Rotary Coupling Mount for Precise OR Stand Positioning

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Solution Overview

Problem

Existing mounting devices for stand devices in operating rooms lack precision in adjusting the rotational position of the spindle, leading to inaccuracies in defining the operating radius and requiring complex adjustments.

Innovation Solution

A mounting device with a longitudinally oriented cavity for receiving a rotatably mountable connecting component, an adjustment device for precise rotational positioning, and an anti-rotation element to secure the connecting component in place, allowing for easy adjustment of the spindle's rotational position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If flange plates are connected to the spindle and ceiling tube in the previously known manner, then the mounting device can be assembled, but the rotational position of the spindle cannot be adjusted precisely

Engineering Contradiction:
Improverotational position adjustment precisionVSAvoidmounting device structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The mounting device is divided into distinct functional segments: a clamp device for axial positioning, an adjustment device with multiple coupling points for rotational positioning, and a locking mechanism. This segmentation allows each component to perform its specific function independently, achieving precise rotational adjustment without requiring complete redesign of the entire mounting structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment device is pre-configured with multiple coupling points at predetermined angular positions before assembly. This preliminary preparation of positioning options allows for precise rotational adjustment to be performed simply by selecting and engaging the appropriate coupling point, rather than requiring complex real-time adjustment mechanisms.

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If shrunk-on discs are screwed radially to the ceiling tube, then the stand can be mounted, but special gap dimensions and component tolerances create design disadvantages

Engineering Contradiction:
Improvemounting device manufacturingVSAvoidgap dimensions and component tolerances
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The clamp device is designed to automatically center and position the spindle within the mounting device through its clamping action. This self-centering mechanism eliminates the need for precise pre-machining of gap dimensions and tolerance control, as the positioning is achieved functionally during assembly rather than requiring extreme manufacturing precision.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If the rotational position of the stand relative to the ceiling or ceiling flange needs to be adjusted, then the operating radius can be specified, but complex adjustments are required with existing mounting devices

Engineering Contradiction:
Improverotational position adjustmentVSAvoidadjustment mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The mounting device transitions from a static fixed-position connection to a dynamic adjustable connection. The adjustment device with multiple coupling points allows the rotational position to be changed as needed, while the locking mechanism maintains the selected position. This dynamic capability enables easy repositioning without complex adjustment procedures.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustment device acts as an intermediary component between the rigid spindle and the mounting structure. It provides the flexibility for rotational adjustment while maintaining secure mechanical connection, simplifying the adjustment process by isolating the complexity to a single dedicated component rather than requiring complex mechanisms throughout the entire assembly.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3593780B1Mounting device with rotary coupling for a stand device
Publication Date: 2025.06.11 ONDAL MEDICAL SYST
  • EP3593780B1 patent drawingFigure 1~2
  • EP3593780B1 patent drawingFigure 3~4
  • EP3593780B1 patent drawingFigure 5~6

AI summary

The invention relates to a mounting device (10) for a stand device (1) for arrangement in the operating room and for the local positioning or relocation of a medical device in the operating room, in particular by a rotary movement, comprising: a mounting device (30) extending longitudinally along an axis of rotation (D) with a longitudinally oriented, in particular cylindrical, cavity (K) for receiving a rotatably mounted connecting component (4) of the stand device, in particular a spindle; and an adjustment device (20) for arranging the connecting component (4) in a predefinable position relative to the mounting device (30); wherein the mounting device (10) forms a rotary coupling (10a) adjustable about the axis of rotation (D) for mounting the connecting component (4) on the mounting device (30). The invention further relates to a mounting system with such a mounting device (10).