US 12,697,434 B2 · Device for subcutaneous delivery of fluid medicament

Abstract

An improved device delivers a fluid medicament to the subcutaneous tissue of a user. The device is better suited for patients with Parkinson's Disease and other central nervous system disorders, than conventional infusion devices. The device can include a reusable part including a drive component (e.g., motor) and control electronics and a disposable part including a medicament reservoir. Medicament can be evacuated from the medicament reservoir by a plunger assembly that includes a plunger attached to a lead screw that is rotated by a nut, all within the disposable part. The device can be fluidically coupled with the tissue via a flexible cannula. Various embodiments relate to an improved cannula insertion mechanism that delivers the cannula under a force applied by a spring. Various embodiments relate to improved filling of the device, for example, using a vial adapter and an automated filling station.

Claims19

Dependent claims

A device for delivering a fluid medicament into or through the skin of a user, the device comprising:

a reusable part comprising:
a drive component;
and
a control unit for controlling the drive component;
and
a disposable part engageable with the reusable part, the disposable part comprising:
a first reservoir for containing the fluid medicament, wherein the first reservoir comprises a first bushing;
a first plunger head, the first plunger head moveable in the first reservoir by a first lead screw;
and
a first nut concentrically secured by and rotatable in the first bushing, the first nut threadedly engaged with a thread of the first lead screw, wherein the first bushing comprises a first compliant portion that permits the first nut a degree of lateral freedom of movement, and wherein the first nut is configured to be detachably coupled with and rotatable by the drive component upon engaging the reusable part with the disposable part and while the reusable part is engaged with the disposable part, and wherein the first nut is configured, upon rotation of the first nut in the first bushing, to linearly displace the first lead screw in a direction dependent on a rotation direction of the first nut.

7 more elements

A disposable part for containing fluid medicament for delivery by a fluid medicament delivery device into or through the skin of a user, the disposable part comprising:

a first reservoir for containing the fluid medicament;
a first plunger head, the first plunger head moveable in the first reservoir by a first lead screw;
a first bushing disposed in the first reservoir;
and
a first nut concentrically secured by and rotatable in the first bushing, wherein the first bushing comprises a first compliant portion that permits the first nut a degree of lateral freedom of movement, the first nut threadedly engaged with the first lead screw to linearly displace the first lead screw in the first reservoir in a direction dependent on a rotation direction of the first nut in the first bushing.

2 more elements

Dependencies are inferred from the claim text.

Device for subcutaneous delivery of fluid medicament

Life of this patent

Device for subcutaneous delivery of fluid medicament

Life of this patent

Abstract

Claims19