# US 12,109,403 B2 · Needle hub for drug delivery device

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- Number: US 12,109,403 B2
- Document ID: US12109403B2
- Status: Granted
- Kind: B2
- Application number: 17/569,143
- Filed: 2022-01-05
- Published: 2022-07-07
- Granted: 2024-10-08
- Earliest claimed: 2021-01-05
- Assignees: Becton, Dickinson and Company
- Applicants: Becton, Dickinson and Company
- Inventors: Steve Beguin; David James Coleman; Patrick Le Gal Redon; Marko Plevnik; Nathan Lyell
- Web page: https://patentgrep.com/patent/US12109403B2

## CPC

- A61M 5/14248: {of the skin patch type}
- A61M 5/14244: {adapted to be carried by the patient, e.g. portable on the body}
- A61M 5/158: Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body}
- A61M 5/162: Needle sets, i.e. connections by puncture between reservoir and tube
- A61M 5/1454: {spring-actuated, e.g. by a clockwork}
- A61M 2005/14252: {with needle insertion means}
- A61M 2005/1426: {with means for preventing access to the needle after use}
- A61M 2005/1585: {Needle inserters}
- A61M 2005/1586: {Holding accessories for holding infusion needles on the body}
- A61M 2005/1587: {suitable for being connected to an infusion line after insertion into a patient}
- 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 needle hub for a drug delivery device includes a hub body, an activation button, a needle holder moveable relative to the hub body, a needle attached to the needle holder, a needle spring biasing the needle holder to a retracted position where the needle is positioned within the hub body, a cannula holder moveable relative to the hub body and the needle holder, a cannula attached to the cannula holder, with the cannula configured to be in fluid communication with a fluid source, and a cannula spring biasing the cannula holder to a retracted position. Movement of a portion of the hub body is configured to disengage a connection between the cannula holder and the hub body to allow the cannula holder to return to the retracted position.

## Claims

### Claim 1

A needle hub for a drug delivery device comprising:
a hub body;
an activation button manually moveable relative to the hub body, a portion of the activation button is positioned outside of the hub body, the activation button having a first actuation surface;
a needle holder moveable relative to the hub body, the needle holder having a second actuation surface, the first actuation surface of the activation button configured to engage the second actuation surface of the needle holder;
a needle attached to the needle holder;
a needle spring biasing the needle holder to a retracted position where the needle is positioned within the hub body;
a cannula holder moveable relative to the hub body and the needle holder;
a cannula attached to the cannula holder, the cannula configured to be in fluid communication with a fluid source; and
a cannula spring biasing the cannula holder to a retracted position where the cannula is positioned within the hub body,
wherein the activation button is configured such that the portion of the activation button positioned outside the hub body can be accessed by the user to manually slide the entire activation button along the hub body to cause the first actuation surface of activation button to engage the second actuation surface of the needle holder to move the needle holder and the cannula holder from the respective retracted positions to insertion positions where distal ends of the needle and the cannula are positioned outside of the hub body, with the needle holder configured to return to the retracted position while the cannula holder remains in the insertion position, wherein movement of a portion of the hub body is configured to disengage a connection between the cannula holder and the hub body to allow the cannula holder to return to the retracted position,
wherein the activation button is moveable along a first axis, and wherein the needle holder and the cannula holder are moveable along a second axis perpendicular to the first axis, and wherein the first actuation surface of the activation button is configured to disengage from the second actuation surface of the needle holder after movement of the activation button a predetermined distance along the first axis.

### Claim 2 (depends on 1)

The needle hub of claim 1, wherein the needle holder comprises a passageway configured to be in fluid communication with a fluid source, the needle in fluid communication with the passageway of the needle holder.

### Claim 3 (depends on 2)

The needle hub of claim 2, wherein at least a portion of the needle is received within the cannula, and wherein the cannula holder comprises a seal engaged with the needle.

### Claim 4 (depends on 1)

The needle hub of claim 1, wherein the needle hub comprises a first projection and the cannula holder comprises a second projection, the first projection of the needle hub engages the second projection of the cannula holder when the cannula is in the insertion position to restrict movement of the cannula holder to the retracted position.

### Claim 5 (depends on 4)

The needle hub of claim 4, wherein the needle hub comprises a removal tab, and wherein movement of the removal tab releases an engagement between the first projection of the needle hub and the second projection of the cannula holder to allow the cannula spring to bias the cannula to the retracted position.

### Claim 6 (depends on 5)

The needle hub of claim 5, wherein at least a portion of the removal tab is configured to be engaged with a skin surface of a person after attaching the needle hub to a person.

### Claim 7 (depends on 1)

The needle hub of claim 1, further comprising a skin tenting reduction mechanism comprising an adhesive surface configured to be adhered to a skin surface of a person, the skin tenting reduction mechanism configured to stretch the skin surface at a location where the needle penetrates the skin surface.