Pelvic cavity lifting and fixing device

Abstract

The utility model discloses a pelvic cavity lifting and fixing device, and relates to the technical field of medical instruments. The pelvic cavity lifting and fixing device comprises a bottom plate and a first supporting plate, the first supporting plate is arranged in the length direction of the bottom plate, the first supporting plate is provided with two edges in the length direction, one edge of the first supporting plate in the length direction intersects with the bottom plate to form an acute angle, and the other edge of the first supporting plate in the length direction intersects with the bottom plate. The height difference between the other side of the first supporting plate in the length direction and the bottom plate can be adjusted so as to adjust and fix the position of the pelvic cavity. The height of the other side of the first supporting plate and the height of the bottom plate can be adjusted so as to adjust and fix the position of the pelvic cavity, and adjustment of different lifting heights of the pelvic cavity can be achieved conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a pelvic lifting and fixing device. Background Art

[0002] Existing positioning devices, which mostly require patients to lie flat or lift their upper body, are unable to elevate the patient's pelvis and are therefore unsuitable for prostate radiotherapy. During radiotherapy, a pelvic lift can move other organs within the abdominal and pelvic cavities away from the irradiated area, reducing the risk of complications from radiotherapy.

[0003] However, due to the limitations of the lifting structure of the existing radiotherapy frame, it is impossible to switch between different lifting angles of the pelvis.

[0004] For example, the patent publication number CN211188835U discloses a body position fixation frame for radiotherapy. The patent only discloses a detachable hip limiter, but cannot achieve the adjustment and switching of the pelvic lifting condition. Utility Model Content

[0005] The purpose of the present invention is to provide a pelvic lifting and fixing device thereof to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a pelvic lifting and fixing device, characterized in that it includes a base plate and a first support plate, the first support plate is arranged along the length direction of the base plate, the first support plate is provided with two sides along the length direction, one side of the first support plate in the length direction intersects with the base plate to form an acute angle, and the height difference between the other side of the first support plate in the length direction and the base plate can be adjusted to adjust and fix the position of the pelvis.

[0007] The height of the other side of the first support plate and the bottom plate of the utility model can be adjusted to adjust and fix the position of the pelvic cavity, thereby facilitating the adjustment of different lifting heights of the pelvic cavity.

[0008] Further preferably, pads (110) for supporting the first support plate are provided on both the left and right sides of the base plate (100), and the inclination angle of the upper surface of the pads (110) to the horizontal plane is 5-10°. A fixing member (320) is arranged on the upper surface of the first support plate (300), and extension plates (330) are fixed on the left and right sides of the first support plate, and the fixing member (320) is located on the inner side of the extension plate (330).

[0009] The first support plate is placed on the pad, creating a specific lifting angle. A covering film is fixed to the first support plate to stabilize the chest and abdomen, ensuring consistent patient positioning during multiple treatments. The extension plate serves as a gripping armrest and position limiter. Limiting slots secure the patient's lower limbs.

[0010] Further preferably, the bottom plate is provided with a positioning and fixing structure, which includes a strip-shaped limiting groove opened on the lower side of the bottom plate and a circular hole and a waist-shaped hole passing through the bottom plate;

[0011] The circular hole and the waist-shaped hole are located at the bottom of the strip-shaped limiting groove.

[0012] The positioning and fixing structure facilitates the positioning and installation of the bottom plate on the CT bed. The bottom plate and the CT bed are connected by bolts passing through the round hole and the waist-shaped hole.

[0013] As a preferred solution, it further includes a lifting adjustment structure, which is a lifting mechanism for lifting the first support plate;

[0014] The front end of the first support plate is hinged or slidably connected to the bottom plate.

[0015] The height difference between the other side of the first support plate in the length direction and the bottom plate can be adjusted by the lifting mechanism. The front end of the first support plate is hinged or slidably connected to the bottom plate, which facilitates linkage adjustment with the lifting adjustment structure.

[0016] This type of lifting mechanism can achieve a raised pelvis and a low head and feet configuration. In addition, this type of lifting mechanism can enter a CT machine without interfering with the examination.

[0017] Further preferably, the lifting mechanism includes a lifting rod, a slider, a guide rail, and a driving assembly for driving the slider to move forward and backward;

[0018] The guide rail is installed on the bottom plate, and the guiding direction of the guide rail is the front-back direction;

[0019] The slider is slidably connected to the guide rail, the slider is hinged to the lower end of the lifting rod, and the upper end of the lifting rod is hinged to a hinge seat installed at one end of the first support plate adjacent to the second support plate.

[0020] The forward and backward movement of the slider drives the adjustment of the swing angle of the first support plate, thereby realizing the adjustment of the angle between the first support plate and the second support plate.

[0021] Further preferably, the driving assembly includes a driving motor and a transmission screw, the power output end of the driving motor is transmission-connected to the transmission screw, and the transmission screw is threadedly connected to the slider;

[0022] The second support plate is provided with an avoidance hole for avoiding the transmission screw;

[0023] The driving motor is mounted on the rear side of the base plate.

[0024] The purpose of the rear side is to prevent the drive motor from entering the CT area and affecting the radiation, so the drive and transmission should be placed outside the CT area as much as possible.

[0025] As another preferred solution, the lifting and adjusting structure is a lifting mechanism for lifting the hinge between the first support plate and the second support plate;

[0026] The front end of the first support plate is slidably connected to the bottom plate, and the rear end of the second support plate is slidably connected to the bottom plate.

[0027] The height difference between the other side of the first support plate in the length direction and the bottom plate can be adjusted by the lifting mechanism. The front end of the first support plate is slidably connected to the bottom plate, and the rear end of the second support plate is slidably connected to the bottom plate, so as to facilitate linkage adjustment with the lifting mechanism.

[0028] More preferably, it further comprises a lifting adjustment structure, wherein the lifting adjustment structure is a lifting mechanism for lifting the first support plate;

[0029] The lifting mechanism includes a scissor-type lifting assembly and a driving assembly for driving the scissor-type lifting assembly to rise and fall;

[0030] The scissor-type lifting assembly includes two scissor arm units arranged side by side in front and back, the scissor arm unit includes two scissor arms hinged to each other, the tops of the scissor arms are hinged with a support sliding block, the support sliding block is slidably connected to a support upper rail, and the length direction of the support upper rail is the left-right direction;

[0031] A rotating sleeve is provided on the top of the supporting upper rail;

[0032] A first sleeve is fixed to the other side of the first support plate;

[0033] The first sleeve and the rotating sleeve are rotatably connected through the same shaft, and the scissor-type lifting assembly drives the shaft to rise and fall vertically.

[0034] It is convenient to adjust the height difference between the other side in the length direction of the first support plate and the bottom plate in the vertical direction through the lifting mechanism.

[0035] Further preferably, the scissor-type lifting assembly further comprises support units arranged front and back, each support unit comprises two support arms, and a sliding slot is provided on the support arm;

[0036] The bottoms of the two support units are respectively hinged to the front and rear ends of the transmission box fixed to the base plate, and the tops of the support arms of the two support units are respectively hinged to the bottoms of the scissor arms of the two scissor arm units;

[0037] The driving assembly includes a driving motor, a transmission shaft, a driving bevel gear, a driven bevel gear, a transmission rod, a driving transmission pin and a passive transmission pin;

[0038] The power output shaft of the driving motor is connected to the transmission shaft, and the driving bevel gear is installed at the front end of the transmission shaft;

[0039] One support arm of the two support units is slidably connected to the active transmission pin passing through the sliding slot, and the other support arm of the two support units is slidably connected to the passive transmission pin passing through the sliding slot;

[0040] One end of the transmission rod is provided with an external thread, and the active transmission pin is provided with an internal thread threadedly connected to the transmission rod;

[0041] The other end of the transmission rod is slidably connected to the passive transmission pin;

[0042] A driven bevel gear meshing with the driving bevel gear is installed on the transmission rod.

[0043] The scissor lift assembly can be easily moved up and down by a drive motor. In addition, the drive assembly can be placed into a CT machine without interfering with the examination.

[0044] Further preferably, the drive motor is installed on the rear side of the base plate.

[0045] The purpose of the rear side is to prevent the drive motor from entering the CT area and affecting the radiation, so the drive and transmission should be placed outside the CT area as much as possible.

[0046] As another preferred solution, it further includes a second support plate, wherein the front end of the first support plate is hinged to the bottom plate, and the rear end of the second support plate is clamped to the bottom plate;

[0047] It also includes a lifting adjustment structure, which adjusts the height of the hinge between the first support plate and the second support plate by adjusting the clamping position of the second support plate and the bottom plate;

[0048] The adjustment mechanism includes an adjustment slot fixed on the base plate, and the adjustment slot is arranged from front to back.

[0049] This lifting and adjusting structure can achieve a pelvic elevation with low head and feet. In addition, this lifting and adjusting structure can enter a CT machine without interfering with imaging.

[0050] Further preferably, it further includes a second support plate, the second support plate is hinged to the first support plate, the second support plate is provided with a second sleeve, and the second support plate is provided with a limiting groove.

[0051] The second support plate is convenient for supporting the lower limbs. The limiting groove is used to embed the lower limbs and feet.

[0052] Further preferably, the first support plate, the second support plate, the bottom plate and the lifting and adjusting structure except the driving motor are made of carbon fiber or plastic to avoid the use of metal and product artifacts.

[0053] Compared with the prior art, the beneficial effects of the present invention are:

[0054] 1) The utility model facilitates the adjustment of different pelvic elevation heights. The utility model can achieve a pelvic elevation with the head and feet lowered.

[0055] 2) The utility model optimizes the structure of the pelvic cavity elevation, ensuring access to the CT machine without interfering with the examination.

[0056] 3) The drive motor is installed on the rear side of the base plate. The purpose is to prevent the drive motor from entering the CT tube area and affecting the imaging quality. Therefore, the drive and transmission mechanisms should be placed outside the CT tube imaging area. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a structural diagram of a specific embodiment 1 of the present utility model;

[0058] Figure 2 This is a schematic structural diagram of the bottom plate of the specific embodiment 1 of the present utility model;

[0059] Figure 3 This is a structural diagram of the first support plate of the specific embodiment 1 of the present utility model;

[0060] Figure 4 This is a structural diagram of the second support plate of the specific embodiment 1 of the present utility model;

[0061] Figure 5 This is a structural diagram of the lifting and lowering adjustment structure of the specific embodiment 1 of the present utility model;

[0062] Figure 6 This is a schematic diagram of the partial structure of the lifting adjustment structure of the specific embodiment 1 of the present utility model in a low position state;

[0063] Figure 7 This is a partial structural diagram of the lifting adjustment structure of the specific embodiment 1 of the present utility model in a high position state;

[0064] Figure 8 This is a structural diagram of a specific embodiment 2 of the present utility model;

[0065] Figure 9 This is a structural diagram of the bottom plate of specific embodiment 2 of the present utility model;

[0066] Figure 10 This is a structural diagram of a specific embodiment 2 of the present invention in a state where the second support plate is hidden;

[0067] Figure 11 This is a schematic diagram of the partial structure of the specific embodiment 2 of the utility model in a state where the first support plate is hidden;

[0068] Figure 12 This is a structural diagram of the lifting and lowering adjustment structure of the specific embodiment 2 of the present utility model;

[0069] Figure 13 This is a partial structural diagram of the lifting adjustment structure of the specific embodiment 2 of the present utility model in a low position state;

[0070] Figure 14 This is a schematic diagram of the partial structure of the lifting adjustment structure of the specific embodiment 2 of the present utility model in a high position state;

[0071] Figure 15 This is another structural schematic diagram of the specific embodiment 2 of the utility model in a state where the second support plate is hidden;

[0072] Figure 16 This is a structural diagram of a specific embodiment 3 of the present utility model;

[0073] Figure 17 This is a structural diagram of the second support plate of specific embodiment 3 of the present utility model.

[0074] In the figure: 100 is the bottom plate, 200 is the pillow, 300 is the first support plate, 400 is the second support plate, 800 is the lifting adjustment structure, 110 is the cushion block, 111 is the support seat, 120 is the guide rail, 130 is the strip limit groove, 140 is the waist-shaped hole, 150 is the second support plate sliding groove, 160 is the first support plate sliding groove, 170 is the round hole, 180 is the adjustment slot, 190 is the transmission box, 320 is the fixing part, 330 is the extension plate, 340 is the first sleeve, 410 is the card plate part, 420 is the avoidance hole, 430 is the It is the second sliding pin sleeve, 440 is the second sleeve, 450 is the limiting groove, 810 is the slider, 811 is the lifting rod, 812 is the hinge seat, 813 is the transmission screw, 814 is the driving motor, 820 is the support arm, 821 is the sliding groove, 822 is the active transmission pin, 823 is the passive transmission pin, 830 is the scissors arm, 840 is the supporting sliding block, 850 is the shaft, 860 is the driven bevel gear, 870 is the active bevel gear, 880 is the transmission shaft, 890 is the transmission rod, 900 is the support upper rail, and 910 is the rotating sleeve. DETAILED DESCRIPTION

[0075] See also Figures 1 to 17The pelvic lifting and fixing device includes a base plate 100 and a first support plate 300. The first support plate 300 is arranged along the length of the base plate 100 and has two sides along the length. One side of the first support plate 300 intersects with the base plate 100 to form an acute angle. The height difference between the other side of the first support plate 300 and the base plate 100 is adjustable to adjust and fix the pelvic position. The height of the other side of the first support plate and the base plate of the utility model is adjustable to adjust and fix the pelvic position, facilitating the adjustment of different pelvic lifting heights.

[0076] Pads 110 for supporting the first support plate are provided on the left and right sides of the base plate 100. The inclination angle of the upper surface of the pad 110 to the horizontal plane is 5-10°. A fixing member 320 is arranged on the upper surface of the first support plate 300. Extension plates 330 are fixed on the left and right sides of the first support plate. The fixing member 320 is located on the inner side of the extension plate 330.

[0077] The first support plate is placed on the pad, creating a specific lifting angle. A covering film is fixed to the first support plate to stabilize the chest and abdomen, ensuring consistent patient positioning during multiple treatments. The extension plate serves as a gripping armrest and position limiter. Limiting slots secure the patient's lower limbs.

[0078] See also Figures 1 to 7 Specific embodiment 1, a pelvic lift and fixation device, includes a base plate 100, on which a pillow support 200 is mounted, and the base plate 100 is provided with a positioning and fixing structure for fixation; it also includes a first support plate 300 for supporting the patient's chest and abdomen and a second support plate 400 for supporting the patient's lower limbs, the first support plate 300 and the second support plate 400 being hingedly connected by a rotating shaft; fixing members 320 for fixing the covering film are symmetrically arranged on the upper surface of the first support plate 300, and extension plates 330 are fixed to the left and right sides of the first support plate 300, and the fixing members are located on the inner side of the extension plates 330. The fixing members can be bumps. Because the covering film is a thermoplastic film, it can be shaped according to the shape of the surrounding objects after vacuuming. The second support plate 400 is provided with a limiting groove 450 for the legs to be inserted into; it also includes a lifting and lowering adjustment structure 800 for adjusting the height of the hinge between the first support plate 300 and the second support plate 400.

[0079] This utility model facilitates adjustment of the pelvic elevation by adjusting the angle between the first support plate 300 and the second support plate 400. A fixed covering film on the first support plate 300 stabilizes the chest and abdomen, ensuring consistent patient positioning during multiple treatments. The extension plate 330 serves as a gripping armrest and position limiter. Limiting grooves secure the patient's lower limbs.

[0080] Pads 110 are fixed on both sides of the bottom plate 100 for supporting the first support plate 300. The upper surface of the pads 110 has an inclination angle of 5-10 degrees. The first support plate 300 is placed on the pads to form a specific lifting angle.

[0081] The positioning and fixing structure includes a strip-shaped limiting groove 130 opened on the lower side of the bottom plate 100 and a round hole 170 and a waist-shaped hole 140 passing through the bottom plate 100 ; the round hole 170 and the waist-shaped hole 140 are located at the bottom of the strip-shaped limiting groove 130 .

[0082] The lifting and adjusting structure 800 is a lifting mechanism for jacking up the first support plate 300. The front end of the first support plate 300 is hinged to the base plate 100, and the rear end of the second support plate 400 is slidably connected to the base plate 100. First support plate sliding grooves 150 are provided on the left and right sides of the base plate 100. A second sliding pin sleeve 430 is fixed to the rear end of the second support plate 400 and slidably connected to the first support plate sliding groove 150 via an inserted pin. The front end of the second support plate sliding groove 150 is open.

[0083] The lifting mechanism includes a lifting rod 811, a slider 810, a guide rail 120, and a drive assembly that drives the slider back and forth. The guide rail 120 is mounted on the base plate 100 and guides the guide rail 120 in a forward-backward direction. The slider is slidably connected to the guide rail, and the slider is hinged to the lower end of the lifting rod 811. The upper end of the lifting rod 811 is hinged to a hinge seat 812 mounted on the end of the first support plate 300 adjacent to the second support plate 400. This facilitates adjustment of the swing angle of the first support plate 300 and the angle between the first support plate 300 and the second support plate 400 through the back and forth movement of the slider. A hinge seat 812 is detachably connected to the bottom of the first support plate, and the hinge seat 812 is hinged to the lifting rod 811.

[0084] The drive assembly includes a drive motor 814 and a transmission screw 813. The power output end of the drive motor 814 is connected to the transmission screw 813, which is threadedly connected to the slider. The second support plate 400 is provided with an escape hole 420 for accommodating the transmission screw 813. The drive motor 814 is mounted on the base plate 100. Alternatively, the drive motor 814 is mounted on a motor mount that is removably mounted on the rear side of the base plate 100.

[0085] See also Figures 8 to 15Specific embodiment 2, a pelvic lifting and fixation device, includes a base plate 100, on which a pillow support 200 is mounted, and the base plate 100 is provided with a positioning and fixing structure for fixation; a first support plate 300 for supporting the patient's chest and abdomen, and a second support plate 400 for supporting the patient's lower limbs. The first support plate 300 and the second support plate 400 are hingedly connected by a rotating shaft; the first support plate 300 and the second support plate 400 are arranged in front of each other. The first support plate 300 and the second support plate 400 are arranged in front of each other. The side of the first support plate 300 adjacent to the pillow support 200 is the front side of the first support plate 300. The side of the first support plate 300 adjacent to the second support plate 400 is the rear side of the first support plate 300. The side of the second support plate 400 adjacent to the first support plate 300 is the front side of the second support plate 400. The side of the second support plate 400 away from the first support plate 300 is the rear side of the second support plate 400.

[0086] The upper surface of the first support plate 300 is symmetrically arranged with fixings for fixing the covering film. Extension plates 330 are fixed to the left and right sides of the first support plate 300, and the fixings are located on the inner side of the extension plates 330. The fixings can be bumps. Because the covering film is a thermoplastic film, it can be shaped according to the shape of the surrounding objects after vacuuming. The second support plate 400 is provided with a limiting groove for the legs to be inserted; it also includes a lifting and adjusting structure 800 for adjusting the angle between the first support plate 300 and the second support plate 400 and raising the height of the hinge between the first support plate 300 and the second support plate 400. The first support plate 300, the second support plate 400, and the base plate 100 are connected in sequence to form a triangular closed structure. The lifting and adjusting structure 800 is used to adjust the connection position of at least one of the first support plate 300 and the second support plate 400 with the base plate.

[0087] Pads are fixed on both sides of the bottom plate 100 to support the first support plate 300. The upper surfaces of the pads have an inclination angle of 5-10 degrees. The first support plate 300 is placed on the pads to form a specific lifting angle.

[0088] The positioning and fixing structure includes a strip-shaped limiting groove opened on the lower side of the bottom plate 100 and a round hole and a waist-shaped hole penetrating the bottom plate 100 ; the round hole and the waist-shaped hole are located at the bottom of the strip-shaped limiting groove.

[0089] The lifting and adjusting structure 800 is a lifting mechanism used to lift the hinged joint between the first support plate 300 and the second support plate 400. The front end of the first support plate 300 is slidably connected to the base plate 100, and the rear end of the second support plate 400 is slidably connected to the base plate 100. The left and right sides of the base plate 100 are provided with a first support plate sliding groove 160 and a second support plate sliding groove 150, arranged front and rear. A first sliding pin sleeve is fixed to the front end of the first support plate 300 and is slidably connected to the first support plate sliding groove 160 via an insert pin. A second sliding pin sleeve is fixed to the rear end of the second support plate 400 and is slidably connected to the second support plate sliding groove 150 via an insert pin. The rear end of the first support plate sliding groove 160 is open. The front end of the second support plate sliding groove 150 is open.

[0090] The lifting mechanism includes a scissor-type lifting assembly and a drive assembly that drives the scissor-type lifting assembly up and down. The scissor-type lifting assembly includes two scissor arm units arranged side by side in front and back. The scissor arm units include two mutually hinged scissor arms 830. The tops of the scissor arms 830 are hinged with support slides 840. The support slides 840 are slidably connected to an upper support rail 900, the length of which is oriented left and right. A rotating sleeve 910 is provided at the top of the upper support rail 900. A first sleeve 340 and a second sleeve 440 are respectively fixed to the adjacent sides of the first support plate 300 and the second support plate 400. The first sleeve 340, the second sleeve 440, and the rotating sleeve are rotatably connected through a common shaft 850. The scissor-type lifting assembly drives the shaft 850 to vertically rise and fall.

[0091] The scissor lift assembly also includes support units arranged front and back, each support unit includes two support arms 820, and a sliding groove 821 is provided on the support arm 820; the bottoms of the two support units are respectively hinged to the front and rear ends of the transmission box 190 fixed to the base plate 100, and the tops of the scissor arms 830 of the two support units are respectively hinged to the bottoms of the support arms 820 of the two scissor arm units; the drive assembly includes a drive motor, a transmission shaft 880, an active bevel gear 870, a driven bevel gear 860, a transmission rod 890, an active transmission pin 822 and a passive transmission pin 823; the power output shaft of the drive motor The transmission is connected to the transmission shaft 880, the front end of which is mounted with a driving bevel gear 870. One support arm 820 of the two support units is slidably connected to the driving transmission pin 822 passing through the sliding slot, while the other support arm 820 of the two support units is slidably connected to the passive transmission pin 823 passing through the sliding slot. One end of the transmission rod 890 is provided with an external thread, and the active transmission pin 822 is provided with an internal thread that is threadedly connected to the transmission rod 890. The other end of the transmission rod 890 is slidably connected to the passive transmission pin 823. The transmission rod 890 is mounted with a driven bevel gear 860 that meshes with the driving bevel gear 870. This facilitates the raising and lowering of the scissor lift assembly by the drive motor. Figure 16 , support bases 111 for supporting both sides of the transmission rod 890 can be installed on the opposite sides of the bottom plate 100. The transmission rod 890 is connected to the support base 111 through a bearing.

[0092] See also Figure 16 as well as Figure 17 Specific embodiment 3, a pelvic lift and fixation device, is characterized by comprising a base plate 100, on which a pillow support 200 is mounted, and the base plate 100 is provided with a positioning and fixing structure for fixation; a first support plate 300 for supporting the patient's chest and abdomen, and a second support plate 400 for supporting the patient's lower limbs, the first support plate 300 and the second support plate 400 being hingedly connected via a rotating shaft. The first support plate 300 and the second support plate 400 are arranged in a front-to-back relationship. The first support plate 300 and the second support plate 400 are arranged in a front-to-back relationship. The side of the first support plate 300 adjacent to the pillow support 200 is the front side of the first support plate 300. The side of the first support plate 300 adjacent to the second support plate 400 is the rear side of the first support plate 300. The side of the second support plate 400 adjacent to the first support plate 300 is the front side of the second support plate 400. The side of the second support plate 400 away from the first support plate 300 is the rear side of the second support plate 400.

[0093] The upper surface of the first support plate 300 is symmetrically arranged with fixings for fixing the covering film. Extension plates 330 are fixed to the left and right sides of the first support plate 300, and the fixings are located on the inner side of the extension plates 330. The fixings can be bumps. Because the covering film is a thermoplastic film, it can be shaped according to the shape of the surrounding objects after vacuuming. The second support plate 400 is provided with a limiting groove for the legs to be inserted; it also includes a lifting and adjusting structure 800 for adjusting the angle between the first support plate 300 and the second support plate 400 and raising the height of the hinge between the first support plate 300 and the second support plate 400. The first support plate 300, the second support plate 400, and the base plate 100 are connected in sequence to form a triangular closed structure. The lifting and adjusting structure 800 is used to adjust the connection position of at least one of the first support plate 300 and the second support plate 400 with the base plate.

[0094] The front end of the first support plate 300 is hinged to the base plate 100, and the rear end of the second support plate 400 is clipped to the base plate 100. The lift adjustment structure 800 adjusts the height of the hinged joint between the first support plate 300 and the second support plate 400 by adjusting the clipping position between the second support plate 400 and the base plate 100. The lift adjustment structure 800 includes at least three adjustment slots 180 fixed to the base plate 100, arranged from front to back. The second support plate 400 is provided with a clip portion 410 at one end away from the first support plate for clipping into the adjustment slot 180.

[0095] Pads are fixed on both sides of the bottom plate 100 to support the first support plate 300. The upper surfaces of the pads have an inclination angle of 5-10 degrees. The first support plate 300 is placed on the pads to form a specific lifting angle.

[0096] The positioning and fixing structure includes a strip-shaped limiting groove opened on the lower side of the bottom plate 100 and a round hole and a waist-shaped hole penetrating the bottom plate 100 ; the round hole and the waist-shaped hole are located at the bottom of the strip-shaped limiting groove.

[0097] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pelvic lifting and fixing device, characterized in that: The invention comprises a base plate (100) and a first support plate (300), wherein the first support plate (300) is arranged along the length direction of the base plate (100), and the first support plate (300) is provided with two sides along the length direction, one side of the first support plate (300) in the length direction intersects with the base plate (100) to form an acute angle, and the height difference between the other side of the first support plate (300) in the length direction and the base plate (100) can be adjusted to adjust and fix the position of the pelvic cavity.

2. The pelvic lifting and fixing device according to claim 1, characterized in that: Pads (110) for supporting the first support plate are provided on both the left and right sides of the bottom plate (100), and the inclination angle between the upper surface of the pads (110) and the horizontal plane is 5 to 10 degrees. A fixing member (320) is arranged on the upper surface of the first support plate (300), and extension plates (330) are fixed on the left and right sides of the first support plate, and the fixing member (320) is located on the inner side of the extension plate (330).

3. The pelvic lifting and fixing device according to claim 1, characterized in that: The bottom plate (100) is provided with a positioning and fixing structure, which includes a strip-shaped limiting groove (130) provided on the lower side of the bottom plate (100), a circular hole (170) and a waist-shaped hole (140) passing through the bottom plate (100); The circular hole and the waist-shaped hole are located at the bottom of the strip-shaped limiting groove.

4. The pelvic lifting and fixing device according to any one of claims 1 to 3, characterized in that: It also includes a lifting adjustment structure (800), which is a lifting mechanism for lifting the first support plate (300); the front end of the first support plate (300) is hinged or slidably connected to the bottom plate (100).

5. The pelvic lifting and fixing device according to claim 4, characterized in that: The lifting mechanism includes a lifting rod (811), a slider (810), a guide rail (120), and a driving assembly for driving the slider (810) to move forward and backward; The guide rail (120) is installed on the bottom plate (100), and the guiding direction of the guide rail (120) is the front-back direction; The slider (810) is slidably connected to the guide rail (120), the slider (810) is hinged to the lower end of the lifting rod (811), and the upper end of the lifting rod (811) is rotatably connected to the first support plate (300).

6. The pelvic lifting and fixing device according to claim 5, characterized in that: The driving assembly includes a driving motor (814) and a transmission screw (813), wherein the power output end of the driving motor (814) is connected to the transmission screw (813), and the transmission screw (813) is threadedly connected to the slider (810); The driving motor (814) is installed on the rear side of the base plate (100).

7. The pelvic lifting and fixing device according to claim 1, characterized in that: It also includes a lifting and adjusting structure (800), which is a lifting mechanism for lifting the first supporting plate (300); The lifting mechanism includes a scissor-type lifting assembly and a driving assembly for driving the scissor-type lifting assembly to rise and fall; The scissor-type lifting assembly comprises two scissor arm units arranged side by side in front and back, the scissor arm units comprising two mutually hinged scissor arms (830), the tops of the scissor arms (830) are hinged with support sliding blocks (840), the support sliding blocks (840) are slidably connected to the support upper rail (900), and the length direction of the support upper rail (900) is the left-right direction; A rotating sleeve (910) is provided on the top of the supporting upper rail (900); A first sleeve (340) is fixed to the other side of the first support plate (300); The first sleeve (340) and the rotating sleeve (910) are rotatably connected via a common shaft (850), and the scissor-type lifting assembly drives the shaft (850) to vertically lift and lower.

8. The pelvic lifting and fixing device according to claim 7, characterized in that: The scissor-type lifting assembly further comprises support units arranged front and back, each of the support units comprising two support arms (820), and a sliding slot (821) is provided on the support arm (820); The bottoms of the two support units are respectively hinged to the front and rear ends of a transmission box (190) fixed to the base plate (100), and the tops of the support arms (820) of the two support units are respectively hinged to the bottoms of the scissor arms (830) of the two scissor arm units; The driving assembly includes a driving motor (814), a transmission shaft (880), an active bevel gear (870), a driven bevel gear (860), a transmission rod (890), an active transmission pin (822), and a passive transmission pin (823); The power output shaft of the driving motor is connected to the transmission shaft (880), and the front end of the transmission shaft (880) is equipped with the driving bevel gear (870); One support arm (820) of the two support units is slidably connected to the active transmission pin (822) passing through the sliding slot (821), and the other support arm (820) of the two support units is slidably connected to the passive transmission pin (823) passing through the sliding slot (821); One end of the transmission rod (890) is provided with an external thread, and the active transmission pin (822) is provided with an internal thread threadedly connected to the transmission rod; The other end of the transmission rod (890) is slidably connected to the passive transmission pin (823); A driven bevel gear (860) meshing with the driving bevel gear (870) is mounted on the transmission rod (890).

9. The pelvic lifting and fixing device according to claim 1, characterized in that: The invention also includes a second support plate (400), wherein the front end of the first support plate (300) is hinged to the bottom plate (100), and the rear end of the second support plate (400) is snap-connected to the bottom plate (100). The invention also includes a lifting adjustment structure (800), wherein the lifting adjustment structure (800) includes an adjustment slot (180) fixed on the bottom plate (100), and the adjustment slot (180) is arranged from front to back along the length direction of the bottom plate (100).

10. The pelvic lifting and fixing device according to claim 1, characterized in that: It also includes a second support plate (400), wherein the second support plate is provided with a second sleeve (440), and the second support plate (400) is provided with a limiting groove (450).

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