Force alignment device for high tibial osteotomy

Abstract

The application provides a force line fixing device for tibial high osteotomy, and relates to the technical field of osteotomy instruments.The force line fixing device for tibial high osteotomy comprises a base, a force line measuring assembly and a fixing assembly, the force line measuring assembly is fixed on the base for measuring the force line, and the fixing assembly is arranged on the base for fixing the ankle joint in a proper position.The fixing assembly comprises a height adjusting assembly arranged on the base, a fixing part for placing and fixing the ankle joint, the fixing part is connected to the height adjusting assembly and can be adjusted in height with the height adjusting assembly, and a universal adjusting assembly connected to the height adjusting assembly and the fixing part for adjusting the angle of the fixing part.The application can reduce the radiation dose of medical staff, improve the accuracy of limb force line measurement, reduce measurement error and improve the reliability of measurement results.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of osteotomy apparatus, in particular to a force line fixing device for high tibial osteotomy. BACKGROUND

[0002] At present, for patients with severe osteoarthritis of the knee, high tibial osteotomy is a better treatment method. Before the operation, measuring the target force line of the limb through X-ray perspective is a very critical step of high tibial osteotomy. However, the current limb force line fixing device needs to be held by medical staff, which makes the surgical staff have to be exposed to radiation, greatly increasing the harm of radiation exposure of the surgical staff; and the error is easy to be caused by human fixing swing and hand shaking during operation, so that the accuracy of the measurement result is low. SUMMARY

[0003] The present application provides a limb force line fixing device, which does not need to be held by medical staff during X-ray perspective, reduces the dose of radiation received by medical staff, can improve the accuracy of limb force line measurement, reduce measurement error, and improve the reliability of measurement results.

[0004] The embodiment of the present application provides a force line fixing device for high tibial osteotomy, which comprises a base, a force line measuring assembly and a fixing assembly, the force line measuring assembly is fixed on the base for measuring the force line, and the fixing assembly is arranged on the base and used for fixing the ankle joint in a suitable position.

[0005] A height adjusting assembly is arranged on the base.

[0006] A fixing part is used for placing and fixing the ankle joint, and the fixing part is connected to the height adjusting assembly and can adjust the height with the height adjusting assembly.

[0007] A universal adjusting assembly is connected to the height adjusting assembly and the fixing part, and is used for adjusting the angle of the fixing part.

[0008] As a preferred scheme of the force line fixing device for high tibial osteotomy, the force line measuring assembly comprises a support and a measuring rod, the support is connected to the base, and the measuring rod is placed along the force line direction and connected to the support.

[0009] As a preferred scheme of the force line fixing device for high tibial osteotomy, the support is an arched support.

[0010] As a preferred solution of the force line fixing device for high tibial osteotomy, the fixing part comprises an L-shaped fixing plate and two telescopic stop plates arranged on both sides of the L-shaped fixing plate, and the two telescopic stop plates can clamp the patient's foot.

[0011] As a preferred solution of the force line fixing device for high tibial osteotomy, the telescopic stop plates are provided with guide plates, one end of the guide plate penetrates into the L-shaped fixing plate, and the other end is connected to the telescopic stop plate, one end of the guide plate penetrating into the L-shaped fixing plate is provided with a long hole arranged along the telescopic direction of the telescopic stop plate, and the other end of the guide plate penetrating into the L-shaped fixing plate is arranged in an overlapping manner, and when the positions of the two telescopic stop plates are adjusted, the long holes of the two guide plates are locked and fixed by a locking screw penetrating through the through hole of the L-shaped fixing plate and the long holes of the two guide plates.

[0012] As a preferred solution of the force line fixing device for high tibial osteotomy, the height adjusting assembly comprises a support pipe, a height adjusting column and a lifting locking knob; the support pipe is fixed on the base; the height adjusting column is sleeved in the support pipe; the side wall of the support pipe is provided with knob holes arranged in an interval from top to bottom, the knob holes are arranged in two rows, and the two rows of knob holes are coaxially arranged one by one, the knob hole matched with the lifting locking knob, the height adjusting column is provided with a radial through hole, and the lifting locking knob penetrates into one of the knob holes of the support pipe, the radial through hole and another knob hole at the same height in sequence, so as to lock and fix the support pipe.

[0013] As a preferred solution of the force line fixing device for high tibial osteotomy, the universal adjusting assembly comprises a ball head connecting seat, a hollow ball head limiting sleeve, a ball head locking block and a ball head locking knob; the hollow ball head limiting sleeve is installed on the height adjusting assembly; the first end of the ball head connecting seat is fixed on the fixing part, the second end of the ball head connecting seat is provided with a universal ball head, the universal ball head is clamped into the first end of the hollow ball head limiting sleeve, and the ball head locking block is sleeved in the hollow ball head limiting sleeve; wherein the first end of the ball head locking block abuts against the universal ball head, and the ball head locking knob penetrates into the second end of the hollow ball head limiting sleeve and abuts against the second end of the ball head locking block in sequence, so as to abut tightly the ball head locking block and the universal ball head.

[0014] As a preferred solution of the force line fixing device for high tibial osteotomy, the base is provided with a folding plate, and the folding plate can increase the supporting area of the base when it is opened.

[0015] As a preferred solution of the above-mentioned force line fixation device for high tibial osteotomy, a groove is provided on the bottom surface of the base, the folding plate is arranged in the groove and the thickness of the folding plate is the same as the depth of the groove, and the folding plate can be rotated relative to the base to the outside of the base.

[0016] As a preferred solution of the above-mentioned force line fixation device for high tibial osteotomy, the base, the force line measurement component and the fixation component are all made of aluminum alloy.

[0017] The beneficial effects of the present invention are as follows: The force line fixation device for high tibial osteotomy of the present invention has both the force line measurement component and the fixation component mounted on a base, and both components can be operated without the need for manual manipulation, thus preventing the surgeon from being exposed to prolonged radiation. Furthermore, the force line fixation device utilizes the fixation component to achieve accurate positioning, avoiding jitter errors caused by manual manipulation and ensuring the accuracy of the force line measurement results.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purposes and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic structural diagram of the force line fixation device for high tibial osteotomy of the present invention;

[0022] Figure 2 It is a longitudinal cross-sectional view of the force line fixation device for high tibial osteotomy of the present invention.

[0023] In the figure: 1. Base; 2. Force line measurement component; 3. Fixing component;

[0024] 11. Folding plate; 12. Groove;

[0025] 21. Bracket; 22. Measuring rod; 23. Connector;

[0026] 31. Height adjustment assembly; 32. Fixing portion; 33. Universal adjustment assembly;

[0027] 311, support tube; 312, height adjustment column; 313, lift locking knob; 314, knob hole; 315, radial through hole;

[0028] 321, L-shaped fixing plate; 322, retractable baffle; 323, guide plate; 324, locking screw; 325, locking nut; 326, guide rod;

[0029] 331. Ball joint connector; 332. Hollow ball joint limit sleeve; 333. Ball joint locking block; 334. Ball joint locking knob. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] To facilitate understanding of this embodiment, a limb force line fixing device disclosed in the present invention is described in detail below through an embodiment.

[0032] like Figure 1 As shown, this embodiment provides a force line fixation device for high tibial osteotomy, which includes a base 1, a force line measurement component 2, and a fixing component 3. The force line measurement component 2 is fixed on the base 1 for measuring the force line, and the fixing component 3 is arranged on the base 1 for fixing the ankle joint in a suitable position. The fixing component 3 includes a height adjustment component 31, a fixing portion 32, and a universal adjustment component 33. The height adjustment component 31 is arranged on the base 1; the fixing portion 32 is used to place the ankle joint and fix the ankle joint, and the fixing portion 32 is connected to the height adjustment component 31 and can adjust the height with the height adjustment component 31; the universal adjustment component 33 connects the height adjustment component 31 and the fixing portion 32, and is used to adjust the angle of the fixing portion 32.

[0033] In the force line fixation device for high tibial osteotomy in this embodiment, the force line measurement component 2 and the fixation component 3 are both arranged on the base 1, and both can be held without the need for real-time hand-holding, thereby avoiding long-term exposure of surgical personnel to radiation. At the same time, the force line fixation device can use the fixation component 3 to achieve accurate positioning, avoiding the jitter error caused by hand-holding, and ensuring the accuracy of the force line measurement results.

[0034] The force line measuring assembly 2 comprises a support 21 connected to the base 1 and a measuring rod 22 placed along the force line direction and connected to the support 21. The measuring rod 22 is fixed through the support 21, so as to avoid the hand holding of the measuring rod 22 by the surgical staff. The measuring rod 22 is a length extension piece consistent with the extension direction of the lower limbs of the human body, and the force line of the lower limbs is measured by aligning the two ends of the measuring rod 22 with the center points of the femoral head and the ankle of the human body.

[0035] The support 21 is an arch-shaped frame through which the affected limb can pass. The arch-shaped frame is formed by an arc-shaped rod, and when the position of the measuring rod 22 is adjusted, the connector 23 is loosened, directly slid and fastened, so as to complete the position adjustment in the vertical direction and the horizontal direction without being completely disassembled, and the operation is more convenient and easy to adjust. Two vertical rods are arranged on the base 1, and the two vertical rods are connected to the two ends of the arch-shaped frame, respectively. The height of the arch-shaped frame relative to the base 1 can be adjusted according to different patients, so that the applicability of the force line fixing device is wide.

[0036] The fixing part 32 comprises an L-shaped fixing plate 321 and two extendable baffles 322 arranged on the two sides of the L-shaped fixing plate 321. The L-shaped fixing plate 321 comprises a vertical plate and a horizontal plate, wherein the vertical plate is arranged perpendicularly to the horizontal plate. The horizontal plate is arranged at the lower end of the vertical plate and is used for supporting the feet of the patient, and the soles of the feet of the patient are arranged on the vertical plate. The two extendable baffles 322 can clamp the feet of the patient. Thus, the feet of the patient are fixed through the L-shaped fixing plate 321 and the two extendable baffles 322, so as to ensure that the target force line does not move.

[0037] As shown in FIGS. 1, 2 and 3, the L-shaped fixing plate 321 is arranged on the base 1, and the two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively. The two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively, and the two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively. Figure 1 and Figure 2 As shown in FIGS. 1, 2 and 3, the L-shaped fixing plate 321 is arranged on the base 1, and the two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively. The two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively, and the two extendable baffles 322 are arranged on the two sides of the L-shaped fixing plate 321, respectively.

[0038] In the embodiment, the locking screw 324 comprises a head and a rod, wherein the head is in a rectangular structure, and a receiving groove in a rectangular recess 12 is arranged on the L-shaped fixing plate 321 to accommodate the head of the locking screw 324. After the head of the locking screw 324 is implanted into the receiving groove, the receiving groove can limit the rotation of the locking screw 324. When it is necessary to lock the locking nut 325, the head of the locking screw 324 is limited by the receiving groove, and the locking nut 325 can be directly tightened, which is simple to operate.

[0039] In the embodiment, the telescopic baffle 322 is further provided with guide rods 326 above and below the guide plate 323. The guide rods 326 can extend into the L-shaped fixing plate 321 to ensure the stability of the movement of the telescopic baffle 322 and avoid problems such as jamming.

[0040] As shown in Figure 1 and Figure 2 , the height adjusting assembly 31 comprises a support pipe 311, a height adjusting column and a lifting locking knob. The support pipe 311 is fixed on the base 1. The height adjusting column is sleeved in the support pipe 311. A plurality of knob holes are arranged on the side wall of the support pipe 311 in a spaced manner from top to bottom. The knob holes are arranged in two rows and coaxially correspond to each other. The height adjusting column is provided with a radial through hole. The lifting locking knob is sequentially inserted into a knob hole on the support pipe 311, the radial through hole and another knob hole at the same height, so as to lock and fix the support pipe 311. By adjusting the lifting locking knob to be inserted into the knob holes at different heights, the height of the height adjusting column is adjusted, so that the height position of the fixing part 32 can be adjusted by the height adjusting assembly 31, and the appropriate body position of the patient can be ensured.

[0041] In order to further reasonably adjust the body position of the patient or apply different types of operations, the fixing part 32 in the embodiment is connected with the height adjusting assembly 31 through the universal adjusting assembly 33. As shown in Figure 2 , the universal adjusting assembly 33 comprises a ball head connecting seat 331, a hollow ball head limiting sleeve 332, a ball head locking block 333 and a ball head locking knob 334. The hollow ball head limiting sleeve 332 is installed on the height adjusting assembly 31. The first end of the ball head connecting seat 331 is fixed on the L-shaped fixing plate 321, and the second end of the ball head connecting seat 331 is provided with a universal ball head. The universal ball head is clamped into the first end of the hollow ball head limiting sleeve 332. The ball head locking block 333 is sleeved in the hollow ball head limiting sleeve 332. The first end of the ball head locking block 333 abuts against the universal ball head. The ball head locking knob 334 is sequentially inserted into the second end of the hollow ball head limiting sleeve 332 and abuts against the second end of the ball head locking block 333, so as to abut tightly the ball head locking block 333 and the universal ball head.

[0042] In the embodiment, the hollow ball head limiting sleeve 332 comprises a first sleeve and a second sleeve which are detachably connected, the first sleeve and the second sleeve are connected through threads, and the first sleeve and the second sleeve form a space for accommodating the universal ball head after being connected. The first sleeve is internally provided with a spherical surface structure which is in contact with the universal ball head. The second sleeve is connected with the height adjusting assembly 31, and is internally provided with a guide groove in which a ball head locking block 333 is arranged. The ball head locking block 333 is arranged in the guide groove and can move along the guide groove under the pressure of a ball head locking knob 334. The first end of the ball head locking block 333 is in a spherical surface structure and is in contact with the universal ball head, and the second end of the ball head locking block 333 is in contact with the ball head locking knob 334. The ball head locking knob 334 is threadedly connected with the second sleeve, and can steplessly adjust the pressure of the ball head locking knob 334 on the ball head locking block 333.

[0043] The base 1 is provided with a folding plate 11 which can increase the supporting area of the base 1 after being opened.

[0044] The base 1 is provided with a groove 12 on the bottom surface, and the folding plate 11 is arranged in the groove 12 and has the same thickness as the depth of the groove 12. The folding plate 11 can be rotated to the outside of the base 1 relative to the base 1, and the force line fixing device can be more stable. When the force line fixing device is not needed, the folding plate 11 is rotated into the groove 12, so that the force line fixing device can avoid occupying too much space.

[0045] In the embodiment, the base 1, the force line measuring assembly 2 and the fixing assembly 3 are all made of aluminum alloy, can pass through X-rays, and can better ensure the accuracy of the target force line measurement of the patient.

[0046] In use, first, the patient's feet are placed on the L-shaped fixing plate 321, the telescopic baffle 322 is manually adjusted to fit the two sides of the patient's feet, the locking nut is tightened, and gauze is used to assist in tightening. Then, the height adjusting assembly 31 is adjusted to adjust the L-shaped fixing plate 321 to a height suitable for the patient; secondly, the universal adjusting assembly 33 is adjusted to adjust the angle of the patient's feet, and the position of the universal ball head is locked through the ball head locking knob 334; thirdly, the folding plate 11 on the base 1 is opened, and the force line fixing device is placed stably; finally, the measuring rod 22 is adjusted so that the measuring rod 22 can cover the femoral head position and the ankle position, so that the force line measuring rod 22 is aligned with the center point of the femoral head and the center point of the ankle, the position of the force line measuring rod 22 is fixed through the connector 23, and accurate perspective measurement is realized.

[0047] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A force line fixation device for high tibial osteotomy, characterized in that: The invention comprises a base (1), a force line measurement component (2) and a fixing component (3), wherein the force line measurement component (2) is fixed on the base (1) for measuring the force line, and the fixing component (3) is arranged on the base (1) for fixing the ankle joint in a suitable position, and the fixing component (3) comprises: A height adjustment assembly (31) disposed on the base (1); A fixing portion (32) is used to place and fix the ankle joint, and the fixing portion (32) is connected to the height adjustment component (31) and can be adjusted in height along with the height adjustment component (31); a universal adjustment assembly (33), which connects the height adjustment assembly (31) and the fixing portion (32) and is used to adjust the angle of the fixing portion (32); The force line measurement assembly (2) includes a bracket (21) and a measuring rod (22), wherein the bracket (21) is connected to the base (1), and the measuring rod (22) is placed along the force line direction and connected to the bracket (21), wherein the bracket (21) is an arch frame, and the affected limb can pass through the bracket (21), and the arch frame is formed by an arc-shaped rod. When adjusting the position of the measuring rod (22), the connector (23) is loosened, and the connector is directly slid and then tightened to complete the position adjustment in the vertical and horizontal directions.

2. The force line fixation device for high tibial osteotomy according to claim 1, characterized in that: The fixing portion (32) comprises an L-shaped fixing plate (321) and retractable baffles (322) respectively provided on both sides of the L-shaped fixing plate (321), and the two retractable baffles (322) are capable of clamping the patient's feet.

3. The force line fixation device for high tibial osteotomy according to claim 2, characterized in that: A guide plate (323) is provided on the retractable baffle (322), one end of the guide plate (323) penetrates into the L-shaped fixing plate (321), and the other end is connected to the retractable baffle (322), and the end of the guide plate (323) that penetrates into the L-shaped fixing plate (321) is provided with a long hole arranged along the retractable direction of the retractable baffle (322), and the ends of the guide plates (323) on both sides that penetrate into the L-shaped fixing plate (321) are arranged to overlap with each other. When the positions of the guide plates (323) on both sides are adjusted, the locking screws (324) are passed through the through holes provided on the L-shaped fixing plate (321) and the long holes of the two guide plates (323), and then locked and fixed by the locking nuts (325).

4. The force line fixation device for high tibial osteotomy according to claim 1, characterized in that: The height adjustment assembly (31) comprises a support tube (311), a height adjustment column (312) and a lifting locking knob (313); the support tube (311) is fixed on the base (1); the height adjustment column (312) is sleeved in the support tube (311); the side wall of the support tube (311) is provided with knob holes (314) arranged at intervals from top to bottom, and the knob holes (314) are arranged in two rows, and the two rows of knob holes (314) are arranged in a row. A knob hole (314) is coaxially arranged to match the lifting and locking knob (313), and a radial through hole (315) is provided on the height adjustment column (312). The lifting and locking knob (313) is sequentially inserted into one of the knob holes (314), the radial through hole (315), and another knob hole (314) at the same height on the support tube (311) to lock and fix the support tube (311).

5. The force line fixation device for high tibial osteotomy according to claim 1, characterized in that: The universal adjustment assembly (33) comprises a ball head connection seat (331), a hollow ball head limiting sleeve (332), a ball head locking block (333) and a ball head locking knob (334); the hollow ball head limiting sleeve (332) is mounted on the height adjustment assembly (31); a first end of the ball head connection seat (331) is fixed to the fixing portion (32), and a universal ball head is provided at the second end of the ball head connection seat (331), and the universal ball head is snapped into the hollow ball head. The first end of the hollow ball head limiting sleeve (332) is provided with the ball head locking block (333) in the hollow ball head limiting sleeve (332); wherein the first end of the ball head locking block (333) abuts against the universal ball head, and the ball head locking knob (334) is sequentially inserted into the second end of the hollow ball head limiting sleeve (332) and abuts against the second end of the ball head locking block (333) to tightly abut the ball head locking block (333) and the universal ball head.

6. The force line fixation device for high tibial osteotomy according to claim 1, characterized in that: A folding plate (11) is provided on the base (1); when the folding plate (11) is opened, the supporting area of ​​the base (1) can be increased.

7. The force line fixation device for high tibial osteotomy according to claim 6, characterized in that: A groove (12) is provided on the bottom surface of the base (1), the folding plate (11) is arranged in the groove (12), and the thickness of the folding plate (11) is the same as the depth of the groove (12), and the folding plate (11) can be rotated relative to the base (1) to the outside of the base (1).

8. The force line fixation device for high tibial osteotomy according to claim 1, characterized in that: The base (1), the force line measurement component (2) and the fixing component (3) are all made of aluminum alloy.

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