Compact Parallel Robot With Optical Tracking for Surgical Positioning

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Solution Overview

Problem

Conventional surgical robots are large in size, occupying valuable space in the operating room and limiting the flexibility and convenience of surgical operations.

Innovation Solution

A compact parallel robot system with a mounting base, moving platform, driving apparatus, tracer, and optical positioning and tracking apparatus, combined with a passive arm, allowing for multi-degree-of-freedom movement and real-time spatial position tracking, featuring electric push rods and force amplification mechanisms for precise positioning and tool operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional surgical robot is used, then surgical functions can be performed, but the robot occupies large space and limits operational flexibility

Engineering Contradiction:
Improveoperational flexibilityVSAvoidspace occupation
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The surgical robot system is divided into modular components: a compact parallel robot for precise positioning, a passive arm for extended reach, and a tracer for tracking. This segmentation allows each component to perform specific functions while minimizing overall space requirements, enabling flexible reconfiguration in the operating room environment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The parallel robot is integrated within or alongside the passive arm structure, with the tracer positioned on the moving platform. This nested arrangement allows the compact parallel robot to be housed within the existing surgical robot framework, reducing the overall footprint while maintaining full functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of stationary object

If the surgical robot is made smaller, then space efficiency improves, but positioning precision may be compromised

Engineering Contradiction:
Improvespace occupationVSAvoidpositioning precision
Core Design Contradiction:
Area of stationary objectVSMeasurement precision

Solution Approach 1:

The system replaces complex mechanical positioning systems with a combination of a compact parallel robot for fine positioning and an optical tracking system (tracer with optical positioning and tracking apparatus) for real-time position measurement. This substitution allows a smaller mechanical structure to achieve high positioning precision through optical feedback and control.

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

Solution Approach 2:

The tracer on the moving platform provides real-time spatial position feedback to the control system. This feedback loop enables the compact parallel robot to maintain high positioning precision by continuously adjusting its position based on optical tracking data, compensating for the reduced mechanical complexity.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If multiple devices are integrated, then functional versatility improves, but device complexity increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The parallel robot is designed as a universal platform that can perform multiple surgical functions (positioning, drilling, implantation) and can be configured with different tools or end-effectors. The passive arm provides additional versatility by enabling reach to different anatomical locations, allowing a single integrated system to replace multiple specialized devices.

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

Solution Approach 2:

The system merges the parallel robot, passive arm, and tracer into a single integrated surgical robot system with a unified control apparatus. This consolidation reduces the number of separate devices needed in the operating room while maintaining functional versatility through the coordinated operation of integrated components.

Inventive Principle:
Principle #5Merging (Combining)

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

The system provides a small, flexible, and space-efficient solution for surgical operations, enhancing the flexibility and precision of surgical tools, enabling precise positioning and various surgical functions while reducing the need for additional space.

Implementation Method 1

an optical positioning and tracking apparatus, configured to track a spatial position of the tracer in real time

Methodology Applied
Scientific EffectOptical tracking: Light

Implementation Method 2

the first driving mechanism and the second driving mechanism apply an acting force to the first locking element and/or the second locking element by the first force amplification apparatus and/or the second force amplification apparatus

Methodology Applied
Scientific EffectMechanical advantage: Lever

Data Source

PatentUS12521874B2Parallel robot system
Publication Date: 2026.01.13 BEIJING ROSSUM ROBOT TECH CO LTD
  • US12521874B2 patent drawing
  • US12521874B2 patent drawing
  • US12521874B2 patent drawing

AI summary

A parallel robot system, including: a control apparatus; a parallel robot, including a mounting base, a moving platform, and a driving apparatus arranged between the mounting base and the moving platform, where the driving apparatus is configured to drive the moving platform to make multi-degree-of-freedom movement relative to the mounting base, and the driving apparatus receives a control signal from the control apparatus; a tracer, arranged on the moving platform; a passive arm, where the mounting base of the parallel robot is connected to one end of the passive arm; and an optical positioning and tracking apparatus, configured to track a spatial position of the tracer in real time and to send spatial position data of the tracer to the control apparatus. The parallel robot system is small in size and convenient to mount, and can provide various functions of auxiliary punching, implantation, positioning and the like.