US 12,485,280 B1
Unitary enhanced jet spray dermal treatment handpiece
Tim Cranko, Ganei Tikva (IL); Natalya Shtein, Katsrin (IL); Shai Betelman, Katsrin (IL); Amit Barak, Tel Aviv (IL); Hagai Barak, Tel Aviv (IL); and Rona Levin, Shoham (IL)
Filed by Tav-Tech Ltd, Yehud (IL)
Filed on Jul. 21, 2024, as Appl. No. 18/778,991.
Claims priority of provisional application 63/671,285, filed on Jul. 15, 2024.
Int. Cl. A61N 1/32 (2006.01); A61M 37/00 (2006.01); A61N 1/04 (2006.01)
CPC A61N 1/327 (2013.01) [A61M 37/0092 (2013.01); A61N 1/0412 (2013.01); A61M 2037/0007 (2013.01); A61M 2202/0007 (2013.01); A61M 2202/04 (2013.01); A61M 2205/054 (2013.01); A61M 2210/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A multi-technology dermal treatment unitary handpiece which includes:
a unitary jet spray delivery handpiece comprising:
an airtight elongated linear housing having an axis of symmetry, terminating in a delivery head having at least one therapeutic spray nozzle for directing along an axis a therapeutic spray towards the skin of a subject at a spray application distance therefrom, wherein said at least one therapeutic spray nozzle comprises:
at least one gas discharge nozzle aligned with said axis of symmetry for receiving a flow of gas pressurized in the range 40-150 psi and for delivering the flow of gas into the atmosphere so as to result in a shock wave upon exiting said at least one gas discharge nozzle, said at least one gas discharge nozzle having an internal diameter; and
at least one linear liquid discharge nozzle having a longitudinal axis, extending through said at least one gas discharge nozzle coaxially therewith, and having an external diameter whose magnitude is less than said internal diameter of said at least one gas discharge nozzle, said at least one linear liquid discharge nozzle having an opening for discharging a flow of therapeutic liquid into the pressurized flow of gas, thereby to expose the flow of therapeutic liquid to the shock wave so as to cause atomization of the liquid into microdroplets, the atomized liquid combining with the gas flow so as to result in a high velocity, focused, therapeutic jet spray of the microdroplets along an axis, the microdroplets having predefined qualities so as to facilitate trans-epidermal infusion thereof into the skin of the subject at a predetermined spray application distance therefrom; and
a mechanism for positioning said operative end member and said touch surface beyond said at least one therapeutic spray nozzle by a spray application distance having a magnitude within a predetermined range, such that said operative end member is electrically operable when positioned at said spray application distance.