Knee Joint Endoprosthesis Connecting Element Securing Device
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Solution Overview
Problem
Existing medical implants and knee joint endoprostheses face challenges in handling and securing connecting elements, leading to potential misalignment and instability during assembly.
Innovation Solution
A securing device is provided to securely hold the connecting element in the connecting element receptacle, allowing for easier handling and ensuring reliable connection between implant parts by using a combination of abutment members and securing members that can be transferred from an assembly position to a secured position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a connecting element is inserted into the connecting element receptacle without a securing device, then the assembly process is simpler and faster, but the connecting element may be unintentionally released or moved during handling
Solution Approach 1:
The securing device is designed to be inserted into the connecting element receptacle together with or immediately after the connecting element, performing the securing action in advance before handling begins. This preliminary securing action prevents unintentional release during subsequent handling operations.
Solution Approach 2:
The securing device acts as an intermediary component between the connecting element and the receptacle. It provides an additional layer of retention that mediates the interaction between these two components, ensuring the connecting element remains securely held without requiring direct engagement features on the connecting element itself.
2Reliability
If a securing device is added to hold the connecting element, then the connection reliability improves, but the device complexity increases
Solution Approach 1:
The securing device is merged with the connecting element assembly, where the securing device is inserted into the connecting element receptacle alongside or with the connecting element. This merging approach allows the securing function to be integrated into the existing assembly process without requiring a completely separate, complex securing mechanism.
Solution Approach 2:
The securing device is designed with a universal insertion mechanism that works with the existing connecting element receptacle structure. It serves multiple functions: securing the connecting element, maintaining alignment, and providing retention without requiring specialized complex features, thereby reducing overall device complexity.
3Reliability
If the connecting element is held securely in the receptacle, then unintentional release is prevented, but the assembly and disassembly process becomes more complex
Solution Approach 1:
The securing device is segmented into a separate insertable component that can be independently placed into the connecting element receptacle. This segmentation allows the securing function to be added as a discrete step in the assembly process, maintaining organization and making the assembly procedure clearer and more manageable despite the additional component.
Data Source
AI summary
The invention relates to a medical implant consisting of a first implant part and a second implant part for the connection of which there is provided a connecting device, wherein at least the first implant part comprises a connecting element receptacle, in which at least one connecting element of the connecting device can be disposed. In order to provide an implant of this type which is easier to handle, it is proposed, in accordance with the invention, that a securing device be provided for the purposes of securing the at least one connecting element in the connecting element receptacle. Moreover, the invention relates to a knee joint endoprosthesis having at least one implant of this type.