Medicament-loaded transdermal reservoir and method for its formation
First Claim
1. A method for loading a material into a hydrophilic transdermal medicament delivery reservoir comprises:
- providing a transdermal delivery device including a backing having an interior surface comprising a bibulous reservoir having a patient contact surface disposed on said interior surface;
placing a section of an absorbent material on said patient contact surface of said bibulous reservoir;
applying a preselected aliquot of a material to be charged into said bibulous reservoir onto said absorbent material; and
allowing said bibulous reservoir having said absorbent material with said aliquot of the material applied thereto to stand for a sufficient time for the material to be absorbed into said bibulous material, thereby loading said material into said reservoir.
1 Assignment
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Accused Products
Abstract
A transdermal reservoir and method for loading a material into a reservoir includes providing a bibulous reservoir blocking a backing with an interior surface having a patient contact surface with a shape disposed on the interior surface of the backing. A closure is sized and shaped to engage the backing for forming a releasable seal to isolate the bibulous reservoir from the ambient environment. The closure has an inside surface with a section of an absorbent material disposed thereon. When the closure is disposed on the backing, the absorbent material is positioned in intimate physical contact with the reservoir. The method includes applying an aliquot of a material to the absorbent material,. placing the closure on the backing so that the absorbent material is in intimate physical contact with the contact surface of the bibulous reservoir and the closure forms the releasable seal with the backing. The reservoir is allowed to stand for a sufficient time to allow the aliquot to be absorbed into the bibulous material thereby loading the reservoir.
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Citations
25 Claims
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1. A method for loading a material into a hydrophilic transdermal medicament delivery reservoir comprises:
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providing a transdermal delivery device including a backing having an interior surface comprising a bibulous reservoir having a patient contact surface disposed on said interior surface;
placing a section of an absorbent material on said patient contact surface of said bibulous reservoir;
applying a preselected aliquot of a material to be charged into said bibulous reservoir onto said absorbent material; and
allowing said bibulous reservoir having said absorbent material with said aliquot of the material applied thereto to stand for a sufficient time for the material to be absorbed into said bibulous material, thereby loading said material into said reservoir. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for loading a material into an iontophoresis reservoir electrode comprises:
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providing an iontophoresis reservoirelectrode including a backing with an interior surface comprising an electrode, a bibulous reservoir having a patient contact surface with a shape disposed on said electrode and in electrical contact with said electrode;
providing a closure sized and shaped to engage said backing for forming a releasable seal to isolate said bibulous reservoir from ambient environment, said closure being removable from said backing to expose said patient contact surface for use, said closure having an inside surface with a section of an absorbent material disposed thereon, said section having a first surface so that when said closure is disposed on said backing, said absorbent material first surface is positioned in intimate physical contact with said patient contact surface of said reservoir;
applying a preselected aliquot of a material to said absorbent material on said inside surface of said closure;
placing said closure on said backing so that said first surface of said absorbent material is in intimate physical contact with said patient contact surface of said bibulous reservoir and said closure forms said releasable seal with said backing;
allowing said iontophoretic reservoir-electrode having said closure applied thereto to stand for a sufficient time, thereby allowing said aliquot of said material to be absorbed into said bibulous reservoir thereby loading said reservoir-electrode. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for preparing a charged reservoir-electrode unit comprising a first reservoir-electrode disposed to operate as an anode and a second reservoir-electrode disposed to operate as a cathode comprises:
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providing a backing material in the form of a first web having an interior surface;
providing a first reservoir-electrode having a first surface area, said first reservoir-electrode comprising an first electrode disposed on said interior surface of said backing, a first bibulous reservoir having a first patient contact surface having a shape being disposed on and in electrical contact with said first electrode;
providing a second reservoir-electrode having a second surface area, said reservoir-electrode comprising a second electrode disposed on said interior surface of said backing in electrical isolation from said first electrode, a bibulous second reservoir having a second patient contact surface having a shape being disposed on and in electrical contact with said second electrode;
providing a closure in the form of a second web disposed to engage said backing for forming a releasable seal to isolate said first and said second bibulous reservoirs from ambient environment, said closure being removable from said housing to expose said patient contact surfaces for use, said closure having an inside surface with sections of an absorbent material in register with said first and said second reservoir-electrodes disposed thereon, each said sections having a first surface with a similar shape to each of said patient contacting surfaces of said bibulous reservoirs so that when said closure is disposed on said backing, said absorbent materials first surfaces are each positioned in intimate physical contact with said contact surface of said reservoirs;
applying a preselected aliquot of a first material to said section in register with said first reservoir and an aliquot of a second material to said section in register with said second reservoir;
advancing said first web and said second web in a direction so that said first surface of said absorbent materials are in intimate physical contact with said patient contact surfaces of said bibulous reservoirs and said closure forms said releasable seal with said backing;
cutting each of said first and said second reservoir-electrodes each having said closure thereon from said webs as a unit; and
allowing said iontophoretic reservoir-electrode unit having said closure applied thereto to stand for a sufficient time, thereby allowing said aliquots of said materials to be absorbed into said bibulous materials thereby loading said reservoir-electrodes.
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25. An iontophoresis reservoir-electrode comprising:
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a backing with an interior surface comprising an electrode, bibulous reservoir loaded with a preselected aliquot of a material and having a patient contact surface with a shape disposed on said electrode and in electrical contact with said electrode;
a closure sized and shaped to engage and being disposed on said backing for forming a releasable seal to isolate said bibulous reservoir from ambient environment, said closure being removable from said backing to expose said patient contact surface for use, said closure having an inside surface with a section of an absorbent material disposed thereon, said section having a first surface with a similar shape to said patient contact surface of said bibulous reservoir with said closure disposed on said backing, so that said absorbent material first surface is positioned in intimate physical contact with said contact surface of said bibulous reservoir when said closure is disposed on said backing and removed from patient contact surface of said bibulous reservoir when said closure is removed from said backing.
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Specification