Rigid Bed Mount for Two-DOF Surgical Robotic Positioning

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Solution Overview

Problem

Traditional robotic surgical systems require at least four degrees of freedom for mounting to a surgical bed, limiting design possibilities, increasing weight and complexity, and occupying valuable workspace, while being mounted to non-sterile surfaces.

Innovation Solution

A surgical mount system with a tubular base and support arm configuration providing only two degrees of freedom, allowing for a lighter, more rigid, and stable bed-mounted interface, maintaining clearance from the floor and reducing system weight and complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional robotic surgical systems use at least four degrees of freedom for mounting to a surgical bed, then the system can achieve sufficient positioning flexibility, but the system weight and complexity increase

Engineering Contradiction:

Improvepositioning flexibilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates two degrees of freedom from the traditional four-DOF mounting system, retaining only the essential two degrees of freedom (vertical adjustment and horizontal rotation) needed for surgical arm positioning. This reduction removes unnecessary mechanical components and simplifies the overall system architecture while maintaining adequate positioning flexibility for surgical procedures.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of mounting the robotic system to the floor or ceiling and reaching up to the surgical bed, the patent inverts the mounting approach by fixing the system directly to the surgical bed itself. This inversion allows the robotic arm to operate from a stable, elevated platform, eliminating the need for complex extension mechanisms and reducing the number of required degrees of freedom.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

Engineering Contradiction:

Improvepositioning flexibilityVSAvoidsystem weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

Engineering Contradiction:

Improvepositioning flexibilityVSAvoidworkspace occupation

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

Inventive Principle:

Principle #13The other way round (Inversion)

4Ease of manufacture

If traditional robotic surgical systems are mounted to non-sterile surfaces, then the mounting is simplified, but the system cleanliness is compromised

Engineering Contradiction:

Improvemounting simplicityVSAvoidcontamination risk

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12426962B2Robotic surgical system with rigid bed mount

Publication Date: 2025.09.30 MAZOR ROBOTICS

AI summary

A surgical mount system according to at least one embodiment of the present disclosure includes a bed mount, a tubular base attached to the bed mount and comprising a telescoping member slidably coupled with the tubular base, the telescoping member comprising a first end and a second end, wherein the first end is disposed inside the tubular base, and wherein the telescoping member translates linearly along an axis of the tubular base; and a support arm attached to the second end of the telescoping member, the support arm having a length running from a proximal end to a distal end, wherein the support arm rotates relative to the bed mount about the axis of the tubular base.