Surgical Impactor Linkage Converts Vertical to Horizontal Motion
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Solution Overview
Problem
Current surgical impactor/extractor tools for orthopedic procedures, such as total or partial knee arthroplasty, lack advanced mechanisms for efficiently installing and removing prosthetic devices like femoral implants, requiring additional improvements in precision and ease of use.
Innovation Solution
A surgical assembly featuring a housing with movable arms and a linkage assembly that allows vertical movement to translate into horizontal movement, combined with a dial for adjusting the grip, enables precise positioning and secure connection/disconnection of prosthetic devices, facilitating their insertion or removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a linkage assembly is used to convert vertical movement to horizontal movement of arms, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The linkage assembly converts vertical movement of the actuator into horizontal movement of the arms through a dynamic mechanical connection. The links and glidesleeve create a movable mechanism that automatically transforms the direction of force, providing precise positioning without requiring complex control systems.
Solution Approach 2:
The linkage assembly acts as an intermediary mechanism between the actuator and the arms. It mediates the movement transformation from vertical to horizontal direction, allowing precise control of arm positioning while keeping the actuator design relatively simple.
2Ease of operation
If multiple arms with adjustable positions are used to secure prosthetic devices, then ease of operation is improved, but device complexity increases
Solution Approach 1:
Multiple arms are provided that can each be independently positioned and locked to engage with different portions of the prosthetic device. This multi-functional design allows the same structural elements to serve multiple purposes: positioning, securing, and releasing the implant, thereby improving ease of operation without proportionally increasing complexity.
Solution Approach 2:
The device is segmented into multiple independent arms that can be adjusted and locked at different positions. Each arm can be operated independently to secure different parts of the prosthetic device, providing ease of operation through modular functionality.
3Volume of moving object
If a compact housing design is used, then device portability is improved, but ease of operation is worsened
Solution Approach 1:
The linkage assembly and multiple arms are housed within a compact housing structure. The mechanical components are nested and integrated efficiently within the housing boundaries, maintaining a compact overall device size while preserving the functionality and ease of operation of the external controls and arms.
Data Source
AI summary
A surgical assembly includes a housing, a first arm extending outside the housing and a linkage assembly housed by the housing and connected to the first arm. Movement of the linkage assembly inside the housing is linked to movement of the first arm outside of the housing.