Surgical Guide with Non-Contact Drill Path for Bone Prosthesis
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Solution Overview
Problem
Current methods for producing bone prostheses, particularly for dental and hearing implants, face challenges such as poor precision, increased risk of accidents, and the need for post-operative interventions due to manual drilling and the complexity of producing surgical guides without spatial markers, leading to suboptimal aesthetic, functional, and hygienic outcomes.
Innovation Solution
A method and equipment that involve creating a surgical guide with artificial prostheses and holes, allowing for precise drilling through a model without direct contact between the drill and guiding elements, using external guiding means to prevent friction and blockages, enabling the placement of implant analogs and subsequent construction of a final prosthesis before implantation, ensuring accurate positioning and reducing patient harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If drilling is performed through guiding cylinders during implant placement, then implant positioning precision is improved, but friction and blockage risks increase due to contact between drill and guiding cylinder walls
Solution Approach 1:
The patent extracts the guiding function from the drilling path by creating a guiding hole that is larger than the drill diameter, allowing the drill to pass through without contact. The guiding cylinder's internal diameter is intentionally made greater than the external diameter of the drill, separating the guiding function from the drilling function and eliminating friction-related reliability issues while maintaining positioning precision.
Solution Approach 2:
The patent introduces an intermediary space (the gap between the drill and guiding cylinder walls) that allows the drill to pass through without direct contact. This intermediary space acts as a mediator that enables both precise guidance and friction-free drilling, resolving the contradiction between precision and reliability.
2Device complexity
If manual drilling is performed without external guiding means, then device complexity is reduced, but drilling precision and patient safety deteriorate due to lack of spatial markers
Solution Approach 1:
The patent applies preliminary action by pre-creating guiding holes in the bone with precise spatial markers before implant placement. These guiding holes serve as pre-established guides that simplify the subsequent drilling operation, providing both precision and safety without requiring complex external guiding devices during the actual drilling process.
Solution Approach 2:
The patent creates a physical copy of the spatial arrangement by forming guiding holes that replicate the desired implant positions and orientations. This copying approach transfers the precision planning to the actual bone structure, enabling accurate implant placement without complex external guiding systems.
3Manufacturing precision
If drilling is performed with tight-fitting guiding cylinders, then drilling precision is improved, but friction increases causing motor braking and heat generation
Solution Approach 1:
The patent extracts the friction element from the drilling system by designing the guiding hole to be larger than the drill, removing the contact interface that causes friction and energy loss. This allows precise guidance to be maintained through the geometric constraint of the guiding hole while eliminating the energy-consuming friction that occurs with tight-fitting cylinders.
Data Source
AI summary
Method for producing a bone prosthesis, comprising forming a surgical guide (1) equipped with at least one artificial prosthesis (150 and with at least a first hole passing through each artificial prosthesis in a predetermined orientation, placing the surgical guide on a model (2), drilling a second hole (16) through the model with the aid of a drill (8) passed through each first hole, the passage of the drill through the corresponding first hole taking place without contact therewith, and guiding the drill in said predetermined orientation with the aid of drill introduction means (10, 11) situated outside said first hole.