Infusion port puncture practice teaching aid
By designing an infusion port puncture training aid including substrate, simulated human skin, infusion port components and reservoirs, the problem of inability to achieve inter-nurse practice and external patient simulation training in the prior art is solved, and the effect of reducing exercise costs and improving proficiency is achieved.
Patent Information
- Application Number
- CN202421954174.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing infusion port puncture technology cannot achieve practice among nurses and simulated training outside of patients, resulting in high practice costs and low proficiency, which can easily lead to puncture failure and increase the additional cost of patients.
An infusion port puncture training aid including a substrate, a simulated human skin, a first infusion port assembly, a second infusion port assembly and a reservoir was designed to simulate the upper body of the human body and provide a reusable training environment.
Through this teaching aid, nurses can practice multiple times to improve proficiency in needle cutting methods and directions, reduce puncture failure rate, reduce exercise costs, and provide flexible simulated human skin replacement solutions to avoid waste of materials.
Smart Images
Figure CN222995014U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an infusion port puncture practice teaching aid. Background Art
[0002] Infusion port puncture and venous puncture are both applied to the patient's body skin. The difference is that venous puncture practice is more related to the patient's own blood vessel conditions. The infusion port seat is relatively fixed, the method of finding the port seat is fixed, and there is a "falling feeling" and visible blood return when the puncture is successful. As a training and practice tool for nurses, it is impossible to practice puncture among nurses, nor can it be practiced on patients. If a medical infusion port is directly used for practice, the practice cost is high. If the number of practice times is small, the proficiency of nurses in mastering the needle insertion method, needle insertion direction, and experiencing the "falling feeling" is low, which easily leads to puncture failure, and thus brings additional costs to patients.
[0003] Therefore, there is an urgent need for an infusion port puncture practice teaching aid to solve the above technical problems. Summary of the Utility Model
[0004] The utility model aims to solve the above technical problems, that is, to solve the problems that existing infusion port puncture cannot be practiced among nurses, nor can it be practiced on patients. If a medical infusion port is directly used for practice, the practice cost is high. If the number of practice times is small, the proficiency of nurses in mastering the needle insertion method, needle insertion direction, and experiencing the "falling feeling" is low, which easily leads to puncture failure, and thus brings additional costs to patients.
[0005] For this purpose, the utility model provides an infusion port puncture practice teaching aid, which includes a substrate, a simulated human skin, a first infusion port assembly, a second infusion port assembly, and a liquid storage tank. The shape of the substrate is the same as that of the upper body of a human. The first infusion port assembly is arranged in the chest area at the top of the substrate for simulating the infusion port puncture under the collarbone of a human. The second infusion port assembly is arranged in the arm area at the top of the substrate. The liquid storage tank is detachably and fixedly connected to the bottom end of the substrate. The liquid storage tank is used to provide colored liquid to the first infusion port assembly and the second infusion port assembly. Two pieces of simulated human skin symmetrically distributed with the neck center line of the substrate as the reference are detachably and fixedly connected to the top end of the substrate, and one of the simulated human skins covers the first infusion port assembly and the second infusion port assembly.
[0006] In the specific implementation manner of the above infusion port puncture practice teaching aid, sponge is filled between the top end of the substrate outside the first infusion port assembly and the second infusion port assembly and the simulated human skin, and the sponge is adhesively fixed on the substrate.
[0007] In the specific implementation manner of the above infusion port puncture practice teaching aid, the first infusion port assembly includes a first infusion port and a first catheter, the second infusion port assembly includes a second infusion port and a second catheter, the first infusion port, the first catheter, the second infusion port, and the second catheter are all bonded to the top end of the substrate, the liquid storage tank is communicated with the inside of the corresponding first infusion port and the inside of the second infusion port respectively through the first catheter and the second catheter, flow regulators are installed on both the first catheter and the second catheter, and the flow regulators are located on the same side as the liquid storage tank.
[0008] In the specific implementation manner of the above infusion port puncture practice teaching aid, both the first catheter and the second catheter penetrate through the substrate and then are inserted into the liquid storage tank from the top end of the liquid storage tank. A liquid injection port is provided at the bottom end of the liquid storage tank, and a sealing cover is installed on the liquid injection port.
[0009] In the specific implementation manner of the above infusion port puncture practice teaching aid, the first infusion port and the second infusion port have the same structure. The first infusion port includes a port base and a septum. A puncture cavity is provided at the top end of the port base, the septum is detachably connected to the top end of the port base and seals the puncture cavity, the first catheter is communicated with the inside of the puncture cavity, and the second catheter is communicated with the inside of the puncture cavity of the second infusion port.
[0010] In the specific implementation manner of the above infusion port puncture practice teaching aid, the first infusion port further includes a gland. The gland is sleeved outside the port base and is threadedly connected thereto. A notch is provided at the top end of the gland for the non-damaging needle to pass through. During the process of threadedly connecting the gland with the port base, the gland squeezes the septum to fix the septum on the port base.
[0011] In the specific implementation manner of the above infusion port puncture practice teaching aid, a plurality of mounting holes are provided at the edge part of the substrate, through holes corresponding to the mounting holes are provided at the edge part of the simulated human skin, and the simulated human skin is threadedly connected with the substrate through screws passing through the through holes to realize the detachable fixed connection between the simulated human skin and the substrate.
[0012] In the specific implementation manner of the above infusion port puncture practice teaching aid, a pull-out drawer is installed at the bottom end of the substrate near the edge part.
[0013] In the specific implementation manner of the above infusion port puncture practice teaching aid, threaded holes are provided at the edge part of the substrate where the simulated human skin is not installed. Studs are threadedly connected in the threaded holes, and the bottom ends of the studs extend below the substrate to block the drawer so that it is in the pushed-in state.
[0014] In the specific implementation manner of the above infusion port puncture practice teaching aid, a plurality of spaced-apart feet are fixed at the edge part of the bottom end of the substrate.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] 1. The infusion port puncture practice teaching aid designed by the present utility model can be reused and can be used by nurses for multiple practices, which is beneficial to improving the proficiency of nurses in mastering the needle insertion method, needle insertion direction, and experiencing the "falling feeling", and reduces the puncture failure rate; the designed simulation human skin and the substrate are detachably and fixedly connected, and the simulation human skin can be replaced after being damaged, making it more flexible and durable in use. At the same time, in order to make the simulation more realistic, the substrate is designed in the shape of the upper body of the human body. In order to reduce the replacement area of the simulation human skin, the simulation human skin is designed into two pieces and symmetrically distributed. In this way, not only only one piece of simulation human skin needs to be replaced, avoiding material waste and reducing the practice cost, but also in the case where the simulation human skin covering the infusion port component needs to be replaced and there is no new simulation human skin, the other piece of simulation human skin can be used as a spare to replace the damaged simulation human skin, avoiding the problem that cannot be replaced due to the lack of new simulation human skin in some emergency situations;
[0017] 2. The diaphragm is squeezed and fixed on the port seat through the gland, and the gland and the port seat are threadedly connected and detachable. Therefore, the gland can be removed to replace the diaphragm. The diaphragm replacement method is simple and convenient, without the need to replace the port seat, reducing the practice cost;
[0018] 3. The provided drawer can store some items, making it more convenient to use. At the same time, the drawer is in the pushed-in state by the stud blocking the front side of the drawer, so that the drawer will not be pulled out randomly when transporting the overall practice teaching aid. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings, in which:
[0020] Figure 1 is the overall structural schematic diagram of the infusion port puncture practice teaching aid provided by the present utility model;
[0021] Figure 2 is Figure 1 the top view of the substrate when the simulation human skin is not installed in
[0022] Figure 3 is the bottom view of the substrate;
[0023] Figure 4 is the internal structural schematic diagram of the first infusion port;
[0024] Figure 5 the structural schematic diagram of the cooperation between the drawer and the stud.
[0025] LIST OF REFERENCE NUMERALS
[0026] 1. Substrate; 2. Simulated human skin; 3. Screw; 4. Handle plate; 5. Stud; 6. Drawer; 7. First infusion port assembly; 71. First infusion port; 711. Pressing cover; 712. Diaphragm; 713. Port base; 714. Puncture cavity; 72. First catheter; 8. Second infusion port assembly; 81. Second catheter; 82. Second infusion port; 9. Liquid storage tank; 10. Connecting ear; 11. Support leg; 12. Liquid injection port; 13. First insertion port; 14. Second insertion port; 15. Support plate; 16. Mounting hole. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the use of the terms "first", "second", etc. to limit the components is only for the convenience of distinguishing the above components. Without further statement, the above terms have no special meanings and should not be construed as indicating or implying relative importance.
[0029] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "setting", "connection" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0030] The utility model relates to the technical field of medical devices, in particular to an infusion port puncture practice teaching aid. The purpose is to solve the problem that the existing infusion port puncture cannot be practiced among nurses, nor can it be practiced on patients. If a medical infusion port is directly used for practice, the practice cost is high. If the number of practice times is small, the proficiency of nurses in mastering the needle insertion method, needle insertion direction, and experiencing the "falling feeling" is low, which easily leads to puncture failure and thus brings additional costs to patients. For this purpose, the infusion port puncture practice teaching aid provided by the utility model includes a substrate, a simulated human skin, a first infusion port assembly, a second infusion port assembly, and a liquid storage tank. The shape of the substrate is the same as that of the upper body of a human. The first infusion port assembly is arranged in the chest area at the top of the substrate to simulate the infusion port puncture under the collarbone of a human. The second infusion port assembly is arranged in the arm area at the top of the substrate. The liquid storage tank is detachably and fixedly connected to the bottom end of the substrate. The liquid storage tank is used to provide colored liquid to the first infusion port assembly and the second infusion port assembly. Two pieces of simulated human skin are detachably and fixedly connected to the top end of the substrate and are symmetrically distributed with the neck center line of the substrate as the reference. One piece of simulated human skin covers the first infusion port assembly and the second infusion port assembly. The infusion port puncture practice teaching aid designed by the utility model can be reused and can be used by nurses for multiple practices. At the same time, in order to reduce the replacement area of the simulated human skin, the simulated human skin is designed into two pieces and is symmetrically distributed. In this way, only one piece of simulated human skin needs to be replaced, avoiding material waste and reducing the practice cost. Moreover, in the case where the simulated human skin covering the infusion port assembly needs to be replaced but there is no new simulated human skin, the other piece of simulated human skin can be used as a spare and can be replaced with the other unused piece of simulated human skin to avoid the problem that cannot be replaced due to the lack of new simulated human skin in some emergency situations.
[0031] Next, the infusion port puncture practice teaching aid provided by the embodiment of the utility model will be described in detail with reference to the drawings.
[0032] Refer to Figures 1 - 3 , the utility model provides an infusion port puncture practice teaching aid, including a substrate 1, a simulated human skin 2, a first infusion port assembly 7, a second infusion port assembly 8, and a liquid storage tank 9. The shape of the substrate 1 is the same as that of the upper body of a human. The first infusion port assembly 7 is arranged in the chest area at the top of the substrate 1 to simulate the infusion port puncture under the collarbone of a human. The second infusion port assembly 8 is arranged in the arm area at the top of the substrate 1 and is used to imitate the infusion port puncture at the arm part. The liquid storage tank 9 is detachably and fixedly connected to the bottom end of the substrate 1. The liquid storage tank 9 is used to provide colored liquid to the first infusion port assembly 7 and the second infusion port assembly 8. Two pieces of simulated human skin 2 are detachably and fixedly connected to the top end of the substrate 1 and are symmetrically distributed with the neck center line of the substrate 1 as the reference. One piece of simulated human skin 2 covers the first infusion port assembly 7 and the second infusion port assembly 8.
[0033] In the above embodiments, both the first infusion port assembly 7 and the second infusion port assembly 8 are arranged on the substrate 1, which is convenient for simulating the infusion port puncture techniques at two different parts and has a wider range of uses. The simulated human skin 2 is made of silica gel material. The substrate 1 can be made of plastic material. When performing puncture practice, the side facing the nurse is the top surface, also called the apex, and the side facing away from the nurse is the bottom surface, also called the base. The liquid storage tank is made of transparent plastic, which is convenient for observing the remaining amount of the colored liquid in the liquid storage tank.
[0034] Specifically, a plurality of mounting holes 16 are provided at the edge of the substrate 1, and through holes corresponding to the mounting holes 16 are provided at the edge of the simulated human skin 2. The simulated human skin 2 is detachably and fixedly connected to the substrate 1 by screwing the screw 3 through the through hole and the mounting hole 16. A plurality of spaced-apart feet 11 are fixed to the edge of the bottom end of the substrate 1.
[0035] More specifically, at least two connecting columns are fixed to the bottom end of the substrate 1, and connecting ears 10 matched with the connecting columns are fixed to the liquid storage tank 9. Connecting holes are provided on the connecting ears 10. After the connecting columns pass through the connecting holes, they are connected with nuts to fix the liquid storage tank 9. There is a gap between the liquid storage tank 9 and the substrate 1 after connection, and the connecting ears 10 are in contact with the substrate 1.
[0036] The simulated human skin 2 and the substrate 1 are designed to be detachably and fixedly connected, so that the simulated human skin 2 can be replaced after being damaged, making it more flexible and durable in use. At the same time, in order to make the simulation more realistic, the substrate 1 is designed in the shape of the upper body of a human. In order to reduce the replacement area of the simulated human skin 2, the simulated human skin 2 is designed into two pieces and symmetrically distributed. In this way, not only only one piece of the simulated human skin 2 needs to be replaced, avoiding material waste and reducing the practice cost, but also in the case where the simulated human skin 2 covering the infusion port assembly needs to be replaced and there is no new simulated human skin 2, the other piece of the simulated human skin 2 can be used as a spare, that is, it can be replaced and used with the other unused piece of the simulated human skin 2, avoiding the problem that cannot be replaced due to the lack of new simulated human skin 2 in some emergency situations.
[0037] In one embodiment, a sponge is filled between the top end of the substrate 1 other than the first infusion port assembly 7 and the second infusion port assembly 8 and the simulated human skin 2. The sponge is adhesively fixed to the substrate 1 to make the shape of the whole simulated human skin 2 closer to the human skin.
[0038] In one embodiment, refer to Figures 2 - 3, the first infusion port assembly 7 includes a first infusion port 71 and a first catheter 72, and the second infusion port assembly 8 includes a second infusion port 82 and a second catheter 81. The first infusion port 71, the first catheter 72, the second infusion port 82, and the second catheter 81 are all bonded to the top end of the substrate 1. The liquid storage tank 9 is respectively communicated with the inside of the corresponding first infusion port 71 and the inside of the second infusion port 82 through the first catheter 72 and the second catheter 81. Flow regulators are installed on both the first catheter 72 and the second catheter 81, and the flow regulators are on the same side as the liquid storage tank 9. The flow regulator can control the liquid flow in the catheter and block the catheter when not in use, avoiding the leakage of colored liquid from the liquid storage tank 9 during operations such as handling.
[0039] Specifically, both the first catheter 72 and the second catheter 81 penetrate through the substrate 1 and then are inserted into the liquid storage tank 9 from the top end of the liquid storage tank 9. A liquid injection port 12 is provided at the bottom end of the liquid storage tank 9, and a sealing cover is installed on the liquid injection port 12. Colored liquid is injected into the liquid storage tank 9. When a non-invasive needle is inserted into the infusion port for aspiration, if the colored liquid in the liquid storage tank 9 flows back, it represents blood return, that is, the puncture is successful. Liquid is added or discharged from the liquid storage tank 9 through the liquid injection port 12. The side of the liquid storage tank 9 facing the substrate 1 is the top end, and the side facing away from the substrate 1 is the bottom end. A one-way valve that only allows air to enter the liquid storage tank can be installed on the liquid storage tank to ensure that the colored liquid in the liquid storage tank smoothly enters the corresponding first catheter or second catheter.
[0040] More specifically, a first insertion port 13 and a second insertion port 14 are provided at the top end of the liquid storage tank 9. A first plug is fixedly sleeved on the first catheter 72, and a second plug is fixedly sleeved on the second catheter 81. The first plug is inserted into the first insertion port 13 for sealing, and the second plug is inserted into the second insertion port 14 for sealing. The first plug relative to the first insertion port 13 and the second plug relative to the second insertion port 14 can be inserted and pulled out, realizing the detachable fixed connection between the first catheter 72 and the second catheter 81 and the liquid storage tank 9 respectively. The bottom ends of the first catheter 72 and the second catheter 81 extend to the bottom end of the liquid storage tank 9 to ensure that the liquid at the bottom of the liquid storage tank 9 can be drained out.
[0041] In one embodiment, refer to Figure 4The first infusion port 71 and the second infusion port 82 have the same structure. The first infusion port 71 includes a port seat 713 and a diaphragm 712. A puncture cavity 714 is provided at the top of the port seat 713. The diaphragm 712 is detachably connected to the top of the port seat 713 and seals the puncture cavity 714. The first catheter 72 is connected to the inside of the puncture cavity 714, and the second catheter 81 is connected to the inside of the puncture cavity 714 of the second infusion port 82. The diaphragm 712 is made of silicone. A non-destructive needle passing through the diaphragm 712 and inserted into the puncture cavity 714 represents a successful puncture. Since the first catheter 72 and the second catheter 81 are respectively connected to the corresponding puncture cavity 714, the non-destructive needle can draw out the colored liquid in the liquid storage tank 9 through the catheter to simulate blood return, which can prove that the puncture is successful.
[0042] In one embodiment, the first infusion port 71 further includes a gland 711, which is sleeved on the outside of the port seat 713 and threadedly connected thereto, and a notch is provided at the top of the gland 711 for allowing a non-destructive needle to pass through, and the gland 711 squeezes the diaphragm 712 during the threaded connection with the port seat 713 to fix the diaphragm 712 on the port seat 713. The diaphragm 712 is squeezed and fixed on the port seat 713 by the gland 711, and the gland 711 and the port seat 713 are threadedly connected and can be disassembled, so the diaphragm 712 can be replaced by disassembling the gland 711, and the replacement method of the diaphragm 712 is simple and convenient, and there is no need to replace the port seat 713, thereby reducing the training cost.
[0043] In one embodiment, see Figure 2 , Figure 3 and Figure 5 A pull-out drawer 6 is installed near the edge of the bottom end of the base plate 1. Some items can be stored in the drawer 6. For example, when the artificial human skin 2 is connected to the base plate 1 by screws 3, the screws 3 dropped during the disassembly of the artificial human skin 2 can be placed in the drawer 6 to avoid loss due to random placement.
[0044] Specifically, the drawer 6 is located near the waist of the human body on the base plate 1. Two parallel supporting plates 15 are fixed to the bottom end of the base plate 1, and the drawer 6 is arranged between the two supporting plates 15, and the drawer 6 can slide forward and backward relative to the supporting plates 15 to achieve pushing in or pulling out.
[0045] In one embodiment, a threaded hole is provided at the edge of the base plate 1 where the simulated human skin 2 is not installed, and a stud 5 is threadedly connected in the threaded hole, and the bottom end of the stud 5 extends to the bottom of the base plate 1 to block the drawer 6 so that it is pushed in. A handle plate 4 is fixed to the top of the stud 5, which is convenient for holding the handle plate 4 to rotate the stud 5, and the stud 5 can be moved up and down by rotating it, so that when the drawer 6 needs to be opened, the stud 5 is moved up, and when the drawer 6 is pushed in and closed, the stud 5 is moved down to block the front of the drawer 6, so that the drawer 6 can be prevented from being pulled open during the transportation process following the base plate 1, ensuring safety.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A teaching aid for practicing infusion port puncture, characterized in that: The device comprises a base plate, simulated human skin, a first infusion port assembly, a second infusion port assembly and a liquid storage tank. The shape of the base plate is the same as that of the upper body of the human body. The first infusion port assembly is arranged in the chest area at the top of the base plate to simulate the puncture of the infusion port below the clavicle of the human body. The second infusion port assembly is arranged in the arm area at the top of the base plate. The liquid storage tank is detachably fixedly connected to the bottom end of the base plate. The liquid storage tank is used to provide colored liquid to the first infusion port assembly and the second infusion port assembly. The top of the base plate is detachably fixedly connected with two pieces of simulated human skin symmetrically distributed with respect to the center line of the neck of the base plate, and one of the pieces of simulated human skin covers the first infusion port assembly and the second infusion port assembly.
2. The infusion port puncture training tool according to claim 1, characterized in that: Sponge is filled between the top of the substrate other than the first infusion port assembly and the second infusion port assembly and the simulated human skin, and the sponge is bonded and fixed to the substrate.
3. The infusion port puncture training aid according to claim 1, characterized in that: The first infusion port assembly includes a first infusion port and a first catheter, and the second infusion port assembly includes a second infusion port and a second catheter. The first infusion port, the first catheter, the second infusion port and the second catheter are all bonded to the top of the substrate. The liquid storage tank is connected to the corresponding first infusion port and second infusion port through the first catheter and the second catheter, respectively. Flow regulators are installed on the first catheter and the second catheter, and the flow regulator is located on the same side as the liquid storage tank.
4. The infusion port puncture training tool according to claim 3, characterized in that: The first conduit and the second conduit are inserted into the liquid storage box from the top of the liquid storage box after passing through the substrate. The bottom end of the liquid storage box is provided with a liquid injection port, and a sealing cover is installed on the liquid injection port.
5. The infusion port puncture training tool according to claim 3, characterized in that: The first infusion port and the second infusion port have the same structure. The first infusion port includes a port seat and a diaphragm. A puncture cavity is provided at the top of the port seat. The diaphragm is detachably connected to the top of the port seat and seals the puncture cavity. The first catheter is connected to the inside of the puncture cavity, and the second catheter is connected to the inside of the puncture cavity of the second infusion port.
6. The infusion port puncture training tool according to claim 5, characterized in that: The first infusion port also includes a gland, which is sleeved on the outside of the port seat and threadedly connected thereto. A notch is provided on the top of the gland for allowing a non-destructive needle to pass through. The gland squeezes the diaphragm during the threaded connection with the port seat to fix the diaphragm on the port seat.
7. The infusion port puncture training tool according to claim 1, characterized in that: The edge of the substrate is provided with a plurality of mounting holes, the edge of the simulated human skin is provided with through holes corresponding to the mounting holes, and the simulated human skin is threadedly connected to the mounting holes by screws passing through the through holes to achieve a detachable fixed connection between the simulated human skin and the substrate.
8. The infusion port puncture training aid according to claim 1, characterized in that: A pull-out drawer is installed at the bottom end of the base plate near the edge.
9. The infusion port puncture training aid according to claim 8, characterized in that: A threaded hole is provided at the edge of the base plate where the simulated human skin is not installed, a stud is threadedly connected in the threaded hole, and the bottom end of the stud extends to the bottom of the base plate to block the drawer and keep it in a pushed-in state.
10. The infusion port puncture training tool according to claim 1, characterized in that: A plurality of spaced supporting feet are fixed on the edge of the bottom end of the base plate.