Application device for depositing a liquid substance locally on a surface to be treated
OwnerPaul-Felix Gafnerinventor
Life of this patent
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Abstract
This invention concerns a device for applying a medicated solution on the skin for dermatological treatment. This applicator (10) essentially comprises an elongated tubular component (11) with an internal cavity (12) in which is fitted a piston (18) secured to the end of a piston rod (21) integral with a micrometer screw mechanism (23). A chamber (27) made in the inner cavity (12) between the piston (18) and plug (13) is designed to contain the therapeutic solution which may be taken in or discharged through capillary conduits (14 and 17) of the plug (13) and an applicator end (16). This applicator makes it possible precisely to meter and deposit a predetermined volume of the treatment solution on the exact place to be treated.
Claims20
An application device for local deposition of a liquid substance onto a surface to be treated, particularly a medicinal solution onto a cutaneous surface for a dermatological treatment, said device having an elongated element comprising an internal cavity having a volume, a micrometric-screw dosing mechanism located at a second end of the elongate element, and a distribution tip, located at a first end of the elongate element, provided with a capillary conduit communicating with said internal cavity, sand adjustment of the micrometric-screw dosing mechanism causing the volume of said internal cavity to be altered, wherein the internal cavity (12) contains at least one supple pocket containing a predetermined volume of a fluid, and the micrometric-screw dosing mechanism (23) comprises a mobile element for at least one of compressing and allowing expansion of said at least one supple pocket (20) so as to vary the volume of said at least one supple pocket and cause the volume of said internal cavity to be altered thereby controlling flow of the liquid substance into and out of said device.
An application device for local deposition of a liquid substance onto a surface to be treated, said device having a body comprising an elongated tubular element having first and second ends, a micrometric-screw dosing mechanism mounted on the second end of the elongated tubular element and a distribution tip mounted on the first end of the elongated tubular element, the elongated tubular element having an internal cavity defining an internal cavity volume comprising an inner space of the elongated tubular element and an inner space of the distribution tip and adjustment of the micrometric-screw dosing mechanism causing the volume of the internal cavity to be altered, wherein one supple pocket is connected to the tubular element and located within the internal cavity, the internal cavity contains a predetermined volume of a fluid, and the micrometric-screw dosing mechanism communicates with the one supple pocket so as to alter the volume of the one supple pocket and thereby vary the volume of the internal cavity.
An application device for local deposition of a liquid substance onto a surface to be treated, said device having a body comprising an elongated tubular element having first and second ends, a micrometric-screw dosing mechanism mounted on the second end of the elongated tubular element and a distribution tip mounted on the first end of the elongated tubular element, the elongated tubular element having an elongate conduit with first and second opposed ends, the first end communicating with a first supple pocket and the second end being sealed by a second supple pocket, an internal cavity having an internal cavity volume comprising at least an inner space of the distribution tip, and adjustment of the micrometric-screw dosing mechanism causing the volume of the internal cavity to be altered, wherein the first supple pocket defines a supple pocket volume, the internal cavity contains a predetermined volume of fluid, and the micrometric-screw dosing mechanism communicates with the first supple pocket, via the second supple pocket and the elongate conduit, so as to alter the volume of the first supple pocket so as to thereby cause the volume of the internal cavity to be varied.
Dependencies are inferred from the claim text.