Ambulatory device and components thereof
Inventors
DAMIANO, Edward R. • Henderson, David Matthew • Knodel, Bryan Dale • Rosinko, Michael J. • Brown, Justin P. • Ray, Todd S. • Dall, Mads Henrik • Lim, David Chi-Wai
Assignees
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Publication Number
US-11571507-B2
Publication Date
2023-02-07
Expiration Date
Abstract
Certain embodiments provide multi-medicament or single medicament infusion systems for preventing the cross-channeling or improper delivery of medicaments. The system may include one or more of an infusion pump, medicament cartridges, cartridge connectors, a multi-channel fluid conduit, and an infusion set. The medicament cartridges may be sized and shaped differently such that the medicament reservoirs can only be inserted into the pump under selected configurations.
Core Innovation
The ambulatory infusion pump delivers medicaments to a patient and comprises a pump housing with first and second longitudinal medicament cartridge receptacles disposed on opposite sides. An internal area accommodates a power source positioned between the receptacles, along with first and second motors powered by the power source. Each motor drives a respective stacked gear assembly and lead screw to move a corresponding drive nut bidirectionally into its cartridge receptacle.
In single-receptacle and dual-receptacle arrangements, the pump includes a receptacle port featuring a snap-arm extension recess configured to engage a cartridge connector. A first seal provides a water-resistant barrier between the internal area and a medicament cartridge receptacle. The system further incorporates capacitive touch sensing with conductive foam and a metal pad, independent drive monitoring, and keyed cartridge connectors with quarter-turn locking.
Claims Coverage
The patent claims encompass three independent claims defining three primary inventive features directed to dual-receptacle and single-receptacle infusion pump configurations, independent drive mechanisms, connector interfaces, and water-resistant sealing.
Opposed medicament cartridge receptacles with separate drive mechanisms
Claim 1 recites first and second medicament cartridge receptacles extending along opposite sides of the infusion pump housing with a power source situated between them. First and second motors drive respective lead screws through stacked gear assemblies to move longitudinal drive nuts bidirectionally forward or backward into the receptacles.
Cartridge receptacle with a water-resistant seal
An independent claim recites a medicament cartridge receptacle with a motor-driven stacked gear assembly and lead screw moving a drive nut forward or backward, wherein a first seal provides a water-resistant barrier between the internal area of the infusion pump and the cartridge receptacle.
Cartridge port with snap-arm extension recess
Claim 26 recites a first receptacle port configured to receive a cartridge connector, comprising a snap-arm extension recess configured to engage a snap-arm of the connector, with a motor-driven stacked gear assembly and lead screw moving a drive nut into the cartridge receptacle.
The independent claims cover dual- and single-receptacle infusion pump configurations with dedicated motor-driven gear and lead-screw drive assemblies, bidirectional drive nut actuation, cartridge connector snap-arm retention, and water-resistant internal sealing.
Stated Advantages
A seal provides a water-resistant barrier between the infusion pump's internal area and the first medicament cartridge receptacle.
Keyed cartridge connectors, quarter-turn locking, and dual-channel infusion components reduce leakage, lift-off, and medicament mischanneling or cross-channeling.
Documented Applications
An ambulatory infusion pump for delivering medicaments to a patient, including wearable infusion-set configurations.
Dual-receptacle medicament cartridge delivery wherein the first receptacle is configured to receive an insulin cartridge and the second receptacle is configured to receive a glucagon cartridge.
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