Surgical Robotic Li-Fi Alignment for Packet-Loss-Resilient Control

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Solution Overview

Problem

Wireless communications in surgical robotic systems are susceptible to interference and intermittent loss of information packets, leading to unintended conditions and temporary loss of motion of surgical instruments.

Innovation Solution

Implementing redundant wireless communication channels using different communication technologies and frequencies, with a control tower and robotic system components equipped with multiple transceivers, and a processor to monitor channel quality and switch between channels based on observed quality to ensure data integrity and continuity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If wireless communication is used to reduce setup complexity and minimize cables, then ease of operation is improved, but reliability deteriorates due to interference and packet loss

Engineering Contradiction:
Improvesetup complexityVSAvoidcommunication reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent applies local quality by using different communication technologies and frequencies for different communication channels. Each channel has distinct characteristics (e.g., Wi-Fi, 5G, Li-Fi, Bluetooth at different frequencies) optimized for specific conditions, allowing the system to select the most reliable channel for each particular communication need while maintaining overall wireless operation simplicity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically changes communication parameters by switching between different wireless channels based on real-time channel quality monitoring. When interference or packet loss is detected on one channel, the system transitions to another channel with better quality, thereby maintaining reliability without sacrificing the ease of wireless operation.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If redundant communication channels are implemented to improve reliability, then communication reliability is improved, but device complexity increases

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control tower and robotic system components are designed with multi-functionality, housing multiple transceivers that can operate across different wireless channels. This universal design allows a single system to manage multiple communication channels through integrated channel quality monitoring and switching logic, reducing the need for separate dedicated systems for each channel and thereby limiting the increase in overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements feedback mechanisms where channel quality is continuously monitored and used to automatically select the optimal communication channel. This closed-loop approach simplifies complexity management by automating channel selection based on real-time conditions, eliminating the need for manual intervention or complex user-side decision-making logic.

Inventive Principle:
Principle #23Feedback

3Reliability

If channel switching is implemented to compensate for packet loss, then reliability is improved, but loss of time increases due to channel monitoring and switching overhead

Engineering Contradiction:
Improvedata integrityVSAvoidchannel switching overhead
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by continuously monitoring channel quality in advance and maintaining readiness to switch channels before actual packet loss occurs. This proactive approach minimizes the time required for channel switching during critical moments, as the switching logic and alternative channels are already prepared and identified.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements partial monitoring of channel quality rather than exhaustive analysis of all possible channels. By monitoring key parameters and using threshold-based decisions, the system achieves sufficient reliability improvement while minimizing the time overhead associated with comprehensive channel assessment and switching operations.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS20250241717A1Wireless architectures for surgical robotic systems
Publication Date: 2025.07.31 COVIDIEN LP
  • US20250241717A1 patent drawing
  • US20250241717A1 patent drawing
  • US20250241717A1 patent drawing

AI summary

A surgical robotic system includes a control tower and a robotic system component. The control tower includes a tower Li-Fi transceiver configured to communicate on a first communication data channel. The robotic system component includes a robotic system component Li-Fi transceiver configured to communicate first data, and a self-aligning mechanism. The self aligning mechanism includes an imaging device configured to capture images configured to allow detection of a detected a geospatial location of the tower Li-Fi transceiver, and an actuatable base configured for aligning the imaging device with the detected geospatial location of the tower Li-Fi transceiver. The robotic system component Li-Fi transceiver is mounted to the actuatable base.