Apparatus for delivering oxygen to a patient undergoing a medical procedure

• US 20060042638A1
• Filed: 06/21/2005
• Published: 03/02/2006
• Est. Priority Date: 08/31/2004
• Status: Abandoned Application

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Donofrio, William T., Martin, James F., Nalagatla, Anil K., Niklewski, Paul J., Derouen, Jason P., Eyster, Curt R., Wuennemann, Jeffery J., Liles, Jeff S.
• Application Number:
  US11/158,263
• Publication Number:
  US 20060042638A1
• Time in Patent Office: Days
• US Class Current: 128/207.180
• 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 see also A61M19/00
• 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 an oxygen delivery apparatus constructed from an oxygen delivery manifold, a respiratory cannula, and a host controller. The host controller contains an oxygen delivery program and accepts a respiration input regarding whether the patient is inhaling or exhaling, and whether the patient is breathing orally or nasally. The oxygen delivery program regulates the flow rate of oxygen based in part upon the respiration input provided. A first rates is used when the patient is inhaling and exhaling orally, a second rate is used when the patient is inhaling nasally, and a third rate is used when the patient is exhaling nasally.

Claims

1. Medical oxygen-delivery apparatus comprising an oxygen-delivery manifold having an oxygen-delivery flow path, a fixed-size-orifice flow restrictor, and a variable-size-orifice flow restrictor, wherein the oxygen-delivery flow path includes a flow-path inlet fluidly-connectable to a source of pressurized oxygen and a flow-path outlet fluidly-connectable to a cannula disposable on the face of a patient, wherein the fixed-size-orifice flow restrictor is disposed in the flow path downstream of the flow-path inlet, and wherein the variable-size-orifice flow restrictor is disposed in the flow path downstream of the fixed-size-orifice flow restrictor.

2. The medical oxygen-delivery apparatus of claim 1, also including a high side pressure sensor in fluid communication with the flow path at a first location disposed between the flow-path inlet and the fixed-size-orifice flow restrictor and including a differential pressure sensor in fluid communication with the flow path at an entrance location disposed between the first location and the fixed-size-orifice flow restrictor and at an exit location disposed between the fixed-size-orifice flow restrictor and the variable-size-orifice flow restrictor.

3. The medical oxygen-delivery apparatus of claim 2, wherein the variable-size-orifice flow restrictor is a variable-size-orifice solenoid.

4. The medical oxygen-delivery apparatus of claim 1, wherein the oxygen-delivery manifold is a subassembly of a procedure room unit of a medical effector system.

5. A medical-effector-system procedure room unit comprising a procedure-room-unit host controller which contains an oxygen delivery program which performs the steps of:

controlling the delivery of oxygen at a predetermined continuous first rate to at least one respiratory-gas-delivery oral prong of a cannula assembly operatively connected to a patient, when the patient is determined to be inhaling and exhaling through the mouth;

controlling the delivery of oxygen at a predetermined second rate to at least one respiratory-gas-delivery nasal prong of the cannula assembly when the patient is determined to be breathing through the nose and when the patient is determined to be inhaling; and

controlling the delivery of oxygen at a predetermined third rate to the at-least-one respiratory-gas-delivery nasal prong when the patient is determined to be breathing through the nose and when the patient is determined to be exhaling, wherein the second rate is higher than the third rate.

6. The medical-effector-system procedure room unit of claim 5, wherein the oxygen delivery program also performs the steps of determining that the patient is breathing through the nose or the mouth and, if through the nose, that the patient is inhaling or exhaling based at least in part on nasal pressure readings from sampled respiratory gas taken from at least one respiratory-gas-sampling nasal prong of the cannula assembly.

7. Medical oxygen-delivery apparatus comprising an oxygen-delivery manifold having an oxygen-delivery flow path and an oxygen-sampling flow path fluidly-connectable to the oxygen-delivery flow path, wherein the oxygen-delivery flow path includes a flow-path inlet fluidly-connectable to a source of pressurized oxygen and a flow-path outlet fluidly-connectable to a cannula disposable on the face of a patient, and wherein the oxygen-sampling flow path includes an oxygen sensor which detects hypoxic gas.

8. The medical oxygen-delivery apparatus of claim 7, wherein the oxygen-delivery manifold is a subassembly of a procedure room unit of a medical effector system.