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    • 6. 发明申请
    • Molded Micro-Needles
    • 成型微针
    • US20070255205A1
    • 2007-11-01
    • US11661113
    • 2005-08-30
    • Patrick GrissGoran Stemme
    • Patrick GrissGoran Stemme
    • A61M37/00
    • B29C45/2628A61K9/0021A61M37/0015A61M2037/003A61M2037/0053B29C2045/0094B81B2201/055B81B2203/0361B81C99/0085B81C2201/034
    • Method of 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 the micro-projections and a second, positive mold defining the hollow interior shape of the micro-projections. The method includes 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 the area, ranges from zero to a finite distance. Micro-projections and arrays of micro-projections are also disclosed.
    • 通过成型技术的具有侧壁和侧壁中的至少一个开口的中空微型突起的方法。 中空微突起由限定微突起的外部形状的第一负模具和限定微突起的中空内部形状的第二正模定义。 该方法包括将可模塑材料注入到两个模具之间的空间中,并将它们合并在一起。 正负模具各自具有基本上圆柱形的几何形状。 在将模具合在一起的过程中,半模相对于彼此横向偏移,使得阴模的内壁和该区域中的正模之间的距离从零到有限距离 。 还公开了微突起和微突起的阵列。
    • 9. 发明授权
    • Micro needles and method of manufacture thereof
    • 微针及其制造方法
    • US07258805B2
    • 2007-08-21
    • US10486541
    • 2002-08-14
    • Göran StemmePatrick Griss
    • Göran StemmePatrick Griss
    • A61M5/00
    • A61M37/0015A61M2037/003A61M2037/0053
    • A micro-needle protrudes from a support member. The needle has a needle body portion, a closed pointed tip portion, and an inner lumen extending through the support member and into the protruding needle. The needle body portion has at least one side opening communicating with the inner lumen. The method of making the needle comprises providing a mask on the front side of an etchable wafer such that the vertical projection of the mask at least partially covers the extension of a hole made in the back side. The mask is isotropically underetched to remove wafer material. An anisotropic etch forms a protruding structure. Optionally a second isotropic etch on the protruding structure exposes the blind hole. Optionally a final anisotropic etch extends the needle without forming side openings.
    • 微针从支撑构件突出。 针具有针体部分,封闭的尖端部分和延伸穿过支撑部件并进入突出针的内腔。 针体部具有与内腔连通的至少一个侧开口。 制造针的方法包括在可蚀刻晶片的正面上设置掩模,使得掩模的垂直投影至少部分地覆盖在后侧形成的孔的延伸部。 掩模各向同性地去除晶片材料。 各向异性蚀刻形成突出结构。 可选地,突出结构上的第二各向同性蚀刻暴露盲孔。 可选地,最终的各向异性蚀刻使针不会形成侧面开口。