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:
Mar. 20, 2012
Filed:
Jan. 05, 2009
Mingwei Zhu, Nanjing, CN;
Yanfeng Chen, Nanjing, CN;
Zhenlin Wang, Nanjing, CN;
Yanqing LU, Nanjing, CN;
Haixiong GE, Nanjing, CN;
Yuefeng Tang, Nanjing, CN;
Mingwei Zhu, Nanjing, CN;
Yanfeng Chen, Nanjing, CN;
Zhenlin Wang, Nanjing, CN;
Yanqing Lu, Nanjing, CN;
Haixiong Ge, Nanjing, CN;
Yuefeng Tang, Nanjing, CN;
Nanjing University, Nanjing, CN;
Abstract
A novel method suitable for commercially mass production of hollow microneedle with high quality for delivery of drugs across or into biological tissue is provided. It typically includes the following processes: (1) coating an elongated template of a first material with a second material to form a cover; (2) removing tips of the template and cover to form an opening in the cover; and (3) removing the template of the first material to obtain hollow microneedles of the second material. This simple, efficient and cost-effective fabrication method can mass produce hollow microneedle arrays involving no complicated and expensive equipments or techniques, which can be used in commercial fabrication of hollow needles for delivering drugs or genes across or into skin or other tissue barriers with advantages of minimal damage, painless, long-term and continuous usages.