Modular Taper Assembly Tool Scissor Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current modular joint prostheses face challenges in securing components due to inadequate mechanical advantage, ergonomic issues, and complexity in assembly and disassembly, particularly in minimally invasive surgeries, where existing tools are often bulky and not adaptable for various sizes and shapes.
Innovation Solution
A modular assembly tool with a housing and internal component featuring an actuating device and actuator rod, allowing relative motion to securely engage and disengage prosthesis components, utilizing a scissor arm mechanism to reduce user effort and enhance mechanical advantage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular prosthesis design is used to provide flexibility in component selection, then adaptability to patient anatomy is improved, but the complexity of securing and assembling components increases
Solution Approach 1:
The patent introduces a specialized assembly tool as an intermediary device that facilitates the connection between modular prosthesis components. The tool includes a housing with a longitudinal axis and an internal component with an actuating device that applies controlled force to secure components together, thereby reducing the complexity of the assembly process while maintaining the adaptability of modular designs.
Solution Approach 2:
The patent replaces complex manual assembly mechanisms with a streamlined mechanical system comprising a housing and internal actuating component. The actuating device, which can be manually or mechanically actuated, provides controlled force application to secure prosthesis components, simplifying the overall assembly process compared to traditional multi-step mechanical securing methods.
2Reliability
If existing assembly tools are used for modular prostheses, then component securing is achieved, but the tools are bulky and not adaptable for various sizes and shapes
Solution Approach 1:
The patent designs the assembly tool with dynamic adaptability, allowing the internal component to adjust its position and the actuating device to apply force at different locations along the longitudinal axis. This dynamic design enables the same tool to accommodate various prosthesis sizes and shapes while maintaining reliable component securing, eliminating the need for multiple specialized tools.
Solution Approach 2:
The assembly tool is designed as a universal device that can secure different prosthesis components of varying sizes and shapes. The housing and internal component are configured to interface with multiple prosthesis types, and the actuating device can be positioned to apply appropriate force for each component type, making the tool multi-functional and adaptable across different surgical scenarios.
3Reliability
If manual assembly methods are used for modular prostheses, then component engagement is achieved, but user effort and difficulty in assembly increases
Solution Approach 1:
The assembly tool serves as an intermediary that amplifies the user's input force and applies it controllably to the prosthesis components. The internal component and actuating device work together to translate minimal user effort into the substantial force required for secure component engagement, thereby maintaining reliability while dramatically reducing the effort required from the surgical professional.
Solution Approach 2:
The patent replaces direct manual assembly with a mechanical advantage system comprising a housing and internal actuating mechanism. This mechanical system provides controlled force multiplication and precise force application, making the assembly process easier and more reliable than direct manual methods while ensuring consistent component engagement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool facilitates secure assembly and disassembly of prosthesis components with reduced user effort, improving mechanical advantage and adaptability for various sizes and shapes, thus simplifying the surgical process and reducing operating room time.
Implementation Method 1
utilizing a scissor arm mechanism to reduce user effort and enhance mechanical advantage
Data Source
AI summary
A kit for use in joint arthroplasty that includes a first component of a prosthesis, a second component of the prosthesis, and an assembly tool for assembling the first component to the second component. The tool includes a housing for contact with the first component and an internal component connected to the second component. The internal component includes an actuating device and an actuator rod. The actuating device has at least one scissor arm. The housing and the internal component are adapted to provide for the assembly of the first component of the prosthesis to the second component of the prosthesis. The internal component is adapted to provide relative motion of the internal component with respect to the housing when the at least one scissor arm is moved relative to the housing, the relative motion of the internal component with respect to the housing being utilized to effect the relative motion of the first component with respect to the second component to urge the second component into engagement with the first component.