Tibia osteotomy guide plate
By designing a tibial osteotomy guide plate including base block, horizontal guide block, vertical guide block, platform strap, limiting part and platform surface pressing tablet, the problem of insufficient fit of positioning guide plate is solved, and the further improvement is achieved High accuracy and stability reduce clinical accidents and simplify operations.
Patent Information
- Application Number
- CN202420546632.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-03-20
AI Technical Summary
In the prior art, the stability of positioning guide plate fitting is insufficient, resulting in insufficient osteotomy and installation accuracy during unicondylar knee arthroplasty, and complications are prone to occur, such as sterile loosening, periprosthetic fractures, etc.
A tibial osteotomy guide plate was designed, including base blocks, horizontal guide blocks, vertical guide blocks, platform brackets, limit parts and platform surface compression plates. Through the precise positioning and structural design of these components, the guide plate is improved. Combined stability and accuracy.
It achieves more precise positioning and stability, can accurately control the amount of vertical tibial osteotomy, avoid abnormal internal and external osteotomy, reduce clinical accidents, and simplify the doctor's operating procedures.
Smart Images
Figure CN222516929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to a tibial osteotomy guide plate. Background Art
[0002] Unicompartmental knee arthroplasty (UKA) is a partial knee replacement that replaces or re-repairs only a portion of the patient's knee to relieve severe discomfort caused by arthritis and degeneration of the lateral or medial condylar cartilage of the knee. The precision required for unicompartmental knee replacement is relatively high, and the most common complications are aseptic loosening, polyethylene liner wear, polyethylene liner dislocation, contralateral osteoarthritis, periprosthetic fracture (tibial side, femoral side), and damaged collateral ligaments and cruciate ligaments. There are many reasons for these complications, one of which is the lack of accuracy in osteotomy and installation.
[0003] Therefore, doctors usually use positioning guides to assist surgery, but the stability of the positioning guides in actual applications needs to be improved. Utility Model Content
[0004] The utility model aims to provide a tibial osteotomy guide plate, so as to solve the technical problem that the stability of the positioning guide plate fitting in the prior art needs to be improved to a certain extent.
[0005] The utility model provides a tibial osteotomy guide plate, comprising: a base block, the distal side of the base block is provided with a tibial anterior fitting surface; a horizontal guide block fixed to the upper part of the base block; a horizontal guide groove is provided on the horizontal guide block; a vertical guide block fixed to the horizontal guide block; a vertical guide groove is provided on the vertical guide block, and the vertical guide groove extends to the horizontal guide block; a platform bracket is fixed to the distal end of the horizontal guide block; a tibial platform fitting surface is provided at the bottom of the platform bracket; a limiting member is provided on the side of the platform bracket and close to the front end of the platform bracket; in the width direction of the horizontal guide block, the vertical guide block and the limiting member are respectively located on both sides of the horizontal guide block.
[0006] During use of the tibial osteotomy guide provided by the utility model, the tibial osteotomy guide is placed on the bone surface, the internal rotation state of the vertical tibial osteotomy is determined, the tibial plateau fitting surface is fitted and positioned with the tibial plateau bone surface feature, the anterior tibial fitting surface is fitted and positioned with the anterior tibial bone surface feature, and the wider anterior tibial fitting surface can ensure the stability of the tibial varus and valgus; the limiter is used to clamp on the outside of the tibia to position the tibial osteotomy guide, which increases the stability of the tibial osteotomy guide fitting and can limit the position of the tibial osteotomy guide in the left and right directions of the tibia (it can be understood that the proximal and distal directions are the front-to-back directions, and the left and right directions are the directions perpendicular to the front-to-back directions), thereby limiting the amount of vertical tibial osteotomy and preventing abnormalities in the amount of internal and external osteotomy.
[0007] Therefore, the tibial osteotomy guide provided by the utility model can achieve more accurate positioning, higher stability, and can also accurately vertically cut the amount of osteotomy. The tibial osteotomy guide can avoid doctors' barehanded operation and reduce clinical accidents. The tibial osteotomy guide is simple and practical, greatly shortening the learning curve of doctors.
[0008] Furthermore, the tibial osteotomy guide plate also includes a platform surface pressing plate, which is arranged at the front end of the platform lever.
[0009] The platform surface pressure piece can be inserted between the tibial plateau and the posterior femoral condyle in the flexed state, and the stability of the posterior tilt of the tibial osteotomy can be ensured through the pressure of the posterior femoral condyle, thereby further improving the stability and reliability of the tibial osteotomy guide.
[0010] Furthermore, a leading-in slope is provided at the distal end of the platform surface pressing sheet; in the width direction of the platform surface pressing sheet, the leading-in slope extends from one side of the platform surface pressing sheet to the other side of the platform surface pressing sheet.
[0011] Furthermore, the upper surface and the lower surface of the platform surface pressing sheet are both provided with the introduction slope.
[0012] Furthermore, the width of the platform surface pressing sheet is smaller than the width of the platform support.
[0013] Furthermore, the limiting member is a limiting block.
[0014] Furthermore, the limit block includes: a transverse block, one end of which is connected to the platform bracket; and a vertical block, which is connected to the other end of the transverse block.
[0015] Furthermore, the limit block also includes a transition block, and the transition block is connected between the horizontal block and the vertical block; the wall of the limit block away from the platform ledge is arranged in an inclined surface.
[0016] Furthermore, in the direction from the transverse block to the transition block, the outer wall of the transition block and the outer wall of the vertical block are arranged flush; a step is formed between the wall of the transition block connected to the vertical block and the vertical block.
[0017] Furthermore, the upper surface of the horizontal guide block is provided with a tibial crest indication mark; the platform support is provided with an observation port; the proximal wall of the base block is provided with a fixing hole; and the proximal wall of the base block is also provided with a guide plate pressing indication area.
[0018] It should be understood that both the foregoing general description and the following specific embodiments are for the purpose of example and illustration and do not necessarily limit the present disclosure. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate the subject matter of the present disclosure. At the same time, the specification and the drawings are used to explain the principles of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 This is a schematic structural diagram of a tibial osteotomy guide plate from a first perspective according to an embodiment of the utility model;
[0021] Figure 2 for Figure 1 A second perspective structural diagram of the tibial osteotomy guide shown;
[0022] Figure 3 for Figure 1 A third-view structural diagram of the tibial osteotomy guide shown;
[0023] Figure 4 It is a structural schematic diagram of the tibial osteotomy guide plate of the embodiment of the utility model when it is specifically used from a first perspective;
[0024] Figure 5 for Figure 4 The structural schematic diagram of the tibial osteotomy guide from a second perspective during specific application is shown.
[0025] Icons: 1-base block; 2-horizontal guide block; 3-vertical guide block; 4-platform bracket; 5-platform surface pressure plate; 6-limiting piece; 7-guide plate mark; 8-tibia; 11-anterior tibial fitting surface; 12-fixing hole; 13-guide plate pressing indicator area; 21-horizontal guide groove; 22-tibial crest indicator mark; 31-vertical guide groove; 41-tibial plateau fitting surface; 42-observation port; 51-introduction slope; 61-lateral block; 62-vertical block; 63-transition block. DETAILED DESCRIPTION
[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.
[0027] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.
[0028] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.
[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] It should be noted that, in the embodiments of the present invention, “far” refers to the side away from the user, and “near” refers to the side close to the user.
[0032] like Figures 1 to 5 As shown, the utility model provides a tibial osteotomy guide plate, comprising: a base block 1, a tibial anterior fitting surface 11 is provided on the distal side of the base block 1; a horizontal guide block 2, fixed to the upper part of the base block 1; a horizontal guide groove 21 is provided on the horizontal guide block 2, and the operator can perform horizontal osteotomy along the horizontal guide groove 21; a vertical guide block 3, fixed on the horizontal guide block 2; a vertical guide groove 31 is provided on the vertical guide block 3, and the vertical guide groove 31 extends to the horizontal guide block 2, and vertical osteotomy is performed along the vertical guide groove 31; a platform bracket 4, fixed to the distal end of the horizontal guide block 2; a tibial platform fitting surface 41 is provided at the bottom of the platform bracket 4; a limiter 6 is arranged on the side of the platform bracket 4 and close to the front end of the platform bracket 4; in the width direction of the horizontal guide block 2, the vertical guide block 3 and the limiter 6 are respectively located on both sides of the horizontal guide block 2.
[0033] During the use of the tibial osteotomy guide provided in the present embodiment, the tibial osteotomy guide is placed on the bone surface, the internal rotation state of the vertical osteotomy of the tibia 8 is determined, the tibial plateau fitting surface 41 is fitted and positioned with the bone surface feature of the tibial plateau 8, and the anterior tibial fitting surface 11 is fitted and positioned with the bone surface feature of the anterior tibial 8. The wider anterior tibial fitting surface 11 can ensure the stability of the inside and outside rotation of the tibia 8; the limiter 6 is used to be clamped on the outside of the tibia 8 to position the tibial osteotomy guide, which increases the stability of the tibial osteotomy guide fitting, and at the same time can limit the position of the tibial osteotomy guide in the left and right direction of the tibia 8 (it can be understood that the proximal and distal direction is the front-to-back direction, and the left and right direction is the direction perpendicular to the front-to-back direction), thereby limiting the vertical osteotomy amount of the tibia 8 and preventing abnormal internal and external osteotomy amounts.
[0034] Therefore, the tibial osteotomy guide provided in this embodiment can achieve more accurate positioning, higher stability, and can also accurately determine the amount of vertical osteotomy. The tibial osteotomy guide can avoid doctors' barehanded operation and reduce clinical accidents. The tibial osteotomy guide is simple and practical, greatly shortening the learning curve of doctors.
[0035] like Figure 1 , Figure 3 and Figure 4 As shown, based on the above embodiment, the tibial osteotomy guide plate further includes a platform surface pressing plate 5, which is arranged at the front end of the platform lever 4 and is used to be embedded in the gap between the tibial platform 8 and the posterior condyle of the femur.
[0036] In this embodiment, the platform surface pressing plate can be inserted between the tibial plateau and the posterior femoral condyle in the flexed state. The pressure of the posterior femoral condyle can ensure the stability of the posterior tilt of the tibial osteotomy, further improving the stability and reliability of the tibial osteotomy guide.
[0037] like Figure 1 , Figure 3 and Figure 4 As shown, a leading-in slope 51 is provided at the distal end of the platform surface pressing sheet 5 ; in the width direction of the platform surface pressing sheet 5 , the leading-in slope 51 extends from one side of the platform surface pressing sheet 5 to the other side of the platform surface pressing sheet 5 .
[0038] In this embodiment, an introduction slope 51 is set at the distal end of the platform surface pressure plate, so as to facilitate the distal end of the platform surface pressure plate (first inserted between the tibial plateau 8 and the posterior femoral condyle gap) to be inserted more easily into the tibial plateau 8 and the posterior femoral condyle gap.
[0039] The introduction slope 51 may be provided on the upper wall of the platform surface pressure plate, or the introduction slope 51 may be provided on the lower wall of the platform surface pressure plate.
[0040] As an alternative, Figure 1 , Figure 3 and Figure 4As shown, both the upper and lower surfaces of the platform surface pressing plate 5 are provided with an introduction slope 51, so that the distal end of the platform surface pressing plate 5 can be more easily inserted into the gap between the tibial plateau 8 and the posterior condyle of the femur.
[0041] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, the width of the platform surface pressing sheet 5 is smaller than the width of the platform support 4, and the specific width of the platform surface pressing sheet 5 can be set according to specific needs.
[0042] There may be multiple platform surface pressing sheets 5 , and the multiple platform surface pressing sheets 5 are arranged at intervals along the width direction of the horizontal guide block 2 .
[0043] As an optional solution, the number of the platform surface pressing sheet 5 is one, which is convenient for processing.
[0044] The limiting member 6 may be a limiting rod or a limiting frame.
[0045] As an alternative, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the limiting member 6 is a limiting block, which has good strength and is easy to clean.
[0046] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, based on the above embodiment, further, the limit block includes: a horizontal block 61, one end of which is connected to the platform bracket 4; and a vertical block 62, which is connected to the other end of the horizontal block 61.
[0047] In this embodiment, a right angle can be formed between the transverse block 61 and the vertical block 62, which is convenient for processing and convenient for clamping on the outer side of the tibia 8.
[0048] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, based on the above embodiment, further, the limit block also includes a transition block 63, and the transition block 63 is connected between the horizontal block 61 and the vertical block 62; the wall of the limit block away from the platform 4 is set in an inclined surface.
[0049] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in the direction from the transverse block 61 to the transition block 63 , the outer wall of the transition block 63 and the outer wall of the vertical block 62 are arranged flush; a step is formed between the wall of the transition block 63 connected to the vertical block 62 and the vertical block 62 .
[0050] Furthermore, a guide plate mark 7 may be provided on the vertical guide block 3 to mark information of the guide plate.
[0051] like Figures 1 to 5 As shown, based on the above embodiment, further, a tibial crest indicator mark 22 is provided on the upper surface of the horizontal guide block 2; an observation port 42 is provided on the platform bracket 4 (the observation port 42 can be in the shape of a long strip); a fixing hole 12 is provided on the proximal wall of the base block 1; a guide plate pressing indication area 13 is also provided on the proximal wall of the base block 1, and an arrow or a plurality of arc shapes as shown in the figure can be set to indicate the pressing direction.
[0052] In this embodiment, accurate personalized customization is achieved. Through the information of the guide plate identification 7, the applicable object of the guide plate is matched. According to the tibial 8 crest guide block, the approximate position of the tibial osteotomy guide plate on the bone surface is quickly found, and the internal rotation state of the vertical osteotomy of the tibia 8 is determined. Through the anterior tibial fitting surface 11, the wider anterior tibial fitting surface 11 ensures the stability of the internal and external eversion of the tibia 8. At the same time, an observation port 42 for auxiliary observation of the fitting condition is provided to facilitate observation of the fitting condition of the tibial 8 platform; the platform surface pressing plate 5 can be inserted between the tibial 8 platform and the posterior femoral condyle in the flexion state, and the pressure of the posterior femoral condyle can ensure the stability of the posterior tilt of the tibial osteotomy 8; the limiter 6 increases the stability of the guide plate's fitting, and at the same time can limit the amount of vertical osteotomy of the tibia 8 to prevent abnormal internal and external osteotomy. By pressing the tibial osteotomy guide plate in the direction indicated by the guide plate pressing indication area 13, the fitting surface of the tibial osteotomy guide plate can be closely fitted with the front side of the tibia 8 and the tibial platform 8, and fixing nails are inserted into the fixing holes 12 in sequence to complete horizontal and vertical osteotomies along the osteotomy groove.
[0053] It is understandable that the tibial osteotomy guide plate can connect multiple components together by fasteners, clamping or welding. Optionally, the tibial osteotomy guide plate can be formed by 3D printing to reduce the connection gap, which is more beneficial to the patient.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In the description provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means being within the scope of the utility model and forming different embodiments.
Claims
1. A tibial osteotomy guide plate, characterized in that: include: A base block, wherein the distal side of the base block is provided with an anterior tibia fitting surface; A horizontal guide block is fixed on the upper part of the base block; the horizontal guide block is provided with a horizontal guide groove; A vertical guide block is fixed on the horizontal guide block; a vertical guide groove is provided on the vertical guide block, and the vertical guide groove extends to the horizontal guide block; A platform support is fixed to the distal end of the horizontal guide block; the bottom of the platform support is provided with a tibial plateau fitting surface; The limiting member is arranged on the side of the platform frame and close to the front end of the platform frame; in the width direction of the horizontal guide block, the vertical guide block and the limiting member are respectively located on both sides of the horizontal guide block.
2. The tibial osteotomy guide according to claim 1, characterized in that: The tibial osteotomy guide plate further comprises: The platform surface pressing sheet is arranged at the front end of the platform support.
3. The tibial osteotomy guide according to claim 2, characterized in that: The distal end of the platform surface pressing sheet is provided with an introduction slope; In the width direction of the platform surface pressing sheet, the introduction slope extends from one side of the platform surface pressing sheet to the other side of the platform surface pressing sheet.
4. The tibial osteotomy guide plate according to claim 3, characterized in that: The upper surface and the lower surface of the platform surface pressing sheet are both provided with the introduction inclined surface.
5. The tibial osteotomy guide according to claim 2, characterized in that: The width of the platform surface pressing sheet is smaller than the width of the platform support.
6. The tibial osteotomy guide according to any one of claims 1 to 5, characterized in that: The limiting component is a limiting block.
7. The tibial osteotomy guide according to claim 6, characterized in that: The limit block comprises: A transverse block, one end of which is connected to the platform bracket; A vertical block is connected to the other end of the horizontal block.
8. The tibial osteotomy guide according to claim 7, characterized in that: The limit block also includes a transition block, which is connected between the transverse block and the vertical block; the wall of the limit block away from the platform ledge is arranged in an inclined surface.
9. The tibial osteotomy guide according to claim 8, characterized in that: In the direction from the transverse block to the transition block, the outer wall of the transition block is flush with the outer wall of the vertical block; A step is formed between the wall of the transition block connected to the vertical block and the vertical block.
10. The tibial osteotomy guide according to claim 1, characterized in that: The upper surface of the horizontal guide block is provided with a tibial crest indication mark; The platform is provided with an observation port; A fixing hole is provided on the proximal wall of the base block; A guide plate pressing indicating area is also provided on the proximal wall of the base block.