Gear-Drive Adapter Self-Aligning Catching Mechanism
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Solution Overview
Problem
Existing medical drivers lack flexibility, requiring surgeons to use separate tools for straight driving and gear-driven tasks, leading to increased equipment needs and strain during surgery.
Innovation Solution
A variable speed gear driver adapter system with a self-aligning mechanism that allows switching between different gear ratios using a single handle, incorporating a housing with multiple gears and a drive shaft with keyed structures to engage or disengage key stops, enabling operation at various gear ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgeons use separate tools for straight driving and gear-driven tasks, then each tool can be optimized for its specific function, but the number of equipment items increases and surgeons experience increased strain during surgery
Solution Approach 1:
The patent combines straight driving and gear-driven functions into a single driver handle by integrating a gear mechanism within the handle assembly. The drive shaft can engage with either the ball driver directly (straight driving) or through the gear mechanism (gear-driven), allowing surgeons to perform both types of tasks with one tool, thereby reducing the number of equipment items needed while maintaining functional optimization
Solution Approach 2:
The driver handle is designed with universal functionality to perform both straight driving and gear-driven tasks. The drive shaft includes keyed structures that can engage with different components (ball driver or gear mechanism) depending on the task requirements, making the single handle adaptable to multiple surgical applications and eliminating the need for separate specialized tools
2Quantity of substance
If a single handle is used for both straight driving and gear-driven tasks, then equipment needs are reduced, but the device complexity increases due to the need for switching mechanisms and multiple gear ratios
Solution Approach 1:
The driver handle incorporates a dynamic switching mechanism that allows the drive shaft to engage or disengage the gear mechanism as needed. The switch can be operated during surgery to change between straight driving and gear-driven modes, providing adaptability without requiring a completely separate tool for each function, thus balancing reduced equipment quantity with manageable device complexity
Solution Approach 2:
The gear mechanism is segmented into distinct components (gears, drive shaft, keyed structures) that can independently engage or disengage based on operational needs. This modular segmentation allows the complex gear system to be controlled through a simple switching mechanism, reducing the perceived complexity while maintaining the capability for multiple gear ratios and driving modes
Data Source
AI summary
A gear-driver adapter configured to switch between at least two gear ratios includes a switch which exerts a force on a drive shaft to move the drive shaft between at least two positions, each corresponding to a gear ratio, in an epicyclic gear system created by a main gear body, ball driver and gear holder with gears. The drive shaft contains keyed structures and, depending on its position within the gear system, the keyed structures on the drive shaft engage or disengage a plurality of key stops. The key stops, in turn, interact with the gears to generate the desired gear ratio. The contours of the keyed structures on the gear holder allow the drive shaft to move between positions without first being specifically positioned. The gear-driver adapter also includes a handle adapter and a driver adapter, allowing users to use any handle or driver with the gear-driver adapter.