Hockey stick-shaped steel plate

Abstract

The utility model relates to the technical field of medical instruments, and discloses a hockey rod-like steel plate which is used for fixing tibia and comprises an extension section, a turning section and a bending section, the turning section is of a curved structure with a corner, one end of the turning section is connected with the extension section, the extension section extends in the vertical direction, a fixing part is arranged on the extension section, and the bending section is of a curved structure with a corner. The steel plate is fixed on the tibia; the other end of the turning section is connected with the bending section, the bending section extends in a surrounding mode along the peripheral side of the tibia in the horizontal direction, the bending section is of an arc-shaped structure with a curved surface, and an adjusting part is arranged on the bending section so that the bending section can be attached to the tibia. The steel plate is attached to the anatomical structure of the inner side of the proximal tibia, and through the hockey rod-like design and the shaping characteristic, the dependence of an operation on an accurate body position is reduced, and the operation difficulty is reduced; the steel plate penetrates through the goose foot tendon to be placed, so that damage to the medial collateral ligament and the goose foot tendon is avoided, and the risk that the knee joint is unstable after operation is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a hockey stick template steel plate. Background Technology

[0002] Tibial plateau fractures, especially Schatzker IV-VI types, involve the weight-bearing area of ​​the knee joint, making their treatment highly complex. Current treatment methods primarily involve screw fixation with multiple plates, which, while widely used in practice, have significant drawbacks:

[0003] (1) The high dependence of the surgery on precise positioning increases the difficulty of the surgery;

[0004] (2) Multiple surgical approaches and the use of plates increase surgery-related soft tissue damage;

[0005] (3) These factors together lead to prolonged operation time, increased recovery period and increased risk of surgical complications.

[0006] Therefore, there is an urgent need for a hockey stick-shaped steel plate to reduce the difficulty of surgery and the risk of complications. Summary of the Invention

[0007] In view of the above-mentioned problems in the prior art, the purpose of this application is to reduce the difficulty of surgery and the risk of complications when performing tibial plateau fracture surgery.

[0008] To address the aforementioned problems, this application provides a hockey stick-shaped steel plate for fixing the tibia. The steel plate includes an extension section, a turning section, and a curved section. The turning section is a curved structure with an angle. One end of the turning section is connected to the extension section, which extends vertically and has a fixing part to fix the steel plate to the tibia. The other end of the turning section is connected to the curved section, which extends horizontally around the circumference of the tibia. The curved section is an arc-shaped structure with a curved surface and has an adjustment part to allow the curved section to conform to the tibia.

[0009] Preferably, the adjustment part is a universal joint, and there are multiple universal joints arranged at intervals along the extension direction of the curved section.

[0010] The curved section has a curved structure, and the edge of the curved section and the inner diameter of each universal hole form a sequentially connected ring structure.

[0011] Preferably, the radial dimension of the curved section at the universal joint is equal to the cross-sectional width of the extended section.

[0012] Preferably, the adjustment part is a universal joint, and a connector passes through the universal joint and connects to the tibia.

[0013] The universal joint includes multiple adjustment holes, which are arranged equidistantly along the periphery of the universal joint. The inner diameter of each adjustment hole is adapted to the outer diameter of the connector to adjust the setting angle of the connector relative to the universal joint.

[0014] Preferably, the connector can pass through the adjustment hole, such that the extension direction of the connector within the adjustment hole has an angle range of 25°-35° with the central axis of the universal joint.

[0015] Preferably, the universal joint further includes a fixed inclined surface, which is an expansion structure that gradually expands from the inside to the outside. The fixed inclined surface is sandwiched between adjacent adjustment holes to limit the position of the connector.

[0016] Preferably, the extension segment is also an arc-shaped structure with a curved surface, the extension segment has a curved smooth surface, and the angle of the smooth surface is in the range of 120°-170°.

[0017] Preferably, a groove is provided on the outer edge of the turning segment;

[0018] The grooves are provided on the upper and lower sides of the turning section.

[0019] Preferably, the fixing hole includes a small hole and a large hole, the small hole and the large hole are connected in a vertical direction, and the inner diameter of the small hole is smaller than the inner diameter of the large hole.

[0020] Preferably, the end of the extension segment away from the turning segment has a chamfer;

[0021] The chamfer is provided on both the inner and outer sides of the extension section.

[0022] Based on the above technical solution, the hockey stick sample steel plate described in this application has the following beneficial effects:

[0023] In this application, the plate conforms to the anatomical structure of the proximal medial tibia and, through its hockey stick-like design and malleable properties, reduces the reliance on precise positioning during surgery, simplifies the surgical procedure, and lowers the difficulty of the operation. Furthermore, the plate is placed through the pes anserine tendon, reducing stimulation to soft tissues, especially interference with the pes anserine tendon and tibial collateral ligament, thus reducing the risk of postoperative knee instability and facilitating early knee joint movement after surgery. Additionally, the optimized design of the plate simplifies the surgical procedure, reducing operation time, blood loss, and the risk of surgical complications such as infection and internal fixation failure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the hockey stick sample steel plate provided in the embodiments of this application.

[0026] Figure 2 This is a top view of the hockey stick sample steel plate provided in the embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the structure of the curved segment provided in the embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the universal joint on the curved section provided in the embodiment of this application.

[0029] Figure 5 This is a cross-sectional view of the universal joint hole on the curved section provided in the embodiment of this application.

[0030] Figure 6 This is a schematic diagram of the structure of the extension segment provided in the embodiments of this application.

[0031] Figure 7 This is a schematic diagram of the structure of the fixing hole on the extension end section provided in the embodiment of this application.

[0032] Figure 8 This is a schematic diagram of the overall structure of the hockey stick sample steel plate after assembly, provided in the embodiments of this application, from a first-view perspective.

[0033] Figure 9 This is a schematic diagram of the overall structure of the hockey stick sample steel plate after assembly, provided in an embodiment of this application, from a second perspective.

[0034] Figure 10 This is a schematic diagram of the structure of the curved section assembly connector provided in the embodiment of this application.

[0035] Figure 11 This is a schematic diagram of the structure of the extension section after the screws are assembled, as provided in the embodiment of this application.

[0036] The reference numerals in the attached drawings are as follows: steel plate 100; extension section 11, fixing hole 111, small hole 112, large hole 113, chamfer 114; turning section 12, groove 121; bending section 13, universal hole 131, adjusting hole 132, fixing inclined surface 133; connector 200. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0039] like Figures 1-10 As shown, this application discloses a hockey stick-shaped steel plate 100 for fixing the tibia during medial tibial plateau surgery.

[0040] The steel plate 100 in this application includes an extension section 11, a turning section 12, and a bending section 13. The turning section 12 is a curved structure with a corner. One end of the turning section 12 is connected to the extension section 11. The extension section 11 extends in the vertical direction and has a fixing part so that the steel plate 100 can be fixed to the tibia. The other end of the turning section 12 is connected to the bending section 13. The bending section 13 extends around the circumference of the tibia in the horizontal direction. The bending section 13 is an arc-shaped structure with a curved surface and has an adjustment part so that the bending section 13 can fit against the tibia.

[0041] It is understood that the bent segment in this application can extend in a horizontal plane, which includes multiple extension directions, so that the bent segment forms an arc-shaped structure that can extend around the tibia, increasing the contact area between the bent segment 13 and the tibia, and allowing it to fit better with the tibia.

[0042] In this embodiment, the extension segment 11 extends vertically and the bending segment extends horizontally, so that the entire steel plate 100 forms an inverted L-shaped structure.

[0043] It is understandable that the transition segment 12 is positioned between the extension segment 11 and the bending segment, serving as a transitional element; the transition segment 12 in this application is crescent-shaped with a corner, to ensure that the steel plate 100 can better adapt to the shape of the tibia.

[0044] Therefore, in this application, the plate 100 conforms to the anatomical structure of the proximal medial tibia, and through its hockey stick-like design and malleable properties, it reduces the reliance on precise positioning during surgery, simplifies the surgical procedure, and lowers the difficulty of the surgery. Furthermore, the plate 100 is placed through the pes anserine tendon, reducing stimulation to soft tissues, especially interference with the pes anserine tendon and tibial collateral ligament, thus reducing the risk of postoperative knee instability and facilitating early knee joint movement after surgery. In addition, the optimized design of the plate 100 simplifies the surgical procedure, reduces surgical time, decreases blood loss, and lowers the risk of surgical complications such as infection and internal fixation failure.

[0045] like Figures 2-5 As shown, the adjustment part in this embodiment is a universal hole 131. There are multiple universal holes 131, and the multiple universal holes 131 are arranged at intervals along the extension direction of the curved section 13.

[0046] The curved section 13 has a curved structure, and the edge of the curved section 13 and the inner diameter of each universal hole 131 form a ring structure that is connected in sequence.

[0047] It is understood that the curved segment 13 in this application has a wavy edge with a curved shape. The edge shape of the curved segment is the same as the shape of the universal joint 131, so that each universal joint 131 can form a ring structure with the edge of the curved segment 13. However, the universal joints 131 are also interconnected, as can be seen in the details. Figure 2 The top view in the image.

[0048] In this embodiment, the extension segment 11, the turning segment 12, and the bending segment 13 are integrally formed. This design avoids potential weaknesses at the connection points of the various parts of the steel plate 100, improves the overall strength and stability of the steel plate 100, and enhances its fixation effect with the tibia. Furthermore, the integrally formed structure eliminates the need to connect multiple steel plates, simplifying the surgical procedure and shortening the surgical time. In addition, the integrally formed structure can also reduce the processing steps in the manufacturing process.

[0049] Therefore, by adopting the above-mentioned structural form, the wavy curve structure can better conform to the anatomical shape of the tibia, especially the complex curvature of the medial side of the tibia, thereby increasing the contact area between the plate 100 and the bone surface and enhancing fixation stability. Secondly, the ring structure can effectively disperse stress, avoiding stress concentration at the contact point between the plate 100 and the bone surface, and reducing the risk of plate 100 fracture. Furthermore, the curved segment 13 of the ring structure can also effectively resist the rotation of the plate 100 on the bone surface, enhancing anti-rotation ability and preventing displacement of fracture fragments.

[0050] Preferably, the radial dimension of the bent section 13 at the universal hole 131 is equal to the cross-sectional width of the extension section 11. This ensures that the overall dimensions of the entire steel plate 100 are consistent. Consistent overall dimensions can prevent stress concentration at the connection of the steel plate 100, thereby improving the overall strength and stability of the steel plate 100 and enhancing the fixing effect.

[0051] like Figures 8-11 As shown, this application connects to the tibia via a connector 200 that passes through the universal joint 131. The universal joint 131 includes multiple adjustment holes 132, which are arranged equidistantly along the periphery of the universal joint 131. The inner diameter of the adjustment holes 132 is adapted to the outer diameter of the connector 200 to adjust the setting angle of the connector 200 relative to the universal joint 131.

[0052] In this embodiment of the application, the connector 200 refers to a screw.

[0053] It is understood that each adjustment hole 132 is a through hole, and the adjustment holes 132 are evenly distributed around the universal joint 131. In the embodiment of this application, there are three adjustment holes 132, which form a triangle to facilitate the adjustment of the position of the connector 200 within the universal joint 131. In this way, the connector 200, after passing through the universal joint 131, can form a raft-like distribution, which can effectively support the joint surface.

[0054] Therefore, by adopting the above-described structural form, the design of the adjustment hole 132 allows the surgeon to select the optimal screw angle based on the specific location and shape of the fracture fragments, achieving precise fixation and preventing screws from interfering with each other or entering the joint. This improves the flexibility of the surgical procedure, allowing the surgeon to adjust the screw angle at any time according to the specific situation during the operation, adapting to different fracture types and individual differences. Simultaneously, precise screw angle adjustment can avoid damage to surrounding soft tissues, reducing the risk of postoperative pain and complications.

[0055] like Figures 9-10As shown, the connector 200 can pass through the adjustment hole 132, so that the angle α between the extension direction of the connector 200 in the adjustment hole 132 and the central axis of the universal hole 131 has a range of 25°-35°.

[0056] In the embodiments of this application, the included angle α is preferably 30°.

[0057] Therefore, by adopting the above-mentioned structural form, the included angle α in the range of 25°-35° provides a larger angle adjustment range than the traditional fixation method, which allows doctors to select the optimal screw angle according to the specific location and shape of the fracture fragments, so as to achieve more precise fixation.

[0058] Preferably, the universal joint 131 further includes a fixed inclined surface 133, which is an expansion structure that gradually expands from the inside to the outside. The fixed inclined surface 133 is sandwiched between adjacent adjustment holes 132 to limit the connection 200.

[0059] It is understandable that the inner diameter enclosed by the fixed inclined plane 133 is adapted to the end size of the connector 200 so as to limit and fix the connector 200.

[0060] This design allows the fixed inclined surface 133 to effectively limit the range of motion of the connector 200 (screw) within the universal hole 131, preventing the screw from shifting or loosening and improving the stability of the connector 200.

[0061] like Figure 6 As shown, the extension segment 11 is also an arc-shaped structure with a curved surface. The extension segment 11 has a curved smooth surface, and the rotation angle β of the smooth surface is in the range of 120°-170°.

[0062] It is understood that the extension segment 11 in this application is preferably extended only in one vertical direction, that is, it is a plate-like structure with a curved and smooth surface.

[0063] Therefore, the bending angle β, between 145° and 180°, allows the extension segment 11 to better conform to the curvature of the proximal tibia and make closer contact with the tibial surface, thereby improving fixation stability. Secondly, the smooth arc design avoids irritation and damage to the surrounding soft tissues by the extension segment 11, reducing the risk of postoperative pain and complications.

[0064] In other embodiments, the angle of rotation β can be adjusted according to the situation, and the position of rotation β can also be adjusted based on the actual situation, not limited to the present application. Figure 6 The location shown.

[0065] like Figure 1As shown, a groove 121 is provided on the outer edge of the transition section 12; the groove 121 is provided on the upper and lower sides of the transition section 12.

[0066] It is understood that the grooves 121 are provided at both ends of the turning section 12 along the height direction of the steel plate 100.

[0067] The design of the groove 121 not only better adapts to the tibial structure, but also reduces the pressure of the steel plate 100 on the surrounding tissues, improves local blood circulation, and promotes postoperative recovery.

[0068] like Figures 6-7 As shown, the extension section 11 is provided with a plurality of fixing holes 111, which are arranged sequentially at intervals along the extension direction of the extension section 11; each fixing hole 111 includes a small hole 112 and a large hole 113, which are connected in the vertical direction, that is, intersecting vertically, and the inner diameter of the small hole 112 is smaller than the inner diameter of the large hole 113.

[0069] In this embodiment of the application, the small hole 112 is disposed above the large hole 113, and the small hole 112 and the large hole 113 have at least a partial overlap.

[0070] In this embodiment of the application, there are five fixing holes 111 and four universal holes 131, for use with 3.5mm cortical bone screws, 3.5mm locking screws and 4.0mm cancellous bone screws.

[0071] In this embodiment, the fixing hole 111 is a locking and pressurizing connection hole, and the locking or pressurizing fixing method can be flexibly selected according to the situation during the operation.

[0072] The inner diameters of the small holes 112 and large holes 113 in each fixation hole 111 can be set as needed, and there are no restrictions here, as long as they can satisfy the fixation of the tibia of the steel plate 100.

[0073] Therefore, by adopting the above-mentioned structural form, doctors can choose different fixation methods, such as locking screws and compression screws, according to the fracture type and the patient's specific condition, thereby achieving a more personalized fixation plan. Specifically, the large hole 113 can accommodate the compression screw to achieve compression fixation of the fracture fragments, enhance fixation stability, and promote fracture healing; the small hole 112 can accommodate the locking screw to achieve angular stability fixation of the fracture fragments, while allowing the screw to be adjusted within a certain angle range, improving the flexibility of surgical operation.

[0074] like Figure 7 As shown, the end of the extension section 11 away from the turning section 12 is provided with a chamfer 114, i.e., a cutting design; preferably, the chamfer 114 is provided on the inner and outer sides of the extension section 11.

[0075] It is understood that the inner and outer sides refer to the radial direction perpendicular to the vertical direction, that is, the side of the steel plate 100 facing the tibia in the horizontal direction is the inner side, and the side away from the tibia is the outer side.

[0076] Therefore, the above-mentioned structural form and the chamfer 114 design facilitate minimally invasive insertion, reduce the resistance of the steel plate 100 to soft tissue during insertion, facilitate the placement of the steel plate 100, and reduce the difficulty of the operation.

[0077] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A hockey stick-shaped steel plate for fixing the tibia, characterized in that, The steel plate includes an extension section, a turning section, and a curved section. The turning section is a curved structure with an angle. One end of the turning section is connected to the extension section. The extension section extends vertically and has a fixing part, so that the steel plate is fixed to the tibia. The other end of the turning section is connected to the curved section. The curved section extends horizontally around the circumference of the tibia. The curved section is an arc-shaped structure with a curved surface and has an adjustment part, so that the curved section can fit snugly against the tibia.

2. The hockey stick template steel plate according to claim 1, characterized in that, The adjustment part is a universal joint, and there are multiple universal joints arranged at intervals along the extension direction of the curved section. The curved section has a curved structure, and the edge of the curved section and the inner diameter of each universal hole form a sequentially connected ring structure.

3. The hockey stick template steel plate according to claim 2, characterized in that, The radial dimension of the curved section at the universal joint is equal to the cross-sectional width of the extended section.

4. The hockey stick template steel plate according to claim 1, characterized in that, The adjustment part is a universal joint, and is connected to the tibia by a connector passing through the universal joint; The universal joint includes multiple adjustment holes, which are arranged equidistantly along the periphery of the universal joint. The inner diameter of each adjustment hole is adapted to the outer diameter of the connector to adjust the setting angle of the connector relative to the universal joint.

5. The hockey stick template steel plate according to claim 4, characterized in that, The connector can pass through the adjustment hole, such that the extension direction of the connector within the adjustment hole has an angle range of 25°-35° with the central axis of the universal joint.

6. The hockey stick template steel plate according to claim 4, characterized in that, The universal joint also includes a fixed inclined surface, which is an expansion structure that gradually expands from the inside to the outside. The fixed inclined surface is sandwiched between adjacent adjustment holes to limit the position of the connector.

7. The hockey stick template steel plate according to claim 1, characterized in that, The extension segment is also an arc-shaped structure with a curved surface, and the extension segment has a curved smooth surface with a rotation angle between 120° and 170°.

8. The hockey stick template steel plate according to claim 1, characterized in that, The outer edge of the turning segment is provided with a groove; The grooves are provided on the upper and lower sides of the turning section.

9. The hockey stick template steel plate according to claim 1, characterized in that, The extension section is provided with a plurality of fixing holes, including small holes and large holes, the small holes and the large holes being connected in a vertical direction, and the inner diameter of the small holes being smaller than the inner diameter of the large holes.

10. The hockey stick template steel plate according to claim 1, characterized in that, The end of the extension segment away from the turning segment is chamfered; The chamfer is provided on both the inner and outer sides of the extension section.

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