Hospital bed for immobilizing lower limbs

Abstract

The utility model relates to a sickbed for fixing lower limbs, including bed body, adjusting assembly and fixed component, adjusting assembly includes length adjusting portion, height adjusting portion and telescopic portion connected in proper order, length adjusting portion sets up in the both sides of bed body along bed body length direction, can drive height adjusting portion to adjust length direction position, height adjusting portion can drive telescopic portion to adjust height direction position, telescopic portion sets up along bed body width direction, can drive fixed component to adjust width direction position. Fixed component includes bottom plate, drive portion and support portion, bottom plate is connected in telescopic portion, the annular support of which is equipped with the sliding, the rotary support of support portion adapts knee joint, fixed support adapts shank portion, and mutually articulates, and the other end of fixed support is connected with drive portion slidingly, and drive portion drives fixed support to move to adjust the included angle of both. The utility model realizes multidimensional adjustment, adapts patient leg form and position demand, promotes fixed stability and comfort, is applicable to orthopedics lower limb fixed recuperation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a hospital bed for fixing the lower limbs. Background Technology

[0002] Orthopedic patients, especially those with leg injuries or after surgery, often require prolonged bed rest and lower limb immobilization and elevation to keep the affected limb above heart level to promote venous return, thereby preventing complications such as swelling, pain, and pressure sores. This also meets the immobilization and support needs during rehabilitation, reduces the risk of secondary injury, and ensures nursing safety and patient recovery efficiency. However, current lower limb immobilization devices have several problems in practical application: First, the flexibility of support adjustment is insufficient. For example, when using slings to elevate the affected limb, the lack of a stable clamping structure means that even slight movement of the patient's leg can cause secondary injury. Furthermore, the height and length adjustment mechanisms of the support device are imperfect, failing to accurately adapt to differences in patient height and leg length, easily leading to improper support positioning, affecting blood circulation, and hindering the rehabilitation process. Second, the support adaptability is poor. Existing leg supports are mostly single fixed flat plates that cannot conform to the natural curvature of the knee joint and lower leg, nor can they adapt to the different leg lengths of different patients. This results in localized pressure or gaps between the patient's leg and the support plate, which can easily cause discomfort with prolonged use and even increase the risk of local tissue damage. Therefore, developing a lower limb fixation bed that can flexibly adjust its height, length, and width, and adapt to the shape of the knee joint and lower leg, is an urgent problem that needs to be solved. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a hospital bed for lower limb fixation, solving the problems of inconvenient adjustment of height, length, and width in existing support devices, inability to adapt to different patient limb sizes and body positions, and poor comfort and risk of secondary injury due to the support structure's difficulty in conforming to the natural shape of the knee joint and lower leg. By setting up multi-dimensional adjustable components, the fixation structure can be flexibly adjusted in the length, height, and width of the bed. Combined with an adjustable support that conforms to the leg contour, the adaptability, stability, and comfort of lower limb fixation are improved, meeting the personalized needs of orthopedic patients for lower limb fixation and reducing the risk of complications.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A hospital bed for stabilizing the lower limbs includes:

[0006] Bed frame;

[0007] An adjustment assembly includes a length adjustment section, a height adjustment section, and a telescopic section arranged in series. The length adjustment section is located on one or both sides of the bed and extends along the length direction of the bed. The height adjustment section is slidably mounted on the length adjustment section and is used to drive the height adjustment section to adjust its position along the length direction of the bed. The telescopic section is located at the upper end of the height adjustment section along the width direction of the bed and is used to drive the telescopic section to adjust its position along the height direction of the bed. The telescopic section is also used to drive its free end to adjust its position along the width direction of the bed.

[0008] A fixing component is disposed at the free end of the telescopic portion, wherein the fixing component includes:

[0009] A base plate, the lower part of which is connected to the free end of the telescopic part, and an annular bracket is slidably provided on the base plate along its length direction;

[0010] A drive unit is disposed on the upper part of the base plate;

[0011] The support portion includes a rotating bracket and a fixed bracket. The rotating bracket is adapted to the contour of the knee joint to support the knee joint, and the fixed bracket is adapted to the contour of the lower leg to support the lower leg. One end of the rotating bracket is rotatably connected to one end of the annular bracket, and the other end is rotatably connected to one end of the fixed bracket. The other end of the fixed bracket is connected to the upper part of the driving portion. The driving portion is used to drive the fixed bracket to move along the length direction of the base plate to adjust the angle between the rotating bracket and the fixed bracket.

[0012] According to one example, the length adjustment part includes a guide rod and a slider, the guide rod being fixed to both sides of the bed along the length direction of the bed, and the slider being slidably disposed on the guide rod;

[0013] The height adjustment unit includes a fixed column and a support rod. The fixed column is disposed on the outer side wall of the slider, and the support rod is slidably inserted through the fixed column along the height direction of the bed, with the upper end of the support rod extending horizontally toward the middle of the bed.

[0014] The telescopic part includes a sleeve and a telescopic rod. The sleeve is fixed to the upper end of the support rod along the width direction of the bed. The telescopic rod is slidably inserted into one end of the sleeve, and the free end of the telescopic rod is connected to the lower part of the base plate.

[0015] According to one example, a connecting rod is provided at the lower part of the base plate, and a hollow cylinder is provided at the free end of the telescopic rod, the hollow cylinder being detachably connected to the connecting rod.

[0016] According to one example, the guide rod has a convex cross-section, and the inner wall of the slider has a convex groove that mates with the convex guide rod.

[0017] According to one example, the upper part of the guide rod has a plurality of first insertion holes spaced apart along its length, and the upper part of the slider has a second insertion hole that mates with the first insertion holes. The second insertion hole and the first insertion hole are connected by a pin to fix the position of the slider on the guide rod.

[0018] According to one example, the side wall of the fixing post is threaded with a screw, one end of which abuts against the outer wall of the support rod to lock the support rod at the height position of the fixing post.

[0019] According to one example, the drive unit includes a pair of guide rails fixed to the base plate, a motor and a rotating rod are connected in series between the two guide rails, a slide plate is slidably disposed on the upper part of the two guide rails, and the lower part of the slide plate is throttle-connected to the rotating rod, and the other end of the fixed bracket is rotatably connected to the upper part of the slide plate.

[0020] According to one example, the upper part of the rotating bracket is provided with a first flexible band for supporting the knee joint; the upper part of the fixed bracket is provided with a second flexible band for supporting the lower leg.

[0021] According to one example, one end of the rotating bracket is rotatably connected to one end of the annular bracket via a connecting column, the axis of which is parallel to the width direction of the base plate.

[0022] According to one example, the upper part of the base plate, on the side away from the support portion, is provided with a support frame for supporting the feet.

[0023] This utility model has the following advantages:

[0024] This invention relates to a hospital bed for stabilizing the lower limbs, comprising an adjustment component and a fixation component. The adjustment component includes a length adjustment section, a height adjustment section, and a telescopic section. The length adjustment section, through a sliding engagement between a convex guide rod and a slider, combined with a locking mechanism using a pin, allows the height adjustment section to move and be positioned along the length of the bed. The height adjustment section, through a sliding engagement between a fixed column and a support rod, and a screw locking structure, controls the raising and lowering height of the support rod, elevating the affected limb to an optimal position above heart level to promote venous return. The telescopic section, through a sliding engagement between a sleeve and a telescopic rod, and positioning via a locking pin, allows adjustment of the distance between the fixation component and the affected limb along the width of the bed, adapting to the differences in lower limb size among patients.

[0025] The fixation component features a split profile design between the rotating support and the fixed support, allowing the rotating support to conform to the curved contour of the knee joint and the fixed support to adapt to the shape of the lower leg. Combined with the flexible support of the first and second flexible bands, this avoids localized pressure on the leg from the rigid plate. The drive unit, through the transmission between the motor, rotating rod, and sliding plate, can drive the fixed support to slide along the base plate, thereby adjusting the angle between the rotating and fixed supports to accommodate different knee postures from extension and slight flexion to moderate flexion during rehabilitation, significantly improving patient comfort. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the hospital bed for fixing the lower limbs according to this utility model.

[0027] Figure 2 This is an exploded perspective view of the adjustment component of this utility model.

[0028] Figure 3 This is an exploded perspective view of the height adjustment part of this utility model.

[0029] Figure 4 This is a three-dimensional structural diagram of the telescopic part and fixing component of this utility model.

[0030] Figure 5 This is a three-dimensional structural diagram of the fixing component of this utility model.

[0031] Figure 6 This is a three-dimensional structural diagram of the fixing component of this utility model.

[0032] Figure 7 This is a three-dimensional structural diagram of the support part of this utility model.

[0033] Figure 8 This is a three-dimensional structural diagram of the drive unit of this utility model.

[0034] Wherein, 1 is the bed body, 2 is the adjustment assembly, 201 is the length adjustment part, 201a is the guide rod, 201a1 is the first insertion hole, 201b is the slider, 201b1 is the convex groove, 201b2 is the second insertion hole, 201c is the pin, 202 is the height adjustment part, 202a is the fixing column, 202a1 is the threaded hole, 202a2 is the fixing hole, 202b is the support rod, 202c is the screw, 203 is the telescopic part, 203a is the sleeve, 203a1 is the first locking hole, 203b is the telescopic rod, 203b1 is the second locking hole, 203c is... Hollow cylindrical body, 203d is the pin shaft, 3 is the fixing component, 301 is the base plate, 301a is the through hole, 301b is the annular bracket, 301c is the connecting rod, 301d is the connecting column, 301e is the support frame, 302 is the driving part, 302a is the guide rail, 302b is the motor, 302c is the rotating rod, 302d is the sliding plate, 302d1 is the base, 303 is the support part, 303a is the rotating bracket, 303a1 is the first flexible belt, 303b is the fixed bracket, 303b1 is the second flexible belt, 304 is the cover, and 304a is the through groove. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1 The illustration shows a specific embodiment of a hospital bed for lower limb fixation. The bed mainly includes a bed body 1, an adjustment component 2, and a fixation component 3. By setting the multi-dimensional adjustment component 2, the fixation structure can be flexibly adjusted in the length, height, and width directions of the bed body 1. Combined with the adjustable support part 303 that adapts to the leg contour, the adaptability, stability, and comfort of lower limb fixation are improved, meeting the personalized needs of orthopedic patients for lower limb fixation and rehabilitation, and reducing the risk of complications.

[0037] Reference Figure 1 The basic structure of bed 1 is designed to accommodate the long-term bed rest and lower limb immobilization needs of orthopedic patients, and its overall structure is similar to that of a regular hospital bed. Specifically, the horizontal direction from the patient's head to their feet when lying down is defined as the length direction (X-direction) of bed 1; the horizontal direction perpendicular to the length direction (i.e., the width span direction of bed 1) is defined as the width direction (Y-direction) of bed 1; and the vertical direction perpendicular to the horizontal plane of bed 1 is defined as the height direction (Z-direction) of bed 1.

[0038] The bed frame 1 includes a horizontally arranged bed board with an overall rectangular structure. A mattress, preferably made of medical-grade memory foam or latex, can be detachably installed on the upper part of the bed board. Four casters are fixed at the bottom corners of the bed board, each equipped with a mechanical brake pedal. When the bed frame 1 needs to be moved, releasing the brake pedal allows the bed frame 1 to move in any direction. Once the bed frame 1 reaches the target position, pressing the brake pedal locks the casters in motion. Headboards and footboards are vertically arranged at both ends of the bed board. The inner wall of the headboard has a protective pad to prevent the patient's head from hitting the headboard. Guardrails are installed on both sides of the bed board in the width direction to effectively prevent the patient from accidentally falling out of bed when turning over, and the guardrails also provide a grip for the patient when getting up.

[0039] Reference Figure 1 and Figure 2 The adjustment component 2 is a structure used to achieve multi-dimensional adjustment of the patient's lower limb support. It includes a length adjustment part 201, a height adjustment part 202, and a telescopic part 203 arranged in series, corresponding to the positional adjustment of the bed body 1 in the length direction (X direction), height direction (Z direction), and width direction (Y direction), respectively, to achieve precise alignment between the fixing component 3 and the patient's lower limbs and adapt to the personalized support needs of patients with different heights and body types. The length adjustment part 201 can be symmetrically arranged on both sides of the bed body 1 in the width direction, or it can be arranged only on one side of the bed body 1, and the overall extension direction of the length adjustment part 201 is approximately the same as the length direction of the bed body 1. The height adjustment part 202 is slidably arranged on the length adjustment part 201. Driven by the length adjustment part 201, the height adjustment part 202 can move along the extension direction of the length adjustment part 201, thereby adjusting its position in the length direction of the bed body 1 to match the longitudinal area of ​​the lower limbs that need support for different patients. The telescopic part 203 is fixed to the upper end of the height adjustment part 202 along the width direction of the bed body 1. The height adjustment part 202 drives the telescopic part 203 to move up and down along the height direction of the bed body 1 through its own telescopic or sliding structure, thereby adjusting the support height of the subsequent fixing component 3. At the same time, the telescopic part 203 itself has a telescopic function along the Y direction. The end away from the height adjustment part 202 is the free end. By extending or shortening the telescopic part 203, the free end and the fixing component 3 can be driven to move closer to or further away from the center of the bed body 1 along the width direction of the bed body 1, so as to realize the multi-dimensional position adjustment of the fixing component 3.

[0040] Reference Figure 2The length adjustment unit 201 includes a guide rod 201a and a slider 201b. The guide rod 201a is fixed to one or both sides of the bed body 1 along the length direction of the bed body 1 and is long and narrow. When the adjustment components 2 need to be configured on both sides of the bed body 1, the two guide rods 201a are symmetrically fixed to the side edges of the bed board on both sides of the bed body 1 by bolts or welding, and the axes of the two guide rods 201a are on the same horizontal plane. When only one side needs to be configured, a single guide rod 201a is fixed to the edge of the bed board on the corresponding side. The length of the guide rod 201a needs to cover the area where the patient's lower limbs may need to be supported along the length direction of the bed body 1.

[0041] The slider 201b is slidably mounted on the guide rod 201a. The guide rod 201a has a convex cross-section, and the inner wall of the slider 201b has a convex groove 201b1 that mates with the convex guide rod 201a to prevent the slider 201b from falling off. To achieve positioning and locking of the slider 201b on the guide rod 201a, the upper part of the guide rod 201a has a plurality of first insertion holes 201a1 spaced apart along its length. The upper part of the slider 201b has a second insertion hole 201b2 that mates with the first insertion holes 201a1. The second insertion hole 201b2 and the first insertion hole 201a1 are connected by a pin 201c to fix the position of the slider 201b on the guide rod 201a.

[0042] Reference Figure 3 The height adjustment unit 202 includes a fixed column 202a and a support rod 202b. The fixed column 202a and the support rod 202b slide together to adjust the height along the bed frame 1, thus providing a support height suitable for different patients' needs for the subsequent telescopic unit 203 and the fixing assembly 3. The fixed column 202a has a columnar structure, is located on the outer wall of the slider 201b, and extends horizontally outward. The interior of the fixed column 202a has a through-hole 202a2 in the vertical direction to receive the support rod 202b and guide its sliding.

[0043] The support rod 202b is L-shaped, consisting of a vertical section and a horizontal section. These sections can be integrally formed or formed separately. The outer diameter of the vertical section mates with the fixing hole 202a2 of the fixing column 202a, allowing it to slide axially along the fixing hole 202a2. The overall height of the support rod 202b is adjusted by moving the vertical section up and down. The horizontal section connects to the upper end of the vertical section, and its extension direction is opposite to that of the fixing column 202a, i.e., towards the middle of the bed frame 1, ensuring that the telescopic part 203 and the fixing assembly 3 can cover the support area of ​​the patient's lower limbs.

[0044] The side wall of the fixed column 202a has a threaded hole 202a1 radially formed. The threaded hole 202a1 is perpendicular to the fixed hole 202a2. A screw 202c is threaded into the threaded hole 202a1. One end of the screw 202c is equipped with a knob for manual rotation, and the other end extends into the fixed hole 202a2 of the fixed column 202a, corresponding to the outer wall of the vertical section of the support rod 202b. When the height needs to be adjusted, the screw 202c is rotated clockwise, so that the inner end of the screw 202c moves away from the outer wall of the support rod 202b, releasing the compression and fixation on the support rod 202b. The horizontal section of the support rod 202b can be pushed up and down, causing the vertical section of the support rod 202b to slide along the fixed hole 202a2 until the target height is achieved. Once the height is determined, rotate the screw 202c counterclockwise, causing the inner end of the screw 202c to gradually approach the outer wall of the vertical section of the support rod 202b until it is in close contact with the outer wall of the support rod 202b. The static friction between the screw 202c and the support rod 202b restricts the sliding of the support rod 202b, thus achieving height locking.

[0045] Reference Figure 4 The telescopic part 203 includes a sleeve 203a and a telescopic rod 203b. The sleeve 203a is fixed to the upper end of the support rod 202b along the width direction of the bed body 1. The telescopic rod 203b is slidably inserted into one end of the sleeve 203a, and the free end of the telescopic rod 203b is connected to the lower part of the base plate 301. The sleeve 203a is hollow, and one end of the sleeve 203a is connected to one end of the horizontal section of the support rod 202b by welding or bolting. The telescopic rod 203b has a solid rod-like structure and can slide along the axial direction of the sleeve 203a, thereby changing the overall length of the telescopic part 203. One end of the telescopic rod 203b is inserted into the hollow cavity of the sleeve 203a, and the other end is used to connect to the fixing assembly 3. When the telescopic rod 203b slides along the sleeve 203a, it can simultaneously drive the fixing assembly 3 to move along the width direction of the bed body 1. A first locking hole 203a1 is provided on the side wall of the sleeve 203a, and a plurality of second locking holes 203b1 are provided at certain intervals along the length direction of the side wall of the telescopic rod 203b. The first locking hole 203a1 and the second locking hole 203b1 are connected by a pin 203d to fix the position of the telescopic rod 203b in the sleeve 203a. The radial limiting effect of the pin 203d restricts the relative sliding between the telescopic rod 203b and the sleeve 203a, thereby fixing the overall length of the telescopic part 203.

[0046] Reference Figure 5-8The fixing component 3 is used to support and fix the patient's lower limb. It is connected to the telescopic part 203 and mainly includes a base plate 301, a driving part 302, and a supporting part 303. The base plate 301 is generally rectangular plate structure. A ring bracket 301b is slidably mounted on the base plate 301 along its own length direction. There are two through holes 301a in the base plate 301 along its length direction. The two through holes 301a are parallel and symmetrically distributed on both sides of the width direction of the base plate 301. The length of the through holes 301a is slidably matched with the ring bracket 301b. The two ends of the ring bracket 301b are respectively inserted into the two through holes 301a and can slide along the length direction of the through holes 301a. This drives the subsequently connected supporting part 303 to adjust its initial position along the length direction of the base plate 301 to adapt to the lower leg length of different patients.

[0047] Reference Figure 6-8 The drive unit 302 is located on the upper part of the base plate 301 and is used to drive the support unit 303 to adjust its angle to adapt to the natural bending shape of the patient's knee joint. It mainly includes a guide rail 302a, a motor 302b, a rotating rod 302c, and a sliding plate 302d. The drive unit 302 includes a pair of parallel guide rails 302a, which are fixed to the upper part of the base plate 301 along the length direction of the base plate 301. The distance between the two guide rails 302a matches the width of the sliding plate 302d. The motor 302b and the rotating rod 302c are connected in series between the two guide rails 302a. The motor 302b is fixed to the upper part of the base plate 301 and is driven by an external power supply. The output shaft of the motor 302b is connected to one end of the rotating rod 302c through a coupling. The base plate 301 is also provided with two bearing seats and located between two guide rails 302a. The rotating rod 302c is connected to the two bearing seats respectively, and the rotation support is realized through the bearing seats to ensure that the rotating rod 302c rotates under the drive of the motor 302b.

[0048] The slide plate 302d is slidably mounted on the upper part of the two guide rails 302a. The lower center of the slide plate 302d is provided with a base 302d1 that is adapted to the external thread of the rotating rod 302c. The base 302d1 is threadedly connected to the rotating rod 302c. When the motor 302b starts, its output shaft drives the rotating rod 302c to rotate. The rotating rod 302c converts the rotational motion into its own linear motion along the axial direction through the threaded engagement with the base 302d1 and the support of the bearing seat. The base 302d1 drives the slide plate 302d to slide along the length direction of the guide rail 302a.

[0049] Reference Figure 7 and Figure 8The support portion 303 adapts to the contours of the knee joint and lower leg to provide stable support. It mainly includes a rotating bracket 303a and a fixed bracket 303b. The rotating bracket 303a adopts a pair of symmetrically arranged arc-shaped rod structures, roughly L-shaped, whose inner contours adapt to the arc-shaped contours of the back of the human knee joint, and is used to support the patient's knee joint. The fixed bracket 303b adopts a pair of symmetrically arranged straight rod structures, whose inner contours adapt to the arc-shaped contours of the human lower leg, and is used to support the patient's lower leg.

[0050] One end of the rotating bracket 303a is rotatably connected to one end of the annular bracket 301b via a connecting post 301d. The axis of the connecting post 301d is parallel to the width direction of the base plate 301. One end of the annular bracket 301b is fixedly connected to the middle of the connecting post 301d. One end of the rotating bracket 303a is connected to a shaft hole formed on the connecting post 301d, allowing the rotating bracket 303a to rotate around the connecting post 301d. The other end of the rotating bracket 303a is rotatably connected to one end of the fixed bracket 303b via a hinge. The other end of the fixed bracket 303b is fixedly connected to the sliding plate 302d. When the sliding plate 302d slides along the guide rail 302a, it drives one end of the fixed bracket 303b to move. The fixed bracket 303b then pulls the rotating bracket 303a to rotate around the connecting post 301d, thereby adjusting the angle between the rotating bracket 303a and the fixed bracket 303b to accommodate different knee postures from extension to slight flexion.

[0051] The rotating bracket 303a has a first flexible band 303a1 on its upper part to support the knee joint within it, and the fixed bracket 303b has a corresponding second flexible band 303b1 on its upper part to support the lower leg within it. Furthermore, the outer walls of the rotating bracket 303a and the fixed bracket 303b are equipped with straps or Velcro for further reinforcement, preventing limb slippage and secondary injury.

[0052] Reference Figure 5The base plate 301 of the fixing component 3 is detachably connected to the telescopic rod 203b of the telescopic part 203 to enable the fixing component 3 to be disassembled and replaced. Specifically, a connecting rod 301c is provided at the lower part of the base plate 301, and a hollow cylinder 203c is provided at the free end of the telescopic rod 203b. The hollow cylinder 203c is detachably connected to the connecting rod 301c. The connecting rod 301c is vertically connected to the lower center of the base plate 301 to keep the base plate 301 horizontal. The hollow cylinder 203c is fixedly set at the free end of the telescopic rod 203b and has a tubular structure that runs through both ends. It is used to insert the connecting rod 301c, and the axis of the hollow cylinder 203c is perpendicular to the axis of the telescopic rod 203b. The inner diameter of the hollow cylinder 203c is approximately the same as the outer diameter of the connecting rod 301c to ensure a stable fit after the connecting rod 301c is inserted.

[0053] Among them, a support frame 301e is provided on the upper part of the base plate 301 away from the support part 303. The upper end of the support frame 301e is provided with an arc-shaped support groove. The outline of the arc-shaped support groove is adapted to the bottom outline of the human foot and is used to support the patient's foot.

[0054] The base plate 301 is also fixed with a cover 304, which covers the outside of the drive unit 302. The upper part of the cover 304 is provided with a long strip-shaped through groove 304a corresponding to the position of the fixed bracket 303b. The length of the through groove 304a is adapted to the sliding stroke of the slide plate 302d. One end of the fixed bracket 303b extends through the through groove 304a to the outside of the cover 304 and connects with the rotating bracket 303a. This does not affect the movement and rotation of the fixed bracket 303b, and can achieve comprehensive protection for the drive unit 302, thus extending the service life of the drive unit 302.

[0055] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. The embodiments described in this disclosure are intended as non-limiting examples, and other embodiments may take various and alternative forms. Furthermore, the drawings are not necessarily to scale and may present simplified expressions of various features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes. Details associated with such features will be determined in part by the intended application and usage environment of the described embodiments.

[0056] The detailed description and accompanying drawings are supporting and descriptive of this teaching, but the scope of this teaching is defined only by the claims. While the best mode and some other embodiments for carrying out this teaching have been described in detail, various alternative designs and embodiments exist for practicing the teaching as defined in the appended claims. Furthermore, this disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. A hospital bed for immobilizing the lower limbs, characterized in that, include: Bed frame; An adjustment assembly includes a length adjustment section, a height adjustment section, and a telescopic section arranged in series. The length adjustment section is located on one or both sides of the bed and extends along the length direction of the bed. The height adjustment section is slidably mounted on the length adjustment section and is used to drive the height adjustment section to adjust its position along the length direction of the bed. The telescopic section is located at the upper end of the height adjustment section along the width direction of the bed and is used to drive the telescopic section to adjust its position along the height direction of the bed. The telescopic section is also used to drive its free end to adjust its position along the width direction of the bed. A fixing assembly is located at the free end of the telescopic section, wherein the fixing assembly includes: A base plate, the lower part of which is connected to the free end of the telescopic part, and an annular bracket is slidably provided on the base plate along its length direction; A drive unit is disposed on the upper part of the base plate; The support portion includes a rotating bracket and a fixed bracket. The rotating bracket is adapted to the contour of the knee joint to support the knee joint, and the fixed bracket is adapted to the contour of the lower leg to support the lower leg. One end of the rotating bracket is rotatably connected to one end of the annular bracket, and the other end is rotatably connected to one end of the fixed bracket. The other end of the fixed bracket is connected to the upper part of the driving portion. The driving portion is used to drive the fixed bracket to move along the length direction of the base plate to adjust the angle between the rotating bracket and the fixed bracket.

2. The hospital bed according to claim 1, characterized in that, The length adjustment part includes a guide rod and a slider. The guide rod is fixed to both sides of the bed along the length direction of the bed, and the slider is slidably disposed on the guide rod. The height adjustment unit includes a fixed column and a support rod. The fixed column is disposed on the outer side wall of the slider, and the support rod is slidably inserted through the fixed column along the height direction of the bed, with the upper end of the support rod extending horizontally toward the middle of the bed. The telescopic part includes a sleeve and a telescopic rod. The sleeve is fixed to the upper end of the support rod along the width direction of the bed. The telescopic rod is slidably inserted into one end of the sleeve, and the free end of the telescopic rod is connected to the lower part of the base plate.

3. The hospital bed according to claim 2, characterized in that, A connecting rod is provided at the lower part of the base plate, and a hollow cylinder is provided at the free end of the telescopic rod. The hollow cylinder is detachably connected to the connecting rod.

4. The hospital bed according to claim 2, characterized in that, The guide rod has a convex cross-section, and the inner wall of the slider has a convex groove that mates with the convex guide rod.

5. The hospital bed according to claim 2, characterized in that, The upper part of the guide rod has a plurality of first insertion holes spaced apart along its length, and the upper part of the slider has a second insertion hole that mates with the first insertion holes. The second insertion hole and the first insertion hole are connected by a pin to fix the position of the slider on the guide rod.

6. The hospital bed according to claim 2, characterized in that, The side wall of the fixed column is threaded with a screw rod, one end of which abuts against the outer wall of the support rod to lock the support rod at the height of the fixed column.

7. The hospital bed according to claim 1, characterized in that, The drive unit includes a pair of guide rails fixed to the base plate. A motor and a rotating rod are connected in series between the two guide rails. A sliding plate is slidably mounted on the upper part of the two guide rails, and the lower part of the sliding plate is connected to the rotating rod in a transmission manner. The other end of the fixed bracket is rotatably connected to the upper part of the sliding plate.

8. The hospital bed according to claim 1, characterized in that, The upper part of the rotating bracket is provided with a first flexible band for supporting the knee joint; the upper part of the fixed bracket is provided with a second flexible band for supporting the lower leg.

9. The hospital bed according to claim 1, characterized in that, One end of the rotating bracket is rotatably connected to one end of the annular bracket via a connecting column, and the axis of the connecting column is parallel to the width direction of the base plate.

10. The hospital bed according to claim 1, characterized in that, A support frame for supporting the feet is provided on the upper part of the base plate away from the supporting part.

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