The behavior of the thin liquid ﬁlm formed between a bubble and hydrophobic membrane is of high interest in applications where separating two-phase mixtures is beneﬁcial. One such application is in-situ vapor extraction heat sinks. In these systems, high heat transfer rates are accomplished by taking advantage of the high energy associated with phase change. However, the generation of vapor may lead to dry-out and subsequent critical temperatures if the vapor bubble is not extracted proﬁciently. An existing model for single bubble extraction in a conﬁned geometry theoretically predicts the bubble diameter and relevant forces acting on the bubble from inception to extinction. However, the model needed to be supplemented with empirical correlations due to the unknown conditions for bubble rupture and the behavior of the three-phase contact line on the supply and extraction surfaces. In this work, the Stokes-Reynolds-Young-Laplace (SRYL) lubrication model is studied and adapted to the conﬁned geometry of a growing bubble to numerically simulate the thin liquid ﬁlm draining event at the extraction surface. To the author’s knowledge, this is the ﬁrst implementation of the SRYL lubrication model to the special case of conﬁned bubbles under growth. Experimental data from the existing model is used to qualitatively examine the behavior of the thin liquid ﬁlm at the extraction surface. It was found that the approach velocity and bubble radius upon reaching the extraction surface was related to the formation of a hydrodynamic dimple in the thin liquid ﬁlm. The hydrodynamic dimple is characterized by a barrier rim, where the thinnest part of the liquid ﬁlm is no longer at the apex of the bubble. Larger radii bubbles with lower Laplace pressures are more easily deformed as they approach the extraction surface and exhibit the hydrodynamic dimple at larger liquid ﬁlm thicknesses. Results show that the minimum liquid ﬁlm thickness at the predicted time of rupture is relatively consistent, ranging from ≈ 3.16µm to ≈ 2.72µm for conﬁned bubble gap heights ranging from 0.52mm to 1.90mm, respectively. It is believed this is due to a balance of approach velocity, the degree of bubble deformation and resulting hydrodynamic pressure within the interaction zone of the liquid ﬁlm. Further, these minimum liquid ﬁlm thicknesses are outside the bounds of typical long range forces, suggesting other rupture mechanisms may occur in conﬁned geometries. Due to the stochastic nature of liquid ﬁlm rupture, the rupturing event is not modelled in this study and is suggested as future work.