A bedridden patient position sensing device

By designing a combination of mattress, frame, sensor, rocker, and ramp, the sensitivity of the bedridden patient position sensing device is improved by utilizing the lever principle. This solves the problem of inaccurate sensing when the patient is close to the edge of the bed and enables the rapid identification of the risk of the patient falling.

CN224484367UActive Publication Date: 2026-07-14河北中石油中心医院

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
河北中石油中心医院
Filing Date
2025-08-04
Publication Date
2026-07-14

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Abstract

This utility model discloses a bedridden patient position sensing device, relating to the field of medical care technology. It includes: a mattress with upward bulges on both sides near the bed edge; a frame surrounding the bottom of the mattress; sensors evenly distributed on the mattress, with the sensor located at the bed edge below the bulges and above the frame, and slidably mounted; and a rocker arm rotatably mounted on the frame, with the rotation point located between the two ends of the rocker arm. When the patient moves to the bed edge and is about to fall, the rocker arm rotates, and a pressure plate presses one end of the rocker arm, causing the other end to tilt upward. Simultaneously, the sensor moves upward, allowing the rocker arm to quickly approach the sensor. Only a small force is needed to trigger the sensor, shortening the sensing distance between the rocker arm and the sensor, enabling rapid detection of whether the patient is about to fall off the bed, thus better ensuring the patient's safety.
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Description

Technical Field

[0001] This utility model relates to the technical field of medical care, specifically to a bedridden patient position sensing device. Background Technology

[0002] In the medical care process, real-time monitoring of the patient's position is crucial for bedridden patients. Timely understanding of changes in the patient's position helps medical staff and family members promptly identify potential risks of falls from bed, changes in posture due to physical discomfort, and other situations, allowing for appropriate nursing interventions to ensure the patient's safety and health.

[0003] Currently, most existing bedridden patient position sensing devices suffer from insufficient sensitivity, especially when the patient is close to the edge of the bed, resulting in poor accuracy. Some devices have fixed sensor positions, making it difficult to quickly and accurately detect changes in patient position when they are close to the bed due to factors such as sensing distance. This can easily lead to monitoring delays or misjudgments, causing inconvenience to nursing care.

[0004] Therefore, those skilled in the art have provided a bedridden patient position sensing device to solve the problems mentioned above. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a bedridden patient position sensing device.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A bedridden patient position sensing device, comprising:

[0008] A mattress has a certain degree of elasticity, with its sides near the edge of the bed bulging upwards.

[0009] The border surrounds the bottom of the mattress;

[0010] The sensors are evenly distributed on the mattress, with the sensors located at the edge of the mattress positioned below the raised area and above the edge, and are designed to slide.

[0011] A rocker arm is rotatably mounted on the frame, with the rotation point located between the two ends of the rocker arm. An elastic support is provided at the bottom of the rocker arm, and the end of the rocker arm away from the elastic support is located below the sensor.

[0012] An inclined plate, which is rotatably positioned within a raised area inside the mattress;

[0013] The pressure plate is fixed to the bottom of the inclined plate, and the bottom of the pressure plate contacts the rocker on the side of the rocker's rotation point facing the elastic support.

[0014] When the inclined plate is squeezed and rotates downward, the sensor moves upward and approaches the inclined plate to shorten the sensing distance.

[0015] Preferably, in its natural state, the inclination angle of the inclined plate is the same as the inclination angle of the raised edge of the mattress towards the center of the bed.

[0016] Preferably, the elastic support is located below the pressure plate and at one end of the rocker, and the distance from the rocker's rotation point to the end where the elastic support is located is greater than the distance to the other end.

[0017] Preferably, a guide rod is fixedly installed at the bottom of the sensor located at the edge of the bed, and a guide tube is movably sleeved on the guide rod, with the guide tube fixed to the frame.

[0018] Preferably, both the guide rod and the guide tube are bent toward the inclined plate, and when the sensor moves upward and contacts the inclined plate, the top sensing area of ​​the sensor faces the lower surface of the inclined plate.

[0019] In summary, this utility model has the following beneficial technical effects:

[0020] When a patient moves to the edge of the bed and is about to fall, the inclined plate is squeezed to rotate, and the pressure plate squeezes one end of the rocker to make the other end tilt up. The sensor moves upward in sync, allowing the inclined plate to quickly approach the sensor. Only a small force is needed to trigger the sensor, shortening the sensing distance between the inclined plate and the sensor. This allows for quick detection of whether the patient is about to fall off the bed, thus better ensuring the patient's safety. Attached Figure Description

[0021] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the front view of this utility model;

[0024] Figure 3 This is a side view cross-sectional structural diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the front view cross-sectional structure of the inclined plate of this utility model.

[0026] Explanation of reference numerals in the attached diagram: 1. Mattress; 2. Frame; 3. Sensor; 4. Rocker; 5. Inclined plate; 31. Guide rod; 32. Guide tube; 51. Pressure plate. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] A bedridden patient position sensing device, referring to Figure 1-4 ,include:

[0029] Mattress 1 has upward bulges on both sides near the edge of the bed. This structural design can provide some protection for the patient's body and reduce the risk of the patient slipping off the edge of the bed. It also provides suitable space for the installation of the inclined board 5.

[0030] The frame 2 surrounds the bottom of the mattress 1. The frame 2 serves to support and fix the various parts of the device, ensuring the overall structural stability of the device.

[0031] Sensor 3 is evenly distributed on the mattress 1 to sense the patient's lying position. Located at the edge of the bed, sensor 3 is positioned below the raised area and above the frame 2, and is designed to slide. This sliding design allows sensor 3 to adjust its position according to changes in the patient's body position, improving the accuracy of sensing.

[0032] The rocker arm 4 is rotatably mounted on the frame 2, with the rotation point located between the two ends of the rocker arm 4. An elastic support is provided at the bottom of the rocker arm 4, and the end of the rocker arm 4 away from the elastic support is located below the sensor 3. The elastic support provides elastic support for the rocker arm 4, enabling the rocker arm 4 to return to its original position after rotation, thus ensuring the raised state of the mattress 1 on both sides near the edge of the bed.

[0033] The inclined plate 5 is rotatably positioned within the raised area of ​​the mattress 1. In its natural state, the inclination angle of the inclined plate 5 is the same as the inclination angle of the raised edge of the mattress 1 towards the center of the bed. This design allows the inclined plate 5 to conform to the raised portion of the mattress 1 in its natural state, ensuring the flatness of the mattress surface and improving patient comfort. The number of inclined plates 5 corresponds to the number of sensors 3, and the inclined plates 5 are also evenly distributed to ensure that the raised position of the mattress 1 is well maintained.

[0034] A pressure plate 51 is fixed to the bottom of the inclined plate 5. The bottom of the pressure plate 51 contacts the rocker arm 4 at the side where the rocker arm 4's rotation point faces the elastic support. The elastic support is located below the pressure plate 51 and at one end of the rocker arm 4. The distance from the rocker arm 4's rotation point to the end with the elastic support is greater than the distance to the other end. This structural design utilizes the lever principle, allowing the inclined plate 5 to produce a significant rotation of the rocker arm 4 even with relatively small pressure, thereby improving the device's sensitivity.

[0035] When the inclined plate 5 is squeezed and rotates downward, that is, when the patient moves to the edge of the bed and is about to fall, it will squeeze the inclined plate 5 to rotate, and the pressure plate 51 will squeeze one end of the rocker 4 to make the other end tilt up. The sensor 3 will move upward simultaneously, so that the inclined plate 5 can quickly approach the sensor 3. Only a small force is needed to trigger the sensor 3, so that the inclined plate 5 shortens the sensing distance with the sensor 3, which can quickly identify whether the patient is about to fall off the bed. The sensor 3 can be connected to an alarm to provide a danger alarm, thereby better ensuring the safety of the patient.

[0036] A guide rod 31 is fixedly installed at the bottom of the sensor 3 located at the edge of the bed. A guide tube 32 is movably sleeved on the guide rod 31 and fixed to the frame 2. The cooperation of the guide rod 31 and the guide tube 32 provides guidance for the sliding of the sensor 3, ensuring that the sensor 3 can slide stably up and down. Both the guide rod 31 and the guide tube 32 are bent towards the inclined plate 5, and when the sensor 3 moves upward and contacts the inclined plate 5, the top sensing area of ​​the sensor 3 is directly facing the lower surface of the inclined plate 5. This design ensures the stability and accuracy of the signal from the sensor 3 during the sensing process.

[0037] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A bed patient position sensing device, characterized by, include: The mattress (1) has two sides that bulge upwards near the edge of the bed; The frame (2) surrounds the bottom of the mattress (1) around its perimeter; The sensor (3) is evenly laid on the mattress (1). The sensor (3) located at the edge of the bed is located below the raised position and above the frame (2), and is slidably set. The rocker (4) is rotatably mounted on the frame (2), with the rotation point located between the two ends of the rocker (4), and an elastic support is provided at the bottom of the rocker (4). The end of the rocker (4) away from the elastic support is located below the sensor (3). Inclined plate (5), which is rotatably disposed within a raised position within the mattress (1); The pressure plate (51) is fixed to the bottom of the inclined plate (5). The bottom of the pressure plate (51) contacts the rocker (4) on the side of the rocker (4) with the rotation point of the rocker (4) facing the elastic support. When the inclined plate (5) is squeezed and rotates downward, the sensor (3) moves upward and approaches the inclined plate (5) to shorten the sensing distance.

2. A bed occupancy sensing apparatus for a bed patient according to claim 1, characterized in that: In its natural state, the tilt angle of the inclined plate (5) is the same as the tilt angle of the edge of the mattress (1) towards the center of the bed.

3. The bed occupancy sensing apparatus of claim 1, wherein: The elastic support is located below the pressure plate (51) and at one end of the rocker (4). The distance from the rotation point of the rocker (4) to the end where the elastic support is located is greater than the distance to the other end.

4. The bedridden patient position sensing device according to claim 1, characterized in that: A guide rod (31) is fixedly installed at the bottom of the sensor (3) located at the edge of the bed. A guide tube (32) is movably sleeved on the guide rod (31) and the guide tube (32) is fixed on the frame (2).

5. A bedridden patient position sensing device according to claim 4, characterized in that: Both the guide rod (31) and the guide tube (32) are bent toward the inclined plate (5), and when the sensor (3) moves upward and contacts the inclined plate (5), the top sensing area of ​​the sensor (3) is facing the lower surface of the inclined plate (5).