A weight measuring device suitable for wheelchair patients

Abstract

This utility model belongs to the field of medical device technology, specifically relating to a weight measuring device suitable for wheelchair patients. This weight measuring device for wheelchair patients includes a base, a weighing mechanism, a support mechanism, and a control mechanism. The weighing mechanism includes a weighing plate, a weighing sensor disposed between the weighing plate and the base, and a lifting assembly disposed on the weighing plate. The lifting assembly includes a fixed frame disposed on the weighing plate, a rotatable lifting frame, and a rotating component connected to the lifting frame on the fixed frame. When the lifting frame rotates to a certain position, the patient's entire body is supported on the lifting frame in a suspended state, and the centers of gravity of the patient, the lifting frame, and the fixed frame are in a relatively balanced state without shifting. The support mechanism and the weighing mechanism are not in contact. The weighing sensor feeds back the obtained weight data to the control mechanism. The control mechanism, according to a preset program, subtracts the fixed weight of the lifting assembly from the obtained weight data to obtain the patient's weight.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a weight measuring device suitable for wheelchair patients. Background Technology

[0002] When patients are admitted to the hospital, their height and weight are routinely checked. This allows the receiving nurses to understand their health condition and prepare appropriate hospital gowns. It is also crucial for doctors to provide treatment based on weight, height, and the parameters calculated from them. While electronic weighing scales are now available in every department, they are only suitable for patients who can walk independently. Many patients are admitted to their wards in wheelchairs and cannot stand on the scale independently, making it impossible to accurately measure their weight upon admission, which can have a negative impact on their experience.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN216717580U discloses a wheelchair weighing scale, comprising a first weighing base, a telescopic rod, a second weighing base, a processor, a display, a zeroing button, a power switch, a first foot pad, a first signal line, a second foot pad, a second signal line, a third signal line, a first weighing sensor, a second weighing sensor, and a receiving slot. The processor, display, zeroing button, power switch, first foot pad, first signal line, first weighing sensor, and receiving slot are installed on the first weighing base. When the wheelchair weighing scale is in the extended state, the patient can sit on it in a wheelchair to measure their weight. Its structure is simple, and weight measurement is convenient, making it particularly suitable for patients with limited mobility who use wheelchairs for extended periods. When the wheelchair weighing scale is in the folded state, its size is smaller, making it easy to store.

[0004] The aforementioned patent, by setting up a first weighing base and a second weighing base connected by a telescopic rod, makes the width of the wheelchair weighing scale compatible with the width of the wheelchair, facilitating weighing for wheelchair patients while seated in their wheelchairs. However, this patent still has some problems: 1. Existing wheelchair weighing still weighs the patient and the wheelchair together. Due to the different specifications of wheelchairs, medical staff need to measure the weight of the empty wheelchair again and subtract the two to obtain the patient's weight, which is cumbersome and reduces weighing efficiency; 2. During the weighing process, the patient and wheelchair need to be moved onto the weighing scale, increasing the difficulty of movement and the workload of medical staff. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a weight measuring device suitable for wheelchair patients that can weigh patients independently.

[0006] The present invention adopts the following technical solution:

[0007] A weight measuring device suitable for wheelchair users includes a base, a weighing mechanism, a support mechanism, and a control mechanism. The base includes a receiving cavity formed on the base for a wheelchair to enter. The weighing mechanism is disposed on the base opposite the receiving cavity and includes a weighing plate, a weighing sensor disposed between the weighing plate and the base, and a lifting assembly disposed on the weighing plate. The lifting assembly includes a fixed frame disposed on the weighing plate, a lifting frame rotatably disposed on the fixed frame, and a rotating component disposed on the fixed frame and connected to and driving the lifting frame to rotate. The support mechanism is disposed between the base and the lifting assembly to prevent the center of gravity of the weighing mechanism from shifting. The control mechanism is disposed on the base and connects to and controls the operation of the weighing sensor, the rotating component, and the support mechanism.

[0008] Furthermore, the fixing frame includes two fixed vertical rods on one side opposite to the weighing plate, a fixed horizontal rod connected between the tops of the two fixed vertical rods, and a positioning plate disposed between the two fixed vertical rods and below the fixed horizontal rod.

[0009] Furthermore, the support frame includes a U-shaped rod with its opening on the same side as the opening of the receiving cavity, a support pad on the surface of the U-shaped rod opposite to the patient's upper body, two auxiliary rods on the outside of the U-shaped rod respectively extending upward at an angle to the sides of the support pad so that the patient can hold them with both hands, and a rotating part on the surface of the U-shaped rod opposite to the fixed frame and rotatably connected to the fixed crossbar. Two arm support pads are provided at both ends of the U-shaped rod, and the two arm support pads can support the patient under the armpits respectively.

[0010] Furthermore, the rotating part includes two first rods extending horizontally outward from the opposite surface of the U-shaped rod and the fixed frame, a rotating sleeve connected between the ends of the two first rods and sleeved on the outer periphery of the fixed crossbar, and a second rod inclinedly disposed between the rotating sleeve and the support pad, the second rod being located between the two first rods.

[0011] Furthermore, the rotating component includes a rotating electric push rod rotatably mounted on the positioning plate and connected to the lifting frame, one end of which is connected to the second rod body.

[0012] Furthermore, the base includes a base plate, two movable handles spaced apart on one side of the top of the base plate opposite to the weighing mechanism, a connecting plate connected between the two movable handles opposite to the positioning plate, and four universal wheels with brakes arranged around the bottom of the base plate. The receiving cavity extends inward from one side of the base plate.

[0013] Furthermore, the support mechanism includes a hook portion disposed on the connecting plate, a hook groove disposed on the positioning plate that cooperates with the hook portion, and a pressure sensor disposed on the opposite surface of the hook portion and the hook groove. The pressure sensor is connected to the control mechanism. When the patient is lifted by the lifting frame for weighing, the pressure sensor does not contact the hook groove. At this time, the control mechanism controls the weighing sensor to weigh.

[0014] Furthermore, the hook portion includes a connecting section extending horizontally outward from the opposite surface of the connecting plate and the positioning plate, a contact section extending vertically downward from the end of the connecting section to form a contact section opposite to the inner wall of the hook groove, and an inclined support section inclinedly disposed between the connecting section and the connecting plate, wherein the pressure sensor is disposed on the contact section.

[0015] As can be seen from the above description of this utility model, compared with the prior art, the beneficial effects of this utility model are: This application utilizes the cooperation between a base, a weighing mechanism disposed on the base opposite to the receiving cavity, a support mechanism disposed between the base and the lifting assembly, and a control mechanism disposed on the base, and defines the specific structure of the weighing mechanism. In use, the patient and wheelchair are first moved and fixed in the receiving cavity. At this time, the lifting frame is located in front of the patient. Then, the patient's upper body is placed in a prone position and supported on the lifting frame. The control mechanism then controls the rotating component to work, driving the lifting frame to rotate upwards, slowly lifting the patient lying prone on the lifting frame and removing them from the wheelchair. During the upward rotation of the lifting frame, the patient is lifted... The center of gravity of the frame shifts towards the patient's center of gravity. At this point, the support mechanism and the lifting frame are in a resisting state. When the lifting frame rotates to a certain position, the patient's entire body is supported on the lifting frame and is suspended in the air. The centers of gravity of the patient, the lifting frame, and the fixed frame are in a relatively balanced state at this moment without any shift. At this time, the support mechanism and the weighing mechanism are not in contact. The weighing sensor feeds back the obtained weight data to the control mechanism. The control mechanism subtracts the fixed weight of the lifting component from the obtained weight data according to the preset program to obtain the patient's weight. This allows medical staff to weigh the patient independently without moving the wheelchair or weighing the wheelchair a second time, reducing the workload of medical staff and improving the weighing efficiency of wheelchair patients. Attached Figure Description

[0016] Figure 1 Schematic diagram of the weight measuring device Figure 1 .

[0017] Figure 2 Schematic diagram of the weight measuring device Figure 2 .

[0018] Figure 3 This is a schematic diagram of the support frame.

[0019] Figure 4 This is a structural diagram of the base.

[0020] Figure 5 This is a schematic diagram of the internal structure of the support mechanism.

[0021] In the diagram: 1. Base; 11. Receiving cavity; 12. Base plate; 13. Moving handle; 14. Connecting plate; 15. Caster wheel with brake; 2. Weighing mechanism; 21. Weighing plate; 22. Weighing sensor; 23. Lifting assembly; 24. Fixing frame; 241. Fixed vertical bar; 242. Fixed horizontal bar; 243. Positioning plate; 25. Lifting frame; 251. U-shaped bar; 252. Support pad; 253. Auxiliary bar; 254. Rotating part; 255. Arm support pad; 256. First rod body; 257. Rotating sleeve; 258. Second rod body; 26. Rotating component; 27. Rotating electric push rod; 3. Support mechanism; 31. Hook part; 32. Hook groove; 33. Pressure sensor; 34. Connecting section; 35. Contact section; 36. Inclined support section; 4. Control mechanism; 41. Display screen; 42. Power supply assembly. Detailed Implementation

[0022] The present invention will be further described below through specific embodiments.

[0023] like Figures 1 to 5 As shown, this embodiment provides a weight measuring device suitable for wheelchair patients, including a base 1, a weighing mechanism 2, a support mechanism 3, and a control mechanism 4.

[0024] The base 1 includes a receiving cavity 11 formed on the base 1 for wheelchair access, a base plate 12, two movable handles 13 spaced apart on one side of the top of the base plate 12 opposite to the weighing mechanism 2, a connecting plate 14 connecting the two movable handles 13, and four braked casters 15 arranged around the bottom of the base plate 12. The receiving cavity 11 extends inward from one side of the base plate 12. By providing braked casters 15, the weight measuring device can be moved and fixed, placing the weight measuring device in a designated position for convenient use and storage, and preventing the base 1 from sliding during the use of the weighing mechanism 2, thus improving the safety of the weight measuring device. Specifically, the braked casters 15 are casters in the prior art that can achieve a self-locking effect; their specific structure and principle will not be further elaborated here.

[0025] Weighing mechanism 2, mounted on base 1 opposite to receiving cavity 11, includes a weighing plate 21, a weighing sensor 22 disposed between the weighing plate 21 and base 1, and a lifting assembly 23 mounted on the weighing plate 21. The lifting assembly 23 includes a fixed frame 24 mounted on the weighing plate 21, a lifting frame 25 rotatably mounted on the fixed frame 24, and a rotating component 26 mounted on the fixed frame 24 and connected to and driving the lifting frame 25 to rotate. Through the cooperation of the weighing plate 21, weighing sensor 22, and lifting assembly 23, the patient can be lifted from the wheelchair for weighing. Specifically, after the wheelchair and patient enter the receiving cavity 11, the patient's upper body lies prone on the lifting frame 25, and the rotating component 26 drives the lifting frame 25 to rotate upwards. At this time, the patient on the lifting frame 25 is slowly lifted off the wheelchair and their entire body is supported on the lifting frame 25 in a suspended state, thereby weighing the patient on the lifting frame 25; further, the fixing frame 24 includes two fixed vertical rods 241 opposite to the side where the weighing plate 21 is set, a fixed horizontal rod 242 connected between the tops of the two fixed vertical rods 241, and a positioning plate 243 set between the two fixed vertical rods 241 and below the fixed horizontal rod 242; further, the lifting frame 25 includes a U-shaped rod 251 with its opening on the same side as the opening of the receiving cavity 11, a support pad 252 set on the surface of the U-shaped rod 251 opposite to the upper body of the patient, and two inclined upward extensions set on the outside of the U-shaped rod 251 on both sides of the support pad 252 to allow the patient's hands to be used. The system includes two auxiliary rods 253 for gripping and a rotating part 254 that is rotatably connected to the fixed crossbar 242 on the opposite surface of the U-shaped rod 251 and the fixed frame 24. Two arm support pads 255 are provided at both ends of the U-shaped rod 251, which can support the patient under their armpits. When the patient lies prone on the support frame 25, their hands grip the two auxiliary rods 253, the support pads 252 are located on the patient's chest, and the arm support pads 255 are positioned under the patient's armpits. The cooperation between the two auxiliary rods 253 and the arm support pads 255 prevents the patient from slipping off the support pads 252 as the support frame 25 rotates upwards. The support pads 252 are made of flexible material to improve patient comfort. Furthermore, the rotating part 254 includes... The frame includes two first rods 256 extending horizontally outward from the opposite surface of the U-shaped rod 251 and the fixed frame 24, a rotating sleeve 257 connected between the ends of the two first rods 256 and sleeved on the outer periphery of the fixed crossbar 242, and a second rod 258 inclined between the rotating sleeve 257 and the support pad 252, with the second rod 258 located between the two first rods 256; furthermore, the rotating component 26 includes a rotating electric push rod 27 rotatably mounted on the positioning plate 243 and connected to the lifting frame 25, with one end of the rotating electric push rod 27 connected to the second rod 258; in use, the two first rods 256, the rotating sleeve 257 and the second rod 258 form a triangular structure, improving the load-bearing capacity and stability of the lifting frame 25, so that the lifting frame 25 can stably lift the patient.

[0026] Support mechanism 3, located between base 1 and lifting assembly 23, is used to prevent the center of gravity of weighing mechanism 2 from shifting. It includes a hook portion 31 on connecting plate 14, a hook groove 32 on positioning plate 243 that mates with the hook portion 31, and a pressure sensor 33 on the opposite surfaces of the hook portion 31 and hook groove 32. Connecting plate 14 and positioning plate 243 are positioned opposite each other. The interaction between the hook portion 31, hook groove 32, and pressure sensor 33 helps maintain the center of gravity of the lifting frame 25 and the patient, preventing the center of gravity of weighing mechanism 2 from shifting during the upward rotation of the lifting frame 25, which could cause the weight measuring device to tip over. Specifically, pressure sensor 33 is connected to control mechanism 4. When the patient is in a prone position supported on the lifting frame 25, and the lifting frame 25 rotates upward to slowly lift the patient, the pressure sensor 33 on the hook portion 31 and hook groove 32 engage with the hook groove 31. The groove 32 remains abutted until the patient leaves the wheelchair and their entire body is supported on the support frame 25 in a suspended state. At this time, the patient's center of gravity and the center of gravity of the support frame 25 are in a relatively balanced position. The pressure sensor 33 does not contact the hook groove 32, and the weighing sensor 22 can obtain the weight data of the patient and the support component 23, and simultaneously feed back the obtained weight data to the control mechanism 4. Furthermore, the hook part 31 includes a connecting section 34 extending horizontally outward from the opposite surface of the connecting plate 14 and the positioning plate 243, a contact section 35 extending vertically downward from the end of the connecting section 34 to form a contact with the inner wall of the hook groove 32, and an inclined support section 36 inclined between the connecting section 34 and the connecting plate 14. The pressure sensor 33 is set on the contact section 35. In use, the connecting section 34, the connecting plate 14 and the inclined support section 36 are arranged in a triangular structure, which improves the support of the hook part 31.

[0027] Control mechanism 4, mounted on base 1, connects to and controls the operation of weighing sensor 22, rotating component 26, and support mechanism 3. It includes a controller, a display screen 41 mounted on base 1 and connected to the controller, and a power supply assembly 42 mounted on base 1 and connected to the controller, which supplies power to the display screen 41, rotating electric push rod 27, weighing sensor 22, and pressure sensor 33 respectively. Specifically, the controller is connected to the rotating electric push rod 27, weighing sensor 22, and pressure sensor 33 respectively. The display screen 41 is a touch screen, through which commands are issued to the controller, thereby controlling the operation of the rotating electric push rod 27, weighing sensor 22, and pressure sensor 33. When the pressure sensor 33 does not provide data feedback to control mechanism 4, the weighing sensor... Sensor 22 feeds back the obtained weight data of the patient and the lifting component 23 to the controller. The control mechanism 4 subtracts the fixed weight of the lifting component 23 from the obtained weight data according to the preset program to obtain the patient's weight, which is then displayed on the display screen 41. Furthermore, the controller can be a microcontroller or other controller capable of achieving the limiting effect. Its cooperation with the display screen 41, the rotating electric push rod 27, the weighing sensor 22, the pressure sensor 33, and the power supply component 42 is the same as that in the prior art. The specific model selection and working principle will not be further elaborated here. Furthermore, the display screen 41 is a control display device with a touch screen commonly used in the prior art. The specific model selection and working principle will not be further elaborated here.

[0028] The operating principle of this application is as follows:

[0029] During measurement, the patient and wheelchair are first moved and secured within the receiving cavity 11, with the support frame 25 positioned in front of the patient. The patient's upper body is then positioned prone on the support frame 25. The control mechanism 4 controls the rotation of the electric push rod 27, which drives the support frame 25 upwards, slowly lifting the patient off the wheelchair. As the support frame 25 rotates upwards, its center of gravity shifts towards the patient's center of gravity. The pressure sensor 33 on the hook 31 remains in contact with the hook groove 32. When the support frame 25 reaches a certain position, the patient's entire body is suspended on the support frame 25, and the centers of gravity of the patient, support frame 25, and fixing frame 24 are in relative equilibrium without shifting. At this time, the pressure sensor 33 on the hook part 31 is not in contact with the hook groove 32. The weighing sensor 22 feeds back the obtained weight data to the control mechanism 4. The control mechanism 4 subtracts the fixed weight of the lifting component 23 from the obtained weight data according to the preset program to obtain the patient's weight, which is then displayed on the display screen 41. After the measurement is completed, the control mechanism 4 controls the rotating electric push rod 27 to work. The rotating electric push rod 27 drives the lifting frame 25 to rotate downward, slowly lowering the patient who is lying face down on the lifting frame 25 and bringing him into contact with the wheelchair, so that the patient can safely return to the wheelchair. The entire weight measurement process is simple and quick. Medical staff only need to assist the patient to lie face down on the lifting frame 25 to weigh the patient alone. There is no need to move the wheelchair or weigh the wheelchair a second time, which reduces the workload of medical staff and improves the weighing efficiency of wheelchair patients.

[0030] In summary, by utilizing the above-mentioned technical solution of this utility model, through the cooperation of the base 1, the weighing mechanism 2 set on the base 1 opposite to the receiving cavity 11, the support mechanism 3 set between the base 1 and the lifting component 23, and the control mechanism 4 set on the base 1, when the lifting frame 25 rotates to a certain position, the patient's entire body is supported on the lifting frame 25 in a suspended state, and the center of gravity of the patient, the lifting frame 25, and the fixed frame 24 is in a relatively balanced state at this moment without any shift. At this time, the support mechanism 3 and the weighing mechanism 2 are not in contact, and the weighing sensor 22 feeds back the obtained weight data to the control mechanism 4. The control mechanism 4 subtracts the fixed weight of the lifting component 23 from the obtained weight data according to the preset program to obtain the patient's weight. This allows medical staff to weigh the patient independently without moving the wheelchair or weighing the wheelchair a second time, reducing the workload of medical staff and improving the weighing efficiency of wheelchair patients.

[0031] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application and the contents of the specification should still fall within the scope of the present utility model application.

Claims

1. A weight measuring device suitable for wheelchair patients, characterized in that: The system includes a base, a weighing mechanism, a support mechanism, and a control mechanism. The base includes a receiving cavity formed on the base for wheelchair access. The weighing mechanism is disposed on the base opposite the receiving cavity and includes a weighing plate, a weighing sensor disposed between the weighing plate and the base, and a lifting assembly disposed on the weighing plate. The lifting assembly includes a fixed frame disposed on the weighing plate, a lifting frame rotatably disposed on the fixed frame, and a rotating component disposed on the fixed frame and connected to and driving the lifting frame to rotate. The support mechanism is disposed between the base and the lifting assembly to prevent the center of gravity of the weighing mechanism from shifting. The control mechanism is disposed on the base and connects to and controls the operation of the weighing sensor, the rotating component, and the support mechanism.

2. The weight measuring device suitable for wheelchair patients according to claim 1, characterized in that: The fixing frame includes two fixed vertical rods on one side opposite to the weighing plate, a fixed horizontal rod connected between the tops of the two fixed vertical rods, and a positioning plate located between the two fixed vertical rods and below the fixed horizontal rod.

3. A weight measuring device suitable for wheelchair patients according to claim 2, characterized in that: The support frame includes a U-shaped rod with its opening on the same side as the opening of the receiving cavity, a support pad on the surface of the U-shaped rod opposite to the patient's upper body, two auxiliary rods on the outside of the U-shaped rod respectively on both sides of the support pad and extending upwards so that the patient can hold them with both hands, and a rotating part on the surface of the U-shaped rod opposite to the fixed frame and rotatably connected to the fixed crossbar. Two arm support pads are provided at both ends of the U-shaped rod, and the two arm support pads can support the patient under the armpits respectively.

4. A weight measuring device suitable for wheelchair patients according to claim 3, characterized in that: The rotating part includes two first rods extending horizontally outward from the opposite surface of the U-shaped rod and the fixed frame, a rotating sleeve connected between the ends of the two first rods and sleeved on the outer periphery of the fixed crossbar, and a second rod inclined between the rotating sleeve and the support pad, the second rod being located between the two first rods.

5. A weight measuring device suitable for wheelchair patients according to claim 4, characterized in that: The rotating component includes a rotating electric push rod that is rotatably mounted on the positioning plate and connected to the lifting frame, with one end of the rotating electric push rod connected to the second rod body.

6. A weight measuring device suitable for wheelchair patients according to claim 2, characterized in that: The base includes a base plate, two movable handles spaced apart on one side of the top of the base plate opposite to the weighing mechanism, a connecting plate connected between the two movable handles opposite to the positioning plate, and four casters with brakes arranged around the bottom of the base plate. The receiving cavity extends inward from one side of the base plate.

7. A weight measuring device suitable for wheelchair patients according to claim 6, characterized in that: The support mechanism includes a hook portion on the connecting plate, a hook groove on the positioning plate that cooperates with the hook portion, and a pressure sensor on the opposite surface of the hook portion and the hook groove. The pressure sensor is connected to the control mechanism. When the patient is lifted by the lifting frame for weighing, the pressure sensor does not contact the hook groove. At this time, the control mechanism controls the weighing sensor to weigh.

8. A weight measuring device suitable for wheelchair patients according to claim 7, characterized in that: The hook portion includes a connecting section extending horizontally outward from the opposite surface of the connecting plate and the positioning plate, a contact section extending vertically downward from the end of the connecting section to form a contact section opposite to the inner wall of the hook groove, and an inclined support section inclinedly disposed between the connecting section and the connecting plate. The pressure sensor is disposed on the contact section.

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