3D printing preparation method of joint protector for pet dog

Abstract

The invention relates to the technical field of medical instruments, and discloses a 3D printing preparation method of a joint protector for a pet dog, comprising the following steps: S1, data measurement: measuring size data of thigh circumference, knee joint circumference, shank circumference, foot circumference, thigh length, shank length and foot length of a pet; s2, 3D modeling: analyzing the measurement size data, and establishing a preliminary three-dimensional model of a joint protector based on the information of the joint part of the affected dog; s3, directional design: according to joint characteristics, adding design allowing joint movement, and establishing a final three-dimensional model; and S4, output printing is conducted, specifically, the three-dimensional model is input into 3D printing equipment, and the finished joint protector is obtained through integrated printing. Through diversified data acquisition modes and in combination with the 3D software modeling technology, the shape of the protector can be accurately matched with the leg shape of the pet dog, so that the optimal fixing effect is achieved, the requirements of different users are met, remote mold taking for protector manufacturing is supported, and the manufacturing flexibility is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a 3D printing preparation method of a joint protector for a pet dog. Background Art

[0002] With the development of the economy and society, heavy work continues to squeeze the lives of modern people, and more residents in first-tier cities choose to keep pets to relieve stress and loneliness. According to the 2021 China Pet Consumption Trend Research Report, among many types of pets, pet dogs account for a high proportion, among which large dogs represented by Huskies and Golden Retrievers have become the mainstream of pet dogs.

[0003] Joint disease caused by cruciate ligament rupture in dogs is one of the common diseases in pet dogs. It is manifested as changes in sitting posture, hind limb lameness, hind limb muscle atrophy, active knee pain, knee swelling, reduced activity, difficulty standing up after sitting, reduced hind limb weight bearing, unwillingness to play, and hind limb stiffness. Among the affected dogs, large dogs such as golden retrievers are more susceptible to such diseases due to their large size and heavy weight, and the greater pressure on the joints. The gold standard for effective treatment of such diseases is TPLO surgery, which can reconstruct knee joint stability and restore lower limb mobility. However, for elderly dogs and dogs with underlying diseases, the risk of surgical anesthesia is high, and alternative treatment options other than surgery need to be sought. Immobilization and fixation of the affected limb by external fixation braces is an effective conservative treatment for cruciate ligament injury. In addition, for canine orthopedic surgery such as TPLO surgery for ligament injury and internal fixation for fracture, in order to achieve good rehabilitation effects after surgery, strenuous activities of the affected dog should be avoided. However, in reality, the intensity of postoperative activities of the affected dog is difficult to control artificially, which may cause re-damage to the surgical site. Orthopedic external fixation braces, such as plaster bandages and thermoplastic splints, are effective methods to enhance the stability of the surgical site. However, they still have shortcomings such as insufficient fit to the surgical site and not being light enough.

[0004] After searching, the publication number is CN106214307A, which discloses a 3D printing preparation method for an orthopedic external fixation brace, which includes the following steps: 1) obtaining information on the orthopedic part of the patient's limb; 2) establishing a preliminary three-dimensional model of the orthopedic external fixation brace based on the orthopedic part information; 3) establishing a physical constitutive model of the orthopedic external fixation brace, and using the finite element method for biomechanical analysis; 4) updating the preliminary three-dimensional model data of the orthopedic external fixation brace based on the biomechanical analysis; 5) designing the final three-dimensional model of the orthopedic external fixation brace based on the updated three-dimensional model data of the orthopedic external fixation brace, inputting the final three-dimensional model data into the 3D printing system, and printing and molding the orthopedic external fixation brace in one piece. The technical problems of low fit between the external fixation brace and the limb orthopedic part, easy soft tissue damage, insufficient antibacterial property, long customization time and high cost in the prior art are solved. In this application, it is a technical solution implemented as human orthopedics. However, there is no report on 3D printed braces for joint injuries in pet dogs. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a 3D printing preparation method for joint protectors for pet dogs, which solves the problem of a single data acquisition channel and the inability to accurately match the legs of pet dogs.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A 3D printing preparation method of a joint protector for a pet dog, comprising the following steps: S1. Data measurement: measure the pet's thigh circumference, knee circumference, calf circumference, foot circumference, thigh length, calf length and foot length; S2, 3D modeling: Analyze the measured size data and build a preliminary three-dimensional model of the joint protector based on the information of the joint parts of the affected dog; S3, directional design: according to the characteristics of the joints, add designs that allow joint movement and establish the final three-dimensional model; S4. Output printing: Input the three-dimensional model into the 3D printing device and print the finished joint protector in one piece.

[0007] Preferably, in step S1, the measurement is performed using 3D scanning software or manual measurement.

[0008] Preferably, in step S2, the three-dimensional model includes a supporting force part, a joint movable device and a hollow structure.

[0009] Preferably, in step S3, the design of the joint movement includes designing a bilateral base component at the position of the joint line for mounting elastic rods, thereby stabilizing the protective gear and increasing the mobility of the protective gear.

[0010] Preferably, in step S3, the design of the joint movement also includes a groove in front of the joint to ensure the mobility of the patella during the wearing of the protective gear.

[0011] Preferably, in step S4, the 3D printing device is a fused lamination printer.

[0012] Preferably, in step S4, the printing material of the 3D printing device includes one or more of thermoplastic plastics, carbon fiber reinforced plastics and rubber.

[0013] Preferably, in step S4, the finished joint protector is suitable for use as an auxiliary device after pet joint ligament injuries, and the ligament injury sites to which the finished joint protector is applicable include but are not limited to the knee joint, ankle joint, elbow joint and wrist joint.

[0014] The present invention provides a 3D printing method for preparing joint protectors for pet dogs. The method has the following beneficial effects: 1. The present invention supports the use of 3D scanning software to obtain information on the joints of pet dogs and is compatible with manual measurement methods, thereby expanding the channels for obtaining 3D modeling data. With diversified data acquisition methods combined with 3D software modeling technology, the shape of the protective gear can be accurately matched to the leg shape of the pet dog, thereby achieving the best fixation effect and adapting to the needs of different users. It also supports remote mold taking and production of protective gear, thereby improving production flexibility.

[0015] 2. The present invention designs bilateral base components in the 3D model of the protective gear to install elastic rods and opens a groove in front of the joint, thereby ensuring the mobility of the protective gear and the patella joint, so that the pet dog can still maintain a certain range of motion when wearing the protective gear, thereby enhancing the functionality and use effect of the protective gear.

[0016] 3. The present invention reduces the weight of the protective gear by adopting a lightweight plastic material and a hollow structure, thereby enhancing the comfort of the pet dog when wearing it. At the same time, the hollow design improves the breathability of the protective gear, avoiding discomfort or stuffiness caused by long-term wearing, and further improving the use experience of the pet dog. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of the method steps of the present invention; Figure 2 It is a schematic diagram of the joint size data of the present invention; Figure 3 A schematic diagram of a 3D modeling of a knee joint brace of the present invention; Figure 4 It is a schematic diagram of 3D modeling of the elbow joint protector of the present invention; Figure 5 It is a schematic diagram of the protrusion for installing the elastic rod and the front window of the joint of the present invention; Figure 6 It is a schematic diagram of the self-adhesive elastic rod of the present invention; Figure 7 A schematic diagram of a dog wearing a knee joint protector according to the present invention; Figure 8 It is a schematic diagram of a dog wearing the elbow joint protector of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: Please refer to the attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a 3D printing method for preparing a joint protector for a pet dog, comprising the following steps: S1. Data measurement: measure the pet's thigh circumference, knee circumference, calf circumference, foot circumference, thigh length, calf length and foot length; S2, 3D modeling: Analyze the measured size data and build a preliminary three-dimensional model of the joint protector based on the information of the joint parts of the affected dog; S3, directional design: according to the characteristics of the joints, add designs that allow joint movement and establish the final three-dimensional model; S4, output printing: input the three-dimensional model into the 3D printing device, and print the finished joint protector in one piece; In step S1, measurement is performed using 3D scanning software or manual measurement. In step S2, the three-dimensional model includes a supporting part, a joint movement device and a hollow structure. In step S3, the design of the joint movement includes designing bilateral base components at the joint line position for installing elastic rods to increase the mobility of the protective gear while stabilizing the protective gear. In step S3, the design of the joint movement also includes grooving in front of the joint to ensure the mobility of the patella during the wearing of the protective gear. In step S4, the 3D printing equipment uses a fused lamination printer. In step S4, the printing material of the 3D printing equipment includes one or more of thermoplastics, carbon fiber reinforced plastics and rubber. In step S4, the finished joint protector is suitable for auxiliary equipment after pet joint ligament injuries. The ligament injury sites suitable for the finished joint protector include but are not limited to the knee joint, ankle joint, elbow joint and wrist joint.

[0020] Specifically, in step S1, 3D scanning software or manual measurement tools are used to obtain the size data of the pet dog's thigh circumference, knee circumference, calf circumference, foot circumference, thigh length, calf length and foot length. In this way, through detailed size measurements, the protective gear is ensured to be accurately matched with the pet dog's limbs to provide the best support effect. 3D scanning technology can quickly and accurately obtain three-dimensional data, while manual measurement is suitable for situations where there is no scanning equipment. Ultimately, through precise measurement data, the subsequent 3D model construction can be more closely fitted to the pet's joint shape, thereby improving the comfort and functionality of the protective gear; in step S2, from After obtaining the size data in step S1, a preliminary three-dimensional model of the protective gear is constructed using 3D modeling software based on the specific morphology of the pet dog's joints and the information on the injured parts. The model includes supporting parts, joint activity devices and hollow structures. This preliminary 3D model not only takes into account the effective support for the joints, but also improves the breathability and comfort of the protective gear by adding hollow designs, reduces the stuffiness and discomfort during wearing, and the supporting parts are specifically designed for the support needs of the dog's joints after injury, ensuring the stability of the protective gear on the joints. In step S3, according to the joint characteristics of the pet dog, further The first step is to optimize the design of the protective gear, especially to carry out specific structural design at the joint activity position. The bilateral base parts of the protective gear are used to install elastic rods to improve the flexibility of the joint protective gear. A slotted structure is designed in front of the joint to ensure that the freedom of movement of the patella is not affected when it is worn. In this way, by reserving space for joint movement, the protective gear can not only stably support the joint, but also allow moderate mobility, thereby helping to restore joint function. The design of the bilateral base ensures that while the protective gear stabilizes the joint, it increases elasticity and avoids restricting the natural movement of the joint. It is particularly suitable for pet dogs that need rehabilitation. In step S4, the optimized three-dimensional model is input into a 3D printing device. The 3D printing device uses a fused lamination printer and selects materials such as thermoplastic plastics, carbon fiber reinforced plastics or rubber for printing. Different materials are used for printing according to the specific requirements of the protective gear to ensure that different parts have appropriate hardness and softness. In this way, through 3D printing technology, the protective gear can be formed in one piece to ensure high dimensional accuracy and good fit with the joints of the affected dog. The selection of materials is based on the different needs of the joints to provide a flexible, sturdy and comfortable wearing experience, which can maintain good durability and wearing comfort during use.

[0021] Embodiment 2: Please refer to the attached Figure 3 , Attachment Figure 5 , Attachment Figure 6 and attached Figure 7 ,Specific plan: Based on the collected data of the dog's knee joint, a 3D modeling diagram was constructed, in which bilateral base components and a slot design in front of the joint were added; The printing material used in this embodiment is polylactic acid, and the filling density of the physical structure in different parts is adjusted; The joint protector in this embodiment is completed by 3D printing, the polylactic acid printing temperature is 210°C, the printing speed is 30mm / s, and the nozzle diameter is 0.2mm; The 3D printed knee brace is as shown in the attached Figure 5 As shown in the figure, it includes a double-sided base part (top box) and a slot in front of the joint (bottom box); at the same time, a self-adhesive elastic rod is made according to the joint position information, as shown in the attached Figure 6 As shown in the figure, then, the self-adhesive elastic rod is installed on the joint protector to obtain a complete set of joint protectors. Finally, the complete set of protectors is installed on the hind limbs of the affected dog, as shown in the figure. Figure 7 As shown. The dog can stand normally.

[0022] Embodiment three: Please see attached Figure 4 and attached Figure 8 ,Specific scheme: A 3D modeling diagram constructed based on the elbow joint data of the affected dog, in which a bilateral base component and a slot design in front of the joint are added; The printing material used in this embodiment is poly(lactide-glycol) and the filling density of the entity structure in different parts is adjusted; The joint protector in this embodiment is completed by 3D printing, the polylactic acid printing temperature is 200°C, the printing speed is 25mm / s, and the nozzle diameter is 0.26mm; At the same time, a self-adhesive elastic rod is made according to the joint position information and installed on the joint protector, and finally worn on the elbow joint of the affected dog, as shown in the attached Figure 8 As shown, the dog can stand normally wearing the elbow brace.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printing method for preparing a joint protector for a pet dog, characterized in that: The following steps are involved: S1. Data measurement: measure the pet's thigh circumference, knee circumference, calf circumference, foot circumference, thigh length, calf length and foot length; S2, 3D modeling: Analyze the measured size data and build a preliminary three-dimensional model of the joint protector based on the information of the joint parts of the affected dog; S3, directional design: according to the characteristics of the joints, add designs that allow joint movement and establish the final three-dimensional model; S4. Output printing: Input the three-dimensional model into the 3D printing device and print the finished joint protector in one piece.

2. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S1, the measurement is performed using 3D scanning software or manual measurement.

3. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S2, the three-dimensional model includes a supporting force part, a joint movable device and a hollow structure.

4. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S3, the design of the joint movement includes designing bilateral base components at the joint line position for mounting elastic rods, thereby stabilizing the protective gear and increasing the mobility of the protective gear.

5. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S3, the design of the joint movement also includes opening a groove in front of the joint to ensure the mobility of the patella during the wearing of the protective gear.

6. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S4, the 3D printing device is a fused lamination printer.

7. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S4, the printing material of the 3D printing device includes one or more of thermoplastic plastics, carbon fiber reinforced plastics and rubber.

8. The 3D printing preparation method of a joint protector for a pet dog according to claim 1, characterized in that: In step S4, the finished joint protector is suitable for use as an auxiliary device for pets after joint ligament injuries. The ligament injury sites to which the finished joint protector is suitable include but are not limited to the knee joint, ankle joint, elbow joint and wrist joint.

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