Surgical Mounting Assembly for High-Torque Low-Profile Coupling
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Solution Overview
Problem
Existing surgical procedural mounting systems lack the ability to transmit high torque and axial loading while being resistant to flexing, and have a limited cross-sectional profile, which is essential for orthopaedic surgery tools like reamers.
Innovation Solution
A mounting system comprising an elongate body with an outer sleeve and inner arms, a locking element, and a gap between the arms and the sleeve, allowing for torque transmission and axial loading while maintaining a low profile, with features like inclined transition surfaces and radially extending sections for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mounting system uses a simple axial retention mechanism, then the device complexity is reduced, but the ability to transmit high torque and axial loading is compromised
Solution Approach 1:
The mounting system is divided into distinct functional segments: an outer sleeve for axial retention, an inner element with arms for radial positioning, and a locking element for securing. This segmentation allows each component to specialize in one function, achieving high torque and axial load transmission without requiring a monolithic complex structure.
Solution Approach 2:
The inner element with its arms is nested within the outer sleeve, creating a compact concentric arrangement. The locking element is slidably received within the inner element's bore. This nested configuration maximizes functional capability within a minimal cross-sectional profile, enabling high strength transmission without increasing overall device complexity.
2Stability of the object's composition
If the mounting system uses a robust connection structure, then the resistance to flexing is improved, but the cross-sectional profile increases
Solution Approach 1:
The nested concentric arrangement of the inner element within the outer sleeve, and the locking element within the inner element, provides robust mechanical engagement and flex resistance while maintaining a compact cross-sectional profile that does not exceed the maximum profile of the surgical instrument itself.
Solution Approach 2:
The mounting system utilizes the radial dimension by extending arms from the inner element into the bore of the outer sleeve, creating engagement in multiple spatial dimensions. This multi-dimensional engagement provides resistance to flexing without requiring increased profile in the primary axial or radial directions.
3Reliability
If the locking element is always engaged with the arms, then the retention is improved, but the ease of detachment is worsened
Solution Approach 1:
The locking element is designed to be slidable within the inner element's bore, transitioning between engaged and disengaged positions. This dynamic capability allows the system to switch between secure retention during use and easy detachment when needed, with the locking element's position controlling the level of retention security.
Solution Approach 2:
The resilient arms automatically engage with the locking element when it is in the engaged position, providing self-retention without requiring additional active components. When the locking element is retracted, the arms naturally disengage, enabling easy detachment without complex release mechanisms.
Data Source
AI summary
Mounting systems for connection to a surgical device, kits including those and the surgical devices and methods of use are disclosed. The mounting system comprising; an elongate body having a proximal end and a distal end; an outer sleeve being provided towards the distal end of the elongate body, the outer sleeve defining an internal bore; an inner element with a distal end facing the internal bore, the inner element providing one or more arms that extend from the distal end of the inner element into the bore, the one or more arms being spaced from the outer sleeve to define a gap between a side of one or more of the arms and the outer sleeve, the inner element at least partially defining a second bore; a locking element slidably provided in the second bore, the locking element having a first state where the locking element is provided in a first position adjacent to a distal portion of one or more of the arms and a second state where the locking element is retracted from the first position adjacent to a distal portion of one or more of the arms.