Microneedle Device for Transdermal Transport of Fluid
1 Assignment
0 Petitions
Accused Products
Abstract
A device (10) provides for transport of material across or into a biological barrier (2), the device includes a puncturing projection (11c) associated with a first portion of a substrate (1), the first portion of the substrate being movable between a first substrate position in which, in use, the puncturing projection is in puncturing contact with the biological barrier so as to form a flow path for said material across or into said biological barrier and a second substrate position in which, in use, the puncturing projection is at least partially retracted from the first position, wherein the substrate is resiliently deformable or displaceable from the first to the second substrate position by a biasing device associated with the substrate.
-
Citations
65 Claims
-
1-45. -45. (canceled)
- 46. A device for transport of material across or into a biological barrier, the device comprising a puncturing projection associated with a first portion of a substrate, the first portion of the substrate being movable between a first substrate position in which, in use, the puncturing projection is in puncturing contact with the biological barrier so as to form a flow path for said material across or into said biological barrier and a second substrate position in which, in use, the puncturing projection is at least partially retracted from said first position, wherein the substrate is displaceable from the first to the second substrate position by a fluid disposed between said substrate and said biological barrier, wherein, in use, movement of fluid towards or into the region between the first portion of the substrate and the biological barrier from another region between the substrate and the biological barrier urges the substrate into the second substrate position.
-
62. A method of transport of material across or into a biological barrier, the method comprising:
-
(i) providing a device comprising a puncturing projection associated with a first portion of a substrate (ii) providing a fluid (iii) placing the device against the biological barrier (iv) causing the puncturing projection to puncture the biological barrier to form a flow path for the transport of material across or into the biological barrier (v) introducing said fluid between said first substrate portion and said biological barrier (vi) withdrawing the puncturing projection at least partially from the biological barrier without removing the device from the biological barrier wherein the introduction of fluid between the first substrate portion and the biological barrier from another region between the substrate and the biological barrier causes the withdrawal of the puncturing projection from the biological barrier.
-
-
63. A device for transport of material across or into a biological barrier, the device comprising a puncturing projection associated with a first portion of a substrate, the first portion of the substrate being movable between a first substrate position in which, in use, the puncturing projection is in puncturing contact with the biological barrier so as to form a flow path for said material across or into said biological barrier and a second substrate position in which, in use, the puncturing projection is at least partially retracted from said first position, wherein
(i) the substrate is resiliently deformable or (ii) the substrate is displaceable from the first to the second substrate position by a biasing means associated with the substrate.
Specification