Dental Drill Guide Sleeve Centering Mechanism

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Solution Overview

Problem

Current dental implant drilling methods require multiple drill bits and guide sleeves of varying diameters and lengths, leading to increased complexity, risk of errors, and contamination, while failing to ensure perfect coaxiality and accurate depth control, which can result in necrosis and poor geometrical accuracy.

Innovation Solution

A centering and guiding device for dental handpieces that uses a single tubular guide sleeve with support means to maintain coaxiality and longitudinal guidance, featuring a smooth cylindrical intermediate section for drill bits of different diameters, and adjustable depth control to minimize parts and reduce error risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If multiple drill bits and guide sleeves of varying diameters and lengths are used, then drilling can be performed in multiple passes to control heating and prevent necrosis, but the complexity of the procedure increases and the risk of errors and contamination increases

Engineering Contradiction:

Improveheating control of jawboneVSAvoidnumber of parts

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The guide sleeve is designed with a single internal bore diameter that can accommodate multiple drill bits of different diameters through support means, allowing one guide sleeve to perform multiple functions instead of requiring separate guide sleeves for each drill bit diameter

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The support means include adjustable depth control mechanisms that allow the guide sleeve to adapt to different drilling depths and drill bit configurations, enabling dynamic adjustment rather than requiring multiple fixed-depth guide sleeves

Inventive Principle:

Principle #15Dynamics

2Temperature

Engineering Contradiction:

Improveheating control of jawboneVSAvoidrisk of errors

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The guide sleeve accommodates multiple drill bits through support means, reducing the number of parts the practitioner must handle and select, thereby minimizing the risk of selecting the wrong guide sleeve or drill bit combination

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The support means include depth control mechanisms that provide feedback to ensure the drill bit reaches the correct depth, reducing the risk of drilling errors and ensuring consistent, accurate results across multiple drill bits

Inventive Principle:

Principle #23Feedback

3Temperature

Engineering Contradiction:

Improveheating control of jawboneVSAvoidcontamination risk

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The guide sleeve serves as a universal guide for multiple drill bits, reducing the number of separate components that need to be handled and assembled, thereby minimizing opportunities for contamination during the procedure

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The support means integrate depth control and drill bit guidance functions into a single unified structure, reducing the number of separate parts that could introduce contamination and simplifying the overall procedure

Inventive Principle:

Principle #5Merging (Combining)

4Manufacturing precision

If a plurality of tubular guide sleeves each adapted to be engaged with a small clearance in the tubular drilling bush are used, then good geometrical accuracy and coaxiality can be achieved, but the number of parts increases dramatically

Engineering Contradiction:

Improvegeometrical accuracy and coaxialityVSAvoidnumber of parts

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The guide sleeve is designed with a single internal bore that can accommodate multiple drill bits of different diameters through support means, maintaining geometrical accuracy and coaxiality while requiring only one guide sleeve instead of multiple guide sleeves with different internal bore diameters

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The support means are segmented to accommodate different drill bit diameters while maintaining the same guide sleeve structure, allowing flexibility in drill bit selection without requiring multiple guide sleeves

Inventive Principle:

Principle #1Segmentation

5Manufacturing precision

If a plurality of tubular guide sleeves with the same inside diameter but different heights are used, then depth control can be achieved, but the number of parts increases dramatically

Engineering Contradiction:

Improvedepth controlVSAvoidnumber of parts

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The support means include adjustable depth control mechanisms that allow the guide sleeve to adapt to different drilling depths, eliminating the need for multiple fixed-height guide sleeves and reducing the number of parts required

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8794963B2Device for centering and guiding a drill bit of a dental handpiece

Publication Date: 2014.08.05 ANTHOGYR SAS

AI summary

A device for centering and guiding at least one drill bit of a dental handpiece when drilling a hole in the jaw of a patient in cooperation with a surgical guide equipped with a tubular drill bushing. A support holds a tubular guide sleeve permanently in a coaxial and sliding position with respect to the drill bit. The tubular guide sleeve is able to engage with slight play in the tubular drill bushing. The support insures the engagement of the guide sleeve in the tubular drill bushing at the latest when the drill bit starts to drill in the patient's jaw, thus insuring the centering and guiding of the drill bit.