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The fundamental principle behind any Intraosseous technique is based on this unique complex of blood vessels. A system that penetrates into the Trabecular space and introduces liquids at a positive pressure will cause increased diffusion "with the current" and in fact pass on quantities of water into the blood system, which drain the Trabecular cavities.
In simple terms, we are introducing material into a filtering system with adaptable permeability.
Why the adaptable permeability? For the simple reason that, as the pressure of the flow into the system increases, the molecules that make up the cell membranes of the Trabecular canals, the Haverisan canals and the Volkman canals expand, causing larger drainage spaces for permeability.
The result, naturally, is a higher flow volume.
Once the introduction of fluid at high pressure is stopped, the system immediately returns to its original size, and will continue to enable transmission of fluids, although at a slower rate, as long as the external pressure created by the fluid is higher than the pressure inside the bone.
These two configurations enable the healthcare provider to supply the rate of flow according to the patient's condition. For example, a patient requiring medication through a drip counter will not need a high-pressure flow. However, a patient who is in hypovolemic shock can receive the necessary quantities of fluids through high-pressure infusion.
This short overview can be summarized by the importance of the channeled structure of the bone interior through which accelerated diffusion allows fluids and medications to be introduced into the blood system.
