US20230355864A1 - Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same - Google Patents
Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same Download PDFInfo
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- US20230355864A1 US20230355864A1 US18/352,824 US202318352824A US2023355864A1 US 20230355864 A1 US20230355864 A1 US 20230355864A1 US 202318352824 A US202318352824 A US 202318352824A US 2023355864 A1 US2023355864 A1 US 2023355864A1
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- flexible tubing
- eccentric bearing
- tube
- valve assembly
- selector valve
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- 239000012530 fluid Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title abstract description 9
- 230000000712 assembly Effects 0.000 title abstract description 5
- 238000000429 assembly Methods 0.000 title abstract description 5
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 15
- 235000015097 nutrients Nutrition 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 208000035943 Aphagia Diseases 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/1407—Infusion of two or more substances
- A61M5/1408—Infusion of two or more substances in parallel, e.g. manifolds, sequencing valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
- A61M39/286—Wedge clamps, e.g. roller clamps with inclined guides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14212—Pumping with an aspiration and an expulsion action
- A61M5/14228—Pumping with an aspiration and an expulsion action with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
- A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16877—Adjusting flow; Devices for setting a flow rate
- A61M5/16881—Regulating valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/0076—Feeding pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M2005/1401—Functional features
- A61M2005/1403—Flushing or purging
Definitions
- Embodiments of the present invention relate to feeding pump systems, and more particularly, to enteral feeding pump systems and valve assemblies for use with such systems.
- enteral feeding pump systems are used to supply fluid nutrition to patients who are unable to eat.
- the pumping system typically includes a pump and disposable tubing sets (see, e.g., FIG. 1 ).
- An enteral feeding pump may be designed to pump only liquid nutrient formula or nutrient formula and water, separately.
- any component directly in contact with liquid must be disposable.
- an enteral feeding pump system includes disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump.
- the enteral feeding pump including a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation.
- the tubing from the two fluid source containers passes through an adapter designed to install onto an eccentric, rotating bearing which selectively closes or opens a flow of fluid from either container into a patient, the eccentric bearing is actuated by a motor.
- an enteral feeding pump system in another aspect of the invention, includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section and an enteral feeding pump.
- the enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in the direction of rotation.
- the tubing from the two fluid source containers passes through a pinching mechanism for selectively closing or opening the flow of fluid from either container into the patient.
- the pinching mechanism is actuated by an inflatable bladder linked to a micro air pump.
- the pinching mechanism is actuated by an inflatable bellows linked to a micro air pump.
- an enteral feeding pump system in another aspect of the invention, includes a disposable fluid delivery set, an enteral feeding pump, the enteral feeding pump including rotor that engages a peristaltic tubing section of the disposable fluid delivery set, and a pinching mechanism for regulating the flow of nutrient formula or water out of the fluid delivery set.
- a flow selector valve assembly comprises a tube adapter having two input flexible tubing channels and one output tubing channel.
- the two input tubing channels are configured to receive two respective tubes connected to two fluid sources and the output tubing channel is configured to receive a feeding tube.
- the tube adapter is configured to position the flexible tubing channels in relation with a receiver, the receiver having a central shaft and an eccentric bearing extending from a digitally controlled motor.
- the eccentric bearing is moveable between a first position in which neither of the input flexible tubing channels nor the respective tubes therein is compressed, and a second position in which the eccentric bearing compresses one of the input flexible tubing channels and the tube therein to prevent flow therethrough.
- a flow selector valve assembly comprises a tube adapter having two input flexible tubing channels and one output tubing channel.
- the tube adapter is configured to position the flexible tubing channels in relation with a receiver which has a central shaft and an eccentric bearing.
- the eccentric bearing is moveable between a first position in which neither of the input flexible tubing channels is compressed, and a second position in which the eccentric bearing compresses one of the input flexible tubing channels therein to prevent flow therethrough.
- a method of controlling fluid flow in an enteral feeding pump system comprising the steps of: (a) providing a flow selector valve assembly including a disposable tube adapter having two input flexible tubing channels being configured to receive two respective tubes connected to two fluid sources, and an output tubing channel being configured to receive a feeding tube for providing fluids/nutrients to a patient, wherein the flow selector valve assembly is configured to select either one of the two fluid sources, or both simultaneously; (b) inserting the two respective tubes within the two input flexible tubing channels; (c) positioning the flexible tubing channels of the tube adapter in relation with a receiver, the receiver having an eccentric bearing extending from a digitally controlled motor in the enteral feeding pump system; (d) placing the eccentric bearing in a first position, wherein neither of the input flexible tubing channels nor the respective tubes therein is compressed, whereby loading and unloading of the disposable tube adapter of the tubing assembly is facilitated; and (e) moving the eccentric bearing to a second position in which the eccentric bearing compresses one of
- FIG. 1 is a front view of an exemplary enteral feeding pump system.
- FIG. 2 illustrates a first embodiment of an exemplary pinching mechanism.
- FIG. 3 illustrates a second embodiment of an exemplary pinching mechanism.
- FIG. 4 is a schematic illustration of an exemplary double pinch system.
- FIG. 5 is a front view of another exemplary enteral feeding pump system.
- FIG. 6 illustrates an embodiment of exemplary pinching mechanism components.
- FIG. 7 illustrates a third embodiment of an operating exemplary pinching mechanism.
- FIG. 8 illustrates an exemplary disposable tubing set with an adapter that enables selective pinching of formula or water tubes.
- FIG. 9 is an exploded view of a flow selector valve system according to the present invention.
- FIG. 10 a is a top perspective, partially-exploded view of the system of FIG. 9 ;
- FIG. 10 b is a plan view of the system of FIG. 9 in which both input flexible tubing channels/tubes of the system are open;
- FIG. 10 c is a plan view of the system of FIG. 9 in which one of the input flexible tubing channels/tubes of the system is pinched closed by the eccentric bearing.
- the term “approximately” or “about” in reference to a value or parameter are generally taken to include numbers that fall within a range of 5%, 10%, 15%, or 20% in either direction (greater than or less than) of the number unless otherwise stated or otherwise evident from the context (except where such number would be less than 0% or exceed 100% of a possible value).
- reference to “approximately” or “about” a value or parameter includes (and describes) embodiments that are directed to that value or parameter. For example, description referring to “about X” includes description of “X”.
- the term “or” means “and/or.”
- the term “and/or” as used in a phrase such as “A and/or B” herein is intended to include both A and B; A or B; A (alone); and B (alone).
- the term “and/or” as used in a phrase such as “A, B, and/or C” is intended to encompass each of the following embodiments: A, B, and C; A, B, or C; A or C; A or B; B or C; A and C; A and B; B and C; A (alone); B (alone); and C (alone).
- compositions, methods, and respective components thereof as described herein, which are exclusive of any element not recited in that description of the embodiment.
- pinch valves for with an enteral feeing pump systems Such as system is shown in FIG. 1 .
- an exemplary enteral feeding pump system 10 includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump.
- the enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation, wherein the tubing from the two fluid source containers passes through a pinching mechanism for selectively closing or opening a flow of fluid from either container into a patient.
- the pinching mechanism is actuated by an inflatable bladder linked to a micro air pump, or an inflatable bellows linked to a micro air pump.
- the inflatable bellows operates in the pressure range of 0.1 to 1 bar.
- a first embodiment of an exemplary pinching mechanism 80 includes tubing 200 residing within a single pincher 210 .
- a tightening and loosening of the single pincher 210 about the tubing 200 is controlled with an inflatable bladder 220 , shown here in an inflated condition.
- the inflatable bladder 200 is connected to a micro air pump (not shown).
- the micro air pump inflates the inflatable bladder 200 , causing the single pincher 210 to constrict around the tubing 200 .
- the tubing 200 is constricted, no fluid flows within the tubing 200 .
- the micro air pump deflates the inflatable bladder 200 , the single pincher 210 releases its grip on the tubing 200 and fluid flow within the tubing 200 is enabled.
- the pinching mechanism is controlled via an inflatable bellows linked to the micro air pump.
- the inflatable bellows operates in the pressure range of 0.1 to 1 bar.
- a second embodiment of an exemplary pinching mechanism 180 includes pincher 300 having a first channel 310 and a second channel 320 ,
- the dual pincher channels 310 , 320 enable placement on tubing (not shown) in both.
- a tightening and loosening of the pincher 300 about tubing in the channels 310 , 320 is controlled with an inflatable bladder (not shown) connected to a micro air pump (not shown).
- the micro air pump inflates the inflatable bladder, the first channel 310 and a second channel 320 clap down over the tubing, preventing fluid flow within the tubing.
- the micro air pump deflates the inflatable bladder, the pincher 300 releases its grip on the tubing 200 and fluid flow within the tubing in the channels 310 , 320 is enabled.
- the inflatable bladder is replaced by an inflatable bellows linked to the micro air pump.
- the inflatable bellows operates in the pressure range of 0.1 to 1 bar.
- FIG. 4 is a schematic illustration of an exemplary double pinch system.
- an exemplary enteral feeding pump system 110 includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump.
- the enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation, wherein the tubing from the two fluid source containers passes through an eccentric pinching mechanism for selectively closing or opening a flow of fluid from either container into a patient, the eccentric pinching mechanism actuated by one quadrant clockwise or one quadrant counterclockwise motor rotation.
- a first embodiment of an exemplary pinching mechanism 280 includes two flexible tubes (typically PVC or other flexible material), residing within the flow selector adapter 410 .
- the adapter When the adapter is installed onto the eccentric bearing 150 , it forms the pinch valve system.
- two views of the exemplary pinching mechanism 280 include firstly, the eccentric bearing 150 oriented in the central (neutral) position to accommodate adapter installation and, second, the eccentric bearing 150 rotated 90 degrees with sufficient force to pinch and stop fluid flow through either intervening tube. Reversing the rotation allows flow to resume through the tube. With rotation continuing 180 degrees (90 degrees beyond center position), the second intervening tubing section is pinched and fluid flow is stopped.
- FIG. 8 illustrates an exemplary disposable tubing set with adapter 410 that enables fluid flow from either selected source.
- flow selector valve assemblies for with an enteral feeing pump.
- an exemplary enteral feeding pump 10 constitutes a durable actuator and is illustrated and is used with a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, and an integral peristaltic tube section (see FIGS. 9 and 10 a - 10 c ).
- the enteral feeding pump 10 includes a motor that engages a disposable tube adapter and, when rotated, controls the fluid flow through one of two tubes, as described below.
- FIGS. 9 and 10 a - 10 c illustrate an exemplary flow selector valve assembly 20 of the present invention that is used with the enteral feeding pump 10 of FIG. 1 .
- the flow selector valve assembly 20 is operatively connected to the motor of the enteral feeding pump 10 , as further described below.
- the feeding pump system 10 engages the flow selector valve assembly 20 according to an embodiment of the present invention.
- the flow selector valve assembly 20 includes a disposable tube adapter 22 (i.e., a disposable set section) having two input flexible tubing channels 24 , 26 and one output tubing channel 28 .
- the two input tubing channels 24 , 26 are configured to receive two respective tubes 24 a , 24 b connected to two fluid sources (not shown).
- the output tubing channel 28 is configured to receive a feeding tube (i.e., an integral peristaltic tube section) that is inserted into a patient to provide the fluids/nutrients (not shown).
- the disposable tube adapter 22 (i.e., set section) is easily installed (as part of the flow selector valve assembly 20 ) on the enteral feeding pump 10 (i.e., durable actuator).
- the flow selector valve assembly 20 is configured to select either one of two fluid sources, or both simultaneously.
- the two input flexible tubing channels 24 , 26 are separate from the mechanism that closes the fluid flow through either of them (i.e., their respective tubes 24 a , 24 b ).
- the tube adapter 22 positions the flexible tubing channels 24 , 26 in relation with a receiver 30 .
- the receiver 30 has a central shaft 32 and an eccentric bearing 34 extending from a digitally controlled motor (e.g., in the feeding pump system 10 ).
- the bearing 34 is positioned at a 12 o'clock orientation, wherein neither of the input flexible tubing channels 24 , 26 nor the respective tubes 24 a , 26 a therein is compressed. This position facilitates loading and unloading of the adapter 22 /tubing assembly 20 .
- the flow selector valve assembly 20 therefore operates in coordination with the enteral feeding pump 10 to selectively close one of the input flexible tubing channels 24 , 26 and the respective tubes 24 a , 26 a therein.
- One advantage of the invention disclosed herein is the ease of installation of the disposable tube adapter 22 (i.e., set section) on the enteral feeding pump 10 (i.e., durable actuator).
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Abstract
Enteral feeding pump systems valves assemblies therefor and related fluid flow control methods. The system includes a disposable fluid delivery set with an integral peristaltic tube section and an enteral feeding pump. The system may also include a pinching mechanism for regulating the flow of nutrient formula or water out of the fluid delivery set. Also disclosed is a flow selector valve assembly for an enteral feeding pump system, the valve assembly including a tube adapter having two input flexible tubing channels and one output tubing channel and being configured to position the flexible tubing channels in relation with a receiver. The receiver has an eccentric bearing that is moveable between a first position in which neither of the input flexible tubing channels is compressed, and a second position in which the eccentric bearing compresses one of the input flexible tubing channels therein to prevent flow therethrough.
Description
- This application is a continuation of U.S. application Ser. No. 17/820,385 filed Aug. 17, 2022, which claims priority from (1) U.S. Provisional Patent Application No. 63/234,451, filed Aug. 18, 2021, (2) U.S. Provisional Patent Application No. 63/280,405, filed Nov. 17, 2021, and (3) U.S. Provisional Patent Application No. 63/355,291, filed Jun. 24, 2022, the disclosures of all of which are incorporated by reference herein in their entireties.
- Embodiments of the present invention relate to feeding pump systems, and more particularly, to enteral feeding pump systems and valve assemblies for use with such systems.
- In general, enteral feeding pump systems are used to supply fluid nutrition to patients who are unable to eat. The pumping system typically includes a pump and disposable tubing sets (see, e.g.,
FIG. 1 ). An enteral feeding pump may be designed to pump only liquid nutrient formula or nutrient formula and water, separately. - In order to maintain cleanliness and prevent contamination of the liquids being pumped, any component directly in contact with liquid must be disposable.
- The following presents a simplified summary of the innovation in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the invention. It is intended to neither identify key or critical elements of the invention nor delineate the scope of the invention. Its sole purpose is to present some concepts of the invention in a simplified form as a prelude to the more detailed description that is presented later.
- In an aspect of the invention, an enteral feeding pump system includes disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump. The enteral feeding pump including a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation. In another aspect, the tubing from the two fluid source containers passes through an adapter designed to install onto an eccentric, rotating bearing which selectively closes or opens a flow of fluid from either container into a patient, the eccentric bearing is actuated by a motor.
- In another aspect of the invention, an enteral feeding pump system includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section and an enteral feeding pump. The enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in the direction of rotation. In another aspect, the tubing from the two fluid source containers passes through a pinching mechanism for selectively closing or opening the flow of fluid from either container into the patient. The pinching mechanism is actuated by an inflatable bladder linked to a micro air pump. Alternatively, the pinching mechanism is actuated by an inflatable bellows linked to a micro air pump.
- In another aspect of the invention, an enteral feeding pump system includes a disposable fluid delivery set, an enteral feeding pump, the enteral feeding pump including rotor that engages a peristaltic tubing section of the disposable fluid delivery set, and a pinching mechanism for regulating the flow of nutrient formula or water out of the fluid delivery set.
- In another aspect of the invention, a flow selector valve assembly comprises a tube adapter having two input flexible tubing channels and one output tubing channel. The two input tubing channels are configured to receive two respective tubes connected to two fluid sources and the output tubing channel is configured to receive a feeding tube. The tube adapter is configured to position the flexible tubing channels in relation with a receiver, the receiver having a central shaft and an eccentric bearing extending from a digitally controlled motor. The eccentric bearing is moveable between a first position in which neither of the input flexible tubing channels nor the respective tubes therein is compressed, and a second position in which the eccentric bearing compresses one of the input flexible tubing channels and the tube therein to prevent flow therethrough.
- In another aspect of the invention, a flow selector valve assembly comprises a tube adapter having two input flexible tubing channels and one output tubing channel. The tube adapter is configured to position the flexible tubing channels in relation with a receiver which has a central shaft and an eccentric bearing. The eccentric bearing is moveable between a first position in which neither of the input flexible tubing channels is compressed, and a second position in which the eccentric bearing compresses one of the input flexible tubing channels therein to prevent flow therethrough.
- In another aspect of the invention, a method of controlling fluid flow in an enteral feeding pump system comprising the steps of: (a) providing a flow selector valve assembly including a disposable tube adapter having two input flexible tubing channels being configured to receive two respective tubes connected to two fluid sources, and an output tubing channel being configured to receive a feeding tube for providing fluids/nutrients to a patient, wherein the flow selector valve assembly is configured to select either one of the two fluid sources, or both simultaneously; (b) inserting the two respective tubes within the two input flexible tubing channels; (c) positioning the flexible tubing channels of the tube adapter in relation with a receiver, the receiver having an eccentric bearing extending from a digitally controlled motor in the enteral feeding pump system; (d) placing the eccentric bearing in a first position, wherein neither of the input flexible tubing channels nor the respective tubes therein is compressed, whereby loading and unloading of the disposable tube adapter of the tubing assembly is facilitated; and (e) moving the eccentric bearing to a second position in which the eccentric bearing compresses one of the input flexible tubing channels and the tube therein to prevent flow therethrough.
- These and other features and advantages will be apparent from a reading of the following detailed description and a review of the associated drawings. It is also to be understood that both the foregoing general description and the following detailed description are explanatory only and not restrictive of aspects as claimed.
- For the purpose of illustration, certain embodiments of the present invention are shown in the drawings described below. Like numerals in the drawings indicate like elements throughout. It should be understood, however, that the invention is not limited to the precise arrangements, dimensions, and instruments shown. In the drawings:
-
FIG. 1 is a front view of an exemplary enteral feeding pump system. -
FIG. 2 illustrates a first embodiment of an exemplary pinching mechanism. -
FIG. 3 illustrates a second embodiment of an exemplary pinching mechanism. -
FIG. 4 is a schematic illustration of an exemplary double pinch system. -
FIG. 5 is a front view of another exemplary enteral feeding pump system. -
FIG. 6 illustrates an embodiment of exemplary pinching mechanism components. -
FIG. 7 illustrates a third embodiment of an operating exemplary pinching mechanism. -
FIG. 8 illustrates an exemplary disposable tubing set with an adapter that enables selective pinching of formula or water tubes. -
FIG. 9 is an exploded view of a flow selector valve system according to the present invention; -
FIG. 10 a is a top perspective, partially-exploded view of the system ofFIG. 9 ; -
FIG. 10 b is a plan view of the system ofFIG. 9 in which both input flexible tubing channels/tubes of the system are open; and -
FIG. 10 c is a plan view of the system ofFIG. 9 in which one of the input flexible tubing channels/tubes of the system is pinched closed by the eccentric bearing. - It is to be appreciated that certain aspects, modes, embodiments, variations and features of the invention are described below in various levels of detail in order to provide a substantial understanding of the present invention.
- For convenience, the meaning of some terms and phrases used in the specification, examples, and appended claims, are provided below. Unless stated otherwise, or implicit from context, the following terms and phrases include the meanings provided below. The definitions are provided to aid in describing particular embodiments, and are not intended to limit the claimed invention, because the scope of the invention is limited only by the claims. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is an apparent discrepancy between the usage of a term in the art and its definition provided herein, the definition provided within the specification shall prevail.
- As used in this specification and the appended claims, the singular forms “a,” “an” and “the” include plural referents unless the content clearly dictates otherwise. For example, reference to “a cell” includes a combination of two or more cells, and the like.
- As used herein, the term “approximately” or “about” in reference to a value or parameter are generally taken to include numbers that fall within a range of 5%, 10%, 15%, or 20% in either direction (greater than or less than) of the number unless otherwise stated or otherwise evident from the context (except where such number would be less than 0% or exceed 100% of a possible value). As used herein, reference to “approximately” or “about” a value or parameter includes (and describes) embodiments that are directed to that value or parameter. For example, description referring to “about X” includes description of “X”.
- As used herein, the term “or” means “and/or.” The term “and/or” as used in a phrase such as “A and/or B” herein is intended to include both A and B; A or B; A (alone); and B (alone). Likewise, the term “and/or” as used in a phrase such as “A, B, and/or C” is intended to encompass each of the following embodiments: A, B, and C; A, B, or C; A or C; A or B; B or C; A and C; A and B; B and C; A (alone); B (alone); and C (alone).
- As used herein, the term “comprising” means that other elements can also be present in addition to the defined elements presented. The use of “comprising” indicates inclusion rather than limitation.
- The term “consisting of” refers to compositions, methods, and respective components thereof as described herein, which are exclusive of any element not recited in that description of the embodiment.
- Disclosed herein are pinch valves for with an enteral feeing pump systems. Such as system is shown in
FIG. 1 . - As shown in
FIG. 1 , an exemplary enteralfeeding pump system 10 is illustrated and includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump. The enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation, wherein the tubing from the two fluid source containers passes through a pinching mechanism for selectively closing or opening a flow of fluid from either container into a patient. In various embodiments, the pinching mechanism is actuated by an inflatable bladder linked to a micro air pump, or an inflatable bellows linked to a micro air pump. In a preferred embodiment, the inflatable bellows operates in the pressure range of 0.1 to 1 bar. - As shown in
FIG. 2 , a first embodiment of anexemplary pinching mechanism 80 includestubing 200 residing within asingle pincher 210. A tightening and loosening of thesingle pincher 210 about thetubing 200 is controlled with aninflatable bladder 220, shown here in an inflated condition. Theinflatable bladder 200 is connected to a micro air pump (not shown). In operation, the micro air pump inflates theinflatable bladder 200, causing thesingle pincher 210 to constrict around thetubing 200. When thetubing 200 is constricted, no fluid flows within thetubing 200. When the micro air pump deflates theinflatable bladder 200, thesingle pincher 210 releases its grip on thetubing 200 and fluid flow within thetubing 200 is enabled. - In another embodiment, the pinching mechanism is controlled via an inflatable bellows linked to the micro air pump. In a preferred embodiment, the inflatable bellows operates in the pressure range of 0.1 to 1 bar.
- As shown in
FIG. 3 , a second embodiment of anexemplary pinching mechanism 180 includespincher 300 having afirst channel 310 and asecond channel 320, Thedual pincher channels pincher 300 about tubing in thechannels first channel 310 and asecond channel 320 clap down over the tubing, preventing fluid flow within the tubing. When the micro air pump deflates the inflatable bladder, thepincher 300 releases its grip on thetubing 200 and fluid flow within the tubing in thechannels - In another embodiment, the inflatable bladder is replaced by an inflatable bellows linked to the micro air pump. In a preferred embodiment, the inflatable bellows operates in the pressure range of 0.1 to 1 bar.
-
FIG. 4 is a schematic illustration of an exemplary double pinch system. - As shown in
FIG. 5 , an exemplary enteralfeeding pump system 110 is illustrated and includes a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, an integral peristaltic tube section, and an enteral feeding pump. The enteral feeding pump includes a rotor that engages the peristaltic tube section and, when rotated, causes liquid to flow in a direction of rotation, wherein the tubing from the two fluid source containers passes through an eccentric pinching mechanism for selectively closing or opening a flow of fluid from either container into a patient, the eccentric pinching mechanism actuated by one quadrant clockwise or one quadrant counterclockwise motor rotation. - As shown in
FIG. 6 , a first embodiment of anexemplary pinching mechanism 280 includes two flexible tubes (typically PVC or other flexible material), residing within theflow selector adapter 410. When the adapter is installed onto theeccentric bearing 150, it forms the pinch valve system. - As shown in
FIG. 7 , two views of theexemplary pinching mechanism 280 include firstly, theeccentric bearing 150 oriented in the central (neutral) position to accommodate adapter installation and, second, theeccentric bearing 150 rotated 90 degrees with sufficient force to pinch and stop fluid flow through either intervening tube. Reversing the rotation allows flow to resume through the tube. With rotation continuing 180 degrees (90 degrees beyond center position), the second intervening tubing section is pinched and fluid flow is stopped. -
FIG. 8 illustrates an exemplary disposable tubing set withadapter 410 that enables fluid flow from either selected source. - Also disclosed herein are flow selector valve assemblies for with an enteral feeing pump.
- Referring again to
FIG. 1 , an exemplaryenteral feeding pump 10 constitutes a durable actuator and is illustrated and is used with a disposable fluid delivery set with two separate source containers connected by tubing to a tubing adapter that combines flow from the two separate tubes into a single fluid stream, and an integral peristaltic tube section (seeFIGS. 9 and 10 a-10 c). Theenteral feeding pump 10 includes a motor that engages a disposable tube adapter and, when rotated, controls the fluid flow through one of two tubes, as described below. -
FIGS. 9 and 10 a-10 c illustrate an exemplary flowselector valve assembly 20 of the present invention that is used with theenteral feeding pump 10 ofFIG. 1 . The flowselector valve assembly 20 is operatively connected to the motor of theenteral feeding pump 10, as further described below. - As shown in
FIGS. 9 and 10 a-10 c, thefeeding pump system 10 engages the flowselector valve assembly 20 according to an embodiment of the present invention. The flowselector valve assembly 20 includes a disposable tube adapter 22 (i.e., a disposable set section) having two inputflexible tubing channels output tubing channel 28. The twoinput tubing channels respective tubes 24 a, 24 b connected to two fluid sources (not shown). Theoutput tubing channel 28 is configured to receive a feeding tube (i.e., an integral peristaltic tube section) that is inserted into a patient to provide the fluids/nutrients (not shown). - The disposable tube adapter 22 (i.e., set section) is easily installed (as part of the flow selector valve assembly 20) on the enteral feeding pump 10 (i.e., durable actuator).
- The flow
selector valve assembly 20 is configured to select either one of two fluid sources, or both simultaneously. The two inputflexible tubing channels respective tubes 24 a, 24 b). Thetube adapter 22 positions theflexible tubing channels receiver 30. Thereceiver 30 has a central shaft 32 and aneccentric bearing 34 extending from a digitally controlled motor (e.g., in the feeding pump system 10). - As shown in
FIG. 10 b , in operation, thebearing 34 is positioned at a 12 o'clock orientation, wherein neither of the inputflexible tubing channels respective tubes adapter 22/tubing assembly 20. - As shown in
FIG. 10 c , when thebearing 34 is moved to the 9 o'clock position (e.g., by counterclockwise rotation of the motor of the feeding pump 10), the bearing 34 compresses the inputflexible tubing channel 24, pinching thetube 24 a therein closed and preventing flow therethrough. Similarly, when thebearing 34 is moved to the 3 o'clock position (e.g., by clockwise rotation of the motor of the feeding pump 10), the bearing 34 compresses the inputflexible tubing channel 26, pinching thetube 26 a therein closed and preventing flow therethrough (not shown). - The flow
selector valve assembly 20 therefore operates in coordination with theenteral feeding pump 10 to selectively close one of the inputflexible tubing channels respective tubes - One advantage of the invention disclosed herein is the ease of installation of the disposable tube adapter 22 (i.e., set section) on the enteral feeding pump 10 (i.e., durable actuator).
- Unless otherwise defined herein, scientific and technical terms used in connection with the present application shall have the meanings that are commonly understood by those of ordinary skill in the art to which this disclosure belongs. It should be understood that this invention is not limited to the particular methodology, protocols, examples, etc., described herein and as such can vary. The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention, which is defined solely by the claims.
- Other terms are defined herein within the description of the various aspects of the invention.
- The description of embodiments of the disclosure is not intended to be exhaustive or to limit the disclosure to the precise form disclosed. While specific embodiments of, and examples for, the disclosure are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the disclosure, as those skilled in the relevant art will recognize. For example, while method steps or functions are presented in a given order, alternative embodiments may perform functions in a different order, or functions may be performed substantially concurrently. The teachings of the disclosure provided herein can be applied to other procedures or methods as appropriate. The various embodiments described herein can be combined to provide further embodiments. Aspects of the disclosure can be modified, if necessary, to employ the compositions, functions and concepts of the above references and application to provide yet further embodiments of the disclosure. These and other changes can be made to the disclosure in light of the detailed description. All such modifications are intended to be included within the scope of the appended claims.
- Specific elements of any of the foregoing embodiments can be combined or substituted for elements in other embodiments. Furthermore, while advantages associated with certain embodiments of the disclosure have been described in the context of these embodiments, other embodiments may also exhibit such advantages, and not all embodiments need necessarily exhibit such advantages to fall within the scope of the disclosure.
- The foregoing written specification is considered to be sufficient to enable one skilled in the art to practice the present aspects and embodiments. The present aspects and embodiments are not to be limited in scope by examples provided, since the examples are intended as a single illustration of one aspect and other functionally equivalent embodiments are within the scope of the disclosure. Various modifications in addition to those shown and described herein will become apparent to those skilled in the art from the foregoing description and fall within the scope of the appended claims. The advantages and objects described herein are not necessarily encompassed by each embodiment. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments described herein. Such equivalents are intended to be encompassed by the following claims.
- All patents and other publications; including literature references, issued patents, published patent applications, and co-pending patent applications; cited throughout this application are expressly incorporated herein by reference for the purpose of describing and disclosing, for example, the methodologies described in such publications that might be used in connection with the technology described herein. These publications are provided solely for their disclosure prior to the filing date of the present application. Nothing in this regard should be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior invention or for any other reason. All statements as to the date or representation as to the contents of these documents is based on the information available to the applicants and does not constitute any admission as to the correctness of the dates or contents of these documents.
Claims (20)
1. A flow selector valve assembly for an enteral feeding pump system, comprising:
a disposable tube adapter having first and second input flexible tubing channels and one output tubing channel, wherein the first and second input flexible tubing channels are configured to receive two respective tubes connected to two fluid sources, and wherein the one output tubing channel is configured to receive a tube that connects to a patient feeding tube to provide at least one of fluids and nutrients from at least the two fluid sources;
the disposable tube adapter configured to position the first and second input flexible tubing channels in relation with a receiver, the receiver having a central shaft with an eccentric bearing such that at least a portion of the central shaft is received by and within the disposable tube adapter, the receiver configured to receive the tube adapter with the central shaft positioned between the first and second input flexible tubing channels while the eccentric bearing is in a first position in which neither of the first and second input flexible tubing channels is constricted;
wherein the eccentric bearing is moveable among the first position, a second position rotated 90 degrees clockwise from the first position in which the first flexible input tube is pinched between the eccentric bearing and an opposing wall of the disposable tube adapter to prevent flow therethrough, and a third position rotated 90 degrees counterclockwise from the first position in which the second flexible input tube is pinched between the eccentric bearing and the opposing wall of the disposable tube adapter to prevent flow therethrough.
2. The flow selector valve assembly of claim 1 , wherein in the second position, the eccentric bearing is rotated in a first direction towards the first input flexible tubing channel to pinch the first input flexible tubing channel.
3. The flow selector valve assembly of claim 2 , wherein in the third position, the eccentric bearing is rotated in a second direction towards the second input flexible tubing channel to pinch the second input flexible tubing channel.
4. The flow selector valve assembly of claim 1 , wherein the eccentric bearing is configured to be actuated by a digitally controlled motor within the enteral feeding pump system.
5. The flow selector valve assembly of claim 1 , wherein the one output tubing channel is configured to receive an elastomeric peristaltic tube section which further connects to the tube that connects to the patient feeding tube.
6. The flow selector valve assembly of claim 1 , wherein the first position is at a 12 o'clock orientation.
7. The flow selector valve assembly of claim 1 , wherein the second position is selected from the group consisting of a 3 o'clock orientation and a 9 o'clock orientation.
8. A flow selector valve assembly for an enteral feeding pump system, comprising:
a disposable tube adapter having first and second input flexible tubing channels and one output tubing channel, wherein the first and second input flexible tubing channels are configured to receive two respective tubes connected to two fluid sources, and wherein the one output tubing channel is configured to receive a tube that connects to a patient feeding tube to provide at least one of fluids and nutrients from at least the two fluid sources;
the disposable tube adapter configured to position the first and second input flexible tubing channels in relation with a receiver, the receiver having a central shaft with an eccentric bearing such that at least a portion of the central shaft is received by and within the disposable tube adapter, the receiver configured to receive the tube adapter with the central shaft positioned between the first and second input flexible tubing channels while the eccentric bearing is in a first position in which neither of the first and second input flexible tubing channels is constricted;
wherein the eccentric bearing is moveable among the first position, a second position rotated 90 degrees clockwise from the first position in which the first flexible input tube is pinched between the eccentric bearing and an opposing wall of the disposable tube adapter to prevent flow therethrough, and a third position rotated 90 degrees counterclockwise from the first position in which the second flexible input tube is pinched between the eccentric bearing and the opposing wall of the disposable tube adapter to prevent flow therethrough;
wherein in the second position, the eccentric bearing is rotated in a first direction towards the first input flexible tubing channel to pinch the first input flexible tubing channel; and
wherein in the third position, the eccentric bearing is rotated in a second direction towards the second input flexible tubing channel to pinch the second input flexible tubing channel.
9. The flow selector valve assembly of claim 8 , wherein the eccentric bearing is configured to be actuated by a digitally controlled motor within the enteral feeding pump system.
10. The flow selector valve assembly of claim 8 , wherein the one output tubing channel is configured to receive an elastomeric peristaltic tube section which further connects to the tube that connects to the patient feeding tube.
11. The flow selector valve assembly of claim 8 , wherein the first position is at a 12 o'clock orientation.
12. The flow selector valve assembly of claim 8 , wherein the second position is selected from the group consisting of a 3 o'clock orientation and a 9 o'clock orientation.
13. A flow selector valve assembly for an enteral feeding pump system, comprising:
a disposable tube adapter having first and second input flexible tubing channels and one output tubing channel, wherein the first and second input flexible tubing channels are configured to receive two respective tubes connected to two fluid sources, and wherein the one output tubing channel is configured to receive a tube that connects to a patient feeding tube to provide at least one of fluids and nutrients from at least the two fluid sources;
the disposable tube adapter configured to position the first and second input flexible tubing channels in relation with a receiver, the receiver having a central shaft with an eccentric bearing such that at least a portion of the central shaft is received by and within the disposable tube adapter, the receiver configured to receive the tube adapter with the central shaft positioned between the first and second input flexible tubing channels while the eccentric bearing is in a first position in which neither of the first and second input flexible tubing channels is constricted;
wherein the eccentric bearing is moveable between the first position and a second position rotated 90 degrees clockwise from the first position in which the first flexible input tube is pinched between the eccentric bearing and an opposing wall of the disposable tube adapter to prevent flow therethrough.
14. The flow selector valve assembly of claim 13 , wherein in the second position, the eccentric bearing is rotated in a first direction towards the first input flexible tubing channel to pinch the first input flexible tubing channel.
15. The flow selector valve assembly of claim 13 , wherein the eccentric bearing is further moveable to a third position rotated 90 degrees counterclockwise from the first position in which the second flexible input tube is pinched between the eccentric bearing and the opposing wall of the disposable tube adapter to prevent flow therethrough.
16. The flow selector valve assembly of claim 15 , wherein in the third position, the eccentric bearing is rotated in a second direction towards the second input flexible tubing channel to pinch the second input flexible tubing channel.
17. The flow selector valve assembly of claim 13 , wherein the eccentric bearing is configured to be actuated by a digitally controlled motor within the enteral feeding pump system.
18. The flow selector valve assembly of claim 13 , wherein the one output tubing channel is configured to receive an elastomeric peristaltic tube section which further connects to the tube that connects to the patient feeding tube.
19. The flow selector valve assembly of claim 13 , wherein the first position is at a 12 o'clock orientation.
20. The flow selector valve assembly of claim 13 , wherein the second position is selected from the group consisting of a 3 o'clock orientation and a 9 o'clock orientation.
Priority Applications (1)
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US18/352,824 US20230355864A1 (en) | 2021-08-18 | 2023-07-14 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
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US202163234451P | 2021-08-18 | 2021-08-18 | |
US202163280405P | 2021-11-17 | 2021-11-17 | |
US202263355291P | 2022-06-24 | 2022-06-24 | |
US17/820,385 US11896798B2 (en) | 2021-08-18 | 2022-08-17 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
US18/352,824 US20230355864A1 (en) | 2021-08-18 | 2023-07-14 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
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US17/820,385 Continuation US11896798B2 (en) | 2021-08-18 | 2022-08-17 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
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US20230355864A1 true US20230355864A1 (en) | 2023-11-09 |
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US17/820,385 Active US11896798B2 (en) | 2021-08-18 | 2022-08-17 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
US18/352,824 Pending US20230355864A1 (en) | 2021-08-18 | 2023-07-14 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
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US17/820,385 Active US11896798B2 (en) | 2021-08-18 | 2022-08-17 | Enteral feeding pump systems, valve assemblies therefor and fluid flow control methods for same |
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US20230056405A1 (en) | 2023-02-23 |
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