Single leg replacement surgery leg position adjustable support device

Abstract

The present application relates to the field of medical devices, and discloses a surgical leg position infinitely adjustable support device for monoskeleton replacement, which comprises a supporting rod and an adjusting mechanism, two adjusting mechanisms are sleeved on the outer side wall of the supporting rod, a leg supporting plate is fixedly connected to the right side of the adjusting mechanism above the supporting rod, and a U-shaped clamping block is fixedly connected to the right side of the adjusting mechanism below the supporting rod, a movable cavity is symmetrically formed in the U-shaped clamping block, a piston block is slidably connected in the movable cavity, and fixed blocks are symmetrically fixed to the lower surface of the piston block; when supporting the legs of a patient, the U-shaped clamping block can be installed on the mounting strip for installing auxiliary tools at the edge of a hospital bed, then the legs are supported by the leg supporting plate, and the direction can be adjusted by the adjusting mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, more particularly to a surgical leg position infinitely adjustable support device for unicompartmental arthroplasty. BACKGROUND

[0002] Medical devices refer to instruments, equipment, appliances, in-vitro diagnostic reagents and calibrators, materials and other similar or related articles used directly or indirectly for human beings, including the necessary computer software, unicompartmental arthroplasty, also known as partial knee arthroplasty, is compared with total knee arthroplasty, because total knee arthroplasty refers to the repair of the entire articular surface and the replacement of the prosthesis. In fact, osteoarthritis patients are more likely to wear out a single compartment, that is, only a part is worn out, while the other part is good. At this time, it is completely unnecessary to replace the entire knee with a large total knee prosthesis, and a small cartilage pad-like structure is used for partial replacement, which can reduce trauma, shorten operation time, and also shorten the functional recovery time after operation.

[0003] During unicompartmental arthroplasty, a leg support device is often used, but the existing leg support device is simply clamped and fixed between the strip-shaped mounting plate of the bed for installing auxiliary tools and the bed, the leg support is not firm after supporting, and the angle adjustment of the existing leg support device is not convenient, and the device cannot be effectively adjusted in multiple directions according to the needs, so as to achieve better support effect. Therefore, we propose a surgical leg position infinitely adjustable support device for unicompartmental arthroplasty. SUMMARY

[0004] The technical problem solved by the present application is to provide a surgical leg position infinitely adjustable support device for unicompartmental arthroplasty, which can solve the problem that the existing leg support device is simply clamped and fixed between the strip-shaped mounting plate of the bed for installing auxiliary tools and the bed, the leg support is not firm after supporting, and the angle adjustment of the existing leg support device is not convenient, and the device cannot be effectively adjusted in multiple directions according to the needs, so as to achieve better support effect.

[0005] In order to solve the above technical problems, according to one aspect of the present application, more specifically, the surgical leg position infinitely adjustable support device for single skeletal replacement surgery, including support rod and adjusting mechanism, the outer wall of the support rod is sleeved with two adjusting mechanisms, the right side of the adjusting mechanism located above the support rod is fixedly connected with a leg supporting plate, the right side of the adjusting mechanism located below the support rod is fixedly connected with a U-shaped clamping block, the inside of the U-shaped clamping block is symmetrically provided with a movable cavity, the inside of the movable cavity is slidably connected with a piston block, the lower surface of the piston block is fixedly connected with a fixed block, two adjacent fixed blocks are fixedly connected with a cross bar, the outer wall of the cross bar is slidably connected with a rotating connecting piece, the outer wall of the cross bar is sleeved with a spring one, the two ends of the spring one are fixedly connected with the rotating connecting piece and the opposite side of the fixed block, the inside of the rotating connecting piece is rotatably connected with a movable rod through a rotating shaft, the bottom end of the movable rod is rotatably connected with a push rod through a rotating shaft, the right end of the push rod penetrates the inside right side of the movable cavity, and is fixedly connected with a clamping plate, the inside of the movable cavity located on the left side of the inside of the U-shaped clamping block is provided with a through-type exhaust hole on the lower surface, the lower side of the movable cavity located on the right side of the inside of the U-shaped clamping block is provided with a gas pressure cavity, the inside of the gas pressure cavity is slidably connected with a lower stop block, the lower stop block and the gas pressure cavity are fixedly connected with a spring two, the gas pressure cavity and the movable cavity located on the right side of the inside of the U-shaped clamping block are fixedly connected with a gas passage, the upper surface of the U-shaped clamping block is rotatably connected with a bolt one through a rotating shaft, the outer wall of the bolt one is threadedly connected with a U-shaped rod, the bottom two ends of the U-shaped rod penetrate the inside of two movable cavities respectively, and are fixedly connected with the upper surfaces of two piston blocks respectively, and the top end of the bolt one is fixedly connected with a knob one.

[0006] Furthermore, the outer wall of the support rod is provided with anti-skid lines.

[0007] Furthermore, the adjustment mechanism includes an adjustment cylinder, a controller, a first motor, a second motor, a first shaft, a first gear, a second shaft, a first gear disc, a second gear disc, a moving ring, a moving rod, a third spring, a rotating block, a vertical rod, and a second gear. The adjustment cylinder is fitted onto the outer wall of the support rod. The adjustment cylinder is fixedly connected to the controller. An installation cavity is formed on the left side of the adjustment mechanism, and an installation cavity is formed on the right side. A first motor is fixedly connected inside the first installation cavity. The first shaft is fixedly connected to the end of the output shaft of the first motor near the center line of the support rod, and the first gear is fixedly connected to the end of the first shaft away from the first motor. A second motor is fixedly connected inside the second installation cavity. The second shaft is fixedly connected to the right end of the output shaft of the second motor, and the first gear disc is fixedly connected to the right end of the second shaft, located to the right of the adjustment cylinder. The gear disk is fixedly connected to the outer side wall of the second rod near the gear disk. The gear disk is meshed with the opposite side of the gear disk. The moving ring is slidably connected to the interior of the mounting cavity two outside the shaft rod. Multiple springs are fixedly connected between the moving ring and the mounting cavity two. Multiple moving rods are fixedly connected to the right side of the moving ring. The right end of the moving rod extends through to the right side of the adjusting cylinder and is fixedly connected to the left side of the gear disk two. The rotating block is rotatably connected to the outer side wall of the adjusting cylinder outside the support rod via a rotating shaft. The vertical rod is symmetrically fixedly connected to the side of the rotating block away from the adjusting cylinder. A gear two is fixedly connected to the ends of two adjacent vertical rods away from the rotating block. The gear two is located outside the support rod and is slidably connected to the support rod. The gear one is meshed with the gear two.

[0008] Furthermore, the front surface of the adjusting cylinder is provided with a screw hole, and a bolt is threaded into the inside of the screw hole. A knob is fixedly connected to the front end of the bolt.

[0009] Furthermore, both the outer wall of knob one and the outer wall of knob two are provided with multiple arc-shaped openings.

[0010] Furthermore, the outer wall of the support rod is fitted with a sponge sleeve.

[0011] Furthermore, a rubber pad is fixedly connected to the right side of the clamping plate.

[0012] Furthermore, a protective pad is fixedly connected to the inner wall of the leg support plate.

[0013] Furthermore, anti-detachment heads are fixedly connected to both the bottom and top ends of the support rod.

[0014] The beneficial effects of the continuously adjustable surgical leg position support device for unilateral iliac replacement surgery of the present invention are as follows:

[0015] This invention, through the design of a support rod, adjustment mechanism, leg support plate, and U-shaped locking block, allows for support of the patient's legs. The U-shaped locking block is installed onto the mounting strip at the edge of the bed for attaching auxiliary tools. The leg support plate then supports the leg. The adjustment mechanism allows for directional adjustment, making support more convenient and adaptable to different needs. After the U-shaped locking block engages with the corresponding mounting strip, a movable cavity, piston block, fixed block, crossbar, rotating connector, spring, movable rod, push rod, clamping plate, vent hole, U-shaped rod, bolt, and knob are incorporated. The hand-held knob rotates the bolt, causing the U-shaped rod to descend. This lowers the U-shaped rod, pushing the two clamping plates to the right. The left clamping plate rests against the surface of the mounting strip at the edge of the bed, while the right clamping plate rests against a convenient location on the bed. This contact between the two clamping plates ensures a stable connection between the U-shaped locking block and the mounting strip, resulting in more stable support.

[0016] The present invention, through the design of a pneumatic chamber, a lower stop block, a second spring, and a venting groove, allows the gas inside the right movable chamber to be filled into the pneumatic chamber when the piston block on the right descends. This pushes the lower stop block to move to the left, so that the lower stop block can abut against the bottom of the mounting plate. This makes the U-shaped locking block less likely to detach from the mounting plate due to the weight of the legs, resulting in a more secure installation.

[0017] The adjustment mechanism of this invention comprises an adjustment cylinder, a controller, a first motor, a second motor, a first shaft, a first gear, a second shaft, a first gear, a second gear, a third gear, a moving ring, a moving rod, a third spring, a rotating block, a vertical rod, and a second gear. These components, along with mounting cavities one and two, allow the controller to start the first motor, which in turn drives the first gear to rotate. The first gear then drives the adjustment cylinder to rotate along the outer wall of the second gear, adjusting its direction. The controller can also start the second motor, which in turn drives the first gear to rotate. As the first gear rotates, it pushes the second gear towards the adjustment cylinder, separating the first and second gears and facilitating the rotation of the first gear. This allows for easier adjustment of the angle between the adjustment cylinder and the leg support plate or U-shaped locking block. This adjustment mechanism provides more comprehensive directional adjustment, allowing for adjustments to the appropriate angle and position as needed during leg support. It is more convenient to use, and the third spring engages the first and second gears, ensuring greater stability after angle adjustment and making the leg support more secure while reducing the impact on the second motor. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the overall structure of the stepless adjustment support device for the surgical leg position used in unilateral iliac replacement surgery according to the present invention.

[0020] Figure 2 This is a cross-sectional schematic diagram of the U-shaped locking block of the infinitely adjustable surgical leg position support device for unilateral iliac replacement surgery of the present invention.

[0021] Figure 3 This is a cross-sectional schematic diagram of the adjustment mechanism of the stepless adjustment support device for the surgical leg position of the present invention for unilateral iliac replacement surgery.

[0022] Figure 4 This is a side view schematic diagram of the vertical cross-section connection structure of the adjusting cylinder and bolt of the stepless adjustment bracket device for the surgical leg position of the present invention for unilateral iliac replacement surgery.

[0023] Figure 5 This invention relates to a stepless adjustable support device for the surgical leg position in unilateral iliac replacement surgery. Figure 1 A magnified structural diagram at point A;

[0024] Figure 6 This invention relates to a stepless adjustable support device for the surgical leg position in unilateral iliac replacement surgery. Figure 2 A magnified structural diagram at point B.

[0025] In the diagram: 1. Support rod; 2. Adjustment mechanism; 3. Leg support plate; 4. U-shaped locking block; 5. Movable cavity; 6. Piston block; 7. Fixing block; 8. Crossbar; 9. Rotating connector; 10. Spring 1; 11. Movable rod; 12. Push rod; 13. Clamping plate; 14. Exhaust port; 15. Air pressure cavity; 16. Lower stop block; 17. Spring 2; 18. Vent groove; 19. Bolt 1; 20. U-shaped rod; 21. Knob 1; 22. Anti-slip texture; 23. Mounting cavity 1; 24. Mounting cavity 2; 25. 26. Screw hole; 27. Bolt 2; 28. Knob 2; 29. ​​Arc opening; 30. Sponge sleeve; 31. Rubber pad; 32. Protective pad; 33. Anti-detachment head; 201. Adjusting cylinder; 202. Controller; 203. Motor 1; 204. Motor 2; 205. Shaft 1; 206. Gear 1; 207. Shaft 2; 208. Gear disc 1; 209. Gear disc 2; 210. Moving ring; 211. Moving rod; 212. Spring 3; 213. Rotating block; 214. Vertical rod; 215. Gear 2. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0027] According to one aspect of the invention, such as Figures 1-6As shown, a stepless adjustable support device for the surgical leg position in unilateral iliac replacement surgery is provided, including a support rod 1 and an adjustment mechanism 2. Two adjustment mechanisms 2 are sleeved on the outer wall of the support rod 1. A leg support plate 3 is fixedly connected to the right side of the adjustment mechanism 2 located above the support rod 1, and a U-shaped locking block 4 is fixedly connected to the right side of the adjustment mechanism 2 located below the support rod 1. The U-shaped locking block 4 has symmetrically opened movable cavities 5 inside, and a piston block 6 is slidably connected inside the movable cavity 5. Fixed blocks 7 are symmetrically fixedly connected to the lower surface of the piston block 6. A crossbar 8 is fixedly connected between two adjacent fixed blocks 7. A rotating connector 9 is slidably connected to the outer wall of the crossbar 8. A spring 10 is sleeved on the outer wall of the crossbar 8, and the two ends of the spring 10 are respectively connected to the rotating connector. The opposite sides of the rotating connector 9 and the fixed block 7 are fixedly connected. The inner side of the rotating connector 9 is rotatably connected to the movable rod 11 via a rotating shaft. The bottom end of the movable rod 11 is rotatably connected to the push rod 12 via a rotating shaft. The right end of the push rod 12 passes through the inner right side of the movable cavity 5 and is fixedly connected to the clamping plate 13. A through-type exhaust hole 14 is opened on the lower surface of the movable cavity 5 located on the left side of the U-shaped block 4. A pressure chamber 15 is opened below the movable cavity 5 located on the right side of the U-shaped block 4. A lower stop block 16 is slidably connected inside the pressure chamber 15. A spring 17 is symmetrically fixedly connected between the lower stop block 16 and the pressure chamber 15. A vent groove 18 is fixedly connected between the pressure chamber 15 and the movable cavity 5 located on the right side of the U-shaped block 4. The upper surface of the U-shaped block 4 is connected to the movable cavity 5 via a rotating shaft. A shaft is rotatably connected by a bolt 19. A U-shaped rod 20 is threaded onto the outer wall of the bolt 19. The bottom ends of the U-shaped rod 20 penetrate the interiors of two movable cavities 5 and are fixedly connected to the upper surfaces of two piston blocks 6. A knob 21 is fixedly connected to the top of the bolt 19. This invention, through the provided support rod 1, adjustment mechanism 2, leg support plate 3, and U-shaped locking block 4, allows for support of the patient's legs. The U-shaped locking block 4 can be installed onto the mounting strip on the edge of the bed for installing auxiliary tools. The leg support plate 3 then supports the leg. The adjustment mechanism 2 allows for direction adjustment, enabling convenient support as needed. Furthermore, after the U-shaped locking block 4 engages with the corresponding mounting strip, the movable cavity... 5. Piston block 6, fixing block 7, crossbar 8, rotating connector 9, spring 10, movable rod 11, push rod 12, clamping plate 13, vent 14, U-shaped rod 20, bolt 19, and knob 21. The hand-held knob 21 rotates the bolt 19, causing the U-shaped rod 20 to descend, thus pushing the two clamping plates 13 to the right. The left clamping plate 13 then abuts against the surface of the mounting strip on the edge of the bed, while the right clamping plate 13 abuts against a convenient location on the bed. The contact of the two clamping plates 13 ensures a stable connection between the U-shaped block 4 and the mounting strip, resulting in greater stability during support. Furthermore, the included air chamber 15, lower stop 16, spring 17, and vent groove 18 allow the right piston block 6 to descend...The gas inside the right movable chamber 5 can be filled into the air pressure chamber 15, thereby pushing the lower stop 16 to the left. This allows the lower stop 16 to abut against the bottom of the mounting plate, ensuring that the U-shaped locking block 4 is not easily dislodged from the mounting plate due to the weight of the legs, resulting in a more secure installation.

[0028] In this embodiment, the outer wall of the support rod 1 is provided with anti-slip texture 22 to increase the friction between it and the adjustment mechanism 2, making it less likely to slide along the outer side of the support rod 1.

[0029] In this embodiment, the adjustment mechanism 2 includes an adjustment cylinder 201, a controller 202, a first motor 203, a second motor 204, a first shaft 205, a first gear 206, a second shaft 207, a first gear 208, a second gear 209, a moving ring 210, a moving rod 211, a third spring 212, a rotating block 213, a vertical rod 214, and a second gear 215. The adjustment cylinder 201 is fitted onto the outer wall of the support rod 1. The adjustment cylinder 201 is fixedly connected to the controller 202. An installation cavity 23 is opened on the left side of the interior of the adjustment mechanism 2, and an installation cavity 24 is opened on the right side of the interior of the adjustment mechanism 2. The first motor 203 is fixedly connected inside the installation cavity 23. The output shaft of the first motor 203 is fixedly connected to the first shaft 203 at one end near the center line of the support rod 1. 205. Gear 206 is fixedly connected to the end of shaft 205 away from motor 203. Motor 204 is fixedly connected inside mounting cavity 24. Shaft 207 is fixedly connected to the right end of the output shaft of motor 204. Gear 208 is fixedly connected to the right end of shaft 207, located to the right of adjusting cylinder 201. Gear 209 is fixedly connected to the outer wall of shaft 207 near gear 208. Gear 208 and gear 209 are meshed on opposite sides. A moving ring 210 is slidably connected inside mounting cavity 24, located outside shaft 207. Multiple springs 212 are fixedly connected between moving ring 210 and mounting cavity 24. Multiple moving rods 2 are fixedly connected to the right side of moving ring 210. 11. The right end of the moving rod 211 extends through to the right side of the adjusting cylinder 201 and is fixedly connected to the left side of the gear disc 209. The outer wall of the adjusting cylinder 201 is located outside the support rod 1 and is rotatably connected to a rotating block 213 via a rotating shaft. Vertical rods 214 are symmetrically fixedly connected to the side of the rotating block 213 away from the adjusting cylinder 201. A gear 215 is fixedly connected to the end of two adjacent vertical rods 214 away from the rotating block 213. The gear 215 is located outside the support rod 1 and is slidably connected to the support rod 1. Gear 1 206 meshes with gear 215. The adjusting mechanism 2 in this invention consists of the adjusting cylinder 201, controller 202, motor 1 203, motor 2 204, shaft 1 205, and gear 1 206. The shaft 207, gear 1 208, gear 2 209, moving ring 210, moving rod 211, spring 3 212, rotating block 213, vertical rod 214, and gear 215, along with the mounting cavities 1 23 and 2 24, allow the controller 202 to start the motor 1 203, which in turn drives the gear 1 206 to rotate. This allows the gear 1 206 to rotate the adjusting cylinder 201 along the outer wall of gear 2 215, adjusting its direction. The controller 202 can also start the controller 202 to start the motor 2 204, which drives the gear 1 208 to rotate. When the gear 1 208 rotates, it pushes the gear 2 209 towards the adjusting cylinder 201. At this point, the gear 1 208 separates from the gear 2 209, facilitating the rotation of the gear 1 208.This facilitates adjustment of the angle between the adjusting cylinder 201 and the leg support plate 3 or U-shaped locking block 4. The adjusting mechanism 2 offers more comprehensive adjustment directions, allowing for easier adjustment of the appropriate angle and position during leg support, making it more convenient to use. Furthermore, the engagement of the gear disc 1 208 and gear disc 209 via spring 3 212 ensures greater stability after angle adjustment, resulting in more stable leg support and reducing the impact on motor 2 204.

[0030] In this embodiment, a screw hole 25 is provided on the front surface of the adjusting cylinder 201. A bolt 26 is threaded inside the screw hole 25. A knob 27 is fixedly connected to the front end of the bolt 26. By holding the knob 27, the bolt 26 is rotated along the screw hole 25, so that the bolt 26 is in close contact with the outside of the support rod 1, thereby positioning the adjusting cylinder 201 and ensuring that the adjusting mechanism 2 will not slide along the outside of the support rod 1 when supporting the patient's leg.

[0031] In this embodiment, multiple arc-shaped openings 28 are provided on the outer side wall of knob 1 21 and the outer side wall of knob 27, making it convenient to hold knob 1 21 or knob 27 and preventing slippage.

[0032] In this embodiment, the outer wall of the support rod 1 is fitted with a sponge sleeve 29, which is soft, comfortable, and easy to hold.

[0033] In this embodiment, a rubber pad 30 is fixedly connected to the right side of the clamping plate 13 to increase the friction between the clamping plate 13 and the clamping surface and ensure stable clamping.

[0034] In this embodiment, a protective pad 31 is fixedly connected to the inner wall of the leg support plate 3. The soft and comfortable pad makes it more comfortable to support the legs.

[0035] In this embodiment, the bottom and top ends of the support rod 1 are fixedly connected with anti-detachment heads 32 to prevent the adjustment mechanism 2 from detaching from the outside of the support rod 1. The adjustment mechanism 2 can be disassembled by removing the anti-detachment heads 32.

[0036] The working principle of this device is as follows: This invention, through the support rod 1, adjustment mechanism 2, leg support plate 3, and U-shaped locking block 4, supports the patient's legs. The U-shaped locking block 4 is installed onto the mounting strip on the edge of the bed for attaching auxiliary tools. The leg support plate 3 then supports the leg. The adjustment mechanism 2 allows for directional adjustment, making support more convenient as needed. After the U-shaped locking block 4 engages with the corresponding mounting strip, the device utilizes a movable cavity 5, piston block 6, fixing block 7, crossbar 8, rotating connector 9, spring 10, movable rod 11, push rod 12, clamping plate 13, vent 14, U-shaped rod 20, bolt 19, and knob 21. The handheld knob 21 rotates the bolt 19, allowing the patient to... The U-shaped lever 20 descends, thereby pushing the two clamping plates 13 to the right. The left clamping plate 13 then abuts against the surface of the mounting strip at the edge of the bed, while the right clamping plate 13 abuts against a convenient location on the bed. The abutment of the two clamping plates 13 ensures a stable connection between the U-shaped locking block 4 and the mounting strip, thus ensuring greater stability during support. In conjunction with the provided air pressure chamber 15, lower stop 16, spring 17, and air vent 18, when the right piston block 6 descends, it can fill the air pressure chamber 15 with gas from the right movable chamber 5, thereby pushing the lower stop 16 to the left. This allows the lower stop 16 to abut against the bottom of the mounting strip, making it less likely for the U-shaped locking block 4 to detach from the mounting strip due to the weight of the legs, resulting in a more secure installation.

[0037] All electrical components mentioned in this article are real-world electrical components.

[0038] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A stepless adjustable support device for the surgical leg position in unilateral iliac replacement surgery, comprising a support rod (1) and an adjustment mechanism (2), characterized in that: Two adjustment mechanisms (2) are sleeved on the outer wall of the support rod (1). The right side of the adjustment mechanism (2) located above the support rod (1) is fixedly connected to a leg support plate (3). The right side of the adjustment mechanism (2) located below the support rod (1) is fixedly connected to a U-shaped locking block (4). The U-shaped locking block (4) has symmetrically opened movable cavities (5). The movable cavities (5) are slidably connected to a piston block (6). The lower surface of the piston block (6) is symmetrically fixedly connected to a fixing block (7). The two adjacent... A crossbar (8) is fixedly connected to the fixed blocks (7). A rotating connector (9) is slidably connected to the outer wall of the crossbar (8). A spring (10) is sleeved on the outer wall of the crossbar (8). The two ends of the spring (10) are fixedly connected to the opposite side of the rotating connector (9) and the fixed block (7) away from the clamping plate (13), respectively. A movable rod (11) is rotatably connected to the inner side of the rotating connector (9) through a rotating shaft. A push rod (12) is rotatably connected to the bottom end of the movable rod (11) through a rotating shaft. The right end of the push rod (12) penetrates the inside right side of the movable cavity (5) and is fixedly connected to a clamping plate (13). A through-type exhaust hole (14) is opened on the lower surface of the movable cavity (5) located on the left side of the U-shaped block (4). A pneumatic chamber (15) is opened below the movable cavity (5) located on the right side of the U-shaped block (4). A lower stop block (16) is slidably connected inside the pneumatic chamber (15). A spring (17) is symmetrically fixedly connected between the lower stop block (16) and the pneumatic chamber (15). A ventilation groove (18) is fixedly connected between the air pressure chamber (15) and the movable chamber (5) located on the right side inside the U-shaped block (4). The upper surface of the U-shaped block (4) is rotatably connected to a bolt (19) via a rotating shaft. A U-shaped rod (20) is threadedly connected to the outer wall of the bolt (19). The bottom ends of the U-shaped rod (20) pass through the interior of the two movable chambers (5) respectively and are fixedly connected to the upper surfaces of the two piston blocks (6) respectively. A knob (21) is fixedly connected to the top of the bolt (19). By holding the knob (21) to rotate the bolt (19), the U-shaped rod (20) will descend, thereby pushing the two clamping plates (13) to move to the right. Thus, the clamping plate (13) on the left will abut against the surface of the mounting strip on the edge of the bed, and the clamping plate (13) on the right will abut against the edge of the bed. With the help of the air pressure chamber (15), the lower stop (16), the second spring (17), and the ventilation groove (18), when the piston block (6) on the right descends, it will fill the air pressure chamber (15) with the gas inside the right moving chamber (5), thereby pushing the lower stop (16) to move to the left, so that the lower stop (16) abuts against the bottom of the mounting strip.

2. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: The outer wall of the support rod (1) is provided with anti-slip texture (22).

3. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: The adjustment mechanism (2) includes an adjustment cylinder (201), a controller (202), a first motor (203), a second motor (204), a first shaft (205), a first gear (206), a second shaft (207), a first gear disc (208), a second gear disc (209), a moving ring (210), a moving rod (211), a third spring (212), a rotating block (213), a vertical rod (214), and a second gear (215). The adjustment cylinder (201) is fitted with the outer wall of the support rod (1). The adjustment cylinder (201) is fixedly connected to the controller (202). An installation cavity (23) is opened on the left side inside the adjustment mechanism (2). The mechanism (2) has a second mounting cavity (24) on the right side. A motor (203) is fixedly connected inside the first mounting cavity (23). The output shaft of the motor (203) is fixedly connected to the shaft (205) at the end near the center line of the support rod (1). The gear (206) is fixedly connected to the end of the shaft (205) away from the motor (203). The second motor (204) is fixedly connected inside the second mounting cavity (24). The shaft (207) is fixedly connected to the right end of the output shaft of the second motor (204). The right end of the shaft (207) is located on the right side of the adjusting cylinder (201). The gear disc 1 (208) is connected to the shaft 2 (207), and the gear disc 2 (209) is fixedly connected to the outer side wall of the shaft 2 (207) near the gear disc 1 (208). The gear disc 1 (208) and the gear disc 2 (209) are meshed on opposite sides. The moving ring (210) is slidably connected to the interior of the mounting cavity 2 (24) outside the shaft 2 (207). A plurality of springs 3 (212) are fixedly connected between the moving ring (210) and the mounting cavity 2 (24). A plurality of moving rods (211) are fixedly connected to the right side of the moving ring (210). The right end of the moving rod (211) extends through the adjusting cylinder (201). The right side of the adjusting cylinder (201) is fixedly connected to the left side of the gear plate (209). The outer wall of the adjusting cylinder (201) is located outside the support rod (1) and is rotatably connected to the rotating block (213) via a rotating shaft. The rotating block (213) is symmetrically fixedly connected to the vertical rod (214) on the side away from the adjusting cylinder (201). The two adjacent vertical rods (214) are fixedly connected to a gear (215) at the end away from the rotating block (213). The gear (215) is located outside the support rod (1) and is slidably connected to the support rod (1). The gear (206) meshes with the gear (215).

4. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 3, characterized in that: The front surface of the adjusting cylinder (201) is provided with a screw hole (25), and the screw hole (25) is internally threaded with a bolt (26), and the front end of the bolt (26) is fixedly connected with a knob (27).

5. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 4, characterized in that: Multiple arc-shaped openings (28) are provided on the outer wall of the first knob (21) and the outer wall of the second knob (27).

6. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: The outer wall of the support rod (1) is fitted with a sponge sleeve (29).

7. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: A rubber pad (30) is fixedly connected to the right side of the clamping plate (13).

8. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: The inner wall of the leg support plate (3) is fixedly connected with a protective pad (31).

9. The stepless adjustment support device for the surgical leg position in unilateral iliac replacement surgery according to claim 1, characterized in that: The bottom and top ends of the support rod (1) are both fixedly connected with anti-detachment heads (32).

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