Hand-Crank Intraosseous Injection for Emergency Vascular Access
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Solution Overview
Problem
Existing IV access methods are often difficult or impossible in emergency situations, leading to delayed or impossible administration of lifesaving drugs and fluids, particularly in patients with depleted peripheral veins or anatomical scarcity, resulting in unnecessary pain and potential mortality.
Innovation Solution
A manually driven intraosseous injection device with a housing and transmission system, allowing for manual rotation of a penetrator assembly through bone into the intraosseous space, providing an alternative access route for drug and fluid administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional IV access methods are used, then vascular system access can be achieved, but the procedure becomes difficult or impossible in emergency situations with depleted peripheral veins or anatomical scarcity
Solution Approach 1:
The patent introduces an intraosseous (IO) space as an intermediary access route when traditional IV access fails. The IO injection device penetrates the bone to reach the intraosseous space, which serves as a mediator to deliver drugs and fluids into the vascular system when peripheral veins are depleted or inaccessible. This resolves the contradiction by providing an alternative pathway that maintains reliability while bypassing operational difficulties of traditional IV access.
2Ease of manufacture
If manual actuation is used to drive the penetrator assembly, then production costs are reduced, but the device requires more complex transmission mechanisms
Solution Approach 1:
The patent replaces complex powered transmission systems with a simple manual actuation mechanism. The hand-crank operable member directly engages with the penetrator assembly through basic mechanical elements (gears or direct drive), eliminating the need for motors, batteries, or electronic controls. This substitution reduces production costs while maintaining sufficient functionality for emergency use, resolving the contradiction between manufacturing simplicity and operational capability.
3Productivity
If rapid access to intraosseous space is achieved, then administration of lifesaving drugs and fluids is accelerated, but the device requires manual rotation capability through bone
Solution Approach 1:
The patent employs dynamic mechanical elements including a hand-crank that converts rotational motion into linear penetration force. The transmission system includes movable gears or direct-drive mechanisms that translate the operator's manual rotation into controlled penetration through bone tissue. This dynamic mechanism enables rapid access by allowing the operator to apply sustained rotational force, resolving the contradiction between speed of access and manual effort required.
Data Source
AI summary
Manually driven intraosseous devices and associated methods are described. The intraosseous device includes a housing and a transmission at least partially disposed within the housing. The transmission includes a first portion and a second portion. The second portion includes a manual actuator that is at least partially disposed outside of the housing. The intraosseous device also includes a penetrator assembly releasably connected to the first portion of the transmission. The transmission is configured to transmit a force, which is applied manually to the manual actuator, to the penetrator assembly to rotate the penetrator assembly relative to the housing and to drive the penetrator assembly through a bone into an intraosseous space. The manual actuator is a hand crank that is configured to be manually cranked by an operator to transfer rotational force to the first portion of the transmission.