The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
Jun. 21, 2016
Guangzhou Micnano Biotech Co., Ltd, Guangdong, CN;
Guangzhou Novaken Pharmaceutical Co., Ltd., Guangzhou, CN;
Ge Li, Guangdong, CN;
Hangping Chen, Guangdong, CN;
Minmin Zhang, Guangdong, CN;
Qian Zhang, Guangdong, CN;
Gangtao Yao, Guangdong, CN;
GUANGZHOU MICNANO BIOTECH CO., LTD, Guangdong, CN;
GUANGZHOU NOVAKEN PHARMACEUTICAL CO., LTD., Guangzhou, CN;
Abstract
A microneedle chip and manufacturing method. The method comprises injecting, into a female mold, a fluid needle liquid, wherein forming cavities matching the shapes of needles of a microneedle chip are provided at the female mold and form a cavity array, injection inlets are provided at a surface of one side of the female mold, and air ejection openings are provided at a surface of another side of the female mold to form an air ejection surface; covering the air ejection surface of the female mold using a breathable film, and during injection, passing a gas through the breathable film so as to retain the liquid inside the forming cavities; curing the fluid needle liquid to form the microneedle chip, and demolding to obtain the same. By employing the air ejection openings and the breathable film, a liquid is retained while ejecting a gas, providing a favorable micro-injection effect.