Surgical instrument and electrosurgical system

Abstract

The application provides a surgical instrument and an electrosurgical system. The surgical instrument is used in the electrosurgical system and comprises a tube connector, an insulator, a driver mounted at a distal end of the tube connector, and an execution member mounted at a distal end of the driver. The insulator comprises a root integrally connected to the tube connector and a deformable tube. The tube is connected to one end of the root close to the driver. When performing a surgery, the tube can extend towards the driver and at least wrap the driver. When cleaning the surgical instrument, the tube can be retracted away from the driver and wrapped outside the tube connector, so that the driver is exposed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a surgical instrument and an electrosurgical system. BACKGROUND

[0002] The electrosurgical system is applied to minimally invasive surgery, robot-assisted surgery, etc. Various electrosurgical instruments are used in surgery, including an energy generator capable of generating high-frequency power, an execution member made of metal material, and a body unit for carrying and installing the execution member. The execution member cuts and cauterizes human tissues in a lesion area in an electrified state.

[0003] To improve the structural strength of the electrosurgical instrument and meet the strength requirements of high-load surgery, the body unit of some electrosurgical instruments includes metal parts, such as a driver for controlling the attitude of the execution member. An insulator is provided outside the body unit to prevent the metal parts from contacting and burning human tissues in non-lesion areas.

[0004] The existing insulator is disposable. Before cleaning such an electrosurgical instrument, the insulator needs to be removed. After cleaning, a brand new insulator is provided on the body unit for use in the next surgery. The installation of a brand new insulator for each surgery increases the preparation time before surgery and the cost of surgery. SUMMARY

[0005] In view of this, the present application provides a surgical instrument of an electrosurgical system with lower use cost and higher use convenience.

[0006] The surgical instrument provided by the present application includes a pipe connector, an insulator, a driver installed at the distal end of the pipe connector, and an execution member installed at the distal end of the driver. The insulator includes a root connected to the pipe connector and a deformable pipe. The pipe is connected to one end of the root near the driver. During surgery, the pipe can extend towards the driver and at least cover the driver. When cleaning the surgical instrument, the pipe can be retracted away from the driver and covered on the outside of the pipe connector, so that the driver is exposed.

[0007] In one embodiment, the end of the pipe away from the root can be outwardly circumferentially flanged. When cleaning the surgical instrument, the pipe wall is curled outwardly in its entirety and forms a ring structure around the root.

[0008] In one embodiment, the end of the pipe away from the root can be outwardly circumferentially flanged. When cleaning the surgical instrument, the pipe wall is curled outwardly in its entirety and forms a ring structure around the root.

[0009] In one of the embodiments, the root is a tube body sleeved with the pipe fitting, wherein: the inner peripheral wall of the root is fixedly bonded with the outer peripheral wall of the pipe fitting; and / or, the wall thickness of the root is greater than that of the rolled tube.

[0010] In one of the embodiments, the root is a first rubber tube, and the rolled tube is a second rubber tube, and the sulfur content of the first rubber tube is greater than that of the second rubber tube.

[0011] In one of the embodiments, the rolled tube is formed with a stress relief portion fixedly connected to the pipe fitting at the end close to the root, and the stress relief portion and the inner peripheral wall of the rolled tube are connected through a chamfer transition.

[0012] In one of the embodiments, the surgical instrument further comprises a first step formed at the proximal end of the pipe fitting and a second step protruding from the pipe fitting, and the first step and the second step stop the proximal end and the distal end of the root, respectively.

[0013] In one of the embodiments, the insulator is provided with a waste discharge hole penetrating through the inner cavity of the rolled tube and the outside of the insulator, and the waste discharge hole penetrates through the end of the rolled tube close to the root.

[0014] In one of the embodiments, the root is integrally formed with the rolled tube; and / or, the root is a tube body sleeved with the pipe fitting, and the root is detachably sleeved with the pipe fitting.

[0015] In one of the embodiments, the rolled tube comprises a deformable corrugated tube section connected to the end of the root close to the driver, wherein:

[0016] The corrugated tube section has an extension deformation amount, and the extension direction of the corrugated tube section is the length direction of the pipe fitting; and / or,

[0017] The corrugated tube section has a bending deformation amount, and the corrugated tube section can bend to change the orientation of the distal end of the rolled tube by deviating from the center line of the pipe fitting.

[0018] The application also provides an electrosurgical system comprising the surgical instrument described above.

[0019] Compared with the prior art, the surgical instrument of the application has at least the following beneficial effects:

[0020] The insulator can be reused in multiple surgeries. When cleaning surgical instruments after surgery, it is not necessary to remove the insulator from the fitting. Simply apply a force away from the actuator to the tube to deform it and expose the actuator. After cleaning, simply apply a force towards the actuator to restore the tube to the state where the actuator is fitted inside. The surgical instrument can then be used for the next surgery. This reduces the consumption of insulators, eliminates the need for multiple removal and refitting of insulators, lowers the cost of using surgical instruments, and makes switching between surgical instruments easier and more time-saving, thus shortening preoperative preparation time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first state of a surgical instrument according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the second state of a surgical instrument according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of an insulator according to an embodiment of the present invention;

[0024] Figure 4 for Figure 2 A schematic diagram of a partial structure of the surgical instrument shown;

[0025] Figure 5 This is a schematic diagram of the second state of a surgical instrument according to another embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Surgical instrument; 10. Pipe fitting; 11. Adapter; 12. Base; 101. First step; 102. Second step; 20. Actuator; 30. Actuator; 40. Insulator; 41. Root; 42. Tube; 43. Stress relief section. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0030] As used herein, the terms "distal" and "proximal" are directional terms that are commonly used in the field of interventional medical devices, with "distal" referring to the end of a device component that is farthest from the operator and closest to the patient during a procedure, and "proximal" referring to the end of a device component that is closest to the operator and farthest from the patient during a procedure.

[0031] The present application provides a surgical instrument 100 applied to an electrosurgical system, and also provides an electrosurgical system comprising the surgical instrument 100. Electrosurgery is a surgical therapy that burns and coagulates human tissues by high-frequency energy, and is currently applied to minimally invasive surgery, robot-assisted surgery, etc. During the implementation of a surgical procedure, the implement 30 of the surgical instrument 100 is powered and directly contacts the tissue of a lesion area of a human body, thereby conducting heat to the lesion tissue.

[0032] Referring to Figure 1 The surgical instrument 100 provided by the present application comprises an energy generator (not shown in the figure), a support tube (not shown in the figure), a tube connector 10 mounted at the distal end of the support tube, a driver 20 mounted at the distal end of the tube connector 10, and an implement 30 mounted at the distal end of the driver 20. During a surgical procedure, the distal end of the support tube is the end of the support tube closest to the lesion of a patient, the distal end of the tube connector 10 is the end of the tube connector 10 farthest from the support tube, the distal end of the driver 20 is the end of the driver 20 farthest from the tube connector 10, and the tube connector 10, the driver 20 and the implement 30 are sequentially arranged in the direction close to the lesion of the patient.

[0033] The energy generator can generate high-frequency (0.3-5MHz) power with a specific waveform and specific load, and transmit the energy generated thereby to the implement 30, so that the temperature of the implement 30 is raised. In the case that the implement 30 contacts the tissue of a lesion area of a human body, the implement 30 performs coagulation, cutting and other operations on the lesion tissue;

[0034] A control line is arranged in the support tube, and the control line is used to realize: 1) electrical connection between the driver 20 and a control unit of the electrosurgical system; 2) electrical connection between the implement 30 and the control unit of the electrosurgical system; the control unit sends action instructions to the implement 30 and the driver 20 through the control line;

[0035] Further, an energy transmission line is arranged in the support tube, and the energy transmission line is used to realize electrical connection between the energy generator and the implement 30. The energy generator transmits the power generated by the energy generator to the implement 30 in the form of electrical energy through the energy transmission line, so that the implement 30 is electrified and heated.

[0036] The pipe joint 10 is used as a transition connection between the driver 20 and the support tube, and is used to carry the driver 20. The control line extends out of the support tube and passes through the inside of the pipe joint 10 to be connected to the driver 20 and the implement 30. As an embodiment, the pipe joint 10 is a tubular member and is coaxially connected to the support tube.

[0037] The driver 20 is used to control and change the pose of the implement 30. During the operation, the implement 30 can change the orientation and angle under the control of the driver 20, specifically, the inclination angle of the implement 30 relative to the axis of the pipe joint 10 is changed. Therefore, the implement 30 has higher degrees of freedom, so that the lesion tissue can be more accurately operated.

[0038] The implement 30 directly contacts the lesion tissue in the electrified state, and the temperature of the implement 30 meets the temperature requirement of the electrical cutting and coagulation of the electrosurgery. The functions and types of the implements of surgical instruments with different functions are different. Figures 1-2 In the shown surgical instrument 100, the implement 30 is a pair of scissors blades, and the driver 20 can switch the open and close states of the scissors blades. This kind of surgical instrument 100 is called an electric bending scissors.

[0039] In some embodiments, the pipe joint 10 includes an adapter 11 and a base 12. Referring to Figure 1 The adapter 11 is fixedly connected to the distal end of the support tube, and the base 12 is fixedly connected to the distal end of the adapter 11, that is, the end of the adapter 11 away from the support tube. The driver 20 is installed at the end of the base 12 away from the adapter 11. Optionally, the adapter 11 and the base 12 are coaxially fixedly connected.

[0040] The force of the driver acting on the implement and the force of the lesion tissue acting on the implement form the load of the surgical instrument. In some surgical situations, the implement needs to exert a larger force on the lesion tissue, and the load requirement of this kind of surgical instrument is higher. In order to make the surgical instrument bear a larger load without being damaged and failed too early, improve the structural strength and reliability of the surgical instrument, the driver is a metal member, or the driver contains parts made of metal materials. In addition, the pipe joint also uses certain metal parts according to the load requirement, for example, the base for installing the driver.

[0041] The structure of the driver and the like is composed of metal parts or is made of metal material, which overcomes the defect that the load of the surgical instrument is limited due to insufficient material mechanical properties, but brings new troubles for the use of the surgical instrument: in the implementation of the surgery, in addition to the electrically contacting lesion tissue by the implement, the other non- implement parts such as the driver also have the possibility of electrically contacting non- lesion tissue, which makes the surgical instrument have the risk of accidentally burning the non- lesion tissue.

[0042] In view of this, the surgical instrument 100 provided by the application further comprises an insulating part, as shown in Figures 1-5 The insulating part comprises a root 41 connected with a pipe 42, the root 41 is connected with the pipe connector 10 as a whole, and the pipe 42 is connected to the distal end of the root 41. As shown in Figure 1 and Figure 2 In some embodiments, the root 41 is connected with the adapter 11, and the pipe 42 is connected to one end of the root 41 close to the driver 20, and the pipe 42 can be deformed to be elongated or shortened, Figure 1 and Figure 2 respectively show the first state of the surgical instrument 100 when performing surgery and the second state when being cleaned, and the difference between the two is the length and shape of the pipe 42.

[0043] Figure 1 The surgical instrument 100 shown in the figure, wherein the shape of the insulating part is as shown in Figure 3 The left end and the right end of the insulating part shown in Figure 3 The left end and the right end of the insulating part shown in

[0044] In the case that the proximal end of the pipe 42 is connected to the root 41, the operator can apply a force to the pipe 42 in a direction pointing to the driver 20 to drive the distal end of the pipe 42 to move close to the driver 20, and make the pipe 42 elongate towards the driver 20 until the pipe 42 is at least sleeved on the driver 20; or the operator can apply a force to the pipe 42 in a direction away from the driver 20 to drive the distal end of the pipe 42 to move away from the driver 20, and make the pipe 42 contract away from the driver 20 until the pipe 42 is shortened to be sleeved outside the pipe connector 10, so as to expose the driver 20 and the implement 30.

[0045] In some embodiments, the distal end of the pipe 42 can be outwardly turned up within the circumferential range of itself, and the pipe wall of the pipe 42 can continue to be curled and deformed after the distal end of the pipe 42 is outwardly turned up, so as to switch the surgical instrument 100 to Figure 2In the state shown, the tube wall of the rolled tube 42 is curled outwardly in the whole circumference to form a ring structure around the root 41 and the adapter 11, at which time the operator can clean the surgical instrument 100, for example, immersing the implement 30 and the driver 20 in a cleaning liquid for ultrasonic oscillation cleaning.

[0046] A sectional view of the surgical instrument 100 in the second state is shown in Fig. 4. Figure 4 As shown, the axis of the adapter 10 is in the sectional plane, and the generatrix of the rolled tube 42 forms connected spiral segments and a straight segment, the spiral segments being away from the end of the straight segment corresponding to the distal end of the rolled tube 42, and the straight segment being away from the end of the spiral segment corresponding to the proximal end of the rolled tube 42. If the centers of all the spiral segments of the generatrix of the rolled tube 42 are marked, the centers of the spiral segments are arranged in the circumferential direction of the adapter 10 around the adapter 10.

[0047] The surgical instrument 100 is shown in the state of Fig. 3. Figure 1 In the state shown, the operator can push the distal end of the rolled tube 42 to the right to make the distal end of the rolled tube 42 flange outwardly, and then the operator continues to apply a force to the inner wall of the rolled tube 42 with the direction of the force pointing to the adapter 11 and the support tube, so that the tube wall of the rolled tube 42 is curled outwardly until the implement 30 and the driver 20 are exposed; the surgical instrument 100 is shown in the state of Fig. 2. Figure 2 In the state shown, the operator can push the tube wall of the rolled tube 42 to the left to make the rolled tube 42 elongate and gradually restore to a tubular structure, during which the distal end of the rolled tube 42 is close to the driver 20, until the surgical instrument 100 restores to the state of Fig. 1. Figure 1 In the state shown, the base 12, the driver 20 and a part of the implement 30 are again sleeved by the rolled tube 42.

[0048] It can be understood that the telescopic deformation of the rolled tube 42 is not limited to the curling of the tube wall of the rolled tube 42. Referring to Fig. 6, Figure 5 In some embodiments, in the case that the operator just applies a pushing force to the distal end of the rolled tube 42 with the direction of the force pointing to the adapter 11 and the support tube, the distal end of the rolled tube 42 can also be flanged outwardly in the circumferential direction of the rolled tube 42, but after the distal end of the rolled tube 42 is flanged, the tube wall of the rolled tube 42 does not curl but directly bends to form a backfolding segment away from the driver 20, and the bending of the tube wall of the rolled tube 42 is also in the circumferential direction of the rolled tube 42, thereby forming an annular fold around the adapter 10.

[0049] As shown in Fig. 6, Figure 5 It can be seen that the backfolding segment of the rolled tube 42 is the part between the distal end of the rolled tube 42 and the annular fold, and the backfolding segment sleeves the root 41 and the adapter 11. After the distal end of the rolled tube 42 is flanged outwardly, the operator continues to apply a force to the rolled tube 42 with the direction of the force pointing to the adapter 11 and the support tube, so that the annular fold is continuously away from the driver 20, during which the length of the backfolding segment gradually increases, until the surgical instrument 100 switches to the state of Fig. 2.Figure 5 The final execution member 30, the driver 20 and the base 12 are exposed in the state shown.

[0050] In another embodiment not shown in the figure, the pipe 42 comprises a bellows section capable of elastic deformation, the bellows section is connected to the root 41 at the end close to the driver 20, the elastic deformation direction of the bellows section is the length direction of the pipe joint 10, the bellows section can be elongated to drive the distal end of the pipe 42 to move close to the driver 20, or the bellows section can be compressed to drive the distal end of the pipe 42 to move away from the driver 20.

[0051] Before the operation, the operator can apply a force to the pipe 42 in the direction pointing to the driver 20 to elongate the bellows section until the pipe 42 sets the driver 20 and the base 12 inside; after the operation, the operator can apply a force to the pipe 42 in the direction away from the driver 20 to compress the bellows section until the distal end of the pipe 42 is retracted to the state of setting the adapter 11, when cleaning the surgical instrument 100, the pipe wall of the pipe 42 is arranged in a corrugated shape in the axial direction of the pipe joint 10.

[0052] Further, on the basis of the elastic deformation amount of the bellows section, the bellows section also has a bending deformation amount, the center line of curvature of the bent bellows section is not parallel to the center line of the pipe joint 10, that is, the axis of the pipe joint 10, so that the bellows section can deviate from the axis of the pipe joint 10 after bending, thereby changing the orientation of the distal end of the pipe 42, the most direct effect is that an included angle is generated between the center line of the opening of the distal end of the pipe 42 and the center line of the pipe joint 10.

[0053] The bellows section has a bending deformation amount, the effect generated is that the orientation of the distal end of the pipe 42 can be changed synchronously with the pose change of the execution member 30, ensuring that the execution member 30 can smoothly change its orientation and angle under the control of the driver 20, reducing the interference and limitation of the distal end of the pipe 42 on the pose change of the execution member 30, in addition, the orientation of the distal end of the pipe 42 changing along with the movement of the execution member 30 can also inhibit the tissue fluid from entering the insulator 40 through the opening of the distal end of the pipe 42 and the execution member 30.

[0054] In some embodiments, the insulator 40 is provided with a waste discharge hole (not shown in the figure) penetrating through the inner cavity of the pipe 42 and the outside of the insulator 40, the waste discharge hole penetrates through the inner wall of the end of the pipe 42 close to the root 41, that is, the opening of the waste discharge hole formed in the inner wall of the pipe 42 is located at the transition connection between the pipe 42 and the root 41.

[0055] In this way, after the surgical instrument 100 is cleaned, the waste liquid impurities remaining in the inner cavity of the pipe 42 can be discharged from the inner cavity of the pipe 42 through the waste discharge hole, thereby improving the cleanliness of the surgical instrument 100, preventing the breeding of bacteria in the surgical instrument 100, and making the cleaning and maintenance of the surgical instrument 100 easier.

[0056] In some embodiments, the root 41 is a tubular structure, and the root 41 is fixedly sleeved on the pipe connector 10, and the inner circumferential wall of the root 41 is fixedly bonded with the outer circumferential wall of the pipe connector 10 to be integrated, so that the root 41 and the pipe connector 10 are relatively fixed when the operator applies force to the rolled pipe 42, preventing the root 41 from falling off the pipe connector 10, and also preventing the insulation body 40 from loosening during the operation, thereby improving the durability and reliability of the surgical instrument 100.

[0057] It can be understood that in other embodiments, the root 41 can also be connected with the pipe connector 10 in other ways, for example, the root 41 and the pipe connector 10 are fixedly formed by a gluing process; or the inner circumferential wall of the root 41 and the outer circumferential wall of the pipe connector 10 form a concave-convex fit, such as the inner circumferential wall of the root 41 being provided with a convex structure embedded in the pipe connector 10, or the outer circumferential wall of the pipe connector 10 being provided with a convex structure embedded in the root 41.

[0058] In some embodiments, the insulation body 40 is one of a silica gel member or a rubber member, the wall thickness of the root 41 is greater than the wall thickness of the rolled pipe 42, and the root 41 is integrally formed with the rolled pipe 42.

[0059] In this way, the production cost of the insulation body 40 is reduced, and the root 41 and the rolled pipe 42 can also obtain different mechanical properties, respectively. The wall thickness of the root 41 being greater than the wall thickness of the rolled pipe 42 can ensure that the root 41 and the pipe connector 10 form a tight fit, thereby improving the connection strength of the root 41 and the pipe connector 10, and also making the rolled pipe 42 more easily deformed, so that the operator can more easily adjust the length of the rolled pipe 42 by applying force to the rolled pipe 42.

[0060] It can be understood that in other embodiments, the insulation body 40 can also be made of other materials, for example, the root 41 is made of TPU, and the rolled pipe 42 is made of silica gel. The root 41 made of TPU can increase the friction between the root 41 and the pipe connector 10.

[0061] The insulation body 40 can also be integrally formed of rubber. When the insulation body 40 is a rubber tube, in order to make the root 41 and the rolled pipe 42 obtain different mechanical properties, respectively, different vulcanization processes can be used to treat the root 41 and the rolled pipe 42, respectively. The sulfur content of the root 41 is greater than that of the rolled pipe 42, so that the hardness and rigidity of the root 41 are increased, and the rolled pipe 42 is more easily deformed relative to the root 41.

[0062] In some embodiments, the root 41 is detachably connected to the pipe connector 10, for example, when the root 41 is a tubular structure, the root 41 is detachably sleeved on the pipe connector 10.

[0063] In this way, when the insulator 40 is damaged or disconnected from the pipe connector 10, the original insulator 40 can be removed and a new insulator 40 can be connected to the pipe connector 10.

[0064] In some embodiments, the stress relief portion 43 is formed at one end of the pipe 42 close to the root 41, the stress relief portion 43 is fixedly connected to the pipe connector 10, and a chamfered transition connection is formed between the stress relief portion 43 and the inner peripheral wall of the pipe 42. The chamfer can be an inclined angle or a rounded angle.

[0065] Referring to FIG. 1, the surgical instrument 100 includes a pipe 42, a root 41, a stress relief portion 43, a pipe connector 10, and an adapter 11. Figure 4 , Figure 4 The root 41 is a tubular structure that sleeves the adapter 11 of the pipe connector 10, and the stress relief portion 43 is a ring-shaped rib protruding from the inner wall of the insulating pipe. The ring-shaped rib is equivalent to the boundary between the pipe 42 and the root 41, and at this time, the entire pipe wall of the pipe 42 is in a crimped state.

[0066] The stress relief portion 43 has the following effects:

[0067] 1) The stress relief portion 43 can be used as a reference to determine whether the pipe wall of the pipe 42 is sufficiently crimped. When the pipe 42 is crimped to the point where the stress relief portion 43 is about to be separated from the pipe connector 10, the operator stops applying a pushing force to the pipe wall of the pipe 42, thereby preventing the insulating pipe from being excessively crimped and avoiding disconnection of the root 41 and the pipe connector 10;

[0068] 2) The transition chamfer between the stress relief portion 43 and the inner wall of the pipe 42 can avoid stress concentration at the connection between the root 41 and the pipe connector 10, and also avoid disconnection of the root 41 and the pipe connector 10.

[0069] Further, the surgical instrument 100 further includes a first step 101 formed at the proximal end of the pipe connector 10 and a second step 102 protruding from the pipe connector 10. The first step 101 and the second step 102 are spaced apart along the axial direction of the pipe connector 10. The first step 101 can stop the proximal end of the root 41, and the second step 102 can stop the distal end of the root 41. Therefore, the displacement freedom of the root 41 in the axial direction of the pipe connector 10 is limited by the first step 101 and the second step 102.

[0070] Optionally, the adapter 11 is inserted into the distal end of the support pipe, the outer diameter of the distal end of the support pipe is greater than the outer diameter of the adapter 11, and the distal end of the support pipe is used to form the first step 101. The outer peripheral wall of the adapter 11 protrudes the second step 102. Along the axial direction of the adapter 11, the portion of the adapter 11 between the first step 101 and the second step 102 is sleeved by the root 41, and the root 41 is clamped by the first step 101 and the second step 102.

[0071] Optionally, the second step 102 stops the stress relief portion 43.

[0072] The surgical instrument and the electrosurgical system provided by the application realize repeated use of the insulator in multiple operations, and the insulator does not need to be removed from the pipe joint when the surgical instrument is cleaned after operation. Only a force in a direction away from the driver needs to be applied to the pipe to deform the pipe and expose the driver. After cleaning, only a force in a direction pointing to the driver needs to be applied to the pipe to restore the pipe to a state of sleeving the driver inside, so that the surgical instrument can be used in the next operation. Therefore, the consumption of the insulator is reduced, the operation of removing and reassembling the insulator multiple times is saved, the use cost of the surgical instrument is reduced, the state switching of the surgical instrument is easier and more time-saving, and therefore the preoperative preparation time can be shortened.

[0073] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, but it should be understood that any combination of the technical features that does not result in a contradiction falls within the scope of the present disclosure.

[0074] Those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application. Any appropriate changes and modifications made to the above embodiments within the spirit and principles of the present application fall within the scope of the present application.

Claims

1. A surgical instrument comprising a connector (10), a driver (20) mounted at a distal end of the connector (10), and an implement (30) mounted at a distal end of the driver (20); characterized in that the surgical instrument further comprising an insulator (40), the insulator (40) comprising a root (41) connected to the connector (10), and a deformable tube (42) connected to the root (41) at a side close to the driver (20); the insulator (40) being provided with a waste hole penetrating through an inner cavity of the tube (42) and an outer part of the insulator (40), the waste hole penetrating through a side of the tube (42) close to the root (41); when the surgical instrument is cleaned, the tube (42) can be contracted away from the driver (20) and sleeved outside the connector (10), so that the driver (20) is exposed; a side of the tube (42) away from the root (41) can be outwardly circumferentially flanged, when the surgical instrument is cleaned, a tube wall of the tube (42) is curled outwardly in a whole circumference and forms a ring structure surrounding the root (41); alternatively, a side of the tube (42) away from the root (41) can be outwardly circumferentially flanged, when the surgical instrument is cleaned, a tube wall of the tube (42) is outwardly bent in a whole circumference to form a ring-shaped fold and sleeves the root (41).

2. The surgical instrument of claim 1, wherein, the root (41) is a tube body sleeving the connector (10), wherein: an inner circumferential wall of the root (41) is fixedly bonded with an outer circumferential wall of the connector (10) as a whole; and / or, a wall thickness of the root (41) is greater than a wall thickness of the tube (42); and / or, the root (41) is a first rubber tube, and the tube (42) is a second rubber tube, a sulfur content of the first rubber tube is greater than a sulfur content of the second rubber tube.

3. The surgical instrument of claim 1, wherein, a side of the tube (42) close to the root (41) is formed with a stress relieving portion (43) fixedly connected to the connector (10), and the stress relieving portion (43) is connected to an inner circumferential wall of the tube (42) through a chamfer transition.

4. The surgical instrument of claim 3, wherein, the surgical instrument further comprising a first step (101) formed at a proximal end of the connector (10) and a second step (102) protruding from the connector (10), the first step (101) and the second step (102) respectively stop a proximal end and a distal end of the root (41).

5. The surgical instrument of claim 1, wherein, the root (41) is integrally formed with the tube (42); and / or, the root (41) is a tube body sleeving the connector (10), and the root (41) is detachably sleeved to the connector (10).

6. An electrosurgical system, characterized by, comprising the surgical instrument according to any one of claims 1-5.

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