Fixation Pin With Cylindrical Rod For Dental Drill Template
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Solution Overview
Problem
There is a need for a reliable and non-invasive means to temporarily fix dental drill templates in place during surgical procedures, as existing methods lack effective solutions for maintaining the precise positioning of these templates, which is crucial for successful implantation and minimizing damage to the jaw bone.
Innovation Solution
A fixation pin with a cylindrical rod and a bearing surface is used to securely attach the drill template without screws, providing a fast, detachable, and stable fixation, while preventing the intrusion of debris and offering a physical stop for depth limitation, made from materials like stainless steel or titanium for enhanced biocompatibility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a drill template is placed on the jaw or gum during surgery, then precise drilling guidance is achieved, but the template cannot be kept in position during use
Solution Approach 1:
The fixation pin is inserted into the drill template before the actual drilling operation begins. The pin's rod portion is placed into the template's bore hole in advance, establishing a secure connection between the template and the patient's jaw bone before the template is needed for precise drilling guidance.
Solution Approach 2:
The fixation pin acts as an intermediary element between the drill template and the patient's jaw bone. The pin's rod portion fits into the template's bore hole while its tip engages with the jaw bone, serving as a mediating structure that transfers and maintains the positional relationship between the template and the drilling site.
2Reliability
If a screw thread is used on the fixation pin for secure fixation, then fixation reliability is improved, but the bore hole may be damaged during multiple insertions
Solution Approach 1:
The screw thread feature is extracted from the fixation pin design. Instead of using a threaded rod that could damage the bore hole during repeated insertions and removals, the invention employs a smooth cylindrical rod that fits into the template's bore hole without engaging threads, thereby eliminating the risk of thread-related damage to the precious bore hole.
Solution Approach 2:
The fixation pin is designed as a disposable or single-use component. The smooth cylindrical rod can be easily inserted and removed multiple times without damage, and if needed, a new pin can be used for subsequent procedures. This approach prioritizes the preservation of the bore hole over the reusability of the fixation pin itself.
3Strength
If the fixation pin is inserted deeply into the bore hole for secure fixation, then fixation strength is improved, but the risk of aspiration and intrusion of debris increases
Solution Approach 1:
The fixation pin's rod portion is nested within the template's bore hole, creating a contained structure. The template's bore hole acts as an outer container that holds the pin's rod, preventing the pin from protruding excessively and reducing the risk of aspiration. The bearing surface of the pin's head rests against the template, nesting the fixation mechanism within the template structure.
Solution Approach 2:
The template's bore hole is prepared in advance to receive the fixation pin's rod portion. The bore hole's dimensions and position are predetermined to provide secure fixation while limiting the pin's insertion depth. This preliminary preparation ensures that the pin cannot be inserted too deeply, as the bore hole's geometry provides a natural stop.
4Reliability
If multiple fixation pins are used for drilling multiple holes, then complete fixation is achieved, but the complexity of the fixation system increases
Solution Approach 1:
The fixation pin is designed as a universal component that can be used for fixing multiple drill templates. The smooth cylindrical rod and bearing surface configuration are standardized, allowing the same pin design to be applied across different templates and drilling locations. This universality reduces the need for multiple specialized fixation devices.
Solution Approach 2:
The fixation system is segmented into independent, identical units. Each drill template can be fixed with its own fixation pin, and these pins are independent of each other. This segmentation allows for simple, modular fixation of multiple templates without creating a complex interconnected system. Each pin operates autonomously to secure its associated template.
Data Source
AI summary
A method including fixing a dental drill template with a fixation pin including a rod and a head attached to the rod. The dental drill template can be fixed by inserting the rod into the drill template or a sleeve provided in the drill template such that a bearing surface of the head bears at least partially on the drill template. The rod has a shape of an essentially circular cylinder and extends from the bearing surface of the head at an essentially right angle. A diameter of the head at the bearing surface is larger than the diameter of the rod.