Anti-pinch bed guardrail
By installing a detection module and a warning module between the hinge seat and the hinge part of the bed rail, and using a pressure sensor to detect foreign objects and issue a warning signal, the problem of pinching injuries caused by blind spots or insufficient light when the bed rail moves is solved, achieving higher safety and intelligent early warning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDE CENT HOSPITAL
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
The existing bed rails pose a safety hazard when the rails move from the retracted position to the extended position, as blind spots or insufficient light may cause patients' toes or other parts to accidentally fall into the gaps and get injured.
A detection module and an alarm module are installed between the hinge seat and the hinge part of the bed rail. A pressure sensor is used to detect whether there are foreign objects in the gap and to issue an alarm signal when a foreign object is detected. The alarm module is controlled by a controller to provide visual or audible alarms.
It effectively avoids pinching accidents caused by blind spots or insufficient light, improves the safety of bed rails, and reduces the risk of patients being pinched through active identification and early warning mechanisms.
Smart Images

Figure CN224540497U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hospital bed technology, and more specifically, to a hospital bed rail that prevents pinching injuries. Background Technology
[0002] The content in this section only provides background information related to this utility model and may not constitute prior art.
[0003] Common retractable hospital bed rails, such as Figure 1 and Figure 2 As shown, it typically includes a railing 10 and a support rod 20. A hinge seat 30 is fixedly installed at the bottom of the railing 10. One end of the support rod 20 has a hinge portion 40 that hinges to the hinge seat 30, and the other end of the support rod 20 is hinged to the bed frame. The hinge seat 30 has a first contact surface 31, and the hinge portion has a second contact surface 41 corresponding to the first contact surface 31.
[0004] Among them, when the railing 10 is in such a position Figure 1 When the railing 10 is in the retracted position as shown, it is folded to the side of the mattress and supported on the bed frame; at this time, the first contact surface 31 of the hinge seat 30 and the second contact surface 41 of the hinge portion 40 are separated from each other, forming a significant notch a. When the railing 10 is in such a position... Figure 2 When in the unfolded position shown, the railing 10 stands on the side of the mattress and is raised to provide protection; at this time, the first contact surface 31 and the second contact surface 41 are close to each other and maintain a small gap, and the gap a basically disappears.
[0005] In clinical practice, it has been found that due to the large gap between the first and second contact surfaces of the bed rail when it is folded up, patients' toes and other body parts can easily fall into the gap. When the bed rail is operated in a dimly lit environment (such as at night with the lights off) and moved from the folded position to the unfolded position, if the patient's toes or other body parts are not noticed to have fallen into the gap, it may lead to pinching accidents, posing a significant safety hazard. Summary of the Invention
[0006] In view of this, the purpose of this utility model is to provide a bed rail that prevents pinching injuries, so as to overcome the technical problem that the toes or other body parts of patients who accidentally fall into the gap are easily pinched when the operating rail moves from the retracted position to the unfolded position.
[0007] The technical problem of patients being easily injured when their toes or other body parts accidentally get caught in gaps in the guardrail.
[0008] The objective of this utility model is achieved through the following technical solution: This utility model provides a bed rail to prevent pinching injuries, including a railing and a support rod. The railing is provided with a hinge seat, and one end of the support rod is provided with a hinge part that is hinged to the hinge seat. The hinge seat has a first contact surface, and the hinge part has a second contact surface. The bed rails designed to prevent pinching injuries also include: The detection module is used to detect whether there are foreign objects in the gap between the first contact surface and the second contact surface during the movement of the railing from the retracted position to the unfolded position; The warning module is used to issue a warning signal when the detection module detects the presence of the foreign object.
[0009] Optionally, the detection module includes a pressure sensor disposed between the first contact surface and the second contact surface.
[0010] Optionally, the pressure sensor is a thin-film pressure sensor and is disposed on the first contact surface or the second contact surface.
[0011] Optionally, the warning module includes a warning light.
[0012] Optionally, the warning light is disposed on the hinge seat and adjacent to the first contact surface.
[0013] Optionally, the anti-pinch bed rail also includes: The controller is communicatively connected to both the detection module and the warning module; the controller is configured to receive detection signals from the detection module and control the working state of the warning module based on the detection signals.
[0014] Optionally, the hinge seat or the hinge portion is provided with an identification element, which is made of fluorescent material.
[0015] Optionally, the marking element is disposed on the hinge seat and adjacent to the first contact surface; or, The identification element is disposed on the hinge portion and is adjacent to the second contact surface.
[0016] Optionally, a buffer layer is provided on the first contact surface and / or the second contact surface.
[0017] Optionally, the buffer layer is made of silicone.
[0018] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects: The bed rail provided by this utility model, by setting a detection module and a warning module, can actively identify whether there are foreign objects in the gap between the hinge seat and the hinge part during the dynamic process of operating the rail rail to unfold, and immediately issue a warning when foreign objects are detected, thereby fundamentally avoiding pinching accidents caused by blind spots or insufficient light, and greatly improving the safety of the bed rail. Attached Figure Description
[0019] Figure 1 This is a front view of a bed rail known in the prior art in one of its states; it shows the railing in the retracted position. Figure 2 This is a front view of a bed rail known in the prior art in another state; it shows the railing in the extended position. Figure 3 A schematic diagram of the structure of a bed rail provided for an embodiment of this utility model; it shows the situation when the rail is in the retracted position.
[0020] Icons: 10-railing, 20-support rod, 30-hinged seat, 31-first contact surface, 40-hinged part, 41-second contact surface, 50-detection module, 60-warning module, 70-identifier, a-notch. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0022] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components with different arrangements, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.
[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components.
[0024] An embodiment of this utility model provides a bed rail to prevent pinching injuries. Figure 3 A schematic diagram illustrating the structure of the bed rail provided in an embodiment of this utility model is shown. It is worth noting that the appendix of this utility model... Figures 1 to 3 The bed rail shown is not the complete structure of the rail, but only the part of the bed rail that is related to the inventive concept of this utility model. For the structure of the entire bed rail, please refer to the bed rails actually used in the prior art, and will not be described in detail here.
[0025] like Figure 3 As shown, according to an embodiment of the present invention, a hospital bed rail may include a railing 10 and a support rod 20. A hinge seat 30 is fixedly provided on the railing 10, particularly at its bottom near its end. One end of the support rod 20 has a hinge portion 40 that is hingedly connected to the hinge seat 30, and the other end of the support rod 20 is hingedly connected to the edge of the hospital bed. Furthermore, the hinge seat 30 has a first contact surface 31, and the hinge portion 40 has a second contact surface 41 corresponding to the first contact surface 31.
[0026] For this type of bed rail, the railing 10 can move between a retracted position and an extended position. Specifically, when the railing 10 is in the retracted position (see reference...), Figure 1 When the position shown is reached, the railing 10 is folded to the side of the mattress and supported on the bed frame; at this time, the first contact surface 31 of the hinge seat 30 and the second contact surface 41 of the hinge part 40 separate from each other, forming a significant notch a. When the railing 10 is in the extended position (see reference...), Figure 2 When the position shown is reached, the railing 10 is placed on the side of the mattress and raised to provide protection; at this time, the hinge 40 and the hinge seat 30 rotate relative to each other, the first contact surface 31 and the second contact surface 41 approach each other and maintain a small gap, and the notch a basically disappears.
[0027] Furthermore, in order to overcome the technical problem that the toes or other body parts of patients who accidentally enter the gap may be pinched when the operating railing 10 moves from the retracted position to the extended position, such as... Figure 3 The bed rail provided by this utility model may further include a detection module 50 and an alarm module 60. The detection module 50 is used to detect whether there are foreign objects in the gap a between the first contact surface 31 and the second contact surface 41 during the movement of the rail 10 from the retracted position to the extended position. The alarm module 60 is used to issue an alarm signal when the detection module 50 detects the presence of a foreign object.
[0028] The foreign object described in this invention is not limited to body parts such as the patient's toes, but can also be other possible objects, such as clothing or bedding.
[0029] According to an embodiment of this utility model, by setting a detection module 50 and an alarm module 60, it is possible to actively identify whether there are foreign objects in the gap a between the hinge seat 30 and the hinge part 40 during the dynamic process of unfolding the operating railing 10, and immediately issue an alarm when foreign objects are detected, thereby fundamentally avoiding pinching accidents caused by blind spots or insufficient light, and greatly improving the safety of the bed railing.
[0030] In some possible embodiments, the detection module 50 may include a pressure sensor disposed between the first contact surface 31 and the second contact surface 32. By employing a pressure sensor, it is possible to directly, reliably, and rapidly detect whether there is a foreign object in the notch a. Specifically, if there is no foreign object in the notch a, the pressure sensor will not detect a pressure signal during the entire process of the railing 10 moving from the retracted position to the extended position. Correspondingly, only when there is a foreign object in the notch a will the pressure sensor detect a pressure signal due to the proximity of the first contact surface 31 and the second contact surface 41, thereby realizing the detection of the presence of a foreign object.
[0031] Furthermore, the pressure sensor can be a thin-film pressure sensor, and this thin-film pressure sensor can be directly attached to the first contact surface 31 or the second contact surface 41. Preferably, the thin-film pressure sensor can be arranged on the first contact surface 31 of the hinge seat 30, a component with relatively simple movement.
[0032] By employing a thin-film pressure sensor, its ultra-thin characteristics can minimize the impact on the proximity of the first contact surface 31 and the second contact surface 41, allowing the hinge seat 30 and the hinge part 40 to smoothly perform their respective mechanical functions. At the same time, it can directly and sensitively detect pressure abnormalities between the first contact surface 31 and the second contact surface 41, providing the possibility for accurate detection of the presence of foreign objects.
[0033] In some possible embodiments, the warning module 60 may include a warning light. When the detection module 50 detects a foreign object, the warning light will illuminate as a warning signal. By employing a warning light, an intuitive visual alarm can be provided to the operator of the railing 10 when a foreign object is present in the notch a. This is particularly noticeable in low-light environments, effectively reminding the operator to stop immediately, while avoiding the drawback of an audible alarm potentially disturbing the patient's rest. Of course, without considering disturbing the patient, the warning module 60 can also be an audible and visual alarm capable of simultaneously emitting sound and light signals.
[0034] Furthermore, the warning light can be directly mounted on the hinge seat 30, adjacent to the first contact surface 31. This design provides the operator with the clearest and most direct visual indication, enabling the operator to quickly locate the risk location and react swiftly.
[0035] In some possible embodiments, the bed rail provided by this utility model may further include a controller (not shown in the figure). The controller is communicatively connected to the detection module 50 and the warning module 60, respectively. Furthermore, the controller is configured to receive detection signals from the detection module 50 and control the operating state of the warning module 60 based on the detection signals. That is, when the detection module 50 detects a foreign object inside the notch a, the detection module 50 can send a detection signal to the controller. At this time, the controller can control the warning module 60 to issue a warning signal based on the detection signal, such as controlling the warning light to illuminate.
[0036] By configuring the controller, the controller, detection module 50, and warning module 60 together form a fast-response foreign object detection and early warning system, which can quickly detect and warn of foreign objects, thus improving the level of intelligence.
[0037] In some possible embodiments, reference continues to be made to Figure 3 A fluorescent marker 70 can also be installed on the hinge seat 30 or hinge part 40. The marker 70 can bear warning messages such as "Prevent pinching injury." By using the fluorescent marker 70, it automatically illuminates in low-light environments, serving as a passive warning and further reminding the operator to be aware of any foreign objects in the gap a when operating the railing 10. This reduces the possibility of injury from accidental entry of a patient's body into the gap a. This design effectively complements the active detection and early warning functions implemented by the detection module 50 and the warning module 60.
[0038] Furthermore, the marking element 70 can be disposed in at least two ways. Specifically, the marking element 70 can be disposed on the hinge seat 30 and adjacent to the first contact surface 31; or, the marking element 70 can be disposed on the hinge portion 40 and adjacent to the second contact surface 41. This design, in which the marking element 70 is disposed adjacent to the contact surface, can more accurately indicate the specific location of the notch a and is beneficial for the operator to distinguish the outline of the mechanical structure in low-light environments, thereby providing the possibility of actively avoiding foreign objects from entering the notch a.
[0039] In some possible embodiments, a buffer layer (not shown in the figure) may also be provided on the first contact surface 31 of the hinge seat 30 and / or the second contact surface 41 of the hinge portion 40. With the provision of the buffer layer, even in the extremely rare event of a patient being pinched, the degree of crushing injury can be effectively reduced by the soft material buffer layer, providing the patient with a final physical protection.
[0040] Furthermore, the cushioning layer can be made of flexible and durable silicone, ensuring cushioning effect while also being easy to clean and suitable for long-term use.
[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A bed rail to prevent pinching injuries, comprising a railing and a support rod, wherein the railing is provided with a hinge seat, and one end of the support rod is provided with a hinge portion that is hingedly connected to the hinge seat, the hinge seat having a first contact surface, and the hinge portion having a second contact surface; characterized in that, Also includes: The detection module is used to detect whether there are foreign objects in the gap between the first contact surface and the second contact surface during the movement of the railing from the retracted position to the unfolded position; The warning module is used to issue a warning signal when the detection module detects the presence of the foreign object.
2. The bed rail according to claim 1, characterized in that, The detection module includes a pressure sensor disposed between the first contact surface and the second contact surface.
3. The bed rail according to claim 2, characterized in that, The pressure sensor is a thin-film pressure sensor and is disposed on the first contact surface or the second contact surface.
4. The bed rail according to claim 1, characterized in that, The warning module includes a warning light.
5. The bed rail according to claim 4, characterized in that, The warning light is mounted on the hinge seat and is located adjacent to the first contact surface.
6. The bed rail according to claim 1, characterized in that, Also includes: The controller is communicatively connected to both the detection module and the warning module. The controller is configured to receive detection signals from the detection module and control the working state of the warning module based on the detection signals.
7. The bed rail according to claim 1, characterized in that, The hinge seat or the hinge part is provided with an identification element, which is made of fluorescent material.
8. The bed rail according to claim 7, characterized in that, The marking element is disposed on the hinge seat and is adjacent to the first contact surface; or, The identification element is disposed on the hinge portion and is adjacent to the second contact surface.
9. The bed rail according to claim 1, characterized in that, A buffer layer is provided on the first contact surface and / or the second contact surface.
10. The bed rail according to claim 9, characterized in that, The buffer layer is made of silicone.