Abstract: A negative pressure wound therapy device includes at least one piezoelectric pump and a control circuit. The control circuit is configured to generate a first control signal to control operation of the at least one piezoelectric pump, the control signal having a first root mean square (RMS) voltage, transmit the first control signal to the at least one piezoelectric pump, identify at least one of a change of state of the at least one piezoelectric pump or an expiration of a duration of time associated with operation of the at least one piezoelectric pump, responsive to identifying the at least one of the change of state or the expiration of the duration of time, generate a second control signal having a second RMS voltage less than the first RMS voltage, and transmit the second control signal to the at least one piezoelectric pump.

Abstract: A dressing includes a foam layer, a plurality of cores extending substantially through the foam layer, and a drape sealable over the foam layer and a wound bed. The drape is couplable to a pump operable to create a negative pressure in the substantially-airtight volume. Each core is substantially removable from the foam layer to reveal a channel through the foam layer. Each core is defined by perforations that facilitate separation of the core from the foam layer.

Abstract: A negative pressure wound therapy system includes at least one sensor coupled to a wound dressing for a wound of a patient, and a processing circuit. The at least one sensor is configured to output a measurement of the pressure in the wound dressing. The processing circuit is configured to open a sealable aperture, receive the pressure measurements in the wound dressing, calculate a rate of pressure decay, correlate the rate of pressure decay in the wound dressing to a wound dressing fluid absorbent capacity and other therapy parameters, and output the wound dressing fluid absorbent capacity and other therapy parameters to a remote electronic device.

Abstract: A wound therapy system includes a first sensor assembly, a second sensor assembly, and a processing circuit. The first sensor assembly is configured to be located at a wound treatment site on a patients body and to record physical characteristics representative of periwound tissue at the wound treatment site. The second sensor assembly is configured to be located at a healthy tissue site on the patients body contralateral to the wound treatment site and to record one or more physical characteristics representative of healthy tissue at the healthy tissue site. The physical characteristics representative of the healthy tissue are recorded concurrently with the physical characteristics representative of the periwound tissue.

Abstract: A partially transparent dressing includes a fluid management core having a first side and a second, wound-facing side. The fluid management core includes an absorbent material and a plurality of optically transparent windows. The dressing includes a barrier layer coupled to the first side and a patient interface layer coupled to the second side. A fluid communication port is disposed in the second side. An opening is disposed in the patient interface layer. The opening is configured to receive fluid from a wound.

Abstract: A secure token defines use-based access restrictions to a first user resource. The secure token is delegated to a second user. The second user redeems the secure token for access to the first user's resource. The access during redemption is constrained by the use-based access restrictions defined by the first user.

Abstract: A secure token defines use-based access restrictions to a first user resource. The secure token is delegated to a second user. The second user redeems the secure token for access to the first user's resource. The access during redemption is constrained by the use-based access restrictions defined by the first user.

Abstract: A reduced-noise pump system for use with a wearable medical device includes a pump housing. The pump system may be used with any number of different wearable medical devices, including wearable negative pressure wound therapy devices. Provided within the pump housing is a pump, a power source and one or more acoustically insulating elements. Examples of acoustically insulating elements that may be provided within the pump housing are an encasement layer, a baffle, and a pump cover. A control unit may be optionally also be provided, with the control unit being configured to under-drive the power source of the pump system in order to reduce the operating noise of the pump.

Abstract: A negative pressure wound therapy device includes at least one piezoelectric pump and a control circuit. The control circuit is configured to generate a first control signal to control operation of the at least one piezoelectric pump, the control signal having a first root mean square (RMS) voltage, transmit the first control signal to the at least one piezoelectric pump, identify at least one of a change of state of the at least one piezoelectric pump or an expiration of a duration of time associated with operation of the at least one piezoelectric pump, responsive to identifying the at least one of the change of state or the expiration of the duration of time, generate a second control signal having a second RMS voltage less than the first RMS voltage, and transmit the second control signal to the at least one piezoelectric pump.

Abstract: A valve arrangement for administering an instillation and/or negative pressure therapy through at least a first wound dressing and a second wound dressing includes a valve arrangement including a first flow path, a first valve, a second flow path, and a second valve. The first flow path extends between a source port and a first wound dressing port structured for fluid communication with the first wound dressing. The first valve is positioned in the first flow path. The second flow path extends between the source port and a second wound dressing port structured for fluid communication with the second wound dressing. The second valve is positioned in the second flow path.

Abstract: A negative pressure wound therapy system includes at least one sensor coupled to a wound dressing for a wound of a patient, and a processing circuit. The at least one sensor is configured to output a measurement of the pressure in the wound dressing. The processing circuit is configured to open a sealable aperture, receive the pressure measurements in the wound dressing, calculate a rate of pressure decay, correlate the rate of pressure decay in the wound dressing to a wound dressing fluid absorbent capacity and other therapy parameters, and output the wound dressing fluid absorbent capacity and other therapy parameters to a remote electronic device.

Abstract: A dressing includes a foam layer, a plurality of cores extending substantially through the foam layer, and a drape sealable over the foam layer and a wound bed. The drape is couplable to a pump operable to create a negative pressure in the substantially-airtight volume. Each core is substantially removable from the foam layer to reveal a channel through the foam layer. Each core is defined by perforations that facilitate separation of the core from the foam layer.

Abstract: A secure token defines use-based access restrictions to a first user resource. The secure token is delegated to a second user. The second user redeems the secure token for access to the first user's resource. The access during redemption is constrained by the use-based access restrictions defined by the first user.

Abstract: A method for authentication includes receiving a log-in request at a first client computer, and capturing user information with the request. The method includes capturing an image of the user, and sending a request for authentication, including the user information and image, to an authentication server. The method includes determining a representative user based on the user information, and determining an authorizing agent responsible for authorizing the representative user. The method includes sending the authentication request to a client computer associated with the authorizing agent, and providing verified identification information of the representative user along with the request so that the authorizing agent can perform authentication of the requesting user based on the user information, the captured image, and the verified identification information.

Abstract: A method for authentication includes receiving a log-in request at a first client computer, and capturing user information with the request. The method includes capturing an image of the user, and sending a request for authentication, including the user information and image, to an authentication server. The method includes determining a representative user based on the user information, and determining an authorizing agent responsible for authorizing the representative user. The method includes sending the authentication request to a client computer associated with the authorizing agent, and providing verified identification information of the representative user along with the request so that the authorizing agent can perform authentication of the requesting user based on the user information, the captured image, and the verified identification information.

Abstract: A system and method for occluding potential entrapment zones in a bed. The system may include a head-end assembly with a head-end cover enclosing a head-end pad, and a foot-end assembly with covers enclosing pads. The system may further include a pair of walls extending between the head-end assembly and the foot-end assembly. The walls may include inflatable members.

Abstract: A system and method for occluding potential entrapment zones in a bed. The system includes a head-end assembly with a head-end cover enclosing a head-end pad and a pair of reinforcing end members. The system also includes a torso assembly, a leg assembly and a foot-end assembly with covers enclosing pads and reinforcing members.

Abstract: A system and method for occluding potential entrapment zones in a bed. The system includes a head-end assembly with a head-end cover enclosing a head-end pad, and a torso assembly with a pair of covers each enclosing a pair of pads. The system also includes a leg assembly with a cover enclosing pads and a foot-end assembly with covers enclosing pads. The system further includes multiple sets of coupling members that couple the covers together.

Abstract: A system and method for occluding potential entrapment zones in a bed. The system may include a head-end assembly with a head-end cover enclosing a head-end pad, and a foot-end assembly with covers enclosing pads. The system may further include a pair of walls extending between the head-end assembly and the foot-end assembly. The walls may include inflatable members.