Maxilla Repositioning Implant Structure for Stable Bone Fixation
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Solution Overview
Problem
Existing maxillary repositioning implants are difficult to manufacture, lack stability, result in unaesthetic appearance, cause discomfort, and have common complications and adverse medical side effects.
Innovation Solution
A maxillary repositioning implant with a base and connecting section, featuring connecting webs extending from the plate to the edge of screw holes, optimized for patient-specific bone geometry using CAD/CAM and sintering processes, ensuring biocompatibility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional maxillary repositioning implants are used, then fixation function is provided, but manufacturing difficulty increases and stability is insufficient
Solution Approach 1:
The implant is divided into distinct functional components: a base portion for fixation to the residual maxillary segment, a connecting portion with connecting webs, and a plate portion for the repositioned segment. This segmentation allows each component to be optimized independently for its specific function while simplifying the overall manufacturing process through modular construction
Solution Approach 2:
Different regions of the implant have different structural characteristics optimized for their specific functions. The base portion has a specific thickness and screw hole configuration for stable fixation, the connecting webs have optimized geometry for stress distribution, and the plate portion has appropriate thickness for bone attachment. This local optimization improves overall stability without unnecessarily complicating manufacturing
2Reliability
If conventional maxillary repositioning implants are used, then fixation function is provided, but material usage increases and biocompatibility decreases
Solution Approach 1:
The design removes unnecessary material from conventional implant structures. The connecting webs are optimized to use minimal material while maintaining structural integrity, and the plate thickness is reduced to only what is necessary for fixation. This extraction of excess material reduces overall material usage while improving biocompatibility by reducing foreign body burden
Solution Approach 2:
The implant utilizes optimized thickness parameters and material distribution that change based on local structural requirements. The connecting webs have specific thickness variations, and the plate portions have optimized thickness values that provide sufficient strength with minimal material. These parameter optimizations reduce total material usage while maintaining biocompatibility
3Ease of operation
If conventional maxillary repositioning implants are used, then fixation function is provided, but aesthetic appearance deteriorates and patient comfort decreases
Solution Approach 1:
The implant is designed as a temporary fixation device that will be removed after bone healing occurs. This disposable approach allows optimization for aesthetics and comfort without concern for long-term wear, as the implant is removed once its fixation purpose is fulfilled, eliminating chronic aesthetic and comfort issues
Solution Approach 2:
The implant shape is optimized locally in the regions visible through soft tissue or affecting patient comfort. The connecting webs and plate contours are designed to minimize soft tissue disruption and aesthetic compromise, with specific attention to surface characteristics and overall form in areas that interact with surrounding tissues
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The implant achieves greater strength, reduced material usage, improved biocompatibility, and aesthetic appearance while minimizing complications and adverse effects.
Implementation Method 1
Sintering processes, such as laser sintering, for example, selective laser sintering, can typically be used for this purpose.
Data Source
Figure 1~7
Figure 8~14
AI summary
The invention relates to a maxilla repositioning implant (1) for three-dimensional precise alignment of a maxilla displacing portion (5) relative to a remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) comprises a base (2), which has at least one plate (7) in which screw holes (10) are provided, wherein a portion of the material of the plate (7) defines, as a rim (11), a respective screw hole (10) that is provided for receiving a bone screw (17) in order to ensure fastening, via the bone screw (17) to be inserted into the respective screw hole (10), to the remaining maxilla portion (3) that is fixed to the skull, wherein the maxilla repositioning implant (1) also comprises a connection portion (4), which is spaced apart from the base (2) by connecting bridges (6), wherein the connection portion (4) comprises at least one plate (7) in which screw holes (10) are provided, and wherein a portion of the material of this plate (7) defines, as a rim (11), a respective screw hole (10) in order to ensure fastening, via a bone screw (17) to be inserted into the respective screw hole (10), to the maxilla displacing portion (5), wherein two connecting bridges (6) extend from the plate (7) of the connection portion (4) to the edge (11) of a screw hole (10) in the plate (7) of the base (2).