ORAL NASAL CANNULA

• US 20090133699A1
• Filed: 02/02/2009
• Published: 05/28/2009
• Est. Priority Date: 08/31/2004
• Status: Abandoned Application

• Current Assignee: Anil K. Nalagatla, David J. Keilholz, Gregory D. Bishop, Lee K. Kulle, Louis Sabo, Richard W. Flaker, Tommy C. Cushing
• Original Assignee: Anil K. Nalagatla, David J. Keilholz, Gregory D. Bishop, Lee K. Kulle, Louis Sabo, Richard W. Flaker, Tommy C. Cushing
• Inventors: Nalagatla, Anil K., Bishop, Gregory D., Keilholz, David J., Flaker, Richard W., Sabo, Louis, Cushing, Tommy C., Kulle, Lee K.
• Application Number:
  US12/363,957
• Publication Number:
  US 20090133699A1
• Time in Patent Office: Days
• US Class Current: 128/205.270
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/411 Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
• CPC Class Codes: A61B 5/6819 Nose
• CPC Class Codes: A61B 5/682 Mouth, e.g., oral cavity; tongue; Lips; Teeth
• CPC Class Codes: A61B 5/7495 using a reader or scanner device, e.g. barcode scanner
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/0493 with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block
• CPC Class Codes: A61M 16/0672 Nasal cannula assemblies for oxygen therapy
• CPC Class Codes: A61M 16/0677 Gas-saving devices therefor
• CPC Class Codes: A61M 16/0688 by means of an adhesive
• CPC Class Codes: A61M 16/0808 Condensation traps
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2021/0027 by the hearing sense
• CPC Class Codes: A61M 21/02 for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia for massage A61H; electrotherapy A61N, e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/36021
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2202/048 : Anaesthetics
• CPC Class Codes: A61M 2202/062 : Desiccants
• CPC Class Codes: A61M 2205/05 : combined with other kinds of therapy
• CPC Class Codes: A61M 2205/12 : with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/123 : with incorporated reservoirs
• CPC Class Codes: A61M 2205/13 : with means for the detection of operative contact with patient, e.g. lip sensor
• CPC Class Codes: A61M 2205/14 : Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/273 : preventing reuse, e.g. of disposables
• CPC Class Codes: A61M 2205/3334 : Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3553 : remote, e.g. between patient's home and doctor's office
• CPC Class Codes: A61M 2205/3561 : local, e.g. within room or hospital
• CPC Class Codes: A61M 2205/3584 : using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/505 : Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/6072 : Bar codes
• CPC Class Codes: A61M 2205/7536 : allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 2209/084 : Supporting bases, stands for equipment
• CPC Class Codes: A61M 2210/0618 : Nose
• CPC Class Codes: A61M 2210/0625 : Mouth
• CPC Class Codes: A61M 2210/0662 : Ears
• CPC Class Codes: A61M 2230/04 : Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 2230/06 : Heartbeat rate only
• CPC Class Codes: A61M 2230/205 : partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/30 : Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 2230/432 : partial CO2 pressure (P-CO2)
• CPC Class Codes: A61M 2230/63 : Motion, e.g. physical activity
• CPC Class Codes: A61M 5/142 : Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14228 : with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: A61M 5/162 : Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• CPC Class Codes: A61M 5/16831 : Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066
• CPC Class Codes: A61M 5/172 : electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: G16H 20/17 : delivered via infusion or injection
• CPC Class Codes: G16H 40/63 : for local operation

Abstract

Disclosed is a respiratory cannula assembly to deliver and receive gases from a patient. The cannula assembly contains two oral prongs for delivering and receiving gases from the patient as well as at least one gas delivery nasal prong and at least one gas receiving nasal prong. The gas receiving nasal prong extends further into the patients nostril than the gas delivery nasal prong. The cannula assembly further contains a connector that aids in coupling to a medical device, the connector including independent oral and nasal moisture traps that remove moisture from exhaled patient gases.

Claims

1. A cannula assembly comprising:

a) an oral-nasal cannula disposable on the face of a patient and including a respiratory-gas-sampling nasal prong and a respiratory-gas-sampling oral prong; and

a) a slidable tube slidably connected to one of the respiratory-gas-sampling nasal and oral prongs to accommodate different distances between the nose and mouth of different patients.

2. The cannula assembly of claim 1, wherein the slidable tube is slidably connected to the respiratory-gas-sampling oral prong, wherein the slidable tube has a substantially right-angle bend and a distal end, and wherein, when the cannula is disposed on the face of the patient, the distal end of the slidable tube extends distally toward or into the mouth of the patient.

3. A cannula assembly comprising:

a) a cannula disposable on the face of a patient and including a respiratory-gas-sampling or respiratory-gas-delivery oral prong having an opening; and

b) a user-detachable oral prong extension which comes removably attached to the oral prong and which is user-connectable to the opening of the oral prong.

4. A cannula assembly comprising a cannula disposable on the face of a patient and including a respiratory-gas-sampling oral prong having a distal end and a respiratory-gas-delivery oral prong having a distal end, wherein, when the cannula is disposed on the face of the patient, the distal end of the respiratory-gas-sampling oral prong extends distally further toward or into the mouth of the patient than the distal end of the respiratory-gas-delivery oral prong.

5. A cannula assembly comprising a cannula disposable on the face of a patient and including left and right cannula support wings each having a wing tip portion with an adhesive pad removably adhesively attachable to a side of the face of the patient.

6. A cannula assembly comprising a cannula disposable on the face of a patient, including a cannula body having a respiratory-gas-sampling nasal prong, and including a cannula cap having a respiratory-gas-delivery nasal prong with a tube-receiving hole, wherein the cannula cap is attached to the cannula body with the respiratory-gas-sampling nasal prong passing through and extending beyond the tube-receiving hole, and wherein the tube-receiving hole is disposed to bend the respiratory-gas-sampling nasal prong toward the nose of the patient when the cannula is disposed on the face of the patient.

7. A cannula assembly comprising a cannula disposable on the face of a patient and including a respiratory-gas-sampling nasal prong having a distal end and a respiratory-gas-delivery nasal prong having a distal end, wherein, when the cannula is disposed on the face of the patient, the distal end of the respiratory-gas-sampling nasal prong extends distally further toward or into one of the nostrils of the patient than the distal end of the respiratory-gas-delivery nasal prong.

8. The cannula assembly of claim 7, wherein the respiratory-gas-sampling nasal prong is circumferentially surrounded by the respiratory-gas-delivery nasal prong.

9. A cannula assembly comprising:

a) an oral-nasal cannula disposable on the face of a patient and including a left-nostril respiratory-gas-sampling tube, a right-nostril respiratory-gas-sampling tube, and an oral respiratory-gas-sampling tube; and

b) a connector including a cover and a back plate attached to the cover, wherein the cover includes an interior nasal moisture trap chamber and an interior oral moisture trap chamber isolated from the interior nasal moisture trap chamber, wherein the back plate includes a nasal capnometry port and an oral capnometry port, wherein the left and right nostril respiratory-gas-sampling tubes are connected to the cover and are in fluid communication with the interior nasal moisture trap chamber, wherein the oral respiratory-gas-sampling tube is connected to the cover and is in fluid communication with the interior oral moisture trap chamber, wherein the nasal capnometry port is in fluid communication with the interior nasal moisture trap chamber, and wherein the oral capnometry port is in fluid communication with the interior oral moisture trap chamber.

10. The cannula assembly of claim 9, wherein the connector also includes a hydrophobic filter disposed between the interior nasal moisture trap chamber and the nasal capnometry port and a hydrophobic filter disposed between the interior oral moisture trap chamber and the oral capnometry port.

11. The cannula assembly of claim 9, wherein the connector also includes an inter-flow-path-sealing gasket disposed between the interior nasal and oral moisture trap chambers and the nasal pressure, nasal capnometry, and oral capnometry ports, and wherein the inter-flow-path-sealing gasket includes annular towers which extend into the nasal capnometry and oral capnometry ports and provide, at least in part, the fluid communication between the interior nasal moisture trap chamber and the nasal capnometry port and between the oral moisture trap chamber and the oral capnometry port.

12. A cannula assembly comprising:

a) a cannula disposable on the face of a patient and including a respiratory-gas-sampling tube; and

b) a connector including;

(1) a cover;

(2) a back plate attached to the cover, wherein the cover includes an interior moisture trap chamber, wherein the back plate includes a capnometry port, wherein the respiratory-gas-sampling tube is connected to the cover and is in fluid communication with the interior moisture trap chamber, and wherein the capnometry port is in fluid communication with the interior moisture trap chamber; and

(3) a gasket disposed between the interior moisture trap chamber and the capnometry port, wherein the gasket includes an annular tower which extends into the capnometry port and provides, at least in part, the fluid communication between the interior moisture trap chamber and the capnometry port.

13. A cannula water-trap subassembly comprising:

a) a cannula water-trap housing including a moisture trap chamber having a moisture-collection cavity and a sampled-respiratory-gas pass-through cavity disposed higher than, and in fluid communication with, the moisture-collection cavity, wherein the sampled-respiratory-gas pass-through cavity has a smaller volume than the moisture-collection cavity, and wherein the sampled-respiratory-gas pass-through cavity has a sampled-respiratory-gas entrance and a sampled-respiratory-gas exit; and

b) a hydrophobic filter disposed to cover the exit of the sampled-respiratory-gas pass-through cavity, wherein all sampled respiratory gas entering the sampled-respiratory-gas pass-through cavity must pass through the hydrophobic filter to exit the sampled-respiratory-gas pass-through cavity and wherein moisture in the sampled respiratory gas collects in the moisture-collection cavity.