WO2021059205A1 - Systèmes et procédés d'alimentation électrique pour un système de thérapie - Google Patents

Systèmes et procédés d'alimentation électrique pour un système de thérapie Download PDF

Info

Publication number
WO2021059205A1
WO2021059205A1 PCT/IB2020/058961 IB2020058961W WO2021059205A1 WO 2021059205 A1 WO2021059205 A1 WO 2021059205A1 IB 2020058961 W IB2020058961 W IB 2020058961W WO 2021059205 A1 WO2021059205 A1 WO 2021059205A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
power
npwt system
npwt
charge
Prior art date
Application number
PCT/IB2020/058961
Other languages
English (en)
Inventor
Christopher Brian Locke
Justin Alexander Long
Original Assignee
Kci Licensing, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kci Licensing, Inc. filed Critical Kci Licensing, Inc.
Publication of WO2021059205A1 publication Critical patent/WO2021059205A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/962—Suction control thereof having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/915—Constructional details of the pressure distribution manifold
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/16—General characteristics of the apparatus with back-up system in case of failure

Definitions

  • the present invention relates generally to the field of wound therapy systems and devices, and more particularly to a rechargeable wearable negative pressure wound therapy system.
  • Wearable therapy systems can be used for treating lower acuity and severity wounds.
  • Wearable therapy systems are designed to be worn under the clothes and to give the patient a discrete therapy option.
  • wearable therapy systems may include substantially silent pump systems. These pump systems are powered by a power supply system.
  • the power supply system provides continuously power the wearable therapy system. It is advantageous to have the power supply system remotely charged so that the patient does not need to wait and sit by a power source for charging.
  • the NPWT system includes a power system.
  • the power system is configured to provide power to the wearable NPWT system, and can include a first battery and a second battery.
  • the first battery may be removably coupled with the NPWT system.
  • the second battery may be integrated within the NPWT system.
  • the second battery can be configured to provide electrical power for the NPWT system in response to the first battery being removed from the NPWT system or in response to a charge level of the first battery decreasing below a threshold level.
  • the power system can include a first battery and a second battery.
  • the first battery may be removably coupled with the therapy device.
  • the first battery can be configured to output electrical energy at a first voltage level to operate the therapy device.
  • the second battery can be integrated with the therapy device.
  • the second battery can be configured to provide electrical power to operate the therapy device in response to the first battery being removed from the therapy device or in response to a charge level of the first battery decreasing below a threshold level.
  • the first battery is configured to output at a second voltage level to charge the second battery when the second battery is below a predetermined voltage level.
  • the method can include providing power from a first battery at a first voltage level to operate a negative pressure pump to draw a negative pressure at a dressing.
  • the method can further include providing power from a second battery on the dressing to operate the negative pressure pump to draw a negative pressure at the dressing in response to removal of the first battery or in response to a charge level of the first battery decreasing below a predetermined threshold level.
  • the method can further include charging the second battery using the first battery in response to a state of charge or a voltage output of the second battery being below a corresponding threshold level.
  • the first battery can output power at a second voltage level to charge the second battery.
  • FIG. 1 is a diagram of a wearable NPWT system according to some embodiments.
  • FIG. 2 is a flow diagram of a process for operating a wearable NPWT system, according to some embodiments.
  • FIG. 3 is a block diagram of the wearable NPWT system of FIG. 1 including a control system, according to some embodiments.
  • FIG. 4 is a table that can be used to select batteries for the NPWT system of FIG. 1, according to some embodiments.
  • FIG. 5 is a graphical user interface (GUI) of the NPWT system of FIG. 1 showing a dressing leak notification, according to some embodiments.
  • GUI graphical user interface
  • FIG. 6 is a GUI of the NPWT system of FIG. 1 showing a full dressing notification, according to some embodiments.
  • FIG. 7 is a GUI of the NPWT system of FIG. 1 showing a low battery notification, according to some embodiments.
  • FIG. 8 is a GUI of the NPWT system of FIG. 1, according to some embodiments.
  • FIG. 9 is a GUI of the NPWT system of FIG. 1 showing a low battery notification, according to some embodiments.
  • FIG. 10 is a GUI of the NPWT system of FIG. 1 showing a prompt to enter a serial number, according to some embodiments.
  • FIG. 11 is a GUI of the NPWT system of FIG. 1, showing various notifications, according to some embodiments.
  • FIG. 12 is a flow diagram of a process for performing NPWT, according to some embodiments.
  • a NPWT system includes a controller, and a distributed power system having a primary or first battery, and a secondary or second battery.
  • the first battery and the second battery can be electrically coupled with each other such that the primary battery and the secondary battery can exchange electrical power (e.g., the primary battery may charge the secondary battery).
  • the first or the primary battery is electrically and physically removable or de-coupleable from the NPWT system.
  • the NPWT system can include a pump that is configured to draw a negative pressure at a wound site.
  • the NPWT system can include a wound dressing that is configured to sealingly couple with skin at the wound site to define a sealed inner volume that includes the wound.
  • the pump can be fluidly coupled with the sealed inner volume through one or more tubular members such that the pump can draw a negative pressure at the wound site.
  • the primary battery may be configured to provide power for the controller, the pump, or any components of the NPWT system that require electrical power to operate.
  • the primary battery is also configured to charge the secondary battery (e.g., through circuitry) if a charge level of the secondary battery is below a predetermined level (e.g., in response to the secondary battery having a charge level that is below the predetermined level).
  • the primary battery may have a larger charge capacity than the secondary battery such that the primary battery is used by the NPWT system when it is electrically coupled.
  • the primary battery may be electrically de-coupled from the NPWT system and recharged in a charging station, plugged into a wall, etc., or otherwise electrically coupled with an electrical power source.
  • the NPWT system can include various indicators (e.g., light emitting devices, sound emitting devices, etc.) configured to provide a visual and/or an aural alert to the patient when the primary battery should be charged.
  • the controller can be configured to monitor a state of charge of the primary battery and notify the patient when a charge level of the primary battery is below a predetermined threshold value (e.g., a fully depleted state, a completely discharged state, 20% charge remaining, 30% charge remaining, 10% charge remaining, etc.).
  • the controller can be configured to operate the various indicators to notify the patient when the primary battery should be recharged.
  • the controller operates the indicators to indicate a state of charge of the primary battery to the patient and/or provides an alert or notification when the primary battery should be recharged.
  • the patient may remove (e.g., detach, de-couple, remove, etc.) the primary battery and charge the primary battery using any of the systems or devices described herein.
  • the controller may monitor a connection status of the primary battery and can detect when the primary battery is removed.
  • the NPWT system may draw electrical power from the secondary battery so that the NPWT can continue even when the primary battery is disconnected.
  • the secondary battery may function as a backup power source.
  • the secondary battery can be sized and rated such that the secondary battery can provide electrical power for the NPWT system over a time interval required to charge the primary battery.
  • the secondary battery may be sized such that the primary battery can provide electrical power for at least 1 hour.
  • the secondary battery is sized such that the secondary battery can provide electrical power for the NPWT system over a time duration required to charge the primary battery from a first state of charge (e.g., 0% charge remaining, 10% charge remaining, etc.) to a second state of charge (e.g., fully charged, 100% charge remaining, etc.).
  • a first state of charge e.g., 0% charge remaining, 10% charge remaining, etc.
  • a second state of charge e.g., fully charged, 100% charge remaining, etc.
  • the primary battery can be configured to charge the secondary battery.
  • the secondary battery may be fully re-charged by the primary battery so that when the primary battery is later removed again for recharging, the secondary battery can power the NPWT system.
  • the NPWT system is configured to operate in a normal mode and a power saving mode.
  • the controller can be configured to monitor the connection status of the primary battery and transition the NPWT system between the normal mode and the power saving mode based on the connection status of the primary battery. For example, when the primary battery is connected with the NPWT system, the NPWT system may operate in the normal mode. However, when the primary battery is removed from the NPWT system, the NPWT system may operate in the power saving mode.
  • the controller monitors a state of charge of the secondary battery in addition to a connection status of the primary battery and transitions the NPWT system between the normal mode and the power saving mode based on both the connection status of the primary battery and the state of charge of the secondary battery. In this way, the controller may transition the NPWT system from the normal mode to the power saving mode when the state of charge of the secondary battery drops below a threshold level (e.g., 50% charge remaining) and if the primary battery is removed from the NPWT system. In other embodiments, the controller also monitors the state of charge of the primary battery and can transition the NPWT system between the normal mode and the power saving mode based on the state of charge of the primary battery.
  • a threshold level e.g. 50% charge remaining
  • the controller may transition the NPWT system from the normal mode to the power saving mode when the state of charge of the primary battery drops below a predetermined level.
  • the controller can also transition the NPWT system between the normal mode and the power saving mode based on a user input.
  • the NPWT system can be configured to receive user inputs to transition between the power saving mode and the normal mode from one or more buttons, switches, levers, wireless communications, a user interface, a human machine interface, etc. The controller can receive these user inputs and transition the NPWT system between the power saving mode and the normal mode based on the user inputs.
  • the NPWT system can be a wearable NPWT system that is configured to be worn underneath the patient’s clothing.
  • this facilitates wearing the NPWT system discreetly.
  • the NPWT system includes a substantially silent pump to facilitate improved concealability and discreetness.
  • such pumps are advantageous since they are quieter and can be worn discreetly, such pumps may be less mechanically efficient, thereby requiring a greater amount of power.
  • a NPWT system that uses a silent pump which requires a higher amount of power may require a power system with higher energy density or multiple batteries (e.g., the primary battery and the secondary battery).
  • the primary battery and the secondary battery can be used to decrease the likelihood that the NPWT system will ever run out of power completely.
  • the secondary battery can be selectably used or discharged based on the connection status of the primary battery.
  • this facilitates a completely portable NPWT system that does not need to be plugged into the wall when the primary battery needs to be recharged.
  • the secondary battery can be used to continue to provide negative pressure to the wound, even when the primary battery is removed for recharging.
  • Using the primary battery and the secondary battery can also reduce a mass and capacity of the power system for a lower energy density that is suitable for integrated wearable devices.
  • the secondary battery can provide an emergency power level in the case that a user or patient forgets or is unable to charge the primary battery.
  • the NPWT system is a disposable NPWT system.
  • FIG. 1 a diagram of a wearable NPWT system 100 is shown according to an exemplary embodiment.
  • the NPWT system 100 is configured to treat wound by applying or drawing a negative pressure at a wound site 116.
  • the NPWT system 100 is powered by a power supply system.
  • the power supply system includes a primary battery 102, a secondary battery 104 and circuitry connected between the primary battery 102 and the secondary battery 104.
  • the circuitry may facilitate charging the secondary battery 104 with electrical energy from the primary battery 102 (e.g., when the primary battery 102 is disconnected).
  • the NPWT system 100 also includes a controller 106, a pump 118, a first port connection 112, a tube 108 (e.g., a conduit, a pipe, a tubular member, a hose, etc.), a second port connection 114, and a wound dressing 110.
  • the wound dressing 110 can be disposed on the wound site 116.
  • the wound dressing 110 is at least partially sealed to the wound site 116 so that an enclosed and sealed space is formed between the wound dressing 110 and the wound site 116.
  • the wound dressing 110 can be configured to sealingly couple with surrounding skin (e.g., periwound skin) to facilitate a fluidly sealed connection between the wound dressing 110 and the wound site 116.
  • the wound dressing 110 can be fluidly coupled with one end of the tube 108 through the second port connection 114. An other or opposite end of the tube 108 is fluidly coupled with the pump 118 through the first port connection 112.
  • the first port connection 112 includes a gel-blocking filter.
  • the pump 118 is configured to pump air and/or fluid out of the enclose space between the wound dressing 110 and the wound site 116 through the tube 108 in order to generate a negative pressure on the wound site 116 to facilitate healing of the wound site 116.
  • the pump 118 can be any suitable type of pump that generates desired air pressure, such as a displacement pump, a shockwave pump, a piezoelectric pump, a suction pump, etc.
  • the pump 118 is powered by the power supply system.
  • the power supply system uses the primary battery 102 to supply power when the primary battery 102 is above a threshold level.
  • the power supply system uses the secondary battery 104 to supply power when the primary battery 102 is exhausted (e.g., the battery level is below the threshold level) or removed (e.g., disconnected for re charging purposes).
  • the primary battery 102 is removably coupled with the a housing of the NPWT system 100 such that the primary battery 102 can be removed by a user, a technician, etc., for recharging purposes. In this way, the primary battery 102 may be selectably or removably electrically coupled with the controller 106, the secondary battery 104, and the pump.
  • the controller 106 is configured to monitor a power level, a charge level, an energy level, etc., of the primary battery 102.
  • the controller 106 may operate one or more visual alert devices and/or aural alert devices (e.g., light emitting diodes, speakers, etc.) to indicate a charge level in the primary battery 102.
  • the NPWT system 100 can include multiple light emitting diodes or multi-color light emitting diodes that indicate the charge level of the primary battery 102.
  • the controller 106 can operate the light emitting diodes to indicate the charge level of the primary battery 102. In this way, the user may be notified when the charge level of the primary battery 102 decreases below the threshold level.
  • the threshold level may indicate that the primary battery 102 should be re-charged, thereby returning the primary battery 102 to a fully charged state.
  • the user may remove the primary battery 102 from the NPWT system 100 for external charging, thereby electrically disconnecting or decoupling the primary battery 102 from the NPWT system 100.
  • the primary battery 102 can be removed from the NPWT system 100 for external charging (e.g., in a charging station, a battery charging rack, by being plugged into a wall outlet, etc.).
  • the NPWT system 100 may draw power and/or electrical energy from the secondary battery 104 to operate.
  • the secondary battery 104 can provide the controller 106 with electrical power for operation.
  • the secondary battery 104 can provide the pump with electrical power such that the NPWT system 100 can operate even when the primary battery 102 is electrically disconnected (e.g., for recharging).
  • the secondary battery 104 can be configured to provide electrical power to any of the components of the NPWT system 100 for operation when the primary battery 102 is electrically disconnected.
  • the secondary battery 104 has a specific charge level or has an energy capacity such that the secondary battery 104 can provide the NPWT system 100 with electrical power for normal operation a predetermined time duration t temp .
  • the time duration t temp is an amount of time that the secondary battery 104 can provide the NPWT system 100 with electrical power.
  • the secondary battery 104 can have a charge capacity or an electrical energy capacity P secon d -
  • the NPWT system 100 can consume electrical energy provided by the secondary battery 104 at a specific rate P operate-
  • the ra t e of power consumption of the NPWT system 100 may be a constant value, a relatively constant value, a non-constant value, etc.
  • the rate of power consumption of the NPWT system 100 may depend on the operation of the pump (e.g., a rate at which the negative pressure is drawn, a magnitude of the negative pressure produced by the pump, etc.), a state of deterioration of either of the primary battery 102 and/or the secondary battery 104, a mode of NPWT performed by the NPWT system 100 (e.g., a normal mode, a drawdown mode, a power saving mode, etc.), as well as additional operations that may be performed by the NPWT system 100 (e.g., wireless communications, operating light emitting devices, etc.).
  • a mode of NPWT performed by the NPWT system 100 e.g., a normal mode, a drawdown mode, a power saving mode, etc.
  • additional operations e.g., wireless communications, operating light emitting devices, etc.
  • the power drawn by the NPWT system 100 is a time rate of power consumption of the NPWT system 100 P ope rate F° r example, the power or charge level of the secondary battery 104 over time may be represented by the equation: where P seC ond ( is the power capacity of the secondary battery 104 at time t, P seconci (t 0 ) is the initial power capacity of the secondary battery 104 at an initial time t 0 , and P op erate( is a rate of discharge (e.g., a rate of power consumption of the NPWT system 100) of the secondary battery 104 as a function of time. If the secondary battery 104 is initially at the maximum capacity of the secondary battery 104 Psecond, max Psecond O ) — Psecond, max
  • the primary battery 102 is configured to charge at a charging rate P charge
  • the primary battery 102 can have a charge capacity, a power capacity, an electrical energy capacity, etc., referred to as P pr imary,max I n
  • the capacity P pr imary,max of the primary battery 102 is such that the primary battery 102 can power the NPWT system 100 for 12 hours.
  • the primary battery 102 can be charged at the charging rate P charge until the primary battery 102 is fully charged (e.g., until a current power or charge level of the primary battery 102 P pr imary is substantially equal to the capacity P pr imary, max) ⁇ I' 1
  • an amount of time that is required to charge the primary battery 102 from substantially a fully depleted or fully discharged state to the fully charged state is t charge
  • the time t temp m ay be greater than the time t charge required for the primary battery 102 to fully charge.
  • the secondary battery 104 is sized such that the secondary battery 104 can provide the NPWT system 100 with operational power for an amount of time that is greater than the time to charge the primary battery 102. In this way, even if the primary battery 102 is fully depleted or discharged, the secondary battery 104 can provide power for operation of the NPWT system 100 while the primary battery 102 is charged. Advantageously, this reduces the likelihood that the NPWT system 100 will shutdown or become in-operational due to low battery power or due to the primary battery 102 running out of electrical energy. Even if the primary battery 102 is removed for charging or runs out of electrical energy, the NPWT system 100 can still operate using power supplied by the secondary battery 104.
  • the primary battery 102 can be used to charge the secondary battery 104 when the secondary battery 104 is below a threshold level.
  • the NPWT system 100 when the primary battery 102 supplies power to the NPWT system 100, the NPWT system 100 operates in a normal operation mode (e.g., normal-power mode).
  • the secondary battery 104 when the secondary battery 104 supplies power to the NPWT system 100, the NPWT system 100 operations in a low power or power saving mode.
  • the low power mode can include adjusting the negative pressure applied or produced at the wound site 116, reducing or restricting the operation of various devices of the NPWT system 100 (e.g., wireless communications, lighting devices, sound emitting devices, etc.), etc.
  • the negative pressure drawn at the wound site 116 may be 75 mmHg +/- 25 mmHg during the low power mode.
  • the NPWT system 100 may be configured to handle a leak rate of up to 10 cc/minute for 8 hours and draw the negative pressure of 75 mmHg +/- 25 mmHg during the low power mode.
  • the secondary battery 104 may have a battery capacity of 290 milliamp Hours (mAh) to achieve these characteristics.
  • the NPWT system 100 can draw a negative pressure of 125 mmHg +/- 10 or 25 mmHg for 18 hours during the normal mode.
  • the primary battery 102 can have a battery capacity of 1150 mAh to achieve these characteristics.
  • the controller 106 is configured to determine an operational mode to operate the NPWT system 100 during certain time periods. For example, during night the controller 106 may control the NPWT system 100 to operate in the low power mode using the secondary battery 104, so that the primary battery 102 can be removed from the NPWT system 100 for charging and/or for reducing the weight of the NPWT system 100 according to some embodiments.
  • the primary battery 102, the secondary battery 104, and the circuitry that electrically couples the primary battery 102 with the secondary battery 104 may define or be referred to as a power system.
  • the patient when using the NPWT system 100, does not need to have cables attached to the outlet to charge the power system especially during sleep or restart the system when the battery is removed for charging.
  • the two battery power system also eliminates the risk and inconvenience of a user wearing a large battery during sleep.
  • the secondary battery 104 may have a small capacity compared to the primary battery 102. Specifically, the capacity of the secondary battery 104 P se cond,max may be less than the capacity of the primary battery 102 P pr imary,max I n some embodiments, the primary battery 102 is an externally rechargeable 5V battery pack with a capacity of 1150 mAh. In some embodiments, the secondary battery 104 is an integrated in the NPWT system 100 and internally rechargeable 3.7 V battery pack with a capacity of 290 mAh. The primary battery 102 may have a larger size compared to the secondary battery 104. The primary battery 102 may be contained in a robust polymer housing that prevents overheat of the NPWT system 100. The polymer housing may provide a predetermined degree of resistance to fire.
  • the primary battery 102 can be easily removed from the NPWT system 100 and be remotely recharged via any suitable wire and/or wireless charging mechanisms (e.g., an integrated microUSB connector, QI charge coil, etc.)
  • the controller 106 controls the power system to use the secondary battery 104 to operate the NPWT system 100 in a low-power mode.
  • the controller 106 controls the power system to use the primary battery 102 to charge the secondary battery 104 and to operate the NPWT system 100 in a normal -power mode.
  • the controller 106 may use the secondary battery 104 to operate the NPWT system 100 in the low-power mode and the controller 106 may inform the user that the NPWT system 100 is running in a lower-power mode and that the primary battery 102 should be charged.
  • the NPWT system 100 can be reused with multiple dressings with the same patient and may have a life of 30 days up to several months.
  • the NPWT system 100 operates in a boost mode when the NPWT system is first initiated which requires the power system drives at a higher voltage 18V to achieve quicker dressing draw down.
  • the NPWT system 100 may switch operation to the normal operation mode.
  • the NPWT system 100 can have a desired or setpoint pressure level on the dressing between 115 mmHg and 135 mmHg.
  • the NPWT system 100 can have a desired or setpoint pressure on the dressing between 50 mmHg and 100 mmHg.
  • the power system may use the primary battery 102 and the secondary battery 104 to operate the NPWT system 100 in the boost mode according to some embodiments.
  • FIG. 3 shows a block diagram of the NPWT system 100 that can be used with the NPWT system 100.
  • the control system 300 includes the controller 106, the pump 118, and a power system 122.
  • the power system 122 can include the primary battery 102, the secondary battery 104, and circuitry 120 configured to electrically couple the primary battery 102 with the secondary battery 104.
  • the circuitry 120 can also electrically couple the primary battery 102 and the secondary battery 104 with the pump 118 and/or the controller 106 such that the pump 118 and/or the controller 106 (or more generally, the NPWT system 100 or any components of the NPWT system 100) can draw power from the primary battery 102 and/or the secondary battery 104.
  • controller 106 can include a communications interface.
  • the communications interface may facilitate communications between controller 106 and other applications, devices, components, etc. (e.g., the pump 118, the circuitry 120, the primary battery 102, the secondary battery 104, the display devices 316, a user interface, a remote device, a portable device, a personal computing device, etc.) for allowing receiving and sending data.
  • the communications interface may also facilitate communications between controller 106 and a personal computer device such as a tablet, a smartphone, a laptop computer, etc.
  • the communications interface can be or include wired or wireless communications interfaces (e.g., jacks, antennas, transmitters, receivers, transceivers, wire terminals, etc.) for conducting data communications with the power system 122 or other external systems or devices.
  • communications via the communications interface can be direct (e.g., local wired or wireless communications) or via a communications network (e.g., a WAN, the Internet, a cellular network, Bluetooth, etc.).
  • the communications interface can include an Ethernet card and port for sending and receiving data via an Ethernet-based communications link or network.
  • the communications interface can include a Wi-Fi transceiver, a Bluetooth transceiver, a LoRa transceiver, a Li-Fi transceiver, a Zigbee Transceiver, etc., for communicating via a wireless communications network.
  • the communications interface can include cellular or mobile phone communications transceivers.
  • the communications interface is a power line communications interface. In other embodiments, the communications interface is an Ethernet interface.
  • the controller 106 is shown to include a processing circuit 302 including a processor 304 and memory 306.
  • the processing circuit 302 can be communicably connected to the communications interface such that the processing circuit 302 and the various components thereof can send and receive data via the communications interface.
  • the processor 304 can be implemented as a general purpose processor, an application specific integrated circuit (ASIC), one or more field programmable gate arrays (FPGAs), a group of processing components, or other suitable electronic processing components.
  • ASIC application specific integrated circuit
  • FPGAs field programmable gate arrays
  • the memory 306 (e.g., memory, memory unit, storage device, etc.) can include one or more devices (e.g., RAM, ROM, Flash memory, hard disk storage, etc.) for storing data and/or computer code for completing or facilitating the various processes, layers and modules described in the present application.
  • the memory 306 can be or include volatile memory or non-volatile memory.
  • the memory 306 can include database components, object code components, script components, or any other type of information structure for supporting the various activities and information structures described in the present application.
  • the memory 306 is communicably connected to the processor 304 via the processing circuit 302 and includes computer code for executing (e.g., by the processing circuit 302 and/or the processor 304) one or more processes described herein.
  • the controller 106 is shown to include a power interface 314.
  • the power interface 314 can be configured to facilitate powering the controller 106 with power drawn from the primary battery 102 and/or the secondary battery 104.
  • the power interface 314 is electrically coupled with the circuitry 120 through a wired connection (e.g., any of, or any combination of a cord, a cable, a wire, etc.).
  • the power interface 314 can electrically couple with the wired connection to facilitate the transfer of electrical energy from the primary battery 102 and the secondary battery 104 to the controller 106.
  • the power system 122 includes the primary battery 102 and the secondary battery 104 and can be configured to selectably provide electrical energy (e.g., power) from the primary battery 102 and the secondary battery 104.
  • the circuitry 120 includes a switch and is configured to transition between a first state and a second state in response to control signals.
  • the primary battery 102 may provide electrical energy for the pump 118, the controller 106, the display devices 316, etc., or more generally, for any components of the NPWT system 100 that consume electrical energy.
  • the secondary battery 104 may provide electrical energy for the pump 118, the controller 106, the display devices 316, etc., or more generally, for any components of the NPWT system 100 that consume electrical energy.
  • the circuitry 120 can be electrically connected with the controller 106 through the power interface 314 (e.g., through a wired connection). Likewise, the circuitry 120 can be electrically coupled with the pump 118 through a wired connection.
  • the pump 118, the controller 106, and the display devices 316 may consume the electrical energy from the power system 122 and use the electrical energy for their respective operations. For example, the pump 118 consumes the electrical energy and uses the electrical energy to draw the negative pressure at the wound site 116.
  • the pump 118 can receive control signals from the controller 106 that cause the pump 118 to operate to draw a particular negative pressure (e.g., a setpoint negative pressure at the wound site 116).
  • the controller 106 includes a negative pressure manager 310, a mode selection manager 312, and a battery manager 308.
  • the battery manager 308 is configured to operate the circuitry 120 to selectably provide power to the NPWT system 100 from the primary battery 102 and/or the secondary battery 104, according to some embodiments.
  • the battery manager 308 can receive feedback from the circuitry 120 and/or from the primary battery 102 and the secondary battery 104 directly.
  • the feedback can include a state of charge, a power level, a voltage output, a current output, etc., or any other parameters of the batteries 102-104 that can be measured that indicates an amount of electrical energy remaining in the batteries 102-104.
  • the batery manager 308 can receive the capacity or state of charge P se cond,max fr° m the secondary batery 104 and the capacity or state of charge P pr imary,max f rom the primary batery 102. In some embodiments, the batery manager 308 is configured to compare the batery levels to their respective threshold values to determine if the secondary batery 104 should be used as a power source or if the secondary batery 104 should be charged by the primary batery 102. In some embodiments, the batery manager 308 is also configured to receive an indication or a connection status of the primary batery 102 (e.g., directly from the primary batery 102 or from the circuitry 120).
  • the batery manager 308 is configured to monitor the connection status of the primary batery 102 in real time, as well as the batery level (e.g., the capacity or the state of charge) of the primary batery 102. In response to detecting that the primary batery 102 has been disconnected from the NPWT system 100 (e.g., disconnected from the circuitry 120), the batery manager 308 may determine that the secondary batery 104 should be used as the power source of the NPWT system 100 and may generate control signals. The batery manager 308 can then provide the control signals to the circuitry 120 so that the NPWT system 100 draws electrical energy from the secondary batery 104.
  • the batery level e.g., the capacity or the state of charge
  • the batery manager 308 is configured to monitor the state of charge or the batery level of the primary batery 102.
  • the batery manager 308 may compare a current state of charge or batery level of the primary batery 102 to a corresponding threshold value (e.g., 20% remaining charge, 10% remaining charge, etc.) and may generate the control signals for the circuitry 120 in response to the batery level of the primary batery 102 decreasing below the corresponding threshold value.
  • a corresponding threshold value e.g. 20% remaining charge, 10% remaining charge, etc.
  • the batery manager 308 operates the circuitry 120 such that the NPWT system 100 draws electrical power or electrical energy from the secondary batery 104 (e.g., by generating control signals and providing the control signals to the circuitry 120).
  • the batery manager 308 is configured to monitor the batery level or the state of charge of the secondary batery 104 to determine if the secondary batery 104 should be charged by the primary batery 102. If the state of charge or the batery level of the secondary batery 104 decreases below a minimum allowable value, the batery manager 308 may generate control signals and provide the control signals to the power system 122 (e.g., to the circuitry 120) such that the secondary batery 104 charges from the primary batery 102.
  • the power system 122 e.g., to the circuitry 120
  • the batery manager 308 may monitor the state of charge of the secondary batery 104 in real time and operate the circuitry 120 or the primary batery 102 and the secondary batery 104 to charge the secondary batery 104 from the primary batery 102.
  • the batery manager 308 can provide the mode selection manager 312 with the batery level, capacity, state of charge, etc., of either or both of the primary batery 102 and the secondary batery 104.
  • the batery manager 308 can also provide the mode selection manager 312 with the connection status of the primary batery 102 and/or the secondary batery 104.
  • the mode selection manager 312 can use the batery level of the primary batery 102 and/or the secondary batery 104 to determine which of multiple states into which the NPWT system 100 should transition. For example, the mode selection manager 312 can select from multiple predetermined modes of operation. Specifically, the mode selection manager 312 can select between the normal mode and the low power or power saving mode. The mode selection manager 312 can determine that the NPWT system 100 should be transitioned into the low power mode or the power saving mode if the primary batery 102 is removed (e.g., if the connection status indicates that the primary batery 102 is removed) and/or if the batery level, state of charge, remaining capacity, etc., of the primary batery 102 is below a threshold value.
  • the mode selection manager 312 can transition the NPWT system 100 into the normal mode of operation in response to the primary batery 102 being inserted or electrically coupled with the NPWT system 100 and the primary batery 102 having a sufficient state of charge, batery level, remaining capacity, etc. For example, if the primary batery 102 has a remaining capacity that is greater than the threshold value, the mode selection manager 312 can determine that the NPWT system 100 should be transitioned into the normal mode.
  • mode selection manager 312 any number of modes may be used by the mode selection manager 312, with various conditions, user inputs, batery conditions, etc., resulting in the mode selection manager 312 selecting between the various modes.
  • the mode selection manager 312 can also determine a negative pressure setpoint corresponding to the selected mode and may provide the negative pressure setpoint to the negative pressure manager 310.
  • the negative pressure manager 310 can use the negative pressure setpoint to generate control signals for the pump 118 to achieve the negative pressure setpoint at the wound site 116. Specifically, the negative pressure manager 310 may operate the pump 118 to drawdown until the negative pressure setpoint is reached at the wound site 116.
  • the negative pressure manager 310 receives feedback from a pressure sensor at the wound site 116 and uses the feedback to determine when the negative pressure at the wound site 116 is at the negative pressure setpoint.
  • the mode selection manager 312 may reduce the negative pressure setpoint when selecting the low power or the power saving mode.
  • the mode selection manager 312 may also reduce additional functionality of the NPWT system 100 to save or reduce power consumption (e.g., restrict wireless communications, reduce miscellaneous or external functions such as lighting, reduce a brightness of a user interface, etc.).
  • the battery manager 308 can generate display signals for the display devices 316.
  • the battery manager 308 can operate the display devices 316 (e.g., light emitting diodes, light emitting devices, speakers, etc.) to alert or alarm the user or patient of the NPWT system 100 when the primary battery 102 is removed or should be recharged.
  • the battery manager 308 can also operate the display devices 316 to indicate to the user that the secondary battery 104 is charging, to indicate the connection status of the primary battery 102, etc.
  • the battery manager 308 also operates the display devices 316 to indicate the state of charge or the battery level (e.g., output voltage, remaining electrical energy in mAh) of the primary battery 102 and/or the secondary battery 104.
  • the controller 106 is shown to include a wireless transceiver, a cellular dongle, a near field communications (NFC) device, etc., shown as wireless transceiver 316, according to some embodiments.
  • the wireless transceiver 316 is configured to facilitate bidirectional wireless communications between the controller 106 and a personal computer device, a smart phone, a mobile device, an external device, etc., shown as personal computer device 318.
  • the controller 106 may be configured to communicate wirelessly with the personal computer device 318 by receiving a serial number, a password, a request, an ID, etc. of a therapy unit from the personal computer device 318.
  • the controller 106 may be configured to receive commands from the personal computer device 318 (e.g., to change the mode, to change the negative pressure setpoint, etc.) to change the operation of the NPWT system 100. Likewise, the controller 106 can transmit or send information collected from the NPWT system 100 to the personal computer device 318 (e.g., sensed negative pressure, a target or setpoint negative pressure value, state of charge or battery level of the primary batter 102 and/or the secondary battery 104, etc.).
  • the personal computer device 318 may be a smartphone or a tablet, and can include a touch screen configured to receive user inputs. The user inputs may be commands to change the operation of the NPWT system 100 (e.g., to charge the secondary battery 104 using the primary battery 102), or requests to view information.
  • GUIs 500-700 that can be displayed on the personal computer device 318 or on the display devices 316 of the NPWT system 100.
  • the NPWT system 100 includes a touch screen, a user interface, etc., that is configured to display the GUIs 500-700 and/or to receive user inputs.
  • the GUI 500 can include a status alert 524, an alert message 502, a measured negative pressure indication 504, a wireless communications indication 506, a temperature indication 508, a relative humidity indication 510, a battery level indication 512, and a speed of user indication 514.
  • the status alert 524 can include various icons that change color to visually indicate a status of the NPWT system 100.
  • the status alerts 524 can include a wireless communications icon, a battery alert icon, a dressing leak icon, a dressing full icon, etc.
  • the status alerts 524 correspond to the alert message 502.
  • the alert message 502 may be a textual message “DRESSING LEAK. CHECK DRESSING.” and the dressing leak icon of the status alerts 524 may be activated, changed in color, etc., or otherwise manipulated to prompt the user or the patient to check the dressing.
  • the alert message 502 may be a textual message “DRESSING FULL. CHANGE DRESSING.” and the dressing full icon of the status alerts 524 can be activated, changed in color, etc., or otherwise manipulated to prompt the user or the patient to change the dressing.
  • the NPWT system 100 detects that one of the batteries 102-104 (e.g., the primary battery 102 and/or the secondary battery 104) is low (e.g., the battery level, state of charge, battery capacity, etc., is below a threshold value such as 10% remaining charge)
  • the alert message 502 can be a textual message “LOW BATTERY. CONNECT CHARGER.” or “LOW BATTERY. REMOVE AND RECHARGE BATTER.” and the battery alert icon may be activated to prompt the user to charge the battery (e.g., to remove and recharge the primary battery 102).
  • the GUI 600 may be displayed to the user.
  • the GUI 600 can be the same as or similar to the GUI 500 and may include activating the wireless communications icon to prompt the user or the patient to enter the serial number or ID of the device which the user desires to control or monitor.
  • the GUI 600 may include a prompt 602 to enter the serial number or the ID of the NPWT system 100 (e.g., a serial number of a therapy unit, the controller 106, etc.) and a keypad 604 which can receive a user input.
  • the user may then input the serial number or the ID of the NPWT system 100, and the personal computer device 318 may transmit (e.g., wirelessly) the serial number or the ID entered by the user to the controller 106.
  • the controller 106 may check the serial number or the ID, and if the serial number/ID matches a corresponding serial number/ID associated with the controller 106, the controller 106 may establish wireless communications between the personal computer device 318 and the controller 106 (e.g., through the wireless transceiver 316), thereby allowing the personal computer device 318 to monitor information of the NPWT system 100, and to send commands to change the operation of the NPWT system 100 or requests to view additional information of the NPWT system 100
  • the measured negative pressure indication 504 can be a textual value indicating a current or measured negative pressure of the NPWT system 100 at the wound site 116 (e.g., 50 mmHg).
  • the wireless communications indication 506 may indicate whether the device that the GUI 500 is displayed on (e.g., the personal computer device 318) is configured to wirelessly communicate with the controller 106 of the NPWT system 100.
  • the temperature indication 508 can include a graphical and/or textual indication of a temperature of the NPWT system 100 (e.g., a temperature at the wound site 116, a temperature of the controller 106, etc.) that may be measured by the NPWT system 100 using a temperature sensor and obtained by the controller 106.
  • the relative humidity indication 510 can be or include a textual and/or a graphical indication of a relative humidity of the NPWT system 100 (e.g., a relative humidity of atmosphere surrounding the NPWT system 100, a relative humidity at the wound site 116, etc.). The relative humidity of the NPWT system 100 may be measured by a relative humidity sensor and obtained by the controller 106.
  • the battery level indication 512 can include a textual and/or graphical indication of a current state of charge, battery level, capacity, remaining electrical energy, etc., of the primary battery 102 and/or the secondary battery 104.
  • the battery level or state of charge can be received by the controller 106 directly from the batteries 102-104, or from the circuitry 120.
  • the speed of user indication 514 may include a graphical and/or a textual indication of a current speed of the user.
  • the current speed of the user can be measured by a GPS of the NPWT system 100 (e.g., a GPS of the controller 106), or any other speed sensor.
  • the GUI 500 can display any other information of the NPWT system 100.
  • the GUI 500 can display (e.g., in response to a user request or a user input) an output voltage of the batteries 102-104, a mode of the NPWT system 100 (e.g., the normal mode or the low power mode, etc.), an output current of the batteries 102-104, a cumulative therapy time, etc.
  • the GUI 500 can include various user inputs 516-522, according to some embodiments.
  • the GUI 500 may include a start/stop user input 516, a target pressure user input 518, a code enter user input 520, a wireless communications input 522, etc.
  • the start/stop user input 516 facilitates allowing the user to selectably start or stop the therapy of the NPWT system 100.
  • the target pressure user input 518 can facilitate allowing the user to either select between various predefined target pressures (e.g., between 75 and 125 mmHg), or to enter a custom target pressure.
  • the target pressure may then be transmitted to the controller 106 so that the controller 106 can use the target pressure to operate the pump 118 to draw the target pressure at the wound site 116.
  • the code enter user input 520 may prompt the user to enter a code so that the user may view additional information, perform administrative tasks on the controller 106, view diagnostic information, change operation of the NPWT system 100, etc., after entering a code.
  • the wireless communications input 522 may facilitate allowing the user to enter the serial number or ID of the NPWT system 100 to establish wireless communications between the device (e.g., the personal computer device 318) on which the GUI 500 is displayed and the controller 106. For example, selecting the wireless communications input 522 may bring up the GUI 600 as shown in FIG. 10.
  • the GUI 700 can display various alert messages 702 to the user.
  • the alert messages 702 can be received by the device on which the GUI 700 is displayed (e.g., the personal computer device 318) and indicate a status change, a battery level, a therapy status, a wireless connection status, etc., of the NPWT system 100 or the controller 106.
  • a first alert message 702a may indicate that the wireless communications between the personal computer device 318 and the controller 106 has been lost (e.g., “CONNECTION UOST. PUEASE CHECK DEVICE.”).
  • a second alert message 702b may indicate a battery status, prompt the user to charge the battery, and notify the user regarding a mode change of the NPWT system 100 (e.g., “LOW BATTERY. CONNECT CHARGER. ENTERING POWERS A VE MODE ”).
  • a third alert message 702c may indicate that the dressing of the NPWT system 100 has been detected to be full and prompt the user to change the dressing (e.g., “DRESSING FULL. CHANGE DRESSING.”).
  • a fourth alert message 702d may indicate that a dressing leak has been detected and prompt the user to change the dressing (e.g., “DRESSING LEAK. CHECK DRESSING.”).
  • a fifth alert message 702 e may indicate that wireless communications between the controller 106 and the personal computer device 318 has been restored (e.g, “CONNECTION RESTORED ”).
  • FIG. 2 a flow chart of a process 200 of operating a NPWT system is shown, according to some embodiments.
  • the process 200 is performed by the controller 106 or the various components thereof (shown in FIG. 3, described in greater detail below).
  • the process 200 include steps 202-206, according to some embodiments.
  • the NPWT system can be similar as the NPWT system 100 of FIG. 1.
  • the process 200 includes providing power from a first battery (e.g., a primary battery, the primary battery 102, a larger battery, etc.) at a first voltage level to operate a negative pressure pump on a dressing (step 202), according to some embodiments.
  • the first battery can be connected to a second battery (e.g., a secondary battery, the secondary battery 104, a smaller battery, etc.) through circuitry.
  • the first battery can be a removable and rechargeable battery pack that can be easily removed from the NPWT system for recharging in any suitable charging mechanism.
  • the first battery can be contained or enclosed within a fire-resistant housing. When the first battery is used, the NPWT system may operate in a full-power mode which allows the negative pressure pump to provide a negative pressure from 100 mmHg to 150 mmHg.
  • the process 200 includes providing power from the second battery to operate the negative pressure pump on the dressing when the first battery is removed, exhausted, or in a predetermined time period (e.g., at night, a sleeping time period, etc.) (step 204), according to some embodiments.
  • the second battery can have a lower capacity than the first battery.
  • the second battery may be integrated into the NPWT system. When the second battery is used, the NPWT system may operate in a low-power mode that allows the negative pressure pump to provide a negative pressure from 50 mmHg to 100 mmHg.
  • the second battery is configured or sized to provide power for the NPWT system over a time duration or a time interval required to charge the first battery.
  • the second battery can have a capacity such that the second battery can power the NPWT system over the entire time duration required to charge the first battery from an energy level of substantially zero (e.g., a fully depleted state) to a maximum energy level (e.g., a fully charged state).
  • an energy level of substantially zero e.g., a fully depleted state
  • a maximum energy level e.g., a fully charged state
  • the process 200 includes charging the second battery by the first battery when the second battery is below a threshold voltage level (step 206), according to some embodiments.
  • the first battery may charge the second battery if the second battery is below a threshold level.
  • the first battery can output a second voltage level to the second battery to charge the second battery.
  • the first battery charges the second battery and operates the NPWT system in a normal-power mode at the same time (e.g., concurrently, simultaneously, etc.).
  • FIG. 12 a process 800 of a “top level” or overall operation of the NPWT system 100 is shown, according to some embodiments.
  • the process 800 can be performed by the user as well as the controller 106 and a caregiver.
  • the process 800 may include steps 802-812.
  • the process 800 includes applying a dressing (step 802), according to some embodiments.
  • the dressing can be applied at the wound site 116 by a caregiver.
  • the step 802 can include applying the dressing such that the dressing is substantially sealed at the wound site 116, making an incision or cutting a hole in the dressing, and fluidly coupling (e.g., with a tubular member) an inner volume at the wound site defined by the dressing 116 with the pump 118.
  • the process 800 includes connecting a therapy device (step 804), according to some embodiments.
  • the step 804 can include fluidly coupling the dressing with the pump 118 or otherwise configuring the therapy device (e.g., the controller 106, the pump 118, etc.) for NPWT.
  • the steps 802-804 may be performed by the patient, a clinician, or a caregiver.
  • the process 800 includes starting the device or turning the device on (step 806), according to some embodiments.
  • the step 806 can include connecting a battery (e.g., the primary battery 102) to the controller 106, or more generally, the NPWT system 100, and providing a user input to the controller 106 to start the device.
  • the controller 106 can start the device in response to receiving the user input.
  • the step 806 can be performed by the user, the clinician, the caregiver, etc., and/or the controller 106.
  • the process 800 includes applying negative pressure wound therapy (step 808), according to some embodiments.
  • the step 808 may be performed by the controller 106 and the pump 118. More generally, step 808 may be performed by the NPWT system 100.
  • the step 808 can include drawing a negative pressure at the wound site 116 to treat the wound and facilitate healing progression of the wound. Step 808 is described in greater detail below with reference to FIGS. 13-15.
  • the process 800 includes turning the device off or shutting down the device (step 810), according to some embodiments.
  • the step 810 can be performed after the therapy is completed (e.g., in response to completing step 808).
  • Step 810 can also be performed in response to receiving a user input to shut down the device.
  • the process 800 includes removing the dressing and the device (step 812), according to some embodiments.
  • the step 812 can be performed intermittently throughout a therapy duration, or upon completion of the therapy.
  • the step 812 can be performed by the patient, a clinician, a caregiver, a nurse, etc.
  • the step 812 can include fluidly de-coupling the pump 118 from the wound site 116 and removing the dressing from the wound site 116.
  • a table 400 shows various battery parameters for the primary battery 102 and/or the secondary battery 104, according to some embodiments.
  • the table 400 can be used to select a properly sized and rated battery for the NPWT system 100.
  • the table 400 includes columns 402-414.
  • the column 402 represents a leak rate of the NPWT system 100 (e.g., at the wound site 116).
  • the column 404 represents hysteresis of the negative pressure drawn at the wound site 116 by the NPWT system 100.
  • the column 406 represents an average battery life (in hours, plus or minus some variance) given the corresponding parameters of the NPWT system 100 (e.g., the columns 402-404).
  • the column 408 represents an average required capacity of the battery (e.g., the primary battery 102 and/or the secondary battery 104) for 8 hours of operation in units of mAh.
  • the column 410 represents an average required capacity of the battery (e.g., the primary battery 102 and/or the secondary battery 104) for 18 hours of operation in units of mAh.
  • the column 412 represents an average output current of the battery in units of milliamps (mA).
  • the column 414 represents a peak output current of the battery in units of mA.
  • the table 400 is divided into a first section 416 that represents the various parameters of columns 402-414 for the low power mode (e.g., operating the pump 118 to achieve a negative pressure of 75 mmHg) and a second section 418 that represents the various parameters of columns 402-414 for the normal or standard mode (e.g., operating the pump 118 to achieve a negative pressure of 125 mmHg).
  • the batteries may be selected based on a combination of any of the leak (i.e., the values of the column 402), the hysteresis (i.e., the values of the column 404), etc., or any of the other columns 402-414.
  • the second section 418 of the table 400 may be used to select an appropriate battery that achieves a desired operational time (e.g., an amount of time that the primary battery 102 can provide sufficient power to the NPWT system 100).
  • the first section 416 of the table 400 can be used to select the secondary battery 104 (e.g., since the secondary battery 104 can be used to operate the NPWT system 100 in the low power or power saving mode).
  • Coupled means the joining of two members directly or indirectly to one another. Such joining may be stationary (e.g., permanent, etc.) or moveable (e.g., removable, releasable, etc.). Such joining may be achieved with the two members or the two members and any additional intermediate members being integrally formed as a single unitary body with one another or with the two members or the two members and any additional intermediate members being attached to one another.
  • references herein to the positions of elements are merely used to describe the orientation of various elements in the figures. It should be noted that the orientation of various elements may differ according to other exemplary embodiments, and that such variations are intended to be encompassed by the present disclosure.

Abstract

Des systèmes et des procédés fournissent de l'énergie à un système de traitement des plaies par pression négative (NPWT) portable. Le système d'alimentation comprend une première batterie et une seconde batterie. La première batterie peut être retirée du système NPWT. La seconde batterie est rechargeable par la première batterie.
PCT/IB2020/058961 2019-09-26 2020-09-24 Systèmes et procédés d'alimentation électrique pour un système de thérapie WO2021059205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962906272P 2019-09-26 2019-09-26
US62/906,272 2019-09-26

Publications (1)

Publication Number Publication Date
WO2021059205A1 true WO2021059205A1 (fr) 2021-04-01

Family

ID=72801762

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/058961 WO2021059205A1 (fr) 2019-09-26 2020-09-24 Systèmes et procédés d'alimentation électrique pour un système de thérapie

Country Status (1)

Country Link
WO (1) WO2021059205A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024047420A1 (fr) * 2022-08-30 2024-03-07 Solventum Intellectual Properties Company Dispositifs de détection de pression négative et de pression de plaie encapsulés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150249365A1 (en) * 2012-10-19 2015-09-03 Sun Medical Technology Research Corporation Power-supply switching circuit and artificial heart system
US10046096B2 (en) * 2012-03-12 2018-08-14 Smith & Nephew Plc Reduced pressure apparatus and methods
WO2020011690A1 (fr) * 2018-07-13 2020-01-16 T.J.Smith And Nephew,Limited Dispositif de traitement de plaie par pression négative ayant des systèmes primaires et auxiliaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10046096B2 (en) * 2012-03-12 2018-08-14 Smith & Nephew Plc Reduced pressure apparatus and methods
US20150249365A1 (en) * 2012-10-19 2015-09-03 Sun Medical Technology Research Corporation Power-supply switching circuit and artificial heart system
WO2020011690A1 (fr) * 2018-07-13 2020-01-16 T.J.Smith And Nephew,Limited Dispositif de traitement de plaie par pression négative ayant des systèmes primaires et auxiliaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024047420A1 (fr) * 2022-08-30 2024-03-07 Solventum Intellectual Properties Company Dispositifs de détection de pression négative et de pression de plaie encapsulés

Similar Documents

Publication Publication Date Title
US10376625B2 (en) Power scaling
AU2016225903B2 (en) Low-power battery pack with safety system
AU2013371427B2 (en) Controller and power source for implantable blood pump
EP1981585B1 (fr) Systeme d'assistance cardiaque
JP5898098B2 (ja) 機械的循環補助システムのための一体型電源を持つ携帯用コントローラ
EP3377136A1 (fr) Gestion de l'énergie de dispositifs de commande de pompe à sang
WO2021059205A1 (fr) Systèmes et procédés d'alimentation électrique pour un système de thérapie
WO2024059782A2 (fr) Systèmes de défibrillateur externe automatisé à mode de veille profonde

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20788883

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20788883

Country of ref document: EP

Kind code of ref document: A1