Method of making molded micro-needles
2004 (English)Patent (Other (popular science, discussion, etc.))
The method relates generally to making hollow micro-projections having side walls and at least one opening in a side wall, by a molding technique. The hollow micro-projections are defined by a first, negative mold defining the exterior shape of said micro-projections and a second, positive mold defining the hollow interior shape of said micro-projections. The method comprises injecting a moldable material into the space between the two molds, in a state where they have been brought together. The positive and negative molds each have an essentially cylindrical geometry. In the process of bringing the molds together, the mold halves are laterally off-set with respect to each other, such that the distance between an inner wall of the negative mold and the positive mold in said area, ranges from zero to a finite distance. Micro-projections and arrays of micro-projections are also provided by the invention.
Place, publisher, year, edition, pages
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-51348OAI: oai:DiVA.org:kth-51348DiVA: diva2:463932
EP 1796778 (2009-09-30)
US 7981346 (2011-07-19)2011-12-122011-12-122013-08-06Bibliographically approved