Operating mechanism and minimally invasive electrosurgical operating instrument

Abstract

The utility model discloses an operating mechanism and a minimally invasive electrosurgical operating instrument, and relates to the field of minimally invasive interventional instruments. The operating mechanism comprises a handle, a linkage assembly and a locking assembly. The handle is provided with a loading channel. The linkage assembly comprises a control component, a positioning rod piece, an execution component and a control line. The locking assembly comprises an inner ball body and an outer ball sleeve. Through the operation mechanism, a user can flexibly adjust the control end of the operation mechanism to adjust the movement change of the execution end, so that the intervention component can be universally deflected to be close to the focus of an affected part, then the position and posture of the intervention component are locked by using the locking assembly, the adjustment flexibility and stability are good, and the focus of the affected part is treated through the intervention component; for example, accurate electrosurgical energy is applied to an affected part, the operation action process is flexible, convenient, safe, stable and reliable, and operation fatigue can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of minimally invasive interventional instrument, concretely relates to an operating mechanism and minimally invasive electric surgical instrument. BACKGROUND

[0002] In actual clinical scenarios, due to the structural characteristics of the straight rod of the traditional high-frequency surgical instrument, the doctor is affected by the chopstick effect during the operation, and many surgical sites cannot be directly touched. In this case, the doctor generally needs to adjust the operation posture or frequently lift the shoulder, which can easily cause the operator to be tired or cause an occupational disease, and a surgical access may need to be made on the surface of the patient's skin to complete the operation, increasing the risk of the incision. For example, in the clinical minimally invasive surgery of hepatobiliary surgery, a large liver cyst on the diaphragmatic surface of the left inner lobe of the liver wants to break the cyst wall at the bottom of the pit, and the ordinary straight rod monopolar instrument cannot contact the lesion at the site. The contact stability is poor. In the related art, the surgical instrument has the defects of poor adjustment flexibility and stability, inconvenient operation, and easy operation fatigue. SUMMARY

[0003] To solve the technical problems in the background art, the utility model provides an operating mechanism, comprising:

[0004] A handle has a loading channel;

[0005] A linkage assembly includes a control member, a positioning rod, an execution member, and a control line. The proximal end of the control member is attached to the loading channel. The distal end of the control member is fixedly connected to one end of the positioning rod. The distal end of the execution member is fixedly connected to the other end of the positioning rod. The control member and the execution member are respectively provided as a flexible joint group composed of a plurality of joint units connected in series. The control line is provided with at least two control lines. The plurality of joint units of the control member and the plurality of joint units of the execution member are connected through all the control lines, so that the control member and the execution member are connected. All the control lines are arranged in the positioning rod. The distal end of the execution member is adapted to attach an interventional member;

[0006] A locking assembly includes an inner sphere and an outer spherical sleeve. The inner sphere is fixedly connected to the handle. The outer spherical sleeve is movably connected to the outside of the inner sphere. The inner sphere and the outer spherical sleeve are ball-hinged. The proximal end of the control member is movably arranged in the inner sphere. The distal end of the control member is movably arranged in the outer spherical sleeve and extends through the locking assembly to connect with the positioning rod. Under the action of an external force, the outer spherical sleeve is adapted to abut and lock the inner sphere, so that the inner sphere and the outer spherical sleeve can jointly lock the movement posture of the control member.

[0007] As a preferred technical scheme, the linkage assembly further comprises a positioning sleeve fixedly arranged between the distal end of the control member and the proximal end of the positioning rod, and the proximal end of the positioning sleeve is movably sleeved in the outer spherical sleeve, and all the control lines are arranged in the positioning sleeve.

[0008] As a preferred technical scheme, the linkage assembly further comprises a constraint column movably arranged in the positioning sleeve, and the constraint column is provided with a first constraint hole and a second constraint hole arranged apart from each other, the first constraint hole is arranged in the axial direction of the constraint column, the first constraint hole is suitable for slidingly arranging a guide wire or an interventional instrument, and the second constraint hole is arranged outside the first constraint hole in a central symmetry mode, and the second constraint hole is movably arranged with the control line.

[0009] As a preferred technical scheme, the control member comprises a control connecting unit, a control joint unit and a control connecting unit arranged in sequence, the control connecting unit is detachably connected with the loading channel of the handle, the control joint unit is provided with at least two, the control connecting unit is embedded and fixed with the positioning sleeve, the proximal end of the control line is fixedly connected with the control connecting unit, the control line is movably arranged with the control joint unit, and the control line is movably arranged with the control connecting unit.

[0010] As a preferred technical scheme, the linkage assembly further comprises a limiting member movably fixed with the loading channel of the handle, and the control member further comprises a fixing sleeve, the distal end of the fixing sleeve is sleeved on the outer wall of the control connecting unit, and the distal end of the fixing sleeve is sleeved in the inner cavity of the limiting member.

[0011] As a preferred technical scheme, the execution member comprises an execution connecting unit, an execution joint unit and a connecting seat arranged in sequence, the proximal end of the execution connecting unit is embedded and fixed with the positioning rod, the execution joint unit is provided with at least two, and the connecting seat is suitable for fixedly connecting with an interventional member; the control line is movably arranged with the execution connecting unit, the control line is movably arranged with the execution joint unit, and the distal end of the control line is fixedly connected with the connecting seat.

[0012] As a preferred technical scheme, the handle comprises a first handle part and a second handle part which are detachably connected, and the first handle part and the second handle part jointly form a loading channel.

[0013] The inner spherical body is arranged integrally with the first handle part.

[0014] Preferably, the control member and the execution member are respectively provided with an intervention channel, the positioning rod is a hollow rod, and the intervention channel and the positioning rod cavity are communicated with the loading channel.

[0015] The handle is in a straight cylinder structure.

[0016] The utility model also provides a minimally invasive electrosurgical instrument, including intervention member and above-mentioned operation mechanism, intervention member fixed attachment in the execution member's far end of operation mechanism.

[0017] Preferably, the utility model further comprises an electrical adapter and a wire, the electrical adapter is installed on the proximal end side of the handle in the operation mechanism, the electrical adapter is electrically connected with the wire, and the wire is adapted to be arranged through the operation mechanism to be electrically connected with the intervention member; and / or

[0018] The intervention member is a monopolar electrotome, a monopolar electric hook, a monopolar electric shovel or a monopolar electric rod.

[0019] The utility model provides a technical scheme, which has the following advantages:

[0020] The operation mechanism comprises a handle, a linkage assembly and a locking assembly, the handle has a loading channel, the linkage assembly comprises a control member, a positioning rod, an execution member and control wires, the proximal end of the control member is attached to the loading channel, the distal end of the control member is fixedly connected to one end of the positioning rod, the distal end of the execution member is fixedly connected to the other end of the positioning rod, the control member and the execution member are respectively provided as a plurality of joint units connected in series to form a flexible joint group, the control wires are provided as at least two, the plurality of joint units of the control member and the plurality of joint units of the execution member are connected through all the control wires, so that the control member and the execution member are connected in linkage, and all the control wires are arranged through the positioning rod, the distal end of the execution member is adapted to be attached to the intervention member, the locking assembly comprises an inner sphere and an outer spherical sleeve, the inner sphere is fixedly connected to the handle, the outer spherical sleeve is movably sleeved outside the inner sphere, and the inner sphere and the outer spherical sleeve are ball-hinged, the proximal end of the control member is movably arranged in the inner sphere, the distal end of the control member is movably arranged in the outer spherical sleeve and extends through the locking assembly to be connected to the positioning rod, and under the action of an external force, the outer spherical sleeve is adapted to abut against the locking inner sphere, so that the inner sphere and the outer spherical sleeve can jointly lock the movement posture of the control member.

[0021] The operating mechanism of the structure, the handle serves as a user holding base, the positioning rod is fixed with the external device rack, the control component and the execution component are respectively configured as flexible joint groups to have the motion ability of universal bending, the proximal end of the control component is movably arranged in the inner sphere, the distal end of the control component is movably arranged in the outer spherical sleeve, when the control component is bent, the two ends of the control component are movably abutted with the inner sphere and the outer spherical sleeve respectively, the user adjusts the motion posture of the control component through operation, adjusts the motion posture of the execution component through the control line linkage, drives the interventional component to change position, and then the outer spherical sleeve is abutted and locked with the inner sphere to lock the two ends of the control component, so that the execution component and the interventional component are locked correspondingly; in this way, the user can flexibly adjust the control end of the operating mechanism to adjust the motion change of the execution end, so that the interventional component can be universally deflected to approach the lesion, and the locking assembly is used to lock the position and posture of the interventional component, so that the adjustment flexibility and stability are good, and the lesion is treated through the interventional component, for example, precise electrosurgical energy is applied to the lesion, the operation process is flexible, convenient, safe, stable and reliable, and the operation fatigue is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The structure diagram of the minimally invasive electrosurgical surgical instrument provided by the present application is shown.

[0024] Figure 2 The partial structure diagram of the minimally invasive electrosurgical surgical instrument provided by the present application is shown.

[0025] Figure 3 The radial section view of the positioning rod in the operating mechanism provided by the present application is shown.

[0026] Figure 4 The partial schematic view of the operating mechanism provided by the present application is shown.

[0027] Figure 5 The connection schematic view of the control component in the operating mechanism provided by the present application is shown.

[0028] Figure 6 The connection schematic view of the handle and the locking assembly in the operating mechanism provided by the present application is shown.

[0029] Figure 7The utility model provides a connection schematic view of locking assembly in operating mechanism;

[0030] Figure 8 The utility model provides a section schematic view of locking assembly in operating mechanism;

[0031] Figure 9 The utility model provides a structure schematic view of positioning sleeve in operating mechanism;

[0032] Figure 10 The utility model provides a section schematic view of positioning sleeve in operating mechanism;

[0033] Figure 11 The utility model provides a connection schematic view of executing component and intervening component in operating mechanism;

[0034] Figure 12 The utility model provides a connection schematic view of connecting seat body and intervening component in operating mechanism;

[0035] Mark explanation:

[0036] 1-handle;11-first handle part;12-second handle part;

[0037] 2-linkage assembly;21-control component;211-control coupling unit;212-control joint unit;213-control connection unit;214-fixing sleeve;22-positioning rod piece;23-executing component;231-executing coupling unit;232-executing joint unit;233-connecting seat body;24-control line;25-positioning sleeve;26-restraint column;261-first restraint hole;262-second restraint hole;27-limiting component;

[0038] 3-locking assembly;31-inner sphere;32-outer ball cover;

[0039] 4-intervening component;5-electric adapter part;6-conductor. Specific implementation

[0040] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0041] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled persons in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the utility model.

[0042] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0043] Embodiment 1

[0044] As shown in Figure 1 , the embodiment provides an operating mechanism, which comprises a handle 1, a linkage assembly 2 and a locking assembly 3, the handle 1 has a loading channel.

[0045] For the design embodiment of the handle 1 in structure:

[0046] For example, in some embodiments, as shown in Figure 1 and Figure 6 , the handle 1 is provided as a straight cylinder structure, and the user such as a doctor can control the operating mechanism by straight grip operation, without changing the operation habit.

[0047] For example, in some embodiments, as shown in Figure 3 and Figure 7As shown, the handle 1 comprises a first handle part 11 and a second handle part 12 detachably connected, the first handle part 11 and the second handle part 12 jointly enclose a loading channel. The loading channel is specifically used as a structural assembly space, and a passing space of the structural instrument. The handle 1 is configured in a detachable form, which can facilitate the assembly of the proximal end portion of the linkage assembly 2 in the handle 1.

[0048] In the embodiment, as shown in Figure 2 and Figure 3 As shown, the linkage assembly 2 comprises a control member 21, a positioning rod 22, an execution member 23, and control lines 24, the proximal end of the control member 21 is attached in the loading channel, the distal end of the control member 21 is fixedly connected with one end of the positioning rod 22, the distal end of the execution member 23 is fixedly connected with the other end of the positioning rod 22, the control member 21 and the execution member 23 are respectively provided as flexible joint groups composed of a plurality of joint units connected in series, the control member 21 and the execution member 23 are connected through all the control lines 24, so that the control member 21 and the execution member 23 are connected in linkage, and all the control lines 24 are arranged in the positioning rod 22; the distal end of the execution member 23 is adapted to be attached to the intervention member 4.

[0049] As a preferred embodiment, the control lines 24 are provided with four, and the four control lines 24 are arranged in a ring shape and are arranged on the control member 21 and the execution member 23.

[0050] In the embodiment, as shown in Figure 7 and Figure 8 As shown, the locking assembly 3 comprises an inner sphere 31 and an outer sleeve 32, the inner sphere 31 is fixedly connected with the handle 1, the outer sleeve 32 is movably sleeved outside the inner sphere 31, and the inner sphere 31 and the outer sleeve 32 are arranged in spherical hinge; the proximal end of the control member 21 is movably arranged in the inner sphere 31, the distal end of the control member 21 is movably arranged in the outer sleeve 32 and extends through the locking assembly 3 to be connected with the positioning rod 22; under the action of external force, the outer sleeve 32 is adapted to abut against the inner sphere 31 to lock the movement posture of the control member 21. By limiting the two ends of the control member 21 by the inner sphere 31 and the outer sleeve 32 respectively, the relative position of the fixed inner sphere 31 and the outer sleeve 32 can be locked under the action of external force, so that the movement posture of the whole control member 21 can be locked.

[0051] The operation mechanism provided by the embodiment has the handle 1 as a user holding base, the positioning rod 22 is fixed with an external device rack, the control member 21 and the execution member 23 are respectively configured as flexible joint groups to have the motion ability of universal bending, the proximal end of the control member 21 is movably arranged in the inner sphere 31, the distal end of the control member 21 is movably arranged in the outer spherical sleeve 32, when the control member 21 is adjusted to bend, the two ends of the control member 21 movably abut against the inner sphere 31 and the outer spherical sleeve 32, the user adjusts the motion posture of the control member 21 by operation, adjusts the motion posture of the execution member 23 through the control line 24 linkage, drives the interventional member 4 to change position, and then the outer spherical sleeve 32 abuts and locks the inner sphere 31 to lock the two ends of the control member 21, so as to lock the execution member 23 and the interventional member 4 correspondingly. In this way, the user can flexibly adjust the control end of the operation mechanism to adjust the motion change of the execution end, so that the interventional member 4 can be deflected and close to the lesion of the affected area, and then the locking assembly 3 is used to lock the position and posture of the interventional member 4, which has good flexibility and stability, so that the interventional member 4 can be used to treat the lesion of the affected area, for example, precise electrosurgical energy is applied to the affected area. The operation process is flexible, convenient, safe, stable and reliable, and is conducive to reducing the operation fatigue.

[0052] As a specific embodiment, as shown in Figure 5 The control member 21 includes a control coupling unit 211, a control joint unit 212 and a control connection unit 213 connected in sequence, the control coupling unit 211 is detachably connected with the loading channel of the handle 1, the control joint unit 212 is provided with two or more, the control connection unit 213 is embedded and fixed with the positioning sleeve 25, the proximal end of the control line 24 is fixedly connected with the control coupling unit 211, the control line 24 is slidably arranged with the control joint unit 212, and the control line 24 is slidably arranged with the control connection unit 213.

[0053] In order to make the flexible joint group of the control member 21 have good universal bending ability, in one embodiment of the structure of the control member 21, the control coupling unit 211 and the control joint unit 212 adjacent thereto have the freedom of being rotatably arranged in two perpendicular directions, the two adjacent control joint units 212 have the freedom of being rotatably arranged in two perpendicular directions, and the control connection unit 213 and the control joint unit 212 adjacent thereto have the freedom of being rotatably arranged in two perpendicular directions.

[0054] As a preferred embodiment, as shown in Figure 2 , Figures 4 to 6As shown, the linkage assembly 2 further comprises a positioning sleeve 25 fixedly arranged between the distal end of the control member 21 and the proximal end of the positioning rod 22, the proximal end of the positioning sleeve 25 movably sleeved in the outer sleeve 32, and all the control lines 24 are arranged in the positioning sleeve 25. The positioning sleeve 25 can be used to bundle all the control lines 24 into the positioning rod 22. As shown, Figure 9 As shown, the proximal end of the positioning sleeve 25 can be provided with a plurality of insertion grooves corresponding to a plurality of insertion protrusions on the control connecting unit 213.

[0055] As a further embodiment, as shown, Figure 10 As shown, the linkage assembly 2 further comprises a constraint column 26 limitingly arranged in the positioning sleeve 25, the constraint column 26 is provided with a first constraint hole 261 and a second constraint hole 262 arranged separately, the first constraint hole 261 extends along the axis direction of the constraint column 26, and the first constraint hole 261 is suitable for slidingly penetrating the guide wire 6 or the interventional instrument, and the second constraint hole 262 is centrally symmetrically arranged outside the first constraint hole 261, and the second constraint hole 262 is in sliding configuration with the control line 24. The guide wire 6 or the interventional instrument is slidably guided through the first constraint hole 261 of the constraint column 26 to plan its movement route, and the second constraint hole 262 is correspondingly arranged with the control line 24, the control line 24 is slidably guided through the second constraint hole 262, and the constraint column 26 is used to isolate the control lines 24, which is beneficial to improve the control accuracy of the linkage assembly 2.

[0056] As a preferred embodiment, as shown, Figure 4 and Figure 5 As shown, the linkage assembly 2 further comprises a limiting member 27 limitingly and fixedly arranged with the loading channel of the handle 1, and the control member 21 further comprises a fixing sleeve 214, the distal end of the fixing sleeve 214 is sleeved on the outer wall of the control connecting unit 211, and the distal end of the fixing sleeve 214 is sleeved in the inner cavity of the limiting member 27. The limiting member 27 serves as a structure basis for connecting the proximal end of the control member 21 with the handle 1, so as to ensure that the proximal end of the control member 21 can be stably connected.

[0057] In a specific embodiment, the fixing sleeve 214 is provided as an elastic constraint sleeve, and the fixing sleeve 214 and the limiting member 27 are connected by expansion interference, and the fixing mode is stable and reliable.

[0058] As a preferred embodiment, as shown, Figure 11 and Figure 12As shown, the execution member 23 comprises execution coupling units 231, execution joint units 232 and connecting seat bodies 233 connected in sequence, the proximal end of the execution coupling unit 231 is fixedly embedded with the positioning rod 22, the execution joint unit 232 is provided with two or more, and the connecting seat body 233 is adapted to be fixedly connected with the intervention member 4; the control line 24 is slidably arranged with the execution coupling unit 231, the control line 24 is slidably arranged with the execution joint unit 232, and the distal end of the control line 24 is fixedly connected with the connecting seat body 233.

[0059] In order to make the flexible joint group of the execution member 23 have good universal bending ability, in one embodiment of the structure of the execution member 23, the execution coupling unit 231 and the execution joint unit 232 adjacent thereto have the freedom of being rotatably arranged in two perpendicular directions, the two adjacent execution joint units 232 have the freedom of being rotatably arranged in two perpendicular directions, and the connecting seat body 233 is directly fixedly connected with the execution joint unit 232 adjacent thereto. Of course, the connecting seat body 233 and the execution joint unit 232 adjacent thereto can also have the freedom of being rotatably arranged in two perpendicular directions.

[0060] As a preferred embodiment, the number of the control joint units 212 is greater than the number of the execution joint units 232. With such an arrangement, the control end needs to adjust the movement of the execution end through a larger movement deformation, which can achieve the purpose of more accurately implementing the universal deflection control.

[0061] In a specific embodiment, the control member 21 and the execution member 23 are respectively provided with an intervention channel, the positioning rod 22 is provided as a hollow rod, and the inner cavity of the positioning rod 22, the intervention channel and the loading channel are communicated. In the initial state of the operating mechanism, the control member 21, the positioning rod 22 and the execution member 23 are coaxially arranged.

[0062] In some embodiments, as shown in Figure 7 As shown, the inner sphere 31 is integrally arranged with the first handle part 11. With such an arrangement, the structural strength can be improved, the locking performance of the inner sphere 31 and the outer sleeve 32 is stable, and the control accuracy is improved.

[0063] Example 2

[0064] The embodiment provides a minimally invasive electrosurgical instrument, which comprises an intervention member 4 and the above-mentioned operating mechanism, and the intervention member 4 is fixedly attached to the distal end of the execution member 23 of the operating mechanism.

[0065] As a preferred embodiment, an electrical adapter 5 is further included, which is installed at the proximal end side of the handle 1 in the operating mechanism, and an electric wire 6 is electrically connected with the electrical adapter 5, which is adapted to be arranged through the operating mechanism to be electrically connected with the interventional member 4. In a specific embodiment, a foot switch can be arranged to be connected with the electrical adapter 5 to control the excitation of the electrosurgical energy.

[0066] In a specific embodiment, the interventional member 4 is configured as a monopolar electrotome, a monopolar electrotongue, a monopolar electroscoop or a monopolar electrotome, etc.

[0067] The minimally invasive electrosurgical surgical instrument provided by the embodiment is suitable for endoscopic occasions, and realizes flexible mapping between the instrument and the user's hand movement without changing the user's operation habit, without increasing the volume and weight of the instrument, and simultaneously completing the output of the electrosurgical energy.

[0068] The minimally invasive electrosurgical surgical instrument provided by the embodiment can realize locking of the instrument and precise application of the electrosurgical energy to the affected part under the condition of flexible adjustment of the control end universal deflection, and the process is safe and reliable.

[0069] Obviously, the above embodiment is only an example for clear illustration, and is not a limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An operating mechanism characterized by comprising: The utility model relates to a medical device, including: Handle (1) with loading channel; Linkage assembly (2) including control member (21), positioning rod (22), execution member (23) and control line (24), the proximal end of control member (21) is attached to the loading channel, the distal end of control member (21) is fixedly connected with one end of positioning rod (22), the distal end of execution member (23) is fixedly connected with the other end of positioning rod (22), control member (21) and execution member (23) are respectively provided as flexible joint group that a plurality of joint units are connected in series, control line (24) is provided with at least two, a plurality of joint units of control member (21) and a plurality of joint units of execution member (23) are connected through all control lines (24), so that control member (21) and execution member (23) are connected, all control lines (24) are arranged in positioning rod (22);The distal end of execution member (23) is suitable for attaching intervention member (4); Locking assembly (3) including inner sphere (31) and outer ball cover (32), the inner sphere (31) is fixedly connected with handle (1), the outer ball cover (32) is movably sleeved outside the inner sphere (31), the inner sphere (31) and the outer ball cover (32) are provided with spherical hinge;The proximal end of control member (21) is movably arranged in the inner sphere (31), the distal end of control member (21) is movably arranged in the outer ball cover (32) and extends through the locking assembly (3) to be connected with the positioning rod (22);Under the action of external force, the outer ball cover (32) is suitable for abutting and locking the inner sphere (31), so that the inner sphere (31) and the outer ball cover (32) can jointly lock the movement posture of control member (21).

2. The operating mechanism according to claim 1, characterized in that The linkage assembly (2) further includes a positioning sleeve (25) fixedly arranged between the distal end of the control member (21) and the proximal end of the positioning rod (22), the proximal end of the positioning sleeve (25) is movably sleeved in the outer ball cover (32), and all the control lines (24) are arranged in the positioning sleeve (25).

3. The operating mechanism according to claim 2, characterized in that The linkage assembly (2) further includes a constraint column (26) position-limited arranged in the positioning sleeve (25), the constraint column (26) is provided with a first constraint hole (261) and a second constraint hole (262) arranged separately thereon, the first constraint hole (261) extends along the axis direction of the constraint column (26), the first constraint hole (261) is suitable for slidingly arranging a guide wire (6) or an interventional instrument, and the second constraint hole (262) is centrally symmetrically arranged outside the first constraint hole (261), and the second constraint hole (262) is slidably arranged with the control line (24).

4. The operating mechanism of claim 2, wherein The control member (21) comprises control coupling units (211), control joint units (212) and control connecting units (213) connected in sequence, the control coupling units (211) are detachably connected with the loading channel of the handle (1), the control joint units (212) are provided in at least two, the control connecting units (213) are embeddedly fixed with the positioning sleeve (25), the proximal end of the control wire (24) is fixedly connected with the control coupling units (211), the control wire (24) is slidably arranged with the control joint units (212), and the control wire (24) is slidably arranged with the control connecting units (213).

5. The operating mechanism of claim 4, wherein The linkage assembly (2) further comprises a limiting member (27) which is limitingly and fixedly arranged with the loading channel of the handle (1), and the control member (21) further comprises a fixing sleeve (214), the distal end of the fixing sleeve (214) is connected with the outer wall of the control coupling units (211), and the distal end of the fixing sleeve (214) is connected with the inner cavity of the limiting member (27).

6. The operating mechanism of claim 1, wherein The execution member (23) comprises execution coupling units (231), execution joint units (232) and connecting seat bodies (233) connected in sequence, the proximal end of the execution coupling units (231) is embeddedly fixed with the positioning rod (22), the execution joint units (232) are provided in at least two, the connecting seat bodies (233) are adapted to be fixedly connected with the intervention member (4); the control wire (24) is slidably arranged with the execution coupling units (231), the control wire (24) is slidably arranged with the execution joint units (232), and the distal end of the control wire (24) is fixedly connected with the connecting seat bodies (233).

7. Operating mechanism according to any one of claims 1-6, characterized in that The handle (1) comprises a first handle part (11) and a second handle part (12) which are detachably connected, and the first handle part (11) and the second handle part (12) jointly enclose the loading channel. The inner sphere (31) is integrally arranged with the first handle part (11).

8. Operating mechanism according to any one of claims 1-6, characterized in that The control member (21) and the execution member (23) are respectively provided with intervention channels in the inside, the positioning rod (22) is provided as a hollow rod, the inner cavity of the positioning rod (22), the intervention channels and the loading channel are communicated, and / or The handle (1) is provided as a straight cylinder structure.

9. A minimally invasive electrosurgical instrument, comprising: The operation mechanism comprises an intervention member (4) and any one of the operation mechanisms in claims 1-8, and the intervention member (4) is fixedly attached to the distal end of the execution member (23) of the operation mechanism.

10. The minimally invasive electrosurgical instrument of claim 9, wherein, The operation mechanism further comprises an electrical adapter (5) and a wire (6), the electrical adapter (5) is installed on the proximal end side of the handle (1) of the operation mechanism, the electrical adapter (5) and the wire (6) are electrically connected, and the wire (6) is adapted to be arranged through the operation mechanism to be electrically connected with the intervention member (4); and / or The intervention member (4) is provided as a monopolar electric knife, a monopolar electric hook, a monopolar electric shovel or a monopolar electric rod.

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