Abstract: An accessory communication control protocol can facilitate faster and more secure transmission of status updates from an accessory to a controller (or network base station). An accessory can register with a controller, where the controller can provide some subscription and key generation information to the accessory. The accessory can detect changes to characteristics of the accessory and generate a broadcast notification that includes updates to the state of the characteristic. The broadcast notification can also include a counter, a device identifier, and a key. According to timing or rules, the accessory can transmit the broadcast notification to the controller without the need to establish a secure session with the controller.

Abstract: The invention provides a method for guiding the acquisition of ultrasound data. The method begins by obtaining ultrasound data from a plurality of data acquisition planes and performing spatial registration of the data acquisition planes. A number of vessels are then identified in each data acquisition plane. A location of a vessel bifurcation is then identified based on the spatial registration of the data acquisition planes and the number of vessels in each data acquisition plane. A guidance instruction is generated based on the location of the vessel bifurcation, wherein the guidance instruction is adapted to indicate a location to obtain further ultrasound data.

Abstract: An accessory communication control protocol can facilitate faster and more secure transmission of status updates from an accessory to a controller (or network base station). An accessory can register with a controller, where the controller can provide some subscription and key generation information to the accessory. The accessory can detect changes to characteristics of the accessory and generate a broadcast notification that includes updates to the state of the characteristic. The broadcast notification can also include a counter, a device identifier, and a key. According to timing or rules, the accessory can transmit the broadcast notification to the controller without the need to establish a secure session with the controller.

Abstract: An accessory communication control protocol can facilitate faster and more secure transmission of status updates from an accessory to a controller (or network base station). An accessory can register with a controller, where the controller can provide some subscription and key generation information to the accessory. The accessory can detect changes to characteristics of the accessory and generate a broadcast notification that includes updates to the state of the characteristic. The broadcast notification can also include a counter, a device identifier, and a key. According to timing or rules, the accessory can transmit the broadcast notification to the controller without the need to establish a secure session with the controller.

Abstract: Disclosed is a patient monitor control unit (10) comprising a processor arrangement (11, 13) adapted to receive a series of ultrasound measurements received from a sensor (30) comprising at least one configurable ultrasound transducer; process said series of ultrasound measurements to obtain haemodynamic data of a patient coupled to the sensor; control a patient monitor (20) to display the obtained haemodynamic data; evaluate the obtained haemodynamic data to detect a variance in said data; and generate a reconfiguration signal for the at least one configurable ultrasound transducer, wherein the timing of said generation is a function of said evaluation. Also disclosed are a patient monitoring system, a method of operating a patient monitor control unit and a computer program product for implementing such a method.

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: There is provided a hydration state indicator. The hydration state indicator comprises a watertight shell; a semi-permeable membrane configured to permit the passage of water molecules and to block the passage of molecules of at least one solute; a water-absorbent indicator layer enclosed by the shell and the membrane; and output means configured to provide an output. The water-absorbent indicator layer has a predetermined osmotic strength. The volume of at least one part of the indicator layer is variable in dependence on the water content of the indicator layer. The output is variable in dependence on the volume of the at least one part of the indicator layer.

Abstract: The invention provides a method for guiding the acquisition of ultrasound data. The method begins by obtaining ultrasound data from a plurality of data acquisition planes and performing spatial registration of the data acquisition planes. A number of vessels are then identified in each data acquisition plane. A location of a vessel bifurcation is then identified based on the spatial registration of the data acquisition planes and the number of vessels in each data acquisition plane. A guidance instruction is generated based on the location of the vessel bifurcation, wherein the guidance instruction is adapted to indicate a location to obtain further ultrasound data.

Abstract: An accessory communication control protocol can facilitate faster and more secure transmission of status updates from an accessory to a controller (or network base station). An accessory can register with a controller, where the controller can provide some subscription and key generation information to the accessory. The accessory can detect changes to characteristics of the accessory and generate a broadcast notification that includes updates to the state of the characteristic. The broadcast notification can also include a counter, a device identifier, and a key. According to timing or rules, the accessory can transmit the broadcast notification to the controller without the need to establish a secure session with the controller.

Abstract: An accessory communication control protocol can facilitate faster and more secure transmission of status updates from an accessory to a controller (or network base station). An accessory can register with a controller, where the controller can provide some subscription and key generation information to the accessory. The accessory can detect changes to characteristics of the accessory and generate a broadcast notification that includes updates to the state of the characteristic. The broadcast notification can also include a counter, a device identifier, and a key. According to timing or rules, the accessory can transmit the broadcast notification to the controller without the need to establish a secure session with the controller.

Abstract: A client device can be configured to identify data to be communicated with a network. In some examples, the client device can determine one or more transient properties of the client device and/or receive a connection request from a host device that is connected to the network, where the connection request comprises one or more connection properties of the host device. In some instances, the client device can also be configured to determine whether the host device is capable of transmitting the data to the network based at least in part on the one or more transient properties of the client device and the one or more connection properties of the host device and/or establish a connection with the host device in accordance with determining that the host device is capable of transmitting the data to the network.

Abstract: There is provided a method of improving a measurement of the flow velocity of blood in a blood vessel of a subject, the method comprising using an ultrasound transducer to emit an ultrasound beam to measure flow velocity in a part of a body of a subject; forming a spatial time velocity profile for the part of the body from the measured flow velocity; and analyzing the spatial time velocity profile to determine a correction to the angle of the ultrasound beam with respect to the subject, the correction being based on a difference between the position of a peak in the spatial time velocity profile and the center of the spatial time velocity profile.

Abstract: An authentication process for an endpoint device uses a pair of tokens. Tokens are generated at an authentication server that maintains a data store of token states, where the states are defined to include a “normal” state sequence along which a token is expected to advance. The endpoint device can store a token pair in non-volatile local storage. To authenticate, the endpoint device can provide its stored token pair to the authentication server, which can determine whether authentication succeeds based on the states of the tokens in the token pair. After successful authentication, the authentication server can provide a new token pair to the endpoint device and advance the token states along the normal sequence. When the endpoint device confirms receipt of the new token pair, which replaces the previous token pair, the authentication server can advance the state of the tokens again.

Abstract: A controller and an accessory controllable by the controller can communicate using secure read and write procedures. The procedures can include encrypting identifiers of accessory characteristics targeted by a read or write operation as well as any data being read or written. The procedures can also include the accessory returning a cryptographically signed response verifying receipt and execution of the read or write instruction. In some instances, a write procedure can be implemented as a timed write in which a first instruction containing the write data is sent separately from a second instruction to execute the write operation; the accessory can disregard the write data if the second instruction is not received within a timeout period after receiving the first instruction.

Abstract: A monitoring apparatus for monitoring a blood pressure information of a subject is disclosed. The monitoring apparatus comprises an ultrasound transducer for emitting ultrasound waves to a volume of the subject that includes a blood vessel and for receiving ultrasound waves from said volume of the subject, and for providing a first signal on the basis of ultrasound waves received from the volume of the subject. A light source is included for emitting light to the subject and a light sensor is included for detecting light received from the subject and for providing a second signal on the basis of the light received from a skin of the subject.

Abstract: Disclosed is a patient monitor control unit (10) comprising a processor arrangement (11, 13) adapted to receive a series of ultrasound measurements received from a sensor (30) comprising at least one configurable ultrasound transducer; process said series of ultrasound measurements to obtain haemodynamic data of a patient coupled to the sensor; control a patient monitor (20) to display the obtained haemodynamic data; evaluate the obtained haemodynamic data to detect a variance in said data; and generate a reconfiguration signal for the at least one configurable ultrasound transducer, wherein the timing of said generation is a function of said evaluation. Also disclosed are a patient monitoring system, a method of operating a patient monitor control unit and a computer program product for implementing such a method.

Abstract: Apparatus and method comprising an ultrasound transmitter, for placement at a first location on the body of a subject, to emit an ultrasound pulse; an ultrasound receiver, for placement at a second location on the body, to detect an emitted ultrasound pulse; and a controller in communication with the transmitter and receiver. The controller causes an ultrasound pulse to be emitted by the transmitter; receives a measurement signal from the receiver; determines, based on the received measurement signal, a time of arrival at the receiver, T1 s of a first part of the emitted ultrasound pulse; determines, based on the received measurement signal, a time of arrival at the receiver, T2, of a second part of the ultrasound pulse; and calculates, using T1 and T2, a flow velocity of blood in a blood vessel between the first location and the second location.

Abstract: Various improvements are provided to breathing training, monitoring and/or assistance devices. A portable device is provided which optionally includes a gas canister, a feedback system for implementing pressure control, and a visual output for indicating adherence to a breathing exercise to the user. The pressure control may provide regulation of different pressures for inhalation and exhalation.

Abstract: An electrode configured to provide electrical contact with skin of a subject is provided. The electrode includes an electrode body configured to be removably coupled with the skin of the subject and to receive electrical signals from and/or transmit electrical signals to the skin of the subject, and an electrical coupling that facilitates coupling the electrode to an external computing system. The electrode body includes a conductive silicone material configured to enable uptake or diffusion of moisture from the skin of the subject over which the electrode body is disposed; and a detergent configured to facilitate a flow of ions through the conductive silicone material.

Abstract: A nozzle (12) for an oral irrigator device (10) having a guidance tip (34) with an orifice at one end, and a dynamic nozzle actuator (64) positioned within said guidance tip. The orifice (36) is configured to expel a fluid as one of a jet, a spray, or any combination thereof. The dynamic nozzle actuator (64) comprises at least one responsive material adapted for being energized and configured to implement at least one dynamic actuation of an effective channel (62) for dynamically influencing at least one of (i) a direction of fluid expelled from the orifice (36), (ii) an angle of fluid expelled from the orifice (36), (iii) a cross-sectional width of fluid expelled from the orifice (36), and (iv) any combination thereof.