Tibia osteotomy correction guiding and fixing device

Abstract

The utility model relates to a guiding and fixing device for tibia osteotomy correction, which belongs to the technical field of medical instruments and comprises a positioning offset guide plate, a guiding insertion port for insertion of a convenient detachable deflection angle insertion block is arranged in the middle of the positioning offset guide plate, and a fixing needle guide hole is fixedly arranged on the positioning offset guide plate. A device fixing needle is assembled in the fixing needle guide hole, and the device fixing needle is matched with the fixing guide plate after correction and used for fixing the corrected tibia. According to the utility model, by arranging the guiding and fixing device which is simultaneously provided with the guiding and fixing offset guide plate, the convenient and fast detachable deflection angle insertion block and the limiting and fixing plate, the positioning offset guide plate is combined with the convenient and fast detachable deflection angle insertion block, so that accurate offset tibia osteotomy is facilitated to form an accurate included angle; and accurate and stable fixation after correction of the tibia after osteotomy is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a tibial osteotomy correction guide and fixation device. Background Art

[0002] Tibial osteotomy correction surgery is to first cut the tibia when the tibia is deformed, and then rotate and offset the tibia on both sides of the osteotomy surface to make it form a certain angle, so that the deformed force line of the deformed tibia is deflected to the position of the normal force line, and then fix the steel plate on the tibia on both sides of the osteotomy surface to keep the tibia in the normal force line position. The key to this operation is to accurately and smoothly offset the tibial osteotomy site, so that the tibia on both sides is at an accurate angle to restore the normal force line.

[0003] In the prior art, after the osteotomy is completed during the corrective surgery, the severed tibia at both ends is clamped and deflected by a steel clamp, and after being rotated to the target position based on experience, a fixing plate is nailed into the tibia on both sides, thereby completing the corrective surgery.

[0004] At present, the existing technology uses steel clamps to deflect and then fix the tibia that has been cut off at both ends. Since the deflection angle is determined by the experience of medical personnel, errors are very likely to occur. In addition, when the steel frame is clamped and then the fixed steel plate is nailed in, the steel clamp and the fixed steel plate are likely to interfere with each other, which is not conducive to the installation of the fixed plate. In addition, this operation has a large external force impact and it is very easy to cause the tibia to vibrate and deviate under the clamping of the steel clamp, resulting in a change in the deflection angle, and ultimately resulting in incorrect deflection angle and failure of the operation. Utility Model Content

[0005] In view of this, the purpose of the utility model is to propose a tibial osteotomy correction guide and fixation device, which solves the problem in the prior art that there is a lack of a guide device that can accurately offset the tibial osteotomy to form an accurate angle and a fixation device without fixed interference, resulting in the inability to complete the correction and fixation conveniently, quickly and accurately, and ultimately causing the failure of the operation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tibial osteotomy correction guide and fixation device comprises a positioning offset guide plate, a guide insertion port for inserting a convenient and detachable deflection angle plug block is provided in the middle of the positioning offset guide plate, a fixing needle guide hole is fixedly provided on the positioning offset guide plate, a device fixing needle is assembled in the fixing needle guide hole, and the device fixing needle cooperates with the fixing guide plate after correction to fix the corrected tibia.

[0008] Furthermore, the positioning offset guide plate includes an upper positioning plate and a lower positioning plate, the guide insertion port is fixedly arranged at the connection between the upper positioning plate and the lower positioning plate, and the outer sleeve of the guide insertion port is provided with a sealing fixing sleeve for initially fixing the positioning offset guide plate.

[0009] Furthermore, the conveniently detachable deflection angle plug includes a bone insertion plug and a push plug plate, a clip groove is provided at the tail of the bone insertion plug, a clip joint is fixedly provided at the head of the push plug plate, and the clip joint and the clip groove cooperate with each other.

[0010] Furthermore, the inclination angle of the bone insertion plug is the same as the tibial correction angle, and the length of the bone insertion plug is smaller than the cross-sectional diameter of the tibial osteotomy.

[0011] Furthermore, the head of the bone insertion plug is configured as an arc-shaped head.

[0012] Furthermore, the inner side surface of the fixing guide plate is the same as the surface of the bone after correction, and fixing nail holes are provided on the fixing guide plate.

[0013] The utility model has the following beneficial effects:

[0014] The utility model provides a guiding and fixing device which is equipped with a guiding and fixing offset guide plate, a convenient and detachable deflection angle plug and a limiting fixing plate. The positioning offset guide plate is combined with the convenient and detachable deflection angle plug, which is conducive to accurately offsetting the tibial osteotomy to form an accurate angle. Under the support of the bone insertion plug and combined with the fixation of the fixing guide plate, it is conducive to achieving accurate and stable correction and fixation of the tibia after osteotomy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Front view of the positioning offset guide;

[0016] Figure 2 A side view of the guide plate for positioning offset;

[0017] Figure 3 Insert the corner block front view for positioning the offset guide;

[0018] Figure 4 Insert corner block side view for positioning offset guide;

[0019] Figure 5 Insert corner block for positioning offset guide rear view;

[0020] Figure 6 Work drawing for inserting corner blocks;

[0021] Figure 7 Working drawing for inserting fixed guide;

[0022] Figure 8 This is the corner block structure diagram.

[0023] Description of reference numerals:

[0024] 1. Positioning offset guide plate; 2. Upper positioning plate; 3. Lower positioning plate; 4. Conveniently detachable deflection angle plug; 5. Guide insertion port; 6. Sealing fixing sleeve; 7. Bone plug; 8. Push-in plug plate; 9. Snap-in groove; 10. Snap-in joint; 11. Fixing pin guide hole; 12. Install fixing pin; 13. Fixing guide plate; 14. Fixing nail hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Reference Figure 1-8The utility model provides an embodiment: a tibial osteotomy correction guide fixing device, including a positioning offset guide plate 1, the positioning offset guide plate includes an upper positioning plate 2 and a lower positioning plate 3, a guide insertion port 5 for inserting a convenient and detachable deflection angle plug 4 is provided in the middle of the positioning offset guide plate, the guide insertion port is fixedly arranged at the connection between the upper positioning plate and the lower positioning plate, and the upper positioning plate and the lower positioning plate both have half of the guide insertion port structure at the boundary, and a sealing fixing sleeve 6 for initially fixing the positioning offset guide plate is sleeved on the outside of the guide insertion port, the purpose of which is to fix the upper positioning plate and the lower positioning plate into a whole plate to facilitate the one-time bone surface fitting and nailing of the guide nail positioning, wherein the convenient and detachable deflection angle plug includes a bone insertion plug 7 and a pushing plug plate 8, a clamping groove 9 is provided at the tail of the bone insertion plug, a clamping joint 10 is fixedly arranged at the head of the pushing plug plate, and The card joint and the card groove match each other, and the inclination angle of the bone plug is the same as the correction angle of the tibia, that is, the correction angle is obtained through the preoperative treatment plan, and the bone plug is manufactured according to the correction angle, and the length of the bone plug is ensured to be less than the cross-sectional diameter of the tibial osteotomy, so that when the bone plug is inserted into the bone crack and the push-in plate is withdrawn, no part exceeding the bone cross-section is generated, and it is ensured that there is no interference when the last fixed fixing guide plate 13 is bound later. When the fixing guide plate is assembled, a fixing needle guide hole 11 is fixedly provided on the positioning offset guide plate, and a device fixing needle 12 is assembled in the fixing needle guide hole. After the device fixing needle is inserted into the plug to correct the tibia, it cooperates with the fixing guide plate to fix the corrected tibia. The inner side of the fixing guide plate is the same as the bone surface after correction, and a fixing nail hole 14 is opened on the fixing guide plate for assembling and fixing the fixing guide plate.

[0028] In the implementation process of this embodiment, first, the positioning offset guide is aligned with the tibia to be corrected, the bone surface is fitted, and then the positioning offset guide is attached to the bone surface, and then the positioning offset guide is nailed into the fixing pin guide hole to the tibia through the device fixing pin, so as to fix it on the tibia bone surface, and then the assembled convenient detachable deflection angle plug is aligned with the guide insertion port between the upper positioning plate and the lower positioning plate. After alignment, the sealing fixing sleeve is removed, and then the bone insertion plug is inserted into the tibial fracture through the pushing plug plate along the guide insertion port. When the bone insertion plug completely enters the tibial osteotomy surface and reaches the target position, the tibia correction deflection is completed. At this time, the card slot of the pushing plug plate is separated from the card joint of the bone insertion plug. During separation, the position of the bone insertion plug is ensured to remain unchanged. After separation, only the bone insertion plug maintains the correction angle posture in the tibia, and then the positioning offset guide is removed from the tibia, and then the fixing guide plate is nailed into the tibia through the fixing nail to complete fixation.

[0029] This embodiment provides a guiding and fixing device that simultaneously has a guiding and fixing offset guide plate, a convenient and detachable deflection angle plug and a limiting fixing plate. The positioning offset guide plate is combined with the convenient and detachable deflection angle plug, which is conducive to accurately offsetting the tibial osteotomy to form a precise angle. With the support of the bone insertion plug and the fixation of the fixed guide plate, it is conducive to achieving accurate and stable post-correction fixation of the tibia after osteotomy.

[0030] In this embodiment, the head of the bone insertion plug is configured as an arc-shaped head, which helps to avoid injury to the bone during insertion.

[0031] In this embodiment, rough stripes are provided on the outer side of the push plug plate, which is helpful to prevent slipping when pushing in.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tibial osteotomy correction guide fixation device, characterized in that: It comprises a positioning offset guide plate, wherein a guide insertion port for inserting a conveniently detachable deflection angle plug is provided in the middle of the positioning offset guide plate, a fixing needle guide hole is fixedly provided on the positioning offset guide plate, a device fixing needle is assembled in the fixing needle guide hole, and the device fixing needle cooperates with the fixing guide plate after correction to fix the corrected tibia.

2. A tibial osteotomy correction guide and fixation device according to claim 1, characterized in that: The positioning offset guide plate includes an upper positioning plate and a lower positioning plate, the guide insertion port is fixedly arranged at the connection between the upper positioning plate and the lower positioning plate, and the outer sleeve of the guide insertion port is provided with a sealing fixing sleeve for initially fixing the positioning offset guide plate.

3. A tibial osteotomy correction guide and fixation device according to claim 2, characterized in that: The conveniently detachable deflection angle plug includes a bone insertion plug and a push plug plate. A clamping groove is provided at the tail of the bone insertion plug, and a clamping joint is fixedly provided at the head of the push plug plate. The clamping joint and the clamping groove match each other.

4. A tibial osteotomy correction guide and fixation device according to claim 3, characterized in that: The inclination angle of the bone insertion plug is the same as the tibia correction angle, and the length of the bone insertion plug is smaller than the cross-sectional diameter of the tibia osteotomy.

5. The tibial osteotomy correction guide and fixation device according to claim 3, characterized in that: The head of the bone insertion plug is configured as an arc-shaped head.

6. The tibial osteotomy correction guide and fixation device according to claim 1, characterized in that: The inner side surface of the fixing guide plate is the same as the surface of the bone after correction, and fixing nail holes are arranged on the fixing guide plate.

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