IO Device Coupler With Resilient Clips for Rotation Resistance
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Solution Overview
Problem
Existing intraosseous (IO) access technologies face challenges in securely coupling IO devices with drivers, leading to issues with rotation and removal of these devices during medical procedures.
Innovation Solution
The development of couplers with a drive hub that has a first end with female threads for coupling with IO devices and a second end with female threads or a recess for coupling with a driveshaft, featuring mechanisms such as interference fits, adhesives, and resilient clips to resist rotation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing coupling mechanisms are used to connect IO devices with drivers, then the coupling can be established, but rotation and removal of devices during procedures cannot be reliably prevented
Solution Approach 1:
The coupling system transitions from static connections to dynamic adaptive coupling. The resilient clips deform during insertion to accommodate the IO device, then elastic recovery creates a tight interference fit that dynamically adapts to prevent rotation while allowing controlled removal when needed.
Solution Approach 2:
The coupling mechanism combines multiple materials with different properties: resilient polymer clips provide elastic deformation and recovery, while the drive hub uses rigid material for structural support. This composite approach creates a coupling that is both compliant during insertion and rigid during operation to prevent rotation.
2Reliability
If interference fits are used to resist rotation, then rotational stability is improved, but insertion difficulty increases
Solution Approach 1:
The resilient clips are pre-configured in an undeformed state that allows easy passage of the IO device during insertion. Once the device is in place, the clips automatically deform and recover to create the interference fit, performing the rotational stabilization action preliminarily without requiring additional manual steps.
Solution Approach 2:
The coupling system changes the physical parameters of the clips during operation. During insertion, the clips are in a compliant state with higher elasticity; after insertion, elastic recovery transforms them into a rigid state with increased friction and interference fit, thereby preventing rotation while maintaining easy insertion.
3Reliability
If secure coupling mechanisms are implemented, then device stability is improved, but device removal complexity increases
Solution Approach 1:
The resilient clips are designed to automatically perform multiple functions: they deform to allow insertion, recover to create the interference fit for rotational stability, and can be released by simple actuation. This self-service mechanism eliminates the need for complex locking systems or multiple components, achieving secure coupling with minimal complexity.
Solution Approach 2:
The coupling mechanism extracts the essential function of securing the IO device to the driver by using only the resilient clips, removing unnecessary complex locking mechanisms. The clips alone provide deformation, interference fit, and rotational prevention, simplifying the overall coupling system while maintaining stability.
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
The proposed solution enhances the secure coupling of IO devices with drivers, preventing rotation and facilitating efficient insertion and removal during medical procedures, thereby improving the reliability and effectiveness of IO access technologies.
Implementation Method 1
an adhesive disposed in the recess and configured to adhere to a driveshaft inserted into the recess
Implementation Method 2
an interference fit between the drive hub and the driveshaft will resist rotation of the drive hub relative to the driveshaft
Implementation Method 3
a resilient clip biased toward an axis of rotation of the drive hub; where the resilient clip will (i) allow the ball to move away from the rotational axis of the drive hub until the detent aligns with the ball, and (ii) press the ball into the detent when the detent is aligned with the ball
Data Source
AI summary
This disclosure includes various embodiments of couplers for coupling intraosseous (IO) devices and drivers, and various embodiments of drivers and kits.