US 12,734,299 B2Granted

Feedback mechanisms

AssigneeShl Medical AG

InventorsHsuan Wang, Ling-Hsiang Chao, Meng-Jhen Chiou, Chia-Hsin Su, Tzu-Cheng Yeh

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Abstract

A start of medicament delivery notification mechanism is presented where the notification mechanism is positioned within a housing of a medical device and includes a rear cap secured to a distal end of the housing, where the rear cap has a hollow tubular housing extending proximally from a distal end of the rear cap such that the tubular housing is cantilevered within and rotatably fixed relative to the housing and is parallel with a longitudinal axis of the housing. A rotator rotatably is positioned around the tubular housing such that rotator can rotate relative to the tubular housing from a first position to a second position, where the second position coincides with an initiation of a delivery of a dose of medicament. The rotator further has a contact surface that engages with and subsequently disengages from a corresponding contact surface located on the rear cap or on an inside surface of the housing.

Claims17

Dependent claims

A rotator for a medicament delivery device, the rotator comprising:

a tubular body extending from a proximal end to a distal end in an axial direction relative to an axis;
one or more ridges extending from a surface of the tubular body,
the one or more ridges defining a track on the surface of the tubular body, the track extending in the axial direction from a distal end of the track to a proximal end of the track,
the track comprising one pathway at the distal end of the track and two pathways at the proximal end of the track, wherein the two pathways at the proximal end of the track are separated by at least one of the one or more ridges;
and
a protrusion extending from a surface of the track,
the protrusion comprising a surface extending in the track,
the surface of the protrusion comprising a first sloped portion and a second sloped portion closer to the distal end of the tubular body than the first sloped portion, wherein the first sloped portion and the second sloped portion are angled relative to the surface of the track,
wherein the first sloped portion is angled towards the proximal end of the tubular body and the second sloped portion is angled towards the distal end of the tubular body,
wherein the rotator comprises a first tongue configured to allow a protrusion of a medicament delivery member guard to move over the first tongue in two directions, and a second tongue configured to allow the protrusion of the medicament delivery member guard to move over the second tongue in one direction,
wherein the protrusion is on the first tongue,
wherein the first tongue extends in an opening in the surface in the track, and
wherein the first tongue is configured to flex relative to the surface of the track.

10 more elements

A rotator for a medicament delivery device, the rotator comprising:

a tubular body having a proximal end and a distal end and an axis;
a plurality of ridges extending from a surface of the tubular body that define a track on the surface of the tubular body, where the track comprises a first, second and third pathway, where a transition pathway separates the first and second pathway;
a first flexible tongue configured to allow a protrusion of a medicament delivery member guard to move over the first flexible tongue in two directions, where the first flexible tongue is located in the second pathway, and where the first flexible tongue comprises a first protrusion extending outward relative to the surface of the track;
and
a second flexible tongue configured to allow the protrusion of the medicament delivery member guard to move over the second flexible tongue in one direction, where the second flexible tongue is located in the third pathway, and where the second flexible tongue comprises a second protrusion extending outward relative to the surface of the track,
wherein the first and third pathways are located at the proximal end of the rotator,
wherein the first and second flexible tongues extend into openings formed from cut outs in the surface of the track, and
wherein the first protrusion interacts with the medicament delivery member guard at a start of medicament delivery and the second protrusion interacts with the medicament delivery member guard after the delivery of medicament is completed.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/774,935Filed 5 Nov 2020
Priority: EP 192137465 Dec 2019
Published: US 2022/0387719 A18 Dec 2022
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

A61M 5/31505
Means for blocking or restricting the movement of the rod or piston: integral with the syringe barrel, i.e. connected to the barrel so as to make…
A61M 5/20
Syringes: automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
A61M 5/2033
Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically: spring-loaded one-shot…
A61M 5/3157
Means improving security or handling thereof: means providing feedback signals when administration is completed