Portable patient limb restraint device

Abstract

The invention discloses a portable patient limb restraint device in the technical field of medical auxiliary instruments, the portable patient limb restraint device comprises a base, a bed body and a plurality of restraint straps, the bed body is mounted on the base, a plurality of buffer assemblies are distributed at the bottom of the bed body in a linear array mode, and the ends, close to the edge of the bed body, of the buffer assemblies are detachably connected with the restraint straps; a plurality of adjusting assemblies in one-to-one correspondence with the buffer assemblies are distributed on the surface of the bed body in a linear array manner; the buffering assembly is used for buffering and limiting the restraint strap based on the negative pressure and the elastic effect; the adjusting assemblies are used for lifting through movement of the corresponding buffering assemblies, and the supporting point positions of the corresponding restraint straps are changed. Through the negative pressure and elastic design of the buffering assembly, the pulling force generated by pulling the limbs of a patient can be effectively buffered, sudden increase of the compression force of the restraint strap is avoided, and skin injuries and blood circulation disorders are reduced; the adjusting assembly can flexibly adjust the restraint strap supporting point position according to the limb state of the patient, and restraint comfort and adaptability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary devices, in particular to a portable patient limb restraint device. BACKGROUND

[0002] In a medical scenario, limb restraint of a patient is a special medical intervention measure, which is usually implemented after weighing the pros and cons in order to protect the patient's own safety, smooth treatment or the safety of others. For example: some patients may have unconscious limb movements such as extubation, scratching of wounds, falling out of bed, and colliding with surrounding objects due to consciousness disorders (such as coma, delirium, and agitation), mental symptoms (such as hallucinations and delusions), or nervous system diseases (such as seizures); some patients may have aggressive behavior (such as hitting, biting, and tearing clothes) due to mental symptoms, drug reactions, or acute brain injury, which threatens the safety of medical staff, other patients, or family members. At this time, restraining the patient's limbs can temporarily protect the patient or the caregiver from injury, and create conditions for the use of sedatives or psychiatric interventions.

[0003] The existing portable patient limb restraint device, such as a wrist / ankle restraint belt, is usually composed of a wide cloth belt (width 5-8 cm to avoid bruising), a magic tape or a buckle type lock, and a connecting belt. Some have adjustable length tension devices. When in use, the restraint belt is mainly wrapped around the wrist or ankle, the magic tape is fixed (or the buckle is fastened), and the other end of the connecting belt is connected through the bed rail, which needs to be wrapped around 2-3 times and then tied or fixed. However, the connecting belt of this type of restraint belt is usually designed with fixed length and rigidity, and lacks effective cushioning structure. When the patient has rapid and violent limb pulling due to agitation, pain, or consciousness disorder, the connecting part between the restraint belt and the bed rail cannot disperse the pulling force through elastic deformation, resulting in an instantaneous sharp increase in the force between the restraint belt and the binding position of the patient's wrist or ankle. This instantaneous impact force can suddenly increase the compression force of the restraint belt on the limb, which may not only exceed the safe tension of "accommodating 1-2 fingers", but also cause skin and subcutaneous tissue damage due to sudden increase in local pressure, resulting in redness, swelling, and bruising, or even blood circulation disorder, skin ulceration, and nerve damage. In addition, the reaction force during violent pulling may cause the fixed point of the connecting belt and the bed rail to loosen, thereby reducing the restraint effect and failing to achieve the original intention of "protecting the safety of the patient".

[0004] Therefore, the present application proposes a portable patient limb restraint device to solve the above problems. SUMMARY

[0005] To solve the above problems, the application provides a portable patient limb restraint device, which utilizes the dual effects of negative pressure and elasticity to effectively disperse and buffer the pulling force when the patient's limbs pull the restraint belt, thereby avoiding sudden increase of the compression force of the restraint belt on the limbs due to instantaneous impact force, and reducing the occurrence of problems such as skin and subcutaneous tissue damage and blood circulation disorder.

[0006] To achieve the above-mentioned purpose, the technical scheme of the application is as follows: a portable patient limb restraint device, comprising a base, a bed body and a plurality of restraint belts, the bed body is installed on the base, a plurality of buffer assemblies are linearly arranged at the bottom of the bed body, and one end of each buffer assembly near the edge of the bed body is detachably connected with a restraint belt; a plurality of adjustment assemblies corresponding to the buffer assemblies are linearly arranged on the surface of the bed body.

[0007] The buffer assembly is used for buffering and limiting the restraint belt based on the effects of negative pressure and elasticity; the adjustment assembly is used for lifting by the movement of the corresponding buffer assembly to change the support point of the corresponding restraint belt.

[0008] The basic scheme principle is that when the patient's limbs pull the restraint belt, the restraint belt will drive the related components in the buffer assembly to move, the buffer assembly generates a counteracting force through the effects of negative pressure and deformation of the elastic component to buffer and limit the pulling force and reduce the instantaneous impact force; at the same time, the movement of the buffer assembly will cause the corresponding adjustment assembly to change, so that the adjustment assembly is lifted and the support point of the restraint belt is changed to adapt to the activity state of the patient's limbs (further limit the movement of the limbs).

[0009] The above-mentioned scheme has the following beneficial effects: first, through the dual buffering effects of negative pressure and elasticity of the buffer assembly, the instantaneous impact force when the patient's limbs pull can be effectively dispersed and relieved, the compression force of the restraint belt on the limbs is avoided from sudden increase, and the occurrence of adverse conditions such as skin damage and blood circulation disorder is reduced, thereby ensuring the safety of the patient's limbs; second, the support point of the adjustment assembly can be changed with the movement of the buffer assembly, thereby improving the adaptability of the restraint device to the activity of the patient's limbs; third, the overall structure of the device is reasonably designed, the restraint belt and the buffer assembly are detachably connected, which is convenient for use and maintenance, can better realize the safe restraint of the patient, ensure the smooth progress of the treatment process, and solve the drawbacks of the existing restraint device due to the lack of effective buffer structure.

[0010] Further, the buffer assembly comprises an adjustment column and a fixed body fixedly connected to the bottom end of the bed body, and the adjustment column is fixedly connected to the end of the two adjacent fixed bodies close to each other.

[0011] The fixed body is provided with a sliding cavity and a negative pressure cavity from left to right, the sliding cavity is slidably connected with a balance piston, the balance piston is fixedly connected with a spring on the side close to the adjusting column, and the spring is fixedly connected to the side wall of the negative pressure cavity on the side away from the balance piston; the side away from the balance piston of the balance piston is fixedly connected with a connecting belt, and the end of the connecting belt away from the balance piston penetrates through the sliding cavity and is detachably connected with the restraint belt.

[0012] The adjusting column is provided with a negative pressure adjusting cavity in communication with the negative pressure cavity, and the negative pressure adjusting cavity is provided with an adjusting rod in threaded connection with the adjusting column, and the adjusting rod is fixedly connected with an adjusting piston in sliding connection with the inner wall of the negative pressure adjusting cavity.

[0013] Beneficial effect: this structure makes the buffering effect of the buffer assembly more specific and can be realized. When the patient pulls the restraint belt, the connecting belt drives the balance piston to slide in the sliding cavity, the spring is stretched to generate elastic buffering force, and the air pressure change in the negative pressure cavity and the negative pressure adjusting cavity forms negative pressure buffering force, and the double buffering effectively disperses the pulling force; by rotating the adjusting rod to drive the adjusting piston to move, the initial air pressure of the negative pressure cavity can be adjusted, and the buffering degree can be flexibly adjusted according to the patient's body type, the degree of restlessness and the like, so as to adapt to the needs of different patients and improve the individualization and safety of the restraint.

[0014] Further, the sliding cavity is in communication with the negative pressure cavity and the diameter of the sliding cavity is greater than the diameter of the negative pressure cavity.

[0015] Beneficial effect: the diameter of the sliding cavity is greater than the diameter of the negative pressure cavity, the air pressure change in the negative pressure cavity is more significant under the same displacement when the balance piston moves in the sliding cavity, and the sensitivity and effect of negative pressure buffering can be enhanced; at the same time, the sliding cavity with larger diameter provides more stable sliding space for the balance piston, reduces the jamming of the piston during movement, and ensures the smoothness of the buffering process.

[0016] Further, the surface of the fixed body is provided with an air pressure gauge for detecting the air pressure in the negative pressure cavity.

[0017] Beneficial effect: the air pressure gauge can display the air pressure value in the negative pressure cavity in real time, the medical staff can intuitively understand the current state of the negative pressure buffering, and can adjust the air pressure in time through the adjusting rod according to the patient's condition, so as to ensure that the negative pressure buffering effect is in a suitable range; at the same time, abnormal change of air pressure can reflect whether the device has air leakage and other faults, so as to facilitate timely troubleshooting and maintenance, and ensure normal operation of the device.

[0018] Further, the adjusting assembly comprises a lifting groove opened on the surface of the bed body, the lifting groove is slidably connected with a lifting plate, the bottom of the lifting groove is communicated with an inflation pipe, and the end of the inflation pipe away from the lifting groove is communicated to the sliding cavity of the corresponding fixed body.

[0019] Beneficial effects: When the patient pulls the restraint belt to make the balance piston move in the sliding cavity, the gas in the sliding cavity enters the lifting groove through the inflation tube, pushing the lifting plate to rise, automatically realizing the change of the support point, and further changing the allowable sliding length of the restraint belt, and adaptively adjusting according to the patient's limb movement.

[0020] Furthermore, a plurality of air release valves corresponding to the lifting grooves are installed at the bottom end of the bed.

[0021] Beneficial effects: The air release valve can release the gas in the lifting groove when needed, allowing the lifting plate to return to its initial position, making it easy to adjust the support point according to the patient's treatment or body position changes, and the operation is flexible and convenient; at the same time, after the patient's limb movements are stable, the air can be released through the air release valve to reset the lifting plate, avoiding discomfort to the patient caused by long-term lifting.

[0022] Furthermore, a one-way valve is installed in each inflation tube.

[0023] Beneficial effects: The one-way valve can prevent the gas in the lifting groove from flowing back into the sliding cavity, ensuring that the lifting plate can stably maintain the corresponding height after lifting, ensuring the stability of the support point; avoiding the sudden drop of the lifting plate due to gas reflux, affecting the restraint effect and patient safety.

[0024] Furthermore, a buffer layer is provided on each side of the lifting plates close to each other.

[0025] Beneficial effects: The buffer layer is usually made of soft and elastic materials, which can reduce direct hard contact between the lifting board and the patient's limbs, and reduce the risk of injury to the limbs caused by compression of the lifting board.

[0026] Furthermore, it also includes a detection component for detecting the pulling of the patient's limbs on the restraint belt.

[0027] Beneficial Effects: The detection component monitors the patient's limbs pulling on the restraints in real time, allowing medical staff to monitor the patient's limb movements and avoid adverse consequences caused by unnoticed excessive pulling. By detecting the pulling, it can predict potential agitation, allowing medical staff to take timely intervention measures, improving the timeliness and effectiveness of patient care and further ensuring patient safety.

[0028] Furthermore, the detection assembly includes a controller and a plurality of pressure sensors, each of which is arranged between the spring and the side wall of the negative pressure chamber; the pressure sensors and the pressure gauge are both electrically connected to the controller;

[0029] The controller is used to receive the spring force data collected by the pressure sensor and the air pressure data in the negative pressure chamber collected by the pressure gauge, and perform comprehensive analysis and processing to determine the pulling situation of the patient's limbs on the restraint belt and perform corresponding alarm processing.

[0030] Beneficial effects: the detection assembly of the structure obtains spring force data through the pressure sensor, combines with the air pressure data in the negative pressure cavity of the air pressure gauge, and is analyzed comprehensively by the controller, so that the pulling situation of the limbs of the patient, including the pulling strength and frequency, can be judged more accurately. The judgment mode of the multi-data fusion improves the accuracy of the detection and avoids the errors that may occur in single data detection. Medical staff can adjust the buffering strength and support point according to the analysis result of the controller, realize more refined nursing, and also provide a reference basis for evaluating the illness state of the patient, and improve the intelligence and practical value of the device.

[0031] Additional aspects and advantages of the application will be described in part in the following description, some of which will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the overall front view of the embodiment of the portable patient limb restraint device of the application;

[0033] Figure 2 It is the overall front view of the embodiment of the portable patient limb restraint device of the application;

[0034] Figure 3 It is the overall front view of the embodiment of the portable patient limb restraint device of the application;

[0035] Figure 4 It is the overall front view of the embodiment of the portable patient limb restraint device of the application;

[0036] Figure 5 It is the overall front view of the embodiment of the portable patient limb restraint device of the application;

[0037] The reference signs in the drawings of the specification include: 1, bed body; 2, restraint belt; 3, lifting plate; 301, lifting groove; 302, air valve; 4, base; 5, fixed body; 501, connecting belt; 502, inflation tube; 503, air pressure gauge; 504, sliding cavity; 505, balance piston; 506, spring; 507, negative pressure cavity; 508, pressure sensor; 6, adjusting column; 601, adjusting rod; 602, negative pressure adjusting cavity; 603, adjusting piston. DETAILED DESCRIPTION

[0038] The technical solutions of the application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The specific embodiments are further described in detail below:

[0042] Embodiment 1:

[0043] As shown in Figure 1 A portable patient limb restraint device, comprising a base 4, a bed body 1 and a plurality of restraint belts 2, the bed body 1 is installed on the base 4. For the patient limb restraint device in the prior art (the connection belt 501 is mostly rigid design with fixed length), it is difficult to effectively buffer when the patient has rapid and violent limb pulling. The present scheme provides a buffer assembly for buffering and limiting the restraint belt 2 based on negative pressure and elastic action, as follows:

[0044] As shown in Figure 2 And Figure 3 The buffer assembly is composed of an adjusting column 6 and a fixed body 5, the fixed body 5 and the adjusting seat are bolted to the bottom end of the bed body 1, and the adjusting column 6 is integrally formed at the right end of the fixed body 5; combined with Figure 4As shown, the fixing body 5 is provided with a sliding cavity 504 and a negative pressure cavity 507 from left to right, and the sliding cavity 504 is slidably provided with a balance piston 505, the right side of the balance piston 505 is welded with a spring 506, and the right end of the spring 506 is welded to the side wall of the negative pressure cavity 507; the left side of the balance piston 505 is integrally formed with a connecting belt 501, the left end of the connecting belt 501 penetrates through the sliding cavity 504 and is detachably connected with the restraint belt 2 (preferably a buckle connection mode, which is convenient for installation and disassembly); the adjusting column 6 is provided with a negative pressure adjusting cavity 602 which is in communication with the negative pressure cavity 507, and the negative pressure adjusting cavity 602 is provided with an adjusting rod 601 which is threadedly connected with the adjusting column 6, and the bottom end of the adjusting rod 601 is integrally formed with an adjusting piston 603 which is slidably connected with the inner wall of the negative pressure adjusting cavity 602.

[0045] The operation principle of the buffer assembly is as follows: first, the medical staff can adjust the buffering degree according to the specific situation of the patient by rotating the adjusting rod 601. That is, by rotating the adjusting rod 601, the adjusting piston 603 slides up and down in the negative pressure adjusting cavity 602, so as to change the initial air pressure of the whole negative pressure cavity 507 and negative pressure adjusting cavity 602. Specifically, at the beginning, the adjusting piston 603 is located at the bottom end of the negative pressure adjusting cavity 602, the adjusting rod 601 and the adjusting piston 603 are moved upward by rotating the adjusting rod 601, at this time, the volume of the whole cavity formed by the negative pressure cavity 507 and the negative pressure adjusting cavity 602 is increased, and since the cavity is in a sealed state, the air pressure on both sides of the balance piston 505 is different, a pressure difference is formed, so as to form an initial limiting force (on the patient's limbs and the restraint belt 2).

[0046] In combination with Figure 4As shown, when the patient pulls the restraint belt 2 due to restlessness or the like, the restraint belt 2 will move the connecting belt 501 to the left, and the connecting belt 501 will in turn pull the balance piston 505 to slide to the left in the sliding cavity 504. At this time, the spring 506 on the right side of the balance piston 505 is elongated, and the spring 506 generates an elastic pulling force to the right, forming an elastic buffer force to preliminarily buffer the pulling force. At the same time, the leftward sliding of the balance piston 505 will increase the space in the negative pressure cavity 507, and the air pressure will decrease, forming an air pressure difference with the outside world, generating a negative pressure acting force to the right, forming a negative pressure buffer force, further buffering the pulling force. The elastic buffer force and the negative pressure buffer force act together, effectively dispersing and relieving the instantaneous impact force when the patient pulls, and this buffering action can be self-adaptively adjusted according to the movement amplitude of the patient's limbs. When the movement amplitude of the patient's limbs is small, the sliding distance of the balance piston 505 is short, the deformation degree of the spring 506 is small, the elastic buffer force is weak, and at the same time, the air pressure change in the negative pressure cavity 507 is small, so the negative pressure buffer force is also weak, avoiding excessive buffering affecting the restraint effect; when the movement amplitude of the patient's limbs is large, the sliding distance of the balance piston 505 is long, the deformation degree of the spring 506 is large, the elastic buffer force is increased, and the air pressure in the negative pressure cavity 507 is greatly reduced, so the negative pressure buffer force is also significantly increased, thereby providing stronger buffering effect to cope with larger pulling force.

[0047] Secondly, the dual action of the spring 506 and the negative pressure has better buffering performance than single elastic buffering or negative pressure buffering. If only the spring 506 is used for single buffering, when the patient's pulling force is too large and the duration is relatively long, the spring 506 may be fatigued due to excessive deformation, resulting in weakening or even failure of the buffering effect, and the spring force of the spring 506 changes linearly, which is difficult to cope with complex and variable pulling force; if only negative pressure is relied on for single buffering, when the air pressure is not properly adjusted, the buffering force may suddenly increase or decrease, the stability is poor, and the buffering action will be completely lost when the negative pressure cavity 507 leaks or the like. Under the dual action, the spring 506 can quickly respond to the instantaneous pulling force and provide immediate buffering, and the negative pressure can continuously and stably exert the buffering force through the air pressure change, and the two complement each other, which can cope with sudden and violent pulling and maintain stable buffering effect in the process of continuous pulling, greatly improving the reliability and adaptability of the buffering.

[0048] When the patient stops pulling, under the elastic restoring force of the spring 506 and the air pressure in the negative pressure cavity 507, the balance piston 505 will drive the connecting belt 501 and the restraint belt 2 back to the initial position, waiting for the next buffering action.

[0049] Secondly, the sliding cavities 504 are all in communication with the negative pressure cavities 507, and the diameters of the sliding cavities 504 are all greater than the diameters of the negative pressure cavities 507 (for example, the diameters of the sliding cavities 504 are 20 mm, and the diameters of the negative pressure cavities 507 are 10 mm). Figure 4As shown, the balancing piston 505 is restricted from sliding excessively to the right, thereby compressing the spring 506. This prevents the patient from pulling on the restraint belt 2 when the spring 506 is compressed, preventing the compressed spring 506 from providing a timely counterforce and acting as a buffer. Specifically, when the balancing piston 505 slides to the right, its edge is blocked by the step at the connection between the sliding chamber 504 and the negative pressure chamber 507, thereby controlling the compression of the spring 506 within a safe range (the spring 506 can only be stretched), ensuring that the spring 506 can always play an effective elastic buffering role. At the same time, it prevents the balancing piston 505 from sliding to the right when low pressure is formed in the negative pressure chamber 507.

[0050] Example 2:

[0051] As described in Example 1, the elasticity of the spring 506 and the pressure difference on both sides of the balancing piston 505 are used to implement a certain adaptive buffering restriction when the patient pulls the restraint belt 2, but the length of the restraint belt 2 is not changed, that is, the permitted range of motion of the restraint belt 2 is unchanged, making it difficult to further restrict the patient's limbs from moving around. When the patient is highly agitated and frequently and drastically swings his limbs within the permitted range of motion, even if the buffer component can effectively reduce the instantaneous impact force, the fixed range of motion may cause the patient's limbs to touch medical instruments, pipelines, etc., posing risks such as accidental extubation and collision. It is impossible to dynamically adjust the restraint range according to the patient's agitation to enhance the restriction effect. Therefore, Figure 1 and Figure 5 As shown, in this embodiment, the surface of the bed 1 is provided with a plurality of lifting grooves 301 corresponding one-to-one with the fixed body 5. Each lifting plate 3 slides in each of the lifting grooves 301. The bottom of each lifting groove 301 is connected to an inflation tube 502, with one end of the inflation tube 502, away from the lifting groove 301, connected to the sliding cavity 504 of the corresponding fixed body 5. A plurality of air release valves 302 are installed at the bottom end of the bed 1, corresponding one-to-one with the lifting grooves 301. Each inflation tube 502 is equipped with a one-way valve (sliding cavity 504 → inflation tube 502 → lifting groove 301). The one-way valve is an elastic one-way valve, and the opening pressure value can be manually set to correspond to the degree of pull of the patient's limbs on the restraint belt 2.

[0052] The specific implementation process is as follows: when the patient is in a calm state or only moves slightly, the position of the balance piston 505 in the sliding chamber 504 is relatively stable, the air pressure in the sliding chamber 504 does not change significantly, no gas enters the lifting groove 301, and the lifting plate 3 remains in the initial lower position, and does not provide additional support for the restraint belt 2. At this time, the patient's limbs can move within the normal range allowed by the restraint belt 2 to ensure basic comfort.

[0053] When the patient's agitation intensifies, the restraint belt 2 is pulled to make the balance piston 505 slide left in the sliding cavity 504, the space in the sliding cavity 504 is compressed, and the air pressure is increased. Due to the presence of the one-way valve in the inflation pipe 502, the gas can only flow from the sliding cavity 504 to the lifting groove 301 through the inflation pipe 502 and cannot flow in the opposite direction. The high-pressure gas enters the lifting groove 301 through the inflation pipe 502, pushes the lifting plate 3 to slide upward along the lifting groove 301, the lifting plate 3 is gradually lifted and contacts the restraint belt 2 to provide an additional support point for the restraint belt 2. As the patient's pulling force increases, the sliding distance of the balance piston 505 increases, the air pressure in the sliding cavity 504 further increases, the gas entering the lifting groove 301 increases, and the lifting height of the lifting plate 3 also increases, so that the support point gradually increases, thereby changing the distance (reducing) of the support point of the restraint belt 2 on the patient's limbs, and further limiting the movement range of the patient's limbs. When the patient's agitation is relieved and the pulling force is reduced, the elastic restoring force of the spring 506 and the air pressure of the negative pressure cavity 507 will push the balance piston 505 to slide right, at this time, if the lifting plate 3 needs to be reset, the medical staff can open the air release valve 302 corresponding to the lifting groove 301, the gas in the lifting groove 301 is discharged through the air release valve 302, and the lifting plate 3 falls back to the initial position under the action of its own gravity, waiting for the next lifting action.

[0054] In addition, in order to reduce the damage of the patient's limbs after colliding with the lifting plate 3, a buffer layer is arranged on the side close to each other of the lifting plate 3. At the same time, in order to ensure the stability of the support point provided on the lifting plate 3, a plurality of through grooves are arranged at the top end of the lifting plate 3, and in use, the restraint belt 2 passes through the through grooves to limit the restraint belt 2 and prevent the restraint belt 2 from sliding off the lifting plate 3 when being pulled.

[0055] Embodiment 3:

[0056] The difference from the above embodiment is that, in order to facilitate the medical staff to timely understand the situation of the patient's limbs being restrained and the pulling situation, the present scheme further comprises a controller and a plurality of pressure sensors 508, the pressure sensors 508 are arranged between the spring 506 and the side wall of the negative pressure cavity 507; the pressure sensor 508 and the air pressure gauge 503 are electrically connected with the controller.

[0057] Specifically, the controller receives the force data of the spring 506 collected by the pressure sensor 508 and the air pressure data in the negative pressure cavity 507 collected by the air pressure gauge 503, and analyzes these data in real time. By analyzing the change speed and value of the pressure sensor 508 data, combined with the air pressure change in the negative pressure cavity 507 reflected by the air pressure gauge 503, the pulling strength, frequency and intensity of the patient's limbs on the restraint belt 2 are judged. When it is detected that the patient's pulling strength exceeds the preset safety threshold, or the pulling frequency abnormally increases, indicating that the patient may be in an overactive state, the controller will issue an alarm signal (such as an audible and visual alarm), timely reminding medical staff to check and take appropriate intervention measures; at the same time, the controller can store and record historical data, which is convenient for medical staff to check the patient's limb activity in the future, and provides data support for evaluating the patient's condition and restraint effect. For example, when the pressure sensor 508 detects that the force of the spring 506 increases from 20N to 80N in 10 seconds, and the air pressure gauge 503 shows that the air pressure in the negative pressure cavity 507 decreases rapidly, the controller determines that the patient has a violent pull, and immediately triggers an alarm to enable medical staff to respond quickly and avoid accidents.

[0058] Obviously, the above embodiments are only examples for clear illustration, and are not limitations on the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or variations. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A portable patient limb restraint device, comprising a base (4), a bed (1) and a plurality of restraint belts (2), wherein the bed (1) is mounted on the base (4), and is characterized in that: A plurality of buffer components are distributed in a linear array on the bottom of the bed (1), and one end of the buffer component close to the edge of the bed (1) is detachably connected to the restraint belt (2); a plurality of adjustment components corresponding to the buffer components are distributed in a linear array on the surface of the bed (1); The buffer component is used to buffer and limit the restraint belt (2) based on negative pressure and elastic action; the adjustment component is used to lift through the movement of the corresponding buffer component to change the support point position of the corresponding restraint belt (2).

2. The portable patient limb restraint device according to claim 1, characterized in that: The buffer components each include an adjusting column (6) and a fixed body (5) fixedly connected to the bottom wall of the bed body (1), and the adjusting column (6) is fixedly connected to one end of two adjacent fixed bodies (5) close to each other; The fixed body (5) is provided with a sliding cavity (504) and a negative pressure cavity (507) from left to right. A balancing piston (505) is slidably fitted in the sliding cavity (504). The balancing piston (505) is fixedly connected to a spring (506) on the side close to the regulating column (6). The end of the spring (506) away from the balancing piston (505) is fixedly connected to the side wall of the negative pressure cavity (507); the balancing piston (505) is fixedly connected to a connecting belt (501) on the side away from the spring (506). The end of the connecting belt (501) away from the balancing piston (505) passes through the sliding cavity (504) and is detachably connected to the restraint belt (2). A negative pressure regulating chamber (602) communicating with the negative pressure chamber (507) is provided in the regulating column (6); an regulating rod (601) threadedly connected to the regulating column (6) is provided inside the negative pressure regulating chamber (602); and a regulating piston (603) slidably engaged with the inner wall of the negative pressure regulating chamber (602) is fixedly connected to the bottom end of the regulating rod (601).

3. The portable patient limb restraint device according to claim 2, characterized in that: The sliding cavities (504) are all connected to the negative pressure cavities (507) and the diameter of the sliding cavities (504) is larger than the diameter of the negative pressure cavities (507).

4. The portable patient limb restraint device according to claim 3, characterized in that: A barometer (503) for detecting the air pressure in the negative pressure chamber (507) is installed on the surface of the fixed body (5).

5. The portable patient limb restraint device according to claim 4, characterized in that: The adjustment components all include a lifting groove (301) opened on the surface of the bed (1), the lifting plate (3) is slidably matched in the lifting groove (301), and the bottom of the lifting groove (301) is connected to an inflation tube (502), and the inflation tube (502) is connected to the sliding cavity (504) of the corresponding fixed body (5) at one end away from the lifting groove (301).

6. The portable patient limb restraint device according to claim 5, characterized in that: A plurality of air release valves (302) corresponding one to one with the lifting grooves (301) are installed at the bottom end of the bed (1).

7. The portable patient limb restraint device according to claim 6, characterized in that: A one-way valve is installed in each of the inflation tubes (502).

8. The portable patient limb restraint device according to claim 7, characterized in that: A buffer layer is provided on each side of the lifting plates (3) that are close to each other.

9. The portable patient limb restraint device according to claim 8, characterized in that: It also includes a detection component for detecting the pulling condition of the restraint belt (2) by the patient's limbs.

10. The portable patient limb restraint device according to claim 9, characterized in that: The detection assembly includes a controller and a plurality of pressure sensors (508), wherein the pressure sensors (508) are arranged between the spring (506) and the side wall of the negative pressure chamber (507); the pressure sensors (508) and the pressure gauge (503) are both electrically connected to the controller; The controller is used to receive the force data of the spring (506) collected by the pressure sensor (508) and the air pressure data in the negative pressure chamber (507) collected by the pressure gauge (503), and perform comprehensive analysis and processing to determine the pulling conditions of the restraint belt (2) by each of the patient's limbs and perform corresponding alarm processing.

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