Automated sequential injection and blood draw

摘要

Devices are provided to automatically inject drugs or other payloads into or beneath skin. These devices include an injector configured to drive a hollow needle into the skin and subsequently to deliver the payload through the hollow needle. Applied suction acts to draw blood from the puncture formed in the skin through the hollow needle, into the device, and to a sensor, blood storage element, or other payload. In some examples, the blood is drawn through the hollow needle when the hollow needle is penetrating the skin. In some examples, these devices are additionally configured to retract the hollow needle from the skin and/or to perform some other functions. These devices can be wearable and configured to automatically access blood or deliver a payload into skin, for example, to operate at one or more points in time while a wearer of a device is sleeping.

主权项

1. A system comprising:
a hollow needle, wherein the hollow needle comprises a channel, and wherein the hollow needle comprises a first end that is configured to penetrate skin; a reservoir, wherein the reservoir contains a payload; an injector, wherein the injector is configured to drive the hollow needle into the skin to form a puncture in the skin, wherein the injector is further configured to deliver the payload from the reservoir into the skin via the channel and to retract the hollow needle from the skin subsequent to driving the hollow needle into the skin; and a suction source configured to provide suction, wherein the suction provided by the suction source is configured to draw blood from the formed puncture in the skin into the system.