Nasal cavity resistance adjusting mechanism of intestinal tract simulation model

Abstract

The utility model discloses a nasal cavity resistance adjusting mechanism of an intestinal tract simulation model, which comprises a nasal cavity channel model composed of a nasal cavity support and a hollow nasal cavity tube, the middle section of the nasal cavity tube is provided with a resistance pressing block, and the resistance pressing block is rotatably connected with the nasal cavity tube. A resistance adjusting mechanism for driving one end of the resistance pressing block to rotate towards the upper wall of the nasal cavity pipe is arranged on the nasal cavity support. Compared with the prior art, the rotatable resistance pressing block is designed in the nasal cavity, and the size of a channel in the nasal cavity tube is adjusted through the resistance pressing block and the resistance adjusting mechanism, so that the intubation conditions of patients under different resistances are simulated, and the simulation teaching model can more finely simulate the real conditions of the nasal cavities of different patients; a resistance adjusting mechanism is designed, and accurate control over resistance in the nasal cavity is achieved through rotation control over a resistance pressing block.

Description

Technical Field

[0001] This utility model relates to the field of simulation teaching models, and in particular to a nasal resistance adjustment mechanism for an intestinal simulation model. Background Technology

[0002] Enteral nutrition teaching models are simulation tools used for teaching and training purposes, designed to help medical students, nurses, or other related professionals learn the principles, operational techniques, and clinical applications of enteral nutrition support. These models typically simulate the structure and function of the human intestine and can be used to demonstrate the process of inserting enteral nutrition catheters, the correct use of enteral nutrition products, and the monitoring and management of enteral nutrition complications. However, current teaching models and methods still have many shortcomings and urgently need improvement.

[0003] Different patients have different nasal conditions, some may have no nasal abnormalities, others may have a deviated nasal septum, and still others may have redness and swelling. Currently available nasal models lack sufficient detail and cannot realistically reproduce the complex structure and function of the human nasal cavity. When performing nasal intubation, existing models are merely hollow tubes, unable to be designed with resistance during intubation or simulate the actual intubation process. Because teaching models cannot simulate this, interns must conduct intubation experiments on real patients, which puts significant stress on both interns and patients and can easily lead to medical disputes. Utility Model Content

[0004] The purpose of this invention is to provide a nasal resistance adjustment mechanism for an intestinal simulation model that solves the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a nasal cavity resistance adjustment mechanism for an intestinal simulation model, comprising a nasal cavity channel model consisting of a nasal cavity support and a hollow nasal cavity tube, wherein a resistance pressure block is provided in the middle section of the nasal cavity tube, the resistance pressure block is rotatably connected to the nasal cavity tube, and a resistance adjustment mechanism is provided on the nasal cavity support to drive one end of the resistance pressure block to rotate toward the upper wall of the nasal cavity tube.

[0006] Preferably, the resistance adjustment mechanism consists of a servo motor, a transmission rod, and a rocker arm. The servo motor is fixed on the nasal cavity support. The servo motor is connected to the lower end of the transmission rod via a drive rod. The upper end of the transmission rod is rotatably connected to the lower middle part of the resistance block. The front end of the resistance block is rotatably connected to the nasal cavity tube.

[0007] Preferably, the lower wall of the nasal tube is provided with an opening to facilitate the rotation of the resistance block.

[0008] Preferably, the opening is provided with a rotating support, and the front end of the resistance block is rotatably connected to the nasal tube through the rotating support.

[0009] Preferably, the lower part of the nasal tube is provided with a retaining strip, and the nasal support is provided with a retaining groove that matches the retaining strip. The nasal tube is fixed to the nasal support by the retaining strip.

[0010] Preferably, the end of the nasal tube is provided with an annular retaining plate.

[0011] Preferably, the front end of the nasal tube is provided with a sensor circuit board, which integrates a Hall sensor, a pressure sensor, a photosensitive sensor and a status indicator light. The sensor circuit board is electrically connected to the main control circuit board of the intestinal simulation model.

[0012] Preferably, the sidewall of the nasal tube is provided with a Hall sensor and a detection circuit board for detecting the depth of the nasal tube insertion. There are multiple Hall sensors, all of which are integrated on the detection circuit board and are evenly spaced along the length of the nasal tube. The detection circuit board is electrically connected to the main control circuit board of the intestinal simulation model.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] (1) This utility model designs a rotatable resistance block in the nasal cavity. The user can adjust the rotation angle of the servo motor and squeeze the gastric tube in the nasal cavity through the linkage mechanism. This results in different resistances after the gastric tube enters the nasal cavity, or even completely seals off the nasal cavity. This simulates the intubation situation of patients under different resistances, so that the simulation teaching model can more accurately simulate the real nasal cavity situation of different patients.

[0015] (2) In order to achieve the rotation of the resistance block and achieve precise control of the resistance in the nasal cavity, a resistance adjustment mechanism was designed. The servo motor realizes the lifting and retraction of the end of the resistance block through the transmission mechanism, thereby realizing the resistance design in the nasal cavity and can adjust and control different resistances according to the rotation angle of the resistance block.

[0016] (3) The nasal cavity channel model has a simple structure and is easy to install and use. The design of the end plate of the nasal cavity tube can be well connected and fixed with the silicone oral cavity model, realizing the connection between the two models.

[0017] (4) A sensor circuit board is provided at the front of the nasal tube. The sensor circuit board integrates a Hall sensor, a photosensitive sensor and a status indicator light to provide sensor electrical signals to the sensor simulation model.

[0018] (5) The insertion depth of the gastric tube in the nasal cavity can be accurately checked by the Hall sensor and detection circuit board designed on the side of the nasal tube. Attached Figure Description

[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the assembly of the present invention on a dental model.

[0022] In the diagram: 1. Nasal cavity support; 2. Nasal cavity tube; 3. Servo motor; 4. Transmission rod; 5. Rocker arm; 6. Resistance block; 7. Rotating support; 8. Locking bar; 9. Sensor circuit board; 10. Hall sensor; 11. Photosensitive sensor; 12. Status indicator light; 13. Press sensor; 14. Detection circuit board; 15. Opening; 16. Oral cavity model. Detailed Implementation

[0023] The present invention will be further described below, specifically as follows:

[0024] A nasal resistance adjustment mechanism for an intestinal simulation model, see [link / reference]. Figures 1 to 3 The nasal cavity passage model consists of a nasal cavity support 1 and a hollow nasal tube 2. A resistance block 6 is located in the middle section of the nasal tube 2, and the resistance block 6 is rotatably connected to the nasal tube 2. The nasal cavity support 1 is equipped with a resistance adjustment mechanism that drives one end of the resistance block 6 to rotate towards the upper wall of the nasal tube 2. This invention, by designing a rotatable resistance block 6 inside the nasal cavity, allows the user to adjust the rotation angle of a servo motor 3. Through a linkage mechanism, the gastric tube inside the nasal cavity is compressed, resulting in various resistance levels after the gastric tube enters the nasal cavity, even completely sealing the nasal cavity passage. This simulates the intubation situation of patients under different resistance levels. The simulation unfolds as follows: When the upper end of resistance block 6 is flush with the lower wall of nasal tube 2, it indicates that the nasal cavity is clear and there are no abnormalities, allowing the trainee to smoothly insert the gastric tube. When the resistance adjustment mechanism drives the end of resistance block 6 to rotate upwards without completely closing it, the passage of nasal tube 2 narrows, resulting in significant resistance during gastric tube insertion. This indicates that the patient has nasal abnormalities such as a deviated nasal septum. In this case, the trainee can sense the patient's condition by feeling the resistance. If the trainee continues to insert the tube, it is an incorrect medical procedure, and the tube should be removed and inserted through the other nostril for the next intubation training. When the resistance adjustment mechanism drives the end of resistance block 6 to rotate upwards and completely closes it, it indicates that the nasal cavity is blocked and intubation is impossible. The trainee should remove the tube and check the nasal cavity. Since the simulation model can also simulate coughing during intubation, i.e., the gastric tube has passed through the nasal cavity model into the esophagus and intestines, the resistance adjustment mechanism will also drive the end of resistance block 6 to rotate upwards and intermittently clamp the gastric tube during the coughing simulation, thus simulating a coughing reaction. The design of the nasal cavity resistance adjustment mechanism enables the simulation teaching model to more accurately simulate the real nasal cavity conditions of different patients.

[0025] To achieve rotation of the resistance block 6 and precise control of intranasal resistance, a resistance adjustment mechanism was designed. This mechanism consists of a servo motor 3, a transmission rod 4, and a rocker arm 5. The servo motor 3 is fixed to the nasal cavity support 1 and is connected to the lower end of the transmission rod 4 via a drive rod. The upper end of the transmission rod 4 is rotatably connected to the lower middle part of the resistance block 6, and the front end of the resistance block 6 is rotatably connected to the nasal tube 2. During operation, the servo motor 3 receives control signals from the host computer and drives the transmission rod 4 to rotate. The transmission rod 4 then drives the rocker arm 5 to rise and fall, causing the end of the resistance block 6 to tilt and retract, thereby changing the size of the channel within the nasal tube 2 and controlling the resistance during insertion. The servo motor 3 is controlled by the host computer, and the rotation angle of the resistance block 6 can be adjusted as needed to achieve different levels of resistance.

[0026] The lower wall of the nasal tube 2 is provided with an opening to facilitate the rotation of the resistance block 6. The design of the opening facilitates the rotation control of the resistance block 6 and the resistance adjustment mechanism. A rotating support 7 is provided at the opening. The front end of the resistance block 6 is rotatably connected to the nasal tube 2 through the rotating support 7. The design of the rotating support 7 provides a rotation support point for the rotation of the resistance block 6.

[0027] The lower part of the nasal tube 2 is provided with a horizontal locking strip 8, and the nasal support 1 is provided with a locking groove that matches the locking strip 8. The nasal tube 2 is fixed to the nasal support 1 by locking the locking strip 8. The locking strip 8 and the locking groove facilitate the installation and removal of the nasal tube 2 on the nasal support 1.

[0028] The end of the nasal tube 2 is provided with an annular locking platform. The platform is designed to facilitate connection with the oral cavity model of the intestinal simulation model. The oral cavity model is made of silicone, and the nasal passage can be directly fitted onto the locking platform at the end of the nasal tube 2 to achieve communication between the two models.

[0029] The nasal tube 2 has a sensor circuit board 9 at its front end. The sensor circuit board 9 integrates a Hall sensor 10, a pressure sensor 13, a photosensitive sensor 11, and a status indicator light 12. The sensor circuit board 9 is electrically connected to the main control circuit board of the intestinal simulation model. A magnet is located at the front end of the gastric tube that accompanies the model. When the gastric tube is inserted into the nasal cavity, the Hall sensor 10 can detect whether the tube has been inserted. Pre-insertion nasal cavity inspection is a necessary preparatory procedure for the doctor. Before the intubation operation, the trainee needs to shine a flashlight on the left and right sides of the patient's nasal cavity to check the nasal cavity and press the left and right nostrils to check nasal patency. To detect whether the trainee has performed this inspection, a pressure sensor 13 and a photosensitive sensor 11 are designed at the front end of the nasal tube 2. When the trainee uses a flashlight to check the condition inside the model's nasal cavity, the photosensitive sensor 11 can detect the light, and the pressure sensor 13 can detect whether the trainee has performed a pressing operation. The detection signals are uploaded to the host computer via the main control circuit board. The status indicator light 12 can be used as an indicator. When the status indicator light 12 is lit, the front of the nasal cavity visible from the outside of the model is red, which means that the patient has nasal swelling. Trainees can identify whether the simulated patient has nasal swelling by color.

[0030] The nasal tube 2 has a Hall sensor 10 and a detection circuit board 14 on its sidewall for detecting the insertion depth of the nasal tube. Multiple Hall sensors 10 are integrated onto the detection circuit board 14 and are evenly spaced along the length of the nasal tube 2. The detection circuit board 14 is electrically connected to the main control circuit board of the intestinal simulation model. Through the Hall sensors 10 arranged on the sidewall of the nasal tube 2, in conjunction with the inserted gastric tube with a magnet at the front, the insertion depth of the gastric tube in the nasal cavity can be accurately detected, and the insertion depth signal is transmitted to the main control circuit board via the detection circuit board 14.

[0031] The above provides a detailed description of the nasal resistance adjustment mechanism for an intestinal simulation model provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A nasal resistance adjustment mechanism for an intestinal simulation model, characterized in that: The nasal cavity passage model consists of a nasal cavity support and a hollow nasal cavity tube. A resistance block is provided in the middle section of the nasal cavity tube. The resistance block is rotatably connected to the nasal cavity tube. The nasal cavity support is provided with a resistance adjustment mechanism that drives one end of the resistance block to rotate toward the upper wall of the nasal cavity tube.

2. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The resistance adjustment mechanism consists of a servo motor, a transmission rod, and a rocker arm. The servo motor is fixed on the nasal cavity support. The servo motor is connected to the lower end of the transmission rod via a drive rod. The upper end of the transmission rod is rotatably connected to the lower middle part of the resistance block. The front end of the resistance block is rotatably connected to the nasal cavity tube.

3. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The lower wall of the nasal tube is provided with an opening to facilitate the rotation of the resistance block.

4. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 3, characterized in that: The opening is provided with a rotating support, and the front end of the resistance block is rotatably connected to the nasal tube through the rotating support.

5. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The lower part of the nasal tube is provided with a horizontal locking strip, and the nasal support is provided with a locking groove that matches the locking strip. The nasal tube is fixed to the nasal support by the locking strip.

6. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The end of the nasal tube is provided with an annular retaining plate.

7. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The front end of the nasal tube is equipped with a sensor circuit board, which integrates a Hall sensor, a pressure sensor, a photosensitive sensor, and a status indicator light. The sensor circuit board is electrically connected to the main control circuit board of the intestinal simulation model.

8. The nasal resistance adjustment mechanism for an intestinal simulation model according to claim 1, characterized in that: The nasal tube is provided with a Hall sensor and a detection circuit board on its side wall to detect the depth of the nasal tube insertion. There are multiple Hall sensors, all of which are integrated on the detection circuit board and are evenly spaced along the length of the nasal tube. The detection circuit board is electrically connected to the main control circuit board of the intestinal simulation model.

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