An orthopedic surgical system

Abstract

The application belongs to the technical field of medical equipment and discloses an orthopedic surgery system, which comprises a cutter and a physiological saline circulating mechanism; the cutter comprises a shell, a cutting piece, a driving piece and a warning piece; the cutting piece is partially arranged in the shell; the driving piece is arranged in the shell; the cutting piece is divided into a working end close to a cutting position and an operating end away from the cutting position; the operating end is connected with the driving piece; the cutting piece is provided with a sensing piece close to the working end; the sensing piece is connected with the shell; the sensing piece can sense the radial force and the axial force of the working end; the sensing piece is electrically connected with the warning piece; and the physiological saline circulating mechanism is used for providing physiological saline to the working end and the cutting opening. The orthopedic surgery system can realize real-time sensing of the environment of orthopedic surgery, assist doctors in understanding the force condition of the cutter in the surgery process, enable the doctors to accurately control the cutting precision of the surgery, and realize faster and better treatment of patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to an orthopedic surgical system. Background Technology

[0002] With the development of computer technology, microelectronics technology, and medical science, medical robots have made great strides and have been widely applied. Current research on medical robots mainly focuses on surgical robots, rehabilitation robots, and nursing robots. Orthopedic surgical robots are a type of surgical robot designed to assist surgeons in orthopedic procedures. However, existing orthopedic surgical robots cannot perceive the surgical environment in real time, and surgeons cannot understand the forces exerted on the cutting instruments on the robot during surgery. Therefore, surgeons cannot control the precision of the operation, leading to problems such as longer surgery times, greater intraoperative bleeding, and longer healing times for patients.

[0003] Therefore, there is an urgent need for an orthopedic surgical system to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide an orthopedic surgical system that can sense the orthopedic surgical environment in real time, assist doctors in understanding the force on the cutter during the operation, enable doctors to accurately control the cutting precision of the operation, and achieve faster and better treatment of patients.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An orthopedic surgical system, comprising:

[0007] A cutter includes a housing, a cutting component, a driving component, and a warning component. The cutting component is partially housed within the housing, and the driving component is also housed within the housing. The cutting component includes a working end near the cutting point and an operating end away from the cutting point. The operating end is connected to the driving component. A sensor is provided near the working end of the cutting component. The sensor is connected to the housing and is capable of sensing radial and axial forces on the working end. The sensor is electrically connected to the warning component.

[0008] A saline circulation mechanism is provided to supply saline solution to the working end and the cutting area.

[0009] As a preferred technical solution for an orthopedic surgical system, the sensing element has multiple sensing units arranged around the cutting element. Each sensing unit includes an elastomer, a first strain gauge, and a second strain gauge. The elastomer is located between the housing and the cutting element. The first strain gauge is attached to the surface of the elastomer and is used to sense the radial force on the working end. The second strain gauge is embedded in the elastomer and is used to sense the axial force on the working end.

[0010] As a preferred technical solution for an orthopedic surgical system, the sensing element includes an inner ring and an outer ring, the sensing unit is connected between the inner ring and the outer ring, multiple sensing units are spaced apart, the inner ring is sleeved on the cutting element, and the outer ring is fixed to the inner wall of the housing.

[0011] As a preferred technical solution for orthopedic surgical systems, the cutting component includes a cutting body and a first bearing. One end of the cutting body is connected to the driving component, and the other end is provided with a cutting head. The first bearing is sleeved on the cutting body and close to the cutting head, and the inner ring is sleeved on the outer periphery of the first bearing.

[0012] As a preferred technical solution for orthopedic surgical systems, the cutter further includes a locking element and a spring, both of which are housed within the housing. The locking element is located on the side of the first bearing facing the operating end and is connected to the housing. The spring is located between the first bearing and the locking element. The housing, the locking element, and the spring can axially restrict the outer ring of the first bearing.

[0013] As a preferred technical solution for orthopedic surgical systems, the cutter further includes a first fixing member located on the side of the first bearing away from the operating end. The first fixing member is connected to the cutting body and fits against the front end face of the inner ring of the first bearing. The cutting body is provided with a first abutting part, which fits against the rear end face of the inner ring of the first bearing.

[0014] As a preferred technical solution for orthopedic surgical systems, the cutting component further includes a second bearing, and the cutting body also has a second abutment. The second bearing is sleeved on the cutting body, and the front end face of the second bearing is in contact with the second abutment. The cutter also includes a second fixing member, which is located between the second bearing and the driving component. The second fixing member is connected to the cutting body, and the second fixing member and the housing can restrict the second bearing in the axial direction.

[0015] As a preferred technical solution for orthopedic surgical systems, the saline circulation mechanism includes a saline delivery component, a saline return component, and a container. Both the saline delivery component and the saline return component are connected to the container. The saline delivery component is used to deliver saline solution to the incision, and the saline return component is used to filter the used saline solution and deliver it to the container.

[0016] As a preferred technical solution for the orthopedic surgical system, the orthopedic surgical system further includes a locking seat for fixing the cutter to an external device. The locking seat includes a base, a limiting member, and a locking bolt. The base has a locking hole, through which the cutter passes. The limiting member and the locking bolt can lock the cutter in the locking hole, and the limiting member can restrict the movement of the cutter relative to the locking hole.

[0017] As a preferred technical solution for the orthopedic surgical system, the orthopedic surgical system further includes a nerve monitoring mechanism, which includes a conduction wire, a signal processor, and an electromyography detection device. There are two conduction wires, one of which connects the cutter and the signal processor, and the other of which connects the perimeter of the cut site and the signal processor.

[0018] The beneficial effects of this invention are as follows:

[0019] The orthopedic surgical system provided by this invention incorporates sensors on the cutting tool to detect the radial and axial forces acting on the tool during rotation. The radial force data helps the surgeon determine the cutting depth and speed. The axial force data helps the surgeon determine if the cutting tool is experiencing instability during the procedure, allowing for timely adjustments to the cutting action. The sensors facilitate precise control of the orthopedic surgical procedure, enabling accurate and rapid completion of the surgery and ensuring patient safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cutter and saline circulation mechanism of the orthopedic surgical system provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the cutter of the orthopedic surgical system provided by the present invention (the housing is not shown);

[0022] Figure 3 This is a schematic diagram of the cutting component of the orthopedic surgical system provided by the present invention;

[0023] Figure 4 This is a schematic diagram of the cutting body of the orthopedic surgical system provided by the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the shell of the orthopedic surgical system provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the sensing element of the orthopedic surgical system provided by the present invention;

[0026] Figure 7 This is an exploded schematic diagram of the locking seat of the orthopedic surgical system provided by the present invention;

[0027] Figure 8 This is a schematic diagram of the trolley for the orthopedic surgical system provided by the present invention.

[0028] In the picture:

[0029] 1. Cutter; 11. Housing; 111. First abutment surface; 112. Second abutment surface; 113. Third abutment surface; 114. Groove;

[0030] 12. Cutting component; 121. Cutting body; 1211. Cutting head; 1212. First stop part; 1213. Second stop part; 122. First bearing; 123. Second bearing;

[0031] 13. Driving components;

[0032] 14. Sensing element; 141. Sensing unit; 1411. Elastic body; 1412. First strain gauge; 142. Inner ring; 143. Outer ring;

[0033] 15. Locking component; 16. Spring clip; 17. First fixing component; 18. Second fixing component;

[0034] 2. Saline circulation mechanism; 21. Saline delivery component; 22. Saline return component; 23. Trolley; 231. Container tank;

[0035] 3. Locking seat; 31. Base; 311. Base plate; 312. Main body; 3121. Locking hole; 3122. Opening; 32. Limiting part; 321. Protrusion; 322. Locking hole; 33. Locking bolt; 34. Connecting pin. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] like Figures 1 to 6As shown, this embodiment provides an orthopedic surgical system, including a cutter 1 and a saline circulation mechanism 2. The cutter 1 is used to cut the area where the patient needs surgery, and the saline circulation mechanism 2 is used to provide saline solution to the cut site for disinfection and cooling. The cutter 1 includes a housing 11, a cutting element 12, a drive element 13, and a warning element (not shown). The cutting element 12 is partially housed within the housing 11, and the drive element 13 is also housed within the housing 11. The cutting element 12 has a working end near the cut site and an operating end away from the cut site. The operating end is connected to the drive element 13, which drives the cutting element 12 to rotate, thereby cutting or grinding the surgical site. A sensor 14 is provided near the working end of the cutting element 12 and is connected to the housing 11 to prevent misalignment of the sensor 14 during rotation of the cutting element 12. The sensor 14 can sense the radial and axial forces at the working end, allowing the doctor to fully understand the force on the cutting element 12. This enables the doctor to determine the cutting depth, cutting speed, and the doctor's own operational skills, thus allowing the doctor to accurately control the cutter 1 and the precision of orthopedic surgery, ensuring patient safety. The sensor 14 is electrically connected to the warning element, sending an electrical signal to the warning element so the doctor can directly perceive the force on the cutting element 12 and assess the orthopedic surgery. The drive element 13 can be a motor, and the warning element can be a warning light or a buzzer; the specific form is not limited.

[0041] The orthopedic surgical system provided in this embodiment uses a sensor 14 on the cutting component 12 to sense the radial and axial forces acting on the cutting component 12 during rotation. The radial force of the cutting component 12 helps the surgeon determine the cutting depth and speed. The axial force helps the surgeon determine if the cutting component 12 experiences unstable forces during the surgical procedure, allowing for timely adjustments to the cutting action. The sensor 14 facilitates precise control of the orthopedic surgical procedure, enabling accurate and rapid completion of the surgery and ensuring patient safety.

[0042] For example, such as Figure 1 , Figure 2 and Figure 6As shown, the sensing element 14 has multiple sensing units 141 arranged around the cutting element 12 to perceive the force on the cutting element 12 more accurately and comprehensively, assisting doctors in controlling the precision of surgical operations. Each sensing unit 141 includes an elastic body 1411, a first strain gauge 1412, and a second strain gauge. The elastic body 1411 is located between the housing 11 and the cutting element 12. The first strain gauge 1412 is attached to the surface of the elastic body 1411. If the cutting element 12 shakes during rotation, it will cause deformation of the elastic body 1411. The first strain gauge 1412 will detect the deformation caused by compression, and its resistance will change. The degree of shaking of the cutting element 12 is linearly related to the deformation of the elastic body 1411. Therefore, the radial force on the cutting element 12 can be determined based on the change in the resistance of the first strain gauge 1412. The first strain gauge 1412 is electrically connected to the warning device, which detects the resistance of the first strain gauge 1412. When the resistance detected by the warning device is greater than a certain value or less than a first value, it indicates that the elastomer 1411 is subjected to a certain degree of tension or compression, the cutting element 12 is shaking significantly, and the radial force is unstable. The second strain gauge is embedded inside the elastomer 1411. If the cutting element 12 encounters axial resistance when cutting the patient, the entire cutting element 12 will move backward, and the elastomer 1411 will be stretched and deformed in the axial direction. The second strain gauge will detect the axial deformation of the elastomer 1411, and its resistance will change. The degree of resistance experienced by the cutting element 12 is linearly related to the deformation of the elastomer 1411. Therefore, the axial force of the cutting element 12 can be determined based on the change in the resistance of the second strain gauge. The second strain gauge is electrically connected to the warning device. The warning device can detect the resistance value of the second strain gauge. When the resistance value detected by the warning device is greater than a certain value, it proves that the elastomer 1411 is stretched to a certain extent, the resistance of the cutting element 12 increases, the axial force of the cutting element 12 is unstable, and the doctor's cutting speed is too fast.

[0043] Preferably, the sensing element 14 further includes an inner ring 142 and an outer ring 143, wherein the sensing unit 141 is connected between the inner ring 142 and the outer ring 143, and multiple sensing units 141 are arranged circumferentially at intervals. The inner ring 142 is fitted onto the cutting part 12, and the outer ring 143 is fixed to the inner wall of the housing 11. Thus, when assembling the cutter 1, the operator only needs to fit the inner ring 142 onto the cutting part 12 to complete the assembly of multiple sensing units 141, eliminating the need to install the sensing units 141 one by one, thereby increasing the assembly speed. Both the inner ring 142 and the outer ring 143 are made of elastic material to enable the sensing element 14 to accurately sense the force on the cutting part 12. Preferably, the inner ring 142, the elastic body 1411, and the outer ring 143 are integrated into a single structure so that the sensing element 14 can be processed quickly.

[0044] In this embodiment, as Figures 2 to 5 As shown, the cutting component 12 includes a cutting body 121 and a first bearing 122. One end of the cutting body 121 is connected to the driving component 13, and the other end is provided with a cutting head 1211, so that the driving component 13 drives the cutting head 1211 to rotate. The cutting head 1211 protrudes from the housing 11. The structure of the cutting head 1211 varies, allowing for cutting or grinding of the patient's bone. The first bearing 122 is sleeved on the cutting body 121 and positioned close to the cutting head 1211. When the cutting body 121 rotates, the inner ring of the first bearing 122 rotates while the outer ring remains stationary, which improves the stability of the cutting body 121 during rotation and enhances the convenience for doctors performing orthopedic surgery. Specifically, the inner ring 142 is sleeved on the outer periphery of the first bearing 122.

[0045] In this embodiment, the cutter 1 further includes a locking member 15 and a spring piece 16. Both the locking member 15 and the spring piece 16 are disposed within the housing 11. The locking member 15 is located on the side of the first bearing 122 facing the operating end, and there is a gap between the locking member 15 and the first bearing 122, i.e., the locking member 15 is located behind the first bearing 122. The locking member 15 is connected to the housing 11, and the spring piece 16 is located between the first bearing 122 and the locking member 15. When the cutting member 12 moves backward due to axial resistance, the first bearing 122 will move backward. Since the locking member 15 is connected to the housing 11, the spring piece 16 will be compressed to slow down the backward movement of the cutting member 12, making the cutter 1 more stable during operation. At the same time, the housing 11, the locking member 15, and the spring piece 16 can axially fix the outer ring of the first bearing 122. Specifically, the end of the housing 11 near the working end of the cutting element 12 is stepped, and has a first abutment surface 111 along the extending direction of the cutting element 12. The first abutment surface 111 fits against the front end face of the outer ring of the first bearing 122, and the spring piece 16 abuts against the rear end face of the outer ring of the first bearing 122, so as to restrict the outer ring of the first bearing 122 in the axial direction, improve the installation stability of the first bearing 122, and thus improve the stability of the cutter 1 during operation. The locking element 15 is threadedly connected to the housing 11. The outer wall of the locking element 15 is provided with external threads, and the housing 11 is provided with internal threads. The two are threadedly connected through the cooperation of the external and internal threads.

[0046] Furthermore, the cutter 1 also includes a first fixing member 17, which is located on the side of the first bearing 122 away from the operating end, i.e., in front of the first bearing 122. The first fixing member 17 is connected to the cutting body 121, and is in contact with the front end face of the inner ring of the first bearing 122. A first abutment 1212 is provided on the cutting body 121, wherein the first abutment 1212 is in contact with the rear end face of the inner ring of the first bearing 122. Under the action of the first fixing member 17 and the first abutment 1212, the inner ring of the first bearing 122 can be restricted axially to improve the stability of the first bearing 122 when the cutter 1 is working. Specifically, the first fixing member 17 and the cutting body 121 are threadedly connected. The cutting body 121 has an external thread, and the first fixing member 17 has an internal thread. Of course, the first fixing member 17 and the cutting body 121 can also be connected in other ways, which are not specifically limited here.

[0047] In this embodiment, the cutting element 12 further includes a second bearing 123. The first bearing 122 and the second bearing 123 support the cutting body 121 at both ends of its extension direction, preventing deformation and large-scale shaking during rotation, thereby improving the stability and lifespan of the cutting body 121. A second abutment 1213 is located at the end of the cutting body 121 near the drive element 13. The front end face of the inner ring of the second bearing 123 is in contact with the second abutment 1213. The cutter 1 also includes a second fixing element 18, located between the second bearing 123 and the drive element 13, i.e., behind the second bearing 123. The second fixing element 18 is connected to the cutting body 121. Specifically, the second fixing element 18 is in contact with the rear end face of the inner ring of the second bearing 123. The second abutment 1213 and the second fixing element 18 restrict the inner ring of the second bearing 123 axially. A second abutment surface 112 and a third abutment surface 113 are provided on the inner wall of the housing 11 near the operating end. The second abutment surface 112 is in contact with the front end face of the outer ring of the second bearing 123, and the third abutment surface 113 is in contact with the rear end face of the outer ring of the second bearing 123, thereby restricting the outer ring of the second bearing 123 in the axial direction. This ensures that the second bearing 123 can be stably assembled on the cutting body 121 when the cutting body 121 rotates, improving the stability of the cutter 1 during operation.

[0048] In this embodiment, as Figure 1As shown, the saline circulation mechanism 2 includes a saline delivery component 21, a saline return component 22, and a container. Both the saline delivery component 21 and the saline return component 22 are connected to the container. The saline delivery component 21 includes a connected first pipe and a first suction pump. The outlet of the first pipe faces the patient's incision site, allowing saline solution to be delivered to the incision site for disinfection and cooling. The saline return component 22 includes a second pipe, a second suction pump, and a filter. The inlet of the second pipe faces the patient's incision site. The second suction pump recovers the saline solution from the incision site. The filter, located between the second suction pump and the container, filters out bone fragments and impurities from the recovered saline solution before transferring it to the container for later use. Simultaneously, the bone fragments filtered through the filter can be recovered and used to fill the missing bone portion at the patient's incision site. Since the filtered bone fragments are part of the patient's bone structure, this further aids in the patient's subsequent recovery. To improve the flexibility and convenience of the saline circulation mechanism 2, such as... Figure 8 As shown, in this embodiment, the saline circulation mechanism 2 further includes a trolley 23 with a housing 231 in which the container and filter can be placed. A first suction pump and a second suction pump are mounted on the side wall of the housing 231. A first pipe is connected to the first suction pump, and a second pipe is connected to the second suction pump, facilitating the overall movement of the saline circulation mechanism 2 and improving ease of use for doctors. It is worth noting that the overall structure of the saline circulation mechanism 2 is a conventional technique in the medical field and is not the focus of this invention.

[0049] As a preferred option, such as Figure 1 , Figure 5 and Figure 7As shown, the orthopedic surgical system also includes a locking seat 3, which is used to fix the cutter 1 to external equipment. The first and second pipes are fixed to the housing 11 to ensure accurate delivery and recovery of saline solution. Specifically, the locking seat 3 includes a base 31, a limiting member 32, and a locking bolt 33. The base 31 includes an integral base plate 311 and a main body 312. The main body 312 has a locking hole 3121, in which the cutter 1 is placed. An opening 3122 is provided on the side wall of the main body 312. The shape of the limiting member 32 matches the shape of the opening 3122. One end of the limiting member 32 is rotatably placed within the opening 3122. The limiting member 32 is in contact with the outer surface of the cutter 1, and a protrusion 321 is provided on the side of the limiting member 32 that is in contact with the cutter 1. A corresponding groove 114 is provided on the housing 11 of the cutter 1, and the protrusion 321 can be placed within the groove 114. A locking hole 322 is provided at the other end of the limiting member 32, and a mounting hole opposite to the locking hole 322 is provided on the main body 312. The locking bolt 33 passes through the mounting hole and locks itself in the locking hole 322. By adjusting the locking bolt 33, the clamping degree of the limiting member 32 and the main body 212 on the cutter 1 can be controlled, locking the cutter 1 in the locking hole 3121. A positioning hole is also provided on the base plate 311 to install the cutter 1 with an external device, which can be a robotic arm. The protrusion 321 and the groove 114 can position the cutter 1 and the locking seat 3, ensuring that the cutter 1 will not move relative to the locking hole 3121. Even if the cutter 1 rotates at high speed during operation, it will not move within the locking hole 3121. When adjusting the working position of the cutter 1 using an external device, it can also ensure precise cutting of the patient's cutting area. Regarding how the limiting member 32 is rotated and placed in the opening 3122, for example, the locking seat 3 also includes a connecting pin 34. The limiting member 32 has a first through hole along the width direction, and the two side walls of the opening 3122 along the width direction have opposing second through holes and third through holes. When installing the limiting member 32, the first through hole of the limiting member 32 is aligned with the second through hole and the third through hole. The connecting pin 34 passes through the third through hole, the first through hole and the second through hole in sequence, so that the limiting member 32 can be rotated and placed in the opening 3122.

[0050] In this embodiment, the orthopedic surgical system also includes a nerve monitoring mechanism, which includes a conduction wire, a signal processor, and an electromyography (EMG) detection device. Two conduction wires are provided: one connects the cutter 1 to the signal processor, allowing the doctor to monitor the force applied to the cutter 1 in real time; the other connects to the circumferential measurement and signal processor at the patient's incision site, enabling the doctor to monitor the status of the incision site in real time. Thus, the doctor can control the force of the orthopedic surgical operation based on the force applied to the cutter 1 and the status of the patient's incision site, achieving precise surgical completion and ensuring patient safety.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An orthopedic surgical system, comprising: The cutting device (1) comprises a housing (11), a cutting member (12), a driving member (13) and a warning member, the cutting member (12) is partially arranged in the housing (11), the driving member (13) is arranged in the housing (11), the cutting member (12) comprises a working end close to a cutting position and an operating end away from the cutting position, the operating end is connected with the driving member (13), the cutting member (12) is provided with a sensing member (14) close to the working end, the sensing member (14) is connected with the housing (11), the sensing member (14) can sense the radial force and the axial force of the working end, the sensing member (14) is electrically connected with the warning member; A physiological saline circulating mechanism (2) is arranged for providing physiological saline to the working end and the cutting position; The sensing member (14) has a plurality of sensing units (141), the sensing units (141) are arranged around the cutting member (12), the sensing unit (141) comprises an elastic body (1411), a first strain gauge (1412) and a second strain gauge, the elastic body (1411) is located between the housing (11) and the cutting member (12), the first strain gauge (1412) is attached to the surface of the elastic body (1411), the first strain gauge (1412) is used for sensing the radial force of the working end, the second strain gauge is embedded in the elastic body (1411), and the second strain gauge is used for sensing the axial force of the working end. The sensing member (14) comprises an inner ring (142) and an outer ring (143), the sensing units (141) are connected between the inner ring (142) and the outer ring (143), the sensing units (141) are arranged at intervals, the inner ring (142) is sleeved on the cutting member (12), and the outer ring (143) is fixed to the inner wall of the housing (11).

2. The orthopedic surgical system of claim 1, wherein, The cutting member (12) comprises a cutting main body (121) and a first bearing (122), one end of the cutting main body (121) is connected with the driving member (13), the other end is provided with a cutting head (1211), the first bearing (122) is sleeved on the cutting main body (121) and close to the cutting head (1211), and the inner ring (142) is sleeved on the outer periphery of the first bearing (122).

3. The orthopedic surgical system of claim 2, wherein, The cutting device (1) further comprises a locking member (15) and an elastic sheet (16), the locking member (15) and the elastic sheet (16) are arranged in the housing (11), the locking member (15) is located on one side of the first bearing (122) towards the operating end, the locking member (15) is connected with the housing (11), the elastic sheet (16) is located between the first bearing (122) and the locking member (15), and the housing (11), the locking member (15) and the elastic sheet (16) can limit the outer ring of the first bearing (122) in the axial direction.

4. The orthopedic surgical system of claim 3, wherein, ​ 5. The orthopedic surgical system of claim 4, wherein, The cutter (1) further comprises a first fixing member (17) located on the side of the first bearing (122) away from the operation end, the first fixing member (17) is connected with the cutting body (121), the first fixing member (17) is attached to the front end surface of the inner ring of the first bearing (122), and the cutting body (121) is provided with a first stop portion (1212) attached to the rear end surface of the inner ring of the first bearing (122).

6. The orthopedic surgical system of claim 3, wherein, The cutting member (12) further comprises a second bearing (123), the cutting body (121) further has a second stop portion (1213), the second bearing (123) is sleeved on the cutting body (121), and the front end surface of the second bearing (123) is attached to the second stop portion (1213), the cutter (1) further comprises a second fixing member (18) located between the second bearing (123) and the driving member (13), the second fixing member (18) is connected with the cutting body (121), and the second fixing member (18) and the shell (11) can limit the second bearing (123) in the axial direction.

7. The orthopedic surgical system of claim 1, wherein, The physiological saline circulating mechanism (2) comprises a saline delivery member (21), a saline suction member (22) and a container, the saline delivery member (21) and the saline suction member (22) are connected with the container, the saline delivery member (21) is used for delivering physiological saline to the cutting site, and the saline suction member (22) is used for filtering and delivering the used physiological saline into the container.

8. The orthopedic surgical system of claim 1, wherein, The orthopedic surgery system further comprises a locking seat (3) for fixing the cutter (1) and external equipment, the locking seat (3) comprises a base (31), a limiting member (32) and a locking bolt (33), the base (31) has a locking hole (3121), the cutter (1) is arranged in the locking hole (3121), the limiting member (32) and the locking bolt (33) can lock the cutter (1) in the locking hole (3121), and the limiting member (32) can limit the movement of the cutter (1) relative to the locking hole (3121).

9. The orthopedic surgical system of claim 1, wherein, The orthopedic surgery system further comprises a nerve monitoring mechanism, the nerve monitoring mechanism comprises a conductive wire, a signal processor and an electromyography detection device, the conductive wire is provided with two, one of the conductive wire is connected with the cutter (1) and the signal processor, and the other conductive wire is connected with the periphery of the cutting site and the signal processor.

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