NFC Tool Authentication Across the Robotic Surgery Sterile Barrier

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Solution Overview

Problem

Robotic surgical tools lack a power source and conventional communication methods like serial ports and Ethernet violate the sterile barrier, making it difficult to establish secure communication and data transfer with the surgical robot.

Innovation Solution

Utilizing near-field communication (NFC) modules embedded in both the surgical tool and the surgical robot to facilitate data and power transfer, enabling authentication and secure data exchange through an NFC link.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If conventional communication methods (serial ports, Ethernet, wire connections) are used between surgical tool and robotic system, then data transfer capability is improved, but sterile barrier integrity is violated

Engineering Contradiction:

Improvedata transfer capabilityVSAvoidsterile barrier integrity

Core Design Contradiction:

Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical/wired communication interfaces (serial ports, Ethernet, wire connections) with a wireless NFC-based communication system. The NFC reader in the robotic system communicates with the NFC tag in the surgical tool through electromagnetic fields, eliminating the need for physical openings or connections that would compromise the sterile barrier while maintaining full data transfer capability for tool identification and control parameters.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Object-affected harmful factors

If surgical tool is made electrically passive to maintain sterile barrier, then sterile barrier integrity is preserved, but communication and power transfer capability deteriorates

Engineering Contradiction:

Improvesterile barrier integrityVSAvoidcommunication and power transfer capability

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The patent introduces NFC tags as intermediary elements that enable communication and power transfer without requiring active electrical connections. The NFC tag in the passive surgical tool interacts with the NFC reader through electromagnetic coupling, allowing the robotic system to retrieve tool information and transmit control commands while the tool remains electrically passive and maintains sterile barrier integrity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The NFC technology serves multiple functions simultaneously: it enables wireless communication for tool identification and parameter transfer, provides power transfer to the passive NFC tag, and maintains sterile barrier integrity. This multi-functional approach resolves the contradiction by making a single technology solution that addresses all requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If NFC modules with microcontroller and memory are embedded in both tool and robot, then authentication and secure data exchange capability is improved, but device complexity increases

Engineering Contradiction:

Improveauthentication and secure data exchange capabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs NFC tags with microcontrollers and memory in the surgical tools, which are designed as disposable or single-use components. This approach maintains authentication and secure data exchange capabilities while minimizing the complexity burden on the reusable robotic system. The tool-specific NFC module can be easily replaced with each new tool, avoiding the need for complex, reusable authentication hardware in the robot.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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

Establishes a secure and reliable communication channel between the surgical tool and the robotic surgical system, ensuring tool authentication and efficient data transfer without violating the sterile barrier.

Implementation Method 1

Near-field communication (NFC), as a form of RFID connections becomes an ideal choice because an NFC module can be electrically passive, while NFC field generated from a tool drive of the robot arm can provide power wirelessly to the NFC module inside the surgical tool

Methodology Applied

Scientific EffectNear-field communication: Electromagnetic Induction

Data Source

PatentUS20250381010A1Enabling secure data exchange between a robotic surgical system and surgical tools

Publication Date: 2025.12.18 AURIS HEALTH INC

AI summary

Near-field communication (NFC) is used to facilitate secure data exchange between a robotic surgical system and a surgical tool attached onto the robotic surgical system are disclosed. In one aspect, a process for enabling secure data exchange between a robotic surgical system and a surgical tool begins by detecting a coupling of the surgical tool onto the robotic surgical system. The process next establishes an NFC link between a first NFC module embedded in the robotic surgical system and a second NFC module embedded in the surgical tool. The process then determines whether the surgical tool is authenticated to the robotic surgical system via the NFC link. Next, in response to the authentication of the surgical tool, the process establishes secure data exchange between the robotic surgical system and the surgical tool. Other aspects are also described and claimed.