Micro-motion system for surgery

Abstract

The present invention provides a micro-motion power system for surgery, which relates to the technical field of surgical equipment and solves the technical problem that a hammer is used to provide hammering force during surgery, which is time-consuming, labor-intensive and difficult to control. The micro-motion power system for surgery includes a gun-shaped or columnar housing, a spindle, a power assembly and a clamping assembly. The spindle is movably arranged in the housing and can extend or retract relative to the housing. The clamping assembly is connected to one end of the spindle extending outside the housing; the power assembly is movably arranged in the housing and is intermittently contacted with the spindle, and can apply a positive hammering force or a reverse hammering force to the spindle at each contact. The present invention is used to provide a tool system for a series of surgical operations such as a complete set of bone structure cutting, grinding, bone grafting surface treatment, trial mold and placement and removal of fusion devices, intramedullary nails, etc., and filling and tamping of bone grafting materials for surgical operations. The system can realize the above-mentioned series of surgical operations and has the characteristics of fast, efficient, stable and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical equipment, and in particular to a micro-motion power system for surgery. Background Art

[0002] During the operation, bone structure cutting, grinding, bone grafting surface treatment, trial molds and placement and removal of fusion devices, intramedullary nails, etc., as well as filling and tamping of bone grafting materials are often performed. Instruments such as osteotome, bone shovel or bone knife are often used in the above operations.

[0003] During existing surgeries and spinal surgeries, doctors use hammers or sledgehammers to hit instruments such as bone chisels / bone shovels / bone knives to perform tamping and hammering. This operation method is not only time-consuming, labor-intensive, and inefficient; it is also difficult to control the instruments because they need to be held in hand. Once the instruments fall into the human abdominal cavity, they can easily cause damage to important organs in the abdominal cavity. Moreover, hammers or sledgehammers are large in size, requiring a large surgical operating space, and requiring frequent instrument replacements during surgery. Summary of the invention

[0004] The purpose of the present invention is to provide a micro-motion power system for surgery to solve the technical problems in the prior art of using a hammer to provide hammering force during surgery, which is time-consuming, labor-intensive and difficult to control.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a surgical micro-motion power system, which includes a gun-shaped or cylindrical shell, a main shaft, a power assembly and a clamping assembly. The main shaft is movably arranged in the shell and can be extended or retracted relative to the shell. The clamping assembly is connected to one end of the main shaft extending outside the shell; the power assembly is movably arranged in the shell and is intermittently contacted with the main shaft, and can apply a positive hammering force or a reverse hammering force to the main shaft each time it contacts.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] As a further improvement of the present invention, a first retaining ring and a second retaining ring are arranged on the main shaft at intervals, and the distance between the first retaining ring and the second retaining ring is greater than the movable distance of the power component. When the clamping component is under pressure or tension, the main shaft retracts or extends from the shell so that the first retaining ring or the second retaining ring is located within the moving route of the power component.

[0009] As a further improvement of the present invention, it also includes a reset component which is arranged between the first retaining ring and the housing and between the second retaining ring and the housing and can drive the main shaft to reset.

[0010] As a further improvement of the present invention, the power assembly includes a motor, a crankshaft, a connecting rod and a piston which are sequentially connected in transmission. The piston is sleeved on the outside of the main shaft between the first retaining ring and the second retaining ring and can move freely relative to the main shaft.

[0011] As a further improvement of the present invention, it also includes a counterweight assembly arranged at the other end of the main shaft.

[0012] As a further improvement of the present invention, the reset assembly is a spring, the maximum compression amounts of the springs located on the left side of the first retaining ring and the right side of the second retaining ring are the same or different, and the maximum compression amounts of the two springs are both smaller than the crankshaft radius.

[0013] As a further improvement of the present invention, when the clamping assembly is not subjected to force, a first gap and a second gap are provided between the first retaining ring and the second retaining ring and the left and right extreme positions of the piston stroke, and the first gap and the second gap have the same or different specifications, and the first gap and the second gap specifications are both smaller than the maximum compression amount of the spring.

[0014] As a further improvement of the present invention, when the piston collides with the first retaining ring or the second retaining ring during movement, the impact force thereof is greater than the tension or pressure of the spring.

[0015] As a further improvement of the present invention, a partition is arranged inside the shell, which can divide the inner cavity of the shell into two independent spaces, the power component is arranged in the left space, and the counterweight component is arranged in the right space. The counterweight component includes a third retaining ring and two sections of springs. The third retaining ring is arranged in the middle of the right space, and the two sections of the spring are respectively located between the partition and the third retaining ring, and the shell and the third retaining ring.

[0016] As a further improvement of the present invention, the travel of the first retaining ring and the second retaining ring under the action of hammer force is 1-8 mm.

[0017] As a further improvement of the present invention, the striking frequency of the piston and the first retaining ring or the second retaining ring is 200-8000 times / min.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The surgical micro-motion power system provided by the present invention provides a complete set of tool systems for surgical operations such as cutting and grinding of bone structures, bone grafting surface treatment, insertion and removal of trial molds and fusion devices, intramedullary nails, etc., and filling and tamping of bone grafting materials. The system can realize the above-mentioned series of surgical operations and has the characteristics of fast, efficient, stable and safe. The micro-motion power system of the present invention is different from the ultrasonic bone knife and grinding drill currently used in surgery. The surgical micro-motion power system of the present invention generates low heat during use and will not cause thermal damage to human tissue, which is beneficial to the repair and healing of surgical area tissue; the amplitude (the stroke of the first retaining ring and the second retaining ring under the action of the hammer force) used by the surgical micro-motion power system of the present invention is 1 to 8 mm. Even if the tool is extended, the working efficiency of the working part will not be significantly attenuated, and will not affect The working efficiency is affected, and it can be used for operation under direct vision, and it can also be applied to long-distance work of operating systems such as endoscopes and channels; the surgical micro-motion power system of the present invention adopts an operating frequency range of 200-18000 times / minute, that is, the motor operating frequency is 200-18000 rpm. This frequency band generates less heat, and soft tissue damage can be ignored. During the operation, water cooling is almost unnecessary, which greatly reduces the complexity of system operation and greatly improves the cleanliness of the operating field; the surgical micro-motion power system of the present invention includes a main unit with adjustable frequency and power (the frequency and power are adjusted by adjusting the power and frequency of the motor), which is connected to a plurality of different surgical instruments through a ball valve quick-release head, so as to meet a variety of operations in the operation, realize a real one-machine-multi-purpose, and the system is stable, and the amplitude, frequency and power are conveniently and smoothly adjusted.

[0020] The surgical micro-motion power system provided by the present invention has a unique structure in which a motor drives a crankshaft connecting rod, and has the characteristics of labor saving, speed, precision, and saving operating space. Only by replacing the head end installed on the clamping assembly, one machine can be used for multiple purposes and intramedullary nails can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the micro-motion power system for surgery of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the micro-motion power system for surgery of the present invention after being sectioned along the axis;

[0024] Figure 3It is a front view of the micro-motion power system for surgery of the present invention after being sectioned along the axis.

[0025] In the figure, 1, housing; 2, main shaft; 21, first retaining ring; 22, second retaining ring; 23, first spring; 24, second spring; 25, third retaining ring; 26, third spring; 27, fourth spring; 3, power assembly; 31, motor; 32, crankshaft; 33, connecting rod; 34, piston; 4, clamping assembly; 5, partition; 6, switch; 100, flat-blade bone knife shovel head; 200, arc-blade bone knife shovel head; 300, bone knife hook knife; 400, hammer head end; 500, remove fusion device or intramedullary nail connector. DETAILED DESCRIPTION

[0026] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0027] like Figure 1 As shown, the present invention provides a surgical micro-motion power system, including a gun-shaped or cylindrical housing 1, a spindle 2, a power assembly 3 and a clamping assembly 4; the clamping assembly 4 is a ball valve quick-release head, which is a prior art product purchased from the external market, and the clamping assembly 4 clamps the head end instrument for surgery. There are many types of head end instruments, which are used for different surgical treatment processes, such as Figure 1-Figure 3 As shown, a flat-blade bone knife shovel head 100, an arc-blade bone knife shovel head 200, a bone knife hook knife 300, a hammer head end 400 and a fusion device or intramedullary nail connector are provided; the shell 1 includes a horizontal portion and a vertical portion, the main shaft 2 is movably arranged in the shell 1, specifically, it is arranged in the horizontal portion, and can be extended or retracted relative to the shell 1, and the clamping assembly 4 is connected to the end of the main shaft 2 extending outside the shell 1; the power assembly 3 is movably arranged in the shell 1, specifically, it is arranged in the vertical portion, and is intermittently contacted with the main shaft 1, and can apply a positive hammering force or a reverse hammering force to the main shaft 2 each time it contacts.

[0028] like Figure 2 and Figure 3As shown, it should be noted that both ends of the horizontal part have openings for the main shaft 2 to extend out, the vertical part is connected to the right side of the horizontal part, and the clamping assembly 4 is connected to the main shaft 2 at one end of the horizontal part away from the vertical part; both the horizontal part and the vertical part are hollow cylindrical structures. When the power assembly 3 applies a forward hammering force to the main shaft 2, the micro-motion power system serves as the power source of the hammering force of the head end instrument to drive the head end instrument to continuously hammer the bone; when the power assembly 3 applies a reverse hammering force to the main shaft 2, the micro-motion power system serves as the power source of the pulling force of the head end instrument to drive the head end instrument to pull out the intramedullary nail or fusion device that needs to be pulled out. In the present invention, the forward direction refers to the direction from the right end of the shell 1 to the left end, and the reverse direction refers to the direction from the left end of the shell 1 to the right end.

[0029] The action characteristics of the power assembly 3 determine the hammering or pulling action characteristics of the spindle 2, and can be selected for use according to actual needs. In one embodiment of the present invention, the power assembly 3 hammers the spindle 2 forward or reversely at a fixed periodic interval.

[0030] As an optional embodiment, the main shaft 2 is provided with a first retaining ring 21 and a second retaining ring 22 at intervals, and the distance between the first retaining ring 21 and the second retaining ring 22 is greater than the movable distance of the power assembly 3, that is, in the original state, the first retaining ring 21 and the second retaining ring 22 are located outside the moving route range of the power assembly 3; the first retaining ring 21 and the second retaining ring 22 are fixed on the main shaft 2, are disc-shaped, and have a diameter smaller than the inner cavity diameter of the shell 1. When the clamping assembly 3 is not subjected to force, that is, when the micro-motion power system is in a no-load state, The power component 3 can move between the first retaining ring 21 and the second retaining ring 22 without touching any of the retaining rings; when the clamping component 4 is under pressure or tension, the spindle 2 retracts or extends from the housing 1 so that the first retaining ring 21 or the second retaining ring 22 is located within the moving path of the power component 3. Here, when the power component 3 moves, it will come into contact with one of the retaining rings and apply a hammering force, while the other retaining ring is never in contact with the power component 3. The power component 3 can reciprocate within the housing 1 to periodically hammer one of the retaining rings.

[0031] like Figure 3 As shown, it also includes a reset component that is arranged between the first retaining ring 21 and the housing 1 and between the second retaining ring 22 and the housing 1 and can drive the main shaft 2 to reset.

[0032] Specifically, the reset assembly is a spring sleeved on the main shaft 2. Furthermore, the spring sleeved between the first retaining ring 21 and the inner wall of the housing 1 is the first spring 23, and the spring sleeved between the second retaining ring 22 and the inner wall of the housing 1 is the second spring 24. When the first retaining ring 21 moves toward the left end of the housing 1, the first spring 23 is compressed and the second spring 24 is stretched; when the second retaining ring 22 moves toward the right end of the housing 1, the second spring 24 is compressed and the first spring 23 is stretched.

[0033] It should be noted that the maximum compression amounts of the first spring 23 and the second spring 24 may be the same or different. In the present embodiment, two springs with the same maximum compression amounts are used. It should also be noted that the elastic coefficients of the first spring 23 and the second spring 24 may be the same or different, and the specifications may be the same or different. In the present embodiment, two completely identical springs are used, and the maximum compression amounts of the first spring 23 and the second spring 24 are both smaller than the radius of the crankshaft 32.

[0034] like Figure 3 As shown, the power assembly 3 includes a reduction motor 31, a crankshaft 32, a connecting rod 33 and a piston 34 which are sequentially connected in transmission. The piston 34 is sleeved on the outside of the main shaft 2 between the first retaining ring 21 and the second retaining ring 22, and can move freely relative to the main shaft 2. That is to say, when the main shaft 2 and the piston 34 are not in contact, the piston 34 will not move with the main shaft 2 when the main shaft 2 moves, and when the piston 34 moves, the main shaft 2 will not move with it. The piston 34 is a cylindrical structure. A switch 6 is also provided at the top of the vertical part of the housing 1, and the start of the motor 31 can be controlled by pressing the switch 6.

[0035] like Figure 2 and Figure 3 As shown, it also includes a counterweight assembly arranged at the other end of the main shaft 2.

[0036] A partition 5 is arranged inside the shell 1, which can divide the inner cavity of the shell 1 into two independent spaces. A through hole is arranged on the partition 5 to facilitate the passage of the main shaft 2; further, the partition 5 is close to the right end of the shell 1; the power assembly 3 is arranged in the left space, and the counterweight assembly is arranged in the right space. The counterweight assembly includes a third retaining ring 25 and two sections of springs. The third retaining ring 25 is arranged in the middle of the right space. The two sections of springs are respectively a third spring 26 and a fourth spring 27. The third spring 26 is arranged between the partition 5 and the third retaining ring 25, and the fourth spring 27 is arranged between the third retaining ring 25 and the inner wall of the shell 1.

[0037] The specifications, maximum compression, elastic coefficient and other parameters of the third spring 26 and the fourth spring 27 may be the same as or different from those of the first spring 23. Of course, in order to simplify the structure and facilitate the design, in this embodiment, four completely identical springs are used.

[0038] When the clamping assembly 4 is not subjected to force, there is a first gap and a second gap between the first retaining ring 21 and the second retaining ring 22 and the left and right limit positions of the stroke of the piston 34. The first gap and the second gap have the same or different specifications, and the first gap and the second gap specifications are both smaller than the maximum compression of the spring. In this embodiment, the first gap and the second gap are both selected to be 2 mm; the maximum compression of the spring is 8 mm, and the radius of the crankshaft 32 is 11 mm.

[0039] In this embodiment, the retraction stroke when under compression is exactly the same as the extension stroke when under tension.

[0040] When the piston 34 moves and collides with the first retaining ring 21 or the second retaining ring 22, the impact force is greater than the tension or pressure of the spring. Through the above structural design, the main shaft 2 can be displaced by a small amplitude of 1-8 mm under the hammering of the piston 34.

[0041] Furthermore, the travel of the first retaining ring 21 and the second retaining ring 22 under the hammering force is 1-8 mm.

[0042] The frequency of the piston 34 striking the first retaining ring 21 or the second retaining ring 22 is 200-8000 times / min.

[0043] The specific operation method is:

[0044] When the micro-motion power system is used as a forward hammering power source, that is, when the surgical instrument installed on the clamping assembly 4 is a bone chisel, a bone shovel or a bone knife, first, install the surgical instrument on the clamping assembly 4, then hold the vertical part of the micro-motion power system, and press the surgical instrument on the bone position that needs to be treated. Due to the pressing force, the main shaft 2 retracts inward, and the first retaining ring 21 moves toward the side of the piston 34 and is connected with the piston 34. The reduction motor 31 is started. When the equipment is in the initial state, the crankshaft 32 is located at the far left. After the motor 31 is running, it drives the crankshaft 32 to rotate to the right, and the connecting rod 33 follows and moves to the right, thereby driving the piston 34 to move to the right. While the piston 34 moves, due to the pressing force, the main shaft 2 will still Retract a little and enter the reciprocating stroke of the piston 34. When the piston 34 moves to the rightmost end, it will turn back and move to the left, and contact the first retaining ring 21 located in its moving stroke and form a hammering force on the first retaining ring 21 due to the inertial force. The hammering force applied by the piston 34 to the first retaining ring 21 will be transmitted to the surgical instrument. The piston 34 turns back and moves to the right in a circular motion after a short stop, thereby continuously circulating and applying a hammering force to the first retaining ring 21. After the operation is completed, turn off the motor 31, lift the micro-motion power system, and due to the elastic force of the spring, the spindle 2 is reset and restored to the original position. The surgical instrument is removed and replaced with a new surgical instrument to proceed to the next surgical step or the surgical instrument is stored. Wait for the next surgical process.

[0045] When the micro-motion power system is used as a reverse hammering power source, that is, when the surgical instrument installed on the clamping assembly 4 is an instrument for pulling out the intramedullary nail, first, install the instrument for pulling out the intramedullary nail on the clamping assembly 4, then hold the vertical part of the micro-motion power system, grasp the intramedullary nail with the instrument, and pull the micro-motion power system with force. Due to the pulling force, the main shaft 2 extends outward, and the second retaining ring 22 moves toward the side of the piston 34. Since the distance between the first retaining ring 21 and the second retaining ring 22 is greater than the moving stroke of the piston 34 and is located outside the moving route, and when the device is in the initial state, the crankshaft 32 is located at the far left, that is, the piston 34 is located at the leftmost limit point of the moving route, so when the micro-motion power system is pulled, the second retaining ring 22 moves to the left and can move into the moving route of the piston 34; start the reduction motor 31 When the device is in the initial state, the crankshaft 32 is located at the far left. After the motor 31 is running, the crankshaft 32 rotates to the right, and the connecting rod 33 moves to the right, thereby driving the piston 34 to move to the right. When the piston 34 moves to the right end and contacts the second retaining ring 22, a hammering force will be applied to the second retaining ring 22 due to the inertial force. The hammering force applied by the piston 34 to the second retaining ring 22 will be transmitted to the surgical instrument. The piston 34 returns and moves to the left after a short stop. Thus, it continuously circulates and applies a hammering force to the second retaining ring 22 to pull out the intramedullary nail; turn off the motor 31, lift the micro-motion power system, and due to the elastic force of the spring, the spindle 2 is reset and restored to the original position. The surgical instrument is removed and replaced with a new surgical instrument to proceed to the next surgical step or store the surgical instrument. Wait for the next surgical process.

[0046] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A surgical micro-motion power system, characterized in that: The invention comprises a gun-shaped or cylindrical housing, a main shaft, a power assembly and a clamping assembly, wherein the main shaft is movably arranged in the housing and can extend or retract relative to the housing, a first retaining ring and a second retaining ring are arranged on the main shaft at intervals, and the distance between the first retaining ring and the second retaining ring is greater than the movable distance of the power assembly, the first retaining ring and the second retaining ring are in the shape of discs, and the diameter is smaller than the diameter of the inner cavity of the housing; the clamping assembly is connected to one end of the main shaft extending out of the housing; when the clamping assembly is under pressure or tension, the main shaft retracts or extends out of the housing so that the first retaining ring or the second retaining ring is located at the position where the power assembly moves. The power component is movably arranged between the first retaining ring and the second retaining ring in the shell; when the clamping component is not subjected to force, the power component can move between the first retaining ring and the second retaining ring without touching any retaining ring; when the clamping component is under pressure or tension, the power component will contact with one of the retaining rings and apply hammering force when moving, while the other retaining ring does not contact the power component, and the power component can reciprocate in the shell to perform periodic hammering action on one of the retaining rings, and can apply positive hammering force or reverse hammering force to the spindle at each contact.

2. The surgical micro-motion power system according to claim 1, characterized in that: It also includes a reset component which is arranged between the first retaining ring and the housing, and between the second retaining ring and the housing and can drive the main shaft to reset.

3. The surgical micro-motion power system according to claim 2, characterized in that: The power assembly includes a motor, a crankshaft, a connecting rod and a piston which are sequentially connected in transmission. The piston is sleeved on the outer side of the main shaft between the first retaining ring and the second retaining ring and can move freely relative to the main shaft.

4. The surgical micro-motion power system according to claim 1, characterized in that: It also includes a counterweight assembly arranged at the other end of the main shaft.

5. The surgical micro-motion power system according to claim 3, characterized in that: The reset assembly is a spring, and the maximum compression amounts of the springs located on the left side of the first retaining ring and the right side of the second retaining ring are the same or different, and the maximum compression amounts of the two springs are both smaller than the crankshaft radius.

6. The surgical micro-motion power system according to claim 5, characterized in that: When the clamping assembly is not subjected to force, a first gap and a second gap are provided between the first retaining ring and the second retaining ring and the left and right extreme positions of the piston stroke. The first gap and the second gap have the same or different specifications, and the first gap and the second gap specifications are both smaller than the maximum compression amount of the spring.

7. The surgical micro-motion power system according to claim 5, characterized in that: When the piston moves and collides with the first retaining ring or the second retaining ring, the impact force is greater than the tension or pressure of the spring.

8. The surgical micro-motion power system according to claim 4, characterized in that: A partition is arranged inside the shell, which can separate the inner cavity of the shell into two independent spaces. The power component is arranged in the left space, and the counterweight component is arranged in the right space. The counterweight component includes a third retaining ring and two sections of springs. The third retaining ring is arranged in the middle of the right space, and the two sections of the spring are respectively located between the partition and the third retaining ring, and between the shell and the third retaining ring.

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