US2017046943A1PendingUtilityA1
System, device, and method for measurement of hand hygiene technique
Individually held — no corporate assignee on recordPriority: Jun 22, 2015Filed: Oct 28, 2016Published: Feb 16, 2017
Est. expiryJun 22, 2035(~8.9 yrs left)· nominal 20-yr term from priority
Inventors:Peter D. Haaland
G08B 21/245G01P 15/18A61B 90/80
51
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A device, system, and method for evaluating compliance with a hand hygiene standard using acceleration measurements of the hand or wrist. The method is based on the scalar quantities vigor and/or rocking angle.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A device for monitoring hand hygiene, the device comprising:
a housing configured to be worn on a user's wrist, the housing including an accelerometer configured to measure acceleration of the user's wrist along three axes of motion; and a processing unit in communication with the accelerometer and configured to
receive a plurality of the acceleration measurements taken over a period of time during a hand hygiene event carried out by the user,
determine vigor values from the plurality of acceleration measurements,
compare the vigor values to a vigor threshold based on a hand hygiene standard,
determine if one or more of the vigor values meets the vigor threshold, and
alert the user to a result of the comparison of the vigor values to the vigor threshold.
2 . The device of claim 1 , wherein the processing unit is further configured to alert the user if the vigor threshold is not satisfied.
3 . The device of claim 2 , further comprising a motor coupled to the housing, and wherein the alert to the user is a vibration provided by the motor.
4 . The device of claim 1 , further comprising a motor coupled to the housing, and wherein the alert to the user is a vibration provided by the motor.
5 . The device of claim 1 , wherein the hand hygiene standard is the World Health Organization's consensus standard for hand hygiene.
6 . The device of claim 1 , wherein the processing unit is further configured to alert the user if the vigor threshold is satisfied.
7 . The device of claim 1 , further comprising a RFID transceiver configured to read a RFID signal generated by a RFID tag affixed to a sanitizer station or a soap station.
8 . The device of claim 1 , wherein vigor is determined by calculating
v
(
t
)
=
∫
0
t
a
->
t
t
.
9 . The device of claim 1 , wherein the vigor threshold is based on the user.
10 . A device for monitoring hand hygiene, the device comprising:
a housing configured to be worn on a user's wrist, the housing including an accelerometer configured to measure acceleration of the user's wrist along three axes of motion; and a processing unit in communication with the accelerometer and configured to
receive a plurality of the acceleration measurements taken over a period of time during a hand hygiene event carried out by the user,
determine rocking angle values from the plurality of acceleration values,
compare the rocking angle values to a rocking angle threshold based on a hand hygiene standard,
determine if one or more of the rocking angle values meets the rocking angle threshold, and
alert the user to a result of the comparison of the rocking angle values to the rocking angle threshold.
11 . The device of claim 10 , wherein the processing unit is further configured to alert the user if the rocking angle threshold is not satisfied.
12 . The device of claim 11 , further comprising a motor coupled to the housing, and wherein the alert to the user is a vibration provided by the motor.
13 . The device of claim 10 , further comprising a motor coupled to the housing, and wherein the alert to the user is a vibration provided by the motor.
14 . The device of claim 10 , wherein the hand hygiene standard is the World Health Organization's consensus standard for hand hygiene.
15 . The device of claim 10 , wherein the processing unit is further configured to alert the user if the rocking angle threshold is satisfied.
16 . The device of claim 10 , further comprising a RFID transceiver configured to read a RFID signal generated by a RFID tag affixed to a sanitizer station or a soap station.
17 . The device of claim 10 , wherein rocking angle is determined by calculating
r
(
t
)
=
cos
-
1
(
a
(
t
)
→
a
(
t
)
→
·
〈
a
(
t
)
→
a
(
t
)
→
〉
)
.
18 . The device of claim 10 , wherein the rocking angle threshold is based on the user.
19 . A system for monitoring hand hygiene, the system comprising:
a plurality of hand hygiene stations, each station including a RFID tag having a unique identification; a device worn on a user's wrist, the device including a RFID tag reader and an accelerometer; and a computer processor configured to
receive acceleration data from the device associated with a hand hygiene event at one of the hand hygiene stations,
determine vigor values or rocking angle values associated with the user's hand hygiene event from the acceleration data,
determine if the vigor values or the rocking angle values associated with the hand hygiene event satisfies a standard for hand hygiene technique,
transmit a first notification to the user if the hand hygiene event satisfies the standard, and
transmit a second notification to the user if the hand hygiene event does not satisfy the standard.
20 . The system of claim 19 , wherein the hand hygiene event satisfies the standard for hand hygiene if a sampling of the vigor values satisfies a threshold or if a sampling of the rocking angle values satisfies a threshold.
21 . A method of evaluating compliance with a hygiene standard, the method comprising:
measuring acceleration with an accelerometer applied to one or more of hands, wrists, or forearms during events that comply with the standard; measuring acceleration with an accelerometer applied to one or one or more of hands, wrists, or forearms during events that do not comply with the standard; determining at least one vigor value for compliant events; determining at least one vigor value for non-compliant events; and comparing at least one of the vigor values for compliant events and vigor values for non-compliant events to establish whether compliance is achieved in subsequent events.
22 . The method of claim 21 wherein the standard is the World Health Organization's consensus standard for hand hygiene technique.
23 . The method of claim 21 further comprising establishing a vigor threshold for compliant events.
24 . A method of evaluating compliance with a hygiene standard, the method comprising:
measuring acceleration with an accelerometer applied to one or more of hands, wrists, or forearms during events that comply with the standard; measuring acceleration with an accelerometer applied to one or one or more of hands, wrists, or forearms during events that do not comply with the standard; determining at least one rocking angle value for compliant events; determining at least one rocking angle value for non-compliant events; and comparing at least one of the rocking angle values for compliant events and rocking angle values for non-compliant events to establish whether compliance is achieved in subsequent events.
25 . The method of claim 24 wherein the standard is the World Health Organization's consensus standard for hand hygiene technique.
26 . The method of claim 24 further comprising establishing a rocking angle threshold for compliant events.Join the waitlist — get patent alerts
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