CN116492009A - Accurate-fit additive manufacturing customized tibia high-level osteotomy guide plate and use method - Google Patents
Accurate-fit additive manufacturing customized tibia high-level osteotomy guide plate and use method Download PDFInfo
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- CN116492009A CN116492009A CN202310480651.4A CN202310480651A CN116492009A CN 116492009 A CN116492009 A CN 116492009A CN 202310480651 A CN202310480651 A CN 202310480651A CN 116492009 A CN116492009 A CN 116492009A
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- osteotomy
- additive manufacturing
- bone
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000654 additive Substances 0.000 title claims description 23
- 230000000996 additive effect Effects 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 210000002303 tibia Anatomy 0.000 title claims description 13
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 49
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 230000007547 defect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000001954 sterilising effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 7
- 238000007906 compression Methods 0.000 claims 7
- 238000002271 resection Methods 0.000 claims 2
- 230000000007 visual effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000001356 surgical procedure Methods 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application discloses accurate laminating's material increase makes customization formula shin high-order bone cutting baffle, including first baffle main part, second baffle main part and bracing piece, still including pressing the instruction portion, wherein, first pressing the instruction portion sets up in first baffle main part, and the second presses the instruction portion to set up in first baffle main part, and the part sets up in second baffle main part. The first guide plate body and the second guide plate body are configured into a combined state and an open state. The pressing indication part provided by the application is favorable for more accurately positioning the osteotomy guide plate, and has a non-visual identification effect. The application also provides a corresponding use method, wherein the method requires that two pressing indication parts are pressed vertically at the same time, so that the problems of uneven guide plate, overhead and the like in the prior art are solved.
Description
Technical Field
The application relates to the field of lower limb orthopedic surgical instruments, in particular to an additive manufacturing customized tibia high-level osteotomy guide plate with accurate lamination and a use method.
Background
In open tibial plateau osteotomies (HTOs), HTO guides (tibial plateau osteotomies guides) are commonly used medical instruments for performing precise procedures. Since HTO surgery is to cut and saw the inside of the tibia at a proper position to create a bone gap and spread it at a certain angle, and to implant a proper filler in the space of the created bone gap, to maintain the correct angle for the lower limb force lines and to increase the stability. Thus, making an accurate correction angle and maintaining the angle during surgery is one of the central factors of surgical accuracy and therapeutic effect.
HTO guides typically include two guide bodies. Before the sawing step, the two guide plate bodies are arranged close to each other and fixedly connected with the bone surface. After sawing, the two guide plate bodies guide the proximal tibia to separate from the distal tibia, respectively, and form a wedge-shaped bone defect space and correction angle. In this process, the most fundamental precondition is the precise fitting of the guide plate body to the bone surface. The human bone surface typically has a complex shape, so the abutment surface of the guide body also needs to have a shape corresponding to the bone surface.
In the prior art, to obtain a profile corresponding to a bone surface, preoperative planning based on medical image data is generally employed. And obtaining a three-dimensional model of the corresponding part of the bone of the patient in preoperative planning, and designing a guide plate main body model with a matching surface shape according to the surface of the three-dimensional model of the bone. And manufacturing the obtained guide plate main body model through a 3D printing process (additive manufacturing process) to obtain the guide plate main body.
Although the guide plate body used by the operator in the operation has an abutting surface accurately matched with the surface of the bone, in a practical application scene, a few failure cases of poor matching still occur, and the guide plate body is particularly lifted, deflected and the like. Since accurate fit of the fence body is a critical prerequisite for subsequent surgery, this problem has become critical to the overall accuracy of the surgery as well as the effectiveness of subsequent treatments.
Accordingly, those skilled in the art have focused on developing a precisely conforming additive manufacturing custom tibial plateau osteotomy guide and method of use to address the technical problems of the prior art.
Disclosure of Invention
To achieve the above objective, in one aspect, the present application provides a customized tibial high-level osteotomy guide plate manufactured by precisely fitting an additive, which comprises a first guide plate body, a second guide plate body and a supporting rod, and is characterized by further comprising a pressing indication part, wherein the pressing indication part is fixedly connected with the first guide plate body or the second guide plate body.
Further, the pressing indication device comprises two pressing indication parts, wherein a first pressing indication part is arranged on the first guide plate main body, a second pressing indication part is partially arranged on the first guide plate main body, and a part of the second pressing indication part is arranged on the second guide plate main body.
Further, the first and second fence bodies are configured in two states:
merging state: in the merging state, the first guide plate main body is fixedly connected with the second guide plate main body through a connecting sheet;
distracted state: in the open state, the first guide plate body is connected with the second guide plate body through the support rod.
Further, the first guide plate body includes a first guide wall, the second guide plate body includes a second guide wall, the first guide wall and the second guide wall are disposed in parallel in the combined state, and a gap between the first guide wall and the second guide wall forms an osteotomy guide groove.
Further, the osteotomy guiding slot passes through the second pressing indicator.
Further, the first guide plate body comprises a first connecting portion, the second guide plate body comprises a second connecting portion, the first connecting portion is connected with the supporting rod in the opening state, and the second connecting portion is connected with the supporting rod so as to realize the fixed connection of the first guide plate body and the second guide plate body.
Further, the pressing indication portion includes an annular protrusion structure.
Further, the annular protrusion structures are concentrically arranged.
Further, the annular protrusion of the first pressing indication portion is elliptical, and the annular protrusion of the second pressing indication portion is circular.
Another aspect of the present application provides a method for using a precisely attached additive manufacturing customized tibial high-level osteotomy guide plate, which adopts the precisely attached additive manufacturing customized tibial high-level osteotomy guide plate, and is characterized by specifically comprising the following steps:
step one, a preparation step: completing preoperative planning, and determining the position and correction angle of an osteotomy saw; sterilizing the precisely attached additive manufacturing customized tibia high-level osteotomy guide plate in the combined state; fully exposing bones of the osteotomy position;
step two, a positioning step: aligning the second pressing indication portion to the osteotomy saw position;
step three, laminating: simultaneously pressing the first pressing indication part and the second pressing indication part along the vertical direction to ensure that the first guide plate main body and the second guide plate main body are well attached to the surface of a bone;
step four, fixing: penetrating a Kirschner wire through the first guide plate main body and partially entering the bone, so that the first guide plate main body is fixedly connected with the bone; penetrating a Kirschner wire through the second guide plate main body and partially entering the bone, so that the second guide plate main body is fixedly connected with the bone;
step five, a step of expanding: disconnecting the connecting sheet, reversely expanding the first guide plate main body and the second guide plate main body to form a wedge-shaped bone defect space, wherein the angle of the wedge-shaped bone defect space is the correction angle;
step six, maintaining: the support rod penetrates into the first connecting part and the second connecting part so as to maintain the correcting angle.
Compared with the prior art, the technical scheme of the application has the following technical effects:
1. the application sets up two at least pressing indication parts on first baffle main part and second baffle main part. In the use method proposed in the present application, it is required to apply pressure to the pressing indication portion in the vertical direction at the same time to ensure the fitting of the guide plate main body to the bone surface. Solves the problem of poor lamination caused by deviation of pressing direction in the prior art.
2. In this application, the second pressing indication portion simultaneously plays a role in positioning. The second pressing indication part is arranged at the position of the osteotomy saw, so that the guide plate can be accurately positioned. Since the shape of the abutting surface of the guide plate is uniquely matched with the shape of the surface of the bone. More accurate positioning facilitates a more accurate fit.
3. The pressing indication part of the utility model adopts an annular protruding structure, has a non-visual identification effect, and enables a guide plate user to judge whether pressing is in place or not without naked eye observation.
The conception, specific structure, and technical effects of the present application will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present application.
Drawings
FIG. 1 is a schematic illustration of a prior art poor fit guide plate;
FIG. 2 is a schematic illustration of a prior art poor fit guide plate;
FIG. 3 is a schematic structural view of one embodiment of the present application;
FIG. 4 is a schematic structural view of one embodiment of the present application;
FIG. 5 is a schematic structural view of one embodiment of the present application;
FIG. 6 is a schematic diagram of a use state of an embodiment of the present application in a merge state;
fig. 7 is a schematic view of an embodiment of the present application in use in a distracted state.
Detailed Description
The following description of the preferred embodiments of the present application will make the technical contents thereof more clear and easier to understand. This application may be embodied in many different forms of embodiments and the scope of protection of this application is not limited to only the embodiments set forth herein. In the present application, the descriptions of "upper", "lower", "left", "right", "inner" and "outer" are descriptions according to the relative positions in the drawings, and are merely for structural description, not for limitation.
Examples
As shown in fig. 1 and 2. A tibial high osteotomy (HTO) guide generally includes a first guide body 1, a second guide body 2. In the HTO procedure, the first guide body 1 is attached to and fixedly connected with the proximal tibia 51, the second guide body 2 is attached to and fixedly connected with the distal tibia 52, and then osteotomy and distraction operations are performed. However, those skilled in the art have found that, in the prior art, although the shape of the bonding surface of the guide plate and the bone manufactured by the additive manufacturing (3D printing) process can be uniquely matched, in the case of surgical operation, the guide plate and the bone surface cannot be well bonded due to the insufficient accuracy of the placement position of the guide plate by the operator or due to the deviation of the pressing force position, so that a deviation space 7 is formed, as shown by the position surrounded by the dotted line in fig. 1 and 2. Since the accuracy of the subsequent sawing, correction, supporting operations, and even the entire procedure of HTO surgery depends on the accuracy of the guide plate attachment, the impact of the attachment failure is severe and profound. More critical is that the deflection space 7 is difficult to observe with the naked eye in some cases, since the bone and the guide plate are made of harder materials. For example, the protrusions of the bone surface do not exactly match the depressions on the abutment surface of the guide plate, resulting in a degree of "overhead" which creates a deflection space 7 between the abutment surface of the guide plate and the bone surface that is difficult to observe. Leading to the operator to mistakenly follow the fitting is finished so as to continue the operation, so that the effect of the whole operation is affected.
As shown in fig. 3-5. The customized tibia high-level osteotomy guide plate for accurate lamination and additive manufacturing provided in the embodiment comprises a first guide plate main body 1 and a second guide plate main body 2. The first guide plate main body 1 and the second guide plate main body 2 are made of polylactic acid materials through an additive manufacturing (3D printing) process. As the connection manner of the first guide plate body 1 and the second guide plate body 2 is different, the present embodiment has two different states:
merging state: in the combined state, the first guide plate body 1 and the second guide plate body 2 are disposed close to each other and fixedly connected by the connecting piece 33.
Distracted state: in the open state, the first guide plate body 1 is connected with the support rod 4, and the second guide plate body 2 is connected with the support rod 4, so that the first guide plate body 1 and the second guide plate body 2 maintain opposite open states.
Specifically, the first guide plate body 1 includes a first base 11 and a first abutment surface 15. The first abutment surface 15 is the surface of the first base 11 that is adjacent to the bone. The first abutment surface 15 is used to effect abutment of the first guide body 1 with the proximal tibial end 51. The second guide plate body 2 includes a second base 21 and a second bonding surface 25. The second abutment surface 25 is the surface of the second base 21 adjacent the bone. The second abutment surface 25 is used to effect abutment of the second guide plate body 1 with the distal tibial end 52.
Fig. 3 is a schematic structural diagram of the present embodiment in a combined state. The first guide plate body 1 further comprises a first guide wall 12. The first guide wall 12 is fixedly connected with the first base 11. The first guide wall 12 is provided on the first base 11 at an edge in the direction close to the second fence body 2. Preferably, the first guide wall 12 is disposed substantially perpendicular to the first base 11. The second guide plate body 2 further comprises a second guide wall 22. The second guide wall 22 is fixedly connected with the second base 21. The second guide wall 22 is provided on the second base 22 at an edge in the direction close to the first fence body 1. Preferably, the second guide wall 22 is disposed substantially perpendicular to the second base 21. In the combined state as shown in fig. 3, the first guide wall 12 and the second guide wall 22 are disposed close to and in parallel, and a gap formed therebetween forms a first osteotomy guiding groove 31. In this embodiment, the first guide wall 12 and the second guide wall 22 are preferably both in a fold line shape. When the first guide wall 12 and the second guide wall 22 are disposed close to each other and parallel to each other, a gap is formed in a folded shape, wherein one section forms a first osteotomy guiding groove 31, and the other section forms a second osteotomy guiding groove 32. In the state shown in fig. 3, the first guide wall 12 and the second guide wall 22 are fixedly connected through a connecting sheet, so that the first guide plate body 1 and the second guide plate body 2 are fixedly connected, and a stable first osteotomy guide groove 31 and a stable second osteotomy guide groove 32 are formed.
The first guide plate body 1 further includes a first fixing hole 14. The plurality of first fixing holes 14 are disposed at discrete positions on the first base 11 for the fixing components (such as k-wires) to pass through, so as to achieve the fixing and fitting between the first guide plate body 1 and the bone surface. The second guide plate body 2 further includes a second fixing hole 24. The second fixing holes 24 are disposed at discrete positions on the second base 21 for the fixing components (such as k-wires) to pass through, so as to achieve the fixing fit between the second guide plate body 2 and the bone surface. In the present embodiment, preferably, two first fixing holes 14 and two second fixing holes 24 are provided.
The first fence body 1 comprises a first connection portion 13 for providing a connection of the first fence body 1 to the support bar 4. The second fence body 2 comprises a second connection portion 23 for providing a connection of the second fence body 2 to the support bar 4. Specifically, the supporting rod 4 is in a cylindrical shape with uniform thickness, the first connecting portion 13 and the second connecting portion 23 are in a strip-shaped annular structure, and have a certain width, and the inner diameter of the first connecting portion 13 and the second connecting portion 23 are matched with the outer diameter of the supporting rod 4, so that the supporting rod 4 can penetrate through the first connecting portion 13 and the second connecting portion 23 at a specific angle.
In order to achieve accurate fitting, the present embodiment provides the first and second pressing indication portions 61 and 62 on the first and second fence bodies 1 and 2. The first pressing indication portion 61 and the second pressing indication portion 62 are provided on the outer surfaces of the first base 11 and the second base 12. As shown in fig. 3, the first pressing indication portion 61 is elliptical and is provided on the first base surface of the first guide plate body. The second pressing indication portion 62 has a circular shape, and a part of the second pressing indication portion 62 having a circular shape is provided on the first base surface, a part thereof is provided on the second base surface, and the middle thereof is penetrated by the first osteotomy guiding groove 31. The surfaces of the first pressing indication portion 61 and the second pressing indication portion 62 are provided with annular protruding structures for generating a non-visual recognition effect. Even if the user does not need to observe with naked eyes, the user can judge whether the pressing position is correct or not only by touching with the hand. In the present embodiment, the annular projection structure of the first pressing indication portion 61 is preferably an oval shape concentrically arranged, and the annular projection structure of the second pressing indication portion 62 is preferably a circular shape concentrically arranged. The annular protrusion structures with different shapes can also have a non-visual recognition effect, and can distinguish the annular protrusion structures from the annular protrusion structures without visual observation.
The application further provides a use method of the embodiment, which specifically comprises the following steps:
step one, a preparation step: to fabricate an additively manufactured custom HTO guide plate, medical image data, such as CT, MRI, etc., of a patient-related region is first acquired. And carrying out three-dimensional reconstruction by specific medical three-dimensional reconstruction software to obtain a bone model of the patient, thereby obtaining the surface shape of the bone surface. And (3) performing preoperative planning according to the three-dimensional bone model, and determining operation key information such as cutting and sawing positions, correction angles and the like. And designing the HTO guide plate, in particular the binding surface of the HTO guide plate by adopting a matching algorithm according to the shape of the bone surface. Printing the designed guide plate three-dimensional model by a 3D printer to obtain the HTO guide plate for operation. Before using the HTO guide plate, the patient osteotomy site is fully exposed, and the HTO guide plate is sterilized to complete the preparation step.
Step two, a positioning step: the positioning step is a precondition of precise attachment, and in this embodiment, the position of the second pressing indication portion 62 is the target position of the osteotomy saw, so that the second pressing indication portion of the HTO guide plate in the combined state is aligned with the osteotomy saw position determined in the preoperative plan, as shown in fig. 6. At this time, since the first connecting portion 31 and the second connecting portion 32 are in a misaligned state, the support rod 4 can pass through only the first connecting portion 31 but cannot pass through the second connecting portion 32, and thus the first guide plate body 1 and the second guide plate body are fixedly connected by the connecting piece 33.
Step three, laminating: the first pressing indication portion 61 and the second pressing indication portion 62 are pressed in the vertical direction at the same time, so that the first guide plate body 1 and the second guide plate body 2 are well adhered to the bone surface. In the prior art, a user of the guide plate may have a deviation in pressing position, a deviation in force direction, or any position of the guide plate according to the user's experience preference, thereby resulting in a failure mode of poor fitting. In the method, two pressing indication parts are required to be pressed simultaneously, and the positions of the two pressing indication parts are limited, so that the matching flatness of the HTO guide plate and the surface of the skeleton can be ensured, and the accurate positioning is assisted, so that failure modes such as overhead, warping and the like are avoided.
Step four, fixing: penetrating the kirschner wire through the first fixing hole 14 and partially into the bone so that the first guide plate body 1 is fixedly connected with the proximal tibia 51; penetrating the k-wire through the second fixing hole 24 and partially into the bone so that the second guide plate body is fixedly connected with the bone;
step five, a step of expanding: after the osteotomy saw is performed along the first osteotomy guiding groove 31 and the second osteotomy guiding groove 32, the connecting piece 33 is disconnected, the first guide plate body 1 and the second guide plate body 2 are spread in opposite directions to form a wedge-shaped bone defect space, and when the angle of the wedge-shaped bone defect space is equal to the correction angle, the first connecting portion 13 is aligned with the second connecting portion 23. The support rod 4 passes through the first connecting part 13 and the second connecting part 23 at the same time, as shown in fig. 7;
step six, maintaining: the support rod 4 is inserted into the first connecting part 13 and the second connecting part 23 to maintain the correction angle.
Preferred embodiments of the present application are described in detail above. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the present application by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the conception of the present application shall be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a customized shin bone high-order bone baffle that cuts of additive manufacturing of accurate laminating, includes first baffle main part, second baffle main part and bracing piece, its characterized in that still includes presses the instruction portion, press the instruction portion with first baffle main part or second baffle main part fixed connection.
2. The precisely fitted additive manufacturing custom tibial high osteotomy guide plate of claim 1, comprising two of the compression indicators, wherein a first compression indicator is disposed on the first guide plate body and a second compression indicator is disposed partially on the first guide plate body and partially on the second guide plate body.
3. The precision-fit additive manufacturing custom tibial high osteotomy guide of claim 2, wherein the first guide body and the second guide body are configured in two states:
merging state: in the merging state, the first guide plate main body is fixedly connected with the second guide plate main body through a connecting sheet;
distracted state: in the open state, the first guide plate body is connected with the second guide plate body through the support rod.
4. The precision-fit additive manufacturing custom tibial high osteotomy guide of claim 3, wherein the first guide body comprises a first guide wall and the second guide body comprises a second guide wall, the first guide wall and the second guide wall being disposed in parallel in the combined state, a gap between the first guide wall and the second guide wall forming an osteotomy guide slot.
5. The precision-fit additive manufacturing custom tibial plateau osteotomy guide of claim 4, wherein the osteotomy guide slot passes through the second compression indicator.
6. The precision-fit additive manufacturing custom tibial high osteotomy guide of claim 5, wherein the first guide body comprises a first connection portion and the second guide body comprises a second connection portion, the first connection portion being connected to the support bar in the distracted state and the second connection portion being connected to the support bar to effect a fixed connection of the first guide body to the second guide body.
7. The precision-fit additive manufacturing custom tibial plateau resection guide of claim 6, wherein the compression indicator includes an annular projection structure.
8. The precision-fit additive manufacturing custom tibial plateau resection guide of claim 7, wherein the annular projection structures are concentrically disposed.
9. The precision-fit additive manufacturing custom tibial high osteotomy guide of claim 8, wherein the annular projection of the first compression indicator is elliptical and the annular projection of the second compression indicator is circular.
10. A method for using a precisely attached additive manufacturing custom-made tibial high-level osteotomy guide plate, which is characterized by comprising the following steps of:
step one, a preparation step: completing preoperative planning, and determining the position and correction angle of an osteotomy saw; sterilizing the precisely attached additive manufacturing customized tibia high-level osteotomy guide plate in the combined state; fully exposing bones of the osteotomy position;
step two, a positioning step: aligning the second pressing indication portion to the osteotomy saw position;
step three, laminating: simultaneously pressing the first pressing indication part and the second pressing indication part along the vertical direction to ensure that the first guide plate main body and the second guide plate main body are well attached to the surface of a bone;
step four, fixing: penetrating a Kirschner wire through the first guide plate main body and partially entering the bone, so that the first guide plate main body is fixedly connected with the bone; penetrating a Kirschner wire through the second guide plate main body and partially entering the bone, so that the second guide plate main body is fixedly connected with the bone;
step five, a step of expanding: disconnecting the connecting sheet, reversely expanding the first guide plate main body and the second guide plate main body to form a wedge-shaped bone defect space, wherein the angle of the wedge-shaped bone defect space is the correction angle;
step six, maintaining: the support rod penetrates into the first connecting part and the second connecting part so as to maintain the correcting angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310480651.4A CN116492009A (en) | 2023-04-28 | 2023-04-28 | Accurate-fit additive manufacturing customized tibia high-level osteotomy guide plate and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310480651.4A CN116492009A (en) | 2023-04-28 | 2023-04-28 | Accurate-fit additive manufacturing customized tibia high-level osteotomy guide plate and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116492009A true CN116492009A (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310480651.4A Pending CN116492009A (en) | 2023-04-28 | 2023-04-28 | Accurate-fit additive manufacturing customized tibia high-level osteotomy guide plate and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116492009A (en) |
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2023
- 2023-04-28 CN CN202310480651.4A patent/CN116492009A/en active Pending
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