CN110680497A - A tissue ablation, cutting and fusion system - Google Patents

Abstract

A 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 source. The controller of the circuit system is provided with a trigger switch. There is a trigger part on the trigger; when the trigger moves toward the grip direction of the housing until the force limiting mechanism acts, the trigger part touches the trigger switch, and the trigger switch is turned on; when the trigger moves away from the grip direction of the housing, the trigger part touches the trigger switch. The trigger part is separated from the trigger switch, and the trigger switch is disconnected. Because the trigger switch can be activated only when the force-limiting mechanism acts, so that the tissue ablation, cutting and fusion system of the present invention can only perform tissue ablation, cutting or fusion under the set working pressure, and the operation effect is more stable and effective. It prevents accidental injuries that may be caused by misoperation, and differences in clinical effects such as blood vessel closure, tissue fusion, and cutting caused by different clamping forces used by different surgeons, making it safer and more effective.

Description

A tissue ablation, cutting and fusion system

technical field

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

Background technique

In surgical operations, tissue ablation, cutting and fusion are very important tissue processing processes. Among the commonly used tissue ablation, cutting and fusion techniques, electric heating tissue ablation method is one of the important techniques. Modification of proteins to enable tissue ablation, cleavage, and fusion processes.

In the prior art tissue ablation, cutting and fusion systems, the connection of the circuit usually includes two switches: a power switch and a gear selection switch. The device begins to heat up. However, in actual clinical use, when the device is placed aside and not in use, due to forgetting to turn off the power switch and gear switch, or misoperation, the heating device of the device is in a heating state for a long time, and the device is in a continuous high temperature state. It is easy to cause damage to the instrument. On the other hand, if the instrument inadvertently touches inflammable materials such as bed sheets and towels in the operating room, it is easy to cause a fire and has a very obvious potential safety hazard.

Accordingly, there is a need for improvements in prior art tissue ablation, cutting and fusion systems, particularly further improvements in their circuitry.

SUMMARY OF THE INVENTION

The tissue ablation, cutting and fusion system of the present invention has a special trigger switch designed in its circuit system, the trigger switch can only be activated when the trigger is held tightly until the force limiting mechanism acts, and the gear adjustment button can be closed only when the trigger switch is turned on. , turn on the circuit system, so that the tissue ablation, cutting and fusion system of the present invention can only perform tissue ablation, cutting or fusion under the set working pressure, the operation effect is more stable, and the accident that may be caused by misoperation can be effectively prevented. Injury, and differences in clinical effects of vessel closure, tissue fusion, cutting, etc. caused by different clamping forces used by different surgeons, are safer and more effective, that is, a tissue ablation, cutting and fusion system of the present invention can only be used in constant clamping. The ablation, cutting and fusion of the tissue can be started only under the holding force, which avoids the difference in the use effect of the operator due to different force.

The tissue ablation, cutting and fusion system of the present invention is characterized in that:

A. The tissue ablation, cutting and fusion system 900 includes a handle assembly 100, a shaft assembly 200, a working part 300, a circuit system 400 and a power source 500:

B. The handle assembly 100 includes a trigger assembly 11, a gear adjustment button 12, a shaft connection mechanism 13 and a casing 14; the trigger assembly 11, the gear adjustment button 12 and the shaft connection mechanism 13 are provided in the casing 14. superior;

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

D. The working part 300 includes 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 includes a circuit 41, a controller 42 and an electrical interface device 43; the controller 42 includes a trigger switch 42-1; the movement of the trigger assembly 11 can turn on or off the trigger development 42 -1; the circuit system 400 is connected to the power supply 500 through the electrical interface device 43;

F. The proximal end of the shaft assembly 200 is connected with the handle assembly 100 through the shaft connecting mechanism 13; the distal end of the shaft assembly 200 is connected with the working part 300; the electric heating device 32 is connected through the The circuit system 400 is connected to the power supply 500 .

In the tissue ablation, cutting and fusion system of the present invention, the trigger switch 42-1 can be turned on only by pulling the trigger assembly 11 and applying working pressure to the working part 300 to heat the electric heating device 32, and misoperation Accidental injuries or potential safety hazards that may result, the clinical use process is safer and more reliable.

The handle assembly 100 further includes a fixing mechanism 15 ; the trigger assembly 11 is fixedly installed on the housing (14) through the fixing mechanism 15 . During assembly, the trigger assembly 11 can be inlaid or fixed in the mounting groove of the fixing mechanism 5, assembled into a whole and then fixed on the housing 14, the assembly process is simpler and the fixation is more reliable.

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 rotation 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 chute 11-2-2 and a push block slot 11-2-3; the slider 11-3 includes a motion push block 11-3 -1. The sliding boss 11-3-2 and the working boss 11-3-3; the trigger shaft 11-1-1 and the fixing mechanism 15 are connected together and fixed on the casing 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 movement chute 11-2-2; the rocker arm fulcrum 11-2-1 and the The fixing mechanism 15 is connected together, and the rocker arm 11-2 is movably installed in the housing 14; the moving push block 11-3-1 is embedded in the push block slot 11-2-3 Inside, the sliding convex step 11-3-2 is embedded in the positioning chute 15-1 of the fixing mechanism 15, and is connected with the fixing mechanism 15; pull the trigger 11-1, the trigger 11-1 rotates around the trigger shaft 11-1-1, driving the rocker arm drive shaft 11-1-2 to reciprocate along the movement chute 11-2-2, thereby pushing the rocker arm 11-2 Swings reciprocatingly 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 to drive The sliding block moves linearly back and forth along the positioning chute 15 - 1 , so as to realize the closing and opening of the working surface 31 of the working part 300 .

The trigger 11-1 is provided with a trigger portion 11-1-3; when the trigger 11-1 moves toward the handle 14-1 of the housing 14, the trigger portion 11-1-3 touches the trigger portion 11-1-3. When the trigger switch 42-1 is touched, the trigger switch 42-1 is turned on; when the trigger 11-1 moves away from the handle 14-1 of the housing 14, the trigger portion 11-1- 3. Disengage the trigger switch 42-1, and the trigger switch 42-1 is turned off.

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

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 Fusion 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.

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 by the reset force, which greatly improves the safety, convenience and comfort of the use process. The reset mechanism 16 can be in various forms such as a torsion spring mechanism, a spring mechanism, or an elastic body mechanism. Those skilled in the art can design various reset mechanisms as required, and combine one or more of the reset mechanisms as required. The reset mechanism 16 is installed in different parts of the instrument without departing from the scope of protection of the present application.

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 acts, the operator pulls the trigger 11-1 and applies it to the working part 300. The maximum working pressure of the working part 300 is constant. Usually, during the ablation, cutting and fusion of soft tissue, the maximum working pressure can be limited to below 100N. 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 required, without departing from the protection scope of the present application. The force-limiting mechanism 17 can be a spring force-limiting mechanism, an elastic body force-limiting mechanism, or a compression spring force-limiting mechanism, etc., and those skilled in the art can also design other various forms of force-limiting mechanisms. , without departing from the scope of protection of the present application.

The trigger 11-1 moves toward the handle 14-1 of the housing 14 until the force limiting mechanism 17 acts, then the trigger switch 42-1 can be activated. Only in the ON state can the gear adjustment button 12 be closed and the circuit system 400 turned on, so that the tissue ablation, cutting and fusion system 900 can perform tissue ablation, cutting or fusion under the set working pressure. Because the trigger switch 42-1 can be activated only when the force limiting mechanism 17 acts, it is ensured that the working pressure exerted on the tissue by the doctor during the operation is constant, thereby realizing the tissue ablation, cutting and fusion of the present invention. The system needs to perform tissue ablation, cutting or fusion under the set working pressure, and the surgical effect is more stable, effectively preventing accidental injuries that may be caused by misoperation, and blood vessels caused by different clamping forces used by different surgeons. Closure, tissue fusion, cutting and other clinical effects are different, and it is safer and more effective, that is, a tissue ablation, cutting and fusion system of the present invention can only start tissue ablation, cutting and fusion under constant clamping force, which avoids operation. The difference in the use effect caused by the different force.

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

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 When it moves proximally, the working surface 31 is closed; when the inner rod 21-1 moves distally, the working surface 31 opens; turning the knob 23 can drive the inner rod 21-1 and The outer rod 21-2 rotates, thereby driving the working surface 31 to rotate.

During clinical use, the working surface 31 needs to be rotated to an appropriate position according to the different parts of the tissue to be treated. Appropriate orientation and location.

The electrical interface device 43 is an elastic electrical interface device 431, and the elastic electrical interface device 431 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 passes through the The circuit 41 is connected to the electric heating device 32, 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. The interface 43 - 3 is connected to the power supply 500 .

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 and the shaft The proximal ends of 21 are connected together. 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. ends are connected together.

Because 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, connecting the The synchronization between the conductive joint 43 - 1 and the line 41 at the rear end of the shaft 21 can be avoided, which may prevent the wire breakage or the loosening of the solder joints caused by the twist of the line 41 .

The elastic conductive mechanism 43-2 is a conductive mechanism that can elastically deform under the action of an external force while keeping the circuit unobstructed. The elastic conductive mechanism 43-2 can be elastically deformed under the action of external force. Therefore, when the shaft rod 21 translates toward the proximal end, the shaft rod 21 applies pressure to the elastic conductive mechanism 43-2, and the The elastic conductive mechanism 43-2 is compressed and deformed. When the shaft is translated to the distal end, the pressure exerted by the shaft 21 on the elastic conductive mechanism 43-2 is gradually released. Under the action of the elastic restoring force, it can continue to The connection state of the conductive joint 43-1 and the shaft 21 is maintained, and the stable power supply of the circuit system 400 is maintained. During this movement cycle, the elastic conductive mechanism 43-2 is elastically deformed and performs a reciprocating action, which overcomes the fatigue fracture or solder joint loosening caused by the continuous expansion and contraction of the wire during the current wire connection. It not only maintains the good controllability of the instrument, but also improves the reliability of the circuit.

The power source 500 is 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, and is suitable for going out. It has low requirements for the power consumption environment, and the low-voltage power supply is also more secure. Major surgery; the user can choose different power sources 500 according to different usage environments and usage requirements.

The tissue ablation, cutting and fusion system 900 also includes a prompting system 600 . The prompting system 600 can prompt the operator of the use state of the instrument as required, such as prompting different working states with different sounds, prompting the state of the power supply with different lights, prompting different working parts with different patterns, and the like.

The prompting system 600 is a sound prompting device 61 , a light prompting device 62 , or an image prompting device 63 . The applicant only lists the above three kinds of prompting devices, and those skilled in the art can design different prompting system structures as required, all without departing from the protection scope of the present application.

The tissue ablation, cutting and fusion system 900 further 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, so that the smoke generated during the operation can be extracted out of the body in time, so as to ensure a clear operation field and make the operation process safer and more reliable.

The tissue ablation, cutting and fusion system 900 further includes a water supply/drainage system 800 ; the water supply/drainage system 800 includes a water outlet 81 , a drainage 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 operation site through the water supply/drainage system 800 according to the needs of the operation, and can also timely remove the blood or sewage from the operation site through the water supply/drainage system 800. To ensure the smooth progress of the surgical process.

In clinical use, connect the power supply 500 to the circuit system 400 through the electrical interface 43-3, turn on the power switch, pull the trigger 11-1 to move in the direction of the handle 14-1, and drive the The inner rod 21-1 moves toward the proximal end, the working surface 31 is closed, the working part 300 clamps the tissue to be treated and continues to pull the trigger 11-1 until the force limiting mechanism 17 acts, Turn on the trigger switch 42-1, and select the cutting gear 12-1 or the fusion gear 12-2 by pressing the gear adjustment button 12 according to the surgical situation, and the gear adjustment button 12 will turn on the controller 42. At this time, the circuit system 400 turns on 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. The elastic conductive mechanism 43 - 2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply of the circuit system 400 . After the operation is completed, release the trigger 11-1, the trigger 11-1 is reset under the action of the reset mechanism 16, the trigger switch 42-1 is turned off, and the electric heating device 32 stops working and does not continue. When heat is generated, the inner rod 21-1 moves to the distal end, the working surface 32 is opened, and a tissue treatment process is completed. When the working surface 32 needs to be rotated, only the knob 23 needs to be rotated, 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, since the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the conductive joint 43-1 and the rear end of the shaft 21 is kept between Synchronization can avoid wire breakage or solder joint loosening or joint heating that may be caused by the twisting of the line 41 . , thereby ensuring stable power supply of the circuit system 400 . Selecting different tissue parts in turn, pulling and releasing the trigger 11-1 repeatedly, the operation can be completed, and the operation during the operation is very simple.

The tissue ablation, cutting and fusion system of the present invention includes a handle assembly 100 , a shaft assembly 200 , a working part 300 , a circuit system 400 and a power source 500 . The controller 42 of the circuit system 400 is provided with a trigger switch 42-1. The trigger 11-1 is provided with a trigger portion 11-1-3; when the trigger 11-1 moves toward the handle 14-1 of the housing 14 until the force limiting mechanism 17 acts, all the The triggering portion 11-1-3 touches the trigger switch 42-1, and the trigger switch 42-1 is turned on; when the trigger 11-1 moves away from the handle 14-1 of the housing 14 When the triggering part 11-1-3 is separated from the trigger switch 42-1, the trigger switch 42-1 is turned off. Because the trigger switch 42-1 can be activated only when the force limiting mechanism 17 acts, so that the tissue ablation, cutting and fusion system of the present invention can only perform tissue ablation, cutting or fusion under the set working pressure. , the surgical effect is more stable, and the accidental injury that may be caused by misoperation can be effectively prevented, and the clinical effect of blood vessel closure, tissue fusion, cutting and other differences caused by different clamping forces used by different surgeons is more safe and effective. A tissue ablation, cutting and fusion system of the present invention can only start to perform tissue ablation, cutting and fusion under constant clamping force, which avoids the difference of the use effect caused by the different force of the operator.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of the tissue ablation, cutting and fusion system of the present invention when the working surface is opened.

Fig. 1-1 is a schematic three-dimensional structure diagram of the working face of Fig. 1 when it is closed.

FIG. 2 is a front view of FIG. 1 .

FIG. 2-1 is a cross-sectional view taken along line A-A of FIG. 2 .

Fig. 2-2 is an enlarged view of part B of Fig. 2-1.

Fig. 3 is a front view of Fig. 1-1.

FIG. 3-1 is a cross-sectional view taken along the line C-C of FIG. 3 .

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

FIG. 5 is a schematic structural diagram of the shaft assembly of the tissue ablation, cutting and fusion system of the present invention.

FIG. 5-1 is a D-D cross-sectional view of FIG. 5 .

FIG. 6 is a schematic three-dimensional structure diagram of the tissue ablation, cutting and fusion system of the present invention including the water supply/drainage system.

FIG. 6-1 is an enlarged view of E in FIG. 6 .

FIG. 7 is a schematic three-dimensional structure diagram of the tissue ablation, cutting and fusion system of the present invention with clamping forceps.

FIG. 7-1 is an enlarged view of F in FIG. 7 .

FIG. 8 is a schematic three-dimensional structure diagram of the tissue ablation, cutting and fusion system of the present invention with a battery and a battery pack.

FIG. 9 is a schematic three-dimensional structure diagram of the tissue ablation, cutting and fusion system of the present invention with a host.

In the above picture:

100 is the handle assembly, 200 is the shaft assembly, 300 is the working part, 400 is the circuit system, 500 is the power supply, 600 is the prompt system, 700 is the smoke exhaust system, 800 is the water supply/drainage system, 900 is the tissue ablation, Cutting and fusion system.

On the handle assembly:

11 is the trigger assembly, 12 is the gear adjustment button, 13 is the shaft connection mechanism, 14 is the casing, 15 is the fixing mechanism, 16 is the reset mechanism, and 17 is the force limiting mechanism.

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, 11-1-3 is the trigger part, 11 -2-1 is the fulcrum of the rocker arm, 11-2-2 is the motion chute, 11-2-3 is the push block slot, 11-3-1 is the motion push block, 11-3-2 is the sliding convex step, 11-3-3 is the working boss.

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

14-1 is the grip.

15-1 is the positioning chute.

17-1 is the spring force limiting mechanism.

On the shaft assembly:

21 is a shaft, 22 is a connecting component, and 23 is a knob.

21-1 is the inner rod and 21-2 is the outer rod.

On the work department:

31 is the working face, 32 is the electric heating device, 33 is the rotating shaft; 31-1 is the distal working face, 31-2 is the proximal working face; 301 is the first working part, and 302 is the second working part.

On the circuit system:

41 is a circuit, 42 is a controller, 43 is an electrical interface device, 44 is an insulating layer, and 431 is an elastic electrical interface device.

41-1 is the conductive core rod, 42-1 is the trigger switch, 43-1 is the conductive joint, 43-2 is the elastic conductive mechanism, 43-3 is the electrical interface; 43-1-1 is the rotor, 43-1-2 For the stator; brushes 43-11.

On the power supply:

51 is the battery, 52 is the battery pack, and 53 is the host.

Prompt on the system:

61 is a sound prompting device, 62 is a light prompting device, and 63 is an image prompting device.

On the exhaust system:

71 is a smoke outlet, 72 is a smoke exhaust pipe, and 73 is a smoke inlet.

On the water supply/drainage system:

81 is a water outlet, 82 is a drain pipe, and 83 is a water inlet.

Detailed ways

Example: Tissue Ablation, Cutting and Fusion System of the Present Invention

1 to 6-1 , the tissue ablation, cutting and fusion system 900 of this embodiment includes a handle assembly 100 , a shaft assembly 200 , a working part 300 , a circuit system 400 , a power supply 500 , a prompting system 600 and a smoke exhaust system 700 .

The handle assembly 100 includes a trigger assembly 11 , a gear adjustment button 12 , a shaft 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 shaft connecting mechanism 13 are provided on the housing 14.

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

The working part 300 includes two working surfaces 31 , and one of the working surfaces 31 is provided with an electric heating device 32 .

The circuit system 400 includes a circuit 41 , a controller 42 and an electrical interface device 43 . The circuit system 400 is connected to the power supply 500 through the electrical interface device 43 .

In this embodiment, the controller 42 includes a trigger switch 42-1; the movement of the trigger assembly 11 can turn on or off the trigger switch 42-1.

The proximal end of the shaft assembly 200 is connected with the handle assembly 100 through the shaft connecting mechanism 13; the distal end of the shaft assembly 200 is connected with the working part 300; the electric heating device 32 is connected through the electrical circuit system 400 is connected to the power supply 500 .

Referring to FIG. 3 , 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 rotating shaft 11-1-1 and a rocker arm drive shaft 11- 1-2; the rocker arm 11-2 includes the rocker arm fulcrum 11-2-1, the movement chute 11-2-2 and the push block slot 11-2-3; the slider 11-3 includes the movement pusher Block 11-3-1, sliding boss 11-3-2 and 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 movement chute 11-2-2; the rocker arm fulcrum 11-2- 1 is connected with the fixing mechanism 15, and the rocker arm 11-2 is movably installed in the housing 14; the moving push block 11-3-1 is embedded in the push block slot 11 -2-3, the sliding convex step 11-3-2 is embedded in the positioning chute 15-1 of the fixing mechanism 15, and is connected with the fixing mechanism 15; pull the trigger 11-1 , the trigger 11-1 rotates around the trigger shaft 11-1-1, and drives the rocker arm drive shaft 11-1-2 to reciprocate along the movement chute 11-2-2, thereby pushing the rocker The arm 11-2 swings reciprocatingly around the rocker arm fulcrum 11-2-1; the reciprocating swing of the rocker arm 11-2 pushes the moving push block 11-3 embedded in the push block slot 11-2-3 -1 to drive the sliding block to move back and forth linearly along the positioning chute 15-1, so as to realize the closing and opening of the working surface 31 of the working part 300.

The trigger 11-1 is provided with a trigger portion 11-1-3; when the trigger 11-1 moves toward the handle 14-1 of the housing 14, the trigger portion 11-1-3 touches the trigger portion 11-1-3. When the trigger switch 42-1 is touched, the trigger switch 42-1 is turned on; when the trigger 11-1 moves away from the handle 14-1 of the housing 14, the trigger portion 11-1- 3. Disengage the trigger switch 42-1, and the trigger switch 42-1 is turned off.

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

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 all the 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.

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 chute 15-1 of the fixing mechanism 15. When the trigger 11-1 is pressed, 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 to the distal end, and the trigger 11-1 automatically resets.

Those skilled in the art can also design various reset mechanisms as required, and install one or more of the reset mechanisms 16 on different parts of the instrument as required, all without departing from the protection scope of the present application.

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 acts, the operator pulls the trigger 11-1 and applies it to the working part 300. The maximum working pressure of the working part 300 is constant. Usually, during the ablation, cutting and fusion of soft tissue, the maximum working pressure can be limited to below 100N. 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 required, without departing from the protection scope of the present application.

In this embodiment, the trigger switch 42-1 cannot be activated until the trigger 11-1 moves toward the handle 14-1 of the housing 14 until the force limiting mechanism 17 acts. Only when the switch 42-1 is turned on can the gear adjustment button 12 be closed, the circuit system 400 is turned on, and the tissue ablation, cutting and fusion system 900 can perform tissue ablation, cutting or fusion under the set working pressure. fusion. Because the trigger switch 42-1 can be activated only when the force limiting mechanism 17 acts, it is ensured that the working pressure exerted on the tissue by the doctor during the operation is constant, thereby avoiding the need for different operators to exert pressure on the tissue. The difference in surgical effect caused by different working pressures makes the surgical effect more stable during the operation, and at the same time effectively avoids the potential safety hazard caused by the continuous heating of the electric heating device 32 in the non-working state, and the use process is safer and more reliable. Of course, those skilled in the art can also design the on-state of the trigger switch 42-1 to be in different states as required, but they do not deviate from the protection scope of the present application.

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 disposed 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 is elastically deformed to reach The role of limiting the amount of work pressure.

Those skilled in the art can also design other force-limiting mechanisms, such as an elastic body force-limiting mechanism, or a compression spring force-limiting mechanism, without departing from the protection scope of the present application.

During clinical use, it is often necessary to rotate the working surface 31 to a suitable position according to 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 The shaft 21 performs a rotational movement.

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- When the 1 moves proximally, the working surface 31 is closed; when the inner rod 21-1 moves distally, the working surface 31 opens. 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.

In this embodiment, the electrical interface device 43 is an elastic electrical interface device 431, and the elastic electrical interface device 431 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 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, and the electrical interface 43-3 is connected to the power supply 500.

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 and the shaft The proximal ends of 21 are connected together. 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. ends are connected together.

Because 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, connecting the The synchronization between the conductive joint 43-1 and the line 41 at the rear end of the shaft 21 can be avoided, which can avoid the wire breakage or the loosening of the solder joint or the joint heating which may be caused by the twist of the line 41 .

The elastic conductive mechanism 43-2 is a conductive mechanism that can elastically deform under the action of an external force while keeping the circuit unobstructed. The elastic conductive mechanism 43-2 can be elastically deformed under the action of external force. Therefore, when the shaft rod 21 translates toward the proximal end, the shaft rod 21 applies pressure to the elastic conductive mechanism 43-2, and the The elastic conductive mechanism 43-2 is compressed and deformed. When the shaft is translated to the distal end, the pressure exerted by the shaft 21 on the elastic conductive mechanism 43-2 is gradually released. Under the action of the elastic restoring force, it can continue to The connection state of the conductive joint 43-1 and the shaft 21 is maintained, and the stable power supply of the circuit system 400 is maintained. During this motion cycle, the elastic conductive mechanism 43-2 is elastically deformed and performs a reciprocating action, which overcomes the fatigue fracture or solder joint loosening or joint heating caused by the continuous expansion and contraction of the wire during the current wire connection. It not only maintains the good controllability of the instrument, but also improves the reliability of the circuit.

In this embodiment, the elastic conductive mechanism 43-2 is a coil spring mechanism. The elastic conductive mechanism 43-2 may also be various spring mechanisms such as a tower-shaped spring mechanism or a compression spring mechanism, which the applicant will not list one by one here. Those skilled in the art can also design the elastic conductive mechanism 43-2 into various other elastic structures such as an elastic body structure as required, without departing from the protection scope of the art.

Referring to FIGS. 8 and 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, and is suitable for going out. It has low requirements for the power consumption environment, and the low-voltage power supply is also more secure. Major surgery; the user can choose different power sources 500 according to different usage environments and usage requirements.

In this embodiment, the specific circuit connection is as follows:

Positive line: The positive electrode of the electric heating device 32 is connected to the line 41 arranged in the 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 The circuit 41 is set as a rigid conductive core rod 41-1, an insulating layer 44 is provided between the conductive core rod 41-1 and the inner rod 21-1, and one end of the conductive core rod 41-1 is connected to the The positive pole of the electric heating device 32, the other end is connected to the positive pole of the rotor 43-1-1, and the other end of the positive pole of the rotor 43-1-1 and the positive pole of the stator 43-1-2 pass through a brush The other end of the positive pole of the stator 43-1-2 is connected to the positive pole of the elastic conductive mechanism 43-2, and the other end of the positive pole of the elastic conductive mechanism 43-2 is connected to the electrical interface. The positive pole of 43-3 is connected to the positive pole of the power supply 500 via the electrical interface 43-3.

Negative electrode circuit: the negative electrode of the electric heating device 32 is connected to the distal end of the inner rod 21-1 which is conductive, and 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 line 41, and the other end of the negative pole of the rotor 43-1-1 is connected to the stator 43-1- The negative electrode of 2 is connected by a brush, and the other end of the negative electrode of the stator 43-1-2 is connected to the negative electrode of the elastic conductive mechanism 43-2, and the other end of the negative electrode of the elastic conductive mechanism 43-2 is connected to the negative electrode of the elastic conductive mechanism 43-2. One end 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.

In this embodiment, the working current flows into the stator 43-1-2 through the positive electrode of the electrical interface 43-3, passes through the elastic conductive mechanism 42, and then flows into the stator 43-1-2 through the positive electrode of the stator 43-1-2. After the stator 43-1-2 flows out, it flows into the rotor 43-1-1 through the positive pole of the rotor 43-1-1, and flows out from the rotor 43-1-1 from the conductive core rod 41. The proximal end of -1 flows into the conductive core rod 41-1, flows through the conductive core rod 41-1 and enters the electric heating device 32 from the positive pole of the electric heating device 32, and drives the electric heating device 32 Heat is generated, the current then flows out from the negative electrode of the electric heating device 32 and then 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 enter the negative pole of the rotor 43-1-1, flow out through the negative pole of the rotor 43-1-1, enter the negative pole of the stator 43-1-2, and enter the stator 43-1-2. The elastic conductive mechanism 43-2 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 then flows into the electrical interface 43-3. The negative pole of the power supply 500 .

Referring to FIGS. 2-1 and 8 , the tissue ablation, cutting and fusion system of this embodiment includes a prompting system 600 . The prompting system 600 can prompt the operator of the use state of the instrument as required, such as prompting different working states with different sounds, prompting the state of the power supply with different lights, prompting different working parts with different patterns, and the like.

For the prompting system 600 in this embodiment, the applicant shows three prompting devices: 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 required, all without departing from the protection scope of the present application.

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, so that the smoke generated during the operation can be extracted out of the body in time, so as to ensure a clear operation field and make the operation process safer and more reliable.

Referring to FIG. 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 drainage 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 operation site through the water supply/drainage system 800 according to the needs of the operation, and can also timely remove the blood or sewage from the operation site through the water supply/drainage system 800. To ensure the smooth progress of the surgical process. At the same time, the water supply/drainage system 800 can also be used as the smoke exhaust system 700 to expel the smoke generated during the operation from the body in time to ensure a clear operation field.

In clinical use, connect the power supply 500 to the circuit system 400 through the electrical interface 43-3, turn on the power switch, pull the trigger 11-1 to move in the direction of the handle 14-1, and drive the The inner rod 21-1 moves toward the proximal end, the working surface 31 is closed, the working part 300 clamps the tissue to be treated and continues to pull the trigger 11-1 until the force limiting mechanism 17 acts, Turn on the trigger switch 42-1, and select the cutting gear 12-1 or the fusion gear 12-2 by pressing the gear adjustment button 12 according to the surgical situation, and the gear adjustment button 12 will turn on the controller 42. At this time, the circuit system 400 turns on 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. The elastic conductive mechanism 43 - 2 is elastically deformed under the thrust of the inner rod 21 to maintain stable power supply of the circuit system 400 . After the operation is completed, release the trigger 11-1, the trigger 11-1 is reset under the action of the reset mechanism 16, the trigger switch 42-1 is turned off, and the electric heating device 32 stops working and does not continue. When heat is generated, the inner rod 21-1 moves to the distal end, the working surface 32 is opened, and a tissue treatment process is completed. When the working surface 32 needs to be rotated, only the knob 23 needs to be rotated, 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, since the rotor 43-1-1 can rotate synchronously with the shaft 21, the line 41 connecting the conductive joint 43-1 and the rear end of the shaft 21 is kept between Synchronization can avoid wire breakage or solder joint loosening or joint heating that may be caused by the twisting of the line 41 . , thereby ensuring stable power supply of the circuit system 400 . Selecting different tissue parts in turn, pulling and releasing the trigger 11-1 repeatedly, the operation can be completed, and the operation during the operation is very simple.

In this embodiment, the trigger 11-1 moves toward the handle 14-1 of the housing 14 until the force limiting mechanism 17 acts, and then the trigger 11-1-3 touches the trigger portion 11-1-3. When the trigger switch 42-1 is triggered, the trigger switch 42-1 is turned on; when the trigger 11-1 moves away from the handle 14-1 of the housing 14, the trigger part 11-1-3 is disengaged The trigger switch 42-1 is turned off. Because the trigger switch 42-1 can be activated only when the force limiting mechanism 17 acts, so that the tissue ablation, cutting and fusion system of the present invention can only perform tissue ablation, cutting or fusion under the set working pressure. , the surgical effect is more stable, and the accidental injury that may be caused by misoperation can be effectively prevented, and the clinical effect of blood vessel closure, tissue fusion, cutting and other differences caused by different clamping forces used by different surgeons is more safe and effective. A tissue ablation, cutting and fusion system of the present invention can only start to perform tissue ablation, cutting and fusion under constant clamping force, which avoids the difference of the use effect caused by the different force of the operator.

In this embodiment, the closing of the working surfaces 31 is realized by translating one of the working surfaces 31 to the other working surfaces 31 .

Referring to FIG. 7 , in practical applications, the two working surfaces 31 can also be closed by rotating the working surfaces 31 around the rotation axis 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 with the distal end of the inner rod 21-1, and the second working part 302 has a The proximal end is connected with 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 The part 301 and the second working part 302 are closed. With this working part design, the working part 300 has a small volume in the closed state, and can enter the abdominal cavity through a small channel, and then open the working part 300 for surgical operations, especially suitable for various endoscopic minimally invasive surgeries used in.

It should be noted that the structures disclosed and described herein may be replaced by other equally effective structures, and the described embodiments of the present invention are not the only structures for implementing the present invention. Although the preferred embodiments of the present invention have been described and illustrated herein, it is clear to those skilled in the art that these embodiments are merely illustrative and that numerous changes and improvements can be made by those skilled in the art Instead, without departing from the present invention, the protection scope of the present invention should be defined in accordance with the spirit and scope of the appended claims of the present invention.

Claims (19)

1. a tissue ablation, cutting and fusion system is characterized in that: A. The tissue ablation, cutting and fusion system (900) includes a handle assembly (100), a shaft assembly (200), a working part (300), a circuit system (400) and a power source (500); B. The handle assembly (100) includes a trigger assembly (11), a gear adjustment button (12), a shaft connection mechanism (13) and a housing (14); the trigger assembly (11), the gear adjustment button ( 12) and the shaft connecting mechanism (13) are provided on the casing (14); C. The shaft assembly (200) includes a shaft rod (21) and a connecting assembly (22); D. The working part (300) includes 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) includes a circuit (41), a controller (42) and an electrical interface device (43); the controller (42) includes a trigger switch (42-1); the trigger assembly (11) ) movement can turn on or off the triggering development (42-1); the circuit system (400) is connected with the power supply (500) through the electrical interface device (43); F. The proximal end of the shaft assembly (200) is connected with the handle assembly (100) through the shaft connecting mechanism (13); the distal end of the shaft assembly (200) is connected with the working part (300) ; The electric heating device (32) is connected with the power supply (500) through 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) passes through the fixing mechanism (15) It is fixedly mounted on the casing (14). 3. The tissue ablation, cutting and fusion system according to claim 2, wherein the trigger assembly (11) comprises a trigger (11-1), a rocker arm (11-2) and a slider (11-3) ; The trigger (11-1) is provided with a trigger rotating 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), motion chute (11-2-2) and push block slot (11-2-3); the slider (11-3) includes motion push block (11-3-1), sliding block The convex step (11-3-2) and the working boss (11-3-3); the trigger rotating shaft (11-1-1) and the fixing mechanism (15) are connected together and fixed on the casing (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 movement chute (11-2-2); so The rocker arm fulcrum (11-2-1) and the fixing mechanism (15) are connected together, and the rocker arm (11-2) is movably installed in the housing (14); the movement The 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 slide of the fixing mechanism (15). is connected with the fixing mechanism (15) in the groove (15-1); when the trigger (11-1) is pulled, the trigger (11-1) revolves around the trigger axis (11-1-1). ) rotates to drive the rocker arm drive shaft (11-1-2) to reciprocate along the movement chute (11-2-2), thereby pushing the rocker arm (11-2) around the rocker arm fulcrum (11-2-1) Reciprocating swing; 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) Therefore, the sliding block is driven to move linearly back and forth along the positioning chute (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 3, characterized in that: the trigger (11-1) is provided with a trigger portion (11-1-3); when the trigger (11-1) When moving toward the handle (14-1) of the housing (14), the trigger portion (11-1-3) touches the trigger switch (42-1), and the trigger switch (42- 1) Turn on; when the trigger (11-1) moves away from the handle (14-1) of the housing (14), the trigger portion (11-1-3) is separated from the trigger switch (42-1), the trigger switch (42-1) is turned off. 5 . The tissue ablation, cutting and fusion system according to claim 1 , wherein the gear adjustment button ( 12 ) is connected to the controller ( 42 ) through the line ( 41 ). 6 . 6. 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 by a lever mechanism (12-3), so that the cutting gear (12-1) and the fusion gear (12-2) cannot be pressed simultaneously. 7. The tissue ablation, cutting and fusion system according to claim 1, wherein the handle assembly (100) further comprises a reset mechanism (16). 8. The tissue ablation, cutting and fusion system according to claim 1, wherein the handle assembly (100) further comprises a force limiting mechanism (17). 9. The tissue ablation, cutting and fusion system according to claim 8, characterized in that: the trigger (11-1) moves toward the direction of the handle (14-1) of the housing (14) until the limit is reached The trigger switch (42-1) can only be activated when the force mechanism (17) acts, and the gear adjustment button (12) can be closed only when the trigger switch (42-1) is turned on. The circuit system (400) enables the tissue ablation, cutting and fusion system (900) to perform tissue ablation, cutting or fusion under a set working pressure. 10. 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) can drive the shaft (21) to perform Rotational movement. 11. The tissue ablation, cutting and fusion system according to claim 10, characterized in that: the shaft (21) comprises an inner rod (21-1) and an outer rod (21-2); the working surface (31) ) are 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 to 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) Rotate, and then drive the working surface (31) to rotate. 12. The tissue ablation, cutting and fusion system according to claim 1, wherein the electrical interface device (43) is an elastic electrical interface device (431), and the elastic electrical interface device (431) comprises a conductive connector ( 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) through the line (41), 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) connected to the power supply (500). 13. The tissue ablation, cutting and fusion system according to claim 12, characterized in that: the conductive joint (43-1) comprises a rotor (43-1-1) and a stator (43-1-2); the The rotor (43-1-1) can be rotated; the distal end of the rotor (43-1-1) and the proximal end of the shaft (21) are connected together, 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 with the distal end of the elastic conductive mechanism (43-2). 14 . The tissue ablation, cutting and fusion system according to claim 12 , wherein the elastic conductive mechanism ( 43 - 2 ) is a conductive mechanism that can elastically deform under the action of external force while keeping the circuit unobstructed. 15 . 15. The tissue ablation, cutting and fusion system according to claim 1, wherein the power source (500) is a battery (51), a battery pack (52) or a host (53). 16. The tissue ablation, cutting and fusion system according to claim 1, wherein the tissue ablation, cutting and fusion system (900) further comprises a prompting system (600). 17. The tissue ablation, cutting and fusion system according to claim 16, wherein the prompting system (600) is a sound prompting device (61), a light prompting device (62), or an image prompting device (63) . 18. 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 extraction system (700); the smoke extraction system (700) comprises Smoke outlet (71), smoke exhaust pipe (72) and smoke inlet (73). 19. 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) ) contains the water outlet (81), the drain pipe (82) and the water inlet (83).

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