摘要:
Self-dissolving needle-like or filamentous shape percutaneously absorbable preparations, by which inherently poorly absorbable drugs into the body through the skin is efficiently administered. The preparations are made of at least one material selected from the group consisting of proteins, polysaccharides, polyvinyl alcohols, carboxyvinyl polymers and sodium polyacrylic acids. An active substance contained therein is released in a sustained-release fashion (1) by forming a water-insoluble layer on its surface, (2) by holding the active substance in porous materials, or (3) by imparting a long-acting characteristic to the active substance. The present invention also provides a sheet-like carrier for holding the preparations on at least one of the sides thereof, and a piece of equipment for holding the preparations so as to facilitate the administration of them.
摘要:
The problem of the invention is to provide a microneedle preparation administration apparatus that prevents overdosing caused by duplicate administration within a treatment range of skin, more reliably administers a prescribed dose of a growth factor at an intended optional depth in the dermis, exhibits an intended effect, and avoids pigmentation side effects. The solution to the problem is a microneedle preparation administration apparatus comprising: a guide tube; a pedestal in which at least a part thereof including a front end surface is housed within the guide tube and slides in length direction; and driving means for driving the pedestal toward a front end part of the guide tube, and microneedle preparations being to be attached to the front end surface of the pedestal, and the microneedle preparations being to be pressed out from a front end part of the guide tube, wherein the microneedle preparation has a first portion having a tip end part and containing an objective substance, and a second portion having a bottom part and not containing the objective substance, and the front end surface of the pedestal is struck on skin at a collision pressure of 30 N to 200 N per 1 cm 2 .
摘要:
It is an objective to provide a microneedle and a microneedle array formed from a self-dissolving base which can realize higher absorption efficiency and a higher pharmacological availability. A preparation 1 for body surface application has two sections divided in the insertion direction, namely, an acral portion 5 and a rear end portion 6. The acral portion 5 is a section including a body surface insertion end 2, and holds a target substance soluble in base. The rear end portion 6 is a section including a pressing end 3, and is formed mainly only from the base. The rear end portion 6 does not hold the target substance. When the preparation 1 for body surface application is inserted into a body surface such as the skin, since the target substance is contained in the acral portion 5, even if part of the rear end side thereof is subsequently not fully inserted into the body surface, high absorption efficiency and high pharmacological effect can be realized where the actual dose of the target substance is not below the desired amount of the drug.
摘要:
A microneedle patch with which a treatment is reliably completed in a short time when a microneedle is administered into skin or mucous membrane is provided. A microneedle patch (100F) includes a base member (101) and a plurality of microneedles (103g) supported by the base member (101). Each microneedle (103g) includes a top-section layer (104) comprising a biologically active substance to be inserted in dermis (310), and an intermediate layer (106) provided between the top-section layer (104) and the base member (101), having a composition having breaking strength weaker than breaking strength of a composition of the top-section layer (104), and having a thickness of 5 µm and 100 µm inclusive.
摘要:
Microneedle sheets are produced by injecting a needle raw material into a stamper formed with a concavity in a base material. However, because the stamper concavity is very small, there is the problem that air cannot escape due to air and surface tension of the material, thereby preventing a needle from being formed in part. The present invention provides a stamper for producing a microneedle sheet. The stamper comprises a sheet-like base material including a conical concavity formed from a first surface of the sheet-like base material toward a second surface thereof; and a through-hole formed from a bottom of the concavity toward the second surface. Air can escape via this through-hole, allowing a microneedle sheet which is filled with a needle raw material as far as the bottom of the concavity to be obtained.
摘要:
An oral administrable enteric formulation of mucopolysaccharide is provided by using an absorption enhancer for mucopolysaccharide comprising of fatty acid having 6 to 14 carbon atoms or salt, ester and amide derivative thereof; steroid carboxylic acid, or salt, ester and amide derivative thereof; and aliphatic poly-basic acid, or salt, ester and amide derivative thereof; or mixture thereof. Said mucopolysaccharide has been only administered by the injection formulations, and the effective blood concentration of said mucopolysaccharide has not been obtained by oral administration.
摘要:
A problem to be solved of the present invention is to provide a drug formulation and a method of administering an active ingredient which allow the active ingredient to be delivered evenly into the site of action in the skin with high efficiency while ensuring stability of the active ingredient over a long time, and which are easily handled and are less stressful for patients. Mean for solving the problem is a microneedle assembly formulation for skin treatment comprising a platform and a plurality of conical or pyramidal microneedles formed on the platform containing a base composed of a bio-soluble and thread-forming polymer substance and an objective substance retained in the base, wherein the objective substance is a substance effective for prevention or treatment of skin senescence, or treatment of skin scar.