Boot Lockable Strap Cam Buckle Mechanism
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Solution Overview
Problem
Current hip distraction systems for hip arthroscopy and other procedures face challenges in securely positioning the femoral head relative to the acetabulum, as existing boot systems lack efficient mechanisms for infinite adjustability and secure retention of the retention strap without manual locking mechanisms.
Innovation Solution
The boot system incorporates cam buckles that allow the retention strap to advance and secure automatically when tension is applied and released, providing infinite adjustability and secure positioning without the need for manual locking, using a mechanism where the cam buckle holds the strap in place when tension is reduced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual locking mechanism is used to secure the retention strap, then the strap can be held in place, but the device complexity increases and ease of operation decreases
Solution Approach 1:
The cam buckle is designed to automatically lock the retention strap in place through its own structural features without requiring external locking mechanisms or manual intervention. The cam surface and corresponding receptacle work together to self-secure the strap when tension is applied.
Solution Approach 2:
The cam surface acts as an intermediary element between the retention strap and the locking function. When the strap is pulled tight, the cam surface automatically engages with the receptacle to secure the strap, eliminating the need for separate locking components.
2Adaptability or versatility
If discrete adjustment positions are provided on the retention strap, then the strap can be secured at specific intervals, but the adaptability and infinite adjustability are limited
Solution Approach 1:
The retention strap transitions from a static system with fixed adjustment holes to a dynamic system where the strap can be adjusted to any position along its length. The continuous adjustment capability is achieved through the cam buckle mechanism that holds the strap at any tensioned position without requiring pre-defined adjustment points.
3Device complexity
If the retention strap requires manual locking to secure, then the mechanism is simple, but the reliability and security of the strap positioning is reduced
Solution Approach 1:
The cam buckle automatically performs the locking function through its geometric design. When tension is applied to the retention strap, the cam surface naturally engages with the receptacle to secure the strap, providing reliable positioning without requiring additional manual locking actions or complex mechanisms.
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
This solution enables secure and adjustable positioning of the retention strap, allowing for effective hip joint distraction during procedures by automatically locking the strap in place when tension is released, facilitating precise control and reducing the risk of misalignment or loosening.
Implementation Method 1
the cam buckle being configured to automatically limit movement of the retention strap through the cam buckle when tension on the retention strap is released
Data Source
AI summary
In some implementations, a boot includes an outer shell having a first side and a second side located opposite the first side. The boot may include a retention strap. The boot may include a first one-way tensioning device coupled to the first side of the outer shell, where the first one-way tensioning device is configured to allow movement of the retention strap in a first direction and to restrain movement of the retention strap opposite the first direction. The boot may include a second one-way tensioning device coupled to the second side of the outer shell, where the second one-way tensioning device is configured to allow movement of the retention strap in a second direction and to restrain movement of the retention strap opposite the second direction.