Connection Cable With Voltage Divider For Robotic Electrosurgery

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Solution Overview

Problem

Existing electrosurgery generators are not compatible with robotic surgery systems, making it difficult for surgeons to control electrosurgical instruments remotely, requiring additional training and certification for medical staff.

Innovation Solution

A connection cable that interfaces an electrosurgery generator with a robotic surgery system, using a voltage divider to convert control signals from the robotic system into control voltages for the electrosurgery generator, allowing surgeons to select operating modes like cutting, blending, and coagulating from a remote console without modifying existing equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing electrosurgery generators are used without modification, then device simplicity is maintained, but compatibility with robotic surgery systems is lost

Engineering Contradiction:
Improvecompatibility with robotic surgery systemsVSAvoidcomplexity of electrosurgery generator
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The solution segments the electrosurgery system into two independent parts: the existing electrosurgery generator remains unchanged, while a separate connection cable with voltage divider circuitry handles the interface functions. This segmentation allows the generator to maintain its simplicity while the cable provides the necessary adaptability for robotic system integration.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection cable acts as an intermediary device between the robotic surgery system and the electrosurgery generator. It contains a voltage divider that converts control signals from the robotic system into the appropriate voltage levels for the electrosurgery generator, enabling communication without modifying either end device.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If hand switches on surgical instruments are used for control, then direct control is achieved, but remote control from robotic console is not possible

Engineering Contradiction:
Improveremote control capabilityVSAvoidcontrol interface complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connection cable serves as a mediator that translates control signals from the robotic console into commands that the electrosurgery generator can execute. This allows the surgeon to operate the electrosurgery function remotely through the robotic system's console while the generator receives and processes the control signals as if they originated from its native interface.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The solution replaces the mechanical hand switches on surgical instruments with an electrical signal transmission system. Control signals are transmitted electronically through the connection cable from the robotic console, substituting the mechanical control interface with an electrical communication pathway that enables remote operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If electrosurgery generator is modified to work with robotic systems, then compatibility is improved, but training and certification requirements increase

Engineering Contradiction:
Improveinteroperability with robotic surgery systemsVSAvoidtraining and certification requirements
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By segmenting the integration solution into a separate connection cable rather than modifying the electrosurgery generator itself, the patent avoids the need for retraining medical staff on modified equipment. The generator remains in its original, familiar form, while the cable provides the necessary interoperability functions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection cable creates a virtual copy of the hand switch control interface through electrical signal transmission. Instead of physically modifying the generator to accept robotic system controls, the cable replicates the control signal pathway electronically, allowing the generator to respond to robotic console inputs as if they were native controls.

Inventive Principle:
Principle #26Copying

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

Enables seamless integration of electrosurgery generators with robotic surgery systems, allowing surgeons to control electrosurgical instruments remotely, reducing training requirements and enhancing interoperability without modifying existing electrosurgery generators.

Implementation Method 1

A voltage divider is interdisposed between the first connector and the second connector, the voltage divider being configured to divide a reference voltage provided by the electrosurgery generator into at least one control voltage for selection by the controlling device

Methodology Applied
Scientific EffectVoltage division: Ohm's Law

Data Source

PatentUS7834484B2Connection cable and method for activating a voltage-controlled generator
Publication Date: 2010.11.16 COVIDIEN LP
  • US7834484B2 patent drawing
  • US7834484B2 patent drawing
  • US7834484B2 patent drawing

AI summary

A connection cable is disclosed for controlling a voltage-controlled generator such as an electrosurgery generator from a controlling device such as a robotic surgery system. The cable includes a first connector adapted to connect to a voltage-controlled generator and a second connector adapted to connect to a controlling device. Within the cable is a voltage divider interdisposed between the first connector and the second connector. The voltage divider is configured to divide a reference voltage provided by the voltage-controlled generator into at least one control voltage which is selectable by the controlling device. The cable additionally includes a plurality of electrical wires which operatively connect the first connector, the second connector and the voltage divider. During robotic electrosurgery, said operating parameters can be actuated by a surgeon operating at the robotic surgical system console, which causes a corresponding control voltage to be switched to a control voltage input on an electrosurgery generator, which, in turn, generates a corresponding electrosurgical signal in response thereto.