Simulation teaching device for nerve block puncture under ultrasonic guidance

Abstract

The utility model relates to the field of medical instruments, in particular to an ultrasound-guided nerve block puncture simulation teaching device. The device is composed of a nerve block puncture mechanism, a shell, an ultrasonic detection part and a feedback device. One side of the shell is an operation area for placing an ultrasonic detection part made of silica gel and scales, and the other side of the shell is a feedback area provided with a switch and a power supply. The puncture needle, the connecting tube and the injector form a puncture mechanism, the feedback device comprises a first guide wire, a second guide wire and an acousto-optic feedback part, the two guide wires conduct electricity through the puncture needle, and the T-shaped protective sleeve protects the joint. The device overcomes the problems that an operator is difficult to really understand the operation process and skills, the operation opportunity is limited, the clinical practice operation risk is high and the like in the traditional nerve block puncture teaching, enables the operator to carry out a large amount of practice exercises in a safe environment, and improves the operation skills.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a nerve block puncture simulation teaching device under ultrasound guidance. Background Art

[0002] Nerve block puncture is an important clinical technique that is widely used in pain management, surgical anesthesia and other fields. The main purpose of nerve block puncture is to inject local anesthetics around the nerves to block nerve conduction, thereby achieving pain relief or anesthesia in a specific area. For example, in limb surgery, brachial plexus block or sciatic nerve block can reduce the use of general anesthesia and reduce surgical risks and complications. However, due to the difficulty and risk of this operation, it requires a high level of technical skills from the doctor. Traditional nerve block puncture teaching mainly relies on theoretical lectures and clinical internships, but this method has some limitations.

[0003] In theoretical lectures, practitioners often struggle to truly understand the procedures and techniques for nerve block puncture. During clinical practice, due to patient safety and ethical concerns, practitioners have limited opportunities to practice, making it difficult to gain sufficient practical experience. Furthermore, clinical practice carries certain risks, and improper operation could potentially harm patients. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem that the teaching aids cannot provide timely feedback during the simulation teaching of nerve block puncture.

[0005] To achieve the above-mentioned purpose, the technical idea adopted by the present invention to solve its technical problems is as follows: a teaching aid specially designed for ultrasound-guided nerve block puncture simulation teaching is designed, comprising a piece of silicone, a feedback circuit, a puncture needle and a container. A connecting tube is provided on the puncture needle, a syringe is provided at the other end of the connecting tube, a rubber ring with a wire is sleeved on the puncture needle, the wire is electrically connected to the puncture needle and the feedback circuit, a scale is provided on the side of the silicone block, another wire connected to the feedback circuit can be inserted into the silicone block to different depths according to the scale, and the feedback circuit also includes an acousto-optic device; during operation, the operator uses the ultrasonic device to detect the wire in the silicone block, and once detected, uses the puncture needle to perform puncture under the guidance of the ultrasonic device. When the puncture needle touches the wire in the silicone block, the entire feedback circuit is closed, flashing and sounding a reminder, and then the syringe is pushed to inject liquid to complete the experiment.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is:

[0007] Design a simulation teaching device for nerve block puncture under ultrasound guidance. The specific plan is as follows:

[0008] A nerve block puncture simulation teaching device under ultrasound guidance includes a nerve block puncture mechanism, a shell and an ultrasonic detection part. It is characterized in that the ultrasonic detection part is provided on one side of the shell and the feedback device is provided on the other side; the nerve block puncture mechanism is electrically connected to the feedback device.

[0009] Furthermore, the nerve block puncture mechanism includes a puncture needle, a connecting tube arranged at the top end of the puncture needle, and a syringe connected to the other end of the connecting tube.

[0010] Furthermore, the feedback device includes a first guide wire arranged in the ultrasonic detection part, a second guide wire electrically connected to the puncture needle, and an acousto-optic feedback part.

[0011] Furthermore, the current on the first guide wire is conducted to the second guide wire through the puncture needle.

[0012] Furthermore, a T-shaped protective sleeve is provided at the connection between the puncture needle and the first guide wire.

[0013] Furthermore, a scale is provided on the side of the ultrasonic detection part.

[0014] The beneficial effects of the utility model are:

[0015] The nerve block puncture needle is connected to the syringe via a connecting tube, making operation easy and consistent with actual clinical usage. Simulated procedures allow for greater familiarity with the use of real instruments. Furthermore, the ultrasound detector and feedback device are strategically located on opposite sides of the housing, facilitating simultaneous observation of ultrasound images and feedback signals during operation, improving teaching efficiency.

[0016] 2. The first guidewire in the feedback device is located within the ultrasonic detection unit, and works in conjunction with the second guidewire, which is electrically connected to the puncture needle, and the acousto-optic feedback unit. Structurally, this design ensures that when the puncture needle accurately contacts the first guidewire, current is rapidly transmitted through the needle to the second guidewire, triggering the acousto-optic feedback unit. A T-shaped protective sleeve, located at the junction of the puncture needle and the first guidewire, not only provides protection but also further ensures the stability and accuracy of current conduction. This precise feedback structure design allows the operator to clearly understand the results of their operation, promptly correct errors, and improve operational skills.

[0017] 3. The scale on the side of the ultrasound detector provides an important reference for the operator to simulate real clinical scenarios. The operator can adjust the insertion depth of the first guidewire according to the scale to simulate the changes in nerve position in different conditions. This structural design allows the teaching device to more realistically simulate actual clinical conditions, helping operators practice in different scenarios and improving their ability to deal with various complex situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the front view structure of the utility model;

[0019] Figure 2 Schematic diagram of the assembly structure of the housing and feedback device;

[0020] Figure 3 for Figure 2 Enlarged view of part A;

[0021] Figure 4 This is a schematic diagram of the decomposition structure of the utility model;

[0022] Figure 5 Schematic diagram of the nerve block puncture mechanism.

[0023] The above drawings include the following reference numerals:

[0024] 10. Nerve block puncture mechanism; 11. Puncture needle; 12. Connecting tube; 13. Syringe; 20. Housing; 21. Operating area; 22. Feedback area; 30. Ultrasonic detection unit; 31. Scale; 40. Feedback device; 41. First guide wire; 42. Second guide wire; 43. Sound and light feedback unit; 50. T-shaped protective sleeve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] refer to Figure 1-5 A nerve block puncture simulation teaching device under ultrasound guidance is mainly composed of a nerve block puncture mechanism 10, a shell 20, an ultrasonic detection part 30 and a feedback device 40.

[0028] During specific implementation, the shell 20 is made of plastic material, which is insulated and easy to clean. One side of the shell 20 is the operating area 21, which is a box-shaped area with a length of 20 cm, a width of 10 cm, and a height of 3 cm. The ultrasonic detection part 30 is placed in the operating area 21. The ultrasonic detection part 30 is a silicone block with a soft texture and a certain elasticity, which can better simulate the touch of human tissue. The color of the silicone block is usually translucent and has good acoustic permeability. When performing ultrasonic detection, the ultrasonic wave can penetrate the silicone block relatively smoothly, so that the internal structure can be clearly presented in the ultrasonic image. A scale 31 is provided on the side of the ultrasonic detection part 30 to facilitate the user to adjust the depth of the first guide wire 41 to simulate different clinical situations.

[0029] On the other side of the housing 20, a feedback area 22 houses a feedback device 40. Perforations are provided in the feedback area 22 to ensure effective sound transmission. A switch is also provided to conveniently control the on / off function of the feedback device 40. The feedback device 40 includes a power supply, which can be powered by two AA batteries, providing stable power for the entire device. A switch is also provided within the circuit to conveniently control the on / off function of the circuit.

[0030] During specific implementation, the nerve block puncture mechanism 10 adopts the equipment commonly used in hospitals for nerve block puncture. The puncture needle 11 is a hollow, slender cylinder made of stainless steel with good rigidity and corrosion resistance. The needle tip is designed with a bevel, which makes the puncture smoother and facilitates accurate insertion into the target position. The top of the puncture needle 11 is connected to one end of the connecting tube 12, and a Luer lock connection method is usually adopted to ensure that the connection is firm and leak-proof. The connecting tube 12 is made of soft rubber material, has certain elasticity and flexibility, and can adapt to different angles and forces during operation. The other end of the connecting tube 12 is connected to the nipple of the syringe 13, and a Luer lock connection method is also adopted to ensure that the connection between the syringe 13 and the puncture needle 11 is stable and reliable.

[0031] During specific implementation, the feedback device 40 is a small circuit breaker with a continuous power-on function similar to the existing technology with the existing publication number CN206650050U, which controls the electronic components by turning the power on and off. The feedback circuit includes a first guide wire 41 inserted horizontally from the side of the ultrasonic detection part 30. The first guide wire 41 is a slender metal wire with good conductivity and hardness. Its length is 12 cm and its diameter is 2-5 mm to simulate the blood vessel that needs to be punctured. The second guide wire 42 is similar to the first guide wire 41, has good conductivity, is 15 cm long and has a diameter of 0.5 mm. One end of the second guide wire 42 is connected to the sound and light feedback part 43, and the other end is wrapped around the puncture needle 11. A T-shaped protective sleeve 50 is provided at the connection. The T-shaped protective sleeve 50 is made of rubber material with a soft texture and good elasticity. The long end of the T-shaped protective sleeve 50 completely wraps the exposed part of the second guide wire 42, playing a good insulating and protective role. The short end is placed over the puncture needle 11, enveloping the portion of the second guidewire 42 wrapped around the puncture needle 11. This effectively protects the connection between the puncture needle 11 and the second guidewire 42, preventing short circuits or damage caused by accidental contact. The sound and light feedback unit 43 consists of a light-emitting diode (LED), a resistor, and a buzzer. The LED is a common 5mm red LED, which offers high brightness and good stability. The buzzer is a small passive buzzer with an operating voltage of 3V, capable of producing a clear and loud sound. The resistor is a 100-ohm resistor, which provides current limiting protection for the LED and buzzer. During connection, the first guidewire 41 is connected to a resistor via a wire, the other end of which is connected to the positive terminal of the LED. The negative terminal of the LED is connected to one end of the buzzer, the other end of which is connected to the second guidewire 42. When the puncture needle 11 touches the first guidewire 41, the circuit forms a closed loop. The current is limited by the resistor, causing the LED to illuminate and triggering the buzzer to emit a sound.

[0032] During the specific operation, first, adjust the position of the scale 31 of the first guide wire 41 on the side of the ultrasonic detection part 30 according to the teaching needs to simulate different clinical situations. Then use the ultrasonic equipment to detect the ultrasonic detection part 30, observe the internal structure, and determine the position of the first guide wire 41. Next, turn on the switch of the feedback device 40, and the student holds the puncture needle 11 of the nerve block puncture mechanism 10, and under the guidance of ultrasound, slowly inserts the puncture needle 11 into the ultrasonic detection part 30. When the puncture needle 11 accurately touches the first guide wire 41, the sound and light feedback part 43 emits a flash and sound reminder. At this time, the student can push the syringe 13 to practice injection.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A nerve block puncture simulation teaching device under ultrasound guidance, comprising a nerve block puncture mechanism (10), a housing (20) and an ultrasound detection unit (30), characterized in that: The ultrasonic detection unit (30) is provided on one side of the housing (20), and a feedback device (40) is provided on the other side; the nerve block puncture mechanism (10) is connected to the feedback device (40).

2. The ultrasound-guided nerve block puncture simulation teaching device according to claim 1, characterized in that: The nerve block puncture mechanism (10) comprises a puncture needle (11), a connecting tube (12) arranged at the top end of the puncture needle (11), and a syringe (13) connected to the other end of the connecting tube (12).

3. The ultrasound-guided nerve block puncture simulation teaching device according to claim 2, characterized in that: The feedback device (40) includes a first guide wire (41) disposed in the ultrasonic detection unit (30), a second guide wire (42) electrically connected to the puncture needle (11), and an acousto-optic feedback unit (43).

4. The ultrasound-guided nerve block puncture simulation teaching device according to claim 3, characterized in that: The current on the first guide wire (41) is conducted to the second guide wire (42) through the puncture needle (11).

5. The ultrasound-guided nerve block puncture simulation teaching device according to claim 3, characterized in that: A T-shaped protective sleeve (50) is provided at the connection between the puncture needle (11) and the first guide wire (41).

6. The ultrasound-guided nerve block puncture simulation teaching device according to claim 1, characterized in that: A scale (31) is provided on the side of the ultrasonic detection part (30).

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