This invention relates generally to bathing devices for hygienic purposes, and, more particularly, to a handheld personal perineal cleansing hygiene system attachable to existing bathroom plumbing lines or fixtures.
A person that is handicapped, elderly, or otherwise has limited mobility may not be able to efficiently clean the perineal area, which is necessary for personal hygiene and comfort, as well as to prevent adverse skin conditions. For example, a person with limited mobility, such as a person with a severe back injury, may not be able to reach the anal area for removing feces after a bowel movement. It would be advantageous for the person with limited mobility to be able to stand upright or sit on the toilet while cleaning the perineal area, but the available cleaning devices have limitations and do not fully meet the needs of a person with limited mobility.
For example, handheld shower wands may be used to attempt to wash the perineal area, but the spray wand often has a spray that is too strong for the delicate skin of the perineal area, is typically too short, is hard to manipulate to direct the water delivery angle, and is angled incorrectly for directing the spray onto the perineal area. Additionally, washing feces onto the bottom surface of the shower or tub may not only be distasteful and unsanitary, but the person with limited mobility is not likely to be able to reach to the bottom surface of the shower or tub to clean and remove any residual waste.
Some perineal cleansing systems are designed for hospital use by a caregiver but are too complex and expensive for personal use. Some perineal cleansing systems, such as bidets, require major plumbing alternations to the bathroom in which it will be installed, necessitate that enough floor space be available for the bidet, and involve additional construction work.
Accordingly, a handheld personal perineal cleansing device is needed that is specifically designed to clean the delicate skin of the perineal area; that, when used in a shower or bathtub, prevents feces from being deposited on the floor of the shower or bathtub; that does not require major plumbing alternations during installation; that does not use additional floor space; and that does not involve any construction work to install.
The present invention is directed to a handheld personal perineal cleansing hygiene system and methods of assembly and use that allows a person with limited mobility to efficiently clean the perineal area and that, when used in a shower or bathtub, prevents waste from accumulating on the shower floor or bathtub bottom surface. The handheld personal perineal cleansing system includes a water-ingress fitting (such as a tee fitting) for connecting to existing bathroom water piping, a flexible feeder supply line attached to the water-ingress fitting, a water-ingress valve to control the fluid flow into the water-ingress fitting and flexible supply line, an elongated spray arm attached to the distal end of the feeder supply line, at least one handle fixedly connected to the elongated spray arm, an accumulation basin, a spray head with a nozzle assembly disposed within the accumulation basin and connected to the distal end of the spray arm. In some embodiments, the handheld personal perineal cleansing system further includes a removal line attached to the accumulation basin and extending to a drain fitting, which may be disposed in the floor of a shower or a combination bathtub/shower or disposed at the entrance to the overflow drain of a combination bathtub/shower.
The handle allows the user to efficiently position the accumulation basin to allow the spray head nozzles to gently, but effectively, spray the delicate perineal area. When used in a shower or bathtub, any feces that may be washed away is collected in the accumulation basin that drains directly to the drain fitting to empty into the drain of the shower or bathtub, so no waste matter is deposited onto the shower floor. When used in a seated position on a toilet, the basin collects the sprayed water and waste and allows it to be hygienically deposited in the toilet.
The water input for the handheld personal perineal cleansing system comes from existing piping or fixtures in the bathroom. Thus, it is easily installed and does not require major plumbing changes or extensive modifications to a bathroom.
In contrast to a free-standing bidet, the handheld personal perineal cleansing system does not require any additional floor space be allocated to it.
In an aspect of the invention, the handheld personal perineal cleansing system includes a three-connection handle with connections to the spray arm at the top, middle and bottom of the handle.
In an additional aspect of the invention, the handheld personal perineal cleansing system includes a two-connection handle with connections to the spray arm only at the top and bottom of the handle.
In a further aspect of the invention, the handle of the handheld personal perineal cleansing system comprises a two-grip design that is easily grasped by two hands.
In another aspect of the invention, the handheld personal perineal cleansing system has an internal sprayer with nozzles directed upwardly for perineal cleansing and outwardly to rinse the interior of the sprayer.
In a further aspect of the invention, the handheld personal perineal cleansing system has an internal sprayer with nozzles directed upwardly only.
In an additional aspect of the invention, the handheld personal perineal cleansing system includes a sprayer with a single nozzle type.
In another aspect of the invention, the handheld personal perineal cleansing system includes a sprayer with multiple nozzle types.
In a further aspect of the invention, the handheld personal perineal cleansing system includes a handle interior reservoir, a handle input port that allows introduction of a fluid into the interior reservoir, and a handle shut-off valve that, when open, allows the fluid from the interior reservoir to enter the fluid flow passage of the spray arm.
In another aspect of the invention, the handheld personal perineal cleansing system includes a spray head with a separator shield.
In an additional aspect of the invention, the handheld personal perineal cleansing system includes a buttocks spreader system.
In a further aspect of the invention, the handheld personal perineal cleansing system includes a lid to cover the accumulation basin.
In another aspect of the invention, the handheld personal perineal cleansing system includes wall mounted holder that provides a location to store the cleaning system when not in use.
In an additional aspect of the invention, the handheld personal perineal cleansing system includes a two-part drain fitting having an interior portion connected to the removal line and an outer portion with holes allowing drainage of water into the plumbing drainpipe.
In a further aspect of the invention, the handheld personal perineal cleansing system is configured for installation in a shower.
In another aspect of the invention, the handheld personal perineal cleansing system is configured for installation in a combination shower/bathtub using the overflow drain.
In an additional aspect of the invention, the handheld personal perineal cleansing system is configured for installation in a combination shower/bathtub using the floor drain.
In a further aspect of the invention, the handheld personal perineal cleansing system is configured for use while seated on a toilet.
In another aspect of the invention, the handheld personal cleansing system includes a specialized toilet riser to provide vertical height to accommodate the use of the handheld personal cleansing system.
The object of the invention is to provide a handheld personal perineal cleansing system which gives an improved performance over the above described prior art systems and methods.
These and other objects, features, and advantages of the present invention will become more readily apparent from the attached drawings and from the detailed description of the preferred embodiments which follow.
The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings, provided to illustrate and not to limit the invention, where like designations denote like elements.
Like reference numerals refer to like parts throughout the several views of the drawings.
Shown throughout the figures, the present invention is directed toward a handheld personal hygiene perineal cleansing system that allows a user to clean his/her perineal area while the system captures any waste and/or debris and residual water within a basin incorporated into the cleansing system. Water is introduced into the handheld personal hygiene perineal cleansing system by adding a fitting to a fixture or waterpipe of the bathroom, so it is easy to install and requires no modifications to the installed plumbing.
The personal hygiene perineal cleansing system may be installed for use in a shower, bathtub, combination shower/bathtub, or toilet. In a first embodiment is it installed in a shower using the shower floor drainpipe for drainage (
In the embodiments in which the personal perineal cleansing system is installed in a shower or bathtub, the water intake may be a fitting introduced between the existing shower pipe water supply and the existing plumbing drainpipes. In the embodiment in which the personal perineal cleansing system is installed for use when seated on a toilet, the water intake may be a fitting positioned within the toilet waterlines, within waterlines supplying a sink, or within the existing shower pipe water supply.
Referring now to
One or multiples ones of the water-ingress fitting 110, flexible feeder supply line 120, spray arm 130, and handle 133 may include a plumbing valve. The water-ingress fitting no preferably comprises a tee fitting that includes a water-ingress valve 115 that can be shut to prevent fluid from flowing to the showerhead 105 and to thereby allow the water to enter the handheld personal hygiene perineal cleansing system 100. The feeder supply line 120 or the spray arm 130 preferably include a valve 132 to shut off or turn on the fluid flowing from the water-ingress fitting no to the sprayer 160. The handle 133 may optionally have a handle valve 137 to allow secondary fluid that has been introduced into a handle interior reservoir via the handle fill port 135 to flow into the main fluid flow passage of the spray arm 130. These plumbing valves 115, 132, 137 comprise shut-off valves (also known as stop valves or isolating valves), which include gate valves, globe valves, ball valves, or other similar shut-off type valves, but a ball valve type shut-off valve is preferred. The valves may include configurations such as two-port, 3-port, two-stop/one manifold, and the like. In an aspect, the valve 115 may be a two-stop valve on one manifold configuration, and the second shut-off valve 132 would not be necessary. In yet a further aspect, the valve 115 may be a 3-port valve in which the fluid flow from the ingress port 112 may be switched to the first outlet 119 or to the second outlet 118, which also eliminates the need for the second shut-off valve 132.
In a conventional bathroom, a shower or a shower/bath combination has an existing showerhead 105 configured with showerhead nozzles that provide a spray of water into the shower surround or the shower/bath combo surround. Additionally, the existing showerhead 105 has an internal water flow passage and is configured to be attached to, and receive a fluid flow from, the building's fluid flow pipe 111, which in turn has an internal water flow passage and is configured to be attached to and receive a fluid flow typically from a municipal pressurized water supply.
In the first embodiment, the water-ingress fitting 110 of the handheld personal hygiene perineal cleansing system 100 is interposed between the existing fluid flow pipe 111 (
The flexible feeder supply line 120 comprises at least one internal fluid flow passage, a feeder supply line inlet 121, a flexible tubing 124, and a feeder supply line outlet 128. The flexible tubing 124 comprises a water supply line suitable for hot and cold water that extends from the feeder supply line inlet 121 to the feeder supply line outlet 128. Preferably the flexible tubing comprises a bendable braided line. Braided line types include braided nylon flex tubes made from reinforced braided nylon with a solid polyvinyl chloride (PVC) inner core, stainless steel flex tubes made of braided stainless steel surrounding an inner tube of PVC or nylon, PVC flex tubes made of a PVC outer core that is usually braided with nylon and an inner core made of solid PVC, polymer-coated flex tubes with outer polymer-coated fibers and an inner PVC core, and the like.
The feeder supply line outlet 128 is configured to connect to, and to convey a fluid flow to, the spray arm 130. The feeder supply line outlet 128 and the spray arm inlet 131 have mating connectors, similar to the feeder supply line inlet 121 and the second tee outlet 118 mating connectors, as described above.
The elongated spray arm 130 comprises at least one internal fluid flow passage, a spray arm inlet 131, a spray arm outlet 138, an elongated casing body 139, an at least one handle 133, and, optionally, a spray arm shut-off valve 132. The spray arm inlet 131 is configured for connecting to the feeder supply line outlet 128 via mating connectors and for receiving a fluid flow from the feeder supply line outlet 128. The elongated casing body 139 is rigid and non-flexible. It comprises an upper generally straight portion that carries the handle 133 and a lower curved or arc-shaped portion 134 (
The handle 133 of the spray arm 130 allows the user to position the accumulation basin 150 for maximum comfort and collection and to direct the fluid spray from the spray head 169 for maximal cleansing. In the aspect shown in
In one aspect of the invention, the handle 133 includes an internal fluid storage passageway and/or reservoir, a fill port 135 preferably covered with a cap, and a fluid exit port. The handle's internal fluid storage reservoir is an interior cavity within the handle into which a secondary fluid is introduced through the handle fill port 135 and out of which the secondary fluid exits through a handle exit port. The fluid flow from the handle exit port is manually controlled by a handle shut-off valve 137 that retains the secondary fluid introduced into the fill port 135 in the storage reservoir or allows the secondary fluid in the storage passageway to flow into the lower portion of the spray arm 130. The fill port 135 allows the introduction of cleaners or disinfectants into the internal fluid storage passageway/reservoir for cleaning the accumulation basin 150, the sprayer 160, and the removal line 140. In another aspect medicaments, treatments, balms, and oils can be introduced into the fluid being sprayed onto the perineal area by the sprayer 160 via use of the fill port 135 and manual opening of the valve 137. Thus, the secondary fluid may comprise cleaners or health and beauty aids.
In another aspect of the invention, a safety lever 102 (
The sprayer 160 is disposed within the accumulation basin 150. The sprayer 160 comprises at least one internal fluid flow passage, an inlet port 161, and a spray head 169 having a nozzle matrix or assembly 168. The sprayer 16o is configured for receiving fluid flow from, the spray arm 130. The sprayer 160 may be directly connected to the spray arm outlet 138 via mating connectors or otherwise connected to receive the fluid flow. In the preferred aspect, the basin 150 includes a tubing extension 142 (
The spray head 169 comprises the nozzle assembly 168, which is configured to spray a fluid flow that sprays onto and washes the perineal area. The residual fluid, carrying any dirt, bacteria, or feces that has been washed away from the perineal area, is accumulated in the accumulation basin 150. This residual fluid is received by the accumulation basin 150, flows through the basin outlet drain 158 and into the inlet 141 of the removal line 140 and on to the drain fitting 170.
In a preferred aspect of the invention, the nozzle assembly 168 of the spray head 169 comprises multiple nozzles 168A (
In one aspect of the invention, the spray head 169 may also optionally comprise a divider shield 167 (
The spray head 169 may be elongated as seen in
The accumulation basin 150 is a round or oblong concave bowl-shaped vessel that is sized and configured to accommodate the sprayer 160 disposed internally of the basin 150. Preferably, the basin 150 is an oblong, concave, one-piece molded plastic container. The accumulation basin 150 comprises an inner surface, an outer surface, a rim 155 encircling the upper edge, and two openings, an input opening 151 and a basin outlet 158 (
The inner surface of the basin 150 is smooth to facilitate removal of the residual fluid and for cleaning. Particularly in the aspect in which the input opening is at the bottom of the basin, the inner surface of the basin 150 near the input opening 151 may have a raised portion 146 (
In some aspects of the invention, the accumulation basin 150 may comprise a lid 154 that is sized and configured to fit onto or over the rim 155. In one aspect, the lid 154 is a separate element that may be snapped onto the rim. In another aspect, the lid 154 is hingedly attached to the accumulation basin 150, as seen in
In one aspect, the accumulation basin 150 is connected (either directly connected or connected via a portion of the sprayer 160) to the spray arm 130. This aspect facilitates easy removal of the basin 150 from the spray arm 130 for cleaning or replacement with a separate basin 150, such as may provide advantages when two members of the same household use a single personal perineal cleansing system. In another aspect, the accumulation basin 150 may be integrally formed with the spray arm 130 forming a one-piece spray arm and basin combination element. This aspect has less connections, and, thus, may provide a more robust solution.
For comfort, in one aspect of the invention, the rim 155 of the basin 150 is covered with closed cell foam, rubber or rubber-like material, memory foam, memory foam covered in a pliant encasement for easy cleaning, or other soft material 107 (
The flexible removal supply line 140 comprises at least one internal fluid flow passage, a removal line inlet 141 configured for connecting to (via mating connectors) and receiving a fluid flow from the basin outlet 158, a flexible line 144, and a removal line outlet 148. The flexible line 144 is preferably a braided water line as described above having a diameter as large as or larger than the diameter of the feeder supply line 120. The removal supply line 140 extends from the basin outlet 158 to the drain inlet 171. The removal line outlet 148 connects to and conveys a fluid flow (the residual wash fluid and any waste) to a drain inlet 171 of the drain fitting 170 within the bottom of the shower or the bathtub or within the overflow drain of the shower/bathtub combination.
The drain fitting 170 comprises at least one internal fluid flow passage, comprises the drain inlet 171 configured for connecting to (via mating connectors) and receiving a fluid flow from the removal line outlet 148, and comprises an external cover 178. The external cover 178 supports the drain inlet 171. The external cover 178 includes one or more external drain holes providing access to the internal fluid flow passage. In the aspect in which the drain fitting is installed within the floor of the shower or bathtub, multiple external drain holes are provided. The external drain holes allow the shower spray water or bath water to drain into the internal fluid flow passage of the drain pipes, while the drain inlet 171 receives the residual water collected by the accumulation basin 150 (and transported by the removal line outlet 148) and directs the residual water through the external cover 178 to drain into existing plumbing drain pipes.
For convenience of attaching, using, and disconnecting all or parts of the handheld personal perineal cleansing system 100, preferably one or more or all of the mating inlet/outlet combinations are quick release connectors. For example, if the feeder supply line inlet 121 and the second tee outlet 118 comprise a first mating quick release connector and if the drain inlet 171 and the removal line outlet 148 comprise a second mating quick release connector, the elements of the handheld personal perineal cleansing system 100 between the water-ingress fitting no and the drain fitting 170 may be removed by merely activating the first and second quick release connectors. In another aspect, the sprayer 160 and the spray arm outlet 138 comprise mating parts of a quick release connector, which allows the sprayer 160 to be removed for easy cleaning of the sprayer 160 elements and of the interior of the accumulation basin 150.
In the embodiment shown in
In one aspect, a projection or raised portion 146 extends above the bottom of the basin with the basin quick release connector 144 disposed within the raised portion 146. This functions to prevent waste from inadvertently being introduced into the spray arm system 130.
In
In an exemplary installation, the handheld personal hygiene perineal cleansing system 100 of the present invention may be installed by first removing the existing showerhead 105 from the building's fluid flow pipe 111, typically by unscrewing the showerhead 105. Teflon tape is preferably placed on the threads of the ingress port 112 and the first tee outlet 119. The ingress port 112 is screwed onto the existing fluid flow pipe 111, and the showerhead 105 is screwed onto the first tee outlet 119. In the aspect in which a quick release connection is installed at the junction of the second tee outlet 118 and the feeder supply line inlet 121, the feeder supply line inlet 121 is attached via the quick release connection to the second tee outlet 118. Preferably, when purchased, the spray arm 130 is pre-connected to the feeder supply line 120, the accumulation basin 150 and sprayer 160 are pre-connected to the spray arm 130, and the removal line 140 is pre-connected to the basin outlet drain 158. If these connections are not pre-connected, these elements are connected during installation.
The existing drain cover is then removed and the inventive drain fitting 170 is installed with a drain inlet 171 quick release connector preferably disposed in the center of the external drain cover 178. The quick release connector of the removal line outlet 148 is then connected to the quick release connector of the drain inlet 171 to complete the assembly. Optionally, a wall hook may be installed for hanging at least a portion of the handheld personal hygiene perineal cleansing system 100 on a wall for storage.
In the shower installation embodiments, to use the handheld personal hygiene perineal cleansing system 100 of the present invention the water-ingress valve 115 is turned to prevent the fluid from entering the showerhead 105 and to direct the fluid into the feeder supply line 120. The spray arm valve 132 is opened to allow the fluid to enter the spray arm inlet 131. The fluid travels through the water-ingress fitting 110, through the feeder supply line 120, through the spray arm 130 and out of the sprayer 160 disposed within the accumulation basin 150. The accumulation basin 150 collects the residual fluid carrying any unwanted debris (such as fecal material, dead skin cells, dirt, and other waste material), which flows into the removal line 140 by gravity and then flows on into the drain fitting 170 to enter the plumbing drain that leads to the sewer system.
An additional aspect of the invention, a buttocks spreader 180, is shown in
The buttocks spreader 180 attaches to the end of the spray arm 130. As seen in
The expandable and contractible basin 150 of the buttocks spreader 180, in contrast to the non-expandable accumulation basin 150 of the first embodiment, has convertible sides 185 having sufficient flexibility that they can be expanded from a narrower, relaxed state via actuation of a leg squeeze mechanism 181. The leg squeeze mechanism 181 includes two levers 186 that articulate at articulation point 183 via movement of the user's legs. When the bottom portions of the levers 186 are in the relaxed position and extend outwardly as in
In one aspect, the expandable and contractible basin 150 further comprises a flexible membrane 182 (
To use the buttocks spreader 180, the user connects the mating portions of any quick release connectors that have been disconnected, such as for storage. Then the user places the spreader accumulation basin 150 that is closed with the sides contracted between the buttocks with the leg squeeze mechanism 181 extending downwardly from the spreader basin 150 along the upper legs. The user squeezes his/her legs together, which activates the expandable side walls 185 of the spreader basin 150 to open to expose the sprayer 160. The user then initiates the fluid flow into the sprayer 160 via the spray arm valve 132 or the safety lever 102. As in the embodiment with the non-expandable basin, the spreader basin 150 collects the residual fluid and debris, which is directed into the removal line 140 and on into the drain via the drain fitting 170.
In an embodiment, shown in
Although some toilets 175 may already be configured in a manner that allows usage of the personal perineal cleansing system, most toilets 175 are likely to require installation of a riser 190 to allow usage. In one aspect, the riser 190 comprises a generally U-shaped seat 191 having a front opening 193 and a riser attachment mechanism to secure the riser 190 to the top of the toilet 175.
The riser attachment mechanism may be one or more mechanical attachments 198 or may be a securing portion 199 of the riser. For example, mechanical attachments may be bolts that attach the back of the riser using the conventional holes 177 disposed at the back of the toilet rim. Or in another example, mechanical attachments 198 may be clamps that extend from the bottom of the riser 190 to engage the top portion of the toilet bowl.
The securing portion 199 of the riser also functions to secure the riser 190 to the top of the toilet 175. For example, the riser securing portion 199 may be positioned at the bottom portion of the riser and may take the form of an insert that extends downwardly from the riser into the toilet bowl.
When installed onto a toilet, the generally U-shaped seat 191 of the riser extends along both sides and the back of the toilet rim. The U-shaped seat 191 provides an increased vertical dimension, as compared to the toilet without the riser to facilitate use of the personal perineal cleansing system. The riser seat 191 comprises a top surface, a bottom surface, and side walls 191 that extend vertically from the seat top surface to the seat bottom surface. The side walls 191 include both inner side walls disposed in the interior of the U-shape and outer side walls disposed on the exterior of the U-shape. Disposed at the front of the riser walls 191 (at the peak of the arms of the U-shape, which is forward on the toilet) are rounded riser front walls 195 that define a riser front opening 193. The riser front opening 193 is sized and configured to allow insertion of the personal perineal cleansing system into the front of the riser 190. The riser front walls 195 preferably form a rounded front portion of the U-shape of the seat 191 portion of the riser 190.
In one optional aspect, side handles 197 may be included with the riser 190, which are preferably attachable and detachable from the riser, as needed. The inclusion of an option with side handles 197 may provide advantages to some users with disabilities or limitations, such as for use after back surgery to allow the user to ease into, and out of, a sitting position.
In a second optional aspect, as seen in
This embodiment for use with a toilet 175, shares many similarities with the above-described embodiments. However, besides the difference in the usage of a riser 190, this embodiment differs in some aspects. The basin 150 may be designed with less vertical height to facilitate use. The angle of the curved portion 134 of the spray arm 130 may differ. And the basin 150 may be designed with a drain hole 149 instead of a removal supply line 140 and its accompanying components.
In this embodiment as in the embodiments above, the basin 150 is preferably oblong with rounded corners and with a smooth interior to facilitate cleaning. However, the basin 150 of this embodiment preferably has a reduced vertical height to facilitate insertion into the riser front opening 193. The basin 150 remains at least as tall as the sprayer 160, but the sprayer 160 may be inset lower into the bottom of the basin than in the earlier embodiments. Any of the types of sprayers 160 described above may be used.
Also, in contrast to the earlier embodiments, the basin 150 of this embodiment is not connected to a removal supply line 140, because the residual water and debris can drain directly into the toilet. In this case, the bottom of the basin 150 is configured with a drain hole 149. Drain hole 149 may merely be a hole cut into or molded into the bottom of the basin, may be a lined hole, may be a hole with an attached short tubular structure extending downwardly, or other opening providing access to the exterior of the basin.
The angle of the curved portion 134 of the spray arm 130 of this embodiment varies from the angle of the curved portion 134 of the spray arm 130 of the earlier embodiments, because the position of the user has changed from standing to sitting. Thus, in this embodiment, the angle of the curved portion 134 may be generally ninety-degrees. To use, the user grasps the handle 133 and pulls the basin holding the sprayer 160 toward the user.
In this embodiment of
In any of the embodiments, one or more gaskets (such as gasket 162 in
The handheld personal hygiene perineal cleansing system 100 may further include a hand plunger that attaches to or near the removal line outlet 148. The optional hand plunger is configured to allow a user with limited mobility to attach the removal line outlet 148 to the drain inlet 171 without bending over.
The cleansing system 100 of the present invention is specifically designed to efficiently clean the perineal area. It provides advantages to those with limited mobility, but also to all others who want to clean the perineal area. Use of the system not only cleanses the skin, it does so without the residual wastewater or any fecal residue touching the floor of the bathtub or shower. Further, no alternations to the household plumbing are required, no reconstruction of the bathroom is needed, and it does not require additional floor space to install, as would a bidet.
The invention illustratively disclosed herein suitably may be practiced in the absence of any element which is not specifically disclosed herein.
Since many modifications, variations, and changes in detail can be made to the described preferred embodiments of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.
This application is a continuation-in-part of U.S. patent application Ser. No. 16/237,644 filed on Dec. 31, 2018 and issuing on Jun. 23, 2020 as U.S. Pat. No. 10,689,836, which is incorporated herein in its entirety.
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Number | Date | Country | |
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Parent | 16237644 | Dec 2018 | US |
Child | 16908028 | US |