Robotic Cannula Guidance With 3D Imaging and Foot Pedal Control

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Solution Overview

Problem

Existing puncture guiding systems are inefficient and labor-intensive due to the need for practitioners to repeatedly walk between the bed and control system for cannula positioning, prone to deviations, and expose patients to unnecessary radiation, with robotic arms moving too fast or too large, causing needle bending or excessive pulling on wounds.

Innovation Solution

A puncture guiding system with a control device, robotic arm, diagnostic detection device, screen, and foot pedal, allowing manual and fixed modes for precise cannula placement, using image reconstruction for 3D imaging, and incorporating a force sensor to prevent deviations and external impacts, enabling single-person bedside operation with stable and slow movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the practitioner operates alone and walks between the bed and control system for cannula positioning, then the operation can be performed, but the process becomes time-consuming and laborious

Engineering Contradiction:

Improvesingle-person operation capabilityVSAvoidtime for walking between bed and control system

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent merges the control system components (display screen, control panel, image capture device) with the robotic arm system, allowing the practitioner to operate and monitor the entire system from the bedside without needing to walk between separate locations

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a touchscreen display and control interface as an intermediary that enables the practitioner to control the robotic arm and view real-time images without physically manipulating complex mechanical controls, simplifying single-person operation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If the robotic arm moves fast or large, then the operation speed increases, but the needle bends or breaks and excessively pulls on the patient's wound

Engineering Contradiction:

Improverobotic arm movement speedVSAvoidneedle integrity and wound stability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent implements dynamic speed control of the robotic arm, allowing the movement speed to be adjusted based on the specific operational phase (e.g., faster for positioning, slower for needle insertion), preventing needle bending while maintaining operational efficiency

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent incorporates real-time image capture and display feedback, allowing the practitioner to monitor the needle position and movement continuously, enabling precise control of the robotic arm speed to prevent excessive pulling or needle damage

Inventive Principle:

Principle #23Feedback

3Measurement precision

If the image capture device constantly takes pictures of the robot arm and sends photos to the computer for real-time position display, then the moving trajectory can be monitored, but the cost increases and patient radiation exposure increases

Engineering Contradiction:

Improvereal-time position monitoring accuracyVSAvoidpatient radiation exposure

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces continuous mechanical image capture with a more efficient real-time imaging system that provides continuous position feedback without requiring constant physical photographs, reducing radiation exposure while maintaining monitoring precision

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the imaging parameters by using a real-time image capture device that can display position information immediately without sending individual photos through a computer, reducing the frequency of radiation exposure while maintaining continuous monitoring capability

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If the diagnostic detection device is placed near one end of the bed and the robotic arm near the side of the bed, then the system components can be positioned, but the practitioner must walk back and forth between locations

Engineering Contradiction:

Improvesystem component placementVSAvoidpractitioner accessibility

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The patent combines the diagnostic detection device and robotic arm control functions into an integrated system that can be positioned at the bedside, eliminating the need for the practitioner to walk between separate locations at the end of the bed and the side of the bed

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12496152B2Puncture guiding system and method

Publication Date: 2025.12.16 NAT TAIWAN UNIV

AI summary

A puncture guiding system and method are provided. The system includes a control device, a robotic arm, a diagnostic detection device, a screen, and a foot pedal. The method includes: installing the cannula on the robotic arm and placing the cannula on the patient's body; the diagnostic detection device scanning the patient to obtain a plurality of two-dimensional images; constructing a three-dimensional image; displaying the image on the screen; providing the foot pedal; according to the action of a switching button, the robotic arm switches between manual mode and fixed mode; setting a moving path of the cannula, and the screen displaying the movement trajectories; according to the activation of a first or a second moving button, the cannula moving to a first or a second position, and the screen displaying the movement trajectories. The invention enables the cannula to move more stably, slowly and safely.