Methods and systems for material transport across an impermeable or semi-permeable membrane via artificially created microchannels
AssigneeGuided Therapy Systems, LLC
InventorMichael H. Slayton
Life of this patent
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Abstract
Systems and methods are disclosed for transporting a transport target across a membrane that is impermeable or semi-permeable to the transport target via artificially created microchannels or through hypodermic microneedles. The transport target can be a medicant and the membrane can be a stratum corneum layer of skin. The transport is enhanced by the application of ultrasound energy having a high peak intensity, which generates an inertial cavitation effect, an acoustic streaming effect, or both.
Claims20
A method for transporting a medicant across a stratum corneum layer of a skin and into a dermis layer of the skin, the method comprising:
- a) contacting a top surface of the stratum corneum layer with the medicant;
- b) creating a microchannel in the membrane, the microchannel providing fluid communication between the top surface of the stratum corneum layer and an epidermis layer of the skin;
- c) directing a first acoustic energy field from an acoustic energy source or a first photon-based energy field from a photon-based energy source to the medicant, thereby driving the transport target through the microchannel and into the epidermis layer of the skin;
- and
- d) subsequent to the medicant being driven into the epidermis layer of the skin, applying a second acoustic energy field to the medicant, thereby driving the medicant from the epidermis layer of the skin and into the dermis layer of the skin.
A method for transporting a medicant across a stratum corneum layer of a skin and into a dermis layer of the skin, the method comprising:
- a) inserting a hypodermic microneedle into the stratum corneum layer from a top surface, an interior of the hypodermic microneedle in fluid communication with a reservoir containing the medicant, the hypodermic microneedle providing fluid communication between the reservoir and the epidermis layer of the skin;
- b) directing a first acoustic energy field from an acoustic energy source or a first photon-based energy field from a photon-based energy source to the medicant, thereby driving the medicant through the hypodermic microneedle and into the epidermis layer of the skin;
- and
- c) subsequent to the medicant being driven into the epidermis layer of the skin, applying a second acoustic energy field to the medicant, thereby driving the medicant from the epidermis layer of the skin and into the dermis layer of the skin.
A method for transporting a transport target across a membrane that is semi-permeable or impermeable to a transport target, the method comprising:
- a) contacting a top surface of the membrane with the transport target;
- b) creating a microchannel in the membrane, the membrane having a top membrane surface and a bottom membrane surface, the microchannel providing fluid communication between the top membrane surface and a first material layer contacting the bottom membrane surface;
- and
- c) directing a first acoustic energy field from an acoustic energy source or a first photon-based energy field from a photon-based energy source to the transport target, thereby driving the transport target through the microchannel and into the first material layer.
Dependencies are inferred from the claim text.