Injection teaching apparatus for medical care

Abstract

The application discloses a professional medical nursing injection teaching instrument, and belongs to the technical field of medical teaching instruments, which comprises a workbench, a display screen is arranged on the upper surface of the workbench, a bionic arm model for simulating a real human arm is arranged above the display screen on the workbench, an injector is arranged above the workbench, the injector is arranged above the bionic arm model through an injector mounting frame, the injector is movably arranged on the injector mounting frame, a camera assembly is arranged on one side of the workbench, a lens of the camera assembly is downward, and the camera assembly is used for collecting image information during injection, a main control unit is arranged in the workbench, and the display screen and the camera assembly are electrically connected with the main control unit. The application realizes full-process quantitative evaluation from a hand method to establishment of an infusion channel, significantly improves the authenticity and training efficiency of injection teaching, and greatly expands the training range.

Description

Technical Field

[0001] This invention belongs to the field of medical teaching equipment technology, and more specifically relates to a professional teaching instrument for medical and nursing injection. Background Technology

[0002] Intravenous puncture and infusion are core skills that nursing staff must master. Traditional training methods often rely on simple rubber arm models, where trainees can only judge whether the needle has entered the blood vessel by feel. This lacks objective testing methods, and assessment depends on the teacher's visual observation, which is highly subjective and inefficient.

[0003] Existing technologies include puncture models with indicator lights, but these only provide simple "success" or "failure" signals and cannot provide crucial information such as puncture depth, angle, or whether the posterior wall of the blood vessel has been punctured. Furthermore, the fixed blood vessel diameter in existing models makes it difficult to train puncture techniques tailored to different vascular conditions, such as in children and adults. In addition, the lack of standardized motion capture and real-time comparison and error correction during training makes it difficult for trainees to maintain proper operating postures.

[0004] Therefore, how to provide a professional injection teaching device for medical care is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a professional medical and nursing injection teaching instrument, which adopts the following technical solution: A professional medical and nursing injection teaching device includes a workbench with a display screen on its upper surface; a bionic arm model simulating a real human arm is mounted on the workbench above the display screen; a syringe is mounted on the workbench above the bionic arm model via a syringe mounting bracket; the syringe is movably mounted on the syringe mounting bracket; a camera assembly is mounted on one side of the workbench with its lens pointing downwards to capture image information during injection; a main control unit is located inside the workbench, and the display screen and camera assembly are electrically connected to the main control unit.

[0006] Furthermore, the syringe mounting bracket includes two sets of L-shaped mounting brackets, the lower ends of which are slidably mounted on the worktable; the other ends of the two sets of mounting brackets are respectively rotatably connected to both ends of the syringe mounting base through a set of rotating limiting components; the syringe mounting base is provided with a through hole in the middle for mounting a syringe, and the syringe can be installed on the syringe mounting base through the through hole from one side, and the syringe barrel boss can abut against one side of the through hole.

[0007] Furthermore, the rotation limiting assembly includes a first turntable and a second turntable. The first turntable is fixedly connected to the mounting bracket, and the second turntable is fixedly connected to the syringe mounting base. A gear protrudes from the center of the first turntable, and the gear has multiple sets of arc-shaped teeth evenly arranged circumferentially. A circular groove is provided in the center of the second turntable, and the gear is embedded in the circular groove. Multiple sets of elastic limiting components are evenly arranged circumferentially on the inner wall of the circular groove. One end of the elastic limiting component is engaged in the gap between the teeth to provide rotational damping for the gear.

[0008] Furthermore, the camera assembly includes a camera mount and a depth camera matrix; the lower end of the camera mount is mounted on the worktable, and the depth camera matrix is ​​mounted on the camera mount, both of which are electrically connected to the main control unit.

[0009] Furthermore, a first simulation area is provided on one side of the bionic arm model; at least three simulated blood vessels of different diameters are embedded inside the first simulation area, and the two ends of the simulated blood vessels are connected to a circulating fluid supply system set inside the workbench to simulate real blood flow.

[0010] Furthermore, the two ends of the bionic arm model are slidably mounted on the workbench via a set of connecting joints; the simulated blood vessel extends downward through the connecting joints into the interior of the workbench and connects to the circulating fluid supply system.

[0011] Furthermore, the circulating fluid supply system includes a simulated blood reservoir, a first multi-head diverter valve, a second multi-head diverter valve, and a micropump. The opening of the simulated blood reservoir is connected to one end of the first multi-head diverter valve via a pipe. The other end of the first multi-head diverter valve is provided with multiple sets of openings, each set of openings being connected to a micropump inlet. The outlet of the micropump is connected to one end of the simulated blood vessel via a pipe. The other end of the simulated blood vessel is connected to one end of the multiple openings of the second multi-head diverter valve via a pipe. The other end of the second multi-head diverter valve is connected to the opening of the simulated blood reservoir via a pipe. A solenoid valve and a first flow meter are sequentially installed on the pipeline between the micropump and the simulated blood vessel. A second flow meter is installed between the other end of the simulated blood vessel and the second multi-head diverter valve.

[0012] Furthermore, one end of the connecting joint is connected to the bionic arm model, and the other end is connected to a slider. Both sides of the worktable are embedded with slides, and the slider is slidably embedded in the slides. The connecting joint is hollow inside to allow multiple sets of simulated blood vessels to pass through. The bottom of the slide is provided with a through groove for passing through the simulated blood vessels.

[0013] Furthermore, a membrane layer is provided on the inner wall of the slide to increase sliding damping, thereby increasing the damping of the slider sliding within the slide.

[0014] Furthermore, a second simulation area is provided on one side of the bionic arm model to simulate the skin and muscle conditions of other parts of the human body. The second simulation area is provided with multiple sub-regions corresponding to different injection methods. A flexible pressure sensor array is embedded in the corresponding tissue base within each sub-region. The flexible pressure sensor array is electrically connected to the main control unit.

[0015] The beneficial effects of this invention are as follows: With its built-in multiple sets of simulated blood vessels of different diameters and adjustable circulation system, it is suitable for intravenous injection and realistically simulates the vascular characteristics of different populations, greatly expanding the training range.

[0016] By directly detecting the flow of fluid within the blood vessel using liquid flow rate, this method fundamentally overcomes the limitation of traditional electrical contact sensors that can only detect the contact between the metal needle tip and the electrode, and can more realistically reflect the successful state of injection and infusion.

[0017] The camera component setup enables digital acquisition of puncture techniques and needle insertion angles, as well as real-time comparison and error correction of standard paths, upgrading training from simple result evaluation to quantitative process guidance.

[0018] The bionic arm model is equipped with multiple simulation areas, which can provide human tissue suitable for different injection methods, further expanding the training range.

[0019] The main control unit processes pressure and flow signals separately, accurately identifies puncture situations, compares them according to the built-in program, displays the operation status and provides guidance, significantly improving learning efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a top view of the worktable structure of the present invention.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 This is a schematic diagram of the circulating liquid supply system of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the first and second turntables of the present invention.

[0026] In the figure: 1-Workbench; 2-Display screen; 3-Bionic arm model; 4-Simulated blood vessel; 5-Instrument; 6-Outrigger; 7-Connecting connector; 8-Slider; 9-Slide rail; 10-Through groove; 11-Blood-like reservoir; 12-First multi-head diverter valve; 13-Second multi-head diverter valve; 14-Micro pump; 15-Solenoid valve; 16-First flow meter; 17-Second flow meter; 18-Mounting bracket; 19-Instrument mounting base; 20-First turntable; 21-Second turntable; 22-Gear; 23-Limit ball; 24-Camera mounting base; 25-Depth camera matrix. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see the appendix Figure 1-5 This invention provides a professional medical and nursing injection teaching instrument, including a workbench 1. A display screen 2 is mounted on the upper surface of the workbench 1 to display standard operating procedures and key points. Above the display screen 2, a bionic arm model 3 simulating a real human arm is mounted on the workbench 1. A syringe 5 is mounted above the workbench 1 and is supported on the bionic arm model 3 via a syringe mounting bracket. The syringe 5 is movably mounted on the syringe mounting bracket, and its insertion angle can be adjusted by rotating it above the bionic arm model 3 to accommodate different injection methods.

[0029] A camera assembly is installed on one side of the workbench 1, with the lens of the camera assembly pointing downwards to collect image information during injection.

[0030] The workbench 1 is also equipped with a main control unit, and the display screen 2 and camera assembly are electrically connected to the main control unit. The main control unit has a built-in standard injection puncture model, which can compare the trainee's operation with the standard injection puncture model and display a visual deviation prompt with image overlay on the display screen 2.

[0031] The workbench 1 is equipped with four sets of support legs 6 at its lower part, which are used to support the workbench 1.

[0032] The bionic arm model 3 is made of silicone bionic material, and a first simulation area is set on one side.

[0033] The first simulation area is embedded with at least three simulated blood vessels 4 of different diameters. The two ends of the simulated blood vessels 4 are connected to a circulating fluid supply system set inside the workbench 1 to simulate real blood flow.

[0034] In one embodiment of the present invention, a child vein simulation vessel with a diameter of 2 mm, an adult peripheral vein simulation vessel with a diameter of 4 mm, and a large vein simulation vessel with a diameter of 6 mm are embedded in the first simulation area to simulate the condition of superficial veins on the back of the hand, forearm, and elbow during intravenous injection.

[0035] The bionic arm model 3 also has a second simulation area on one side to simulate the skin and muscle conditions of other parts of the human body, allowing trainees to simulate other injection methods.

[0036] The second simulation area is equipped with the same epidermis, dermis, subcutaneous tissue, and muscle layers as human skin and muscles. It also includes multiple sub-regions corresponding to various injection methods (such as intramuscular injection, subcutaneous injection, and intradermal injection). Within each sub-region, a flexible pressure sensor array is embedded in the corresponding tissue base to detect pressure changes as the syringe needle tip penetrates the corresponding tissue layers, thereby determining whether the needle tip has reached the puncture depth. The flexible pressure sensor array is electrically connected to the main control unit, transmitting signals for analysis and displaying the puncture status on the display screen 2, along with corresponding adjustment prompts.

[0037] The bionic arm model 3 is slidably mounted on the workbench 1 at both ends via a set of connecting joints 7. Each connecting joint 7 is a 90-degree bend, with one end connected to the bionic arm model 3 and the other end connected to a slider 8. Slide tracks 9 are embedded in both sides of the workbench 1, and the slider 8 is slidably embedded within these tracks. A membrane layer is provided on the inner wall of the slide track 9 to increase sliding damping, thereby increasing the damping of the slider 8 as it slides within the track 9. This allows the trainee to adjust the position of the bionic arm model 3 according to training needs and also prevents small-range sliding from occurring when the trainee applies force to the bionic arm model 3 after adjustment.

[0038] The connecting joint 7 is hollow inside and is used to pass through multiple sets of simulated blood vessels 4; the bottom of the slide 9 is provided with a through groove 10 for passing through the simulated blood vessels 4; the simulated blood vessels 4 pass downward through the connecting joint 7 and the through groove 10, extend into the workbench 1, and are connected to the circulating liquid supply system located in the workbench 1.

[0039] The circulating fluid supply system includes a simulated blood reservoir 11, a first multi-head diverter valve 12, a second multi-head diverter valve 13, and a micropump 14. The opening of the simulated blood reservoir 11 is connected to one end of the first multi-head diverter valve 12 via a pipe. The other end of the first multi-head diverter valve 12 has multiple sets of openings, each connected to an inlet of a micropump 14. The outlet of the micropump 14 is connected to one end of the simulated blood vessel 4 via a pipe. The other end of the simulated blood vessel 4 is connected to one end of the multiple openings of the second multi-head diverter valve 13 via a pipe. The other end of the second multi-head diverter valve 13 is connected to the opening of the simulated blood reservoir 11 via a pipe. A solenoid valve 15 and a first flow meter 16 are sequentially installed on the pipeline between the micropump 14 and the simulated blood vessel 4. A second flow meter 17 is installed between the other end of the simulated blood vessel 4 and the second multi-head diverter valve 13.

[0040] Multiple sets of micropumps 14 and solenoid valves 15 are connected to simulated blood vessels of different diameters to set different liquid flow rates and pulsation pressures to simulate blood flow under different physiological conditions.

[0041] The entire pipeline forms a circulating fluid supply loop. The first flow meter 16 and the second flow meter 17 are respectively installed at the inlet and outlet of the simulated blood vessel 4 to measure the flow difference between the inlet and outlet of the simulated blood vessel 4. Both the first flow meter 16 and the second flow meter 17 are electronic flow meters and are electrically connected to the main control unit to transmit flow data to the main control unit for determining the flow change before and after the simulated blood vessel 4.

[0042] The syringe mounting bracket includes two sets of L-shaped mounting brackets 18, the lower ends of which are slidably mounted on the worktable 1; the other ends of the two sets of mounting brackets 18 are respectively rotatably connected to the two ends of the syringe mounting base 19 through a set of rotating limiting components.

[0043] The syringe mounting base 19 has a through hole in the middle for mounting the syringe 5. The syringe 5 can be mounted on the syringe mounting base 19 through the through hole from one side. The syringe barrel boss of the syringe 5 can abut against one side of the through hole and can rotate synchronously with the syringe mounting base 19 to adjust the injection angle.

[0044] The rotation limiting assembly includes a first turntable 20 and a second turntable 21. The first turntable 20 is fixedly connected to the mounting bracket 18, and the second turntable 21 is fixedly connected to the syringe mounting base 19. A gear 22 is protruding from the center of the first turntable 20, and the gear 22 has multiple sets of arc-shaped teeth evenly arranged circumferentially. A circular groove is provided in the center of the second turntable 21, and the gear 22 is embedded in the circular groove. Multiple sets of elastic limiting components are evenly arranged circumferentially on the inner wall of the circular groove. One end of the elastic limiting component is engaged in the gap between the teeth, which can provide rotational damping for the gear 22.

[0045] The elastic limiting component can be configured as a limiting ball 23 connected to a spring, or as a limiting post rotatably mounted in a circular groove, with springs installed at both ends of the limiting post to achieve elastic limiting. The elastic limiting component can also be configured as other structures capable of achieving rotational damping.

[0046] In one embodiment of the present invention, the gear has 72 sets of teeth, and the angular displacement between two adjacent sets of teeth is set to 5°. The syringe 5 can rotate synchronously with the syringe mounting base 19 by the same angle, and each angle rotation can be controlled within 5°, so as to accurately control the injection angle of the syringe 5.

[0047] The camera assembly includes a camera mounting base 24 and a depth camera matrix 25. The lower end of the camera mounting base 24 is mounted on the worktable 1, and the depth camera matrix 25 is mounted on the camera mounting base 24, both of which are electrically connected to the main control unit. The lenses of the depth camera matrix 25 are all focused on the operating area to acquire the trainee's operations in real time and transmit the information to the main control unit.

[0048] The main control unit processes the image information and compares it with the standard injection puncture model. It displays a visual deviation prompt of the image superimposed on the display screen 2 and compares it with the data signal transmitted back by the flow meter to determine whether the trainee has successfully injected intravenously or otherwise. The signal is displayed on the display screen 2 and corresponding guidance signals are given.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A professional teaching instrument for medical and nursing injections, characterized in that, The device includes a workbench (1), on which a display screen (2) is mounted; a bionic arm model (3) for simulating a real human arm is mounted on the workbench (1) above the display screen (2); a syringe (5) is mounted on the workbench (1), and the syringe (5) is mounted on the bionic arm model (3) via a syringe mounting bracket; the syringe (5) is movably mounted on the syringe mounting bracket; a camera assembly is mounted on one side of the workbench (1), with the lens of the camera assembly pointing downwards, for collecting image information during injection; a main control unit is provided inside the workbench (1), and the display screen (2) and the camera assembly are electrically connected to the main control unit.

2. The professional medical and nursing injection teaching instrument according to claim 1, characterized in that, The syringe mounting bracket includes two sets of L-shaped mounting brackets (18), the lower ends of which are slidably mounted on the worktable (1); the other ends of the two sets of mounting brackets (18) are respectively rotatably connected to both ends of the syringe mounting base (19) through a set of rotating limiting components; the syringe mounting base (19) is provided with a through hole for mounting a syringe (5) in the middle, and the syringe (5) can be installed on the syringe mounting base (19) through the through hole from one side, and the syringe barrel boss of the syringe (5) can abut against one side of the through hole.

3. The professional medical and nursing injection teaching instrument according to claim 2, characterized in that, The rotation limiting assembly includes a first turntable (20) and a second turntable (21). The first turntable (20) is fixedly connected to the mounting bracket (18), and the second turntable (21) is fixedly connected to the syringe mounting base (19). A gear (22) is protruding from the center of the first turntable (20), and the gear (22) is uniformly provided with multiple sets of arc-shaped teeth in the circumferential direction. A circular groove is provided in the center of the second turntable (21), and the gear (22) is embedded in the circular groove. Multiple sets of elastic limiting components are uniformly provided in the circumferential direction on the inner wall of the circular groove. One end of the elastic limiting component is engaged in the gap between the teeth to provide rotational damping for the gear (22).

4. The professional medical and nursing injection teaching instrument according to claim 1, characterized in that, The camera assembly includes a camera mounting base (24) and a depth camera matrix (25); the lower end of the camera mounting base (24) is mounted on the worktable (1), and the depth camera matrix (25) is mounted in a matrix on the camera mounting base (24), and both are electrically connected to the main control unit.

5. The professional medical and nursing injection teaching instrument according to claim 1, characterized in that, The bionic arm model (3) has a first simulation area on one side; at least three simulated blood vessels (4) of different diameters are embedded in the first simulation area. The two ends of the simulated blood vessels (4) are connected to the circulating fluid supply system set inside the workbench (1) to simulate real blood flow.

6. The professional medical and nursing injection teaching instrument according to claim 5, characterized in that, The bionic arm model (3) is slidably mounted on the workbench (1) at both ends through a set of connecting joints (7); the simulated blood vessel (4) extends downward through the connecting joints (7) into the workbench (1) and is connected to the circulating fluid supply system.

7. The professional medical and nursing injection teaching instrument according to claim 5, characterized in that, The circulating fluid supply system includes a simulated blood reservoir (11), a first multi-head diverter valve (12), a second multi-head diverter valve (13), and a micro pump (14). The opening of the simulated blood reservoir (11) is connected to one end of the first multi-head diverter valve (12) through a pipe. The other end of the first multi-head diverter valve (12) is provided with multiple sets of openings, which are respectively connected to the inlet of a set of micro pumps (14). The outlet of the micro pump (14) is connected to one end of the simulated blood vessel (4) through a pipe. The other end of the simulated blood vessel (4) is connected to one end of the multiple openings of the second multi-head diverter valve (13) through a pipe. The other end of the second multi-head diverter valve (13) is connected to the opening of the simulated blood reservoir (11) through a pipe. A solenoid valve (15) and a first flow meter (16) are sequentially arranged on the pipeline between the micro pump (14) and the simulated blood vessel (4). A second flow meter (17) is arranged between the other end of the simulated blood vessel (4) and the second multi-head diverter valve (13).

8. The professional medical and nursing injection teaching instrument according to claim 6, characterized in that, One end of the connecting joint (7) is connected to the bionic arm model (3), and the other end is connected to a slider (8). Both sides of the workbench (1) are embedded with slides (9). The slider (8) is slidably embedded in the slides (9). The connecting joint (7) is hollow inside and is used to pass through multiple sets of simulated blood vessels (4). The bottom of the slides (9) is provided with a through groove (10) for passing through the simulated blood vessels (4).

9. The professional medical and nursing injection teaching instrument according to claim 8, characterized in that, The inner wall of the slide (9) is provided with a membrane layer for increasing sliding damping, which is used to increase the damping of the slider (8) sliding in the slide (9).

10. The professional medical and nursing injection teaching instrument according to claim 1, characterized in that, The bionic arm model (3) also has a second simulation area on one side for simulating the skin and muscle conditions of other parts of the human body. The second simulation area is provided with multiple sub-areas corresponding to different injection methods. A flexible pressure sensor array is embedded in the corresponding tissue base of each sub-area. The flexible pressure sensor array is electrically connected to the main control unit.

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