# US 10,500,352 B2 · Infusion pump assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,352 B2 - Document ID: US10500352B2 - Status: Granted - Kind: B2 - Application number: 15/269,187 - Filed: 2016-09-19 - Published: 2017-01-12 - Granted: 2019-12-10 - Earliest claimed: 2001-05-18 - Assignees: DEKA Products Limited Partnership - Applicants: DEKA Products Limited Partnership - Inventors: Kevin L. Grant; Brian L. Tracey; Marc Aurele Mandro; Robert John Bryant, Jr. - Web page: https://patentgrep.com/patent/US10500352B2 ## CPC - A61M 5/5086: {for indicating if defective, used, tampered with or unsterile} - A61M 5/14244: {adapted to be carried by the patient, e.g. portable on the body} - A61M 5/145: using pressurised reservoirs, e.g. by means of pistons - A61M 5/1452: {pressurised by means of pistons} - A61M 5/1456: {with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir} - A61M 5/14586: {pressurised by means of a flexible diaphragm} - A61M 5/1723: {using feedback of body parameters, e.g. blood sugar or pressure} - A61M 5/14: Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor - A61M 5/142: Pressure infusion, e.g. using pumps - A61M 25/0612: {Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders} - A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)} - A61M 39/14: for connecting tubes having sealed ends {(needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26)} - A61M 2005/14268: {with a reusable and a disposable component} - A61M 2005/14506: {mechanically driven, e.g. spring or clockwork} - A61M 2005/14573: {with a replaceable reservoir for quick connection/disconnection with a driving system} - A61M 2205/3306: Optical measuring means - A61M 2205/332: Force measuring means - A61M 2205/50: with microprocessors or computers - A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient - A61M 2205/581: by audible feedback - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - A61M 2205/8206: battery-operated - A61M 2230/201: Glucose concentration - Y10T 29/494: Fluidic or fluid actuated device making - Y10T 29/49826: Assembling or joining - 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)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw. ## Claims ### Claim 1 An infusion pump device for delivering infusible fluid to a user, the device comprising: a reusable pump portion comprising a motor assembly; a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising a rubber septum and a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the rubber septum; processing logic for executing one or more processes in the reusable pump portion; and a battery assembly configured to power the infusion pump device, wherein the processing logic is configured to: compare an actual voltage level of the battery assembly to a minimum voltage requirement to determine if the actual voltage level meets the minimum voltage requirement; and if the actual voltage level does not meet the minimum voltage requirement, initiating an alarm sequence on the infusion pump device; wherein the disposable portion further comprises a plunger rod, the plunger rod connected to a plunger and extending away from the plunger to a distal end, the plunger rod having a threaded portion, wherein when the disposable portion is attached to the reusable pump portion the plunger rod is engaged with the motor assembly, wherein the plunger rod is displaceable by the motor assembly, wherein the processing logic is configured to monitor a displacement of the plunger rod to determine if the plunger rod was displaced an expected displacement in response to displacement by the motor assembly, and wherein if the plunger rod was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device. ### Claim 2 (depends on 1) The device in claim 1 wherein the motor assembly comprises a nut assembly. ### Claim 3 (depends on 1) The device of claim 1 wherein the reusable pump portion is configured to receive the disposable portion. ### Claim 4 (depends on 1) The device of claim 1 wherein the plunger comprises at least one seal. ### Claim 5 An infusion pump device for delivering infusible fluid to a user, the device comprising: a reusable pump portion comprising a motor assembly; and a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising a plunger displaceable by the motor assembly, a rubber septum, and a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the rubber septum; and processing logic for executing one or more processes in the reusable pump portion, wherein the processing logic is configured to monitor a displacement of the plunger to determine if the plunger was displaced an expected displacement in response to displacement by the motor assembly, wherein and if the plunger was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device. ### Claim 6 (depends on 5) The device of claim 5 wherein the plunger further comprises at least one seal. ### Claim 7 An infusion pump device for delivering infusible fluid to a user, the device comprising: a pump portion comprising a motor assembly wherein the motor assembly comprising a nut assembly; a reservoir in removable relation to the pump portion, the reservoir comprising: a plunger having a plunger rod with a threaded portion extending over an entire length of the plunger rod from the plunger to a distal end of the plunger rod; a rubber septum; and a needle, wherein when the reservoir is attached to the pump portion, the needle pierces the rubber septum; and processing logic for executing one or more processes in the pump portion, wherein the plunger rod is displaceable by the nut assembly, wherein the pump portion is durable and the reservoir is disposable, wherein the processing logic is configured to monitor a displacement of the plunger to determine if the plunger was displaced an expected displacement in response to displacement by the motor assembly, and wherein and if the plunger was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device. ### Claim 8 (depends on 7) The device of claim 7 wherein the plunger comprises at least one seal. ### Claim 9 (depends on 7) The device of claim 7 further comprising a battery assembly configured to power the infusion pump device, wherein the processing logic is configured to: compare an actual voltage level of the battery assembly to a minimum voltage requirement to determine if the actual voltage level meets the minimum voltage requirement; and if the actual voltage level does not meet the minimum voltage requirement, initiating an alarm sequence on the infusion pump device.