Patch pump cartridge attachment
Inventors
Michaud, Michael • Lamb, Philip • Fitzgibbons, Michael
Assignees
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Publication Number
US-12661446-B2
Publication Date
2026-06-23
Expiration Date
Abstract
A user-wearable patch pump system for delivery of insulin or other medicament can include a patch pump having a reusable drive unit and a replaceable and refillable cartridge. The cartridge can selectively attach to and be detached from the drive unit. The cartridge can initially be inserted onto the drive unit in a first orientation at an angle to the drive unit and then be rotated to align the cartridge with the drive unit and lock the cartridge in place on the drive unit to form the patch pump.
Core Innovation
The invention relates to a user-wearable infusion pump system that includes a user-wearable infusion pump having a bolus input and no display, together with a retention frame and an adhesive patch to releasably lock the user-wearable infusion pump onto a body of a user. The system further includes a remote control device configured to establish a connection with the user-wearable infusion pump. Medicament delivery is facilitated using infusion tubing extending from the user-wearable infusion pump with a connector at a distal end that attaches to an infusion set having tubing and an infusion site connector that supports delivering medicament to an infusion site remote from the user-wearable infusion pump.
A central feature is that the user-wearable infusion pump comprises a drive unit and a medicament cartridge including a reservoir selectively attachable to the drive unit. The medicament cartridge is configured to be inserted onto the drive unit in a first orientation in which a front surface and a rear surface of the medicament cartridge are in a non-parallel orientation with a front surface and a rear surface of the drive unit. The medicament cartridge is then rotated less than 360 degrees to selectively lock the medicament cartridge onto the drive unit, with the front surface and rear surface of the medicament cartridge being generally parallel to the front surface and rear surface of the drive unit.
The documented content further describes cartridge-to-drive attachment using locking features that promote proper orientation and retention, including a recess, flanges, slots, threads or wedges, detent projections and detent grooves, and sealing by an O-ring. It also emphasizes that the insertion and rotation are characterized by tactile or audible clicking feedback and that the mounting configuration is configured to resist removal by using the locking interaction between the cartridge and the drive unit. The system context includes cartridge-and-drive connectivity that affects compliance at the connection, as well as selectable infusion-site configurations and remote control connectivity.
Claims Coverage
The partial content identifies two independent claims. Across these claims, the inventive coverage centers on a displayless user-wearable pump with remote control and a detachable infusion-set connection, combined with a specific cartridge insertion in a non-parallel orientation followed by rotation less than 360 degrees to lock the cartridge with generally parallel front and rear surfaces on a drive unit.
Displayless user-wearable infusion pump with retention frame and remote control
A user-wearable infusion pump system comprising a user-wearable infusion pump including a bolus input and no display; a retention frame releasably locking the user-wearable infusion pump thereon; an adhesive patch attached to the retention frame to adhere the retention frame to a body of a user; and a remote control device configured to establish a connection with the user-wearable infusion pump.
Remote infusion-site delivery via infusion-set connection and connector refilling
Infusion tubing extending from the user-wearable infusion pump with a connector at a distal end; the connector configured to attach to an end connector of an infusion set having tubing extending to an infusion site connector configured to deliver medicament to an infusion site remote from the user-wearable infusion pump; the connector being in fluid communication with a medicament reservoir of the user-wearable infusion pump to facilitate refilling the reservoir with medicament.
Non-parallel cartridge insertion followed by rotation less than 360 degrees to lock with parallel front and rear surfaces
The user-wearable infusion pump comprises a drive unit and a medicament cartridge including the reservoir selectively attachable to the drive unit; and the medicament cartridge is configured to be inserted onto the drive unit in a first orientation with a front surface and a rear surface of the medicament cartridge in a non-parallel orientation with a front surface and a rear surface of the drive unit and to be rotated less than 360 degrees to selectively lock the medicament cartridge onto the drive unit with the front surface and the rear surface of the medicament cartridge being in a generally parallel orientation with the front surface and the rear surface of the drive unit.
Taken together, the independent claims cover a displayless user-wearable infusion pump system with body-mounting using a retention frame and adhesive patch, remote control connectivity, and remote infusion-site delivery using an infusion-set connector, while also requiring a specific medicament cartridge mounting sequence that inserts in a non-parallel orientation and locks after rotation less than 360 degrees into a generally parallel front/rear surface configuration.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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