A visual and audiovisual poster for insulin safety injection
By integrating pressure-sensitive tactile switches and audio players into insulin injection training equipment, the problem of high teacher labor costs was solved, and the combination of teachers and audio teaching was realized, which improved teaching effectiveness and self-learning efficiency, and enhanced medical students' perceptual cognition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI EIGHTH PEOPLES HOSPITAL
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-03
AI Technical Summary
Existing insulin injection training equipment suffers from high teacher labor costs and is inconvenient for medical students to learn independently.
Design an audiovisual poster for insulin safety injection. By combining a pressure-sensitive touch switch with an audio player on the main body of the poster, automatic voice broadcasting can be achieved. Teachers can trigger audio playback by pressing the injection demonstration site, and students can review and reinforce their learning on their own.
This approach combines teacher instruction with audio teaching, improving teaching effectiveness, facilitating self-study and review for medical students, enhancing their intuitive understanding of injection sites, and extending the lifespan of the equipment.
Smart Images

Figure CN224457502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hospital teaching aids technology, and in particular to an audiovisual poster on insulin safety injection. Background Technology
[0002] Safe insulin injection is a crucial clinical skill. Currently, medical schools typically employ two methods for insulin injection training: visual explanations or live demonstrations. In practice, visual explanations can be tedious, while live demonstrations require additional manpower. Furthermore, both methods necessitate the presence of instructors, hindering independent learning and practice for medical students. Therefore, developing a novel insulin injection training device to overcome these limitations is a necessary research direction for those skilled in the art. Utility Model Content
[0003] The purpose of this invention is to provide an audiovisual chart for insulin safety injection, which can automatically broadcast the corresponding needle insertion position during the teaching process, thereby freeing up teachers' human resources and helping medical students learn and explore on their own.
[0004] This utility model discloses an audiovisual poster for insulin safety injection, which includes:
[0005] The wall chart body has several pressure-sensitive tactile switches distributed on it; the surface of the wall chart body is also drawn with a human body image, which includes several injection demonstration sites, and the positions of the several injection demonstration sites correspond one-to-one with the positions of the several pressure-sensitive tactile switches.
[0006] An audio player integrates a power amplifier, a battery, a power switch, and an audio playback module. The audio playback module integrates several audio playback circuits. The power amplifier is electrically connected to each of the audio playback circuits and is used to play the audio output by each circuit when it is active. The battery supplies power to the audio playback module via a power supply circuit. The power switch is mounted on the power supply circuit and is used to control the circuit's on / off state. Several pressure-sensitive tactile switches are electrically connected to each of the audio playback circuits and are used to control the circuit's on / off state.
[0007] This technical solution allows instructors to use pointers or other teaching aids to press on injection demonstration sites on an image of the human body during insulin injection instruction. When a pointer or other aid is pressed on a specific injection demonstration site, a pressure-sensitive tactile switch overlapping that site triggers the connected audio playback circuit, activating it and playing pre-stored audio through a power amplifier. This combines on-site teaching with audio playback. After the lesson, students can also press on the injection demonstration sites on the human body image to receive corresponding audio prompts, reviewing and reinforcing their learning. This ensures efficient self-study and exploration for medical students.
[0008] Preferably, in the above-mentioned audiovisual poster for insulin safety injection, the main body of the poster includes a PVC film layer and a silicone layer, with the silicone layer covering one side of the PVC film layer; the human body image is drawn on the side of the silicone layer facing away from the PVC film layer; and the plurality of pressure-sensitive tactile switches are installed between the PVC film layer and the silicone layer.
[0009] By employing this technical solution—using a silicone layer on the surface of the wall chart to simulate human skin—the wall chart can be used for injection practice by medical students. Placing the pressure-sensitive tactile switch between the PVC film layer and the silicone layer avoids exposing the switch to the outside, improving medical students' intuitive understanding of injection sites. It also provides some protection for the electrical connection between the pressure-sensitive tactile switch and the audio player, thereby extending the device's lifespan.
[0010] Preferably, in the above-mentioned audiovisual posters for insulin safety injection, the silicone layer is a detachable component.
[0011] By adopting this technical solution, the silicone layer can be replaced, thereby extending the service life of the equipment.
[0012] Preferably, the above-mentioned insulin safety injection video poster also includes a hanging ring, which is fixedly installed on the top of the poster body.
[0013] This technical solution involves setting up hanging rings to allow the device to be suspended during teaching.
[0014] Preferably, in the above-mentioned audio-visual poster on insulin safety injection, the audio player is fixedly installed on the top of the poster body.
[0015] Compared with the prior art, the present invention has achieved the following technical advancements:
[0016] First, this invention can combine on-site teaching by teachers with audio teaching, thereby improving the effectiveness of on-site teaching.
[0017] Secondly, this invention enables medical students to learn and explore independently outside the classroom, ensuring the effectiveness of review and reinforcement of learning.
[0018] Thirdly, this invention can prevent pressure-sensitive tactile switches from being exposed on the surface of the chart, thus improving medical students' intuitive understanding of injection sites on the human body.
[0019] Fourth, this utility model can provide certain protection for the various electronic components in the equipment.
[0020] Finally, this utility model has the technical advantages of simple structure, easy preparation and operation. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention. The pressure-sensitive tactile switch is hidden inside the main body of the wall chart.
[0022] Figure 2 This is a schematic diagram of the structure of the PVC film layer, the silicone layer, and the pressure-sensitive tactile switch. In this diagram, the silicone layer is shown with a corner of it partially uncovered relative to the PVC film layer.
[0023] Figure 3 This is a schematic diagram of the electrical connections of the power amplifier, battery, and audio playback module in Example 1.
[0024] The component names corresponding to the various reference numerals in the figure are as follows:
[0025] 100. Wall chart body; 200. Audio player; 300. Pressure-sensitive tactile switch; 400. Hanging ring; 110. PVC film layer; 120. Silicone layer; 130. Human body image; 140. Injection demonstration area; 210. Power amplifier; 220. Battery; 230. Power switch; 240. Audio playback module; 250. Outer casing. Detailed Implementation
[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.
[0027] Example 1, please refer to Figure 1-3 :
[0028] An audiovisual poster for insulin safety injection includes: a poster body 100 and an audio player 200.
[0029] The wall chart body 100 includes a PVC film layer 110 and a silicone layer 120, both extending vertically and of substantially the same size. A plurality of pressure-sensitive tactile switches 300 are distributed and installed on one side surface of the PVC film layer 110; the silicone layer 120 is detachably installed on the side of the PVC film layer 110 where the pressure-sensitive tactile switches 300 are installed.
[0030] The silicone layer 120 has a human body image 130 drawn on the side facing away from the PVC film layer 110. The human body image 130 includes several injection demonstration sites 140, and the several pressure-sensitive tactile switches 300 are configured to overlap with the positions of the several injection demonstration sites 140 in a one-to-one correspondence.
[0031] The audio player 200 includes a housing 250, with a hanging ring 400 mounted on the top of the housing 250. A battery 220 and an audio playback module 240 are integrated within the housing. A power amplifier 210 and a power switch 230 are respectively mounted on both sides of the housing 250. In practice, the housing 250 may also have a charging port for charging the battery 220, or a door for replacing or repairing the battery 220 and the audio playback module 240. The addition of a charging port and a door to the housing are conventional technologies and will not be elaborated upon here. The audio playback module can be mounted on a control panel. The audio playback module 240 integrates several audio playback circuits; the power amplifier 210 is electrically connected to each of the several audio playback circuits and is used to play the audio output by each of the several audio playback circuits when the circuit is on; the battery 220 supplies power to the audio playback module 240 through a power supply circuit; the power supply switch 230 is installed on the power supply circuit and is used to control the circuit on / off of the power supply circuit; the several pressure-sensitive tactile switches 300 are electrically connected to each of the several audio playback circuits and are used to control the circuit on / off of the several audio playback circuits. It should be noted that the pressure-sensitive tactile switches 300 described in this article are very mature existing products. They contain a metal spring and two electrodes connected to the audio playback circuits respectively. When pressure is applied to their surface, the metal spring deforms and connects to the two electrodes respectively, so that the two electrodes form a conductive connection, thereby realizing the circuit on of the corresponding audio playback circuit; when the pressure is removed from their surface, the metal spring resets, realizing the circuit off of the corresponding audio playback circuit; therefore, its specific internal structure will not be described in detail in this article.
[0032] The silicone layer 120 covers one side of the PVC film layer 110; the human image 130 is drawn on the side of the silicone layer 120 facing away from the PVC film layer 110; the plurality of pressure-sensitive tactile switches 300 are installed between the PVC film layer 110 and the silicone layer 120. The silicone layer and the PVC film layer are either fixedly connected as a single unit or detachably connected. Specifically, the silicone layer 120 can be implemented using various existing methods such as Velcro connection, stitching connection, and heat pressing connection. The aforementioned detachable connection relationships are all common knowledge and will not be elaborated upon in this document.
[0033] In practice, its working process is as follows:
[0034] During instruction on safe insulin injection, the instructor first uses a pointer or other teaching aid to press different injection demonstration sites 140 on the human body image 130. When the pointer or other teaching aid presses on a specific injection demonstration site 140, the pressure-sensitive tactile switch 300 overlapping that site triggers the audio playback circuit connected to it, activating the audio playback circuit and playing its pre-stored teaching audio through the power amplifier 210. Different audio playback circuits play different teaching audio, deepening the students' learning impression and achieving a combination of on-site teacher instruction and audio-visual teaching. After class, students can also press the injection demonstration site 140 on the human body image 130 to obtain corresponding audio prompts, thereby reviewing and reinforcing their learning. This ensures the efficiency of medical students' self-learning and exploration. Furthermore, the silicone layer effectively simulates the feel of human skin, allowing medical students to perform simulated injection operations on the silicone layer during and after class. To avoid damaging the pressure-sensitive tactile switch during simulated injection, the silicone layer can be removed during operation.
[0035] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Even if various changes are made to this utility model, if these changes fall within the scope of the claims of this utility model and their equivalents, they shall still fall within the protection scope of this utility model.
Claims
1. An audio-visual chart for safe insulin injection, characterized in that, include: The wall chart body has several pressure-sensitive tactile switches distributed on it; the surface of the wall chart body is also drawn with a human body image, which includes several injection demonstration sites, and the positions of the several injection demonstration sites correspond one-to-one with the positions of the several pressure-sensitive tactile switches. An audio player integrates a power amplifier, a battery, and an audio playback module. The audio playback module integrates several audio playback circuits. The power amplifier is electrically connected to each of the several audio playback circuits and is used to play the audio output by each of the several audio playback circuits when the circuit is on. The battery is used to power the audio playback module. Several pressure-sensitive tactile switches are electrically connected to each of the several audio playback circuits and are used to control the circuit on / off state of the several audio playback circuits.
2. The insulin safety injection visual and auditory poster according to claim 1, characterized in that, The main body of the wall chart includes a PVC film layer and a silicone layer, with the silicone layer covering one side of the PVC film layer; the human figure is drawn on the side of the silicone layer facing away from the PVC film layer; and a plurality of pressure-sensitive tactile switches are installed between the PVC film layer and the silicone layer.
3. The insulin safety injection visual and auditory poster according to claim 2, characterized in that, The silicone layer is a detachable component.
4. The insulin safety injection visual and auditory poster according to claim 3, characterized in that, Also includes: The hanging ring is fixedly installed on the top of the main body of the poster.
5. The insulin safety injection visual and auditory poster according to claim 4, characterized in that, The audio player is fixedly installed on the top of the main body of the wall chart.