Off-bed alarm device for high-risk patient falling down from bed

Abstract

The invention discloses a falling-down high-risk patient leaving-bed alarm device which comprises an air bag cushion, a control box, a mounting frame, a warning flash lamp, a power adapter and a wearing bracelet, the air bag cushion is filled with a sponge cushion layer, and a plurality of piezoresistive pressure sensors are arranged at the bottom of an inner cavity of the air bag cushion; according to the scheme, the piezoresistive pressure sensors are distributed according to the approximate shape of a human body, when a patient lies on the side, the pressure intensity borne by the piezoresistive pressure sensors distributed on one side is large at the moment, and when the patient lies above the air bag cushion and the bed, pressure is applied to the air bag cushion, certain deformation is generated, and the sponge cushion layer is squeezed; the pressure is applied to the piezoresistive pressure sensor to assist in judging whether a patient has a getting-up risk, data collection is facilitated, the use comfort of the patient is improved through an air bag of the air bag cushion, and the overall use effect and comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of off-bed monitoring assistance for high-risk patients, and particularly to an off-bed alarm device for high-risk patients of falling out of bed. Background Technique

[0002] Off-bed monitoring for high-risk patients is of crucial importance, aiming to ensure the safety of patients and reduce the risk of accidents. Off-bed risk: High-risk patients are prone to falling and getting injured, sudden changes in their condition, getting lost, catheter detachment or distortion, and other accidents when getting out of bed, which pose a serious threat to the safety of patients. Monitoring technology: Off-bed monitoring technology based on capacitance detection principle is relatively commonly used. By reasonably distributing components such as capacitance sensors and electrodes, and cooperating with a signal processing circuit, the off-bed behavior of patients can be accurately detected. There are many risks when patients get out of bed, such as falling and getting injured, deterioration of the condition, getting lost, abnormal catheters, and other accidents. Related detection components based on capacitance detection are used for off-bed detection.

[0003] Off-bed monitoring for high-risk patients is of crucial importance. It is necessary to monitor the off-bed situation of high-risk patients to ensure the rehabilitation environment of patients and reduce the risk of accidents. In this process, off-bed monitoring is usually adopted. Existing off-bed monitoring mostly uses multiple sensors to be installed on patients or uses hardware for restriction. The use of multiple devices will increase the discomfort of patients. There are problems such as a single monitoring method, low monitoring sensitivity, poor comfort during the monitoring process, inability to adopt different monitoring collocation methods for different risk patients according to actual usage requirements, and if an integrated monitoring hospital bed is purchased for home use by patients or other monitoring places (such as nursing homes and retirement homes, etc.), it will consume more usage funds. Moreover, most of the existing ones cannot improve and upgrade the existing hospital beds. If they are forcibly phased out and replaced, it will also cause a certain amount of resource waste. Based on this, an off-bed alarm device for high-risk patients of falling out of bed is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide an off-bed alarm device for high-risk patients of falling out of bed to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A bed leaving alarm device for patients at high risk of falling and getting out of bed, comprising an airbag pad, a control box, a mounting bracket, a warning flashing lamp, a power adapter and a wearable bracelet. The airbag pad is filled with a sponge cushion layer inside. At the bottom of the inner cavity of the airbag pad, several piezoresistive pressure sensors are provided. Inside the airbag pad, a horizontal sealed suture line is transversely and hermetically stitched, and a vertical sealed suture line is vertically and hermetically stitched. At the bottom of the airbag pad, several friction bumps are fixedly installed. Inside the airbag pad, two air ducts are fixedly installed. On the opposite sides of the two air ducts, several air holes are opened. One end of the airbag pad is communicated with an inflation valve. One end of the airbag pad is fixedly connected with a connecting wire one, and the other end of the connecting wire one is connected to a control box.

[0006] On one side of the mounting bracket, several side mounting holes are opened. On the top of the mounting bracket, several vertical mounting holes are opened. On the top of the mounting bracket, a bed leaving guardrail mechanism is movably installed. The bed leaving guardrail mechanism includes a telescopic inner frame. On the front and back of the telescopic inner frame, sliding grooves are opened. On the outer sides of both ends of the telescopic inner frame, telescopic outer frames are movably sleeved. At both ends of the telescopic outer frame, plugging heads are movably clamped. Inside the telescopic inner frame and the telescopic outer frame, a capacitive detection mechanism is movably installed. The capacitive detection mechanism includes a capacitive sensor and several capacitive detection electrode plates. The output end of the capacitive sensor is connected with a connecting wire two, and the other end of the connecting wire two is electrically connected to an XLR plug.

[0007] Preferably, the piezoresistive pressure sensors are arranged in the airbag pad according to the human body shape, and the distribution positions of the piezoresistive pressure sensors correspond to the distribution positions of the horizontal sealed suture line and the vertical sealed suture line.

[0008] Preferably, the horizontal sealed suture lines are linearly and evenly distributed inside the airbag pad, the vertical sealed suture lines are discontinuously distributed inside the airbag pad, and the friction bumps are linearly and evenly distributed in a rectangle at the bottom of the airbag pad.

[0009] Preferably, the two air guide pipes are symmetrically and fixedly installed inside the airbag pad. The air guide holes are linearly and evenly distributed inside the air guide pipes. The positions of the air guide holes correspond to the positions of the horizontal suture separation lines. The opposite ends of the two air guide pipes are communicated with a communication disk. One end of the communication disk is communicated with a communication pipe. A moving piston is movably sleeved inside the communication pipe. A moving frame is fixedly installed on one side of the moving piston. The moving frame is movably sleeved inside the communication pipe. Two conductive seats are fixedly installed on the side of the moving frame away from the moving piston. A resistance winding is wound around the inner wall of the communication pipe. The outer sides of the two conductive seats are slidably and electrically connected to the inner side of the resistance winding. A flexible spring is fixedly installed on the side of the moving frame away from the moving piston. The other end of the flexible spring is fixedly installed on the inner wall of the communication pipe. One end of the communication pipe is closed.

[0010] Preferably, a push-button unlocking buckle is fixedly installed at the bottom of the telescopic outer frame. The output end of the push-button unlocking buckle is movably installed with a push-button fixing end. Top hinge seats are fixedly installed at the bottoms of the telescopic inner frame and the telescopic outer frame. An air spring telescopic column is hinged at the bottom of the top hinge seat. The push-button fixing end is fixedly sleeved on the outside of the air spring telescopic column. An installation seat is hinged at the bottom of the air spring telescopic column. Installation bolts are movably inserted into the interiors of both ends of the installation seat. Plastic protection sleeves are fixedly installed at the opposite ends of the telescopic outer frame. The plastic protection sleeves are movably sleeved on the outside of the telescopic inner frame. Capacitance detection electrode plates are linearly and evenly distributed on the inner walls of the telescopic outer frame and the telescopic inner frame. The specification sizes of the capacitance detection electrode plates are adapted to the specification sizes of the sliding grooves. The connection ends of the capacitance detection electrode plates are connected to the measurement ends of the capacitance sensors through wires. Pin holes are formed in the opposite ends of the telescopic outer frame and the interiors of the telescopic inner frame.

[0011] Preferably, the vertical installation holes and the side installation holes are linearly and evenly distributed inside the installation frame, and the number of the vertical installation holes and the number of the side installation holes are in a linear multiple relationship. The specification size of the installation bolt is adapted to the specification size of the vertical installation hole. The installation frame is L-shaped.

[0012] Preferably, two clamps are fixedly installed at the bottom of the control box. Rubber pads are fixedly installed on the inner sides of the two clamps. A radiator is movably installed inside one side of the control box through an installation support frame. A dust-proof net is arranged on the outer side of the radiator. The dust-proof net is fixed to the outer side of the control box by screws. A warning speaker is installed on one side of the control box. A power jack one is installed on one side of the control box. An XLR interface is installed on one side of the control box. The XLR interface, the power jack one, the warning speaker, and the dust-proof net are symmetrically and evenly distributed in a rectangle on the outer side of the control box. A display screen is movably installed on the top of the control box. A number of warning lights are fixedly installed on the top of the control box. A number of buttons are movably installed on the top of the control box. The warning lights and the buttons are linearly and evenly distributed on the top of the control box. A main power module is fixedly installed at the bottom of the inner cavity of the control box. The output end of the power jack one is electrically connected to the input end of the main power module through a wire. Four flexible shock-absorbing brackets are fixedly installed at the bottom of the inner cavity of the control box. A circuit board is installed on the tops of the four flexible shock-absorbing brackets.

[0013] Preferably, a signal processing circuit module is integrally installed on the top of the circuit board. The signal processing circuit module includes an amplifier, a filter, and an analog-to-digital converter for processing the electrical signals sent by the capacitive detection mechanism. The specification size of the XLR plug is adapted to the specification size of the XLR interface. The output end of the XLR interface is electrically connected to the input end of the signal processing circuit module. A microcontroller module is integrally installed on the top of the circuit board. A data processing module is integrally installed on the top of the circuit board. A data storage module is integrally installed on the top of the circuit board. A Bluetooth connection module is integrally installed on the top of the circuit board. A Wi-Fi connection module is integrally installed on the top of the circuit board.

[0014] Preferably, label slots are arranged on both the front and back of the warning flash lamp. An adhesive tape is fixedly installed at the bottom of the warning flash lamp. Two magnetic clasps are fixedly installed at the bottom of the warning flash lamp. A power jack two is installed on the front of the warning flash lamp. The interior of the warning flash lamp includes a Bluetooth communication module and a power module. The output end of the power adapter is connected with a power plug. The specification size of the power plug is adapted to the specification sizes of the power jack two and the power jack one.

[0015] Preferably, watchbands are movably installed at both ends of the wearable bracelet. A number of auxiliary operation keys are movably installed on one side of the wearable bracelet. A main operation key is movably installed on the other side of the wearable bracelet. A charging port is arranged on one side of the wearable bracelet. A photoelectric sensor module is installed at the bottom of the wearable bracelet.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the device is in use, the user lays the airbag pad on the bed, fixes the control box at the bed leg, then externally connects the power adapter to the power supply to supply power to the control box, selects the operation mode and then uses it, wears the bracelet on the patient's arm, and then plugs the other power adapter into the warning flashing lamp for power supply, and places the warning flashing lamp at the nurse's desk or the outer wall observation point. During use, the control box is paired and connected with the bracelet and the warning flashing lamp through Bluetooth. Before that, the mounting bracket is installed on the side of the bed through bolts and adjusted according to the required width. After being fixed by the lock and pin, the out-of-bed guardrail mechanism and the mounting bracket form a guardrail on the side of the bed, reducing the risk of falling from the traditional bed. When in use, the airbag pad is subjected to the lying pressure of the patient, and the piezoresistive pressure sensors distributed at multiple points inside assist in determining the lying postures of different patients according to the detected and feedback pressure, thereby reducing risks, being able to transform the traditional bed, reducing the use of funds, and being able to be used in different family and nursing and other monitoring scenarios;

[0017] 2. The distribution of the piezoresistive pressure sensors in this solution is in the general shape of the human body. When the patient lies on their side, the piezoresistive pressure sensors distributed on one side are subjected to greater pressure at this time. The patient lies on the airbag pad and above the bed, applies pressure to the airbag pad and causes a certain deformation, and squeezes the sponge cushion layer, prompting the pressure to be applied to the piezoresistive pressure sensors, assisting in determining the risk of the patient getting up, facilitating data collection, and improving the comfort of the patient using the airbag pad, increasing the overall use effect and comfort;

[0018] 3. When installing the present invention on a traditional bed, holes are drilled through the bedside, the mounting bracket is attached to the bedside, and the mounting bracket is fixed by inserting screws through the vertical mounting holes and side mounting holes. The setting of the gas spring telescopic column is to buffer the patient's hand support. For example, when the patient's arm is placed on the top of the telescopic outer frame and telescopic inner frame, at this time, the gas spring telescopic column is stressed and slowly moves down, buffering the force, reducing the rigidity of the telescopic outer frame and telescopic inner frame on the arm, and extending the contact time between the patient's arm and the telescopic outer frame and telescopic inner frame during buffering, which is beneficial to the capacitance detection and confirmation of the capacitance detection electrode sheet and the capacitance sensor, and is beneficial to protecting the patient's reaction time and notification time during this buffer, thereby assisting in reducing the risk of getting out of bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view three-dimensional external structure schematic diagram of the airbag pad of the present invention.

[0020] Figure 2 It is a rear view and upward view three-dimensional external structure schematic diagram of the airbag pad of the present invention.

[0021] Figure 3 It is a front view three-dimensional external structure schematic diagram of the out-of-bed guardrail mechanism of the present invention.

[0022] Figure 4 This is a schematic diagram of the rear view and upward perspective three-dimensional external structure of the out-of-bed guardrail mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the front view sectional internal structure of the airbag cushion of the present invention.

[0024] Figure 6 This is a schematic diagram of the internal structure of the airbag cushion in top view sectional view with the sponge cushion layer hidden of the present invention.

[0025] Figure 7 This is a schematic diagram of the front view sectional internal structure of the out-of-bed guardrail mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the front view and upward perspective three-dimensional external structure of the warning flashing lamp of the present invention.

[0027] Figure 9 This is a schematic diagram of the front view and upward perspective three-dimensional external structure of the power adapter of the present invention.

[0028] Figure 10 This is a schematic diagram of the front view and upward perspective three-dimensional external structure of the wearable bracelet of the present invention.

[0029] Figure 11 This is the present invention Figure 1 The enlarged structure diagram at position A in.

[0030] Figure 12 This is the present invention Figure 2 The enlarged structure diagram at position B in.

[0031] Figure 13 This is the present invention Figure 5 The enlarged structure diagram at position C in.

[0032] Figure 14 This is a schematic diagram of the internal structure of the control box of the present invention in top view.

[0033] Figure 15 This is the present invention Figure 6 The enlarged structure diagram at position D in.

[0034] In the figure: 1. airbag cushion; 101. friction bump; 102. inflation valve; 103. horizontal stitching separation line; 104. vertical stitching separation line; 105. sponge cushion layer; 106. piezoresistive pressure sensor; 107. air duct; 108. air vent; 109. connection disc; 110. connecting pipe; 111. moving piston; 112. moving frame; 113. resistance winding; 114. conductive seat; 115. flexible spring; 2. control box; 201. first connecting wire; 202. first power jack; 203. XLR interface; 204. clamp; 205. rubber pad; 206. warning light; 207. button; 208. display screen; 209. warning loudspeaker; 210. dustproof net; 211. flexible shock-absorbing bracket; 212. circuit board; 213. radiator; 214. main power module; 215. microcontroller module; 216. signal processing circuit module; 217. data processing module; 218. data storage module; 219. Bluetooth connection module; 220. Wi-Fi connection module; 3. mounting bracket; 301. vertical mounting hole; 302. side mounting hole; 4. out-of-bed guardrail mechanism; 401. gas spring telescopic column; 402. mounting seat; 403. mounting bolt; 404. top hinge seat; 405. telescopic outer frame; 406. telescopic inner frame; 407. plastic protective sleeve; 408. sliding groove; 409. push-type unlocking buckle; 410. fixed end of the push button; 411. plugging head; 5. capacitive detection mechanism; 501. capacitive sensor; 502. second connecting wire; 503. XLR plug; 504. capacitive detection electrode plate; 6. warning flashing lamp; 601. label slot; 602. adhesive; 603. magnet buckle; 604. second power jack; 7. power adapter; 701. power plug; 8. wearable bracelet; 801. watchband; 802. photoelectric sensor module; 803. charging port; 804. main operation key; 805. auxiliary operation key. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1 - 15, the present invention provides a technical solution: a bed leaving alarm device for patients at high risk of falling and getting out of bed, including an airbag pad 1, a control box 2, a mounting bracket 3, a warning flashing lamp 6, a power adapter 7 and a wearable bracelet 8. The inside of the airbag pad 1 is filled with a sponge cushion layer 105. At the bottom of the inner cavity of the airbag pad 1, a number of piezoresistive pressure sensors 106 are provided. Horizontally sealed sutures 103 are sewn inside the airbag pad 1, and vertically sealed sutures 104 are sewn inside the airbag pad 1. A number of friction bumps 101 are fixedly installed at the bottom of the airbag pad 1. Two air ducts 107 are fixedly installed inside the airbag pad 1. A number of air guide holes 108 are opened on the opposite sides of the two air ducts 107. One end of the airbag pad 1 is communicated with an inflation valve 102. One end of the airbag pad 1 is fixedly connected with a first connecting wire 201, and the other end of the first connecting wire 201 is connected to the control box 2.

[0037] A number of side mounting holes 302 are opened on one side of the mounting bracket 3, and a number of vertical mounting holes 301 are opened on the top of the mounting bracket 3. A bed leaving guardrail mechanism 4 is movably installed on the top of the mounting bracket 3. The bed leaving guardrail mechanism 4 includes a telescopic inner frame 406. Sliding grooves 408 are opened on the front and back of the telescopic inner frame 406. Telescopic outer frames 405 are movably sleeved on the outer sides of both ends of the telescopic inner frame 406. Plugging heads 411 are movably clamped at both ends of the telescopic outer frame 405. A capacitive detection mechanism 5 is movably installed inside the telescopic inner frame 406 and the telescopic outer frame 405. The capacitive detection mechanism 5 includes a capacitive sensor 501 and a number of capacitive detection electrode plates 504. The output end of the capacitive sensor 501 is connected with a second connecting wire 502, and the other end of the second connecting wire 502 is electrically connected to an XLR plug 503.

[0038] Working principle of the above technical solution: When in use, the user lays the airbag pad 1 on the bed, fixes the control box 2 at the bed leg, then externally connects the power adapter 7 to the power supply to supply power to the control box 2, selects the operation mode and then uses it, wears the bracelet 8 on the patient's arm, and then plugs the other power adapter 7 into the warning flashing light 6 to supply power, and places the warning flashing light 6 at the nurse's desk or the outer wall observation point. When in use, the control box 2 is paired and connected with the bracelet 8 and the warning flashing light 6 through Bluetooth. Before that, the mounting bracket 3 is installed on the side of the bed through bolts, and the lengths of the telescopic outer frame 405 and the telescopic inner frame 406 are stretched according to the required width, and then the corresponding mounting seat 402 is inserted into the bolt to install the gas spring telescopic column 401 on the top of the mounting bracket 3. After being fixed by the lock and pin, the out-of-bed guardrail mechanism 4 and the mounting bracket 3 form a guardrail on the side of the bed, reducing the risk of falling from a traditional bed. When in use, the airbag pad 1 is subjected to the lying pressure of the patient, and the piezoresistive pressure sensors 106 distributed at multiple points inside detect and feedback the pressure to assist in determining the lying postures of different patients. If the overall pressure of the piezoresistive pressure sensors 106 decreases and the capacitive detection mechanism 5 feedbacks capacitive touch, it can be indirectly determined that the patient has a risk of getting out of bed. At this time, notifications are sent through the warning flashing light 6, the bracelet 8 and the control box 2, thus reducing the risk. It can transform the traditional bed, reduce the capital use, and can be used in different family and nursing and other monitoring scenarios.

[0039] In another embodiment, as Figures 1 - 6 shown, the piezoresistive pressure sensors 106 are arranged inside the airbag pad 1 according to the human body form, and the distribution positions of the piezoresistive pressure sensors 106 correspond to the distribution positions of the horizontal suture separation line 103 and the vertical suture separation line 104. The horizontal suture separation line 103 is linearly and evenly distributed inside the airbag pad 1, the vertical suture separation line 104 is discontinuously distributed inside the airbag pad 1, and the friction bumps 101 are rectangularly and linearly evenly distributed at the bottom of the airbag pad 1.

[0040] The piezoresistive pressure sensors 106 are distributed in the approximate shape of the human body. For example, the symmetrical parts are at the legs and arms, the middle part is the torso, and the vertex is the head. When the patient lies on their side, the piezoresistive pressure sensors 106 distributed on one side are under greater pressure at this time. The patient lies on the airbag pad 1 and above the bed, applying pressure to the airbag pad 1 and causing certain deformation, as well as squeezing the sponge cushion layer 105, so that the pressure is applied to the piezoresistive pressure sensors 106. According to the different data of the piezoresistive pressure sensors 106 and calculating the total pressure, the lying posture of the patient is assisted to be determined. If the pressure is significantly less than the pressure when the patient lies flat completely and there are piezoresistive pressure sensors 106 with relatively large feedback pressure data locally, it can be determined at this time that the patient has a risk of getting up, which is convenient for data collection. The airbags of the airbag pad 1 improve the comfort of the patient's use, increasing the overall use effect and comfort. The sponge cushion layer 105 improves the softness: the sponge is soft in texture and can buffer the human body pressure. Matched with the airbag, it can make the contact part feel softer and reduce the stiffness, and improve the fit: the sponge can deform according to the human body curve and closely fit the body.

[0041] In another embodiment, as Figures 1 - 6 and Figure 15 shown, two air ducts 107 are symmetrically and fixedly installed inside the airbag pad 1. The air holes 108 are linearly and evenly distributed inside the air ducts 107. The positions of the air holes 108 correspond to the positions of the horizontal sewing separation lines 103. The opposite ends of the two air ducts 107 are connected to a connecting plate 109. One end of the connecting plate 109 is connected to a connecting pipe 110. A movable piston 111 is movably sleeved inside the connecting pipe 110. A movable frame 112 is fixedly installed on one side of the movable piston 111. The movable frame 112 is movably sleeved inside the connecting pipe 110. Two conductive seats 114 are fixedly installed on the side of the movable frame 112 away from the movable piston 111. A resistance winding 113 is wound around the inner wall of the connecting pipe 110. The outer sides of the two conductive seats 114 are slidably and electrically connected to the inner side of the resistance winding 113. A flexible spring 115 is fixedly installed on the side of the movable frame 112 away from the movable piston 111. The other end of the flexible spring 115 is fixedly installed on the inner wall of the connecting pipe 110. One end of the connecting pipe 110 is closed.

[0042] Since the airbag pad 1 is a sealed airbag structure, and the inside of the airbag pad 1 is partitioned by the horizontal sewing separation line 103 and the vertical sewing separation line 104, the deformation of the airbag is restricted, the overall structural strength is increased, and the piezoresistive pressure sensor 106 is separated, which facilitates subsequent product specifications to partition the airbag and detect it through the piezoresistive pressure sensor 106 in the partition. The inflation output pipe of the inflation valve 102 extends to the closed inside of the horizontal sewing separation line 103. The current detection is to measure the pressure data of different parts inside the airbag pad 1 through the piezoresistive pressure sensor 106, and the airbag pad 1 and the sponge cushion layer 105 move downward under the human pressure and contact the piezoresistive pressure sensor 106. According to different data, when the airbag pad 1 is pressed, the air pressure is evenly distributed and the air pressure is communicated to the communication disc 109 through the diversion of the air guide hole 108 and the air guide pipe 107, and applied to the moving piston 111. At this time, the internal pressure of the communication pipe 110 on one side of the moving piston 111 is the same as the pressure during assembly, and the moving piston 111 is deformed and pressurized by the airbag of the airbag pad 1, prompting the moving piston 111 to move toward the communication pipe 110 side, and then pushing the moving frame 112 to move, so that the conductive seat 114 changes the change of the detection current when contacting the resistance winding 113. The connection terminals of the resistance winding 113 and the conductive seat 114 are connected to the microcontroller inside the control box 2 through the connecting wire 1 201, so that the detection current is output and sent out through the conductive seat 114, and the detection current returns to the detection measurement end under the sliding variable resistance principle of the resistance winding 113, so as to determine the data. Since the inside of the communication pipe 110 is sealed and the moving distance of the moving piston 111 is limited, the farther the conductive seat 114 slides with the resistance winding 113, the greater the pressure represented by the numerical change feedback. This scheme is to feedback the measurement data of the piezoresistive pressure sensor 106 after the airbag pad 1 is completely pressed, combined with the total pressure, and then combined with the data and then matched with the feedback to assist in improving the accuracy of the patient's bedridden analysis.

[0043] In another embodiment, such as Figures 3 - 7As shown in the figure, a push-button unlocking buckle 409 is fixedly installed at the bottom of the telescopic outer frame 405. A push-button fixing end 410 is movably installed at the output end of the push-button unlocking buckle 409. Top hinge seats 404 are fixedly installed at the bottoms of the telescopic inner frame 406 and the telescopic outer frame 405. An air spring telescopic column 401 is hinged to the bottom of the top hinge seat 404. The push-button fixing end 410 is fixedly sleeved on the outside of the air spring telescopic column 401. The bottom of the air spring telescopic column 401 is hinged to a mounting seat 402. Mounting bolts 403 are movably inserted into the interiors of both ends of the mounting seat 402. Plastic protective sleeves 407 are fixedly installed at the opposite ends of the telescopic outer frame 405. The plastic protective sleeves 407 are movably sleeved on the outside of the telescopic inner frame 406. Capacitive detection electrode plates 504 are linearly and evenly distributed on the inner walls of the telescopic outer frame 405 and the telescopic inner frame 406. The specification dimensions of the capacitive detection electrode plates 504 are adapted to the specification dimensions of the sliding grooves 408. The connection ends of the capacitive detection electrode plates 504 are connected to the measurement ends of a capacitive sensor 501 through wires. Pin holes are provided in the interiors of the opposite ends of the telescopic outer frame 405 and the telescopic inner frame 406.

[0044] When retrofitting a traditional bed, holes are drilled through the bedside, the mounting frame 3 is fitted to the bedside, and screws are inserted through the vertical mounting holes 301 and the side mounting holes 302 to fix the mounting frame 3. The off-bed guardrail mechanism 4 is fixed by inserting the mounting base 402 and the mounting bolts 403 into the vertical mounting holes 301 for sliding adjustment according to the required size. Then, the sleeved length of the telescopic inner frame 406 and the telescopic outer frame 405 is adjusted accordingly, and the lengths of the telescopic outer frame 405 and the telescopic inner frame 406 are fixed by inserting pins into the mating pin holes. When the gas spring telescopic column 401 is erected, it is fixed by the push-type unlocking buckle 409 and the push buckle fixed end 410. The gas spring telescopic column 401 is provided to buffer the action of the patient's hand support. For example, when the patient's arm is placed on the top of the telescopic outer frame 405 and the telescopic inner frame 406, the gas spring telescopic column 401 is slowly lowered under the force, buffering the force, reducing the rigidity of the telescopic outer frame 405 and the telescopic inner frame 406 against the arm, and prolonging the contact time between the patient's arm and the telescopic outer frame 405 and the telescopic inner frame 406 during buffering, which is beneficial to the capacitance detection and confirmation of the capacitance detection electrode sheet 504 and the capacitance sensor 501, and is beneficial to protecting the patient's reaction time and notification time during this buffering, thereby assisting in reducing the risk of getting out of bed. When in use, the XLR plug 503 is inserted into the XLR interface 203 for device connection, facilitating use. On the vertical side frames on both sides of the off-bed guardrail, multiple capacitance sensors and electrodes are evenly distributed. The electrodes are in strip shape and arranged along the length direction of the frame to increase the detection area and sensitivity, so as to detect the approaching or contacting actions of the patient on the side of the guardrail. On the top crossbar of the guardrail, a row of capacitance sensors and electrodes are also installed to increase the sensitivity. These electrodes can be designed in a circular or segmented form, surrounding the crossbar, for detecting the action of the patient climbing over the guardrail from above. For the off-bed guardrail with adjustable height, capacitance sensors should also be installed near the lifting mechanism of the guardrail to detect the interaction between the patient and the guardrail when the height of the guardrail changes.

[0045] In another embodiment, as Figures 3 - 7 shown, the vertical mounting holes 301 and the side mounting holes 302 are linearly and evenly distributed inside the mounting frame 3, and the number of the vertical mounting holes 301 and the number of the side mounting holes 302 are in a linear multiple relationship. The specification size of the mounting bolts 403 is adapted to the specification size of the vertical mounting holes 301, and the mounting frame 3 is in an L shape.

[0046] The quantity distribution of the vertical mounting holes 301 and the side mounting holes 302 facilitates the insertion of bolts to fix the mounting frame 3 around the bed, and the vertical mounting holes 301 also play a role in positioning the mounting bolts 403. Therefore, setting a large number is convenient for installation and position adjustment, thereby assisting in determining the installation position, facilitating installation on a traditional bed, being able to adapt to most beds for use, and increasing the convenience of use.

[0047] In another embodiment, as Figures 1 - 14 shown, two clamps 204 are fixedly installed at the bottom of the control box 2, rubber pads 205 are fixedly installed on the inner sides of the two clamps 204, a radiator 213 is movably installed inside one side of the control box 2 through a mounting support frame, a dust-proof net 210 is arranged on the outer side of the radiator 213, the dust-proof net 210 is fixed to the outer side of the control box 2 by screws, a warning loudspeaker 209 is installed on one side of the control box 2, a power jack 202 is installed on one side of the control box 2, an XLR interface 203 is installed on one side of the control box 2, the XLR interface 203, the power jack 202, the warning loudspeaker 209 and the dust-proof net 210 are symmetrically and evenly distributed in a rectangle on the outer side of the control box 2, a display screen 208 is movably installed on the top of the control box 2, a plurality of warning lights 206 are fixedly installed on the top of the control box 2, a plurality of buttons 207 are movably installed on the top of the control box 2, the warning lights 206 and the buttons 207 are linearly and evenly distributed on the top of the control box 2, a main power module 214 is fixedly installed at the bottom of the inner cavity of the control box 2, and the output end of the power jack 202 is electrically connected to the input end of the main power module 214 through a wire. Four flexible shock-absorbing brackets 211 are fixedly installed at the bottom of the inner cavity of the control box 2, and a circuit board 212 is installed on the top of the four flexible shock-absorbing brackets 211.

[0048] When installing, open the clamp 204 and sleeved it on the bed leg, increase the friction with the installation position through the rubber pad 205, and close the clamp 204 to make the component installation stable, which is convenient to install the device at the use position, and is combined and installed at the bedside through the mounting frame 3 and the off-bed guardrail mechanism 4. Insert the XLR plug 503 into the XLR interface 203, and insert the power plug 701 into the power jack 202, so as to stably install and use the structure, and it can be used in scenarios such as home care, nursing care, and medical institution care, thus being convenient to use. The warning light 206 gives a flashing prompt, the button 207 is convenient for operation, the display screen 208 displays video information, the warning loudspeaker 209 is convenient for giving warnings and prompt sounds, the dust-proof net 210 reduces dust intrusion and cooperates with the radiator 213 to assist in cooling the internal electronic components, the flexible shock-absorbing brackets 211 install the circuit board 212 and reduce vibration conduction to increase the service life of the structure, and the whole is convenient to use.

[0049] In another embodiment, as Figures 1 - 14As shown in the figure, a signal processing circuit module 216 is integrally installed on the top of the circuit board 212. The signal processing circuit module 216 includes an amplifier, a filter, and an analog-to-digital converter for processing the electrical signals sent by the capacitive detection mechanism 5. The specification dimensions of the XLR plug 503 are adapted to those of the XLR interface 203. The output end of the XLR interface 203 is electrically connected to the input end of the signal processing circuit module 216. A microcontroller module 215 is integrally installed on the top of the circuit board 212. A data processing module 217 is integrally installed on the top of the circuit board 212. A data storage module 218 is integrally installed on the top of the circuit board 212. A Bluetooth connection module 219 is integrally installed on the top of the circuit board 212. A Wi-Fi connection module 220 is integrally installed on the top of the circuit board 212.

[0050] The capacitance detection data of the capacitive detection mechanism 5 is transmitted to the signal processing circuit module 216 through the connecting wire two 502 and the XLR plug 503 via the XLR interface 203. This is the core component for detecting capacitance changes. Its size, shape, and capacitance value range are determined according to actual requirements. Electrodes: Cooperate with the capacitive sensor to form a capacitance detection loop. Signal processing circuit: Used to amplify, filter, and perform analog-to-digital conversion on the weak electrical signals detected by the capacitive sensor for subsequent analysis and judgment by the microcontroller. Microcontroller: Analyze and process the processed signals to determine whether the patient has a bed leaving action. According to the preset threshold and algorithm, identify the capacitance change pattern and send out corresponding control signals. Record the data through the data storage module 218 for subsequent reference and retrieval, and connect to the warning flash lamp 6 and the wearable bracelet 8 through the Bluetooth connection module 219 for Bluetooth communication. Perform Bluetooth ranging through the connection of the wearable bracelet 8 to detect the bed leaving distance of low-risk patients within the Bluetooth range. For example, when the patient goes to the toilet, multi-range warnings can be given for high-risk and low-risk patients when they leave the bed and move away. The Wi-Fi connection module 220 facilitates the addition of networking capabilities. By developing an APP port later to view the patient's bed leaving records and data records, it is convenient for the subsequent product stability. The warning speaker 209 is used to emit a warning sound during bed leaving warnings. The warning light 206 flashes to indicate that a bed leaving detection warning has occurred at this bed position. The main power supply module 214 powers the internal electronic components to ensure normal use. The microcontroller module 215 has a built-in programming algorithm to ensure the subsequent bed leaving detection use based on the collected data and the control of electronic components. Together with the subsequent algorithms and systems, it provides basic hardware support for bed leaving warnings.

[0051] In another embodiment, such as Figure 8 and Figure 9As shown, label slots 601 are provided on both the front and back of the warning flashing lamp 6. An adhesive 602 is fixedly installed at the bottom of the warning flashing lamp 6. Two magnetic buckles 603 are fixedly installed at the bottom of the warning flashing lamp 6. A second power socket 604 is installed on the front of the warning flashing lamp 6. The interior of the warning flashing lamp 6 includes a Bluetooth communication module and a power module. The output end of the power adapter 7 is connected to a power plug 701. The specification size of the power plug 701 is adapted to the specification sizes of the second power socket 604 and the first power socket 202.

[0052] The label slots 601 facilitate pasting label information for easy observation of the early warning patient information. The warning flashing lamp 6 is a flash lamp with a built-in Bluetooth communication module and a power module. When receiving information from the Bluetooth communication module, the warning flashing lamp 6 flashes red and blue lights for reminder. The adhesive 602 facilitates pasting at the usage position, and cooperates with the magnetic buckles 603 to adsorb on an iron platform, facilitating cooperation with different usage positions for combined pasting and placement. The second power socket 604 facilitates inserting the power plug 701 for power supply and convenient use.

[0053] In another embodiment, as Figure 10 shown, both ends of the wearable bracelet 8 are movably installed with watch straps 801. A number of auxiliary operation keys 805 are movably installed on one side of the wearable bracelet 8. A main operation key 804 is movably installed on the other side of the wearable bracelet 8. A charging port 803 is provided on one side of the wearable bracelet 8. A photoelectric sensor module 802 is installed at the bottom of the wearable bracelet 8.

[0054] Inside the wearable bracelet 8, an acceleration sensor, a Bluetooth communication module and a power module are additionally installed on the basis of its basic functions, which are used for Bluetooth ranging and receiving notification messages. By wearing it on the arm of the caregiver or the monitored patient, different functions can be realized. And the acceleration sensor is used to record the approximate movement of the patient's arm, and the Bluetooth communication module is used to determine the approximate distance from the warning speaker 209 and thus approximately determine the location of the control box 2 on the bed. The photoelectric sensor module 802 detects the wearing of the patient and can add functions such as heart rate monitoring under additional functions, which is used to cooperate with the ability to increase various monitors for convenient combined use. If worn by the caregiver, it can additionally provide notification information. If worn by a low-risk patient, it can increase the monitoring data, further improving the accuracy of the out-of-bed monitoring.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bed leaving alarm device for patients at high risk of falling and getting out of bed, comprising an airbag pad (1), a control box (2), a mounting bracket (3), a warning flashing lamp (6), a power adapter (7) and a wearable bracelet (8), characterized in that: The interior of the airbag pad (1) is filled with a sponge cushion layer (105). At the bottom of the inner cavity of the airbag pad (1), a number of piezoresistive pressure sensors (106) are provided. Horizontally sealed and stitched separation lines (103) are internally provided in the airbag pad (1). Vertically sealed and stitched separation lines (104) are internally provided in the airbag pad (1). A number of friction bumps (101) are fixedly installed at the bottom of the airbag pad (1). Two air ducts (107) are fixedly installed inside the airbag pad (1). A number of air guide holes (108) are provided on the opposite sides of the two air ducts (107). One end of the airbag pad (1) is communicated with an inflation valve (102). One end of the airbag pad (1) is fixedly connected with a first connection wire (201). The other end of the first connection wire (201) is connected to a control box (2). A number of side mounting holes (302) are provided on one side of the mounting frame (3). A number of vertical mounting holes (301) are provided at the top of the mounting frame (3). A bed leaving guardrail mechanism (4) is movably installed at the top of the mounting frame (3). The bed leaving guardrail mechanism (4) includes a telescopic inner frame (406). Sliding grooves (408) are provided on the front and back of the telescopic inner frame (406). Telescopic outer frames (405) are movably sleeved on the outer sides of both ends of the telescopic inner frame (406). Plugging heads (411) are movably clamped at both ends of the telescopic outer frames (405). A capacitive detection mechanism (5) is movably installed inside the telescopic inner frame (406) and the telescopic outer frames (405). The capacitive detection mechanism (5) includes a capacitive sensor (501) and a number of capacitive detection electrode plates (504). The output end of the capacitive sensor (501) is connected to a second connection wire (502). The other end of the second connection wire (502) is electrically connected to an XLR plug (503).

2. The bed exit alarm device for high-risk patients of falling and falling out of bed according to claim 1, characterized in that: The piezoresistive pressure sensors (106) are arranged in the airbag pad (1) according to the human body shape, and the distribution positions of the piezoresistive pressure sensors (106) correspond to the distribution positions of the horizontal stitched separation lines (103) and the vertical stitched separation lines (104).

3. The bed leaving alarm device for high-risk patients of falling and tumbling out of bed according to claim 1, characterized in that: The horizontal stitched separation lines (103) are linearly and evenly distributed inside the airbag pad (1). The vertical stitched separation lines (104) are discontinuously distributed inside the airbag pad (1). The friction bumps (101) are rectangularly and linearly evenly distributed at the bottom of the airbag pad (1).

4. The bed leaving alarm device for patients at high risk of falling or getting out of bed according to claim 1, characterized in that: Two of the air ducts (107) are symmetrically and fixedly installed inside the airbag cushion (1). The air guide holes (108) are linearly and evenly distributed inside the air duct (107). The positions of the air guide holes (108) correspond to the positions of the horizontal stitching separation lines (103). The opposite ends of the two air ducts (107) are communicated with a connecting disk (109). One end of the connecting disk (109) is communicated with a connecting pipe (110). A moving piston (111) is movably sleeved inside the connecting pipe (110). One side of the moving piston (111) is fixedly installed with a moving frame (112). The moving frame (112) is movably sleeved inside the connecting pipe (110). Two conductive seats (114) are fixedly installed on the side of the moving frame (112) away from the moving piston (111). A resistance winding (113) is wound around the inner wall of the connecting pipe (110). The outer sides of the two conductive seats (114) are slidably and electrically connected to the inner side of the resistance winding (113). A flexible spring (115) is fixedly installed on the side of the moving frame (112) away from the moving piston (111). The other end of the flexible spring (115) is fixedly installed on the inner wall of the connecting pipe (110). One end of the connecting pipe (110) is closed.

5. The bed leaving alarm device for high-risk patients of falling and dropping out of bed according to claim 1, characterized in that: A push-button unlocking buckle (409) is fixedly installed at the bottom of the telescopic outer frame (405). The output end of the push-button unlocking buckle (409) is movably installed with a push-button fixing end (410). Top hinge seats (404) are fixedly installed at the bottoms of the telescopic inner frame (406) and the telescopic outer frame (405). An air spring telescopic column (401) is hinged to the bottom of the top hinge seat (404). The push-button fixing end (410) is fixedly sleeved on the outer side of the air spring telescopic column (401). The bottom of the air spring telescopic column (401) is hinged to a mounting seat (402). Mounting bolts (403) are movably inserted into the interiors of both ends of the mounting seat (402). Plastic protection sleeves (407) are fixedly installed at the opposite ends of the telescopic outer frame (405). The plastic protection sleeves (407) are movably sleeved on the outer side of the telescopic inner frame (406). Capacitive detection electrode plates (504) are linearly and evenly distributed on the inner walls of the telescopic outer frame (405) and the telescopic inner frame (406). The specification sizes of the capacitive detection electrode plates (504) are adapted to the specification sizes of the sliding grooves (408). The connection ends of the capacitive detection electrode plates (504) are connected to the measurement ends of a capacitive sensor (501) through wires. Pin holes are formed in the interiors of the opposite ends of the telescopic outer frame (405) and the telescopic inner frame (406).

6. The bed leaving alarm device for high-risk patients of falling and getting out of bed according to claim 5, characterized in that: The vertical mounting holes (301) and the side mounting holes (302) are linearly and evenly distributed inside the mounting frame (3), and the number of the vertical mounting holes (301) and the number of the side mounting holes (302) are in a linear multiple relationship. The specification size of the mounting bolt (403) is adapted to the specification size of the vertical mounting hole (301). The mounting frame (3) is L-shaped.

7. The bed leaving alarm device for high-risk patients of falling or getting out of bed according to claim 1, characterized in that: Two clamps (204) are fixedly installed at the bottom of the control box (2). Rubber pads (205) are fixedly installed on the inner sides of the two clamps (204). A radiator (213) is movably installed inside one side of the control box (2) through an installation support frame. A dust-proof net (210) is arranged on the outer side of the radiator (213). The dust-proof net (210) is fixed to the outer side of the control box (2) by screws. An alarm speaker (209) is installed on one side of the control box (2). A power socket one (202) is installed on one side of the control box (2). An XLR interface (203) is installed on one side of the control box (2). The XLR interface (203), the power socket one (202), the alarm speaker (209), and the dust-proof net (210) are symmetrically and evenly distributed in a rectangle on the outer side of the control box (2). A display screen (208) is movably installed on the top of the control box (2). A plurality of warning lights (206) are fixedly installed on the top of the control box (2). A plurality of buttons (207) are movably installed on the top of the control box (2). The warning lights (206) and the buttons (207) are linearly and evenly distributed on the top of the control box (2). A main power module (214) is fixedly installed at the bottom of the inner cavity of the control box (2). The output end of the power socket one (202) is electrically connected to the input end of the main power module (214) through a wire. Four flexible shock-absorbing brackets (211) are fixedly installed at the bottom of the inner cavity of the control box (2). A circuit board (212) is installed on the tops of the four flexible shock-absorbing brackets (211).

8. The bed leaving alarm device for high-risk patients of falling and falling out of bed according to claim 7, characterized in that: A signal processing circuit module (216) is integrally installed on the top of the circuit board (212). The signal processing circuit module (216) includes an amplifier, a filter, and an analog-to-digital converter for processing the electrical signals sent by the capacitive detection mechanism (5). The specification size of the XLR plug (503) is adapted to the specification size of the XLR interface (203). The output end of the XLR interface (203) is electrically connected to the input end of the signal processing circuit module (216). A microcontroller module (215) is integrally installed on the top of the circuit board (212). A data processing module (217) is integrally installed on the top of the circuit board (212). A data storage module (218) is integrally installed on the top of the circuit board (212). A Bluetooth connection module (219) is integrally installed on the top of the circuit board (212). A Wi-Fi connection module (220) is integrally installed on the top of the circuit board (212).

9. The bed leaving alarm device for high-risk patients of falling and dropping out of bed according to claim 8, characterized in that: The front and back of the warning flashing lamp (6) are both provided with label slots (601). A sticker (602) is fixedly installed at the bottom of the warning flashing lamp (6). Two magnetic clasps (603) are fixedly installed at the bottom of the warning flashing lamp (6). A second power socket (604) is installed on the front of the warning flashing lamp (6). The interior of the warning flashing lamp (6) includes a Bluetooth communication module and a power module. The output end of the power adapter (7) is connected to a power plug (701). The specification size of the power plug (701) is adapted to the specification sizes of the second power socket (604) and the first power socket (202).

10. The bed leaving alarm device for high-risk patients of falling and tumbling out of bed according to claim 1, characterized in that: Both ends of the wearable bracelet (8) are movably installed with watchbands (801). A number of auxiliary operation keys (805) are movably installed on one side of the wearable bracelet (8). A main operation key (804) is movably installed on the other side of the wearable bracelet (8). A charging port (803) is provided on one side of the wearable bracelet (8). A photoelectric sensor module (802) is installed at the bottom of the wearable bracelet (8).

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