Hollow microneedle array article
First Claim
1. An article, comprising:
- a first side comprising;
a central portion defined by a first edge;
a microneedle-free peripheral portion that substantially surrounds the central portion; and
a plurality of spaced-apart hollow microneedles extending from the central portion in a first direction;
wherein each microneedle of the plurality comprises a body that includes;
an outer surface;
a base segment having a base and a first shape that is defined by the outer surface;
a tip segment having a tip and a second shape that is defined by the outer surface, wherein the second shape is distinct from the first shape;
a transition plane that delineates the base segment and the tip segment;
a hollow channel extending through the body of the microneedle from a first opening proximate the tip to a second opening proximate the base;
a central axis;
wherein the plurality of hollow microneedles forms an array that comprises three or more perimeter microneedles disposed proximate the first edge;
wherein the central portion is not coplanar with the peripheral portion;
wherein the peripheral portion is canted in a second direction relative to the central portion at an angle of 10°
to 80°
, wherein the second direction is opposite the first direction;
wherein an angle, defined by an intersection of the central axis of at least one of the plurality of microneedles and a shortest line extending from the first edge and through the transition plane of the at least one microneedle, is less than about 50°
.
5 Assignments
0 Petitions
Accused Products
Abstract
An article 100 having a first side 112 that has a central portion 130 defined by a first edge 134, a microneedle-free peripheral portion 140 that substantially surrounds the central portion, and a plurality of spaced-apart hollow microneedles 160. Each microneedle has a body that includes an outer surface 163; a base segment 166 having a base 162 and a first shape; a tip segment 168 having a tip 164 and a second shape, wherein the second shape is distinct from the first shape; a transition plane 167 that delineates the base segment and the tip segment; and a central axis 180. An angle, defined by an intersection of the central axis of at least one microneedle and a shortest line extending from the first edge and through the transition plane of the at least one microneedle, is less than about 50°.
33 Citations
19 Claims
-
1. An article, comprising:
-
a first side comprising; a central portion defined by a first edge; a microneedle-free peripheral portion that substantially surrounds the central portion; and a plurality of spaced-apart hollow microneedles extending from the central portion in a first direction; wherein each microneedle of the plurality comprises a body that includes; an outer surface; a base segment having a base and a first shape that is defined by the outer surface; a tip segment having a tip and a second shape that is defined by the outer surface, wherein the second shape is distinct from the first shape; a transition plane that delineates the base segment and the tip segment; a hollow channel extending through the body of the microneedle from a first opening proximate the tip to a second opening proximate the base; a central axis; wherein the plurality of hollow microneedles forms an array that comprises three or more perimeter microneedles disposed proximate the first edge; wherein the central portion is not coplanar with the peripheral portion; wherein the peripheral portion is canted in a second direction relative to the central portion at an angle of 10°
to 80°
, wherein the second direction is opposite the first direction;wherein an angle, defined by an intersection of the central axis of at least one of the plurality of microneedles and a shortest line extending from the first edge and through the transition plane of the at least one microneedle, is less than about 50°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification