STAMPER FOR MICRONEEDLE SHEET, PRODUCTION METHOD THEREOF, AND MICRONEEDLE PRODUCTION METHOD USING STAMPER
First Claim
1. A stamper for producing a microneedle sheet formed on a fixing substrate, the stamper comprising 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.
1 Assignment
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Accused Products
Abstract
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.
26 Citations
10 Claims
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1. A stamper for producing a microneedle sheet formed on a fixing substrate, the stamper comprising a sheet-like base material including:
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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.
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2. A method for producing a stamper for a microneedle sheet formed on a fixing substrate, the method comprising the steps of:
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forming a conical concavity from a first surface of a sheet-like base material toward a second surface of the base material; and forming a through-hole from a bottom of the concavity toward the second surface. - View Dependent Claims (3, 4)
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5. A method for producing a microneedle sheet formed on a fixing substrate, the method comprising the steps of:
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forming a conical concavity from a first surface of a sheet-like base material toward a second surface of the base material; forming a through-hole from a bottom of the concavity toward the second surface to obtain a sheet-like stamper; injecting a needle raw material from the first surface of the stamper; and sticking a fixing substrate on the first surface. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification
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- Resources
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Current AssigneeBioserentach Co., Ltd.
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Original AssigneeBioserentach Co., Ltd.
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InventorsOkada, Tatsuya, Terada, Toyoharu, Satouchi, Yoshitomo, Takada, Kanji, Motoi, Masashi, Honda, Kenshin
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Application NumberUS12/674,716Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current163/5CPC Class CodesA61M 2037/003 having a lumenA61M 2037/0046 Solid microneedlesA61M 2037/0053 Methods for producing micro...A61M 37/0015 by using microneedlesB29C 59/02 by mechanical means, e.g. p...
