Device to guide fibula shaping

Abstract

A device for guiding fibula shaping, characterized in that it includes a first shaping body and a second shaping body, the first shaping body and the second shaping body are assembled to form a device for guiding fibula shaping, and the length of the device for guiding fibula shaping is greater than or equal to 12 cm. The device of the present invention uses a plurality of shaping bodies to form a device for guiding fibula shaping, and manufactures a long guide plate in sections, effectively avoiding the occurrence of processing deformation and warping caused by a 3D manufacturing process, and more accurately guiding the shaping of the fibula is conducive to performing shaping surgery on the fibula in tissue repair surgery.

Description

Technical Field

[0001] The invention relates to an auxiliary tool for processing, in particular to a device for guiding the shaping of fibula in the restoration of maxillofacial surgery and orthopedics. Background Art

[0002] Digital-aided design has been used to treat severe jaw defects and deformities in the maxillofacial region, such as congenital maxillofacial deformities, maxillofacial defects caused by trauma or tumors. Through computer-aided design and 3D printing technology to make models or guides, combined with microvascular anastomosis, free bone transplantation and orthognathic surgery, precise medical treatment is implemented to restore the patient's function and appearance.

[0003] The guide plate consists of a guiding part and a positioning part. The positioning part is used to fix the entire guide plate on the tissue. The guiding part is arranged on the positioning part. Its specific position and angle are determined according to computer-aided design so as to perform precise surgery on the tissue.

[0004] The designed guide plate is manufactured using 3D printing technology. When printing the guide plate with photosensitive resin and post-processing, the molded guide plate often deforms, warps, twists and bends, which causes the guide plate to deviate from the design requirements and causes difficulties for subsequent operations. The fibula is one of the two long bones in the human lower leg. The deformation, warping, twisting and bending of the fibula guide plate are more significant. Although the 3D printing production process is controlled, such as: nozzle temperature, nozzle distance, printing speed and layer thickness control, it is still difficult to avoid the deformation of the guide plate from time to time. Preliminary experiments have found that the deformation of the fibula guide plate is positively correlated with the length of the guide plate. The deformation error caused by 3D printing processing needs to be compensated in the design to offset the error. Summary of the invention

[0005] One purpose of the present invention is to provide a device for guiding the shaping of the fibula to avoid deformation, warping, torsion and bending during 3D production, reduce design deviations, and facilitate osteotomy surgery on the fibula.

[0006] Another object of the present invention is to provide a device for guiding fibula shaping, which is formed by splicing multiple sections of the structure to avoid misalignment of the sections during splicing, so as to meet the surgical requirements of guiding fibula shaping.

[0007] The invention provides a device for guiding the shaping of the fibula, comprising a first shaping body and a second shaping body. The first shaping body and the second shaping body are assembled to form the device for guiding the shaping of the fibula.

[0008] Another device for guiding fibula shaping provided by the present invention also includes a third shaping body, and along the axial direction formed by assembling the first shaping body and the second shaping body, the third shaping body is assembled with the first shaping body or the second shaping body.

[0009] Another device for guiding fibula molding provided by the present invention also includes a plurality of molding bodies. Along the axial direction formed by the first molding body and the second molding body after being assembled, each molding body is assembled with the first molding body or the second molding body after being connected in an end-to-end manner, or a part of the molding bodies is assembled with the first molding body after being connected in an end-to-end manner, and the other part is assembled with the second molding body.

[0010] The present invention provides another device for guiding the shaping of the fibula. Various shaping bodies, such as a first shaping body and a second shaping body, generally include a guiding portion and a positioning portion. The positioning portion is used to contact and fix the entire device to the fibula. The guiding portion is arranged on the positioning portion to guide the position and direction of the saw, such as a drilling guide portion and a saw guide portion.

[0011] The present invention provides various devices for guiding fibula shaping. Various shaping bodies, such as a first shaping body and a second shaping body, include at least one component, so that two components are matched and buckled to realize the assembly of the shaping bodies.

[0012] An assembly component for various devices for guiding fibula shaping provided by the present invention comprises:

[0013] The first component includes one or more assembly grooves, a spacer is arranged between each assembly groove, a first assembly surface is formed on the spacer, an assembly seat is arranged in a groove cavity of the assembly groove, so that the space of the groove cavity has an "L"-shaped cross section, and the groove bottom of the assembly groove extends toward the groove cavity opening to form an assembly lip; and

[0014] The second component includes a second assembly surface and one or more assembly parts, each of which is arranged on the second assembly surface:

[0015] The second assembly surface is assembled with the first assembly surface, and each assembly part is placed in the groove cavity of the assembly groove and contacts with the assembly seat surface.

[0016] When the first component is assembled with the second component, the side surface and the front end surface of the assembling part contact the surface of the groove cavity of the assembling groove, and the bottom surface of the assembling part is assembled with the assembling lip and maintains surface contact.

[0017] Another assembly component for various devices for guiding fibula shaping provided by the present invention comprises:

[0018] The first component, the second component, the first connector and the second connector, the first connector is assembled on the first component and the second component, the second connector is assembled on the first component and the second component, the first connector and the second connector are not coplanar. Preferably, the axial direction of the first connector is perpendicular to the axial direction of the second connector.

[0019] The various devices for guiding fibula shaping provided by the present invention have a length of more than 12 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a device for guiding fibula shaping of the present invention;

[0021] Figure 2 A schematic structural diagram of an embodiment of a molded body of the present invention provided with an assembly component;

[0022] Figure 3 The figure is a schematic structural diagram of another embodiment of the molded body of the present invention provided with assembly components. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The embodiments of the present invention are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of a device for guiding fibula shaping according to the present invention. Figure 2 The structure diagram of an embodiment of the molded body of the present invention with an assembly component is shown in FIG. Figure 3 FIG. 2 is a schematic diagram of another embodiment of the molded body of the present invention provided with an assembly component. Figure 1 , Figure 2 and Figure 3 As shown, a device for guiding fibula shaping in this embodiment includes a first shaping body 100 and a second shaping body 200. A first component 300 is disposed at one end of the first shaping body 100, and includes more than one assembly groove 310. A spacer 320 is disposed between each assembly groove, a first assembly surface 321 is formed on the spacer 320, and an assembly seat 311 is disposed in the groove cavity of the assembly groove 310, so that the space of the groove cavity has a cross section 312 shaped like an "L". Figure 2 As shown, if the cross section 312 is rotated by an angle (eg, 90°), a cross section shaped like an "L" can be observed. The bottom of the assembly groove extends toward one side of the groove cavity opening to form an assembly lip 330.

[0025] The second component 400 is arranged at one end of the second molded body 200, and includes a second assembly surface 410 and one or more assembly parts 420. When the second component 400 is assembled with the first component 300, the second assembly surface 410 is assembled with the first assembly surface 321. Each assembly part 420 is arranged on the second assembly surface 410, placed in the groove cavity of the assembly groove 310, and in surface contact with the assembly seat 311. In this embodiment, the side surface 421 and the front end surface of the assembly part 420 are also in contact with the surface of the groove cavity of the assembly groove. The bottom surface 423 of the assembly part is also assembled with the assembly lip 330 and maintains surface contact.

[0026] The first plug connector (not shown) is assembled to the first component and the second component, and the second plug connector (not shown) is assembled to the first component and the second component, and the first plug connector and the second plug connector are not coplanar. In this embodiment, the first plug connector is assembled to the first component hole 340 and the second component hole 430, and the axial direction of the first plug connector is perpendicular to the axial direction of the second plug connector.

[0027] In a similar assembly manner as described above, various molded bodies, such as the first molded body 300 and the second molded body 400, etc., include at least one component, so that the components are matched and fastened to realize the assembly of the molded bodies. In this embodiment, along the axial direction formed by the assembly of the first molded body 300 and the second molded body 400, a plurality of molded bodies are assembled with the first molded body or the second molded body after being connected in an end-to-end manner, or a part of the molded bodies are assembled with the first molded body after being connected in an end-to-end manner, and the other part is assembled with the second molded body, so as to form a complete device for guiding the shaping of the fibula.

[0028] The various molded bodies of this embodiment generally include a guide portion 500 and a positioning portion 600 . The positioning portion 600 is used for the entire device to contact and fix the fibula. The guide portion 500 is arranged on the positioning portion and includes a drilling guide portion 510 and a saw guide portion 520 .

[0029] The technical solution provided in this embodiment adopts a plurality of molding bodies to form a device for guiding the shaping of the fibula, and manufactures the long guide plate in sections, which effectively avoids the processing deformation and warping caused by the 3D manufacturing process. More precise guidance of the shaping of the fibula is beneficial to the shaping surgery of the fibula during tissue repair surgery.

[0030] Each molded body is made into a guide plate, which is precisely assembled with each other in a unique assembly method to improve the matching accuracy between the guide plate and the fibula, thereby improving the fit with the fibula, clearly guiding the position and direction of the electric saw, and performing osteotomy according to the preoperative plan.

[0031] Making each molded body into a guide plate and then assembling it can not only realize the simultaneous manufacturing of multiple molded bodies, improve processing efficiency, save time for overall 3D manufacturing, but also reduce manufacturing errors, avoid repeated manufacturing due to error correction, and reduce the failure rate of guide plate manufacturing.

[0032] By making each molded body into a guide plate, timely adjustment of the local structure is also possible, which not only improves the convenience of surgical operation but also reduces manufacturing costs.

Claims

1. Application of a device for guiding fibula shaping to avoid deformation, warping, torsion and bending in 3D production, characterized in that The device comprises a first molding body and a second molding body, wherein the first molding body and the second molding body are assembled to form a device for guiding the shaping of the fibula, and the length of the device for guiding the shaping of the fibula is greater than or equal to 12 cm; as well as An assembly comprising: A first component, comprising more than one assembly groove, a spacer is arranged between each of the assembly grooves, a first assembly surface is formed on the spacer, an assembly seat is arranged in the groove cavity of the assembly groove, so that the space of the groove cavity has a cross-section shaped like an "L", and the groove bottom of the assembly groove extends toward the side of the groove cavity opening to form an assembly lip; and A second component comprises a second assembly surface and one or more assembly parts, each of which is arranged on the second assembly surface; A first connector, which is assembled on the first component and the second component; A second connector, which is assembled on the first component and the second component; The second assembly surface is assembled with the first assembly surface, and each of the assembly parts is placed in the groove cavity of the assembly groove and contacts with the assembly seat surface; The side surface and the front end surface of the assembly part are in contact with the surface of the groove cavity of the assembly groove individually or simultaneously; The bottom surface of the assembly part is assembled with the assembly lip and maintains surface contact; The first plug-in connector and the second plug-in connector are not coplanar.

2. The use according to claim 1, characterized in that The axial direction of the first connector is perpendicular to the axial direction of the second connector.

3. The use according to claim 1, characterized in that It further includes a plurality of other molded bodies, along the axial direction formed by the assembly of the first molded body and the second molded body, each of the molded bodies is connected in an end-to-end manner and then assembled with the first molded body or with the second molded body, or a part of the molded bodies is connected in an end-to-end manner and then assembled with the first molded body, and the other part is assembled with the second molded body.

4. The use according to claim 1, characterized in that The first molded body or the second molded body includes a guiding part and a positioning part. The positioning part is used to make the whole device contact and fix with the fibula. The guiding part is arranged on the positioning part to guide the action position and direction of the saw.

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