Needle Guide Angle Feedback for Precise Surgical Insertion
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Solution Overview
Problem
Conventional needle insertion methods during surgical procedures are cumbersome, slow, and inexact, requiring multiple scans and repositionings, leading to increased radiation exposure, prolonged procedure times, discomfort for patients, and reduced efficiency in medical facilities.
Innovation Solution
A needle guide system that tracks the angle and depth of the needle using sensors like accelerometers and gyroscopes, providing real-time visual feedback to clinicians through a display, allowing precise alignment to a target position without repeated imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional needle insertion methods are used with repeated scanning, then the clinician can determine needle position, but the procedure time increases and patient radiation exposure increases
Solution Approach 1:
The system pre-calculates the ideal needle trajectory and entry point based on target coordinates before needle insertion begins. The guide device is pre-positioned at the calculated entry point with pre-determined angular orientation, eliminating the need for repeated scanning and repositioning during the procedure.
Solution Approach 2:
The system provides real-time visual feedback through a display showing the current needle angle and depth compared to the ideal trajectory. This continuous feedback allows the clinician to make precise adjustments without repeated imaging scans, reducing both time and radiation exposure while maintaining measurement precision.
2Measurement precision
If conventional needle insertion methods are used with repeated scanning, then the clinician can determine needle position, but the patient experiences more discomfort
Solution Approach 1:
The optimal entry point and trajectory are calculated in advance using the target coordinates and patient anatomy. The guide device is positioned at this pre-determined entry point with the correct angular orientation established before needle insertion begins, eliminating repeated needle adjustments and associated patient discomfort.
Solution Approach 2:
Real-time visual feedback on the display shows the clinician the current needle position relative to the ideal trajectory, allowing for precise, single-pass insertion. This reduces the number of times the needle needs to be withdrawn and repositioned, thereby minimizing patient discomfort while maintaining accurate needle placement.
3Ease of operation
If conventional needle insertion methods are used, then the needle can be inserted step by step, but the procedure efficiency decreases
Solution Approach 1:
All critical parameters including entry point coordinates, trajectory angle, and target depth are calculated and stored in the system before the procedure begins. The guide device is pre-configured with these parameters, allowing the clinician to perform needle insertion in a single streamlined operation rather than through multiple iterative steps, thereby increasing procedural efficiency and the number of procedures that can be performed daily.
Solution Approach 2:
The system provides continuous real-time feedback during needle insertion, displaying current angle and depth information. This allows the clinician to complete the insertion in one continuous motion with minimal adjustments, rather than through multiple scan-reposition cycles, significantly improving procedure throughput and daily productivity.
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
Enhances precision, reduces procedure time, minimizes patient discomfort, and increases the number of procedures that can be performed in a day by providing real-time guidance and reducing the need for multiple scans.
Implementation Method 1
the current angle is based on data from a gyroscope of the needle guide device
Implementation Method 2
the difference between the ideal angle and the current angle is based on data from a gyroscope and an accelerometer of the needle guide device
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A needle guide device includes a needle 240; a controller 202; and a display 204 driven by the controller and configured to indicate a difference between an ideal angle and a current angle of the needle.