Push-Activated Intraosseous Access Device with Automatic Pressure Sensing
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Solution Overview
Problem
Intraosseous access devices require training for correct placement due to the need to coordinate pulling a trigger proximally while applying distal driving force to penetrate bone, and they face complications with bones of varying sizes and densities, especially in emergency situations where trained users may not be available.
Innovation Solution
The development of push-activated intraosseous access devices with a unidirectional activation mechanism, automatic activation and deactivation, and various indicators to guide correct placement, along with replaceable battery packs for reliability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional intraosseous access devices are used requiring coordinated trigger pulling and distal driving force application, then precise control of needle penetration is achieved, but device complexity and difficulty of operation increase
Solution Approach 1:
The patent extracts the trigger mechanism from the activation process, replacing it with automatic pressure-sensitive activation. The trigger is removed as a separate control element, and its function is integrated into the pressure-sensitive switch that automatically activates the motor when a threshold force is applied, thereby simplifying operation while maintaining control.
Solution Approach 2:
The device employs self-service through automatic activation and deactivation mechanisms. The motor automatically starts when the needle contacts bone (detected by pressure sensor) and automatically stops when the medullary cavity is accessed, eliminating the need for continuous manual control and reducing operational complexity.
2Reliability
If traditional intraosseous access devices are used requiring trained users, then correct placement is achieved, but loss of time increases in emergency situations
Solution Approach 1:
The patent implements feedback through pressure sensors that detect when the needle contacts bone and when the medullary cavity is accessed. This feedback automatically controls motor activation and deactivation, ensuring correct placement without requiring trained users to interpret resistance or timing, thereby maintaining reliability while reducing deployment time.
Solution Approach 2:
The device performs preliminary action by pre-programming the activation and deactivation criteria into the control system. The motor is pre-configured to activate at specific pressure thresholds and deactivate after predetermined operation, eliminating the need for real-time decision-making by the user and reducing deployment time while ensuring correct placement.
3Ease of operation
If manual coordination of trigger and driving force is used, then control over distal driving force is achieved, but ease of operation decreases
Solution Approach 1:
The patent replaces the manual mechanical coordination system with an automated electromechanical system. The pressure-sensitive switch and motor control system substitute for the manual coordination of trigger pulling and driving force application, making operation easier while maintaining precise control through electronic sensing and actuation.
Data Source
AI summary
Push activated intraosseous (IO) access devices include power sources such as battery packs or spring driven devices. Intraosseous access devices often require training to ensure correct placement of the access device. The disclosed devices include an intuitive operation with a unidirectional activation and drive force application. The trigger can be both activated and deactivated automatically to prevent premature activation and prevent “backwalling”. The device can include various indicators to further guide a user in placing the device correctly, with little or no training. Devices can further include replaceable battery packs to ensure a full charge is available when the device is used, and to provide a multi-use device that requires less storage.