Knee joint cavity injection practical training device
By designing a training device for intra-articular injection in the knee joint, which simulates the opening of the patellar space and the puncture of the syringe needle, the problem of newcomers having difficulty mastering intra-articular injection operations was solved, and their operational skills were effectively improved.
Patent Information
- Application Number
- CN202423238099.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Current technology lacks suitable practical training methods for newcomers to learn knee joint intra-articular injection skills, and relying on teaching and training combined with experience explanations makes it difficult to truly master the operation skills.
A knee joint intra-articular injection training device was designed, including a simulated upper joint, lower joint, sliding track and elastic sleeve, to simulate the movement of the patella and the skin of the knee joint. It provides a realistic operational experience by simulating the opening of the patellar space and the puncture of the syringe needle.
The simulation operation improved the trainees' skills in intra-articular injection of the knee joint, enabling them to master the correct operation skills in a simulated environment and overcoming the shortcomings of existing technologies that rely on experience-based explanations.
Smart Images
Figure CN223728348U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of practical training device, especially, relate to a knee cavity injection practical training device. BACKGROUND
[0002] When the inflammation, injury or pain of some tissue or organ of human body occurs, the local nerve impulse is excited and is transmitted to the central nerve of human body, and the function activity of the central nerve is affected.In order to block the incoming path of nerve impulse, maintain the normal function of central nerve and improve the nutrition of local tissue, the closed therapy can be carried out.For knee joint closed needle is to inject the injection liquid of certain concentration and capacity into the pathological region (knee cavity), so as to achieve the treatment purpose of improving local blood circulation, local anti-inflammatory, inhibiting the release of pain-causing substances and relieving pain.
[0003] Knee injection includes the puncture injection of the outer edge and inner edge of the upper pole of the patella and the puncture injection of the outer edge and inner edge of the lower pole of the patella, and a 5ml syringe is usually used.The operation method is that the person performing the injection needs to determine the position of the puncture point in the brain instead of pressing the position with the hand to puncture, the hand is a fixed point and cannot move back and forth after being placed, the injection liquid should be entirely in the knee cavity, and the purpose of uniform diffusion is achieved through the movement of the patient.It can be known that the puncture and injection of knee closed needle is an operation with high operation skill requirement, and the correct operation depends on experience.The knee cavity injection is trained in a targeted manner, so that the nurses and interns who are new to the post and have not mastered the injection skill can preliminarily master the operation skill essentials before actually operating the patient, and it is necessary to improve the medical care ability.Currently, the teaching training combined with experience explanation is usually used to promote the learning of relevant skills by new people, and there is no suitable training method, and it is necessary to be designed and developed in a targeted manner. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a knee cavity injection practical training device, which fully simulates the operation of knee cavity injection and improves the operation skill of the practical trainer.
[0005] The utility model adopts the technical scheme that a knee cavity injection practical training device, including articulated connection's simulation upper joint and simulation lower joint, install upper connecting rod on the rear part of simulation upper joint, install lower connecting rod on the lower part of simulation lower joint, install the sliding track on the front top of simulation lower joint, install simulation patella that can left and right slide moves on the sliding track, still include elastic cover, the front part of upper connecting rod and simulation upper joint, simulation lower joint and the upper part of lower connecting rod and simulation patella are enclosed inside by elastic cover;Still include the adjusting type support frame that can adjust the angle between simulation upper joint and simulation lower joint.
[0006] Preferably, a connecting base is arranged in the middle of the top of the lower joint, a connecting groove is arranged in the middle of the bottom of the upper joint, and the connecting base is arranged in the connecting groove and connected by a rotating shaft.
[0007] Preferably, an upper flexible pad is arranged to cover the upper joint, the rear part of the upper flexible pad embraces the front part of the upper connecting rod, and the upper flexible pad is fixed by an upper strap; a lower flexible pad is arranged to cover the lower joint, the lower part of the lower flexible pad embraces the upper part of the lower connecting rod, and the lower flexible pad is fixed by a lower strap.
[0008] Preferably, the sliding track is made of hard plastic, the simulated patella is made of elastic rubber, the sliding track is fixedly connected to the lower joint by a screw, and the sliding track is arranged in the anti-slip groove arranged in the bottom of the simulated patella.
[0009] Preferably, the elastic sleeve is made of transparent medical silica gel.
[0010] Preferably, the adjustable support frame comprises a base, a support seat with a shaft hole is arranged on the front part of the base, a door-shaped support is arranged on the rear part of the base, a plurality of shaft sleeves are arranged on the upper part of the door-shaped support, a plurality of elastic fixing sleeves with sleeves are arranged on the bottom, the sleeves of the elastic fixing sleeves are transversely aligned with the shaft sleeves and connected by a pin shaft, the lower end of the lower connecting rod is hingedly connected to the support seat by a hinge shaft, and the rear end of the upper connecting rod is insertedly connected to one of the elastic fixing sleeves.
[0011] The knee joint cavity injection practical training device has the advantages and positive effects that:
[0012] The knee joint cavity injection practical training device provides a simulated knee joint model, enables a practical trainer to operate a syringe to complete knee joint cavity injection operation on the knee joint model, and thus the practical trainer can master the operation skill of knee joint injection in the practical training process, and the problem that the skill cannot be truly mastered in the prior art mode of relying on teaching and training combined with experience explanation is solved.
[0013] The knee joint cavity injection practical training device in the utility model is provided with a sliding base on the front part and a simulated patella capable of sliding on the sliding base, so that in the process of practical training operation, the practical trainer can perceive the change of the internal knee joint cavity and the position of the patella external gap by sliding the simulated patella, the skin of the knee joint is simulated by arranging an elastic sleeve on the outside, the foregoing perception of the knee joint cavity and the patella gap is performed through the elastic sleeve, better perception experience can be achieved, and when the practical training injection operation is performed by using the syringe, the needle of the syringe pierces the elastic sleeve and reaches the knee joint cavity, and multiple practical training operations can enable the practical trainer to quickly master the operation skill of knee joint injection. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1It is the front view structure schematic diagram of the utility model.
[0015] In the figure,
[0016] 1, base; 2, door type support; 3, shaft sleeve; 4, pin shaft; 5, elastic fixing sleeve; 6, upper connecting rod; 7, upper binding belt; 8, simulate upper joint; 9, upper flexible pad; 10, simulate patella; 11, syringe; 12, rotating shaft; 13, connecting base; 14, simulate lower joint; 15, elastic outer sleeve; 16, sliding track; 17, lower flexible pad; 18, lower binding belt; 19, lower connecting rod; 20, hinged shaft; 21, support base. DETAILED DESCRIPTION
[0017] In order to further understand the invention content, characteristics and efficacy of the utility model, the following examples are described in detail.
[0018] Please see Figure 1 The knee joint cavity injection practical training device of the utility model, including hinged connection's simulate upper joint 8 and simulate lower joint 14, install upper connecting rod 6 in the rear part of simulate upper joint 8, install lower connecting rod 19 in the lower part of simulate lower joint 14. In this embodiment, the connecting base 13 is arranged in the top middle part of simulate lower joint 14, and the connecting groove is arranged in the bottom middle part of simulate upper joint 8, the connecting base 13 is located in the connecting groove and is connected by rotating shaft 12. The simulate upper joint 8, the upper connecting rod 6, the simulate lower joint 14, the lower connecting rod 19, the connecting base 13 and the rotating shaft 12 jointly constitute a simulated knee joint model. Since the connecting base 13 and the rotating shaft 12 are arranged, the angle of the knee joint model can be adjusted.
[0019] The sliding track 16 is installed on the front top of simulate lower joint 14, and the simulate patella 10 that can slide left and right is installed on the sliding track 16. By arranging the simulate patella 10, the aforementioned knee joint model is more complete. Generally, before the injection operation of the knee joint cavity of the patient, the patella needs to be slightly displaced to the medial side of the leg, so that the patellar gap is opened, and then the needle of the syringe 11 is inserted into the knee joint cavity and the injection operation is performed. Therefore, the simulate patella 10 arranged in the utility model can slide along the sliding track 16, which allows the practical trainer to displace the simulate patella 10 by pressing it, simulates the movement of the patient's knee joint patella in the actual injection scene, and promotes the practical trainer to perceive the "patellar gap opening" condition of the knee joint cavity injection.
[0020] In this embodiment, the sliding track 16 is made of hard plastic material, the simulated patella 10 is made of elastic rubber material, the sliding track 16 is fixedly connected with the simulated lower joint 14 by screws, and the sliding track 16 is located in the anti-slip groove at the bottom of the simulated patella 10. The elastic rubber material of the simulated patella 10 has the following effects: when the angle of the knee joint model is adjusted, the simulated upper joint 8 will produce a certain extrusion effect on the simulated patella 10 as the angle changes. The elastic rubber material allows the simulated patella 10 to adaptively deform. On the other hand, the simulated patella 10 made of elastic rubber material has a certain damping effect due to elastic extrusion and friction. Therefore, when the trainee needs to force the simulated patella 10 to move, a certain force needs to be applied, which can more realistically simulate the actual injection scene where the patient's knee patella is forced to move to open the interpatellar space.
[0021] The elastic sleeve 15 also includes a front part of the upper connecting rod 6, the simulated upper joint 8, the simulated lower joint 14, the upper part of the lower connecting rod 19, and the simulated patella 10, which are enclosed inside. In this embodiment, the elastic sleeve 15 is made of transparent medical silicone material, so that the inside can be observed through the elastic sleeve 15.
[0022] The elastic sleeve 15 is used to simulate the skin of the knee joint. Since the front part of the upper connecting rod 6, the simulated upper joint 8, the simulated lower joint 14, the upper part of the lower connecting rod 19, and the simulated patella 10 are all enclosed inside the elastic sleeve 15, the aforementioned operations of pressing the simulated patella 10 to move, opening the interpatellar space, and injecting are all performed outside the elastic sleeve 15, which can better simulate the actual injection scene where the interpatellar space opening position and the knee cavity state are determined through the patient's knee skin.
[0023] The medical silicone material has good elasticity. During injection training, the needle of the syringe 11 pierces the elastic sleeve 15 and observes the internal puncture situation through the elastic sleeve 15, which promotes the trainee's mastery of knee cavity injection skills after multiple training. After a period of use, the elastic sleeve 15 may be deformed and aged, and there may be many needle holes in the middle position, which is not suitable for continued use. At this time, the elastic sleeve 15 can be disassembled and replaced with a new elastic sleeve 15.
[0024] In this embodiment, the upper flexible pad 9 is used to cover the upper joint 8, the rear part of the upper flexible pad 9 embraces the front part of the upper connecting rod 6, and the upper flexible pad 9 is fixed by the upper strap 7. In this embodiment, the lower flexible pad 17 is used to cover the lower part of the lower joint 14, the lower part of the lower flexible pad 17 embraces the upper part of the lower connecting rod 19, and the lower flexible pad 17 is fixed by the lower strap 18. The upper flexible pad 9 and the lower flexible pad 17 are used to fill the inside of the elastic cover 15, so that the elastic cover 15 is inflated as a whole, which makes the knee joint model closer to the real knee joint, and achieves better simulation effect. The upper flexible pad 9 and the lower flexible pad 17 are made of medical silica gel material, so they have certain flexibility and elasticity, and can provide better touch feeling, so that the trainee can feel as if he is touching the real knee joint of the patient during the injection training, and achieves better training experience.
[0025] Specifically, as shown in the drawings, the front part of the upper flexible pad 9 is spherical, the upper joint 8 is covered inside, the window is arranged at the bottom of the front part of the upper flexible pad 9, so that the connecting base 13 can pass through the window and enter the connecting groove at the bottom of the upper joint 8, and the rear part is firmly fixed with the upper connecting rod 6 by the upper strap 7. The lower flexible pad 17 is in the form of a sleeve, the upper part is fixed with the lower part of the lower joint 14 by adhesion or strap binding, and the lower part is firmly fixed with the lower connecting rod 19 by the lower strap 18.
[0026] The adjusting support frame is also included, which can adjust the angle between the upper joint 8 and the lower joint 14, supports the main part of the training device, and provides the angle adjusting function, which is used to adjust the knee joint model to different angle postures, and simulate different knee joint cavity injection scenes.
[0027] In this embodiment, the adjusting support frame includes the base 1, the support seat 21 with the shaft hole is arranged at the front part of the base 1, the door-shaped support 2 is arranged at the rear part of the base 1, the door-shaped support 2 includes two opposite support rods, a plurality of shaft sleeves 3 are arranged at the upper part of the door-shaped support 2, and a plurality of elastic fixing sleeves 5 with sleeve pipes are arranged at the bottom, the sleeve pipes of the elastic fixing sleeves 5 are transversely aligned with the shaft sleeves 3, and the elastic fixing sleeves 5 are connected by the pin shafts 4.
[0028] The lower end of the lower connecting rod 19 is hingedly connected with the support seat 21 by the hinge shaft 20, and the rear end of the upper connecting rod 6 is insertedly connected with one of the elastic fixing sleeves 5. When the angle of the knee joint model needs to be adjusted, the rear end of the upper connecting rod 6 is disconnected with the current elastic fixing sleeve 5, and is insertedly connected with another elastic fixing sleeve 5 at another height position.
[0029] Assembly of the training device:
[0030] The connecting base 13 simulating the lower joint 14 is embedded into the connecting groove at the bottom of the upper joint 8 and connected by the rotating shaft 12, then the upper flexible pad 9 is installed on the upper joint 8 and the rear part of the upper flexible pad 9 is fixedly connected with the upper connecting rod 6 by the upper band 7, then the lower flexible pad 17 is installed on the lower joint 14 and the lower part of the lower flexible pad 17 is fixedly connected with the lower connecting rod 19 by the lower band 18, then the elastic outer cover 15 is sleeved and installed; then the lower end of the lower connecting rod 19 is connected with the support base 21 by the hinged shaft 20 and the rear end of the upper connecting rod 6 is connected with one of the elastic fixing sleeves 5.
[0031] The training operation mode is as follows:
[0032] The trainee holds the injector 11 with one hand and touches the simulated patella 10 with the other hand, appropriately applies pressure to the simulated patella 10 to force it to move inwardly, observes the internal situation through the elastic outer cover 15 and perceives the changes of the internal knee joint cavity and the formation of the patellar gap opening (located at the outside of the simulated patella 10), determines the formation of the appropriate patellar gap opening, then holds the injector 11 to pierce the elastic outer cover 15 at the appropriate position and makes the needle pass through the patellar gap opening to enter the knee joint cavity (the space behind the simulated patella 10), observes the internal situation through the elastic outer cover 15 and obtains the operation perception in the process; the foregoing injection training operation is repeated to improve the knee joint cavity injection operation skill of the trainee.
Claims
1. A training device for intra-articular injection in the knee joint, characterized in that: The simulation knee joint (8) and the simulation lower joint (14) are connected by a hinge, an upper connecting rod (6) is installed at the back of the simulation upper joint (8), a lower connecting rod (19) is installed at the lower part of the simulation lower joint (14), a sliding rail (16) is installed at the front top of the simulation lower joint (14), a simulation patella (10) is installed on the sliding rail (16) and can slide left and right, an elastic cover (15) is further included, which encloses the front part of the upper connecting rod (6), the simulation upper joint (8), the simulation lower joint (14), the upper part of the lower connecting rod (19), and the simulation patella (10) inside, and an adjustable support frame is further included, which can adjust the angle between the simulation upper joint (8) and the simulation lower joint (14).
2. The knee joint injection training device of claim 1, wherein the knee joint injection training device further comprises a second knee joint injection training device. A connecting base (13) is arranged at the middle top of the simulation lower joint (14), a connecting groove is arranged at the middle bottom of the simulation upper joint (8), the connecting base (13) is arranged in the connecting groove and connected by a rotating shaft (12).
3. The knee joint intra-articular injection training device as described in claim 2, characterized in that: An upper flexible pad (9) is further included, which covers the simulation upper joint (8), the back of the upper flexible pad (9) embraces the front part of the upper connecting rod (6) and is fixed by an upper binding belt (7), a lower flexible pad (17) is further included, which covers the lower part of the simulation lower joint (14), the lower part of the lower flexible pad (17) embraces the upper part of the lower connecting rod (19) and is fixed by a lower binding belt (18).
4. The knee joint intra-articular injection training device as described in claim 3, characterized in that: sliding... The sliding rail (16) is made of hard plastic, the simulation patella (10) is made of elastic rubber, the sliding rail (16) is fixedly connected with the simulation lower joint (14) by screws, and an anti-slip groove is arranged at the bottom of the simulation patella (10) and the sliding rail (16) is arranged in the anti-slip groove.
5. The knee joint injection training device of claim 4, wherein: The elastic cover (15) is made of transparent medical silicone.
6. The knee joint injection training device of any one of claims 1 to 5, wherein: The adjustable support frame includes a base (1), a support seat (21) with a shaft hole is installed at the front of the base (1), a door-shaped support (2) is installed at the back of the base (1), a plurality of shaft sleeves (3) are installed at the upper part of the door-shaped support (2), a plurality of elastic fixing sleeves (5) with sleeves are further included, the sleeves of the elastic fixing sleeves (5) are horizontally aligned with the shaft sleeves (3) and connected by pins (4), the lower end of the lower connecting rod (19) is hingedly connected with the support seat (21) by a hinge shaft (20), and the rear end of the upper connecting rod (6) is insertedly connected with one of the elastic fixing sleeves (5).