord (610) is electrically connected to the first electrode (510), and the negative terminal of the power cord (610) is electrically connected to the second electrode (520). When the control switch (640) is switched to the unipolar mode, the power cord (610) will be connected to the unipolar plug (630). With the movement of the elastic element (530) on the telescopic sleeve (310), the electrocautery pliers hook can switch between unipolar and bipolar modes.

5. The monopolar / bipolar electrocoating clamp hook according to claim 1, characterized in that, The surgical instrument (40) includes a first clamp (410), a second clamp (420), a first insulating part (430), and a second insulating part (440). The first clamp (410) is hinged to the cannula electrode (320), and the second clamp (420) is hinged to the pull rod electrode (330). The first insulating part (430) is disposed between the first clamp (410) and the second clamp (420) and is hinged to each other. The second insulating part (440) is fixedly installed at the end of the protruding end of the cannula electrode (320).

6. The monopolar / bipolar electrocoagulation clamp hook according to claim 1, characterized in that, The handle (10) includes a grip (110) and a push handle (120). The push handle (120) is hinged to the inside of the handle (10) housing via a push handle mounting post (121). A pull rod fixing seat (122) is also provided on one end of the push handle (120) inside the handle (10) housing. The pull rod fixing seat (122) is fixedly connected to the pull rod electrode (330). By pressing the push handle (120), the pull rod electrode (330) is moved. The push handle (120) is reset by a return spring (123).

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