# US 2024/0198005 A1 · Syringes configured to inhibit forward plunger movement

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- Number: US 2024/0198005 A1
- Document ID: US20240198005A1
- Status: Published application
- Kind: A1
- Application number: 18/595,845
- Filed: 2024-03-05
- Published: 2024-06-20
- Earliest claimed: 2021-12-17
- Assignees: Kurin, Inc.
- Applicants: Kurin, Inc.
- Inventors: Kevin Nason; Jeffrey Veloz; Bobby E. Rogers; Nolan Pupping
- Web page: https://patentgrep.com/patent/US20240198005A1

## CPC

- A61M 5/3134: {characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula}
- A61B 5/15003: {for venous or arterial blood}
- A61B 5/150221: {Valves}
- A61B 5/150236: {Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood}
- A61B 5/150244: {Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood}
- A61B 5/153: {Devices} specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61M 5/31501: {Means for blocking or restricting the movement of the rod or piston (A61M5/5013 takes precedence)}
- A61M 5/31571: {Means preventing accidental administration (for automatic syringes A61M5/20)}
- A61M 5/31595: {Pre-defined multi-dose administration by repeated overcoming of means blocking the free advancing movement of piston rod, e.g. by tearing or de-blocking}
- A61B 5/150992: {Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; Blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings or valves}
- A61B 5/154: {Devices} using pre-evacuated means
- A61M 2005/3128: {Incorporating one-way valves, e.g. pressure-relief or non-return valves}
- A61M 2005/31506: {formed as a single piece, e.g. moulded}
- A61M 2005/31508: {provided on the piston-rod}
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Disclosed are systems that include a syringe having a barrel configured to hold a fluid and a plunger configured to draw the fluid into the barrel when the plunger is pulled backward through the barrel. The syringe is configured to inhibit forward movement of the plunger. For example, the systems can include mating pockets configured to engage barbs to inhibit forward movement of the plunger.

## Claims

### Claim 1

A system comprising:
a syringe comprising:
a barrel configured to hold a fluid;
a plunger configured to draw the fluid into the barrel when the plunger is pulled backward through the barrel; and
one or more internal features configured to inhibit movement of the plunger.

### Claim 2 (depends on 1)

The system of claim 1, wherein the one or more internal features are arranged to enable a predetermined draw volume.

### Claim 3 (depends on 1)

The system of claim 1, wherein the one or more internal features are spaced apart in increments that correspond to indicia provided on an outside of the barrel indicating an amount of fluid collected in the barrel.

### Claim 4 (depends on 1)

The system of claim 1, wherein the one or more internal features includes a plurality of internal features.

### Claim 5 (depends on 4)

The system of claim 4, wherein the plurality of internal features are spaced apart longitudinally in increments.

### Claim 6 (depends on 5)

The system of claim 5, wherein each increment corresponds to a specific incremental volume within the barrel.

### Claim 7 (depends on 1)

The system of claim 1, further configured such that forward movement of the plunger can be inhibited when a plunger seal moves past the one or more internal features.

### Claim 8 (depends on 1)

The system of claim 1, wherein the one or more internal features include the barrel having at least one inner ridge.

### Claim 9 (depends on 8)

The system of claim 8, wherein an inner ridge is arranged to enable a predetermined draw volume.

### Claim 10 (depends on 8)

The system of claim 8, further configured such that forward movement of the plunger can be inhibited when a plunger seal moves past an inner ridge.

### Claim 11 (depends on 8)

The system of claim 8, further comprising an inner ridge having a ramp that inclines towards a proximal end of the barrel to a vertical wall, the ramp permitting backward movement of the plunger over the ramp and the vertical wall inhibiting forward movement of the plunger.

### Claim 12 (depends on 1)

The system of claim 1, wherein the one or more internal features comprise the barrel having inner ridges spaced apart in increments that correspond to indicia provided on an outside of the barrel indicating an amount of fluid collected in the barrel.

### Claim 13 (depends on 8)

The system of claim 8, wherein the one or more internal features further comprise at least one mating pocket configured to engage an inner ridge.

### Claim 14 (depends on 1)

The system of claim 1, wherein the one or more internal features comprise at least one inner ridge on the plunger configured to engage with at least one mating pocket on the barrel.

### Claim 15 (depends on 1)

The system of claim 1, wherein the one or more internal features include at least one barb.

### Claim 16 (depends on 15)

The system of claim 15, wherein a barb is arranged to enable a predetermined draw volume.

### Claim 17 (depends on 15)

The system of claim 15, further configured such that forward movement of the plunger can be inhibited when a plunger seal moves past a barb.

### Claim 18 (depends on 1)

The system of claim 1, wherein the one or more internal features comprise the barrel having barbs spaced apart in increments that correspond to indicia provided on an outside of the barrel indicating an amount of fluid collected in the barrel.

### Claim 19 (depends on 15)

The system of claim 15, wherein the one or more internal features further comprise at least one mating pocket configured to engage a barb.

### Claim 20 (depends on 1)

The system of claim 1, wherein the one or more internal features comprise at least one barb on the plunger configured to engage with at least one mating pocket on the barrel.

### Claim 21 (depends on 1)

The system of claim 1, wherein the one or more internal features comprise at least one barb on the barrel configured to engage with at least one mating pocket on the plunger.

### Claim 22 (depends on 1)

The system of claim 1, wherein the plunger includes an interface having an open-ended cylinder with a collection needle and a sampling channel through the plunger.

### Claim 23 (depends on 1)

The system of claim 1, wherein the one or more internal features include at least one step, annular ring, or protrusion.