Tissue ablation, cutting and fusion systems

Abstract

The tissue ablation, cutting and fusion system of the present invention includes a handle assembly, a shaft assembly, a working part, a circuit system and a power supply. The circuit system is provided with an elastic electrical interface device, and the elastic electrical interface device includes a conductive joint, an elastic conductive mechanism and an electrical interface. The conductive joint includes a rotor and a stator. When the shaft rotates, the rotor can rotate synchronously, and the circuit connecting the conductive joint and the rear end of the shaft remains synchronized, which can avoid the wire breakage or the loosening of the solder joint caused by the distortion of the circuit. The elastic conductive mechanism is a conductive mechanism that can undergo elastic deformation under the action of external force while maintaining the circuit unobstructed. When the shaft translates, the elastic conductive mechanism undergoes elastic deformation and performs reciprocating motion, which overcomes the fatigue breakage or the loosening of the solder joint caused by the constant expansion and contraction of the wire during the current wire connection. The tissue ablation, cutting and fusion system of the present invention not only maintains the good controllability of the instrument, but also improves the reliability of the circuit.

Description

Technical Field

[0001] The present invention relates to an electrosurgical instrument, in particular to a surgical instrument used for tissue ablation, cutting and fusion in surgical operations. Background Art

[0002] In surgical operations, tissue ablation, cutting and fusion are very important tissue processing processes. Among the commonly used tissue ablation, cutting and fusion technologies, the electric heating tissue ablation method is one of the important technologies. By heating the tissue, protein modification occurs, thereby achieving tissue ablation, cutting and fusion processes.

[0003] In the current electric heating tissue ablation method, the shaft has multiple movements, such as closing and opening the working surface through translational movement of the shaft, and rotating movement of the shaft to achieve rotational movement of the working surface. During these movements, the circuit system in the system also needs to undergo translational reciprocating and rotational movements to ensure the connection of the circuit system. These frequent movements have a great impact on the circuit interface, and it is very easy to cause fatigue fracture of the wiring point due to reciprocating motion, causing the circuit wiring point to fall off, causing the instrument to lose power, thereby interrupting the surgical process, posing a safety hazard in clinical use.

[0004] Therefore, there is a need to improve the tissue ablation, cutting and fusion systems in the prior art, and in particular, there is a need to further improve the circuit systems thereof. Summary of the invention

[0005] The tissue ablation, cutting and fusion system of the present invention is designed with an elastic electrical interface. When the shaft rotates, the rotor of the conductive joint and the shaft can rotate synchronously, and the wires connecting the conductive joint and the rear end of the shaft remain synchronized, which can avoid wire breakage or loosening of solder joints caused by twisting of the wires. When the inner rod translates and reciprocates, the elastic conductive mechanism undergoes elastic deformation and performs reciprocating motion, thus overcoming fatigue breakage or loosening of solder joints caused by the constant expansion and contraction of the wires when the wires are connected. The tissue ablation, cutting and fusion system of the present invention not only maintains good controllability of the instrument, but also improves the reliability of the circuit.

[0006] The tissue ablation, cutting and fusion system of the present invention is characterized by:

[0007] A. The tissue ablation, cutting and fusion system 900 includes a handle assembly 100, an axis assembly 200, a working part 300, a circuit system 400 and a power supply 500:

[0008] B. The handle assembly 100 includes a trigger assembly 11, a gear adjustment button 12, an axis connection mechanism 13 and a housing 14; the trigger assembly 11, the gear adjustment button 12 and the axis connection mechanism 13 are arranged on the housing 14;

[0009] C. The shaft assembly 200 includes a shaft rod 21 and a connecting assembly 22;

[0010] D. The working part 300 comprises at least two working surfaces 31, and at least one of the working surfaces 31 is provided with an electric heating device 32;

[0011] E. The circuit system 400 includes a circuit 41, a controller 42 and an elastic electrical interface device 43; the circuit system 400 is connected to the power source 500 via the elastic electrical interface device 43;

[0012] F. The proximal end of the shaft assembly 200 is connected to the handle assembly 100 via the shaft connection mechanism 13; the distal end of the shaft assembly 200 is connected to the working part 300; and the electric heating device 32 is connected to the power source 500 via the circuit system 400.

[0013] The circuit system 400 of the tissue ablation, cutting and fusion system of the present invention is designed with a special elastic electrical interface device 43, which will be elastically deformed under the action of external force, perform reciprocating motion, and at the same time maintain good electrical transmission capacity, especially the transmission capacity of large currents, such as 5A-10A, overcoming the shortcomings of fatigue fracture or loose solder joints or heating of joints caused by the continuous expansion and contraction of wires during current wire connection. The tissue ablation, cutting and fusion system of the present invention not only maintains good controllability of the instrument, but also improves the reliability of the circuit.

[0014] The handle assembly 100 also includes a fixing mechanism 15; the trigger assembly 11 is fixedly mounted on the housing (14) through the fixing mechanism 15. During assembly, the trigger assembly 11 can be embedded or fixed in the mounting groove of the fixing mechanism 5, and then fixed to the housing 14 after being assembled into a whole, so that the assembly process is simpler and the fixing is more reliable.

[0015] The trigger assembly 11 includes a trigger 11-1, a rocker arm 11-2 and a slider 11-3; the trigger 11-1 is provided with a trigger shaft 11-1-1 and a rocker arm drive shaft 11-1-2; the rocker arm 11-2 includes a rocker arm fulcrum 11-2-1, a motion slide groove 11-2-2 and a push block slot 11-2-3; the slider 11-3 includes a motion push block 11-3-1, a sliding convex step 11-3-2 and a working boss 11-3-3; the trigger shaft 11-1-1 and the fixing mechanism 15 are connected together and fixed on the housing 14; one end of the rocker arm drive shaft 11-1-2 is connected to the trigger 11-1, and the other end is embedded in the motion slide groove 11-2-2; the rocker arm fulcrum 11-2-1 and the fixing mechanism 15 are connected together to movably mount the rocker arm 11-2 In the shell 14; the moving push block 11-3-1 is embedded in the push block slot 11-2-3, and the sliding convex step 11-3-2 is embedded in the positioning slot 15-1 of the fixing mechanism 15, and is connected to the fixing mechanism 15; the trigger 11-1 is pulled, and the trigger 11-1 rotates around the trigger shaft 11-1-1, driving the rocker drive shaft 11-1-2 to reciprocate along the moving slot 11-2-2, thereby pushing the rocker arm 11-2 to swing back and forth around the rocker arm fulcrum 11-2-1; the reciprocating swing of the rocker arm 11-2 pushes the moving push block 11-3-1 embedded in the push block slot 11-2-3, thereby driving the slider to move back and forth in a straight line along the positioning slot 15-1, thereby realizing the closing and opening of the working surface 31 of the working part 300.

[0016] The gear adjustment button 12 is connected to the controller 42 via the line 41. The doctor can select different output powers through the gear adjustment button 12 according to the specific conditions of the surgical process, which makes clinical operation more convenient.

[0017] The gear adjustment button 12 includes a cutting gear 12-1 and a fusion gear 12-2; the cutting gear 12-1 and the fusion gear 12-2 are linked together by a lever mechanism 12-3, so that the cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time. The cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time, which can ensure that there will be no misoperation during clinical use.

[0018] The handle assembly 100 also includes a reset mechanism 16. When the trigger 11-1 is released, the reset mechanism 16 can automatically reset the trigger 11-1 through the reset force, greatly improving the safety, convenience and comfort of the use process. The reset mechanism 16 can be a torsion spring mechanism, a spring mechanism, an elastomer mechanism and other forms. Those skilled in the art can design various reset mechanisms as needed, and install one or more reset mechanisms 16 at different parts of the instrument as needed, which does not deviate from the protection scope of this application.

[0019] The handle assembly 100 also includes a force-limiting mechanism 17. The force-limiting mechanism 17 can limit the working pressure transmitted to the working part 300 through the trigger assembly 11. When the force-limiting mechanism 17 takes effect, the maximum working pressure applied to the working part 300 after the operator pulls the trigger 11-1 is constant. Usually, during the ablation, cutting and fusion of soft tissues, the maximum working pressure can be limited to less than 100N. By adjusting or selecting different force-limiting mechanisms 17, the size of the clamping force of the working part 300 on the clamped tissue during surgery can be set. Of course, those skilled in the art can set the limit value of the maximum working pressure limited by the force-limiting mechanism 17 as needed, which does not deviate from the protection scope of this application. The force-limiting mechanism 17 can be a spring force-limiting mechanism, an elastomer force-limiting mechanism, a compression spring force-limiting mechanism and other various forms of structures. Those skilled in the art can also design other various forms of force-limiting mechanisms, which do not deviate from the protection scope of this application.

[0020] The shaft assembly 200 further includes a knob 23 ; the knob 23 can drive the shaft 21 to rotate.

[0021] The shaft 21 includes an inner rod 21-1 and an outer rod 21-2; the working surface 31 is respectively connected to the distal ends of the inner rod 21-1 and the outer rod 21-2; when the inner rod 21-1 moves toward the proximal end, the working surface 31 is closed; when the inner rod 21-1 moves toward the distal end, the working surface 31 is opened; rotating the knob 23 can drive the inner rod 21-1 and the outer rod 21-2 to rotate, thereby driving the working surface 31 to rotate.

[0022] During clinical use, the working surface 31 often needs to be rotated to a suitable position according to the different parts of the tissue to be treated. The knob 23 can drive the shaft 21 to move, thereby driving the working surface 31 to rotate to a suitable direction and position.

[0023] The elastic electrical interface device 43 includes a conductive connector 43-1, an elastic conductive mechanism 43-2 and an electrical interface 43-3; one end of the conductive connector 43-1 is connected to the electric heating device 32 via the line 41, and the other end is connected to the elastic conductive mechanism 43-2; the other end of the elastic conductive mechanism 43-2 is connected to the electrical interface 43-3, and the electrical interface 43-3 is connected to the power supply 500.

[0024] The conductive joint 43-1 includes a rotor 43-1-1 and a stator 43-1-2; the rotor 43-1-1 can rotate; the distal end of the rotor 43-1-1 is connected to the proximal end of the shaft 21, and when the shaft 21 rotates, the rotor 43-1-1 can rotate synchronously; the proximal end of the stator 43-1-2 is connected to the distal end of the elastic conductive mechanism 43-2.

[0025] Since the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the rotor 43-1-1 and the shaft 21 also rotates synchronously, and the line 41 connecting the conductive connector 43-1 and the rear end of the shaft 21 remain synchronized, thereby avoiding wire breakage or loosening of solder joints caused by twisting of the line 41.

[0026] The conductive joint 43 - 1 is a brush 43 - 11 . The applicant only lists the brush as a conductive joint form, and those skilled in the art can design other conductive joint forms as needed without departing from the protection scope of the present application.

[0027] The elastic conductive mechanism 43-2 is a conductive mechanism that can be elastically deformed under the action of external force while maintaining the circuit unobstructed. The elastic conductive mechanism 43-2 can be elastically deformed under the action of external force. Therefore, when the shaft 21 translates toward the proximal end, the shaft 21 applies pressure to the elastic conductive mechanism 43-2, and the elastic conductive mechanism 43-2 is compressed and deformed. When the shaft translates toward the distal end, the pressure applied by the shaft 21 to the elastic conductive mechanism 43-2 is gradually released. Under the action of the elastic restoring force, the connection state between the conductive connector 43-1 and the shaft 21 can be continuously maintained, and the stable power supply of the circuit system 400 can be maintained. In this movement cycle, the elastic conductive mechanism 43-2 is elastically deformed and reciprocates, which overcomes the fatigue fracture or loose solder joint or heating of the connector caused by the continuous expansion and contraction of the wires during the current wire connection. Not only does it maintain good controllability of the instrument, but it also improves the reliability of the circuit.

[0028] The elastic conductive mechanism 43-2 is a spring structure. The spring mechanism can be a coil spring mechanism, a tower spring mechanism, a compression spring mechanism, or other spring mechanisms, which the applicant does not list here. Those skilled in the art can also design the elastic conductive mechanism 43-2 into other elastic structures such as an elastomer structure as needed, which does not deviate from the protection scope of the present invention.

[0029] The power source 500 is a battery 51, or a battery pack 52, or a host 53. The battery 51 or the battery pack 52 is small in size and light in weight, suitable for carrying outside, has low requirements for the power environment, and low-voltage power supply is safer, while the host 53 can provide stable power supply for a long time, especially suitable for large-scale operations with long operation time; users can choose different power sources 500 according to different use environments and use requirements.

[0030] The tissue ablation, cutting and fusion system 900 also includes a prompt system 600. The prompt system 600 can prompt the operator of the use status of the instrument as needed, such as using different sounds to prompt different working states, using different lights to prompt the power status, and using different patterns to prompt different working parts.

[0031] The prompt system 600 is a sound prompt device 61, or a light prompt device 62, or an image prompt device 63. The applicant only lists the above three prompt devices, and those skilled in the art can design different prompt system structures as needed without departing from the protection scope of this application.

[0032] The tissue ablation, cutting and fusion system 900 also includes a smoke exhaust system 700; the smoke exhaust system 700 includes a smoke outlet 71, a smoke exhaust pipe 72 and a smoke inlet 73. The smoke outlet 71 of the smoke exhaust system 700 can be connected to a medical negative pressure source to timely extract the smoke generated during the operation out of the body, thereby ensuring a clear surgical field of view and making the surgical process safer and more reliable.

[0033] The tissue ablation, cutting and fusion system 900 also includes a water supply / drainage system 800; the water supply / drainage system 800 includes a water outlet 81, a drain pipe 82 and a water inlet 83. The drain pipe 82 of the water supply / drainage system 800 can be either a drain pipe or a water supply pipe. During the operation, the doctor can inject physiological saline or other solvents into the surgical site through the water supply / drainage system 800 according to the needs of the operation, and can also use the water supply / drainage system 800 to promptly discharge blood or sewage from the surgical site to ensure the smooth progress of the operation.

[0034] During clinical use, the power supply 500 is connected to the circuit system 400 through the electrical interface 43-3, the power switch is turned on, the trigger 11-1 is pulled, the inner rod 21-1 is driven to move proximally, the working surface 31 is closed, and the working part 300 clamps the tissue to be treated. According to the surgical situation, the cutting gear 12-1 or the fusion gear 12-2 of the gear adjustment button 12 is pressed, and the gear adjustment button 12 is connected to the controller 42. The circuit system 400 connects the power supply 500 and the electric heating device 32, and the electric heating device 32 starts to generate heat to ablate, cut or fuse the tissue. During this process, the elastic conductive mechanism 43-2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply to the circuit system 400. After the operation is completed, the trigger 11-1 is released, and the trigger 11-1 is reset under the action of the reset mechanism 16, and the inner rod 21-1 moves to the distal end, and the working surface 32 is opened, completing a tissue treatment process. At this time, the external force on the elastic conductive mechanism 43-2 is gradually eliminated, and under the action of the elastic restoring force, the connection state between the conductive joint 43-1 and the shaft 21 is maintained, and the stable power supply of the circuit system 400 is still maintained. When the working surface 32 needs to be rotated, it is only necessary to rotate the knob 23, and the knob 23 drives the shaft 21 to rotate, and the working surface 32 connected to the shaft 21 rotates accordingly. During the rotation process, because the rotor 43-1-1 can rotate synchronously with the shaft 21, the connection between the conductive joint 43-1 and the rear end of the shaft 21 is kept synchronous, which can avoid the wire breakage or loosening of the solder joint or heating of the joint caused by the distortion of the circuit 41. , thereby ensuring the stable power supply of the circuit system 400. Different tissue parts are selected in turn, and the trigger 11-1 is repeatedly pulled and released to complete the surgical operation. The surgical operation is very simple.

[0035] The tissue ablation, cutting and fusion system of the present invention comprises a handle assembly 100, an axis assembly 200, a working part 300, a circuit system 400 and a power source 500. The circuit system 400 is provided with an elastic electrical interface device 43; the circuit system 400 is connected to the power source 500 through the elastic electrical interface device 43. The electric heating device 32 provided on the working part 300 is connected to the power source 500 through the circuit system 400. The elastic electrical interface device 43 comprises a conductive joint 43-1, an elastic conductive mechanism 43-2 and an electrical interface 43-3. The conductive joint 43-1 comprises a rotor 43-1-1 and a stator 43-1-2. When the shaft 21 of the axis assembly 200 rotates, the rotor 43-1-1 can rotate synchronously, and the circuit 41 connecting the conductive joint 43-1 and the rear end of the shaft 21 is kept synchronous, which can avoid the wire breakage, loosening of the solder joint or heating of the joint caused by the twisting of the circuit 41. . The elastic conductive mechanism 43-2 is a conductive mechanism that can be elastically deformed under the action of external force while maintaining the circuit unobstructed. When the shaft 21 translates, the elastic conductive mechanism 43-2 is elastically deformed and reciprocates, overcoming the fatigue fracture or solder joint loosening or joint heating caused by the constant expansion and contraction of the wires during the current wire connection. The tissue ablation, cutting and fusion system of the present invention not only maintains good controllability of the instrument, but also improves the reliability of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional structural schematic diagram of the tissue ablation, cutting and fusion system of the present invention when the working surface is opened.

[0037] Figure 1-1 yes Figure 1 Schematic diagram of the three-dimensional structure when the working surface is closed.

[0038] Figure 2 yes Figure 1 main view.

[0039] Figure 2-1 yes Figure 2 AA section view.

[0040] Figure 2-2 yes Figure 2-1 Enlarged view of point B.

[0041] Figure 3 yes Figure 1-1 main view.

[0042] Figure 3-1 yes Figure 3 CC cross-sectional view.

[0043] Figure 4It is a schematic structural diagram of the trigger assembly of the tissue ablation, cutting and fusion system of the present invention.

[0044] Figure 5 It is a schematic diagram of the structure of the shaft assembly of the tissue ablation, cutting and fusion system of the present invention.

[0045] Figure 5-1 yes Figure 5 DD cross-sectional view.

[0046] Figure 6 It is a three-dimensional structural schematic diagram of the tissue ablation, cutting and fusion system of the present invention including a water supply / drainage system.

[0047] Figure 6-1 yes Figure 6 Enlarged view of point E.

[0048] Figure 7 It is a three-dimensional structural schematic diagram of the tissue ablation, cutting and fusion system of the present invention including the clamping forceps.

[0049] Figure 7-1 yes Figure 7 Enlarged view of point F.

[0050] Figure 8 It is a three-dimensional structural schematic diagram of the tissue ablation, cutting and fusion system of the present invention with a battery and a battery pack.

[0051] Fig. 9 It is a three-dimensional structural schematic diagram of the tissue ablation, cutting and fusion system of the present invention with a host.

[0052] In the above figure:

[0053] 100 is a handle assembly, 200 is an axis assembly, 300 is a working part, 400 is a circuit system, 500 is a power source, 600 is a prompt system, 700 is a smoke exhaust system, 800 is a water supply / drainage system, and 900 is the tissue ablation, cutting and fusion system of the present invention.

[0054] On the handle assembly:

[0055] 11 is a trigger assembly, 12 is a gear adjustment button, 13 is an axis connection mechanism, 14 is a housing, 15 is a fixing mechanism, 16 is a reset mechanism, and 17 is a force limiting mechanism.

[0056] 11-1 is the trigger, 11-2 is the rocker arm, 11-3 is the slider; 11-1-1 is the trigger shaft, 11-1-2 is the rocker arm drive shaft, 11-2-1 is the rocker arm fulcrum, 11-2-2 is the motion slide groove, 11-2-3 is the push block slot, 11-3-1 is the motion push block, 11-3-2 is the sliding convex step, and 11-3-3 is the working boss.

[0057] 12-1 is the cutting gear, 12-2 is the fusion gear, and 12-3 is the lever mechanism.

[0058] 15-1 is a positioning slide.

[0059] 17-1 is a spring force limiting mechanism.

[0060] On the shaft assembly:

[0061] 21 is a shaft rod, 22 is a connecting assembly, and 23 is a knob.

[0062] 21-1 is the inner rod, and 21-2 is the outer rod.

[0063] Work Department:

[0064] 31 is a working surface, 32 is an electric heating device, 33 is a rotating shaft; 31-1 is a distal working surface, 31-2 is a proximal working surface; 301 is a first working part, 302 is a second working part.

[0065] Circuit system:

[0066] 41 is a circuit, 42 is a controller, 43 is an elastic electrical interface device, and 44 is an insulating layer.

[0067] 41-1 is a conductive core rod, 43-1 is a conductive joint, 43-2 is an elastic conductive mechanism, 43-3 is an electrical interface; 43-1-1 is a rotor, 43-1-2 is a stator; brush 43-11.

[0068] On the power supply:

[0069] 51 is a battery, 52 is a battery pack, and 53 is a host.

[0070] On the prompt system:

[0071] 61 is a sound prompt device, 62 is a light prompt device, and 63 is an image prompt device.

[0072] On the smoke exhaust system:

[0073] 71 is the smoke outlet, 72 is the smoke exhaust pipe, and 73 is the smoke inlet.

[0074] On water supply / drainage system:

[0075] 81 is the water outlet, 82 is the drain pipe, and 83 is the water inlet. DETAILED DESCRIPTION

[0076] Example: Tissue ablation, cutting and fusion system of the present invention

[0077] refer to Figure 1 to Figure 6-1The tissue ablation, cutting and fusion system 900 of this embodiment includes a handle assembly 100 , an axis assembly 200 , a working portion 300 , a circuit system 400 , a power supply 500 , a prompt system 600 and a smoke exhaust system 700 .

[0078] The handle assembly 100 comprises a trigger assembly 11, a gear adjustment button 12, an axis connection mechanism 13 and a housing 14, a fixing mechanism 15, a reset mechanism 16 and a force limiting mechanism 17. The trigger assembly 11 is fixedly mounted on the housing (14) through the fixing mechanism 15, and the gear adjustment button 12 and the axis connection mechanism 13 are arranged on the housing 14.

[0079] The shaft assembly 200 includes a shaft rod 21 , a connecting assembly 22 and a knob 23 .

[0080] The working part 300 includes two working surfaces 31 , and an electric heating device 32 is disposed on one of the working surfaces 31 .

[0081] The circuit system 400 includes a circuit 41, a controller 42 and an elastic electrical interface device 43. The circuit system 400 is connected to the power source 500 via the elastic electrical interface device 43.

[0082] The proximal end of the shaft assembly 200 is connected to the handle assembly 100 via the shaft connection mechanism 13 ; the distal end of the shaft assembly 200 is connected to the working part 300 ; and the electric heating device 32 is connected to the power source 500 via the circuit system 400 .

[0083] refer to Figure 3The trigger assembly 11 includes a trigger 11-1, a rocker arm 11-2 and a slider 11-3; the trigger 11-1 is provided with a trigger shaft 11-1-1 and a rocker arm drive shaft 11-1-2; the rocker arm 11-2 includes a rocker arm fulcrum 11-2-1, a motion slide groove 11-2-2 and a push block slot 11-2-3; the slider 11-3 includes a motion push block 11-3-1, a sliding convex step 11-3-2 and a working boss 11-3-3; the trigger shaft 11-1-1 and the fixing mechanism 15 are connected together and fixed on the housing 14; one end of the rocker arm drive shaft 11-1-2 is connected to the trigger 11-1, and the other end is embedded in the motion slide groove 11-2-2; the rocker arm fulcrum 11-2-1 and the fixing mechanism 15 are connected together to movably mount the rocker arm 11-2 Installed in the shell 14; the moving push block 11-3-1 is embedded in the push block slot 11-2-3, and the sliding convex step 11-3-2 is embedded in the positioning slot 15-1 of the fixing mechanism 15, and is connected to the fixing mechanism 15; the trigger 11-1 is pulled, and the trigger 11-1 rotates around the trigger shaft 11-1-1, driving the rocker drive shaft 11-1-2 to reciprocate along the moving slot 11-2-2, thereby pushing the rocker arm 11-2 to swing back and forth around the rocker arm fulcrum 11-2-1; the reciprocating swing of the rocker arm 11-2 pushes the moving push block 11-3-1 embedded in the push block slot 11-2-3, thereby driving the slider to move back and forth in a straight line along the positioning slot 15-1, thereby realizing the closing and opening of the working surface 31 of the working part 300.

[0084] The gear adjustment button 12 is connected to the controller 42 via the line 41. The doctor can select different output powers through the gear adjustment button 12 according to the specific conditions of the surgical process, which makes clinical operation more convenient.

[0085] In this embodiment, the gear adjustment button 12 includes a cutting gear 12-1 and a fusion gear 12-2; the cutting gear 12-1 and the fusion gear 12-2 are linked together by a lever mechanism 12-3, so that the cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time. The cutting gear 12-1 and the fusion gear 12-2 cannot be pressed at the same time, which can ensure that there will be no misoperation during clinical use.

[0086] In this embodiment, the handle assembly 100 includes a reset mechanism 16. In this embodiment, the reset mechanism 16 is a combination of a torsion spring mechanism 16-1 and a spring mechanism 16-2. The torsion spring mechanism 16-1 is arranged at the trigger shaft 11-1-1, and the spring mechanism 16-2 is arranged at the proximal end of the positioning slot 15-1 of the fixing mechanism 15. When the trigger 11-1 is pulled, the torsion spring mechanism 16-1 is compressed, the inner rod 21-1 moves toward the proximal end, and the spring mechanism 16-2 is compressed and deformed. When the trigger 11-1 is released, under the action of the torsion spring mechanism 16-1 and the spring mechanism 16-2, the inner rod 21-1 moves toward the distal end, and the trigger 11-1 is automatically reset.

[0087] Those skilled in the art may also design various reset mechanisms as needed, and install one or more reset mechanisms 16 at different locations of the instrument as needed, without departing from the protection scope of the present application.

[0088] In this embodiment, the handle assembly 100 includes a force limiting mechanism 17. The force limiting mechanism 17 can limit the working pressure transmitted to the working part 300 through the trigger assembly 11. When the force limiting mechanism 17 takes effect, the maximum working pressure applied to the working part 300 after the operator pulls the trigger 11-1 is constant. Generally, during the ablation, cutting and fusion of soft tissues, the maximum working pressure can be limited to less than 80N. Of course, those skilled in the art can set the limit value of the maximum working pressure defined by the force limiting mechanism 17 as needed, which does not deviate from the protection scope of this application.

[0089] In this embodiment, the force limiting mechanism 17 is a spring force limiting mechanism 17-1, and the spring force limiting mechanism 17-1 is arranged at the proximal end of the working boss 11-3-3 of the slider 11-3. When the inner rod 21-1 moves toward the proximal end, the working boss 11-3-3 presses the spring force limiting mechanism 17-1, and the spring force limiting mechanism 17-1 undergoes elastic deformation, thereby achieving the effect of limiting the working pressure.

[0090] Those skilled in the art may also design various other forms of force limiting mechanisms such as an elastic force limiting mechanism or a compression spring force limiting mechanism, which do not depart from the protection scope of the present application.

[0091] During clinical use, the working surface 31 often needs to be rotated to a suitable position according to the different parts of the tissue to be treated. Therefore, in this embodiment, the shaft assembly 200 includes a knob 23, and the knob 23 can drive the shaft 21 to rotate.

[0092] The shaft 21 includes an inner rod 21-1 and an outer rod 21-2; the working surface 31 is connected to the distal ends of the inner rod 21-1 and the outer rod 21-2 respectively; when the inner rod 21-1 moves toward the proximal end, the working surface 31 is closed; when the inner rod 21-1 moves toward the distal end, the working surface 31 is opened. Turning the knob 23 can drive the inner rod 21-1 and the outer rod 21-2 to rotate, thereby driving the working surface 31 to rotate.

[0093] In this embodiment, the elastic electrical interface device 43 includes a conductive connector 43-1, an elastic conductive mechanism 43-2 and an electrical interface 43-3. One end of the conductive connector 43-1 is connected to the electric heating device 32 through the line 41, and the other end is connected to the elastic conductive mechanism 43-2; the other end of the elastic conductive mechanism 43-2 is connected to the electrical interface 43-3, and the electrical interface 43-3 is connected to the power source 500.

[0094] The conductive joint 43-1 includes a rotor 43-1-1 and a stator 43-1-2; the rotor 43-1-1 can rotate; the distal end of the rotor 43-1-1 is connected to the proximal end of the shaft 21, and when the shaft 21 rotates, the rotor 43-1-1 can rotate synchronously; the proximal end of the stator 43-1-2 is connected to the distal end of the elastic conductive mechanism 43-2.

[0095] Since the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the rotor 43-1-1 and the shaft 21 also rotates synchronously, and the line 41 connecting the conductive connector 43-1 and the rear end of the shaft 21 remain synchronized, thereby avoiding wire breakage, loosening of solder joints, or heating of connectors caused by twisting of the line 41.

[0096] In this embodiment, the conductive joint 43-1 is a brush 43-11. The applicant only lists the brush as a conductive joint form, and those skilled in the art can design other conductive joint forms as needed without departing from the protection scope of this application.

[0097] The elastic conductive mechanism 43-2 is a conductive mechanism that can be elastically deformed under the action of external force while maintaining the circuit unobstructed. The elastic conductive mechanism 43-2 can be elastically deformed under the action of external force. Therefore, when the shaft 21 translates toward the proximal end, the shaft 21 applies pressure to the elastic conductive mechanism 43-2, and the elastic conductive mechanism 43-2 is compressed and deformed. When the shaft translates toward the distal end, the pressure applied by the shaft 21 to the elastic conductive mechanism 43-2 is gradually released. Under the action of the elastic restoring force, the connection state between the conductive connector 43-1 and the shaft 21 can be continuously maintained, and the stable power supply of the circuit system 400 can be maintained. In this movement cycle, the elastic conductive mechanism 43-2 is elastically deformed and reciprocates, which overcomes the fatigue fracture or loose solder joint or heating of the connector caused by the continuous expansion and contraction of the wires during the current wire connection. Not only does it maintain good controllability of the instrument, but it also improves the reliability of the circuit.

[0098] In this embodiment, the elastic conductive mechanism 43-2 is a coil spring mechanism in a spring structure. The spring mechanism can also be a tower spring mechanism, a compression spring mechanism, or other spring mechanisms, which the applicant does not list here. Those skilled in the art can also design the elastic conductive mechanism 43-2 into other elastic structures such as an elastomer structure as needed, which does not deviate from the protection scope of the art.

[0099] refer to Figure 8 and Fig. 9 The power source 500 may be a battery 51, a battery pack 52 or a host 53. The battery 51 or the battery pack 52 is small in size and light in weight, suitable for carrying outside, has low requirements for the power environment, and low-voltage power supply is safer. The host 53 can provide stable power supply for a long time, and is particularly suitable for large-scale operations with long operation time. Users can choose different power sources 500 according to different use environments and use requirements.

[0100] In this embodiment, the specific circuit connection method is as follows:

[0101] Positive electrode circuit: The positive electrode of the electric heating device 32 is connected to the circuit 41 arranged in the rod core of the inner rod 21-1. In order to enhance the strength of the inner rod 21-1 during translation and clamping, this part of the circuit 41 is arranged as a rigid conductive core rod 41-1. An insulating layer 44 is arranged between the conductive core rod 41-1 and the inner rod 21-1. One end of the conductive core rod 41-1 is connected to the positive electrode of the electric heating device 32, and the other end is connected to the positive electrode of the rotor 43-1-1. The other end of the positive electrode of the rotor 43-1-1 is connected to the positive electrode of the stator 43-1-2 by means of a brush. The other end of the positive electrode of the stator 43-1-2 is connected to the positive electrode of the elastic conductive mechanism 43-2. ​​The other end of the positive electrode of the elastic conductive mechanism 43-2 is connected to the positive electrode of the electrical interface 43-3, and is connected to the positive electrode of the power supply 500 via the electrical interface 43-3.

[0102] Negative pole circuit: the negative pole of the electric heating device 32 is connected to the distal end of the conductive inner rod 21-1, an insulating layer 44 is provided between the inner rod 21-1 and the outer rod 21-2, the proximal end of the inner rod 21-1 is connected to the negative pole of the rotor 43-1-1 via the circuit 41, the other end of the negative pole of the rotor 43-1-1 is connected to the negative pole of the stator 43-1-2 by means of a brush, the other end of the negative pole of the stator 43-1-2 is connected to the negative pole of the elastic conductive mechanism 43-2, the other end of the negative pole of the elastic conductive mechanism 43-2 is connected to the negative pole of the electrical interface 43-3, and is connected to the negative pole of the power supply 500 via the electrical interface 43-3.

[0103] In this embodiment, the working current flows in through the positive electrode of the electrical interface 43-3, flows into the stator 43-1-2 through the positive electrode of the stator 43-1-2 after passing through the elastic conductive mechanism 42, flows out of the stator 43-1-2 and then flows into the rotor 43-1-1 through the positive electrode of the rotor 43-1-1, flows out of the rotor 43-1-1 and then flows into the conductive core rod 41-1 from the proximal end of the conductive core rod 41-1, flows through the conductive core rod 41-1 and then enters the electric heating device 32 from the positive electrode of the electric heating device 32, drives the electric heating device 32 to generate heat, and the electric The current then flows out from the negative pole of the electric heating device 32 and enters the distal end of the inner rod 21-1, flows through the inner rod 21-1 and flows out from the proximal end of the inner rod 21-1, and enters the negative pole of the rotor 43-1-1, flows out from the negative pole of the rotor 43-1-1 and enters the negative pole of the stator 43-1-2, enters the elastic conductive mechanism 43-2 after flowing through the stator 43-1-2, flows through the elastic conductive mechanism 43-2 and flows into the electrical interface 43-3 from the distal end of the elastic conductive mechanism 43-2, and flows into the negative pole of the power supply 500 after passing through the electrical interface 43-3.

[0104] refer to Figure 2-1 and Figure 8 The tissue ablation, cutting and fusion system of this embodiment includes a prompt system 600. The prompt system 600 can prompt the operator of the use status of the instrument as needed, such as using different sounds to prompt different working states, using different lights to prompt the power status, using different patterns to prompt different working parts, etc.

[0105] In this embodiment, the applicant shows three prompting devices of the prompting system 600, namely, a sound prompting device 61, a light prompting device 62, and an image prompting device 63. Those skilled in the art can design different prompting system structures as needed, which do not deviate from the protection scope of this application.

[0106] In this embodiment, the tissue ablation, cutting and fusion system 900 includes a smoke exhaust system 700. The smoke exhaust system 700 includes a smoke outlet 71, a smoke exhaust pipe 72 and a smoke inlet 73. The smoke outlet 71 of the smoke exhaust system 700 can be connected to a medical negative pressure source to timely extract the smoke generated during the operation out of the body, thereby ensuring a clear surgical field of view and making the surgical process safer and more reliable.

[0107] refer to Figure 6 The tissue ablation, cutting and fusion system of the present invention may also include a water supply / drainage system 800. The water supply / drainage system 800 includes a water outlet 81, a drain pipe 82 and a water inlet 83. The drain pipe 82 of the water supply / drainage system 800 may be either a drain pipe or a water supply pipe. During the operation, the doctor may inject physiological saline or other solvents into the surgical site through the water supply / drainage system 800 according to the needs of the operation, or may promptly discharge blood or sewage from the surgical site through the water supply / drainage system 800 to ensure a smooth operation. At the same time, the water supply / drainage system 800 may also be used as the smoke exhaust system 700 to promptly discharge the smoke generated during the operation to ensure a clear surgical field of view.

[0108] During clinical use, the power supply 500 is connected to the circuit system 400 through the electrical interface 43-3, the power switch is turned on, the trigger 11-1 is pulled, the inner rod 21-1 is driven to move proximally, the working surface 31 is closed, and the working part 300 clamps the tissue to be treated. According to the surgical situation, the cutting gear 12-1 or the fusion gear 12-2 of the gear adjustment button 12 is pressed, and the gear adjustment button 12 is connected to the controller 42. The circuit system 400 connects the power supply 500 and the electric heating device 32, and the electric heating device 32 starts to generate heat to ablate, cut or fuse the tissue. During this process, the elastic conductive mechanism 43-2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply to the circuit 41 system 400. After the operation is completed, the trigger 11-1 is released, and the trigger 11-1 is reset under the action of the reset mechanism 16, and the inner rod 21-1 moves to the distal end, and the working surface 32 is opened, completing a tissue treatment process. At this time, the external force on the elastic conductive mechanism 43-2 is gradually eliminated, and under the action of the elastic restoring force, the connection state between the conductive joint 43-1 and the shaft 21 is maintained, and the stable power supply of the circuit system 400 is still maintained. When the working surface 32 needs to be rotated, it is only necessary to rotate the knob 23, and the knob 23 drives the shaft 21 to rotate, and the working surface 32 connected to the shaft 21 rotates accordingly. During the rotation process, because the rotor 43-1-1 can rotate synchronously with the shaft 21, the connection between the conductive joint 43-1 and the rear end of the telescopic shaft 21 is kept synchronous, which can avoid the wire breakage or loosening of the solder joint or heating of the joint caused by the distortion of the circuit 41. , thereby ensuring the stable power supply of the circuit system 400. Different tissue parts are selected in turn, and the trigger 11-1 is repeatedly pulled and released to complete the surgical operation. The surgical operation is very simple.

[0109] The tissue ablation, cutting and fusion system of this embodiment is designed with an elastic electrical interface. When the shaft 21 rotates, the rotor 43-1-1 of the conductive joint 43-1 and the shaft 21 can rotate synchronously, and the line 41 connecting the conductive joint 43-1 and the rear end of the shaft 21 is kept synchronous, which can avoid the wire breakage or solder joint loosening or joint heating caused by the twisting of the wire. When the inner rod 21-1 translates and reciprocates, the elastic conductive device 43-21 undergoes elastic deformation and reciprocates, which overcomes the fatigue breakage, solder joint loosening or joint heating caused by the continuous expansion and contraction of the wire when the wire is connected. The tissue ablation, cutting and fusion system of this embodiment not only maintains the good controllability of the instrument, but also improves the reliability of the circuit.

[0110] In this embodiment, the closing of the working surfaces 31 is achieved by translating one working surface 31 toward another working surface 31 .

[0111] refer to Figure 7 In actual application, the two working surfaces 31 can also be closed by rotating the working surfaces 31 around the rotating shaft 33. The working part 300 includes a first working part 301 and a second working part 302; the proximal end of the first working part 301 is connected to the distal end of the inner rod 21-1, and the proximal end of the second working part 302 is connected to the distal end of the outer rod 21-2. When the inner rod 21-1 moves toward the proximal end, it drives the first working part 301 to rotate around the rotating shaft 33, and the first working part 301 and the second working part 302 are closed. With this working part design, the working part 300 is very small in size in the closed state, and can enter the abdominal cavity through a very small channel, and then open the working part 300 for surgical operation, which is particularly suitable for use in various endoscopic minimally invasive surgeries.

[0112] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments introduced in the present invention are not the only structures for implementing the present invention. Although the preferred embodiments of the present invention have been introduced and described herein, it is clear to those skilled in the art that these embodiments are only for illustration, and those skilled in the art can make numerous changes, improvements and substitutions without departing from the present invention. Therefore, the protection scope of the present invention should be defined in accordance with the spirit and scope of the claims attached to the present invention.

Claims

1. A tissue ablation, cutting and fusion system, characterized in that: A. The tissue ablation, cutting and fusion system (900) comprises a handle assembly (100), an axis assembly (200), a working part (300), a circuit system (400) and a power source (500): B. The handle assembly (100) comprises a trigger assembly (11), a gear adjustment button (12), an axis connection mechanism (13) and a housing (14); the trigger assembly (11), the gear adjustment button (12) and the axis connection mechanism (13) are arranged on the housing (14); C. The shaft assembly (200) comprises a shaft rod (21) and a connecting assembly (22); D. The working portion (300) comprises at least two working surfaces (31), and at least one of the working surfaces (31) is provided with an electric heating device (32); E. The circuit system (400) comprises a circuit (41), a controller (42) and an elastic electrical interface device (43); the elastic electrical interface device (43) comprises a conductive joint (43-1), an elastic conductive mechanism (43-2) and an electrical interface (43-3); one end of the conductive joint (43-1) is connected to the electric heating device (32) via the circuit (41), and the other end is connected to the elastic conductive mechanism (43-2); the other end of the elastic conductive mechanism (43-2) is connected to the electrical interface (43-3) ) are connected together, the electrical interface (43-3) is connected to the power source (500); the conductive joint (43-1) comprises a rotor (43-1-1) and a stator (43-1-2); the rotor (43-1-1) is capable of rotating; the distal end of the rotor (43-1-1) is connected to the proximal end of the shaft (21), and when the shaft (21) rotates, the rotor (43-1-1) rotates synchronously; the proximal end of the stator (43-1-2) is connected to the proximal end of the elastic conductive mechanism (43-2); The rotor (43-1-1) rotates synchronously with the shaft (21), so the line (41) connecting the rotor (43-1-1) and the shaft (21) also rotates synchronously, and the line (41) connecting the conductive connector (43-1) and the rear end of the shaft (21) are kept synchronous, so as to avoid the breakage of the wire or the loosening of the solder joint caused by the twisting of the line (41); the elastic conductive mechanism (43-2) is used to keep the circuit unobstructed under the action of external force. The conductive mechanism undergoes elastic deformation, when the shaft (21) translates toward the proximal end, the shaft (21) applies pressure to the elastic conductive mechanism 43-2, and the elastic conductive mechanism (43-2) is compressed and deformed; when the shaft translates toward the distal end, the pressure applied by the shaft 21 to the elastic conductive mechanism (43-2) is gradually released, and under the action of the elastic restoring force, the connection state between the conductive connector (43-1) and the shaft (21) is continuously maintained, thereby maintaining stable power supply to the circuit system (400); F. The proximal end of the shaft assembly (200) is connected to the handle assembly (100) via the shaft connection mechanism (13); the distal end of the shaft assembly (200) is connected to the working part (300); and the electric heating device (32) is connected to the power source (500) via the circuit system (400).

2. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The handle assembly (100) further comprises a fixing mechanism (15); the trigger assembly (11) is fixedly mounted on the housing (14) via the fixing mechanism (15).

3. The tissue ablation, cutting and fusion system according to claim 2, characterized in that: The trigger assembly (11) comprises a trigger (11-1), a rocker arm (11-2) and a slide block (11-3); the trigger (11-1) is provided with a trigger shaft (11-1-1) and a rocker arm drive shaft (11-1-2); the rocker arm (11-2) comprises a rocker arm fulcrum (11-2-1), a motion slide groove (11-2-2) and a push block slot (11-2-3); the slide block (11-3) comprises a motion push block (11-3-1), a sliding convex step (11 -3-2) and a working boss (11-3-3); the trigger shaft (11-1-1) and the fixing mechanism (15) are connected together and fixed on the housing (14); one end of the rocker arm drive shaft (11-1-2) is connected to the trigger (11-1), and the other end is embedded in the motion slide groove (11-2-2); the rocker arm fulcrum (11-2-1) and the fixing mechanism (15) are connected together to move the rocker arm (11-2) The movable push block (11-3-1) is embedded in the push block slot (11-2-3), and the sliding convex step (11-3-2) is embedded in the positioning slot (15-1) of the fixing mechanism (15) and connected to the fixing mechanism (15); the trigger (11-1) is pulled, and the trigger (11-1) rotates around the trigger shaft (11-1-1), driving the rocker arm drive shaft (11-1 -2) reciprocates along the motion slide groove (11-2-2), thereby pushing the rocker arm (11-2) to swing back and forth around the rocker arm fulcrum (11-2-1); the reciprocating swing of the rocker arm (11-2) pushes the motion push block (11-3-1) embedded in the push block slot (11-2-3), thereby driving the slider to move back and forth in a straight line along the positioning slide groove (15-1), thereby realizing the closing and opening of the working surface (31) of the working part (300).

4. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The gear adjustment button (12) is connected to the controller (42) via the line (41).

5. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The gear adjustment button (12) comprises a cutting gear (12-1) and a fusion gear (12-2); the cutting gear (12-1) and the fusion gear (12-2) are linked together via a lever mechanism (12-3), so that the cutting gear (12-1) and the fusion gear (12-2) cannot be pressed at the same time.

6. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The handle assembly (100) further comprises a reset mechanism (16).

7. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The handle assembly (100) further comprises a force limiting mechanism (17).

8. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The shaft assembly (200) further comprises a knob (23); the knob (23) drives the shaft rod (21) to perform rotational movement.

9. The tissue ablation, cutting and fusion system according to claim 8, characterized in that: The shaft rod (21) comprises an inner rod (21-1) and an outer rod (21-2); the working surface (31) is connected to the distal ends of the inner rod (21-1) and the outer rod (21-2), respectively; when the inner rod (21-1) moves toward the proximal end, the working surface (31) is closed; when the inner rod (21-1) moves toward the distal end, the working surface (31) is opened; and the knob (23) is turned to drive the inner rod (21-1) and the outer rod (21-2) to rotate, thereby driving the working surface (31) to perform rotational movement.

10. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The conductive joint (43-1) is a brush (43-11).

11. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The elastic conductive mechanism (43-2) is a spring structure.

12. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The power source (500) is a battery (51) or a host (53).

13. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The tissue ablation, cutting and fusion system (900) further comprises a prompting system (600).

14. The tissue ablation, cutting and fusion system according to claim 13, characterized in that: The prompting system (600) is a sound prompting device (61), or a light prompting device (62), or an image prompting device (63).

15. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The tissue ablation, cutting and fusion system (900) further comprises a smoke exhaust system (700); the smoke exhaust system (700) comprises a smoke outlet (71), a smoke exhaust pipe (72) and a smoke inlet (73).

16. The tissue ablation, cutting and fusion system according to claim 1, characterized in that: The tissue ablation, cutting and fusion system (900) further comprises a water supply / drainage system (800); the water supply / drainage system (800) comprises a water outlet (81), a drainage pipe (82) and a water inlet (83).

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