# US 2026/0061140 A1 · Pre-filled syringe safety devices and injectors, systems, and methods of use

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- Number: US 2026/0061140 A1
- Document ID: US20260061140A1
- Status: Published application
- Kind: A1
- Application number: 19/385,971
- Filed: 2025-11-11
- Published: 2026-03-05
- Earliest claimed: 2021-04-08
- Assignees: Love Lifesciences LLC
- Applicants: Love Lifesciences LLC
- Inventors: Nicholas Love; Bradley Hopper
- Web page: https://patentgrep.com/patent/US20260061140A1

## CPC

- A61M 5/3202: {Devices for protection of the needle before use, e.g. caps (A61M5/50 takes precedence; protectors for sharps A61B50/3001)}
- A61M 5/3245: {Constructional features thereof, e.g. to improve manipulation or functioning}
- A61M 5/3137: {with finger grip means, e.g. for easy manipulation of the syringe rod}
- A61M 5/31571: {Means preventing accidental administration (for automatic syringes A61M5/20)}
- A61M 5/3158: {the component being manually operated or triggered by an axially moving actuator operated by user, e.g. an axially movable injection button}
- A61M 5/3213: {Caps placed axially onto the needle, e.g. equipped with finger protection guards (axially-extensible protective sleeves A61M5/3243)}
- 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 5/3271: {with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position}
- A61M 5/3272: {having projections following labyrinth paths}
- A61M 5/3204: {Needle cap removers, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices}
- A61M 2005/3247: {Means to impede repositioning of protection sleeve from needle covering to needle uncovering position}
- A61M 2005/3267: {Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body}
- 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

A prefilled syringe safety device and injector for use with a syringe. The prefilled syringe safety device and injector includes a cartridge, a casing, a tube, a biasing member, a ring, and a plunger slider. The cartridge supports the syringe. The cartridge is supported within the casing. The tube includes a tube distal end. The tube is slidably engaged with the cartridge and can be in an extended state and in a retracted state. When in the retracted state, the needle of the syringe extends beyond the tube distal end and the casing distal opening. The biasing member is engaged with the cartridge and the tube to bias the tube in the extended state. The ring includes a protrusion and is engaged with the tube and the biasing member. The protrusion is positioned within the track. The plunger slider extends from the plunger of the syringe.

## Claims

### Claim 1

An injector for use with a syringe having a barrel and a needle, the injector comprising:
a cartridge configured to support the syringe;
a casing including first and second openings, an inner surface, an outer surface opposite the inner surface, and a track defined on the inner surface, the casing configured to support the cartridge and the syringe;
a tube including a tube distal end, the tube slidably engaged with the cartridge and configured to extend and retract relative to the first opening of the casing, wherein, in a retracted state of the tube and with the casing supporting the cartridge and the syringe, the needle of the syringe extends beyond the tube distal end and the first opening of the casing;
a biasing member engaged with the cartridge and the tube so as to bias the tube in an extended state of the tube;
a ring including a protrusion, the ring engaged with the tube and the biasing member, the protrusion positioned at least partially within the track; and
a plunger slider extending from a plunger configured to be positioned within the barrel of the syringe, the plunger slider comprising a portion that is positioned outside the casing when the plunger is positioned within the barrel of the syringe, wherein, when the plunger is positioned within the barrel of the syringe, movement of the portion of the plunger slider and the plunger are fixed.

### Claim 2 (depends on 1)

The injector of claim 1, wherein the cartridge and the casing are removably coupled together.

### Claim 3 (depends on 1)

The injector of claim 1, wherein the plunger slider and the plunger are releasably coupled together.

### Claim 4 (depends on 1)

The injector of claim 1, wherein the plunger slider extends at least partially through the second opening.

### Claim 5 (depends on 4)

The injector of claim 4, wherein the second opening extends through a sidewall of the casing.

### Claim 6 (depends on 5)

The injector of claim 5, wherein the second opening includes a linear section.

### Claim 7 (depends on 6)

The injector of claim 6, wherein the second opening includes a transverse section proximal to the linear section.

### Claim 8 (depends on 1)

The injector of claim 1, wherein the protrusion of the ring is positioned at least partially within the track and is configured to lock the tube in the extended position after the tube has been in the retracted state.

### Claim 9 (depends on 1)

The injector of claim 1, wherein the biasing member is a compression spring.