Respiratory therapeutic electric heat source face mask

Abstract

A therapeutic face mask apparatus for wearers with resistant respiratory viruses, is connected to a heat gun that provides adjustable heated and humidified air for inhalation. The heat gun heats ambient air that is breathed in through the face mask during normal breathing, which is worn over the nose and mouth of a person. A temperature gauge monitors temperature for future adjustment of the amount of heat generating current to raise the heat to a predetermined temperature to deactivate resistant viruses in compromised upper and/or lower respiratory systems of the wearer. The air in the chamber is heated for inhalation by a resistive element in the heat gun. The temperature of the resistive material (and by extension the warm air generated), is regulated/adjusted by increasing or decreasing the current output settings on the power source, so that heated and pressured air is produced.

Claims

1. A method of destroying a virus causing COVID-19 disease, (SARS-CoV-2) within the respiratory system of a person, comprising the steps of: placing a mask on the face of said person, said mask comprising a housing mask covering the nose and mouth of said person; connecting a heated air source to deliver ambient atmospheric air through a hose to said mask; heating said air to a predetermined temperature exceeding activation temperature of the virus causing COVID-19 disease, (SARS-CoV-2) to destroy the virus causing COVID-19 disease, (SARS-CoV-2) in the person's respiratory system, said predetermined temperature being in a range of from about 130 F. to about 175 F.; connecting a safety interlock in line with the hose, wherein the safety interlock separately monitors a temperature and a pressure of said delivered ambient atmospheric air from said heated air source via said hose and electrically disconnects the heated air source from a power source if said temperature or said pressure of said delivered ambient atmospheric air to said person exceed safety limits due to human error in set-up or to malfunctioning said heated air source.

2. The method of treating a virus causing COVID-19 disease as in claim 1, further comprising the steps of providing the heated air from a heat gun to upper and lower respiratory tracts of the person, at predetermined therapeutic thresholds of temperature air, pressure and exposure time duration, to the exact organs of SARS-CoV-2 infection, in the upper and lower respiratory tracts of the person, while sparing exposure to the rest of the body.

3. A therapeutic face mask apparatus for persons afflicted with the virus causing COVID-19 disease, (SARS-CoV-2) comprising: a power source; a heat source that provides adjustable heated and pressurized air for inhalation and td deliver ambient atmospheric air through a flexible conduit to a face mask; said face mask worn over and covering the nose and mouth of a person; said flexible conduit providing said heated and pressurized air to said person through said face mask, said heated and pressurized air is breathed in through said face mask during respiratory breathing of the person; a safety interlock to separately monitor a temperature and a pressure of said heated and pressurized air delivered to said person via said flexible conduit, wherein the safety interlock is positioned in line with the flexible conduit, to electrically disconnect said power source from said heat source if said temperature or said pressure of said air delivered to said person exceed safety limits due to human error in set-up or to said heat source malfunction.

4. The therapeutic face mask apparatus as in claim 3 wherein said heat source has a temperature gauge monitoring temperature for adjustment of the amount of heat generating current to raise the heat to predetermined temperature to treat the person afflicted with the virus causing COVID-19 disease, (SARS-CoV-2); wherein the air for inhalation by the person in said heat source is heated by an electrically resistive material contacting powered air from the heat source; said temperature of said resistive material and of the heated air generated being regulated/adjusted by increasing or decreasing the current output settings on said power source, so that heated air is produced at a first predetermined temperature capable of inactivating the virus causing COVID-19 disease, (SARS-CoV-2) for a predetermined time.

5. The therapeutic face mask apparatus as in claim 3 wherein said heat source is a heat gun having temperature and air pressure controls capable of maintaining said heated air below a predetermined upper limit threshold of temperature and air pressure for safe inhalation.

6. The therapeutic face mask apparatus as in claim 5 wherein said heat source includes a switch wherein if said predetermined threshold temperature and air pressure for safe inhalation is exceeded, the heat gun will not operate and a visual display with display indicates an OFF mode.

7. The therapeutic face mask apparatus as in claim 5, wherein said heat gun is configured to deploy heated air in a range of from 80 F. to 300 F., for heating said air to a predetermined temperature exceeding activation temperature of the virus causing COVID-19 disease, (SARS-CoV-2) to destroy the selected pathogen virus causing COVID-19 disease, (SARS-CoV-2) in the person's respiratory system.

8. The therapeutic face mask apparatus as in claim 7, wherein said heat gun is configured to deploy heated air in a range of from 130 F. to 200 F., for heating said air to a predetermined temperature exceeding activation temperature of the virus causing COVID-19 disease, (SARS-CoV-2) high to destroy the selected pathogen virus causing COVID-19 disease, (SARS-CoV-2) in the person's respiratory system.

9. The therapeutic face mask apparatus as in claim 7, wherein said heat gun is configured to deploy heated air in a range of from 130 F. to 175 F., for heating said air to a predetermined temperature exceeding activation temperature of the virus causing COVID-19 disease, (SARS-CoV-2) high to destroy the selected pathogen virus causing COVID-19 disease, (SARS-CoV-2) in the person's respiratory system.

10. The therapeutic face mask apparatus as in claim 7, wherein said heat gun is configured to deploy heated air in a range of 105 F. to 300 F., for a period of time of about 15 minutes.

11. The therapeutic face mask apparatus as in claim 5, wherein said heat gun includes a lock for locking a predetermined temperature range and the range of air pressure between said first predetermined temperature and air pressure capable of inactivating the virus causing COVID-19 disease (SARS-CoV-2) and the second predetermined upper limit threshold temperature and air pressure for safe inhalation.

12. The therapeutic face mask apparatus as in claim 3 further comprising a lock locking a predetermined temperature range and said pressure between a first predetermined temperature and air pressure capable of inactivating the virus causing COVID-19 disease (SARS-CoV-2) and a second predetermined upper limit threshold temperature and air pressure for safe inhalation.

13. The therapeutic face mask apparatus as in claim 12 wherein said heat gun includes a keyboard capable of programing said first and second predetermined temperatures and air pressures.

14. The face mask of claim 3 which said power source is AC power transformed to a low voltage DC power source.

15. The face mask of claim 14 in which said power source is AC power.

16. The face mask of claim 3 in which said power source is a low voltage power source.

17. The face mask of claim 16 which said power source is a battery.

18. The therapeutic face mask apparatus of claim 3, wherein the safety interlock is built into a collar adapter plumbed between said heat source at an air input end and said flexible conduit at an air output end such that air delivered to said person by said face mask is sampled therein.

19. The therapeutic face mask apparatus of claim 18, wherein the safety interlock built into the collar adapter further comprises: a thermal protector switch factory-set at a predetermined temperature safety limit; a pressure sensing switch factory-set at the pressure safety limit; an AC relay; and, an ON momentary push button.

20. A method of treating selected pathogens and lung diseases, selected from the group consisting of bacteria, viruses, fungi, mycoplasma, asthma, mesothelioma, lung cancer, dysplasia, chronic obstructive pulmonary disease (COPD), emphysema, chronic bronchitis, pulmonary fibrosis, cystic fibrosis, pneumonia, heart disease and breast, prostate, pancreatic, skin, non-Hodgkin lymphoma, kidney, thyroid, brain, endometrial leukemia, sarcoma, colorectal, gastrointestinal and lymphoma cancers, which metastasize from other sites to the lung, comprising the steps of: placing a mask on the face of a person, said mask covering the nose and mouth of the person; connecting a heated air source to deliver ambient atmospheric air through a hose to said mask; and, heating said air to a temperature exceeding activation temperature of the pathogen to destroy the selected pathogen; connecting a safety interlock in line with the hose, wherein the safety interlock separately monitors a temperature and a pressure of said delivered ambient atmospheric air from said heated air source via said hose and electrically disconnects the heated air source from a power source if said temperature or said pressure of said delivered ambient atmospheric air to said person exceed safety limits due to human error in set-up or to malfunctioning said heated air source.

21. A method of augmenting cytotoxic chemotherapy, radiation or immunotherapy for cancers of the lung, upper and lower respiratory tract, and cancers of body parts of a person by supplying heated air to the person afflicted with said cancers of the lung, upper and lower respiratory tract, and cancers of body parts of a person, comprising the steps of: placing a CPAP mask on the face of said person, said mask comprising a housing mask covering said nose and mouth of said person; connecting a heated air source to deliver pure, ambient, atmospheric air through a hose to said CPAP mask; heating said air to a temperature exceeding activation temperature of a pathogen, to destroy the selected pathogen in person's respiratory system; and wherein said heated air causes an immunological upregulation of immune stimulatory molecules, such as heat shock proteins, at the sites of the person being treated with said immunotherapy; connecting a safety interlock in line with the hose, wherein the safety interlock separately monitors a temperature and a pressure of said delivered ambient atmospheric air from said heated air source via said hose and electrically disconnects the heated air source from a power source if said temperature or said pressure of said delivered ambient atmospheric air to said person exceed safety limits due to human error in set-up or to malfunctioning said heated air source.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention can best be understood in connection with the accompanying drawings. It is noted that the invention is not limited to the precise embodiments shown in the following drawings, in which:

(2) FIG. 1 is a front perspective view of a person wearing a face mask connected by a flexible tube having safety ball valves to a heat source, such as a heat gun.

(3) FIG. 1A is a front perspective view of a person wearing a face mask connected by a flexible tube to a heat source, such as a heat gun.

(4) FIG. 2 is a top detail view of the heat gun of FIG. 1, taken at arrow 2 of FIG. 1, showing a display and control knobs, where, after the control knobs are turned to the appropriate heated air temperature and appropriate output air pressure, the locking key can set the predetermined air temperature and air pressure locked in place.

(5) FIG. 2A is a close-up detail rear view of the control portion of the heat gun of FIG. 1.

(6) FIG. 3 is a top detail view of the heat gun of FIG. 1A, taken at arrow 3 of FIG. 1A, showing a display with programmable control keys.

(7) FIG. 3A is a block diagram of the heat gun of FIGS. 2 and 3, shown within the housing of the heat gun of FIG. 1.

(8) FIG. 4 is a perspective view of a child patient in bed, with a heat gun suspended on a rack, providing safe and needed heated temperature air, at an acceptably tolerable inhalation air pressure, through a flexible heat resistant conduit tube, to a heat mask covering the nose and mouth of the child patient.

(9) FIG. 5 is a perspective view of a hospital cart, having an optional generator, tube to a manifold, and having four face masks.

(10) FIGS. 6, 6A and 6B show an optional real time collar adapter for the heat gun of FIGS. 1, 1A, 2, 3, 4 and 5.

(11) FIG. 7 is a perspective view of an ambulatory adult, with a portable cordless heat gun suspended in a holster and powered by a rechargeable battery.

(12) FIG. 7A is a schematic diagram of the cordless, portable, rechargeable heat source of FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

(13) The present invention discloses high temperature, high humidity therapeutic heat masks for treating resistant pathogens, such as SARS-CoV-2 virus, and other lung diseases, in drawing FIGS. 1-7.

(14) FIG. 1 shows a first embodiment 2, including a therapeutic combination of a heat source, such as a heat gun 30, connected by a flexible tubing conduit 20 to a face mask 10 for persons afflicted with the virus causing COVID-19 disease, (SARS-CoV-2). The heat source 30 provides adjustable heated air and therapeutically tolerable pressurized air for inhalation by a patient afflicted with COVID-19 disease, caused by the specific Coronavirus known as SARS CoV-2 virus. A face mask 10 includes a rotatable connector 11 attachable at one end to a heat resistant flexible conduit tube 20, similar to that of a CPAP machine. The face mask 10 also has a flexible cushion 12, general triangular shaped, covering the nose at its top end, with tapered flexible, sealed side edges, and a rounded bottom, sealed edge, covering the mouth of the patient, Headgear straps 14 are provided to wrap around the skull of the patient, to maintain the face mask 10 in a secure, non-movable position covering the nose mouth and adjacent face, cheek and chin areas of the patient. The face mask 10 is therefore worn over and covers the nose and mouth of the person. The face mask 10 is preferably made from heat resistive materials throughout, in order to withstand heat in excess of about 200 F. or more, if required.

(15) Optionally, the face mask 10 may have an optional built-in thermometer 15 for a health care provider to visually monitor the temperature within the face mask 10.

(16) Further, optionally, for extra sealing around the circumferential edge of the face mask 10, an extra circumferential cushioned standoff, having the same circumferential edge shape as of the face mask 10, and made of foam or other suitable, pliable, cushioned materials, may provide a further sealing interface for the face mask 10.

(17) The heat resistant flexible conduit tube 20 provides the heated and pressurized air from heat gun 30 to the patient, through the face mask 10, wherein the heated and pressurized air is inhaled and breathed in through the face mask 10, during respiratory breathing of the patient. The aforementioned heat source, such as, but not limited to, a heat gun 30, includes a forward barrel portion 31 with a nozzle 33 at a distal end and a person manipulatable handle 35, preferably trigger shaped, wherein the handle extends below the enclosed mechanical and heat producing components, including an electrical power source, such as an electric motor 34, powered by an AC power source 37 connected by a wire 39 to the 120V AC power source 37 in a wall outlet or from a generator 352 shown in FIG. 5, or a DC rechargeable power source 570, shown in in FIG. 7, such as a lithium ion battery, or an AC source transformed to a DC power source, with a built-in power connector inside the heat gun.

(18) The heat gun 30 also includes a resistive component, wherein a fan 147, as shown in FIG. 3A, pulls or blows air past the heating resistive elements 138, and out through the barrel 31 and nozzle 33, into the heat resistant flexible conduit tubing 20 and thereafter through the face mask 10 into the nose, throat and upper respiratory system of the patient, to expose the epithelial cells infected with SARS CoV-2 virus embedded therein to heated air, to inactivate the SARS-CoV-2 virus and to promote an immunostimulatory response in the patient. While fan 147 is shown FIG. 3A in a forward position pulling air therethrough, it can also be positioned to the rear (not shown), behind the resistive elements 138, pushing the air past the resistive elements 138.

(19) The heat gun 30 preferably has a control panel 41 with a visual display screen 46 and controls 45a, 45b with an internal temperature gauge sensor 140 (shown in FIG. 3A) monitoring temperature for adjustment of the amount of heat generating current to raise the heat to a predetermined temperature, and an air pressure sensor to monitor air pressure at a human tolerable level, mimicking air pressure normally provided to a CPAP person patient having sleep apnea or other treatable respiratory obstructive diseases, to treat the person afflicted with the virus causing COVID-19 disease, (SARS-CoV-2).

(20) As shown in FIG. 3A, the air for inhalation by the patient is heated in the heat source, such as heat gun 30, by an electrically resistive material 138 contacting a powered airflow produced by a fan 147 in the heat source, such as heat gun 30. Depending upon the position of the fan 147, it can pull or push the air past the electrically resistive elements 138 inside the heat gun 30 or 130. The temperature of the resistive elements 138 and of the heated air generated are regulated/adjusted by increasing or decreasing the current output settings on the motor 134, so that heated air is produced at a first predetermined temperature capable of inactivating the virus causing COVID-19 disease, (SARS-CoV-2) for a predetermined time and to promote an immunostimulatory response in the person.

(21) FIG. 1 also shows, for extra safety control, first and second ball valves 48, 49 which are deployed in the flexible heat resistant tubing conduit 20 between the heat gun 30 and the CPAP-type face mask 10. A first ball valve 48, having a manually rotatable handle 48a, may be deployed as a T configuration, in line with the heat gun output nozzle 33 and the hose 48a. The ball valve 48 is connected at the T with the hose 48b coming off of it, functioning as a pressure bleed valve. A nipple 25 engages within the flexible conduit tubing 20 at one end, which is in-line with the first ball valve 48, and then friction fits over the nozzle 33 of the heat gun 30. A second ball valve 49, also with a manually rotatable handle 49a, acts as a resister valve deployed near the mask 10, which restricts air from the heat gun 30 traveling into the mask 10 if it exceeds medically acceptable air pressure values. Manipulation of these two ball valves 48, 49 achieves the desired airflow and heated temperature of the air being delivered to the person through the CPAP-type mask 10.

(22) The heat gun 30 is capable of providing heated air from about 80 F. to 900 F., but in use, is limited to providing heated air to a patient at a minimum temperature of about 130 F, up to a maximum of about 275 F. These temperatures mimic the human tolerable temperatures of from about 130 F. to about 230 F. to which humans are exposed to in heated saunas. These elevated temperatures of heated air contact the epithelial cells inside the throat and upper respiratory system of the patient, to which the SARS CoV-2 virus are attached.

(23) The predetermined temperature, which may vary according to medical needs, initiates inactivation of the SARS Cov-2 virus causing COVID-19 disease, in the infected upper respiratory surfaces of the patient. This threshold temperature can vary from typical about 80 F. to 275 F., preferably at least 132.8 F., up to about 230 F. when combined with a relative humidity, and at a tolerable air pressure mimicking air pressure to a respiratory obstructive/sleep apnea patient using analogously a CPAP machine. While normally CPAP machines treat obstructive respiratory conditions, such as sleep apnea, at a temperature of between 60 and 95 F., depending upon patient comfort, they generally are built to shut off at a 95 F. threshold.

(24) Hence, for the treatment of COVID-19 disease caused by the SARS CoV-2 virus, the temperature should be a minimum of about 130 F., as evidenced in the Chan and WHO in vitro tests results, op cit, listed herein.

(25) This elevated heat treatment which can vary in time from about a minimum of 15 minutes, up to 24 hours, as per medical instructions, is believed to have a synergistic effect on inactivation of the SARS CoV-2 virus, and hopefully a reduction in COVID-19 disease within the respiratory systems of the patient.

(26) FIG. 1A shows an alternate embodiment 103, including a therapeutic combination of a heat source, such as a heat gun 130, connected by a flexible tubing conduit 120 to a face mask 110 for persons afflicted with the virus causing COVID-19 disease, (SARS-CoV-2). The heat source 130 also provides adjustable heated air and therapeutically tolerable pressurized air for inhalation by a patient afflicted with Covid-19 disease, caused by the specific Coronavirus known as SARS CoV-2 virus. The face mask 110 also includes a rotatable connector 111 attachable at one end to the heat resistant flexible conduit tube 120, similar to that of a CPAP machine. The face mask 110 also has a flexible cushion 112, generally triangular shaped, covering the nose at its top end, with tapered flexible, sealed side edges, and a rounded bottom, sealed edge, covering the mouth of the patient. Headgear straps 114 are provided to wrap around the skull of the patient, to maintain the face mask 110 in a secure, non-movable position covering the nose mouth and adjacent face, cheek and chin areas of the patient. The face mask 110 of FIG. 1A is also therefore worn over, and covers, the nose and mouth of the patient. Optionally, the face mask 110 may have an optional built-in thermometer 115 for a health care provider to visually monitor the temperature within the face mask 110.

(27) The heat resistant flexible conduit tube 120 provides the heated and pressurized air to the patient, through the face mask 110, wherein the heated and pressurized air is breathed in through the face mask during respiratory breathing of the patient. The aforementioned heat source, such as, but not limited to, a heat gun 130, includes a forward barrel portion 131 with a nozzle 133 at a distal end and a person manipulatable handle 135, preferably trigger shaped, wherein the handle 135 extends below the enclosed mechanical and heat producing components, including an electrical power source, such as an electric motor 134, powered by an AC power source 137, connected by a wire 139 to 120V AC power 137 in a wall outlet or from a generator 352 shown in FIG. 5, or a DC rechargeable power source 534, such as a lithium ion battery, as shown in a portable, cordless heat gun 530 of FIG. 7, or an AC source transformed to a DC power source, with a built-in power connector inside the heat gun.

(28) The heat gun of FIG. 1A also includes resistive elements 138, wherein a fan 147 pulls or blows air past the heating resistive elements 138, and out through the barrel 131 and nozzle 133, into the heat resistive flexible conduit tubing 120, and thereafter through the face mask 110 into the nose, throat and upper respiratory system of the patient, to expose the epithelial cells infected with SARS CoV-2 virus embedded therein, for inactivation of the SARS-CoV-2 virus and to promote an immunostimulatory response in the person.

(29) The heat gun 130 of FIG. 1A also preferably has a control panel 141 with a visual display screen 146 and controls 144a, 144b, 146a, 146b, with an interior temperature sensor 140 (shown in FIG. 3A) monitoring temperature for adjustment of the amount of heat generating current, to raise the heat to a predetermined temperature, and an air pressure gauge to monitor air pressure at a human tolerable level mimicking air pressure normally provided to a CPAP person patient having sleep apnea or other treatable respiratory obstructive diseases, to treat the person afflicted with the virus causing COVID-19 disease, (SARS-CoV-2). The air for inhalation by the patient is heated in the heat source, such as heat gun 130, by electrically resistive elements 138 contacting a powered airflow produced by a fan 147 in the heat gun 130. The temperature of the resistive elements 138 and of the heated air generated are regulated/adjusted by increasing or decreasing the current output settings on the motor 134, so that heated air is produced at a first predetermined temperature capable of inactivating the virus causing COVID-19 disease, (SARS-CoV-2) for a predetermined time and to promote an immunostimulatory response in the person.

(30) However, because of safety controls built into, and/or associated with the heat gun 130 of FIG. 1A, the heat gun 130 does not have the first and second ball valves 48, 49 of the heat gun 30 of FIG. 1, which are deployed in the flexible heat resistant tubing 20 between the heat gun heat 30 and the CPAP-type face mask 10 of FIG. 1. Instead, the monitor controls of the control panel 141 regulate the heat and air pressure coming out of the heat gun 130 of FIG. 1A, and into the face mask 110 shown in FIG. 1A. The built-in and/or associated controls 141 of the heat gun 130 of FIG. 1A achieve the desired airflow and heated temperature of the air being delivered to the person through the CPAP-type mask 110.

(31) The heat gun 130 of FIG. 1A is also capable of providing heated air from about 80 F. to 900 F., but in use, is limited to providing heated air at a minimum temperature of about 130 F., up to a maximum of about 300 F. These temperatures mimic the human tolerable temperatures of from about 130 F. to about 230 F. to which humans are exposed to in heated saunas. These elevated temperatures of heated air also contact the epithelial cells inside the throat and upper respiratory system of the patient, to which the SARS CoV-2 virus is attached and embedded within the epithelial cells of the patients upper and lower respiratory systems.

(32) The predetermined temperature outputted by the heat gun 30 of FIG. 1 and the heat gun 30 of FIG. 1A, which may vary according to medical needs, initiates inactivation of the SARS CoV-2 virus causing COVID-19 disease, in the infected upper respiratory epithelial surfaces of the wearer. This threshold temperature can vary from typically about 80 F. to 300 F., preferably at least 132.8 F., up to about 230 F. when combined with a relative humidity, and at a tolerable air pressure mimicking air pressure to a respiratory obstructive/sleep apnea patient using analogously a CPAP machine. While normally CPAP machines treat obstructive respiratory conditions, such as sleep apnea, at a temperature of between 60 and 95 F., depending upon patient comfort. They generally are built to shut off at a 95 F. threshold.

(33) Hence, for the treatment of COVID-19 disease caused by the SARS CoV-2 virus, the temperature should be a minimum of about 130 F., as evidenced in the Chan and WHO in vitro tests results, op cit, listed herein.

(34) This elevated heat treatment which can vary in time from about a minimum of 15 minutes, up to 24 hours, as per medical instructions, is believed to have a synergistic effect on inactivation of the SARS CoV-2 virus, and hopefully a reduction in COVID-19 disease within the respiratory systems of the patient.

(35) It is believed that humans can withstand breathing in sauna units, which are typically warmed to 176-230 F., therefore exposure of a COVID-19 or other patient to temperatures at or below sauna temperatures, but of about at least 130 F., can be medically acceptable.

(36) FIG. 2 shows a rear view of the heat gun of FIG. 1, taken at arrow 2 of FIG. 1, showing a control panel 41 with display 46 and control knobs 44. For use in provided heated air through a heat resistant flexible hose to a CPAP type face mask 10 covering the nose and mouth of the person, the temperature of the heated air from the heat gun 30, such as, for example, the Master Pro Heat gun model 1400, can also be set at a human tolerable upper limit, such as for example 200F or even 275 F., if medically appropriate, at air flow volumes of as little as 4 CFM (cubic feet per minute).

(37) The rear of the heat gun handle 35 has ergonomic temperature and airflow controls, such as a pair of turnable knobs 45a and 45b, where one knob 45a is twisted and turned to adjust the airflow up or down to predetermined human tolerable levels, which are displayed in an LCD screen 46 above or adjacent to the knobs 45a and 45b. To adjust the temperature of the emitted air, the other knob 45b is twisted and turned to raise or lower the designated heat of the air flow output. A set temperature is displayed on the LCD screen 46 for several seconds, until the actual output air temperature is displayed on the LCD screen 46.

(38) As also shown in FIG. 2, a further safety feature in the Master Pro Heat gun model 1400 is that adjacent to the two knobs 45a, 45b there is provided a locking lever or key 44c, typically, but not necessarily, magnetic, that is pushed or moved to set and lock the output air temperature and pressure. The settings inputted by the two knobs 45a, 45b cannot be changed if the LCD screen 46 indicates a Lock icon, due to the manipulation of the locking lever or key 44c. The locking lever or key 44c can alternatively be used for converting the temperature from Fahrenheit units to Celsius.

(39) FIG. 3 shows a rear view of the heat gun 130 of FIG. 1A, taken at arrow 3 of FIG. 1A, showing a control panel 141 with display 146 and heat gun 130, such as the Master heat gun model 1500, also operates at 120/230 V AC, outgoing air temperatures can be as low as 130 F., extending up to 1000 F. The Master heat gun model 1500 also has a finger-operable ON/OFF switch on a trigger position of the handle, which has three setting depending upon selected movement of the switch. In a HEAT position, the top of the switch is depressed inward. To achieve a COOL position, the switch is set so that the top and bottom portions are equally extended. To turn the switch off, the bottom of the switch is completely pushed inward.

(40) For use in provided heated air through a heat resistant flexible hose to a CPAP type face mask 110 covering the nose and mouth of the person, the Master Pro Heat gun model 1500 can also be set at a human tolerable upper limit, such as for example 200 F. or even 300 F., if medically appropriate, at air flow volumes of as little as 4 CFM (cubic feet per minute). The rear of the Model 1500 heat gun handle also has an LCD screen 146, but adjacent to, or below, the LCD screen 146 there is provided an array of programmable settings with keypad up/down arrow keys 144a, 144b, etc., where the one set of up and down arrow keys 144a, 144b are manipulated to adjust air pressure and another set of right up and down arrow keys 146a, 146b are manipulated to adjust the temperature up or down, to predetermined human tolerable levels, which are displayed in the LCD screen 146 above or adjacent to the key pad. In the middle between the left and right-side arrow keys are two other keys 144P, where the upper key has a P inscribed thereon, for programming the desired inputted air pressure and temperature outputs. The lower middle key 144 F/C is used to change the output levels from Fahrenheit to Celsius, or vice versa.

(41) A further safety feature in the Master Pro Heat gun model 1500 is the programmable keys 144a, 144b, 146a, 146b, etc., can be used to set and lock the output air temperature and pressure. The settings inputted by the two knobs 44a, 44b of FIG. 1 or programmable keys 144a, 144b, 146a, 146b of FIG. 1A cannot be changed if locked by the key lock or by the programmable keys.

(42) FIG. 3A is block diagram schematic of either of the heat guns of FIGS. 1 and 1A for providing respiratory therapy for COVID-19 patients, where breathing heated air at higher temperatures for longer periods is called for. An available heat source that is AC mains powered such as for example heat guns made by Master Pro Heat models 1400 and 1500 may be used. FIG. 3A is a high-level schematic that can describe both Master heat gun models 1400 and 1500 with adjustable airflow and temperature. These are microprocessor-controlled heat guns which sense airflow by monitoring blower motor rotational speed and use temperature feedback from reading the airflow temperature.

(43) In FIG. 3A heat gun 30 of FIG. 1 uses microprocessor 132 to drive motor 134 through motor driver 136; it also drives heating elements 138 through driver 142. Electronic temperature sensor 124 reads effluent air temperature. Processor 132 also services the display 46 and the control panel 41 which serve as the person interface to set up operations. The same schematic applies to heat gun 130 of FIG. 1A.

(44) Other safety features are in the Pro Heat model 1400, which is similar to heat gun 30 of FIG. 1. It uses a knob 45 on a potentiometer to set temperature as well as another knob 45 to set airflow velocity. A separate magnetic key 44c is inserted in either the airflow or the temperature keyhole to lock the values selected.

(45) The Pro Heat model 1500 is programmable; besides the modes of the model 1400, it can store 5 different pairs of airflow/temperature settings and can lock or unlock each of them without the use of a key, such as magnetic key 44c of FIG. 2A.

(46) FIG. 4 shows a child patient in bed, with a heat gun 30 suspended on a rack 459 on a movable hospital cart 450, providing safe and needed heated temperature air, at an acceptably tolerable inhalation air pressure, through a flexible heat resistant conduit tube 20, to a heat mask 10 covering the nose and mouth of the child patient. While the present invention can accommodate patients afflicted with COVID-19 lung disease, other respiratory diseases could also be treated, such as, for example, childhood cystic fibrosis. The bedridden child in the hospitalization setting is shown using the CPAP-type mask 10 attached by the flexible tube 20, wherein the heat gun 30 is capable of providing heated air in inhalation at predetermined high levels of heated air, in a humidified environment, for treatment of the upper respiratory system. and to promote an immunostimulatory response in the child or adult wearer.

(47) In a hospital setting, as shown in FIG. 5, a hospital cart 350 is shown, having an optional gasoline generator (Honda, EB22001TA) 352, tube 353 to a manifold 354, wherein the manifold 354 provides heated air at an appropriate air pressure to a plurality of face masks 10, such as, for example, four or more face masks 10, although up to ten or more face masks 10 can be accommodated by the manifold 354. The heat gun 30 can be installed on a rack 351 on the hospital cart 350, with an AC wall outlet or, optionally, to a Honda or other electrical generator 352 on the cart 350 for full ambulatory use (when in ventilated conditions to eliminate carbon monoxide), which lasts over eight hours at power. Generator 352 can last over three hours at full power, and by dividing the pressurized heated air from the manifold 354, can treat at least ten people with one heat gun 30. For example, the conversion of cubic feet per minute airflow (CFM) to liters per minute is 28.32; thus, a heat gun 30 sending heated pressurized air at 120 F. heat at 3.5 CFM, times the factor of 28.32=99.12 liters per minute. Since a human takes 5-8 liters at rest, therefore the present invention can bleed off 99.12 minus 8=91.12 liters per minute, for treating about ten persons people simultaneously.

(48) In general, since the device is a medical device, optimally the heat guns have air temperature and air pressure controls, such as thermostats for temperature control, with automatic shutoff features and interlock. For example, the Master Pro Heat gun has a minimal air flow of cubic feet per minute (CFM) of 4 and a safety interlock built-in for temperature and air flow stopping. Converted to liters=0.28 Liters per minute, this is below the air flow of a human at rest with normal activities, which is about 5-8 liters per minute.

(49) For example, while the heat guns may have finger operable keys for controlling air temperature and air pressure, optionally these person operable controls and shutoffs may have a fail-safe automatic shutoff and interlock preventing any heat output above a threshold maximum and preventing any air pressure above a threshold maximum, such as tolerated in a CPAP machine, to prevent accidental increases of temperatures and air pressures above what is tolerable in human respiration.

(50) Therefore, as shown in the optional embodiment of FIGS. 6, 6A and 6B, since a heat gun is a powerful device which can deliver powerful airflow and temperatures up to 1000 F., it may be desirable in certain environments to optionally use a small safety plug-in interlock adapter 650, to separately monitor the temperature and pressure of the heated air delivered to a patient, and to shut down the system in case the built-in safety controls of the heat gun inadvertently fail due to human error or machine malfunction, whenever either the pressure or temperature in the patient hose exceed safety limits. A separate section of flexible tubing 20 or 120 is connected at one end to the collar adapter 650, and another section of the flexible tubing 20 or 120 is connected to the other end. The heated air flows through an internal tubing 651 of collar adapter 650, contacting thermal protection sensor switch 664 and air flow pressure sensor switch 666, sense any excessive temperature or air pressure in the heated air flow, due to human error or machine malfunctioning.

(51) In general, in case of shut down, manual intervention (physically pressing the start button) is often required. Since the safety plug-in collar adapter 650 is plugged into the wall and the heat gun is plugged into the adapter, the heat gun need not be modified, but an extra degree of safety would be gained by having the line cord and plug of the heat gun fit into a mating outlet of the collar adapter to fit the keyed plug of the heat gun therein.

(52) Such a simple interlock collar adapter 650 that is plugged into an AC outlet between the AC outlet and the AC compatible plug of the heat gun includes an AC relay, with normally open single pole contacts. An AC coil and related contacts make up a simple relay, which has separate ON and OFF momentary switches. One switch has normally open contacts and the other switch is in the relay latching circuit and it has normally closed contacts. The thermal sensor switch 664 with normally closed contacts is selected from a factory list of available temperatures. The maximum temperature selected must be above the range of operating temperatures. The normally closed pressure sensing switch 666 interfaces with the airflow to sense a pressure beyond operating region that is close to being a safety hazard. A fuse can complete the circuit. As also shown in FIGS. 6A and 6B, the optional safety plug-in interlock adapter 650 is a simple electromechanical design that is easy to understand and use. The principal component is optionally an AC relay 652 with normally open single pole contacts. AC coil 654 and contacts 656 comprise relay 652. It has separate ON 660 and OFF 662 momentary switches. Switch 660 has normally open contacts. Switch 662 is in the relay latching circuit and it has normally closed contacts. Switch 664 is a Thermal Protect sensor switch with normally closed contacts selected from a factory list of available temperatures. The temperature selected must be above the range of operating temperatures; perhaps 230 F. may be appropriate as a cut-off threshold air temperature. Switch 666 is a normally closed pressure sensing switch which is introduced into the airflow to sense a pressure beyond operating region that is close to being a safety hazard. Since a sensor switch at such low pressure may be difficult to purchase at a reasonable price one can be fabricated using a diaphragm or bellows and a snap action switch, high precision is not required. Indicator 668 and fuse 676 complete the circuit.

(53) AC plug 674 of collar adapter 650 will fit the usual 120 VAC wall outlet. Plug-in outlet 670 mounted on adapter 650 is optionally keyed to prevent normal appliance plugs from mating. Keyed plug 672, connected to the heat gun 30 or 130, is designed to fit outlet 670.

(54) The aforementioned optional simple plug-in interlock collar adapter 650 is a fail-safe shutoff to completely shut the heat gun down, if the heat gun itself has a malfunction in its operation or use.

(55) As shown in FIG. 7, in a further alternate embodiment, an ambulatory person is shown using a cordless, portable, high temperature therapeutic heat gun heat 530, while preparing to don a CPAP-type mask 10, such as depicted in FIG. 1, attached by a flexible tube 20 having ball valves 48, 49 shown in FIG. 1, connected to the heat gun 530, which can be held by a belt 531a supported rack or holster 531. The cordless heat gun 530 is capable of providing heated air in inhalation at predetermined levels, at a reasonably low air pressure mimicking air pressure from a conventional CPAP machine in a humidified environment, to maintain the upper respiratory system infected by a resistant virus, such as, for example, the SARS-CoV-2 virus, at a further predetermined level, to deactivate the resistant virus and promote an immunostimulatory response in the wearer. In one therapy for ambulatory COVID-19 patients, breathing heated air for a relatively short period of time (such as 15 minutes at 130 F.) is helpful.

(56) FIG. 7 shows the purpose-built heat source 530 attached to patient mask 10 by a flexible tube 20. Compartment 532 of heat gun 530 houses a rechargeable battery 534, preferably lithium iodide. FIG. 7A is a schematic diagram for the portable, cordless heat gun embodiment of FIG. 7, showing battery 534, on/off switch 512, blower motor 514, and heating elements 518. These components are selected to inherently provide the desired mask pressure and temperature. Fuse 520 protects against over-current faults such as a short circuit. Because the design is limited by low voltage battery power (below hazard voltage) and a motor designed to blow about 8CMH20 pressure at 130 F, the heat source is intrinsically safe.

(57) In the portable battery powered heat gun of FIG. 7, the wearer's belt accommodates heat gun 530 with low voltage (i.e., 12V or equivalent) battery 534, to provide electrical power to the heat gun 530 and its components, which are held within a belt holster or rack 531 on the wearer's belt 531a.

(58) Preferably, in conclusion, as noted in drawing FIGS. 1-7A, in the therapeutic heat gun and face mask apparatus, the aforementioned heat source of the heat gun 30 or 130 has temperature and air pressure controls capable of maintaining the heated air above a minimal effective amount to inactivate a pathogen, such as the SARS Cov-2 virus, and below a second predetermined upper limit threshold temperature and air pressure for safe inhalation.

(59) Besides treating SARS-CoV-2 induced COVID-19 disease, there is also provided a method of treating selected pathogens and lung diseases, selected from the group consisting of bacteria, viruses, fungi, asthma, mesothelioma, lung cancer, chronic obstructive pulmonary disease (COPD), emphysema, chronic bronchitis, pulmonary fibrosis, cystic fibrosis, pneumonia, heart disease and other cancers.

(60) Preferably, the face mask heats air to a sufficiently high temperature is between about at least 80 F. and about 275 F., optionally, which said sufficiently high temperature is at least 132.8 F. at a relative humidity of from about 90% to about 95% relative humidity.

(61) In order to keep the pressure of the heated air at a tolerable level compatible with human respiration, the air pressure of the heated air is compatible with typical air pressure flows in a Continuous Positive Air Pressure (CPAP) machine. Most CPAP machines pump air in the range from 6 to 15 cm/H20 (centimeters of water pressure), such as, for example, an air flow is set at 8 cm/H2O.

(62) In the present invention, the heat gun 30, 130 or 530 must have the capability of providing heated air in the range of 80 F. to 275 F., preferably at sauna heat temperature levels of about 150 to 200 F. up to about 230 F., and at air pressure levels of no more than about 5.4 psi for human respiratory tolerance. While any heat gun which is capable of the aforementioned temperature and air pressure range limitations, non-limiting examples of such heat guns include the Master Pro Heat Gun models 1400 and 1500.

(63) Besides being used for treatment of COVID-19 disease, heating the air passing through the heat chambers of the face masks disclosed in FIGS. 1-7A, can be done to raise the air temperature to a temperature and relative high humidity sufficiently high to destroy other selected pathogens within the respiratory system of the person. These include other selected pathogens and lung diseases which are selected from the group including bacteria, viruses, fungi, asthma, mesothelioma, lung cancer, dysplasia, chronic obstructive pulmonary disease (COPD), emphysema, chronic bronchitis, pulmonary fibrosis, cystic fibrosis, pneumonia, cancer in general, and heart disease, these alternate treatment regimens further preferably and optionally include the step of controlling the temperature, relative high humidity and elapsed time of the air being heated in the heat chamber by one of either a control box or an app on a smart phone, and providing a microprocessor for handling all communications and readings of a digital thermometer in the face mask.

(64) It is further noted that the combination of providing heated pressurized air from heat guns through flexible tubing to face masks of FIGS. 1-7 can also be optionally used in a treatment method, stand alone, by itself, for cancers of the respiratory system, of augmenting cytotoxic chemotherapy, radiation, or immunotherapy for cancers of the lung, upper and lower respiratory tract and other body parts of a person, whereby heating the air passes through the aforementioned heat chambers to a temperature and relative high humidity sufficiently high to augment the cytotoxic chemotherapy or the immunotherapy and causes an immunological upregulation at the sites of the person being treated with the immunotherapy. These alternate treatment regimens also further preferably and optionally include the step of controlling the temperature, relative high humidity and elapsed time of the air being heated in the heat chamber by one of either a control box or an app on a smart phone, and providing a microprocessor for handling all communications and readings of a digital thermometer in the face mask.

(65) Moreover, treatment of in situ cancers with isolated limb perfusion, is administered with a very high dose of chemotherapy, at elevated temperature, to isolated tumor sites without causing overwhelming systemic damage.

(66) Also, heat can be combined with chemotherapy or radiation therapy to reduce or destroy cancer tumor cells, in combination with chemotherapy and/or radiation to destroy cancer cells and to enhance the anti-tumor effects of chemotherapy and/or radiation.

(67) Likewise, Applicant's invention of delivering heated air through the mouth and nose of a cancer patient, can be used in combination with isolated limb perfusion cancer treatment and hyperthermia cancer treatment in general, because Applicant isolates his treatment to the respiratory tract, which is the primary site of COVID-19 disease and infection by the causative virus, (SARS-CoV-2), and administers a high dose of heated humidified air without causing overwhelming systemic damage.

(68) In the foregoing description, certain terms and visual depictions are used to illustrate the preferred embodiment. However, no unnecessary limitations are to be construed by the terms used or illustrations depicted, beyond what is shown in the prior art, since the terms and illustrations are exemplary only, and are not meant to limit the scope of the present invention.

(69) It is further known that other modifications may be made to the present invention, without departing the scope of the invention, as noted in the appended Claims.