# US 2014/0155713 A1 · Devices, Systems And Methods For Plethysmographic Monitoring At The Nose

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- Number: US 2014/0155713 A1
- Document ID: US20140155713A1
- Status: Published application
- Kind: A1
- Application number: 13/929,359
- Filed: 2013-06-27
- Published: 2014-06-05
- Earliest claimed: 2002-06-20
- Assignees: University of Florida Research Foundation, Inc.
- Inventors: Richard J. Melker; Brian S. Fuehrlein
- Web page: https://patentgrep.com/patent/US20140155713A1

## CPC

- A61B 5/0295: using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
- A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
- A61B 5/0261: {using optical means, e.g. infrared light}
- A61B 5/036: {by means introduced into body tracts (A61B5/032 and A61B5/035 take precedence)}
- A61B 5/0836: {Measuring rate of CO2 production}
- A61B 5/087: Measuring breath flow
- A61B 5/0873: {using optical means}
- A61B 5/14551: {for measuring blood gases}
- A61B 5/14552: {Details of sensors specially adapted therefor}
- A61B 5/4818: {Sleep apnoea}
- A61B 5/4836: {Diagnosis combined with treatment in closed-loop systems or methods (A61B5/0036 takes precedence)}
- A61B 5/6819: {Nose}
- A61B 5/682: {Mouth, e.g., oral cavity; tongue; Lips; Teeth}
- A61B 5/6826: {Finger}
- A61B 5/6829: {Foot or ankle}
- A61B 5/7278: {Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals}
- A61B 5/7282: {Event detection, e.g. detecting unique waveforms indicative of a medical condition (cough events A61B5/0823; seizures A61B5/4094; sleep apnoea A61B5/4818)}
- A61M 16/0003: {Accessories therefor, e.g. sensors, vibrators, negative pressure}
- A61M 16/0051: {with alarm devices}
- A61M 16/0057: {Pumps therefor}
- A61M 16/021: {operated by electrical means (A61M16/202 – A61M16/205 take precedence)}
- A61M 16/0666: {Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02)}
- A61M 16/0672: {Nasal cannula assemblies for oxygen therapy}
- A61M 16/08: Bellows; Connecting tubes {(having means for taking samples G01N1/22); Water traps; Patient circuits}
- A61M 16/085: {Gas sampling}
- A61M 16/20: Valves specially adapted to medical respiratory devices
- A61B 5/02416: {using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence)}
- A61B 5/02427: {Details of sensor}
- A61B 5/0816: {Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00)}
- A61B 2560/0276: Determining malfunction
- A61B 2562/247: Hygienic covers, i.e. for covering the sensor or apparatus during use
- A61M 2202/0208: Oxygen
- A61M 2202/03: Gases in liquid phase, e.g. cryogenic liquids
- A61M 2205/3561: local, e.g. within room or hospital
- A61M 2205/3569: sublocal, e.g. between console and disposable
- A61M 2210/0618: Nose
- A61M 2210/0625: Mouth
- A61M 2210/0662: Ears
- A61M 2230/06: Heartbeat rate only
- A61M 2230/205: partial oxygen pressure (P-O2)
- A61M 2230/30: Blood pressure (A61M2230/04 takes precedence)
- A61M 2230/42: Rate
- A61M 2230/432: partial CO2 pressure (P-CO2)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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

The present invention relates to optimized gas supply utilizing photoplethysmography. Flow rate, pressure or amount of gas is adjusted as a function of blood oxygen saturation data, photoplethysmography signals, or both, obtained from the pulse oximeter probe.

## Claims

### Claim 1

A device configured to secure to a nose that comprises: 1) a pulse oximetry probe; and 2) another sensor for monitoring at the nose.

### Claim 2 (depends on 1)

The device of claim 1, wherein the other sensor for monitoring at the nose detects air flow, air pressure, or both.

### Claim 3 (depends on 1)

The device of claim 1, further comprising a sampling structure to direct exhaled gas to a capnometer, a capnograph, or both.

### Claim 4

(canceled)

### Claim 5 (depends on 1)

The device of claim 1, further comprising a cannula integrally combined with the device.

### Claim 6

(canceled)

### Claim 7

(canceled)

### Claim 8

A system for monitoring an individual, comprising: a device configured to secure to a nose that comprises: 1) a pulse oximetry probe; and 2) another sensor for monitoring at the nose.

### Claim 9 (depends on 8)

The system of claim 8, wherein the system is configured to analyze data from the pulse oximeter with data from the other sensor for monitoring at the nose.

### Claim 10 (depends on 8)

The system of claim 8, wherein the other sensor for monitoring at the nose detects air flow, air pressure, or both.

### Claim 11 (depends on 10)

The system of claim 10, wherein the system is configured to analyze data from the pulse oximeter with data from the sensor that detects air flow, air pressure, or both.

### Claim 12 (depends on 8)

The system of claim 8, further comprising a supply of oxygen or oxygen-rich gas.

### Claim 13 (depends on 12)

The system of claim 12, wherein the supply of oxygen or oxygen-rich gas comprises a cannula that is integrally combined with the device.

### Claim 14 (depends on 12)

The system of claim 12, wherein the system is configured to increase or decrease the supply of oxygen or oxygen-rich gas to the individual based on data from the device.

### Claim 15 (depends on 8)

The system of claim 8, wherein the system is configured to determine respiratory rate.

### Claim 16 (depends on 8)

The system of claim 8, wherein the system is configured to evaluate changes in the envelope of a photoplethymograph from the pulse oximetry probe.

### Claim 17

(canceled)

### Claim 18 (depends on 8)

The system of claim 8, wherein the system is configured to monitor data from the device to analyze the individual for a sleep disorder.

### Claim 19

(canceled)

### Claim 20 (depends on 8)

The system of claim 8, further comprising a sampling device for capnometry.

### Claim 21

A method of monitoring an individual, comprising:
(a) securing onto the individual a device configured to secure to a nose that comprises: 1) a pulse oximetry probe; and 2) another sensor for monitoring at the nose;
(b) collecting data from the pulse oximeter probe and the other sensor for monitoring at the nose; and
(c) analyzing with a processor the data from the pulse oximeter probe and the other sensor.

### Claim 22 (depends on 21)

The method of claim 21, wherein the data is analyzed to monitor respiration of the individual.

### Claim 23

(canceled)

### Claim 24

(canceled)

### Claim 25 (depends on 21)

The method of claim 21, wherein the other sensor for monitoring at the nose detects air flow, air pressure, or both.

### Claim 26

(canceled)

### Claim 27

(canceled)

### Claim 28 (depends on 21)

The method of claim 21, further comprising sampling breath of the individual and obtaining end tidal carbon dioxide measurements.

### Claim 29 (depends on 21)

The method of claim 21, further comprising (d) increasing or decreasing a supply of oxygen to the individual based on the analysis of the data from the pulse oximeter probe and the other sensor.