Animas Corporation Patent applications |
Patent application number | Title | Published |
20150100038 | METHOD AND SYSTEM FOR CONTROLLING A TUNING FACTOR DUE TO SENSOR REPLACEMENT FOR CLOSED-LOOP CONTROLLER IN AN ARTIFICIAL PANCREAS - Described and illustrated is a system for management of diabetes that includes an infusion pump, glucose sensor and controller with a method programmed in the controller. The infusion pump is configured to deliver insulin. The glucose sensor senses glucose levels in the subject and provide output signals representative of the glucose levels in the subject. The controller is programmed receives signals from at least one of the glucose sensor and the pump and configured to issue signals to the pump to deliver an amount of insulin determined by a feedback controller that utilizes a model predictive control based on desired glucose levels, insulin amount delivered and measured glucose levels of the subject. The controller is also configured to deliver insulin using a tuning factor (R) for a model predictive controller in the microcontroller as a conservative setting otherwise the system maintains a current tuning factor (R) for the controller. | 04-09-2015 |
20140378939 | VENTED FLUID CARTRIDGE FOR MEDICAL INFUSION DEVICE - The invention is generally directed toward a novel fluid cartridge for medical infusion devices. The disclosed invention describes a medicament cartridge having an internal vent structure and hydrophobic venting material to permit the equilibration of pressure between an infusion device's reservoir chamber and the external environment, without the need for a costly, difficult to maintain vent located in the housing of the infusion device. | 12-25-2014 |
20140378903 | MANUALLY ACTUATED INFUSION DEVICE AND DOSE COUNTER - An infusion device for delivering discrete boluses of medication to a patient, using a mechanically actuated piston. The infusion pump employs a near-field communication system to convey the occurrence of an actuation, the amount of medicament remaining in the pump, and other information to a nearby near-field receiver device. The disclosed drive system and nearer-field communications system provides an infusion device capable of accurately delivering medication and providing a means for tracking and logging data while eliminating the need for a power source within the device, thereby minimizing weight and size. | 12-25-2014 |
20140276555 | Method and System for Closed-Loop Control of an Artificial Pancreas - A local extremum of a function ƒ is determined by computing a Jacobian of ƒ at a test point x by adding an imaginary part to x and a Hessian of ƒ by adding two imaginary parts to a multicomplex copy of x and extracting a third imaginary part. Solving a system of equations defined by the Jacobian and Hessian yields a delta; the process is repeated until convergence. This method is used in each of a series of time intervals to compute an insulin-delivery amount for an insulin pump. ƒ is a model-predictive-control cost function; x is a set of successive candidate insulin delivery amounts beginning from a selected time interval. A system includes a glucose monitor and a controller using glucose measurement data therefrom to determine an insulin delivery amount for a time interval by minimizing ƒ; an insulin pump provides insulin corresponding to the delivery amount. | 09-18-2014 |
20140276554 | METHOD AND SYSTEM FOR CLOSED-LOOP CONTROL OF AN ARTIFICIAL PANCREAS - Methods and systems for controlling an insulin pump in response to glucose measurements are responsive to a base insulin delivery profile and a temporary insulin delivery profile. These can be used, e.g., to control blood glucose level of a subject using a continuous glucose monitor and an insulin infusion pump. During a selected time range, an insulin amount for the pump to supply is determined using the temporary insulin delivery profile. Outside that time range, the insulin amount is determined using the base insulin delivery profile. The temporary insulin delivery profile can specify an exact amount to be supplied (a “hard” profile), a nominal amount to be supplied if doing so does not drive glucose out of a desired zone (“soft”), or a soft profile with a minimum amount of insulin to be delivered (“semi-soft”). | 09-18-2014 |
20140180240 | METHOD AND SYSTEM FOR A HYBRID CONTROL-TO-TARGET AND CONTROL-TO-RANGE MODEL PREDICTIVE CONTROL OF AN ARTIFICIAL PANCREAS - Described and illustrated is a system for management of diabetes that includes an infusion pump, glucose sensor and controller with a method programmed into the controller. The infusion pump is configured to deliver insulin to a subject. The glucose sensor is configured to sense glucose levels in the subject and provide output signals representative of the glucose levels in the subject. The controller is programmed to switchover from one mode of MPC control based on a predetermined range of blood glucose values to another MPC mode based on a predetermined target. | 06-26-2014 |
20140171867 | PRIMING METHOD FOR INFUSION DEVICE - Described is drug infusion device and lineset for delivering medication. The novel pump and lineset described herein eliminate the ability of the pump and lineset from being primed when the cartridge reservoir is in fluid communication with the drug-delivering cannula, through which medication is delivered, is inserted into the skin of a patient. The system and method of the invention include a lineset having a plurality of electrical leads for allowing electrical communication between the infusion pump and the infusion set and for allowing the pump to determine whether the lineset is connected to the infusion set when a priming operation is initiated. | 06-19-2014 |
20140163521 | MEDICAL INFUSION PUMP MECHANISM - A medical device pump with a housing with a compartment for removably receiving a cartridge containing a therapeutic agent, a conduit configured to operatively provide a fluid flow path for therapeutic agent to exit from the cartridge, a user activated delivery button, a trigger mechanism, and a pump mechanism employing an articulating, coiled drive spring. | 06-12-2014 |
20140163517 | METHOD AND SYSTEM FOR TUNING A CLOSED-LOOP CONTROLLER FOR AN ARTIFICIAL PANCREAS - Described and illustrated is a system for management of diabetes that includes an infusion pump, glucose sensor and controller with a method programmed into the controller. The infusion pump is configured to deliver insulin to a subject. The glucose sensor is configured to sense glucose levels in the subject and provide output signals representative of the glucose levels in the subject. The controller is programmed receives signals from at least one of the glucose sensor and the pump and configured to issue signals to the pump to deliver an amount of insulin determined by a feedback controller that utilizes a model predictive control of the subject based on desired glucose levels, insulin amount delivered and measured glucose levels of the subject. The controller is also configured to deliver insulin using a tuning factor based on either one of an omission index module or a calibration index module. | 06-12-2014 |
20140113553 | METHODS FOR SECURE COMMUNICATION AND PAIRING OF A MEDICAL INFUSION DEVICE AND A REMOTE CONTROLLER FOR SUCH MEDICAL DEVICE - A disease management system, methods, and devices are shown and described. In one embodiment, the system includes an infusion pump and a remote controller with the ability to be paired to each other and to confirm the authenticity of instructions sent to the infusion device from the remote controller. A method to verify a wireless connection between an infusion pump and a remote controller is shown and described herein. In addition, a method of operating a diabetes management system is provided in which the system includes an infusion pump and at least a remote controller. | 04-24-2014 |
20140094754 | TELESCOPING PISTON DRIVE FOR MEDICAL INFUSION DEVICE - Described is a drive mechanism for a drug infusion pump. In one embodiment, an in-line drive mechanism is provided that includes a motor operatively coupled to a lead screw, which is configured to engage a piston. The piston includes a cavity to receive the motor and the lead screw such that the lead screw and at least a portion of the motor are substantially contained within the piston cavity when the piston is in a retracted position. In one embodiment, the motor rotates a drive shaft is configured to turn a mechanism comprising a piston, a lead screw, and a housing that cooperate to extend telescopically to drive a plunger into a medicament cartridge, thereby expelling fluid. | 04-03-2014 |
20140088507 | ARTICULATING POWER SUPPLY FOR MEDICAL INFUSION DEVICE - Described is a drive mechanism for a drug infusion pump. In one embodiment, an in-line drive mechanism is provided that includes a motor operatively coupled to a lead screw, which is configured to engage a piston. The piston includes a cavity to receive the motor and the lead screw such that the lead screw and at least a portion of the motor are substantially contained within the piston cavity when the piston is in a retracted position. In one embodiment, at least a portion of the motor is also substantially contained within a cavity of the lead screw regardless of whether the piston is in the retracted or extended position. The configuration of the piston, the lead screw and the motor results in a more compact drug delivery device. | 03-27-2014 |
20140005633 | METHOD AND SYSTEM TO HANDLE MANUAL BOLUSES OR MEAL EVENTS FOR CLOSED-LOOP CONTROLLERS | 01-02-2014 |
20130137952 | METHOD AND SYSTEM TO DISPLAY ANALYTE SENSOR DATA - Described and illustrated herein are an exemplary methods and system to display analyte sensor data. Such method may be achieved by the medical device receiving data from the analyte sensor for a period of time and displaying a target zone and a graphical representation of the data in which one or more portions of the graphical representation comprises a specific indicia of clinical risk. | 05-30-2013 |
20130090605 | TUNABLE MECHANICAL INJECTION DEVICE FOR MEDICATION - Described is drug infusion device. The device is intended to permit the delivery of medication over an extended period of time. | 04-11-2013 |
20130085470 | METHOD FOR PRESSURE-INDEPENDENT, REFILLABLE DRUG INFUSION DEVICE - Described is drug infusion device with one or more check valves for inhibiting the unintentional discharge of medication from a cartridge. The device includes a chamber capable of receiving a cartridge of medication in a fluid form and one or more novel check valves for ensuring the drug is not unintentionally released due to pressure differentials between the cartridge and the ambient pressure outside of the drug infusion device. | 04-04-2013 |
20130085449 | INSERTION DEVICE FOR A MEDICAL CONDUIT - The invention provides an insertion device for insertion of conduits into a body that, before and following deployment of the conduit into the body, has no components that require insertion into or removal from the device. Additionally, the device includes a component that not only prevents re-use or reopening of the device once it is activated, but also provides feedback to the user in the form of a resistance force to activation that must be overcome by the user to deploy the conduit. | 04-04-2013 |
20130076518 | WATER RESISTANT DRUG INFUSION HOUSING WITH PRESSURE DIFFERENTIAL SENSOR - Described is drug infusion device with one or more vents that permit the passage of gas between the exterior and interior of the device's housing. In one embodiment the device may include multiple interior chambers of differing volume and pressure sensors placed between them, while vents to ambient pressure are included in each chamber. According to this exemplary structure, the readings from the pressure sensor may be used to determine malfunctions in the venting of the device and/or changes in pressure that could cause the unintended delivery of medication. | 03-28-2013 |
20110178499 | METHODS TO PAIR A MEDICAL DEVICE AND AT LEAST A REMOTE CONTROLLER FOR SUCH MEDICAL DEVICE - A disease management system, methods, and devices are shown and described. In one embodiment, the system includes an infusion pump and a remote controller with the ability to be paired to each other. A method to verify a wireless connection between an infusion pump and a remote controller is shown and described herein. In a further embodiment, a method to verify a wireless connection between an infusion pump and a remote controller is provided. In addition, a method of operating a diabetes management system is provided in which the system includes an infusion pump and at least a remote controller. | 07-21-2011 |
20100255366 | Insulin Cartridge Cap - Described is a cartridge cap with a feature that aides in the removal of a battery cap from a drug infusion pump. The proximal end of the cartridge cap includes a recess on an inner surface that receives a tab on a distal end of the battery cap. To remove the battery cap from the drug infusion pump, the proximal end of the cartridge cap is placed over the distal end of the battery cap such that the recess in the cartridge cap receives the tab on the battery cap. The cartridge cap is then rotated counterclockwise until the battery cap is removed from the drug infusion pump. | 10-07-2010 |
20100249706 | Novel Drive System for use with an Insulin Delivery Device - The invention relates to a mechanical drive system for a medical infusion device. The disclosed drive system employs a flexible tape with recesses or holes that are configured to mate with tabs or protrusions on a gear to advance the rotation of the gear at a rate determined by the pattern of recesses or holes on the flexible tape. | 09-30-2010 |
20100082009 | Spring-Loaded Cartridge Cap - Described is a spring-loaded cartridge cap for use in a drug infusion pump. The cap is ejected if it is not properly inserted into the pump. In one embodiment, the cap includes three detent pins that mate with detents in a cartridge chamber within the drug infusion pump. As the cap is inserted into the cartridge chamber of the drug infusion pump, the distal end of the cartridge compresses a coil spring within the cap. To secure the cap within the cartridge chamber, the cap is rotated such that each detent pin moves within a slot until a locking detent is engaged. | 04-01-2010 |
20100081993 | Medical Device Mechanical Pump - A medical device pump with a housing with a compartment for removably receiving a cartridge containing a therapeutic agent, a conduit configured to operatively provide a fluid flow path for therapeutic agent to exit from the cartridge, a user activated delivery button, a trigger mechanism, and a mechanical pump mechanism. The trigger mechanism, user activated delivery button and mechanical pump mechanism of the medical device pump are configured such that the trigger mechanism is activated by a user fully activating the user activated delivery button. Moreover, such full activation generates mechanical power employed by, and sufficient for, the mechanical pump mechanism to pump a predetermined volume of therapeutic agent from the cartridge and through the fluid flow path. | 04-01-2010 |
20100079360 | Medical Devices Using Bistable Displays - The invention relates to a novel display system for a drug delivery device that reduces power consumption and permits the user of the device to see messages when the device is not in a powered state or when the device has encountered an error condition. By using a bistable display, the medical device is able to maintain messages that can been seen by the user even when the device's power supply is exhausted or when the device has encountered an error that interrupts its normal operation. The use of such a display also improves the battery life by eliminating the need to provide power to the display screen when it is not being updated. | 04-01-2010 |
20090326722 | Method and System for Using Status Indicators in Wireless Communication with Medical Devices - The invention, in general, relates to communications systems for medical devices. In particular, the present invention is directed toward a communications routine for a medical infusion devices and a remote control unit that includes data elements within the transmissions that indicate the operating status of the infusion device. | 12-31-2009 |
20090326459 | Drive Mechanism and Method of Use - Described is a drive mechanism for a drug infusion pump. In one embodiment, an in-line drive mechanism is provided that includes a motor operatively coupled to a lead screw, which is configured to engage a piston. The piston includes a cavity to receive the motor and the lead screw such that the lead screw and at least a portion of the motor are substantially contained within the piston cavity when the piston is in a retracted position. In one embodiment, at least a portion of the motor is also substantially contained within a cavity of the lead screw regardless of whether the piston is in the retracted or extended position. The configuration of the piston, the lead screw and the motor results in a more compact drug delivery device. | 12-31-2009 |
20090326457 | Volumetric Micropump - The invention relates to a drug infusion device which may include a remote control unit and/or remote control unit capable of sampling and analyzing blood and interstitial bodily fluids. More particularly, the invention also describes a mechanism for delivering a fluid medication from a reservoir to a patient using a flexible reservoir and a stepped piston pump. | 12-31-2009 |
20090243234 | Over-Molded Seal - Described is a seal used in a drug delivery device. In one embodiment, a seal is provided that includes a tongue, a groove and a coating formed on at least one surface of the tongue, the groove or both the tongue and the groove. In another embodiment, a drug delivery device is provided that includes a housing having a top portion and a bottom portion, a tongue formed on the periphery of one of the top portion or bottom portion and a groove formed on the periphery of one of the top portion or bottom portion and configured to receive the tongue, and a coating on the surface of at least one of the groove and the tongue that creates a hermetic seal between the top portion and the bottom portion when the tongue and the groove are in contact. | 10-01-2009 |
20090112169 | Medical Device Flexible Conduit and Method of Manufacture - A medical device flexible conduit includes an elongated Nitinol strip with a distal end, a proximal end, a longitudinal axis running from the distal end to the proximal end, a sharp head extending from the distal end, and a channel etched therein. Moreover, the channel is dispositioned along the longitudinal axis. The medical device flexible conduit also includes a flexible tube at least partially jacketing the elongated Nitinol strip between the distal end and the proximal end with the channel and the flexible tube defining a conduit. A method for manufacturing a medical device flexible conduit includes etching a channel into an elongated Nitinol strip and forming a sharp head on a distal end of the elongated Nitinol strip. The method also includes subsequently jacketing the flat elongated Nitinol strip with a flexible tube such that the flexible tube and channel define a conduit. | 04-30-2009 |
20090112162 | Drug Delivery System with Cartridge Interlock - Described is a drug delivery system and method for priming such drug delivery system so that unwanted delivery of a drug is prevented. In one embodiment, a drug delivery system is provided that includes a drug infusion pump and a cartridge configured for insertion into the drug infusion pump. The cartridge includes a hollow barrel for receiving and storing a drug and a plunger having a first end and a second end. The first end of the plunger is slidably insertable and movable within the barrel. The second end of the plunger is slidably insertable and movable with a chamber of the drug infusion pump. The second end of the plunger also includes an interlock that is passively engaged by a piston within the drug infusion pump during priming to prevent unwanted delivery of the drug. | 04-30-2009 |
20090112154 | User Interface for Insulin Infusion Device - The invention relates to a device and method for treating diabetic patients on insulin therapy. More specifically, the invention includes apparatus for infusing insulin into a patient in an amount determined by the patient's carbohydrate intake, blood glucose level, and the amount of insulin calculated to be present in the patient at the time the therapy is to be administered. In one embodiment, an insulin infusion device having an on-board processor obtains a patient's blood glucose value from a remote sensor and receives input from a user indicating their recent meal intake. The device may include an on-board food database for determining the carbohydrate content of the patient's recent meals and compare that with recent insulin deliveries into the patient to determine the insulin present in the patient prior to determining an appropriate insulin dosage. | 04-30-2009 |
20090105646 | Multi-Frequency Communication System For A Drug Infusion Device - Disclosed is a medical infusion device, such as an externally worn insulin pump, capable of being in remote communication with a controller or data acquisition unit such as a blood glucose meter. The disclosed medical infusion device includes a dual frequency antenna to facilitate communication with the remote device and the antenna is mounted using a spring-design that inhibits transmission of vibration to the antenna. | 04-23-2009 |
20090099525 | Drug Delivery System with Breakaway Plunger Extractor - Described is a drug delivery system and method for inserting a cartridge into a chamber in a drug infusion device to inhibit refilling or reuse of a cartridge. In one embodiment, a drug delivery system is provided that includes a chamber and a cartridge configured for insertion into the chamber. The cartridge includes a hollow barrel for receiving and storing a drug, a plunger having a distal end and a proximal end, where the distal end of the plunger is slidably insertable and movable within the barrel. A breakaway extractor is disposed external to the barrel and is removably attached to the proximal end of the plunger. After insertion of the cartridge into the barrel, the breakaway extractor may be detached from the cartridge, to inhibit the retraction of the plunger from within the barrel of the cartridge and refilling of the cartridge. | 04-16-2009 |
20090099505 | Data Transmission System For A Drug Infusion Device - Disclosed is a medical infusion device, such as an externally worn insulin pump, capable of being in remote communication with a controller or data acquisition unit such as a blood glucose meter. The disclosed medical infusion device includes a dual frequency antenna to facilitate communication with the remote device and the antenna is mounted using a spring-design that inhibits transmission of vibration to the antenna. | 04-16-2009 |
20090005729 | MEDICAL INFUSION PUMPS - Disclosed is a medical infusion device including a dedicated processing unit for detecting abnormal operation of the operation of the device. Specifically, a watchdog controller is employed as an independent monitor of the functioning of microprocessors used in the medical infusion device for controlling things such as RF communication, insulin infusion, and system integrity. Through the use of an independently-powered watchdog control system, the accuracy and reliability of the device is enhanced, resulting in greater assurance to the patient receiving periodic or continuous infusion of a drug. | 01-01-2009 |
20080312585 | METHOD OF OPERATING A MEDICAL DEVICE AND AT LEAST A REMOTE CONTROLLER FOR SUCH MEDICAL DEVICE - A disease management system, methods, and devices are shown and described. In one embodiment, the system includes an infusion pump and a remote controller with the ability to be paired to each other. A method to verify a wireless connection between an infusion pump and a remote controller is shown and described herein. In a further embodiment, a method to verify a wireless connection between an infusion pump and a remote controller is provided. In addition, a method of operating a diabetes management system is provided in which the system includes an infusion pump and at least a remote controller. | 12-18-2008 |
20080312584 | SYSTEMS AND METHODS TO PAIR A MEDICAL DEVICE AND A REMOTE CONTROLLER FOR SUCH MEDICAL DEVICE - A disease management system, methods, and devices are shown and described. In one embodiment, the system includes an infusion pump and a remote controller with the ability to be paired to each other. A method to verify a wireless connection between an infusion pump and a remote controller is shown and described herein. In a further embodiment, a method to verify a wireless connection between an infusion pump and a remote controller is provided. In addition, a method of operating a diabetes management system is provided in which the system includes an infusion pump and at least a remote controller. | 12-18-2008 |
20080312512 | METHODS TO PAIR A MEDICAL DEVICE AND AT LEAST A REMOTE CONTROLLER FOR SUCH MEDICAL DEVICE - A disease management system, methods, and devices are shown and described. In one embodiment, the system includes an infusion pump and a remote controller with the ability to be paired to each other. A method to verify a wireless connection between an infusion pump and a remote controller is shown and described herein. In a further embodiment, a method to verify a wireless connection between an infusion pump and a remote controller is provided. In addition, a method of operating a diabetes management system is provided in which the system includes an infusion pump and at least a remote controller. | 12-18-2008 |
20080269673 | Cellular-Enabled Medical Monitoring and Infusion System - Described is a medical infusion device that is configured to send and receive data on a real-time basis through the use of circuitry that enables the connection of the device to a cellular network. In one embodiment, a medical infusion device is provided that includes a housing having a drug reservoir, a first processing system and a drive mechanism adapted to receive and execute instructions from the first processing system. The drive mechanism is in mechanical cooperation with the drug reservoir for controlling expulsion of the drug from the reservoir. Medical infusion device also includes an input device for receiving external instructions and configured to transmit the external instructions to the first processing system, a display for receiving and displaying information from the first processing system, and a second processing system in communication with the first processing system for controlling communication between the first processing system and a remote processing system via a cellular network. | 10-30-2008 |