Osteotomy guide plate and osteotomy guide assembly

Abstract

The invention provides an osteotomy guide plate and an osteotomy guide assembly, the osteotomy guide plate comprises a main body part, a switching part and a lateral part, the main body part is provided with an inner surface and an outer surface which are oppositely arranged, and a near end surface arranged between the inner surface and the outer surface, and the main body part is provided with a transverse osteotomy groove penetrating through the inner surface and the outer surface; the adapter part is connected to one end of the main body part, the lateral part is connected to one end, away from the main body part, of the adapter part, the lateral part is provided with an inner side facing the main body part and an outer side away from the main body part, and the lateral part is provided with a vertical osteotomy groove penetrating through the inner side and the outer side. The osteotomy guide assembly comprises the osteotomy guide plate, a first distraction block and a second distraction block. After osteotomy is conducted through guiding of the transverse osteotomy groove and the vertical osteotomy groove, the first osteotomy seam and the second osteotomy seam which are communicated with each other are formed in the near end of the tibia, correction of the force line of the tibia of a patient and adjustment of a sunk tibia platform can be achieved, and therefore the osteotomy device can be suitable for the tibia near-end combined osteotomy operation.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and more specifically, relates to an osteotomy guide plate and an osteotomy guide assembly. Background Art

[0002] At present, there are three types of tibial osteotomy: high tibial osteotomy (HTO), medial tibial condylar osteotomy (TCVO) and combined proximal tibial osteotomy (CPTO). Among them, HTO is an extra-articular osteotomy surgery, which is mainly used to correct extra-articular deformities. TCVO is an intra-articular osteotomy surgery, which is mainly used to correct intra-articular deformities. CPTO is based on HTO and uses a surgical method similar to TCVO between the proximal tibial condyles, which can correct both intra-articular and extra-articular deformities.

[0003] The osteotomy guide is an auxiliary tool for tibial osteotomy. When using the osteotomy guide for tibial osteotomy, the osteotomy position, correction angle, and osteotomy depth are usually designed first through electronic computed tomography (CT) data, and then the osteotomy is performed. The osteotomy guide is fitted to the patient's tibia, and the osteotomy position is exposed through the osteotomy groove on the osteotomy guide. The osteotomy knife is used to pass through the osteotomy groove on the osteotomy guide to perform osteotomy at the position to be osteotomed. Then, a distractor is used to distract the osteotomy area so that the angle between the osteotomy segments on both sides of the osteotomy seam reaches the preset correction angle, and finally a fixation plate is used to fix the osteotomy area. However, the osteotomy guide can only perform frontal osteotomy guidance, and is mainly suitable for high tibial osteotomy. It cannot achieve articular surface osteotomy guidance and is not suitable for proximal tibial combined osteotomy. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an osteotomy guide plate and an osteotomy guide assembly to solve the technical problem that the osteotomy guide plate in the prior art can only perform frontal osteotomy guidance but cannot achieve articular surface osteotomy guidance.

[0005] To achieve the above-mentioned purpose, the first aspect of the present application provides an osteotomy guide plate, including a main body, a transition portion and a lateral portion, the main body having an inner surface and an outer surface arranged opposite to each other, and a proximal surface arranged between the inner surface and the outer surface, the main body being provided with a transverse osteotomy groove running through the inner surface and the outer surface; the transition portion is connected to one end of the main body, the transition portion extends from the outer surface to the inner surface and is protruding from the inner surface, the lateral portion is connected to one end of the transition portion away from the main body, the lateral portion has an inner side facing the main body and an outer side facing away from the main body, and the lateral portion is provided with a vertical osteotomy groove running through the inner side and the outer side.

[0006] The beneficial effect of the osteotomy guide provided by the present application is that: compared with the prior art, the present application connects the adapter to one end of the main body, and the adapter extends from the outer surface to the inner surface and is convexly arranged on the inner surface of the main body, and connects the lateral part to one end of the adapter away from the main body, so that the lateral part is bent relative to the main body. In this way, when the osteotomy guide is fixed on the tibia, the main body corresponds to the front side of the tibia, the lateral part corresponds to the tibial articular surface, the transverse osteotomy groove corresponds to the position to be osteotomized on the front side of the tibia, and the vertical osteotomy groove corresponds to At the osteotomy position of the tibial articular surface, after the osteotomy knife performs osteotomy through the guidance of the transverse osteotomy groove and the vertical osteotomy groove, the proximal end of the tibia is formed with a first osteotomy seam and a second osteotomy seam that penetrate each other, so that the proximal end of the tibia is divided into a first osteotomy segment, a second osteotomy segment and a third osteotomy segment that are connected in sequence. By pivoting the second osteotomy segment relative to the first osteotomy segment, the patient's tibial force line can be corrected, and by pivoting the third osteotomy segment relative to the second osteotomy segment, the sunken tibial platform can be adjusted, so that it can be suitable for proximal tibial combined osteotomy surgery.

[0007] Optionally, the osteotomy guide plate also includes a protruding portion, which is connected to one end of the main body near the adapter portion and protrudes from the proximal surface. The protruding portion is provided with an ascending osteotomy groove that penetrates from the outer surface to the inner surface and extends away from the proximal surface.

[0008] Optionally, the transverse osteotomy groove has a first end close to the transition portion and a second end away from the transition portion, and the first end is connected to one end of the ascending osteotomy groove.

[0009] Optionally, the osteotomy guide plate further comprises a fixing portion connected to the main body, the fixing portion is arranged on the proximal surface of the main body, and a first positioning hole is provided on the fixing portion.

[0010] Optionally, a first bone contact area is formed on the inner surface, and a second bone contact area is formed on the surface of the fixing portion facing the inner surface, and the second bone contact area is spaced apart from the first bone contact area.

[0011] Optionally, the osteotomy guide plate further comprises a pressing block connected to the adapter portion, wherein the pressing block protrudes from an upper surface of the adapter portion.

[0012] Optionally, the main body is provided with a second positioning hole configured for the Kirschner wire to pass through.

[0013] The second aspect of the present application provides an osteotomy guide assembly, comprising: an osteotomy guide plate as described in any of the above items and a first distraction block and a second distraction block, wherein the first distraction block is used to distract a first osteotomy joint formed by osteotomy through the transverse osteotomy groove, and the second distraction block is used to distract a second osteotomy joint formed by osteotomy through the vertical osteotomy groove.

[0014] Optionally, the first distraction block includes a handle, a verification part and a limit part, the limit part is arranged between the handle and the verification part, the verification part is used to verify the correction angle after osteotomy, the verification part has a first contact surface and a second contact surface set at a preset angle, the preset angle is equal to the correction angle, and the limit part protrudes from the first contact surface and / or the second contact surface.

[0015] Optionally, the first distraction block further comprises a positioning portion, which is disposed on the verification portion and is used to fit with the outer side surfaces of the two osteotomy segments after osteotomy.

[0016] Compared with the prior art, the osteotomy guide assembly provided by the present application adopts the above-mentioned osteotomy guide plate. After the osteotomy knife performs osteotomy through the guidance of the transverse osteotomy groove and the vertical osteotomy groove, the proximal end of the tibia is formed with a first osteotomy seam and a second osteotomy seam that penetrate each other, so that the proximal end of the tibia is divided into a first osteotomy segment, a second osteotomy segment and a third osteotomy segment that are connected in sequence. By pivoting the second osteotomy segment relative to the first osteotomy segment, the patient's tibial force line can be corrected, and by pivoting the third osteotomy segment relative to the second osteotomy segment, the sunken tibial platform can be adjusted, so that it can be suitable for proximal tibial combined osteotomy surgery, and of course it is also suitable for high tibial osteotomy. By setting the first distraction block, it is convenient to quickly distract the first osteotomy gap formed by osteotomy through the transverse osteotomy groove, effectively ensuring that the correction angle of the knee joint axis reaches a predetermined value; by setting the second distraction block to distract the second osteotomy gap formed by the vertical osteotomy groove, the distraction degree of the second osteotomy gap can be adjusted to a preset value, so that the angle between the second osteotomy segment and the first osteotomy segment reaches a preset correction angle, thereby achieving adjustment of the sunken tibial platform, which is beneficial to reducing the long operation time caused by repeatedly measuring the distraction degree of the first osteotomy gap and the second osteotomy gap, and is beneficial to improving the success rate of the operation and improving the patient's quality of life after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the osteotomy guide plate provided in one embodiment of the present application Figure 1 ;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the osteotomy guide plate provided in one embodiment of the present application Figure 2 ;

[0020] Figure 3 The use state of the osteotomy guide plate provided in one embodiment of the present application Figure 1 ;

[0021] Figure 4 The use state of the osteotomy guide plate provided in one embodiment of the present application Figure 2 ;

[0022] Figure 5 A schematic diagram of the proximal tibia structure after osteotomy using the osteotomy guide plate of the present application;

[0023] Figure 6 A front view of an osteotomy guide plate provided in one embodiment of the present application;

[0024] Figure 7 A top view of an osteotomy guide plate provided in one embodiment of the present application;

[0025] Figure 8 A right side view of an osteotomy guide plate provided in one embodiment of the present application;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of an osteotomy guide plate provided in another embodiment of the present application Figure 1 ;

[0027] Fig.10 A schematic diagram of the three-dimensional structure of an osteotomy guide plate provided in another embodiment of the present application Figure 2 ;

[0028] Fig.11 Schematic diagram of the three-dimensional structure of the first support block provided in the embodiment of the present application Figure 1 ;

[0029] Fig.12 Schematic diagram of the three-dimensional structure of the first support block provided in the embodiment of the present application Figure 2 ;

[0030] Fig.13 The use state of the first propping block provided in the embodiment of the present application Figure 1 ;

[0031] Fig.14 The use state of the first propping block provided in the embodiment of the present application Figure 1 .

[0032] Among them, the reference numerals in the figure are:

[0033] 100, osteotomy guide; 10, main body; 11, inner surface; 111, first bone contact area; 112, recessed area; 12, outer surface; 13, proximal surface; 14, transverse osteotomy groove; 141, first end; 142, second end; 15, second positioning hole; 16, distal surface; 17, protrusion; 171, third positioning hole; 20, transition part; 30, lateral part; 31, vertical osteotomy groove; 32, inner side; 33, outer side; 40, protruding part; 41, ascending osteotomy groove; 50, fixing part; 51, first positioning hole; 52, boss; 53, second bone contact area; 54, osteotomy depth indication number 60, first pressing part; 61, third bone contact area; 62, first anti-slip structure; 70, second pressing part; 80, pressing block; 90, first spreading block; 91, handle; 92, verification part; 921, first contact surface; 922, second contact surface; 923, third contact surface; 924, fourth contact surface; 93, limiting part; 94, positioning part; 95, second anti-slip structure; 200, tibia; 201, front side of tibia; 202, tibial articular surface; 203, first osteotomy suture; 204, second osteotomy suture; 205, first osteotomy segment; 206, second osteotomy segment; 207, third osteotomy segment. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Tibial osteotomy is mainly used to treat osteoarthritis. By adjusting the shape and position of the tibia and correcting the abnormal force line that has occurred, the purpose of treating osteoarthritis and relieving pain is achieved. At the same time, tibial osteotomy can also preserve the original knee joint, avoid or postpone artificial joint replacement as much as possible, so that patients can retain greater mobility.

[0039] Traditional tibial osteotomy is to perform an X-ray imaging scan of the patient's lower limbs in the weight-bearing position before surgery, and then plan and measure based on the X-ray image. During the operation, the operator first performs preliminary positioning by visual inspection, and then repeatedly measures and adjusts through fluoroscopy and other means and related measuring tools to determine the final osteotomy position. Then the osteotomy operation is performed, the cutting depth of the osteotomy knife is determined and the osteotomy is completed. The osteotomy seam is then expanded with a spreader, and the degree of expansion of the osteotomy seam is repeatedly adjusted with the help of fluoroscopy or measuring tools so that the angle between the osteotomy segments on both sides of the osteotomy seam reaches the preset correction angle. Finally, the osteotomy position is fixed with a fixation plate. This method is more dependent on the operator's experience and judgment during the operation. For inexperienced operators, the osteotomy accuracy and correction accuracy are prone to deviations, and there are also large differences between different operators. At the same time, multiple fluoroscopy is required to adjust the osteotomy position and the degree of distraction of the osteotomy suture during the operation. However, there are often adverse factors such as radiation and high radiation during the fluoroscopy process, which increases the risk of exposure of the operator and the patient to radiation and high radiation environments, and easily endangers the health of the operator and the patient. At the same time, multiple measurement operations during the operation will lead to longer operation time and increased surgical risks.

[0040] At present, there are also osteotomy guides to assist tibial osteotomy. When using osteotomy guides for tibial osteotomy, the osteotomy position, correction angle, and osteotomy depth are first designed based on CT data, and then the osteotomy is performed. The osteotomy guide is fitted to the patient's tibia, and the osteotomy position is exposed through the osteotomy groove on the osteotomy guide. The osteotomy knife is used to pass through the osteotomy groove on the osteotomy guide to perform osteotomy at the position to be osteotomed. The osteotomy position is then expanded with a distractor so that the angle between the osteotomy segments on both sides of the osteotomy seam reaches the preset correction angle, and finally the osteotomy position is fixed with a fixation plate. Using an osteotomy guide to assist tibial osteotomy can effectively improve the accuracy of tibial osteotomy, reduce the dependence of osteotomy surgery on operator experience, shorten the operation time, reduce the number of fluoroscopy, and reduce the risk of patients and operators being exposed to radiation and high-radiation environments.

[0041] However, the above-mentioned osteotomy guide can only be used for frontal osteotomy guidance and is used for extra-articular deformity correction. It is mainly suitable for high tibial osteotomy, cannot achieve articular surface osteotomy, cannot be used for intra-articular deformity correction, and is not suitable for proximal tibial combined osteotomy surgery.

[0042] Therefore, in order to solve the above problems, after in-depth research, an osteotomy guide was designed, which includes a main body, a transition part and a lateral part. The main body has an inner surface and an outer surface arranged opposite to each other, and a proximal surface arranged between the inner surface and the outer surface. The main body is provided with a transverse osteotomy groove running through the inner surface and the outer surface; the transition part is connected to one end of the main body, the transition part extends from the outer surface to the inner surface and is convexly arranged on the inner surface, the lateral part is connected to one end of the transition part away from the main body, the lateral part has an inner side facing the main body and an outer side away from the main body, and the lateral part is provided with a vertical osteotomy groove running through the inner and outer sides. When in use, the osteotomy guide is fixed on the tibia, the main body corresponds to the front side of the tibia, the lateral part corresponds to the tibial articular surface, the transverse osteotomy groove corresponds to the position to be osteotomized on the front side of the tibia, and the vertical osteotomy groove corresponds to the osteotomy position on the tibial articular surface. After the osteotomy knife performs osteotomy through the guidance of the transverse osteotomy groove and the vertical osteotomy groove, a first osteotomy seam and a second osteotomy seam that are interconnected are formed at the proximal end of the tibia, so that the proximal end of the tibia is divided into a first osteotomy segment, a second osteotomy segment and a third osteotomy segment that are connected in sequence. By pivoting the second osteotomy segment relative to the first osteotomy segment, the patient's tibial force line can be corrected, and by pivoting the third osteotomy segment relative to the second osteotomy segment, the sunken tibial platform can be adjusted, so that it can be suitable for proximal tibial combined osteotomy surgery.

[0043] Please also read Figures 1 to 10 Now, the osteotomy guide plate 100 provided in the embodiment of the present application is described.

[0044] See also Figure 1 and Figure 2 The osteotomy guide plate 100 includes a main body 10, an adapter 20 and a lateral portion 30. The main body 10 has an inner surface 11 and an outer surface 12 that are arranged opposite to each other, and a proximal surface 13 arranged between the inner surface 11 and the outer surface 12. The main body 10 is provided with a transverse osteotomy groove 14 that runs through the inner surface 11 and the outer surface 12; the adapter 20 is connected to one end of the main body 10, the adapter 20 extends from the outer surface 12 to the inner surface 12 and is protruding from the inner surface 11, the lateral portion 30 is connected to one end of the adapter 20 away from the main body 10, the lateral portion 30 has an inner side 32 facing the main body 10 and an outer side 33 away from the main body 10, and the lateral portion 30 is provided with a vertical osteotomy groove 31 that runs through the inner side and the outer side.

[0045] It should be noted that the "proximal end" of the component referred to in the embodiment of the present application is the end of the component close to the femur when the osteotomy guide plate 100 is fixed on the tibia 200, and the "distal end" of the component is the end of the component away from the femur when the osteotomy guide plate 100 is fixed on the tibia 200. Figure 3 .

[0046] The osteotomy guide plate 100 can be customized to conform to the tibia 200 of a specific patient. It is understandable that the osteotomy guide plate 100 can be personalized and dedicated to the patient. The osteotomy guide plate 100 is generally made of medical device grade materials, such as titanium alloy. Optionally, the osteotomy guide plate 100 is one-piece, and the osteotomy guide plate 100 is made using an integrated molding process. For example, the osteotomy guide plate 100 is computer-aided designed and manufactured using three-dimensional (3D) printing technology or other suitable methods. The use of 3D printing technology manufacturing process can ensure the accuracy and stability of the osteotomy guide plate 100, so that it can play a good auxiliary role in tibia 200 osteotomy surgery.

[0047] See also Figure 3 The main body 10 refers to the component corresponding to the front face 201 of the tibia when the osteotomy guide 100 is fixed on the tibia 200, wherein the inner surface 11 of the main body 10 refers to the coupling surface of the main body 10 that fits the tibia 200 when the osteotomy guide 100 is fixed on the tibia 200, and the shape of the inner surface 11 is the shape of the surface of the tibia 200 determined according to the preoperative imaging data of the patient's tibia 200, and the contour of the inner surface 11 can be concave and convex, or other suitable contours to match the surface of the tibia 200. The outer surface 12 of the main body 10 refers to the surface of the main body 10 that is away from the tibia 200 when the osteotomy guide 100 is fixed on the tibia 200, and the outer surface 12 can be, but is not limited to, a convex surface or a flat surface. The proximal surface 13 of the main body 10 refers to the surface of the main body 10 located between the inner surface 11 of the main body 10 and the outer surface 12 of the main body 10 and close to the femur when the osteotomy guide 100 is fixed on the tibia 200. It can be understood that the proximal surface 13 of the main body 10 refers to the surface of the main body 10 facing upward when the osteotomy guide 100 is fixed on the tibia 200. The proximal surface 13 of the main body 10 can be, but is not limited to, a smooth surface.

[0048] See also Figure 1 and Figure 4The lateral portion 30 refers to a component corresponding to the tibial articular surface 202 when the osteotomy guide 100 is fixed on the tibia 200. Specifically, by connecting the adapter 20 to one end of the main body 10, the adapter 20 extends from the outer surface 12 to the inner surface 12 and is convexly arranged on the inner surface 11 of the main body 10, and the lateral portion 30 is connected to one end of the adapter 20 away from the main body 10, so that the lateral portion 30 is bent relative to the main body 10, so that when the osteotomy guide 100 is fixed on the tibia 200, the main body 10 corresponds to the front face 201 of the tibia, as shown in FIG. Figure 3 , the lateral portion 30 corresponds to the tibial articular surface 202, as shown in FIG. Figure 4 .

[0049] When the osteotomy guide plate 100 is fixed on the tibia 200 , the transverse osteotomy groove 14 corresponds to the position of the tibia front surface 201 to be osteotomized, and the vertical osteotomy groove 31 corresponds to the position of the tibial articular surface 202 to be osteotomized.

[0050] In the following, for ease of understanding, the position to be osteotomized corresponding to the transverse osteotomy groove 14 is defined as the first osteotomy position, and the position to be osteotomized corresponding to the vertical osteotomy groove 31 is defined as the second osteotomy position.

[0051] It can be understood that the first osteotomy position is exposed through the transverse osteotomy groove 14, and the second osteotomy position is exposed through the vertical osteotomy groove 31. The transverse osteotomy groove 14 is used to guide the osteotomy knife to perform osteotomy on the first osteotomy position, and the vertical osteotomy groove 31 is used to guide the osteotomy knife to perform osteotomy on the second osteotomy position. Since the second osteotomy position is located above the first osteotomy position, the vertical osteotomy groove 31 extends away from the proximal surface 13, so that the vertical osteotomy groove 31 is located above the transverse osteotomy groove 14.

[0052] It should be noted that the length extension direction of the vertical osteotomy groove 31 intersects with the depth extension direction of the transverse osteotomy groove 14, so that the distal end of the osteotomy seam formed after the osteotomy knife osteotomizes the second osteotomy position passes through the osteotomy seam formed after the osteotomy knife osteotomizes the first osteotomy position.

[0053] In the following, for ease of understanding, the osteotomy joint formed after the osteotomy knife cuts the first osteotomy position is defined as the first osteotomy joint 203, and the osteotomy joint formed after the osteotomy knife cuts the second osteotomy position is defined as the second osteotomy joint 204. Figure 5 .

[0054] It can be understood that since the distal end of the second osteotomy seam 204 passes through the first osteotomy seam 203, after osteotomy is performed through the transverse osteotomy groove 14 and the vertical osteotomy groove 31, the proximal end of the tibia 200 is divided into a first osteotomy segment 205, a second osteotomy segment 206 and a third osteotomy segment 207 which are connected in sequence, wherein the gap between the first osteotomy segment 205 and the second osteotomy segment 206 is configured as the first osteotomy seam 203, and the gap between the second osteotomy segment 206 and the third osteotomy segment 207 is configured as the second osteotomy seam 204.

[0055] Compared with the prior art, the osteotomy guide plate 100 provided by the present application is characterized in that the adapter portion 20 is connected to one end of the main body portion 10, and the adapter portion 20 extends from the outer surface 12 to the inner surface 11 and is protruded from the inner surface 11 of the main body portion 10, and the lateral portion 30 is connected to one end of the adapter portion 20 away from the main body portion 10, so that the lateral portion 30 is bent relative to the main body portion 10. In this way, when the osteotomy guide plate 100 is fixed on the tibia 200, the main body portion 10 corresponds to the front side 201 of the tibia, the lateral portion 30 corresponds to the tibial articular surface 202, the transverse osteotomy groove 14 corresponds to the position to be osteotomized on the front side 201 of the tibia, and the vertical osteotomy groove 31 corresponds to the osteotomy position of the tibial articular surface 202. After the osteotomy is performed by the bone knife guided by the transverse osteotomy groove 14 and the vertical osteotomy groove 31, the proximal end of the tibia 200 is formed with a first osteotomy seam 203 and a second osteotomy seam 204 that are interconnected, so that the proximal end of the tibia 200 is divided into a first osteotomy segment 205, a second osteotomy segment 206 and a third osteotomy segment 207 that are connected in sequence. By pivoting the second osteotomy segment 206 relative to the first osteotomy segment 205, the force line of the patient's tibia 200 can be corrected, and the third osteotomy segment 207 is pivoted relative to the second osteotomy segment 206, so that the sunken tibia 200 platform can be adjusted, so that it can be suitable for combined osteotomy surgery of the proximal tibia 200, and of course it is also suitable for high osteotomy of the tibia 200.

[0056] In addition, the osteotomy position of the front side of the tibia 201 can be quickly confirmed through the transverse osteotomy groove 14, and the osteotomy position of the tibial articular surface 202 can be quickly confirmed through the vertical osteotomy groove 31. Compared with the traditional method of visual inspection and repeated measurement and adjustment through fluoroscopy and other means, this method of determining the osteotomy position effectively improves the accuracy of tibial osteotomy 200, reduces the dependence of tibial osteotomy surgery on the operator's experience, reduces the difficulty of the operation, improves the surgical effect, reduces the number of measurements and adjustment frequency, effectively shortens the operation time, and can effectively avoid the high radiation and radiation caused by the fluoroscopy process, which can easily cause harm to the health of the operator and the patient.

[0057] In some embodiments of this application, please refer to Figure 1 and Figure 2The osteotomy guide plate 100 also includes a protruding portion 40, which is connected to one end of the main body 10 close to the adapter portion 20 and protrudes from the proximal surface 13. The protruding portion 40 is provided with an ascending osteotomy groove 41 that penetrates from the outer surface 12 to the inner surface 11 and extends away from the proximal surface 13.

[0058] The ascending osteotomy groove 41 penetrates the surface of the protruding portion 40 on the side facing the inner surface 11 and the surface of the protruding portion 40 on the side facing the outer surface 12, and the protruding portion 40 is connected to one end of the main body 10 close to the lateral portion 30 and is located on the side of the proximal surface 13, so that the ascending osteotomy groove 41 is located above the transverse osteotomy groove 14. Therefore, when the osteotomy guide plate 100 is fixed on the tibia 200, the protruding portion 40 corresponds to the front face 201 of the tibia, and the ascending osteotomy groove 41 corresponds to the position to be osteotomized on the front face 201 of the tibia, which is located above the first osteotomy position.

[0059] In the following, for ease of understanding, the position to be osteotomized corresponding to the ascending osteotomy groove 41 is defined as the third osteotomy position.

[0060] The third osteotomy position is exposed through the ascending osteotomy groove 41, and the ascending osteotomy groove 41 is used to guide the osteotomy knife to perform osteotomy on the third osteotomy position. Specifically, the transverse osteotomy groove 14 is used to guide the osteotomy knife to perform horizontal transverse osteotomy on the first osteotomy position of the front side of the tibia 201 to form a transverse osteotomy incision, and the ascending osteotomy groove 41 is used to guide the osteotomy knife to perform ascending osteotomy on the third osteotomy position of the front side of the tibia 201 to form an ascending osteotomy incision, and the transverse osteotomy incision and the ascending osteotomy incision are connected to form a first osteotomy seam 203.

[0061] It should be noted that the ascending osteotomy groove can be designed according to the condition of the tibia. It can be understood that in some embodiments, the ascending osteotomy groove can be omitted, such as Figure 8 .

[0062] Optionally, in an embodiment with an ascending osteotomy groove 41, the length extension direction of the transverse osteotomy groove 14 is linear, such as Figure 1 .

[0063] Optionally, in an embodiment where the ascending osteotomy groove 41 is omitted, the length extension direction of the transverse osteotomy groove 14 is curved, such as Fig. 9 .

[0064] See also Figure 6 The transverse osteotomy groove 14 has a first end 141 disposed close to the transition portion 20 and a second end 142 disposed away from the transition portion 20 , and the first end 141 and the second end 142 are disposed opposite to each other.

[0065] In some embodiments of the present application, the first end 141 of the transverse osteotomy groove 14 is connected to one end of the ascending osteotomy groove 41, the second end 142 of the transverse osteotomy groove 14 is a closed end, and the other end of the ascending osteotomy groove 41 is also a closed end. By connecting the first end 141 of the transverse osteotomy groove 14 to one end of the ascending osteotomy groove 41, the transverse osteotomy groove 14 and the ascending osteotomy groove 41 are interconnected. After the osteotomy knife performs osteotomy through the transverse osteotomy groove 14 and the ascending osteotomy groove 41, the transverse osteotomy blade and the ascending osteotomy blade on the tibia 200 are interconnected, effectively avoiding the presence of bone between the transverse osteotomy blade and the ascending osteotomy blade, and there is no need to perform multiple cuts to separate the two sides of the tibia 200 after removing the osteotomy guide plate 100. Therefore, when performing osteotomy on the front side 201 of the tibia, only two cuts are needed to complete the osteotomy operation on the front side 201 of the tibia, which is conducive to shortening the operation time.

[0066] For ease of understanding, the end of the ascending osteotomy groove 41 close to the transverse osteotomy groove 14 is defined as the distal end of the ascending osteotomy groove 41 , and the end of the ascending osteotomy groove 41 away from the transverse osteotomy groove 14 is defined as the proximal end of the ascending osteotomy groove 41 .

[0067] In other embodiments of the present application, the first end 141 of the transverse osteotomy groove 14 is a closed end, the second end 142 of the transverse osteotomy groove 14 is an open end or a closed end, the distal end of the ascending osteotomy groove 41 is a closed end, and the proximal end of the ascending osteotomy groove 41 is an open end or a closed end. It can be understood that the transverse osteotomy groove 14 and the ascending osteotomy groove 41 are separated.

[0068] For other embodiments of this application, please refer to Fig. 9 and Fig.10 Alternatively, the first end 141 of the transverse osteotomy groove 14 may be a closed end, and the second end 142 of the transverse osteotomy groove 14 may also be a closed end.

[0069] The length of the protruding portion 40 extends in a direction away from the proximal end surface 13 . Optionally, the protruding portion 40 and the main body 10 form an L shape, or the protruding portion 40 and the main body 10 form a V shape.

[0070] It should be noted that the angle between the length extension direction of the ascending osteotomy groove 41 and the length extension direction of the transverse osteotomy groove 14 is determined according to the condition of the patient's tibia 200 .

[0071] In some embodiments of the present application, the length of the lateral portion 30 extends in a direction away from the proximal surface 13 and is spaced apart from the main body portion 10 .

[0072] It should be noted that the angle between the adapter portion 20 and the main body portion 10 can be determined according to the contour of the surface of the patient's tibia 200, and the angle between the lateral portion 30 and the adapter portion 20 can be determined according to the second osteotomy position.

[0073] Optionally, the lateral portion 30 and the transition portion 20 form an L-shape or a V-shape.

[0074] In some embodiments of the present application, the surface of the lateral portion 30 facing the inner surface 11 and the surface of the transition portion 20 facing the inner surface 11 are both configured to fit the coupling surface of the tibia 200 .

[0075] See also Figure 7 The inner surface 11 of the main body 10, the surface of the lateral portion 30 facing the inner surface 11, and the surface of the adapter portion 20 facing the inner surface 11 cooperate to form a curved surface, which can quickly push the osteotomy guide 100 into a fitting position on the tibia 200 and improve the positioning speed.

[0076] Optionally, the curved surface is substantially L-shaped or V-shaped.

[0077] In some embodiments of this application, please refer to Figure 1 and Figure 6 The osteotomy guide plate 100 further includes a fixing portion 50 connected to the main body 10. The fixing portion 50 is disposed on the proximal surface 13 of the main body 10. A first positioning hole 51 is provided on the fixing portion 50. The first positioning hole 51 is for the Kirschner wire to pass through to fix the osteotomy guide plate 100. The position of the first positioning hole 51 is also the position where the proximal end of the fixing plate is locked on the tibia 200. Specifically, when performing an osteotomy operation, the Kirschner wire is passed through the first positioning hole 51 to fix the osteotomy guide plate 100. After the osteotomy operation is completed, the osteotomy guide plate 100 is removed, the Kirschner wire is retained, the fixing plate is placed on the tibia 200, and the Kirschner wire is passed through the fixing hole on the proximal end of the fixing plate to position the proximal end of the fixing plate.

[0078] Furthermore, a protrusion 52 is provided on the surface of the fixing portion 50 facing the outer surface 12, and the length of the protrusion 52 extends from the inner surface 11 to the outer surface 12, and the first positioning hole 51 passes through the protrusion 52. The provision of the protrusion 52 is conducive to improving the stability of the Kirschner wire inserted in the first positioning hole 51.

[0079] Optionally, the fixing portion 50 is substantially in an inverted L shape.

[0080] In some embodiments of this application, please refer to Figure 2, there is a first bone contact area 111 on the inner surface 11, and the first bone contact area 111 is configured to fit the surface of the tibia 200. A second bone contact area 53 is provided on the surface of the fixing portion 50 facing the inner surface 11, and the second bone contact area 53 is spaced apart from the first bone contact area 111, and the second bone contact area 53 is configured to fit the surface of the tibia 200. The first bone contact area 111 and the second bone contact area 53 are respectively fitted at different positions on the surface of the tibia 200, which is conducive to improving the stability of the osteotomy guide plate 100 fitting the surface of the tibia 200.

[0081] Optionally, the first bone contact area 111 is a concave arc surface, and both ends of the first bone contact area 111 along the length direction of the transverse osteotomy groove 14 extend in a direction away from the outer surface 12. The second bone contact area 53 is also a concave arc surface, and the proximal end of the second bone contact area 53 and the distal end of the second bone contact area 53 extend in a direction away from the outer surface 12. By making the first bone contact area 111 and the second bone contact area 53 both concave arc surfaces, the first bone contact area 111 and the second bone contact area 53 have better adaptability to the surface shape of the tibia 200, which is conducive to improving the stability of the first bone contact area 111 and the second bone contact area 53 fitting on the surface of the tibia 200.

[0082] In some embodiments of the present application, the inner surface 11 is further defined by a recessed area 112, which is located between the first bone contact area 111 and the second bone contact area 53. The recessed area 112 is recessed from the inner surface 11 toward the outer surface 12. The recessed area 112 is configured to avoid the soft tissue and blood vessels at the proximal end of the tibia 200, thereby protecting the soft tissue and blood vessels at the proximal end of the tibia 200.

[0083] See also Figure 6 , an osteotomy depth indication number 54 is provided on the main body 10 or the fixing part 50. In this embodiment, the osteotomy depth indication number 54 is provided at the distal end of the fixing part 50. The osteotomy depth indication number 54 is configured to indicate the depth of the osteotomy performed by the osteotomy knife through the transverse osteotomy groove 14 and the ascending osteotomy groove 41, that is, the osteotomy depth indication number 54 is used to indicate the depth of the first osteotomy seam 203, effectively ensuring the osteotomy accuracy, reducing the difficulty of the operation and shortening the operation time.

[0084] In some embodiments of the present application, the osteotomy guide plate 100 further includes a first pressing portion 60 connected to the main body 10, the first pressing portion 60 protruding from the proximal surface 13 and arranged close to the outer surface 12. The operator acts on the first pressing portion to make the osteotomy guide plate 100 fit better to the front surface 201 of the tibia.

[0085] In some embodiments of this application, please refer to Figure 2The surface of the first pressing portion 60 facing the inner surface 11 defines a third bone contact area 61, and the third bone contact area 61 is configured to fit the tibia 200. The third bone contact area 61 cooperates with the first bone contact area 111 and the second bone contact area 53 to fit the tibia 200, thereby effectively improving the stability of the osteotomy guide plate 100 and the tibia 200.

[0086] Optionally, the third bone contact area 61 is a concave arc surface, and the proximal end of the third bone contact area 61 and the distal end of the third bone contact surface both extend in a direction away from the outer surface 12. By making the third bone contact area 61 a concave arc surface, the adaptability of the third bone contact area 61 to the surface shape of the tibia 200 is effectively guaranteed, which is conducive to improving the stability of the third bone contact area 61 fitting to the surface of the tibia 200.

[0087] In some embodiments of the present application, the osteotomy guide 100 further includes a second pressing portion 70 connected to the main body 10, the second pressing portion 70 protrudes from the proximal surface 13, and is disposed close to the outer surface 12. When the osteotomy guide 100 is fixed to the tibia 200, the operator can press the osteotomy guide 100 along the surface of the tibia 200 by acting on the first pressing portion 60 and / or the second pressing portion 70 as required.

[0088] In some embodiments of this application, please refer to Figure 6 The first pressing portion 60 and the second pressing portion 70 are both provided with a first anti-slip structure 62 . The provision of the first anti-slip structure 62 can effectively prevent the osteotomy guide plate 100 from slipping when being pressed.

[0089] Optionally, the first anti-skid structure 62 may be an anti-skid convex pattern, an anti-skid groove or an anti-skid pad.

[0090] In some embodiments of this application, please refer to Figure 8 The osteotomy guide plate 100 further includes a pressing block 80 connected to the adapter 20, and the pressing block 80 protrudes from the upper end surface of the adapter 20. The operator presses the pressing block 80 to make the adapter 20 and the lateral portion 30 fit the tibial articular surface 202 better.

[0091] Optionally, a first anti-slip structure 62 is also provided on the pressing block 80 .

[0092] In some embodiments of the present application, see Figure 6 The main body 10 is provided with a second positioning hole 15 configured for the Kirschner wire to pass through. The second positioning hole 15 is for the Kirschner wire to pass through to fix the osteotomy guide plate 100.

[0093] Furthermore, the length of the transverse osteotomy groove 14 extends from one end of the transverse osteotomy groove 14 close to the lateral portion 30 to the end of the transverse osteotomy groove 14 away from the lateral portion 30, and the number of the second positioning holes 15 is multiple, and the multiple second positioning holes 15 are arranged at intervals along the length direction of the transverse osteotomy groove 14. By setting multiple second positioning holes 15, it is beneficial to improve the stability of the fixed osteotomy guide plate 100.

[0094] In some embodiments of the present application, the main body 10 further has a distal surface 16 arranged opposite to the proximal surface 13 and a protrusion 17 protruding from the distal surface 16. The second positioning hole 15 is arranged at a position of the main body 10 close to the distal surface 16. The protrusion 17 is provided with a third positioning hole 171. The third positioning hole 171 is located between two adjacent second positioning holes 15 to form a virtual triangle, thereby effectively improving the reliability of fixing the osteotomy guide 100 on the tibia 200.

[0095] Optionally, the number of the second positioning holes 15 is two, and the two second positioning holes 15 are spaced apart along the length direction of the transverse osteotomy groove 14, and the number of the third positioning hole 171 is one, and the third positioning hole 171 is located between the two second positioning holes 15 along the length direction of the transverse osteotomy groove 14. Of course, the number of the second positioning holes 15 can also be more, such as three or four, and the number of the third positioning holes 171 can also be more, such as two or three.

[0096] See also Figure 11 to Figure 12 The present application also provides an osteotomy guide assembly, which includes an osteotomy guide plate 100 according to any of the above embodiments, a first expansion block 90, and a second expansion block. The first expansion block 90 is used to expand the first osteotomy slit 203 formed by osteotomy through the transverse osteotomy groove 14, so as to adjust the expansion degree of the first osteotomy slit 203 to a preset value, so that the angle between the second osteotomy segment 206 and the first osteotomy segment 205 reaches a preset correction angle. The second expansion block is used to expand the second osteotomy slit 204 formed by the vertical osteotomy groove 31, so as to adjust the expansion degree of the second osteotomy slit 204 to a preset value, so that the angle between the second osteotomy segment 206 and the first osteotomy segment 205 reaches a preset correction angle.

[0097] Compared with the prior art, the osteotomy guide assembly provided by the present application adopts the above-mentioned osteotomy guide plate 100. After the osteotomy knife performs osteotomy through the guidance of the transverse osteotomy groove 14 and the vertical osteotomy groove 31, the proximal end of the tibia 200 is formed with a first osteotomy seam 203 and a second osteotomy seam 204 that penetrate each other, so that the proximal end of the tibia 200 is divided into a first osteotomy segment 205, a second osteotomy segment 206 and a third osteotomy segment 207 that are connected in sequence. By pivoting the second osteotomy segment 206 relative to the first osteotomy segment 205, the force line of the patient's tibia 200 can be corrected, and the third osteotomy segment 207 can be pivoted relative to the second osteotomy segment 206, so that the sunken tibia 200 platform can be adjusted, so that it can be suitable for the combined osteotomy surgery of the proximal tibia 200, and of course it is also suitable for high osteotomy of the tibia 200. By setting the first distraction block 90, it is convenient to quickly distract the first osteotomy gap 203 formed by osteotomy through the transverse osteotomy groove 14, effectively ensuring that the correction angle of the knee joint axis reaches a predetermined value. By setting the second distraction block to distract the second osteotomy gap 204 formed by the vertical osteotomy groove 31, the distraction degree of the second osteotomy gap 204 can be adjusted to a preset value, so that the angle between the second osteotomy segment 206 and the first osteotomy segment 205 reaches the preset correction angle, thereby achieving adjustment of the sunken tibia 200 platform, which is beneficial to reducing the long operation time caused by repeatedly measuring the distraction degree of the first osteotomy gap 203 and the second osteotomy gap 204, and is beneficial to improving the success rate of the operation and improving the patient's quality of life after surgery.

[0098] In some embodiments of the present application, the first support block 90 includes a handle 91, a verification portion 92 and a limit portion 93. The handle 91 is configured as a portion for an operator to hold. The handle 91 can be any suitable shape for an operator to hold. For example, the handle 91 is roughly cylindrical. The limiting portion 93 is disposed between the handle 91 and the verification portion 92. The verification portion 92 is used to verify the correction angle after osteotomy. The verification portion 92 has a first contact surface 921 and a second contact surface 922 that are disposed at a preset angle. The preset angle is equal to the correction angle. The distance between the first contact surface 921 and the second contact surface 922 gradually decreases in the direction away from the handle 91. The first contact surface 921 is configured to contact the surface of the first osteotomy segment 205 toward the first osteotomy joint 203. The second contact surface 922 is configured to contact the surface of the second osteotomy segment 206 toward the second osteotomy joint 204. It can be understood that the angle between the first contact surface 921 and the second contact surface 922 is the required correction angle between the second osteotomy segment 206 and the first osteotomy segment 205. The limiting portion 93 protrudes from the first contact surface 921 and / or the second contact surface 922. The limiting portion 93 is configured to limit the depth of insertion of the first distraction block 90 into the first osteotomy joint 203, such as Fig.13 , which is beneficial to improve the angle correction accuracy.

[0099] In some embodiments of this application, please refer to Fig.11 A second anti-skid structure 95 is provided on the handle 91. The second anti-skid structure 95 effectively improves the stability of the operator holding the handle 91.

[0100] Optionally, the first contact surface 921 and the second contact surface 922 are both inclined surfaces. Alternatively, the first contact surface 921 is a plane, and the second contact surface 922 is an inclined surface.

[0101] Optionally, there are two limiting portions 93 , and one of the limiting portions 93 is protruded from the first contact surface 921 , and the other limiting portion 93 is protruded from the second contact surface 922 .

[0102] In some embodiments of the present application, the verification part 92 further has a third contact surface 923, which is located between the first contact surface 921 and the second contact surface 922, and is configured to face the surface of the first osteotomy seam 203. Optionally, the third contact surface 923 is a curved surface that matches the patient's tibia 200.

[0103] In some embodiments of the present application, the verification unit 92 further has a fourth contact surface 924, the fourth contact surface 924 is located between the first contact surface 921 and the second contact surface 922, and is arranged opposite to the third contact surface 923, and the fourth contact surface 924 is limited to contact with the fixing plate. It can be understood that when determining the fixed position of the fixing plate, the Kirschner wire inserted in the first positioning hole 51 is inserted into the fixing hole at the corresponding position of the proximal end of the fixing plate to determine the position of the proximal end of the fixing plate on the tibia 200, and the fourth contact surface 924 contacts the fixing plate to determine the position of the fixing plate in the lateral direction of the tibia 200.

[0104] In some embodiments of this application, please refer to Fig.12 The first distraction block 90 further includes a positioning portion 94, which is disposed on the verification portion 92. The positioning portion 94 is used to fit with the outer side surfaces of the two osteotomy segments after osteotomy, specifically, the positioning portion 94 is used to fit with the outer side surfaces of the first osteotomy segment 205 and the second osteotomy segment 206. By providing the positioning portion 94, the stability of the first distraction block 90 inserted into the first osteotomy slit 203 is effectively guaranteed, and the distraction accuracy of the first distraction block 90 on the first osteotomy slit 203 is effectively improved, so that the operator can quickly insert the first distraction block 90 into a predetermined depth, reduce the difficulty of operation, reduce the operation time, and effectively ensure the correction accuracy.

[0105] Optionally, the second anti-slip structure 95 may be a groove provided on the handle 91 , or may be a convex pattern provided on the surface of the handle 91 .

[0106] It should be noted that the structure of the second expansion block may be the same or substantially the same as the structure of the first expansion block 90 .

[0107] When the osteotomy guide assembly of the present application is used to perform tibial osteotomy surgery, the operation method is as follows:

[0108] 1. Place the osteotomy guide plate 100 at the desired position of the patient's tibia 200, and make the fixing portion 50 correspond to the characteristic point on the patient's tibia 200, such as Figure 3 and Figure 4 .

[0109] 2. Insert Kirschner wires along the first positioning hole 51 , the second positioning hole 15 and the third positioning hole 171 respectively to temporarily fix the osteotomy guide plate 100 on the patient's tibia 200 .

[0110] 3. The osteotomy knife is passed through the transverse osteotomy groove 14 and the ascending osteotomy groove 41 to perform osteotomy on the front side of the tibia 201 to form a first osteotomy seam 203. The tibia 200 sections located on both sides of the first osteotomy seam 203 are respectively the first osteotomy section 205 and the second osteotomy section 206. The osteotomy knife is passed through the lateral osteotomy seam to perform osteotomy on the tibial articular surface 202 to form a second osteotomy seam 204. The tibia 200 sections located on both sides of the second osteotomy seam 204 are respectively the second osteotomy section 206 and the third osteotomy section 207. Figure 5 .

[0111] 4. After the osteotomy is completed, remove the Kirschner wires inserted through the second positioning hole 15 and the third positioning hole 171 , retain the Kirschner wire inserted through the first positioning hole 51 , and remove the osteotomy guide plate 100 .

[0112] 5. Insert the first distraction block 90 into the first osteotomy gap 203 to pivot the second osteotomy segment 206 relative to the first osteotomy segment 205 so that the angle between the second osteotomy segment 206 and the first osteotomy segment 205 reaches a preset correction angle. Fig.13 and Fig.14 By pivoting the third osteotomy segment 207 relative to the second osteotomy segment 206, the angle between the third osteotomy segment 207 and the second osteotomy segment 206 reaches a preset correction angle.

[0113] 6. Fill the first osteotomy gap 203 and the second osteotomy gap 204 with bone graft or artificial bone, and position the fixation plate on the tibia 200 under the guidance of the Kirschner wire inserted in the positioning hole and the fourth contact surface 924 of the first distraction block 90 .

[0114] 7. Remove the first distraction block 90, thereby completing the proximal joint osteotomy of the tibia 200.

[0115] The osteotomy guide plate 100 and the osteotomy guide assembly provided in the embodiment of the present application mainly have the following beneficial effects:

[0116] 1. The main body 10 corresponds to the front side 201 of the tibia, the lateral part 30 corresponds to the tibial articular surface 202, the transverse osteotomy groove 14 corresponds to the position to be osteotomized on the front side 201 of the tibia, and the vertical osteotomy groove 31 corresponds to the osteotomy position of the tibial articular surface 202. After the osteotomy knife is guided by the transverse osteotomy groove 14 and the vertical osteotomy groove 31 to perform osteotomy, the proximal end of the tibia 200 is formed with a first osteotomy seam 203 and a second osteotomy seam 204 that penetrate each other, so that the tibia The proximal end of 200 is divided into a first osteotomy segment 205, a second osteotomy segment 206 and a third osteotomy segment 207 which are connected in sequence. By pivoting the second osteotomy segment 206 relative to the first osteotomy segment 205, the force line of the patient's tibia 200 can be corrected. By pivoting the third osteotomy segment 207 relative to the second osteotomy segment 206, the sunken tibial 200 platform can be adjusted. It is suitable for high tibial osteotomy 200 and proximal tibial combined osteotomy surgery.

[0117] 2. By setting corresponding transverse osteotomy grooves 14, ascending osteotomy grooves 41 and vertical osteotomy grooves 31 according to the axis correction angle of the patient's knee joint to be cut, the osteotomy of the tibial front 201 is guided by the transverse osteotomy grooves 14 or by the cooperation of the transverse osteotomy grooves 14 and the ascending osteotomy grooves 41, and the osteotomy of the tibial articular surface 202 is guided by the vertical osteotomy grooves 31, so that the operator can easily, quickly and accurately determine the osteotomy position and depth during the operation, thereby improving the accuracy of the tibial 200 osteotomy, greatly reducing the dependence of the tibial 200 osteotomy operation on the operator's experience, reducing the difficulty of the operation, improving the surgical effect, reducing the number of measurements and the frequency of adjustments, effectively shortening the operation time and effectively avoiding the high radiation and radiation caused by the fluoroscopy process, which can easily cause harm to the health of the operator and the patient, and effectively protecting the health of the operator and the patient.

[0118] 3. By setting an osteotomy depth indication number 54 on the main body 10 or the fixing part 50, the osteotomy depth indication number 54 is used to indicate the depth of the first osteotomy seam 203, effectively ensuring the osteotomy accuracy, reducing the difficulty of the operation and shortening the operation time.

[0119] 4. Through the cooperation of the first positioning hole 51, the second positioning hole 15 and the third positioning hole 171, the osteotomy guide plate 100 can be quickly, accurately and stably fixed to the tibia 200. In addition, the first positioning hole 51 can also quickly locate the position of the fixing plate.

[0120] 5. By setting the first distraction block 90, it is convenient to quickly distract the first osteotomy slit 203 formed by osteotomy through the transverse osteotomy groove 14, effectively ensuring that the correction angle of the knee joint axis reaches a predetermined value, which is beneficial to reducing the long operation time caused by repeatedly measuring the distraction degree of the first osteotomy slit 203, and is beneficial to improving the success rate of the operation and improving the patient's quality of life after surgery.

[0121] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An osteotomy guide plate, characterized in that: include: A main body portion, a transition portion and a lateral portion, the main body portion having an inner surface and an outer surface arranged opposite to each other, and a proximal surface arranged between the inner surface and the outer surface, the main body portion is provided with a transverse osteotomy groove running through the inner surface and the outer surface; the transition portion is connected to one end of the main body portion, the transition portion extends from the outer surface to the inner surface and is protruding from the inner surface, the lateral portion is connected to one end of the transition portion away from the main body portion, the lateral portion has an inner side facing the main body portion and an outer side away from the main body portion, and the lateral portion is provided with a vertical osteotomy groove running through the inner side and the outer side.

2. The osteotomy guide plate according to claim 1, characterized in that: The osteotomy guide plate also includes a protruding portion, which is connected to one end of the main body close to the adapter portion and protrudes from the proximal surface. The protruding portion is provided with an ascending osteotomy groove that penetrates from the outer surface to the inner surface and extends away from the proximal surface.

3. The osteotomy guide plate according to claim 2, characterized in that: The transverse osteotomy groove has a first end close to the transition portion and a second end away from the transition portion, and the first end is connected to one end of the ascending osteotomy groove.

4. The osteotomy guide plate according to claim 1, characterized in that: The osteotomy guide plate further comprises a fixing portion connected to the main body, wherein the fixing portion is arranged on a proximal end surface of the main body, and a first positioning hole is provided on the fixing portion.

5. The osteotomy guide plate according to claim 4, characterized in that: A first bone contact area is formed on the inner surface, and a second bone contact area is formed on the surface of the fixing portion facing the inner surface, wherein the second bone contact area is spaced apart from the first bone contact area.

6. The osteotomy guide plate according to any one of claims 1 to 5, characterized in that: The osteotomy guide plate further includes a pressing block connected to the adapter portion, and the pressing block protrudes from an upper surface of the adapter portion.

7. The osteotomy guide plate according to any one of claims 1 to 5, characterized in that: The main body is provided with a second positioning hole configured for the Kirschner wire to pass through.

8. An osteotomy guide assembly, characterized in that: include: The osteotomy guide plate and the first and second distraction blocks as described in any one of claims 1 to 7, wherein the first distraction block is used to distract the first osteotomy joint formed by osteotomy through the transverse osteotomy groove, and the second distraction block is used to distract the second osteotomy joint formed by osteotomy through the vertical osteotomy groove.

9. The osteotomy guide assembly according to claim 8, characterized in that: The first distraction block includes a handle, a verification part and a limit part, the limit part is arranged between the handle and the verification part, the verification part is used to verify the correction angle after osteotomy, the verification part has a first contact surface and a second contact surface set at a preset angle, the preset angle is equal to the correction angle, and the limit part protrudes from the first contact surface and / or the second contact surface.

10. The osteotomy guide assembly according to claim 9, characterized in that: The first expansion block further comprises a positioning portion, which is arranged on the verification portion and is used to fit with the outer side surfaces of the two osteotomy segments after osteotomy.

Images