Surgical Robot Trocar Position Display for Endoscopic Surgery

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Solution Overview

Problem

In endoscopic surgery, ensuring that the surgical instrument remains immovable at the incision site is challenging, as existing systems lack effective confirmation mechanisms, leading to uncertainty about the readiness of the surgical robot for operation.

Innovation Solution

A surgical robot equipped with an arm device, drive device, display section, and display processor that recognizes and displays the relative positional relationship between the trocar insertion site and the surgical instrument's distal end, along with an immovable point setter and drape detector, allows operators to confirm if the instrument is correctly positioned and ready for surgery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the surgical robot moves the surgical instrument to the incision site, then the instrument can be positioned for surgery, but the operator cannot confirm whether the instrument is immovable at the incision site

Engineering Contradiction:
Improveposition confirmation accuracyVSAvoidimmovability status information
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent implements a feedback mechanism by displaying the relative positional relationship between the incision site and the distal end of the surgical instrument on a display section. This visual feedback allows the operator to confirm whether the instrument is correctly positioned and immovable at the incision site, resolving the information loss problem.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary display system that mediates between the surgical instrument position and the operator's perception. The display section serves as an intermediary that translates the physical position relationship into visual information, enabling the operator to confirm immovability without direct physical verification.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the surgical robot is configured with position recognition and display functions, then the operator can confirm instrument readiness, but the device complexity increases

Engineering Contradiction:
Improvesurgery readiness confirmationVSAvoidrobot system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies multi-functionality by using the existing display section for multiple purposes: displaying surgical instrument position information, confirming immovability at the incision site, and providing readiness verification. This eliminates the need for separate dedicated display devices, reducing overall system complexity while maintaining reliability.

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

Solution Approach 2:

The surgical robot system performs self-verification of its own readiness by displaying its own position relative to the incision site. The system serves itself by providing the operator with confirmation information without requiring external verification equipment or procedures.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4101408B1Robot for surgery
Publication Date: 2025.03.26 RIVERFIELD INC
  • EP4101408B1 patent drawingFigure 1
  • EP4101408B1 patent drawingFigure 2
  • EP4101408B1 patent drawingFigure 3A~3C

AI summary

Provided is a surgical robot for use in endoscopic surgery, wherein the surgical robot includes an arm device that holds a surgical instrument used in endoscopic surgery, a drive device that drives the arm device, a display section for displaying information, and a display processor that displays a relative positional relationship between a "site where a trocar is to be inserted" and a "distal end position of the surgical instrument" during surgery on the display section.