Compact positive displacement pump for wearable drug delivery device

ChangeBridge: Patent Grants - Medical Devices (A61M)

Published April 7th, 2026

Detected April 7th, 2026

Summary

USPTO granted Patent US12594376B2 to Insulet Corporation for a compact positive displacement pump designed for wearable drug delivery devices. The patent covers a reservoir with housing, sealing member, and slit mechanism, combined with a delivery pump featuring a drive mechanism including a piston head and lead screw with blade design. This grant provides intellectual property protection for the company's drug delivery technology through 15 claims.

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What changed

The USPTO granted Patent US12594376B2 to Insulet Corporation covering a compact positive displacement pump for wearable drug delivery devices. The patent discloses a reservoir with a housing defining an interior chamber, a sealing member, and a slit, along with a delivery pump device including a drive mechanism with a piston head and a lead screw coupled to a drive nut with a blade positionable through the slit. The 15 granted claims protect the specific mechanical configuration of the pumping system.

Medical device manufacturers developing wearable drug delivery systems should assess freedom-to-operate implications given this newly issued patent to Insulet Corporation. Competitors in the insulin pump or drug infusion device market may need to evaluate licensing opportunities or design-around options to avoid potential infringement on the granted claims.

What to do next

Monitor for patent landscape implications
Review freedom-to-operate considerations for competing wearable drug delivery devices

Source document (simplified)

← USPTO Patent Grants

Compact positive displacement pump for wearable drug delivery device

Grant US12594376B2 Kind: B2 Apr 07, 2026

Assignee

INSULET CORPORATION

Inventors

Steven Cardinali

Abstract

Embodiments of the present disclosure relate to techniques, processes, devices or systems for pump devices. In one approach, a wearable drug delivery device may include a reservoir configured to store a liquid drug, the reservoir including a housing including an outer wall defining an interior chamber, a sealing member, and a slit through the housing, wherein the sealing member is configured to seal the slit. The wearable drug delivery device may further include a delivery pump device including a drive mechanism coupled to the reservoir for driving the liquid drug out of the reservoir, the drive mechanism including a piston head disposed within the interior chamber of the housing, and a lead screw coupled to a drive nut, wherein the drive nut comprises a blade adjacent the piston head, and wherein the blade is positionable through the slit of the housing.