Patent Description:
The embodiments described herein generally relate to facial mask based oxygen delivery systems, and more specifically, to facial masks that are configured to form seals between the masks and faces of individuals and illuminate portions of these facial masks upon the formation of these seals.

One of the biggest challenges for first responders, paramedics, and other medical personnel is providing patients with certain essential medical services in an effective and comprehensive manner. For example, first responders may arrive at the location of a critically ill patient in a timely manner and begin administrating various critical medical services, e.g., checking pulse rate, heart rate, providing oxygen, etc. However, conventional devices used to provide oxygen have numerous limitations. In particular, these include an inability to form an air-tight seal between the face mask and the face of an individual, which causes oxygen to escape from gaps existing between the location on an individual's face on which the facial mask is positioned and the oxygen delivery port or area of the facial mask via which oxygen is delivered to an individual. <CIT>, <CIT>, <CIT>, <CIT>, <CIT> disclose therapeutic fluid delivery devices, including, for example, therapeutic masks with sealing force detection.

Accordingly, a need exists for facial mask based oxygen delivery systems that enable first responders to provide adequate oxygen to patients via forming airtight seals between the masks and the faces of these patients, while informing these responders in real time of the strength of the seals between the masks and these patients.

In one example, a facial mask that serves as a seal and an oxygen delivery device is provided. The mask includes a facial adaptive component including a deformable member embedded in an interior region of the facial adaptive component and a plurality of circuits, each of the plurality of circuits being operable in an open-circuit state or a closed-circuit state, a battery, a plurality of light elements coupled to the battery and positioned within the deformable member, a plurality of sensors positioned at a plurality of locations within the deformable member, each of the plurality of sensors connected to one of the plurality of light elements, wherein each of the plurality of circuits include the battery, one of the plurality of light elements, and at least one of the plurality of sensors, and wherein one or more of the plurality of circuits change from operating in the open-circuit state to the closed-circuit state in response to the one or more of the plurality of sensors contacting skin on an object that is external to the mask.

In another example, the mask includes a facial adaptive component including a deformable member embedded in an interior region of the facial adaptive component, a plurality of light elements coupled to a plurality of piezoelectric elements and positioned within the deformable member, and the plurality of piezoelectric elements positioned at a plurality of locations within the deformable member, wherein each of the plurality of piezoelectric elements provides electrical power to a respective one of the plurality of light elements in response to each of the plurality of piezoelectric elements being pressed against skin on an object that is external to the mask.

The embodiments disclosed herein describe a feedback providing facial mask that enables an efficient and accurate determination of the presence of a seal between portions of the mask and the areas on the face of an individual upon which the mask is positioned. Conventionally, facial masks that are utilized to deliver oxygen to patients has numerous deficiencies. Specifically, when first responders place conventional facial masks on the faces of individuals, these responders have to rely on subjective and inaccurate techniques to determine whether the mask is providing sufficient oxygen to these individuals.

Some of these subjective methods include observing the sound of air reverberating across the cheeks of the individuals, etc. Additionally, obstacles to achieving a good seal include patient characteristics such as, e.g., presence of facial hair, lack of experience on the part of the first responder (e.g. holding the mask with one hand as opposed to two hands, etc.), etc. The lack of a proper seal between the mask and the face of an individual may result in insufficient delivery of oxygen to an individual, which may be result in poor tissue oxygenation, acid-base imbalance, and death. The feedback providing facial mask as described in the present disclosure addresses and overcome these deficiencies. Specifically, the feedback providing facial mask of the present disclosure enables first responders to efficiently and accurately determine the presence or absence of a seal (e.g., an air-tight seal) between the mask and the face of the individual upon whom the mask is positioned, namely via illuminating one or more of a plurality of light components and/or using audio components. In this way, the feedback providing facial mask can increase the amount of oxygen delivered to patients, thereby ensuring a better provision of medical services to these individuals.

As illustrated, the example feedback providing facial mask <NUM> includes an external adaptive component <NUM>, a rigid component <NUM>, and a facial adaptive component <NUM>. In embodiments, the rigid component <NUM> may be disposed or positioned between the external adaptive component <NUM> and the facial adaptive component <NUM>. In embodiments, the external adaptive component may be port or opening designed to have a circular, hexagonal, or other shape. It is noted that the external adaptive component <NUM> may be universal in that the opening may be designed to couple with an oxygen source having different specifications. For example, the external adaptive component <NUM> may couple with a portion of a self-inflating bag, a tube attached to an external oxygen source (e.g., an oxygen container), and so forth. In embodiments, such a tube may be rigid, flexible, and so forth. In embodiments, the external adaptive component <NUM> may be flexible and designed of rubber, plastic, etc..

In examples, the rigid component <NUM> may be designed to have a hollow portion. Additionally, the external adaptive component <NUM> may be detachably or permanently configured on one end of the rigid component <NUM> and the facial adaptive component <NUM> may be positioned on another end of the rigid component <NUM>. The rigid component <NUM> may be formed of a hard plastic material such as high-density polyethylene, low-density polyethylene, or other comparable material. The hollow portion may be designed such that the rigid portion may be positioned upon and conform to the bridge of the nose and chin of an individual. In embodiments, the rigid component <NUM> may include a narrow end <NUM> (e.g., narrow portion) that may be aligned with, conform to, and positioned on the nose of an individual and wide end <NUM> (e.g., wide portion) that may be aligned with, conform to, and positioned on the chin of the individual. In embodiments, the facial adaptive component <NUM> may include a deformable member that is embedded within the facial adaptive component <NUM>. For example, the deformable member may include or be formed of silicone material. Additionally, the facial adaptive component <NUM> may be formed of a flexible plastic material or cushion that facilitates comfortable positioned on the face of an individual.

In examples, the example feedback providing facial mask <NUM> may be designed such that, when attached to the face of an individual (e.g., a critically ill patient), portions of the facial adaptive component <NUM> directly contact areas on an individual's face extending from the bridge of the nose to the chin and approximately from a middle of one cheek to the middle of another cheek. The rigid component <NUM> may be positioned on top of the facial adaptive component, and the external adaptive component <NUM> may be detachably or permanently positioned on top of the rigid component <NUM>. It is further noted that the external adaptive component <NUM>, the rigid component <NUM>, and the facial adaptive component <NUM> may be attached to each other via an adhesive, mechanical coupling components, and/or a combination thereof.

<FIG> depicts an example design of a feedback providing facial mask as described in <FIG> with a plurality of circuits embedded at various locations within the deformable member of the facial adaptive component <NUM>, according to one or more embodiments described and illustrated herein. In embodiments, each of the plurality of circuits includes a battery, one or more light components <NUM>, and one or more sensors. The battery is coupled to each of the light components <NUM> and each of the sensors and powers operation of the sensors and the light components <NUM>. For example, the light components <NUM> may be connected to the battery in parallel as shown in <FIG>. It is noted that each of the plurality of circuits may operate in either a closed-circuit state or an open-circuit state. Each of the sensors may be embedded at various locations within the deformable member such that each of these sensors is configured to contact a separate and distinct portion on the face of the individual. Each of the lighting components may be light emitting diodes positioned in a particular portion of the deformable member, e.g., within a certain proximity of each sensor. Specifically, each light emitting diode may be positioned within a short distance of a corresponding sensor and be configured to operate in conjunction with the corresponding sensor.

In some examples, the feedback providing facial mask may include only a single circuit that may operate in a closed-circuit state or an open-circuit state. The single circuit may include a battery, a plurality of light components <NUM>, and a plurality of sensors, all of which are connected in series.

During an example operation of the feedback providing facial mask, e.g., when the mask is positioned on a face of an individual, multiple sensors may directly come in contact with multiple areas on the face. Upon a sensor establishing a threshold level of contact with a portion of the skin, the circuit that includes this sensor may change operating from an open-circuit state to a closed-circuit state. Additionally, responsive to the change from the open-circuit state to the closed-circuit state, the light emitting diode adjacent to the sensor may be illuminated, e.g., by the battery. In other words, upon a threshold level of contact with the portion of skin on an individual's face, a clear path may form for current to flow from the cathode end of a battery to the anode end. As such, any components that are positioned along the path will be operable. Specifically, any and all light components located adjacent to these sensors will be illuminated by the current flow. It is noted that, in embodiments, the battery, the sensors, the skin portions with which the sensors contact, and the light components are all connected to each other in series.

In another example, an audio component (e.g., an alarm, buzzer, etc.) or a plurality of audio components may be embedded adjacent to each of the plurality of sensors and also be powered by the battery. Specifically, in this embodiment, the audio component, the sensors, the skin portions with which the sensors contact, and the lighting components may be connected in series as well. As such, in the closed-circuit state, the current flowing from the cathode end to the anode end may illuminate all lighting components located along the path of the current, in addition to powering the audio component such that the audio component outputs sound. It is also noted that, in this embodiment, the audio component may be operational based on tactile feedback. Additionally, in instances, a threshold level of pressure may be applied to a subset of the plurality of sensors, while a pressure less than the threshold level may be applied to another subset of the plurality of sensors.

In such a scenario, only a subset of the light components, namely the ones adjacent to or associated with the subset of the plurality of sensors on which the threshold level of pressure is applied may be illuminated. The other light components may not be illuminated. Specifically because the current path does not extend to all of the lighting components. Such a scenario or status may inform a first responder that a partial seal has been formed with respect to some of the circuits, but he or she needs to make adjustments to the position of the mask or increase pressure on some portions of the mask in order to form the seal with respect to the remaining circuits. In this way, the first responders may determine, in real time, whether seals are formed without having to rely on inaccurate and subject techniques such as observing or noticing the sound of air reverberating across the cheeks, and so forth.

In yet another example, the sensors may be a plurality of piezoelectric elements embedded within various locations in the deformable member along the boundary of the facial adaptive component <NUM>. Additionally, each of the plurality of piezoelectric elements may include a lighting component (e.g., a light emitting diode) positioned within a certain proximity of the element. Each of these piezoelectric elements operates such that when a feedback providing mask is positioned on a face of an individual, one or more of the piezoelectric elements may contact various portions of the face of the individual. Upon contact with the face of an individual, each of the piezoelectric elements will experience a certain level of mechanical pressure.

The mechanical pressure will be utilized by the piezoelectric element to generate an output voltage that will power a particular light emitting diode positioned adjacent to or within a certain vicinity of the piezoelectric element. It is noted that the piezoelectric elements do not require an outside power source (e.g., a battery) to power them. Instead, these elements may utilize an internal charge amplifier (embedded within or installed as part of the piezoelectric element) that converts the mechanical strain or pressure applied on the piezoelectric element to a voltage amount that is output for and used to, e.g., illuminate a light emitting diode positioned nearby. As such, in this design or embodiment of the feedback providing facial mask, a battery may not be included.

<FIG> depicts an example configuration of an operation of a circuit of the plurality of circuits included as part of the feedback providing facial mask, according to one or more embodiments described and illustrated herein. Specifically, <FIG> depicts a schematic illustration of an example circuit <NUM> of the plurality of circuits during the point at which the circuit changes operating from an open-circuit state to a closed-circuit state. Upon the feedback providing facial mask being positioned on a face of an individual, the example sensors <NUM> of the circuit <NUM> may contact skin <NUM> located on the individual's face. Contact with the skin closes the state of the circuit <NUM> such that there is a clear path for the current to flow from the cathode end of the example battery <NUM> to the anode end of the example battery <NUM>. In operation, the clear path for the current results in the current illuminating the example light emitting diode <NUM>. The light emitting diode <NUM> may correspond to one of the light components <NUM> in <FIG>. However, if there is gap or break in the current path, the current will be unable to flow from the cathode end of the example battery <NUM> to the anode end, thereby preventing the illumination of the example light emitting diode <NUM>. In some embodiments, the light intensity of the light emitting diode <NUM> may be varied based on the degree of the contact between the sensors <NUM> and the skin <NUM>. For example, when the sensors <NUM> are tightly pressed against the skin <NUM>, the light emitting diode <NUM> may emit brighter light than the light emitted by the light emitting diode <NUM> when the sensors <NUM> are loosely pressed against the skin <NUM>. As another example, when the entire surface of the sensors <NUM> contacts the skin <NUM>, the light emitting diode <NUM> may emit brighter light than the light emitted by the light emitting diode <NUM> when <NUM>% of the surface of the sensors <NUM> contact the skin <NUM>.

In examples, such a gap may result for various reasons. For example, if a first responder or medical personnel fails to accurately place the feedback providing facial mask on an individual's face such that one or more of the sensors fail to contact skin, a gap may form between the sensor on the skin on the individual's face. Additionally, the gap will result in the lack of illumination of an LED located adjacent to and coupled to the sensor and a battery positioned near the sensor. As such, the first responder may, in real time, be able to determine the need to make an adjustment in the position of the feedback providing facial mask on the face of the individual.

In examples, in an example operation of the feedback providing facial mask, a subset of the circuits may be operating in a closed-circuit state and another subset of the circuits may be operating in an open-circuit state. The circuits operating in the closed-circuit state may not have a gap between the sensors of these circuits and the face of an individual upon which the mask may be positioned, and the circuits operating in an open-circuit state may have gaps between the sensors of these circuits and the face of an individual upon which the mask may be positioned.

Additionally, in examples, the subset of circuits that operate in a closed-circuit state are indicative of a presence of a seal (e.g., an air tight seal) between the portions of facial adaptive components in which the subset of circuits are located and a part of the face of an individual upon which the feedback providing mask is positioned. By contrast, the subset of circuits that operate in an open-circuit state are indicative of the lack of a presence of a seal (e.g., an air tight seal) between the portions of the facial adaptive component on which this subset of circuits are located and a part of the individual upon which the feedback providing mask is positioned. As such, first responders and medical personnel may view the illumination status of the plurality of light components (e.g., feedback provided by the mask) and determine, in real time, whether a seal exists between various parts of the mask and a patient's face, thereby ensuring that oxygen is delivered to a particular patient, namely without escaping through gaps between the mask and the patient's face.

<FIG> depicts another example configuration of an operation of a plurality of circuits included as part of the feedback providing facial mask of the present disclosure, according to one or more embodiments described and illustrated herein. Specifically, <FIG> depicts a plurality of example circuits <NUM> that are connected in parallel and configured to be powered by an example battery <NUM>. Specifically, the plurality of example circuits <NUM> include the example battery <NUM>, a plurality of example sensors <NUM>, and a plurality of example light components <NUM> that are connected to the plurality of example sensors <NUM> in parallel. In embodiments, if each of the plurality of example sensors <NUM> contact various portions of an individual's face upon which there is skin, each of the plurality of example circuits <NUM> may change operation from an open-circuit state to a closed-circuit state. As described above, in the closed-circuit state, each of the plurality of example light components <NUM> may be illuminated because, based on the contact of the sensors with skin on the individual's face, a path may be available for the current to flow from the cathode end of the example battery <NUM> to the anode end of the example battery <NUM>. As the current flows along this path, it will illuminate the plurality of example light components <NUM> and power operation of the plurality of example sensors <NUM>. In other embodiments, audio components (e.g., a speaker, a buzzer, etc.) may be included within the plurality of example circuits <NUM>. These audio components may also be powered by the example battery <NUM>.

<FIG> depicts an example operation of the feedback providing facial mask on the face of an example patient <NUM> such that the plurality of circuits of the mask are operating in an open-circuit state, according to one or more embodiments described and illustrated herein. In an example operation, a first responder may receive a call from a critically ill patient (e.g., example patient <NUM>) and travel to the location of the patient within a short time frame. Upon arrival, the first responder may determine that the example patient <NUM> is in immediate need of oxygen and may begin fitting the mask on the face of the example patient <NUM>. However, if the example feedback providing facial mask <NUM> is lightly placed on top of the example patient <NUM>, there may be gaps between the patient's face and the example facial adaptive component of the example feedback providing facial mask <NUM>. Consequently, as illustrated in <FIG>, none of the light components of the example feedback providing facial mask <NUM> are illuminated. As previously described, one or more of the lighting components may fail to illuminate for a variety of other reasons, e.g., the first responder holding the example facial adaptive portion incorrectly over the face of the example patient <NUM> (e.g., only with one hand), not placing the middle portion of the mask directly over the mount of the example patient <NUM>, and so forth. Other such reasons are contemplated.

<FIG> illustrates an example operation of the feedback providing facial mask on the face of an example patient <NUM> such that the plurality of circuits of the mask are operating in a closed-circuit state, according to one or more embodiments described and illustrated herein. A first responder, as described in <FIG>, may respond to an emergency call from a critically ill patient (e.g., the example patient <NUM>), may arrive at the location of the patient, and begin administrating emergency medical services, including providing oxygen. In embodiments, as described in <FIG>, the first responder may position the feedback providing facial mask on the face of the critically ill patient in a particular manner and notice that none of the light components are illuminated. Such an operating state may, in real time, indicate to the first responder that there is a lack of a seal between the face of the example patient <NUM> and the example feedback providing facial mask <NUM> of the present disclosure.

In response, the first responder may adjust the position of the mask on the patient's face in order to ensure that a seal is formed. For example, the first responder may increase the pressure with which the example feedback providing facial mask <NUM> is placed on the face of patient's face, move the mask left, right, up, or down, etc., to make sure that the facial adaptive component of the example feedback providing facial mask <NUM> directly contacts areas on an individual's face extending from the bridge of the nose to the chin and approximately from a middle of one cheek to the middle of another cheek. Upon applying the requisite amount of pressure such that the sensors embedded in the facial adaptive component contacts various portions of the face of the example patient <NUM> having skin, the plurality of circuits in which these sensors are embedded close a path for current to flow from the cathode end of the battery to the anode end. The current illuminates any and all light components <NUM> (e.g., light emitting diodes) adjacent to these sensors, as illustrated in <FIG>. In this way, the first responder is notified, in real time, of the presence of, e.g., an air-tight seal between the example feedback providing facial mask <NUM> and the example patient <NUM>.

Such a seal increases the amount of oxygen that is delivered to the example patient <NUM> via the mask by reducing any instance of oxygen leakage. Additionally, as described above, in another embodiments, an audio component (e.g., a buzzer) may be embedded within the facial adaptive component and be configured to output sound simultaneously with the illuminated light components. The audio component may be activated by tactile feedback and be powered by a battery. In embodiments, the audio component may be placed in series with the sensors and the light components such that the current that illuminates the light components may be utilized to operate the audio component.

It should be understood that the embodiments described herein relate to a feedback providing facial mask. The mask includes a facial adaptive component including a deformable member embedded in an interior region of the facial adaptive component and circuits, each of the circuits being operable in an open-circuit state or a closed-circuit state. The mask also includes a battery, light elements coupled to the battery and positioned within the deformable member, and sensors positioned at a plurality of locations within the deformable member. Each of the plurality of sensors connected to one of the light elements, wherein each of the circuits include the battery, one of the light elements, and at least one of the plurality of sensors, and wherein one or more of the circuits change from operating in the open-circuit state to the closed-circuit state in response to the one or more of the sensors contacting skin on an object that is external to the mask.

The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms, including "at least one," unless the content clearly indicates otherwise. "Or" means "and/or. The term "or a combination thereof" means a combination including at least one of the foregoing elements.

It is noted that the terms "substantially" and "about" may be utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation. These terms are also utilized herein to represent the degree by which a quantitative representation may vary from a stated reference without resulting in a change in the basic function of the subject matter at issue.

Claim 1:
A mask comprising:
a facial adaptive component (<NUM>) including a deformable member embedded in an interior region of the facial adaptive component (<NUM>) and a plurality of circuits (<NUM>), each of the plurality of circuits being operable in an open-circuit state or a closed-circuit state;
a battery (<NUM>);
a plurality of light elements (<NUM>) coupled to the battery and positioned within the deformable member; and
a plurality of sensors (<NUM>) positioned at a plurality of locations within the deformable member, each of the plurality of sensors connected to one of the plurality of light elements,
wherein each of the plurality of circuits include the battery, one of the plurality of light elements, and at least one of the plurality of sensors,
wherein one or more of the plurality of circuits change from operating in the open-circuit state to the closed-circuit state in response to one or more of the plurality of sensors contacting skin on an object that is external to the mask; and
characterized in that the plurality of light elements emit varied light intensity based on a degree of contact between the plurality of sensors and the skin.