A device for detecting the degree of limb development of a newborn

By using non-contact wind stimulation and sensor detection, the problem of harm to newborns caused by newborn limb development detection devices has been solved, achieving high-precision and safe limb development detection.

CN116369900BActive Publication Date: 2026-04-24CAPITAL INST OF PEDIATRICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CAPITAL INST OF PEDIATRICS
Filing Date
2023-02-28
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing newborn limb development testing devices require manual operation by medical staff, which can easily cause injury to the newborn's limbs, and the measurements are not accurate enough.

Method used

A non-contact detection device was designed, comprising a measuring platform, measuring disc, limiting rod, lifting platform, slide rail, slider, connecting rod, protruding plate, heating tube, fan, binding strap, position sensor, and camera. The device stimulates the newborn's limb movement through wind force and detects limb length and range of motion by combining position sensor and camera.

Benefits of technology

It enables contactless and high-precision limb development detection, avoiding harm to newborns, and can be weighed under safe and constant temperature conditions, improving the accuracy and safety of the detection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses the technical fields of medical devices, and is a kind of for newborn's limb development degree detection device, including measuring table, the surface of measuring table is connected with measuring disc, the surface of measuring table is connected with mounting seat, limiting rod is connected on mounting seat, measuring mechanism is connected on limiting rod, the measuring mechanism includes the lifting platform connected on screw rod, the surface of lifting platform is connected with slide rail, and slide rail is located above measuring disc, and slide groove is arranged in slide rail, the structure of the present application can be detected by measuring mechanism, and the limb development degree of newborn, and measuring mechanism stimulates newborn limb activity by non-contact wind, so that newborn is in the state of self-control activity, the limb activity range of newborn is monitored, and the limb length of newborn is detected, and the limb development degree of newborn is detected by actual length and actual activity range.
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Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a device for detecting the limb development of newborns. Background Technology

[0002] According to the search, Chinese patent number CN88212013.1 discloses a newborn physical development measuring device. It is a portable newborn physical development measuring device composed of a scale shell (1), a base tray (8), a left drawer tray (7), a right drawer tray (2), a music rhythm box (28), photoelectric indicator lights (13, 14, 15, 16) and a lever scale body (22, 23, 24, 25). The scale shell (1) is a trapezoidal shell made of plastic plate or metal sheet with a measuring scale display hole (11), a weight movement hole (10), a sliding weight movement hole (12), a weight switch hole (17) and various photoelectric indicator light round holes (13, 14, 15, 16). The upper side plate of the scale shell is in contact with the lever point of the lever scale body by a welded fulcrum. The upper side plate has two rail grooves (9) that are connected to the rails (19) under the base tray (8).

[0003] The beneficial effects of the above-mentioned device are as follows: It combines the principle of a lever scale with standard measurements to form a weighing instrument with a lever scale body installed inside the scale body shell and a tray connected to the scale body shell. A standard steel ruler, a length guide rod, and a guide plate are fixed inside the tray. It can be used to measure the plantar length, crown-rump length, body length, and weight of newborns. It is convenient to carry, accurate in measurement, and can measure multiple physical development data of newborns on the same measuring instrument.

[0004] However, in practical applications, most existing neonatal limb development detection devices require manual operation by medical staff. The medical staff need to control the newborn's limbs to a certain extent to accurately measure the newborn's limb development. Since the newborn's limb bones are relatively fragile, medical staff can easily cause injury to the newborn during manual control. Therefore, we propose a new limb development detection device for newborns. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting the limb development of newborns, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for detecting the limb development of newborns, comprising a measuring platform, a measuring disc connected to the surface of the measuring platform, a mounting base connected to the surface of the measuring platform, a limiting rod connected to the mounting base, a measuring mechanism connected to the limiting rod, the measuring mechanism comprising a lifting platform connected to a lead screw, a slide rail connected to the surface of the lifting platform above the measuring disc, a slide groove provided in the slide rail, a slider inserted in the slide groove, the lower end surface of the slider penetrating the slide groove and connected to four sets of connecting rods equidistantly distributed in a circle, the lower ends of the four sets of connecting rods respectively connected to a set of protruding plates and three sets of image detection cameras, a heating tube mounted on the surface of the protruding plate, a fan connected to the tail end of the heating tube and an air outlet provided at the front end, the measuring mechanism comprising two sets of binding straps tied to a single limb of the newborn, the two sets of binding straps respectively located at the front end and the end end of the limb and respectively connected to position sensor B and position sensor A, a mounting frame connected to the surface of the measuring platform, and a display connected to the surface of the mounting frame.

[0007] Preferably, a lead screw is connected to the surface of the mounting base, a top plate is connected to the upper end of the mounting frame, a motor A is connected to the top plate, the output shaft of the motor A is connected to the lead screw, and the lifting platform is mounted on the matching lead screw.

[0008] Preferably, the cross-sections of both the groove and the slider are set to a "T" shape.

[0009] Preferably, a motor B is connected to the surface of the convex plate, and the output shaft of the motor B is connected to the heating tube in a driving connection.

[0010] Preferably, the surface of the lifting platform is provided with protrusions, the surface of the protrusions is connected to a motor C, the output shaft of the motor C is connected to a control gear, and the inner wall of the slider is provided with internal teeth that mesh with the control gear.

[0011] Preferably, a fixed rod is connected to the inner surface of the lifting platform, and a suspension rope is connected to the surface of the fixed rod at the center of the lifting platform, with a bell tied to the bottom of the suspension rope.

[0012] Preferably, a weighing device is connected to the surface of the measuring platform, and the measuring pan is connected to the weighing device.

[0013] Preferably, a heater is connected to the lower surface of the measuring platform, and the heater is connected to the measuring plate.

[0014] Preferably, the display is equipped with a control system, which includes an image processing module and a data calculation module.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This solution, through the structural design of the measuring mechanism, can detect the limb development of newborns. The measuring mechanism uses non-contact wind to stimulate the newborn's limb movement, allowing the newborn to control their own movements. By monitoring the range of limb movement and detecting the length of the newborn's limbs, the limb development of the newborn can be detected by measuring the actual limb length and the actual range of movement.

[0017] 2. Through the structural design of the measuring mechanism, this solution can achieve multi-angle and multi-position stimulation and sampling while conducting non-contact testing, thereby achieving high-precision test results and avoiding limb injury to newborns.

[0018] 3. This solution allows for the weighing of newborns during the limb measurement process using a measuring device, and all operations are conducted under safe and constant temperature conditions, thereby effectively reducing the risk of newborn injury. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a rear view schematic diagram of the structure of the present invention;

[0021] Figure 3 This is a bottom view of the structure of the present invention;

[0022] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the measuring mechanism structure of the present invention;

[0024] Figure 6 This is an exploded view of the measuring mechanism structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the measurement system of the present invention.

[0026] In the diagram: 1. Measuring platform; 2. Measuring disc; 3. Mounting base; 4. Lead screw; 5. Limiting rod; 6. Mounting frame; 7. Top plate; 8. Motor A; 9. Measuring mechanism; 901. Lifting platform; 902. Slide rail; 903. Slide groove; 904. Slider; 905. Connecting rod; 906. Protruding plate; 907. Motor B; 908. Heating tube; 909. Fan; 910. Image detection camera; 911. Protrusion; 912. Motor C; 913. Control gear; 914. Internal tooth pattern; 915. Fixing rod; 916. Suspension rope; 917. Bell; 10. Weighing device; 11. Heater; 12. Display; 13. Binding strap; 14. Position sensor A; 15. Position sensor B. Detailed Implementation

[0027] Example 1

[0028] Please see Figure 1-7 The present invention provides a technical solution:

[0029] A device for detecting limb development in newborns includes a measuring plate 2 connected to the surface of a measuring platform 1. When a newborn needs to have their limb development detected, the newborn is placed on the measuring plate 2, and the measuring mechanism 9 installed above the measuring platform 1 operates, allowing for non-contact detection of the newborn, thereby avoiding infection or physical harm to the newborn.

[0030] The surface of the measuring platform 1 has a mounting base 3 located behind the measuring tray 2. Two sets of limiting rods 5 and a set of lead screws 4 are connected inside the mounting base 3. The lead screws 4 and limiting rods 5 are perpendicular to the surface of the measuring platform 1 and are distributed in parallel. Simultaneously, a mounting frame 6 is connected to the surface of the measuring platform 1. A top plate 7 is connected to the upper end of the mounting frame 6. A motor A8 is connected to the surface of the top plate 7. The output shaft of the motor A8 is connected to the lead screw 4, allowing the motor A8 to drive the lead screw 4 to rotate when it is turned on. The measuring mechanism 9 is connected to the lead screw 4 and the limiting rods 5. When the motor A8 drives the lead screw 4 to rotate, it can control the measuring mechanism 9 to slide on the surfaces of the lead screw 4 and the limiting rods 5, further enabling the measuring mechanism 9 to rise and fall on the surface of the measuring platform 1. This allows the measuring mechanism 9 to rise above the surface of the measuring platform 1 when not in use, facilitating the placement of the newborn on the measuring tray 2 or the disinfection and cleaning of the surfaces of the measuring platform 1 and the measuring tray 2.

[0031] The measuring mechanism 9 includes a lifting platform 901 that is adapted to the surface of the lead screw 4. When the motor A8 drives the lead screw 4 to rotate in the lifting platform 901, the lifting platform 901 can be controlled to slide on the surface of the lead screw 4. Two sets of mounting seats 3 are also inserted in the lifting platform 901 for limiting support, so that the lifting platform 901 can be lifted more stably.

[0032] The surface of the lifting platform 901 is connected to a slide rail 902. The slide rail 902 is ring-shaped and located directly above the measuring plate 2, so that the lifting platform 901 drives the slide rail 902 to rise and fall above the measuring plate 2 during the lifting process. The slide rail 902 is provided with a slide groove 903, and a slider 904 is inserted into the slide groove 903. The cross-section of both the slide groove 903 and the slider 904 is set as "T" shaped, so that the slider 904 can slide stably in the slide groove 903 and rotate in the slide rail 902, so that the slider 904 can rotate around the newborn above the measuring plate 2.

[0033] The lower surface of the slider 904 passes through the slide groove 903 and is connected to four sets of connecting rods 905 that are equidistantly distributed in a circle. The lower end of one set of connecting rods 905 is connected to a protruding plate 906, and the surface of the protruding plate 906 is connected to a motor B907. The output shaft of the motor B907 is connected to a heating tube 908. The tail end of the heating tube 908 is connected to a fan 909 and the front end is provided with an air outlet. When the fan 909 is turned on, it generates wind and blows it out from the heating tube 908. The blown wind will stimulate the newborn placed on the surface of the measuring plate 2, causing the newborn's limbs to make a stimulation response.

[0034] Before the newborn is placed on the surface of the measuring tray 2, straps 13 are tied around each of the four limbs. Two sets of straps 13 are tied around each limb. A position sensor A14 is connected to the strap 13 at the end of the limb, and a position sensor B15 is connected to the strap 13 at the front of the limb. By measuring the spatial position changes of the position sensors A14 and B15, the range of motion of the newborn's limbs can be detected. Furthermore, the length of the newborn's limbs can be detected during the limb movements, thereby enabling the assessment of the newborn's limb development.

[0035] Furthermore, each of the other three sets of connecting rods 905 is connected to a screen detection camera 910, so that while the fan 909 generates wind to stimulate the newborn, the three sets of screen detection cameras 910 can detect the newborn's limb movement and detect the range of the newborn's limb movement. At the same time, the detection data will be transmitted to the control system in the display 12 connected to the mounting bracket 6, so that the control system can calculate the newborn's limb development degree based on the screen detection camera 910.

[0036] When the fan 909 generates wind to stimulate the newborn, the newborn's limbs react and move. At this time, the image detection camera 910 captures the movement and uploads it to the control system on the display 12. The control system analyzes the detected image through the image processing module. If the newborn's limbs in the detected image are straight and extended, then position sensors A14 and B15 are on the same straight line, and the straight line represents the length of the newborn's limbs. At this time, the spatial positions of position sensors A14 and B15 are recorded, with their spatial coordinates being (X1, Y2, Z3) and (X2, Y2, Z2) respectively, and the coordinate data is transmitted to the control system. The data processing module in the control system then calculates the coordinate data of position sensors A14 and B15 to obtain the straight-line distance between position sensors A14 and B15. The calculation formula is as follows:

[0037] d = sqrt{(X1-X2)} 2 +(Y1-Y2) 2 +(Z1-Z2) 2}

[0038] The newborn's limb length was further determined, and based on the calculated limb length and range of motion, the newborn's limb development degree was further inferred.

[0039] Furthermore, the heating element 908 can heat the air blown out by the fan 909, so that the warm air acts on the surface of the newborn's skin, thereby preventing the newborn from catching a cold due to cold air.

[0040] At the same time, motor B907 can control the heating tube 908 to rotate, so that the heating tube 908 can be stimulated from different angles, thereby better obtaining the newborn's limb movement response;

[0041] Furthermore, the surface of the lifting platform 901 is provided with protrusions 911, and a motor C912 is connected to the surface of the protrusions 911. The output shaft of the motor C912 is connected to a control gear 913, and the inner wall of the slider 904 is provided with internal teeth 914 that mesh with the control gear 913. When the motor C912 is turned on, it drives the control gear 913 to rotate, which in turn meshes with the internal teeth 914 to drive the slider 904 to rotate. This further controls the internal teeth 914 to rotate around the newborn within the lifting platform 901, allowing stimulation of the newborn from different directions and positions, and enabling image acquisition from different angles, thereby improving the accuracy of detection. The detection height of the measuring mechanism 9 can also be adjusted synchronously.

[0042] Meanwhile, the entire structure of the measuring mechanism 9 operates without direct contact with the newborn, thus avoiding infection and harm to the newborn.

[0043] A weighing device 10 is connected to the surface of the measuring platform 1, and a measuring pan 2 is connected to the weighing device 10, so that after the newborn is placed on the measuring pan 2, the weighing device 10 can weigh the newborn.

[0044] A heater 11 is connected to the lower surface of the measuring platform 1. The heater 11 is connected to the measuring plate 2, so that the measuring plate 2 can be heated after the heater 11 is turned on, so that the measuring plate 2 is always kept at a constant temperature, thereby ensuring that the newborn's body temperature is normal.

[0045] Furthermore, the developmental data from the measuring device 9, the weighing data from the weighing device 10, and the heating data from the heater 11 can all be displayed on the monitor 12, making it convenient for medical staff to operate and manage.

[0046] A fixing rod 915 is connected to the inner surface of the lifting platform 901. A hanging rope 916 is connected to the surface of the fixing rod 915 and is located at the center of the lifting platform 901, so that the hanging rope 916 is perpendicular to the top of the measuring plate 2. A bell 917 is tied to the bottom of the hanging rope 916. When the measuring mechanism 9 is testing the newborn, the bell 917 will make a sound to attract the newborn's attention, thereby avoiding the newborn's fear.

[0047] Furthermore, the Bell 917 can be replaced with other toys or items that can attract newborns.

Claims

1. A device for detecting limb development in newborns, comprising a measuring platform (1), characterized in that: The measuring platform (1) is connected to a measuring disk (2) and a mounting base (3). A limit rod (5) is connected to the mounting base (3), and a measuring mechanism (9) is connected to the limit rod (5). The measuring mechanism (9) includes a lifting platform (901) connected to a lead screw (4). A slide rail (902) is connected to the surface of the lifting platform (901) and is located above the measuring disk (2). A slide groove (903) is provided in the slide rail (902), and a slider (904) is inserted in the slide groove (903). The lower surface of the slider (904) penetrates the slide groove (903) and is connected to four sets of connecting rods (904) that are equidistantly distributed in a circle. 5) The lower ends of the four sets of connecting rods (905) are respectively connected to a set of protruding plates (906) and three sets of image detection cameras (910). The surface of the protruding plate (906) is equipped with a heating tube (908). The tail end of the heating tube (908) is connected to a fan (909) and the front end is provided with an air outlet. The measuring mechanism (9) includes two sets of binding straps (13) tied to a single limb of the newborn. The two sets of binding straps (13) are located at the front end and the end end of the limb respectively and are respectively connected to position sensor B (15) and position sensor A (14). The surface of the measuring table (1) is connected to a mounting bracket (6), and the surface of the mounting bracket (6) is connected to a display (12). The surface of the mounting base (3) is connected to a lead screw (4), the upper end of the mounting frame (6) is connected to a top plate (7), a motor A (8) is connected to the top plate (7), the output shaft of the motor A (8) is connected to the lead screw (4) for transmission, and the lifting platform (901) is installed on the matching lead screw (4). The cross-sections of the groove (903) and the slider (904) are both set in a "T" shape; The surface of the protruding plate (906) is connected to a motor B (907), and the output shaft of the motor B (907) is connected to the heating tube (908) in a transmission connection. The surface of the lifting platform (901) is provided with protrusions (911), and the surface of the protrusions (911) is connected to a motor C (912). The output shaft of the motor C (912) is connected to a control gear (913). The inner wall of the slider (904) is provided with internal teeth (914) that mesh with the control gear (913). A fixed rod (915) is connected to the inner surface of the lifting platform (901), and a hanging rope (916) is connected to the surface of the fixed rod (915) and is located at the center of the lifting platform (901). A bell (917) is tied to the bottom of the hanging rope (916).

2. The limb development detection device for newborns according to claim 1, characterized in that: The surface of the measuring platform (1) is connected to a weighing device (10), and the measuring pan (2) is connected to the weighing device (10).

3. The limb development detection device for newborns according to claim 1, characterized in that: A heater (11) is connected to the lower surface of the measuring platform (1), and the heater (11) is connected to the measuring plate (2).

4. The limb development detection device for newborns according to claim 1, characterized in that: The display (12) is equipped with a control system, which includes a screen processing module and a data calculation module.

Citation Information

Patent Citations

  • Physique-developing surveying unit for newborn

    CN2041555U

  • Newborn exercise development evaluation system, method and device and storage medium

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  • Height and weight measuring device for neonatology department

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