Instrument Navigation Tracking for Accurate Pose in Opaque Tissue
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Surgical procedures face challenges due to limited visual access and acuity caused by opaque tissues, making it difficult to determine the pose of instruments within a subject accurately.
Innovation Solution
A navigation system that tracks and determines the pose of instruments using a combination of tracking devices, imaging systems, and spread spectrum technology to correct for signal distortions, enabling precise navigation and visualization of instruments relative to the subject.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual access is used to determine instrument pose, then direct observation is possible, but visual acuity is limited due to opaque tissues
Solution Approach 1:
The patent replaces direct visual observation with electromagnetic field-based tracking. A tracking device attached to the instrument emits signals that are received by external sensors, allowing pose determination through electromagnetic signal analysis rather than direct vision through opaque tissues.
Solution Approach 2:
The patent introduces an intermediary tracking device that acts as a mediator between the instrument and the external monitoring system. This tracking device carries electromagnetic transmitters that enable indirect observation of instrument position and orientation through signal processing.
2Reliability
If spread spectrum technology is used to transmit signals, then signal distortion can be corrected, but system complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the system continuously monitors signal quality and uses this information to adjust transmission parameters. The spread spectrum code modulation allows the system to detect and correct for signal distortions by comparing expected and actual signal patterns.
Solution Approach 2:
The patent utilizes parameter changes through spread spectrum modulation, where the signal is distributed across a wide frequency spectrum. This allows the system to adapt to varying transmission conditions by adjusting modulation parameters and filtering characteristics to maintain reliable communication.
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
Enables accurate tracking and visualization of instruments within opaque environments, facilitating precise surgical procedures such as stent placement and deep brain stimulation by correcting for signal distortions caused by metallic objects.
Implementation Method 1
the navigation system may include a tracking device connected with an instrument (e.g. fixed or incorporated into the instrument) that wirelessly transmits a signal to an array
Implementation Method 2
A spread spectrum, which may include various techniques as discussed herein, may be used to transmit a signal, determine a distorted signal and to either disregard and/or correct for the distorted signal
Data Source
AI summary
Disclosed is a system for assisting in guiding and performing a procedure on a subject. The subject may be any appropriate subject such as inanimate object and/or an animate object. The guide and system may include various manipulable or movable members, such as robotic systems, and may be registered to selected coordinate systems.