PATIENT TEMPERATURE RESPONSE CONTROL SYSTEM AND METHOD

• US 20160008166A1
• Filed: 09/24/2015
• Published: 01/14/2016
• Est. Priority Date: 11/16/2007
• Status: Active Grant

• Current Assignee: Medivance Incorporated (Becton, Dickinson & Co)
• Original Assignee: Medivance Incorporated (Becton, Dickinson & Co)
• Inventors: Voorhees, Marc, Carson, Gary A., Gruszecki, Gary
• Granted Patent: US 9,763,823 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 34/25 User interfaces for surgical systems
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/1101 Detecting tremor
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4035 Evaluating the autonomic nervous system
• CPC Class Codes: A61B 5/6814 Head
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A61B 5/6828 Leg
• CPC Class Codes: A61B 5/68335 including release sheets or liners
• CPC Class Codes: A61B 5/7435 Displaying user selection data, e.g. icons in a graphical user interface
• CPC Class Codes: A61F 2007/0056 for cooling
• CPC Class Codes: A61F 2007/0093 programmed
• CPC Class Codes: A61F 7/0097 Blankets with active heating or cooling sources warming mats A61F7/08
• CPC Class Codes: A61F 7/02 Compresses or poultices for effecting heating or cooling

Abstract

A system and method are provided that employ a monitoring device to monitor at least one patient physiological response to a change in temperature of the patient (e.g. pursuant to induced hypothermia therapy), wherein a monitoring signal is provided by the monitoring device. In turn, an output (e.g. a visual and/or auditory output) may be provided to a user indicative of at least one measure of patient response to the change in temperature. Alternatively or additionally, a processor may be provided to process the monitoring signal and provide an output employable by medical personnel to control a patient shivering response to the patient temperature change. Such information may comprise information regarding one or more anti-shivering medicament(s), e.g. corresponding dosage and/or frequency information for use by medical personnel in the administration of the anti-shivering medicament. In one approach, a motion sensor may be selectively attached to a patient'"'"'s chin to provide a wireless monitoring signal to a transceiver. In turn, the transceiver may provide the monitoring signal to the processor on an ongoing basis to output information useful in the administration of an anti-shivering medicament, including updated information that takes into account a patient'"'"'s response to a prior administration of one or more medicaments in conjunction with the subsequent administration of an anti-shivering medicament.

Claims

1-50. -50. (canceled)

51. A system for use in a patient cooling therapy procedure, comprising:

a monitoring device for monitoring patient shivering and for providing a monitoring signal responsive thereto, wherein the monitoring device is selectively interconnectable to and disconnectable from a patient, and wherein the monitoring device is maintainable in fixed relation to a patient upon interconnection;

a control unit for cooling and circulating a fluid through at least one contact pad for thermal exchange with a patient;

at least one processor programmed to;

control automatically a temperature of the circulated fluid so as to adjust a temperature of a patient during at least a portion of a patient cooling therapy procedure; and

,

process said monitoring signal to provide an output control signal indicative of a magnitude of patient shivering;

a user interface to graphically display, on an ongoing basis as a function of time during a patient cooling therapy procedure, each of the following;

a predetermined patient temperature adjustment rate plot indicating a desired patient temperature to be reached as a function of time;

a measured patient temperature plot indicating a measured patient temperature as a function of time; and

,

patient motion data, responsive to said output control signal, indicating a magnitude of patient shivering, as a function of time.

52. A system as recited in claim 51, wherein said user interface displays said patient motion data in relation to a predetermined magnitude scale having a plurality of predetermined levels of patient motion indicative of increasing degrees of patient shivering.

53. A system as recited in claim 52, wherein said user interface graphically displays, on an ongoing basis as a function of time during a patient cooling therapy procedure, a measured circulated fluid temperature plot indicating a measured temperature of said circulated fluid as a function of time.

54. A system as recited in claim 53, wherein said user interface provides a screen that includes:

a graphic display portion that graphically displays said predetermined patient temperature adjustment rate plot, said measured patient temperature plot, and said measured circulated fluid temperature plot in a first region of the graphic display portion, relative to a temperature scale and time scale.

55. A system as recited in claim 54, wherein said graphic display portion graphically displays said patient motion data in a second region of the graphic display portion, relative to said time scale.

56. A system as recited in claim 51, wherein said at least one processor is programmed to:

control automatically a temperature of the circulated fluid so as to cool and warm a patient in different treatment phases in accordance with a predetermined and controllable protocol.

57. A system as recited in claim 51, wherein said monitoring device comprises:

a three-dimensional accelerometer for providing said monitoring signal, wherein said monitoring signal is indicative of acceleration in each of three dimensions as a function of time.

58. A system as recited in claim 57, wherein said at least one processor is programmed to:

process said monitoring signal utilizing frequency domain processing.

59. A system as recited in claim 58, wherein said monitoring signal comprises:

a stream of sequential sample data sets, wherein each data set comprises data corresponding with a measured magnitude related to acceleration in each of said three dimensions.

60. A system as recited in claim 59, wherein said at least one processor is programmed to:

process a plurality of frames of said data sets on an ongoing basis, wherein each frame comprises a plurality of data sets, and wherein sequential ones of said plurality of frames are partially overlapping and partially non-overlapping.

61. A system as recited in claim 60, wherein for each frame of said plurality of frames said at least one processor is programmed to:

de-interleave said frame to obtain three data portions corresponding with each of said three dimensions;

window said three data portions; and

,

transform the three windowed data portions to obtain three corresponding frequency domain data portions.

62. A system as recited in claim 61, wherein for each frame of said plurality of frames said at least one processor is programmed to:

utilize the three corresponding frequency domain data portions to obtain a corresponding spectral output.

63. A system as recited in claim 62, wherein for said plurality of frames the at least one processor is programmed to:

analyze the spectral output corresponding with the plurality of frames in relation to a plurality of frequency bands to detect said magnitude of patient shivering.

64. A system as recited in claim 63, wherein said plurality of frequency bands includes at least a predetermined first frequency band and a different, predetermined second frequency band, wherein only one of said predetermined first frequency band and said predetermined second frequency band includes a frequency of 9.5 Hz.

65. A system as recited in claim 63, wherein said plurality of frequency bands includes at least three non-overlapping frequency bands, only one of which includes a frequency of 9.5 Hz.

66. A system as recited in claim 57, wherein said at least one processor is programmed to:

process said monitoring signal utilizing time domain processing.

67. A system as recited in claim 51, further comprising:

at least one of an energy storage device and a wireless energy conversion device, interconnected to said monitoring device for direct co-movement therewith, for powering said monitoring device free from hardwire interconnection with a power source.

68. A system as recited in claim 67, wherein said at least one of an energy storage device and a wireless energy conversion device being one of directly connected to said monitoring device and interconnected to a common support member together with said monitoring device for co-movement therewith.

69. A system as recited in claim 67, further comprising:

a transmitter for transmission of a wireless signal corresponding with said monitoring signal, wherein said transmitter is interconnected to said monitoring device for co-movement therewith.

70. A system as recited in claim 51, wherein said processor is operable to:

employ said monitoring signal to generate an input for use in controlling the temperature of the circulated fluid.