Medical Device Lock Pin and Alignment Knob Mechanism
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Solution Overview
Problem
Conventional medical devices with complex configurations face manufacturing challenges and increased costs, necessitating a simpler and more reliable design for cutting blades and tools.
Innovation Solution
A medical device comprising an outer and inner tubular member with a lock pin and alignment knob, allowing for rotation and translation, and featuring a quick connection mechanism and ratchet system for simplified blade assembly and alignment, reducing complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional medical devices use complex lock tab/lock ring configurations and electrical assistants, then the device can achieve precise control and alignment, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent removes complex electrical assistants and lock tab/lock ring configurations from the medical device, retaining only the essential mechanical alignment features (open windows and alignment references) needed for precise blade alignment, thereby simplifying the overall device structure while maintaining control precision
Solution Approach 2:
Instead of using complex locking mechanisms to achieve alignment, the patent inverts the approach by using simple open windows and alignment references that naturally guide and align components during assembly, achieving precise control through simplicity rather than complexity
2Strength
If conventional medical devices use complex lock tab/lock ring configurations, then the device can achieve secure locking, but the ease of manufacture decreases and cost increases
Solution Approach 1:
The patent extracts and eliminates the complex lock tab and lock ring configurations from the device design, replacing them with simpler mechanical features that are easier to manufacture while maintaining adequate locking reliability for the application
Solution Approach 2:
The patent adopts simpler, less expensive mechanical alignment and locking features that can be easily manufactured, accepting that these components may be less durable but sufficient for the intended use, thereby reducing overall device cost and manufacturing complexity
3Measurement precision
If conventional medical devices include multiple alignment and locking components, then the device can achieve precise alignment, but the ease of operation decreases
Solution Approach 1:
The patent combines multiple alignment and locking functions into integrated mechanical features where the open windows and alignment references serve both alignment and locking purposes simultaneously, reducing the number of separate components and simplifying the operation required to achieve precise alignment
Data Source
AI summary
Disclosed herein is a medical device. The medical device includes an outer tubular member, an inner tubular member, and a lock pin. The outer tubular member has a proximal end, a distal end, and an open window disposed at the distal end. The inner tubular member has a proximal end, a distal end, and an open window disposed at the distal end. The inner tubular member is configured to be received within the outer tubular member and capable of rotating and/or translating relative to the outer tubular member. The lock pin is configured to set the open window of the outer tubular member at a pre-determined orientation.