A bed that can be used for passive leg raising test

Abstract

The utility model discloses a bed that can be used for a passive leg raising test, comprising a main bed frame, a bed board is laid on the main bed frame, the bed board comprises a first bed board, a second bed board, a third bed board and a fourth bed board arranged in sequence, the first bed board is hinged to the main bed frame, the second bed board is fixed to the main bed frame, the side of the second bed board is hinged to the third bed board, and the side of the third bed board is hinged to the fourth bed board; the utility model also comprises a first lifting mechanism, the first driving device, the second driving device and the third driving device of the first lifting mechanism are all hinged to the second bed board, the output shaft of the first driving device is hinged to the first bed board, the output shaft of the second driving device is hinged to the third bed board, and the output shaft of the third driving device is hinged to the fourth bed board; the fourth driving device of the second lifting mechanism is hinged to the second bed board, the output shaft of the fourth driving device is connected to the bottom bracket through a crankshaft connecting rod mechanism, and the bottom bracket supports the main bed frame. The device can realize the lifting and lowering action of the patient's upper body and legs, and meet the requirements of the PLR ​​test.

Description

Technical Field

[0001] The utility model relates to the technical field of improved design of medical beds, in particular to a bed that can be used for a passive leg-lifting test. Background Art

[0002] The passive leg raising test (PLR) is a clinical method used to increase the heart and lung fluid of patients with circulatory failure. This method raises the patient's thigh or calf so that the body fluid on the lower limb trunk flows back to the heart and lungs under the action of gravity, thereby saving the patient's life. The key points of the standard operation of the passive leg raising test are that the trunk is in the supine position and the lower limbs are passively raised 45° for 3 minutes. However, in existing studies, there are many differences in the basic initial position. Some medical workers advocate the initial semi-recumbent position (head maintained at 30 or 45°), while others support the initial upper body supine position, that is, 0°.

[0003] When conducting a PLR test, the patient's legs can be lifted by medical staff or by auxiliary mechanisms, such as the lifting mechanism on the bed. The former usually requires the cooperation of multiple medical staff to achieve, which not only has the risk of operational errors, but also wastes manpower and material resources, and is not conducive to the efficient use of medical resources; the latter has high requirements for the existing bed structure design, and conventional beds cannot meet the requirements.

[0004] In the prior art, the patent with announcement number CN217186888U discloses a bed board leg linkage mechanism, including an upper bracket, a hip assembly, a thigh assembly and a calf assembly, and also includes a fixed-angle rotation mechanism, a thigh drive device and a calf drive device; the hip assembly is installed on the upper bracket, the thigh assembly is rotationally connected to the hip assembly, the calf assembly is connected to the thigh assembly, and the fixed-angle rotation mechanism is arranged between the calf assembly and the thigh assembly; the thigh drive device is connected to the upper bracket and the thigh assembly, and the calf drive device is connected to the upper bracket and the calf assembly. The utility model enables patients to perform leg linkage, leg bending and other actions, meets the requirements of the PLR ​​test, is conducive to saving manpower, and improves the efficiency of medical resource utilization.

[0005] In the above technical solution, when the calf board and the thigh board are kept relatively parallel, the telescopic rod of the calf driving device is extended outward, and due to the limitation of the fixed angle rotating mechanism, the calf frame will drive the thigh frame to rotate around the seat frame together, so as to achieve the purpose of synchronous rotation of the patient's calf and thigh, that is, the purpose of leg linkage; under the condition that the calf board and the thigh board are kept relatively parallel, the telescopic rod of the telescopic driving member is extended outward, and the roller can push the thigh frame to rotate relative to the seat frame. At this time, the calf frame is forced to rotate relative to the thigh frame under the action of gravity, so that the calf frame and the thigh frame can form a certain angle, achieving the purpose of making the patient bend his legs. Although the action requirements of leg linkage and bending legs are met, it is impossible to lift the upper body, that is, it is impossible to achieve a semi-recumbent position.

[0006] In order to solve one of the above problems, the present application provides a bed that can be used for a passive leg raising test. Utility Model Content

[0007] The utility model aims to solve the problems existing in the prior art and proposes a bed that can be used for a passive leg raising test, which can realize the lifting and lowering movements of the patient's upper body and legs and meet the requirements of the PLR ​​test.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bed that can be used for a passive leg raising test, comprising a main bed frame, a bed board is laid on the main bed frame, a headboard and a footboard and a plurality of fence boards are installed on the side of the main bed frame, and the main bed frame is supported by a bottom bracket, and the bed boards include a first bed board, a second bed board, a third bed board and a fourth bed board that are arranged in sequence, the first bed board and the main bed frame are hingedly connected, the second bed board is fixed on the main bed frame, the side of the second bed board is hingedly connected to the third bed board, and the side of the third bed board is hingedly connected to the fourth bed board;

[0009] It also includes a first lifting mechanism, the first lifting mechanism includes a first driving device, a second driving device and a third driving device, the first driving device, the second driving device and the third driving device are all hinged on the second bed board, the output shaft of the first driving device is hinged on the first bed board, the output shaft of the second driving device is hinged on the third bed board, and the output shaft of the third driving device is hinged on the fourth bed board;

[0010] The second lifting mechanism comprises a fourth driving device, which is hingedly mounted on the second bed board, and the output shaft of the fourth driving device is connected to the bottom bracket through a crankshaft connecting rod mechanism.

[0011] Furthermore, the first bed board as described above includes a first board and a first bed frame, the first board is fixedly mounted on the first bed frame, the second bed board includes a second board and a second bed frame, the second board is fixedly mounted on the second bed frame, the third bed board includes a third board and a third bed frame, the third board is fixedly mounted on the third bed frame, and the fourth bed board includes a fourth board and a fourth bed frame, the fourth board is fixedly mounted on the fourth bed frame.

[0012] Furthermore, the first bed frame and the main bed frame as described above are hingedly connected via a first connecting rod, the second bed frame is fixed on the main bed frame, the side of the second bed frame is hingedly connected to the third bed frame, and the side of the third bed frame is hingedly connected to the fourth bed frame.

[0013] Furthermore, the two first connecting rods are respectively arranged on both sides of the first bed frame, and the two ends of the first connecting rod are rotatably connected to the first bed frame and the main bed frame through a rotating shaft. The second bed frame and the third bed frame are connected through a hole opened on the extension sheet and a pivot, and the third bed frame and the fourth bed frame are connected through a hole opened on the epitaxial sheet and a pin.

[0014] Furthermore, the first lifting mechanism as described above also includes a gas spring, and the cylinder and piston shaft of the gas spring are hingedly mounted on the first bed board and the second bed board respectively.

[0015] Furthermore, the first drive device, the second drive device and the third drive device as described above are all composed of a telescopic drive member and an output shaft. The telescopic drive member is rotatably mounted on the second bed board through a hinge seat, and the output shaft telescopes along the axial direction of the cylinder of the telescopic drive member.

[0016] Furthermore, the telescopic driving member of the fourth driving device as described above drives the output shaft to perform linear telescopic motion. The telescopic shaft is hinged to the crankshaft, and both ends of the crankshaft are rotatably connected to the main bed frame. Two second connecting rods are fixed on the crankshaft, and one end of the second connecting rod is rotatably connected to the support rod, which is connected to the bottom bracket.

[0017] Furthermore, the output shafts of the two fourth drive devices are installed in opposite directions.

[0018] Furthermore, the fence board as described above includes a surrounding board and a fixing seat, the surrounding board is rotatably connected to the fixing seat, and the fixing seat is connected to the bed board.

[0019] Furthermore, the headboard and footboard as described above are respectively inserted into the front and rear mounting holes of the main bed frame, and the side of the enclosure is provided with a buckle cover, and the buckle cover is connected to the rotating component through a spring, and a rotation damper is also provided on the fixed seat. The two fence boards are respectively installed on the two sides of the first bed board, and the two fence boards are respectively connected to the two sides of the fourth bed board; handles are also installed on both sides of the first bed board, and the fourth bed board is also provided with an extension frame that can extend horizontally outward.

[0020] Compared with the prior art, the beneficial effects of the utility model are: the first bed board can be raised and lowered so that the patient's upper body can complete a semi-recumbent position, the fourth bed board can be raised and lowered independently to complete the calf lifting action, and can also be lifted and lowered in conjunction with the third bed board to achieve the thigh and calf lifting action at the same time, thus meeting the requirements of the PLR ​​test, especially the initial basic body position can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 It is an explosion diagram of the utility model;

[0023] Figure 3 for Figure 2 The schematic diagram after omitting the fence board and the headboard and footboard;

[0024] Figure 4 for Figure 2 Schematic diagram of the second lifting mechanism;

[0025] Figure 5 for Figure 2 Schematic diagram of the first lifting mechanism.

[0026] In the figure: 1. fence plate; 11. rotary damper; 12. fixing seat; 13. buckle cover; 2. headboard; 3. footboard; 4. bottom bracket; 51. first bed board; 511. first bed frame; 512. first connecting rod; 513. gas spring; 514. first driving device; 52. second bed board; 521. second bed frame; 53. third bed board; 531. third bed frame; 532. second driving device; 54. fourth bed board; 541. fourth bed frame; 542. third driving device; 543. extension frame; 6. main bed frame; 71. support rod; 72. second connecting rod; 73. crankshaft; 74. fourth driving device. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a central element. When an element is considered to be "installed on" another element, it can be directly installed on the other element or there can be a central element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two elements.

[0029] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1

[0032] Reference Figure 1-5 As shown, a bed that can be used for a passive leg-lifting test of the utility model comprises a main bed frame 6, on which a bed board is laid, a headboard 2 and a footboard 3 as well as a plurality of fence boards 1 are installed on the side of the main bed frame 6, and the main bed frame 6 is supported by a bottom bracket 4, wherein the bed board comprises a first bed board 51, a second bed board 52, a third bed board 53 and a fourth bed board 54 arranged in sequence, corresponding to the patient's upper body, waist and hips, thighs and calves respectively, the first bed board 51 and the main bed frame 6 are hingedly connected so that the first bed board 51 can rotate around the hinged portion, the second bed board 52 is fixed on the main bed frame 6, the side of the second bed board 52 is hingedly connected to the third bed board 53 so that the third bed board 53 can rotate around the hinged portion of the two, and the side of the third bed board 53 is hingedly connected to the fourth bed board 54 so that the fourth bed board 54 can rotate around the hinged portion of the two;

[0033] The first lifting mechanism includes a first driving device 514, a second driving device 532 and a third driving device 542. The first driving device 514, the second driving device 532 and the third driving device 542 are all hinged on the second bed board 52. The output shaft of the first driving device 514 is hinged to the first bed board 51, which is used to push the first bed board 51 to increase the height or reset the first bed board 51 around the hinged part with the main bed frame 6. The output shaft of the second driving device 532 is hinged to the third bed board 53, which is used to push the third bed board 5 3 is raised or reset around the hinged portion with the second bed board 52, the output shaft of the third driving device 542 is hinged to the fourth bed board 54, and is used to push the fourth bed board 54 to raise the height or reset and lower around the hinged portion with the third bed board 53; the second lifting mechanism, the second lifting mechanism includes a fourth driving device 74, the fourth driving device 74 is hingedly installed on the second bed board 52, the output shaft of the fourth driving device 74 is connected to the bottom bracket 4 through the crankshaft connecting rod mechanism, and is used to adjust the height of the main bed frame 6, that is, adjust the height of the bed board and the ground.

[0034] Furthermore, the headboard 2 and footboard 3 are respectively inserted into the front and rear mounting holes of the main bed frame 6, and are fastened with bolts or bolts, so that the headboard 2 and footboard 3 are easy to disassemble and assemble. The fence board 1 includes a panel and a fixing seat 12. The panel is rotatably connected to the fixing seat 12, which is convenient for leveling and verticalizing the panel. The fixing seat 12 is connected to the bed board. The side of the panel is provided with a buckle cover 13, and the buckle cover 13 is connected to the rotating part through a spring. Specifically, the rotating part is provided with a stopper, which is connected to the spring. The hand can drive the stopper to deviate from the rotating part through the buckle operation of the buckle cover 13, so that the panel can be rotated through the rotating part. The fixing seat 12 is also provided with a rotation damper 11 for buffering and limiting to prevent the panel from rotating too fast and limit its rotation angle. The two fence boards 1 are respectively installed on both sides of the first bed board 51, and the two fence boards 1 are respectively connected to both sides of the fourth bed board 54; handles are also installed on both sides of the first bed board 51 for manually assisting in lifting the first bed board 51, and the fourth bed board 54 is also provided with an extension frame 543 that can extend horizontally outward to expand the length of the fourth bed frame 541, that is, to adapt the bed board for tall patients.

[0035] Embodiment 2

[0036] Reference Figure 1-5As shown, based on the technical solution of Example 1, a bed that can be used for a passive leg raising test, with regard to the specific structural design of the bed board, the first bed board 51 includes a first plate and a first bed frame 511, the first plate is fixedly mounted on the first bed frame 511, the second bed board 52 includes a second plate and a second bed frame 521, the second plate is fixedly mounted on the second bed frame 521, the third bed board 53 includes a third plate and a third bed frame 531, the third plate is fixedly mounted on the third bed frame 531, the fourth bed board 54 includes a fourth plate and a fourth bed frame 541, the fourth plate is fixedly mounted on the fourth bed frame 541.

[0037] Further, the first bed frame 511 and the main bed frame 6 are hingedly connected by the first connecting rod 512, the second bed frame 521 is fixed on the main bed frame 6, the side of the second bed frame 521 is hingedly connected to the third bed frame 531, and the side of the third bed frame 531 is hingedly connected to the fourth bed frame 541. Specifically, the two first connecting rods 512 are respectively arranged on both sides of the first bed frame 511, and the two ends of the first connecting rod 512 are rotatably connected to the first bed frame 511 and the main bed frame 6 through a rotating shaft, the first connecting rod 512 is arranged close to the second bed frame 521, the second bed frame 521 and the third bed frame 531 are connected by a pivot through a hole on the extension sheet, the third bed frame 531 and the fourth bed frame 541 are connected by a pin through a hole on the epitaxial sheet, and a certain distance is set between the second bed frame 521 and the third bed frame 531 and between the third bed frame 531 and the fourth bed frame 541 for the installation of hinged parts.

[0038] Embodiment 3

[0039] Reference Figure 1-5 As shown, based on the technical solution of the first embodiment, a bed that can be used for a passive leg lifting test, for the structural design of the first lifting mechanism, the first lifting mechanism also includes a gas spring 513, the cylinder and piston shaft of the gas spring 513 are respectively hingedly mounted on the first bed board 51 and the second bed board 52, which is used to play a buffering role when the first bed board 51 is lifted and lowered, so that the patient's upper body lifting action is smooth. Further, the first drive device 514, the second drive device 532 and the third drive device 542 are all composed of a telescopic drive member and an output shaft, the telescopic drive member is rotatably mounted on the second bed board 52 through a hinge seat, and the output shaft moves along the axial direction of the cylinder of the telescopic drive member. Since the second bed board 52 and the third bed board 53 are hinged and driven by two separate telescopic drive members, the third bed board 53 can be lifted and lowered alone, or it can be lifted and lowered synchronously with the second bed board 52, which can complete the calf lifting action, and can also achieve the synchronous lifting action of the thigh and calf.

[0040] As for the structural design of the second lifting mechanism, the telescopic drive member of the fourth drive device 74 drives the output shaft to telescopically move in a straight line. The output shaft is hinged to the crankshaft 73. Both ends of the crankshaft 73 are rotatably connected to the main bed frame 6. Two second connecting rods 72 are fixed to the crankshaft 73. One end of the second connecting rod 72 is rotatably connected to the support rod 71. The support rod 71 is connected to the bottom bracket 4. Furthermore, the installation directions of the output shafts of the two fourth drive devices 74 are opposite. The two telescopic drive members provide opposite forces to push the crankshaft 73 to rotate within a certain angle range around the hinge with the main bed frame 6, indirectly pushing the second connecting rod 72 to shake, so that the height between the bottom bracket 4 and the main bed frame 6 is adjusted.

[0041] The telescopic drive part uses an electric push rod, also known as a linear drive, which is a new type of linear actuator mainly composed of a motor, a push rod and a control device. The electric push rod is an electric drive device that converts the rotational motion of the motor into the linear reciprocating motion of the push rod. After the motor is reduced by gears or worm gears, it drives a pair of screw nuts to work, thereby converting the rotational motion of the motor into linear motion, and the push rod action is completed by the forward and reverse rotation of the motor. Gas spring 513 (gas spring) is an industrial accessory that can support, buffer, brake, height adjustment and angle adjustment.

[0042] In the device of the utility model, the assembly and matching relationship of the various components involved, the damper, the gas spring 513, the electric push rod and its supporting control software, etc. are existing technologies or materials, and the relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0043] The electrical components appearing in the text are all electrically connected to the external main controller and 220V mains or industrial electricity, and the main controller can be a conventional known device such as a computer that plays a control role. The above is only a preferred specific embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any technician familiar with the technical field within the technical scope disclosed in the utility model, according to the technical scheme of the utility model and its utility model concept, shall be equivalently replaced or changed, and shall be covered within the protection scope of the utility model.

Claims

1. A bed that can be used for a passive leg raising test, comprising a main bed frame (6), a bed board is laid on the main bed frame (6), a headboard (2) and a footboard (3) and a plurality of fence boards (1) are installed on the side of the main bed frame (6), and the main bed frame (6) is supported by a bottom bracket (4), characterized in that: The bed board comprises a first bed board (51), a second bed board (52), a third bed board (53) and a fourth bed board (54) which are arranged in sequence, the first bed board (51) and the main bed frame (6) are hingedly connected, the second bed board (52) is fixed on the main bed frame (6), the side of the second bed board (52) is hingedly connected to the third bed board (53), and the side of the third bed board (53) is hingedly connected to the fourth bed board (54); The bed also includes a first lifting mechanism, the first lifting mechanism including a first driving device (514), a second driving device (532) and a third driving device (542), the first driving device (514), the second driving device (532) and the third driving device (542) are all hingedly arranged on the second bed board (52), the output shaft of the first driving device (514) is hingedly connected to the first bed board (51), the output shaft of the second driving device (532) is hingedly connected to the third bed board (53), and the output shaft of the third driving device (542) is hingedly connected to the fourth bed board (54); The second lifting mechanism comprises a fourth driving device (74), the fourth driving device (74) is hingedly mounted on the second bed board (52), and the output shaft of the fourth driving device (74) is connected to the bottom bracket (4) through a crankshaft connecting rod mechanism.

2. A bed that can be used for a passive leg raising test according to claim 1, characterized in that: The first bed board (51) comprises a first board and a first bed frame (511), the first board being fixedly mounted on the first bed frame (511); the second bed board (52) comprises a second board and a second bed frame (521), the second board being fixedly mounted on the second bed frame (521); the third bed board (53) comprises a third board and a third bed frame (531), the third board being fixedly mounted on the third bed frame (531); the fourth bed board (54) comprises a fourth board and a fourth bed frame (541), the fourth board being fixedly mounted on the fourth bed frame (541).

3. A bed that can be used for a passive leg raising test according to claim 2, characterized in that: The first bed frame (511) and the main bed frame (6) are hingedly connected via a first connecting rod (512); the second bed frame (521) is fixed on the main bed frame (6); the side of the second bed frame (521) is hingedly connected to the third bed frame (531); and the side of the third bed frame (531) is hingedly connected to the fourth bed frame (541).

4. A bed that can be used for a passive leg raising test according to claim 3, characterized in that: The two first connecting rods (512) are respectively arranged on both sides of the first bed frame (511), and the two ends of the first connecting rod (512) are rotatably connected to the first bed frame (511) and the main bed frame (6) through a rotating shaft. The second bed frame (521) and the third bed frame (531) are connected by a pivot through a hole opened on the extension sheet, and the third bed frame (531) and the fourth bed frame (541) are connected by a pin through a hole opened on the epitaxial sheet.

5. A bed that can be used for a passive leg raising test according to claim 1, characterized in that: The first lifting mechanism also includes a gas spring (513), the cylinder and piston shaft of the gas spring (513) are hingedly mounted on the first bed board (51) and the second bed board (52) respectively.

6. A bed that can be used for a passive leg raising test according to claim 5, characterized in that: The first driving device (514), the second driving device (532) and the third driving device (542) are all composed of a telescopic driving member and an output shaft. The telescopic driving member is rotatably mounted on the second bed board (52) via a hinge seat, and the output shaft telescopes along the axial direction of the cylinder of the telescopic driving member.

7. A bed that can be used for a passive leg raising test according to claim 1, characterized in that: The telescopic driving member of the fourth driving device (74) drives the output shaft to perform linear telescopic movement. The output shaft is hinged to a crankshaft (73). Both ends of the crankshaft (73) are rotatably connected to the main bed frame (6). Two second connecting rods (72) are fixed to the crankshaft (73). One end of the second connecting rod (72) is rotatably connected to a support rod (71). The support rod (71) is connected to the bottom bracket (4).

8. A bed that can be used for a passive leg raising test according to claim 7, characterized in that: The output shafts of the two fourth drive devices (74) are installed in opposite directions.

9. A bed that can be used for a passive leg raising test according to any one of claims 1 to 8, characterized in that: The fence board (1) comprises a surrounding board and a fixing seat (12), wherein the surrounding board is rotatably connected to the fixing seat (12), and the fixing seat (12) is connected to the bed board.

10. A bed that can be used for a passive leg raising test according to claim 9, characterized in that: The headboard (2) and footboard (3) are respectively inserted into the front and rear mounting holes of the main bed frame (6); the side of the enclosure is provided with a buckle cover (13); the buckle cover (13) is connected to a rotating component through a spring; a rotation damper (11) is also provided on the fixed seat (12); the two fence boards (1) are respectively installed on the two sides of the first bed board (51); the two fence boards (1) are respectively connected to the two sides of the fourth bed board (54); handles are also respectively installed on the two sides of the first bed board (51); and the fourth bed board (54) is also provided with an extension frame (543) that can extend horizontally outward.

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