Medical Stand Retaining Element for Visible Radial Spindle Locking
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Solution Overview
Problem
Existing medical stand systems require complex assembly processes, often necessitating multiple workers and strict sequences, with securing elements being difficult to visually inspect and potentially loose due to lack of visibility, leading to safety concerns and increased costs for stable solutions.
Innovation Solution
A securing system for medical stands that includes a securing element with predefined radial positions, allowing for simple and intuitive assembly, featuring a bearing section for axial positioning and an engagement section for radial interaction with a spindle, enabling secure and easy assembly by a single person, with visual inspection capabilities and reduced material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking ring is used to secure the support arm pin, then the support arm can be secured in a predefined axial position, but the locking ring cannot be visually inspected and may come loose
Solution Approach 1:
The securing element is designed to be visible and inspectable, potentially using color coding or visual indicators to show the secured state, allowing easy detection without disassembly
Solution Approach 2:
A sleeve is introduced as an intermediary component that visually indicates the securing state. The sleeve can be seen from the outside and provides visual feedback about whether the securing element is properly positioned, solving the inspection problem while maintaining securing reliability
2Reliability
If a securing element with sleeve is used to secure the medical device, then the device can be secured, but the assembly becomes complex requiring multiple hands or fitters
Solution Approach 1:
The securing system is divided into modular components: a securing element with predefined radial positions and a separate sleeve. This segmentation allows each component to be optimized independently and simplifies the assembly process by allowing pre-assembly of the securing element on the pin before insertion into the bushing
Solution Approach 2:
The securing element is pre-positioned on the support arm pin in a predefined radial position before the final assembly step. This preliminary action allows the element to be ready for engagement, reducing the complexity of the final assembly operation and allowing single-person assembly
3Reliability
If a securing element is inserted into a lateral groove and secured by a sleeve, then the medical device can be secured, but the securing element may fall down during assembly and visual inspection is not easily possible
Solution Approach 1:
The securing element is designed with predefined radial positions that allow it to be dynamically positioned in different states (e.g., inserted vs. secured). The element can be easily inserted in one radial position and then locked in place by the sleeve, providing both ease of operation and reliability
Solution Approach 2:
The sleeve acts as an intermediary that provides both mechanical securing and visual indication. It prevents the securing element from falling down while also allowing visual inspection of the secured state, solving both problems simultaneously
4Difficulty of detecting and measuring
If additional tubular parts and radial screws are used to support the support arm pin, then the locking ring can be visually inspected, but the load capacity depends heavily on wall thickness and design becomes complex
Solution Approach 1:
The invention extracts the visual inspection function from the structural support function. Instead of using a complex tubular part with radial screws to achieve both support and inspection, the solution separates these functions: the bushing provides structural support while a separate sleeve provides visual indication, simplifying the overall design
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~5
AI summary
The invention relates to a securing element for securing a spindle to a bushing, in particular for a medical stand device (1), comprising a support segment (17; 117; 217) designed for arranging the securing element in a predefined axial position on a supporting apparatus (4) of the stand device; an engagement segment (15; 115; 215) designed for interacting with a spindle that can be rotationally supported about an axis of rotation (D) in the supporting apparatus or with a pin (3) of the stand device in order to secure the spindle or the pin in the predefined axial position in relation to the supporting apparatus rotatably within the supporting apparatus; wherein the securing element (10; 110; 210) is designed to be supported on the supporting apparatus in at least one radial position predefined by the securing element, in particular in a mounting preparation position (MP1) and/or in a securing position (MP2), wherein the engagement segment (15; 115; 215) is designed to interact with the spindle or the pin by engagement in the radial direction, in particular in the securing position. The securing element can also be secured in a plurality of radial positions and has accordingly designed coupling regions. The invention further relates to components designed to correspond to the securing element, in particular a supporting apparatus, a cover for the supporting apparatus, and a coupling element. The invention further relates not least to a securing system (70) or a securing mechanism or a mounting set (80), each comprising at least one securing element according to the invention.