Intelligent restraining device with self-adaptive adjustment function

Abstract

The invention relates to the field of restraint devices, and discloses a self-adaptive adjustment intelligent restraint device which comprises a restraint bed, an ankle fixing ring, a thigh restraint ring, a waist and abdomen restraint ring, a wrist restraint ring and a shoulder restraint strap are sequentially arranged at the top of the restraint bed from left to right, and fastening restraint straps of different sizes are arranged at the tops of the four restraint rings. A detection mechanism is arranged on the outer side of the restraint bed, a quick connection mechanism is arranged at one end of the fastening restraint strap, and an adjusting mechanism is arranged at the other end of the fastening restraint strap. The pressure of a patient is accurately calculated through the strain gauges, after the pressure is compared with a preset value, the motor can be driven to automatically adjust the tightness of the restraint strap, and the restraint safety, comfort and real-time performance are ensured. In addition, the device is further integrated with a quick connection mechanism facilitating operation of medical staff and has the function of sending an alarm to a nurse station through Bluetooth when the patient moves restlessly.

Description

Technical Field

[0001] The present invention relates to the technical field of restraint devices, and in particular to an intelligent restraint device with self-adaptive adjustment. Background Art

[0002] Currently, in clinical medical care, the use of physical restraints is a necessary and routine protective measure for patients experiencing unconsciousness, agitation, delirium, or aggressive behavior. This is to ensure their safety and prevent accidents such as falling out of bed, self-injury, and removal of vital medical circuits, thereby ensuring smooth treatment. Restraints, particularly restraint belts, have become a crucial auxiliary tool for ensuring the safety of these special patients and maintaining treatment order.

[0003] To meet the aforementioned restraint requirements, the existing restraint belts commonly used in clinical practice operate in a relatively straightforward and primitive manner. Typically, these restraint belts are made of sturdy cloth or leather, and their structure primarily consists of straps and fasteners. Medical staff wrap the straps around key areas of the patient's wrists, ankles, or torso as needed, then manually adjust the tightness by pulling. Finally, the other end of the strap is secured to the bed frame using methods such as knotting, perforated buckles, or Velcro. Once secured, the length and applied tension of the restraint belt remain static and constant, and the restraint state remains unchanged unless the medical staff manually adjusts it again.

[0004] However, over time, this traditional, manual, and single-function restraint method has exposed numerous inherent and insurmountable flaws. First, quantifying restraint force has become an unsolvable challenge. Medical staff rely solely on personal experience and subjective feel to apply restraint force, with no objective data to determine whether the force is excessive or insufficient. Too light a restraint fails to achieve the desired effect, posing a safety hazard; excessive restraint directly leads to the next serious problem.

[0005] Secondly, the patient's body is extremely vulnerable to additional injuries. Because the restraint force is uncontrollable and constant, prolonged fixed compression can severely affect blood circulation in the patient's local limbs. This can easily cause redness, swelling, bruising, and even more serious consequences such as pressure injuries.

[0006] Furthermore, existing restraints lack any form of dynamic responsiveness. They cannot sense the patient's real-time state, and whether the patient is in a state of intense agitation or has calmed down, the restraint belt remains at the originally set tension.

[0007] Furthermore, existing technologies also have significant gaps in early warning and monitoring. Medical staff are unable to immediately detect when patients begin to show signs of agitation, relying solely on a fixed ward rounds process. This delay in information transmission prevents medical staff from responding immediately to emergencies, significantly compromising the real-time and proactive nature of care. Summary of the Invention

[0008] In view of the deficiencies of the existing technology, the present invention provides an intelligent restraint device with self-adaptive adjustment, which solves the problem that the existing restraint device is too tight on the patient and easily injures the patient.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adaptively adjustable intelligent restraint device, including an adaptively adjustable intelligent restraint device, including a restraint bed, characterized in that the top of the restraint bed is provided with an ankle fixing ring, a thigh restraint ring, a waist and abdomen restraint ring, a wrist restraint ring and a shoulder restraint belt from left to right, and the tops of the four are all provided with fastening restraint belts of different sizes, a detection mechanism is provided on the outside of the restraint bed, one end of the fastening restraint belt is provided with a quick connection mechanism, which facilitates medical personnel to quickly connect and disassemble the fastening restraint belt, and the other end of the fastening restraint belt is provided with an adjustment mechanism, which is used to adjust the restraining force of the fastening restraint belt according to the patient's emotional state, the adjustment mechanism includes a driving motor and a mounting plate, the output end of the driving motor is fixedly connected to a driven rotating rod, the end of the driven rotating rod away from the driving motor is rotatably connected to the inside of the mounting plate, and one end of multiple fastening restraint belts are all wrapped around the outside of the driven rotating rod.

[0010] Preferably, the quick-connect mechanism includes a sub-buckle and a female buckle, and the sub-buckle is clamped inside the female buckle, one end of the fastening restraint belt is arranged on the top of the sub-buckle, and one side of the female buckle is fixed to the outside of the restraint bed through a connecting block.

[0011] Preferably, movable wheels are provided at the four bottom corners of the restraint bed.

[0012] Preferably, the detection mechanism includes a plurality of strain gauges, and the plurality of strain gauges are all arranged on the inner side of the fastening restraint belt, the strain gauge is connected to a strain measuring instrument via a lead, the strain measuring instrument is fixedly connected to one side of the restraint bed, the output end of the strain measuring instrument is connected to a restraint force setting instrument via a data connection line, and the restraint force setting instrument is electrically connected to the drive motor.

[0013] Preferably, a laser goniometer is installed at the right end of the restraint bed, and the laser goniometer is electrically connected to the restraint force setting instrument.

[0014] Preferably, the plurality of lead wires are embedded inside the tightening restraint belt.

[0015] Preferably, the restraint force setting instrument is internally provided with a Bluetooth transmitting module for transmitting a signal to the nurse station for alarm.

[0016] Preferably, the ankle fixing ring, thigh restraint ring and waist and abdomen restraint ring all adopt adjustable straps.

[0017] The present invention provides an intelligent restraint device with adaptive adjustment. It has the following beneficial effects:

[0018] 1. The present invention sets a precise strain gauge inside the restraint belt. By using a formula and combining it with the angle between the restraint belt and the bed board detected by the laser goniometer, the pressure of the restraint belt on the patient can be accurately calculated and transmitted to the strain measuring instrument; the restraint force setting instrument receives the pressure data transmitted by the strain measuring instrument in real time, combines it with the appropriate size of the agitation force set in the restraint force setting instrument according to the patient's age, physical condition, gender and other characteristics, and the value of the agitation force can be displayed on the setting instrument; the two pressures are compared, and when the real-time pressure is greater than the preset agitation force, it can be determined that the patient is in an agitated state, and the restraint belt can be tightened by driving the motor; because the real-time pressure will change according to the patient's condition, when the real-time pressure changes little within a time period, the motor can be driven to relax the tightening of the restraint belt, thereby relieving the restraint of the restraint belt on the patient, thereby ensuring the safety, comfort and real-time performance of the restraint.

[0019] 2. The present invention provides a quick-connect mechanism at one end of the restraint belt, which is similar to the principle of a climbing buckle. While ensuring a reliable connection, it also facilitates medical staff to quickly connect and remove it for replacement.

[0020] 3. The present invention sets a Bluetooth transmitter module inside the restraint force setting instrument. After receiving and comparing the real-time pressure of the restraint belt transmitted by the strain gauge, the restraint force setting instrument determines that the patient is in an agitated state. The Bluetooth module can be used to send an alarm signal to the nurse station to call medical staff to check on the patient in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 for Figure 1 A magnified view of middle A;

[0023] Figure 3 is a schematic diagram of the structure of the drive motor of the present invention;

[0024] Figure 4 FIG. 1 is a schematic diagram of the structure of the strain gauge of the present invention. FIG.

[0025] Among them, 1. Restraint bed; 2. Laser goniometer; 3. Strain gauge; 4. Ankle fixation ring; 5. Thigh restraint ring; 6. Waist and abdomen restraint ring; 7. Shoulder restraint belt; 8. Wrist restraint ring; 9. Fastening restraint belt; 10. Moving wheel; 11. Sub-buckle; 12. Female buckle; 13. Restraint force setting instrument; 14. Driving motor; 15. Driven rotating rod; 16. Mounting plate; 17. Data connection line; 18. Strain gauge; 19. Lead wire. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Please see the attached Figure 1 -Attached Figure 4 An embodiment of the present invention provides an intelligent restraint device with adaptive adjustment. Its overall structure includes a restraint bed 1 with movable wheels 10 at the four corners of the bottom of the bed for easy movement. The restraint bed 1 is equipped with restraint mechanisms for fixing different parts of the patient. From the feet to the shoulders, there are adjustable ankle fixing rings 4, thigh restraint rings 5, waist and abdomen restraint rings 6, as well as wrist restraint rings 8 and shoulder restraint belts 7, which are used to restrain and fix the patient at multiple angles. When only the patient's lower body is fixed, the waist and abdomen restraint ring 6 does not need to be fixed. These restraint rings / belts are connected to the top of the core fastening restraint belt 9 for applying and adjusting the restraint force. The core of the entire device consists of three parts: a detection mechanism, an adjustment mechanism, and a restraint force setting instrument 13 as the control center, which work together to achieve intelligent adaptive adjustment.

[0028] The intelligent restraint device consists of two components working together. First, a high-precision strain gauge 18 is embedded within each restraint strap 9. Its lead wire 19 is also cleverly embedded within the strap and connected to a strain gauge 3 on the side of the bed. The strain gauge 18 can detect in real time the strain ε generated by the traction of the restraint strap 9 when the patient moves. Second, a laser goniometer 2 is mounted at one end of the restraint bed 1 to measure in real time the angle α between the restraint strap 9 and the bed board or the patient's body surface. The data collected by the strain gauge 3 and the laser goniometer 2 is instantly transmitted to the restraint force setting device 13 via a data cable 17. Based on built-in physical formulas, the known elastic modulus E and cross-sectional area S of the restraint strap, combined with the real-time measured strain ε and angle α, the restraint force setting device 13 can accurately calculate the actual pressure Fpressure acting perpendicularly on the patient's body using the formula Fpressure = E*ε0*S*sinα. This design eliminates the fuzzy, subjective judgment-based approach of traditional restraint devices and achieves precise and objective data.

[0029] As the control center of the intelligent restraint device, the restraint force setting instrument 13 is not only a computing unit but also a decision-making and execution center. Medical personnel can pre-set a reasonable "force agitation" threshold Fpressure in the restraint force setting instrument 13 based on the patient's specific circumstances, such as age, weight, gender, and medical condition. During operation, the restraint force setting instrument 13 continuously receives and calculates the real-time pressure Fpressure0 and compares it with the preset threshold.

[0030] When it is detected that F pressure 0 is greater than F pressure agitation, the system determines that the patient has entered an agitated state. At this time, the restraint force setting device 13 will immediately send a command to the drive motor 14 in the adjustment mechanism. The drive motor 14 will then start, driving the driven rotating rod 15 to rotate within the mounting plate 16, tightening the fastening restraint belt 9 wrapped around it until the applied pressure reaches a preset safe restraint value. The motor then maintains torque to effectively and safely restrain the patient.

[0031] After the restraint is applied, the system does not stop monitoring. The restraint force setting instrument 13 will continue to analyze the changing trend of the strain data. When it detects that the fluctuation amplitude of the strain, that is, the pressure F pressure 0, is very small within a certain period of time, the system will determine that the patient has regained calm. At this time, it will again send a reverse command to the drive motor 14, causing it to slowly rotate in the opposite direction, loosening the fastening restraint belt 9 until it is in a relaxed state with only contact but no pressure, thereby maximizing the patient's comfort. This closed-loop design of "perception-judgment-execution-re-perception" realizes the fully automatic, dynamic, and intelligent adjustment of the restraint force.

[0032] In order to improve the operational efficiency and emergency response capabilities of medical staff, first of all, a quick-connect mechanism is designed at the connection end of the fastening restraint belt 9. This mechanism consists of a female buckle 12 fixed to the outer connecting block of the restraint bed 1 and a sub-buckle 11 arranged at the end of the fastening restraint belt 9. Its working principle is similar to that of a mountaineering buckle, which can be quickly and reliably connected and removed with one hand, greatly facilitating the installation and replacement of the restraint belt. Secondly, in order to achieve remote monitoring of patients, a Bluetooth transmitter module is also integrated into the restraint force setting instrument 13. When the system determines that the patient is in an agitated state and performs a restraint operation, the module will immediately transmit an alarm signal to the receiving device at the nurse's station. This enables medical staff to be aware of patient abnormalities at the first time and go to check in time, providing double protection for the patient's safety.

[0033] Working principle: The patient is restrained by a restraint belt. The elastic modulus E of the restraint belt, the cross-sectional area S in contact with the patient, and the pressure ε of the restraint belt measured by the strain gauge 18 can be used to calculate the tension F = S*E*ε of the restraint belt. When the patient is not agitated, the restraint belt is relaxed. When the patient moves, they pull on the restraint belt, generating a force. The strain gauge 18 within the restraint belt measures a strain force ε0. Based on the angle a0 between the restraint belt and the bed board, the pressure Fpressure = E*ε0*S is calculated. Using the angle α measured by the laser goniometer 2, Fpressure0 = Fpressure*sinα is calculated. When Fpressure0 is greater than the agitation force Fpressure set in the restraint force setting instrument 13, the patient is judged to be agitated. The restraint force setting instrument 13 controls the motor to achieve the set Fpressure constraint, maintaining the motor at this torque. When the patient is agitated, the strain on the restraint belt varies within a certain range. When the strain measured by the strain gauge 3 shows minimal change within a certain period of time, the patient is considered to have calmed down. The motor is then slowly turned to loosen the restraint belt, placing the patient in a more comfortable state.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adaptively adjustable intelligent restraint device, comprising a restraint bed (1), characterized in that: The top of the restraint bed (1) is provided with an ankle fixing ring (4), a thigh restraint ring (5), a waist and abdomen restraint ring (6), a wrist restraint ring (8) and a shoulder restraint belt (7) in order from left to right, and the tops of the four are all provided with fastening restraint belts (9) of different sizes. A detection mechanism is provided on the outside of the restraint bed (1). One end of the fastening restraint belt (9) is provided with a quick connection mechanism, which facilitates medical personnel to quickly connect and disassemble the fastening restraint belt (9). The other end of the fastening restraint belt (9) is provided with a quick connection mechanism. An adjustment mechanism is provided for adjusting the restraining force of the fastening restraint belt (9) according to the patient's emotional state. The adjustment mechanism comprises a driving motor (14) and a mounting plate (16). The output end of the driving motor (14) is fixedly connected to a driven rotating rod (15). One end of the driven rotating rod (15) away from the driving motor (14) is rotatably connected to the inside of the mounting plate (16), and one end of a plurality of the fastening restraint belts (9) is wound around the outside of the driven rotating rod (15).

2. The self-adaptive intelligent restraint device according to claim 1, characterized in that: The quick-connect mechanism comprises a sub-buckle (11) and a female buckle (12), wherein the sub-buckle (11) is clamped inside the female buckle (12), one end of the fastening restraint belt (9) is arranged on the top of the sub-buckle (11), and one side of the female buckle (12) is fixed to the outside of the restraint bed (1) through a connecting block.

3. The self-adaptive intelligent restraint device according to claim 1, characterized in that: The four corners of the bottom of the restraint bed (1) are all provided with moving wheels (10).

4. The self-adaptive intelligent restraint device according to claim 1, characterized in that: The detection mechanism comprises a plurality of strain gauges (18), and the plurality of strain gauges (18) are all arranged on the inner side of the fastening restraint belt (9), the strain gauges (18) are connected to a strain gauge (3) via a lead wire (19), the strain gauge (3) is fixedly connected to one side of the restraint bed (1), the output end of the strain gauge (3) is connected to a restraint force setting instrument (13) via a data connection line (17), and the restraint force setting instrument (13) is electrically connected to the drive motor (14).

5. The self-adaptive intelligent restraint device according to claim 4, characterized in that: A laser goniometer (2) is installed at the right end of the restraint bed (1), and the laser goniometer (2) is electrically connected to the restraint force setting instrument (13).

6. The self-adaptive intelligent restraint device according to claim 4, characterized in that: The plurality of lead wires (19) are embedded in the interior of the fastening restraint belt (9).

7. The self-adaptive intelligent restraint device according to claim 4, characterized in that: The restraint force setting instrument (13) is internally provided with a Bluetooth transmitting module, which is used to transmit a signal to the nurse station for alarm.

8. The self-adaptive intelligent restraint device according to claim 1, characterized in that: The ankle fixing ring (4), thigh restraint ring (5) and waist and abdomen restraint ring (6) all adopt adjustable straps.

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