摘要:
An iontophoretic device structure of the dissolution-on-use type is provided, wherein an ionized drug is transdermally or transmucosally administered into a living body. The device structure comprises (a) a non-polarizable electrode, (b) a hydrophilic, polymeric gel layer containing an ion exchange resin which is able to specifically inhibit the movement of ions dissolved out from the electrode while in use, and (c) a drug layer containing a drug in a dry condition in a drug retaining membrane, wherein when said device is in use, said drug layer is brought into contact with said hydrophilic, polymeric gel layer so that said drug in the dry condition is dissolved. A humectant may be contained in the hydrophilic, polymeric gel layer and/or the drug layer.
摘要:
Provided a patch activated in use capable of uniformly activating a drug by supplying a solution when used. The patch activated in use comprises an absorber 11 containing a dry drug 10 and formed of a material capable of absorbing a liquid, a wall material 13 arranged around the absorber 11 and having an adhesive layer 12 on the lower surface thereof, a support 15 arranged on the absorber 11 and the wall material 13 and having an opening 14 at the center, a diaphragm 20 arranged on the support 15, and a dissolution liquid reservoir 18 arranged on the diaphragm 20, holding a dissolution liquid dissolving the drug in a space with the diaphragm 20 and having a protruding portion 17 which breaks the diaphragm 20 by pressure. The protruding portion 17 has a liner top end portion and arranged in contact or in the proximity with the diaphragm 20. A liner 19 is detachably provided on the lower surface of the absorber 11 and adhesive layer 12.
摘要:
A transdermal drug administration system with microneedles which can perforate the skin (stratum corneum) by a simple operation at the time of transdermal administration of a physiologically active substance (drug) is provided. The present transdermal drug administration system with microneedles comprises microneedle device (50) having a plurality of microneedles (51) which can perforate the skin and a plurality of solution passages (52); absorbent (11) which is disposed on microneedle device (50), comprising dried drug (10) and a material which can absorb liquid; and dissolution liquid reservoir (18) which is disposed on absorbent (11) and stores dissolution liquid (16) for dissolving drug (10) and in which a diaphragm (20) provided between absorbent (11) can be broken by pressing. Dissolution liquid reservoir (18) is pressed to break diaphragm (20), and at the same time, the microneedle (51) perforates the skin (stratum corneum), and drug (10) dissolved in dissolution liquid (16) is transmitted through microneedle device (50) to the skin.
摘要:
A handling-convenient device for iontophoresis, which can supply spotted regions suffering from disease with a proper quantity of current at the same time. The device for iontophoresis includes a power source apparatus having a plurality of output terminals outputting currents of predetermined values adjusted by a plurality of current control circuits, respectively, and a plurality of connecting cords, each cord being connected with one of the output terminals of the power source apparatus at one end thereof and being connected with an electrode structure at the other end. The connecting cords are attached with the power source apparatus in a mutually attachable/detachable fashion via connection terminals. The power source apparatus has an LED located thereon to notify of the energization status of the device and a power switch externally located thereon to control starts and stops of the apparatus.
摘要:
An adjuvant for transdermal or transmucosal administration which comprises at least one substance selected from an aliphatic alcohol, a free fatty acid and a fatty acid derivative but does not contain a substance represented by the following formula: wherein R3 and R4 may together form a cyclic ring, and R1 and R2 independently represent an alkyl side chain having 1 to 16 carbon atoms.
摘要翻译:一种用于经皮或经粘膜给药的佐剂,其包含至少一种选自脂族醇,游离脂肪酸和脂肪酸衍生物的物质,但不含下式表示的物质:其中R3和R4可以一起形成环状 R 1和R 2独立地表示碳原子数1〜16的烷基侧链。
摘要:
To provide an easily producible mass-production type iontophoresis device having a structure that a dissolution liquid-storing container is integrated with an iontophoresis electrode, a dissolution liquid and a drug can be mixed by simple operations, and it is free from a risk of leakage of electricity. The device comprises an electrode film having an electrode layer (2) formed on a base (1), a drug-loaded member (3) arranged on the electrode-layer-forming side of the electrode film, and a dissolution liquid-storing container (5) arranged on the non-electrode-layer-forming side of the electrode film, wherein the electrode film is provided with a dissolution liquid passing hole (9), a flange (5a) of the dissolution liquid-storing container (5) is bonded to the electrode film via an aluminum lid member (7) which covers the dissolution liquid passing hole (9), and the aluminum lid member (7) is arranged within the flange outer diameter of the dissolution liquid-storing container.
摘要:
To provide an easily producible mass-production type transdermal drug device having a structure that a dissolution liquid and a drug can be mixed by simple operations. The device comprises an electrode holder (1) having an electrode layer (1b) formed on a substrate (1a), a drug-loaded member (2) provided on a surface of the electrode holder (1) for forming the electrode layer (1b), and a dissolution liquid-storing container (5) provided on a surface of the electrode holder (1) for not forming the electrode layer (1b), wherein a dissolution liquid passing hole (8) is formed in the electrode holder (1), a flange (5a) of the dissolution liquid-storing container (5) is bonded to the electrode holder (1) via a lid material (6) covering the dissolution liquid passing hole (8), the dissolution liquid-storing container (5) has a protrusion (5b) opposing the dissolution liquid passing hole (8), and the protrusion (5b) has a recessed surface at the tip.
摘要:
An adjuvant for transdermal or transmucosal administration which comprises at least one substance selected from an aliphatic alcohol, a free fatty acid and a fatty acid derivative but does not contain a substance represented by the following formula: wherein R3 and R4 may together form a cyclic ring, and R1 and R2 independently represent an alkyl side chain having 1 to 16 carbon atoms.
摘要:
The invention provides a device for a percutaneous absorption preparation, provided with a solution storage container which can exhibit good solution migration independently of the level of force. The device for a percutaneous absorption preparation comprises an electrode film comprising a base member (1) and an electrode layer (2) and having a dissolution liquid passage hole (9), a drug impregnation member (3) mounted on the electrode layer (2) side of the electrode film, and a dissolution liquid storage container (5) bonded to the base member (1) side of the electrode film via a lid member (7) covering the solution passage hole (9). The dissolution liquid storage container (5) comprises a bottom and a sidewall. A protrusion (5b) which faces the dissolution liquid passage hole (9) is provided at the center of the bottom, and the sidewall is provided with a vertically folded part (5c).
摘要:
An iontophoresis device which allows excellent transdermal absorption of an anionically chargeable physiologically active substance is provided. The iontophoresis device comprises a cathode (25) and an interface (31) or (32) composed of a cationically chargeable membrane, wherein an anionically chargeable physiologically active substance (drug) (10) is placed between the cathode (25) and the interface (31) or in the interface (32). A wall member (13) with an adhesive layer (12) in the bottom is placed around an absorbent (11), and a support (15) having an opening (14) in the center is placed on the absorbent (11) and the wall member (13). When the device is used, the dissolution liquid for the drug is supplied to the absorbent (11) through the opening (14). The absorbent (11) and the interface (31) or (32) become wet with the dissolution liquid and the drug (10) is activated uniformly.