Accurate positioning fracture butt joint robot

Abstract

The invention discloses a precise positioning fracture butt joint robot, and relates to the technical field of medical instruments, the precise positioning fracture butt joint robot comprises a workbench and a first linear module installed at the top of the workbench, a first sliding block is installed at the top of the first linear module, and a second linear module is installed at the top of the first sliding block; an auxiliary butt joint device used for assisting in bone butt joint is arranged on one side of the second linear module. By arranging the expansion assistor, the expansion air bag generates uniform pressure after being expanded, two butted bones can be kept at a relatively stable position, displacement is prevented, and meanwhile, the uniform pressure provided by the expansion air bag can increase the contact area between fracture broken ends, so that the healing condition of bone cells is improved, and the healing effect of the bone cells is improved. Before an internal fixing device such as a steel plate, a nail or an external fixing device of a fracture part is installed, the expansion air bag can provide transient stable support, the operation process of a doctor is simplified, and therefore the overall practicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a robot for accurately positioning fracture joints. Background Art

[0002] Fracture refers to the complete or partial break in the continuity of bone structure. It is one of the common diseases in orthopedics, and limb fracture is the most common among clinical fracture patients. Surgical treatment is the preferred treatment method after limb fracture. When performing surgical treatment on patients with limb fractures, it is first necessary to reduce, dock and fix the two ends of the patient's fracture site. A special fracture docking robot is needed for the reduction and docking of broken bones.

[0003] According to the announcement number "CN 212853610 U" published on the Chinese Patent Network, it is a "precise positioning fracture docking robot". The workbench is provided with left, middle and right lifting rail seats that can be driven to feed forward and backward and left and right. The upper part of the rail seats is connected to the left, middle and right lifting seats by sliding upward and downward. The middle lifting seat is connected to the rotating motor bracket upward and downward. The rotating motor bracket is connected to the distal connecting plate through the first stepper motor in the front and back direction. The distal connecting plate is provided with a palm support plate cavity that passes through the front and back. One side of the palm support plate cavity is rotated and connected to the inner side of one side plate of the distal connecting plate through the support plate rotating shaft. The second stepper motor is arranged on the outer side of the other side plate. The output shaft of the second stepper motor passes through the other side plate of the distal connecting plate and connects to the other side of the palm support plate cavity; the left and right lifting seats are connected to the left and right clamping arms upward and downward, and the left and right clamping arms extend to the outer sides of the left and right manipulators respectively, and the front and rear arm manipulators are arranged relatively inward. It can effectively position, support, fix and stabilize the palm, forearm and upper arm, which is conducive to improving the subsequent rehabilitation effect.

[0004] Although the above patent can achieve the docking of fracture positions, it is unable to compress the fracture after the docking is completed, resulting in poor contact at the fractured part and affecting its healing effect. For this reason, we provide a precise positioning fracture docking robot to solve the above problem. Summary of the invention

[0005] The purpose of the present invention is to provide a robot for accurately positioning fracture joints in order to solve the problem of poor jointing at fractured bones.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a precise positioning fracture docking robot, comprising: a workbench and a first linear module installed on the top of the workbench, a first slider installed on the top of the first linear module, a second linear module installed on the top of the first slider, an auxiliary docking device for assisting bone docking is arranged on one side of the second linear module; a support, the support is fixedly connected to the top of the workbench, and a second supporting base is fixedly connected to the top of the support; an expansion assistant, located on one side of the auxiliary docking device, for pressing the fracture site, and a lateral adjustment component for adjusting its position is arranged at the bottom of the expansion assistant.

[0007] As a further solution of the present invention: the auxiliary docking device includes a second slider installed on one side of the second linear module, one side of the second slider is fixedly connected to a first support base, the top of the first support base and the second support base are fixedly connected to a first fixed block, the top of the first fixed block is fixedly connected to a second U-shaped frame, the inner side of the second U-shaped frame is rotatably connected to a third one-way threaded screw, the outer wall of the third one-way threaded screw is threadedly connected to a first movable block, and one end of the first movable block passes through the inner side of the first fixed block and is fixedly connected to a clamping block.

[0008] As a further scheme of the present invention: the expansion assistant includes two auxiliary rings arranged between the first support base and the second support base, one of the auxiliary rings is fixedly connected to the second support base through a connecting block, and the other auxiliary ring is arranged on one side of the first support base, an expansion airbag is installed on the inner side of the auxiliary ring, and an air guide ring is arranged on the outer side of the auxiliary ring, an electromagnetic valve is fixedly connected to the air inlet of the expansion airbag, one end of the electromagnetic valve passes through the interior of the air guide ring, a bellows is fixedly connected to the air inlet of one of the air guide rings, and a connecting block is fixedly connected to the air inlet of the other air guide ring, a two-way air pump is installed at the air inlet of the connecting block, one end of the bellows is fixedly connected to the end of the connecting block, and an air pressure regulating component for regulating the internal air pressure of the expansion airbag is arranged between the auxiliary ring and the expansion airbag.

[0009] As a further solution of the present invention: four second baffles are fixedly connected to the inner side of the inflatable airbag, and the four second baffles are equidistantly distributed on the inner side of the inflatable airbag, dividing the inflatable airbag into four independent annular cavities, and each of the annular cavities is connected to the interior of the air guide ring through one of the solenoid valves.

[0010] As a further solution of the present invention: the lateral adjustment assembly includes an adjustment seat fixedly connected to the bottom of the first support base, the inner side of the adjustment seat is rotatably connected to a first one-way threaded screw, and one end of the first one-way threaded screw passes through the outside of the adjustment seat, the inner side of the adjustment seat is slidably connected to a moving block, and the moving block is fixedly connected to one of the auxiliary rings, the moving block is threadedly connected to the outer wall of the first one-way threaded screw, and the inner side of the adjustment seat is provided with a limiting sliding groove matching the moving block.

[0011] As a further solution of the present invention: the air pressure regulating component includes a fixed ring fixedly connected to the inner side of the auxiliary ring, a piston compartment is opened on the inner side of the fixed ring, an air guide tube is installed at the air outlet of the piston compartment, one end of the air guide tube passes through the interior of the inflatable airbag, and a piston block is installed on the inner side of the fixed ring.

[0012] As a further solution of the present invention: the air pressure regulating part also includes a first U-shaped frame fixedly connected to one side of the fixing ring, the inner side of the first U-shaped frame is rotatably connected to a second one-way threaded screw, the outer wall of the second one-way threaded screw is threadedly connected to a second movable block, and one end of the second movable block passes through the interior of the fixing ring and is fixedly connected to the piston block.

[0013] As a further solution of the present invention: four first baffles are fixedly connected to the inside of the fixed ring, and four piston blocks are provided. The four piston blocks correspond to an annular cavity inside the expansion airbag respectively, and a piston block is arranged between every two of the first baffles. The four first baffles divide the inside of the fixed ring into four cavities for the piston blocks to move.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting up an expansion assistor, when the fracture site is docked, the expansion airbag is adjusted to the specified position, and the two-way air pump can be started. The two-way air pump supplies external gas into an air guide ring, and then introduces it into the other air guide ring through the connecting block and the bellows, so that the gas rushes into the two expansion airbags, so that the expansion airbags expand and press against the patient's bone site. After the expansion airbags expand, uniform pressure is generated, which can keep the two docked bones in a relatively stable position to prevent displacement. At the same time, the uniform pressure provided by the expansion airbag can increase the contact area between the fracture ends, thereby improving the healing conditions of bone cells. Before installing an internal fixation device such as a steel plate, nail or external fixation device at the fracture site, the expansion airbag can provide short-term stable support, simplify the doctor's operation process, and thus improve the overall practicality of the device;

[0016] 2. By setting a lateral adjustment component, after the fracture site is butt-jointed, when the fracture site is a flat surface, the first one-way threaded screw can be rotated to drive the moving block to drive an inflatable airbag to move to the center of the fracture site. The other inflatable airbag is located at the edge of the fracture site during the placement of the fracture site. When the fracture site is a flat surface, it is moved to the center of the fracture site after the butt-jointed fracture site. The inflatable airbag can be used to compress the fracture site. The inflatable airbag expands at the fracture site and can directly apply pressure to ensure that the fracture ends are closely fitted, reducing the risk of slight dislocation. At the same time, the inflatable airbag surrounds the fracture site. Providing symmetrical and uniform support force is helpful for accurate reduction of fracture ends. This setting avoids applying excessive additional stress to the bone shaft and helps protect bone tissue in other parts. When the fracture site is uneven, one inflatable airbag can be adjusted to the edge of the fracture site, so that the two inflatable airbags can be inflated at the edge of the fracture site. The position of the bones can be adjusted by lever principle, and gradually docked through uniform pulling force. For cases with obvious dislocation or irregular fracture surface shape, this arrangement can help achieve better position adjustment, thereby avoiding poor contact after docking at the fracture site, so that the fracture site can be accurately docked;

[0017] 3. By setting up the air pressure regulating part, when the inflation of the inflatable airbag is completed, the two-way air pump stops running and all the screw solenoid valves are closed. When the staff observes the mobile C-arm X-ray machine to see whether the fracture joint needs to be fine-tuned, they can open the solenoid valve at the position where the air pressure needs to be adjusted according to the position where fine-tuning is required, and then manually rotate the second one-way threaded screw to drive the second movable block to drive the piston block to move inside the piston chamber, so that the inflatable airbag can be supplied with air or exhausted, thereby adjusting the air pressure inside the annular cavity inside the separate inflatable airbag, thereby avoiding overpressure or underpressure caused by automatic control errors. At the same time, due to the different fracture types, bone strengths and surrounding soft tissue conditions of different patients, the manual pressure regulation function can be flexibly adjusted according to the specific situation to avoid a one-size-fits-all fixed pressure, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the support structure of the present invention;

[0020] Figure 3 is a cross-sectional view of an auxiliary ring of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5It is a schematic diagram of the inner structure of the fixing ring of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the piston block of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the expansion airbag of the present invention;

[0025] Figure 8 It is a cross-sectional view of the first movable block of the present invention.

[0026] In the figure: 1. workbench; 2. support; 3. first linear module; 4. first slider; 5. second linear module; 6. second slider; 7. first supporting base; 8. first fixed block; 9. second supporting base; 10. adjusting base; 11. auxiliary ring; 12. air guide ring; 13. bellows; 14. two-way air pump; 15. connecting block; 16. expansion air bag; 17. moving block; 18. first one-way threaded screw; 19. fixing ring; 20. limiting slide groove; 21. piston chamber; 22. piston block; 23. air guide pipe; 24. first U-shaped frame; 25. first movable block; 26. second one-way threaded screw; 27. second movable block; 28. first partition; 29. ​​solenoid valve; 30. second partition; 31. clamping block; 32. second U-shaped frame; 33. third one-way threaded screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0029] Example 1

[0030] See also Figures 1 to 8 The present embodiment provides a precise positioning fracture docking robot, comprising: a workbench 1 and a first linear module 3 installed on the top of the workbench 1, a first slider 4 installed on the top of the first linear module 3, a second linear module 5 installed on the top of the first slider 4, an auxiliary docking device for assisting bone docking is arranged on one side of the second linear module 5, a support 2, the support 2 is fixedly connected to the top of the workbench 1, a second supporting base 9 is fixedly connected to the top of the support 2, the auxiliary docking device comprises a second slider 6 installed on one side of the second linear module 5, a first supporting base 7 is fixedly connected to one side of the second slider 6, a first supporting base 7 and a first fixed block 8 are fixedly connected to the top of the first supporting base 7 and the second supporting base 9, a second U-shaped frame 32 is fixedly connected to the top of the first fixed block 8, a third one-way threaded screw 33 is rotatably connected to the inner side of the second U-shaped frame 32, a first movable block 25 is threadedly connected to the outer wall of the third one-way threaded screw 33, and one end of the first movable block 25 passes through the inner side of the first fixed block 8 and is fixedly connected to a pressing block 31;

[0031] First of all, the linear module can be divided into three types: synchronous belt type, ball screw type, and linear motor type. The synchronous belt type linear module is mainly composed of: belt, linear guide, aluminum alloy profile, coupling, motor, photoelectric switch, etc. The ball screw type linear module is mainly composed of: ball screw, linear guide, aluminum alloy profile, ball screw support seat, coupling, motor, photoelectric switch, etc. Since the first linear module 3 and the second linear module 5 are existing technologies, they are not described too much in this scheme. First, when docking the fracture position, you can first connect the broken part of the fracture. One end is placed on the second support base 9, and the other end is passed through the first support base 7 for placement, and then the third unidirectional threaded screw 33 is rotated respectively, thereby driving the first movable block 25 to mobilize the clamping block 31 to clamp the patient's bone part, and then the staff can manually adjust the first linear module 3 and the second linear module 5 to adjust the position of the first support base 7 respectively, so that the bone fixed on the first support base 7 is docked with the bone fixed on the second support base 9. During the docking process, the staff can observe whether the docking is completed by observing the mobile C-arm X-ray machine.

[0032] Example 2

[0033] An expansion assistor is located on one side of the auxiliary docking device and is used to compress the fracture site. The expansion assistor includes two auxiliary rings 11 arranged between the first support base 7 and the second support base 9, wherein one of the auxiliary rings 11 is fixedly connected to the second support base 9 through a connecting block 15, and the other auxiliary ring 11 is arranged on one side of the first support base 7. An expansion airbag 16 is installed on the inner side of the auxiliary ring 11, and an air guide ring 12 is arranged on the outer side of the auxiliary ring 11. An electromagnetic valve 29 is fixedly connected to the air inlet of the expansion airbag 16, and one end of the electromagnetic valve 29 penetrates into the interior of the air guide ring 12. A bellows 13 is fixedly connected to the air inlet of one air guide ring 12, and a connecting block 15 is fixedly connected to the air inlet of the other air guide ring 12. A two-way air pump 14 is installed at the air inlet of the connecting block 15, and one end of the bellows 13 is fixedly connected to the end of the connecting block 15;

[0034] A lateral adjustment component for adjusting the position of the expansion assistor is provided at the bottom of the expansion assistor, and the lateral adjustment component includes an adjustment seat 10 fixedly connected to the bottom of the first support base 7, a first one-way threaded screw 18 is rotatably connected to the inner side of the adjustment seat 10, and one end of the first one-way threaded screw 18 passes through the outside of the adjustment seat 10, a moving block 17 is slidably connected to the inner side of the adjustment seat 10, and the moving block 17 is fixedly connected to an auxiliary ring 11, the moving block 17 is threadedly connected to the outer wall of the first one-way threaded screw 18, and a limiting slide groove 20 matching the moving block 17 is opened on the inner side of the adjustment seat 10;

[0035] When the fracture site is docked, and the expansion airbag 16 is adjusted to the specified position, the two-way air pump 14 can be started. The two-way air pump 14 supplies external gas into one air guide ring 12, and then introduces it into the other air guide ring 12 through the connecting block 15 and the bellows 13, so that the gas rushes into the two expansion airbags 16, so that the expansion airbags 16 expand and press against the patient's bone site. After the expansion airbags 16 expand, uniform pressure is generated, which can keep the two docked bones in a relatively stable position to prevent displacement. At the same time, the uniform compression force provided by the expansion airbag 16 can increase the contact area between the fracture ends, thereby improving the healing conditions of bone cells. Before installing an internal fixation device such as a steel plate, nails or an external fixation device at the fracture site, the expansion airbag 16 can provide short-term stable support, simplify the doctor's operation process, and thus improve the overall practicality of the device;

[0036] After the fracture site is butted, when the fracture site is a flat surface, the first one-way threaded screw 18 can be rotated to drive the moving block 17 to drive an expansion airbag 16 to move to the center of the fracture site. The other expansion airbag 16 is located at the edge of the fracture site during the placement of the fracture site. When the fracture site is a flat surface, it is moved to the center of the fracture site after butt connection. The expansion airbag 16 can be used to compress the fracture site. The expansion airbag 16 expands at the fracture site and can directly apply pressure to ensure that the fracture ends are closely fitted and reduce minor dislocations. Risk, at the same time, the inflatable airbag 16 surrounds the fracture, providing symmetrical and uniform support, which is helpful for accurate reduction of the fracture end. This setting avoids applying too much additional stress to the backbone part and helps to protect bone tissue in other parts. When the fracture site is uneven, one inflatable airbag 16 can be adjusted to the edge of the fracture site, so that the two inflatable airbags 16 are inflated at the edge of the fracture site, and the position of the bones can be adjusted by the principle of leverage, and gradually docked through uniform pulling force. For cases where dislocation is obvious or the shape of the fracture surface is irregular, this arrangement can help achieve better position adjustment.

[0037] Example 3

[0038] An air pressure regulating member for regulating the internal air pressure of the inflatable airbag 16 is provided between the auxiliary ring 11 and the inflatable airbag 16. Four second baffles 30 are fixedly connected to the inner side of the inflatable airbag 16. The four second baffles 30 are equidistantly distributed on the inner side of the inflatable airbag 16, dividing the inflatable airbag 16 into four independent annular cavities. Each annular cavity is connected to the inside of the air guide ring 12 through an electromagnetic valve 29. The air pressure regulating member includes a fixed ring 19 fixedly connected to the inner side of the auxiliary ring 11. A piston chamber 21 is provided on the inner side of the fixed ring 19. An air guide tube 23 is installed at the air outlet of the piston chamber 21. One end of the air guide tube 23 passes through the interior of the inflatable airbag 16. A piston block is installed on the inner side of the fixed ring 19. 22, the air pressure regulating member also includes a first U-shaped frame 24 fixedly connected to one side of the fixed ring 19, the inner side of the first U-shaped frame 24 is rotatably connected to a second one-way threaded screw 26, the outer wall of the second one-way threaded screw 26 is threadedly connected to a second movable block 27, and one end of the second movable block 27 penetrates into the interior of the fixed ring 19 and is fixedly connected to the piston block 22, the interior of the fixed ring 19 is fixedly connected to four first baffles 28, four piston blocks 22 are provided, and the four piston blocks 22 correspond to an annular cavity inside the expansion airbag 16 respectively, and a piston block 22 is provided between every two first baffles 28, and the four first baffles 28 divide the interior of the fixed ring 19 into four cavities for the piston block 22 to move;

[0039] When the inflation of the inflation bag 16 is completed, the two-way air pump 14 stops running and the screw solenoid valve 29 is completely closed. When the staff observes the mobile C-arm X-ray machine to see whether the fracture joint needs to be fine-tuned, they can open the solenoid valve 29 at the position where the air pressure needs to be adjusted according to the position where fine-tuning is required, and then manually rotate the second one-way threaded screw 26 to drive the second movable block 27 to drive the piston block 22 to move inside the piston chamber 21, so that the inflation bag 16 can be supplied with air or exhausted, thereby adjusting the air pressure inside the annular cavity inside the individual inflation bag 16, thereby avoiding overpressure or underpressure caused by automatic control errors. At the same time, due to the different fracture types, bone strengths and surrounding soft tissue conditions of different patients, the manual pressure adjustment function can be flexibly adjusted according to the specific situation to avoid a one-size-fits-all fixed pressure, thereby improving the overall practicality of the device.

[0040] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A robot for accurately positioning fracture joints, characterized in that: include: A workbench (1) and a first linear module (3) mounted on the top of the workbench (1), a first slider (4) being mounted on the top of the first linear module (3), a second linear module (5) being mounted on the top of the first slider (4), and an auxiliary docking device for assisting bone docking being arranged on one side of the second linear module (5); A support (2), the support (2) being fixedly connected to the top of the workbench (1), and the top of the support (2) being fixedly connected to a second supporting base (9); The expansion assistant is located at one side of the auxiliary docking device and is used to compress the fracture site. A lateral adjustment component for adjusting the position of the expansion assistant is provided at the bottom of the expansion assistant.

2. The precise positioning fracture docking robot according to claim 1, characterized in that: The auxiliary docking device comprises a second slider (6) installed on one side of the second linear module (5); one side of the second slider (6) is fixedly connected to a first supporting base (7); the tops of the first supporting base (7) and the second supporting base (9) are fixedly connected to a first fixed block (8); the top of the first fixed block (8) is fixedly connected to a second U-shaped frame (32); the inner side of the second U-shaped frame (32) is rotatably connected to a third one-way threaded screw (33); the outer wall of the third one-way threaded screw (33) is threadedly connected to a first movable block (25); and one end of the first movable block (25) passes through the inner side of the first fixed block (8) and is fixedly connected to a clamping block (31).

3. The precise positioning fracture docking robot according to claim 2, characterized in that: The expansion assistant comprises two auxiliary rings (11) arranged between the first supporting base (7) and the second supporting base (9), wherein one of the auxiliary rings (11) is fixedly connected to the second supporting base (9) via a connecting block (15), and the other auxiliary ring (11) is arranged on one side of the first supporting base (7), an expansion airbag (16) is installed on the inner side of the auxiliary ring (11), an air guide ring (12) is arranged on the outer side of the auxiliary ring (11), an electromagnetic valve (29) is fixedly connected to the air inlet of the expansion airbag (16), and the electromagnetic valve (29) is fixedly connected to the air inlet of the expansion airbag (16). One end of the valve (29) penetrates into the interior of the air guide ring (12); a bellows (13) is fixedly connected to the air inlet of one of the air guide rings (12); a connecting block (15) is fixedly connected to the air inlet of the other air guide ring (12); a two-way air pump (14) is installed at the air inlet of the connecting block (15); one end of the bellows (13) is fixedly connected to the end of the connecting block (15); and an air pressure regulating component for regulating the internal air pressure of the expanding air bag (16) is provided between the auxiliary ring (11) and the expanding air bag (16).

4. The precise positioning fracture docking robot according to claim 3, characterized in that: Four second baffles (30) are fixedly connected to the inner side of the expansion airbag (16). The four second baffles (30) are equidistantly distributed on the inner side of the expansion airbag (16) to divide the expansion airbag (16) into four independent annular cavities. Each of the annular cavities is connected to the interior of the air guide ring (12) via one of the solenoid valves (29).

5. The precise positioning fracture docking robot according to claim 4, characterized in that: The lateral adjustment assembly comprises an adjustment seat (10) fixedly connected to the bottom of the first supporting base (7); a first one-way threaded screw (18) is rotatably connected to the inner side of the adjustment seat (10), and one end of the first one-way threaded screw (18) passes through the outside of the adjustment seat (10); a moving block (17) is slidably connected to the inner side of the adjustment seat (10), and the moving block (17) is fixedly connected to one of the auxiliary rings (11); the moving block (17) is threadedly connected to the outer wall of the first one-way threaded screw (18); and a limiting sliding groove (20) matching the moving block (17) is provided on the inner side of the adjustment seat (10).

6. The precise positioning fracture docking robot according to claim 5, characterized in that: The air pressure regulating component comprises a fixing ring (19) fixedly connected to the inner side of the auxiliary ring (11); a piston chamber (21) is provided on the inner side of the fixing ring (19); an air guide tube (23) is installed at the air outlet of the piston chamber (21); one end of the air guide tube (23) passes through the interior of the inflation airbag (16); and a piston block (22) is installed on the inner side of the fixing ring (19).

7. The precise positioning fracture docking robot according to claim 6, characterized in that: The gas pressure regulating component also includes a first U-shaped frame (24) fixedly connected to one side of the fixing ring (19), the inner side of the first U-shaped frame (24) is rotatably connected to a second one-way threaded screw (26), the outer wall of the second one-way threaded screw (26) is threadedly connected to a second movable block (27), and one end of the second movable block (27) passes through the interior of the fixing ring (19) and is fixedly connected to the piston block (22).

8. The precise positioning fracture docking robot according to claim 7, characterized in that: Four first baffles (28) are fixedly connected inside the fixing ring (19), and four piston blocks (22) are provided. The four piston blocks (22) respectively correspond to an annular cavity inside the expansion airbag (16), and a piston block (22) is provided between every two of the first baffles (28). The four first baffles (28) divide the inside of the fixing ring (19) into four cavities for the piston blocks (22) to move.

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