a prior art baby bottle for feeding children with a cleft lip and / or a cleft palate is shown in fig1 . as shown , a conventional baby &# 39 ; s bottle 2 includes an elongated container 4 having an open end with an external thread ( not shown ) formed thereon . a conventional cap 6 has an opening therein and an internal threaded portion and a nipple 8 extends therethrough as attached to the top of the bottle in a conventional manner . however , the nipple 8 includes a substantially solid thin shield of latex rubber or the like . the shield is designed and constructed to prevent the nipple from collapsing into a cleft palate . a nursing bottle 20 in accordance with the present invention includes an upper section 22 having an elongated bottle 24 , which is shaped like a conventional baby &# 39 ; s bottle and made of glass or suitable plastic material . like conventional bottles , the elongated bottles are preferably clear or translucent so that a caregiver can monitor the amount of nutrient being dispensed . the bottle 24 also includes an opening 25 in an upper portion thereof , and a threaded neck 26 surrounds the opening 25 . the threaded neck 26 is constructed and dimensioned to receive a threaded cap 28 with a nipple 30 extending through an opening in the cap 28 in a conventional manner . as in a conventional baby &# 39 ; s bottle , the nipple 30 includes a peripheral flange at a base thereof . this flange is compressed between a top of the cap 28 and top of the neck 26 . unlike a conventional baby &# 39 ; s bottle , the nursing device 20 includes an elongated tubular member 34 , which passes through the nipple from a forward opening for delivering liquid , such as milk or water , to an infant . the tubular member may be flexible , semi - flexible or relatively rigid and of a suitable plastic material and is connected to a small submersible rotary pump for delivering pre - selected amounts of liquid to an infant . a small rotatable submersible pump 36 , the output of which is connected to the tube 34 , is disposed in the bottom of the bottle 24 . the pump 36 is connected to a motor 38 through a magnetic coupling 40 ( shown schematically ). the motor 38 is disposed in a lower section 42 of the device . the lower section 42 includes a plastic housing 44 , which is attached to the bottom of the bottle 24 in any conventional manner . a programmable timer 46 of conventional design regulates the motor 38 in order to provide a selected volume of liquid to an infant and may be programmed to provide small amounts of liquid with intermittent pauses to provide a more natural feeding . a battery 48 is disposed in the lower section 42 for powering the motor 38 and includes means 50 for connecting the batteries to an external charger 52 , which is connected to a source of electricity in a conventional manner . the programmable timer 46 is shown schematically in fig3 and typically includes a microprocessor to control the programming , which is well within the ability of a person of ordinary skill in the art . the timer 46 is also of conventional design and regulates the volume of liquid pumped and the length of pauses between pumping for each feeding cycle . the volume of liquid may be adjusted by a knob 51 and the timing for a pause by a knob 53 . an led display 55 may also be provided as an indication of volume . for example , the height or amplitude may be shown on the display , or the pause may be indicated by ½ wavelength . a further embodiment of the invention , which is similar to the first embodiment , is illustrated in fig4 . the difference is that the nipple 30 shown in fig2 is replaced with a nipple 60 having a soft rubber shield 62 for covering the defect of the baby &# 39 ; s mouth to thereby prevent leakage of milk due to a cleft lip or cleft palate . in the embodiments of fig2 - 4 , the tube 34 can be integral with the opening in the feed regulating nipple 30 , or a can be a separate member detachably mounted thereto . the tube 34 facilitates delivery of the nutritious liquid in a controlled manner that will not tax an infant &# 39 ; s ability to provide the necessary suction and / or seal , especially infants suffering from cleft lip or cleft palate . this regulation of liquid delivery occurs because only a certain amount of liquid can pass through the tube for any given amount of pressure . unlike conventional nipples used in infant bottles , any suction or biting of the conventional nipple causes a relative torrent or large amount of liquid to be dispensed . this frequently leads to waste and soiling of the infant &# 39 ; s clothes and face due to the infant &# 39 ; s inability to swallow such quantities at once . the nipple 30 has a circular flange and a hollow liquid delivery protrusion extending from the flange , an orifice defined in the tip end of the protrusion , and the tube 34 extending from the orifice so that the only milk that can be dispensed through the orifice must pass through the tube 34 . in contrast to conventional nipples , the tube 34 regulates and controls the stream of milk through the orifice by forcing the liquid to be indirectly delivered through the tube 34 , rather than directly through the nipple opening or orifice in conventional nipples , and the quantity being delivered thereby is much smaller and manageable for consumption by infants . the liquid is pumped by the pump 36 described above . however , the nipple 30 can be used to deliver liquid via manual means , e . g ., squeezing the bottle or through the efforts of the feeding infant . in this instance , the length of the tube 34 can be shortened so that the intake opening of the tube 34 lies near the top of the bottle during use , since any infant bottle would normally be tilted up during use and the intake opening should be disposed near the bottom of the accumulated liquid inside the bottle at that angle . fig5 through 8 of the drawings illustrate two additional embodiments of the nursing device having a metered liquid dispensing device . the metered liquid dispensing device has a bottle attachment housing having the motor , pump , and controls enclosed in or mounted on the housing , which is removably threaded in place atop the bottle by means of the conventional externally threaded neck of the bottle . the primary difference between the two embodiments of fig5 - 8 is the location of the pump . one embodiment has the pump located within the housing , and the other embodiment has the pump located below the housing and extending into the upper volume of the bottle to which the housing is attached . fig6 provides a detailed side elevation view in section of an embodiment of a nursing device having a metered liquid dispensing device 110 that has all of the components of the dispensing device 110 contained within or mounted on a bottle attachment housing 112 . each of the various components within the housing 112 , which is illustrated schematically in fig6 , is conventionally available . the bottle attachment housing 112 has an internally threaded bottle attachment base 114 . a floor 116 extends across the housing 112 immediately above the threaded base 114 . the threaded base 114 is adapted for attachment to the externally threaded neck of a standard baby bottle , e . g ., the bottle b 1 of fig5 , 6 , and 8 , or alternatively , to the angled neck of the bottle 132 shown in fig7 . the bottles b 1 and b 2 , or other bottle having an externally threaded neck , may be formed of transparent or translucent glass or plastic material to enable the caregiver to check the contents of the bottle visually . the opposite upper end of the housing 112 has an externally threaded nipple attachment top 118 having a cover 120 spanning the upper end of the top 118 at the upper limit of the threads . the externally threaded nipple attachment top 118 of the housing 112 is of the same diameter and thread pitch as a conventional baby bottle , e . g ., the bottle b 1 . thus , it is adapted to accept an internally threaded nipple collar or cap c conventionally used to capture the flange of the nipple n thereunder to secure it to the neck of the bottle b 1 . the bottle attachment housing 112 defines a substantially sealed interior volume 122 ( with the exception of two small passages for the feeding tube , and additional lateral passages for access to controls for the device ) for the containment of the operative components of the metering device 110 . the interior 122 of the housing 112 contains a liquid pump 124 that communicates with the interior volume v 1 of the bottle 131 by means of a liquid flow inlet passage 126 formed through the floor 116 of the housing 112 . the pump 124 is preferably a conventional peristaltic pump , i . e ., a continuous liquid delivery line or tube 128 is sealed at or through the inlet passage 126 and extends through the pump 124 and through a delivery line or tube outlet passage 130 through the cover 120 of the housing 112 to extend through the perforated tip or orifice of the nipple n . the pump 124 includes one or more rollers therein that travel along a portion of the flexible tube or line 128 disposed within the liquid pump 124 housing , progressively compressing the wall of the tube 128 to convey liquid therethrough . however , other types of pumps may be used in the metering device 110 , if desired . the liquid pump 124 is selectively driven by an electric motor 132 that receives its power from a power supply 134 , comprising a preferably rechargeable electrical storage cell or battery pack disposed within the housing 112 . a recharging port 136 may be provided through the wall of the housing 112 . a control system 138 communicates electrically with the motor 132 and / or power supply 134 to control the power delivered to the motor 132 by the power supply 134 , thereby controlling the speed , operating time , pause time , and / or other factors relating to the operation of the liquid pump 124 and its delivery of liquid from the bottle b 1 . input to the control system 138 is provided by one or more external control passages 140 disposed through the sidewall of the housing 112 . fig8 provides a perspective view of the metered liquid dispensing device 110 of fig6 , illustrating an exemplary configuration of its external controls and display . the natural sucking action of a normal infant results in a series of liquid pulses entering the mouth of the infant . the pause between pulses provides time for the infant to swallow . however , an infant with a cleft lip or palate is incapable of producing the suction required to draw the liquid from the bottle without assistance . accordingly , the present nursing device in its various embodiments provides a pump to deliver positive liquid flow from the nipple of the bottle in a series of intermittent pulses simulating the natural sucking reflex of an infant and giving the infant time to swallow after each pulse . the controls for the metering device 110 include a volume control 142 that allows the caregiver to adjust the rate of flow or volume of each pulse of liquid delivered , and a pause tinier control 144 to adjust the time between each pulse of liquid . a display 146 is provided to enable the caregiver to visually determine the magnitude of each pulse of liquid , the duration of the pulses , and the time interval between pulses . the controls 142 and 144 and the display 146 are conventional , such controls and display being well known in the art of microcomputerized pump controls . fig7 of the drawings provides a side elevation view in section of an alternative embodiment of the metered liquid dispensing device , designated as metering device 210 . the metering device 110 comprises a bottle attachment housing 212 having a configuration similar to the bottle attachment housing 112 illustrated in detail in fig6 , i . e ., having an internally threaded bottle attachment base 214 that has a floor 216 extending across the housing 212 immediately above the threaded base 214 adapted for attachment to the conventional externally threaded neck of a standard baby bottle , e . g ., the angled neck of the bottle b 2 shown in fig7 , or alternatively , to the straight neck of the bottle b 1 , illustrated in fig5 , 6 , and 8 . the opposite upper end of the bottle attachment housing 212 has an externally threaded nipple attachment top 218 having a cover 220 spanning the upper end of the top 218 at the upper limit of the threads . the externally threaded nipple attachment top 218 of the housing 212 is of the same diameter and thread pitch as a conventional baby bottle , e . g ., the bottle b 2 in order to accept a conventional internally threaded nipple attachment collar or cap c to capture the flange of the nipple thereunder and secure the nipple to the neck of the bottle b 2 . however , the embodiment illustrated in fig7 includes an inner nipple in having a nipple flange nf captured between the nipple attachment cap c ( or more precisely , beneath the overlying shield flange sf that is , in turn , captured beneath the cap c ) and the underlying nipple attachment top 218 ( and the outer portion of the cover 220 formed integrally with the top 218 ). the metering device 210 also includes an outer shield s over the inner nipple in . the shield s has a shield flange sf captured between the overlying nipple attachment cap c and the nipple attachment top 218 and cover 220 , or more precisely between the cap c and the underlying inner nipple flange if . the shield s serves to prevent the collapse of the relatively soft inner nipple n . the shield s also serves as a temporary reservoir where discreet amounts of liquid can accumulate for subsequent consumption by the infant . the shield s also has an orifice defined in its tip end for delivery of milk or other liquids from the baby bottle to the infant . the bottle attachment housing 212 defines a substantially sealed interior volume 222 ( with the exception of two small passages for the feeding tube , and additional lateral passages for access to controls for the device ) for the containment and mounting of the operative components of the device 210 . the metered liquid dispensing device 210 differs from the metering device 110 in that the liquid pump 224 is disposed external to the housing 212 and below the floor 216 , so that the pump 224 is within the interior volume v 2 of the bottle b 2 when the metering device 210 is installed thereon . the pump 224 is preferably a peristaltic pump , as described further above in the discussion of the metering device 110 of fig6 . a passage 226 is provided through the floor 216 of the housing 212 , and a liquid delivery line or tube 228 extends from the pump 224 through the passage 226 in the floor 216 , through the interior of the housing 212 and through the delivery line tube outlet passage 230 in the cover 220 of the housing 212 . the delivery line or tube 228 extends at least through the perforated tip of the inner nipple in , and terminates in the space between the inner nipple in and the outer shield s in the metering device 210 of fig7 . however , the delivery line 228 may be extended to the perforated tip of the shield s , if desired . the pump 224 is selectively driven by an electric motor 232 that is disposed within the interior volume 222 of the housing 212 , i . e ., on the opposite side of the floor 216 from the pump 224 . no passage for a driveshaft between the motor 232 and the pump 224 is provided , in order to minimize the number of passages and corresponding potential leaks through the floor 216 . rather , a magnetic drive 225 is provided between the motor 232 and the pump 224 . the drive utilizes a magnet with a rotating polarity driven by the motor 232 . a corresponding magnet or ferromagnetic component at the pump 224 is driven by the rotation of the drive magnet . such magnetic drives are conventional , and are well known in the field of small motor drive systems . the motor 232 receives its power from a power supply 234 , comprising a preferably rechargeable electrical storage cell or battery pack disposed within the housing 212 . a recharging port 236 may be provided through the wall of the housing 212 . a control system 238 communicates electrically with the motor 232 and / or power supply 234 to control the power delivered to the motor 232 by the power supply 234 , thereby controlling the speed , operating time , pause time , and / or other factors relating to the operation of the liquid pump 224 and its delivery of liquid from the bottle b 2 . input to the control system 238 is provided by one or more external control passages 240 disposed through the sidewall of the housing 212 , the external appearance of the control system of the metered liquid dispensing device 210 may be substantially similar to the control system illustrated in fig5 and 8 . it will be seen that many of the various components of the various embodiments illustrated in fig5 through 8 are interchangeable with one another , e . g ., the metered liquid dispensing device embodiment 110 may be installed upon either bottle type b 1 or b 2 , or other suitable bottle configuration as desired . moreover , the inner nipple in and shield s may be used in the nursing device of fig6 , if desired . the external appearance of the metered liquid dispensing device in the embodiments of fig5 through 8 is unobtrusive , thus enabling the caregiver of an infant requiring such a device to use the device without attracting undue attention . this provides much greater comfort and peace of mind to the caregiver , and further encourages the caregiver to enter social situations and expose the infant thereto without concern that the action of bottle feeding the infant will be seen as other than a normal or usual procedure . while the invention has been described in connection with its preferred embodiments , it should be recognized that changes and modifications may be made herein without departing from the scope of the appended claims .
a nursing device for feeding infants with a cleft lip and / or cleft palate includes a nipple body and a tube operatively attached at one end to a pump for pumping liquid and operatively attached at the other end to the nipple body . the tube passively regulates the amount of liquid being pumped , ensuring that the infant can feed with minimal mess from the infirmities of cleft lip and / or cleft palate . the nipple body includes an outer flange and a cap for sealing engagement with the top of a nursing bottle . a shield can be used to cover the nipple body , which serves to protect and form a temporary reservoir for the liquid dispensed through the nipple body .