# US 12,179,003 B2 · Autoinjector

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- Number: US 12,179,003 B2
- Document ID: US12179003B2
- Status: Granted
- Kind: B2
- Application number: 17/701,114
- Filed: 2022-03-22
- Published: 2022-07-07
- Granted: 2024-12-31
- Earliest claimed: 2013-07-09
- Assignees: Sanofi-Aventis Deutschland GmbH
- Applicants: Sanofi-Aventis Deutschland GMBH
- Inventors: Thomas Kemp
- Web page: https://patentgrep.com/patent/US12179003B2

## CPC

- A61M 5/3204: {Needle cap removers, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices}
- A61M 5/2033: {Spring-loaded one-shot injectors with or without automatic needle insertion (multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287)}
- A61M 5/206: {with automatic needle insertion}
- A61M 5/326: {Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user}
- A61M 5/5086: {for indicating if defective, used, tampered with or unsterile}
- A61M 2005/2013: {triggering of discharging means by contact of injector with patient body}
- A61M 2005/208: {Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin}
- A61M 2005/3247: {Means to impede repositioning of protection sleeve from needle covering to needle uncovering position}
- A61M 2205/581: by audible feedback
- A61M 2205/582: by tactile feedback
- A61M 2205/584: having a color code
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

An autoinjector includes a case having a rib, a needle shroud telescopically coupled to the case, a carrier slidably arranged in the case and adapted to hold a medicament container, and a collar rotatably and slidably disposed in the case and coupled to the needle shroud and the carrier. The needle shroud is movable between a first extended position, a retracted position and a locked second extended position. The carrier is movable from a first axial position to a second axial position relative to the case. The collar abuts the rib when the needle shroud is in the first extended position and the carrier is in the first axial position, and the collar disengages the rib when the needle shroud is in the retracted position and the carrier is in the second axial position.

## Claims

### Claim 1

An arrangement for an autoinjector comprising:
a case,
a needle shroud telescopically movable relative to the case and movable from an extended position with the needle shroud protruding distally from the case to a retracted position that is axially displaced from the extended position in a proximal direction,
a component movably disposed in the case, wherein the component is operatively coupled to the needle shroud,
a spring biasing the component in a distal direction relative to the case,
wherein, when the needle shroud is moved from the extended position towards the retracted position, the component moves proximally relative to the case against a bias of the spring.

### Claim 2 (depends on 1)

The arrangement of claim 1, wherein the component is disposed in the case so as to be rotatable and axially movable.

### Claim 3 (depends on 2)

The arrangement of claim 2, wherein, when the needle shroud is moved from the extended position towards the retracted position, the component rotates relative to the case.

### Claim 4 (depends on 1)

The arrangement of claim 1, wherein the needle shroud, in the extended position, is arranged to mechanically interact with the component to prevent movement of the needle shroud away from the extended position and in a direction away from the retracted position.

### Claim 5 (depends on 4)

The arrangement of claim 4, wherein the needle shroud comprises a shroud boss which is arranged to abut the component to prevent movement of the needle shroud away from the retracted position, when the needle shroud is in the extended position.

### Claim 6 (depends on 5)

The arrangement of claim 5, wherein the component is prevented from moving in the distal direction relative to the case, when the needle shroud is in the extended position, by a case rib.

### Claim 7 (depends on 1)

The arrangement of claim 1, wherein the spring is a compression spring, and wherein, when the needle shroud is moved from the extended position towards the retracted position, the component is moved proximally and compresses the compression spring.

### Claim 8 (depends on 7)

The arrangement of claim 7, wherein the compression spring is compressed between the case and the component when the needle shroud is in the extended position.

### Claim 9 (depends on 7)

The arrangement of claim 7, wherein the component is moved proximally in response to movement of the needle shroud in the proximal direction.

### Claim 10 (depends on 1)

An autoinjector comprising the arrangement of claim 1, wherein the case is designed to receive a medicament container.

### Claim 11 (depends on 10)

The autoinjector of claim 10, wherein the autoinjector further comprises a plunger, the plunger being arranged to drive a stopper in the distal direction relative to the medicament container to dispense medicament from the medicament container.

### Claim 12 (depends on 11)

The autoinjector of claim 11, wherein the plunger is biased by a drive spring in the distal direction, and wherein a release mechanism is arranged to prevent movement of the plunger driven by the drive spring when the needle shroud is in the extended position.

### Claim 13 (depends on 12)

The autoinjector of claim 12, wherein the release mechanism is configured such that the plunger is released so as to be movable in the distal direction relative to the case for a dispensing operation to dispense medicament from the medicament container when the needle shroud reaches the retracted position.

### Claim 14 (depends on 13)

The autoinjector of claim 13, wherein, after the dispensing operation, the needle shroud is movable to a second extended position, which is axially displaced from the extended position in direction away from the retracted position.

### Claim 15 (depends on 14)

The autoinjector of claim 14, wherein, the needle shroud, when in the second extended position, is prevented from moving into the retracted position relative to the case.

### Claim 16 (depends on 10)

The autoinjector of claim 10, wherein the medicament container is arranged in the case and contains a medicament.

### Claim 17 (depends on 16)

The autoinjector of claim 16, wherein the medicament container is a syringe with a needle at a distal end of the syringe.

### Claim 18 (depends on 11)

The autoinjector of claim 11, wherein the component is a collar disposed in the case, and wherein the plunger extends through the collar.