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Title: Microneedles array, die casting method for manufacturing microneedle array and die for manufacturing microneedle array
Other Titles: 微针阵列、制造该微针阵列的模铸方法及所使用的模具
Authors: Yung, KL 
Xu, Y 
Issue Date: 20-Jun-2012
Publisher: 中华人民共和国国家知识产权局
Source: 中国专利 ZL 200910134816.2 How to cite?
Abstract: The invention provides a microneedles array, a method for manufacturing the microneedles array and a die for manufacturing the microneedles array. The microneedles array comprises a base and a plurality of microneedles which are integrated with the base, wherein a liquid storage cavity is arranged in the base, and each microneedle are provided with micro-pinholes which are communicated with the liquid storage cavity; the microneedles array is made of plastics, composite materials, and ceramics or metal materials by injection molding; and each microneedle has at least one inclined surface which is inclined towards the central line of the microneedle, and the outlet of each micro-pinhole is positioned on at least one inclined surface, so that the end of the outlet of the microneedle forms apinnacle part. The die specialized for the invention comprises an upper die, a middle die and a lower die, wherein the middle die and the lower die are provided with cavities for forming the microneedles; and the upper die and the middle die are provided with grooves for forming the base. The three-plate die of the invention can be used for conveniently manufacturing the microneedles array with the pinnacles. Since the stripping process in the injection molding method using three layers of die comprising the upper die, middle die and lower die, the method has the advantages of small die drawing resistance and low manufacturing cost.
Rights: 专利权人: The Hong Kong Polytechnic University.
Appears in Collections:Patent

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