Wound oxygen treatment system

Abstract

To provide a system for optimizing oxygen concentration adjacent a wound.SOLUTION: A wound treatment system is provided, including: a processor coupled to sensor systems; a power delivery system; an oxygen concentrator coupled to the power delivery system and including an oxygen outlet coupled to a restricted airflow enclosure provided by a dressing and located adjacent a wound site; and a negative pressure system that includes a negative pressure outlet coupled to the restricted airflow enclosure. The processor receives first sensor information from the sensor systems, and uses the first sensor information to control the power provided from the power delivery system to the oxygen concentrator in order to control an oxygen flow created by the oxygen concentrator and provided through the oxygen outlet to the restricted airflow enclosure. When the processor receives second sensor information from the sensor systems, the processor activates the negative pressure system to create a fluid flow from the restricted airflow enclosure and through the negative pressure outlet.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] Related Applications This disclosure claims the benefit and priority of U.S. Provisional Patent Application No. 62 / 833,878, filed Apr. 15, 2019, entitled “Wound Oxygen Treatment System,” which is hereby incorporated by reference in its entirety.

Background Art

[0002] This disclosure generally relates to wound healing through the supply of oxygen to a wound to accelerate the healing of damaged tissue and / or promote the viability of the tissue. More particularly, it relates to optimizing the oxygen concentration adjacent to a wound while removing exudate and other fluids from adjacent to the wound site using intermittent vacuum / suction of a wound site enclosure adjacent to the wound site.

[0003] When tissue is damaged and a wound occurs, a four-stage healing process begins, and optimal metabolic function of cells in the tissue to regrow the wound requires oxygen to be available at all of these stages of wound healing. Further, the greater the depth of damaged tissue, the greater the risk of complications occurring during the wound healing process, and difficult-to-heal wounds encounter barriers to the wound healing process and may experience delays in one or more of the last three stages of wound healing. For example, one of the most common contributing factors to delays in the healing of wounds such as venous leg ulcers, diabetic foot ulcers, and pressure ulcers is the problem of chronic wound ischemia. Chronic wound ischemia is a pathological condition that restricts blood supply, oxygen supply, and the blood requirements for adequate oxygenation of the tissue, which inhibits normal wound healing.

[0004] One conventional standard care for treating difficult-to-heal wounds involves the use of advanced wound dressings, or combinations of advanced wound dressings, that provide a dressing treatment system. Advanced wound dressings may be placed over the wound site and, in some cases, the surrounding intact skin to provide a wound site enclosure. Advanced wound dressings typically include materials having properties that promote moist wound healing, manage wound exudate, and assist in controlling the wound bioburden. The materials provided in combination act to produce a limited water vapor permeability, such that the more occlusive the dressing, the less ambient air is available to the wound site (and thus the less oxygen is available).

[0005] 100% oxygen exerts a partial pressure of 760 millimeters (mm) of mercury (Hg), and ambient air contains approximately 21% oxygen and thus exerts a partial pressure of oxygen of approximately 159 mmHg. Typical advanced wound dressings or wound dressing systems that utilize materials providing limited water vapor permeability act to affect the oxygen available to the wound site, thereby restricting the partial pressure of oxygen in the enclosed wound site to about 10 - 60 mmHg. Fresh air (and its associated higher oxygen content) is then provided to the wound site only when the dressing is changed, and the dressing may cover the wound site for up to 7 days before a dressing change is required. Thus, the limited water vapor permeability of advanced wound dressings creates a reduced-oxygen wound environment that acts against the optimal metabolic function of cells for wound re-growth during all stages of wound healing.

[0006] Specific examples of conventional systems and methods for providing tissue oxygenation to difficult-to-heal wounds include the intermittent or continuous application of topical hyperbaric oxygen to the wound site. Intermittent topical hyperbaric oxygen treatment systems provide a sealed limb or partial body chamber with a source of pure oxygen connected at a relatively high flow rate, and a wound on a limb within the sealed limb chamber or partial body chamber It includes placing a limb or body region. Then, the oxygen source supplies oxygen up to 100% to the chamber at a flow rate that may exceed 300 liters per hour, pressurizes the interior of the chamber up to 1.05% of standard atmospheric pressure, thereby locally increasing the oxygen available for cell treatment at the injured wound site. For example, during oxygen application, the partial pressure of oxygen applied inside a sealed limb or partial body chamber may reach 798 mmHg and may be applied for about 90 minutes. These and similar methods of applying intermittent local high-pressure oxygen are limited, difficult to handle, can only supply oxygen intermittently to the affected area without systemic application, and provide only a minimal increase in atmospheric pressure (about 5%). Therefore, the effect of oxygen therapy on wounds using these methods tends to be minimal, as evidenced by the lack of commercial success of local high-pressure oxygen limb chambers.

[0007] Other conventional systems and methods for providing tissue oxygenation include disposable devices that provide the transfer of gaseous ions through ion-specific membranes to directly apply supplemental oxygen to the wound site. This device is typically a battery-powered disposable oxygen replenishing dressing provided directly above the wound site and utilizes electrochemical oxygen generation using a four-electron variation originally developed for NASA. In such systems, the amount of oxygen that can be applied to the wound is typically in the range of 3 to 15 milliliters per hour, and the desired oxygen flow rate is generated by utilizing a corresponding pre-selected battery size having a pre-specified number of amperes. Therefore, these devices are either "on or off" and do not have the ability to supply a variable or adjustable oxygen flow or oxygen flow rate without obtaining a new device and / or a different battery having the number of amperes to generate the desired flow rate. The use of a fixed, non-variable oxygen flow and oxygen flow rate introduces corresponding limitations in the treatment of different sizes and types of wounds, tending to result in the system being either excessive or insufficient for the wounds to which the wound treatment system is applied.

[0008] The inventors of the present disclosure have invented both a system and a method for addressing the problems of the above-described conventional wound treatment systems. For example, Patent Document 1, Patent Document 2, and Patent Document 3 (the disclosures of which are hereby incorporated by reference in their entirety) describe a wound treatment system that provides low-flow tissue oxygenation and continuous oxygen regulation capabilities to a wound site, generating a controlled high-oxygen and low-oxygen wound environment for damaged tissue, accelerating wound healing, and promoting tissue viability. These systems and methods operate by monitoring pressure information indicating the pressure within a restricted airflow enclosure (e.g., provided by a wound dressing material) disposed adjacent to the wound site, monitoring humidity information indicating the ambient humidity, and / or using other characteristics to control the power supplied to an oxygen generation subsystem to control the oxygen flow generated by the oxygen generation subsystem and provided to the restricted airflow enclosure. In some embodiments, these wound treatment systems include a flow sensor that measures the oxygen output of the oxygen generation subsystem (a pressure sensor downstream of the flow sensor that may be used to measure the pressure for controlling the oxygen flow generated by the oxygen generation subsystem as described above), a humidity sensor that measures the ambient humidity that may be used to control the oxygen flow generated by the oxygen generation subsystem as described above, and / or other sensor subsystems for use in controlling the oxygen flow generated by the oxygen generation subsystem as described above.

[0009] However, the inventors of the present disclosure have discovered that achieving an oxygen concentration that provides improved or optimal wound healing can take a relatively long time because the wound site enclosure generated when the wound dressing material is applied to the wound often contains a relatively large volume of relatively low-oxygen-concentration air (a volume that increases as the size of the wound dressing material increases) that must be replaced by the high-concentration oxygen generated by the above-described oxygen generation subsystem. Further, with the replacement of the wound dressing material, the relatively high-concentration oxygen provided within the wound site enclosure by the above-described oxygen generation subsystem is released, and thus each wound dressing material replacement 、Introduce the above-mentioned problem of "resetting the clock" of the accumulation of relatively high concentrations of oxygen within and adjacent to the wound site to provide the above advantages. Additionally, exudates and / or other fluids generated by and / or adjacent to the wound site can cause problems with the above-mentioned wound oxygen therapy system, including introducing blockages to the oxygen supply tube / line that prevent the provision of relatively high concentrations of oxygen within and adjacent to the wound site.

[0010] Therefore, it would be desirable to provide an improved wound treatment system.

Prior Art Documents

Patent Documents

[0011]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

[0012] According to one embodiment, a wound treatment system includes a housing, a processor disposed within the housing, at least one sensor system coupled to the processor, a power supply system disposed within the housing and coupled to the processor, and an oxygen concentrator disposed within the housing and coupled to the power supply system. The oxygen concentrator includes an oxygen outlet coupled to a restricted airflow enclosure provided by a dressing material and disposed adjacent to the wound site, and a negative pressure system coupled to the processor. The negative pressure system includes a negative pressure outlet coupled to a restricted airflow enclosure provided by a dressing material and disposed adjacent to the wound site. The processor receives first sensor information from the at least one sensor system; controls the power provided from the power supply system to the oxygen concentrator using the first sensor information to control the oxygen flow generated by the oxygen concentrator and provided to the restricted airflow enclosure through the oxygen outlet; receives second sensor information from the at least one sensor system; and is configured to operate the negative pressure system to generate a fluid flow from the restricted airflow enclosure through the negative pressure outlet.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

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Figure 4b

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DETAILED DESCRIPTION OF THE INVENTION

[0014] Some embodiments of the present disclosure are based on the teachings provided in incorporated references by at least some of the inventors of the present disclosure, and the entire disclosure of the reference is incorporated herein by reference. U.S. Patent No. 8,287,506 discloses a non-invasive tissue oxygenation system for accelerating the healing of damaged tissue and promoting tissue viability, the system comprising a lightweight portable electrochemical oxygen concentrator, a power management system, a microprocessor, a memory, a pressure sensing system, a temperature monitoring system, an oxygen flow monitoring and control system, a display screen, and keypad navigation control, for providing a continuously variable controlled low dose of oxygen to the wound site and monitoring the healing process.

[0015]

[0016] U.S. Patent No. 10,226,610 discloses a wound treatment system including a housing, a processor disposed within the housing, a pressure monitoring system coupled to the processor for monitoring the pressure within a restricted airflow enclosure adjacent to the wound site, a power supply system disposed within the housing and coupled to the processor, an oxygen concentrator disposed within the housing and coupled to the power supply system, and a plurality of oxygen outlets within the oxygen concentrator coupled to the restricted airflow enclosure, the processor receiving and using pressure information from the pressure monitoring system to control the power provided from the power supply system to the oxygen concentrator, thereby controlling the oxygen flow provided to the restricted airflow enclosure through the oxygen concentrator outlet.

[0017] ​U.S. Patent Application Publication No. 2019 / 0001107 discloses a wound oxygen supply system including a chassis defining an oxygen outlet, an oxygen generation subsystem within the chassis coupled to the oxygen outlet, and a control subsystem coupled to the oxygen generation subsystem. The control subsystem receives and uses humidity information from the oxygen generation subsystem to control the power provided to the generation subsystem, thereby controlling the oxygen flow provided to a restricted airflow enclosure adjacent to the wound site through the oxygen outlet.

[0018] The aforementioned wound oxygen treatment system may be configured to intermittently remove excess fluid (e.g., wound exudate) from a wound dressing provided adjacent to the wound using, for example, a negative pressure system, a vacuum system, and / or a suction management system (SMS) in accordance with the teachings of the present disclosure. Such intermittent removal of exudate and / or other fluids from the wound dressing controls the wound exudate levels within and adjacent to the wound site to protect the tissue from maceration, extend the life of the wound dressing (e.g., by increasing the time between wound dressing changes), and act to remove air from the restricted airflow enclosure provided between the wound dressing and the wound site, resulting in a higher oxygen concentration being achieved in a shorter time frame (e.g., by removing nitrogen within the restricted airflow enclosure and reducing the volume of air within the restricted airflow enclosure provided between the wound dressing and the wound site) compared to conventional systems. Excess wound exudate may be generated during the initial stages of continuous diffusion of oxygen (CDO) treatment, and the level of wound exudate varies over time and with the amount of oxygen supplied. Removal of wound exudate provides better outcomes and user satisfaction and also provides a reduction in clinical management interventions (e.g., a reduction in the overall cost to the healthcare system).

[0019] The negative pressure, vacuum, and / or suction provided via the present disclosure may be achieved via mechanical, electromechanical, and / or other techniques that will be apparent to those skilled in the art who own the present disclosure. In some examples, the negative pressure, vacuum, and / or suction line may be separate from the oxygen supply line. In some examples, the negative pressure, vacuum, and / or suction system may be incorporated into and attached to the oxygen generation device, or may be provided by a separate device. Further, the negative pressure, vacuum, and / or suction system may include a container for collecting wound exudate and / or other fluids.

[0020] In some embodiments, sensors within the oxygen generator and / or wound dressing may be configured to indicate saturation and / or the presence of excessive wound exudate within and / or adjacent to the wound dressing and may trigger the initiation of exudate removal via negative pressure, vacuum, and / or suction. Alternatively, the negative pressure, vacuum, and / or suction system may utilize a timing algorithm based on feedback from the sensor to predict the presence of excessive wound exudate and, in response, initiate negative pressure, vacuum, and / or suction to remove the wound exudate and / or prevent the accumulation of excessive wound exudate levels.

[0021] In some embodiments, the negative pressure, vacuum, and / or suction system may provide removal of wound exudate for multiple wound oxygen therapy systems and / or multiple wound dressings, or may be provided for a single wound oxygen therapy system and a single wound dressing.

[0022] A wound oxygen therapy system may be able to control the oxygen flow provided to a wound site based on the humidity of the air entering an electrolytic cell provided within an oxygen concentrator. The use of air humidity to control the oxygen flow takes advantage of the fact that the flow of oxygen produced by the oxygen concentrator can be affected by the relative humidity of the air, and the electrolytic cell decreases in efficiency as the Nafion proton exchange membrane dries. Above a threshold humidity, the electrolytic cell operates at full efficiency and the oxygen flow is linearly proportional to the applied current, but at humidities below the threshold, the efficiency of the electrolytic cell is impaired and it has a non-linear response to the current input. Thus, at relatively low humidities, more current is required to maintain the desired flow of oxygen. In some embodiments, pressure may be used in combination with humidity to modify the oxygen flow produced by the oxygen concentrator and prevent overpressurization of a restricted airflow enclosure provided by a wound dressing material and disposed adjacent to the wound site. A humidity sensor within the wound oxygen therapy system may be arranged to expose the ambient air before or after (or both before and after) operating humidity control within the device (such as the use of a humidifier pack) to humidify the incoming air.

[0023] A wound oxygen therapy system may include a battery, power control, humidity, and / or pressure sensors, and may use a smartphone or other computing device to monitor, control, and provide power to the wound oxygen therapy system. Thus, a wound oxygen therapy system may include remote wound monitoring sensors, remote communication of data, and / or other high-level functions, but may also be minimized to be a local device that simply provides oxygen and has no other inputs (e.g., connected to the smartphone described above).

[0024] The negative pressure, vacuum, and / or suction system of the present disclosure provides intermittent negative pressure, vacuum, and / or suction to optimize the oxygen concentration within a restricted airflow enclosure provided adjacent to a wound site by a wound dressing, and may also remove excess fluid and / or wound exudate from the adjacent wound site. The negative pressure, vacuum, and / or suction may be attached to the wound dressing using a branched tube that may include a small-diameter oxygen line and a medium-diameter vacuum line.

[0025] In some embodiments, use of the wound oxygen therapy system initially includes applying an oxygen-distributing wound dressing to the wound bed adjacent to the wound site, connecting the wound dressing to a connecting tube that connects to an oxygen concentrator within the wound oxygen therapy system, and activating the wound oxygen therapy system. Activation of the wound oxygen therapy system may cause generation of oxygen at maximum flow rates, along with generation of negative pressure, vacuum, or suction that may be provided by a mechanical or low-power electric vacuum pump. The negative pressure, vacuum, and / or suction may continue within a restricted airflow enclosure provided between the wound dressing and the wound site until a relative pressure (e.g., maximum vacuum) of -200 to -10, preferably -100 to -70 mmHg is reached. When the maximum negative pressure, vacuum, and / or suction is reached, the wound oxygen therapy system may generate oxygen at maximum oxygen flow rates until the relative pressure within the restricted airflow enclosure provided by the wound dressing reaches 0 mmHg. At this point, the oxygen concentrator may continue to generate oxygen at a predetermined flow setpoint (e.g., "steady state" flow) that may be selected by a physician.

[0026] At steady state flow, the wound oxygen therapy system may continue to generate oxygen at the oxygen flow setpoint described above, and the negative pressure, vacuum, and / or suction may be applied when the wound oxygen therapy system detects: - An occlusion alarm indicating occlusion of the oxygen flow of oxygen from the oxygen concentrator to the wound site, which enables activation of the negative pressure, vacuum, and / or suction to remove excess fluid and, in the process, may also relieve the occlusion. - Fluid saturation in a wound dressing material, which may be used to measure the saturation rate and may also be used to communicate the operation of negative pressure, vacuum, and / or suction via micro-wiring extending through a connection tube between the dressing material and a wound oxygen therapy system, may be detected by a low-power surface mount technology (SMT) fluid sensing membrane in the wound dressing material (e.g., in a dressing layer). - Loss of dressing seal, which may be monitored by the wound oxygen therapy system monitoring the pressure within a restricted airflow enclosure provided by the wound dressing material adjacent to the wound site, and may provide initiation of negative pressure, vacuum, and / or suction to reseal the wound dressing material if the minimum seal pressure is not maintained for a set period. - Excessive time during negative pressure, vacuum, and / or suction application. When the time during a negative pressure, vacuum, and / or suction application event exceeds a maximum period (e.g., which may be based on the type of wound dressing material, the size of the wound dressing material, the type of wound, the size of the wound, and / or combinations of these (and other) variables). - Dressing change, which may initiate a startup protocol to remove excess nitrogen from a restricted airflow enclosure provided by a wound dressing material adjacent to the wound site and maximize the oxygen concentration within that restricted airflow enclosure as quickly as possible.

[0027] In all of these cases, negative pressure, vacuum, and / or suction may continue within a restricted airflow enclosure provided by a wound dressing material adjacent to the wound site until a relative pressure (e.g., "maximum vacuum") of -200 to -10, preferably -100 to -70 mmHg, is achieved. Once the maximum vacuum is achieved, the wound oxygen therapy system may generate oxygen at maximum flow until the relative pressure within the dressing reaches 0 mmHg. At this point, the oxygen concentrator may be selected by the physician and continue to generate oxygen at a predetermined flow set point, referred to above as the steady state.

[0028] Some embodiments of the above-described wound oxygen therapy system will be described below with reference to the drawings. Those skilled in the art who own the present disclosure will recognize that various modifications to these embodiments are also within the scope of the present disclosure. Accordingly, different components and configurations of the wound oxygen supply system discussed below, substitutions of different components in different wound oxygen supply systems, and / or any other modifications that would be apparent to those skilled in the art who own the present disclosure are assumed to be within the scope of the present disclosure.

[0029] Referring to FIG. 1, an embodiment of the wound oxygen therapy system of the present disclosure is shown. FIG. 1 shows how an atmospheric oxygen supply from ambient air 50 having approximately 21% oxygen acts to concentrate the oxygen in ambient air 50 to produce a stream of high-concentration oxygen, i.e., O2, for example, oxygen with a purity of 99%, which enters an electrolytic cell ion exchange electrochemical oxygen concentrator 11. The high-concentration O2 is provided to an oxygen supply tube 12, and as a result, the high-concentration O2 is provided to a damaged tissue or wound site 20 via an oxygen supply system (ODS) 101.

[0030] ODS 101 may be composed of one or more of the following: a perforated tube; a porous membrane or tube; a dressing material having oxygen distribution; a soft and flexible oxygen-permeable tape or membrane; an oxygen-permeable dressing subsystem or section; or an oxygen supply material or subsystem as described in incorporated references. In a basic form, ODS 101 may not include a sensor for measuring its properties or characteristics. Alternatively, ODS 101 may incorporate one or more optional sensors or sensor interfaces 102 for measuring one or more properties, such as a temperature sensor, a pH sensor, an oxygen saturation sensor, or other relevant sensors or sensor interfaces. If ODS 101 includes optional sensors 102, their outputs may be provided to one or more ODS sensor transducers 103.

[0031] The pressure sensor 30a or the pressure sensor interface is coupled to the tube 12 and provides information to the microprocessor controller 58 via the pressure transducer 56. The microprocessor controller 58 also receives information from the user input and set point 65, and optionally from any sensors 102 present within the ODS 101 via an optional ODS sensor transducer 103. The microprocessor controller 58 outputs to the control display and alarm 68 and controls the power management system 52 that provides power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11. Thus, the information from the pressure sensor 30a may be utilized by the microprocessor controller 58 to control the power management system 52 to regulate the power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11 and adjust the oxygen (O2) provided to the ODS 101 and the wound site 20 through the tube 12. Further, the suction management system (SMS) 130 is connected to the ODS 101 and includes a liquid reservoir or container 131 and a suction system 132 that can draw exudate and other fluids from the wound site 20 via the ODS 101 and store the exudate and other fluids within the liquid container 131. The suction management system 130 is also coupled to the microprocessor controller 58 to enable, for example, the microprocessor controller 58 to control the suction generated by the suction and liquid systems.

[0032] Referring to FIG. 2, an embodiment of the disclosed wound oxygen therapy system is shown that is substantially similar to the wound oxygen therapy system described and discussed above with reference to FIG. 1, but has an ambient humidity sensor 140 that provides information to the microprocessor controller 58 via the ambient humidity transducer 141. Thus, the information from the ambient humidity sensor 140 may be utilized by the microprocessor controller 58 to control the power management system 52 to regulate the power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11 and adjust the O2 provided to the ODS 101 and the wound site 20 through the tube 12.

[0033] Referring to FIG. 3, an embodiment of the disclosed wound oxygen therapy system is shown that is substantially similar to the wound oxygen therapy system described and discussed above with reference to FIG. 2, but with the pressure sensor 30a and pressure transducer 56 removed. Thus, the microprocessor controller 58 may only require information from the ambient humidity sensor 140 to control the power management system 52 to regulate the power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11 and thereby regulate the O2 provided to the ODS 101 and the wound site 20 through the tube 12.

[0034] Referring to FIGS. 4a, 4b, and 4c, different embodiments of a wound oxygen therapy system that may be controlled by a smartphone or other mobile device 400a are shown.

[0035] For example, in FIG. 4a, the suction management system 130 may be integrated with a single ODS 101 and may provide suction and liquid storage for that single ODS 101, controlled by a single smartphone / mobile device 400a via an oxygen generation and wound monitoring (O2 GWM) device 150.

[0036] In another example shown in FIG. 4b, a single suction management system 130 may provide suction and liquid storage for a plurality of ODS 101 devices (ODS 101a, ODS 101b, and ODS 101c) controlled by a single smartphone / mobile device 400a via a single O2 GWM device 150.

[0037] In yet another example shown in FIG. 4c, a plurality of suction management systems 130 (SMS 130a, SMS 130b, and SMS 130c) are each controlled by a single smartphone / mobile device 400a via a plurality of respective O2 GWM devices 150 (O2 GWM 150a, O2 GWM 150b, and O2 GWM 150c) for a single respective ODS 101 device (ODS 101a, ODS 101b, and ODS It may provide suction and liquid storage for 101c). Thus, the wound oxygen therapy system of FIG. 4c has one O2 GWM device 150 for each ODS 101 and suction management system 130, as shown.

[0038] The O2 GWM device 150 may be controlled wirelessly or may be connected to a smartphone / mobile device 400a. In the case of a tethered connection, the O2 GWM 150 may be powered by the smartphone / mobile device 400a. In a similar manner, each suction management system 130 may be incorporated into the O2 GWM device 150 or may be separate and may be controlled wirelessly or may be connected to the O2 GWM device 150. In embodiments without the O2 GWM device 150, the suction management system 130 may be controlled wirelessly or may be connected to a microprocessor controller 48 or a smartphone / mobile device 400a.

[0039] Referring to FIG. 5, there is shown an embodiment of the wound oxygen therapy system of the present disclosure that is substantially similar to the wound oxygen therapy system described and discussed above with reference to FIG. 2, but has a flow sensor 54 that provides information about the oxygen flow from the electrolytic cell ion exchange electrochemical oxygen concentrator 11 to the tube 12 to the microprocessor controller 58 via a flow transducer 55, showing how different components may be provided by different devices (e.g., smartphone 400a and O2 GWM 150). Thus, the information from the flow sensor 54 within the O2 GWM 150 is utilized by the microprocessor controller 58 within the smartphone 400a to control the power management system 52 within the smartphone 400a to adjust the power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11 within the O2 GWM 150 to regulate the oxygen (O2) provided to the ODS 101 and the wound site 20 through the tube 12.

[0040] Referring to FIG. 6, there is shown an embodiment of the disclosed wound oxygen therapy system that is substantially similar to the wound oxygen therapy system described and discussed above with reference to FIG. 5, but with the pressure sensor 30a and pressure transducer 56, and the flow sensor 54 and flow transducer 55 removed. Thus, the microprocessor controller 58 may control the power management system 52 to adjust the power to the electrolytic cell ion exchange electrochemical oxygen concentrator 11 to regulate the oxygen (O2) profile to the ODS 101 and the wound site 20 through the tube 12, and may only require information from the ambient humidity sensor 140.

[0041] FIGS. 4a, 4b, 4c, 5, and 6 illustrate embodiments that use a smartphone / mobile device 400a as a control device for the disclosed wound oxygen therapy system. However, other computing devices, such as, for example, tablet computing devices, laptop / notebook computing devices, desktop computing devices, smartwatches, fitness trackers or other wrist-worn devices, and / or various other computing devices, may be provided as the control device while remaining within the scope of the present disclosure. 、and may be provided as the control device.

[0042] Similarly, FIGS. 1 - 6 show separate sensors and transducers for measuring pressure, humidity, flow rate, or other characteristics of the disclosed wound oxygen therapy system and providing the measured values in a form usable by the microprocessor controller 58. However, the sensor and its corresponding transducer may be combined into a single component or element that measures the system characteristic and converts the measured value into an electrical signal or other signal usable by the microprocessor controller 58.

[0043] Exemplary embodiments have been shown and described, but in the foregoing disclosure, extensive modifications, changes, and substitutions are contemplated, and in some cases, some features of the embodiments may be used without the use of corresponding other features. Accordingly, the appended claims are to be construed broadly to be consistent with the scope of the embodiments disclosed herein.

Claims

1. 1. A wound treatment system comprising: Housing; a processor disposed within the housing; at least one sensor system coupled to the processor; a power supply system disposed within the housing and coupled to the processor; an oxygen concentrator disposed within the housing and coupled to a power supply system, the oxygen concentrator including an oxygen outlet coupled to a restricted airflow enclosure provided by the dressing and positioned adjacent the wound site; a negative pressure system coupled to the processor, the negative pressure system including a negative pressure outlet coupled to a restricted airflow enclosure provided by the dressing and positioned adjacent the wound site; The processor: receiving first sensor information from the at least one sensor system; controlling power provided from the power supply system to the oxygen concentrator using the first sensor information to control the flow of oxygen produced by the oxygen concentrator and provided to the restricted airflow enclosure through the oxygen outlet; receiving second sensor information from the at least one sensor system; and actuating the negative pressure system to generate a fluid flow from the restricted airflow enclosure through the negative pressure outlet. Wound care system.

2. The system of claim 1 , wherein the second sensor information provides an occlusion alarm indicative of an occlusion at a junction of an oxygen outlet and a restricted airflow enclosure.

3. 3. The system of claim 2, wherein the blockage is caused by exudate generated at the wound site and disposed at the junction of the oxygen outlet to the restricted airflow enclosure.

5. 4. The system of claim 3, wherein operating the negative pressure system to generate a fluid flow from the restricted airflow enclosure through the negative pressure outlet acts to remove exudate disposed at the junction of the oxygen outlet to the restricted airflow enclosure.

6. 3. The system of claim 2, wherein the blockage is caused by an amount of oxygen created by an oxygen concentrator and provided to the restricted airflow enclosure through an oxygen outlet such that the pressure in the restricted airflow enclosure exceeds a maximum pressure.

7. 10. The system of claim 1, wherein activating the negative pressure system to generate a fluid flow from the restricted airflow enclosure through a negative pressure outlet acts to remove exudate generated at the wound site from the restricted airflow enclosure.

8. 10. The system of claim 1, wherein activating the negative pressure system to generate fluid flow from the restricted airflow enclosure through a negative pressure outlet acts to achieve a dressing seal when a minimum sealing pressure is not maintained for a set period of time.

9. 2. The system of claim 1, wherein activation of the negative pressure system via the fluid saturation sensor generates a fluid flow from the restricted airflow enclosure through the negative pressure outlet, acting to remove exudate generated at the wound site from the restricted airflow enclosure.

10. Activating the negative pressure system to induce fluid flow from the restricted airflow enclosure through the negative pressure outlet.

10. The system of claim 1, wherein the generating acts to maximize the oxygen concentration within the restricted airflow enclosure as quickly as possible.

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