Electroporation microneedle and methods for its use
First Claim
Patent Images
1. An electroporation apparatus comprising:
- a base;
an elongate shaft having an axis, a distal end, a proximal end attached to the base, and a lumen extending from a proximal location to an opening at a distal location on the shaft, the distal end of the elongate shaft adapted to penetrate tissue;
a first electrode structure disposed on the shaft near the distal location; and
a second electrode structure disposed on the base and spaced-apart axially from the first electrode structure to establish an electric field between the first electrode structure and the second electrode structure, wherein the shaft has an outer diameter in the range from 10 μ
m to 1 mm and a length in the range from 0.1 mm to 10 mm.
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Accused Products
Abstract
Electroporation of cells in target tissues is performed using microneedles having integral electrode structures. In a first embodiment, a pair of electrode structures are disposed on opposite sides of a substance delivery opening on a needle or other tissue-penetrating shaft. In a second embodiment, a first electrode structure is disposed on the needle and a second electrode structure is disposed on an attached base. The electrode structures are spaced closely together and relatively low voltages are applied to achieve electroporation-enhanced substance delivery.
57 Citations
7 Claims
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1. An electroporation apparatus comprising:
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a base; an elongate shaft having an axis, a distal end, a proximal end attached to the base, and a lumen extending from a proximal location to an opening at a distal location on the shaft, the distal end of the elongate shaft adapted to penetrate tissue; a first electrode structure disposed on the shaft near the distal location; and a second electrode structure disposed on the base and spaced-apart axially from the first electrode structure to establish an electric field between the first electrode structure and the second electrode structure, wherein the shaft has an outer diameter in the range from 10 μ
m to 1 mm and a length in the range from 0.1 mm to 10 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification