Lumbar anesthesia body position chair for obese patient

Abstract

The utility model discloses a lumbar anesthesia body position chair for an obese patient, belongs to the technical field of medical instruments, and solves the problem that the lumbar anesthesia body position chair in the prior art cannot assist the obese patient in opening a spinous process gap when the seat of the obese patient is punctured. A lumbar anesthesia body position chair for obese patients comprises a seat plate, a lifting base plate, a lying cushion, a spinous process gap opening auxiliary unit and a soft cushion. The bottom face of the seat plate is provided with the spinous process gap opening auxiliary unit, the spinous process gap opening auxiliary unit is used for adjusting the position of the soft cushion fixedly connected with the spinous process gap opening auxiliary unit, the lying back cushion is fixed to one side of the seat plate, and when an obese patient sits on the seat plate, the abdomen of the obese patient makes contact with the soft cushion. According to the lumbar anesthesia body position chair for the obese patient, the position of the soft cushion can be adjusted through the back plate, the pushing execution component, the transmission component and the telescopic hand shifting component, and the position of the soft cushion is adjusted to assist the obese patient in opening a spinous process gap when the seat is punctured.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a lumbar anesthesia positioning chair for obese patients. Background Technology

[0002] Spinal anesthesia, a type of intraspinal anesthesia, involves injecting anesthetic drugs into the subarachnoid space to block the spinal nerve roots and produce anesthesia. The most common puncture sites are the intervertebral spaces between the second and third lumbar vertebrae, or between the third and fourth lumbar vertebrae. To fully expose the puncture space, the patient is usually placed in a lateral decubitus position with their knees drawn up to their sides: the patient lies on their side on the operating table with their back perpendicular to the bed surface and level with the edge of the bed, bending their lower back as far as possible to fully open the interspinous spaces. However, for particularly obese patients, the thicker back fat tissue makes it difficult to palpate the intervertebral spaces in the lateral decubitus position, significantly reducing the success rate of puncture. When puncturing in a sitting position, the back fat tissue sags due to gravity, making the intervertebral spaces easier to palpate. Therefore, a sitting puncture position is usually chosen for obese patients undergoing spinal anesthesia.

[0003] When performing puncture in a seated position, obese patients have difficulty bending over due to their large abdomen, making it difficult to fully open the interspinous space. Existing spinal anesthesia chairs cannot assist obese patients in opening the interspinous space when performing puncture while seated. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a spinal anesthesia positioning chair for obese patients, in order to solve the problem in the prior art that the spinal anesthesia positioning chair cannot assist obese patients in opening the interspinous space when undergoing puncture while seated.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] A lumbar anesthesia positioning chair for obese patients includes a seat board, a lifting base, a reclining cushion, a spinous process gap opening auxiliary unit, and a soft pad. The seat board is fixedly connected to the lifting base, and the spinous process gap opening auxiliary unit is installed on the seat board. The soft pad is fixedly installed on the spinous process gap opening auxiliary unit, which is used to adjust the position of the soft pad. The reclining cushion is fixedly installed on one side of the seat board. When an obese patient sits on the seat board, the obese patient's chest contacts the reclining cushion, and the obese patient's abdomen contacts the soft pad.

[0007] The spur gap opening auxiliary unit includes a back plate, a pushing execution component, a transmission component, and a telescopic hand lever component. The pushing execution component is located on the back plate, and the telescopic hand lever component is located at the lower part of the seat plate. The telescopic hand lever component is connected to the pushing execution component through the transmission component. When the telescopic hand lever component is extended, rotating the telescopic hand lever component allows it to control the pushing execution component to push through the transmission component. The pushing execution component pushes the soft pad through the back plate.

[0008] Furthermore, the pushing execution component includes an internally threaded cylinder, an externally threaded rod, a sliding rod, a limiting sleeve, an arc-shaped connecting rod, and a mounting bracket; the back plate is fixedly connected to the internally threaded cylinder; the mounting bracket is fixedly connected to the seat plate; the limiting sleeve and the seat plate are connected by the arc-shaped connecting rod; one end of the externally threaded rod is mounted on the mounting bracket and rotatably connected to the mounting bracket, and the other end of the externally threaded rod is inserted into the internally threaded cylinder and threadedly connected to the internally threaded cylinder; the sliding rod is installed on both sides of the back plate, and the sliding rod is slidably connected to the limiting sleeve.

[0009] Furthermore, the transmission component includes a driven spur gear, a transmission belt, a driving spur gear, a driven helical gear, a intermediate helical gear, and a driving helical gear; the driven spur gear is fixedly installed at one end of the external threaded rod, the driven spur gear and the driving spur gear are transmitted through the transmission belt, the driven helical gear is fixedly installed on the driving spur gear, the driven helical gear meshes with the intermediate helical gear, the intermediate helical gear meshes with the driving helical gear, and the driving spur gear, intermediate helical gear, and driving helical gear are all installed on the mounting bracket and are rotatably connected to the mounting bracket.

[0010] Furthermore, the telescopic lever component includes a rotating shaft, a rotating sleeve, and a lever; the rotating shaft passes through the mounting frame and is rotatably connected to the mounting frame; one end of the rotating shaft is fixedly connected to the driving helical gear, and the rotating shaft and the rotating sleeve are keyed together; the rotating sleeve can slide relative to the axial direction of the rotating shaft, and one end of the rotating sleeve is fixed to the lever.

[0011] Furthermore, the mounting bracket includes a first bracket and a second bracket, the second bracket being fixedly connected to the first bracket, and the second bracket being used to mount the external threaded rod and the driving spur gear; the first bracket is provided with a first mounting seat, a second mounting seat and a third mounting seat, and the first bracket is fixedly mounted on the base plate through the first mounting seat; the first mounting seat is used to mount the rotating shaft, the second mounting seat is used to mount the driving helical gear, and the third mounting seat is used to mount the intermediate helical gear.

[0012] Furthermore, it also includes a headrest unit, which includes a hollow headrest, a lifting rod, a fixing recess, and a pin; the fixing recess is fixedly installed on the reclining cushion; the hollow headrest fixes the lifting rod, which has multiple through holes at different heights, and the lifting rod is slidably connected to the fixing recess. The fixing recess has a round hole, and the pin passes through the round hole of the fixing recess and can be inserted into one of the through holes of the lifting rod.

[0013] Furthermore, the lifting chassis includes a base plate, a lifting platform, casters, and a foot pedal; the lifting platform is fixedly installed on the upper surface of the base plate, the seat plate is fixedly installed on the lifting platform, the casters are installed on the base plate, and the foot pedal is disposed on the side wall of the base plate.

[0014] Furthermore, a body positioning fixing component is installed on two opposite sides of the seat plate. The body positioning fixing component includes a body positioning fixing plate and a connecting plate. One side of the connecting plate is fixedly connected to the seat plate, and the other side is connected to the body positioning fixing plate.

[0015] Furthermore, the connecting plate is a telescopic plate; the body positioning plate is equipped with an infusion support.

[0016] Furthermore, a tray is fixed to the back of the reclining cushion, which provides support when an obese patient hugs the reclining cushion with their arms.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The spinal anesthesia positioning chair for obese patients provided by this utility model includes a seat board, a lifting base, a backrest cushion, a spinous process gap opening auxiliary unit, and a soft cushion; the seat board is fixedly connected to the lifting base, and the spinous process gap opening auxiliary unit is installed on the seat board; the soft cushion is fixedly installed on the spinous process gap opening auxiliary unit, and the spinous process gap opening auxiliary unit is used to adjust the position of the soft cushion; the backrest cushion is fixedly installed on one side of the seat board, and when the obese patient sits on the seat board, the obese patient's chest contacts the backrest cushion, and the obese patient's abdomen contacts the soft cushion; the spinous process gap opening auxiliary unit includes a back plate, a pushing execution component, a transmission component, and a telescopic hand lever component; the pushing execution component is disposed on the back plate, the... A telescopic lever component is located at the lower part of the seat plate. The telescopic lever component is connected to the pushing execution component through the transmission component. When the telescopic lever component is extended, rotating the telescopic lever component allows it to control the pushing execution component to push the pad through the transmission component. The pushing execution component pushes the pad through the back plate. This invention allows the position of the pad to be adjusted through the back plate, the pushing execution component, the transmission component, and the telescopic lever component. Adjusting the position of the pad helps obese patients open the interspinous space during seated puncture. Medical staff can observe the opening of the interspinous space of obese patients when rotating the telescopic lever component, so as to control the pad to reach the appropriate position to assist the interspinous space of obese patients in opening.

[0019] (2) The lumbar anesthesia positioning chair for obese patients provided by this utility model also includes a head resting unit, which includes a hollow headrest, a lifting rod, a fixing recess, and a pin; the fixing recess is fixedly installed on the backrest cushion; the hollow headrest is fixed to the lifting rod, the lifting rod has multiple through holes at different heights, and the lifting rod is slidably connected to the fixing recess, the fixing recess has a round hole, and the pin passes through the round hole of the fixing recess and can be inserted into one of the through holes of the lifting rod, thereby adjusting the height of the hollow headrest so that the heads of obese patients of different heights can be placed on the hollow headrest.

[0020] (3) The lumbar anesthesia positioning chair for obese patients provided by this utility model has a seat cushion that is farther away from the soft cushion than the seat cushion that is closer to the soft cushion, so that the obese patient is less likely to move his / her buttocks under the support of the soft cushion, thereby improving the stability of the obese patient when opening the interspinous space and during anesthesia.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] Figure 1 This is a structural schematic diagram of the spinal anesthesia positioning chair for obese patients according to this utility model.

[0024] Figure 2 This is one of the structural schematic diagrams of the spinous process gap opening auxiliary unit of the spinal anesthesia positioning chair for obese patients according to this utility model.

[0025] Figure 3 This is the second schematic diagram of the auxiliary unit for opening the interspinous space of the spinous anesthesia positioning chair for obese patients according to this utility model.

[0026] Figure 4 This is a diagram showing the positional relationship between the backrest, armrests, and headrest unit of the lumbar anesthesia positioning chair for obese patients according to this utility model.

[0027] Figure 5 This is a schematic diagram of the lifting base of the lumbar anesthesia positioning chair for obese patients according to this utility model.

[0028] Figure 6 This is a structural schematic diagram of the positioning fixation component of the lumbar anesthesia positioning chair for obese patients according to this utility model.

[0029] Figure 7 This is a schematic diagram of the mounting frame for the spinal anesthesia positioning chair for obese patients according to this utility model.

[0030] Figure label:

[0031] 1. Seat board, 2. Seat cushion, 3. Lifting chassis, 4. Reclining cushion, 5. Spiral gap opening auxiliary unit, 6. Tray, 7. Head reclining unit, 8. Soft cushion, 9. Body position fixing component;

[0032] 301. Base plate; 302. Lifting platform; 303. Casters; 304. Foot pedal;

[0033] 501. Back plate; 502. Internally threaded cylinder; 503. Externally threaded rod; 504. Driven spur gear; 505. Transmission belt; 506. Driving spur gear; 507. Driven helical gear; 508. Intermediate helical gear; 509. Driving helical gear; 510. Rotating shaft; 511. Rotating sleeve; 512. Hand lever; 513. Sliding rod; 514. Limiting sleeve; 515. Arc-shaped connecting rod; 516. Mounting bracket; 517. First bracket; 518. Second bracket; 519. First mounting seat; 520. Second mounting seat; 521. Third mounting seat;

[0034] 701. Hollow headrest; 702. Lifting rod; 703. Fixing recess; 704. Pin;

[0035] 901. Body positioning fixation plate; 902. Connecting plate. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0037] This embodiment provides a positioning chair for obese patients undergoing lumbar anesthesia, such as... Figure 1 As shown, the device includes a seat plate 1, a lifting base 3, a reclining cushion 4, a spinous process gap opening auxiliary unit 5, and a soft cushion 8. The bottom surface of the seat plate 1 is fixedly connected to the lifting base 3, and the spinous process gap opening auxiliary unit 5 is installed on the bottom surface of the seat plate 1. The soft cushion 8 is fixedly installed on the spinous process gap opening auxiliary unit 5, which is used to adjust the position of the soft cushion 8. The reclining cushion 4 is fixedly installed on one side of the seat plate 1. When an obese patient sits on the seat plate 1, the obese patient's chest contacts the reclining cushion 4, and the obese patient's abdomen contacts the soft cushion 8. The position of the soft cushion 8 is adjusted by the spinous process gap opening auxiliary unit 5 to assist the obese patient in opening the spinous process gap during seated puncture.

[0038] Preferably, such as Figure 2 and Figure 3 As shown, the interspinous space opening auxiliary unit 5 includes a back plate 501, a pushing execution component, a transmission component, and a telescopic hand lever component. The pushing execution component is located on the back of the back plate 501, and the telescopic hand lever component is located at the lower part of the seat plate 1. The telescopic hand lever component is connected to the pushing execution component through the transmission component. When the telescopic hand lever component is extended, it is rotated, and the telescopic hand lever component controls the pushing execution component to push through the transmission component. The pushing execution component pushes the soft pad 8 through the back plate 501, thereby adjusting the position of the soft pad 8 to assist obese patients in opening the interspinous space during seated puncture.

[0039] Preferably, the pushing execution component includes an internally threaded cylinder 502, an externally threaded rod 503, a sliding rod 513, a limiting sleeve 514, an arc-shaped connecting rod 515, and a mounting bracket 516; the middle part of the back plate 501 is fixedly connected to one end of the internally threaded cylinder 502; the sliding rod 513 is installed on both sides of the back plate 501, the sliding rod 513 is slidably connected to the limiting sleeve 514, the limiting sleeve 514 is connected to the seat plate 1 through the arc-shaped connecting rod 515, and the sliding of the sliding rod 513 within the limiting sleeve 514 can restrict the circumferential rotation of the back plate 501 and the internally threaded cylinder 502; the mounting bracket 516... 6 is fixedly connected to the seat plate 1; one end of the external threaded rod 503 is mounted on the mounting bracket 516 and rotatably connected to the mounting bracket 516, thereby restricting the axial movement of the external threaded rod 503; the other end of the external threaded rod 503 is inserted into the internal threaded cylinder 502 and threadedly connected to the internal threaded cylinder 502; the transmission component drives the external threaded rod 503 to rotate, thereby driving the internal threaded cylinder 502 to move along the axis of the external threaded rod 503, so as to adjust the position of the soft pad 8, thereby adjusting the abdomen of the obese patient, so as to assist the obese patient in opening the interspinous space during seated puncture.

[0040] Preferably, the transmission component includes a driven spur gear 504, a transmission belt 505, a driving spur gear 506, a driven helical gear 507, a secondary helical gear 508, and a driving helical gear 509; the driven spur gear 504 is fixedly mounted on one end of the externally threaded rod 503, and the driven spur gear 504 and the driving spur gear 506 are transmitted through the transmission belt 505; the driven helical gear 507 is fixedly mounted on the driving spur gear 506, and the driven helical gear 507 meshes with the secondary helical gear 508; the secondary helical gear 508 meshes with the driving helical gear 509; the driving spur gear 506, the secondary helical gear 508, and the driving helical gear 509 are all mounted on the externally threaded rod 503. The device is mounted on the mounting bracket 516 and is rotatably connected to the mounting bracket 516. The telescopic lever component drives the active helical gear 509 to rotate, the active helical gear 509 drives the intermediate helical gear 508 to rotate, the intermediate helical gear 508 drives the passive helical gear 507 to rotate, the passive helical gear 507 drives the active spur gear 506 fixedly connected to it to rotate, the active spur gear 506 drives the passive spur gear 504 to rotate through the transmission belt 505, and simultaneously drives the external threaded rod 503 to rotate, thereby driving the internal threaded cylinder 502 to move along the axis of the external threaded rod 503, so as to adjust the position of the soft pad 8, thereby adjusting the abdomen of the obese patient, so as to assist the obese patient in opening the interspinous space during seated puncture.

[0041] Preferably, the telescopic lever component includes a rotating shaft 510, a rotating sleeve 511, and a lever 512; the rotating shaft 510 passes through the mounting frame 516 and is rotatably connected to the mounting frame 516; one end of the rotating shaft 510 is fixedly connected to the driving helical gear 509, and the rotating shaft 510 and the rotating sleeve 511 are keyed together, the rotating sleeve 511 can slide relative to the axial direction of the rotating shaft 510, and one end of the rotating sleeve 511 is fixed to the lever 512; rotating the lever 512 causes the rotating sleeve 511 to rotate, the rotating sleeve 511 causes the rotating shaft 510 connected to it to rotate, and the rotating shaft 510 causes the driving helical gear 509 to rotate.

[0042] Preferably, such as Figure 4 As shown, the lumbar support chair also includes a headrest unit 7, which includes a hollow headrest 701, a lifting rod 702, a fixing recess 703, and a pin 704. The fixing recess 703 is fixedly installed on the back of the backrest cushion 4. The lower part of the hollow headrest 701 is fixed to the lifting rod 702. The lifting rod 702 has multiple through holes at different heights, and the lifting rod 702 is slidably connected to the fixing recess 703. The fixing recess 703 has a round hole in the middle, and the pin 704 passes through the round hole of the fixing recess 703 and can be inserted into one of the through holes of the lifting rod 702. By adjusting the insertion of the pin 704 into the through hole of the lifting rod 702, the height of the hollow headrest 701 can be adjusted.

[0043] Preferably, such as Figure 5 As shown, the lifting chassis 3 includes a base plate 301, a lifting platform 302, casters 303, and a foot pedal 304; the lifting platform 302 is fixedly installed on the upper surface of the base plate 301, and the seat plate 1 is installed on the top of the lifting platform 302; multiple casters 303 are provided, and multiple casters 303 are circumferentially installed on the base plate 301; the foot pedal 304 is provided on the side wall of the base plate 301, and the foot pedal 304 is used to place the patient's foot.

[0044] Preferably, a seat cushion 2 is installed on the top surface of the seat plate 1, and the height of the seat cushion 2 away from the soft cushion 8 is greater than the height of the seat cushion 2 close to the soft cushion 8.

[0045] Preferably, such as Figure 6As shown, a positioning fixation component 9 is installed on two opposite sides of the seat plate 1. The positioning fixation component 9 is used to fix the patient. The positioning fixation component 9 includes a positioning fixation plate 901 and a connecting plate 902. One side of the connecting plate 902 is fixedly connected to the seat plate 1, and the other side is connected to the positioning fixation plate 901. The positioning fixation plate 901 is in contact with the patient. The connecting plate 902 is a telescopic plate, which can adjust the distance between the two positioning fixation plates 901, so that the positioning fixation component 9 can be adapted to patients of different weights.

[0046] Preferably, such as Figure 6 As shown, the body positioning plate 901 is equipped with an infusion support.

[0047] Preferably, the back of the reclining cushion 4 is fixed with a tray 6, which can provide support when the obese patient hugs the reclining cushion 4 with his / her arms.

[0048] Preferably, such as Figure 7 As shown, the mounting bracket 516 includes a first bracket 517 and a second bracket 518. The second bracket 518 is fixedly connected to the first bracket 517. The second bracket 518 is used to mount the external threaded rod 503 and the driving spur gear 506. Both the external threaded rod 503 and the driving spur gear 506 are rotatably connected to the second bracket 518. The second bracket 518 is also used to restrict the movement of the external threaded rod 503 along its axis. The first bracket 517 is provided with a first mounting seat 519, a second mounting seat 520, and a third mounting seat 521. 517 is fixedly mounted on the bottom surface of the base plate 1 via a first mounting base 519, so that the mounting bracket 516 is fixedly connected to the base plate 1; the first mounting base 519 is used to mount the rotating shaft 510, and the rotating shaft 510 is rotatably connected to the first mounting base 519; the second mounting base 520 is used to mount the driving helical gear 509, and the driving helical gear 509 is rotatably connected to the second mounting base 520; the third mounting base 521 is used to mount the intermediate helical gear 508, and the intermediate helical gear 508 is rotatably connected to the third mounting base 521.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning chair for obese patients undergoing lumbar anesthesia, characterized in that, The device includes a seat (1), a lifting base (3), a reclining cushion (4), a spinous process gap opening auxiliary unit (5), and a soft cushion (8). The seat (1) is fixedly connected to the lifting base (3), and the spinous process gap opening auxiliary unit (5) is installed on the seat (1). The soft cushion (8) is fixedly installed on the spinous process gap opening auxiliary unit (5). The spinous process gap opening auxiliary unit (5) is used to adjust the position of the soft cushion (8). The reclining cushion (4) is fixedly installed on one side of the seat (1). When an obese patient sits on the seat (1), the obese patient's chest contacts the reclining cushion (4), and the obese patient's abdomen contacts the soft cushion (8). The spur gap opening auxiliary unit (5) includes a back plate (501), a push execution component, a transmission component, and a telescopic hand lever component; The push execution member is located on the back plate (501), and the telescopic hand lever member is located at the lower part of the seat plate (1). The telescopic hand lever member is connected to the push execution member through the transmission member. When the telescopic hand lever member is extended, the telescopic hand lever member is rotated. The telescopic hand lever member can control the push execution member to push through the transmission member. The push execution member pushes the soft pad (8) through the back plate (501).

2. The spinal positioning chair for obese patients according to claim 1, characterized in that, The pushing execution component includes an internally threaded cylinder (502), an externally threaded rod (503), a sliding rod (513), a limiting sleeve (514), an arc-shaped connecting rod (515), and a mounting bracket (516); the back plate (501) is fixedly connected to the internally threaded cylinder (502); the mounting bracket (516) is fixedly connected to the seat plate (1); the limiting sleeve (514) is connected to the seat plate (1) through the arc-shaped connecting rod (515); one end of the externally threaded rod (503) is mounted on the mounting bracket (516) and rotatably connected to the mounting bracket (516), and the other end of the externally threaded rod (503) is inserted into the internally threaded cylinder (502) and threadedly connected to the internally threaded cylinder (502); the sliding rod (513) is installed on both sides of the back plate (501), and the sliding rod (513) is slidably connected to the limiting sleeve (514).

3. The spinal positioning chair for obese patients according to claim 2, characterized in that, The transmission components include a passive spur gear (504), a transmission belt (505), a driving spur gear (506), a passive helical gear (507), a secondary helical gear (508), and a driving helical gear (509). The passive spur gear (504) is fixedly installed at one end of the external threaded rod (503). The passive spur gear (504) and the driving spur gear (506) are driven by the transmission belt (505). The passive helical gear (507) is fixedly installed on the driving spur gear (506). The passive helical gear (507) meshes with the secondary helical gear (508). The secondary helical gear (508) meshes with the driving helical gear (509). The driving spur gear (506), the secondary helical gear (508), and the driving helical gear (509) are all installed on the mounting bracket (516) and are rotatably connected to the mounting bracket (516).

4. The spinal positioning chair for obese patients according to claim 3, characterized in that, The telescopic lever component includes a rotating shaft (510), a rotating sleeve (511), and a lever (512); the rotating shaft (510) passes through the mounting frame (516) and is rotatably connected to the mounting frame (516); one end of the rotating shaft (510) is fixedly connected to the driving helical gear (509), and the rotating shaft (510) and the rotating sleeve (511) are keyed together; the rotating sleeve (511) can slide relative to the axis of the rotating shaft (510), and one end of the rotating sleeve (511) is fixed to the lever (512).

5. The spinal positioning chair for obese patients according to claim 4, characterized in that, The mounting bracket (516) includes a first bracket (517) and a second bracket (518). The second bracket (518) is fixedly connected to the first bracket (517) and is used to install the external threaded rod (503) and the driving spur gear (506). The first bracket (517) is provided with a first mounting seat (519), a second mounting seat (520) and a third mounting seat (521). The first bracket (517) is fixedly installed on the base plate (1) through the first mounting seat (519). The first mounting seat (519) is used to install the rotating shaft (510), the second mounting seat (520) is used to install the driving helical gear (509), and the third mounting seat (521) is used to install the intermediate helical gear (508).

6. The spinal positioning chair for obese patients according to claim 1, characterized in that, It also includes a headrest unit (7), which includes a hollow headrest (701), a lifting rod (702), a fixing recess (703), and a pin (704); the fixing recess (703) is fixedly installed on the backrest cushion (4); the hollow headrest (701) fixes the lifting rod (702), the lifting rod (702) has multiple through holes at different heights, and the lifting rod (702) is slidably connected to the fixing recess (703), the fixing recess (703) has a round hole, and the pin (704) passes through the round hole of the fixing recess (703) and can be inserted into one of the through holes of the lifting rod (702).

7. The spinal positioning chair for obese patients according to claim 1, characterized in that, The lifting chassis (3) includes a base plate (301), a lifting platform (302), casters (303), and a foot pedal (304); the lifting platform (302) is fixedly installed on the upper surface of the base plate (301), the seat plate (1) is fixedly installed on the lifting platform (302), the casters (303) are installed on the base plate (301), and the foot pedal (304) is located on the side wall of the base plate (301).

8. The spinal positioning chair for obese patients according to claim 6 or 7, characterized in that, The seat plate (1) is equipped with a body position fixing component (9) on two opposite sides. The body position fixing component (9) includes a body position fixing plate (901) and a connecting plate (902). One side of the connecting plate (902) is fixedly connected to the seat plate (1), and the other side is connected to the body position fixing plate (901).

9. The spinal positioning chair for obese patients according to claim 8, characterized in that, The connecting plate (902) is a telescopic plate; the body positioning plate (901) is equipped with an infusion support.

10. The spinal positioning chair for obese patients according to claim 9, characterized in that, The back of the reclining cushion (4) is fixed with a tray (6), which provides support when an obese patient hugs the reclining cushion (4) with their arms.

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