Body position conversion device for nursing critical patient

Abstract

The invention belongs to the technical field of medical nursing devices, and particularly relates to a body position conversion device for nursing a critical patient. Comprising a bed frame, side protection plates are fixedly installed on the two sides of the bed frame, an installation groove plate is installed at the bottom of the bed frame, a jack assembly is installed on the front section of the installation groove plate, a rotating column is installed on the rear section of the middle of the installation groove plate, a rear-section bed plate is connected to the upper end of the rotating column, and the front-section bed plate and the rear-section bed plate are hinged through a detachable self-locking hinge. A mounting seat is arranged at the front end of the mounting groove plate, and a steel cable is wound on the mounting seat, penetrates through the top end of the jack assembly and is connected with a rack assembly. The lifting jack assembly and the rack plate assembly which are in linkage are arranged, body position conversion of a patient can be achieved through linkage adjustment in the using process, different from conventional side turning conversion, the body position conversion practicability is higher, after the patient is converted into the sitting position from the horizontal position, the patient can conveniently eat, and after the patient is converted into the side sitting position from the horizontal position, the patient can conveniently take food. And the patient can get out of bed conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of medical nursing devices, and in particular relates to a body position conversion device for nursing critically ill patients. Background Art

[0002] Critically ill patients are patients with unstable vital signs, rapidly changing conditions, unstable functions of more than two organ systems, and the progression of reduced or failing conditions may endanger the patient's life. Critically ill patients have severe conditions, rapidly changing conditions, multiple catheters, varying degrees of impaired consciousness, and are often bedridden. They often have loss of appetite or are unable to eat. Nursing of critically ill patients is a high-risk process. We should strengthen the management of critically ill patients, improve the key links of nursing levels, eliminate possible hidden dangers in the bud, avoid medical disputes and accidents, ensure the safety of nursing for critically ill patients, and establish a management standard for the diagnosis and treatment process of critically ill patients that is "patient-centered, with medical quality and safety first". This is of great significance for standardizing the diagnosis and treatment behaviors of medical staff, improving medical quality, preventing medical disputes, and providing patients with safe, timely and effective medical services.

[0003] At present, in hospitals, the body position of patients is usually changed by medical staff or accompanying personnel. In the existing technology, if a patient needs to be changed from a lying position to a semi-lying position, sitting upright, or sitting sideways, it is usually changed by several medical staff together. The operation is relatively cumbersome and requires a large number of people to cooperate, which urgently needs to be improved.

[0004] In response to this problem, the existing patent application number is 202411160868.8, and the name is "A patient position conversion auxiliary device", which includes a base plate, the rear side of the base plate is fixedly connected to a bedside mounting cabinet, the front side of the base plate is fixedly connected to a footboard guard plate, the inner wall of the bedside mounting cabinet is fixedly connected to an auxiliary sleeping mechanism, the upper side of the base plate is fixedly connected to an auxiliary heating mechanism, and the front side of the bedside mounting cabinet and the rear side of the footboard guard plate are fixedly connected to the same heating box. By setting an auxiliary heating mechanism and an electric heating slider, after the reciprocating motor is controlled by the control panel, the auxiliary heating mechanism can allow the electric heating slider to reciprocate in the heating box, avoiding the electric heating slider from heating a single position for a long time, and preventing the patient's back from low-temperature burns. When the auxiliary heating mechanism is in operation, the auxiliary sleeping mechanism can also be linked to the auxiliary sleeping mechanism through the reducer, so that the auxiliary sleeping mechanism can intermittently release gas to help the patient sleep, allowing the patient to rest better.

[0005] It can be seen that this patent can only realize the patient's side-turning, but cannot realize the patient's body position conversion from supine position to sitting position and from supine position to lateral position.

[0006] There is also a patent with application number "202411184553.7" and titled "Posture conversion auxiliary device and method for ICU ward nursing", which includes a bed body and bed rails installed on both sides thereof, a body rollover device arranged between the two bed rails, and the body rollover device includes a rollover belt, a pair of belt reel for storing the rollover belt, a reel for rewinding the rollover belt, a reel linked to the rollover belt, and a servo motor for driving the reel or reel to rotate. By switching between the reel and the reel, the servo motor is driven to release the rollover belt and the reel to rewind the rollover belt, thereby supporting the body position conversion of the left side flipping of the body; in another case, the reel is driven to rewind the rollover belt and the reel releases the rollover belt, thereby supporting the body position conversion of the right side flipping of the body. This device is easy to operate and suitable for use on different beds, so that patients can change their positions in time to avoid the occurrence of pressure sores.

[0007] It can be seen that the prior art also realizes the side-turning of the patient's body, and cannot solve the technical problem that the patient needs to switch the body position from the supine position to the sitting position and from the supine position to the lateral position. Summary of the invention

[0008] In view of the technical problem that the patient needs to switch body positions from supine position to sitting position and from supine position to lateral position in the above-mentioned prior art, the present invention proposes the following technical ideas.

[0009] Technical idea: Starting from the problems of the prior art, a linked jack assembly + rack plate assembly is provided. When in use, the patient's position can be changed through the linked adjustment of the jack assembly + rack plate assembly. Different from the conventional side-turning conversion, the position conversion of the present invention is more practical. After the patient is turned from a supine position to a sitting position, it is convenient for the patient to eat. After the patient is turned from a supine position to a side-sitting position, it is convenient for the patient to get out of bed.

[0010] In order to achieve the above technical effects, the technical solutions adopted by the present invention are as follows: A body position conversion device for nursing critically ill patients comprises a bed frame, side guard plates are fixedly installed on both sides of the bed frame, a mounting slot plate is installed on the bottom of the bed frame, a jack assembly is installed on the front section of the mounting slot plate, the upper end of the jack assembly is hinged to the front section of the bed board, a rotating column is installed at the middle rear section of the mounting slot plate, the upper end of the rotating column is connected to the rear section of the bed board, the front section of the bed board and the rear section of the bed board are hinged by a detachable self-locking hinge, a mounting seat is arranged at the front end of the mounting slot plate, a steel cable is wound around the mounting seat, the steel cable passes through the top end of the jack assembly, and is connected to a rack assembly.

[0011] Preferably, the jack assembly includes a manual hydraulic pump and a jack, the manual hydraulic pump is fixedly mounted on the side plate of the bed frame, and the output pipe of the manual hydraulic pump is connected to the jack.

[0012] Preferably, the rack assembly includes a spring and a rack plate, one end of the spring is fixedly arranged on the inner plate of the rear end of the bed frame, the other end of the spring is fixedly connected to the rack plate, and the end of the rack plate is connected to the steel cable.

[0013] Preferably, the rotating column is rotatably arranged on the mounting groove plate, and a gear ring meshing with the rack plate is arranged at the bottom.

[0014] Preferably, the rear section of the bed board is slidably arranged on the side guard plates.

[0015] An operating method of a posture conversion device for critically ill patient care, including converting a supine position to an upright sitting position and a supine position to a sideways sitting position, S1: When a critically ill bedridden patient needs to sit up, the medical staff lifts the jack with a manual hydraulic pump, and the upper end of the jack slowly lifts the front bed board. When the front bed board is slowly lifted, the rear bed board slides with the front bed board to convert the patient from a supine position to a sitting position. When the front bed board is adjusted to be vertical, the self-locking hinge is self-locked to fix the rear bed board; S2: When a critically ill bedridden patient needs to be converted from a supine position to a side-sitting position, a self-locking hinge is not provided. The patient is adjusted to a sitting position between 0-90°, and then the motor is started to rotate forward. The rotating shaft connected to the motor winds the steel cable around, pulling the rack plate toward the head of the bed. Then, the rack plate meshes with the gear ring at the bottom of the rotating column, and the rotating column rotates. Then, the torque drives the rear section of the bed board to rotate horizontally, thereby realizing the conversion of the side-sitting position. When it needs to turn back, the motor will reverse, the steel cable will relax, and the tightened spring will reset, driving the rack plate to move in the opposite direction, and then driving the gear ring to rotate in the opposite direction, thereby driving the rotating column to rotate in the opposite direction, thereby realizing the reset of the rear section of the bed board.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The device of the present invention can realize two body position conversions of the patient from supine position to upright sitting position and from supine position to sideways sitting position.

[0017] When a critically ill bedridden patient needs to turn from a supine position to an upright sitting position, the medical staff lifts the jack with a manual hydraulic pump, and the upper end of the jack slowly lifts the front bed board. When the front bed board is slowly lifted, the rear bed board slides with the front bed board to turn the patient from a supine position to an upright sitting position. When the front bed board is adjusted to be vertical, the self-locking hinge is self-locked to fix the rear bed board. When a critically ill bedridden patient needs to be converted from a supine position to a side-sitting position, a self-locking hinge is not provided. The patient is first converted from a supine position to an upright sitting position, and the patient is adjusted to an upright sitting position between 0-90 degrees. Then the motor is started to rotate forward, and the rotating shaft connected to the motor winds the steel cable, pulling the rack plate toward the head of the bed. Then, the rack plate meshes with the gear ring at the bottom of the rotating column, and the rotating column rotates, and then the rear section of the bed board is driven to rotate in the horizontal direction through the action of torque, thereby realizing the conversion of the side-sitting position. When it needs to turn back, the motor will reverse, the steel cable will relax, and the tightened spring will reset, driving the rack plate to move in the opposite direction, and then driving the gear ring to rotate in the opposite direction, thereby driving the rotating column to rotate in the opposite direction, thereby realizing the reset of the rear section of the bed board.

[0018] 2. The present invention is provided with a linked jack assembly + rack plate assembly. When in use, the patient's position can be changed through the linked adjustment of the jack assembly + rack plate assembly. Different from the conventional rollover conversion, the position conversion of the present invention is more practical. After the patient is turned from a supine position to a sitting position, it is convenient for the patient to eat. After the patient is turned from a supine position to a side-sitting position, it is convenient for the patient to get out of bed.

[0019] 3. Generally, when medical staff need to change the dressings on the patient's neck, back, legs, check wounds, change sheets and mattresses, several medical staff need to work together to change the patient's position, which is time-consuming and laborious, and requires more people to cooperate. The device of the present invention has more body positions, and the patient can be changed from lying to half-lying, sitting, and side-sitting, which greatly facilitates the medical staff's care of the patient and helps the patient exercise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] In the attached picture: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Example 1 of the present invention without side guard plates; Figure 3 It is a cross-sectional view of the sliding groove and the sliding block of Example 1 of the present invention; Figure 4 It is a structural schematic diagram of the self-locking hinge of the present invention; Figure 5 It is a front view structural schematic diagram of embodiment 2 of the present invention; Figure 6 It is a rear view structural schematic diagram of embodiment 2 of the present invention; Figure 7 It is a schematic structural diagram of the rack plate and the gear ring of the present invention.

[0022] Among them: 1. Bed frame, 101. Long side board, 102. Short side board, 103. High guard plate, 104. Side guard plate, 105. Reinforcement rod, 106. Flexible pad, 2. Universal wheel, 3. Mounting slot plate, 4. Front bed board, 5. Rotating column, 501. Sliding block, 6. Rear bed board, 601. Sliding slot, 7. Mounting seat, 8. Steel cable, 9. Manual hydraulic pump, 10. Jack, 11. Spring, 12. Rack plate, 13. Gear ring, 14. Output pipe, 15. Airbag strip, 16. Self-locking hinge, 17. Motor, 18. Rotating shaft, 19. Rotating shaft, 20. Ball hinge. DETAILED DESCRIPTION

[0023] In order to enable ordinary technicians in this field to better understand the technical solution of the present invention, the following Figure 1-Figure 7 The technical solution of the present invention is further described with embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0025] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In current clinical treatment, especially in the treatment and care of critically ill patients, doctors often need to help patients change their body positions, such as adjusting a patient in a supine position to a sitting position, to facilitate medical staff to change dressings on the patient's neck, back, and legs, check wounds, change bed sheets and mattresses, etc. However, current devices cannot effectively achieve the goal of converting patients from a supine position to a sitting position and then to a side-sitting position.

[0027] Based on the above problems, the present invention provides a body position conversion device for critically ill patient care, including a bed frame 1, a mounting slot plate 3 is installed at the bottom of the bed frame 1, a jack assembly is installed on the front section of the mounting slot plate 3, a mounting seat 7 is provided at the front end of the mounting slot plate 3, a steel cable 8 is wound around the mounting seat 7, the steel cable 8 passes through the top of the jack assembly, and is connected to a rack assembly. Embodiment 1:

[0028] Refer to the attached Figure 1-7 A body position conversion device for critically ill patient care includes a bed frame 1, which includes a long side plate 101, a short side plate 102, a high guard plate 103 and a side guard plate 104. Two groups of long side plates 101 and short side plates 102 are surrounded by a rectangular structure to constitute the main body of the bed frame 1. The short side plate 102 is welded by a plate and a cylinder. A universal wheel 2 is provided at the bottom of the cylinder to facilitate medical staff to move the entire device to a suitable position.

[0029] Two side guard plates 104 are fixedly arranged at the upper end of the cylinder, and the ends of the side guard plates 104 are fixedly connected to the high guard plate 103, which can be connected by welding or by angle irons and bolts.

[0030] Furthermore, the height of the high guard plate 103 is higher than that of the side guard plates 104, which can facilitate the patient to lean on after getting up independently; Furthermore, in order to strengthen the connection between the side guard plate 104 and the high guard plate 103, a plurality of reinforcing rods 105 are provided between the two side guard plates 104 and connected by welding, which can strengthen the overall stability of the side guard plates 104.

[0031] Furthermore, in order to ensure that there is no gap between the bed board and the high guard plate 103 after it is laid flat, flexible pads 106 are provided on the inner sides of the two high guard plates 103, and a complete fit is achieved by squeezing the flexible pads 106 by the ends of the bed board.

[0032] A mounting groove plate 3 is installed at the bottom of the bed frame 1. The mounting groove plate 3 is a long strip plate with a U-shaped groove, and both ends are fixedly connected to the plates of the short side plates 102 respectively.

[0033] A jack assembly is installed on the front section of the mounting groove plate 3 near the head of the bed. The jack assembly includes a manual hydraulic pump 9 and a jack 10. The manual hydraulic pump 9 is fixed to the outer wall of the long side plate 101 of the bed frame 1 by bolts. The manual hydraulic pump 9 is an existing device, which adopts the SYB-1 model of Jining Yuze Industrial Technology Co., Ltd.

[0034] Furthermore, a foot-operated hydraulic pump can also be used. If a foot-operated hydraulic pump is used, a horizontal mounting plate needs to be fixedly installed on the outer wall of the long side plate 101, and the foot-operated hydraulic pump is installed thereon. When using it, medical staff only need to stand and put their feet in to step on it, without bending over to operate.

[0035] Whether a foot-operated hydraulic pump or a manual hydraulic pump is used, both are existing mature devices, and the specific structure will not be described in detail in the present invention.

[0036] The output pipe 14 of the manual hydraulic pump is a curved pipe, which passes through the long side plate 101 of the bed frame 1 and the mounting slot plate 3, and is connected to the jack 10 to provide power for the jack 10.

[0037] The upper end of the jack 10 is spherically hinged to the bottom surface of the front bed board 4, and a rotating column 5 is rotatably installed in the middle of the mounting groove plate 3 near the rear section, and the upper end of the rotating column 5 is slidably connected to the rear bed board 6. The front bed board 4 and the rear bed board 6 are hinged by a rotating shaft 19, and the two ends of the rotating shaft 19 are spherically hinged to the front bed board 4 and the rear bed board 6, that is, the front bed board 4 and the rear bed board 6 can be folded and rotated.

[0038] Furthermore, the front bed board 4 and the rear bed board 6 are both provided with upturned side edges, forming a U-shaped structure, which can prevent the patient from falling off the bed after the body position is changed, and has a certain safety protection effect.

[0039] Furthermore, since critically ill patients cannot get out of bed and move around, they stay in bed for a long time, which can easily lead to pressure sores on the patients' bodies. In order to avoid this problem, the present invention provides airbag strips 15 on the upper surfaces of the front bed board 4 and the rear bed board 6. There are gaps between the airbag strips 15 to ensure that the patient's skin is not completely in contact with the bed board, thereby avoiding the problem of pressure sores.

[0040] A sliding groove 601 is provided on the bottom surface of the rear bed board 6 , and a square sliding block 501 is fixedly provided on the top of the rotating column 5 , and the sliding block 501 is slidably arranged in the sliding groove 601 .

[0041] When the front section of the bed board 4 needs to be lifted to a certain angle, the medical staff lifts the jack 10 through the action of the manual hydraulic pump 9, and the upper end of the jack 10 slowly lifts the front section of the bed board 4. When the front section of the bed board 4 is slowly lifted, the rear section of the bed board 6 will slide in the opposite direction close to the front section of the bed board 4.

[0042] Furthermore, in order to ensure the sliding stability of the rear section bed board 6, a sliding groove can be opened on the inner wall of the side guard plate 104, and a sliding block that cooperates with the sliding groove is set on the upturned side edge of the rear section bed board 6, thereby achieving smooth sliding.

[0043] In order to achieve the connection stability of the front bed board 4 and the rear bed board 6 after rotation, a self-locking hinge 16 is detachably connected to the side edge where the front bed board 4 and the rear bed board 6 are connected by bolts. The self-locking hinge 16 is an existing self-locking hinge structure, which self-locks when it is 90°, thereby achieving fixation.

[0044] The method of using this embodiment is as follows: There is a critically ill patient lying in bed who needs to sit up. The medical staff lifts the jack 10 through the action of the manual hydraulic pump 9. The upper end of the jack 10 slowly lifts the front bed board 4. When the front bed board 4 is slowly lifted, the rear bed board 6 will slide in the opposite direction close to the front bed board 4. Finally, the patient will be able to transform from a lying position to a sitting position without moving. After adjusting to a vertical position, the self-locking hinge can be self-locked to fix the rear bed board 6. Embodiment 2:

[0045] On the basis of Example 1, different from Example 1, the front section bed board 4 and the rear section bed board 6 of this embodiment are connected by a spherical hinge 19, and a self-locking hinge 16 is not provided, so that the front section bed board 4 and the rear section bed board 6 can rotate sideways.

[0046] A U-shaped mounting seat 7 is provided at the front end of the mounting slot plate 3, and a motor 17 is fixedly provided on the outer wall of the mounting seat 7. The output shaft of the motor 17 is fixedly connected to a rotating shaft 18, and the end of a steel cable 8 is fixed on the rotating shaft 18, and the steel cable 8 is wound thereon, and the other end of the steel cable 8 passes through the top of the jack 10 and is connected to a rack assembly.

[0047] Furthermore, a through hole is formed on the top of the jack 10, through which the steel cable 8 passes.

[0048] The rack assembly includes a spring 11 and a rack plate 12 . One end of the spring 11 is fixedly arranged on the inner side of the short side plate 102 at the rear of the bed frame 1 . The other end of the spring 11 is fixedly connected to the rack plate 12 . The end of the rack plate 12 is connected to the steel cable 8 .

[0049] Furthermore, a gear ring 13 meshing with the rack plate 12 is provided at the bottom of the rotating column 5 .

[0050] Furthermore, in order to ensure the stability of the rack plate 12 during sliding, a T-shaped groove is provided on the inner bottom surface of the mounting groove plate 3, and a T-shaped slider matching the T-shaped groove is provided at the bottom of the rack plate 12, so that the rack plate 12 can slide smoothly and the meshing of the rack plate 12 and the gear ring 13 can be ensured.

[0051] The method of using this embodiment is as follows: There is a critically ill patient lying in bed who needs to be converted from a stable position to a side-sitting position. The first step is the same as the method in Example 1, but since the self-locking hinge is disassembled, the patient cannot be converted to a 90° sitting position.

[0052] At this time, the patient is in an upright sitting position between 0-90 degrees, and then the motor 17 is started to rotate forward, and the rotating shaft 18 connected to the motor 17 winds the steel cable 8, pulling the rack plate 12 to move toward the head of the bed, and then the rack plate 12 engages with the gear ring 13 at the bottom of the rotating column 5, and the rotating column 5 rotates, and then the rear section of the bed board 6 is driven to rotate in the horizontal direction through the action of torque, thereby realizing the conversion of the lateral rotation position.

[0053] When it is necessary to turn back, the motor 17 will reverse, the steel cable 8 will relax, and the tightened spring 11 will reset, driving the rack plate 12 to move in the opposite direction, and then driving the ring gear 13 to rotate in the opposite direction, thereby driving the rotating column 5 to rotate in the opposite direction, thereby realizing the reset of the rear section of the bed board 6.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A posture conversion device for critically ill patient care, comprising a bed frame (1), characterized in that: A mounting slot plate (3) is installed at the bottom of the bed frame (1), a jack assembly is installed on the front section of the mounting slot plate (3), the upper end of the jack assembly is hinged to the front section bed board (4), a rotating column (5) is installed at the middle rear section of the mounting slot plate (3), the upper end of the rotating column (5) is connected to the rear section bed board (6), the front section bed board (4) and the rear section bed board (6) are hinged by a detachable self-locking hinge (16), a mounting seat (7) is arranged at the front end of the mounting slot plate (3), a steel cable (8) is wound around the mounting seat (7), the steel cable (8) passes through the top end of the jack assembly, and is connected to the rack assembly.

2. A body position conversion device for critically ill patient care according to claim 1, characterized in that: The jack assembly comprises a manual hydraulic pump (9) and a jack (10); the manual hydraulic pump (9) is fixedly mounted on a side plate of the bed frame (1); and an output pipe (14) of the manual hydraulic pump (9) is connected to the jack (10).

3. A body position conversion device for nursing critically ill patients according to claim 2, characterized in that: The rack assembly comprises a spring (11) and a rack plate (12), one end of the spring (11) is fixedly arranged on the inner plate of the rear end of the bed frame (1), the other end of the spring (11) is fixedly connected to the rack plate (12), and the end of the rack plate (12) is connected to the steel cable (8).

4. A body position conversion device for nursing critically ill patients according to claim 3, characterized in that: The rotating column (5) is rotatably mounted on the mounting slot plate (3), and a gear ring (13) is disposed at the bottom thereof and meshes with the rack plate (12).

5. A body position conversion device for nursing critically ill patients according to claim 4, characterized in that: The rear bed board (6) is slidably arranged on the side guard plate (2).

6. The method for operating the posture conversion device for critically ill patient care according to any one of claims 1 to 5, characterized in that: Including supine position to upright sitting position and supine position to side sitting position, S1: When a critically ill bedridden patient needs to sit up, the medical staff lifts the jack (10) through the manual hydraulic pump (9), and the upper end of the jack (10) slowly lifts the front bed board (4). When the front bed board (4) is slowly lifted, the rear bed board (6) slides along with the front bed board (4) to convert the patient from a supine position to a sitting position. After the front bed board (4) is adjusted to be vertical, the self-locking hinge (16) is self-locked to fix the rear bed board (6); S2: When a critically ill bedridden patient needs to be converted from a supine position to a side-sitting position, a self-locking hinge is not provided. The patient is adjusted to a sitting position between 0 and 90 degrees in the same manner as in S1. Then, the motor (17) is started to rotate forward. The rotating shaft (18) connected to the motor (17) winds the steel cable (8) and pulls the rack plate (12) toward the head of the bed. Then, the rack plate (12) meshes with the gear ring (13) at the bottom of the rotating column (5), and the rotating column (5) rotates. Then, the rear section of the bed board (6) is driven to rotate in the horizontal direction through the action of torque, thereby realizing the conversion of the side-sitting position. When it is necessary to turn back, the motor (17) is reversed, the steel cable (8) is relaxed, and the tightened spring (11) is reset, driving the rack plate (12) to move in the opposite direction, thereby driving the gear ring (13) to rotate in the opposite direction, thereby driving the rotating column (5) to rotate in the opposite direction, thereby achieving the reset of the rear section of the bed board (6).

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