JP2018165485A - Liquid diet administration system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid diet administration system capable of quickly and surely administering liquid diet with a predetermined viscosity to a user.SOLUTION: A liquid diet administration system 1 is a device used for administering liquid diet to a user, and has tubes 91, 92, 93, 94 having flexibility, a three-way stop cock 4, a gear pump 5A, a liquid diet bag 2 and a syringe 3. The gear pump 5A has a motor configured to supply driving force, and a pump body configured to operate with the driving force of the motor to flow fluid diet. Also, the gear pump 5A is provided in the middle of a liquid diet line 10. The viscosity of the liquid diet is within a range of 30-50000 mPa s.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid food administration system.

  For patients who have difficulty in feeding food from the mouth to the stomach due to trauma of the esophagus or oral cavity, disease, or surgery, for example, use a nasal tube or gastrostomy etc. Nutrition therapy such as nutritional supplementation is performed.

  The liquid food used for such nutrition therapy is generally stored in a bag-like bag having flexibility. For example, in nasal feeding using a nasal tube, a nasal tube connected to a bag is inserted from the nasal cavity to the stomach or duodenum, and water, nutrients, drugs, and the like are administered through the nasal tube.

  In addition, when the viscosity of a liquid food is low, the liquid food in a stomach flows back into the esophagus, or the water of a liquid food cannot be absorbed in the body and diarrhea occurs. Therefore, the liquid food is semi-solid, and the viscosity is increased by adding a tromi agent or a thickener.

  By the way, in the medical field, when liquid food is administered to a patient, for example, the liquid food is pushed out of the bag by pressing the bag with a hand and pressing it. However, in the method of pushing the bag by hand, the whole bag cannot be pressed at once, so that it is difficult to push out almost all of the liquid food, and the liquid food may remain in the bag.

  In addition, when feeding the liquid food into the stomach, it is preferable to push the liquid food out of the bag at a substantially constant speed. However, the method of pushing the bag by hand is not suitable because the extrusion rate of the liquid food tends to vary.

  Further, in the method of pushing the bag by hand, a pressing force must always be applied to the bag, which takes time and increases the work time.

  Patent Document 1 discloses a pressure bag device that pressurizes a bag containing liquid food (hereinafter referred to as “liquid food bag”).

  The pressurized bag apparatus described in Patent Document 1 has a bag shape and is provided with a bag body that is supplied with a working fluid and inflates, and a storage portion that is provided in the bag body and accommodates a liquid food bag. A pressurizing bag for pressurizing the liquid food bag is provided by inflating the main body. When using, a liquid food bag is accommodated in the accommodating part of a pressurized bag. Next, the fluid supply mechanism is connected to the bag body, and the working fluid is supplied into the bag body by the fluid supply mechanism to inflate the bag body. Thereafter, the fluid supply mechanism is removed. Since the liquid food bag is pressed by the pressure bag, when the flow path of the nasal tube is opened, the liquid food is pushed out from the liquid food bag and the liquid food is administered to the patient.

  However, in the pressurized bag apparatus described in Patent Document 1, the liquid food is initially served well, but at the end, the amount of the liquid food in the liquid food bag is reduced. Therefore, there is a disadvantage that the pressure applied to the liquid food bag is reduced, and the liquid food is not well served. As a result, the time required to administer the liquid food becomes long, or when the liquid food has a high viscosity, it is not possible to administer all the liquid food in the liquid food bag. It may remain.

Utility Model Registration No. 3179627

  An object of the present invention is to provide a liquid food administration system capable of quickly and reliably administering a liquid food having a predetermined viscosity to a user.

Such an object is achieved by the present inventions (1) to (8) below.
(1) A liquid food line through which a liquid food having a viscosity of 30 to 50,000 mPa · s flows,
A liquid food administration system comprising a gear pump provided in the middle of the liquid food line and for flowing the liquid food.

  (2) The liquid food administration system according to (1), wherein a liquid food bag storing the liquid food is connectable upstream of the gear pump of the liquid food line.

  (3) The liquid food administration system according to (1) or (2), wherein a multi-way stopcock is provided upstream of the gear pump of the liquid food line.

(4) The gear pump can change its output,
A control unit for controlling the driving of the gear pump;
The liquid food administration system according to any one of (1) to (3), further including an operation unit that performs an operation of adjusting an output of the gear pump.

  (5) The liquid food administration system according to (4), wherein the control unit stops the gear pump when the gear pump is driven for a predetermined time.

(6) The gear pump includes a driving force supply source that supplies a driving force;
A pump body that operates with the driving force and flows the liquid food;
The pump body has a pair of gears that mesh with each other and rotate in opposite directions;
The liquid food administration system according to any one of (1) to (5), wherein the liquid food is pushed out by the pair of gears when the pair of gears is rotated by the driving force.

  (7) The liquid food administration system according to (6), wherein the gear pump has a speed reducer between the driving force supply source and the pump body.

  (8) The liquid diet administration system according to (7), wherein the speed reducer has a planetary gear mechanism.

  According to this invention, since it has the gear pump which flows a liquid food, the liquid food of predetermined viscosity can be administered to a user rapidly and reliably.

It is a figure which shows 1st Embodiment of the liquid food administration system of this invention. It is a perspective view which shows the gear pump of the liquid food administration system shown in FIG. It is sectional drawing which shows the pump main body of the gear pump of the liquid food administration system shown in FIG. It is a perspective view which shows the gear pump in 2nd Embodiment of the liquid food administration system of this invention. It is a disassembled perspective view which shows the gear pump shown in FIG.

  Hereinafter, the liquid food administration system of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.

<First Embodiment>
FIG. 1 is a diagram showing a first embodiment of a liquid food administration system of the present invention. FIG. 2 is a perspective view showing a gear pump of the liquid food administration system shown in FIG. 3 is a cross-sectional view showing a pump body of a gear pump of the liquid food administration system shown in FIG.

  In the following, for convenience of explanation, the upper side in FIG. 1 is referred to as “base end” or “upstream”, the lower side is referred to as “tip” or “downstream”, the right side is referred to as “right”, and the left side is referred to as “left”. Further, the upper side in FIG. 3 is called “upper”, the lower side is called “lower”, the right side is called “base” or “upstream”, and the left side is called “tip” or “downstream”.

  A liquid food administration system 1 shown in FIG. 1 is a device used when administering liquid food to a user (patient). For example, a nutrient solution or the like is given to the user by using a nasal tube or gastrostomy. Of liquid food can be administered.

  As shown in FIG. 1, the liquid food administration system 1 includes flexible tubes 91, 92, 93, 94, a three-way stopcock (multi-way stopcock) 4, a gear pump 5 </ b> A, and a liquid food bag (bag) 2. And a syringe 3.

  A liquid food bag (bag) 2 is detachably connected to the upstream end of the tube 91. The liquid food bag 2 may be connected to the upstream end of the tube 91 from the beginning, or may be connected during use. Further, the downstream end of the tube 91 is connected to the port 41 of the three-way cock 4. Moreover, the three-way stopcock 4 and the liquid food bag 2 are respectively arranged upstream of the gear pump 5A. Instead of the three-way cock 4, a multi-way cock having four or more ports may be provided.

  The syringe 3 is detachably connected to the upstream end of the tube 92. For example, various drugs can be injected by the syringe 3. The downstream end of the tube 92 is connected to the port 42 of the three-way stopcock 4.

  Further, the upstream end of the tube 93 is connected to the port 43 of the three-way cock 4, and the downstream end is connected to the input port 72A (see FIGS. 2 and 3) of the gear pump 5A. Yes.

  The tube 94 is a nasal tube in the present embodiment. The upstream end portion of the tube 94 is connected to the output port 73A (see FIGS. 2 and 3) of the gear pump 5A, and the downstream end portion is inserted from the user's nasal cavity during use. . In addition, the tube 94 is not limited to a nasal tube, In addition, the tube etc. which are used for a gastrostoma etc. are mentioned, for example.

  Further, the liquid food line 10 through which the liquid food flows is constituted by the tubes 91, 93, 94, and the like. In the present embodiment, the gear pump 5A is provided between the tube 93 and the tube 94 in the middle of the liquid food line 10 as described above. The tube 92 may be included in the liquid food line 10.

  The constituent material of the tubes 91 to 94 is not particularly limited, and examples thereof include soft polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene, polypropylene, polybutadiene, and the like, or materials mainly composed of these.

  The liquid food bag 2 has flexibility and has a bag shape. The liquid food bag 2 stores liquid food in advance. The liquid food may be stored in the liquid food bag 2 later.

  Moreover, the viscosity of the liquid food is in the range of 30 to 50000 mPa · s, preferably in the range of 30 to 40000 mPa · s, more preferably in the range of 1000 to 30000 mPa · s, More preferably within the range of 30000 mPa · s, particularly preferably within the range of 2000 to 25000 mPa · s.

  If the viscosity of the liquid food is larger than the above upper limit, the residence time in the stomach becomes long and the burden on the digestive tract may increase, which is not suitable. If the viscosity of the liquid food is larger than the upper limit value, the liquid food may not flow or the flow rate of the liquid food may be greatly reduced depending on other conditions.

In addition, if the viscosity of the liquid food is smaller than the lower limit, problems such as the liquid food in the stomach flowing back into the esophagus or the liquid food in the stomach being discharged without peristalsis and causing diarrhea may occur. There is.
Moreover, the kind of liquid food is not specifically limited, For example, a nutrient etc. are mentioned.

  Moreover, it does not specifically limit as a constituent material of the bag main-body part of the liquid food bag 2, For example, polyolefin, polyethylene terephthalate (PET), polyethylene, polypropylene, polybutadiene, ethylene-vinyl acetate copolymer (EVA), Various thermoplastic elastomers such as polyester such as polybutylene terephthalate (PBT), soft polyvinyl chloride, polyvinylidene chloride, silicone, polyurethane, polyamide elastomer, or any combination thereof (blend resin, polymer alloy, laminate, etc.) ).

  A gear pump 5A shown in FIG. 2 and FIG. 3 is a small-sized pump, a motor (driving force supply source) 6A that supplies driving force, and a pump body 7A that operates with the driving force of the motor 6A and flows liquid food. have.

  The pump body 7A has a housing 71A and a pair of gears 74A and 75A that are rotatably provided in the housing 71A. The gears 74A and 75A mesh with each other and rotate in opposite directions. In the present embodiment, the gear 74A rotates counterclockwise and the gear 75A rotates clockwise (see FIG. 3) in plan view (viewed from above in FIG. 2). One of the gears 74A and 75A is fixed to the output shaft of the motor 6A. Accordingly, when one of the gears 74A and 75A is rotated by the driving force of the motor 6A, the other is also rotated.

  Further, an input port 72A communicating with the housing 71A is provided on the side surface of the housing 71A, and an output port 73A communicating with the housing 71A is provided on the lower surface of the housing 71A in FIG. . When the gears 74A and 75A are rotated by the driving force of the motor 6A, the liquid food flows into the housing 71A from the input port 72A, is pushed out by the gears 74A and 75A, and flows out from the output port 73A. In this case, in plan view, the gear 74A rotates counterclockwise and the gear 75A rotates clockwise, so that the liquid food moves along the inner surface of the housing 71A.

  Contrary to the above, the gear 74A may rotate clockwise and the gear 75A may rotate counterclockwise in plan view. In this case, the liquid food flowing in from the input port 72A moves between the gear 74A and the gear 75A and moves toward the output port 73A by the rotation of the gears 74A and 75A (see the pump body 7B in FIG. 5). .

  Moreover, although the number of gears of the pump main body 7A of the gear pump 5A is two in this embodiment, it is not limited to this, and may be one or three or more, for example. The gear pump 5A may have a speed reducer between the motor 6A and the pump body 7A.

  Moreover, although the dimension and mass of gear pump 5A are not specifically limited, It is preferable that it is small and lightweight. Specifically, the mass of the gear pump 5A is preferably in the range of 10 to 300 g, more preferably in the range of 20 to 200 g, and still more preferably in the range of 30 to 150 g.

  If the mass of the gear pump 5A is larger than the upper limit value, it is inconvenient to carry. Moreover, when the mass of the gear pump 5A is smaller than the lower limit value, the output is reduced, and the flow rate of the liquid food is reduced.

  As shown in FIG. 1, the liquid food administration system 1 includes a control unit 11, an operation unit 12, a display unit 13, and a storage unit 14.

  The control part 11 has a microcomputer etc., for example, and controls each part of the liquid food administration system 1, such as the gear pump 5A, the display part 13, and the storage part 14.

  The operation unit 12 includes, for example, various switches, buttons, dials, and the like. The user can operate the operation unit 12 to perform various instructions (operations) to the control unit 11, for example, an operation to drive (start) the gear pump 5A, an operation to stop the gear pump 5A, and the like. Instead of the operation unit 12 and the display unit 13, a display input unit (not shown) having both the operation unit 12 and the display unit 13 may be provided. As the display input unit, for example, a touch panel or the like can be used.

  The display unit 13 includes, for example, a liquid crystal display panel, an EL display panel, or the like. For example, various types of information are displayed on the display unit 13.

  The storage unit 14 is configured by a semiconductor memory such as a ROM, a flash memory, an EEPROM, or a RAM, for example. The storage unit 14 stores, for example, various programs such as a program for executing the control operation of the liquid food administration system 1, various information (data), and the like. These programs and data are read from the storage unit 14 when necessary.

  Here, the driving of the gear pump 5 </ b> A is controlled by the control unit 11. Further, the output of the gear pump 5A can be changed by changing the applied voltage. Hereinafter, a configuration example of the control of the gear pump 5A will be described.

(Configuration 1)
The output of the gear pump 5A, that is, the flow rate of the liquid food can be adjusted in a plurality of stages. And operation which adjusts the output of gear pump 5A, ie, operation which adjusts the flow rate of a liquid food, is performed with the dial (not shown) etc. which were provided in operation part 12.

(Configuration 2)
When the gear pump 5A is driven for a certain time, the gear pump 5A is stopped. In this case, for example, a timer (time measuring unit) (not shown) is provided, and the timer starts measuring time when the gear pump 5A starts driving. Then, when the timer measures the preset time, the control unit 11 stops the gear pump 5A. Note that the gear pump 5 </ b> A can be stopped by the user operating a stop button (not shown) provided on the operation unit 12.

  Next, the procedure for using the liquid food administration system 1 and the operation of the liquid food administration system 1 will be described with reference to FIG.

  First, in a state where the tube 94, which is a nasal tube, is inserted from the user's nasal cavity to the stomach or duodenum, the three-way stopcock 4 is operated so that the lumen of the tube 91 and the lumen of the tube 93 communicate with each other. The gear pump 5A is driven by operating a start button (not shown) of the unit 12.

  The liquid food in the liquid food bag 2 sequentially flows through the lumens of the tubes 91, 93, and 94 by the gear pump 5A and is administered to the user.

  When the administration of the liquid food is completed, a stop button (not shown) of the operation unit 12 is operated to stop the gear pump 5A. As described above, the gear pump 5A may be automatically stopped.

  As described above, according to the liquid food administration system 1, since the gear pump 5 </ b> A is provided in the middle of the liquid food line 10, the liquid food having the above-described viscosity can be quickly and reliably administered to the user. it can.

  Further, since the gear pump 5A of the liquid food administration system 1 has a higher output than the gear pump 5B of the second embodiment described later, the liquid food is administered to the user more quickly and more reliably than the second embodiment. be able to. Moreover, a liquid food having a higher viscosity can be quickly and reliably administered to the user.

Second Embodiment
FIG. 4 is a perspective view showing a gear pump in the second embodiment of the liquid food administration system of the present invention. FIG. 5 is an exploded perspective view showing the gear pump shown in FIG.

  In the following, for convenience of explanation, the upper side in FIG. 5 is “upper”, “base end” or “upstream”, the lower side is “lower”, “tip” or “downstream”, the right side is “right”, The left side is called “left”.

  Hereinafter, although the second embodiment will be described, the description will focus on the differences from the above-described embodiment, and the description of the same matters will be omitted.

  This embodiment is mainly the same as the first embodiment except that the configuration of the gear pump is different.

  The gear pump 5B of the liquid food administration system 1 of the present embodiment shown in FIGS. 4 and 5 is a smaller pump than the gear pump 5A of the first embodiment, and a motor that supplies driving force (driving force supply source). 6B, a pump main body 7B that operates by the driving force of the motor 6B and flows liquid food, and a speed reducer 8B provided between the motor 6B and the pump main body 7B.

  The speed reducer 8B has a planetary gear mechanism, and is a planetary gear speed reducer having a two-stage configuration in the present embodiment. The speed reducer 8B includes a cylindrical housing 81B, a support plate 84B and a support plate 87B that are rotatably provided in the housing 81B, and three gears (planetary gears) that are rotatably provided on the support plate 84B. 83B, a gear (sun gear) 82B meshed with each gear 83B, three gears (planetary gear) 86B rotatably provided on the support plate 87B, and a gear (sun gear) 85B meshed with each gear 86B have,

  The support plate 87B is disposed below the support plate 84B in FIG. The gear 82B is fixed to the output shaft of the motor 6B. The gear 85B is fixed to the lower surface of the support plate 84B in FIG.

  Further, teeth (not shown) that mesh with the gears 83B and the gears 86B are formed on the inner peripheral surface of the housing 81B.

  The driving force of the motor 6B of the gear pump 5B is decelerated by the speed reducer 8B and transmitted to the pump body 7B. A large torque can be obtained by the reduction gear 8B.

  Note that the reduction gear 8B of the gear pump 5B has a two-stage configuration in the present embodiment, but is not limited thereto, and may have, for example, a one-stage configuration or a three-stage or more configuration.

  The number of planetary gears of the planetary gear mechanism of the speed reducer 8B of the gear pump 5B is three in the present embodiment, but is not limited thereto, and may be one, two, four or more, for example. .

  The pump body 7B includes a housing 71B and a pair of gears 74B and 75B that are rotatably provided in the housing 71B. The gears 74B and 75B mesh with each other and rotate in opposite directions. In the present embodiment, the gear 74B rotates clockwise and the gear 75B rotates counterclockwise (see FIG. 5) in plan view (viewed from above in FIG. 5). In addition, in this embodiment, one of the gears 74B and 75B, the gear 74B is fixed to the output shaft (output unit) of the speed reducer 8B. Therefore, when the gear 74B is rotated by the driving force of the motor 6B, the gear 75B is also rotated.

  Further, an input port 72B communicating with the housing 71B is provided on the upper surface of the housing 71B in FIG. 4, and an output port communicating with the housing 71B is provided on the lower surface of the housing 71B in FIG. 73B is provided. As the gears 74B and 75B are rotated by the driving force of the motor 6B, the liquid food flows into the housing 71B from the input port 72B, is pushed out by the gears 74B and 75B, and flows out from the output port 73B. In this case, in plan view, the gear 74B rotates clockwise and the gear 75B rotates counterclockwise, so that the liquid food passes between the gear 74B and the gear 75B in the housing 71B.

  Contrary to the above, the gear 74B may rotate counterclockwise and the gear 75B may rotate clockwise in plan view. In this case, the liquid food flowing in from the input port 72B moves toward the output port 73B along the inner surface of the housing 71B by the rotation of the gears 74B and 75B (see the pump body 7A in FIG. 3).

  The number of gears of the pump main body 7B of the gear pump 5B is two in this embodiment, but is not limited to this, and may be one or three or more, for example.

  Moreover, although the dimension and mass of the gear pump 5B are not specifically limited, It is preferable that it is small and lightweight. Specifically, the mass of the gear pump 5B is preferably in the range of 0.5 to 50 g, more preferably in the range of 1 to 20 g, and further in the range of 2 to 10 g. preferable.

  If the mass of the gear pump 5B is larger than the upper limit value, it is inconvenient to carry, and the gear pump 5B may hang down under its own weight during use of the liquid food administration system 1. On the other hand, when the mass of the gear pump 5B is smaller than the lower limit value, the output is reduced and the flow rate of the liquid food is reduced.

  According to the second embodiment as described above, the same effect as that of the first embodiment described above can be exhibited.

Moreover, in this liquid food administration system 1, since the gear pump 5B that is relatively small and relatively light among the gear pumps is used, it is convenient to carry. Moreover, it can suppress that the gear pump 5B hangs down with dead weight during use of the liquid food administration system 1, and it can be used comfortably.
In order to confirm the effect of the liquid food administration system 1 described above, the following experiment was performed.

<Experiment 1>
(experimental method)
The above-described liquid food administration system 1, that is, the liquid food administration system (Example) of the present invention having a gear pump, and the comparative liquid food administration system having the same configuration as that of the Example except that the gear pump is not provided. (Comparative Example) was prepared. In this experiment, the three-way stopcock was omitted, and the liquid food bag and the gear pump were connected by a tube.

In this embodiment, the liquid food bag is hung and the gear pump is driven by applying a voltage of 3V to discharge all the liquid food in the liquid food bag (hereinafter referred to as “discharge time”). Was measured. In this case, the amount of liquid food discharged was measured for one minute, and the discharge time was calculated based on the amount of liquid food discharged during one minute.
On the other hand, in the comparative example, the liquid food in the liquid food bag was discharged by natural fall.

(Gear pump used in the examples)
Product name: Micro geared pump 80900 (manufactured by Seiko Clock)
Maximum flow rate: 15 mL / min Maximum pressure: 40 kPa
Rated voltage: 3V
Rated current: 50 mA
Mass: 3g
The type of the gear pump is the same as that of the gear pump 5B of the second embodiment.

(Used tube)
A nasal tube (8Fr-120 cm) was connected to the output side (downstream side) of the gear pump.

(Used liquid food)
In Example 1 and Comparative Example 1, MMP (Mermed Plus) (viscosity: 35 mPa · s) (manufactured by Terumo Corporation) was used.

  In Example 2 and Comparative Example 2, MM (Mermed) (viscosity: 120 mPa · s) (manufactured by Terumo Corporation) was used.

  In Example 3 and Comparative Example 3, F2 light (viscosity: 2000 mPa · s) (manufactured by Terumo Corporation) was used.

In Example 4 and Comparative Example 4, PGSA (PG Soft Ace) (viscosity: 20000 mPa · s) (manufactured by Terumo Corporation) was used.
The amount of liquid food in each liquid food bag is 300 g.

(Experimental result)
Example 1 (viscosity: 35 mPa · s): 30 minutes Comparative example 1 (viscosity: 35 mPa · s): 68 minutes Example 2 (viscosity: 120 mPa · s): 40 minutes Comparative example 2 (viscosity: 120 mPa · s): 120 minutes Example 3 (viscosity: 2000 mPa · s): 68 minutes Comparative example 3 (viscosity: 2000 mPa · s): no liquid food is discharged Example 4 (viscosity: 20000 mPa · s): 320 minutes Comparative example 4 (viscosity: 20000 mPa · s): Liquid food is not discharged

  As can be seen from the above experimental results, in the embodiment, by providing the gear pump, the discharge time is significantly shortened. Moreover, in an Example, the highly viscous liquid food which cannot be discharged | emitted in a comparative example can be discharged | emitted.

  From the above experimental results, it can be seen that in the present invention (Example), the higher the viscosity of the liquid food, the higher the effect, and particularly the higher the liquid food viscosity of 2000 mPa · s.

<Experiment 2>
The same experiment as Experiment 1 was performed by changing the gear pump to the following gear pump.

  In addition, experiments were conducted with two types of nasal tubes of 6Fr-60cm and 8Fr-120cm. Moreover, the output of the gear pump was made into two types, large and small. That is, the voltage applied to the gear pump was set to 3V and 6V, and the experiment was performed for each.

  Specifically, in Example 5, the nasal tube was “6Fr-60 cm”, and the voltage applied to the gear pump was “3 V”.

  In Example 6, the nasal tube was set to “6Fr-60 cm”, and the voltage applied to the gear pump was set to “6V”.

  In Example 7, the nasal tube was “8Fr-120 cm”, and the voltage applied to the gear pump was “3 V”.

  In Example 8, the nasal tube was “8Fr-120 cm”, and the voltage applied to the gear pump was “6 V”.

(Gear pump used in the examples)
Product Name: 6V Mini Water Pump (Roboshop Co., Ltd.)
Operating voltage: 4-12V
Operating current: 0.8A
Mass: 70g
The type of the gear pump is the same as that of the gear pump 5A of the first embodiment.

(Used liquid food)
In each of Examples 5, 6, 7, and 8, PG soft EJ400 (viscosity: 20000 mPa · s) (manufactured by Terumo Corporation) was used. The amount of liquid food in the liquid food bag is 267 g.

(Experimental result)
Example 5 (nasal tube: 6Fr-60cm, applied voltage: 3V): 40 minutes Example 6 (nasal tube: 6Fr-60cm, applied voltage: 6V): 14 minutes Example 7 (nasal tube: 8Fr- 120 cm, applied voltage: 3 V): 23 minutes Example 8 (nasal tube: 8 Fr-120 cm, applied voltage: 6 V): 9 minutes

  As can be seen from the above experimental results, it can be seen that in Examples 5 to 8, the discharge time is significantly shortened compared to Example 4 described above in which the viscosity of the liquid food is 20000 mPa · s.

  Specifically, in Example 7, where the nasal tube conditions (8 Fr-120 cm) are the same as in Example 4, the discharge time is 23 minutes. When this 23 minutes is converted into the time required to discharge 300 g of liquid food, it is about 25 minutes, and in Example 7, it can be seen that the discharge time is greatly reduced.

  Moreover, in Example 8, where the nasal tube conditions (8 Fr-120 cm) are the same as those in Example 4, the discharge time is 9 minutes. When this 9 minutes is converted into the time required to discharge 300 g of liquid food, it is about 10 minutes, and in Example 8, it can be seen that the discharge time is greatly reduced.

  As mentioned above, although the liquid food administration system of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, Each part which comprises a liquid food administration system exhibits the same function. It can be replaced with any configuration obtained. Moreover, arbitrary components may be added.

  Further, the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  Moreover, the case where at least one of a liquid food bag and a syringe is not included in the components of the liquid food administration system is also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Liquid food administration system 2 Liquid food bag 3 Syringe 4 Three-way cock 5A, 5B Gear pump 6A, 6B Motor 7A, 7B Pump main body 8B Reducer 10 Liquid food line 11 Control part 12 Operation part 13 Display part 14 Storage part 41-43 Port 71A, 71B, 81B Housing 72A, 72B Input port 73A, 73B Output port 74A, 74B, 75A, 75B, 82B, 83B, 85B, 86B Gear 84B, 87B Support plate 91-94 Tube

Claims (8)

A liquid food line through which a liquid food having a viscosity of 30 to 50,000 mPa · s flows;
A liquid food administration system comprising a gear pump provided in the middle of the liquid food line and for flowing the liquid food.   The liquid food administration system according to claim 1, wherein a liquid food bag storing the liquid food is connectable upstream of the gear pump of the liquid food line.   The liquid food administration system according to claim 1, wherein a multi-way stopcock is provided upstream of the gear pump of the liquid food line. The gear pump can change its output,
A control unit for controlling the driving of the gear pump;
The liquid food administration system according to any one of claims 1 to 3, further comprising an operation unit that performs an operation of adjusting an output of the gear pump.   The liquid food administration system according to claim 4, wherein the control unit stops the gear pump when the gear pump is driven for a predetermined time. The gear pump includes a driving force supply source that supplies a driving force;
A pump body that operates with the driving force and flows the liquid food;
The pump body has a pair of gears that mesh with each other and rotate in opposite directions;
The liquid food administration system according to any one of claims 1 to 5, wherein the liquid food is pushed out by the pair of gears when the pair of gears is rotated by the driving force.   The liquid food administration system according to claim 6, wherein the gear pump has a speed reducer between the driving force supply source and the pump body.   The liquid diet administration system according to claim 7, wherein the speed reducer has a planetary gear mechanism.

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