WO2010015968A1 - Patient monitoring system - Google Patents

Patient monitoring system Download PDF

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Publication number
WO2010015968A1
WO2010015968A1 PCT/IB2009/053296 IB2009053296W WO2010015968A1 WO 2010015968 A1 WO2010015968 A1 WO 2010015968A1 IB 2009053296 W IB2009053296 W IB 2009053296W WO 2010015968 A1 WO2010015968 A1 WO 2010015968A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
monitoring system
detector
patient monitoring
worn
Prior art date
Application number
PCT/IB2009/053296
Other languages
French (fr)
Inventor
Privender K. Saini
Annick Timmermans
Richard D. Willmann
Juergen Te Vrugt
Stefan Winter
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N. V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N. V. filed Critical Philips Intellectual Property & Standards Gmbh
Publication of WO2010015968A1 publication Critical patent/WO2010015968A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms

Definitions

  • the invention relates to the field of patient monitoring systems, and especially to ubiquitous tracking and cueing of a patient's daily tasks.
  • Stroke is a major cause of death and disability in the USA and other western countries. Neurological impairments after stoke leave 80 % of patients with unilateral sensory-motor deficits. These impairments are often lasting and lead to severe problems in performing daily activities like eating, walking, and washing. Rehabilitation exercises have proven to be efficient in regaining motor control, and skills provided the training is intense and the patient is properly guided in the therapy. This guiding and supervising typically happens in a rehabilitation clinic with face-to-face hands-on therapy from a therapist.
  • rehabilitation specialists One of the things mentioned by rehabilitation specialists as being a major factor in recovery is motivation. After the initial period of intensive therapy with a therapist, the patient is discharged from the rehabilitation program to continue training and exercising at home. This continued training is often unsupervised and patient- initiated, thus failures of compliance to exercise regimes occur widely.
  • patients do not want to perform rehabilitation exercises at home. Rather, they would like to go back to their old life where they were simply able to perform the necessary things during the day. Patients want to be independent and skilled at every-day tasks like being able to eat, make and drink coffee, tie their own shoelaces, brush their teeth, and go to the supermarket for some groceries. Being able to do these things again properly is something that would motivate them to practice these. In addition to being able to practice activities of daily living, patients would like to see how they are doing and how they are progressing. Further, as time goes by, and patients tend to diminish slowly their use of the affected limb, they lose the skill level they had after intensive therapy.
  • a patient monitoring system comprising: at least one patient detector which is adapted for detecting that the patient is in the proximity of a predefined position, and at least one indicator element worn by the patient which is controllable for providing an indication to the patient, wherein the indication is provided to the patient when the patient detector has detected that the patient is in the proximity of the predefined position.
  • the invention proposes a way of feedback that is easy to interpret and gives the patient the information he needs to correctly interpret progress and be motivated by it.
  • the invention it is possible to trigger limb movements in predefined situations, i.e. when the patient approaches a special site, like the bathroom or the kitchen.
  • a special limb can be explicitly triggered and, thus, it does not lie in the patient's response any more to use his affected limb.
  • the patient is taken out of his automatic response mode of using the other limb.
  • the invention encourages use of the affected limb rather than the more automatic response of using the healthy limb.
  • a plurality of predefined positions is provided which can be detected by the patient detector and which trigger the indicator element to provide an indication to the patient.
  • Such predefined positions are preferably provided in a patient's home, in a rehabilitation clinic and/or hospital area. In this way, it is possible to trigger indications to the patient in multiple situations in which a limb, especially an affected limb, should be used by the patient.
  • position is to be understood to mean any location that may be approached by the patient.
  • the patient detector can be designed in different ways, e. g. a proximity sensor can be used for detecting that the patient is in the proximity of a predefined position.
  • the patient detector comprises a wearable detector device worn by the patient and at least one stationary detector device which is provided at a fixed location.
  • the patient detector comprises two types of devices, i. e. typically a single wearable detector device worn by the patient and typically multiple stationary detector devices which are attached to objects, like doors, walls and other objects of daily use.
  • the variable detector device is a RFID reader and the stationary detector device is a passive RFID transponder.
  • the use of RFID devices i. e. a RFID reader and one or preferably more passive RFID transponders, triggering an indication to the patient becomes more specific and controllable in a reliable way. Further, it is especially preferred that the wearable detector is battery powered.
  • the indicator element might be adapted for providing the patient with an indication in different ways, e. g. by an optical and/or an acoustical signal.
  • the indicator element comprises a vibration device.
  • the indicator element is worn on a limb of the patient, preferably on an arm of the patient, most preferably on a wrist.
  • multiple indicator elements are provided, most preferable two indicator elements, each being worn on one wrist of the patient, respectively.
  • it can be controlled which arm, i. e. the affected or the non-affected arm, is to be used in a special situation, i. e. approaching a special position, room or household device.
  • At least one motion sensor is provided which is worn by the patient and which is adapted for monitoring the patient's movements. Further, with respect to this, according to a preferred embodiment of the invention the motion sensor is adapted for monitoring the movement of a limb of the patient, preferably of a patient's arm. Furthermore, it is especially preferred that the motion sensor is integrated into the indicator element while a motion sensor which is separate from the indicator element can be used, too.
  • a plurality of motion sensors is provided, e. g. two motion sensors, each one worn on a wrist of the patient, respectively.
  • the motion data monitored by the motion sensor can be used and distributed in different ways.
  • a storage device is provided which is worn by the patient and which is adapted for storing the movements monitored by the motion sensor. If multiple motion sensors are provided, the storage device is provided for separately storing the movement data from each of these motion sensors, respectively.
  • wireless data transmission is provided between the motion sensor and an external analysis device.
  • an external analysis device is preferably a computer on which an analysis software is run.
  • data transmission is provided between the patient detector and the motion sensor.
  • data transmission in general, can be based on a wired connection.
  • wireless data transmission is provided between the patient detector and the motion sensor. This gives the patient more freedom for moving in a natural way though wearing device for the patient detector and the at least one motion sensor.
  • wireless data transmission is provided between the patient detector and the indicator element. This also serves for the possibility of the natural movement of the patient though wearing one or more indicator elements.
  • Passive RFID transponders 1 are provided in form of stickers that are placed on objects in the patient's surroundings.
  • a RFID reader 3 is used that is battery powered and worn by the patient, e.g. as a box 7 on the belt 8.
  • the patient wears two vibration devices 4, i.e. one vibration device 4 on each wrist, wherein these vibration devices 4 are each combined with a motion sensor 5, such as a 3D accelerometer.
  • a radio is provided that connects the RFID reader 3 on the belt 8 with the vibration devices 4 and the motion sensors 5 on the wrists.
  • the vibrations devices 4 and the motion sensors 5 contain sensor boards 9 and a receiver element 10 which is integrated in the box 7 on the belt 8.
  • a storage device 6 for storing motion sensor data is provided which is also integrated in the box 7 on the belt 8.
  • wireless data transmission 11 is provided for transmitting the motion data stored in the box 7 on the belt 8 to a PC as an external analysis device running data analysis software.
  • One application is in the rehabilitation clinic/hospital area, and the other a home-based application.
  • Accelerometers worn on e.g. the wrists can be used to monitor the ratio of the amount of use of the affected vs. healthy arm of patients. However, monitoring alone will not be sufficient to change the patterns of daily use of limbs by patients.
  • RFID tags it is possible to give context specific triggers to the affected limb.
  • the triggers are simple vibrations for the purpose of reminding the patient to use the affected limb since due to compensation, patients often forget to use. These triggers that appear at the right time and the right place are very potent to get patients to use the affected limb.
  • Recognition of certain tasks and activities done by patients is ideal for triggering the limb, but simple tags that are placed strategically at spots in the house where defined activities take place, for example the stove, the washing table, and the fridge, are excellent alternatives.
  • tags that can be placed within the home the same tags can be placed at the rehabilitation site. In this case, the patient is preferably recognized upon entering the site, and tags at strategic places, e.g. in the bathroom, in the building remind the patient to use
  • the functionality of the tags around the house is simple; objects are tagged with passive RFID transponders that can be attached as stickers and have very low costs.
  • a battery-powered RFID reader that is worn on the patient's body, tagged objects in the direct vicinity of the user are detected and identified by a unique ID.
  • the RFID reader receives a signal from the passive RFID transponder on the machine. From this context it is concluded that the patient is about to prepare a coffee and a vibration alarm buzzes.
  • the element creating the vibration alarm is integrated into a wrist-watch type of garment that also contains a movement sensor for the limb.
  • the functionality of the motion sensor is to be able to track a motion of the patient that was cued by the contextual vibration signal.
  • the motion data is stored on a flash memory on the body- worn sensor system and can be transmitted to a central PC system in regular intervals.
  • the PC system receives the movement data from the sensors.
  • This application is able to give feedback to the patient on the tracked movements. This type of feedback can be an overview of the activities over the day, e.g. "used coffee machine three times, out of which two times with affected side", more detailed information for certain motions, e.g. "jerk when making coffee", and comparisons of the performance on the actual day with the previous days.

Abstract

The invention relates to a patient monitoring system, comprising: at least one patient detector which is adapted for detecting that the patient is in the proximity of a predefined position, and at least one indicator element worn by the patient which is controllable for providing an indication to the patient, wherein the indication is provided to the patient when the patient detector has detected that the patient is in the proximity of the predefined position. The patient monitoring system according to the invention is highly accepted by the patient and helps him to perform better without special rehabilitation exercises.

Description

PATIENT MONITORING SYSTEM
FIELD OF THE INVENTION
The invention relates to the field of patient monitoring systems, and especially to ubiquitous tracking and cueing of a patient's daily tasks.
BACKGROUND OF THE INVENTION
Stroke is a major cause of death and disability in the USA and other western countries. Neurological impairments after stoke leave 80 % of patients with unilateral sensory-motor deficits. These impairments are often lasting and lead to severe problems in performing daily activities like eating, walking, and washing. Rehabilitation exercises have proven to be efficient in regaining motor control, and skills provided the training is intense and the patient is properly guided in the therapy. This guiding and supervising typically happens in a rehabilitation clinic with face-to-face hands-on therapy from a therapist.
One of the things mentioned by rehabilitation specialists as being a major factor in recovery is motivation. After the initial period of intensive therapy with a therapist, the patient is discharged from the rehabilitation program to continue training and exercising at home. This continued training is often unsupervised and patient- initiated, thus failures of compliance to exercise regimes occur widely.
To motivate patients to perform rehabilitation exercises, researchers in the area of technology supported rehabilitation have looked into combinations of haptic devices, sensors, and robotics and "virtual reality" to create engaging exercise experiences for the patient. Also more game-based approaches have been explored to increase the fun component.
These systems are limited however in the sense that they are very task- oriented. In fact, almost all technological rehabilitation systems are task-oriented. There are certain games, exercises and tasks with the system, and the patient has to start the system in order to go through them. This very clinical approach of having the patient perform rehab exercises at home is not something that is rewarding or motivating for the patient. The types of explicit exercises are disruptive to daily routine and require cognitive as well as physical effort on the part of the patient to engage in doing the exercises. More natural and motivating would be if the patient could do whatever he wanted and whenever by making use of the affected limb, without having to make a cognitive effort of a task-switch.
Typically, patients do not want to perform rehabilitation exercises at home. Rather, they would like to go back to their old life where they were simply able to perform the necessary things during the day. Patients want to be independent and skilled at every-day tasks like being able to eat, make and drink coffee, tie their own shoelaces, brush their teeth, and go to the supermarket for some groceries. Being able to do these things again properly is something that would motivate them to practice these. In addition to being able to practice activities of daily living, patients would like to see how they are doing and how they are progressing. Further, as time goes by, and patients tend to diminish slowly their use of the affected limb, they lose the skill level they had after intensive therapy.
SUMMARY OF THE INVENTION
It is an object of the invention to provide a patient monitoring system which is highly accepted by the patient and which helps him to perform better with respect to conventional rehabilitation exercises or even without special rehabilitation exercises.
This object is achieved by a patient monitoring system, comprising: at least one patient detector which is adapted for detecting that the patient is in the proximity of a predefined position, and at least one indicator element worn by the patient which is controllable for providing an indication to the patient, wherein the indication is provided to the patient when the patient detector has detected that the patient is in the proximity of the predefined position.
Accordingly, the invention proposes a way of feedback that is easy to interpret and gives the patient the information he needs to correctly interpret progress and be motivated by it. Especially, with the invention it is possible to trigger limb movements in predefined situations, i.e. when the patient approaches a special site, like the bathroom or the kitchen. In such situations, use of a special limb can be explicitly triggered and, thus, it does not lie in the patient's response any more to use his affected limb. Hence, the patient is taken out of his automatic response mode of using the other limb. This means that the invention encourages use of the affected limb rather than the more automatic response of using the healthy limb.
Actually, a reason that the non-use of the affected limb happens is because people simply forget to use their affected arm. Another reason is that people have no insight into their use or non-use of the affected limb, and unconsciously use it less and less until their healthy limb has completely compensated. The invention also addresses these problems.
According to a preferred embodiment of the invention, a plurality of predefined positions is provided which can be detected by the patient detector and which trigger the indicator element to provide an indication to the patient. Such predefined positions are preferably provided in a patient's home, in a rehabilitation clinic and/or hospital area. In this way, it is possible to trigger indications to the patient in multiple situations in which a limb, especially an affected limb, should be used by the patient. It should be noted that the term "position" is to be understood to mean any location that may be approached by the patient.
The patient detector can be designed in different ways, e. g. a proximity sensor can be used for detecting that the patient is in the proximity of a predefined position. However, according to a preferred embodiment of the invention, the patient detector comprises a wearable detector device worn by the patient and at least one stationary detector device which is provided at a fixed location. This means that the patient detector comprises two types of devices, i. e. typically a single wearable detector device worn by the patient and typically multiple stationary detector devices which are attached to objects, like doors, walls and other objects of daily use. With respect to this, according to a preferred embodiment of the invention, the variable detector device is a RFID reader and the stationary detector device is a passive RFID transponder. Compared with the simple use of proximity sensors for the patient detector, the use of RFID devices, i. e. a RFID reader and one or preferably more passive RFID transponders, triggering an indication to the patient becomes more specific and controllable in a reliable way. Further, it is especially preferred that the wearable detector is battery powered.
In general, the indicator element might be adapted for providing the patient with an indication in different ways, e. g. by an optical and/or an acoustical signal. However, according to a preferred embodiment of the invention, the indicator element comprises a vibration device. In this way, it is not only possible to provide an indication to the patient without disturbing other persons, but it is also possible to provide the patient with further information, e. g. which limb is to be activated in case the vibration device is attached to a special limb. With respect to this, according to a preferred embodiment of the invention, the indicator element is worn on a limb of the patient, preferably on an arm of the patient, most preferably on a wrist. Furthermore, preferably multiple indicator elements are provided, most preferable two indicator elements, each being worn on one wrist of the patient, respectively. In this way, it can be controlled which arm, i. e. the affected or the non-affected arm, is to be used in a special situation, i. e. approaching a special position, room or household device.
Moreover, according to a preferred embodiment of the invention, at least one motion sensor is provided which is worn by the patient and which is adapted for monitoring the patient's movements. Further, with respect to this, according to a preferred embodiment of the invention the motion sensor is adapted for monitoring the movement of a limb of the patient, preferably of a patient's arm. Furthermore, it is especially preferred that the motion sensor is integrated into the indicator element while a motion sensor which is separate from the indicator element can be used, too.
Furthermore, according to a preferred embodiment of the invention, a plurality of motion sensors is provided, e. g. two motion sensors, each one worn on a wrist of the patient, respectively.
The motion data monitored by the motion sensor can be used and distributed in different ways. However, according to a preferred embodiment of the invention, a storage device is provided which is worn by the patient and which is adapted for storing the movements monitored by the motion sensor. If multiple motion sensors are provided, the storage device is provided for separately storing the movement data from each of these motion sensors, respectively. Furthermore, it is preferred that wireless data transmission is provided between the motion sensor and an external analysis device. Such an external analysis device is preferably a computer on which an analysis software is run.
Further, it is preferred that data transmission is provided between the patient detector and the motion sensor. Such data transmission, in general, can be based on a wired connection. However, according to a preferred embodiment of the invention, wireless data transmission is provided between the patient detector and the motion sensor. This gives the patient more freedom for moving in a natural way though wearing device for the patient detector and the at least one motion sensor.
Furthermore, it is also preferred that wireless data transmission is provided between the patient detector and the indicator element. This also serves for the possibility of the natural movement of the patient though wearing one or more indicator elements.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
In the drawings, the only Figure schematically depicts a patient monitoring system according to a preferred embodiment of the invention.
DETAILED DESCRIPTION OF EMBODIMENTS
From the Figure, a system according to a preferred embodiment of the invention can be seen. This system comprises the following components: Passive RFID transponders 1 are provided in form of stickers that are placed on objects in the patient's surroundings. Further, a RFID reader 3 is used that is battery powered and worn by the patient, e.g. as a box 7 on the belt 8. On his wrists, the patient wears two vibration devices 4, i.e. one vibration device 4 on each wrist, wherein these vibration devices 4 are each combined with a motion sensor 5, such as a 3D accelerometer. Furthermore, a radio is provided that connects the RFID reader 3 on the belt 8 with the vibration devices 4 and the motion sensors 5 on the wrists. The vibrations devices 4 and the motion sensors 5 contain sensor boards 9 and a receiver element 10 which is integrated in the box 7 on the belt 8. For the motion sensors 5, a storage device 6 for storing motion sensor data is provided which is also integrated in the box 7 on the belt 8. Finally, wireless data transmission 11 is provided for transmitting the motion data stored in the box 7 on the belt 8 to a PC as an external analysis device running data analysis software.
Especially, two separate applications of the invention are most useful. One application is in the rehabilitation clinic/hospital area, and the other a home-based application.
Accelerometers worn on e.g. the wrists can be used to monitor the ratio of the amount of use of the affected vs. healthy arm of patients. However, monitoring alone will not be sufficient to change the patterns of daily use of limbs by patients. Using RFID tags, it is possible to give context specific triggers to the affected limb. The triggers are simple vibrations for the purpose of reminding the patient to use the affected limb since due to compensation, patients often forget to use. These triggers that appear at the right time and the right place are very potent to get patients to use the affected limb. Recognition of certain tasks and activities done by patients is ideal for triggering the limb, but simple tags that are placed strategically at spots in the house where defined activities take place, for example the stove, the washing table, and the fridge, are excellent alternatives. As tags that can be placed within the home, the same tags can be placed at the rehabilitation site. In this case, the patient is preferably recognized upon entering the site, and tags at strategic places, e.g. in the bathroom, in the building remind the patient to use the affected arm.
The functionality of the tags around the house is simple; objects are tagged with passive RFID transponders that can be attached as stickers and have very low costs. Using a battery-powered RFID reader that is worn on the patient's body, tagged objects in the direct vicinity of the user are detected and identified by a unique ID. When standing e.g. in front of the coffee machine, the RFID reader receives a signal from the passive RFID transponder on the machine. From this context it is concluded that the patient is about to prepare a coffee and a vibration alarm buzzes. The element creating the vibration alarm is integrated into a wrist-watch type of garment that also contains a movement sensor for the limb.
The functionality of the motion sensor is to be able to track a motion of the patient that was cued by the contextual vibration signal. The motion data is stored on a flash memory on the body- worn sensor system and can be transmitted to a central PC system in regular intervals. The PC system receives the movement data from the sensors. This application is able to give feedback to the patient on the tracked movements. This type of feedback can be an overview of the activities over the day, e.g. "used coffee machine three times, out of which two times with affected side", more detailed information for certain motions, e.g. "jerk when making coffee", and comparisons of the performance on the actual day with the previous days. While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive; the invention is not limited to the disclosed embodiments. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting the scope.

Claims

CLAIMS:
1. A patient monitoring system, comprising: at least one patient detector which is adapted for detecting that the patient is in the proximity of a predefined position, and at least one indicator element worn by the patient which is controllable for providing an indication to the patient, wherein the indication is provided to the patient when the patient detector has detected that the patient is in the proximity of the predefined position.
2. The patient monitoring system according to claim 1, wherein a plurality of predefined positions is provided, preferably in a patient's home, in a rehabilitation clinic and/or in a hospital area.
3. The patient monitoring system according to claim 1 or 2, wherein the patient detector comprises a wearable detector device worn by the patient and at least one stationary detector device which is provided at a fixed location.
4. The patient monitoring system according to claim 3, wherein the wearable detector device is a RFID reader (3) and the stationary detector device is a passive RFID transponder (1).
5. The patient monitoring system according to claim 3 or 4, wherein the wearable detector is battery powered.
6. The patient monitoring system according to any of claims 1 to 5, wherein the indicator element comprises a vibration device (4).
7. The patient monitoring system according to any of claims 1 to 6, wherein the indicator element is worn on a limb of the patient, preferably on an arm, most preferably on a wrist.
8. The patient monitoring system according to claim 7, wherein two indicator elements are provided, each being worn on one wrist of the patient, respectively.
9. The patient monitoring system according to any of claims 1 to 8, wherein at least one motion sensor (5) is provided which is worn by the patient and which is adapted for monitoring the patient's movements.
10. The patient monitoring system according to claim 9, wherein the motion sensor (5) is adapted for monitoring the movement of a limb of the patient, preferably a patient's arm.
11. The patient monitoring system according to claim 9 or 10, wherein a plurality of motion sensors (5) is provided.
12. The patient monitoring system according to any of claims 1 to 11, wherein a storage device (6) is provided which is worn by the patient and which is adapted for storing the movements monitored by the motion sensor (5).
13. The patient monitoring system according to any of claims 9 to 12, wherein wireless data transmission is provided between the motion sensor and an external analysis device.
14. The patient monitoring system according to any of claims 9 to 13, wherein wireless data transmission is provided between the patient detector and the motion sensor (5).
15. The patient monitoring system according to any of claims 1 to 14, wherein wireless data transmission is provided between the patient detector and the indicator element.
PCT/IB2009/053296 2008-08-05 2009-07-29 Patient monitoring system WO2010015968A1 (en)

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EP08104960.3 2008-08-05

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121831A1 (en) * 2012-10-29 2014-04-30 Acus S R L Ab SYSTEM AND METHOD FOR MONITORING SEQUENCE OF MOVEMENTS OF A SUBJECT OR DEVICE SUCH AS A PERSON, ANIMAL, A ROBOT OR SIMILAR TO OBJECTS AND / OR DEFAULT SPACE POSITIONS
US8953837B2 (en) 2011-02-17 2015-02-10 Tyto Care Ltd. System and method for performing an automatic and self-guided medical examination
US10143373B2 (en) 2011-02-17 2018-12-04 Tyto Care Ltd. System and method for performing an automatic and remote trained personnel guided medical examination

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB2245737A (en) * 1990-06-05 1992-01-08 Marilyn Kaye Nutritional aid device
US5812059A (en) * 1996-02-23 1998-09-22 Sloan Valve Company Method and system for improving hand cleanliness
US6426701B1 (en) * 2000-09-20 2002-07-30 Ultraclenz Engineering Group Handwash monitoring system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245737A (en) * 1990-06-05 1992-01-08 Marilyn Kaye Nutritional aid device
US5812059A (en) * 1996-02-23 1998-09-22 Sloan Valve Company Method and system for improving hand cleanliness
US6426701B1 (en) * 2000-09-20 2002-07-30 Ultraclenz Engineering Group Handwash monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8953837B2 (en) 2011-02-17 2015-02-10 Tyto Care Ltd. System and method for performing an automatic and self-guided medical examination
US10143373B2 (en) 2011-02-17 2018-12-04 Tyto Care Ltd. System and method for performing an automatic and remote trained personnel guided medical examination
ITMI20121831A1 (en) * 2012-10-29 2014-04-30 Acus S R L Ab SYSTEM AND METHOD FOR MONITORING SEQUENCE OF MOVEMENTS OF A SUBJECT OR DEVICE SUCH AS A PERSON, ANIMAL, A ROBOT OR SIMILAR TO OBJECTS AND / OR DEFAULT SPACE POSITIONS

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