Surgical Template Positioning Device with Spherical Recesses
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Solution Overview
Problem
Conventional surgical template positioning devices for tooth implants are limited by non-parallel positioning pins, leading to parameter reading errors and defective templates, resulting in deviation and dislocation during implantation, which can cause unnecessary complications and discomfort for patients.
Innovation Solution
A surgical template positioning device and method using three non-collinear spherical recesses and portions to determine a plane, allowing for accurate representation of the oral cavity and reducing the need for extra punctures, thereby improving the accuracy and comfort of the surgical process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional positioning pins are used in the surgical template, then the template can be manufactured, but parameter reading errors occur and positioning accuracy deteriorates when pins are not parallel
Solution Approach 1:
The patent replaces conventional cylindrical positioning pins with spherical positioning portions. The spherical shape allows for accurate positioning regardless of orientation, eliminating the parallelism requirement. The spherical recesses and portions provide point-contact positioning that accurately defines spatial coordinates without being sensitive to angular misalignment, thereby resolving the contradiction between measurement precision and reliability.
2Measurement precision
If extra puncture orientations are added to the gums, then more positioning points can be obtained, but patient discomfort increases and surgical time extends
Solution Approach 1:
The surgical template is designed to achieve accurate positioning using only three spherical recesses that define a plane, eliminating the need for additional puncture sites. The template's guiding hole provides universal guidance for implant placement regardless of the specific oral cavity geometry, allowing one template to serve multiple positioning functions without requiring extra punctures, thus improving patient comfort while maintaining positioning accuracy.
3Measurement precision
If multiple template replacement steps are used, then positioning accuracy can be improved, but surgical time and manufacturing cost increase
Solution Approach 1:
The surgical template is pre-manufactured with the guiding hole and spherical recesses configured according to the patient's specific anatomy and implant requirements determined from CT scans. This preliminary customization allows the template to achieve accurate positioning in a single application without requiring multiple replacements or adjustments during surgery, thereby improving surgical efficiency while maintaining high positioning accuracy.
Data Source
AI summary
A surgical template positioning device is provided, and has a template and a dental mold. The template has a first surface formed with at least three spherical recesses, a second surface, and a guiding hole. The dental mold has at least three spherical portions partially embedded in the at least three spherical recesses and an implanted hole having an axis the same as the guiding hole. The at least three spherical recesses have three spherical centers as being three vertices of a triangle, the axis passes through the triangle, and the at least three spherical portions have spherical centers corresponding with the three vertices of the triangle. A method of manufacturing the surgical positioning device is also provided.