Infusion pump methods, systems and apparatus
Inventors
Kamen, Dean • Mandro, Marc A. • Durand, Kevin A. • Lanier, JR., Gregory R. • Grant, Kevin L. • Gray, Larry B. • Tracey, Brian D.
Assignees
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Publication Number
US-8728024-B2
Publication Date
2014-05-20
Expiration Date
Abstract
A system for priming an infusion pump is disclosed. The system includes a priming cap including a septum and configured to matably connect with a male part comprising a needle and attached to a length of tubing for fluid, wherein when matably connected with the male part, the priming cap occludes the tubing.
Core Innovation
The document describes an infusion pump occlusion-detection scheme using force sensor readings during dose dispensing. It computes an initial force reading and a final force reading, derives rate-of-change force readings from the difference, stores historical values in a FIFO buffer, and compares an average rate-of-change force reading to a threshold to trigger an occlusion alarm. The scheme includes a user sensitivity setting that changes measurement granularity and handling for non-identical dose volumes, including normalization of rate-of-change for non-identical or bolus dose volumes.
The document also describes a priming/over-delivery prevention concept that detects whether male and female cannula/coupler parts are connected and prevents prime when they are connected. Connection is confirmed using electrical contacts and may include an antenna/RFID, pressure sensing, or other detection. When the male part and female part are connected, alarming and lockout of priming, rewind, and reservoir-cap changes are provided, and when not connected, priming is allowed.
A priming cap with a septum is described that mates with a male needle and tubing part and occludes the tubing during priming. The disclosure further describes multiple ways for the pump to detect whether the male and female parts are connected, including electrical contacts and RFID chip information via a wireless antenna, together with occlusion-alarm check methods and other connector-related safety features.
Claims Coverage
The partial content explicitly provides one independent claim directed to a priming-prevention method. The inventive features focus on receiving a priming instruction, confirming male/female connection, alarming the user, and preventing prime when connected, while allowing prime when not connected.
Preventing prime based on detecting male part and female part connection
A pump processor receives instruction to prime, confirms whether the male part and female part are connected, alarms the user and prevents prime where the male part and female part are connected, and allows prime where the male part and female part are not connected.
The claim coverage centers on using the pump processor to confirm whether male and female parts are connected in response to a priming instruction, then alarming and preventing prime when connected and allowing prime when not connected, with dependent claims refining the alarm modality and remote alarm delivery.
Stated Advantages
Prevents prime when the male part and female part are connected.
Allows prime when the male part and female part are not connected.
Alarms the user when the male part and female part are connected.
Prevents prime where a user is connected to an infusion pump by alarming the user and preventing prime when the male part and female part are connected.
Documented Applications
Infusion pump priming/over-delivery safety, including priming cap use with septum occluding tubing during priming and preventing prime when male and female parts are connected.
Occlusion-alarm check using the priming cap.
Remote alarm delivery using a remote control in connection with priming prevention and alarming.
Infusion pump priming where a user is connected to an infusion pump, with prevention of prime based on confirming male part and female part connection.
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