# US 12,005,190 B2 · Nasal cannula > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,190 B2 - Document ID: US12005190B2 - Status: Granted - Kind: B2 - Application number: 17/042,456 - Filed: 2019-03-27 - Published: 2021-01-28 - Granted: 2024-06-11 - Earliest claimed: 2018-03-29 - Assignees: Mediplus Limited - Applicants: Mediplus Ltd - Inventors: Robert Graham Urie - Web page: https://patentgrep.com/patent/US12005190B2 ## CPC - A61M 16/0672: {Nasal cannula assemblies for oxygen therapy} - A61M 16/085: {Gas sampling} - A61M 2202/0208: Oxygen - A61M 2202/0225: Carbon oxides, e.g. Carbon dioxide - A61M 2205/21: insensitive to tilting or inclination, e.g. spill-over prevention - A61M 2230/43: Composition of exhalation - 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 nasal cannula comprises a body portion, having a first end and a second end spaced from the first end by the body portion; a body fluid inlet port formed at the first end, and a body fluid outlet port formed at the second end; and a first nasal inlet port and a first nasal outlet port each extending from the body portion of the cannula. The first nasal inlet port is in fluid communication with the body fluid outlet port, and the first nasal outlet port is in fluid communication with the body fluid inlet port. The nasal cannula includes first and second end caps at the first and second ends respectively. The first and second end caps are attachable to the body portion. The body fluid inlet port is formed in the first end cap, and the body fluid outlet port is formed in the second end cap. ## Claims ### Claim 1 A nasal cannula comprising: a body portion, having a first end and a second end, the first and second ends being spaced apart from one another by the body portion; a body fluid outlet port formed at the first end, and a body fluid inlet port formed at the second end; first and second nasal projections extending from the body portion where the second nasal projection is spaced apart from the first nasal projection, the first nasal projection comprising a first nasal inlet port and a first nasal outlet port each spaced apart from the body portion, the second nasal projection comprising a second nasal inlet port and a second nasal outlet port each spaced apart from the body portion, the first and second nasal inlet ports being in fluid communication with the body fluid outlet port, and the first and second nasal outlet ports being in fluid communication with the body fluid inlet port a planar dividing wall extending through the body portion and substantially longitudinally at least partially through each nasal projection, where the planar dividing wall, together with the walls of the nasal projections and the walls of the body portion, separates the fluid communication between the first and second nasal inlet ports and body fluid outlet port from the fluid communication between the first and second nasal outlet ports and the body fluid inlet port; and first and second end caps at the first and second ends respectively, which first and second end caps are attachable to the body portion and comprise a slot adapted to receive and support the planar dividing wall, and wherein the body fluid outlet port is formed in the first end cap, and the body fluid inlet port is formed in the second end cap; wherein the first and second nasal inlet ports are positioned further from the body portion than the first and second nasal outlet ports. ### Claim 2 (depends on 1) The nasal cannula as claimed in claim 1, further comprising a plate extending from the body portion. ### Claim 3 (depends on 1) The nasal cannula as claimed in claim 1, wherein the body portion is substantially tubular. ### Claim 4 (depends on 1) The nasal cannula as claimed in claim 1, wherein the first and second end caps are each angled relative to the body portion. ### Claim 5 (depends on 1) The nasal cannula as claimed in claim 1, wherein the first and second end caps are each attached to the body portion by means of an adhesive. ### Claim 6 (depends on 1) The nasal cannula as claimed in claim 1, wherein the first and second end caps comprise first and second spigots respectively, which spigots are shaped to fit into a hollow end of the body portion. ### Claim 7 (depends on 6) The nasal cannula according to claim 6, wherein the body fluid inlet port and the body fluid outlet port each comprise an elongate portion extending from a respective end cap. ### Claim 8 (depends on 1) The nasal cannula as claimed in claim 1, comprising an inlet lumen extending from the body fluid inlet port to the first and second nasal outlet ports, and an outlet lumen extending from the first and second nasal inlet ports to the body fluid outlet port. ### Claim 9 (depends on 8) The nasal cannula as claimed in claim 8, wherein each nasal projection comprises an outlet channel forming part of the inlet lumen, and an inlet channel forming part of the outlet lumen, the inlet channel and the outlet channel each extending substantially longitudinally through a respective nasal projection. ### Claim 10 (depends on 1) The nasal cannula as claimed in claim 1, wherein each nasal projection comprises a proximal portion and a distal portion, wherein each inlet channel extends through the proximal portion and the distal portion of a respective nasal projection and each outlet channel extends through the proximal portion only of a respective nasal projection. ### Claim 11 (depends on 1) The nasal cannula according to claim 1, wherein in the body portion is made from a medical grade polymer, optionally PVC, optionally polyurethane. ### Claim 12 (depends on 1) The nasal cannula according to claim 1, wherein the first and second end caps are made from polycarbonate or ABS.