WO2011044337A2 - Système de suivi sans fil et procédé pour liaison d'informations - Google Patents

Système de suivi sans fil et procédé pour liaison d'informations Download PDF

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Publication number
WO2011044337A2
WO2011044337A2 PCT/US2010/051785 US2010051785W WO2011044337A2 WO 2011044337 A2 WO2011044337 A2 WO 2011044337A2 US 2010051785 W US2010051785 W US 2010051785W WO 2011044337 A2 WO2011044337 A2 WO 2011044337A2
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WO
WIPO (PCT)
Prior art keywords
mesh network
information
healthcare device
data related
transmits data
Prior art date
Application number
PCT/US2010/051785
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English (en)
Other versions
WO2011044337A3 (fr
Inventor
Matthew R. Perkins
Original Assignee
Awarepoint Corporation
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 Awarepoint Corporation filed Critical Awarepoint Corporation
Priority to GB1207798.8A priority Critical patent/GB2486868B/en
Publication of WO2011044337A2 publication Critical patent/WO2011044337A2/fr
Publication of WO2011044337A3 publication Critical patent/WO2011044337A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0081—Transmission between base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications
    • G01S2205/02—Indoor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/20—Arrangements in telecontrol or telemetry systems using a distributed architecture
    • H04Q2209/25—Arrangements in telecontrol or telemetry systems using a distributed architecture using a mesh network, e.g. a public urban network such as public lighting, bus stops or traffic lights
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention is related to wireless tracking systems and methods. More specifically, the present invention relates to a system and method for backhauling information over a mesh network.
  • a typical radio frequency identification system includes at least multiple tagged objects, each of which transmits a signal, multiple receivers for receiving the transmissions from the tagged objects, and a processing means for analyzing the transmissions to determine the locations of the tagged objects within a predetermined environment.
  • U.S. Patent Number 3805265 discloses a location system that uses line-of-sight radiant wave energy for signal transmission.
  • Schwengler U.S. Patent Number 7050819 is directed at the problem of adequate power for a mobile telephone for a two-way communication function or a regeneration function as a node of a mesh network.
  • Zodnik U.S. Patent Publication Number 2004/0147232, discloses wall-mounted (RJ-11 or RJ-45) wireless transceivers configured to only track the location of a self-identified wireless communication device in order to communicate the location of the self- identified wireless communication device to an emergency service such as 911.
  • Physiologic Monitor System And Architecture And Related Monitoring Methods discloses a systems for monitoring a patient that uses a personal status monitoring device, such as a ECG electrode assembly, which transmits a signal to an ECG electrode assembly, which transmits a signal to an ECG electrode assembly.
  • a personal status monitoring device such as a ECG electrode assembly
  • intermediary device such as a PDA, which transmits to a server using a WLAN.
  • Dempsey et al., U.S. Patent Number 7053831 for a Location System discloses a system which allows for a location to be determined without requiring precise calculations through use of an object identifier that transmits one identifier corresponding to an object identifier and a second identifier which is a group identifier.
  • Dempsey, U.S. Patent Number 7099895 for a System And Method For Performing Object Association Using A Location Tracking System discloses a system for recording object associations based on signals for object identifiers.
  • the present invention provides a solution to transmitting health information.
  • the present invention utilizes a mesh network that acts to backhaul information obtained utilizing a healthcare device.
  • One aspect of the present invention is a system for backhauling health information over a mesh network.
  • the system includes a plurality of first tags, a mesh network, and an information engine.
  • Each of the plurality of first tags represents a first object.
  • the mesh network preferably includes a plurality of plug-in sensors located within the facility. At least one node in the mesh network operates as healthcare device.
  • the information engine is in communication with the mesh network and determines a position location of the healthcare device and an operation of the healthcare device.
  • the first object is fixed or mobile.
  • the healthcare device is preferably at least one of a fluid pump, heart monitor, ventilation pump and electrocardiogram.
  • the mesh network preferably routes information from the healthcare device to a predetermined destination.
  • the mesh network preferably transmits data related to who accessed the healthcare device last.
  • the mesh network preferably transmits data related to how much time is left before the device needs to be serviced.
  • the mesh network preferably transmits data related to what type of chemicals are in the healthcare device.
  • the mesh network preferably transmits data related to the status of the device.
  • the mesh network preferably provides firmware upgrades to the healthcare device.
  • the healthcare device preferably operates as a RTLS device using one of ultrasound, infrared and radiofrequency medium.
  • the system includes a plurality of first tags and a mesh network.
  • Each of the plurality of first tags represents a first object.
  • the mesh network includes a plurality of sensors located within the facility.
  • a plurality of nodes in the mesh network operate as RTLS devices using one of ultrasound, infrared, and a radiofrequency medium, wherein each of the plurality of end points transmit to at least one of a plurality of sensors in the mesh network.
  • the mesh network routes RTLS information from each of the plurality of nodes to a predetermined destination.
  • the mesh network preferably operates as an RTLS and a backhaul for information from each of the plurality of end points.
  • the mesh network preferably operates as a secondary RTLS system and a backhaul for information from each of the plurality of end points.
  • Each of the plurality of end points preferably operates as a healthcare device.
  • the healthcare device is preferably at least one of a fluid pump, heart monitor, ventilation pump and electrocardiogram.
  • the mesh network preferably routes information from the healthcare device to a predetermined destination.
  • the mesh network preferably transmits data related to who accessed the healthcare device last.
  • the mesh network preferably transmits data related to how much time is left before the device needs to be serviced.
  • the mesh network preferably transmits data related to what type of chemicals are in the healthcare device.
  • the mesh network preferably transmits data related to the status of the device.
  • the mesh network preferably provides firmware upgrades to the healthcare device.
  • the healthcare device preferably operates as a RTLS device using one of ultrasound, infrared
  • a medium range wireless communication format is preferably selected from ZIGBEE communication format, Bluetooth communication format, Low-Power BlueTooth communication format, WiFi communication format, Low-Power WiFi communication format, Ultra Wide Band communication format, Ultrasound communication format or Infrared communication format.
  • Real time location systems frequency abbreviated as RTLS, provide inherent characteristics which have both immediate tactical short-term benefits as well as long-term strategic implications for hospital operations.
  • Real time location systems provide hospital administrators with actionable information regarding the location, status and movement of equipment and people.
  • hospitals have access not only to the specific locations of equipment and people - but also advanced RTLS search capabilities allowing searching by specific location (floor, area, room) or unique asset identifier (department owner, type, manufacturer, model number, asset control number or ⁇ ).
  • FIG. 1 is schematic view of a system for analyzing an interaction between objects.
  • FIG. 2 is a multi-floor view of a facility employing a system for analyzing an interaction between objects.
  • FIG. 3 is a floor plan view of a single floor in a facility employing the system for analyzing an interaction between objects.
  • FIG. 4 is a block diagram of a flow of information utilizing a system for analyzing an interaction between objects.
  • FIG. 5 is a flow chart of a method for analyzing an interaction between objects.
  • FIG. 6 is a flow chart of a method for analyzing an interaction between objects.
  • FIG. 7 is a block diagram of a tag.
  • FIG. 8 is a plan view of an identification badge containing a communication device.
  • a system for tracking objects within a facility is generally designated 50.
  • the system 50 is capable of analyzing an interaction between objects, individuals 58 and/or devices lOO.and the system backhauls information over a mesh network to an information engine 65 for processing.
  • the system 50 preferably includes a plurality of sensors 55, a plurality of bridges 56, a plurality of communication devices 59, a plurality of tags 60, and at least one information engine 65.
  • the sensors 55 form a mesh network for receiving signals from the communication devices 59 and tags 60.
  • U.S. Patent Number 7197326 for a Wireless Position Location And Tracking System, which is hereby incorporated by reference in its entirety.
  • a more specific example of the sensors 55 is disclosed in U.S. Patent Number 7324824, for a Plug-In Network Appliance, which is hereby incorporated by reference in its entirety.
  • Another wireless tracking system and method is Perkins et al, U.S. Patent Application Number 12/885509, filed on September 18, 2010, for a Wireless Tracking System And Method Utilizing Near Field Communication Devices, which is hereby incorporated by reference in its entirety.
  • Yet another wireless tracking system and method is Perkins et al., U.S. Patent Application Number 12/484236, filed on June 14, 2009, for a Wireless Tracking System And Method For Analyzing An Interaction Between Objects, which is hereby incorporated by reference in its entirety.
  • the system 50 is preferably employed at a facility 70 such as a business office, factory, home, hospital and/or government agency building.
  • the system 50 is preferably utilized to backhaul information over the mesh network from various objects positioned throughout the facility 70 in order to analyze real time information pertaining to the object at an information engine 65.
  • the system 50 also tracks the location of objects in the facility 70.
  • the communication devices 59 and tags 60 preferably continuously transmit signals on a predetermined time cycle, and these signals are received by sensors 55 positioned throughout the facility 70.
  • the tags 60 and communication devices 59 transmit signals in a random, ad-hoc or dynamic manner, and these signals are received by the sensors 55 positioned throughout the facility 70.
  • the sensors 55 transmit the data from the communication devices 59 and tags 60 to a bridge 56 for transmission to the information engine 65. If a sensor 55 is unable to transmit to a bridge 56, the sensor 55 may transmit to another sensor 55 in a mesh network for eventual transmission to a bridge 56. In a preferred embodiment, a transmission may be sent from a
  • the information engine 65 preferably continuously receives transmissions from the mesh network formed by the sensors 55 via the bridges 56 concerning the operation of objects 100 bearing the communication device 59 and/or bearing a tag 60 within the facility 70.
  • the information engine 65 processes the transmissions from the sensors 55 and calculates a real-time position for each of the objects and data concerning the object 100 within the facility 70.
  • the real-time location information for each of the objects is preferably displayed on a graphical user interface ("GUI").
  • GUI graphical user interface
  • a floor plan image may also be used with a graphical user interface of a computer, personal digital assistant, or the like so that an individual of the facility 70 is able to quickly locate objects 100 within the facility 70, know the real-time status of the object ( is the object in operation, in need of maintenance, or similar information).
  • the system 50 utilizes sensors 55 to monitor and identify the real-time status and position of objects 100 bearing or integrated with communication devices 59.
  • the sensors 55a-f preferably wirelessly communicate with each other (shown as double arrow lines) and with an information engine 65 through a wired connection 66 via at least one bridge 56, such as disclosed in the above-mentioned U.S. Patent Number 7324824 for a Plug-In Network Appliance.
  • the communication devices 59 and tags 60 transmit wireless signals 57 which are received by the sensors 55a-e, which then transmit signals to bridges 56 for eventual transmission to the information engine 65.
  • the information engine 65 is preferably located on-site at the facility 70. However, the system 50 may also include an off-site information engine 65, not shown.
  • each communication device 59 and tag 60 preferably transmits a radio frequency signal of approximately 2.48 GigaHertz ("GHz").
  • the communication format is preferably IEEE Standard 802.15.4.
  • each communication device 59 and tag 60 transmits an infrared signal or an ultrasound signal.
  • Each device preferably contains a low-power, medium-range (lfoot to 30 feet) wireless communication system.
  • wireless communication systems include ZIGBEE, BLUETOOTH, Low-Power BLUETOOTH, WiFi or Low- Power WiFi, Ultra Wide Band (“UWB”), Ultrasound and Infrared communication systems.
  • the wireless communication system is used to exchange device specific information after the low-power short-range system has indicated that an interaction has occurred.
  • the wireless communication system can also be used independent of the low-power short-range system for other wireless communication applications such as location and tracking, sense and control, building automation, smart energy, telecom applications, consumer building automation, remote control applications, home health care, personal fitness, personal wellness, and many other applications.
  • the tags 60 may be constructed with an asset theft protection system such as disclosed in Baranowski et al, U.S. Patent Number 7443297 for a Wireless Tracking System And Method With Optical Tag Removal Detection, which is hereby incorporated by reference in its entirety.
  • the tags 60 and communication devices 59 may be designed to avoid multipath errors such as disclosed in Nierenberg et al, U.S. Patent Number 7504928 for a Wireless Tracking System And Method Utilizing Tags With Variable Power Level
  • the facility 70 is depicted as a hospital.
  • the facility 70 has multiple floors 75a-c.
  • Each floor 75a, 75b and 75c has multiple rooms 90a-i, with each room 90 accessible through a door 85.
  • sensors 55a-o Positioned throughout the facility 70 are sensors 55a-o for obtaining readings from communication devices 59 and tags 60 attached to people or devices.
  • a bridge 56 is also shown for receiving transmissions from the sensors 55 for backhauling the information over the mesh network to the information engine 65.
  • the system 50 determines that individuals 58a, 58b and 58c are located in a surgery room and are using device 100c, which is a surgical kit.
  • the information engine 65 analyzes the interaction by monitoring the duration of the interaction, the devices 100 utilized, the location of the interaction (surgery), the previous location of the individuals 58 (possibly a surgical prep room) and additional factors. Also shown in FIG. 2, information pertaining to a fluid pump 100b is sent from the fluid pump 100b, acting as a node in the mesh network, to the sensor 55 for backhauling over the mesh network to the information engine 65.
  • the backhauled information provides a current, real time status of the fluid pump, what types of chemicals are contained within it, the levels of the chemicals, the temperature, and other valuable information.
  • a hospital can obtain valuable information about its equipment, machines, and the like, without having to use a human resource to obtain the information since the information is backhauled over the mesh network to at least one information engine 65 for analysis and display on a GUI if required.
  • the system 50 determines that individuals 58a, 58b and 58c are located in a patient's room and are using device with an attached tag 60c, which is a patient monitoring device.
  • individual 58a is a patient
  • individual 58b is a physician
  • individual 58c is a nurse.
  • the information engine 65 analyzes the interaction by monitoring the duration of the interaction, the devices 100 utilized, the location of the interaction (patient's room), the previous location of the individuals 58 and additional factors. The information engine 65 uses this data to generate billing information for the patient.
  • FIG. 4 illustrates a preferred architecture of the system 50.
  • the information providers are set forth on one side of the network and the operations is set forth on the other side of the network.
  • the illustrated architecture of the system 50 is not meant to limit any physical relationship between information providers and operations.
  • an individual 58 could be tracked while accessing information from a device 100 such as a computer 66 in operations.
  • the information providers include individuals 58 that wear communication devices 59, an
  • a bridge 56 acts as an intermediary between the backhaul information and the information engine.
  • the bridge 56 communicates information to the information engine 65 which analyzes the information to determine an interaction between objects for access through an enterprise local area network for display on computers 66 or other graphical user interface devices.
  • a method 1000 for backhauling information over a mesh network is illustrated in FIG. 5.
  • a communication device associated with an object in this case a ventilation pump, operates as a node in the mesh network and a healthcare device.
  • the ventilation pump also operates as a RTLS device.
  • a wireless signal is transmitted from the ventilation pump using a medium power communication protocol such as ultrasound, infrared and radiofrequency.
  • the first wireless signal is received at at least one of a plurality of sensors positioned within a facility.
  • the signal is forwarded over the mesh network using a communication protocol such as ZIGBEE.
  • the signal is received at an information engine.
  • the information engine analyzes the backhauled information on the signal for a multiple of factors.
  • the multiple factors include a status of the device, a position location of an action, a duration of the action, a previous location of the device prior to the action, and information for other objects or persons within a predetermined distance of the location of the action.
  • the backhauled information is communicated to a graphical user interface.
  • FIG. 6 Another method 2000 for backhauling information over a mesh network is illustrated in FIG. 6.
  • a healthcare device operates as a
  • the healthcare device is a heart rate monitor.
  • a wireless signal is transmitted from the healthcare device using a medium power communication protocol such as ultrasound, infrared and radiofrequency.
  • the first wireless signal is received at at least one of a plurality of sensors positioned within a facility.
  • the signal is forwarded to an information engine.
  • the information engine determines that a firmware upgrade is needed at the healthcare device.
  • the information engine through the mesh network transmits the firmware upgrade to the healthcare device.
  • the healthcare device receives the firmware and performs an upgrade of its firmware.
  • a tag 60 utilized with a device 100 is illustrated in FIG. 7.
  • the tag 60 preferably includes a microcontroller 101, a transceiver 103, a power supply 104 and a sensor 106.
  • the tag 60 includes a motion sensor 105.
  • the transmissions are transmitted through transceiver 103.
  • a power supply 104 provides power to the tag 60. All of the components are preferably contained within a housing 107.
  • a communication device 59 preferably has the same components and structure of the tag 60 illustrated in FIG. 7.
  • FIG. 8 is a block diagram of a system for determining a real-time location of an object.
  • Sensors receive the messages from the broadcasting tags through attached different antennas, calculate the signal strength, and decide which signal strength to use.
  • the signal strength information is routed to the server for location processing.
  • Bridge/appliance/server devices received signal strength information from the high definitions sensors and make location decisions.
  • the tag sends broadcast messages preferably using ZIGBEE based wireless transmissions.
  • the sensors receive the ZIGBEE based wireless transmissions preferably through two spatially and angularly diverse antennas. Software on each sensor preferably identifies and matches the sending tag and received signal strength readings.
  • Each sensor preferably sends the signal strength information to the appliance through a wireless ZIGBEE based wireless transmission network.
  • the tags and sensors communicate to the bridges preferably through a ZIGBEE based wireless transmission network.
  • the location of the tags is preferably calculated by using the paired signal strength between tags and the sensors that hear the tag.
  • Time slicing is also utilized in determining a real-time location of the object within an indoor facility by making time slots available in each antenna.
  • a patient wears, or has attached, a patient tag 60a and a plurality of medical devices bearing or integrated with tags 60b.
  • Such healthcare devices may include blood pressure monitors, dialysis devices, respiration aids, oxygen tanks, wheelchairs, and the like, and all may act as nodes in a mesh network.
  • the plurality of network monitors preferably utilize ZIGBEE networking standards and technology, such as disclosed at zigbee.org, which pertinent parts are hereby incorporated by reference.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention porte sur une solution pour transport sur une liaison terrestre d'informations de santé. La présente invention utilise un réseau maillé pour transporter sur une liaison terrestre les informations de santé. Le système (50) comprend une pluralité de premières étiquettes (60), un réseau maillé, et un moteur d'informations (65). Chacune des étiquettes (60) représente un premier objet (100). Le réseau maillé comprend de préférence une pluralité de détecteurs enfichables (55) placés dans l'équipement (70). Au moins un nœud d'un réseau maillé fonctionne en tant que dispositif de soin de santé (100). Le moteur d'information (65) est en communication avec le réseau et détermine l'emplacement de position du dispositif de soin de santé (100) et le fonctionnement du dispositif de soin de santé (100).
PCT/US2010/051785 2009-10-07 2010-10-07 Système de suivi sans fil et procédé pour liaison d'informations WO2011044337A2 (fr)

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Application Number Priority Date Filing Date Title
GB1207798.8A GB2486868B (en) 2009-10-07 2010-10-07 Wireless tracking system and method for backhaul of information

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US89991309A 2009-10-07 2009-10-07
US12/899,913 2009-10-07
US24962909P 2009-10-08 2009-10-08
US61/249,629 2009-10-08

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WO2020153897A1 (fr) * 2019-01-25 2020-07-30 Spåra Group Ab Dispositif de suivi de position portable à faible puissance, système et procédés de suivi de position

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Publication number Priority date Publication date Assignee Title
US9050411B2 (en) 2003-11-05 2015-06-09 Baxter International Inc. Dialysis system including downloaded prescription entry
WO2020153897A1 (fr) * 2019-01-25 2020-07-30 Spåra Group Ab Dispositif de suivi de position portable à faible puissance, système et procédés de suivi de position

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WO2011044337A3 (fr) 2011-09-15
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