US 11,992,662 B2 · Systems and methods for automatically ejecting a dose cassette of an autoinjector

Abstract

An autoinjection housing device includes a housing for receiving a dose cassette, a base latch configured to hold the dose cassette within the housing, and a back plate operably connected to a spring. The back plate is configured to move proximally within the housing upon receipt of the dose cassette into the housing, and the proximal movement of the back plate compresses the spring. The autoinjection housing device further includes an actuator operably connected to the base latch. The actuator is configured to move the base latch and the dose cassette proximally within the housing after the dose cassette is secured in the housing. The base latch is configured to move radially outwards upon said proximal movement of the base latch within the housing. The radial movement of the base latch is configured to cause the dose cassette to become unsecured within the housing. In response to the dose cassette becoming unsecured, the spring decompresses, causing the back plate to move distally and push the dose cassette out of a distal end of the housing.

Claims20

Dependent claims

An autoinjector housing device comprising:

a housing for receiving a dose cassette;
a base latch configured to hold the dose cassette within the housing;
a back plate operably connected to a spring, wherein the back plate is configured to move proximally within the housing upon receipt of the dose cassette into the housing, and further wherein the proximal movement of the back plate compresses the spring;
and
an actuator operably connected to the base latch,
wherein:
the actuator is configured to move the base latch and the dose cassette proximally within the housing after the dose cassette is secured in the housing,
the base latch is configured to move radially outwards upon said proximal movement of the base latch within the housing,
the radial movement of the base latch is configured to cause the dose cassette to become unsecured within the housing,
in response to the dose cassette becoming unsecured, the spring decompresses, causing the back plate to move distally and push the dose cassette out of a distal end of the housing.

7 more elements

A method comprising:

receiving a dose cassette at a housing of an autoinjector device;
securing the dose cassette within the housing using a base latch;
moving a back plate operably connected to a spring, wherein the back plate moves proximally within the housing upon receipt of the dose cassette into the housing;
compressing the spring as a result of the proximal movement of the back plate within the housing;
moving, by an actuator operably connected to the base latch, the dose cassette and the base latch proximally within the housing after the dose cassette is secured in the housing;
and
ejecting the dose cassette from the housing in response to the proximal movement of the base latch and the dose cassette, wherein the ejection of the dose cassette comprises:
moving the base latch radially outwards upon said proximal movement of the base latch within the housing, wherein the movement of the base latch causes the dose cassette to become unsecured within the housing;
decompressing the spring in response to the dose cassette becoming unsecured;
and
moving the back plate distally within the housing as a result of the decompression of the spring, wherein the movement of the back plate pushes the dose cassette out of a distal end of the housing.

8 more elements

Dependencies are inferred from the claim text.

Systems and methods for automatically ejecting a dose cassette of an autoinjector

Life of this patent

Systems and methods for automatically ejecting a dose cassette of an autoinjector

Life of this patent

Abstract

Claims20