Linden Capital Partners and DW Healthcare Partners have announced the joint acquisition of Edge Systems.

Edge, based in Signal Hill, Cali., is a developer of equipment and consumable products for non-invasive aesthetic skin treatments. Edge’s leading product is the HydraFacial line of facial skin rejuvenation devices.

Linden, based in Chicago, is a PE firm focused exclusively on leveraged buyouts in the healthcare and life sciences industries.

DW Healthcare, with its U.S. headquarters in Park City, Utah, is a healthcare-focused PE firm that targets investments in mid-to-late-stage companies.

Terms of the acquisition were not disclosed.