Hip replacement surgery position support device and system

Abstract

The utility model discloses a kind of hip joint replacement operation body position supporting device and system, belong to medical instrument technical field, the hip joint replacement operation body position supporting device includes front side support and rear side support being oppositely arranged and being respectively used for with the both sides rail connection of operating table, the front side support is equipped with for abutting against the pillow of patient pubic symphysis or iliac anterior superior spine, the rear side support is equipped with for abutting against the back pillow of patient back, the front side support and rear side support all include the adjusting mechanism that can adjust the pillow / back pillow space position and inclination angle.The hip joint replacement operation body position supporting device and system of the utility model can realize lateral decubitus position quick placement and guarantee the stability and accuracy of body position.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a hip replacement surgery positioning support device and system. Background Technology

[0002] Hip replacement surgery, also known as artificial hip replacement, involves placing an artificial prosthesis, comprising the femoral and acetabular portions, onto healthy bone using bone cement and screws to replace the diseased joint and restore normal hip function. It is a relatively mature and reliable treatment method. Early procedures only replaced the artificial femoral head, commonly known as hemi-hip replacement, but later evolved to total hip replacement. Osteoarthritis, femoral head necrosis, femoral neck fracture, rheumatoid arthritis, traumatic arthritis, benign and malignant bone tumors, ankylosing spondylitis, etc., are indications for hip replacement surgery if there are X-ray signs of joint destruction, accompanied by moderate to severe persistent joint pain and functional impairment that cannot be relieved by other non-surgical treatments. With technological advancements, artificial prostheses are made from various materials, including stainless steel, titanium alloy, and ceramic. Some patients experience postoperative pain and significant prosthesis loosening.

[0003] The lateral decubitus position is a surgical position used during hip replacement surgery. This position involves placing the patient naturally on their side with their head turned to the side, both legs naturally flexed and separated forward and backward, and arms naturally extended forward. Various special lateral decubitus positions can be used depending on the surgical site and procedure. This position helps reduce intracranial pressure, minimizing postoperative complications such as increased intracranial pressure and cerebral edema. It also maintains a clear airway, facilitating postoperative respiratory function recovery. The lateral decubitus position ensures patient safety and comfort. However, current techniques often rely on manual adjustment of the lateral decubitus position. Since patients vary in weight, adjusting the position is difficult for heavier patients, leading to inefficiency. Furthermore, maintaining stability and accuracy during adjustment is challenging, and manual adjustment may cause unnecessary stress and discomfort to the patient.

[0004] Utility model patent 201720690089.8 discloses a surgical lateral decubitus fixation pad. This utility model allows all parts of the body to maintain a comfortable lateral decubitus position. The pelvis is fixed by a fixing block on the pelvic fixation groove and a strap, making the operation simpler and the body position easier to meet surgical requirements. While this utility model uses a pelvic fixation groove to support the pelvis and straps to fix the patient, it still does not completely solve the aforementioned problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a hip replacement surgery positioning support device and system to achieve rapid placement in the lateral decubitus position while ensuring the stability and accuracy of the position.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] On the one hand, this utility model provides a hip replacement surgery positioning support device, including a front support and a rear support arranged opposite to each other and respectively used for connecting to the side rails on both sides of the operating table. The front support is provided with a cushion for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support is provided with a back pillow for abutting against the patient's back. Both the front support and the rear support include an adjustment mechanism that can adjust the spatial position and tilt angle of the cushion / back pillow.

[0008] Furthermore, the adjustment mechanism includes a horizontal position adjustment component, which includes a fixing clamp slidably connected to the side rail of the operating table, and the fixing clamp is provided with a locking bolt for locking the relative position of the fixing clamp and the operating table.

[0009] Furthermore, the adjustment mechanism also includes a height adjustment component. The fixing clamp is provided with a vertical insertion hole. The height adjustment component includes a support rod. The support rod includes a sliding plate portion that passes through the vertical insertion hole. The end of the locking bolt abuts against one side of the sliding plate portion, so that the other side of the sliding plate portion abuts against the side rail of the operating table, thereby locking the relative positions of the support rod, the fixing clamp, and the operating table.

[0010] Furthermore, the sliding plate is provided with size markings;

[0011] And / or, the fixing clip is C-type;

[0012] And / or, the vertical insertion hole is a square hole.

[0013] Furthermore, the adjustment mechanism also includes an angle adjustment assembly, which includes a connecting shaft. The connecting shaft includes a vertical rod portion connected to the upper end of the support rod and a horizontal rod portion located at the upper end of the vertical rod portion. The angle adjustment assembly also includes a fixed shaft disposed opposite to the horizontal rod portion and used for mounting the cushion / backrest. The end faces of the horizontal rod portion and the fixed shaft opposite to each other are provided with mutually cooperating bevel tooth structures. The end of the horizontal rod portion away from the fixed shaft is provided with a longitudinal angle locking bolt that passes through the horizontal rod portion and the fixed shaft to axially tighten and lock the two together.

[0014] Furthermore, the support rod also includes a plug-in portion located at the upper end of the slide plate portion, the vertical rod portion is sleeved on the plug-in portion, and the vertical rod portion is provided with a lateral angle locking bolt for locking the relative position of the connecting shaft and the support rod.

[0015] Furthermore, the adjustment mechanism also includes a front-to-back distance adjustment component. Each of the cushions / backrests has a movable rod at one end near the fixed shaft. The movable rod passes through the fixed shaft radially. The fixed shaft has a front-to-back distance locking bolt at one end away from the connecting shaft for locking the relative position of the movable rod and the fixed shaft.

[0016] Furthermore, the movable rod is provided with knurled texture;

[0017] And / or, the longitudinal angle locking bolt is provided with a retaining ring;

[0018] And / or, the ends of the front and rear distance locking bolts are frustoconical.

[0019] Furthermore, the end face of the pillow closest to the patient is a concave spherical shape;

[0020] And / or, the cushion is made of PU leather;

[0021] And / or, the end face of the back pillow near the patient is concave arc-shaped;

[0022] And / or, the backrest is made of PU leather.

[0023] On the other hand, this utility model provides a hip replacement surgery positioning support system, including an operating table, on which the above-mentioned hip replacement surgery positioning support device is provided on the side rails of the operating table.

[0024] This utility model has the following beneficial effects:

[0025] This utility model discloses a hip replacement surgery positioning support device and system. The hip replacement surgery positioning support device includes a front support and a rear support arranged opposite each other. The front support and the rear support are respectively used to connect to the side rails of the operating table for easy use. The front support is equipped with a cushion for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support is equipped with a back pillow for abutting against the patient's back, which can accommodate patients of different weights and has a good fixation effect. Both the front support and the rear support include adjustment mechanisms that can adjust the spatial position and tilt angle of the cushion / back pillow. The patient only needs to lie on their side on the operating table, and the spatial position and tilt angle of the cushion / back pillow can be adjusted by adjusting the adjustment mechanism to adapt to the patient. Therefore, the surgical position can be adjusted without moving the patient. The manual adjustment of the surgical position is convenient, quick and efficient. At the same time, the method of clamping and fixing the patient with the front support and the rear support ensures the stability and accuracy of the position during and after adjustment. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the front support of the hip replacement surgery positioning support device of this utility model, wherein (a) is a structural diagram in one direction, (b) is a structural diagram in another direction, and (c) is a structural diagram in yet another direction;

[0027] Figure 2 This is a schematic diagram of the rear support of the hip replacement surgery positioning support device of this utility model;

[0028] Figure 3 for Figure 1 A schematic diagram of the exploded structure;

[0029] Figure 4 for Figure 3 Schematic diagram of the middle fixing clip;

[0030] Figure 5 for Figure 3 A structural diagram of the support rod, wherein (a) is a structural diagram in one direction and (b) is a structural diagram in another direction;

[0031] Figure 6 for Figure 3 A schematic diagram of the cooperation structure between the horizontal position adjustment component and the height adjustment component;

[0032] Figure 7 for Figure 3 A schematic diagram of the connecting shaft is shown, where (a) is a structural diagram in one direction and (b) is a structural diagram in another direction;

[0033] Figure 8 for Figure 3 A structural schematic diagram of the fixed axis in the middle, wherein (a) is a structural diagram in one direction, (b) is a front view, and (c) is a sectional view of (b) along the AA direction;

[0034] Figure 9 for Figure 3 Schematic diagram of the longitudinal angle locking bolt;

[0035] Figure 10 for Figure 3 Schematic diagram of the front-to-back distance locking bolt;

[0036] Figure 11 for Figure 3 A schematic diagram of the structure of the cushion, wherein (a) is a structural diagram in one direction and (b) is a structural diagram in another direction;

[0037] Figure 12 for Figure 2 A schematic diagram of the structure of the back pillow, wherein (a) is a structural diagram in one direction, (b) is a structural diagram in another direction, and (c) is a structural diagram in yet another direction;

[0038] Figure 13 This is a schematic diagram of the hip replacement surgery positioning support system of this utility model. Detailed Implementation

[0039] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0041] On the one hand, this utility model provides a positional support device for hip replacement surgery, such as... Figure 1-13 As shown, it includes a front support 2 and a rear support 3 that are arranged opposite to each other and are respectively used to connect to the side rails 11 on both sides of the operating table 1. The front support 2 is provided with a cushion 21 for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support 3 is provided with a back pillow 31 for abutting against the patient's back. Both the front support 2 and the rear support 3 include adjustment mechanisms that can adjust the spatial position and tilt angle of the cushion 21 / back pillow 31.

[0042] When in use, before hip replacement surgery, the patient is placed in a lateral decubitus position. First, the front support 2 is adjusted by the adjustment mechanism so that the pillow 21 is pressed against the appropriate part of the patient. That is, when the patient is lighter, it can be pressed against the anterior superior iliac spine, and when the patient is heavier, it can be pressed against the pubic symphysis. Then, the rear support 3 is adjusted by the adjustment mechanism so that the back pillow 31 is pressed against the patient's back to fix the patient's position.

[0043] This utility model discloses a hip replacement surgery positioning support device, comprising a front support and a rear support arranged opposite to each other. The front and rear supports are respectively used to connect to the side rails of the operating table for easy use. The front support is equipped with a cushion for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support is equipped with a back pillow for abutting against the patient's back, which can accommodate patients of different weights and provide good fixation. Both the front and rear supports include adjustment mechanisms that can adjust the spatial position and tilt angle of the cushion / back pillow. The patient only needs to lie on their side on the operating table, and the spatial position and tilt angle of the cushion / back pillow can be adjusted by adjusting the mechanism to suit the patient, thus completing the surgical position adjustment without moving the patient. The manual adjustment of the surgical position is convenient, quick and efficient. At the same time, the method of clamping and fixing the patient with the front and rear supports ensures the stability and accuracy of the position during and after adjustment.

[0044] like Figure 4 As shown, the adjustment mechanism may include a horizontal position adjustment component, which includes a fixing clip 22 / 32 slidably connected to the operating table side rail 11. The fixing clip 22 / 32 is provided with a locking bolt 23 / 33 for locking the relative position of the fixing clip 22 / 32 and the operating table 1. In this way, the front support 2 and the rear support 3 can move horizontally on the operating table side rail 11. When adjusted to a suitable position, the locking bolt 23 / 33 on the fixing clip 22 / 32 can be tightened. At this time, the front support 2 and the rear support 3 are fixed on the operating table side rail 11, which not only realizes the adjustment of the horizontal position, but also has low cost.

[0045] Preferably, the fixing clips 22 / 32 are C-shaped, which facilitates sliding connection to the operating table side rails 11.

[0046] like Figure 4-6 As shown, the adjustment mechanism may further include a height adjustment component. The fixing clip 22 / 32 has a vertical insertion hole 221 / 321. The height adjustment component includes a support rod 24 / 34. The support rod 24 / 34 includes a sliding plate portion 241 / 341 that passes through the vertical insertion hole 221 / 321. The end of the locking bolt 23 / 33 abuts against one side of the sliding plate portion 241 / 341, causing the other side of the sliding plate portion 241 / 341 to abut against the operating table side rail 11, thereby locking the relative positions of the support rod 24 / 34, the fixing clip 22 / 32, and the operating table 1. This design is convenient to use and inexpensive.

[0047] Preferably, the vertical insertion hole 221 / 321 is a square hole. The sliding plate portion 241 / 341 of the support rod 24 / 34 passes through the square hole of the fixing clip 22 / 32, and the side rail 11 passes through the C-shaped hole of the fixing clip 22 / 32 for connection. By tightening the locking bolt 23 / 33, the support rod 24 / 34, the fixing clip 22 / 32, and the side rail 11 are simultaneously fixed. The sliding plate portion 241 / 341 may be provided with size scales to facilitate doctors in confirming and adjusting the height.

[0048] The adjustment mechanism may also include an angle adjustment component, which can take various forms as conceived by those skilled in the art, such as a gear system, rack and pinion, or universal joint, preferably, such as... Figure 3 and Figure 7-9 As shown, this utility model adopts the following method:

[0049] The angle adjustment assembly includes a connecting shaft 25 / 35, which comprises a vertical rod portion 251 / 351 connected to the upper end of the support rod 24 / 34 and a horizontal rod portion 252 / 352 located at the upper end of the vertical rod portion 251 / 351. The assembly also includes a fixed shaft 26 / 36 opposite to the horizontal rod portion 252 / 352 and used for mounting the cushion 21 / backrest 31. The end faces of the horizontal rod portion 252 / 352 and the fixed shaft 26 / 36 have mating bevel gear structures. The end of the horizontal rod portion 252 / 352 away from the fixed shaft 26 / 36 has a longitudinal angle locking bolt 27 / 37 that passes through both the horizontal rod portion 252 / 352 and the fixed shaft 26 / 36 to axially tighten and lock them together. Thus, the longitudinal angle can be adjusted by rotating the fixed shaft 26 / 36, and the longitudinal angle can be locked by tightening the longitudinal angle locking bolt 27 / 37, making it convenient to use.

[0050] A retaining ring 271 / 371 may be provided on the longitudinal angle locking bolt 27 / 37. In specific implementation, the retaining ring 271 / 371 abuts against the outer end face of the crossbar portion 252 / 352 (i.e., the end face away from the fixed shaft 26 / 36). The fixed shaft 26 / 36 is provided with a bolt hole A. The longitudinal angle locking bolt 27 / 37 is provided with a thread that mates with the bolt hole A of the fixed shaft 26 / 36. When the longitudinal angle locking bolt 27 / 37 is tightened, the longitudinal angle locking bolt 27 / 37 can pass through the crossbar portion 252 / 352 and the fixed shaft 26 / 36 to axially tighten and lock the two.

[0051] In this way, the end faces of the fixed shaft 26 / 36 and the connecting shaft 25 / 35 (crossbar part 252 / 352) are provided with bevel tooth structure. When the longitudinal angle locking bolt 27 / 37 is tightened, the convex teeth on the end face of the fixed shaft 26 / 36 are engaged with the concave teeth on the end face of the connecting shaft 25 / 35 to complete the angle locking, which is convenient to use.

[0052] The support rod 24 / 34 may also include a connector 242 / 342 located at the upper end of the slide plate 241 / 341, with the vertical rod 251 / 351 sleeved on the connector 242 / 342. The vertical rod 251 / 351 is provided with a lateral angle locking bolt 28 / 38 for locking the relative position of the connecting shaft 25 / 35 and the support rod 24 / 34. In this way, the connecting shaft 25 / 35 can rotate laterally on the support rod 24 / 34, making it convenient to use.

[0053] In practice, the transverse angle locking bolt 28 / 38 is provided with threads that cooperate with the bolt holes D of the vertical rod 251 / 351. After the connecting shaft 25 / 35 is rotated laterally to the appropriate position, the transverse angle locking bolt 28 / 38 can be tightened to lock the transverse angle.

[0054] like Figure 3 , Figure 8 and Figure 10 As shown, the adjustment mechanism may also include a front-to-back distance adjustment component. The end of the pillow 21 / back pillow 31 near the fixed shaft 26 / 36 (i.e. the end away from the patient) is provided with a moving rod 29 / 39. The moving rod 29 / 39 passes through the fixed shaft 26 / 36 radially. The end of the fixed shaft 26 / 36 away from the connecting shaft 25 / 35 is provided with a front-to-back distance locking bolt 20 / 30 for locking the relative position of the moving rod 29 / 39 and the fixed shaft 26 / 36.

[0055] In practice, the movable rod 29 / 39 passes through the through hole B on the fixed shaft 26 / 36 and can move back and forth. Once it is moved to the appropriate position, the front and rear distance locking bolt 20 / 30 is screwed into the bolt hole C on the fixed shaft 26 / 36 to fix the position of the movable rod 29 / 39.

[0056] like Figure 10 As shown, the ends of the front and rear distance locking bolts 20 / 30 can be frustoconical to facilitate locking the moving rods 29 / 39. The moving rods 29 / 39 can be provided with knurled texture to increase the fixing friction during fixation and prevent the cushion 21 / backrest 31 from moving back and forth.

[0057] like Figure 11 As shown, the end of the pillow 21 closest to the patient can be concave spherical, allowing for full contact with the pubic symphysis or anterior superior iliac spine to ensure secure fixation. The pillow 21 can be made of PU leather, which increases comfort. In practice, the head end of the pillow 21 can be round.

[0058] like Figure 12 As shown, the end of the back pillow 31 closest to the patient is concave, allowing for full contact with the patient's back and ensuring secure fixation. The back pillow 31 can be made of PU leather, which increases comfort and avoids unnecessary pressure and discomfort to the patient during position adjustments.

[0059] In this way, before hip replacement surgery, the patient is placed in a lateral decubitus position. First, slide the fixation clip 22 to the patient's anterior superior iliac spine or pubic symphysis. Then, adjust the support rod 24 to an appropriate height and lock the position of the support rod 24 and the fixation clip 22 with the locking bolt 23. Next, adjust the moving rod 29 / 39 to a suitable position and lock it with the front-to-back distance locking bolt 20 / 30. Then, rotate the moving rod 29 / 39 to drive the fixed shaft 26 / 36 to rotate to adjust the longitudinal angle. After adjusting to a suitable angle, tighten the longitudinal angle locking bolt 27 / 37. At this time, the bevel gear structure of the fixed shaft 26 / 36 and the connecting shaft 25 / 35 is locked. Finally, rotate the moving rod 29 / 39 to drive the connecting shaft 25 / 35 to rotate to adjust the lateral angle. After adjusting to a suitable angle, tighten the lateral angle locking bolt 28 / 38. The spatial direction and tilt angle of the cushion 21 / back pillow 31 are fixed.

[0060] In summary, this utility model includes two support frames (front support 2 and rear support 3), which are connected to the side rails of the operating table. The support frames are adjustable in height and angle. The height adjustment of the support frames is marked with dimensional scale lines, allowing for height adjustment according to dimensions. The front support frame (front support 2) features a circular PU leather cushion to support the pubic symphysis or anterior superior iliac spine, while the rear support frame features an arc-shaped PU leather back pillow to support the patient's back. The two supports together stabilize the patient in a lateral decubitus position, ensuring the patient's position remains fixed during surgery.

[0061] On the other hand, this utility model provides a hip replacement surgery positioning support system, such as Figure 13 As shown, the procedure includes an operating table 1, with the aforementioned hip replacement surgery positioning support device mounted on both side rails 11 of the operating table 1. The structure of the hip replacement surgery positioning support device is the same as described above, and will not be repeated here.

[0062] This utility model discloses a hip replacement surgery positioning support system, comprising an operating table 1 and a hip replacement surgery positioning support device slidably connected to the two side rails 11 of the operating table 1. The hip replacement surgery positioning support device includes a front support and a rear support arranged opposite to each other. The front support and the rear support are respectively used to connect to the two side rails of the operating table for easy use. The front support is provided with a cushion for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support is provided with a back pillow for abutting against the patient's back, which can accommodate patients of different weights and has a good fixation effect. Both the front support and the rear support include an adjustment mechanism that can adjust the spatial position and tilt angle of the cushion / back pillow. The patient only needs to lie on their side on the operating table, and the spatial position and tilt angle of the cushion / back pillow can be adjusted by adjusting the adjustment mechanism to adapt to the patient. Thus, the surgical position can be adjusted without moving the patient. The manual adjustment of the surgical position is convenient, quick and efficient. At the same time, the method of clamping and fixing the patient with the front support and the rear support ensures the stability and accuracy of the position during and after the adjustment.

[0063] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A positional support device for hip replacement surgery, characterized in that, It includes a front support and a rear support that are arranged opposite to each other and are respectively used to connect to the side rails of the operating table. The front support is provided with a cushion for abutting against the patient's pubic symphysis or anterior superior iliac spine, and the rear support is provided with a back pillow for abutting against the patient's back. Both the front support and the rear support include an adjustment mechanism that can adjust the spatial position and tilt angle of the cushion / back pillow.

2. The hip replacement surgery positioning support device according to claim 1, characterized in that, The adjustment mechanism includes a horizontal position adjustment component, which includes a fixing clamp slidably connected to the side rail of the operating table. The fixing clamp is provided with a locking bolt for locking the relative position of the fixing clamp and the operating table.

3. The hip replacement surgery positioning support device according to claim 2, characterized in that, The adjustment mechanism also includes a height adjustment component. The fixing clamp is provided with a vertical insertion hole. The height adjustment component includes a support rod. The support rod includes a sliding plate portion that passes through the vertical insertion hole. The end of the locking bolt abuts against one side of the sliding plate portion, so that the other side of the sliding plate portion abuts against the side rail of the operating table, thereby locking the relative positions of the support rod, the fixing clamp, and the operating table.

4. The hip replacement surgery positioning support device according to claim 3, characterized in that, The sliding plate is equipped with size markings; And / or, the fixing clip is C-type; And / or, the vertical insertion hole is a square hole.

5. The hip replacement surgery positioning support device according to claim 3, characterized in that, The adjustment mechanism further includes an angle adjustment assembly, which includes a connecting shaft. The connecting shaft includes a vertical rod portion connected to the upper end of the support rod and a horizontal rod portion located at the upper end of the vertical rod portion. The angle adjustment assembly also includes a fixed shaft disposed opposite to the horizontal rod portion and used for mounting the cushion / backrest. The end faces of the horizontal rod portion and the fixed shaft opposite to each other are provided with mutually cooperating bevel tooth structures. The end of the horizontal rod portion away from the fixed shaft is provided with a longitudinal angle locking bolt that passes through the horizontal rod portion and the fixed shaft to axially tighten and lock the two together.

6. The hip replacement surgery positioning support device according to claim 5, characterized in that, The support rod also includes a plug-in portion located at the upper end of the slide plate portion, the vertical rod portion is sleeved on the plug-in portion, and the vertical rod portion is provided with a lateral angle locking bolt for locking the relative position of the connecting shaft and the support rod.

7. The hip replacement surgery positioning support device according to claim 5, characterized in that, The adjustment mechanism also includes a front-to-back distance adjustment component. Each of the cushions / backrests has a movable rod at one end near the fixed shaft. The movable rod passes through the fixed shaft radially. The fixed shaft has a front-to-back distance locking bolt at one end away from the connecting shaft for locking the relative position of the movable rod and the fixed shaft.

8. The hip replacement surgery positioning support device according to claim 7, characterized in that, The movable rod is provided with knurled texture; And / or, the longitudinal angle locking bolt is provided with a retaining ring; And / or, the ends of the front and rear distance locking bolts are frustoconical.

9. The hip replacement surgery positioning support device according to claim 1, characterized in that, The end of the pillow closest to the patient is a concave spherical shape; And / or, the cushion is made of PU leather; And / or, the end face of the back pillow near the patient is concave arc-shaped; And / or, the backrest is made of PU leather.

10. A positional support system for hip replacement surgery, characterized in that, The device includes an operating table, on which the side rails of the operating table are provided with a hip replacement surgery positioning support device as described in any one of claims 1-9.

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