Finger fixing device

Abstract

The present application relates to the technical field of orthopedic medical devices and discloses a finger fixation device, comprising: four adjustment rods connected end to end to form an adjustment frame, with a first hinge rod rotatably connected between two adjacent adjustment rods; a shaping plate, with an adjustment slot formed on the side of the shaping plate facing away from the finger, the adjustment slot extending along the length of the shaping plate, wherein two first hinge rods located on the same straight line are slidably installed in the adjustment slot; a first fixing member for fixing the first hinge rod to the shaping plate; four shaping rods connected end to end to form a shaping frame, with a second hinge rod rotatably connected between two adjacent shaping rods, and two first hinge rods located outside the shaping plate respectively passing through a second hinge rod; a second fixing member for fixing the first hinge rod to the second hinge rod; and an elastic band, with one end fixedly installed on the shaping rod and the other end detachably connected to the adjustment rod. The present application can improve individualized adaptability.

Description

Technical Field

[0001] The present application relates to the technical field of orthopedic medical devices, and in particular to a finger fixation device. Background Art

[0002] Fingers are among the most delicate and frequently used bones in daily life, consisting of multiple phalanges and the joints between them. Due to their exposed location and relatively small and fragile structure, finger fractures (including phalangeal fractures and interphalangeal joint dislocations / injuries) are common injuries in clinical orthopedics and hand surgery, often resulting from sports trauma, accidental collisions, falls, or workplace accidents. Timely and effective fixation is crucial for treating finger fractures, promoting bone healing, restoring joint function, and preventing malunion.

[0003] Currently, common devices used for finger fracture fixation in clinical practice mainly include traditional plaster fixation, which can provide basic fixation but has poor air permeability; metal or plastic splint fixation, and pre-formed splints are difficult to precisely fit different patients; tape fixation (such as adjacent finger fixation) is simple to operate, but is only suitable for extremely mild and stable fractures, and its fixation strength is seriously insufficient.

[0004] Existing common devices need to improve their individual adaptation capabilities while providing stable and reliable fixation. Summary of the Invention

[0005] In order to improve the above problems, the present application provides a finger fixing device.

[0006] This application provides a finger fixing device, which adopts the following technical solution:

[0007] A finger fixing device comprising:

[0008] Four adjusting rods are connected end to end to form an adjusting frame, and a first hinge rod is rotatably connected between two adjacent adjusting rods;

[0009] A shaping plate is configured to contact the finger, wherein an adjustment slot is defined on a side of the shaping plate facing away from the finger, the adjustment slot extending along the length of the shaping plate, wherein two first hinged rods located on the same straight line are slidably mounted in the adjustment slot, and the other two first hinged rods are located outside the shaping plate;

[0010] a first fixing member, used for fixing the first hinged rod to the shaping plate;

[0011] Four shaping rods are connected end to end to form a shaping frame, and a second hinge rod is rotatably connected between two adjacent shaping rods, and two first hinge rods located outside the shaping plate respectively pass through one of the second hinge rods;

[0012] A second fixing member is used to fix the first hinge rod and the second hinge rod in connection;

[0013] An elastic band has one end fixedly mounted on the shaping rod and the other end detachably connected to the adjusting rod; a plurality of elastic bands are arranged at intervals along the length direction of each shaping rod.

[0014] By adopting the above technical solution, the adjusting frame itself can be deformed to form a diamond structure of different shapes. When the adjusting frame is installed on the shaping plate, when the two first hinge rods located in the same straight line on the adjusting frame approach each other, the two first hinge rods located outside the shaping plate move away from each other. If the shaping plate is installed on a finger, the two first hinge rods located outside the shaping plate are used to form contact with other adjacent fingers, thereby isolating the two fingers from each other. When the distance between the two first hinge rods located outside the shaping plate is appropriately reduced, it is convenient for the fingers to approach each other. The two adjusting rods located on the shaping plate move away from each other. The two adjusting rods are respectively close to the two end portions of the shaping plate, which can also better fix the shaping plate. In particular, when fixing multiple fingers, the distance between adjacent two fingers gradually increases along the length direction of the fingers. The two first hinge rods located outside the shaping plate are close to the middle position of the fingers, and the ends of the two fingers close to the palm can be closer to each other, thereby increasing the comfort of the entire hand.

[0015] When the shape of the adjustment frame is fixed, the two hinged rods outside the shaping plate pass through the second hinged rod respectively, so the shape of the shaping frame is also determined, and the shaping frame and the adjustment frame are also preliminarily fixed. Then the elastic ropes on the four shaping rods are installed on the corresponding adjustment rods. The fingers themselves have irregular shapes, and some elastic ropes are wrapped around the fingers and the shaping plate, so that the elastic ropes are bound to the fingers to varying degrees. A fixed relationship is formed between the adjustment frame, the shaping plate and the shaping frame, and the fractured fingers can be stably fixed, and the individual adaptation ability is improved. In the case of fractures of two adjacent fingers, after the finger fixing devices are installed on both fingers, the two fingers can be naturally close to each other, so that the fingers are in a more comfortable state for recovery.

[0016] Optionally, a reinforcement rod is provided between the two first hinge rods located outside the shaping plate.

[0017] By adopting the above technical solution, after the reinforcement rod passes through the two first hinge rods, the two first hinge rods cannot move closer to or farther away from each other.

[0018] Optionally, the reinforcement rods between two adjacent fingers are detachably connected.

[0019] By adopting the above technical solution, depending on the patient's finger fracture condition, if it is serious, the reinforcement rods between two adjacent fingers can be fixedly connected. After the two fingers are fixed separately, they are tied together to further improve the fixation effect of the fingers. After the condition improves, they can be separated.

[0020] Optionally, a wrist strap is further included, wherein the wrist strap is connected to a mounting rod, and the mounting rod passes through the first hinge rod and the reinforcement rod located in the shaping plate.

[0021] By adopting the above technical solution, the mounting rod passes through the first hinge rod and the reinforcement rod and is then fixed to the wristband, thereby further enhancing the fixing effect of the fingers.

[0022] Optionally, a reinforcement plate is further included, on which a clearance groove is provided for the shaping rod to pass through. The reinforcement plate and the shaping rod are detachably mounted, and the reinforcement plate is used to fit on the finger.

[0023] By adopting the above technical solution, after the reinforcement plate and the shaping frame are fixedly installed, the reinforcement plate fits on the finger, which can enhance the reinforcement effect on the finger. If the finger has reached the late stage of recovery and mainly plays a corrective effect, when the reinforcement plate is installed on the shaping frame, since the shaping plate and the first hinged rod are slidingly connected, and the shaping plate is fixed by the elastic band, the elastic band is pulled to slowly pull the shaping plate away from the finger along its own length direction. While the finger remains fixed, the fixed position is changed, and the position where the finger was originally squeezed and fixed by the shaping plate can be better breathable, thereby increasing the comfort of the finger.

[0024] Optionally, the second hinge rod connected to the first hinge rod is located outside the reinforcement plate, and the other two second hinge rods and the reinforcement plate are detachably fixedly connected.

[0025] Optionally, the reinforcement plate includes a fixed part and two sliding parts, the give way groove is located on the sliding part, the sliding part is slidably installed on the fixed part, the fixed part is provided with a long slot, the second hinged rod passes through the sliding part and the long slot, and the second hinged rod is threadedly connected with a nut.

[0026] By adopting the above technical solution, since the shape of the forming frame is adaptively changed according to the shape of the adjustment frame, the angle between the two forming rods is a variable. The sliding part is used to cooperate with the forming rod. The width of the makeshift groove on the sliding part can be appropriately reduced, but there is still a distance between the sliding part and the forming rod. The second hinged rod passes through the long slot and is threaded with a nut. After the entire forming frame is fixed, the sliding part is also fixed.

[0027] Optionally, the sliding portion is provided with an elastic pad in the clearance groove, and the elastic pad is in contact with the shaping rod.

[0028] By adopting the above technical solution, the shaping rod presses the elastic pad when it is in the yield groove, and the shaping rod and the sliding part form a preliminary fixed relationship.

[0029] In summary, this application has at least one of the following beneficial effects:

[0030] 1. The adjustment rod forms a deformable adjustment frame through a first hinged rod. When the first hinged rod, located within the adjustment slot of the shaping plate, slides, the adjustment frame changes shape (e.g., the width and narrowness of the diamond-shaped structure) to accommodate the thickness and length differences of different patients' fingers. For example, after the adjustment frame deforms, the first hinged rod, located outside the shaping plate, can adjust its position based on the distance between adjacent fingers, allowing the device to both isolate fingers and allow them to naturally approach, meeting the comfort requirements when multiple fingers are simultaneously fixed.

[0031] 2. The elastic bands arranged at intervals on the shaping rod are detachably connected to the adjustment rod, which can be used to bind the fingers to different degrees according to the irregular contours of the fingers. When the elastic bands are wrapped around the fingers and the shaping plate, they can adaptively wrap the fingers, avoiding the poor fit caused by traditional fixation devices (such as preformed splints) due to shape fixation. It is especially suitable for individualized fixation after finger fractures. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application installed on a finger;

[0033] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0034] Figure 3 It is a partial explosion diagram of an embodiment of the present application;

[0035] Figure 4 This is a schematic structural diagram of an embodiment of the present application in which a reinforcement rod is installed between two first hinged rods;

[0036] Figure 5 This is a schematic diagram of the overall structure of the embodiment of the present application, wherein the mounting rod and the wrist strap are fixedly connected;

[0037] Figure 6 This is a schematic diagram of the overall structure of the embodiment of the present application with a reinforcement plate added;

[0038] Figure 7 It is a partial half-section schematic diagram of an embodiment of the present application;

[0039] Figure 8 It is a schematic diagram of the local guarantee of the reinforcement plate of an embodiment of the present application.

[0040] Explanation of the accompanying drawings: 10. Adjusting rod; 11. First hinged rod; 12. Hanging hole; 20. Shaping plate; 21. Adjusting slot; 30. Shaping rod; 31. Second hinged rod; 40. Elastic band; 41. Hook; 50. First fixing member; 60. Second fixing member; 70. Reinforcement rod; 80. Wristband; 81. Fixing component; 82. Mounting rod; 90. Reinforcement plate; 91. Make way slot; 92. Fixing part; 93. Sliding part; 94. Long slot; 95. Slider; 96. Elastic pad. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Figure 8 This application is described in further detail.

[0042] An embodiment of the present application discloses a finger fixing device.

[0043] Reference Figure 1 A finger fixing device includes an adjusting rod 10, a shaping plate 20, a first fixing member 50, a shaping rod 30, a second fixing member 60 and an elastic band 40. There are four adjusting rods 10, which are connected by rotating the head and tail in sequence to form an approximately diamond-shaped adjustment frame. The first hinged rod 11 installed between two adjacent adjusting rods 10 is used to realize the rotation connection of the adjusting rod 10. Two limit blocks are fixed to one first hinged rod 11, and the two limit blocks are respectively embedded in one adjusting rod 10, so that the adjusting rod 10 can only rotate with respect to each other with the central axis of the first hinged rod 11 as the rotation center, but cannot move axially along the first hinged rod 11. The shaping plate 20 is used to directly fit the surface of the finger to be fixed, and the width of the shaping plate 20 is less than the maximum width of the finger.

[0044] Reference Figure 1 An arc-shaped groove is provided on one side of the shaping plate 20 to increase the contact area of ​​the shaping plate 20. On the side of the shaping plate 20 facing away from the fingers, an adjustment groove 21 is provided along the length direction of the shaping plate 20, and the adjustment groove 21 extends to both ends of the shaping plate 20. The cross-section of the adjustment groove 21 is a dovetail groove structure. When the adjustment frame is installed on the shaping plate 20, the two first hinged rods 11 located on the same straight line (usually corresponding to the long axis direction of the adjustment frame) can be slidably embedded in the adjustment groove 21 respectively. The ends of the two first hinged rods 11 in the long axis direction of the adjustment frame are connected to sliders 95 that are slidably connected to the adjustment groove 21. The two first hinged rods 11 located on the other two sides of the adjustment frame (usually corresponding to the short axis direction of the adjustment frame) are located outside the shaping plate 20, do not directly contact the shaping plate 20, and are longer.

[0045] Reference Figure 1 The function of the first fixing member 50 is to finally fix and lock the first hinged rod 11 slidably installed in the adjustment groove 21 on the shaping plate 20. The first fixing member 50 of the embodiment of the present application is a nut, which is threadedly connected to the first hinged rod 11. The nut is pressed against the adjustment rod 10, driving the adjustment rod 10 to press against the shaping plate 20, thereby determining the position of the adjustment frame relative to the shaping plate 20 and the fixed form of the shaping plate 20 itself.

[0046] Reference Figure 2 and Figure 3There are also four shaping rods 30, which are connected by rotating end to end to form another approximately diamond-shaped shaping frame. The shaping rods 30 are connected by a second hinge rod 31 installed between two adjacent shaping rods 30. The second hinge rod 31 also has limit blocks installed at both ends, which are embedded in the shaping rod 30, so that the two shaping rods 30 can only rotate relative to each other with the second hinge rod 31 as the rotation center.

[0047] Reference Figure 2 and Figure 3 The position of the shaping frame is linked to the adjustment frame: the two first hinged rods 11 located outside the shaping plate 20 each pass through a corresponding second hinged rod 31 on the shaping frame (usually corresponding to the short axis of the shaping frame). The first hinged rod 11 passes through the second hinged rod 31 and is coaxial with the second hinged rod 31. The second fixing member 60 is used to securely connect the first hinged rod 11 passing through the second hinged rod 31 to the second hinged rod 31, thereby locking the relative position of the adjustment frame and the shaping frame.

[0048] The second fixing member 60 is a bolt, and a threaded hole is provided at the end of the first hinged rod 11. When the bolt is threadedly connected to the first hinged rod 11, the nut is tightly pressed against the end of the second hinged rod 31. When the positions of the two ends of the short axis direction of the shaping frame are limited, the shaping frame is not easy to deform again.

[0049] Reference Figure 2 and Figure 3 The elastic band 40 is the primary fixing and restraining component. One end is fixedly connected to the shaping rod 30, and the other end is designed to be removably connected to the adjustment rod 10 (e.g., a hook 41, Velcro, or buckle). This embodiment of the application uses the hook 41. The adjustment rod 10 has a hanging hole 12, and the hook 41 is hooked to the hanging hole 12.

[0050] Reference Figure 1 and Figure 2 To improve the uniformity and adaptability of fixation, multiple elastic bands 40 are arranged at intervals along the length of each shaping rod 30. When the adjustment frame, shaping plate 20 and shaping frame are fixedly installed on the finger, part of the elastic band 40 passes around the shaping plate 20 or the finger and connects to the corresponding adjustment rod 10, providing adjustable and comfortable restraint.

[0051] During use, the user can first adjust the shape of the adjustment frame (change the width of the diamond-shaped adjustment frame by sliding the first hinged rod 11 in the adjustment slot 21) according to the thickness, length and fracture site of the finger to adapt it to the contour of the finger. After adjustment, the first hinged rod 11 is locked in the adjustment slot 21 of the shaping plate 20 with the first fixing member 50. Next, the shaping frame is placed on the first hinged rod 11 located outside the shaping plate 20 through its second hinged rod 31, and the two are fixedly connected by the second fixing member 60. Finally, the free end of each elastic band 40 is tightened and connected to the corresponding adjustment rod 10, so that the shaping plate 20 fits tightly to the finger. The shaping frame and the adjustment frame jointly provide support, and the elastic band 40 provides flexible constraint fixation. The entire device has a clear structure and a clear connection relationship, which can achieve accurate, stable and comfortable fixation for different individuals and different fingers.

[0052] Reference Figure 4 To further enhance the stability and functional versatility of the device, in a preferred embodiment, a reinforcement rod 70 may be inserted between the two first hinged rods 11 located outside the shaping plate 20. This reinforcement rod 70 runs through the two first hinged rods 11, effectively limiting relative movement between them, preventing unexpected deformation or displacement after fixation, and improving overall rigidity. When multiple adjacent fingers need to be fixed, the reinforcement rods 70 on two adjacent finger fixation devices can be detachably connected via a connector (such as a clamp or strap). This allows adjacent fixed fingers to be linked, providing greater overall stability, which is particularly suitable for situations requiring the joint fixation of multiple fingers.

[0053] Reference Figure 5 In order to extend the fixation of the fingers to the wrist and provide more comprehensive support, the device can also include a wristband 80. The wristband 80 can be installed on the wrist in a winding manner and fixed with Velcro, or it can be sleeved on the wrist using an elastic rubber wristband 80. The wristband 80 includes a fixing component 81 that fits on the wrist, which can be a fixing plate made of rigid plastic. The fixing plate is detachably connected to a mounting rod 82 (which can be a rigid or semi-rigid rod). During assembly, the mounting rod 82 passes through the reinforcement rod 70 and is then plugged into the socket on the side of the fixing plate. The bolt passes through the socket to press and fix the mounting rod 82. In this way, the finger fixing device can be firmly connected to the wristband 80, so that the injured finger and palm remain flush, and additional support points are provided through the wrist and fingers to reduce the force on the fingers.

[0054] Reference Figure 6In order to further enhance the fixation and protection of key parts of the fingers (such as knuckles or fracture points), the device may also include a reinforcement plate 90. The reinforcement plate 90 is designed to fit the shape of the finger and is used to fit directly on the finger. It is opposite to the shaping plate 20 so that the finger is located between the reinforcement plate 90 and the shaping plate 20. A clearance groove 91 is provided on the reinforcement plate 90, and the clearance groove 91 allows the shaping rod 30 to pass through. The reinforcement plate 90 itself is installed and fixed to the shaping frame in a detachable manner (for example, clamping, bolting, etc.). When the reinforcement plate 90 is installed in place, its clearance groove 91 accommodates the shaping rod 30 to pass through, and the reinforcement plate 90 body is in close contact with the surface of the finger, providing additional local support and protection.

[0055] Reference Figure 7 More specifically, when the reinforcement plate 90 is installed, the two second hinged rods 31 connected to the first hinged rod 11 (i.e., those passed through by the first hinged rod 11) are typically located outside the reinforcement plate 90. The other two second hinged rods 31 (typically aligned with the longitudinal axis of the forming frame) are removably fixed to the reinforcement plate 90 via connectors (e.g., bolts or clips), thereby securely integrating the reinforcement plate 90 into the forming frame structure. In this application, bolts pass through the reinforcement plate 90 and threadably connect the second hinged rods 31, creating a removable connection between the reinforcement plate 90 and the forming frame.

[0056] Reference Figure 7 and Figure 8 The reinforcement plate 90 comprises a fixed portion 92 and two sliding portions 93. The fixed portion 92 is generally shaped like a "convex" character, with a raised surface for contact with the finger and a flat surface for the sliding portions 93 to slide on. A clearance groove 91 is defined in the sliding portion 93, while a long groove 94 (typically extending along the width of the finger) is defined in the fixed portion 92. A slider 95 is fixedly connected to the sliding portion 93, which slides within the long groove 94. When the shaping frame is assembled, the shaping rod 30 passes through the clearance groove 91 in the sliding portion 93. Simultaneously, the two second hinged rods 31 (connected to the reinforcement plate 90 along the longitudinal axis of the shaping frame) pass through the through-holes in the sliding portion 93 and the long grooves 94 in the fixed portion 92. Nuts are threaded onto the ends of the second hinged rods 31. By tightening the nuts against the outer surface of the fixed portion 92, the sliding portion 93, the fixed portion 92, and the second hinged rods 31 are securely fastened together.

[0057] Reference Figure 8 To improve wearing comfort and increase friction with the shaping rod 30, the sliding portion 93 can be equipped with an elastic pad 96 (e.g., rubber or silicone pad) on the inner wall of its clearance groove 91. When the shaping rod 30 passes through the clearance groove 91, the elastic pad 96 will contact and slightly squeeze the side wall of the shaping rod 30, providing a cushion and helping to prevent the shaping rod 30 from shaking within the groove.

[0058] The implementation principle of a finger fixing device in the embodiment of the present application is as follows:

[0059] A deformable adjustment frame, formed by four adjustment rods 10 hinged end-to-end by a first hinge rod 11, is slidably connected to a shaping plate 20 with a lengthwise adjustment slot 21 (two first hinge rods 11 located on the same line slide within the slot, while the other two first hinge rods 11 are located outside the plate). A first fixing member 50 locks the position, achieving preliminary individualized adaptation of the device to the finger's size (thickness and length). Furthermore, the shaping frame, formed by four shaping rods 30 hinged end-to-end by a second hinge rod 31, is secured by two first hinge rods 11 located outside the shaping plate 20, passing through the corresponding second hinge rods 31 and secured with a second fixing member 60. This locks the shaping frame's shape in tandem with the adjustment frame, providing a stable external support framework. Multiple elastic bands 40 are spaced along the shaping rods 30 to create a gradient restraining force, which better conforms to the irregular curves of the finger compared to traditional, one-piece fixing methods. The deformation of the adjustment frame drives the shaping frame's positional changes, which are then flexibly fixed by the elastic bands 40. This three-level structure (adjustable skeleton → hard support → soft restraint) not only ensures the rigidity requirements but also meets the biomechanical comfort, improving the individual adaptation problem pointed out by the background technology.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A finger fixing device, characterized in that: include: Adjustment rods (10), four of which are connected end to end to form an adjustment frame, and a first hinged rod (11) is rotatably connected between two adjacent adjustment rods (10); A shaping plate (20) is used for contacting the finger, and an adjustment groove (21) is provided on a side of the shaping plate (20) facing away from the finger, wherein the adjustment groove (21) extends along the length direction of the shaping plate (20), wherein two first hinge rods (11) located on the same straight line are slidably mounted in the adjustment groove (21), and the other two first hinge rods (11) are located outside the shaping plate (20); A first fixing member (50) is used to fix the two first hinge rods (11) in the adjustment slot (21) to the shaping plate (20); Four shaping rods (30) are connected end to end to form a shaping frame, a second hinge rod (31) is rotatably connected between two adjacent shaping rods (30), and two first hinge rods (11) located outside the shaping plate (20) respectively pass through one of the second hinge rods (31); A second fixing member (60) is used to fixedly connect the first hinge rod (11) and the second hinge rod (31); An elastic band (40) has one end fixedly mounted on the shaping rod (30) and the other end detachably connected to the adjusting rod (10); a plurality of elastic bands (40) are arranged at intervals along the length direction of each shaping rod (30).

2. A finger fixing device according to claim 1, characterized in that: A reinforcement rod (70) is provided between the two first hinge rods (11) located outside the shaping plate (20).

3. A finger fixing device according to claim 2, characterized in that: The reinforcement rods (70) between two adjacent fingers are detachably connected.

4. A finger fixing device according to claim 3, characterized in that: It also includes a wristband (80), the wristband (80) is connected to a mounting rod (82), and the mounting rod (82) passes through the reinforcement rod (70).

5. The finger fixing device according to claim 4, characterized in that: It also includes a reinforcing plate (90), on which a clearance groove (91) for the shaping rod (30) to pass is provided. The reinforcing plate (90) and the shaping rod (30) are detachably mounted, and the reinforcing plate (90) is used to fit on a finger.

6. The finger fixing device according to claim 5, characterized in that: The second hinge rod (31) connected to the first hinge rod (11) is located outside the reinforcement plate (90), and the other two second hinge rods (31) and the reinforcement plate (90) are detachably connected.

7. The finger fixing device according to claim 6, characterized in that: The reinforcing plate (90) includes a fixed portion (92) and two sliding portions (93), the giving way groove (91) is located on the sliding portion (93), the sliding portion (93) is slidably mounted on the fixed portion (92), the fixed portion (92) is provided with a long slot (94), and the second hinge rod (31) detachably connected to the reinforcing plate (90) passes through the sliding portion (93) and the long slot (94), and a nut is threadedly connected to the end of the second hinge rod (31).

8. The finger fixing device according to claim 7, characterized in that: The sliding portion (93) is provided with an elastic pad (96) in the clearance groove (91), and the elastic pad (96) is in contact with the shaping rod (30).

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