High-fidelity upper limb nerve injury examination skill training model

Abstract

The present invention provides a highly realistic upper limb nerve injury examination skill training simulation model. A pain sensation examination needle is used to prick the highly realistic human upper limb model to examine the patient's pain sensation. The pain sensation in the distribution area of the damaged nerve will necessarily decrease. Through the microcomputer monitoring controller, voice prompts and different colors of indicator lights are issued to judge the damaged upper limb nerve location. This achievement is used in medical colleges and teaching hospitals to train medical students and in-service medical staff in upper limb nerve injury examination skills, which can significantly improve the teaching effect. A highly realistic upper limb nerve injury examination skill training model, which comprises: a highly realistic human upper limb model, a microcomputer monitoring controller, and a pain sensation examination needle. It is characterized in that: four highly realistic human upper limb models (1-1, 1-2, 1-3, 1-4) are each provided with a simulated skin (2), a subcutaneous tissue-muscle layer (3), and a simulated bone (4). Under the simulated skin (2), an upper layer conductive metal mesh electrode (B1 / B2 / B3 / B4) and a lower layer conductive metal mesh common electrode (A) isolated by an insulating layer (5) are arranged. The present invention can significantly improve the quality of skill training.

Description

Technical Field

[0001] The present invention relates to the technical field of medical education, and more specifically, to a high-fidelity upper limb nerve injury examination skill training model. Background Art

[0002] In clinical medicine, upper limb nerve injuries, including median nerve injury, radial nerve injury, and ulnar nerve injury, belong to neurological diseases. Doctors often use pain sensation examinations to determine the presence of upper limb nerve injuries and which nerve is injured. In medical education, the traditional teaching method is theoretical teaching supplemented by wall charts and video explanations, while skill training can only be carried out on patients in the hospital. However, there are too few typical patients. In recent years, due to the enhanced legal awareness and self-protection awareness of patients and their families, they often refuse medical students' internships. Currently, there is a blank in the world's medical education equipment for upper limb nerve injury examination and training skills training equipment. Since medical students cannot perform actual operations themselves, it is very difficult to master the upper limb nerve injury judgment and examination techniques, which seriously affects the cultivation of medical talents. Therefore, it is very necessary to develop a high-fidelity upper limb nerve injury examination skill training equipment. Summary of the Invention

[0003] The object of the present invention is to provide a high-fidelity upper limb nerve injury examination skill training simulation model. A pain sensation examination needle is used to prick the high-fidelity human upper limb model to examine the patient's pain sensation. The pain sensation in the distribution area of the damaged nerve will inevitably decrease. Through the microcomputer monitoring controller, voice prompts and different colors of indicator lights are emitted to determine the damaged upper limb nerve location. This achievement is used for medical colleges and teaching hospitals to conduct upper limb nerve injury examination skill training for medical students and in-service medical staff, which can significantly improve the teaching effect.

[0004] A high-fidelity upper limb nerve injury examination skill training model, which includes: a high-fidelity human upper limb model, a microcomputer monitoring controller, and a pain sensation examination needle. It is characterized in that: 4 high-fidelity human upper limb models (1-1, 1-2, 1-3, 1-4) are all provided with simulated skin (2), subcutaneous tissue - muscle layer (3), and simulated bones (4). Under the simulated skin (2), an upper conductive metal mesh electrode (B1 / B2 / B3 / B4) and a lower conductive metal mesh common electrode (A) isolated by an insulating layer (5) are provided. Specifically, the first model is a normal high-fidelity human upper limb model (1-1), the common electrode (A) and the upper conductive metal mesh electrode are (B-1), and they are respectively connected to wires (DX) to form a cable (DL-1), and through the cable plug (CT-1), it is connected to the socket (CZ-1) of the microcomputer monitoring controller; the second model is a high-fidelity human upper limb model (1-2) with median nerve injury. There is a 1mm insulating gap (JX) between the upper conductive metal mesh electrode (B-2) of the simulated skin (2) in the median nerve distribution area, that is, the radial side of the palm and the radial 7 / 10 of the finger palm surface, and the upper conductive metal mesh (B) in the normal nerve distribution area, that is, the radial nerve distribution area (B-3) and the ulnar nerve distribution area (B-4). The common electrode (A) and the conductive metal mesh electrode (B-2) are respectively connected to wires (DX) to form a cable (DL-2), and through the cable plug (CT-2), it is connected to the socket (CZ-2) of the microcomputer monitoring controller; the third model is a high-fidelity human upper limb model (1-3) with radial nerve injury. There is a 1mm gap between the upper conductive metal mesh electrode (B-3) area in the radial nerve distribution area and the upper conductive metal mesh electrodes (B-3) in the normal nerve distribution areas, that is, the median nerve distribution area (B-2) and the ulnar nerve distribution area. The common electrode (A) and the conductive metal mesh electrode (B-3) are respectively connected to wires (DX) to form a cable (DL-3), and through the cable plug (CT-3), it is connected to the socket (CZ-3) of the microcomputer monitoring controller; the fourth model is a high-fidelity human upper limb model (1-4) with ulnar nerve injury. There is a 1mm gap (JX) between the upper conductive metal mesh electrode (B-4) area in the ulnar nerve distribution area and the upper conductive metal mesh (B) in the normal nerve distribution areas, that is, the median nerve distribution area (B-2) and the radial nerve distribution area (B-3). The common electrode (A) and the conductive metal mesh electrode (B-4) are respectively connected to wires (DX) to form a cable (DL-4), and through the cable plug (CT-4), it is connected to the socket (CZ-4) of the microcomputer monitoring controller; the microcomputer monitoring controller is such that on the panel (8) of the chassis (7), there are a power switch (K) and a power indicator light (L), there are sockets (CZ-1, CZ-2, CZ-3, CZ-4), and corresponding two-color indicator lights (L1, L2, L3, L4) are also set; inside the chassis (7), there are a DC power supply (DC), a voice module (IC), and a speaker (Y);The pain sensation exploration needle (9) includes a needle tip (10) and a pen-shaped needle body (11).;

[0005] The advantages of the present invention are as follows: The pain sensation of the patient is examined by using the pain sensation examination needle to prick on the high-fidelity human upper limb model. According to the different voices of the pain sensation degree sent by the microcomputer monitoring controller and the different colors of the indicator lights, the damaged upper limb nerve part is judged. It can significantly improve the teaching effect of the skill training of medical students and in-service medical staff. Four high-fidelity upper limb models can be used for four people to carry out skill training operations simultaneously, greatly improving the teaching efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention will be further described below with reference to the accompanying drawings

[0007] Figure 1 It is a schematic diagram of the overall structure of the present invention

[0008] Figure 2 It is a schematic diagram of the anatomical structure of the cross-section of the human upper limb hand and the conductive cloth setting of the present invention

[0009] Figure 3 It is a schematic diagram of the structure of the normal nerve human upper limb model of the present invention

[0010] Figure 4 It is a schematic diagram of the structure of the human upper limb model with median nerve injury of the present invention

[0011] Figure 5 It is a schematic diagram of the structure of the human upper limb model with ulnar nerve injury of the present practical invention

[0012] Figure 6 It is a schematic diagram of the structure of the human upper limb model with radial nerve injury of the present invention

[0013] Figure 7 It is a schematic diagram of examining the pain sensation with the pain sensation examination needle of the present invention

[0014] Figure 8 It is a schematic diagram of the external structure of the microcomputer monitoring controller of the present invention

[0015] Figure 9 It is a schematic diagram of the internal structure of the microcomputer monitoring controller of the present invention

[0016] Figure 10 It is the schematic circuit diagram of the microcomputer monitoring control of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The skin of the highly simulated human arm model of the present invention is formed by a vinyl or silicone rubber mold, the subcutaneous tissue and muscle are made of PU foam, the skeleton is made of resin or plastic, and other parts are available on the market. After preparing various parts, they are assembled according to the instructions and the drawings. First, a simulated skin layer (2) is made in the upper limb mold, and then simulated bones (4) such as simulated finger bones, wrist bones and forearm bones are placed in the mold and PU foam is added to make a simulated subcutaneous tissue-muscle layer (3). After taking it out, a double-layer conductive metal mesh electrode () and its insulating layer (3) are arranged according to the upper limb nerve distribution area.The first model is a normal highly simulated human upper limb model (1-1). The lower layer of the double-layer conductive metal mesh is the common electrode (A), and the upper layer of the double-layer conductive fabric is the conductive metal mesh electrode (B-1). Connect the wires (DX) respectively to form a cable (DL-1), and connect the socket (CZ-1) of the microcomputer monitoring controller through the cable plug (CT-1). The second model is a highly simulated human upper limb model with median nerve injury (1-2). There is a 1mm gap (JX) between the upper conductive metal mesh electrode (B-2) in the distribution area of the median nerve and the upper conductive metal mesh (B) in the normal nerve distribution area, that is, the radial nerve distribution area (B-3) and the ulnar nerve distribution area (B-4). The common electrode (A) and the conductive metal mesh electrode (B-2) are respectively connected to the wires (DX) to form a cable (DL-2), and connect the socket (CZ-2) of the microcomputer monitoring controller through the cable plug (CT-2). The third model is a highly simulated human upper limb model with radial nerve injury (1-3). There is a 1mm gap () between the upper conductive metal mesh electrode (B-3) area in the radial nerve distribution area, that is, the dorsal radial half of the hand and the dorsal skin of the radial 2 1 / 2 fingers, and the upper conductive metal mesh (B-3) in the normal nerve distribution area, that is, the median nerve distribution area (B-2) and the ulnar nerve distribution area. The common electrode (A) and the conductive fabric electrode (B-3) are respectively connected to the wires (DX) to form a cable (DL-3), and connect the socket (CZ-3) of the microcomputer monitoring controller through the cable plug (CT-3). The fourth model is a highly simulated human upper limb model with ulnar nerve injury (1-4). There is a 1mm gap (JX) between the upper conductive metal mesh electrode (B-4) area in the ulnar nerve distribution area, that is, the ulnar 3 / 10 of the palm surface, the dorsal surface of the hand and the ulnar 1 / 2 of the dorsal surface of the fingers, and the upper conductive metal mesh (B) in the normal nerve distribution area, that is, the median nerve distribution area (B-2) and the radial nerve distribution area (B-3). The common electrode (A) and the conductive metal mesh electrode (B-4) are respectively connected to the wires (DX) to form a cable (DL-4), and connect the socket (CZ-4) of the microcomputer monitoring controller through the cable plug (CT-4). Set the power switch (K) and the power indicator light (L) on the panel (8) of the microcomputer monitoring controller chassis (7), and set the sockets (CZ-1, CZ-2, CZ-3, CZ-4), and also set the corresponding two-color indicator lights (L-1, L-2, L-3, L-4). Install a DC power supply (DC), a voice module (IC) and a speaker (Y) in the chassis (7). It can be used after debugging. When in use, place the model and the microcomputer controller on the experimental table, and connect the plugs of the 4 arm models' cables to the corresponding sockets of the microcomputer controller according to the numbers written by the teacher. Insert the power plug of the microcomputer controller into the 220V power socket, turn on the power switch, and the indicator light (L) lights up.Four operators can respectively use their hands to hold the pain sensation inspection needle body (10) and prick the skin layer (2) of the hands of four highly simulated human upper limbs and the double-layer conductive metal mesh below with the tip of the pain sensation inspection needle () to check the pain sensation. That is, a pen-type pain sensation inspection needle is used to prick the simulated hand skin. When checking, the pricking depth should be deeper than that for real patients, reaching about 3 mm. Penetrating the insulating layer (5) of the common electrode (A) of the upper conductive metal mesh to touch the electrode (B) of the lower conductive metal mesh can connect the corresponding indicator lights (L1-L4) of the microcomputer monitoring controller chassis (7) to emit alarm lights, connect the circuit of the voice module (IC), and the speaker emits corresponding voice prompts. When pricking and inspecting all parts of the hand simulated by the first highly simulated human upper limb model, the voice prompt is "Pain!" and the green light lights up at the same time, indicating that the skin sensation is completely normal. It can be judged as normal without nerve damage. When checking the second highly simulated human upper limb model, the sensory disorder is manifested as the loss of skin sensation on the radial side of the palm and the radial side of the finger palm surface for 7 / 10. When pricking and inspecting, the voice prompt is "No pain!" and the red light lights up at the same time. When pricking and inspecting the skin of other parts, the voice prompt is "Pain!" indicating that the sensation of other parts is normal. It can be judged as median nerve injury. When checking the third highly simulated human upper limb model, it is manifested as the loss of skin sensation on the radial half of the back of the hand and the back of the radial 2.5 fingers. When pricking and inspecting, the voice prompt is "No pain!" and the red light lights up at the same time. When pricking and inspecting the skin of other parts, the voice prompt is "Pain!" and the green light lights up at the same time, indicating that the sensation is normal. It can be judged as radial nerve injury. When checking the fourth highly simulated human upper limb model, it is manifested as the loss of skin sensation on the ulnar side of the palm surface for 3 / 10, the back of the hand, and the ulnar half of the back of the fingers. When pricking and inspecting, the voice prompt is "No pain!" and the red light lights up at the same time. When pricking and inspecting other parts, the voice prompt is "Pain!" and the green light lights up at the same time, indicating that the sensation is normal. It can be judged as simulated ulnar nerve injury. During the assessment, the teacher renumbers and plugs in the cable plugs. Using the present invention for upper limb nerve injury inspection skill training and assessment, due to the realistic effect, the training quality can be significantly improved.

Claims

1. A high-fidelity upper limb nerve injury examination skill training model, which comprises: High-fidelity human upper limb model, microcomputer monitoring controller, pain sensation examination needle, characterized in that: 4 high-fidelity human upper limb models (1-1, 1-2, 1-3, 1-4) are each provided with a simulated skin (2), subcutaneous tissue - muscle layer (3), and simulated bone (4). Under the simulated skin (2), an upper conductive metal mesh electrode (B1 / B2 / B3 / B4) and a lower conductive metal mesh common electrode (A) isolated by an insulating layer (5) are provided. Specifically, the first model is a normal high-fidelity human upper limb model (1-1), and the upper conductive metal mesh electrode is (B-1), which is respectively connected to the lower conductive metal mesh common electrode (A) by a wire (DX) to form a cable (DL-1), and is connected to the socket (CZ-1) of the microcomputer monitoring controller through the cable plug (CT-1); the second model is a high-fidelity human upper limb model (1-2) with median nerve injury. A 1 mm insulating gap (JX) is provided between the upper conductive metal mesh electrode (B-2) of the simulated skin (2) in the median nerve distribution area, i.e., the radial side of the palm and the radial side of the finger palm surface 7 / 10, and the upper conductive metal mesh (B) in the normal nerve distribution area, i.e., the radial nerve distribution area (B-3) and the ulnar nerve distribution area (B-4). The common electrode (A) and the conductive metal mesh electrode (B-2) are respectively connected by a wire (DX) to form a cable (DL-2), and are connected to the socket (CZ-2) of the microcomputer monitoring controller through the cable plug (CT-2); the third model is a high-fidelity human upper limb model (1-3) with radial nerve injury. A 1 mm gap is provided between the upper conductive metal mesh electrode (B-3) area in the radial nerve distribution area and the upper conductive metal mesh electrodes (B-3) in the normal nerve distribution areas, i.e., the median nerve distribution area (B-2) and the ulnar nerve distribution area. The common electrode (A) and the conductive metal mesh electrode (B-3) are respectively connected by a wire (DX) to form a cable (DL-3), and are connected to the socket (CZ-3) of the microcomputer monitoring controller through the cable plug (CT-3); the fourth model is a high-fidelity human upper limb model (1-4) with ulnar nerve injury. A 1 mm gap (JX) is provided between the upper conductive metal mesh electrode (B-4) area in the ulnar nerve distribution area and the upper conductive metal mesh (B) in the normal nerve distribution areas, i.e., the median nerve distribution area (B-2) and the radial nerve distribution area (B-3). The common electrode (A) and the conductive metal mesh electrode (B-4) are respectively connected by a wire (DX) to form a cable (DL-4), and are connected to the socket (CZ-4) of the microcomputer monitoring controller through the cable plug (CT-4).

2. The high-fidelity upper limb nerve injury examination skill training model according to claim 1, wherein: The microcomputer monitoring controller is such that on the panel (8) of the chassis (7), there are a power switch (K) and a power indicator light (L), sockets (CZ-1, CZ-2, CZ-3, CZ-4) are provided, and corresponding two-color indicator lights (L1, L2, L3, L4) are also provided; inside the chassis (7), there are a DC power supply (DC), a voice module (IC), and a speaker (Y).

3. The high-fidelity upper limb nerve injury examination skill training model according to claim 1, characterized in that: The pain sensation examination needle (9) includes a needle tip (10) and a pen-shaped needle body (11).

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