Multifunctional knee joint orthosis based on 3D printing

Abstract

The utility model discloses a multifunctional knee joint orthosis based on 3D printing, and belongs to the technical field of medical instruments. According to the shape of the legs / feet of a user, the positions of the acupuncture points of the legs or the feet selected by traditional Chinese medicine and functional image data, 3D printing is conducted on a finished product, protrusions matched with the acupuncture points of the legs or the feet are arranged on the orthotics, the protrusions face the acupuncture points of the legs or the feet from the orthotics, and medicine acting on the acupuncture points corresponding to the protrusions is arranged in the protrusions. The medicine release device is used for releasing medicine to act on acupuncture points, so that the orthosis has the functions of orthosis and treatment. The orthopedic standard can be adjusted according to the abnormity of the leg shape and lower limb biomechanics of a user, acupuncture point positions are positioned according to lower limb data of a patient in a personalized mode, and precise customization is achieved. The lower limb orthosis not only can correct an abnormal lower limb biomechanical structure, but also can treat legs or feet under the combined action of the bulges and the medicines, so that the orthosis has an orthosis function and a treatment function except for the orthosis function.

Description

Technical Field

[0001] The utility model relates to a multifunctional knee joint orthosis based on 3D printing, belonging to the technical field of medical equipment. Background Art

[0002] The main function of a knee orthosis is to increase the joint space on the inside or outside of the knee joint, fix the knee joint within a certain range of movement, reduce the load on the affected side of the joint to relieve pain, and at the same time achieve the purpose of correcting the force line of the lower limbs.

[0003] However, the existing knee joint orthosis only performs the above correction by physical adjustment, that is, the orthosis itself restrains the knee joint to perform correction, and has no advantages other than correction, so it has limitations. Utility Model Content

[0004] The utility model provides a multifunctional knee joint orthosis based on 3D printing, which solves the problem that the existing knee joint orthosis is corrected only by material adjustment, that is, the orthosis itself restrains the knee joint and has no advantages other than correction.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0006] A multifunctional knee joint orthosis based on 3D printing, wherein the orthosis is 3D printed according to the user's leg / foot shape, the location of the leg or foot acupuncture points selected by traditional Chinese medicine, and functional imaging data; the orthosis is provided with protrusions matching the leg or foot acupuncture points, and the protrusions extend from the orthosis toward the leg or foot acupuncture points; the protrusions are provided with drugs that act on the acupuncture points corresponding to the protrusions, and are used to release the drugs to act on the acupuncture points, thereby enabling the orthosis to have orthopedic and therapeutic functions.

[0007] As a preferred example, the functional imaging data include leg / foot shape data from functional magnetic resonance imaging, diffusion tensor imaging, and positron emission tomography.

[0008] As a preferred example, the orthosis includes a U-shaped semi-enclosed fixing sleeve for the calf and a U-shaped semi-enclosed fixing sleeve for the ankle, and the U-shaped semi-enclosed fixing sleeve for the calf and the ankle are integrally formed and used for orthopedics of the calf and foot. The orthosis is also provided with straps for fixing at the ankle and calf.

[0009] As a preferred example, the orthosis is also provided with ventilation holes, which are respectively used to increase the ventilation and heat dissipation effects of the calf and ankle, thereby increasing the comfort of the wearer; and to reduce the weight of the orthosis, making it easier to move around outdoors, while also increasing the comfort of wearing; and also reducing the occurrence of blood stagnation, thereby ensuring normal blood circulation in the soft tissues around the knee joint and the body parts below.

[0010] As a preferred example, through holes are respectively provided at both ends of the protrusion, so that the medicine can enter the protrusion through the through holes located on the outside of the orthosis and go out from the through holes located on the inside of the orthosis to act on the acupuncture points.

[0011] As a preferred example, the protrusion includes an attachment layer and a protrusion drug-carrying layer. The back side of the attachment layer is bonded to the orthosis, and the top of the attachment layer is plugged into the protrusion drug-carrying layer to control the replacement of the drug. A film for sealing the through hole is provided on the top of the protrusion drug-carrying layer to tear open the film so that the drug can pass through and act on the acupuncture points of the human body.

[0012] As a preferred example, the height of the protrusion is 1-1.5 cm, and the diameter of the protrusion is 3 cm.

[0013] As a preferred example, any one or more of polylactide (PLA), PVC plastic, ABS plastic, carbon fiber composite material, polypropylene, polyethylene, acrylic resin, silicone resin, and acryl resin.

[0014] The beneficial effects of the utility model are:

[0015] 1. The orthotic standard can be adjusted according to the user's leg shape and lower limb biomechanical abnormalities, and the acupoints can be located according to the patient's lower limb data to achieve precise customization.

[0016] 2. 3D printing is adopted, which is simple to make, easy to wear, light and comfortable, and increases user compliance. At the same time, it also meets the patient's demand for personalized knee orthosis, with stable structure and reasonable design, which does not affect the normal activities of the knee joint, has good orthopedic effect and is conducive to rehabilitation treatment.

[0017] 3. Based on the knee orthosis, the utility model adds protrusions suitable for different types of diseases or protrusions with acupoint combined drug effects according to the treatment goals. It can perform combined treatment through acupoint stimulation and drug sustained release while providing correction, support and protection. At the same time, the adhesion of the attachment layer can facilitate the removal of the protrusion from the orthosis, and timely replace the expired drug in the drug-carrying layer.

[0018] 4. The utility model can not only correct the abnormal biomechanical structure of the lower limbs, but also the combined effect of the protrusions and the medicine can have a therapeutic effect on the legs or feet, thereby realizing that the orthosis can have orthopedic and therapeutic functions other than orthopedic. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a structural side view of the utility model;

[0021] Figure 3 for Figure 1 The structural diagram of part A in the figure;

[0022] Figure 4 is a schematic diagram of the structure of the convex stimulator;

[0023] Figure 5 This is a bottom view of the structure of the raised stimulator.

[0024] In the figure: orthosis 1; raised stimulator 2; through hole 3; raised drug-carrying layer 4; attachment layer 5; air vent 6; and strap 7. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations.

[0026] The knee joint is the largest load-bearing joint in the human body. During daily walking, the contact pressure between the femur and tibia is 8 to 9 times the body weight, which makes knee osteoarthritis prone to occur. As people age, the joint gap between the femur and tibia gradually decreases, friction increases, and cartilage is worn, causing joint degeneration and limited range of motion.

[0027] Therefore, relieving pain and improving knee joint mobility are the main goals of knee osteoarthritis treatment. At present, knee osteoarthritis is mainly corrected by knee orthotic braces. However, the existing knee orthotic braces are designed with three-point or four-point force principles and have a simple structure. However, due to the different leg shapes of patients, mass-produced knee orthoses cannot meet the needs of each individual and the use effect is poor. The pain relief effect of simply using traditional orthoses is not very obvious in the short term and the effect is slow. Therefore, the following scheme is adopted, which mainly uses orthotics and combines leg / foot acupoints for treatment, so that the orthosis has dual functions. However, acupoints are special parts of the body where the qi and blood of the internal organs and meridians of the human body are infused on the body surface. Taking the treatment of knee osteoarthritis as an example, local acupoints are selected. According to the theories of "liver governs tendons", "diseases caused by gallbladder meridian govern bones" and "stomach meridian is a meridian with more qi and blood", acupoints on the three meridians of foot Jueyin liver meridian, foot Shaoyang gallbladder meridian and foot Yangming stomach meridian are mostly selected. Acupuncture points around the knee joint are selected and matched with distal acupuncture points. Through a certain amount of stimulation, the circulation of qi and blood around the knee joint and lower limbs can be regulated. If the circulation is smooth, there will be no pain, thereby achieving the purpose of regulating qi and blood, dredging meridians, and relieving pain. If combined with drug intervention at the same time, a better therapeutic effect can be achieved. Among them, the utility model mainly uses Yinlingquan, Zusanli, Taixi acupoints, and Yongquan acupoints.

[0028] It should be noted that this orthosis needs to be used under the guidance of doctors and nurses with knowledge of traditional Chinese medicine. The reason is that except for doctors and nurses with knowledge of traditional Chinese medicine, ordinary people (especially patients) do not know the names or locations of acupuncture points on the human body, the degree of treatment, etc.

[0029] like Figure 1-5 As shown, a multifunctional knee joint orthosis based on 3D printing is shown, in which the orthosis 1 is 3D printed according to the user's leg / foot shape, the location of the leg or foot acupoints selected by traditional Chinese medicine, and the functional imaging data. The orthosis 1 is provided with a protruding stimulator 2 that matches the leg or foot acupoints, and the protrusion extends from the orthosis 1 toward the leg or foot acupoints. The protrusion is provided with a drug that acts on the acupoints corresponding to the protrusion, which is used to release the drug to act on the acupoints, so that the orthosis 1 has the functions of correction and treatment.

[0030] Functional imaging data included functional magnetic resonance imaging, diffusion tensor imaging, and positron emission tomography of the leg / foot topography.

[0031] The orthosis 1 comprises a U-shaped semi-enclosed fixing sleeve for the calf and a U-shaped semi-enclosed fixing sleeve for the ankle, and the U-shaped semi-enclosed fixing sleeve for the calf and the ankle are integrally formed and used for orthopedics of the calf and foot. At the same time, straps 7 are added at the ankle and calf for fixation.

[0032] The orthosis is also provided with ventilation holes 6 for increasing the ventilation and heat dissipation effect on the calf and ankle, thereby increasing the comfort of the wearer; and for reducing the weight of the orthosis, making it easier to move around, while also increasing the comfort of wearing; and also reducing the situation of blood stagnation, thereby ensuring normal blood circulation in the soft tissues around the knee joint and the body parts below.

[0033] Through holes 3 are respectively provided at both ends of the protrusion, which are used for the medicine to enter the protrusion through the through hole 3 located on the outside of the orthosis, and go out from the through hole 3 located on the inside of the orthosis to act on the acupuncture points.

[0034] The protrusion includes an attachment layer 5 and a protruding drug-carrying layer 4. The back side of the attachment layer 5 is bonded to the orthosis 1. The top of the attachment layer 5 is plugged into the protruding drug-carrying layer 4 (that is, the attachment layer 5 is a rubber plug, and the top of the attachment layer 5 plugs the protruding drug-carrying layer 4) to control the replacement of the drug. A film that seals the through hole 3 is provided on the top of the protruding drug-carrying layer 4 to tear the film so that the drug can pass through and act on the acupuncture points of the human body.

[0035] The height of the protrusion is 1-1.5 cm, and the diameter of the protrusion is 3 cm.

[0036] The material of the orthosis 1 is any one or more of polylactide (PLA), PVC plastic, ABS plastic, carbon fiber composite material, polypropylene, polyethylene, acrylic resin, silicone resin, and acryl resin.

[0037] It should be noted that the 3D printed orthosis can be printed using existing technology, such as the following steps:

[0038] S1, scan the patient's lower limbs to obtain a three-dimensional digital image, output it in DICOM format, and use MIMICS to reconstruct a three-dimensional model;

[0039] S2, reconstructing the three-dimensional model of the acupoint protrusion, taking into account the protrusion stimulation intensity and the patient's gender, height, weight and other factors, calculating the height and diameter of different protrusion stimulators 2, while ensuring that the orthosis 1 fits the position of the acupoint protrusion, adjusting and establishing the three-dimensional model of the orthosis 1;

[0040] S3. Print out the orthosis body according to the three-dimensional model of the orthosis 1 using 3D printing technology.

[0041] In S3, the 3D printing technology used includes any one of melt extrusion printing and light-curing printing.

[0042] The utility model has the following advantages:

[0043] 1. The orthotic standard can be adjusted according to the user's leg shape and lower limb biomechanical abnormalities, and the acupoints can be located according to the patient's lower limb data to achieve precise customization.

[0044] 2. 3D printing is adopted, which is simple to make, easy to wear, light and comfortable, and increases user compliance. At the same time, it also meets the patient's demand for personalized knee orthosis, with stable structure and reasonable design, which does not affect the normal activities of the knee joint, has good orthopedic effect and is conducive to rehabilitation treatment.

[0045] 3. Based on the knee orthosis, the utility model adds protrusions suitable for different types of diseases or protrusions with acupoint combined drug effects according to the treatment goals. It can perform combined treatment through acupoint stimulation and drug sustained release while providing correction, support and protection. At the same time, the adhesion of the attachment layer can facilitate the removal of the protrusion from the orthosis, and timely replace the expired drug in the drug-carrying layer.

[0046] 4. The utility model can not only correct the abnormal biomechanical structure of the lower limbs, but also the combined effect of the protrusions and the medicine can have a therapeutic effect on the legs or feet, thereby realizing that the orthosis can have orthopedic and therapeutic functions other than orthopedic.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional knee joint orthosis based on 3D printing, wherein the orthosis is 3D printed according to the user's leg / foot shape and the location of leg or foot acupuncture points selected by traditional Chinese medicine, as well as functional imaging data, and characterized in that: The orthosis is provided with protrusions matching the acupuncture points of the legs or feet, and the protrusions extend from the orthosis toward the acupuncture points of the legs or feet. The protrusions are provided with drugs that act on the acupuncture points corresponding to the protrusions, and are used to release the drugs to act on the acupuncture points, so that the orthosis has the functions of correction and treatment.

2. The multifunctional knee orthosis based on 3D printing according to claim 1, characterized in that: The orthosis comprises a U-shaped semi-enclosed fixing sleeve for the calf and a U-shaped semi-enclosed fixing sleeve for the ankle, and the U-shaped semi-enclosed fixing sleeve for the calf and the ankle are integrally formed and used for orthopedics of the calf and the foot. The orthosis is also provided with straps for fixing at the ankle and the calf.

3. The multifunctional knee orthosis based on 3D printing according to claim 1, characterized in that: The orthosis is also provided with ventilation holes to increase the ventilation and heat dissipation effect of the calf and ankle, thereby increasing the comfort of the wearer; and to reduce the weight of the orthosis, making it easier to move around, while also increasing the comfort of wearing; and also reducing the occurrence of blood stagnation, thereby ensuring normal blood circulation in the soft tissues around the knee joint and the body parts below.

4. The multifunctional knee orthosis based on 3D printing according to claim 1, characterized in that: Through holes are respectively arranged at both ends of the protrusion, so that the medicine can enter the protrusion through the through holes located on the outside of the orthosis, and go out from the through holes located on the inside of the orthosis to act on the acupuncture points.

5. The multifunctional knee orthosis based on 3D printing according to claim 4, characterized in that: The protrusion includes an attachment layer and a protrusion drug-carrying layer. The back side of the attachment layer is bonded to the orthosis. The top of the attachment layer is plugged into the protrusion drug-carrying layer to control the replacement of the drug. A film for sealing the through hole is provided on the top of the protrusion drug-carrying layer to tear the film so that the drug can pass through and act on the acupuncture points of the human body.

Images