# US 2019/0167863 A1 · Reduced pressure therapy apparatuses and methods of using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167863 A1 - Document ID: US20190167863A1 - Status: Published application - Kind: A1 - Application number: 16/200,976 - Filed: 2018-11-27 - Published: 2019-06-06 - Earliest claimed: 2011-11-02 - Assignees: Smith & Nephew, Inc. - Applicants: Smith & Nephew PLC - Inventors: Gordon Campbell Adie; Julie Allen; Victoria Beadle; Sarah Jenny Collinson; Christopher John Fryer; Edward Yerbury Hartwell; Elizabeth Anne Fyfe Jennings; Derek Nicolini; Yannick Louis Peron - Web page: https://patentgrep.com/patent/US20190167863A1 ## CPC - A61M 1/962: {having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction} - A61M 1/732: {Visual indicating means for vacuum pressure} - A61M 1/74: {Suction control (underwater drainage A61M1/61)} - A61M 1/78: {Means for preventing overflow or contamination of the pumping systems (combined with drainage containers A61M1/60)} - A61M 1/80: {Suction pumps (A61M1/64, A61M1/71, A61M60/00 take precedence)} - A61M 1/90: {Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing} - A61M 1/912: {Connectors between dressing and drainage tube} - A61M 1/966: {having a pressure sensor on or near the dressing} - A61M 2205/15: Detection of leaks - A61M 2205/18: with alarm - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3344: Measuring or controlling pressure at the body treatment site - A61M 2205/42: Reducing noise - A61M 2205/8212: with means or measures taken for minimising energy consumption - A61M 2209/06: Packaging for specific medical equipment - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Some embodiments comprise a pump assembly for reduced pressure wound therapy, comprising a housing, a flow pathway through the pump, one or more valves in communication with the flow pathway, a pump supported within or by the housing, and a one-way flow valve in fluid communication with the pump. The pump assembly can have a pressure sensor in communication with the flow pathway through the pump, and at least one switch or button supported by the housing, the at least one switch or button being accessible to a user and being in communication with the controller. The one-way flow valve can be configured to substantially prevent a flow of gas through the one-way flow valve in a direction of flow away from the pump. The pump assembly can have a controller supported within or by the housing, the controller being configured to control an operation of the pump. The pump has been sterilized following the assembly of the pump such that an inside and an outside of the housing, the flow pathway, the one or more valves, the pump, the controller, the battery compartment, and the at least one switch or button have been sterilized. ## Claims ### Claim 1 (canceled) ### Claim 2 A negative pressure wound therapy device comprising: a housing; a pressure source positioned at least partially within the housing and configured to be in fluid communication, via a fluid flow path, with a wound covered by a wound dressing; a user input interface positioned at least partially on an exterior surface of the housing, the user input interface configured to receive one or more inputs from a user; and a controller supported by the housing and configured to receive one or more indications from the user input interface associated with the one or more user inputs, the controller further configured to: transition from an inactive state to an active state in response to receiving a first indication from the user input interface; monitor a duration of time of operating in the active state; when in the active state, activate the pressure source to cause provision of negative pressure to the wound via the flow path in response to receiving a second indication from the user input interface; and in response to the duration of time of operating in the active state reaching a lifetime threshold, transition to an end of life state in which generation of negative pressure by the pressure source is disabled. ### Claim 3 (depends on 2) The device of claim 2, wherein, when in the end of life state, activation of the pressure source remains disabled when disconnecting a power source from the controller and subsequently reconnecting the power source to the controller. ### Claim 4 (depends on 2) The device of claim 2, wherein the lifetime threshold is a preset value. ### Claim 5 (depends on 2) The device of claim 2, wherein the controller is further configured to, in response to receiving a third indication from the user input interface, deactivate the pressure source, and wherein the third indication is received subsequent to the second indication. ### Claim 6 (depends on 5) The device of claim 5, wherein the controller is further configured to continue monitoring the duration of time of operating in the active state when the pressure source is deactivated. ### Claim 7 (depends on 5) The device of claim 5, wherein the controller is further configured to, in response to receiving a fourth indication from the user input interface, activate the pressure source, and wherein the fourth indication is received subsequent to the third indication. ### Claim 8 (depends on 2) The device of claim 2, wherein the controller is further configured to, in the active state, maintain negative pressure in a negative pressure range by repeatedly deactivating and activating the pressure source. ### Claim 9 (depends on 2) The device of claim 2 further comprising a plurality of indicators positioned at least partially on the exterior surface of the housing, wherein the controller is further configured to, with the plurality of indicators, indicate at least one of (i) activation of the pressure source, (ii) a leak condition, (iii) a remaining capacity of a power source, (iv) the end of life state, or (v) deactivation of the pressure source. ### Claim 10 (depends on 9) The device of claim 9, wherein the controller is further configured to deactivate the plurality of indicators when in the end of life state. ### Claim 11 (depends on 9) The device of claim 9, wherein the plurality of indicators comprises: a first indicator configured to indicate that the pressure source has been activated; a second indicator configured to indicate the leak condition; and a third indicator configured to indicate the remaining capacity of the power source. ### Claim 12 (depends on 2) The device of claim 2, wherein the user input interface comprises one or more of a button, touchpad, touch screen, keyboard, or a battery compartment. ### Claim 13 (depends on 12) The device of claim 12, wherein the user input interface consists of a single button. ### Claim 14 (depends on 2) A negative pressure wound therapy apparatus comprising the device of claim 2 and the wound dressing. ### Claim 15 (depends on 14) The negative pressure wound therapy apparatus of claim 14, wherein the controller, the pressure source, and the wound dressing are configured to operate together to provide negative pressure wound therapy without use of a fluid collection canister. ### Claim 16 A negative pressure wound therapy device comprising: a housing; a pressure source positioned at least partially within the housing and configured to be in fluid communication with a wound covered by a wound dressing; a user input interface positioned at least partially on an exterior surface of the housing, the user input interface configured to receive one or more inputs from a user; and a controller supported by the housing and configured to receive one or more indications from the user input interface, the one or more indications associated with the one or more user inputs, the controller further configured to: in response to receiving at least one indication from the user input interface to provide negative pressure wound therapy: monitor a duration of time associated with providing negative pressure wound therapy; and activate the pressure source to cause provision of negative pressure to the wound via a fluid flow path fluidically connecting the pressure source to the wound; and in response to the duration of time associated with providing negative pressure wound therapy reaching a lifetime threshold, disable generation of negative pressure by the pressure source. ### Claim 17 (depends on 16) The device of claim 16, wherein the duration of time associated with providing negative pressure wound therapy comprises times during which the pressure source is ON and OFF. ### Claim 18 (depends on 16) The device of claim 16, wherein the at least one indication comprises first and second indications, and wherein the controller is further configured to: in response to receiving the first indication, monitor the duration of time associated with providing negative pressure wound therapy; and in response to receiving the second indication, activate the pressure source to cause provision of negative pressure to the wound via the fluid flow path. ### Claim 19 (depends on 18) The device of claim 18, wherein the second indication is associated with the user pressing a button. ### Claim 20 (depends on 16) The device of claim 16, wherein the user input interface comprises one or more of a button, touchpad, touch screen, keyboard, or a battery compartment. ### Claim 21 (depends on 20) The device of claim 20, wherein the user input interface consists of a single button. ### Claim 22 (depends on 20) The device of claim 20, wherein the user input interface comprises a button, and wherein the one or more user inputs further comprise one or more button presses. ### Claim 23 (depends on 16) The device of claim 16, wherein the controller is further configured to, in response to receiving a second indication of the at least one indication from the user input interface, deactivate the pressure source, and wherein the second indication is received subsequent to the at least one indication. ### Claim 24 (depends on 16) The device of claim 16, wherein, once the duration of time associated with providing negative pressure wound therapy reaches the lifetime threshold, generation of negative pressure remains disabled when disconnecting a power source from the controller and subsequently reconnecting the power source to the controller. ### Claim 25 (depends on 16) The device of claim 16 further comprising a plurality of indicators positioned at least partially on the exterior surface of the housing, wherein the controller is further configured to deactivate the plurality of indicators in response to the duration of time associated with providing negative pressure wound therapy reaching the lifetime threshold. ### Claim 26 A negative pressure wound therapy device comprising: a housing; a pressure source positioned within the housing and configured to be in fluid communication, via a fluid flow path, with a wound covered by a wound dressing; a user input interface positioned on an exterior surface of the housing, the user input interface consisting of a single button configured to be pressed by a user; a controller supported by the housing and configured to receive an input from the user when the button is pressed, the controller further configured to: activate the pressure source upon a first pressing of the button; deactivate the pressure source upon a second pressing of the button subsequent to the first pressing of the button; and re-activate the pressure source upon a third pressing of the button subsequent to the second pressing of the button; and at least three indicators positioned at least partially on the exterior surface of the housing, the at least three indicators comprising: a first indicator configured to indicate that the pressure source has been activated; a second indicator configured to indicate a leak condition; and a third indicator configured to indicate a remaining capacity of a power source. ### Claim 27 (depends on 26) A negative pressure wound therapy apparatus comprising the negative pressure wound therapy device of claim 26 and a wound dressing configured to be in fluid communication with the pressure source. ### Claim 28 (depends on 26) The device of claim 26, wherein the controller is further configured to monitor a duration of time during which the pressure source is activated. ### Claim 29 (depends on 26) The device of claim 26, wherein the controller is further configured to monitor a duration of time during which the pressure source is deactivated. ### Claim 30 (depends on 26) The device of claim 26, wherein the at least three indicators are configured to indicate at least one of an end of life state in which generation of negative pressure by the pressure source is disabled or that the pressure source has been deactivated. ### Claim 31 (depends on 30) The device of claim 30, wherein the at least three indicators are deactivated when in the end of life state.