Integrated poration, harvesting and analysis device, and method therefor
First Claim
1. An integrated assembly for treating tissue, comprising:
- (a) a quantity of photosensitizing material;
(b) a carrier which is combined with the photosensitizing material such that the photosensitizing material is dissolved or suspended therein; and
(c) a substrate to which the carrier-photosensitizing material combination is applied including a tissue contacting layer having a target portion and a fluid transporting layer adjacent said tissue contacting layer and aligned with the target portion, said target portion capable of receiving electromagnetic energy and converting it into thermal energy for tissue poration.
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Accused Products
Abstract
An integrated device for poration of biological tissue, harvesting a biological fluid from the tissue, and analysis of the biological fluid. The device comprises a tissue-contacting layer having an electrically or optically heated probe to heat and conduct heat to the tissue to form at least one opening, such as a micropore to collect biological fluid from the opening, and a detecting layer responsive to the biological fluid to provide an indication of a characteristic of the biological fluid, such as the concentration of an analyte in interstitial fluid. In the embodiment in which, the probe comprises a photosensitizing assembly designed for the uniform application of a photosensitizing material, such as, for example, a dye or a pigment, to a tissue, e.g., the stratum comeum. In one embodiment, the photosensitizing assembly comprises photosensitizing material combined with a carrier, such as, for example, an adhesive or an ink, and the resulting combination is applied to a substrate, such as, for example, an inert polymeric substrate to form a photosensitizing assembly. In another embodiment, the photosensitizing assembly comprises photosensitizing material incorporated into a film-forming polymeric material.
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Citations
52 Claims
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1. An integrated assembly for treating tissue, comprising:
- (a) a quantity of photosensitizing material;
(b) a carrier which is combined with the photosensitizing material such that the photosensitizing material is dissolved or suspended therein; and
(c) a substrate to which the carrier-photosensitizing material combination is applied including a tissue contacting layer having a target portion and a fluid transporting layer adjacent said tissue contacting layer and aligned with the target portion, said target portion capable of receiving electromagnetic energy and converting it into thermal energy for tissue poration. - View Dependent Claims (2, 3, 4, 5, 6)
- (a) a quantity of photosensitizing material;
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7. An assembly for porating tissue, comprising:
- (a) a quantity of photosensitizing material, said material capable of converting laser energy into thermal energy; and
(b) a film material containing a substantially uniform suspension of the photosensitizing material comprising a target area for receiving laser energy and porating tissue by heating. - View Dependent Claims (8, 9, 10, 11)
- (a) a quantity of photosensitizing material, said material capable of converting laser energy into thermal energy; and
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12. A method of porating tissue comprising the steps of:
- (a) applying a photosensitizing assembly including a quantity of photosensitizing material to the tissue; and
(b) subjecting said photosensitizing assembly to electromagnetic radiation to cause thermal ablation of the tissue. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- (a) applying a photosensitizing assembly including a quantity of photosensitizing material to the tissue; and
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23. An integrated poration, harvesting and analysis device, for porating tissue, comprising:
- (a) a tissue-contacting layer, a heat generating probe in thermal communication with the surface of the tissue to form at least one opening therein; and
(b) a detecting layer in fluid communication with the at least one opening formed in the surface of the tissue, the detecting layer being responsive to a biological fluid collected from the tissue to provide an indication of a characteristic of the biological fluid. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
- (a) a tissue-contacting layer, a heat generating probe in thermal communication with the surface of the tissue to form at least one opening therein; and
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46. A glucose monitoring system comprising:
- a poration/assay carriage supporting a poration head comprising at least one electrically heated probe, and a assay strip;
a vacuum chamber mechanism for engaging a tissue surface and applying a vacuum in a chamber in which the poration/assay carriage is supported;
means for supplying electrical current to the poration head so as to heat the electrically heated probe to form at least one micropore in the surface of the tissue;
means for moving the poration/assay carriage with respect to the surface of the tissue so as to contact the assay strip with a bolus of biological fluid collected form the surface of the tissue; and
means for interfacing with the assay strip to obtain a measurement of a characteristic of the biological fluid. - View Dependent Claims (47)
- a poration/assay carriage supporting a poration head comprising at least one electrically heated probe, and a assay strip;
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48. A assay cartridge comprising:
- a plurality of assay elements, wherein each assay element comprises;
a heated probe surface suitable for forming micropores when placed in contact with tissue;
a fluid accumulation area adjacent the heated probe surface suitable for accumulating biological fluid on the surface of the tissue; and
an assay area suitable for receiving a bolus of biological fluid from the fluid accumulation area to enable measurement or a characteristic of the biological fluid.
- a plurality of assay elements, wherein each assay element comprises;
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49. A glucose monitoring system comprising:
- a poration/assay carriage supporting a poration head comprising at least one electrically heated probe, and a assay strip;
a vacuum chamber mechanism for engaging a tissue surface and applying a vacuum in chamber in which the poration/assay carriage is supported;
means for supplying electrical current to the poration head so as to heat the electrically heated probe to form at least one micropore in the surface of the tissue;
means for moving the poration/assay carriage with respect to the surface of the tissue so as to contact the assay strip with a bolus of biological fluid collected form the surface of the tissue; and
means for interfacing with the assay strip to obtain a measurement of a characteristic of the biological fluid and further including a plurality as assay elements, wherein each assay element comprises;
a heated probe surface suitable or forming micopores when placed in contact with tissue;
a fluid accumulation area adjacent the heated probe surface suitable for accumulating biological fluid on the surface of the tissue; and
an assay area suitable for receiving a bolus of biological fluid from the fluid accumulation area to enable measurement of a characteristic of the biological fluid and further including means for rotating the cartridge so as to contact each of the assay element during the microporation, harvesting and analysis process.
- a poration/assay carriage supporting a poration head comprising at least one electrically heated probe, and a assay strip;
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50. An integrated poration, harvesting and analysis device, comprising:
- (a) a tissue-contacting layer having a hole therethrough to permit a porator to create at least one opening in the tissue; and
(b) a detecting layer in fluid communication with the at least one opening formed in the surface of the tissue, the detecting layer being responsive to a biological fluid collected from the tissue to provide an indication of a characteristic of the biological fluid.
- (a) a tissue-contacting layer having a hole therethrough to permit a porator to create at least one opening in the tissue; and
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51. An integrated poration, harvesting and analysis device, comprising:
- a) a tissue-contacting layer having a probe thereon suitable for conducting heat to a surface of a tissue to form at least one opening therein; and
(b) a detecting layer in fluid communication with the at least one opening formed in the surface of the tissues, the detecting layer being responsive to a biological fluid collected from the tissue to provide an indication of a characteristic of the biological fluid and wherein surface portions of the tissue-contacting layer are coated with hydrophobic substances.
- a) a tissue-contacting layer having a probe thereon suitable for conducting heat to a surface of a tissue to form at least one opening therein; and
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52. An integrated poration, harvesting and analysis device, comprising:
- (a) a tissue-contacting layer having a probe thereon suitable for conducting heat to a surface of a tissue to form at least one opening therein; and
(b) a detecting layer in fluid communication with the at least one opening formed in the surface of the tissue, the detecting layer being responsive to a biological fluid collected from the tissue to provide an indication of a characteristic of the biological fluid and further comprising a sense electrode coupled to the detecting layer to facilitate determination that the detecting layer is sufficiently wetted with biological fluid.
- (a) a tissue-contacting layer having a probe thereon suitable for conducting heat to a surface of a tissue to form at least one opening therein; and
Specification