Automated blood sampling device
First Claim
1. A system comprising:
- a needle;
an injector, wherein the injector is coupled to the needle, and wherein the injector is configured to drive the needle into the skin to form a puncture in skin and subsequently to retract the needle from the skin;
a suction source, wherein the suction source comprises an evacuated volume; and
a seal, wherein the seal is coupled to the suction source such that the seal receives suction provided by the suction source, wherein the injector is configured to drive the needle through the seal to form at least one hole in the seal when the seal is receiving suction provided by the suction source, and wherein the suction provided by the suction source is sufficient to draw blood from the formed puncture in the skin through the formed at least one hole in the seal.
4 Assignments
0 Petitions
Accused Products
Abstract
Devices are provided to automatically access blood from beneath or within skin. These devices include an injector configured to drive a needle into the skin and subsequently to retract the needle from the skin. These devices additionally include a seal to which suction is applied. To drive the needle into the skin, the needle is first driven through the seal, creating at least one hole in the seal. The suction applied to the seal acts to draw blood from the puncture formed in the skin by the needle, through the at least one hole in the seal, and to a sensor, blood storage element, or other payload. These devices can be wearable and configured to automatically access blood from skin, for example, to access blood from the skin at one or more points in time while a wearer of a device is sleeping.
37 Citations
20 Claims
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1. A system comprising:
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a needle; an injector, wherein the injector is coupled to the needle, and wherein the injector is configured to drive the needle into the skin to form a puncture in skin and subsequently to retract the needle from the skin; a suction source, wherein the suction source comprises an evacuated volume; and a seal, wherein the seal is coupled to the suction source such that the seal receives suction provided by the suction source, wherein the injector is configured to drive the needle through the seal to form at least one hole in the seal when the seal is receiving suction provided by the suction source, and wherein the suction provided by the suction source is sufficient to draw blood from the formed puncture in the skin through the formed at least one hole in the seal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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mounting a system to skin, wherein the system comprises; a needle, a suction source, wherein the suction source comprises an evacuated volume, and a seal, wherein the seal is coupled to the suction source such that the seal receives suction provided by the suction source; and operating the injector to drive the needle into skin to form a puncture in the skin and subsequently to retract the needle from the skin, wherein operating the injector to drive the needle into the skin further comprises driving the needle through the seal to form at least one hole in the seal when the seal is receiving suction provided by the suction source, and wherein the suction provided by the suction source is sufficient to draw blood from the formed puncture in the skin through the formed at least one hole in the seal. - View Dependent Claims (15, 16, 17)
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18. A system comprising:
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a needle, wherein the needle is hollow; an injector, wherein the injector is coupled to the needle, and wherein the injector is configured to drive the needle into skin to form a puncture in the skin; a collection chamber; a suction source, wherein the suction source comprises an evacuated volume, and wherein the suction source is coupled to the needle such that, subsequent to the injector driving the needle into the skin, the suction source provides suction, through the hollow needle, sufficient to draw blood from the formed puncture in the skin, through the hollow needle, into the collection chamber; and a seal, wherein the seal is coupled to the suction source such that the seal receives suction provided by the suction source, and wherein the injector is configured to drive the needle through the seal to form at least one hole in the seal when the seal is receiving suction provided by the suction source. - View Dependent Claims (19, 20)
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Specification