. 2023 Aug 30;16:e00469. doi: 10.1016/j.ohx.2023.e00469

Table 20.

Variable definitions, values, and source for estimating delivery force.

Variable	Definition	Value	Source
$V_{d o s e}$	Dose volume	1.0 $\times$ 10^-9 m³	Reservoir property
$A_{i n f}$	Cross-sectional area of infusion line	1.12 $\times$ 10^-7 m²	Infusion line property
$t_{d o s e}$	Time to deliver dose	1 s	Selected time period
$ρ_{w a t e r}$	Density of water	997 kg m⁻³	Reference value
$g$	Acceleration due to gravity	9.81 m s⁻²	Reference value
$h$	Height difference	0.7 m	Length of infusion line
$A_{r e s}$	Cross-sectional area of reservoir	1.13 $\times$ 10^-4 m²	Infusion line property