Intravenous injection tool for nursing teaching

Abstract

The utility model discloses an intravenous injection tool for nursing teaching, and particularly relates to the technical field of teaching tools, the intravenous injection tool comprises a simulation arm, and a plurality of simulation blood vessels are arranged in the simulation arm according to a real human body structure; each simulated blood vessel comprises a supporting tube on the inner layer and a flexible sensor wrapping the outer layer of the supporting tube; the signal output end of the flexible sensor is connected to the input end of a signal conditioning circuit; the output end of the signal conditioning circuit is connected to the input end of the comparator; the output end of the comparator is connected to the control end of the alarm and the control end of the illuminating lamp. And finally, the power supply ends of the flexible sensor, the alarm and the illuminating lamp are connected to the corresponding output ends of the power supply through wires. The bottom end of the simulation arm is provided with an adjusting structure and a protruding structure.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to an intravenous injection device for nursing teaching. Background Technology

[0002] Intravenous injection teaching aids are tools specifically designed for medical and nursing education to help students master intravenous injection skills. These aids typically simulate real intravenous injection scenarios, allowing students to practice in a safe and risk-free environment.

[0003] The disadvantages of existing intravenous injection equipment used in nursing education may include:

[0004] 1. Insufficient simulation: If the tool cannot realistically simulate the feel and elasticity of human tissues and blood vessels, students may not be able to obtain a realistic operating experience.

[0005] 2. Lack of feedback mechanism: Some tools may not provide immediate feedback to students, making it difficult for them to judge whether their operation is accurate or effective.

[0006] Based on the above shortcomings, there is an urgent need for an intravenous injection device for nursing education that can be rationally designed according to teaching needs and budget. Utility Model Content

[0007] Therefore, this utility model provides an intravenous injection device for nursing teaching to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an intravenous injection device for nursing teaching, comprising a simulated arm, with multiple simulated blood vessels arranged inside the simulated arm according to the structure of a real human body; each simulated blood vessel includes an inner support tube and a flexible sensor wrapped around the outer layer of the support tube;

[0009] Connect the signal output terminal of the flexible sensor to the input terminal of the signal conditioning circuit; connect the output terminal of the signal conditioning circuit to the input terminal of the comparator; connect the output terminal of the comparator to the control terminals of the alarm and the lighting; finally, connect the power terminals of the flexible sensor, the alarm, and the lighting to the corresponding output terminals of the power supply via wires.

[0010] The bottom of the simulated arm is equipped with an adjustment structure and a protrusion structure; the adjustment structure is rotatably connected to the simulated arm to achieve multi-directional display of the teaching process; while the protrusion structure is connected to the interior of the simulated arm to allow multiple simulated blood vessels to fit or separate from the inner wall of the simulated arm, thereby adjusting the teaching difficulty.

[0011] Preferably, the simulated arm is made of either transparent resin or silicone.

[0012] Preferably, the simulated blood vessel is made of either PVC or silicone tubing.

[0013] Preferably, the simulated arm and the simulated blood vessels are separated by a filler material to position multiple simulated blood vessels inside the simulated arm.

[0014] Preferably, the adjustment structure includes a disc damping shaft, which is rotatably mounted at the bottom end of the simulated arm. A support rod is provided at the bottom end of the disc damping shaft, and a base is provided at the bottom end of the support rod.

[0015] Preferably, the alarm and power supply are located inside the support rod, and the lighting is located on the base.

[0016] Preferably, the protruding structure includes an inflation tube, one end of which is disposed at the bottom of the simulated arm via a connector and is connected to the interior of the simulated arm, and the other end of which is provided with an air bladder and an air valve.

[0017] This utility model has the following advantages:

[0018] 1. During the teaching process, when the experimenter uses a syringe to perform puncture, the pressure applied by the syringe to the simulated arm and the simulated blood vessel is sensed by a flexible sensor. This embodiment considers that if the output signal of the flexible sensor is weak or does not meet the requirements of subsequent circuits, it is amplified, filtered, or converted through a signal conditioning circuit. This embodiment uses an operational amplifier (such as LM324) to amplify the sensor's output signal. A comparator circuit is used to compare the output signal of the flexible sensor with a preset threshold; when the flexible sensor output exceeds or falls below the threshold, the comparator outputs a high-level or low-level signal. This embodiment uses the comparator chip LM393. An alarm and a light are used to issue an audible and visual alarm when the pressure exceeds the preset range, indicating that the venipuncture is correct. Compared with existing technologies, this invention can realistically simulate the touch and elasticity of human tissue and blood vessels, providing students with a near-realistic operational experience and offering immediate feedback to students, allowing them to know whether their operation is accurate or effective. Based on teaching needs and budget, this invention provides a reasonable design for intravenous injection equipment used in nursing teaching.

[0019] 2. Close the valve on the airbag and then manually squeeze the airbag to ensure that the airbag can fill the simulated arm with gas in a closed environment. In this scenario, it can simulate people with obese hands that are difficult to puncture. After the teaching is completed, open the valve on the airbag to release the gas inside the simulated arm. Compared with the existing technology, it can achieve the purpose of multiple simulated blood vessels adhering to or separating from the inner wall of the simulated arm, thereby adjusting the teaching difficulty. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the intravenous injection device for nursing teaching provided by this utility model;

[0021] Figure 2 A schematic diagram of multiple simulated blood vessel structures disposed inside a simulated arm, as provided by this utility model;

[0022] Figure 3 Provided by this utility model Figure 1 A schematic diagram of the structure viewed from below;

[0023] Figure 4 A schematic diagram of the adjustment structure provided by this utility model;

[0024] In the diagram: 1. Simulated arm; 2. Simulated blood vessel; 3. Support tube; 4. Flexible sensor; 5. Wire; 6. Lighting lamp; 7. Support rod; 8. Base; 9. Disc damping pivot; 10. Inflation tube; 11. Connector; 12. Airbag. Detailed Implementation

[0025] The following specific embodiments 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. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1-4 As shown, when selecting a puncture site, doctors consider various factors, including the visibility, palpability, filling, fixation, and elasticity of the blood vessel. Furthermore, the patient's age, condition, and infusion time are also important factors in selecting the puncture site. Therefore, this embodiment provides an intravenous injection device for nursing teaching, including a simulated arm 1. Multiple simulated blood vessels 2 are arranged inside the simulated arm 1 according to the actual human anatomy. Each simulated blood vessel 2 includes an inner support tube 3 and a flexible sensor 4 wrapped around the outer layer of the support tube 3.

[0027] Connect the signal output terminal of the flexible sensor 4 to the input terminal of the signal conditioning circuit; connect the output terminal of the signal conditioning circuit to the input terminal of the comparator; connect the output terminal of the comparator to the control terminals of the alarm and the lighting lamp 6; finally, connect the power terminals of the flexible sensor 4, the alarm, and the lighting lamp 6 to the corresponding output terminals of the power supply through wires 5.

[0028] In this invention, the flexible sensor 4 is used to detect pressure changes. Its output can be an analog signal (such as voltage or current) or a digital signal. During teaching, when the experimenter uses a syringe to perform puncture, the pressure applied by the syringe to the simulated arm 1 and the simulated blood vessel 2 is sensed by the flexible sensor 4. This embodiment considers that if the output signal of the flexible sensor 4 is weak or does not meet the requirements of subsequent circuits, it is amplified, filtered, or converted by a signal conditioning circuit. This embodiment uses an operational amplifier (such as LM324) to amplify the sensor's output signal. A comparator circuit is used to compare the output signal of the flexible sensor 4 with a preset threshold. When the output of the flexible sensor 4 exceeds or falls below the threshold, the comparator outputs a high-level or low-level signal. This embodiment uses a comparator chip LM393. An alarm and a light 6 are used to issue an audible and visual alarm when the pressure exceeds the preset range, indicating that the puncture was correct. The alarm can be an active buzzer or a passive buzzer, and the light 6 can be an LED light. These components can be directly controlled by the comparator's output signal or controlled by intermediate components such as relays. The power supply provides a stable operating voltage for this invention. Appropriate power supply voltage and current specifications are selected according to the requirements of this invention. Furthermore, to ensure that this invention can be used multiple times, the contact end of the syringe is specially treated to prevent damage to the simulated arm 1.

[0029] Furthermore, the bottom of the simulated arm 1 is provided with an adjustment structure and a highlighting structure; wherein the adjustment structure is rotatably connected to the simulated arm 1 to achieve multi-directional display of the teaching process; and the highlighting structure is connected to the interior of the simulated arm 1 to achieve the purpose of adjusting the teaching difficulty by having multiple simulated blood vessels 2 adhere to or separate from the inner wall of the simulated arm 1.

[0030] As a preferred technical solution of this application, the simulated arm 1 is made of either transparent resin or silicone. Silicone, due to its good biocompatibility and simulation properties, is often used to make the skin part of the simulated arm. This material can simulate the touch and elasticity of real skin, giving students a more realistic experience when practicing intravenous injection. The same applies to transparent resin.

[0031] As a preferred technical solution of this application, the simulated blood vessel 2 is made of either PVC or silicone tubing. These materials can be used to fabricate simulated blood vessels to mimic the structure and elasticity of real blood vessels. PVC tubing is widely used due to its low cost and ease of processing, while silicone tubing is favored due to its better biocompatibility and simulation properties.

[0032] As a preferred technical solution of this application, the simulated arm 1 and the simulated blood vessels 2 are filled with a filling material to position multiple simulated blood vessels 2 inside the simulated arm 1, which facilitates multiple experiments in the later stage and ensures that the experimental personnel have a better practical operation effect.

[0033] Specifically, the adjustment structure includes a disc damping shaft 9, which is rotatably mounted at the bottom of the simulated arm 1. A support rod 7 is provided at the bottom of the disc damping shaft 9, and a base 8 is provided at the bottom of the support rod 7. Rotating the simulated arm 1 allows it to rotate 360 ​​degrees around the support rod 7.

[0034] As a preferred technical solution of this application, the alarm and power supply are installed inside the support rod 7, and the lighting lamp 6 is installed on the base 8. Installing the lighting lamp 6 on the base 8 ensures that the experimental personnel have a good field of vision.

[0035] Specifically, the protruding structure includes an inflation tube 10, one end of which is disposed at the bottom of the simulated arm 1 via a connector 11 and is connected to the interior of the simulated arm 1. The other end of the inflation tube 10 is provided with an airbag 12 and an air valve is provided on the airbag 12.

[0036] Close the valve on the airbag 12, and then manually squeeze the airbag 12 to ensure that the airbag 12 can fill the simulated arm 1 with gas in a closed environment. In this scenario, it can simulate people with obese hands that are difficult to puncture. After the teaching is completed, open the valve on the airbag 12 to release the gas inside the simulated arm 1.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An intravenous injection device for nursing teaching, characterized in that: It includes a simulated arm (1), and multiple simulated blood vessels (2) are set inside the simulated arm (1) according to the structure of a real human body; each simulated blood vessel (2) includes an inner support tube (3) and a flexible sensor (4) wrapped around the outer layer of the support tube (3); Connect the signal output terminal of the flexible sensor (4) to the input terminal of the signal conditioning circuit; connect the output terminal of the signal conditioning circuit to the input terminal of the comparator; connect the output terminal of the comparator to the control terminal of the alarm and the lighting lamp (6); finally, connect the power terminals of the flexible sensor (4), the alarm and the lighting lamp (6) to the corresponding output terminals of the power supply through wires (5); The bottom of the simulated arm (1) is provided with an adjustment structure and a highlighting structure; the adjustment structure is rotatably connected to the simulated arm (1) to achieve multi-directional display of the teaching process; while the highlighting structure is connected to the interior of the simulated arm (1) to achieve the purpose of adjusting the teaching difficulty by having multiple simulated blood vessels (2) adhere to or separate from the inner wall of the simulated arm (1).

2. The intravenous injection device for nursing teaching according to claim 1, characterized in that: The simulated arm (1) is made of either transparent resin or silicone.

3. The intravenous injection device for nursing teaching according to claim 1, characterized in that: The simulated blood vessel (2) is made of either PVC or silicone tubing.

4. The intravenous injection device for nursing teaching according to claim 1, characterized in that: The simulated arm (1) and the simulated blood vessels (2) are separated by a filler material so that multiple simulated blood vessels (2) can be positioned inside the simulated arm (1).

5. The intravenous injection device for nursing teaching according to claim 1, characterized in that: The adjustment structure includes a disc damping shaft (9), which is rotatably mounted at the bottom end of the simulated arm (1). A support rod (7) is provided at the bottom end of the disc damping shaft (9), and a base (8) is provided at the bottom end of the support rod (7).

6. The intravenous injection device for nursing teaching according to claim 5, characterized in that: The alarm and power supply are located inside the support rod (7), and the lighting lamp (6) is located on the base (8).

7. The intravenous injection device for nursing teaching according to claim 1, characterized in that: The protruding structure includes an inflation tube (10), one end of which is connected to the bottom of the simulated arm (1) via a connector (11) and the inflation tube (10) is connected to the interior of the simulated arm (1). The other end of the inflation tube (10) is provided with an airbag (12) and an air valve is provided on the airbag (12).

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