Auxiliary mechanical arm for operating table

Abstract

The utility model relates to the technical field of operating table auxiliary equipment, and discloses an operating table auxiliary mechanical arm which comprises an operating table body, a sliding rail is installed on the side face of the operating table body, and an auxiliary mechanical arm body is movably installed on the sliding rail. And the auxiliary mechanical arm body comprises a limiting sliding mechanism, a first telescopic mechanism, a second telescopic mechanism and a limiting buckle mechanism, the limiting sliding mechanism is installed at the bottom of the first telescopic mechanism, and the limiting sliding mechanism is movably arranged on the sliding rail. By arranging the first telescopic mechanism, the whole auxiliary mechanical arm can be driven to move up and down, and the overall height is adjusted according to requirements; the second telescopic mechanism is movably installed above the first telescopic mechanism, and the second telescopic mechanism can be swung, so that the vertical inclination of the whole auxiliary mechanical arm is adjusted. And by arranging the second telescopic mechanism, the transverse length of the whole auxiliary mechanical arm can be adjusted, and therefore the auxiliary mechanical arm can be conveniently used according to requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of operating table auxiliary equipment, specifically an operating table auxiliary robotic arm. Background Technology

[0002] An operating table, also known as an operating bed, supports the patient during surgery and allows for adjustments to the patient's position as needed, providing a convenient surgical environment for the surgeon. The operating table is a fundamental piece of equipment in the operating room. During surgery, auxiliary robotic arms are used to assist in the procedure. Traditional auxiliary robotic arms only provide fixed support and are difficult to adjust according to actual needs. Even with existing adjustable auxiliary robotic arms, their adjustment methods are limited; most can only adjust the corresponding direction of movement using a single adjusting bolt, failing to achieve multi-directional movement with a single bolt, thus presenting limitations. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary robotic arm for a surgical table, which can be adjusted by adjusting bolts to achieve multiple positions of the entire auxiliary robotic arm, making it easy to use.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An auxiliary robotic arm for operating tables includes an operating table body. A slide rail is mounted on the side of the operating table body, and an auxiliary robotic arm body is movably mounted on the slide rail. The auxiliary robotic arm body includes a limiting sliding mechanism, a first telescopic mechanism, a second telescopic mechanism, and a limiting latching mechanism. The limiting sliding mechanism is installed at the bottom of the first telescopic mechanism and is movably disposed on the slide rail. The second telescopic mechanism is movably installed above the first telescopic mechanism, and the limiting latching mechanism is movably installed at the end of the second telescopic mechanism.

[0006] Furthermore, the first telescopic mechanism includes a first storage column, a first movable column, a first inner rod, a first pressure block, and a first bottom rod. The first movable column is movably installed in the first storage column. The first inner rod is located inside the first movable column. A first torsion wheel is connected to the top of the first inner rod, and a first bottom rod is connected to the bottom of the first inner rod. A first return spring is sleeved on the first inner rod, and the bottom of the first return spring abuts against the first bottom rod. Three first grooves are symmetrically opened at the bottom of the first movable column, and a first pressure block is matched in the three first grooves. The cross-section of the first pressure block is generally arranged in a curved trapezoidal shape. Both the inner and outer sides of the first pressure block are curved. The inner side of the first pressure block is movably fitted with the first bottom rod, and the outer side of the first pressure block is movably fitted with the first storage column.

[0007] Furthermore, the limiting sliding mechanism includes an adjusting sleeve, a movable block, a locking pin, and a limiting slide groove. The inner side of the adjusting sleeve is provided with a first internal thread, and the outer side of the bottom end of the first receiving column is provided with a first external thread. The first external thread and the first internal thread are matched and configured. The movable block is slidably disposed on the first receiving column, and the locking pin is fixedly installed at the bottom of the first receiving column. A locking block is connected between the adjusting sleeve and the movable block, and a limiting slide groove is formed between the movable block and the locking pin. The limiting slide groove is locked on the slide rail.

[0008] Furthermore, the top of the first movable column is elliptical, and a first sleeve is movably connected to the top of the first movable column. The top of the first sleeve has a movable slot, which is made up of multiple circles of the same diameter. The bottom of the first torsion wheel is cylindrical and matches the movable slot. The second telescopic mechanism is installed on the side of the first sleeve.

[0009] Furthermore, the second telescopic mechanism includes a second storage column and a second movable column. The end of the second storage column is fixedly connected to the first sleeve head. The second movable column is movably installed in the second storage column. A second inner rod is installed inside the second movable column. A second torsion wheel is movably connected to the end of the second inner rod. A second bottom rod is connected to the end of the second inner rod. A second return spring is sleeved on the second inner rod. Three second grooves are evenly provided on the second movable column. Second pressure blocks are matched in the three second grooves. The cross-section of the second pressure block is generally arranged in a curved trapezoidal shape. Both the inner and outer sides of the second pressure block are curved. The inner side of the second pressure block is movably fitted with the second bottom rod, and the outer side of the second pressure block is movably fitted with the inner wall of the second storage column.

[0010] Furthermore, the end of the second movable column is rounded, and a second sleeve is movably connected to the end of the second movable column. The second sleeve has a groove of the same shape as the first sleeve, and the bottom of the second torsion wheel is movably disposed in the groove. The limiting buckle mechanism is fixedly connected to the second sleeve.

[0011] Furthermore, the limiting buckle mechanism includes a suspension rod and a connecting sleeve. The second sleeve head is fixedly connected to the suspension rod. A third inner rod is movably provided inside the suspension rod. The top of the third inner rod is in movable contact with the end of the second movable column. The bottom of the suspension rod is connected to the connecting sleeve. A movable ball and a downward block are movably provided inside the connecting sleeve. The movable ball is connected to the bottom of the third inner rod. The downward block is movably connected to the movable ball. A limiting groove for fixing surgical instruments is opened on the side of the connecting sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, by setting a first telescopic mechanism, can drive the entire auxiliary robotic arm to move up and down, and adjust the overall height as needed;

[0014] By movably mounting the second telescopic mechanism above the first telescopic mechanism, the second telescopic mechanism can be swung to adjust the vertical tilt of the entire auxiliary robotic arm.

[0015] By setting a second telescopic mechanism, the lateral length of the entire auxiliary robotic arm can be adjusted, making it easier to use the auxiliary robotic arm according to needs;

[0016] By setting a limit buckle mechanism, a second telescopic mechanism can be linked to achieve the limitation and fixation of surgical supplies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the first torsion wheel, the second storage column, and the first movable column in the overall structure of this utility model;

[0020] Figure 4 In this utility model Figure 2 Enlarged view of point A;

[0021] Figure 5 In this utility model Figure 2 Enlarged view of point B;

[0022] Figure 6 In this utility model Figure 2 Enlarged view of point C;

[0023] Figure 7 This is a schematic diagram illustrating the application of this utility model.

[0024] Figure label:

[0025] 01-Operating table body, 02-Slide rail, 1-First storage column, 101-First external thread, 2-Adjusting sleeve, 201-First internal thread, 3-Moving block, 4-Clamping column, 5-First torsion wheel, 6-Second storage column, 7-Second moving column, 8-Limiting slide groove, 9-First moving column, 10-First sleeve, 11-Second sleeve, 12-Suspension rod

[0026] 13-Connecting sleeve, 14-Limiting groove, 15-Second torsion wheel, 16-Modible groove, 17-Modible ball, 18-

[0027] Lowering block, 19-first inner rod, 20-first return spring, 21-second inner rod, 22-first pressure block, 23-first bottom rod, 24-second pressure block, 25-second bottom rod, 26-second return spring, 27-third inner rod, 28-locking block. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] Please see Figure 1-7 An auxiliary robotic arm for operating tables includes an operating table body 01. A slide rail 02 is mounted on the side of the operating table body 01. An auxiliary robotic arm body is movably mounted on the slide rail 02. The auxiliary robotic arm body includes a limiting sliding mechanism, a first telescopic mechanism, a second telescopic mechanism, and a limiting buckle mechanism. The limiting sliding mechanism is installed at the bottom of the first telescopic mechanism and is movably disposed on the slide rail 02. The second telescopic mechanism is movably installed above the first telescopic mechanism. The limiting buckle mechanism is movably installed at the end of the second telescopic mechanism.

[0030] In practical use, by setting up the first telescopic mechanism, the entire auxiliary robotic arm can be moved up and down, and the overall height can be adjusted according to needs; by movably mounting the second telescopic mechanism above the first telescopic mechanism, the second telescopic mechanism can be swung to adjust the vertical tilt of the entire auxiliary robotic arm; by setting up the second telescopic mechanism, the horizontal length of the entire auxiliary robotic arm can be adjusted, thus facilitating the use of the auxiliary robotic arm according to needs; by setting up the limit buckle mechanism, the second telescopic mechanism can be linked to achieve the limit and fixation of surgical supplies.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5In this embodiment, the first telescopic mechanism includes a first storage column 1, a first movable column 9, a first inner rod 19, a first pressure block 22, and a first bottom rod 23. The first movable column 9 is movably installed in the first storage column 1. The first inner rod 19 is disposed inside the first movable column 9. A first torsion wheel 5 is connected to the top of the first inner rod 19, and the first bottom rod 23 is connected to the bottom of the first inner rod 19. A first return spring 20 is sleeved on the first inner rod 19, and the bottom of the first return spring 20 abuts against the first bottom rod 23. Three first grooves are symmetrically opened at the bottom of the first movable column 9, and the first pressure block 22 is matched in the three first grooves. The cross-section of the first pressure block 22 is generally arranged in a trapezoidal shape with an arc. The inner and outer sides of the first pressure block 22 are both arc-shaped. The inner side of the first pressure block 22 is movably fitted with the first bottom rod 23, and the outer side of the first pressure block 22 is movably fitted with the first storage column 1. Specifically, by loosening the first torsion wheel 5, the first inner rod 19 can be loosened in the first movable column 9. Under the action of the first return spring 20, the first pressure block 22 does not abut against the inner wall of the first storage column 1, so that the user can pull the first movable column 9 to adjust the length as needed. Conversely, when it is necessary to fix it, the first torsion wheel 5 is turned in the opposite direction to tighten the first inner rod 19 in the first movable column 9, compress the first return spring 20, so that the first pressure block 22 abuts against the inner wall of the first storage column 1 for limiting.

[0032] Reference Figure 1 and Figure 2 In this embodiment, the limiting sliding mechanism includes an adjusting sleeve 2, a movable block 3, a locking pin 4, and a limiting slide groove 8. The inner side of the adjusting sleeve 2 is provided with a first internal thread 201, and the outer side of the bottom end of the first receiving column 1 is provided with a first external thread 101. The first external thread 101 and the first internal thread 201 are matched and configured. The movable block 3 is slidably disposed on the first receiving column 1, and the locking pin 4 is fixedly installed on the bottom of the first receiving column 1. A locking block 28 is connected between the adjusting sleeve 2 and the movable block 3, and a limiting slide groove 8 is formed between the movable block 3 and the locking pin 4. The limiting slide groove 8 is locked on the slide rail 02. Specifically, by rotating the adjusting sleeve 2, under the action of the first external thread 101 and the first internal thread 201, the movable block 3 can be driven to slide on the first receiving column 1, thereby reducing the distance of the limiting slide groove 8, so as to make it easier to lock the limiting slide groove 8 on the slide rail 02 and limit the entire auxiliary robotic arm.

[0033] Reference Figure 1 , Figure 2 , Figure 3In this embodiment, the top of the first movable column 9 is elliptical, and the top of the first movable column 9 is movably connected to the first sleeve 10. The top of the first sleeve 10 has a movable slot 16, which is made up of multiple circles of the same diameter. The bottom of the first torsion wheel 5 is cylindrical, and the bottom of the first torsion wheel 5 matches the movable slot 16. The second telescopic mechanism is installed on the side of the first sleeve 10. Specifically, by loosening the first torsion wheel 5, the bottom of the first torsion wheel 5 can slide with the movable slot 16, thereby swinging the tilt of the first sleeve 10. Conversely, by tightening the first torsion wheel 5, the first torsion wheel 5 and the movable slot 16 are tightly fitted together. Since the movable slot 16 is made up of multiple circles of the same diameter, after the first torsion wheel 5 and the movable slot 16 are tightly fitted together, the movable slot 16 and the first sleeve 10 cannot continue to move, thereby limiting the swing angle.

[0034] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 In this embodiment, the second telescopic mechanism includes a second storage column 6 and a second movable column 7. The end of the second storage column 6 is fixedly connected to the first sleeve head 10. The second movable column 7 is movably installed in the second storage column 6. A second inner rod 21 is installed inside the second movable column 7. A second torsion wheel 15 is movably connected to the end of the second inner rod 21. A second bottom rod 25 is connected to the end of the second inner rod 21. A second return spring 26 is sleeved on the second inner rod 21. Three second grooves are evenly provided on the second movable column 7. A second pressure block 24 is matched in the three second grooves. The cross-section of the second pressure block 24 is generally arranged in a curved trapezoidal shape. Both the inner and outer sides are arc-shaped. The inner side of the second pressure block 24 is in contact with the second bottom rod 25, and the outer side of the second pressure block 24 is in contact with the inner wall of the second storage column 6. Specifically, by turning the second torsion wheel 15, the second inner rod 21 can move in the second storage column 6. Under the action of the second return spring 26, the second pressure block 24 is not pressed against the inner wall of the second storage column 6. Therefore, the second movable column 7 can be pulled to adjust the lateral length of the entire auxiliary mechanical arm as needed. When it is necessary to fix it, the second torsion wheel 15 is turned in the opposite direction to press against the second inner rod 21. At this time, the outer side of the second pressure block 24 is pressed against the inner wall of the second storage column 6 to achieve the limit.

[0035] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6In this embodiment, the end of the second movable column 7 is rounded, and the end of the second movable column 7 is movably connected to the second sleeve 11. The second sleeve 11 is provided with a groove of the same shape as the first sleeve 10. The bottom of the second torsion wheel 15 is movably disposed in the groove. The limiting buckle mechanism is fixedly connected to the second sleeve 11. Specifically, by turning the second torsion wheel 15, the connection with the second sleeve 11 can be loosened, so that the second sleeve 11 can swing as needed, and the tilt position of the suspension rod 12 and the connecting sleeve 13 can be adjusted according to the actual use requirements.

[0036] Reference Figure 1 , Figure 2 , Figure 6 In this embodiment, the limiting buckle mechanism includes a suspension rod 12 and a connecting sleeve 13. The second sleeve head 11 is fixedly connected to the suspension rod 12. A third inner rod 27 is movably provided inside the suspension rod 12. The top of the third inner rod 27 is in movable contact with the end of the second movable column 7. The bottom of the suspension rod 12 is connected to the connecting sleeve 13. A movable ball 17 and a lowering block 18 are movably provided inside the connecting sleeve 13. The movable ball 17 is connected to the bottom of the third inner rod 27. The lowering block 18 is movably connected to the movable ball 17. A limiting groove 14 for fixing surgical supplies is opened on the side of the connecting sleeve 13. Specifically, when the second torsion wheel 15 is tightened, the end of the second movable column 7 can push the third inner rod 27 in a small range. Through the pushing of the third inner rod 27, the movable ball 17 and the lowering block 18 can be slightly pushed to move, thereby limiting and fixing the surgical supplies placed in the limiting groove 14.

[0037] The movable ball 17 and the lowering block 18 can only move within a small range inside the connecting sleeve 13. They only squeeze and tighten the surgical supplies after the surgical supplies are placed in the limiting slot 14.

[0038] The first sleeve 10 is rotatably mounted at the end of the first movable column 9, which is round-headed. When the first torsion wheel 5 is loosened, the ends of the first sleeve 10 and the first movable column 9 are movable and adjustable, thereby changing the direction of the second telescopic mechanism and adjusting the auxiliary robotic arm from multiple angles. When the first torsion wheel 5 is tightened, the ends of the first sleeve 10 and the first movable column 9 are pressed together, restricting the adjustment of the second telescopic mechanism. Similarly, the second sleeve 11 is rotatably mounted at the end of the second movable column 7, which is round-headed. When the second torsion wheel 15 is loosened, the ends of the second sleeve 11 and the second movable column 7 are movable and adjustable, thereby changing the direction of the limiting buckle mechanism and adjusting the entire auxiliary robotic arm from multiple angles. When the second torsion wheel 15 is tightened, the ends of the second sleeve 11 and the second movable column 7 are pressed together, restricting the adjustment of the limiting buckle mechanism.

[0039] Working principle: The user adjusts the adjusting sleeve 2 according to needs, allowing the entire auxiliary robotic arm to move within the slide rail 02 on the operating table body 01. After moving to the desired position, the adjusting sleeve 2 is tightened, fixing the entire auxiliary robotic arm in the required position on the slide rail 02. After adjustment, the first torsion wheel 5 is loosened, allowing the first movable column 9 to move within the first storage column 1 under the action of the first return spring 20 and the first pressure block 22. Adjusting the height of the first movable column 9 allows the movable slot 16 to move below the first torsion wheel 5, thereby causing the first sleeve head 10 and the second telescopic mechanism to swing, adjusting the swing angle of the entire auxiliary robotic arm. After adjusting the height of the first movable column 9 and the swing angle of the second telescopic mechanism, the first torsion wheel 5 is tightened, ensuring a tight fit between the first torsion wheel 5 and the movable slot 16, restricting the swing of the second telescopic mechanism. Simultaneously, the first torsion wheel 5... The movement of the first pressure block 22 can also drive the first storage column 1 to move and press against the first movable column 9 to limit the first movable column 9. The extension principle of the second telescopic mechanism is the same as that of the first telescopic mechanism. Loosening the second torsion wheel 15 allows the second movable column 7 to move in the second storage column 6. At the same time, the inclination of the suspension rod 12 can be adjusted. After adjustment, according to the surgical needs of the operating table, the corresponding surgical supplies are placed in the limiting slot 14. Tighten the second torsion wheel 15 to limit the second movable column 7. At the same time, the suspension rod 12 is fixed through the slot on the second sleeve 11. During the fixing process, the second sleeve 11 is squeezed, thereby pushing the round end of the second movable column 7 to move. The round end of the second movable column 7 can squeeze the third inner rod 27 downward. By squeezing the third inner rod 27, the movable ball 17 and the lowering block 18 are driven to move down, and the placed surgical supplies are limited and fixed.

[0040] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, 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 this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "linked" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A surgical table-assisted robotic arm, comprising a surgical table body (01), a slide rail (02) mounted on the side of the surgical table body (01), and an auxiliary robotic arm body movably mounted on the slide rail (02), characterized in that: The auxiliary robotic arm includes a limiting sliding mechanism, a first telescopic mechanism, a second telescopic mechanism, and a limiting buckle mechanism. The limiting sliding mechanism is installed at the bottom of the first telescopic mechanism and is movably mounted on the slide rail (02). The second telescopic mechanism is movably mounted above the first telescopic mechanism, and the limiting buckle mechanism is movably mounted at the end of the second telescopic mechanism.

2. The surgical table-assisted robotic arm according to claim 1, characterized in that: The first telescopic mechanism includes a first storage column (1), a first movable column (9), a first inner rod (19), a first pressure block (22), and a first bottom rod (23). The first movable column (9) is movably installed in the first storage column (1). The first inner rod (19) is located inside the first movable column (9). A first torsion wheel (5) is connected to the top of the first inner rod (19), and a first bottom rod (23) is connected to the bottom of the first inner rod (19). A first return spring is sleeved on the first inner rod (19). 20), the bottom of the first return spring (20) abuts against the first bottom rod (23), and the bottom of the first movable column (9) is symmetrically provided with three first grooves, and the three first grooves are matched with first pressure blocks (22). The cross section of the first pressure block (22) is generally set in a trapezoidal shape with an arc. The inner and outer sides of the first pressure block (22) are both set in an arc shape. The inner side of the first pressure block (22) is movably fitted with the first bottom rod (23), and the outer side of the first pressure block (22) is movably fitted with the first storage column (1).

3. The surgical table-assisted robotic arm according to claim 2, characterized in that: The limiting sliding mechanism includes an adjusting sleeve (2), a movable block (3), a locking pin (4), and a limiting slide groove (8). The inner side of the adjusting sleeve (2) is provided with a first internal thread (201), and the outer side of the bottom end of the first storage column (1) is provided with a first external thread (101). The first external thread (101) and the first internal thread (201) are matched and set. The movable block (3) is slidably set on the first storage column (1). The locking pin (4) is fixedly installed on the bottom of the first storage column (1). A locking block (28) is connected between the adjusting sleeve (2) and the movable block (3). A limiting slide groove (8) is formed between the movable block (3) and the locking pin (4). The limiting slide groove (8) is locked on the slide rail (02).

4. The surgical table-assisted robotic arm according to claim 2, characterized in that: The top of the first movable column (9) is elliptical, and the top of the first movable column (9) is movably connected to the first sleeve (10). The top of the first sleeve (10) is provided with a movable slot (16), which is made of multiple circles of the same diameter. The bottom of the first torsion wheel (5) is cylindrical, and the bottom of the first torsion wheel (5) matches the movable slot (16). The second telescopic mechanism is installed on the side of the first sleeve (10).

5. The surgical table-assisted robotic arm according to claim 4, characterized in that: The second telescopic mechanism includes a second storage column (6) and a second movable column (7). The end of the second storage column (6) is fixedly connected to the first sleeve (10). The second movable column (7) is movably installed in the second storage column (6). A second inner rod (21) is installed inside the second movable column (7). A second torsion wheel (15) is movably connected to the end of the second inner rod (21). A second bottom rod (25) is connected to the end of the second inner rod (21). A second return spring (26) is sleeved on the second inner rod (21). Three second grooves are evenly provided on the second movable column (7). A second pressure block (24) is matched in the three second grooves. The cross section of the second pressure block (24) is generally arranged in a trapezoidal shape with an arc. The inner and outer sides of the second pressure block (24) are both arc-shaped. The inner side of the second pressure block (24) is movably fitted with the second bottom rod (25). The outer side of the second pressure block (24) is movably fitted with the inner wall of the second storage column (6).

6. The surgical table-assisted robotic arm according to claim 5, characterized in that: The end of the second movable column (7) is rounded, and the end of the second movable column (7) is movably connected to the second sleeve (11). The second sleeve (11) has a groove of the same shape as the first sleeve (10). The bottom of the second torsion wheel (15) is movably disposed in the groove. The limiting buckle mechanism is fixedly connected to the second sleeve (11).

7. The surgical table-assisted robotic arm according to claim 6, characterized in that: The limiting buckle mechanism includes a suspension rod (12) and a connecting sleeve (13). The second sleeve head (11) is fixedly connected to the suspension rod (12). The suspension rod (12) is movably provided with a third inner rod (27). The top of the third inner rod (27) is movably in contact with the end of the second movable column (7). The bottom of the suspension rod (12) is connected to the connecting sleeve (13). The connecting sleeve (13) is movably provided with a movable ball (17) and a lowering block (18). The movable ball (17) is connected to the bottom of the third inner rod (27). The lowering block (18) is movably connected to the movable ball (17). The side of the connecting sleeve (13) is provided with a limiting groove (14) for fixing surgical instruments.

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