Adjustable osteotomy guide plate assembly
By providing an adjustable osteotomy guide assembly in unicondylar knee arthroplasty, the problems of inaccurate implantation position and inaccurate force line recovery during femoral and tibial resection and prosthesis installation in the prior art are solved, and the accuracy and safety of the surgical procedure are achieved, shortening the surgical time and reducing patient trauma.
Patent Information
- Application Number
- CN202421000805.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing unicondylar knee arthroplasty (UKA) lacks standardized instruments and guides during femur and tibia removal and prosthesis installation, resulting in inaccurate implantation position and inaccurate force line recovery, affecting postoperative joint alignment and long-term patient effect.
An adjustable osteotomy guide assembly is provided, including a movable guide plate and a fixing guide plate. Through the mating of the latch and through holes, the relative position adjustment between the movable guide plate and the fixing guide plate is realized to ensure the accuracy and safety of the osteotomy process.
Through this adjustable osteotomy guide assembly, it is possible to first and then drill holes in UKA surgery to ensure the satisfaction of the flexion gap without adding tibia, avoiding the problem of drilling first and then being unable to modify the position of the femoral prosthesis, shortening the surgical time, reducing patient trauma, and improving operator satisfaction.
Smart Images
Figure CN222841044U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical auxiliary instruments, and in particular to an adjustable osteotomy guide plate assembly. Background Art
[0002] Unicompartmental knee arthroplasty (UKA) is a partial knee replacement that replaces or reshapes only a portion of the patient's knee to relieve severe discomfort caused by arthritis and degeneration of the lateral or medial condylar cartilage of the knee. It is considered a minimally invasive alternative to total knee arthroplasty (TKA), in which the condylar bones of the distal femur and proximal tibia are completely removed and reshape with femoral and tibial prosthetic devices.
[0003] Currently, the success of UKA still relies heavily on the experience and expertise of the surgeon, who often needs to adjust the resection site based on the patient's specific anatomy to ensure that the prosthetic device is properly installed to ensure accurate alignment of the joint after surgery. There are currently no standardized instruments or femoral and tibial resection templates or guides that surgeons can rely on to provide appropriate resection of the femoral and tibial plateaus to insert the femoral and tibial components. Because of this, surgeons are still reluctant to perform UKA, and patients are reluctant to choose TKA over UKA, even in cases where UKA is indicated or may be appropriate.
[0004] UKA osteotomy follows the principle of "cut as much as you can and fill as much as you can", and at the same time, there must be the same flexion and extension gap, considering that traditional UKA has the disadvantage of being difficult to ensure the accuracy of the prosthesis implant position and the accuracy of force line restoration. Therefore, with the development and application of 3D printing technology in orthopedics, doctors can make models of the surgical site before surgery to carry out preoperative planning and doctor-patient communication; at the same time, 3D printing technology can also be used to make intraoperative templates to assist intraoperative operations and improve the reliability and accuracy of the surgery. There are also some positioning guides for unicompartmental replacement on the market, but due to the characteristics of the existing UKA femoral osteotomy instrument surgical method, after determining the prosthesis model, the column hole of the femoral prosthesis is drilled first, and then the posterior condyle osteotomy is performed; when measuring the flexion gap, even if the gap is insufficient, it can only be compensated by increasing the amount of tibial osteotomy, which will lead to excessive tibial osteotomy, a small tibial prosthesis model, posterior displacement of the femoral prosthesis, and lowering of the joint line, which may even be unfavorable for patient revision in the long term. Utility Model Content
[0005] The purpose of the present application is to provide an adjustable osteotomy guide plate assembly in view of at least one technical problem involved in the background technology.
[0006] In order to achieve the above objectives, this application adopts the following technical solutions:
[0007] One aspect of the present application provides an adjustable osteotomy guide assembly, comprising a movable guide and a fixed guide, wherein the movable guide comprises a first main body portion and a posterior condyle osteotomy portion connected to each other, wherein the first main body portion and the posterior condyle osteotomy portion are arranged in a first direction, a column hole is formed on the first main body portion, the column hole is a through hole extending in a second direction, and an osteotomy groove is formed on the posterior condyle osteotomy portion.
[0008] The fixed guide plate includes a second main body portion and a guide plate fixing portion, the guide plate fixing portion is fixed to one side of the second main body portion in the third direction, a slide groove extending in the first direction is formed on the second main body portion, the first main body portion and the slide groove are slidably matched in the first direction, a first through hole is formed on the second main body portion, the first through hole is a through hole extending in the second direction, and the first through hole is a waist-shaped hole whose length direction is parallel to the first direction, the column hole corresponds to the position of the first through hole; the first direction, the second direction and the third direction are perpendicular to each other.
[0009] Optionally, a first socket and a second socket are formed on the side wall of the slide groove, the first socket and the second socket are both through holes extending in the third direction, and the first socket, the second socket and the posterior condyle osteotomy portion are arranged in sequence in the first direction; a third socket and a fourth socket are formed on the first main body portion extending in the third direction, and the third socket, the fourth socket and the posterior condyle osteotomy portion are arranged in sequence in the first direction, and a distance between the first socket and the second socket is smaller than a distance between the third socket and the fourth socket; the first socket and the third socket are used for plugging in through a pin, and the second socket and the fourth socket are used for plugging in through a pin.
[0010] The beneficial effect of the technical solution is that before the first femoral condyle osteotomy is performed, the relative position between the movable guide plate and the fixed guide plate is fixed by plugging the pin into the first socket and the third socket, so that when the first femoral condyle osteotomy is performed, the movable guide plate and the fixed guide plate are not easily moved relative to each other, thereby improving the safety and accuracy of the operation. After the first femoral condyle osteotomy is completed, the flexion gap is measured. If the flexion gap does not meet the requirements, the pin is removed from the first socket and the second socket, and the movable guide plate is moved relative to the fixed guide plate in the direction from the posterior condyle osteotomy part to the first main body part so that the position of the second socket corresponds to the position of the fourth socket, the pin is inserted into the second socket and the fourth socket, and the relative position between the movable guide plate and the fixed guide plate is fixed again, and then the second femoral condyle osteotomy is performed. In this way, when the second femoral condyle osteotomy is performed, the movable guide plate and the fixed guide plate are not easily moved relative to each other, thereby improving the safety and accuracy of the operation.
[0011] Optionally, two of the first plug holes and two of the second plug holes are formed on the second main body portion, and two of the third plug holes and two of the fourth plug holes are formed on the first main body portion.
[0012] The beneficial effect of this technical solution is that: in this way, the two first sockets are used to cooperate with the two third sockets in a one-to-one correspondence, and the two second sockets are used to cooperate with the two fourth sockets in a one-to-one correspondence, which further improves the definition of the first main body and the second main body.
[0013] Optionally, a first reference edge extending in the third direction is formed on the movable guide plate, and a second reference edge extending in the third direction is formed on the second main body portion, the second reference edge is located at an end of the second main body portion away from the posterior condyle osteotomy portion, and the second socket and the fourth socket are used for plugging through a pin so that the first reference edge and the second reference edge are located on the same straight line.
[0014] The beneficial effect of this technical solution is that by setting the first reference edge and the second reference edge, when adjusting the relative position of the movable guide plate and the fixed guide plate, it is possible to objectively observe whether the second socket and the fourth socket are in a coaxial state; when the first reference edge and the second reference edge are in the same straight line, it can be considered that the second socket and the fourth socket are in a coaxial state, and the pin can be passed through the second socket and the fourth socket in turn to achieve a fixed connection between the movable guide plate and the fixed guide plate, which is convenient for medical staff to operate the adjustable osteotomy guide assembly and improve surgical efficiency and reliability.
[0015] Optionally, the movable guide plate also includes an osteotomy reference block formed on the first main body portion, the osteotomy reference block protrudes from the first main body portion from the side of the first main body portion away from the second main body portion in the second direction, and the first reference edge is formed on the osteotomy reference block.
[0016] The beneficial effect of this technical solution is that by setting an osteotomy reference block and locating the first reference edge on the osteotomy reference block, since the osteotomy reference block protrudes from the first main body, the first reference edge is relatively more eye-catching, making it easier for the user to determine whether the first reference edge and the second reference edge are located in the same straight line, further improving the convenience of using the adjustable osteotomy guide assembly, and further improving the surgical efficiency and reliability.
[0017] Optionally, the fixed guide plate also includes a femoral fitting portion, which is fixed to one end of the second main body portion away from the posterior condyle osteotomy portion, and the femoral fitting portion is located on a side of the second main body portion that is away from the slide groove notch, and a first femoral fitting surface is formed on the femoral fitting portion, the first femoral fitting surface is perpendicular to the third direction, and the first femoral fitting surface faces the position of the second main body portion.
[0018] The beneficial effect of this technical solution is that by making the first femoral fitting surface fit the femur, the adjustable osteotomy guide plate assembly can be positioned more accurately before connecting the adjustable osteotomy guide plate assembly to the femur, thereby facilitating the fixing of the guide plate and the femur, thereby improving the accuracy of subsequent osteotomy surgery.
[0019] Optionally, a guide plate pressing area is also formed on the femoral fitting portion, and in the third direction, the guide plate pressing area and the first femoral fitting surface are respectively located on opposite sides of the femoral fitting portion.
[0020] The beneficial effect of this technical solution is that, in the process of fixing the fixed guide plate to the femur through the guide plate fixing part, the medical staff can press the guide plate pressing area to make the first femoral fitting surface fit tightly with the femur, thereby making the adjustable osteotomy guide plate assembly less likely to move relative to the femur, further improving the accuracy of subsequent osteotomy surgery.
[0021] Optionally, two fixing holes are formed on the femoral fitting portion, and the two fixing holes are located on both sides of the guide plate pressing area in a one-to-one correspondence in the first direction.
[0022] The beneficial effect of this technical solution is that when the adjustable osteotomy guide assembly is fixed to the femur, the femoral fitting part can be first fixed to the femur through two pins and two fixing holes. Since the first femoral fitting surface can be closely fitted to the femur by pressing the pressing area of the guide plate, when the femoral fitting part is fixed to the femur through the two fixing holes, the femoral fitting part is not easy to slide relative to the femur, thereby improving the stability and success rate of the entire process and improving work efficiency.
[0023] Optionally, a second femoral fitting surface is also formed on the second main body portion, the second femoral fitting surface is arranged away from the sliding groove, and the second femoral fitting surface is perpendicular to the second direction.
[0024] The beneficial effect of this technical solution is that the first fitting surface and the second femoral fitting surface are fitted to the femur together, thereby further improving the stability and reliability of positioning when the fixed guide plate is connected to the femur, and improving the connection accuracy between the fixed guide plate and the femur.
[0025] Optionally, an auxiliary hole is formed on the first main body portion, the auxiliary hole is a through hole extending in the second direction, the column hole and the auxiliary hole are arranged in the first direction, the column hole is arranged close to the posterior condyle osteotomy portion, and a second through hole is formed on the second main body portion, the second through hole is a through hole extending in the second direction, and the second through hole is a waist-shaped hole whose length direction is parallel to the first direction, and the auxiliary hole corresponds to the position of the second through hole.
[0026] The beneficial effect of this technical solution is that the pin can pass through the auxiliary hole and the second through hole to connect with the femur, and because the second through hole is a waist-shaped hole, after the movable guide plate moves relative to the fixed guide plate, the position of the auxiliary hole still corresponds to the position of the second through hole. In the embodiment of the present application, preferably, the fixed guide plate also includes an outer fitting block for fitting with the outer bone surface, and the outer fitting block and the guide plate fixing portion are located on the same side of the second main body.
[0027] The technical solution provided by this application can achieve at least one of the following beneficial effects:
[0028] The adjustable osteotomy guide assembly provided in the present application can achieve osteotomy before drilling when used, ensuring that the flexion gap meets the requirements. There is no need to perform additional tibial resection to protect the tibia, and the problem of being unable to modify the position of the femoral prosthesis after drilling is avoided. The surgeon does not have to choose an overly thick gasket due to additional tibial resection, and the operation time is shortened, the patient trauma is reduced, and the surgeon's satisfaction is increased.
[0029] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0031] Figure 1 A schematic diagram of a three-dimensional structure at one angle of an embodiment of an adjustable osteotomy guide plate assembly provided in an embodiment of the present application;
[0032] Figure 2 A schematic diagram of a three-dimensional structure from another angle of an embodiment of an adjustable osteotomy guide plate assembly provided in an embodiment of the present application;
[0033] Figure 3A schematic diagram of the three-dimensional structure at a third angle of an embodiment of the adjustable osteotomy guide plate assembly provided in an embodiment of the present application;
[0034] Figure 4 A schematic diagram of a three-dimensional structure at one angle of an implementation manner of a fixed guide plate provided in an embodiment of the present application;
[0035] Figure 5 A schematic diagram of a three-dimensional structure from another angle of an implementation manner of a fixed guide plate provided in an embodiment of the present application;
[0036] Figure 6 A schematic diagram of the three-dimensional structure at one angle of an implementation manner of a movable guide plate provided in an embodiment of the present application.
[0037] Reference numerals:
[0038] 01- auxiliary hole; 02- column hole;
[0039] 03- posterior condylar osteotomy; 04- osteotomy groove;
[0040] 06-second jack; 07-outer fitting block;
[0041] 08-first femoral fitting surface; 09-guide plate fixing part;
[0042] 10- second main body; 11- osteotomy reference block;
[0043] 12-first main body; 13-fixing hole;
[0044] 14-guide plate pressing area; 15-femoral fitting part;
[0045] 16-second reference edge; 17-first via hole;
[0046] 18-second femoral fitting surface; 19-second through hole;
[0047] 20-first plug hole; 21-slide slot;
[0048] 22-first reference edge; 23-third jack;
[0049] 24-Fourth jack. DETAILED DESCRIPTION
[0050] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0051] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0053] like Figures 1 to 6 As shown, one aspect of the present application provides an adjustable osteotomy guide assembly, comprising a movable guide and a fixed guide, wherein the movable guide comprises a first main body portion 12 and a posterior condyle osteotomy portion 03 connected to each other, wherein the first main body portion 12 and the posterior condyle osteotomy portion 03 are arranged in a first direction, a column hole 02 is formed on the first main body portion 12, and the column hole 02 is a through hole extending in a second direction, and an osteotomy groove 04 is formed on the posterior condyle osteotomy portion 03,
[0054] The fixed guide plate includes a second main body portion 10 and a guide plate fixing portion 09. In the third direction, the guide plate fixing portion 09 is fixed to one side of the second main body portion 10. A slide groove 21 extending in the first direction is formed on the second main body portion 10. The first main body portion 12 slides with the slide groove 21 in the first direction. A first through hole 17 is formed on the second main body portion 10. The first through hole 17 is a through hole extending in the second direction, and the first through hole 17 is a waist-shaped hole whose length direction is parallel to the first direction. The column hole 02 corresponds to the position of the first through hole 17. The first direction, the second direction and the third direction are perpendicular to each other.
[0055] The word "can" in the adjustable osteotomy guide plate assembly described in the embodiments of the present application means "able to"; and the word "active" in the movable guide plate refers to the ability to move relative to the fixed guide plate under a specific state.
[0056] The adjustable osteotomy guide assembly provided in the embodiment of the present application is used. The model and position of the unicompartmental replacement are determined through preoperative planning, and the adjustable osteotomy guide assembly is designed. The first main body 12 is fitted with the distal surface of the femur, and the guide is fixed to the femur by implanting a fixing nail into the guide plate fixing part 09. The osteotomy groove 04 and the column hole 02 of the movable assembly are designed according to the prosthesis parameters planned before the operation. The movable guide is placed in the slide groove 21, and the relative position of the movable guide and the fixed guide in the first direction is adjusted. After the osteotomy state is in the planned state, the posterior condyle of the femur is osteotomized and the flexion gap is measured. When the flexion gap meets the requirement, drilling is continued along the main column hole 02 to complete the placement of the prosthesis. If the measured flexion gap is insufficient after osteotomy due to ligament status problems, the movable guide is moved forward an appropriate distance in the direction from the posterior condyle osteotomy part 03 to the first main body 12, and a certain thickness is cut again along the osteotomy groove 04, and then drilling is performed along the main column hole 02 to complete the placement of the prosthesis. In an embodiment of the present application, when the measured flexion gap is insufficient after the first osteotomy and a second osteotomy is performed, before the second osteotomy, the distance that the movable guide plate moves relative to the fixed guide plate in the first direction is preferably 1 mm to 4 mm, for example, it can be 2 mm or 3 mm. In the embodiment of the present application, it is preferably 2 mm.
[0057] The adjustable osteotomy guide assembly provided in the present application can achieve osteotomy before drilling when used, ensuring that the flexion gap meets the requirements. There is no need to perform additional tibial resection to protect the tibia, and the problem of being unable to modify the position of the femoral prosthesis after drilling is avoided. The surgeon does not have to choose an overly thick gasket due to additional tibial resection, and the operation time is shortened, the patient trauma is reduced, and the surgeon's satisfaction is increased.
[0058] Optionally, a first plug hole 20 and a second plug hole 06 are formed on the side wall of the slide groove 21, and the first plug hole 20 and the second plug hole 06 are both through holes extending in the third direction, and the first plug hole 20, the second plug hole 06 and the posterior condyle osteotomy portion 03 are arranged in sequence in the first direction; a third plug hole 23 and a fourth plug hole 24 extending in the third direction are formed on the first main body portion 12, and the third plug hole 23, the fourth plug hole 24 and the posterior condyle osteotomy portion 03 are arranged in sequence in the first direction, and the distance between the first plug hole 20 and the second plug hole 06 is smaller than the distance between the third plug hole 23 and the fourth plug hole 24; the first plug hole 20 and the third plug hole 23 are used for plugging by a pin, and the second plug hole 06 and the fourth plug hole 24 are used for plugging by a pin. Before the first femoral posterior condyle osteotomy is performed, the pin is connected to the first socket 20 and the third socket 23 to fix the relative position between the movable guide plate and the fixed guide plate, so that when the first femoral posterior condyle osteotomy is performed, the movable guide plate and the fixed guide plate are not easily moved relative to each other, thereby improving the safety and accuracy of the operation. After the first femoral posterior condyle osteotomy is completed, the flexion gap is measured. If the flexion gap does not meet the requirement, the pin is removed from the first socket 20 and the second socket 06, and the movable guide plate is moved relative to the fixed guide plate in the direction from the posterior condyle osteotomy portion 03 to the first main body portion 12, so that the position of the second socket 06 corresponds to the position of the fourth socket 24, and the pin is inserted into the second socket 06 and the fourth socket 24. After the relative position between the movable guide plate and the fixed guide plate is fixed again, the second femoral posterior condyle osteotomy is performed, so that when the second femoral posterior condyle osteotomy is performed, the movable guide plate and the fixed guide plate are not easily moved relative to each other, thereby improving the safety and accuracy of the operation.
[0059] Optionally, two first jacks 20 and two second jacks 06 are formed on the second main body 10, and two third jacks 23 and two fourth jacks 24 are formed on the first main body 12. In this way, the two first jacks 20 are used to cooperate with the two third jacks 23 in a one-to-one correspondence, and the two second jacks 06 are used to cooperate with the two fourth jacks 24 in a one-to-one correspondence, which further improves the definition of the first main body 12 and the second main body 10.
[0060] Optionally, a first reference edge 22 extending in the third direction is formed on the movable guide plate, and a second reference edge 16 extending in the third direction is formed on the second main body 10, the second reference edge 16 is located at one end of the second main body 10 away from the posterior condyle osteotomy portion 03, and the second plug hole 06 and the fourth plug hole 24 are used to be plugged by a plug pin so that the first reference edge 22 and the second reference edge 16 are located on the same straight line. By setting the first reference edge 22 and the second reference edge 16, when adjusting the relative position of the movable guide plate and the fixed guide plate, it is possible to observe whether the second plug hole 06 and the second plug hole 06 are in a coaxial state. When the first reference edge 22 and the second reference edge 16 are in the same straight line, it can be considered that the second plug hole 06 and the fourth plug hole 24 are in a coaxial state. The plug pin can be passed through the second plug hole 06 and the fourth plug hole 24 in sequence to achieve a fixed connection between the movable guide plate and the fixed guide plate, which is convenient for medical personnel to operate the adjustable osteotomy guide plate assembly and improve surgical efficiency and reliability.
[0061] Optionally, the movable guide plate further includes an osteotomy reference block 11 formed on the first main body portion 12, the osteotomy reference block 11 protrudes from the first main body portion 12 from the side of the first main body portion 12 away from the second main body portion 10 in the second direction, and the first reference edge 22 is formed on the osteotomy reference block 11. By providing the osteotomy reference block 11 and locating the first reference edge 22 on the osteotomy reference block 11, since the osteotomy reference block 11 protrudes from the first main body portion 12, the first reference edge 22 is relatively more eye-catching, making it easier for the user to determine whether the first reference edge 22 and the second reference edge 16 are located in the same straight line, further improving the convenience of using the adjustable osteotomy guide plate assembly, and further improving the efficiency and reliability of surgery.
[0062] Optionally, the fixed guide plate further comprises a femoral fitting portion 15, the femoral fitting portion 15 is fixed to one end of the second main body portion 10 away from the posterior condyle osteotomy portion 03, the femoral fitting portion 15 is located on the side of the second main body portion 10 away from the notch of the slide groove 21, and a first femoral fitting surface 08 is formed on the femoral fitting portion 15, the first femoral fitting surface 08 is perpendicular to the third direction, and the first femoral fitting surface 08 faces the position of the second main body portion 10. By fitting the first femoral fitting surface 08 with the femur, the adjustable osteotomy guide plate assembly can be positioned more accurately before being connected to the femur, so as to facilitate the connection of the fixed guide plate with the femur, thereby improving the accuracy of the subsequent osteotomy surgery.
[0063] Optionally, a guide plate pressing area 14 is further formed on the femoral fitting portion 15, and in the third direction, the guide plate pressing area 14 and the first femoral fitting surface 08 are respectively located on opposite sides of the femoral fitting portion 15. In this way, when the fixed guide plate is fixed to the femur through the guide plate fixing portion 09, the medical staff can press the guide plate pressing area 14 to make the first femoral fitting surface 08 fit closely with the femur, thereby making it difficult for the adjustable osteotomy guide plate assembly to move relative to the femur, further improving the accuracy of the subsequent osteotomy surgery.
[0064] Optionally, two fixing holes 13 are formed on the femoral fitting portion 15, and the two fixing holes 13 are located on both sides of the guide plate pressing area 14 in a one-to-one correspondence in the first direction. When the adjustable osteotomy guide plate assembly is fixed to the femur, the femoral fitting portion 15 can be first fixed to the femur by two pins and two fixing holes 13. Since the first femoral fitting surface 08 can be tightly fitted to the femur by pressing the guide plate pressing area 14, when the femoral fitting portion 15 is fixed to the femur through the two fixing holes 13, the femoral fitting portion 15 is not easy to slide relative to the femur, thereby improving the stability and success rate of the entire process and improving work efficiency. In the embodiment of the present application, the fixing order can be marked near the two fixing holes 13. Preferably, the fixing hole 13 away from the fixing guide plate in the first direction is preferably the first fixing hole 13, and the fixing hole 13 close to the fixing guide plate is preferably the second fixing hole 13.
[0065] Optionally, a second femoral fitting surface 18 is further formed on the second main body 10, and the second femoral fitting surface 18 is arranged away from the chute 21, and the second femoral fitting surface 18 is perpendicular to the second direction. The first fitting surface and the second femoral fitting surface 18 are fitted to the femur together, so that the stability and reliability of the positioning when the fixed guide plate is connected to the femur are further improved, and the connection accuracy between the fixed guide plate and the femur is improved.
[0066] Optionally, an auxiliary hole 01 is formed on the first main body 12, the auxiliary hole 01 is a through hole extending in the second direction, the column hole 02 is arranged with the auxiliary hole 01 in the first direction, the column hole 02 is arranged near the posterior condylar osteotomy part 03, and a second through hole 19 is formed on the second main body 10, the second through hole 19 is a through hole extending in the second direction, and the second through hole 19 is a waist-shaped hole with a length direction parallel to the first direction, and the auxiliary hole 01 corresponds to the position of the second through hole 19. The pin can pass through the auxiliary hole 01 and the second through hole 19 to connect with the femur. Since the second through hole 19 is a waist-shaped hole, after the movable guide plate moves relative to the fixed guide plate, the position of the auxiliary hole 01 still corresponds to the position of the second through hole 19. In the embodiment of the present application, preferably, the fixed guide plate also includes an outer bonding block 07 for bonding with the outer bone surface, and the outer bonding block 07 and the guide plate fixing part 09 are located on the same side of the second main body 10.
[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. An adjustable osteotomy guide assembly, characterized in that: The invention comprises a movable guide plate and a fixed guide plate, wherein the movable guide plate comprises a first main body portion and a posterior condyle osteotomy portion connected to each other, wherein the first main body portion and the posterior condyle osteotomy portion are arranged in a first direction, a column hole is formed on the first main body portion, the column hole is a through hole extending in a second direction, and an osteotomy groove is formed on the posterior condyle osteotomy portion. The fixed guide plate includes a second main body portion and a guide plate fixing portion, the guide plate fixing portion is fixed to one side of the second main body portion in the third direction, a slide groove extending in the first direction is formed on the second main body portion, the first main body portion and the slide groove are slidably matched in the first direction, a first through hole is formed on the second main body portion, the first through hole is a through hole extending in the second direction, and the first through hole is a waist-shaped hole whose length direction is parallel to the first direction, the column hole corresponds to the position of the first through hole; the first direction, the second direction and the third direction are perpendicular to each other.
2. The adjustable osteotomy guide assembly according to claim 1, characterized in that: A first plug hole and a second plug hole are formed on the side wall of the slide groove, and the first plug hole and the second plug hole are both through holes extending in the third direction, and the first plug hole, the second plug hole and the posterior condyle osteotomy portion are arranged in sequence in the first direction; a third plug hole and a fourth plug hole extending in the third direction are formed on the first main body portion, and the third plug hole, the fourth plug hole and the posterior condyle osteotomy portion are arranged in sequence in the first direction, and a distance between the first plug hole and the second plug hole is smaller than a distance between the third plug hole and the fourth plug hole; the first plug hole and the third plug hole are used for plugging through a pin, and the second plug hole and the fourth plug hole are used for plugging through a pin.
3. The adjustable osteotomy guide plate assembly according to claim 2, characterized in that: Two first insertion holes and two second insertion holes are formed on the second main body portion, and two third insertion holes and two fourth insertion holes are formed on the first main body portion.
4. The adjustable osteotomy guide assembly according to claim 2, characterized in that: A first reference edge extending in the third direction is formed on the movable guide plate, and a second reference edge extending in the third direction is formed on the second main body portion, wherein the second reference edge is located at an end of the second main body portion away from the posterior condyle osteotomy portion, and the second insertion hole and the fourth insertion hole are used for being plugged in by a pin so that the first reference edge and the second reference edge are located on the same straight line.
5. The adjustable osteotomy guide assembly according to claim 4, characterized in that: The movable guide plate also includes an osteotomy reference block formed on the first main body portion. In the second direction, the osteotomy reference block protrudes from the first main body portion from a side of the first main body portion away from the second main body portion. The first reference edge is formed on the osteotomy reference block.
6. The adjustable osteotomy guide assembly according to claim 1, characterized in that: The fixed guide plate also includes a femoral fitting portion, which is fixed to one end of the second main body away from the posterior condyle osteotomy portion, and the femoral fitting portion is located on a side of the second main body away from the slide groove, and a first femoral fitting surface is formed on the femoral fitting portion, the first femoral fitting surface is perpendicular to the third direction, and the first femoral fitting surface faces the position of the second main body.
7. The adjustable osteotomy guide plate assembly according to claim 6, characterized in that: A guide plate pressing area is also formed on the femoral fitting portion, and in the third direction, the guide plate pressing area and the first femoral fitting surface are respectively located on opposite sides of the femoral fitting portion.
8. The adjustable osteotomy guide plate assembly according to claim 7, characterized in that: Two fixing holes are also formed on the femoral fitting portion, and the two fixing holes are located on both sides of the guide plate pressing area in a one-to-one correspondence in the first direction.
9. The adjustable osteotomy guide plate assembly according to claim 6, characterized in that: A second femoral fitting surface is also formed on the second main body portion. The second femoral fitting surface is arranged away from the sliding groove and is perpendicular to the second direction.
10. The adjustable osteotomy guide plate assembly according to any one of claims 1 to 9, characterized in that: An auxiliary hole is formed on the first main body portion, the auxiliary hole is a through hole extending in the second direction, the column hole and the auxiliary hole are arranged in the first direction, the column hole is arranged close to the posterior condyle osteotomy portion, and a second through hole is formed on the second main body portion, the second through hole is a through hole extending in the second direction, and the second through hole is a waist-shaped hole whose length direction is parallel to the first direction, and the auxiliary hole corresponds to the position of the second through hole.