Sepsis monitor

• US 20080091088A1
• Filed: 05/15/2007
• Published: 04/17/2008
• Est. Priority Date: 05/15/2006
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Cercacor Laboratories
• Inventors: Kiani, Massi
• Granted Patent: US 7,941,199 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 2560/0276 Determining malfunction
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/02455 provided with high/low alarm devices
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: A61B 7/04 Electric stethoscopes microphones, acoustic transducers therefor H04R
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

Sensors are attached to a living being so as to generate corresponding sensor signals. A monitor is in communications with the sensors so as to derive physiological parameters responsive to the sensor signals. Predetermined limits are applied to the physiological parameters. At least one indicator responsive to the physiological parameters and the predetermined limits signal the onset of a sepsis condition in the living being.

Claims

1. A sepsis monitor comprising:

a plurality of sensors adapted to attach to a living being so as to generate a corresponding plurality of sensor signals;

a monitor in communications with the sensors so as to derive a plurality of physiological parameters responsive to the sensor signals;

a plurality of predetermined limits applied to the physiological parameters; and

at least one indicator responsive to the physiological parameters and the predetermined limits so as to signal the onset of a sepsis condition in the living being.

2. The sepsis monitor according to claim 1 further comprising:

a treatment device attached to the patient; and

a control in communications with the treatment device,

wherein the control is responsive to the physiological parameters and the predetermined limits so as to moderate treatment provided by the treatment device to the living being according to the sepsis condition.

3. The sepsis monitor according to claim 1 wherein the physiological parameters include at least two of respiration rate, pulse rate and temperature of the living being.

4. The sepsis monitor according to claim 1 wherein the physiological parameters include at least one of HbCO, HbMet and blood pressure.

5. The sepsis monitor according to claim 2 wherein the treatment device is a drug administration device intravenously connected to the living being so as to administer at least one drug to the patient in response to the control.

6. A sepsis monitoring method comprising:

identifying a plurality of physiological parameters indicative of an onset of a sepsis condition in a living being;

generating a plurality of sensor signals responsive to the physiological parameters;

computing the physiological parameters from the sensor signals;

applying a plurality of predetermined rules to the physiological parameters so as to determine the onset of the sepsis condition; and

indicating to an observer the potential existence and likely nonexistence of the sepsis condition.

7. The sepsis monitoring method according to claim 6 wherein the generating comprises optically sensing constituents of pulsatile blood within the living being and acoustically sensing tracheal sounds of the living being.

8. The sepsis monitoring method according to claim 7 wherein the computing comprises deriving at least a pulse rate and a respiration rate.

9. The sepsis monitoring method according to claim 8 wherein the applying comprises determining if the pulse rate and the respiration rate are greater than a plurality of predetermined limits.

10. The sepsis monitoring method according to claim 9 wherein the indicating comprises activating a first colored light to indicate nonexistence of a sepsis condition and a second colored light to indicate a potential existence of a sepsis condition.

11. The sepsis monitoring method according to claim 6 further comprising sending a control signal to a drug administration device intravenously in communications with the living being in response to the applying step so as to provide treatment for the sepsis condition.