Tibial Cut Guide with Segmented Alignment Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current orthopedic procedures for knee arthroplasties face challenges in accurately positioning and adjusting tibial cut guides during bone resection, leading to increased procedure time and potential inaccuracies.
Innovation Solution
An extramedullary alignment guide system with adjustable components, including a tibial cut guide with a sagittal cut slot and quick-connect mechanisms, allows for precise positioning and rapid adjustment of the tibial cut guide along multiple axes, facilitating quicker and more accurate bone resection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional fixed alignment guides are used, then the structure is simple, but the positioning accuracy and adjustability are insufficient
Solution Approach 1:
The alignment guide is divided into multiple segments that can be independently adjusted. The guide includes a proximal assembly and distal assembly that can be positioned relative to each other, allowing independent adjustment of alignment parameters while maintaining overall structural coherence.
Solution Approach 2:
The alignment guide incorporates dynamic adjustment mechanisms that allow real-time modification of positioning parameters. The guide can be extended, retracted, and repositioned during the surgical procedure to accommodate varying anatomical conditions and surgical requirements.
2Productivity
If traditional alignment guides are used, then the assembly is straightforward, but the procedure time is increased
Solution Approach 1:
The alignment guide is pre-assembled with adjustable components and quick-connect mechanisms that allow for rapid setup and adjustment during surgery. The guide can be quickly extended, retracted, and repositioned without complex assembly steps, reducing overall procedure time while maintaining ease of operation.
3Adaptability or versatility
If fixed tibial cut guides are used, then the positioning is rigid, but the adaptability to different anatomical conditions is limited
Solution Approach 1:
The tibial cut guide incorporates dynamic adjustment capabilities that allow it to adapt to different anatomical conditions while maintaining stable positioning. The guide can be extended, retracted, and repositioned as needed, with quick-connect mechanisms ensuring reliable and stable positioning throughout the surgical procedure.
4Speed
If traditional alignment guides are used, then the structure is straightforward, but the quick-adjust capability is insufficient
Solution Approach 1:
The alignment guide is segmented into modular components with quick-connect mechanisms that enable rapid adjustment. The proximal and distal assemblies can be independently positioned and adjusted using simple connection and disconnection actions, achieving fast adjustment speeds without requiring complex mechanisms.
Data Source
AI summary
A system that can be used in a knee replacement procedure can include a tibial cut guide and an alignment guide. The tibial cut guide can have a first guide portion coupled to and adjustable relative to a second guide portion. The first guide portion can be configured to define a sagittal cut slot and a proximal cut slot. The alignment guide configured for extramedullary mounting to the patient and configured to couple with the second guide portion of the tibial cut guide, the alignment guide having a first mechanism and a second mechanism of differing construction, the first mechanism and the second mechanism are both configured to be actuated to facilitate extension and retraction of the alignment guide to position the tibial cut guide in a desired proximal-distal location relative a tibia of a patient when the tibial cut guide and the alignment guide are assembled together.