Robotic Guide Assembly for Accurate Bone Resurfacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bone-cutting guides for joint replacement surgeries lack accuracy in global implant positioning, reproducibility of bone cut surfaces, flexibility with varying implant types and geometries, compatibility with minimal access approaches, compactness, simplicity, and ease of use.
Innovation Solution
A computer and robot-assisted surgery system that includes a guide assembly with actuators for precise positioning of a cutting tool relative to the bone, featuring a fixation instrumentation, orienting apparatus, and positioning mechanism with multiple degrees of freedom to accommodate different implant geometries and surgical approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional bone-cutting guides are used, then the surgical procedure can be performed, but the accuracy in global implant positioning and reproducibility of bone cut surfaces deteriorates
Solution Approach 1:
The guide assembly is divided into multiple independent components: a base component that attaches to the bone, a guide body component that provides cutting guidance, and a positioning mechanism component that enables adjustable orientation. These segmented components work together to achieve precise implant positioning while maintaining manageable device complexity through modular design.
Solution Approach 2:
The guide assembly incorporates a positioning mechanism with multiple degrees of freedom that allows dynamic adjustment of the guide body relative to the base component. This dynamic capability enables the guide to adapt to different implant geometries and surgical approaches, improving positioning accuracy without requiring a completely new guide for each scenario.
2Adaptability or versatility
If conventional bone-cutting guides are used, then the surgical procedure can be performed, but the flexibility with varying implant types and geometries deteriorates
Solution Approach 1:
The guide assembly is designed as a universal system that can accommodate multiple implant types and geometries through its adjustable positioning mechanism. The guide body can be oriented in various directions and angles relative to the base component, allowing a single guide assembly design to serve multiple surgical scenarios and implant configurations, thereby improving versatility while maintaining ease of operation.
3Object-affected harmful factors
If minimally invasive surgical techniques are used, then the trauma to extensor mechanism is reduced, but the accuracy in implant alignment and positioning deteriorates
Solution Approach 1:
The guide assembly acts as an intermediary device that bridges the minimally invasive surgical approach with precise implant positioning. By providing a stable reference frame and cutting guidance system that can be positioned through smaller incisions, the guide assembly enables accurate alignment without requiring the extensive soft tissue disruption of traditional approaches, thus reducing morbidity while maintaining positioning accuracy.
Data Source
AI summary
A system for guiding resurfacing operations on at least a portion of a joint of at least one bone is provided and uses a guide with actuators (motors) controlled by a computer to position a cutting tool relative to a bone so that the bone surface can be cut in a flexible and accurate manner.