External fixing frame for tibia fracture

Abstract

The utility model discloses an external fixing frame for tibia fracture, and relates to the technical field of medical instruments. The device comprises two fixing rings, a mounting plate is connected between the two fixing rings, a sliding groove is formed in the mounting plate in a penetrating mode, and a plurality of inserting grooves are formed in the opposite sides of the inner wall of the sliding groove in an array penetrating mode in the length direction of the sliding groove; a sliding block in sliding fit with the sliding groove is constructed on the mounting block, and a mounting groove is formed in the mounting block in a penetrating mode; the fixing ring, the mounting plate and the mounting block form an outer fixing frame, the mounting plate is fixed to the leg of a patient through the fixing ring, the kirschner wire is detachably mounted on the mounting block through the needle cylinder, and the position of the mounting block can be adjusted in a sliding mode through insertion fit of the L-shaped block and the insertion groove and sliding fit of the sliding block and the sliding groove; the kirschner wires can be fixed after sliding adjustment, so that the positions of the kirschner wires are convenient to adjust, and meanwhile, the number of the mounting blocks can be increased or decreased according to needs, so that the number of the kirschner wires is increased or decreased, and practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an external fixator for tibial fractures. Background Art

[0002] Tibial fracture is the most common long tubular bone fracture in clinical practice. It can occur at any age and its incidence accounts for 8% to 15% of all fractures in the body. The tibial anatomical structure is special, with less soft tissue coverage on the anterior and medial sides. The junction of the middle and lower 1 / 3 is the most vulnerable. After suffering high-energy injury, fractures in the middle and lower sections are the most common.

[0003] At present, Kirschner wires are usually used for the treatment of tibial fractures. Kirschner wires are commonly used internal fixation materials in orthopedics. They are used to fix short fractures or avulsion fractures with low stress. They are also used to fix temporary fracture fragments in orthopedic surgery. When Kirschner wires are used for internal fixation, external fixators are often used in conjunction. The number and position of Kirschner wires will change according to the condition of the fracture. The existing external fixators have the problem of inconvenient adjustment. Therefore, the present application proposes an external fixator for tibial fractures. Utility Model Content

[0004] The purpose of the present application is to solve the problem that existing external fixators are difficult to adjust and cannot be flexibly adjusted according to the number and position of Kirschner wires. The present application provides an external fixator for tibial fractures.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] An external fixator for tibial fractures, comprising:

[0007] Two fixing rings, with a mounting plate connected therebetween, a slide groove being formed through the mounting plate, and a plurality of slots being formed in an array along the length of the inner wall of the slide groove on opposite sides thereof;

[0008] The mounting block is constructed with a slider that slides with the slide groove. A mounting groove is formed in the mounting block, and the mounting groove has a first notch and two second notches. Two L-shaped blocks are movably arranged in the mounting groove. One end of the two L-shaped blocks movably passes through the two second notches and is respectively plugged into and matched with the slots on both sides. The other ends of the two L-shaped blocks movably pass through the first notch. A spring is connected between the two L-shaped blocks.

[0009] The syringe is arranged on the mounting block. A Kirschner wire is movably passed through the syringe. A fixing piece for fixing the Kirschner wire is arranged on the syringe.

[0010] Furthermore, a sliding rod is connected to the opposite side of the inner wall of the installation groove, and the two L-shaped blocks and the spring are movably mounted on the sliding rod.

[0011] Furthermore, the fixing member includes a sleeve connected to the syringe, a first screw rod is threaded through the sleeve, a pressure block is rotatably installed on the end of the first screw rod, and the pressure block is constructed as an arc block and is slidably inserted in the sleeve.

[0012] Furthermore, a through slot is provided on the mounting block, and shafts are rotatably passed through opposite sides of the inner wall of the through slot, the syringe movably passes through the through slot and is connected to the opposite ends of the two shafts, and an adjustment member is provided on the mounting block for adjusting the synchronous rotation of the two shafts.

[0013] Furthermore, the adjusting member includes a second screw rod rotatably arranged on the mounting block, gears are fixed on the two shafts, an adjusting plate is threadedly sleeved on the second screw rod, two racks are provided on the adjusting plate and the two racks are respectively engaged with the teeth of the two gears, and a guide rod is provided on the mounting block, the end of which is movable and passes through the adjusting plate.

[0014] Furthermore, the fixing ring includes two arc-shaped plates, one end of the two arc-shaped plates is hingedly connected, and the other end is fixed by a locking member.

[0015] Furthermore, the locking member includes two U-shaped seats, which are respectively arranged at the free ends of the two arc-shaped plates, wherein a screw is hinged on the opposite side of the inner wall of one of the U-shaped seats, and the free end of the screw is movable through the other U-shaped seat and is threadedly sleeved with a nut.

[0016] Furthermore, the inner wall of the arc-shaped plate is provided with a cushion.

[0017] The beneficial effects of this application are as follows:

[0018] In the present application, a fixing ring, a mounting plate and a mounting block form an external fixator, the mounting plate is fixed to the patient's leg through the fixing ring, and the Kirschner wire is detachably mounted on the mounting block through a syringe. Through the plug-in cooperation between the L-shaped block and the slot, and the sliding cooperation between the slider and the slide groove, not only the position of the mounting block can be adjusted by sliding, but also can be fixed after sliding adjustment, thereby facilitating the adjustment of the position of the Kirschner wire. At the same time, the number of mounting blocks can be increased or decreased as needed, thereby increasing or decreasing the number of Kirschner wires, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of this application;

[0020] Figure 2 This is a three-dimensional structural diagram of the installation block of this application;

[0021] Figure 3 This is a sectional view of the three-dimensional structure of the installation block of this application;

[0022] Figure 4 This is another three-dimensional structural cross-sectional view of the mounting block of the present application;

[0023] Figure 5 This is a three-dimensional structural diagram of the fixing ring of this application;

[0024] Figure 6 This is a three-dimensional structural diagram of the mounting plate of this application;

[0025] Figure 7 This application Figure 4 Enlarged view of point A in the middle;

[0026] Figure numerals: 1. fixing ring; 2. mounting plate; 3. slide groove; 4. slot; 5. mounting block; 6. mounting groove; 7. L-shaped block; 8. spring; 9. syringe; 10. Kirschner wire; 11. fixing piece; 12. slide rod; 13. through groove; 14. shaft; 15. adjusting piece; 16. cushion; 101. arc plate; 102. locking piece; 1021. U-shaped seat; 1022. screw; 1023. nut; 1101. housing; 1102. first screw rod; 1103. pressure block; 1501. second screw rod; 1502. gear; 1503. adjusting plate; 1504. rack; 1505. guide rod. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figure 1-Figure 7 As shown, an external fixator for tibial fractures proposed in one embodiment of the present application includes:

[0029] Two fixing rings 1 are connected with a mounting plate 2 between them. The fixing rings 1 are used to fix to the patient's legs, thereby fixing the mounting plate 2 to the patient's calf. The number of mounting plates 2 is symmetrically distributed. A slide groove 3 is formed through the mounting plate 2. A plurality of slots 4 are formed in an array along the length of the inner wall of the slide groove 3 on opposite sides. The slots 4 are square grooves.

[0030] The mounting block 5 is provided with a slider which is slidably matched with the slide groove 3. Figure 2The cross section of the mounting block 5 is T-shaped, and a mounting slot 6 is provided in the mounting block 5. The mounting slot 6 has a first slot and two second slots. The cross section of the mounting slot 6 is T-shaped, and two L-shaped blocks 7 are movably provided in the mounting slot 6. One end of the two L-shaped blocks 7 respectively movably passes through the two second slots and is respectively plugged into and matched with the slots 4 on both sides. The other ends of the two L-shaped blocks 7 both movably pass through the first slot. A spring 8 is connected between the two L-shaped blocks 7. In the initial state, under the elastic force of the spring 8, the two L-shaped blocks 7 move away from each other, and one end of the two L-shaped blocks 7 respectively movably passes through the two second slots. When the mounting block 5 needs to be installed in the mounting When installing on the plate 2, press the two L-shaped blocks 7 close to each other and squeeze the spring 8, so that one end of the two L-shaped blocks 7 shrinks into the second notch, and then fit the mounting block 5 to the mounting plate 2, so that the slider is inserted into the slide groove 3, and then loosen the two L-shaped blocks 7. Under the elastic force of the spring 8, the ends of the two L-shaped blocks 7 are slidably inserted into the corresponding two slots 4, thereby fixing the mounting block 5 to the mounting plate 2. Pressing the two L-shaped blocks 7 can fix or release the mounting block 5. When released, the sliding mounting block 5 can adjust its position accordingly, and the adjustment is convenient. At the same time, the number of mounting blocks 5 on the mounting plate 2 can be increased or decreased accordingly.

[0031] A syringe 9 is provided on the mounting block 5. A Kirschner wire 10 is movably inserted into the syringe 9. A fixing member 11 for fixing the Kirschner wire 10 is provided on the syringe 9. The syringe 9 is provided on the mounting block 5. The Kirschner wire 10 is movably inserted into the syringe 9 and then fixed by the fixing member 11, so that the Kirschner wire 10 is detachably connected to the mounting block 5, and one Kirschner wire 10 is installed on each mounting block 5;

[0032] In this solution, the fixing ring 1, the mounting plate 2 and the mounting block 5 form an external fixator. The mounting plate 2 is fixed to the patient's leg through the fixing ring 1. The Kirschner wire 10 is detachably mounted on the mounting block 5 through the syringe 9. Through the plug-in cooperation between the L-shaped block 7 and the slot 4, and the sliding cooperation between the slider and the slide groove 3, not only can the position of the mounting block 5 be adjusted by sliding, but it can also be fixed after sliding adjustment, thereby making it convenient to adjust the position of the Kirschner wire 10. At the same time, the number of mounting blocks 5 can be increased or decreased as needed, thereby increasing or decreasing the number of Kirschner wires 10, thereby improving practicality.

[0033] like Figure 3 As shown, in some embodiments, a sliding rod 12 is connected to the opposite side of the inner wall of the mounting groove 6, and the two L-shaped blocks 7 and the spring 8 are movably mounted on the sliding rod 12. Through the set sliding rod 12, the L-shaped block 7 and the spring 8 are movably mounted on the sliding rod 12, which can not only guide and limit the L-shaped block 7, but also guide and limit the spring 8, so as to maximize the use of its elastic deformation ability to ensure the stability of the mounting block 5 fixed on the mounting plate 2.

[0034] like Figure 7 As shown, in some embodiments, the fixing member 11 includes a sleeve 1101 connected to the syringe 9, and a first screw rod 1102 is threaded through the sleeve 1101, and a pressure block 1103 is rotatably installed on the end of the first screw rod 1102. The pressure block 1103 is constructed as an arc block and is slidably inserted in the sleeve 1101. The Kirschner wire 10 is movably inserted in the syringe 9. After adjusting the position of the Kirschner wire 10, the first screw rod 1102 is twisted to rotate and move, thereby driving the pressure block 1103 to squeeze and contact the Kirschner wire 10, and utilizing the friction force to fix the Kirschner wire 10. The arc-shaped structure of the pressure block 1103 is used to increase the contact area and improve the stability of the fixation.

[0035] like Figure 2 and Figure 3 As shown, in some embodiments, a through slot 13 is opened on the mounting block 5, and a shaft 14 is rotatably passed through the opposite sides of the inner wall of the through slot 13. The syringe 9 movably passes through the through slot 13 and is connected to the opposite ends of the two shafts 14. An adjusting member 15 for adjusting the synchronous rotation of the two shafts 14 is provided on the mounting block 5. The syringe 9 is hingedly set on the mounting block 5 through the through slot 13 through the shaft 14. The syringe 9 is adjusted to rotate with the shaft 14 as the center through the adjusting member 15, so that the angle of the Kirschner wire 10 can be adjusted to better fix the fracture site.

[0036] like Figure 3 As shown, in some embodiments, the adjusting member 15 includes a second screw rod 1501 rotatably arranged on the mounting block 5, and a gear 1502 is fixed on each of the two shafts 14. An adjusting plate 1503 is threadedly sleeved on the second screw rod 1501, and two racks 1504 are provided on the adjusting plate 1503, and the two racks 1504 are respectively engaged with the teeth of the two gears 1502. A guide rod 1505 is provided on the mounting block 5, and the end thereof is movably passed through the adjusting plate 1503. The second screw rod 1501 is twisted to rotate, and under the action of the thread and the sliding limit of the guide rod 1505, the adjusting plate 1503 is driven to move. When the adjusting plate 1503 moves, the two racks 1504 are respectively engaged with the teeth of the two gears 1502, thereby achieving the effect of driving the two shafts 14 to rotate synchronously. The cooperation between the thread of the adjusting plate 1503 and the second screw rod 1501 is self-locking to ensure that the Kirschner wire 10 can be stably fixed after the angle is adjusted.

[0037] like Figure 5As shown, in some embodiments, the fixing ring 1 includes two arc-shaped plates 101, one end of the two arc-shaped plates 101 is hingedly connected, and the other end is fixed by a locking member 102. One of the arc-shaped plates 101 is fitted to the leg, and the other arc-shaped plate 101 is rotated around the hinge point to fit the leg, and then fixed by the locking member 102, so that it is more convenient to fix the fixing ring 1 to the leg or release the fixation.

[0038] like Figure 5 As shown, in some embodiments, the locking member 102 includes two U-shaped seats 1021, and the two U-shaped seats 1021 are respectively arranged at the free ends of the two curved plates 101, and a screw 1022 is hinged on the opposite side of the inner wall of one of the U-shaped seats 1021, and the free end of the screw 1022 is movable through the other U-shaped seat 1021 and is threadedly sleeved with a nut 1023. When the two curved plates 101 are buckled on the legs, the nut 1023 is loosened first, and it does not need to be completely withdrawn. Then the screw 1022 is rotated around the hinge point and clamped on the other U-shaped seat 1021, and then the nut 1023 is tightened so that the nut 1023 contacts the U-shaped seat 1021, so as to fix the two curved plates 101 on the legs.

[0039] like Figure 5 As shown, in some embodiments, a soft pad 16 is provided on the inner wall of the curved plate 101. The soft pad 16 can be a silicone pad or a sponge pad. By providing the soft pad 16 on the inner wall of the curved plate 101, while ensuring that the fixing ring 1 is effectively fixed on the patient's leg, it will not cause hard resistance to the patient's leg, thereby improving the comfort of the patient's leg.

[0040] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An external fixator for tibial fracture, characterized in that: include: Two fixing rings (1) are connected with a mounting plate (2) therebetween. A slide groove (3) is provided through the mounting plate (2). A plurality of slots (4) are provided in an array along the length direction of the inner wall of the slide groove (3) on opposite sides thereof. A mounting block (5) is constructed with a slider configured to slide with the slide groove (3); a mounting groove (6) is provided in the mounting block (5); the mounting groove (6) has a first notch and two second notches; two L-shaped blocks (7) are movably provided in the mounting groove (6); one end of the two L-shaped blocks (7) respectively movably passes through the two second notches and is plugged into and matched with the slots (4) on both sides; the other ends of the two L-shaped blocks (7) both movably pass through the first notch; a spring (8) is connected between the two L-shaped blocks (7); A needle cylinder (9) is arranged on a mounting block (5), a Kirschner wire (10) is movably passed through the needle cylinder (9), and a fixing piece (11) for fixing the Kirschner wire (10) is provided on the needle cylinder (9).

2. The external fixator for tibial fracture according to claim 1, characterized in that: A slide bar (12) is connected to the opposite side of the inner wall of the installation groove (6), and the two L-shaped blocks (7) and the spring (8) are movably sleeved on the slide bar (12).

3. The external fixator for tibial fracture according to claim 1, characterized in that: The fixing member (11) includes a housing (1101) connected to the syringe (9), a first screw rod (1102) is threaded through the housing (1101), a pressure block (1103) is rotatably mounted on the end of the first screw rod (1102), and the pressure block (1103) is constructed as an arc block and is slidably inserted into the housing (1101).

4. The external fixator for tibial fracture according to claim 1, characterized in that: The mounting block (5) is provided with a through slot (13), and opposite sides of the inner wall of the through slot (13) are both rotatably penetrated by shafts (14), and the needle cylinder (9) movably penetrates the through slot (13) and is connected to opposite ends of the two shafts (14), and the mounting block (5) is provided with an adjusting member (15) for adjusting the synchronous rotation of the two shafts (14).

5. The external fixator for tibial fracture according to claim 4, characterized in that: The adjusting member (15) comprises a second screw rod (1501) rotatably arranged on the mounting block (5); a gear (1502) is fixedly provided on each of the two shaft rods (14); an adjusting plate (1503) is threadedly sleeved on the second screw rod (1501); two racks (1504) are provided on the adjusting plate (1503); and the two racks (1504) are respectively engaged with the teeth of the two gears (1502); and a guide rod (1505) is provided on the mounting block (5), the end of which is movable and passes through the adjusting plate (1503).

6. The external fixator for tibial fracture according to claim 1, characterized in that: The fixing ring (1) comprises two arc-shaped plates (101), one end of the two arc-shaped plates (101) is hingedly connected, and the other end is fixed by a locking member (102).

7. The external fixator for tibial fracture according to claim 6, characterized in that: The locking member (102) comprises two U-shaped seats (1021), the two U-shaped seats (1021) being respectively arranged at the free ends of the two arc-shaped plates (101), a screw rod (1022) being hingedly connected to the opposite side of the inner wall of one of the U-shaped seats (1021), the free end of the screw rod (1022) being movable through the other U-shaped seat (1021) and being threadedly sleeved with a nut (1023).

8. The external fixator for tibial fracture according to claim 6, characterized in that: The inner wall of the arc-shaped plate (101) is provided with a soft pad (16).

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