Surgical Tool Tip Orientation Detection System

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Solution Overview

Problem

During computer-assisted surgery, it is challenging for surgeons to accurately view surgical tools on a monitor due to difficulties in determining the position and orientation of the tool tip, especially when multiple tools are involved and tools are manipulated by robotic arms.

Innovation Solution

A system utilizing one or more processors and non-transitory computer-readable storage media to detect surgical tools in image frames, generate key points corresponding to different portions of the tools, and determine the position and orientation of the tool tip in real-time, employing object recognition and deep learning techniques for accurate tracking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If computer technology is used to guide surgical procedures with multiple tools and robotic arms, then surgical precision and control are improved, but the ability to clearly view and determine the position and orientation of tool tips on the monitor deteriorates

Engineering Contradiction:
Improvetool tip position and orientation determinationVSAvoidmultiple surgical tools and robotic arms
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces an image processing system that acts as an intermediary between the complex surgical environment and the surgeon's view on the monitor. The system processes images from multiple cameras, detects tool tips and orientations, and generates simplified visual representations that are displayed on the monitor, thereby resolving the contradiction between handling complexity and maintaining clear visibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a virtual copy or representation of the physical surgical scene by capturing images from multiple cameras, processing them to identify tool tips and orientations, and displaying this processed visual information on the monitor. This copy provides enhanced visibility and measurement precision without adding physical complexity to the surgical field.

Inventive Principle:
Principle #26Copying

2Adaptability or versatility

If multiple surgical tools are used simultaneously, then surgical capability and versatility are improved, but the difficulty of detecting and tracking tool tip positions and orientations increases

Engineering Contradiction:
Improvesurgical tool functionalityVSAvoidtool tip position and orientation detection
Core Design Contradiction:
Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the complex task of tracking multiple tools by first detecting each tool individually in the image frames, then identifying specific key points (tool tips) on each detected tool, and finally determining orientations based on the spatial relationships between these segmented elements. This segmentation approach makes the detection and tracking of multiple tools feasible and accurate.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11399896B2Surgical tool tip and orientation determination
Publication Date: 2022.08.02 SONY GROUP CORP
  • US11399896B2 patent drawing
  • US11399896B2 patent drawing
  • US11399896B2 patent drawing

AI summary

Implementations generally relate to determining the position of a tool tip of a surgical instrument and the orientation of the surgical instrument. In some implementations, a method includes receiving at least one image frame of a plurality of image frames. The method further includes detecting a surgical tool in the at least one image frame. The method further includes determining a position of a tip of the surgical tool. The method further includes determining an orientation of the surgical tool.