Patient falling alarm device
By utilizing the change in gravitational potential energy of a heavy ball in the patient fall alarm device to distinguish between falling and lying down, and combining audible and visual alarms with information transmission, the problem of false alarms in the device has been solved, and accurate patient fall alarms have been achieved.
Patent Information
- Application Number
- CN202520599031.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing patient fall alarm devices are prone to false alarms when patients lie down to rest, affecting the accuracy of the devices.
By incorporating a weighted ball and a channel assembly into the device, and utilizing the difference between the gravitational potential energy change of the weighted ball when falling and when lying down, an alarm is triggered only when the patient falls, activating a touch switch. This is combined with a buzzer and LED light strip for audible and visual alarm, and the information is sent via an MCU chip.
This improves the accuracy of alarms, reduces the probability of false alarms, and ensures that nursing staff are notified promptly when a patient falls.
Smart Images

Figure CN223956151U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to patient fall alarm technical field, especially a patient fall alarm device. BACKGROUND
[0002] Patient fall (especially the old, postoperative patients or the disabled) can cause serious consequences, such as patient fracture, increase patient head trauma, soft tissue injury etc. 72 hours after falling is the key period of complication observation, even if the patient surface is not hindered, the patient's vital signs and consciousness state should be closely monitored. Therefore, only in the patient after falling timely treatment can the harm caused by falling to the minimum. In order to be able to inform the medical staff or the accompanying staff in time after the patient falls, the prior art publication numbers CN213123280U, CN215814461U all provide a device that can alarm after the patient falls, so as to timely rescue the patient.
[0003] However, the existing fall alarm device is mostly through monitoring the body position change of the patient (such as: the patient changes from standing body position to lying body position) to judge whether the patient falls, this kind of alarm device is easy to judge the lying body position change of the patient when resting as falling, thereby causing false alarm, affecting the accuracy of this kind of alarm device. Therefore, it is urgent to propose a patient fall alarm device that can reduce the false alarm probability. SUMMARY
[0004] Therefore, the utility model aims at providing a patient fall alarm device, which can distinguish between patient lying and falling, improve the accuracy of alarm and reduce the false alarm probability.
[0005] The utility model provides a patient fall alarm device, including upper and lower distribution's upper shell and lower shell, the inside of upper shell is equipped with the buzzer for sending sound alarm, the bottom of buzzer is equipped with MCU chip;
[0006] The inside bottom of lower shell is equipped with heavy ball, the inside of upper shell and lower shell is equipped with passageway subassembly for limiting the moving path of heavy ball, the inside of upper shell and lower shell is separated four passageways through passageway subassembly, every passageway top is equipped with push plate subassembly and tactile switch, push plate subassembly and tactile switch all are fixed in the inside top of upper shell, heavy ball contacts push plate subassembly and tactile switch after patient falls, makes tactile switch send information to nurse station or accompanying staff through MCU chip, controls buzzer and sends sound alarm.
[0007] In an embodiment, the passageway subassembly includes a plurality of lower baffles fixed inside the lower shell and a plurality of upper baffles fixed inside the upper shell, the lower baffles and the upper baffles are aligned after the upper shell and the lower shell are closed.
[0008] The arc-shaped cover is provided in the middle of the upper shell interior, and the outer wall of the arc-shaped cover, the upper partition plate and the lower partition plate form four passages, which are respectively located at the front, rear, left and right of the patient.
[0009] In an embodiment, the push plate assembly comprises a circular push plate, which is located between two adjacent upper partition plates, and a spring fixed at the top of the circular push plate, with the top end of the spring fixed to the inner wall of the upper shell.
[0010] The tactile switch is located at the top of the circular push plate, and the spring is sleeved outside the tactile switch.
[0011] In an embodiment, a chip mounting seat is fixed at the bottom end of the upper shell interior, the buzzer is fixed inside the chip mounting seat, and the MCU chip is embedded at the bottom of the chip mounting seat.
[0012] The arc-shaped cover is sleeved outside the outer wall of the chip mounting seat and is connected with the chip mounting seat through threads.
[0013] In an embodiment, an LED light strip is embedded in the inner wall of the front side of the upper shell, which is used for alarming by being controlled by the MCU chip to light up after the heavy ball hits the push plate assembly, and the light color of the LED light strip is red.
[0014] The bottom of the chip mounting seat is provided with a GNSS receiving chip for positioning the position information of the patient, and the GNSS receiving chip is located on one side of the MCU chip, so as to facilitate the medical staff and accompanying personnel to timely locate the position of the fallen patient.
[0015] In an embodiment, a plurality of through holes are formed in the middle of the top of the upper shell, which are located directly above the buzzer, so as to facilitate the alarm sound of the buzzer to be transmitted to the surrounding.
[0016] In an embodiment, a bandage is fixed on each side of the upper shell, and a magic tape is sewn on the end of each bandage away from the upper shell, so as to bond the two bandages together to fix the upper shell on the waist side of the patient, and the bonding position can be adjusted to make the utility model applicable to patients with different waist sizes.
[0017] In an embodiment, a ring-shaped connecting plate is fixed at the top of the lower shell, a threaded groove for accommodating the ring-shaped connecting plate is formed in the bottom end of the upper shell, and the ring-shaped connecting plate is threadedly connected with the threaded groove.
[0018] The utility model has the advantages of:
[0019] 1. By using the difference between the change of the gravity potential energy of the heavy ball when falling and the change of the gravity potential energy of the heavy ball when the patient lies down, the heavy ball can exert different forces on the circular push plate when the patient falls and when the patient lies down for rest, so that the heavy ball can only push the circular push plate to contact the light touch switch when the patient falls, achieving the purpose of alarming only when the patient falls, solving the problem of false alarm of the traditional alarm device, and improving the accuracy of the alarm.
[0020] 2. By setting a buzzer and an LED light strip inside the upper shell to sound and light alarm when the patient falls, to remind the surrounding personnel, and by sending alarm information to the computer end of the nurse station or the mobile phone end of the accompanying personnel through the MCU chip, the patient who falls can be treated in time. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0022] Figure 1 is a schematic diagram of the overall structure of the present application;
[0023] Figure 2 is a sectional view of the upper shell and the lower shell of the present application;
[0024] Figure 3 is Figure 2 is an enlarged view of the middle A part;
[0025] Figure 4 is a top view of the lower shell and the lower partition plate of the present application;
[0026] Figure 5 is a bottom view of the upper shell and the upper partition plate of the present application;
[0027] Figure 6 is an exploded view of the upper shell, the chip mounting seat and the arc-shaped cover of the present application;
[0028] Figure 7 is an exploded view of the push plate assembly of the present application;
[0029] Figure 8 is a schematic diagram of the control system of the present application.
[0030] In the drawings:
[0031] 1, upper shell; 2, lower shell; 3, bandage; 4, magic tape; 5, annular connecting plate; 6, heavy ball; 7, channel assembly; 8, light touch switch; 9, MCU chip; 10, buzzer; 11, LED light strip; 12, push plate assembly; 13, through hole; 14, GNSS receiving chip;
[0032] 701, lower partition; 702, upper partition; 703, arc cover; 704, chip mounting seat;
[0033] 1201, round push plate; 1202, spring. DETAILED DESCRIPTION
[0034] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the description of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0035] As shown in Figure 1 and 2 The utility model provides a patient falls alarm device, including upper and lower distribution's upper shell 1 and lower shell 2, upper shell 1 and lower shell 2 can be split between, the top of lower shell 2 is fixed with annular connecting plate 5, upper shell 1 bottom end is provided with the screw groove of accommodating annular connecting plate 5, annular connecting plate 5 is screwed together with the screw groove, by the annular connecting plate 5 is screwed into the screw groove, can the upper shell 1 and lower shell 2 are fixed together, conversely, the annular connecting plate 5 is screwed into the screw groove in the bottom of upper shell 1, can the upper shell 1 and lower shell 2 are disassembled,
[0036] Both sides of upper shell 1 are fixed with bandage 3, the end of two bandage 3 away from upper shell 1 is sewn with magic tape 4, one of magic tape 4 is sewn in the inner side of the end of bandage 3, and the other magic tape 4 is sewn on the outer side of the other bandage 3, by the magic tape 4 of the end of two bandage 3 is bonded together to realize the purpose of binding upper shell 1 and lower shell 2 on the waist side of patient, and simultaneously, the bonding position of two bandage 3 can be adjusted to be suitable for patients with different waist circumference, thereby expanding the application range of the utility model.
[0037] It is known that when the patient falls, he will always go in any direction of backward, forward, left or right. In order to inform the nurse station or the accompanying person in time after the patient falls, a heavy ball 6 is arranged at the bottom end inside the lower shell 2, a channel assembly 7 for limiting the moving path of the heavy ball 6 is arranged inside the upper shell 1 and the lower shell 2, the inside of the upper shell 1 and the lower shell 2 is divided into four channels through the channel assembly 7, a push plate assembly 12 and a light touch switch 8 are arranged at the top end of each channel, and the push plate assembly 12 and the light touch switch 8 are fixed at the top end inside the upper shell 1.
[0038] Specifically, as shown in the drawings, Figures 4-8 The channel assembly 7 in the embodiment comprises a plurality of lower partitions 701 fixed inside the lower shell 2 and a plurality of upper partitions 702 fixed inside the upper shell 1, and the lower partitions 701 and the upper partitions 702 are aligned after the upper shell 1 and the lower shell 2 are closed; an arc-shaped cover 703 is arranged in the middle of the inside of the upper shell 1, and the outer wall of the arc-shaped cover 703 surrounds the upper partitions 702 and the lower partitions 701 to form four channels, and the four channels are located at the front, back, left and right of the patient, respectively.
[0039] A buzzer 10 for issuing a sound alarm is further arranged in the inside of the upper shell 1, and the bottom of the buzzer 10 is provided with an MCU chip 9; the MCU is also called a microcontroller or a single-chip microcomputer, which is a core component integrating a central processing unit (CPU) on a single chip, and reduces the main frequency and specifications, and also integrates a memory, a timer, an analog-to-digital converter (A / D converter), a clock, an input / output port and a serial communication and a plurality of functional modules and interfaces;
[0040] A chip mounting seat 704 is fixed to the bottom end of the inside of the upper shell 1, the buzzer 10 is fixed in the inside of the chip mounting seat 704, the MCU chip 9 is inlaid at the bottom of the chip mounting seat 704, the arc-shaped cover 703 is sleeved on the outer wall of the chip mounting seat 704 and is connected with the chip mounting seat 704 through threads, an LED light strip 11 is inlaid in the inner wall of the front side of the upper shell 1, the heavy ball 6 impacts the push plate assembly 12 and contacts the tactile switch 8 after the patient falls, so that the tactile switch 8 controls the buzzer 10 to issue a sound and controls the LED light strip 11 to issue a red light for alarm, and meanwhile the MCU chip 9 can also send information to the mobile terminal of the nurse station or the accompanying personnel, to tell the nurses and accompanying personnel that the patient has fallen, so as to be treated in time.
[0041] A GNSS receiving chip 14 for positioning can also be arranged in the inside of the upper shell 1, the GNSS receiving chip 14 is a core component for receiving and processing satellite navigation signals, and can realize a positioning, navigation and timing (PNT) function, and the GNSS receiving chip 14 in the utility model is fixed at the bottom of the chip mounting seat 704, as shown in the drawings, so as to send the position information of the patient to the mobile terminal or computer terminal of the medical staff and accompanying personnel when the patient falls, so as to quickly find the fallen patient. Figure 6
[0042] In the embodiment, a plurality of through holes 13 are arranged in the middle of the top of the upper shell 1, the through holes 13 are located directly above the buzzer 10, and the through holes 13 can facilitate the sound emitted by the buzzer 10 to be transmitted outward when the buzzer 10 alarms.
[0043] In the embodiment, the push plate assembly 12 comprises a circular push plate 1201 located between two adjacent upper partitions 702, a spring 1202 fixed on the top of the circular push plate 1201, the top end of the spring 1202 fixed with the inner wall of the upper shell 1, and the tactile switch 8 located on the top of the circular push plate 1201, the spring 1202 sleeved outside the tactile switch 8, and the spring 1202 can support the circular push plate 1201 directly below the tactile switch 8 under the action of the spring force of the spring 1202 itself. When the patient slowly lies down, the weight ball 6 can move to the position in contact with the circular push plate 1201 along one of the channels under the action of gravity, and the gravitational potential energy of the weight ball 6 is slowly reduced in the process, and no impact is generated, so that the weight ball 6 slowly moves along the inner wall of the channel to the position of the circular push plate 1201 and does not impact the circular push plate 1201, thereby not pushing the circular push plate 1201 to contact the tactile switch 8 and not alarming, so as to solve the problem that the traditional fall alarm is easy to misalarm when the patient lies down to rest.
[0044] Conversely, when the patient suddenly falls down, the height of the weight ball 6 suddenly decreases, and the gravitational potential energy of the weight ball 6 suddenly decreases and is converted into kinetic energy, which can generate an impact force to impact the circular push plate 1201, so that the impact force received by the circular push plate 1201 is greater than the elastic force of the spring 1202 applied to the circular push plate 1201, thereby impacting the circular push plate 1201 to contact the tactile switch 8, and then alarming by the MCU chip 9, so as to improve the accuracy of the alarm and reduce the probability of false alarm.
[0045] In addition, it is worth noting that the upper shell 1 and the lower shell 2 in the utility model, and the arc-shaped cover 703 and the chip mounting seat 704 are connected through threads, which are detachable, so as to facilitate disassembly of the utility model for replacement of parts, prolong the service life, and enhance the practicability.
[0046] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model.
Claims
1. A patient fall alarm apparatus, characterized by: It includes upper shell (1) and lower shell (2) distributed upward and downward, the bottom of the buzzer (10) is provided with MCU chip (9) in the upper shell (1) for emitting sound alarm; The bottom end of the lower shell (2) is provided with heavy ball (6), the upper shell (1) and the lower shell (2) are provided with channel assembly (7) for limiting the moving path of heavy ball (6), the upper shell (1) and the lower shell (2) are separated into four channels by channel assembly (7), each channel top is provided with push plate assembly (12) and micro switch (8), the push plate assembly (12) and the micro switch (8) are fixed on the top of the upper shell (1), the heavy ball (6) hits the push plate assembly (12) and the micro switch (8) after the patient falls, the micro switch (8) sends information to the nurse station or the accompanying person through the MCU chip (9), controls the buzzer (10) to emit sound alarm.
2. A patient fall alert device according to claim 1, wherein: The channel assembly (7) includes a plurality of lower partitions (701) fixed in the lower shell (2) and a plurality of upper partitions (702) fixed in the upper shell (1), the lower partitions (701) and the upper partitions (702) are aligned after the upper shell (1) and the lower shell (2) are closed; The middle of the upper shell (1) is provided with arc cover (703), the outer wall of the arc cover (703) surrounds four channels with the upper partition (702) and the lower partition (701), the four channels are located in the front, back, left and right of the patient respectively.
3. A patient fall alert device according to claim 2, wherein: The push plate assembly (12) includes a circular push plate (1201), the circular push plate (1201) is located between two adjacent upper partitions (702), the top of the circular push plate (1201) is fixed with a spring (1202), the top of the spring (1202) is fixed with the inner wall of the upper shell (1); The micro switch (8) is located on the top of the circular push plate (1201), the spring (1202) is sleeved outside the micro switch (8).
4. A patient fall alert device according to claim 2, wherein: The bottom end of the inner wall of the upper shell (1) is fixed with a chip mounting seat (704), the buzzer (10) is fixed in the chip mounting seat (704), the MCU chip (9) is embedded in the bottom of the chip mounting seat (704); The arc cover (703) is sleeved on the outer wall of the chip mounting seat (704) and connected with the chip mounting seat (704) through threads.
5. A patient fall alert device according to claim 4, wherein: The inner wall of the front side of the upper shell (1) is embedded with LED light strip (11), which is controlled by the MCU chip (9) to light up for alarm after the heavy ball (6) hits the push plate assembly (12), the light color of the LED light strip (11) is red; The bottom of the chip mounting seat (704) is provided with GNSS receiving chip (14) for positioning patient position information, the GNSS receiving chip (14) is located on one side of the MCU chip (9).
6. A patient fall alert device according to claim 1, wherein: A plurality of through holes (13) are formed in the middle of the top of the upper shell (1), the through holes (13) are located directly above the buzzer (10).
7. A patient fall alert device according to claim 1, wherein: The two sides of the upper shell (1) are fixed with a bandage (3), the end of the two bandages (3) away from the upper shell (1) is sewn with a magic tape (4).
8. A patient fall alert device according to claim 1, wherein: The lower shell (2) top is fixed with annular connecting plate (5), the upper shell (1) bottom end is provided with containing annular connecting plate (5) thread groove, the annular connecting plate (5) is screwed together with the thread groove.
Citation Information
Patent Citations
Wearable tumble alarm
CN213123280U
Falling alarm
CN215814461U