Surgical instrument integrating ultrasonic scalpel and monopolar electrosurgery

Abstract

The present invention discloses a surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel. The instrument has a built-in control mechanism that can switch between the ultrasonic scalpel component and the monopolar electric scalpel component. The control mechanism can synchronously switch the mechanical transmission structures and electronic signal circuits corresponding to the ultrasonic scalpel component and the monopolar electric scalpel component, respectively, to ensure that the monopolar electric scalpel and the ultrasonic scalpel are not powered on at the same time, thereby ensuring the reliability and safety of the monopolar electric scalpel and the ultrasonic scalpel when switching between them.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel. Background Art

[0002] Ultrasonic scalpels are surgical instruments that use high-frequency mechanical vibrations to generate high-frequency longitudinal mechanical vibrations at the blade tip, thereby achieving tissue cutting and hemostasis. Ultrasonic scalpels offer excellent advantages for tissue cutting and blood vessel closure. They facilitate cutting of larger tissues and vessels, minimize thermal damage, and can directly seal blood vessels. They are currently widely used in laparoscopic surgery and in thyroid and breast surgeries. Common ultrasonic scalpels, such as those disclosed in Chinese patent applications CN211704761U, CN109771000A, and CN207575204U, generally consist of a housing, trigger, blade assembly, and ultrasonic transducer. However, for tissue separation and closure of fine blood vessels, monopolar electrosurgical scalpels are more suitable. Monopolar electrosurgical scalpels have a finer blade diameter, enabling more precise tissue separation and faster cutting times. They also provide excellent hemostasis and coagulation properties for fine blood vessels. Common monopolar electrosurgical units are disclosed in publications CN211704821U and CN209186939U.

[0003] Ultrasonic scalpels and monopolar electroscalpels are common medical devices used in surgery. In order to achieve good surgical results, they need to be selected according to different operational requirements. Therefore, doctors need to frequently change scalpels during the operation, which will affect the surgical efficiency and surgical results. Therefore, a surgical instrument that integrates the functions of ultrasonic scalpels and monopolar electroscalpels and can be switched at will is needed, such as the multifunctional surgical instrument disclosed in Chinese patent application No. 202110556275.3.

[0004] However, in actual operation, since the voltages required for the operation of ultrasonic scalpels and monopolar electrosurgeries are different, the required operating voltage of monopolar electrosurgeries is above 1000V, while the operating voltage of ultrasonic scalpels is generally around 150V. The operating voltage required by monopolar electrosurgeries is much greater than the operating voltage required by ultrasonic scalpels. Therefore, it is not possible to simply switch between ultrasonic scalpels and electrosurgeries by switching the mechanical drive structure. The connection circuits between the two also need to be switched. However, the synchronization of the switching of the mechanical drive structure and the connection circuit affects the smoothness of operation. Therefore, how to ensure the synchronous switching of the mechanical drive structure and the connection circuit is a problem that needs to be solved at present. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a surgical instrument that integrates an ultrasonic scalpel and a monopolar electrosurgery unit.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel comprises a housing and a knife rod assembly, wherein the knife rod assembly is composed of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, the housing is provided with a trigger and a control button group, the knife rod assembly is located at the distal end of the housing, and the housing is built with a control mechanism capable of switching between the ultrasonic scalpel assembly and the monopolar electric scalpel assembly, the control mechanism comprising a driving gear shaft, a transmission assembly and a signal circuit, the driving gear shaft drives the monopolar electric scalpel assembly to move axially through the transmission assembly; the signal circuit comprises a circuit board connected to a power supply and two ultrasonic scalpel signal lines and a monopolar electric scalpel signal line respectively connected to the circuit board, the ends of the two ultrasonic scalpel signal lines and the monopolar electric scalpel signal line are respectively fixedly connected to wiring terminals; an electric contact element for connecting the two wiring terminals is fixedly provided on the outer circumferential surface of the driving gear shaft;

[0008] The drive gear shaft switches between a first state and a second state by reciprocating rotation. In the first state, the drive gear shaft is located at a first limit position. At this time, the distal end of the ultrasonic scalpel assembly protrudes outward from the monopolar electric scalpel assembly, and the connection terminal of the ultrasonic scalpel signal line is connected to the electric contact element, so that the circuit board controls the power supply to supply power to the ultrasonic scalpel assembly, and the trigger and control button group can control the operation of the ultrasonic scalpel assembly;

[0009] In the second state, the driving gear shaft is located at the second limit position. At this time, the driving gear shaft drives the monopolar electric knife assembly to move axially to the farthest end of its stroke. The distal end of the monopolar electric knife assembly protrudes outward from the ultrasonic knife assembly. At the same time, the terminal of the monopolar electric knife signal line is connected to the electric contact element, so that the circuit board controls the power supply to supply power to the monopolar electric knife assembly to control the operation of the monopolar electric knife assembly.

[0010] Preferably, the transmission assembly is a gear box, the driving gear shaft is radially inserted into the through hole on the gear box, and both ends of the driving gear shaft protrude from the housing, and both ends of the driving gear shaft are respectively fixed with a driving dial button for driving it to rotate, and a torsion spring is sleeved on the driving gear shaft to drive it to reset, and a group of the wiring terminals are fixed on the inner wall of the through hole.

[0011] Preferably, the gearbox includes a connecting gear, a transmission gear and a transmission rack, the connecting gear includes a coaxially stacked connecting inner ring gear and a connecting outer ring gear, the transmission gear includes a coaxially stacked transmission inner ring gear and a transmission outer ring gear, the transmission rack extends axially relative to the shell, and its distal end is fixedly connected to the proximal end of the monopolar electric knife assembly, a driving gear is eccentrically fixed on the driving gear shaft, the driving gear and the connecting inner ring gear, the connecting outer ring gear and the transmission inner ring gear, and the transmission outer ring gear and the transmission rack are meshed, so that the driving gear shaft drives the monopolar electric knife assembly to move axially by rotation.

[0012] Preferably, the driving gear, the connecting inner ring gear, and the connecting outer ring gear are all fan-shaped, and the inner wall of the top box body of the gear box is concave to form a limiting recess. In the first state, the top of the driving gear is clamped in the limiting recess, which is the first limit position of the driving gear shaft.

[0013] Preferably, the bottom of the driving gear has a convex portion, and the distal end of the gear box is provided with an axially extending slide groove, and a limit lock block is slidably provided in the slide groove, and a spring is abutted between the distal end of the limit lock block and the slide groove, and the proximal end of the limit lock block slides and abuts against the outer edge of the driving gear, and a limit bayonet matching the convex portion is provided at the top of its proximal end. In the second state, the convex portion is clamped in the limit bayonet, which is the second limit position of the driving gear shaft.

[0014] Preferably, the side of the limit lock block is connected to a release mechanism that drives it to reset, and the release mechanism includes a loosening button, a first connecting shaft, a first connecting rod, a second connecting rod and a second connecting shaft connected in sequence, the first connecting shaft is radially penetrated into the shell, and its two ends protrude from the shell and are respectively fixed with a loosening button, the cross-section of the connection between the first connecting shaft and the first connecting rod is non-circular, so as to drive the first connecting rod to rotate synchronously, and the second connecting shaft is pivotally arranged on the side of the limit lock block, and moves axially synchronously with the rotation of the first connecting rod, so that the protrusion slides out along the guide slope of the limit bayonet.

[0015] A surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel comprises a shell, a knife rod assembly consisting of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, and a trigger and control button group arranged on the shell, wherein the knife rod assembly is located at the distal end of the shell, and the shell has a built-in control mechanism that can switch between the ultrasonic scalpel assembly and the monopolar electric scalpel assembly, and the control mechanism includes at least a driving gear shaft and a signal circuit, and the driving gear shaft generates reciprocating rotation between a first limit position and a second limit position. Only when the driving gear shaft is located at the first limit position, the distal end of the ultrasonic scalpel assembly protrudes from the monopolar electric scalpel assembly and the ultrasonic scalpel assembly is controlled to be in an energized state through the signal circuit; and only when the driving gear shaft is located at the second limit position, the monopolar electric scalpel assembly moves axially to the farthest end of its stroke, protrudes from the farthest end of the ultrasonic scalpel assembly, and the monopolar electric scalpel assembly is controlled to be in an energized state through the signal circuit.

[0016] Preferably, the control mechanism drives the monopolar electric knife assembly to move axially through a group of transmission components. The transmission component includes a gear box and a connecting gear, a transmission gear and a transmission rack arranged therein. The connecting gear includes a coaxially stacked connecting inner ring gear and a connecting outer ring gear. The transmission gear includes a coaxially stacked transmission inner ring gear and a transmission outer ring gear. The transmission rack extends axially relative to the housing, and its distal end is fixedly connected to the proximal end of the monopolar electric knife assembly. A driving gear is eccentrically fixed on the driving gear shaft. The driving gear and the connecting inner ring gear, the connecting outer ring gear and the transmission inner ring gear, and the transmission outer ring gear and the transmission rack are meshed, so that the driving gear shaft drives the monopolar electric knife assembly to move axially by rotation.

[0017] Preferably, the driving gear, the inner ring connecting gear, and the outer ring connecting gear are all fan-shaped, and the inner wall of the top box body of the gear box is concave to form a limiting recess. In the first state, the top of the driving gear is clamped in the limiting recess, which is the first limit position of the driving gear shaft; the bottom of the driving gear has a convex portion, and the far end of the gear box is provided with an axially extending slide groove, and a limiting lock block is slidably provided in the slide groove, and a spring is abutted between the far end of the limiting lock block and the slide groove, and the proximal end of the limiting lock block is slidably abutted with the outer edge of the driving gear, and a limiting bayonet matching the convex portion is provided at the top of its proximal end. In the second state, the convex portion is clamped in the limiting bayonet, which is the second limit position of the driving gear shaft.

[0018] Preferably, the side of the limit lock block is connected to a release mechanism that drives it to reset, and the release mechanism includes a loosening button, a first connecting shaft, a first connecting rod, a second connecting rod and a second connecting shaft connected in sequence, the first connecting shaft is radially penetrated into the shell, and its two ends protrude from the shell and are respectively fixed with a loosening button, the cross-section of the connection between the first connecting shaft and the first connecting rod is non-circular, so as to drive the first connecting rod to rotate synchronously, and the second connecting shaft is pivotally arranged on the side of the limit lock block, and moves axially synchronously with the rotation of the first connecting rod, so that the protrusion slides out along the guide slope of the limit bayonet.

[0019] Preferably, the signal circuit includes a circuit board connected to a power supply and an ultrasonic scalpel signal line and a monopolar electroscalpel signal line respectively connected to the circuit board, the ends of the two ultrasonic scalpel signal lines and the monopolar electroscalpel signal line are respectively fixedly connected to wiring terminals, and an electric contact element connecting the two wiring terminals is fixedly provided on the outer circumference of the driving gear shaft;

[0020] When the driving gear shaft is located at the first limit position, the ultrasonic scalpel signal line is connected to the electric contact element, and the circuit board controls the power supply to supply power to the ultrasonic scalpel assembly, and the trigger and control button group can control the operation of the ultrasonic scalpel assembly;

[0021] When the driving gear shaft is located at the second limit position, the monopolar electrosurgical knife signal line is connected to the electric contact element. At this time, the circuit board controls the power supply to supply power to the monopolar electrosurgical knife assembly to control the operation of the monopolar electrosurgical knife assembly.

[0022] A surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel comprises a shell, a knife rod assembly consisting of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, and a trigger and control button group arranged on the shell, wherein the knife rod assembly is located at the distal end of the shell, and the shell has a built-in control mechanism and a signal circuit that can switch between the ultrasonic scalpel assembly and the monopolar electric scalpel assembly, wherein the control mechanism has a first limit position and a second limit position, and only when the control mechanism is located at the first limit position, the distal end of the ultrasonic scalpel assembly protrudes from the monopolar electric scalpel assembly and the ultrasonic scalpel assembly is controlled to be in an energized state through the signal circuit; and only when the control mechanism is located at the second limit position, the monopolar electric scalpel assembly moves axially to the farthest end of its stroke, protrudes from the farthest end of the ultrasonic scalpel assembly, and the monopolar electric scalpel assembly is controlled to be in an energized state through the signal circuit.

[0023] Preferably, the control mechanism is a driving gear shaft, and the driving gear shaft rotates back and forth between a first limit position and a second limit position.

[0024] The signal circuit includes a circuit board connected to a power supply and an ultrasonic scalpel signal line and a monopolar electroscalpel signal line respectively connected to the circuit board, the ends of the two ultrasonic scalpel signal lines and the monopolar electroscalpel signal line are respectively fixedly connected to wiring terminals, and an electric contact element connected to the two wiring terminals is fixedly provided on the outer circumference of the driving gear shaft;

[0025] When the driving gear shaft is located at the first limit position, the ultrasonic scalpel signal line is connected to the electric contact element, and the circuit board controls the power supply to supply power to the ultrasonic scalpel assembly, and the trigger and control button group can control the operation of the ultrasonic scalpel assembly;

[0026] When the driving gear shaft is located at the second limit position, the monopolar electrosurgical knife signal line is connected to the electric contact element. At this time, the circuit board controls the power supply to supply power to the monopolar electrosurgical knife assembly to control the operation of the monopolar electrosurgical knife assembly.

[0027] The beneficial effects of the present invention are mainly reflected in:

[0028] 1. A control mechanism is provided to enable the transmission assembly for driving the axial movement of the monopolar electrosurgery assembly and the signal circuit for switching the circuit to be driven by the rotation of the drive gear shaft, thereby achieving synchronous switching of the mechanical drive structure and connection circuit of the monopolar electrosurgery assembly and the ultrasonic scalpel assembly, ensuring smooth switching between the monopolar electrosurgery and the ultrasonic scalpel during operation. At the same time, the synchronous switching of the mechanical drive structure and the connection circuit can form an interlocking relationship between the monopolar electrosurgery and the ultrasonic scalpel when switching, and the situation where the monopolar electrosurgery and the ultrasonic scalpel are powered on at the same time will not occur, thereby ensuring the reliability and safety of the monopolar electrosurgery and the ultrasonic scalpel when switching between them and avoiding misoperation;

[0029] 2. Both ends of the driving gear shaft are fixed with driving dial buttons, which are convenient for users to use either hand for one-handed operation. At the same time, a torsion spring is installed on the driving gear shaft to automatically reset it. Similarly, the loosening mechanism for loosening the driving gear shaft is also driven by a loosening dial button that can be toggled, which is convenient for users to use either hand for one-handed operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0031] Figure 1 : A schematic diagram of an embodiment of the present invention;

[0032] Figure 2 : Schematic diagram of the internal structure of an embodiment of the present invention in the first state;

[0033] Figure 3 : Figure 2 A magnified schematic diagram of part A;

[0034] Figure 4 : Schematic diagram of the internal structure of an embodiment of the present invention in the second state;

[0035] Figure 5 : Figure 4 An enlarged schematic diagram of part B;

[0036] Figure 6 : A schematic diagram of a loosening structure according to an embodiment of the present invention;

[0037] Figure 7 : A schematic diagram of a signal circuit in a first state according to an embodiment of the present invention;

[0038] Figure 8 : Schematic diagram of the signal circuit in the second state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0040] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0041] like Figures 1 to 8In the preferred embodiment shown, the present invention discloses a surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel, comprising a shell 1 and a knife rod assembly, wherein the knife rod assembly is composed of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, a trigger 2 and a control button group are provided on the shell 1, and the knife rod assembly is located at the distal end of the shell 1, and the shell 1 has a built-in control mechanism that can switch between the ultrasonic scalpel assembly and the monopolar electric scalpel assembly, the control mechanism comprising a driving gear shaft 3, a transmission assembly and a signal circuit, the driving gear shaft 3 drives the monopolar electric scalpel assembly to move axially through the transmission assembly; the signal circuit comprises a circuit board 6 connected to a power supply and two ultrasonic scalpel signal lines 604 and a monopolar electric scalpel signal line 605 respectively connected to the circuit board 6, the ends of the two ultrasonic scalpel signal lines 604 and the monopolar electric scalpel signal line 605 are respectively fixed with wiring terminals 606; an electric contact element 603 for connecting the two wiring terminals 606 is fixed on the outer circumferential surface of the driving gear shaft 3.

[0042] Such a structural arrangement enables the driving gear shaft 3 to switch between the first state and the second state by reciprocating rotation. Figure 2 、 Figure 3 As shown, in the first state, the driving gear shaft 3 is located at the first limit position. At this time, the distal end of the ultrasonic knife assembly protrudes from the monopolar electric knife assembly, and the connection terminal 606 of the ultrasonic knife signal line 604 is connected to the electric contact element 603, so that the circuit board 6 controls the power supply to supply power to the ultrasonic knife assembly, and the trigger 2 and the control button group can control the operation of the ultrasonic knife assembly.

[0043] like Figure 4 and Figure 5 As shown, in the second state, the driving gear shaft 3 is located at the second limit position. At this time, the driving gear shaft 3 drives the monopolar electrosurgical knife assembly to move axially to the farthest end of its stroke. The distal end of the monopolar electrosurgical knife assembly protrudes outward from the ultrasonic knife assembly. At the same time, the terminal 606 of the monopolar electrosurgical knife signal line 605 is connected to the electric contact element 603, so that the circuit board 6 controls the power supply to supply power to the monopolar electrosurgical knife assembly to control the operation of the monopolar electrosurgical knife assembly.

[0044] This solution sets up a control mechanism to enable the transmission component for driving the axial movement of the monopolar electrosurgery assembly and the signal circuit for switching the circuit to be driven by the rotation of the driving gear shaft 3, thereby realizing the synchronous switching of the mechanical drive structure (described in detail later) and the connection circuit of the monopolar electrosurgery assembly and the ultrasonic scalpel assembly, ensuring the smoothness of switching between the monopolar electrosurgery and the ultrasonic scalpel during operation. At the same time, the synchronous switching of the mechanical drive structure and the connection circuit can form an interlocking relationship between the monopolar electrosurgery and the ultrasonic scalpel when switching, and the situation where the monopolar electrosurgery and the ultrasonic scalpel are powered on at the same time will not occur, thereby ensuring the reliability and safety of the monopolar electrosurgery and the ultrasonic scalpel when switching and avoiding misoperation.

[0045] In this preferred embodiment, the specific solution for switching the mechanical drive structure of the monopolar electrosurgery assembly and the ultrasonic scalpel assembly is achieved through a gear box 4. The drive gear shaft 3 is radially inserted into the through hole 401 on the gear box 4, and the two ends of the drive gear shaft 3 protrude from the housing 1. The two ends of the drive gear shaft 3 are respectively fixed with a drive dial 302 for driving its rotation. The drive gear shaft 3 is sleeved with a torsion spring 303 for driving its reset, and a group of the wiring terminals 606 are fixed on the inner wall of the through hole 401. Such a structure can facilitate the user to use either hand for single-handed operation, and the torsion spring 303 can help the drive gear shaft 3 to automatically reset after the limit is released. In other feasible embodiments, the transmission assembly can also adopt other feasible transmission structures, such as a worm gear.

[0046] The gearbox 4 includes a connecting gear, a transmission gear, and a transmission rack 405. The connecting gear includes a coaxially stacked connecting inner ring gear 403 and a connecting outer ring gear 404. The transmission gear includes a coaxially stacked transmission inner ring gear 409 and a transmission outer ring gear 410. The transmission rack 405 extends axially relative to the housing 1, and its distal end is fixedly connected to the proximal end of the monopolar electrosurgical unit. A drive gear 301 is eccentrically fixed to the drive gear shaft 3. The drive gear 301 and the connecting inner ring gear 403, the connecting outer ring gear 404 and the transmission inner ring gear 409, and the transmission outer ring gear 410 and the transmission rack 405 are meshed, so that the drive gear shaft 3 drives the monopolar electrosurgical unit to move axially through rotation. This structural arrangement can minimize the volume of the gearbox 4, thereby streamlining the volume of the housing 1 as much as possible and optimizing the outer profile of the housing 1 for easy single-handed handling.

[0047] It should be noted that the mechanical drive structure and connection circuitry for achieving synchronous switching between the monopolar electrosurgery assembly and the ultrasonic scalpel assembly by rotating the drive gear shaft 3 in this preferred embodiment can also be implemented by other components, such as the transmission rack 405. This component only needs to have a first limit position and a second limit position. For example, when the transmission rack 405 is in the first limit position, the distal end of the ultrasonic scalpel assembly protrudes beyond the monopolar electrosurgery assembly and simultaneously controls the ultrasonic scalpel assembly to be energized via the signal circuit; and when the transmission rack 405 is in the second limit position, the monopolar electrosurgery assembly moves axially to its farthest end, protruding beyond the farthest end of the ultrasonic scalpel assembly, and controls the monopolar electrosurgery assembly to be energized via the signal circuit. Therefore, any component in the gearbox and its associated structure that has a first limit position and a second limit position can serve as the drive source for the mechanical drive structure and connection circuitry for achieving synchronous switching between the monopolar electrosurgery assembly and the ultrasonic scalpel assembly.

[0048] The driving gear 301 and the connecting outer ring gear 404 are both fan-shaped, so that a limited stroke is formed between the meshing teeth on their outer edges, thereby further reducing the box volume of the gear box 4 and facilitating installation.

[0049] Further, such as Figure 2 or Figure 3 As shown, the drive gear 301, the inner ring gear 403, and the outer ring gear 404 are all sector-shaped. The inner wall of the top of the gearbox 4 is concave to form a limiting recess 402. In the first state, the top of the drive gear 301 is locked in the limiting recess 402, which is the first limit position of the drive gear shaft 3. The non-circular structure of the drive gear 301 allows it to use the side wall of the gearbox 4 to form a reliable abutment with the limiting recess 402 to determine its initial position.

[0050] The bottom of the driving gear 301 has a protrusion 304, and the distal end of the gear box 4 is provided with an axially extending slide groove 406, and a limit lock block 305 is slidably provided in the slide groove 406, and a spring 306 is abutted between the distal end of the limit lock block 305 and the slide groove 406, and the proximal end of the limit lock block 305 is in sliding abutment with the outer edge of the driving gear 301, and a limit bayonet 3051 matching the protrusion 304 is provided at the top of its proximal end. In the second state, the protrusion 304 is clamped in the limit bayonet 3051, which is the second limit position of the driving gear shaft 3. The eccentric setting between the driving gear 301 and the driving gear shaft 3 enables the driving gear 301 to push the limiting lock block 305 to move axially during rotation until the protrusion 304 is engaged in the limiting bayonet 3051, thereby effectively locking the driving gear 301 and limiting it to its second limiting position, so that the driving gear 301 maintains its position unchanged during the use of the monopolar electrosurgical unit.

[0051] Further, such as Figure 6 As shown, the side of the limit lock block 305 is connected to a release mechanism that drives it to reset. The release mechanism includes a loosening button 5, a first connecting shaft 501, a first connecting rod 502, a second connecting rod 503, and a second connecting shaft 504 connected in sequence. The first connecting shaft 501 is radially arranged in the housing 1, and its two ends protrude from the housing 1 and are respectively fixed with a loosening button 5. The cross-section of the connection between the first connecting shaft 501 and the first connecting rod 502 is non-circular, so as to drive the first connecting rod 502 to rotate synchronously. The second connecting shaft 504 is pivotally arranged on the side of the limit lock block 305 and moves axially synchronously with the rotation of the first connecting rod 502, so that the protrusion 304 slides out along the guide slope 3052 of the limit bayonet 3051. At this time, the limit lock block 305 is reset under the push of the spring 306. The loosening button 5 is respectively arranged on the left and right sides of the housing 1, which can facilitate the user to use either hand for single-handed operation. The gear box 4 is provided with a waist-shaped hole 408 for connecting the second connecting shaft 504 with the limiting lock block 305 to avoid positioning.

[0052] The ultrasonic knife assembly includes a transducer 7 and a knife rod assembly. The transducer 7 is axially fixed in the shell 1 and electrically connected to the circuit board 6. A power cord (not shown in the figure) is provided on the shell 1 and is electrically connected to the proximal end of the transducer 7. The power cord is used to connect to a power source. The knife bar assembly is arranged at the distal end of the transducer 7 and extends from the distal end of the shell 1. The knife bar assembly includes a knife bar 701, an inner sleeve 702, an outer sleeve 703, and a clamp 704. The knife bar 701 is fixed to the distal end of the transducer 7. The inner sleeve 702 is slidably sleeved on the outside of the knife bar 701 and driven axially by the wrench 2. The outer sleeve 703 is sleeved on the outside of the inner sleeve 702 and fixed to the proximal end of the knife bar 701. The clamp 704 is pivotally arranged at the distal end of the inner sleeve 702 and forms a jaw between the distal end of the knife bar 701. The inner sleeve 702 drives the clamp 704 to pivot relative to the distal end of the knife bar 701 through axial movement to realize the opening and closing of the jaw.

[0053] A driving arm 705 is fixedly attached to the proximal end of the inner sleeve 702, which moves along the slot 803. A return spring 706 abuts the proximal end of the driving arm 705. The inner end of the trigger 2 is pivotally connected to the driving arm 705, so that rotation drives the driving arm 705 to move axially. The opening and closing of the jaws by rotating the inner sleeve 702 via the trigger 2 is conventional technology and is not the focus of this solution, so it will not be described in detail here.

[0054] The control button group includes a first button 901 and a second button 902. Each of the first and second buttons 901 and 902 is connected to a corresponding flexible circuit board 608 that can be triggered by pressing. The flexible circuit board 608 is electrically connected to the ultrasonic scalpel connection harness 601. A structure is provided between the first and second buttons 901 and 902 to prevent simultaneous triggering. One of the first and second buttons 901 and 902 is used to control the blade rod 701 for freezing and the other for cutting. Both the first and second buttons 901 and 902 are electrically connected to the circuit board 6 via the ultrasonic scalpel connection harness 601. The circuit board 6 is also electrically connected to the transducer 7 to control the transducer 7 to power the ultrasonic scalpel connection harness 601.

[0055] Specifically, each of the first and second buttons 901, 902 has a connection hole on one side for pivotally connecting them to the inner wall of the housing 1, allowing the first and second buttons 901, 902 to rotate around the axis of their respective connection holes. The first and second buttons 901, 902 are arranged non-parallel, and the distance between them is greater than the distance between the two flexible circuit boards 608 to which they are connected, so that the pressing directions of the first and second buttons 901, 902 do not interfere with each other. A protrusion 9021 that matches the inner contour of the first button 901 is provided on one side of the interior of the second button 902. The pressing directions of the first and second buttons 901, 902 and the protrusion 9021 together constitute the anti-simultaneous triggering structure. The principle is as follows: when the first button 901 is pressed, it will synchronously drive the protrusion 9021 to move synchronously, and the protrusion 9012 will then drive the second button 902 to rotate synchronously in the direction opposite to the triggering direction of the flexible circuit board 608, so that when the first button 901 is pressed to trigger the flexible circuit board 608, the second button 902 cannot simultaneously trigger the flexible circuit board 608, thereby achieving the purpose of preventing the first and second buttons 901, 902 from simultaneously triggering the flexible circuit board 608.

[0056] The monopolar electrosurgical unit includes a monopolar cannula 8 and an electric hook 801 fixed at the distal end of the monopolar cannula 8. The proximal end of the monopolar cannula 8 has a connecting ring 802, and the distal bottom of the transmission rack 405 has a snap-in groove 407. The snap-in groove 407 is snap-fitted with the connecting ring 802 to drive the monopolar cannula 8 to move axially. The monopolar cannula 8 is sleeved with a contact ring piece 607 fixed in the shell 1. The contact ring piece 607 is electrically connected to the circuit board 6 through a single-click electrosurgical connection harness 602. Specifically, the monopolar cannula 8 is a metal structure with a fixed connection protrusion (not shown) on its exterior that mates with the contact ring 607. The connection protrusion moves synchronously with the monopolar cannula 8 until it abuts the contact ring 607, establishing a path. Simultaneously, the terminal 606 of the monopolar electrosurgical signal line 605 connects with the electrical contact element 603, generating a power-on signal to energize the monopolar electrosurgical assembly. This signal is then transmitted to a control host (not shown), which then energizes the monopolar cannula 8, enabling the electric hook 801 to perform a cutting function. The electric hook 801 is available in various models, and its length and shape are configured according to specific needs.

[0057] An axially extending slot 803 is provided on the proximal outer wall of the monopolar sleeve 8 to avoid the connection between the inner sleeve 702 and the driving arm 705 .

[0058] The monopolar cannula 8 and the outer cannula 703 are both fixedly connected to the knob 9, and the knob 9 is provided at the distal end of the housing 1 to drive the monopolar cannula 8 and the outer cannula 702 to rotate. In addition, the conventional structure is already available and will not be described in detail here.

[0059] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0060] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel, comprising a housing (1) and a scalpel rod assembly, wherein the scalpel rod assembly is composed of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, wherein a trigger (2) and a control button group are provided on the housing (1), and the scalpel rod assembly is located at the distal end of the housing (1), and is characterized in that: The housing (1) has a built-in control mechanism capable of switching between the ultrasonic knife assembly and the monopolar electric knife assembly. The control mechanism comprises a driving gear shaft (3), a transmission assembly, and a signal circuit. The driving gear shaft (3) drives the monopolar electric knife assembly to move axially via the transmission assembly. The signal circuit comprises a circuit board (6) connected to a power supply and two ultrasonic knife signal lines (604) and a monopolar electric knife signal line (605) respectively connected to the circuit board (6), and the ends of the two ultrasonic knife signal lines (604) and the monopolar electric knife signal line (605) are respectively fixedly connected to wiring terminals (606); an electric contact element (603) for connecting the two wiring terminals (606) is fixedly provided on the outer peripheral surface of the driving gear shaft (3); The driving gear shaft (3) switches between a first state and a second state by reciprocating rotation. In the first state, the driving gear shaft (3) is located at a first limit position. At this time, the distal end of the ultrasonic knife assembly protrudes from the monopolar electric knife assembly. The connection terminal (606) of the ultrasonic knife signal line (604) is connected to the electric contact element (603), so that the circuit board (6) controls the power supply to supply power to the ultrasonic knife assembly. The trigger (2) and the control button group can control the operation of the ultrasonic knife assembly. In the second state, the driving gear shaft (3) is located at the second limit position, at which time the driving gear shaft (3) drives the monopolar electric knife assembly to move axially to the farthest end of its stroke, the far end of the monopolar electric knife assembly protrudes outward from the ultrasonic knife assembly, and at the same time, the terminal (606) of the monopolar electric knife signal line (605) is connected to the electric contact element (603), so that the circuit board (6) controls the power supply to supply power to the monopolar electric knife assembly to control the operation of the monopolar electric knife assembly; The transmission assembly is a gearbox (4), and the gearbox (4) includes a connecting gear, a transmission gear and a transmission rack (405). The connecting gear includes a coaxially stacked connecting inner ring gear (403) and a connecting outer ring gear (404). The transmission gear includes a coaxially stacked transmission inner ring gear (409) and a transmission outer ring gear (410). The transmission rack (405) extends axially relative to the housing (1), and its distal end is fixedly connected to the proximal end of the monopolar electrosurgical unit. The drive gear shaft (3) A driving gear (301) is fixedly provided on the upper eccentric, and the driving gear (301) and the connecting inner ring gear (403), the connecting outer ring gear (404) and the transmission inner ring gear (409), and the transmission outer ring gear (410) and the transmission rack (405) are meshed, so that the driving gear shaft (3) drives the monopolar electric knife assembly to move axially by rotating, and the driving gear (301), the connecting inner ring gear (403), the connecting outer ring gear (404) are meshed. ) are all fan-shaped, and the inner wall of the top box body of the gear box (4) is concave to form a limiting recess (402). When in the first state, the top of the driving gear (301) is clamped in the limiting recess (402), which is the first limit position of the driving gear shaft (3). The bottom of the driving gear (301) has a convex portion (304), and the far end of the gear box (4) is provided with an axially extending slide groove (406), and a limiting lock block is slidably provided in the slide groove (406). (305), a spring (306) is abutted between the distal end of the limiting lock block (305) and the slide groove (406), the proximal end of the limiting lock block (305) is in sliding abutment with the outer edge of the driving gear (301), and a limiting bayonet (3051) matching the protrusion (304) is provided at the top of the proximal end. In the second state, the protrusion (304) is clamped in the limiting bayonet (3051), which is the second limit position of the driving gear shaft (3).

2. The surgical instrument integrating an ultrasonic scalpel and a monopolar electrosurgery unit according to claim 1, characterized in that: The driving gear shaft (3) is radially inserted into the through hole (401) on the gear box (4), and both ends of the driving gear shaft (3) protrude from the housing (1). Both ends of the driving gear shaft (3) are fixedly connected with a driving knob (302) for driving the driving gear shaft to rotate. A torsion spring (303) for driving the driving gear shaft to reset is sleeved on the driving gear shaft (3). A group of the wiring terminals (606) are fixedly arranged on the inner wall of the through hole (401).

3. The surgical instrument integrating an ultrasonic scalpel and a monopolar electrosurgery unit according to claim 2, characterized in that: The side of the limit lock block (305) is connected to a release mechanism for driving it to reset. The release mechanism includes a loosening button (5), a first connecting shaft (501), a first connecting rod (502), a second connecting rod (503) and a second connecting shaft (504) connected in sequence. The first connecting shaft (501) is radially penetrated into the shell (1), and its two ends protrude from the shell (1) and are respectively fixed with a loosening button (5). The cross section of the connection between the first connecting shaft (501) and the first connecting rod (502) is non-circular, so as to drive the first connecting rod (502) to rotate synchronously. The second connecting shaft (504) is pivotally arranged on the side of the limit lock block (305) and moves axially synchronously with the rotation of the first connecting rod (502), so that the protrusion (304) slides out along the guide inclined surface (3052) of the limit bayonet (3051).

4. A surgical instrument integrating an ultrasonic scalpel and a monopolar electric scalpel, comprising a housing (1), a knife rod assembly consisting of an ultrasonic scalpel assembly and a monopolar electric scalpel assembly, and a trigger (2) and a control button group arranged on the housing (1), wherein the knife rod assembly is located at the distal end of the housing (1), and is characterized in that: The housing (1) has a built-in control mechanism capable of switching between the ultrasonic scalpel assembly and the monopolar electric scalpel assembly. The control mechanism comprises at least a driving gear shaft (3) and a signal circuit. The driving gear shaft (3) generates reciprocating rotation between a first limit position and a second limit position. Only when the driving gear shaft (3) is at the first limit position, the distal end of the ultrasonic scalpel assembly protrudes from the monopolar electric scalpel assembly and the ultrasonic scalpel assembly is controlled to be in an energized state through the signal circuit; and only when the driving gear shaft (3) is at the second limit position, the monopolar electric scalpel assembly moves axially to the farthest end of its travel, protrudes from the farthest end of the ultrasonic scalpel assembly and the monopolar electric scalpel assembly is controlled to be in an energized state through the signal circuit. The control mechanism drives the monopolar electric knife assembly to move axially through a set of transmission components, the transmission component includes a gear box (4) and a connecting gear, a transmission gear and a transmission rack (405) arranged therein, the connecting gear includes a coaxially stacked connecting inner ring gear (403) and a connecting outer ring gear (404), the transmission gear includes a coaxially stacked transmission inner ring gear (409) and a transmission outer ring gear (410), the transmission rack (405) extends axially relative to the housing (1), and its distal end is fixedly connected to the proximal end of the monopolar electric knife assembly, a driving gear (301) is eccentrically fixed on the driving gear shaft (3), the driving gear (301) and The connecting inner ring gear (403), the connecting outer ring gear (404) and the transmission inner ring gear (409), and the transmission outer ring gear (410) and the transmission rack (405) are meshed so that the driving gear shaft (3) drives the monopolar electric knife assembly to move axially by rotation; the driving gear (301), the connecting inner ring gear (403), and the connecting outer ring gear (404) are all fan-shaped, and the inner wall of the top box body of the gear box (4) is concave to form a limiting recess (402). In the first state, the top of the driving gear (301) is clamped in the limiting recess (402), which is the first limit position of the driving gear shaft (3); the driving gear (301) is in the inner wall of the top box body of the gear box (4). The bottom of the gear (301) has a convex portion (304), the distal end of the gear box (4) is provided with an axially extending slide groove (406), a limit lock block (305) is slidably provided in the slide groove (406), a spring (306) is abutted between the distal end of the limit lock block (305) and the slide groove (406), the proximal end of the limit lock block (305) is in sliding abutment with the outer edge of the driving gear (301), and a limit bayonet (3051) matching the convex portion (304) is provided at the top of the proximal end. In the second state, the convex portion (304) is clamped in the limit bayonet (3051), which is the second limit position of the driving gear shaft (3).

5. The surgical instrument integrating an ultrasonic scalpel and a monopolar electrosurgery unit according to claim 4, characterized in that: The side of the limit lock block (305) is connected to a release mechanism for driving it to reset. The release mechanism includes a loosening button (5), a first connecting shaft (501), a first connecting rod (502), a second connecting rod (503) and a second connecting shaft (504) connected in sequence. The first connecting shaft (501) is radially penetrated into the shell (1), and its two ends protrude from the shell (1) and are respectively fixed with a loosening button (5). The cross section of the connection between the first connecting shaft (501) and the first connecting rod (502) is non-circular, so as to drive the first connecting rod (502) to rotate synchronously. The second connecting shaft (504) is pivotally arranged on the side of the limit lock block (305) and moves axially synchronously with the rotation of the first connecting rod (502), so that the protrusion (304) slides out along the guide inclined surface (3052) of the limit bayonet (3051).

6. The surgical instrument integrating an ultrasonic scalpel and a monopolar electrosurgery unit according to claim 4 or 5, characterized in that: The signal circuit comprises a circuit board (6) connected to a power supply and an ultrasonic knife signal line (604) and a monopolar electric knife signal line (605) respectively connected to the circuit board (6); the ends of the two ultrasonic knife signal lines (604) and the monopolar electric knife signal line (605) are respectively fixedly connected to wiring terminals (606); and an electric contact element (603) connected to the two wiring terminals (606) is fixedly provided on the outer peripheral surface of the driving gear shaft (3); When the driving gear shaft (3) is located at the first limit position, the ultrasonic knife signal line (604) is connected to the electric contact element (603), and at this time the circuit board (6) controls the power supply to supply power to the ultrasonic knife assembly, and the trigger (2) and the control button group can control the operation of the ultrasonic knife assembly; When the driving gear shaft (3) is located at the second limit position, the monopolar electrosurgical knife signal line (605) is connected to the electric contact element (603), and at this time, the circuit board (6) controls the power supply to supply power to the monopolar electrosurgical knife assembly to control the operation of the monopolar electrosurgical knife assembly.

Images