Electrosurgical instrument

Abstract

The utility model relates to the technical field of medical instruments, and discloses an electrosurgical operating instrument which comprises a control handle, a shaft assembly and an end effector, and the end effector comprises a push broach and an electrode; the control handle comprises a shell, an excitation switch and a cutting switch, the excitation switch is used for controlling the electrosurgical host to output energy to the electrode, and when an operator holds the control handle, the excitation switch and the cutting switch are located in areas touched by different fingers of the operator respectively; the control handle further comprises a driving assembly, the driving assembly is arranged in the shell, the cutting switch is connected with the driving assembly, the driving assembly is further connected with the push broach, and the driving assembly can drive the push broach to reciprocate in the axis direction of the push broach by triggering the cutting switch. According to the electrosurgical operating instrument provided by the invention, the problems that in clinical blood vessel closing operation in related technologies, if coagulation is not completed, a cutting key is mistakenly touched to carry out push broach cutting, and serious consequences such as coagulation failure and intraoperative bleeding can be caused can be solved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more particularly to an electrosurgical instrument. Background Technology

[0002] As a type of electrosurgical instrument, the handheld vascular closure instrument requires not only opening and closing operations, but also coagulation and cutting operations, which are controlled by activation and cutting switches, respectively.

[0003] In traditional handheld vascular closure instruments, the activation switch and cutting switch are adjacent on the control handle and are both operated by the index finger. Therefore, if the cutting button is accidentally pressed before coagulation is completed and the knife is pushed to cut during clinical vascular closure, it can lead to serious consequences such as coagulation failure and intraoperative bleeding.

[0004] Therefore, traditional electrosurgical instruments need to be improved. Utility Model Content

[0005] This application provides an electrosurgical instrument that can solve the problem in related technologies where, during clinical vascular closure operations, if the cutting button is accidentally pressed before coagulation is completed, resulting in serious consequences such as coagulation failure and intraoperative bleeding.

[0006] This application provides an electrosurgical instrument, including a control handle, an axis assembly, and an end effector. The end effector includes a pusher and an electrode. The control handle includes a housing, an activation switch, and a cutting switch. The activation switch controls the electrosurgical unit to output energy to the electrode. When the operator holds the control handle, the activation switch and the cutting switch are located in areas touched by different fingers of the operator. The control handle also includes a drive assembly disposed inside the housing. The cutting switch is connected to the drive assembly, and the drive assembly is also connected to the pusher. By triggering the cutting switch, the drive assembly can drive the pusher to reciprocate along the axis of the pusher.

[0007] The electrosurgical instrument provided in this application has the following advantages: since the control handle includes a housing, an activation switch and a cutting switch, and the activation switch and the cutting switch are located in the areas touched by different fingers of the operator when the operator holds the control handle, the operator can trigger the activation switch and the cutting switch separately by different fingers when using the electrosurgical instrument.

[0008] Since the drive assembly is located inside the housing, the cutting switch is connected to the drive assembly, and the drive assembly is also connected to the pusher. Therefore, by triggering the cutting switch, the drive assembly can drive the pusher to reciprocate along the axis of the pusher to perform cutting and retraction operations.

[0009] Therefore, the electrosurgical instrument provided in this application can solve the problem in related technologies where, during clinical vascular closure operations, if the cutting button is accidentally pressed before coagulation is completed and the knife is pushed to cut, serious consequences such as coagulation failure and intraoperative bleeding may occur.

[0010] In some embodiments, the drive assembly includes a connector and a drive member connected together, the drive member being connected to the cutting switch and the connector being connected to the pusher.

[0011] By adopting the above solution, the cutting switch and the pusher can be connected together through the connector and the drive component, thereby enabling the connection between the cutting switch and the pusher while facilitating the setting of their relative positions.

[0012] In some embodiments, the driving member includes a driving gear rotatably connected to the housing, and the connecting member includes a connecting rack meshing with the driving gear. By triggering the cutting switch, the driving gear can be rotated relative to the housing, and the connecting rack and the pusher can be driven to reciprocate together along the axial direction of the pusher.

[0013] By adopting the above scheme, the drive gear can be rotated relative to the housing by triggering the cutting switch, and the connecting rack and pusher can be driven to reciprocate along the axis of the pusher to realize the cutting operation of the pusher.

[0014] In some embodiments, the housing is provided with a guide groove, and part of the cutting switch can slide within the guide groove to drive the drive gear to rotate relative to the housing.

[0015] By adopting the above solution, the cutting switch can be limited by the guide groove, thus preventing the cutting switch from shaking significantly when the drive gear rotates relative to the housing by triggering the cutting switch.

[0016] In some embodiments, the cutting switch includes a sliding portion and a pushing portion connected together, the sliding portion being connected to the drive gear and slidably passing through the guide groove, and the pushing portion being located outside the housing.

[0017] By adopting the above scheme, the structure of the cutting switch can be made simpler, making it easier to connect the cutting switch and the drive gear.

[0018] In some embodiments, the connector further includes a connecting portion connected to the connecting rack, and the connecting portion is sleeved on the shank of the pusher.

[0019] By adopting the above solution, it is easy to connect the connector and the pusher.

[0020] In some embodiments, the drive gear is configured as a sector gear.

[0021] By adopting the above solution, the transmission meshing of the drive gear and the connecting rack can be achieved, and the space occupied by the drive gear can be reduced.

[0022] In some embodiments, the drive includes an electric component that is electrically connected to the cutting switch.

[0023] By adopting the above solution, simply triggering the cutting switch will drive the pusher to reciprocate along the axis of the pusher via an electric component.

[0024] In some embodiments, the electric component includes an electric slide or a linear motor.

[0025] By adopting the above scheme, the structure of the electric components can be made relatively simple.

[0026] In some embodiments, when the operator holds the control handle, the cutting switch is located in the area reached by the operator's thumb; wherein, the trigger switch is located in the area reached by the operator's index finger.

[0027] By adopting the above scheme, the operator can pinch the trigger with at least one of the index, middle, ring, and little fingers. After the trigger has completed the clamping action, further pinching the trigger can trigger the activation switch. The two functions of clamping and activation can be achieved with a single pinching operation, making the operation simple and convenient. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the control handle and the blade of the pusher in one embodiment of the electrosurgical instrument of this application;

[0030] Figure 2 yes Figure 1 The diagram shows the internal structure of the control handle.

[0031] Figure 3 yes Figure 1 The front view of the control handle and the pusher bar shown;

[0032] Figure 4 yes Figure 3 The diagram shows the internal structure of the control handle.

[0033] Figure 5 yes Figure 3 The diagram shows the pusher blade after the blade holder has moved in the direction indicated by arrow M;

[0034] Figure 6 yes Figure 5 The diagram shows the internal structure of the control handle.

[0035] Figure 7 This is a schematic diagram of the control handle and the blade of the pusher in another embodiment of the electrosurgical instrument of this application;

[0036] Figure 8 This is a schematic diagram of the control handle and the blade of the pusher in another embodiment of the electrosurgical instrument of this application.

[0037] The markings in the diagram mean:

[0038] 100. Control handle;

[0039] 10. Shell;

[0040] 11. Guide groove;

[0041] 20. Trigger switch;

[0042] 30. Cutting switch;

[0043] 31. Sliding part; 32. Pushing part;

[0044] 40. Connecting parts;

[0045] 41. Connecting rack; 42. Connecting part;

[0046] 50. Driving components;

[0047] 60. Trigger;

[0048] 200. Tool holder. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0050] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0053] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0054] As a type of electrosurgical instrument, the handheld vascular closure instrument requires not only opening and closing operations, but also coagulation and cutting operations, which are operated by activation and cutting switches, respectively.

[0055] In traditional handheld vascular closure instruments, the activation switch and cutting switch are adjacent on the control handle and are both operated by the index finger. Therefore, if the cutting button is accidentally pressed before coagulation is completed and the knife is pushed to cut during clinical vascular closure, it can lead to serious consequences such as coagulation failure and intraoperative bleeding.

[0056] In view of this, this application provides an electrosurgical instrument. Since the control handle includes a housing, an activation switch and a cutting switch, and the activation switch and the cutting switch are located in areas touched by different fingers of the operator when the operator holds the control handle, the operator can trigger the activation switch and the cutting switch separately with different fingers when using the electrosurgical instrument.

[0057] Since the drive assembly is located inside the housing, the cutting switch is connected to the drive assembly, and the drive assembly is also connected to the pusher. Therefore, by triggering the cutting switch, the drive assembly can drive the pusher to reciprocate along the axis of the pusher to perform cutting and retraction operations.

[0058] Therefore, the electrosurgical instrument provided in this application can solve the problem in related technologies where, during clinical vascular closure operations, if the cutting button is accidentally pressed before coagulation is completed and the knife is pushed to cut, serious consequences such as coagulation failure and intraoperative bleeding may occur.

[0059] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the control handle 100 and the blade shank 200 of the electrosurgical instrument in one embodiment of this application. Figure 2 yes Figure 1 The diagram shows the internal structure of the control handle 100. Figure 3 yes Figure 1 The front view of the control handle 100 and the pusher bar 200 is shown. Figure 4 yes Figure 3 The diagram shows the internal structure of the control handle 100.

[0060] This application provides an electrosurgical instrument, including a control handle 100, a shaft assembly, and an end effector. The end effector includes a pusher and an electrode. The control handle 100 includes a housing 10, an activation switch 20, and a cutting switch 30. The activation switch 20 is used to control the electrosurgical host to output energy to the electrode. When the operator holds the control handle 100, the activation switch 20 and the cutting switch 30 are respectively located in areas touched by different fingers of the operator.

[0061] The trigger switch 20 can be a control signal output circuit used to send a signal to the electrosurgical host to control the electrosurgical host to deliver electrical energy to the electrodes to achieve the coagulation operation. In this embodiment, the trigger switch 20 can be located in the area touched by the operator's index finger, and the cutting switch 30 can be located in the area touched by the operator's thumb, so as to trigger the trigger switch 20 and the cutting switch 30 respectively. The cutting switch 30 can be located on the side of the housing 10, such as providing cutting switches 30 on both the left and right sides of the housing 10, so that the operator can operate using either the left or right hand.

[0062] The control handle 100 also includes a drive assembly, which is located inside the housing 10. The cutting switch 30 is connected to the drive assembly, and the drive assembly is also connected to the pusher. By triggering the cutting switch 30, the drive assembly can drive the pusher to reciprocate along the axis of the pusher.

[0063] The axis of the pusher can be parallel to the direction indicated by arrow M in the diagram, and the axis of the pusher is also parallel to the direction indicated by arrow N in the diagram. The direction indicated by arrow M is opposite to the direction indicated by arrow N. The direction indicated by arrow M in the diagram can be the direction from the proximal end of the electrosurgical instrument to the distal end of the electrosurgical instrument.

[0064] Triggering the cutting switch 30 causes the drive assembly to move the pusher in the direction indicated by arrow M in the figure, thereby achieving the cutting operation. Triggering the cutting switch 30 also causes the drive assembly to move the pusher in the direction indicated by arrow N in the figure, thereby achieving the retraction operation.

[0065] The electrosurgical instrument provided in this application embodiment includes a control handle 100 comprising a housing 10, an activation switch 20, and a cutting switch 30. When the operator holds the control handle 100, the activation switch 20 and the cutting switch 30 are located in areas touched by different fingers of the operator. Therefore, when using the electrosurgical instrument, the operator can trigger the activation switch 20 and the cutting switch 30 respectively with different fingers.

[0066] Since the drive component is located inside the housing 10, the cutting switch 30 is connected to the drive component, and the drive component is also connected to the pusher. Therefore, by triggering the cutting switch 30, the drive component can drive the pusher to reciprocate along the axis of the pusher to perform cutting and retraction operations.

[0067] Therefore, the electrosurgical instrument provided in this application can solve the problem in related technologies where, during clinical vascular closure operations, if the cutting button is accidentally pressed before coagulation is completed and the knife is pushed to cut, serious consequences such as coagulation failure and intraoperative bleeding may occur.

[0068] The electrosurgical instrument provided in this application embodiment can push and retract the blade by operating the cutting switch 30 and the drive assembly with the thumb without changing the position of the trigger 60.

[0069] The drive assembly includes a connector 40 and a drive component 50 connected to each other. The drive component 50 is connected to the cutting switch 30, and the connector 40 is connected to the pusher blade, so that the drive component 50 is connected to the pusher blade.

[0070] By adopting the above solution, the cutting switch 30 and the pusher can be connected together through the connector 40 and the drive unit 50, thereby enabling the connection between the cutting switch 30 and the pusher while facilitating the setting of the relative position between the cutting switch 30 and the pusher.

[0071] Please refer to Figures 1 to 6 , Figure 5 yes Figure 3 The diagram shows the pusher blade shank 200 after it has moved in the direction indicated by arrow M. Figure 6 yes Figure 5 The diagram shows the internal structure of the control handle 100.

[0072] In this embodiment, the driving component 50 includes a driving gear, which is rotatably connected to the housing 10. The connecting component 40 includes a connecting rack 41, which meshes with the driving gear. By triggering the cutting switch 30, the driving gear can rotate relative to the housing 10, and drive the connecting rack 41 and the pusher to reciprocate along the axis of the pusher.

[0073] By adopting the above scheme, the drive gear can be rotated relative to the housing 10 by triggering the cutting switch 30, and the connecting rack 41 and the pusher can be driven to reciprocate along the axis of the pusher to realize the cutting operation of the pusher.

[0074] For example, in the initial state, the positions of the drive gear, connecting rack 41, and pusher are as follows: Figure 3 and Figure 4 As shown, when the cutting switch 30 is triggered, causing the drive gear to rotate counterclockwise relative to the housing 10, the drive gear drives the connecting rack 41 and the pusher to move together in the direction indicated by arrow M in the figure. At this time, the positions of the drive gear, connecting rack 41, and pusher are as follows: Figure 5 and Figure 6 As shown.

[0075] When the tool needs to be retracted, simply trigger the cutting switch 30 to make the drive gear rotate clockwise relative to the housing 10. The drive gear will then drive the connecting rack 41 and the pusher to move together in the direction indicated by arrow N in the figure, thus realizing the tool retraction process.

[0076] It should be noted that a reset spring can be set. The reset spring is connected to the cutting switch 30. When the blade needs to be retracted, simply release the cutting switch 30, and the reset spring will automatically pull or push the cutting switch 30, causing the drive gear to rotate clockwise relative to the housing 10. The drive gear will then drive the connecting rack 41 and the pusher to move together in the direction indicated by arrow N in the figure, thereby realizing the automatic blade retraction process.

[0077] It is understandable that the return spring can also be directly connected to the drive gear, connecting rack 41, or pusher. The return spring can also be connected to the housing 10.

[0078] Optionally, the housing 10 is provided with a guide groove 11, in which part of the cutting switch 30 can slide to drive the drive gear to rotate relative to the housing 10.

[0079] This configuration allows the cutting switch 30 to be limited by the guide groove 11, preventing the cutting switch 30 from shaking significantly when the drive gear rotates relative to the housing 10 by triggering the cutting switch 30.

[0080] Optionally, the cutting switch 30 includes a sliding part 31 and a pushing part 32 connected to each other. The sliding part 31 is connected to the drive gear and is slidably disposed in the guide groove 11. The pushing part 32 is located outside the housing 10.

[0081] This design simplifies the structure of the cutting switch 30 and facilitates the connection between the cutting switch 30 and the drive gear.

[0082] Please continue to refer to this. Figures 1 to 6 In this embodiment, the connector 40 further includes a connecting part 42, which is connected to the connecting rack 41 and is sleeved on the pusher bar 200.

[0083] By adopting the above scheme, it is easy to connect the connector 40 and the pusher.

[0084] Optionally, the connecting part 42 and the connecting rack 41 can be integrally formed. Alternatively, the connecting part 42 and the connecting rack 41 can be connected together by means of bonding, welding, screw connection or bolt connection.

[0085] Optionally, the drive gear is configured as a sector gear.

[0086] This configuration not only enables the transmission meshing of the drive gear and the connecting rack 41, but also minimizes the space occupied by the drive gear.

[0087] When using the electrosurgical instrument provided in the above embodiment, the trigger 60 is first squeezed, then the activation switch 20 is triggered, and then the cutting switch 30 is triggered.

[0088] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the control handle 100 and the blade shank 200 of the electrosurgical instrument in another embodiment of this application.

[0089] Unlike the above embodiments, in another embodiment, the drive unit 50 includes an electric component that is electrically connected to the cutting switch 30.

[0090] By adopting the above scheme, simply triggering the cutting switch 30 will drive the pusher to reciprocate along the axis of the pusher via the electric components.

[0091] It should be noted that the cutting switch 30 can be located at the top, near the end, or side of the housing 10.

[0092] For example, two limit switches can be installed inside the housing 10. When the cutting switch 30 is triggered, causing the electric component to move the pusher to the farthest point in the direction indicated by arrow M in the figure, one of the limit switches will be triggered. Then the electric component will start to move the pusher in the direction indicated by arrow N in the figure until the other limit switch is triggered, after which the pusher stops moving, thus realizing the retraction process.

[0093] Optionally, the electric components include an electric slide or a linear motor.

[0094] This design allows for a simpler structure for the electric components.

[0095] Figure 8 This is a schematic diagram of the control handle 100 and the blade shank 200 of the electrosurgical instrument in another embodiment of this application.

[0096] Unlike the embodiments described above, in some embodiments, when the operator holds the control handle 100, the cutting switch 30 is located in the area reached by the operator's thumb; wherein, the control handle 100 includes a trigger 60, and the operator can pinch the trigger 60 with at least one of the index, middle, ring, and little fingers so that after the trigger 60 has completed the clamping of the jaws, further pinching the trigger 60 can trigger the activation switch 20. The two functions of jaw closure and activation can be achieved through a single pinching operation, which is simple and convenient to operate.

[0097] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An electrosurgical instrument, characterized by The control handle (100) comprises a shell (10), a trigger switch (20) and a cutting switch (30), the trigger switch (20) is used for controlling the energy output of an electrosurgical master to the electrode, when an operator holds the control handle (100), the trigger switch (20) and the cutting switch (30) are respectively located in the areas reached by different fingers of the operator; the control handle (100) further comprises a driving assembly, the driving assembly is arranged in the interior of the shell (10), the cutting switch (30) is connected with the driving assembly, and the driving assembly is further connected with the push knife, so that the driving assembly drives the push knife to reciprocate along the axis direction of the push knife by triggering the cutting switch (30).

2. An electrosurgical instrument according to claim 1, characterised in that, The driving assembly comprises a connecting piece (40) and a driving piece (50) connected with each other, the driving piece (50) is connected with the cutting switch (30), and the connecting piece (40) is connected with the push knife.

3. An electrosurgical instrument according to claim 2, wherein, The driving piece (50) comprises a driving gear, the driving gear is rotationally connected with the shell (10), the connecting piece (40) comprises a connecting rack (41), the connecting rack (41) is engaged with the driving gear, the driving gear is driven to rotate relative to the shell (10) by triggering the cutting switch (30), and the connecting rack (41) and the push knife are driven to reciprocate along the axis direction of the push knife.

4. An electrosurgical instrument according to claim 3, characterised in that, The shell (10) is provided with a guide groove (11), part of the cutting switch (30) can slide in the guide groove (11) to drive the driving gear to rotate relative to the shell (10).

5. An electrosurgical instrument according to claim 4, characterised in that, The cutting switch (30) comprises a sliding part (31) and a pushing part (32) connected with each other, the sliding part (31) is connected with the driving gear, and the sliding part (31) is slidably arranged in the guide groove (11), and the pushing part (32) is located outside the shell (10).

6. An electrosurgical instrument according to claim 3, wherein, The connecting piece (40) further comprises a connecting part (42), the connecting part (42) is connected with the connecting rack (41), and the connecting part (42) is sleeved on the knife rod (200) of the push knife.

7. An electrosurgical instrument according to claim 3, wherein, The driving gear is provided as a sector gear.

8. An electrosurgical instrument according to claim 2, characterised in that, The driving piece (50) comprises an electric driving part, and the electric driving part is electrically connected with the cutting switch (30).

9. An electrosurgical instrument according to claim 8, characterised in that, The electric driving part comprises an electric sliding platform or a linear motor.

10. An electrosurgical instrument according to any one of claims 1 to 9, wherein, When the operator holds the control handle (100), the cutting switch (30) is located in the area reached by the thumb of the operator; wherein the trigger switch (20) is located in the area reached by the index finger of the operator.

Images