Detachable orthopedic forearm photocuring brace and preparation method thereof

Abstract

The invention discloses a detachable orthopedic forearm photocuring brace and a preparation method thereof.The brace comprises a silica gel brace shell with ductility, photosensitive resin is filled in the brace shell, and the brace shell can be tightly attached to the forearm treatment part of a patient; the bendable channel is arranged in the middle of the brace shell and made of silica gel with the hardness of 40-60 D, connection stability is guaranteed, the channel is endowed with the bending function, and the requirements of different moving postures of the forearm of a patient and disassembly and dressing change are met. During use, the photosensitive resin is cured from a liquid state to a solid state through irradiation of a specific light source, so that the fracture part of the forearm is firmly fixed, the stability of the fracture part is effectively maintained, and secondary injury is prevented. The device is reasonable in structural design, has the advantages of being high in fixing stability, comfortable and convenient to wear, high in adaptability, flexible to use and the like, is suitable for treatment of distal radius non-displacement stable fracture and carpal fracture, can remarkably improve patient treatment experience and clinical treatment effect, and has high clinical popularization value.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of orthopedic medical auxiliary instruments, and particularly relates to a detachable forearm light-curing brace for orthopedics and a preparation method thereof. BACKGROUND

[0002] In the field of orthopedic clinical treatment, forearm fracture conditions such as stable distal radius fracture, carpal bone fracture (except for scaphoid fracture) are relatively common. Although such fractures do not require open reduction surgery, there are strict requirements for fixation stability and comfort and safety during treatment. At present, the fixation methods for such fractures in clinical practice mainly rely on traditional plaster braces, ordinary polymer braces and conventional braces. However, these existing technologies have many defects that are difficult to overcome in actual application, and cannot fully meet the clinical treatment needs and patient use experience. Traditional plaster braces can achieve a certain fixing effect, but have obvious limitations. First, the plaster material has high hardness and lacks ductility, making it difficult to accurately adapt to the limb morphology of different individuals when fitting the patient's forearm contour. This can cause local compression to be too tight or the fixation to be loose, affecting the patient's wearing comfort, and may also cause poor local blood circulation due to compression, increasing the risk of complications. Second, the shape of the plaster brace is fixed after solidification, and cannot be adjusted according to the patient's limb swelling and other conditions during treatment. If replacement or adjustment is required, the entire brace must be removed and reinstalled, which is cumbersome and increases the patient's treatment cost. Third, the plaster brace is not waterproof, so the patient cannot properly clean the affected limb during treatment, greatly affecting the convenience of daily life. Although ordinary polymer braces have improved weight and waterproofness compared to plaster braces, they still have insufficient fixation stability. Such braces often use preformed structures, making it difficult to achieve close fitting with the patient's forearm. During daily activities, the brace can easily shift, causing the fracture site to lose effective support and increasing the risk of secondary injury. In addition, the material has poor breathability, and long-term wear can cause skin discomfort, sweating and other discomfort, and may even induce skin inflammation. Although conventional silicone braces have certain ductility and comfort, they lack effective built-in connection systems in their structural design, making it difficult to quickly and accurately fix them to the treatment site during wear. The operation convenience is not good. In addition, the material has low hardness, and cannot provide sufficient support strength to the fracture site, so it needs to be used with other reinforcing structures, increasing the overall complexity and cost of the brace. Furthermore, most existing silicone braces do not have a bendable function, and cannot adapt to the activity needs of the patient's forearm in different postures, limiting the patient's daily activity range and affecting the quality of life during treatment. Based on the above-mentioned defects of the existing technology, there is an urgent need in clinical practice for a forearm brace for orthopedics that has strong fixation stability, is comfortable and convenient to wear, has high adaptability, and can meet certain activity needs of the patient. SUMMARY

[0003] To address the aforementioned issues, this invention provides a detachable orthopedic forearm photocuring brace and its preparation method. Through innovative structural design combined with photocuring technology, it effectively solves the shortcomings of traditional braces in terms of fixation effect, comfort, ease of operation, and adaptability, providing a superior solution for non-surgical treatment of orthopedic forearm fractures.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a detachable orthopedic forearm photocurable brace, comprising a silicone brace shell, the shell having a hollow structure with an vent at the upper end and an injection port at the lower end, the shell being filled with photosensitive resin, a bendable channel in the middle of the shell being made of 40-60D silicone, a thumb fixing hole on the shell, and connecting parts on the edge of the shell.

[0005] The support shell is formed by connecting the upper and lower support parts into one piece through a vulcanization process, creating a hollow structure with two parts on the left and right sides.

[0006] The injection port and the vent are both conical structures, and there are two of each, located on both sides of the bendable channel.

[0007] The support shell is 280mm long, 230mm wide, and 13mm high, with a cavity thickness of 1mm, an elongation of 30%, and a photosensitive resin filling amount of 150g.

[0008] The connector is a zipper.

[0009] The support casing has several scale-shaped exhaust and cleaning holes.

[0010] The back of the support casing is covered with foam of the same shape.

[0011] The photosensitive resin is model GZ-UV-01.

[0012] This invention also provides a method for preparing a detachable orthopedic forearm photocurable brace, comprising the following steps: 1. Raw material preparation Weigh component A and component B of liquid silica gel at a mass ratio of 1:1±5%, and mix the two components of liquid silica gel thoroughly. 2. Upper support forming The mixed A and B two-component liquid silicone is injected into the mold cavity of the upper support. After mold closing, 80-120 kg / m³ is applied. 3 The pressure is maintained at 150℃-160℃ for 3 minutes to complete the initial forming of the upper support. 3. Lower part brace pre-treatment Pour the mixed A, B two-component liquid silicone into the mold cavity of the lower part brace, and then install the connecting piece; 4. Lower part brace vulcanization Place the upper part brace shaped in step 2 in the mold of the lower part brace stably, so that the upper and lower part braces are precisely docked; move the assembled mold of the upper and lower part braces into the tunnel furnace, and perform vulcanization treatment at an environment of 130-150 DEG C, with a vulcanization time of 30 minutes; 5. Cooling and obtaining of finished product After the vulcanization process is completed, take the mold out of the tunnel furnace and immediately immerse it in water for cooling; after cooling to room temperature, open the mold to obtain the brace shell; 6. Glue filling operation: connect and fix the exhaust hole on the brace shell with the exhaust device, and insert the glue injection needle of the glue filling machine into the glue injection hole on the brace shell; set the parameters in the glue filling machine control system: glue filling speed 10g / 5s; start the glue filling program, pull out the glue injection needle after the photosensitive resin is filled, and a detachable orthopedic forearm photocuring brace is obtained.

[0013] The types of the A, B component liquid silicones are 8720-20A and 8720-20B respectively.

[0014] Compared with the prior art, the present application has the following beneficial effects: The detachable orthopedic forearm photocuring brace provided by the present application is provided with a bendable channel in the middle part of the brace, the channel is made of silicone with a hardness of 40-60D, which not only ensures the connection stability of the left and right parts of the brace, but also endows the brace with the bending function, so that the brace can adapt to different activity postures of the patient's forearm and the needs of disassembly and dressing change. The internal cavities of the left and right parts of the brace are filled with photosensitive resin, and when the brace is used, the photosensitive resin inside is solidified from liquid to solid by irradiation of a specific light source after the brace is fixed on the treatment site, so that the forearm fracture site is firmly fixed, the stability of the fracture site is effectively maintained, and secondary injury is prevented, which is suitable for the treatment of distal radius non-displacement stable fracture and carpal bone fracture (except for scaphoid fracture).

[0015] The detachable orthopedic forearm photocuring brace provided by the present application has a reasonable structure design, and has the advantages of strong fixing stability, comfortable and convenient wearing, high adaptability and flexible use, etc. Through the combination of innovative structure design and photocuring technology, the deficiencies of traditional braces in fixing effect, comfort, operation convenience and adaptability are effectively solved, the treatment experience and clinical treatment effect of the patient can be significantly improved, a more high-quality solution is provided for the non-surgical treatment of orthopedic forearm fracture, and the detachable orthopedic forearm photocuring brace has high clinical popularization value.

[0016] The preparation method of the detachable orthopedic forearm light-cured brace provided by the application combines step-by-step forming of the upper and lower braces with overall vulcanization, ensures the connection strength of the upper and lower braces and the overall size accuracy, and ensures the stability of product performance through precise parameter control. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 2 is a top view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 3 is a bottom view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 4 is a side view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 5 is a perspective view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 6 is a schematic view of the upper brace of the detachable orthopedic forearm light-cured brace provided by the application; Figure 7 is a schematic view of the lower brace of the detachable orthopedic forearm light-cured brace provided by the application; Figure 8 is a real object view of the detachable orthopedic forearm light-cured brace provided by the application; Figure 9 is a wearing effect view of the detachable orthopedic forearm light-cured brace provided by the application; In the figure: 1, brace shell; 2, thumb fixing hole; 3, bendable channel; 4, connecting piece; 5, exhaust port; 6, glue injection port; 7, foam; 8, exhaust cleaning hole; 9, upper brace; 10, lower brace. DETAILED DESCRIPTION

[0018] The application will be further described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1-9This invention provides a detachable orthopedic forearm photocurable brace, designed to address the problems of poor fixation stability, uncomfortable wear, inconvenient operation, and non-removability of existing forearm fracture fixation braces. The brace includes a brace shell 1, photosensitive resin, foam 7, and connectors 4. The brace shell 1 is made of stretchable silicone material, allowing it to closely conform to the patient's forearm treatment area. The brace shell 1 is formed by connecting an upper part 9 and a lower part 10 together through a vulcanization process, creating a two-part hollow structure filled with photosensitive resin. A bendable channel 3 is located in the middle of the brace shell 1. This bendable channel is solid, made of 40-60D silicone, and designed with a width groove that balances bendability and stability, ensuring connection stability while providing bending functionality to accommodate different forearm movement postures and the needs of disassembly and dressing changes. The brace shell 1 is 280mm long, 230mm wide, and 13mm high, with a cavity thickness of 1mm and a stretch of 30%. The brace is filled with 150g of sensitive resin. The outer shell 1 has a thumb fixing hole 2 and a connector 4 on its edge, facilitating patient wearing, simplifying the wearing process, and improving comfort. The outer shell 1 also has several scale-shaped venting and cleaning holes 8 for cleaning skin surface metabolites during rehabilitation, further enhancing comfort. The lower end of the outer shell has injection ports on both sides, 6 with a conical design to prevent glue leakage when the injection needle is removed after injection. The upper end of the outer shell has vents 5 on both sides, with a conical design to allow the vent needle to enter the outer shell along a designated path. The back of the outer shell is covered with foam 7 of the same shape, further improving wearing comfort. The brace shell has a bendable channel in the middle. This channel is made of silicone with a hardness of 40-60D and is connected to the silicone during the silicone curing process of the brace shell. This gives the brace shell bendability and ensures the connection stability between the left and right parts of the brace shell. With the help of the connector (preferably a zipper), it can be worn by zipping when fixed in the rehabilitation position, which can simplify the wearing operation and improve the wearing comfort.

[0020] The photosensitive resin is filled inside the brace shell. The photosensitive resin with model number GZ-UV-01 is selected. Before use, it is in a liquid state. After the brace is worn and installed, it is irradiated with a specific light source, and the photosensitive resin changes from a liquid state to a solid state. It can firmly fix the fracture site of the forearm, effectively maintain the stability of the fracture site, and prevent secondary injury.

[0021] The manufacturing process of the detachable orthopedic forearm photocurable brace provided by this invention includes the following steps: 1. Raw material preparation Weigh component A liquid silica gel 8720-20A and component B liquid silica gel 8720-20B precisely at a mass ratio of 1:1±5%, and mix the two components A and B thoroughly. 2. Upper support forming The mixed A and B two-component liquid silicone is injected into the mold cavity of the upper support. After mold closing, 80-120 kg / m³ is applied. 3 The pressure is maintained at 150℃-160℃ for 3 minutes to complete the initial forming of the upper support. 3. Pre-treatment of the lower support The mixed A and B two-component liquid silicone is injected into the mold cavity of the lower support. Then, the connector is installed on the special tooling according to the preset positioning requirements to ensure that the positional accuracy of the connector meets the design standards. 4. Vulcanization of the lower support Place the upper support formed in step 2 into the mold of the lower support according to the tooling positioning requirements, so that the upper and lower supports are precisely connected; transfer the mold with the upper and lower supports assembled into the tunnel furnace and vulcanize it at 130℃-150℃ for 30 minutes. 5. Cooling and Finished Product Acquisition After the vulcanization process is completed, the mold is removed from the tunnel furnace and immediately immersed in water for cooling; after cooling to room temperature, the mold is opened and the outer shell of the detachable orthopedic forearm light-cured brace is removed. Glue application procedure: Connect and fix the vent hole on the brace housing to the dedicated venting device, insert the glue injection needle of the glue application machine into the glue injection hole on the brace housing; set the parameters in the glue application machine control system: glue application volume 150g, glue application speed 10g / 5s; start the glue application program, and after completing the preset amount of UV glue application, pull out the glue injection needle to complete the preparation of the detachable orthopedic forearm light-cured brace.

[0022] Foaming: Foam is attached to the back of the brace.

[0023] This process combines step-by-step molding with overall vulcanization to ensure the connection strength and overall dimensional accuracy of the upper and lower parts of the support, while precise parameter control ensures the stability of product performance.

[0024] The above is a further detailed description of the present invention in conjunction with specific embodiments. It should not be considered that the specific implementation of the present invention is limited to this. For those skilled in the art to which the present invention pertains and related fields, any extensions, operation methods, and data substitutions made based on the technical solution concept of the present invention should fall within the protection scope of the present invention.

Claims

1. A detachable orthopedic forearm light-cured brace, characterized in that: The brace shell (1) is a hollow structure, the upper end of which is provided with an exhaust port (5), and the lower end is provided with a glue injection port (6), the brace shell (1) is filled with photosensitive resin, the middle of the brace shell (1) is provided with a bendable channel (3), the bendable channel (3) is made of 40-60D silica gel, the brace shell (1) is provided with a thumb fixing hole (2) on the upper end, and the edge of the brace shell (1) is provided with a connecting piece (4).

2. The detachable orthopedic forearm light-cured brace of claim 1, wherein: The brace shell (1) is connected into one by vulcanization process of the upper brace (9) and the lower brace (10), forming left and right two-part cavity structure.

3. The detachable orthopedic forearm light-cured brace of claim 2, wherein: The glue injection port (6) and the exhaust port (5) are conical structures, and the number of each is two, which are located on both sides of the bendable channel (3).

4. The detachable orthotic forearm light-cured brace according to any one of claims 1-3, wherein: The brace shell (1) is 280mm long, 230mm wide, and 13mm high, the cavity thickness is 1mm, the ductility is 30%, and the photosensitive resin filling amount is 150g.

5. The detachable orthotic forearm light-cured brace according to any one of claims 1-3, wherein: The connecting piece (4) is a zipper.

6. The detachable orthotic forearm light-cured brace according to any one of claims 1-3, wherein: The brace shell (1) is provided with a plurality of scale-shaped exhaust cleaning holes (8) on the upper end.

7. The detachable forearm light-cured brace of any one of claims 1-3, wherein: The brace shell (1) is pasted with a foam (7) which is consistent with the shape of the brace shell (1) on the back.

8. The detachable orthotic forearm light-cured brace according to any one of claims 1-3, wherein: The model of the photosensitive resin is GZ-UV-01.

9. The preparation method of the detachable forearm light-cured brace of claim 1-8, comprising the following steps:

1. Raw material preparation A component liquid silicone and B component liquid silicone are weighed according to the mass ratio of 1:1±5%, and the two components of liquid silicone are mixed uniformly; 2. Upper brace forming After mixing, the two-component liquid silica gel A and B is injected into the mold cavity of the upper brace, and after closing the mold, 80-120 kg / m 3 of pressure is applied, and the preliminary forming of the upper brace is completed at 150-160 ℃ for 3 minutes; 3. Lower brace pretreatment Inject the mixed A and B components of liquid silicone into the mold cavity of the lower brace, and then install the connecting piece; 4. Lower brace vulcanization Place the upper brace formed in step 2 in the mold of the lower brace stably to make the upper and lower braces accurately docked; move the assembled mold of the upper and lower braces into the tunnel furnace, and perform vulcanization treatment at 130-150℃ for 30 minutes; 5. Cooling and product acquisition After the vulcanization process is completed, take the mold out of the tunnel furnace and immediately immerse it in water for cooling; after cooling to room temperature, open the mold to obtain the brace shell; 6. Glue filling operation: connect and fix the exhaust port on the brace shell with the exhaust device, and insert the glue injection needle of the glue filling machine into the glue injection hole on the brace shell; set the parameters in the glue filling machine control system: glue filling speed 10g / 5s; start the glue filling program, pull out the glue injection needle after the photosensitive resin is filled, and the detachable forearm light-cured brace is obtained.

10. The method of claim 9, wherein: The models of the A and B components of liquid silicone are 8720-20A and 8720-20B respectively.

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