# US 11,077,243 B2 · Devices, systems, and methods for estimating active medication from injections > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,243 B2 - Document ID: US11077243B2 - Status: Granted - Kind: B2 - Application number: 16/218,168 - Filed: 2018-12-12 - Published: 2019-06-20 - Granted: 2021-08-03 - Earliest claimed: 2017-12-12 - Assignees: Bigfoot Biomedical, Inc. - Applicants: Bigfoot Biomedical, Inc. - Inventors: John Sjolund; Ambika Srinath; Andrew Bochenko; George Crothall; Bryan Mazlish; Jennifer Martin Block; Sarah Matarese; Linda Mackowiak; Lane Desborough - Web page: https://patentgrep.com/patent/US11077243B2 ## CPC - A61M 5/003: {Kits for diabetics} - A61B 5/0004: {characterised by the type of physiological signal transmitted} - A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement} - A61B 5/4839: {combined with drug delivery} - A61B 5/7405: {using sound} - A61B 5/7435: {Displaying user selection data, e.g. icons in a graphical user interface} - A61B 5/7455: {characterised by tactile indication, e.g. vibration or electrical stimulation} - A61B 5/746: {Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms} - A61M 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)} - A61M 2005/2006: {Having specific accessories} - A61M 2205/3306: Optical measuring means - A61M 2205/3584: using modem, internet or Bluetooth® - A61M 2205/505: Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract One or more embodiments relate, generally, to a reusable accessory for a medication injection pen. Such a reusable accessory may be adapted to be reversibly attached to a medication injection pen, and configured to detect an event associated with an injection of medication from the medication injection pen. It may also be configured to determine a percentage of medication that remains active for injection by the medication injection pen based on timing information and dosing event information. ## Claims ### Claim 1 A reusable accessory for a medication injection pen, the reusable accessory being reversibly attachable to a medication injection pen, the reusable accessory being configured to: detect an event associated with an injection of medication from the medication injection pen; and determine a percentage of medication from the injection of medication that remains active within a user based on a current time and a time of the event associated with the injection of medication. ### Claim 2 (depends on 1) The reusable accessory of claim 1, wherein the reusable accessory comprises a replacement pen cap securable to the medication injection pen such that medication cannot be injected into the user when the replacement pen cap is secured to the medication injection pen, wherein the event associated with the injection of medication is a capping or decapping event that is detected responsive to capping or decapping the medication injection pen with the replacement pen cap. ### Claim 3 (depends on 1) The reusable accessory of claim 1, further comprising a display, wherein the display depicts a visual indicator of the percentage of medication that remains active within the user. ### Claim 4 (depends on 1) The reusable accessory of claim 1, wherein the reusable accessory is configured to determine dose amounts for a plurality of detected events associated with a plurality of injections of medication, wherein the reusable accessory determines an amount of medication from each of the plurality of injections of medication that remains active within the user based on a current time and times of each injection of the plurality of injections. ### Claim 5 (depends on 1) The reusable accessory of claim 1, wherein the reusable accessory is configured to not detect or determine a dose amount for the detected event associated with the injection of medication. ### Claim 6 (depends on 1) The reusable accessory of claim 1, wherein the medication injection pen comprises an insulin injection pen. ### Claim 7 (depends on 1) The reusable accessory of claim 1, wherein the reusable accessory comprises a processor and memory, wherein the memory stores one or more user-specific dosage parameters, wherein the processor is adapted to determine a recommended dose of medication based at least in part on the user-specific dosage parameters and a determination of an amount of medication from one or more prior injections of medication that remains active within the user. ### Claim 8 (depends on 1) The reusable accessory of claim 1, wherein the reusable accessory comprises a wireless communication interface adapted to send or receive wireless communications. ### Claim 9 (depends on 8) The reusable accessory of claim 8, wherein the reusable accessory is configured to receive analyte measurement data from an analyte senor system via the wireless communication interface, wherein the reusable accessory is adapted to determine a recommended dose of medication based at least in part on received analyte measurement data. ### Claim 10 (depends on 8) The reusable accessory of claim 8, wherein the reusable accessory is configured to send data regarding the detected event associated with the injection of medication to a mobile computing device via the wireless communication. ### Claim 11 (depends on 10) The reusable accessory of claim 10, wherein the reusable accessory is configured to receive user-specific dosage parameters from the mobile computing device via the wireless communication. ### Claim 12 (depends on 8) The reusable accessory of claim 8, wherein the wireless communication interface is configured to receive analyte measurement data from an analyte sensor system. ### Claim 13 (depends on 12) The reusable accessory of claim 12, wherein the reusable accessory comprises a recommendation system configured to provide one or more medication dose recommendations responsive to the analyte measurement data. ### Claim 14 (depends on 8) The reusable accessory of claim 8, wherein the wireless communication interface comprises a first wireless connection having a first communication range and a second wireless connection having a second communication range, wherein the first wireless connection is between the reusable accessory and an analyte sensor system, wherein the second wireless connection is between the reusable accessory and a mobile application on a remote computing device, wherein the second communication range is greater than the first communication range. ### Claim 15 (depends on 14) The reusable accessory of claim 14, wherein the wireless communication interface comprises an NFC chip and the first wireless connection consists of NFC communications between the reusable accessory and the analyte sensor system. ### Claim 16 (depends on 8) The reusable accessory of claim 8, wherein the wireless communication interface comprises a wireless radio adapted to permit BLUETOOTH® Low Energy communications between the reusable accessory and one or more mobile computing devices. ### Claim 17 (depends on 12) The reusable accessory of claim 12, wherein the analyte sensor system comprises a flash glucose monitor adapted to provide glucose data via near field communication. ### Claim 18 A method of managing a diabetes therapy, comprising: detecting an event associated with an injection of medication from a medication injection pen responsive to an attaching or detaching of a reusable accessory to the medication injection pen; and determining a percentage of medication from the injection of medication that remains active within a user based on a current time and time of the event associated with the injection of medication.