CT Needle Biopsy Guide with Laser Trajectory Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing needle biopsy and minimally-invasive treatments face challenges in achieving accurate punctures, particularly in areas densely covered with bone substances, blood vessels, and organs, leading to potential inaccuracies and risks such as pneumothorax and organ damage.
Innovation Solution
A guiding and positioning device for CT-GNB that includes a control mechanism and actuating mechanism, utilizing servo motors, guide rails, and laser guidance to accurately determine and guide the puncture needle channel based on CT scanning images, reducing human error and ensuring precise puncture angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual puncture guidance is used based on CT images, then the procedure can be performed with simple equipment, but puncture accuracy is insufficient leading to potential complications
Solution Approach 1:
The patent introduces a laser guidance system as an intermediary between the CT imaging system and the puncture needle. The laser guide apparatus projects visible laser lines that coincide with the planned puncture trajectory, serving as a mediator to enhance the operator's spatial awareness and puncture accuracy without requiring complex automated robotic systems.
Solution Approach 2:
The patent replaces reliance on purely mechanical manual guidance with an optical guidance system. Instead of depending solely on mechanical precision and operator skill, the system uses laser optics to visualize the puncture path, substituting mechanical accuracy requirements with optical visibility and projection accuracy.
2Reliability
If multiple punctures are performed to ensure accuracy, then the chance of missing the target decreases, but the risk of complications such as pneumothorax and organ damage increases
Solution Approach 1:
The patent applies preliminary action by establishing the laser guidance system and verifying the puncture trajectory visualization before actually performing the puncture. The operator can pre-align the laser guide with the CT-planned path and confirm understanding of the trajectory, ensuring accuracy is achieved through proper setup rather than through multiple trial punctures.
Solution Approach 2:
The laser guidance system provides real-time visual feedback to the operator during the puncture procedure. The laser lines dynamically reflect the intended puncture path, allowing the operator to immediately see if adjustments are needed, thereby achieving high reliability through feedback-controlled precision rather than repeated attempts.
3Manufacturing precision
If the puncture needle channel is not accurately guided, then the procedure can be completed quickly, but the puncture angle and position may be inaccurate leading to treatment failure
Solution Approach 1:
The patent uses color changes in the laser guidance system to indicate different spatial relationships and trajectory information. Different laser colors or brightness levels can represent different aspects of the puncture path, making complex spatial information more easily perceivable and simplifying the operator's task of accurately positioning the needle at the correct angle.
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
The device enhances puncture accuracy, reduces the risk of complications, and ensures consistent patient positioning, thereby improving surgical safety and reducing the likelihood of puncture-related damages.
Implementation Method 1
a guiding mechanism configured to guide a puncture through a visible laser space
Data Source
AI summary
A guiding and positioning device for assisting in computed tomography-guided needle biopsy (CT-GNB) includes a control mechanism and an actuating mechanism, where the actuating mechanism includes a base and a support frame; one of the two head ends of the support frame is provided with a locking mechanism; a positioning apparatus includes a first guide rail in an arc shape, and the first guide rail is slidably provided with a guiding apparatus configured to guide different puncture angles in a same plane; the guiding apparatus includes a deflection drive mechanism slidable along the first guide rail, and a first translation mechanism and a second translation mechanism that are arranged perpendicular to each other; and the second translation mechanism is slidably provided with a guiding mechanism configured to guide a puncture through a visible laser space.