Patient weight measuring system

Abstract

The utility model relates to the field of clinical physiological parameter measurement, and discloses a patient weight measuring system. The patient weight measuring system can comprise a pressure detection assembly and a host which are connected, the pressure detection assembly is installed on a floor of a patient weight measuring space, and the pressure detection assembly can bear pressure applied by a sickbed and generate a corresponding electric signal according to the pressure when a patient is located on the sickbed and the sickbed is located on the pressure detection assembly. The electric signal is sent to the host, and the host measures the body weight of the patient according to the electric signal and the known sickbed weight. The weight of a critical patient on the sickbed can be measured without standing, posture adjusting and body moving of the critical patient on the sickbed, and the worsening risk of the critical patient can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of clinical physiological parameter measurement, in particular to a patient weight measurement system. Background Art

[0002] Clinically, body weight is an important indicator that can reflect the treatment process and treatment effect. For example, the increase or decrease of ascites volume in patients with ascites, the nutritional assessment of patients with nutritional metabolic disorders, and the ultrafiltration volume of patients undergoing hemodiafiltration can all be reflected by the patient's body weight.

[0003] The patient's body weight also directly affects whether the treatment plan is implemented, whether the treatment method needs to be adjusted, and whether the treatment process is safe. Accurately mastering the patient's body weight can determine whether drug treatment is accurate and effective, making drug use safer and more effective.

[0004] For a long time, it has been difficult to weigh critically ill patients. Related technologies generally use the suspension method or the flat-bed patient moving and weighing method, which may increase the risk of exacerbating their condition. Content of the Utility Model

[0005] In view of the above problems, the purpose of the utility model is to provide a patient weight measurement system that can measure the weight of critically ill patients in the hospital bed and can effectively reduce the risk of exacerbating the condition of critically ill patients.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A patient weight measurement system, comprising:

[0008] A pressure detection component, in a plate-like structure, installed on the floor of the patient weight measurement space, for detecting the electrical signal of the hospital bed and / or the patient pressure;

[0009] A host, connected to the pressure detection component through a first shielded cable, for receiving the electrical signal transmitted by the pressure detection component and generating and displaying the patient weight data according to the received electrical signal.

[0010] Optionally, the hospital bed includes a bed body and a movement component; the movement component is installed at the bottom of the bed body for supporting the weight of the bed body and driving the bed body to move;

[0011] The pressure detection component is further configured to detect the electrical signal of the pressure of the bed body with the movement component and send it to the host.

[0012] Optionally, the pressure detection component includes at least one sub-component, and each sub-component includes:

[0013] A pressure sensor, which is used to detect the pressure of the moving component to generate a corresponding electrical signal and send it to the host;

[0014] An anti-slip groove, which is arranged on the top of the pressure sensor and is used to contact and firmly hold the moving component;

[0015] Anti-slip silica gel, which is arranged between the bottom of the pressure sensor and the floor and is used to prevent sliding.

[0016] Optionally, the pressure sensor is a resistive pressure sensor.

[0017] Optionally, the moving component includes a plurality of rotating wheels for supporting the weight of the bed body and driving the bed body to move.

[0018] Optionally, the host includes:

[0019] A chassis;

[0020] A processor, which is installed inside the chassis and is connected to the pressure detection component through the first shielded cable, and is used to generate the patient weight data according to the electrical signal sent by the pressure detection component;

[0021] A display, which is arranged at the front of the chassis and is connected to the processor, and is used to receive and display the patient weight data sent by the processor.

[0022] Optionally, the system further includes two electrode patch groups, which are respectively used to be pasted on the skin of both arms of the patient; each electrode patch group is connected to the processor through a second shielded cable.

[0023] Optionally, the system further includes:

[0024] A power supply, which is electrically connected to the processor and the display and is used to supply power to the processor and the display.

[0025] Optionally, the host further includes:

[0026] A power switch, which is arranged on the power supply circuit connecting the processor and the display and is used to disconnect or close the power supply circuit.

[0027] The patient weight measurement system proposed by the present utility model may include a pressure detection component and a host connected to each other. The pressure detection component is installed on the floor of the patient weight measurement space. When a patient is on a hospital bed and the hospital bed is located on the pressure detection component, the pressure detection component can bear the pressure exerted by the hospital bed and generate a corresponding electrical signal according to the pressure, and send the electrical signal to the host. The host measures the patient's weight based on the electrical signal and the known weight of the hospital bed. The present utility model can measure the weight of critically ill patients on a hospital bed without the need for the critically ill patients on the hospital bed to stand, adjust their postures, or move their bodies, which can effectively reduce the risk of deterioration of the condition of critically ill patients. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of a patient weight measurement system proposed by an embodiment of the present utility model;

[0030] Figure 2 It is a schematic structural diagram of a pressure detection component proposed by an embodiment of the present utility model;

[0031] Figure 3 It is a schematic structural diagram of a host proposed by an embodiment of the present utility model. Detailed Embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present utility model with reference to the drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0033] It should be noted that the terms used here are only for describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Such as Figure 1As shown in the figure, this embodiment provides a patient weight measurement system, which may include:

[0035] A pressure detection component 02, in a plate-like structure, is installed on the floor of the patient weight measurement space, and is used to detect the electrical signals of the hospital bed and / or the patient's pressure;

[0036] A host 01 is connected to the pressure detection component 02 through a first shielded cable 61, and is used to receive the electrical signals transmitted by the pressure detection component 02, and generate and display patient weight data according to the received electrical signals.

[0037] Among them, the weight measurement space may be an indoor space or an outdoor space for measuring the patient's weight. The indoor space may be a ward, a hall, a corridor, etc. in a hospital.

[0038] Optionally, before the patient lies on the hospital bed, the hospital bed can be located on the pressure detection component 02 first. At this time, the pressure detection component 02 can generate an electrical signal according to the pressure exerted by the hospital bed and send it to the host 01. The host 01 can measure the weight of the hospital bed according to this electrical signal. After that, the patient can move onto the hospital bed independently or with the help of relevant personnel. The pressure exerted by the hospital bed on the pressure detection component 02 changes. The pressure detection component 02 can generate a new electrical signal and send it to the host 01. The host 01 can measure the patient's weight according to this new electrical signal and the weight of the hospital bed.

[0039] Optionally, before the patient moves onto the hospital bed, the hospital bed is already located on the pressure detection component 02. At this time, the pressure detection component 02 is also used to generate corresponding electrical signals according to the pressure exerted by the hospital bed and send them to the host 01 when the patient moves onto the hospital bed.

[0040] Specifically, the hospital bed in this embodiment can be located on the pressure detection component 02 first without supporting the patient. At this time, the pressure detection component 02 can generate a corresponding first electrical signal according to the first pressure exerted by the hospital bed and send it to the host 01. After that, the patient can move onto the hospital bed independently or with the help of relevant personnel. At this time, the pressure detection component 02 can generate a corresponding second electrical signal according to the second pressure exerted by the hospital bed and send it to the host 01. The host 01 can generate corresponding patient weight data according to the difference between the first electrical signal and the second electrical signal, so as to realize the measurement of the patient's weight.

[0041] Specifically, in this embodiment, when the host 01 receives the first electrical signal, it can also instruct the host 01 to clear the first electrical signal. After that, the host 01 can directly generate corresponding patient weight data according to the received second electrical signal, and can also realize the measurement of the patient's weight.

[0042] Specifically, the hospital bed can first support the patient and then be moved onto the pressure detection component 02. At this time, the host 01 can measure the total weight of the patient and the hospital bed based on the electrical signal transmitted by the pressure detection component 02, and can determine the patient's weight based on the known weight of the hospital bed.

[0043] It can be understood that for a typical load cell, the weighing part composed of the load cell and the weighing body can be equivalent to a second-order system. This model consists of mass, elasticity, and a damper. Studying the system model is very necessary for understanding the basic characteristics of dynamic weighing. In practical applications, when the patient first gets on the hospital bed, the impact force on the pressure detection component 02 is relatively large, but for the system, its impact is only relatively large at startup, and it does not affect the final accuracy of the system at startup. Moreover, the system will adjust immediately after the impulse disappears, ensuring the accuracy of the system.

[0044] It should be noted that for a long time, it has been relatively difficult to weigh critically ill and bedridden patients. In the past, when measuring the weight of the above-mentioned special critically ill patients, the suspension method or the flat-bed patient moving weighing method was mostly used. This is not only troublesome to operate but also brings many inconveniences to medical staff. For critically ill patients, frequent moving will exacerbate the deterioration of the condition. However, so far, the weighing beds that can be used for in-bed weight measurement are too expensive, the measurement data is single, and they can only be used for one bed at a time. The inventor of the present utility model designed and developed a hospital bed intelligent scale that can not only perform real-time monitoring but also perform temporary detection, is convenient to use, has a lower cost, has more measurement data, and has a simple usage method according to clinical needs. It aims to solve the problem of weight measurement suitable for critically ill and bedridden patients, and creatively combines with bioelectrical impedance measurement technology. At the same time, it can also monitor the patient's basal metabolic rate, fat rate, body mass index, body water rate, bone mass, etc. Thereby helping medical staff better judge the patient's condition.

[0045] As Figure 1 shown, the hospital bed includes a bed body 7 and a movement component; the movement component is installed at the bottom of the bed body 7 and is used to support the weight of the bed body 7 and drive the bed body 7 to move.

[0046] The pressure detection component 02 is also used to detect the electrical signal of the pressure of the bed body 7 with the movement component and send it to the host 01.

[0047] As Figure 1 shown, the height of the bed in the bed body can be 480 millimeters.

[0048] It is understandable that the hospital bed with a moving component can also be initially located on the pressure detection component 02. At this time, the pressure detection component 02 can generate an electrical signal according to the pressure exerted by the hospital bed and send it to the host 01. Subsequently, the patient can move onto the hospital bed by themselves or with the help of relevant personnel. At this time, the pressure exerted on the pressure detection component 02 by the hospital bed increases, and the pressure detection component 02 will generate a new electrical signal and send it to the host 01. The host 01 can generate patient weight data based on this electrical signal.

[0049] Optionally, the pressure detection component 02 includes at least one sub-component, and each sub-component includes:

[0050] A pressure sensor for detecting the pressure of the moving component to generate a corresponding electrical signal and send it to the host 01;

[0051] An anti-slip groove is provided on the top of the pressure sensor for contacting and stabilizing the moving component;

[0052] Anti-slip silicone c is provided between the bottom of the pressure sensor and the floor to prevent sliding.

[0053] The host 01 is also used to generate and display patient weight data based on the electrical signals sent by all pressure sensors.

[0054] Optionally, the pressure sensor is a resistive pressure sensor.

[0055] Optionally, the moving component includes a plurality of rotating wheels 8 for supporting the weight of the bed body 7 and driving the bed body 7 to move.

[0056] Among them, the resistive pressure sensor has the advantages of long service life, simple structure, good frequency response characteristics, easy miniaturization, relatively high accuracy and wide application, and can effectively achieve pressure detection.

[0057] Specifically, the pressure detection component 02 can be a pressure plate, and its structure diagram can be as Figure 2 shown, with a width of 20 cm, a thickness of 3 cm, a length of 110 cm, an output end connected with a shielded cable, and a resistive sensor element a arranged inside. An anti-slip groove is provided above the sensor for clamping the rotating wheel 8 of the hospital bed, and an anti-slip silicone c bottom is arranged at the bottom.

[0058] Optionally, the host 01 includes:

[0059] A chassis 1;

[0060] A processor installed inside the chassis 1, connected to the pressure detection component 02 through a first shielded cable 61, for generating patient weight data based on the electrical signals sent by the pressure detection component 02;

[0061] The display 2 is set at the front of the chassis 1 and is connected to the processor, and is used to receive and display the patient's weight data sent by the processor.

[0062] Optionally, the system further includes two electrode patch groups 9, which are respectively used to be pasted on the skin of both arms of the patient; each electrode patch group 9 is connected to the processor through a second shielded cable 62.

[0063] The processor is further configured to send a microcurrent to the patient through the electrode patch group 9, receive the microcurrent flowing through the patient, measure the body fat, basal metabolic rate, body moisture and / or bone mass of the patient according to the microcurrent flowing through the patient, and send them to the display 2 for display.

[0064] It should be noted that since the conductivity of various components in the body muscles is different, the current uses the muscles as a conductor in the body. Therefore, according to the different ease of current flowing through the muscles, the body weight of the human body can be measured. According to the bioelectrical impedance measurement principle, using bioelectrical impedance analysis method, the electrode patches are directly pasted on the skin of both arms of the patient, with three patches on each arm, so that the microcurrent passes through the whole body (without causing harm). The electrode patches detect the content of fat, protein and carbohydrates in the body through the current. Usually, fat does not conduct electricity and muscles are easy to conduct electricity. The amount of fat is judged according to the resistance value in the closed loop. At the same time, the body fat will be comprehensively analyzed according to the patient's age, height, weight, etc. In addition, the basal metabolic rate, body moisture and bone mass can also be measured.

[0065] Among them, the electrode patch group 9 can be composed of Figure 1 multiple electrode patches. The electrode patches can be pasted on the patient's skin, used to receive the microcurrent of the host 01 and send it to the patient, and also used to receive the microcurrent flowing through the patient and return it to the host 01.

[0066] Specifically, the first shielded cable 61 can be a shielded cable for connecting the resistive pressure sensor and the host 01, and the second shielded cable 62 can be a shielded cable for connecting the electrode patch group 9 and the host 01.

[0067] Specifically, Figure 1 the first interface 5 and the second interface 4 in

[0068] Optionally, the system further includes:

[0069] a power supply, electrically connected to the processor and the display 2, and used to supply power to the processor and the display 2.

[0070] It should be noted that a backup power supply can also be set in this embodiment.

[0071] Optionally, the host 01 further includes:

[0072] A power switch 3, which is arranged on the power supply circuit connecting the power supply processor and the display 2, and is used to disconnect or close the power supply circuit.

[0073] Specifically, the power switch 3 can be arranged on the host 01.

[0074] Specifically, when it is necessary to measure the weight of a patient, connect the resistive pressure sensors a and b to the first interface 5 through a shielded cable, and turn on the power switch 3 of the intelligent scale system, then the weight of the patient can be measured. The weighing result is displayed on the display 2. If necessary, the data can be exported. If it is necessary to monitor the weight change for a period of time, you can choose to draw a weight curve for export to facilitate recording.

[0075] If it is necessary to measure indicators such as body fat, basal metabolic rate, body water, and bone mass of a patient, stick six electrode patches on the skin of both arms of the patient, three on each side. The measurement results are displayed on the display 2 and the results can be exported. After the measurement is completed, remove the electrode patches and turn off the power switch 3.

[0076] The patient weight measurement system proposed in this embodiment may include a pressure detection component 02 and a host 01 that are connected. The pressure detection component 02 is installed on the floor of the patient weight measurement space. When the patient is on the hospital bed and the hospital bed is on the pressure detection component 02, the pressure detection component 02 can bear the pressure exerted by the hospital bed and generate corresponding electrical signals according to the pressure, and send the electrical signals to, and measure the patient's weight according to the electrical signals and the known weight of the hospital bed. The utility model can measure the weight of critically ill patients on the hospital bed without the need for critically ill patients on the hospital bed to stand, adjust their postures, and move their bodies, which can effectively reduce the risk of deterioration of the condition of critically ill patients.

[0077] Such as Figure 3 As shown, the present embodiment may include a processor, a memory, and a display 2. The processor may include an amplifier, an analog-to-digital converter, a processor, a main control IC chip, and a human body impedance measurement circuit. Among them, serial clock line (Serial Clock Line, SCL), serial data line (Serial DataLine, SDA), and enable signal (Enable Signal, EN) communication can be carried out between the main control IC and the human body impedance measurement circuit.

[0078] It can be understood that the processor in this embodiment can be a single-chip microcomputer. The data to be processed by the processor in this embodiment is relatively large, but the requirement for speed is not high. The analog-to-digital converter can select a 24-bit analog-to-digital converter with high resolution and no error code. It has a complete analog input front end integrated on-chip and has a 128-fold amplification ability, and can directly measure the low-frequency weak signal output by the sensor.

[0079] Specifically, when a patient lies on the hospital bed and generates a certain pressure, the pressure is applied to the pressure sensor. The sensor deforms, causing a change in impedance. At the same time, the excitation voltage changes, and a changing analog signal is output. This signal is amplified by the amplifier and then output to the analog-to-digital converter. It is converted into a digital signal that is convenient for processing and output to the processor for arithmetic control. The processor outputs this result to the display 2 according to the keyboard command and the program until this result is displayed.

[0080] It should also be noted that in the related art, patients need to be measured in a standing position or by being moved on a flatbed, and only weight data can be measured, which is of limited help for clinical treatment. Only temporary single measurements can be carried out, or a specific weighing bed is used for measurement.

[0081] For the patient weight measurement system proposed in this embodiment, the patient does not need to stand or move the body from the hospital bed, and can be measured while lying on the bed, which can minimize the risks and burdens of the patient and medical staff. This embodiment applies bioelectrical impedance measurement technology, and at the same time can also monitor the patient's basal metabolic rate, fat rate, body mass index, body water rate, bone mass, etc., to help medical staff better judge the patient's condition. The patient weight measurement system in this embodiment has a detachable feature, can perform single data sampling, can be used in combination with any model of ordinary hospital bed, can effectively improve the use efficiency, and indirectly reduce the purchase cost.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A patient weight measurement system, characterized in that, Comprising: A pressure detection component, in a plate-like structure, installed on the floor of the patient weight measurement space, for detecting the electrical signals of the hospital bed and / or the patient's pressure; A main unit, connected to the pressure detection component through a first shielded cable, for receiving the electrical signals transmitted by the pressure detection component, and generating and displaying the patient weight data according to the received electrical signals; Wherein, the hospital bed includes a bed body and a movement component; the movement component is installed at the bottom of the bed body, for supporting the weight of the bed body and driving the bed body to move; The pressure detection component is further used for detecting the electrical signals of the pressure of the bed body with the movement component, and sending them to the main unit; Wherein, the pressure detection component includes at least one sub-component, and each sub-component includes: A pressure sensor, for detecting the pressure of the movement component, to generate corresponding electrical signals and send them to the main unit; An anti-slip groove, arranged on the top of the pressure sensor, for contacting and firmly clamping the movement component; Anti-slip silica gel, arranged between the bottom of the pressure sensor and the floor, for preventing sliding; Wherein, the main unit includes: A chassis; A processor, installed inside the chassis, connected to the pressure detection component through the first shielded cable, for generating the patient weight data according to the electrical signals sent by the pressure detection component; A display, arranged at the front of the chassis, connected to the processor, for receiving and displaying the patient weight data sent by the processor; Wherein, the system further includes two electrode patch groups, respectively for sticking on the skin of the two arms of the patient; each electrode patch group is connected to the processor through a second shielded cable; The processor is further used for sending a microcurrent to the patient through the electrode patch group, receiving the microcurrent flowing through the patient, and measuring the body fat, basal metabolic rate, body moisture and / or bone mass of the patient according to the microcurrent flowing through the patient, and sending them to the display for display.

2. The system according to claim 1, characterized in that, The pressure sensor is a resistive pressure sensor.

3. The system according to claim 1, wherein The movement component includes a plurality of runners for supporting the weight of the bed body and driving the bed body to move.

4. The system according to claim 1, wherein The system further includes: A power supply, electrically connected to the processor and the display, for supplying power to the processor and the display.

5. The system according to claim 1, wherein The main unit further includes: a power switch, arranged on the power supply circuit connecting the processor and the display, for disconnecting or closing the power supply circuit.

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