A kind of pediatrician examines with searchlight device

Abstract

The application discloses a kind of pediatrician examination with probe light device in the technical field of medical devices, including handle main body and with the illumination head of handle main body front end fixed connection, the illumination head includes: shell, flexible substrate, the side of flexible substrate away from handle main body is fixedly connected with several luminous elements, and the other side of flexible substrate is fixedly connected with magnetic body in the position corresponding with luminous element;Excitation driving plate, the excitation coil group is established on excitation driving plate, and excitation coil group is one-to-one corresponding with magnetic body;Controller, with luminous element and excitation coil signal connection.The application is combined with non-contact electromagnetic drive by suspending tension flexible substrate, and the partial deformation of flexible substrate is directly driven by magnetic field to deflect luminous element;By integrating visual perception and closed-loop control, automatically identify and real-time follow examination focus to carry out light beam angle adjustment, pre-judge pupil area to realize light beam fast avoidance and brightness synchronous attenuation, guarantee the safety of children's eye.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically a pediatric examination probe. Background Technology

[0002] In pediatric clinical examinations, doctors frequently need to observe and manipulate cavities such as the child's mouth, throat, ear canal, and nasal cavity. Good lighting is fundamental to ensuring the accuracy of the examination and the safety of the procedure. Currently, the lighting methods commonly used by pediatricians during examinations mainly consist of medical flashlights, head-mounted examination lights, or simple examination lights with fixed lamp heads. The beam angle of these traditional lighting devices is usually fixed or can only be roughly adjusted manually, which presents the following problems in practical use:

[0003] First, fixed-angle lighting is difficult to adapt to examination sites of different depths and shapes. Doctors need to frequently adjust their hand position or have the child change position to obtain ideal lighting, which is inconvenient and can easily create blind spots or mucosal reflections, affecting the observation results.

[0004] Secondly, existing pediatric examination lighting devices generally lack intelligent sensing and automatic adjustment capabilities for the examination process. For example, they cannot automatically identify and adapt the beam angle to the doctor's focus during the examination, nor can they proactively avoid direct light when the child moves or the light may shine directly into their eyes. Strong light entering the eyes not only causes discomfort but also poses a potential retinal safety hazard. Although some general lighting systems have introduced automatic or manual brightness adjustment, most suffer from abrupt adjustment methods and visible flicker, which can easily exacerbate eye fatigue and discomfort.

[0005] Therefore, in response to the specific needs of pediatricians during examinations, it is necessary to propose a detection device that can achieve flexible multi-angle illumination while ensuring the safety of strong light detection. Summary of the Invention

[0006] To address the aforementioned issues, the present invention aims to provide a pediatric examination illumination device. This device combines a suspended, tensioned flexible substrate with a non-contact electromagnetic drive, using a magnetic field to directly drive localized deformation of the flexible substrate to achieve multi-angle deflection of the light-emitting element. This eliminates operational noise and mechanical wear, meeting the quiet and hygienic requirements of pediatric examinations. Furthermore, by integrating visual perception and closed-loop control, it can automatically identify and adjust the beam angle in real time, predicting the pupil area to achieve rapid beam avoidance and synchronous brightness attenuation, ensuring the safety of the child's eyes. Combined with flicker-free constant current dimming and dynamic ambient light compensation, it provides a quiet, precise, safe, and highly intelligent lighting tool for pediatric clinical examinations.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: A pediatric examination probe device, comprising a handle body and an illumination head fixedly connected to the front end of the handle body, wherein the illumination head includes:

[0008] The outer casing has a transparent sealing lens fixedly connected to its front end.

[0009] The flexible substrate is made of elastic material. The outer periphery of the flexible substrate is fixedly connected to the inner wall of the surgical procedure, and the flexible substrate is in a suspended and tensioned state. Several light-emitting elements are fixedly connected to the side of the flexible substrate away from the main body of the handle, and magnetic bodies are fixedly connected to the other side of the flexible substrate at the positions corresponding to the light-emitting elements.

[0010] The excitation drive plate is fixedly connected to the inner wall of the outer shell. The excitation drive plate is provided with several excitation coil groups, each of which corresponds to a magnetic body. The excitation coil groups are used to generate a magnetic field when energized, driving the flexible substrate to produce local elastic deformation.

[0011] The controller is fixedly connected to the inner wall of the handle body and is connected to the light-emitting element and the excitation coil. The controller is used to output dimming current and excitation current.

[0012] The basic principle of this invention lies in achieving continuous adjustment of the beam emission angle through controllable elastic deformation. In its natural state, the flexible substrate maintains its initial planar shape, and each light-emitting element emits a beam of light directly forward; when the substrate is subjected to a directional torque locally, the corresponding area undergoes controllable elastic deformation, causing the light-emitting element at that location to deflect accordingly, thus changing its beam emission direction.

[0013] The aforementioned directional torque is generated based on the principle of non-contact electromagnetic drive. The controller outputs excitation current with adjustable direction and amplitude to different coils. After the coils are energized, they generate polarized magnetic fields, which produce attractive or repulsive forces with the corresponding magnetic bodies. By applying differential current drive to the orthogonally arranged coils corresponding to the same magnetic body, a lateral force in any direction can be synthesized on the magnetic body, thereby applying a precisely controllable bending torque to the corresponding area of ​​the flexible substrate, realizing arbitrary deflection of the light-emitting element in two-dimensional space. When the excitation current is removed, the magnetic field disappears, and the flexible substrate automatically returns to its initial planar state due to the elastic restoring force of its own material, without the need for an additional return mechanism.

[0014] At the control level, the system uses a camera to capture real-time images of the inspection area. The controller analyzes the images, identifies the inspection target or observation focus area, and calculates the required target deflection angle for each light-emitting element based on the target's spatial position information. This is then converted into the corresponding excitation coil's drive current parameters and output to the excitation drive board for execution. This closed-loop control process of perception-calculation-electromagnetic drive operates at high frequency, enabling the light beam to dynamically adjust in real time to follow the movement of the inspection focus, always maintaining optimal illumination coverage of the observed area. Simultaneously, the controller also predicts whether the light beam is about to enter the pupil's safe zone based on image analysis. Once a potential risk is detected, it quickly adjusts the excitation current of the corresponding coil to deflect the beam and simultaneously attenuate its brightness, thus achieving imperceptible protection for the child's eyes without interrupting overall illumination.

[0015] Furthermore, the flexible substrate is a polymer film, and the magnetic body is a radially magnetized magnetic base.

[0016] Furthermore, the excitation coil group includes at least four excitation coils, which are arranged in an orthogonal cross shape. The excitation coils are used to apply magnetic forces in at least two orthogonal directions to the corresponding magnetic bodies.

[0017] Furthermore, the front end of the handle body is threadedly connected to the rear end of the housing of the lighting head, and the joint is wrapped with an annular seal; the rear end of the lighting head is provided with a sealed waterproof connector, and the electrical leads of the light-emitting element and the excitation coil are connected to the controller inside the handle body through the sealed waterproof connector.

[0018] Furthermore, the handle body also contains an excitation drive module and a dimming module;

[0019] The excitation drive module is used to provide drive current to the excitation coil according to the control signal from the controller.

[0020] A dimming module is used to drive light-emitting elements with a constant current at a frequency higher than that perceived by the human eye.

[0021] Furthermore, the illumination head also contains a sensing component, which includes a camera, an infrared fill light, and an ambient light sensor. The camera lens faces the transparent sealed lens, and the infrared fill light is used to emit invisible infrared light.

[0022] A pediatric examination detection system includes a control unit that is signal-connected to the detection device, the control unit being configured to:

[0023] Acquire the images captured by the camera;

[0024] Identify the target or observation area based on the image;

[0025] Based on the identification results, the current output to the excitation coil is controlled to adjust the deflection angle of the corresponding light-emitting element; and / or, the brightness of each light-emitting element is adjusted.

[0026] Furthermore, the control unit is also configured to: according to the preset inspection part mode, call the pre-stored current parameter matrix, drive multiple light-emitting elements to deflect in coordination to an angle combination that matches the inspection part, so as to form a preset illumination spot.

[0027] Furthermore, the control unit is also configured to: identify the pupil region from the image in real time and predict the beam path of each light-emitting element;

[0028] When it is determined that the light beam of a certain light-emitting element is about to enter the pupil area, the current of its corresponding excitation coil is immediately adjusted to make the light-emitting element deflect quickly to avoid the pupil, and its light brightness is reduced simultaneously.

[0029] Once it is determined that the light beam has moved out of the pupil area, the light-emitting element is controlled to gradually return to its original deflection angle and brightness.

[0030] Furthermore, the control unit is also configured to: dynamically adjust the output brightness of the light-emitting element based on the ambient brightness detected by the ambient light sensor; and / or perform flicker-free dimming control on the light-emitting element.

[0031] The beneficial effects of this technical solution are as follows: (1) By using a suspended and tensioned flexible substrate and a non-contact electromagnetic drive structure, each light-emitting element is independently subjected to orthogonal magnetic force, enabling each LED bead to achieve two-dimensional continuous deflection and flexible adjustment of the beam angle. With the help of preset scene modes, different lighting forms such as focused spot, grazing illumination or narrow beam can be formed with one click, completely eliminating lighting dead angles and reflection interference in complex areas such as the oral cavity, pharynx, buccal mucosa, and gums.

[0032] (2) The pupil area is located in real time using an infrared camera and image recognition algorithm to predict the beam path. Once it is determined that the beam is about to enter the pupil's safe zone, the corresponding light-emitting element is quickly deflected to avoid it by adjusting the current of the excitation coil in a very short time, and the brightness is simultaneously reduced to a safe range. The other light-emitting elements that are not pointing towards the pupil maintain their original illumination state to avoid the image suddenly darkening. After the beam moves away from the pupil, the angle and brightness are gradually restored to avoid secondary stimulation caused by sudden changes in brightness, thus fundamentally ensuring the safety of the child's eyes and the cooperation of the examination.

[0033] (3) The examination sites such as the oral cavity, ear canal, and periorbital area are automatically identified by image recognition and the initial standard illuminance is matched. The ambient light sensor collects the ambient brightness in real time and dynamically adjusts the output to reduce the contrast between light and dark. High-frequency constant current dimming is used throughout the process, and there is no visible flicker, thus eliminating the visual discomfort caused by flicker from the source.

[0034] (4) Eliminate mechanical transmission components such as motors, gears, and connecting rods to eliminate operating noise, avoid disturbing children with mechanical noise, and create a quiet examination environment. On this basis, the front end of the lighting can achieve a fully sealed structure with no gaps or residues, making it easy to directly wipe and disinfect the surface and eliminate the risk of cross-infection. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an isometric view of the pediatric examination probe device in Embodiment 1 of the present invention.

[0037] Figure 2 This is a top view of the pediatric examination probe device in Embodiment 1 of the present invention.

[0038] Figure 3 for Figure 2 Sectional view of AA.

[0039] Figure 4 for Figure 3 Enlarged view of section B.

[0040] Figure 5 This is a schematic diagram of the operation of the pediatric examination probe system in Embodiment 1 of the present invention.

[0041] The reference numerals in the accompanying drawings include: 1, handle body; 101, controller; 102, excitation drive module; 103, dimming module;

[0042] 2. Illumination head; 201. Housing; 202. Transparent sealing lens; 203. Ambient light sensor; 204. Camera; 205. Flexible substrate; 206. Light-emitting element; 207. Magnetic body; 208. Excitation drive board; 209. Excitation coil; 210. Infrared supplementary light. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be described in further detail below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this invention can be combined with each other. The invention will now be described in detail with reference to the embodiments.

[0045] Example:

[0046] The basics are as follows: Figures 1 to 5 As shown: This embodiment describes the application of the above-mentioned pediatric examination probe device to the pharyngeal examination of a 3-year-old child with acute tonsillitis.

[0047] The specific implementation process is as follows: The doctor holds the main body 1 of the handle and presses the multi-function dial button on the side wall to start the device. The controller 101 inside the handle then completes initialization, sequentially performing power-on self-tests on the excitation drive module 102, the dimming module 103, and the sensing components in the illumination head 2. After the ring-shaped status indicator light on the side wall of the handle turns into a solid green light, the device enters the ready standby state. The doctor selects the oral and pharyngeal examination mode using a shortcut key. The controller 101 calls the pre-stored pharyngeal examination current parameter matrix and, according to the pre-calibrated deflection angle-current mapping formula:

[0048]

[0049] Perform the solution, where The horizontal deflection angle of the light-emitting element is 206. It is the vertical deflection angle. , This is the factory-calibrated angle scaling factor. , , , These represent the driving currents for the four excitation coils 209 arranged in a cross shape. The rated operating current of the coil is specified. The controller 101 outputs excitation current with corresponding amplitude and direction to the four sets of excitation coils 209 on the excitation drive board 208. After the four excitation coils 209 in each set of excitation coils 209 are orthogonally distributed in a cross shape, they generate a spatial magnetic field. This magnetic field interacts with the corresponding magnetic body 207 in a non-contact manner, and applies a lateral force towards the center to the light-emitting elements 206 on the flexible substrate 205 corresponding to the magnetic body 207. This causes the flexible substrate 205 to undergo local elastic deformation at the installation position of each light-emitting element 206, which drives the four light-emitting elements 206 to deflect synchronously towards the central axis of the device. This converges the four beams of light into the throat area at a preset depth in front of the device, forming a concentrated light spot with uniform central illumination, thus completing the preset illumination angle before inspection.

[0050] The doctor gently supports the child's chin with one hand to stabilize the head, while the other hand slowly brings the front end of the illumination head 2 closer to the child's mouth. The transparent sealing lens 202 at the front end of the illumination head 2 completely covers the opening, preventing droplets, saliva, and moisture from entering the illumination head 2, maintaining the cleanliness of the internal sealed chamber, and preventing internal components such as the excitation drive board 208 and flexible substrate 205 from being corroded by bodily fluids, while ensuring that the light can be emitted without obstruction. The sensing component simultaneously acquires visible light and infrared images, and the controller 101 uses a weighted pixel-level fusion algorithm to fuse the two images. The pixel grayscale values ​​of the fused image meet the requirements.

[0051]

[0052] in For infrared image pixel values, These are the pixel values ​​of a visible light image. and The fusion weights for the infrared and visible light channels are respectively, and satisfy the following conditions: The controller 101 adaptively adjusts the weighting ratio based on the detection results of the ambient light sensor 203; the lower the ambient brightness, the lower the weighting of the infrared channel. The larger the value, the better the image clarity in low-light environments without increasing visible light stimulation, thus providing high-quality image input for subsequent focus recognition and pupil detection.

[0053] The built-in image processing module of the controller 101 performs recognition and calculation on the real-time fused image, locates the front end of the tongue depressor held by the doctor and determines it as the current examination focus, and outputs the focus pixel coordinates. The controller 101 combines the focal length parameters and depth estimation values ​​of the device, converts the planar coordinates into the target deflection angle required by the light-emitting element 206 through the pinhole imaging model, and then corrects the output current of each excitation coil 209 in real time through a proportional closed-loop control algorithm, so that the center coordinates of the light spot are... Deviation from the focal coordinates , The light intensity is always close to zero. The change in the magnetic field force drives the elastic deformation of the corresponding area of ​​the flexible substrate 205 to change, so that the irradiation angle of each light-emitting element 206 changes synchronously with the movement of the tongue depressor. The light spot is always accurately projected onto the tonsils and posterior pharyngeal wall area, ensuring that the deep mucosa and tonsillar crypts are always under sufficient illumination, eliminating the lighting blind spots in the pharyngeal side wall, lower pole of the tonsils and other parts that exist in traditional fixed-angle light sources.

[0054] During the examination, the child twisted his head due to throat discomfort. To avoid accidentally injuring the child, the doctor removed the probe. The sensing component continuously acquired images and used infrared images to identify the position and range of the child's pupils in real time. The controller 101 performed facial landmark detection on the fused image and extracted the circumcircle parameter of the pupil region. ,in , The pixel coordinates of the pupil center. The equivalent radius of the pupil is used; simultaneously, combined with the current deflection angle of each light-emitting element 206, the light spot projection parameters of the corresponding light beam on the facial plane are calculated using the pinhole imaging projection model. ,in , The coordinates of the center of the light spot are The equivalent radius of the light spot; the controller uses the spatial distance formula:

[0055]

[0056] Calculate the pixel distance between the center of the light spot and the center of the pupil, when the following conditions are met. If the system detects a risk of the light beam directly hitting the pupil, it immediately triggers an avoidance logic. When it anticipates that the light beams from the two upper light-emitting elements 206 will enter the child's pupil area as the head moves, the controller 101 immediately outputs a reverse deflection current to the corresponding excitation coil 209. This drives the flexible substrate 205 to undergo outward elastic deformation at the corresponding position, causing the two light-emitting elements 206 to deflect rapidly outward, quickly moving the light spot out of the pupil area. Simultaneously, the dimming module 103 reduces the driving current of the corresponding light-emitting element 206, lowering its brightness to a safe low level for the eye. After the child's head returns to center and the light beam completely leaves the pupil area, the controller 101 controls the excitation current and dimming current to gradually restore them at a slow gradient, allowing the light-emitting elements 206 to smoothly return to their original angle and brightness, avoiding secondary stimulation to the child from sudden changes in brightness.

[0057] The brightness recovery process satisfies: ,in The target brightness value, To avoid the low brightness value, The preset time constant, To shorten the recovery process, a smooth, exponential gradient process is used to avoid abrupt changes in light and dark that could cause secondary stimulation to the child's eyes, while ensuring a rapid and stable recovery of the lighting effect.

[0058] Throughout the examination, the flexible substrate 205 relies on its own elasticity to support the light-emitting element 206 and achieves angle deflection without mechanical friction. The entire operation is noiseless and will not exacerbate the child's anxiety and fear. The illumination head 2 has a sealed structure, and its front surface can be directly wiped with medical alcohol for disinfection after use, effectively reducing the risk of cross-infection. The dimming module 103 drives the light-emitting element 206 with a constant current higher than the frequency perceived by the human eye, resulting in no visible flicker throughout the process. This reduces visual fatigue for doctors during prolonged clinical examinations, ultimately enabling rapid and clear observation and diagnosis of deep pharyngeal tissues even when the child's cooperation is limited, improving examination efficiency and diagnostic accuracy.

[0059] Example 2

[0060] The difference from the above embodiments is that this embodiment is a scenario in which the above-mentioned pediatrician examination probe is applied to the buccal gingiva and tooth surface examination for caries screening of deciduous molars in 6-year-old children.

[0061] The specific implementation process is as follows: After the doctor turns on the device by holding the main body 1 of the handle and selects the oral mucosa examination mode, the controller 101 calls the corresponding current parameter matrix and outputs differentiated current to the two sets of excitation coils 209 on one side of the excitation drive board 208, so that the corresponding magnetic body 207 is subjected to outward lateral magnetic force, which drives the flexible substrate 205 to produce elastic deformation on one side, causing the two light-emitting elements 206 on that side to deflect outward, forming a wall-grazing illumination angle; during the examination, the controller 101 performs highlight pixel statistics on the acquired oral images and calculates the proportion of highlight pixels in the image. This refers to the ratio of the number of pixels with grayscale values ​​higher than the highlight threshold to the total number of pixels; when When the preset threshold is exceeded, the controller gradually increases the outer deflection angle of the light-emitting element 206 according to the deflection angle-current mapping formula, thereby reducing specular reflection on the tooth surface and buccal mucosa through dynamic optimization of the grazing angle, until... By reducing the light intensity to the lowest reasonable range, the light is projected along the tangential direction of the buccal mucosa and the tooth surface, which can reduce the specular reflection of the mucosa and tooth surface, clearly reveal the fine morphology of the tooth surface pits and grooves and the gingival margin, and avoid the problem of reflective blind spots that are easily generated by traditional vertical irradiation.

[0062] During the examination, the doctor moved the device to observe the buccal surface of each tooth one by one, while the ambient light sensor 203 in the sensing component collected real-time ambient light data for different areas of the oral cavity. The controller dynamically adjusts the output brightness of the light-emitting element based on the ambient light compensation formula. Specifically, it satisfies:

[0063] ,

[0064] in This is the reference brightness value in the corresponding inspection mode. The preset standard reference ambient illuminance, The brightness compensation coefficient is used; when the ambient illuminance in well-lit areas such as the corners of the mouth is higher than the reference value, the controller 101 proportionally reduces the output brightness; when the ambient illuminance in dark areas such as the deep parts of the molars is lower than the reference value, the controller 101 proportionally increases the output brightness, so that the relative contrast of the observation area is always maintained within an appropriate range. This avoids visual fatigue for doctors caused by excessive brightness and also prevents the missed diagnosis of hidden caries caused by insufficient brightness. The camera 204 of the sensing component synchronously acquires and fuses images and tracks the tip position of the examination probe, outputting the real-time coordinates of the probe tip. The controller 101 calculates the current parameters of the corresponding excitation coil 209 through the deflection angle-current mapping formula, drives the flexible substrate 205 to produce a small deformation in the corresponding direction, and causes the light-emitting element 206 to deflect slightly to follow the movement of the probe, so that the light spot always covers the area around the probe tip, making it easy for doctors to clearly observe the state of the tooth tissue at the probe probe site.

[0065] After the examination, the doctor removes the device from the oral cavity. Once the controller 101 detects no oral tissue features in the image, it automatically de-energizes each excitation coil 209. The flexible substrate 205 automatically returns to its initial flat state due to its own elasticity, and the light-emitting element 206 returns to its vertical illumination angle. The device then enters a low-power standby state. This embodiment effectively solves the problems of tooth surface reflection and unclear observation of deep gingiva in superficial oral examinations caused by traditional fixed-angle light sources through light adjustment of the grazing angle and dynamic brightness compensation, thus improving the clarity and efficiency of routine oral screening in children.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0067] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pediatric examination probe, comprising a handle body (1) and an illumination head (2) fixedly connected to the front end of the handle body (1), characterized in that, The lighting head (2) includes: The outer casing (201) has a transparent sealing lens (202) fixedly connected to its front end. The flexible substrate (205) is made of elastic material. The outer periphery of the flexible substrate (205) is fixedly connected to the inner wall of the surgical procedure and the flexible substrate (205) is in a suspended and tensioned state. Several light-emitting elements (206) are fixedly connected to the side of the flexible substrate (205) away from the handle body (1). On the other side of the flexible substrate (205), magnetic bodies (207) are fixedly connected at positions corresponding to the light-emitting elements (206). The excitation drive plate (208) is fixedly connected to the inner wall of the outer shell (201). The excitation drive plate (208) is provided with several groups of excitation coils (209). Each group of excitation coils (209) corresponds to a magnetic body (207). The groups of excitation coils (209) are used to generate a magnetic field when energized, driving the flexible substrate (205) to produce local elastic deformation. The controller (101) is fixedly connected to the inner wall of the handle body (1) and is connected to the light-emitting element (206) and the excitation coil (209) for signal connection. The controller (101) is used to output the dimming current and the excitation current.

2. The pediatric examination probe according to claim 1, characterized in that, The flexible substrate (205) is a polymer film, and the magnetic body (207) is a radially magnetized magnetic base.

3. The pediatric examination probe according to claim 1, characterized in that, The excitation coil (209) group includes at least four excitation coils (209), and the excitation coils (209) in the same excitation coil (209) group are arranged in an orthogonal cross shape. The excitation coils (209) are used to apply magnetic forces in at least two orthogonal directions to the corresponding magnetic body (207).

4. The pediatric examination probe according to claim 1, characterized in that, The front end of the handle body (1) is threaded to the rear end of the housing (201) of the lighting head (2), and the joint is wrapped with an annular seal; the rear end of the lighting head (2) is provided with a sealed waterproof connector, and the electrical leads of the light-emitting element (206) and the excitation coil (209) are connected to the controller (101) inside the handle body (1) through the sealed waterproof connector.

5. The pediatric examination probe according to claim 1, characterized in that, The handle body (1) is also equipped with an excitation drive module (102) and a dimming module (103). The excitation drive module (102) is used to provide drive current to the excitation coil (209) according to the control signal of the controller (101); A dimming module (103) is used to drive the light-emitting element (206) in a constant current manner at a frequency higher than that perceived by the human eye.

6. The pediatric examination probe according to claim 1, characterized in that, The illumination head (2) is also equipped with a sensing component, which includes a camera (204), an infrared fill light (210), and an ambient light sensor (203). The lens of the camera (204) faces the transparent sealed lens (202), and the infrared fill light (210) is used to emit invisible infrared light.

7. A pediatric examination detection system as described in any one of claims 1-6, characterized in that, Includes a control unit that is signal-connected to the searchlight device, the control unit being configured as follows: Acquire the image captured by the camera (204); Identify the target or observation area based on the image; Based on the identification results, the current output to the excitation coil (209) is controlled to adjust the deflection angle of the corresponding light-emitting element (206); and / or, the light-emitting brightness of each light-emitting element (206) is adjusted.

8. The pediatric examination probe system according to claim 7, characterized in that, The control unit is also configured to: according to the preset inspection part mode, call the pre-stored current parameter matrix, drive multiple light-emitting elements (206) to deflect in coordination to an angle combination that matches the inspection part, so as to form a preset illumination spot.

9. The pediatric examination probe system according to claim 7, characterized in that, The control unit is also configured to: identify the pupil region from the image in real time and predict the beam path of each light-emitting element (206); When it is determined that the light beam of a certain light-emitting element (206) is about to enter the pupil area, the current of its corresponding excitation coil (209) is immediately adjusted to make the light-emitting element (206) deflect quickly to avoid the pupil, and its light brightness is reduced simultaneously; Once it is determined that the beam has moved out of the pupil area, the light-emitting element (206) is controlled to gradually return to its original deflection angle and brightness.

10. The pediatric examination probe system according to claim 7, characterized in that, The control unit is also configured to: dynamically adjust the output brightness of the light-emitting element (206) based on the ambient brightness detected by the ambient light sensor (203); and / or to perform flicker-free dimming control on the light-emitting element (206).

Images