Integrated system for mechanical processing of lipoaspirate
View Patent ↗An integrated lipoaspirate processing system is disclosed for mechanically processing adipose tissue into a therapeutic material that, in some embodiments, may be directly injected into a subject. The system includes an emulsification device that is used to emulsify the lipoaspirate sample. The emulsified lipoaspirate is then filtered by a microfluidic filtration device. The filtrate of the microfluidic filtration device is then processed in a microfluidic dissociation device. The integrated platform or system helps standardize hydrodynamic processing of lipoaspirate by producing predictable and consistent shear forces and enabling automation in clinical settings. Progressive processing through multiple devices in series enables optimal recovery of regenerative cells while preventing clogging.
1. An emulsification device for processing lipoaspirate comprising:
a substrate having an inlet and an outlet and a fluid passageway extending between the inlet and the outlet;
a first constriction region formed in the fluid passageway adjacent to the inlet;
a second constriction region formed in the fluid passageway adjacent to the outlet; and
an expansion region formed in the fluid passageway between the first constriction region and the second constriction region, wherein the expansion region is formed in multiple planes, such that an angled wall or a surface of the expansion region extends in three dimensions, and the expansion region is configured for turbulent mixing; and
wherein the first constriction region and the second constriction region have a cross-sectional dimension of between 0.5 mm and 4 mm and wherein the expansion region has a maximum cross-sectional dimension within the range of range of about 5 mm to about 30 mm.
2. The emulsification device of claim 1 , wherein the first constriction region and the second constriction region have the same cross-sectional dimensions.
3. The emulsification device of claim 1 , wherein the first constriction region and the second constriction region have a cross-sectional dimension of between 1 mm and 2 mm.
4. The emulsification device of claim 1 , wherein the expansion region has a maximum cross-sectional dimension within the range of range of about 10 mm to about 20 mm.
5. The emulsification device of claim 1 , wherein the expansion region comprises an abrupt expansion defined by the angled wall or surface.
6. The emulsification device of claim 1 , wherein the substrate is a monolithic substrate.
7. A method of using the device of claim 1 , comprising flowing lipoaspirate between the inlet and the outlet a plurality of times.
8. The emulsification device of claim 1 , wherein the expansion region has a circular cross section oriented perpendicular to the fluid passageway.
9. The emulsification device of claim 1 , wherein the angled wall or surface of the expansion region expanding in three dimensions expands from the first constriction and from the second constriction and reaches a maximum expansion substantially in a middle of the emulsification device.
10. The emulsification device of claim 1 , wherein the angled wall or surface of the expansion region expanding in three dimensions expands from the first constriction and from the second constriction in a symmetrical configuration.