# US 11,298,268 B2 · Multiple-wound negative pressure wound therapy using multiple fluid collection volumes

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- Number: US 11,298,268 B2
- Document ID: US11298268B2
- Status: Granted
- Kind: B2
- Application number: 16/575,614
- Filed: 2019-09-19
- Published: 2020-03-19
- Granted: 2022-04-12
- Earliest claimed: 2018-09-19
- Assignees: DeRoyal Industries, Inc.
- Applicants: DeRoyal Industries, Inc.
- Inventors: Vincent Denis Jardret; Jonathan Matthew Cayce
- Web page: https://patentgrep.com/patent/US11298268B2

## CPC

- A61F 13/05: specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
- A61M 1/918: {for multiple suction locations}
- A61F 13/01021: {characterised by the structure of the dressing}
- A61M 1/94: {with gas supply means}
- A61M 1/96: {Suction control thereof}
- A61F 2013/00174: {possibility of applying pressure}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- 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 negative pressure wound therapy system is configured for treating multiple wounds on a patient's body. The system preferably includes a source of negative air pressure, an air source, a first fluid collection volume, and a second fluid collection volume. The source of negative air pressure is in fluid communication with the first fluid collection volume, the first collection volume is in fluid communication with the second fluid collection volume, and the second fluid collection volume is in fluid communication with the air source, so that the source of negative air pressure, the first fluid collection volume, the second fluid collection volume, and the air source are fluidly connected in series.

## Claims

### Claim 1

A negative pressure wound therapy system for treating multiple wounds on a patient's body, the system comprising:
a source of negative air pressure;
an air source;
a first fluid collection volume;
a second fluid collection volume;
a first wound-covering dome configured to be disposed over a first wound on the patient's body; and
a second wound-covering dome configured to be disposed over a second wound on the patient's body,
wherein the source of negative air pressure is in fluid communication with the first fluid collection volume, the first collection volume is in fluid communication with the first wound-covering dome, the first wound-covering dome is in fluid communication with the second fluid collection volume, the second fluid collection volume is in fluid communication with the second wound-covering dome, and the second wound-covering dome is in fluid communication with the air source, and
wherein the source of negative air pressure, the first fluid collection volume, the first wound-covering dome, the second fluid collection volume, the second wound-covering dome, and the air source are fluidly connected in series.

### Claim 2 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a housing that contains the air source.

### Claim 3 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a bacterial filter in fluid communication with the air source.

### Claim 4 (depends on 1)

The negative pressure wound therapy system of claim 1 wherein the air source comprises a source of positive air pressure.

### Claim 5 (depends on 1)

The negative pressure wound therapy system of claim 1 wherein the source of negative air pressure and the air source comprise an air pump.

### Claim 6 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a first canister that contains the first fluid collection volume, and a second canister that contains the second fluid collection volume.

### Claim 7 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a canister that contains the first fluid collection volume and the second fluid collection volume.

### Claim 8 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a bacterial filter in fluid communication between the second fluid collection volume and the first wound-covering dome.

### Claim 9 (depends on 8)

The negative pressure wound therapy system of claim 8 wherein the bacterial filter is water impermeable.

### Claim 10 (depends on 1)

The negative pressure wound therapy system of claim 1 further comprising a bacterial filter in fluid communication between the first fluid collection volume and the source of negative air pressure.

### Claim 11 (depends on 10)

The negative pressure wound therapy system of claim 10 wherein the bacterial filter is water impermeable.

### Claim 12

A negative pressure wound therapy system for treating multiple wounds on a patient's body, the system comprising:
a source of negative air pressure;
an air source;
a fluid collection volume;
a first wound-covering dome configured to be disposed over a first wound on the patient's body; and
a second wound-covering dome configured to be disposed over a second wound on the patient's body,
wherein the source of negative air pressure is in fluid communication with the fluid collection volume, the fluid collection volume is in fluid communication with the first wound-covering dome, the first wound-covering dome is in fluid communication with the second wound-covering dome, and the second wound-covering dome is in fluid communication with the air source, and
wherein the source of negative air pressure, the fluid collection volume, the first wound-covering dome, the second wound-covering dome, and the air source are fluidly connected in series.

### Claim 13 (depends on 12)

The negative pressure wound therapy system of claim 12 further comprising a liquid permeable bacterial filter in fluid communication between the first wound-covering dome and the second wound-covering dome.

### Claim 14

A fluid collection canister for use in a negative pressure wound therapy system for treating multiple wounds on a patient's body, the fluid collection canister comprising:
a first fluid collection volume disposed within the fluid collection canister, first fluid collection volume having:
a first inlet port configured to be in fluid communication with a first wound-covering dome; and
a first outlet port configured to be in fluid communication with a source of negative air pressure;
a second fluid collection volume disposed within the fluid collection canister, second fluid collection volume having:
a second inlet port configured to be in fluid communication with a second wound-covering dome; and
a second outlet port configured to be in fluid communication with the source of negative air pressure; and
a wall disposed within the fluid collection canister separating the first fluid collection volume and the second fluid collection volume.

### Claim 15 (depends on 14)

The fluid collection canister of claim 14 further comprising a first bacterial filter disposed at the first outlet port, and a second bacterial filter disposed at the second outlet port.

### Claim 16 (depends on 15)

The fluid collection canister of claim 15 wherein the first and second bacterial filters are water impermeable.

### Claim 17

A negative pressure wound therapy system for treating multiple wounds on a patient's body, the system comprising:
a source of negative air pressure;
an air source;
a first fluid collection volume;
a second fluid collection volume;
a first wound covering configured to be disposed over a first wound on the patient's body; and
a second wound covering configured to be disposed over a second wound on the patient's body,
wherein the source of negative air pressure is in fluid communication with the first fluid collection volume, the first collection volume is in fluid communication with the first wound covering, the first wound covering is in fluid communication with the second fluid collection volume, the second fluid collection volume is in fluid communication with the second wound covering, and the second wound covering is in fluid communication with the air source, and
wherein the source of negative air pressure, the first fluid collection volume, the first wound covering, the second fluid collection volume, the second wound covering, and the air source are fluidly connected in series.