Capnometry system for use with a medical effector system

• US 20060042635A1
• Filed: 06/21/2005
• Published: 03/02/2006
• Est. Priority Date: 08/31/2004
• Status: Active Grant

• Current Assignee: Scott Laboratories, Inc.
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Donofrio, William T., Burdorff, Mark A., Martin, James F., Nalagatla, Anil K., Niklewski, Paul J., Eyster, Curt R., Cobb, Nicholas E., Adair, William P.
• Granted Patent: US 8,146,591 B2
• 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
• 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 capnometry apparatus for receiving respiratory gas from a respiratory cannula positioned on a patient. An integrated host controller alerts a user if the capnometry apparatus is connected or not connected to the respiratory cannula based in part on a signal output from a capnometer located in the capnometry apparatus. The host controller also includes the functionality to shut off the capnometer pump with or without a time delay when the capnometer signal output indicates the capnometer pump is not connected to the cannula. An ambient-air pressure sensor located in the capnometry apparatus alerts the host controller if the capnometry apparatus has been moved to a new location with a substantially different altitude than the first location, in which case the host controller will issue an alert to a user prompting a calibration of the capnometry apparatus.

Claims

1. A medical-effector-system procedure room unit comprising:

a) a procedure-room-unit host controller; and

b) a capnometer having a capnometer gas input which receives directly or indirectly respiratory gas obtained from a cannula which is disposable on the face of a patient and having a capnometer signal output operatively connected to the procedure-room-unit host controller, wherein the procedure-room-unit host controller issues a user alert that the capnometer is fluidly connected and/or not fluidly connected to the cannula based at least in part on the capnometer signal output of the capnometer.

2. The medical-effector-system procedure room unit of claim 1, wherein the capnometer input receives indirectly respiratory gas obtained from the cannula through an intervening bedside monitoring unit which is attachable to the cannula and attached or attachable to a first end of an umbilical cable having a second end attached or attachable to the procedure room unit, and wherein at least one of the first and second ends is detachable from the corresponding bedside monitoring unit or the procedure room unit.

3. A medical-effector-system procedure room unit comprising a medical-effector-system procedure-room-unit console having a console fan and a capnometer subassembly, wherein the console fan moves air into, through, and out of the procedure-room-unit console, wherein the capnometer subassembly has a capnometer-subassembly gas inlet and a capnometer-subassembly gas outlet, and wherein the capnometer-subassembly gas outlet is disposed to enable gas leaving the capnometer-subassembly gas outlet to be entrained with air moved by the console fan.

4. The medical-effector-delivery-system procedure room unit of claim 3, wherein the capnometer subassembly has a capnometer and a capnometer pump operatively connected to the capnometer.

5. A medical effector system comprising:

a) the medical-effector-system procedure room unit of claim 3;

b) a bedside monitoring unit; and

c) an umbilical cable having a first end attached or attachable to the bedside monitoring unit and having a second end attached or attachable to the procedure room unit, wherein at least one of the first and second ends is detachable from the corresponding bedside monitoring unit or the procedure room unit.

6. A medical-effector-system procedure room unit comprising:

a) a procedure-room-unit host controller;

b) a capnometer having a capnometer gas input which receives directly or indirectly respiratory gas obtained from a cannula which is disposable on the face of a patient and having a capnometer signal output operatively connected to the procedure-room-unit host controller;

c) an oxygen manifold having an oxygen-delivery flow path including in series a flow-path inlet fluidly-connectable to a source of pressurized oxygen, a flow restrictor, and a flow-path outlet fluidly-connectable to the cannula; and

d) a low side pressure sensor in fluid communication with the flow-path outlet, disposed downstream of any oxygen-manifold flow restrictor, and having a low-side pressure signal output operatively connected to the procedure-room-unit host controller, wherein the procedure-room-unit host controller issues a user alert that the capnometer is fluidly connected and/or not fluidly connected to the cannula based at least in part on the capnometer signal output of the capnometer and the low-side pressure signal output of the low side pressure sensor.

7. The medical-effector-system procedure room unit of claim 6, wherein the capnometer input receives indirectly respiratory gas obtained from the cannula through an intervening bedside monitoring unit which is attachable to the cannula and attached or attachable to a first end of an umbilical cable having a second end attached or attachable to the procedure room unit, wherein the flow-path outlet of the oxygen manifold is indirectly fluidly-connected to the cannula through the bedside monitoring unit and the umbilical cable, and wherein at least one of the first and second ends is detachable from the corresponding bedside monitoring unit or the procedure room unit.

8. A medical-effector-system procedure room unit comprising:

a) a procedure-room-unit host controller;

b) a capnometer having a capnometer gas input which receives directly or indirectly respiratory gas obtained from a cannula which is disposable on the face of a patient and having a capnometer signal output operatively connected to the procedure-room-unit host controller; and

c) a capnometer pump operatively connected to the capnometer and controlled by the procedure-room-unit host controller, wherein the procedure-room-unit host controller determines that the capnometer is fluidly connected and/or not fluidly connected to the cannula based at least in part on the capnometer signal output of the capnometer, and wherein the procedure-room-unit host controller shuts off, with or without a time delay, the capnometer pump when the capnometer is not fluidly connected to the cannula.

9. The medical-effector-system procedure room unit of claim 8, wherein the capnometer input receives indirectly respiratory gas obtained from the cannula through an intervening bedside monitoring unit which is attachable to the cannula and attached or attachable to a first end of an umbilical cable having a second end attached or attachable to the procedure room unit, and wherein at least one of the first and second ends is detachable from the corresponding bedside monitoring unit or the procedure room unit.

10. A medical-effector-system procedure room unit comprising:

a) a procedure-room-unit host controller;

b) a capnometer having a capnometer gas input which receives directly or indirectly respiratory gas obtained from a cannula which is disposable on the face of a patient and having a capnometer signal output operatively connected to the procedure-room-unit host controller; and

c) an ambient-air pressure sensor having an ambient-air-pressure-sensor signal output operatively connected to the procedure-room-unit host controller;

wherein the procedure-room-unit host controller determines if the medical-effector-system procedure room unit has been moved to a new location having an altitude difference greater than a predetermined altitude difference using at least the ambient-air-pressure-sensor signal output of the ambient-air pressure sensor, and wherein the procedure-room-unit host controller issues a capnometer-calibration user alert when the medical-effector-system procedure room unit has been moved to a new location having an altitude difference greater than the predetermined altitude difference.

11. The medical-effector-system procedure room unit of claim 10, wherein the capnometer input receives indirectly respiratory gas obtained from the cannula through an intervening bedside monitoring unit which is attachable to the cannula and attached or attachable to a first end of an umbilical cable having a second end attached or attachable to the procedure room unit, and wherein at least one of the first and second ends is detachable from the corresponding bedside monitoring unit or the procedure room unit.

12. A medical-effector-system procedure room unit comprising:

a) a procedure-room-unit host controller;

b) a cannula disposable on the face of a patient and having a respiratory-gas-sample output operatively connectable to the procedure-room-unit host controller; and

c) an oxygen manifold having a flow-path outlet fluidly-connectable to the cannula and having a variable-size-orifice flow restrictor operatively connected to, and disposed upstream of, the flow-path outlet, wherein the procedure-room-unit host controller determines when the patient is first breathing with a disposed cannula based at least on the respiratory-gas-sample output of the cannula and opens the variable-size-orifice flow restrictor when the patient is first determined to be breathing with a disposed cannula.

13. The medical-effector-system procedure room unit of claim 12, wherein the respiratory-gas-sample output of the cannula is operatively connected to the procedure-room-unit host controller via a pressure transducer and/or through a capnometer.

14. The medical-effector-system procedure room unit of claim 12, wherein the variable-size-orifice flow restrictor is a variable-size-orifice solenoid.