Adjustable Drill Guide for Bone Staple Spacing

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Solution Overview

Problem

Existing drill guides for bone staples are not universally adjustable and require multiple guides for different staple sizes, and they lack the ability to accurately control the depth of holes, which complicates bone fixation surgery.

Innovation Solution

An adjustable drill guide with a pivot mechanism and graduated indexing bar for adjusting the spacing between drill guides, and optional spacers for controlling the depth of holes, allowing for use with various staple sizes and precise hole placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple separate drill guides are used for different staple sizes, then each guide provides precise hole placement for its specific staple size, but the device complexity and number of required guides increase

Engineering Contradiction:
Improvehole placement precisionVSAvoidnumber of drill guides
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The drill guide is designed with an adjustable mechanism that allows a single guide to accommodate multiple staple sizes. The guide features movable components that can be repositioned to create different spacing configurations, enabling one universal guide to replace multiple size-specific guides while maintaining precise hole placement for each staple type

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The drill guide incorporates dynamic, movable elements including sliding components and adjustable arms that allow the guide geometry to change. This dynamic structure enables the guide to adapt its spacing and configuration to match different staple sizes, providing precision for each size without requiring separate static guides

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If fixed-spacing drill guides are used, then manufacturing is simpler, but adaptability to different staple sizes is reduced

Engineering Contradiction:
Improveguide manufacturing simplicityVSAvoidstaple size adaptability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The guide employs movable and adjustable components that can be repositioned to accommodate different staple spacings. This dynamic design allows a single guide to adapt to various staple sizes through simple mechanical adjustments rather than requiring multiple fixed guides, balancing manufacturing simplicity with versatility

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The drill guide is divided into modular, adjustable segments that can be independently positioned. This segmentation allows the guide to be configured for different staple sizes by adjusting individual components, maintaining ease of manufacture while achieving adaptability across multiple staple dimensions

Inventive Principle:
Principle #1Segmentation

3Measurement precision

If depth control mechanisms are added to the drill guide, then hole depth precision is improved, but device complexity increases

Engineering Contradiction:
Improvehole depth controlVSAvoidguide structure complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The drill guide incorporates depth control stops or限位 structures that act as intermediaries between the drill bit and the drilling operation. These simple mechanical stops provide precise depth control by physically limiting drill bit penetration, achieving accurate hole depth without complex control mechanisms

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9820759B1Drill guide for use in bone fixation
Publication Date: 2017.11.21 ASCENSION ORTHOPEDICS INC
  • US9820759B1 patent drawing
  • US9820759B1 patent drawing
  • US9820759B1 patent drawing

AI summary

A universal drill guide for use in position the location of holes to be drilled for insertion of bone staples. The drill guide has first and second legs pivotally secured to one another and first and second jaw members, each of the jaw members being provided with a drill guide. An indexer connected to the first and second legs includes a biaser, e.g., a spring to bias the first and second legs in a direction away from one another and a latch, catch or the like for selectively, releasably holding the first and second legs in a predetermined desired spacing.