# US 10,245,379 B2 · Cannulated dose delivery device, system and method of use

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- Number: US 10,245,379 B2
- Document ID: US10245379B2
- Status: Granted
- Kind: B2
- Application number: 15/133,299
- Filed: 2016-04-20
- Published: 2017-10-26
- Granted: 2019-04-02
- Earliest claimed: 2016-04-20
- Assignees: Med Dose Solutions, LLC
- Applicants: Med Dose Solutions, LLC
- Inventors: Steven M. Gonzalez
- Web page: https://patentgrep.com/patent/US10245379B2

## CPC

- A61M 5/178: Syringes
- A61M 5/19: having more than one chamber
- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- A61M 5/345: {Adaptors positioned between needle hub and syringe nozzle}
- A61M 39/10: Tube connectors or tube couplings
- A61M 2005/1787: {Syringes for sequential delivery of fluids, e.g. first medicament and then flushing liquid}
- A61M 2039/1077: {Adapters, e.g. couplings adapting a connector to one or several other connectors}
- 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

The present subject matter includes a cannulated delivery device made of an adapter configured to connect to a syringe; a delivery device tip configured to connect to a dosing chamber; an internal chamber of the cannulated delivery device connecting the adapter and to the delivery device tip, and the internal chamber defining a dose pathway and a system and method of use of the device to increase dosage delivery to a patient while maintaining a sterile fluid pathway.

## Claims

### Claim 1

An apparatus comprising:
a plunger housed in a barrel, wherein the plunger comprises;
a plunger proximal end connector configured to receive a washing agent;
a plunger end cap configured to facilitate the washing of a delivery chamber of the barrel;
an elongated cylinder having an internal chamber defining a fluid pathway between the plunger proximal end connector and the plunger end cap; wherein the plunger end cap comprises a plurality of slits in the distal end of the plunger end cap, wherein the slits are spaced apart.

### Claim 2 (depends on 1)

The apparatus of claim 1 further comprising a distal connector configured to connect the apparatus to a delivery port.

### Claim 3 (depends on 1)

The apparatus of claim 1 wherein the plunger proximal end connector is a luer-lock adaptor.

### Claim 4 (depends on 1)

The apparatus of claim 1 wherein the plunger end cap is connected to the plunger by a “T” shaped retaining member.

### Claim 5 (depends on 1)

The apparatus of claim 1 wherein of each of the plurality of slits in the plunger end cap are parallel with a distal end of the plunger end cap.

### Claim 6 (depends on 5)

The apparatus of claim 5 wherein the plurality of slits are at a 120 degree angle relative to each other.

### Claim 7 (depends on 1)

The apparatus of claim 1 wherein each of the plurality of slits in the plunger end cap are perpendicular with a distal end of the plunger end cap.

### Claim 8 (depends on 1)

The apparatus of claim 1 wherein the plunger end cap further comprises an internal groove and an external groove.

### Claim 9 (depends on 8)

The apparatus of claim 8 wherein the internal groove comprises a conforming receiving section in the distal proximal end of the plunger end cap to accept the plunger retaining member to form a fluid resistant seal.

### Claim 10 (depends on 1)

The apparatus of claim 1 sterilized and packaged in a container.

### Claim 11 (depends on 1)

The apparatus of claim 1 further comprising a plunger top cap.

### Claim 12

A cannulated dose delivery system comprising:
a plunger housed in a barrel, wherein the plunger comprises: a plunger proximal end connector configured to receive a washing agent; a plunger end cap configured to facilitate the washing of a delivery chamber of the barrel; an elongated cylinder having an internal chamber defining a fluid pathway between the plunger proximal end connector and the plunger end cap; wherein the plunger end cap comprises a plurality of slits in the distal end of the plunger end cap wherein the slits are spaced apart; a distal connector configured to connect the plunger housing to a delivery port; and;
a saline flush syringe connected to the plunger proximal end connector.

### Claim 13 (depends on 12)

The cannulated dose delivery system of claim 12, further comprising a delivery port to a patient.

### Claim 14 (depends on 12)

The cannulated dose delivery system of claim 12 wherein each of the plurality of slits in the plunger end cap are parallel with a distal end of the plunger end cap.

### Claim 15 (depends on 14)

The cannulated dose delivery system of claim 14 wherein the plurality of slits are at a120 degree angle relative to each other.

### Claim 16 (depends on 14)

The cannulated dose delivery system of claim 14 wherein each of the plurality of slits in the plunger end cap are perpendicular with a distal end of the plunger end cap.

### Claim 17

A method to increase dosage delivery to a patient while maintaining a sterile fluid pathway comprising:
providing a plunger housed in a barrel, wherein the plunger comprises: a plunger proximal end connector configured to receive a washing agent; a plunger end cap configured to facilitate the washing of a delivery chamber of the barrel; an elongated cylinder having an internal chamber defining a fluid pathway between the plunger proximal end connector and the plunger end cap; wherein the plunger end cap comprises a plurality of slits in the distal end of the plunger end cap wherein the slits are spaced apart; a distal connector configured to connect a cannulated dose delivery device to a delivery port and a plunger top cap;
attaching a needle to the distal end attachment port;
connecting a saline flush syringe to the plunger proximal end connector;
connecting a delivery port to a patient;
delivering a dose of the contrast agent or medication to the delivery chamber;
attaching the cannulated dose delivery device distal connector to a patient delivery port;
removing the plunger top cap;
connecting the saline flush syringe to the cannulated dose delivery device via the plunger proximal connector; and
depressing the flush syringe to deliver a washing solution to the dosing chamber to increase dosage delivery to a patient.

### Claim 18 (depends on 17)

The method of claim 17 wherein the wash solution is saline.