US20210361184A1 - Expandable electrode set - Google Patents
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- US20210361184A1 US20210361184A1 US16/880,104 US202016880104A US2021361184A1 US 20210361184 A1 US20210361184 A1 US 20210361184A1 US 202016880104 A US202016880104 A US 202016880104A US 2021361184 A1 US2021361184 A1 US 2021361184A1
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Definitions
- ECG electrocardiogram
- EEG electrocardiogram
- fECG fetus electrocardiogram
- EOG electrocardiogram
- EOG electrocardiogram
- EIT electrical impedance tomography
- Achieving correct measurements of electrophysiological signals requires to locate precisely measuring electrodes. Correct placement of electrodes for stimulation or imaging is necessary for accurate readings.
- FIG. 1 depicts an expandable electrode set in a non-deployed state, in accordance with some examples of the present disclosure.
- FIG. 2 depicts an electrode set in a deployed state, in accordance with some examples of the present disclosure
- FIG. 3 illustrates electrical wiring in an expandable electrode set, in accordance with some examples of the present disclosure.
- FIG. 4 is a close-up view of an example node used in an expandable electrode set, in accordance with some examples of the present disclosure.
- FIG. 5 is a schematic diagram depicting an electrode set system, in accordance with some examples of the present disclosure
- FIG. 6 is a flowchart depicting a method of using an expandable electrode set, in accordance with some examples of the present disclosure.
- FIG. 7 is a flowchart depicting a method of manufacturing an expandable electrode set, in accordance with some examples of the present disclosure.
- FIG. 8 is a depicts a component level view of a monitoring/input device for use with the systems and methods described herein, in accordance with some examples of the present disclosure.
- Examples of the present disclosure can comprise systems and methods for providing and using an expandable sensor set.
- a conventional sensor set When using a conventional sensor set to measure three-dimensional body parts, it is often difficult to properly align the sensors at the correct position on the body (part) of a patient to try to get as accurate of a reading as possible. This often limits the use of conventional sensor sets to hospitals or other facilities in which a technician is available for the installation. Because of the need for specialists to install conventional sensor sets, the costs to use conventional sensor sets can be prohibitively expensive as well as inconvenient, this in turns create limited capacities to leverage the data that can be acquired in many medical cases. It should be noted that, while some of the figures are described in terms of installation onto a subject by a second person, the presently disclosed subject matter is not limited in that manner, as various examples of the presently disclosed subject matter may be installed by the subject themselves.
- FIG. 1 depicts a top-down view of an expandable electrode set 100 in a non-deployed state.
- electrode an electrode
- electrode set an electrode set
- the presently disclosed subject matter is not limited to electrodes, as the description using electrodes is merely exemplary and illustrative.
- non-deployed or undeployed means that the electrode set 100 is not installed on a body part and “deployed” means that the electrode set 100 is partially or fully installed on a body part.
- FIG. 2 the electrode set 100 is shown in a deployed state. In the non-deployed state illustrated in FIG.
- the electrode set 100 is substantially flat, meaning that when placed on a flat surface, all or substantially all of a bottom surface of the electrode set 100 proximate to the flat surface will be in contact with the surface.
- the electrode set 100 is partially deformed to wrap around a 3D body part of a patient or subject to be studied.
- the deformation may be termed “warping,” wherein both terms are interchangeable.
- nodes 102 H and 102 H, connected by connector 104 E are shown in FIG. 1 to have a distance of D 1 between the nodes 102 H and 102 H, whereas in FIG. 2 , the distance between the nodes 102 H and 102 H is illustrated as D 2 , which is greater than D 1 .
- the electrode set 100 includes nodes 102 A- 102 F (collectively referred to herein as the “nodes 102 ,” and individually the “node 102 A,” the “node 102 B,” and so forth) and connectors 104 A- 104 E (collectively referred to herein as the “connectors 104 ,” and individually the “connector 104 A,” the “connector 104 B,” and so forth).
- FIG. 1 includes additional nodes and connectors not labeled, which is merely for purposes of illustration. The internal construction of the nodes 102 and the connectors 104 are described in more detail in FIGS. 3 and 4 .
- the nodes 102 are used to sense (measure or detect) electrophysiological signals that are the result of electrical activity of a particular body part.
- the shapes of the various components of the electrode set 100 illustrated in FIG. 1 are merely exemplary and may have different shapes depending on a particular use.
- the nodes 102 may be circular as illustrated in FIG. 1 , but may also be ellipses, egg-shaped, squares, rectangles, and/or polygons, or combinations thereof.
- the nodes 102 may be used to impart a current into the subject being tested to measure impedance.
- the electrode set 100 further includes measurement leads 106 A and 106 B and measurement connectors 108 A and 108 B.
- the measurement leads 106 A and 106 B receive electrical signals from the nodes 102 through the connectors 104 .
- the measurement leads 106 A and 106 B have within them wires from each of the nodes 102 that run from the nodes 102 to the measurement leads 106 A and 106 B.
- the measurement leads 106 A and 106 B are connected to a device that measures the electrical signals from the nodes 102 (shown in more detail in FIG. 2 ).
- the electrode set 100 of FIG. 1 provides various mechanisms that allow various users, including untrained people, to properly place the electrode set 100 on a body party (e.g. a head or a belly of a pregnant woman).
- a body party e.g. a head or a belly of a pregnant woman.
- a first mechanism that allows for the proper placement of the electrode set 100 on a body part are alignment markers 110 A- 110 D (collectively referred to herein as the “alignment markers 110 ,” and individually the “alignment marker 110 A,” the “alignment marker 110 B,” and so forth).
- the alignment markers 110 are used by a person installing the electrode set 100 to properly align the electrode set 100 .
- the alignment markers 110 are configured to be put in contact with a predefined anatomical landmark on a person to be studied. The landmarks can be based on various factors, including standards defined by a medical community to place the nodes 102 so as to record correctly electrophysiological signals.
- the presently disclosed subject matter does not require the use of specific landmarks, as other locations on a body may be used and are considered to be within the scope of the presently disclosed subject matter.
- the ears, nose, belly button, or other landmark may be used for the proper placement of the electrode set 100 .
- the electrode set 100 is not limited to use on humans, as the electrode set 100 may be used on non-human subjects. In the example illustrated in FIG.
- the alignment markers 110 are located according to nasion, inion and both tragi anatomical landmarks in the international 10 - 20 system or variants thereof, though as mentioned herein, other landmarks may be used and are considered to be within the scope of the presently disclosed subject matter.
- a person installing the electrode set 100 places and temporarily affixes (using tape or other adhesive appropriate for use on a body) the one or more alignment markers 110 on one or more locations (i.e. the landmarks).
- the landmarks there are four alignment markers 110 , although as previously mentioned, there may be more than four or fewer than four depending on the particular configuration of the electrode set 100 .
- the placement of the alignment marker 110 exerts a force on the node 102 closest to the alignment marker 110 through marker connectors 112 A- 112 D (collectively referred to herein as the “marker connectors 112 ,” and individually the “marker connector 112 A,” the “marker connector 112 B,” and so forth).
- the placement of the alignment marker 110 C exerts a pulling force on the node 102 B through the marker connector 112 C in a direction generally in line with force vector XE.
- the placement of the alignment marker 110 A exerts a force generally in line with force vector XN
- the placement of the alignment marker 110 B exerts a force generally in line with force vector XW
- the placement of the alignment marker 110 D exerts a force generally in line with force vector XS.
- warp refers to a material that has been deformed from a planar state (as illustrated in FIG. 1 ) to a three-dimensional state (as illustrated by way of example in FIG. 2 ).
- the electrode set 100 is designed with materials that provide an appropriate stretch force that counters the pulling force to correctly align the nodes 102 onto the one or more landmarks. For example, an elastic force (i.e.
- the force that occurs when a deformed object tries to return to its original shape) that is too low may cause various nodes to be too easily pulled in a particular direction.
- the rigidity of the structure of the electrode set 100 and its nodes 102 and connectors 104 is insufficient to provide a controlled and specific deployment of the nodes 102 of the electrode set 100 .
- the structure of the electrode set 100 may require heavy glues or adhesives to keep the alignment markers 110 in place and may place an undue strain on the material of the electrode set 100 , among other disadvantages.
- construction of the electrode set 100 and its components, especially the connectors 104 are designed to provide a balance between rigidity and flexibility.
- a sinusoidal shape constructed with particular materials achieves this balance.
- the shapes and materials are examples, as other shapes and materials may be used.
- other shapes such as spiral-shaped, double spiral-shaped, horseshoe-shaped or angular-shaped may be used.
- the shape of the connectors 104 of the electrode set is designed to allow for a planar configuration when not deployed while allowing for a non-planar configuration during use.
- the sinusoidal shape also allows the spacing between the nodes 102 to be changed from a first distance to one or more second distances depending on how much the connectors 104 are pulled.
- the one or more second distances may be used to allow the electrode set 100 to be deployed in various uses.
- the ratio of a first distance between two nodes linked by a connector, such as the nodes 102 B and 102 F connected by the connector 104 H, in the deployed configuration and the distance between the same two nodes linked by the same connector element in the undeployed configuration is greater than 1.05, and in some examples, greater than the ratios of 1.05 and up to 2.0, though greater ratios may be achievable depending on the particular materials, dimensions, and the like.
- the sinusoidal shape along with the predetermined elastic force provided by the connectors 104 allow for the electrode set 100 to be used on various sizes and shapes of body parts.
- the electrode set 100 may be used for skulls or abdomens, as well as differently shaped body parts, including those of various cultures and ethnicities.
- the sinusoidal shape and the elastic force cause the electrode set 100 to deform in a predetermined manner.
- the elastic force and the sinusoidal shape cause the nodes 102 of the electrode set 100 to space apart at distances in the direction of the force vectors that allow for a proper placement of the nodes 102 on the locations of the body part to be measured.
- the electrode set 100 when installed, the electrode set 100 will not have an area of nodes 102 that remain bunched together at or near pre-deformation distances and other nodes 102 that are spread too far apart at or near post-deformation distances.
- the consistent deformation across all force vectors allows the electrode set 100 to be used on various body sizes and shapes.
- the length of the connectors 104 remain the same, meaning the connectors 104 don't stretch, but rather, their shape changes from a sinusoidal to linear shape.
- the connectors 104 are constructed using a polyimide, polyethylene, polyether ether ketone (PEEK), or other fully or partially insulative polymer.
- the connectors 104 (including any internal components such as copper tracks or wiring) preferably have a thickness within a range of 90 ⁇ m to 200 ⁇ m, a range of 100 ⁇ m to 170 ⁇ m, and in a more preferable configuration, a range of thickness from 118 ⁇ m to 122 ⁇ m.
- the thickness of the connectors 104 is 120 ⁇ m with a tolerance of twenty percent (20%). It should be noted that the thickness of the connectors 104 may vary depending on the particular material used in order to provide a similar elastic force.
- the monitoring/input device 200 provides the electrical power to allow the nodes 102 to be used to detect electrophysiological signals produced by the part 202 of the human being studied, e.g. the head illustrated by way of example in FIG. 2 .
- the monitoring/input device 200 provides the electrical power through the measurement leads 106 A and 106 B to allow for the imaging.
- the measurement leads 106 A and 106 B are connected to the monitoring/input device 200 by the insertion of the measurement connectors 108 A and 108 B into appropriate ports (not shown) of the monitoring/input device 202 .
- the monitoring/input device 200 may record data for later transfer to a system for diagnosis/measurement and/or may have internal communication capabilities that allow the monitoring/input device 200 to transmit the data for use (explained in more detail in FIG. 5 ).
- FIG. 3 illustrates electrical wiring in the electrode set 100 , in accordance with some examples of the present disclosure. Shown in FIG. 3 are the measurement lead 106 A and nodes 104 . Within the nodes 104 and the measurement lead 106 A (measurement lead 106 B is similarly constructed) are wires that put the nodes 102 (for example, the node 102 J in FIG. 3 ) in electrical communication with the measurement lead 106 A, illustrated in more detail in FIG. 4 .
- FIG. 4 is a close-up view of the node 102 J used in the electrode set 100 , in accordance with some examples of the present disclosure.
- the node illustrated in FIG. 4 includes a pad 402 , a pad stabilizer 404 , and a pad stiffener 406 .
- the pad 402 can be constructed of various conductive and semi-conductive materials including, but not limited to, copper, aluminum, stainless steel, and the like.
- An active area of the pad 402 i.e. the area placed in contact or proximate to the surface of the part of the subject being studied) can comprise silver, silver chloride, electrically conductive silicone, electrically conductive polymer, or a plastic loaded with a conductive material such as carbon.
- the pad 402 is illustrated as being circular in shape, but other shapes, such as, but not limited to, a spiral, a double spiral, a horseshoe, or an angular shape, may be used and are considered to be within the scope of the presently disclosed subject matter.
- the pad 402 is stabilized and attached to the connector 104 R by the pad stabilizer 404 .
- the pad stabilizer envelops at least a portion of the pad 402 , though the surface of the pad 402 that is designed to be placed in contact with the skin or other surface to be measured or detected has preferably little to no material.
- one or more of the pads, and the pads themselves may be constructed of magnetic conductors (such as carbon) that may be used in applications such as magnetic resonance imaging.
- the pad stiffener 406 is used to stiffen or secure the electrical connection between the pad 402 and a wire 302 A.
- a wire 302 B is used by another node 102 .
- the wire 302 A is use by a measurement device to detect electrical activity the subject being studied (the passive configuration) or, in an alternative configuration, deliver electrical energy (the active configuration).
- the node 402 may be used to detect electrical activity from a subject being studied.
- the node 402 may receive enough electrical energy from the wire 302 A to allow for the imaging of a portion of the body by stimulating the subject with electrical signals.
- a body part may be imaged by deploying the node 102 J, applying a current through the wire 302 A into the pad 402 , recording potentials, and reconstructing an image from the potentials of the node 102 J and other nodes 102 .
- the pad 402 of the node 102 J further includes a passing hole 408 .
- the passing hole 408 is an opening through the pad 402 and is used to allow an injection through the passing hole 408 for introducing a layer of an electroconductive material between the active area of the pad 402 and a portion of skin of the subject being studied while the pad 402 is proximate to the skin of the subject being studied.
- a type of electroconductive material may be gel used with EEG or ECG cup electrodes, though other types of electroconductive materials may be used and are considered to be within the scope of the presently disclosed subject matter.
- the pad 402 of the node 102 J further includes orifices 410 .
- the orifices 410 may be used to provide a means for affixing the node 102 J in a manner similar to the passing hole 408 or may be used to allow air to escape when the node 102 J is affixed, among other uses.
- the passing hole 408 may also be used to determine if sufficient gel or cream is dispensed, as the cream or gel may leak through the passing hole 408 when a sufficient amount is used.
- the node 102 J may include more or fewer orifices 410 and more passing holes 408 or no passing holes 408 . In alternative designs, this passing hole is not present, and the gel is dispensed under the electrode by lifting it to inject the gel.
- FIG. 5 is a schematic diagram depicting an electrode set system 500 , in accordance with some examples of the present disclosure.
- the electrode set 100 may be used to monitor or measure a part 202 of a body of a human.
- the electrode set 100 is in electrical communication with the monitoring/input device 200 .
- the electrode set 100 is connected to the monitoring/input device 200 by inserting the measurement leads 106 A and 106 B into the monitoring/input device 200 .
- the presently disclosed subject matter is not limited to removable measurement leads, as some configurations may include preinstalled measurement leads. These and other configurations are considered to be within the scope of the presently disclosed subject matter.
- the electrode set system 500 further includes a monitoring service 502 communicatively connected to the monitoring/input device 200 through a network 504 .
- the network 504 may be any type of network that communicatively connects the monitoring/input device 200 to the monitoring service 502 , including, but not limited to, a Wi-Fi network, a local area network, or a cellular network.
- a Wi-Fi network a Wi-Fi network
- a local area network a cellular network.
- the user of the electrode set 100 installs the electrode set on a body to be monitored and/or measured.
- the electrode set 100 is connected to the monitoring/input device 200 .
- the monitoring/input device 200 is connected to the monitoring service 502 .
- the monitoring/input device 200 stores data locally while in use.
- the monitoring/input device 200 transmits data to the monitoring service 502 while the electrode set 100 is in use or at anytime thereafter.
- the monitoring service 502 transmits instructions to the monitoring/input device 200 to configure the operation of the monitoring/input device 200 .
- the monitoring/input device 200 is detecting bodily signals
- the monitoring service 502 may detect an anomaly.
- the monitoring service 502 may send an instruction to the monitoring/input device 200 to modify its configuration from a measuring or detecting mode to an imaging mode to try to determine more information about the anomaly.
- FIG. 6 is a flowchart depicting a process 600 of using an expandable electrode set, in accordance with some examples of the present disclosure.
- the process 600 and other processes described herein are illustrated as example flow graphs, each operation of which may represent a sequence of operations that can be implemented in hardware, software, or a combination thereof.
- the operations represent computer-executable instructions stored on one or more computer-readable storage media that, when executed by one or more processors, perform the recited operations.
- computer-executable instructions include routines, programs, objects, components, data structures, and the like that perform particular functions or implement particular abstract data types.
- the order in which the operations are described is not intended to be construed as a limitation, and any number of the described operations can be combined in any order and/or in parallel to implement the processes.
- the process 600 commences operation 602 , where the electrode set is placed proximate to a part 202 of a human/anima/object to be studied. It should be understood that various aspects of the presently disclosed subject matter are described in terms of a human subject, though it should be understood that the presently disclosed subject matter is not limited to use on a human subject.
- the process 600 continues to operation 604 , where alignment markers 110 are affixed to landmarks on the part 202 or another location on the subject being studied. There may be one or more alignment markers 110 depending on the particular configuration of the electrode set 100 . As the alignment markers 110 are being placed on the particular landmarks, the connectors 104 are pulled to cause a warping of at least a portion of the electrode set 100 . This warping allows the electrode set 100 to transform from an undeployed, planar (or flat) configuration, to a deployed, three-dimensional confirmation that conforms to the general shape of the part 202 being monitored/imaged.
- the process 600 continues to operation 606 , where the measurement connectors 108 are connected to the monitoring/input device 200 .
- the monitoring/input device 200 may be executing a monitoring application or an imaging application (described in more detail in FIG. 9 , below).
- the process 600 continues to operation 608 , where the monitoring or imaging of the part 202 is commenced.
- the process 600 thereafter ends at operation 610 .
- FIG. 7 is a flowchart depicting a process 700 for manufacturing the electrode set 100 , in accordance with some examples of the present disclosure.
- the process 700 commences at operation 702 , where the electrode set 100 form is created.
- the form may be made using various processes using various materials.
- the form is the shape of the electrode set 100 structure.
- the form includes the shape associated with the connectors 104 , the alignment markers 110 , and the like.
- the form is cut from a planar layer of a base material such as polyimide.
- the base layer can be an insulative or partially conductive layer of material upon which other materials can be placed.
- the form comprises a single sheet of material, and in other examples, the form is constructed from two or more separate pieces of material.
- the form may be multiple layers of material. It should be noted that instead of operation 702 being performed in the beginning, operation 702 may be performed after or before various other operations of process 700 .
- the process 700 continues at operation 704 , where wires 302 are plated onto the form (or the base material if performed before operation 702 ).
- the wires 302 connect individual nodes 102 to the monitoring/input device 200 through the measurement leads 106 A and 106 B.
- the wires 302 may be formed using various plating or deposition technologies.
- the wires 302 may be formed from various conductive or semiconductive materials such as, but not limited to, copper, aluminum, gold, silver, and alloys thereof.
- the thickness of the wires 302 may vary, but in some examples, are between 0.3 and 0.5 ⁇ m.
- the process 700 continues to operation 706 , where the nodes 104 are affixed to the form.
- the nodes may be preformed metal discs of various conductive or semiconductive materials such as, but not limited to, copper, aluminum, gold, silver, and alloys thereof.
- the process 700 continues to operation 708 , where the nodes 104 are affixed to the wires 302 thru the pad stiffener 406 for each of the nodes 102 .
- the pad stiffeners 406 may be formed from various materials, including polyimide or other polymers that provide sufficient structure support for the connection between the wires 302 and the pads 402 .
- the process 700 ends at operation 710 .
- FIG. 8 monitoring/input device for use with the systems and methods described herein, in accordance with some examples of the present disclosure.
- FIG. 8 illustrates the monitoring/input device 200 of FIG. 2 and FIG. 5 , by way of example.
- the monitoring/input device 200 could be any computing component capable of communicating with or on a cellular network, an internet multimedia subsystem, and/or an IP network.
- One of skill in the art will recognize that the systems and methods described herein can also be used with a variety of electronic devices, such as, for example, tablet computers, desktops, servers, and other network connected devices.
- the monitoring/input device 200 can comprise several components to execute various above-mentioned functions.
- the monitoring/input device 200 can comprise memory 802 including an operating system (OS) 804 and one or more standard applications 806 .
- the standard applications 806 can include applications to control the various components of the monitoring/input device 200 .
- the standard applications 806 can also comprise a monitoring application 830 and an imaging application 832 .
- the monitoring application 830 may be instantiated to control the operation of the monitoring/input device 200 for detecting signals generated from a body.
- the control may also include the determination of which nodes receive what signals and the storage of that data.
- the imaging application 832 may be instantiated to configure the monitoring/input device 200 to act as an imaging device, whereby one or more of the nodes are energized to input electrical energy. For example, if instantiated, the imaging application 832 may cause the monitoring/input device 200 to applying a current to one or more of the nodes, record potentials of nodes not receiving a current, and constructing an image from the potentials.
- the monitoring/input device 200 or the monitoring service 502 defines a subset of nodes 102 to which a current is applied. Then monitoring/input device 200 records potentials on the nodes 102 that do not receive the current. Optionally, several subsets of the nodes 102 having different patterns are defined successively and resulting potentials are recorded successively. In other words, sets of the nodes 102 are changed and the application of current is repeated with different nodes 102 .
- the monitoring/input device 200 or the monitoring service 502 determines an image of the part 202 of the body of the subject, for instance with an image reconstruction algorithm.
- Such method is suitable for noninvasive imaging such as electrical impedance tomography (EIT), in absolute (a-EIT), time difference (td-EIT) or multifrequency (MF-EIT) mode.
- EIT electrical impedance tomography
- a-EIT absolute
- td-EIT time difference
- MF-EIT multifrequency
- Various part of the body may be imaged with this method, in particular lung, muscles, breast, cervix, brain, bladder, or limb.
- This method may be used for imaging volume variation of body parts, in particular under blood flow or perfusion.
- one or more of the pads 402 of the nodes 102 may be replaced by other types of electromagnetic energy emitters, such as an infrared, visible, or near infrared light emitting diode (LED).
- the nodes 102 may be emitters, sensors, or a coupling of an emitter/sensor.
- a coupled emitter/sensor may be used to acquire a signal in the case of a non-self-emitted physiologic signal.
- the near infrared emitters can by used in processes such as near infrared spectroscopy or optical coherence tomography.
- the standard applications 806 can also include one or more functions or operations as those described in FIGS. 1-8 , above.
- one or more of the nodes 102 may be ultrasonic transducers coupled to be used in applications such as echography applications.
- an ultrasonic transducer may be a transmitter, receiver, and/or transceiver.
- the monitoring/input device 200 can also comprise one or more processors 812 and one or more of removable storage 814 , non-removable storage 816 , transceiver(s) 818 , output device(s) 820 , and input device(s) 822 .
- the memory 802 can be volatile (such as random access memory (RAM)), non-volatile (such as read only memory (ROM), flash memory, etc.), or some combination of the two.
- the memory 802 may be used to store various data received from the electrode set 100 and/or data received from the monitoring service 502 through the network 504 .
- the memory 802 can also include the OS 804 .
- the OS 804 contains the modules and software that support basic functions, such as scheduling tasks, executing applications, and controlling peripherals.
- the OS 804 can enable the monitoring application 830 , the imaging application 832 , and provide other functions, as described above, via the transceiver(s) 818 .
- the OS 804 can also enable the monitoring/input device 200 to send and retrieve other data and perform other functions. It should be noted that one or more functions of the presently disclosed subject matter may be executed by other systems than the OS 804 , such as firmware/FPGA/ASIC.
- the monitoring/input device 200 can also comprise one or more processors 812 .
- the processor(s) 812 can be a central processing unit (CPU), a graphics processing unit (GPU), both CPU and GPU, or any other processing unit such as an application-specific integrated circuit (ASIC) or Field Programmable Gate Arrays (FPGA), by way of example and not by way of limitation.
- the monitoring/input device 200 may also include additional data storage devices (removable and/or non-removable) such as, for example, magnetic disks, optical disks, or tape. Such additional storage is illustrated in FIG. 8 by removable storage 814 and non-removable storage 816 .
- Non-transitory computer-readable media may include volatile and nonvolatile, removable and non-removable tangible, physical media implemented in technology for storage of information, such as computer readable instructions, data structures, program modules, or other data.
- the memory 802 , removable storage 814 , and non-removable storage 816 are all examples of non-transitory computer-readable media.
- Non-transitory computer-readable media include, but are not limited to, RAM, ROM, electronically erasable programmable ROM (EEPROM), flash memory or other memory technology, compact disc ROM (CD-ROM), digital versatile discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other tangible, physical medium which can be used to store the desired information and which can be accessed by the monitoring/input device 200 . Any such non-transitory computer-readable media may be part of the monitoring/input device 200 or may be a separate database, databank, remote server, or cloud-based server.
- the transceiver(s) 818 include any transceivers known in the art.
- the transceiver(s) 818 can include wireless modem(s) to facilitate wireless connectivity with other components (e.g., between the monitoring/input device 200 and the network 504 ), the Internet, and/or an intranet, as well as wireless network adapters or other capable equipment.
- the transceiver(s) 818 may also include one or more radio transceivers that perform the function of transmitting and receiving radio frequency communications via an antenna (e.g., Wi-Fi or Bluetooth®).
- the transceiver(s) 818 may include wired communication components, such as a wired modem or Ethernet port, for communicating via one or more wired networks.
- the transceiver(s) 818 can enable the monitoring/input device 200 to download files, access web applications, and provide other communications associated with the systems and methods, described above.
- the output device(s) 820 include any output devices known in the art, such as a display (e.g., a liquid crystal or thin-film transistor (TFT) display), a touchscreen, speakers, a vibrating mechanism, or a tactile feedback mechanism.
- a display e.g., a liquid crystal or thin-film transistor (TFT) display
- the output device(s) can include a screen, or display.
- the output device(s) 820 can also include speakers, or similar devices, to play sounds or ringtones when an audio call or video call is received.
- Output device(s) 820 can also include ports for one or more peripheral devices, such as headphones, peripheral speakers, or a peripheral display.
- input device(s) 822 include any input devices known in the art.
- the input device(s) 822 may include one or more components of the electrode set 100 .
- the input device(s) 822 may include a camera, a microphone, or a keyboard/keypad.
- the input device(s) 822 can include a touch-sensitive display or a keyboard to enable users to enter data and make requests and receive responses via web applications (e.g., in a web browser), make audio and video calls, and use the standard applications 806 , among other things.
- the monitoring/input device 200 may be a cellular telephone having input ports capable of receiving data from the electrode set 100 .
- the touch-sensitive display or keyboard/keypad may be a standard push button alphanumeric multi-key keyboard (such as a conventional QWERTY keyboard), virtual controls on a touchscreen, or one or more other types of keys or buttons, and may also include a joystick, wheel, and/or designated navigation buttons, or the like.
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Abstract
Description
- Acquiring electrophysiological signals is of great importance in current medical technologies. Electrical activity of heart (electrocardiogram ECG), brain (electroencephalogram EEG), nerves (electromyogram EMG) or pregnant women (fetus electrocardiogram or fECG) or other electrical measurement (electrooculography (EOG) for eyes, ERG EEG for intestine activities, and the like) are commonly recorded for diagnostic or monitoring purpose. In addition, stimulation by electric signals or imaging based on impedance measurements of a part of the body of a subject (EIT: electrical impedance tomography) are spreading quickly in medical practice. Achieving correct measurements of electrophysiological signals requires to locate precisely measuring electrodes. Correct placement of electrodes for stimulation or imaging is necessary for accurate readings.
- Similarly, when a given pathology required co deployment of electrodes (or other sensors) with specific placement and other type of skin contact sensors like light emitting diodes and photoreceptors or sensors created using Silicon integrated cells (MEMS) it is required for correct measurement to reach correct positions precisions in many medical cases.
- The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items or features.
-
FIG. 1 depicts an expandable electrode set in a non-deployed state, in accordance with some examples of the present disclosure. -
FIG. 2 depicts an electrode set in a deployed state, in accordance with some examples of the present disclosure -
FIG. 3 illustrates electrical wiring in an expandable electrode set, in accordance with some examples of the present disclosure. -
FIG. 4 is a close-up view of an example node used in an expandable electrode set, in accordance with some examples of the present disclosure. -
FIG. 5 is a schematic diagram depicting an electrode set system, in accordance with some examples of the present disclosure -
FIG. 6 is a flowchart depicting a method of using an expandable electrode set, in accordance with some examples of the present disclosure. -
FIG. 7 is a flowchart depicting a method of manufacturing an expandable electrode set, in accordance with some examples of the present disclosure. -
FIG. 8 is a depicts a component level view of a monitoring/input device for use with the systems and methods described herein, in accordance with some examples of the present disclosure. - Examples of the present disclosure can comprise systems and methods for providing and using an expandable sensor set. When using a conventional sensor set to measure three-dimensional body parts, it is often difficult to properly align the sensors at the correct position on the body (part) of a patient to try to get as accurate of a reading as possible. This often limits the use of conventional sensor sets to hospitals or other facilities in which a technician is available for the installation. Because of the need for specialists to install conventional sensor sets, the costs to use conventional sensor sets can be prohibitively expensive as well as inconvenient, this in turns create limited capacities to leverage the data that can be acquired in many medical cases. It should be noted that, while some of the figures are described in terms of installation onto a subject by a second person, the presently disclosed subject matter is not limited in that manner, as various examples of the presently disclosed subject matter may be installed by the subject themselves.
-
FIG. 1 depicts a top-down view of an expandable electrode set 100 in a non-deployed state. It should be noted that although some of the description herein is described in terms of an “electrode” or an “electrode set,” the presently disclosed subject matter is not limited to electrodes, as the description using electrodes is merely exemplary and illustrative. As used herein, “non-deployed or undeployed” means that theelectrode set 100 is not installed on a body part and “deployed” means that the electrode set 100 is partially or fully installed on a body part. Referring toFIG. 2 , theelectrode set 100 is shown in a deployed state. In the non-deployed state illustrated inFIG. 1 , the electrode set 100 is substantially flat, meaning that when placed on a flat surface, all or substantially all of a bottom surface of the electrode set 100 proximate to the flat surface will be in contact with the surface. In the deployed state illustrated inFIG. 2 , theelectrode set 100 is partially deformed to wrap around a 3D body part of a patient or subject to be studied. In some examples, the deformation may be termed “warping,” wherein both terms are interchangeable. For example,nodes connector 104E, are shown inFIG. 1 to have a distance of D1 between thenodes FIG. 2 , the distance between thenodes - Referring back to
FIG. 1 , theelectrode set 100 includesnodes 102A-102F (collectively referred to herein as the “nodes 102,” and individually the “node 102A,” the “node 102B,” and so forth) andconnectors 104A-104E (collectively referred to herein as the “connectors 104,” and individually the “connector 104A,” the “connector 104B,” and so forth). It is noted thatFIG. 1 includes additional nodes and connectors not labeled, which is merely for purposes of illustration. The internal construction of the nodes 102 and theconnectors 104 are described in more detail inFIGS. 3 and 4 . In use, the nodes 102 are used to sense (measure or detect) electrophysiological signals that are the result of electrical activity of a particular body part. It is noted that the shapes of the various components of the electrode set 100 illustrated inFIG. 1 are merely exemplary and may have different shapes depending on a particular use. For example, the nodes 102 may be circular as illustrated inFIG. 1 , but may also be ellipses, egg-shaped, squares, rectangles, and/or polygons, or combinations thereof. In some examples, the nodes 102 may be used to impart a current into the subject being tested to measure impedance. These and other uses of the nodes 102 as electro- or electromagnetic devices are considered to be within the scope of the presently disclosed subject matter. - The electrode set 100 further includes measurement leads 106A and 106B and
measurement connectors connectors 104. The measurement leads 106A and 106B have within them wires from each of the nodes 102 that run from the nodes 102 to the measurement leads 106A and 106B. The measurement leads 106A and 106B are connected to a device that measures the electrical signals from the nodes 102 (shown in more detail inFIG. 2 ). - As noted above, in conventional electrode sets, a technician or other qualified individual is often required in order to ensure that the electrode set is properly positioned on a body part. The reason for this is that the nodes that measure bodily electrical activity need to be placed at certain points on the body to get as accurate of a reading as possible. The electrode set 100 of
FIG. 1 provides various mechanisms that allow various users, including untrained people, to properly place the electrode set 100 on a body party (e.g. a head or a belly of a pregnant woman). - A first mechanism that allows for the proper placement of the electrode set 100 on a body part are
alignment markers 110A-110D (collectively referred to herein as the “alignment markers 110,” and individually the “alignment marker 110A,” the “alignment marker 110B,” and so forth). The alignment markers 110 are used by a person installing the electrode set 100 to properly align theelectrode set 100. The alignment markers 110 are configured to be put in contact with a predefined anatomical landmark on a person to be studied. The landmarks can be based on various factors, including standards defined by a medical community to place the nodes 102 so as to record correctly electrophysiological signals. Such systems exist for ECG, EEG, EMG, and/or fECG or other electrical physiological signal as well as placement of other sensors sources for other measurement technologies. However, the presently disclosed subject matter does not require the use of specific landmarks, as other locations on a body may be used and are considered to be within the scope of the presently disclosed subject matter. For example, the ears, nose, belly button, or other landmark may be used for the proper placement of theelectrode set 100. It should also be noted that the electrode set 100 is not limited to use on humans, as the electrode set 100 may be used on non-human subjects. In the example illustrated inFIG. 1 , the alignment markers 110 are located according to nasion, inion and both tragi anatomical landmarks in the international 10-20 system or variants thereof, though as mentioned herein, other landmarks may be used and are considered to be within the scope of the presently disclosed subject matter. - A person installing the electrode set 100 places and temporarily affixes (using tape or other adhesive appropriate for use on a body) the one or more alignment markers 110 on one or more locations (i.e. the landmarks). In the example illustrated in
FIG. 1 , there are four alignment markers 110, although as previously mentioned, there may be more than four or fewer than four depending on the particular configuration of the electrode set 100. When placing one of the alignment markers 110 on the landmark, the placement of the alignment marker 110 exerts a force on the node 102 closest to the alignment marker 110 throughmarker connectors 112A-112D (collectively referred to herein as the “marker connectors 112,” and individually the “marker connector 112A,” the “marker connector 112B,” and so forth). For example, the placement of thealignment marker 110C exerts a pulling force on thenode 102B through themarker connector 112C in a direction generally in line with force vector XE. Similarly, the placement of thealignment marker 110A exerts a force generally in line with force vector XN, the placement of thealignment marker 110B exerts a force generally in line with force vector XW, and the placement of thealignment marker 110D exerts a force generally in line with force vector XS. - The action of the pulling of the electrode set 100 in the direction of two or more force vectors (such as XE, XN, XW, and XS) causes the electrode set 100 to warp or deform. As used herein, “warp” refers to a material that has been deformed from a planar state (as illustrated in
FIG. 1 ) to a three-dimensional state (as illustrated by way of example inFIG. 2 ). Theelectrode set 100 is designed with materials that provide an appropriate stretch force that counters the pulling force to correctly align the nodes 102 onto the one or more landmarks. For example, an elastic force (i.e. the force that occurs when a deformed object tries to return to its original shape) that is too low may cause various nodes to be too easily pulled in a particular direction. In this example, the rigidity of the structure of the electrode set 100 and its nodes 102 andconnectors 104 is insufficient to provide a controlled and specific deployment of the nodes 102 of theelectrode set 100. In another example, if the rigidity of the structure of the electrode set 100 is too great, meaning the elastic force is relatively significant, the structure of the electrode set 100 may require heavy glues or adhesives to keep the alignment markers 110 in place and may place an undue strain on the material of the electrode set 100, among other disadvantages. - Thus, construction of the electrode set 100 and its components, especially the
connectors 104, are designed to provide a balance between rigidity and flexibility. In the example illustrated inFIG. 1 , a sinusoidal shape constructed with particular materials achieves this balance. It should be understood that the shapes and materials are examples, as other shapes and materials may be used. For example, other shapes such as spiral-shaped, double spiral-shaped, horseshoe-shaped or angular-shaped may be used. The shape of theconnectors 104 of the electrode set is designed to allow for a planar configuration when not deployed while allowing for a non-planar configuration during use. - The sinusoidal shape also allows the spacing between the nodes 102 to be changed from a first distance to one or more second distances depending on how much the
connectors 104 are pulled. The one or more second distances may be used to allow the electrode set 100 to be deployed in various uses. In an embodiment, the ratio of a first distance between two nodes linked by a connector, such as thenodes connector 104H, in the deployed configuration and the distance between the same two nodes linked by the same connector element in the undeployed configuration is greater than 1.05, and in some examples, greater than the ratios of 1.05 and up to 2.0, though greater ratios may be achievable depending on the particular materials, dimensions, and the like. - Further, the sinusoidal shape along with the predetermined elastic force provided by the
connectors 104 allow for the electrode set 100 to be used on various sizes and shapes of body parts. For example, the electrode set 100 may be used for skulls or abdomens, as well as differently shaped body parts, including those of various cultures and ethnicities. As the electrode set 100 is installed on a body part, the sinusoidal shape and the elastic force cause the electrode set 100 to deform in a predetermined manner. For example, as the electrode set 100 is deformed to fit over a body part, the elastic force and the sinusoidal shape cause the nodes 102 of the electrode set 100 to space apart at distances in the direction of the force vectors that allow for a proper placement of the nodes 102 on the locations of the body part to be measured. This means that when installed, the electrode set 100 will not have an area of nodes 102 that remain bunched together at or near pre-deformation distances and other nodes 102 that are spread too far apart at or near post-deformation distances. The consistent deformation across all force vectors allows the electrode set 100 to be used on various body sizes and shapes. During the process from the undeformed to the deformed state, the length of theconnectors 104 remain the same, meaning theconnectors 104 don't stretch, but rather, their shape changes from a sinusoidal to linear shape. - In some examples, the
connectors 104 are constructed using a polyimide, polyethylene, polyether ether ketone (PEEK), or other fully or partially insulative polymer. In some examples, the connectors 104 (including any internal components such as copper tracks or wiring) preferably have a thickness within a range of 90 μm to 200 μm, a range of 100 μm to 170 μm, and in a more preferable configuration, a range of thickness from 118 μm to 122 μm. In some examples, the thickness of theconnectors 104 is 120 μm with a tolerance of twenty percent (20%). It should be noted that the thickness of theconnectors 104 may vary depending on the particular material used in order to provide a similar elastic force. - Referring back to
FIG. 2 , also illustrated is a monitoring/input device 200. In some examples, the monitoring/input device 200 provides the electrical power to allow the nodes 102 to be used to detect electrophysiological signals produced by thepart 202 of the human being studied, e.g. the head illustrated by way of example inFIG. 2 . In the example in which the nodes 102 are being used to image thepart 202, the monitoring/input device 200 provides the electrical power through the measurement leads 106A and 106B to allow for the imaging. As illustrated, the measurement leads 106A and 106B are connected to the monitoring/input device 200 by the insertion of themeasurement connectors input device 202. The monitoring/input device 200 may record data for later transfer to a system for diagnosis/measurement and/or may have internal communication capabilities that allow the monitoring/input device 200 to transmit the data for use (explained in more detail inFIG. 5 ). -
FIG. 3 illustrates electrical wiring in the electrode set 100, in accordance with some examples of the present disclosure. Shown inFIG. 3 are themeasurement lead 106A andnodes 104. Within thenodes 104 and themeasurement lead 106A (measurement lead 106B is similarly constructed) are wires that put the nodes 102 (for example, thenode 102J inFIG. 3 ) in electrical communication with themeasurement lead 106A, illustrated in more detail inFIG. 4 . -
FIG. 4 is a close-up view of thenode 102J used in the electrode set 100, in accordance with some examples of the present disclosure. The node illustrated inFIG. 4 includes apad 402, apad stabilizer 404, and apad stiffener 406. Thepad 402 can be constructed of various conductive and semi-conductive materials including, but not limited to, copper, aluminum, stainless steel, and the like. An active area of the pad 402 (i.e. the area placed in contact or proximate to the surface of the part of the subject being studied) can comprise silver, silver chloride, electrically conductive silicone, electrically conductive polymer, or a plastic loaded with a conductive material such as carbon. Thepad 402 is illustrated as being circular in shape, but other shapes, such as, but not limited to, a spiral, a double spiral, a horseshoe, or an angular shape, may be used and are considered to be within the scope of the presently disclosed subject matter. Thepad 402 is stabilized and attached to theconnector 104R by thepad stabilizer 404. The pad stabilizer envelops at least a portion of thepad 402, though the surface of thepad 402 that is designed to be placed in contact with the skin or other surface to be measured or detected has preferably little to no material. In another example, one or more of the pads, and the pads themselves, may be constructed of magnetic conductors (such as carbon) that may be used in applications such as magnetic resonance imaging. - The
pad stiffener 406 is used to stiffen or secure the electrical connection between thepad 402 and awire 302A. Awire 302B is used by another node 102. Thewire 302A is use by a measurement device to detect electrical activity the subject being studied (the passive configuration) or, in an alternative configuration, deliver electrical energy (the active configuration). For example, in a passive configuration, thenode 402 may be used to detect electrical activity from a subject being studied. In the active configuration, thenode 402 may receive enough electrical energy from thewire 302A to allow for the imaging of a portion of the body by stimulating the subject with electrical signals. For example, a body part may be imaged by deploying thenode 102J, applying a current through thewire 302A into thepad 402, recording potentials, and reconstructing an image from the potentials of thenode 102J and other nodes 102. - The
pad 402 of thenode 102J further includes a passinghole 408. The passinghole 408 is an opening through thepad 402 and is used to allow an injection through the passinghole 408 for introducing a layer of an electroconductive material between the active area of thepad 402 and a portion of skin of the subject being studied while thepad 402 is proximate to the skin of the subject being studied. A type of electroconductive material may be gel used with EEG or ECG cup electrodes, though other types of electroconductive materials may be used and are considered to be within the scope of the presently disclosed subject matter. Thepad 402 of thenode 102J further includesorifices 410. Theorifices 410 may be used to provide a means for affixing thenode 102J in a manner similar to the passinghole 408 or may be used to allow air to escape when thenode 102J is affixed, among other uses. The passinghole 408 may also be used to determine if sufficient gel or cream is dispensed, as the cream or gel may leak through the passinghole 408 when a sufficient amount is used. It should be noted that thenode 102J may include more orfewer orifices 410 and more passingholes 408 or no passing holes 408. In alternative designs, this passing hole is not present, and the gel is dispensed under the electrode by lifting it to inject the gel. -
FIG. 5 is a schematic diagram depicting anelectrode set system 500, in accordance with some examples of the present disclosure. In various examples, the electrode set 100 may be used to monitor or measure apart 202 of a body of a human. The electrode set 100 is in electrical communication with the monitoring/input device 200. As illustrated inFIG. 2 , the electrode set 100 is connected to the monitoring/input device 200 by inserting the measurement leads 106A and 106B into the monitoring/input device 200. It is noted that the presently disclosed subject matter is not limited to removable measurement leads, as some configurations may include preinstalled measurement leads. These and other configurations are considered to be within the scope of the presently disclosed subject matter. - The
electrode set system 500 further includes amonitoring service 502 communicatively connected to the monitoring/input device 200 through anetwork 504. Thenetwork 504 may be any type of network that communicatively connects the monitoring/input device 200 to themonitoring service 502, including, but not limited to, a Wi-Fi network, a local area network, or a cellular network. One of skill in the art will recognize that the systems and methods described herein can also be used with a variety of networks. - During use, the user of the electrode set 100 installs the electrode set on a body to be monitored and/or measured. The electrode set 100 is connected to the monitoring/
input device 200. The monitoring/input device 200 is connected to themonitoring service 502. In some examples, the monitoring/input device 200 stores data locally while in use. In further examples, the monitoring/input device 200 transmits data to themonitoring service 502 while the electrode set 100 is in use or at anytime thereafter. In still further examples, themonitoring service 502 transmits instructions to the monitoring/input device 200 to configure the operation of the monitoring/input device 200. For example, while the monitoring/input device 200 is detecting bodily signals, themonitoring service 502 may detect an anomaly. Themonitoring service 502 may send an instruction to the monitoring/input device 200 to modify its configuration from a measuring or detecting mode to an imaging mode to try to determine more information about the anomaly. -
FIG. 6 is a flowchart depicting aprocess 600 of using an expandable electrode set, in accordance with some examples of the present disclosure. Theprocess 600 and other processes described herein are illustrated as example flow graphs, each operation of which may represent a sequence of operations that can be implemented in hardware, software, or a combination thereof. In the context of software, the operations represent computer-executable instructions stored on one or more computer-readable storage media that, when executed by one or more processors, perform the recited operations. Generally, computer-executable instructions include routines, programs, objects, components, data structures, and the like that perform particular functions or implement particular abstract data types. The order in which the operations are described is not intended to be construed as a limitation, and any number of the described operations can be combined in any order and/or in parallel to implement the processes. - Referring to
FIG. 6 , theprocess 600 commencesoperation 602, where the electrode set is placed proximate to apart 202 of a human/anima/object to be studied. It should be understood that various aspects of the presently disclosed subject matter are described in terms of a human subject, though it should be understood that the presently disclosed subject matter is not limited to use on a human subject. - The
process 600 continues to operation 604, where alignment markers 110 are affixed to landmarks on thepart 202 or another location on the subject being studied. There may be one or more alignment markers 110 depending on the particular configuration of theelectrode set 100. As the alignment markers 110 are being placed on the particular landmarks, theconnectors 104 are pulled to cause a warping of at least a portion of theelectrode set 100. This warping allows the electrode set 100 to transform from an undeployed, planar (or flat) configuration, to a deployed, three-dimensional confirmation that conforms to the general shape of thepart 202 being monitored/imaged. - The
process 600 continues tooperation 606, where the measurement connectors 108 are connected to the monitoring/input device 200. In some examples, the monitoring/input device 200 may be executing a monitoring application or an imaging application (described in more detail inFIG. 9 , below). - The
process 600 continues to operation 608, where the monitoring or imaging of thepart 202 is commenced. Theprocess 600 thereafter ends atoperation 610. -
FIG. 7 is a flowchart depicting aprocess 700 for manufacturing the electrode set 100, in accordance with some examples of the present disclosure. - The
process 700 commences atoperation 702, where the electrode set 100 form is created. The form may be made using various processes using various materials. The form is the shape of the electrode set 100 structure. For example, inFIG. 1 , the form includes the shape associated with theconnectors 104, the alignment markers 110, and the like. In one example, the form is cut from a planar layer of a base material such as polyimide. The base layer can be an insulative or partially conductive layer of material upon which other materials can be placed. In some examples, the form comprises a single sheet of material, and in other examples, the form is constructed from two or more separate pieces of material. In some examples, the form may be multiple layers of material. It should be noted that instead ofoperation 702 being performed in the beginning,operation 702 may be performed after or before various other operations ofprocess 700. - The
process 700 continues atoperation 704, where wires 302 are plated onto the form (or the base material if performed before operation 702). The wires 302 connect individual nodes 102 to the monitoring/input device 200 through the measurement leads 106A and 106B. The wires 302 may be formed using various plating or deposition technologies. The wires 302 may be formed from various conductive or semiconductive materials such as, but not limited to, copper, aluminum, gold, silver, and alloys thereof. The thickness of the wires 302 may vary, but in some examples, are between 0.3 and 0.5 μm. - The
process 700 continues tooperation 706, where thenodes 104 are affixed to the form. The nodes may be preformed metal discs of various conductive or semiconductive materials such as, but not limited to, copper, aluminum, gold, silver, and alloys thereof. - The
process 700 continues tooperation 708, where thenodes 104 are affixed to the wires 302 thru thepad stiffener 406 for each of the nodes 102. The pad stiffeners 406 may be formed from various materials, including polyimide or other polymers that provide sufficient structure support for the connection between the wires 302 and thepads 402. - The
process 700 ends at operation 710. -
FIG. 8 monitoring/input device for use with the systems and methods described herein, in accordance with some examples of the present disclosure.FIG. 8 illustrates the monitoring/input device 200 ofFIG. 2 andFIG. 5 , by way of example. The monitoring/input device 200 could be any computing component capable of communicating with or on a cellular network, an internet multimedia subsystem, and/or an IP network. One of skill in the art will recognize that the systems and methods described herein can also be used with a variety of electronic devices, such as, for example, tablet computers, desktops, servers, and other network connected devices. - The monitoring/
input device 200 can comprise several components to execute various above-mentioned functions. The monitoring/input device 200 can comprisememory 802 including an operating system (OS) 804 and one or morestandard applications 806. Thestandard applications 806 can include applications to control the various components of the monitoring/input device 200. In this case, thestandard applications 806 can also comprise amonitoring application 830 and animaging application 832. Themonitoring application 830 may be instantiated to control the operation of the monitoring/input device 200 for detecting signals generated from a body. The control may also include the determination of which nodes receive what signals and the storage of that data. Theimaging application 832 may be instantiated to configure the monitoring/input device 200 to act as an imaging device, whereby one or more of the nodes are energized to input electrical energy. For example, if instantiated, theimaging application 832 may cause the monitoring/input device 200 to applying a current to one or more of the nodes, record potentials of nodes not receiving a current, and constructing an image from the potentials. - In this method, the monitoring/
input device 200 or the monitoring service 502 (or another device) defines a subset of nodes 102 to which a current is applied. Then monitoring/input device 200 records potentials on the nodes 102 that do not receive the current. Optionally, several subsets of the nodes 102 having different patterns are defined successively and resulting potentials are recorded successively. In other words, sets of the nodes 102 are changed and the application of current is repeated with different nodes 102. The monitoring/input device 200 or themonitoring service 502 determines an image of thepart 202 of the body of the subject, for instance with an image reconstruction algorithm. Such method is suitable for noninvasive imaging such as electrical impedance tomography (EIT), in absolute (a-EIT), time difference (td-EIT) or multifrequency (MF-EIT) mode. Various part of the body may be imaged with this method, in particular lung, muscles, breast, cervix, brain, bladder, or limb. This method may be used for imaging volume variation of body parts, in particular under blood flow or perfusion. - In another example, one or more of the
pads 402 of the nodes 102 may be replaced by other types of electromagnetic energy emitters, such as an infrared, visible, or near infrared light emitting diode (LED). In some examples, as explained above, the nodes 102 may be emitters, sensors, or a coupling of an emitter/sensor. For example, a coupled emitter/sensor may be used to acquire a signal in the case of a non-self-emitted physiologic signal. The near infrared emitters can by used in processes such as near infrared spectroscopy or optical coherence tomography. Thestandard applications 806 can also include one or more functions or operations as those described inFIGS. 1-8 , above. In some further examples, one or more of the nodes 102 may be ultrasonic transducers coupled to be used in applications such as echography applications. As used herein, an ultrasonic transducer may be a transmitter, receiver, and/or transceiver. - The monitoring/
input device 200 can also comprise one ormore processors 812 and one or more ofremovable storage 814,non-removable storage 816, transceiver(s) 818, output device(s) 820, and input device(s) 822. In various implementations, thememory 802 can be volatile (such as random access memory (RAM)), non-volatile (such as read only memory (ROM), flash memory, etc.), or some combination of the two. Thememory 802 may be used to store various data received from the electrode set 100 and/or data received from themonitoring service 502 through thenetwork 504. - The
memory 802 can also include theOS 804. TheOS 804 contains the modules and software that support basic functions, such as scheduling tasks, executing applications, and controlling peripherals. In some examples, theOS 804 can enable themonitoring application 830, theimaging application 832, and provide other functions, as described above, via the transceiver(s) 818. TheOS 804 can also enable the monitoring/input device 200 to send and retrieve other data and perform other functions. It should be noted that one or more functions of the presently disclosed subject matter may be executed by other systems than theOS 804, such as firmware/FPGA/ASIC. - The monitoring/
input device 200 can also comprise one ormore processors 812. In some implementations, the processor(s) 812 can be a central processing unit (CPU), a graphics processing unit (GPU), both CPU and GPU, or any other processing unit such as an application-specific integrated circuit (ASIC) or Field Programmable Gate Arrays (FPGA), by way of example and not by way of limitation. The monitoring/input device 200 may also include additional data storage devices (removable and/or non-removable) such as, for example, magnetic disks, optical disks, or tape. Such additional storage is illustrated inFIG. 8 byremovable storage 814 andnon-removable storage 816. - Non-transitory computer-readable media may include volatile and nonvolatile, removable and non-removable tangible, physical media implemented in technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. The
memory 802,removable storage 814, andnon-removable storage 816 are all examples of non-transitory computer-readable media. Non-transitory computer-readable media include, but are not limited to, RAM, ROM, electronically erasable programmable ROM (EEPROM), flash memory or other memory technology, compact disc ROM (CD-ROM), digital versatile discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other tangible, physical medium which can be used to store the desired information and which can be accessed by the monitoring/input device 200. Any such non-transitory computer-readable media may be part of the monitoring/input device 200 or may be a separate database, databank, remote server, or cloud-based server. - In some implementations, the transceiver(s) 818 include any transceivers known in the art. In some examples, the transceiver(s) 818 can include wireless modem(s) to facilitate wireless connectivity with other components (e.g., between the monitoring/
input device 200 and the network 504), the Internet, and/or an intranet, as well as wireless network adapters or other capable equipment. - The transceiver(s) 818 may also include one or more radio transceivers that perform the function of transmitting and receiving radio frequency communications via an antenna (e.g., Wi-Fi or Bluetooth®). In other examples, the transceiver(s) 818 may include wired communication components, such as a wired modem or Ethernet port, for communicating via one or more wired networks. The transceiver(s) 818 can enable the monitoring/
input device 200 to download files, access web applications, and provide other communications associated with the systems and methods, described above. - In some implementations, the output device(s) 820 include any output devices known in the art, such as a display (e.g., a liquid crystal or thin-film transistor (TFT) display), a touchscreen, speakers, a vibrating mechanism, or a tactile feedback mechanism. Thus, the output device(s) can include a screen, or display. The output device(s) 820 can also include speakers, or similar devices, to play sounds or ringtones when an audio call or video call is received. Output device(s) 820 can also include ports for one or more peripheral devices, such as headphones, peripheral speakers, or a peripheral display.
- In various implementations, input device(s) 822 include any input devices known in the art. For example, the input device(s) 822 may include one or more components of the
electrode set 100. In another example, the input device(s) 822 may include a camera, a microphone, or a keyboard/keypad. The input device(s) 822 can include a touch-sensitive display or a keyboard to enable users to enter data and make requests and receive responses via web applications (e.g., in a web browser), make audio and video calls, and use thestandard applications 806, among other things. For example, the monitoring/input device 200 may be a cellular telephone having input ports capable of receiving data from theelectrode set 100. The touch-sensitive display or keyboard/keypad may be a standard push button alphanumeric multi-key keyboard (such as a conventional QWERTY keyboard), virtual controls on a touchscreen, or one or more other types of keys or buttons, and may also include a joystick, wheel, and/or designated navigation buttons, or the like. - The presently disclosed examples are considered in all respects to be illustrative and not restrictive. The scope of the disclosure is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalents thereof are intended to be embraced therein.
Claims (38)
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TW109124603A TWI770559B (en) | 2020-05-21 | 2020-07-21 | Expandable electrode set, method of measuring signals from a subject, and sensor set system |
US17/926,806 US20230200699A1 (en) | 2020-05-21 | 2021-05-21 | Expandable electrode set |
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JP2022570497A JP2023525905A (en) | 2020-05-21 | 2021-05-21 | Stretchable electrode set |
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US16/880,104 US20210361184A1 (en) | 2020-05-21 | 2020-05-21 | Expandable electrode set |
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US20130281814A1 (en) * | 2010-12-22 | 2013-10-24 | Cardioinsight Technologies, Inc. | Multi-layered sensor apparatus |
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US8660630B2 (en) * | 2006-12-27 | 2014-02-25 | Los Angeles Biomedical Research Institute At Harbor-Ucla Medical Center | ECG leads system for newborn ECG screening |
US9119533B2 (en) * | 2008-10-07 | 2015-09-01 | Mc10, Inc. | Systems, methods, and devices having stretchable integrated circuitry for sensing and delivering therapy |
TW201316950A (en) * | 2011-10-21 | 2013-05-01 | Chang-Ming Yang | Apparatus, method, and system for detecting physiological signal or electrode contact to skin |
US10022073B2 (en) * | 2015-03-20 | 2018-07-17 | Intel Corproation | Wearable apparatus with a stretch sensor |
EP3324831A1 (en) * | 2015-07-20 | 2018-05-30 | L.I.F.E. Corporation S.A. | Flexible fabric ribbon connectors for garments with sensors and electronics |
FR3061851B1 (en) * | 2017-01-19 | 2019-05-24 | Bioserenity | TEXTILE DEVICE FOR MEASURING THE ELECTRO-PHYSIOLOGICAL ACTIVITY OF A SUBJECT |
US10512770B2 (en) * | 2017-03-08 | 2019-12-24 | Halo Neuro, Inc. | System for electrical stimulation |
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US20130281814A1 (en) * | 2010-12-22 | 2013-10-24 | Cardioinsight Technologies, Inc. | Multi-layered sensor apparatus |
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