Dynamic Reference Frame Positioning Member for Surgical Navigation
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Solution Overview
Problem
Current navigated surgery systems face challenges in securely and easily attaching a dynamic reference frame to a patient's anatomy, particularly bones, during procedures, as existing methods often require complex attachment processes and may not provide stable fixation.
Innovation Solution
A surgical navigation system that includes a dynamic reference frame positioning member with a bone engaging portion, allowing for selective fixation to a bone by driving it into the bone tissue, providing stable positioning and minimizing tissue disruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dynamic reference frame is attached to a patient's bone using conventional methods, then stable fixation is achieved, but the attachment process becomes complex and time-consuming
Solution Approach 1:
The positioning device is divided into separate functional components: a bone engaging portion with cutting edges for insertion, a positioning portion with tracking sensor attachment features, and a removal portion with extraction features. This segmentation allows each component to be optimized for its specific function while simplifying the overall attachment process to a single insertion motion.
Solution Approach 2:
The device merges multiple functions into a single integrated tool: bone engagement through cutting edges, tracking sensor attachment through the positioning portion, and controlled removal through the removal portion. This consolidation eliminates the need for multiple separate instruments and simplifies the attachment procedure to a single percutaneous insertion motion.
2Reliability
If a dynamic reference frame is attached to a patient's bone using conventional methods, then stable fixation is achieved, but tissue disruption and trauma increase
Solution Approach 1:
The device replaces conventional mechanical attachment methods (screws, wires, or multiple instruments) with a single percutaneous insertion mechanism featuring cutting edges that guide the bone engaging portion into the bone. This substitution reduces the number of invasive actions required and minimizes soft tissue disruption while achieving stable fixation.
Solution Approach 2:
The bone engaging portion incorporates cutting edges with specific geometric parameters designed to reduce friction and resistance during insertion. The angles and dimensions of the cutting edges are optimized to minimize tissue disruption while ensuring smooth penetration through soft tissue and into the bone, thereby reducing trauma.
3Manufacturing precision
If a dynamic reference frame is attached to a patient's bone, then accurate positioning is achieved, but the procedure time increases
Solution Approach 1:
The device is pre-configured with the bone engaging portion, positioning portion, and removal portion in a single integrated structure. The cutting edges are pre-positioned to engage the bone, and the tracking sensor attachment features are pre-prepared on the positioning portion. This preliminary configuration eliminates the need for multiple assembly steps during the procedure, reducing time while maintaining accuracy.
Solution Approach 2:
The device is designed to be self-positioning through its percutaneous insertion mechanism. The bone engaging portion with cutting edges automatically guides the device into the bone and establishes the dynamic reference frame without requiring complex alignment procedures or multiple adjustment steps, thereby reducing procedural time while maintaining positioning accuracy.
Data Source
AI summary
A method and apparatus to perform a procedure that can include a processor assisted surgical procedure. During the procedure patient space and image space can be registered to allow for tracking of various tracking sensors. A dynamic reference frame can be used to maintain localization of the patient space with the image space. The dynamic reference frame can be fixedly interconnected with a bone portion of the anatomy.