JP2009112663A - Nutrient-feeding set via tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nutrient-feeding set via a tube by which a semisolid nutrient can be smoothly passed through the tube. <P>SOLUTION: The nutrient-feeding set 1 via a tube comprises: a first bag 2a; a semisolid nutrient Q1 which is packed in the first bag 2a; a second bag 2b; a lubricant Q2 which is packed in the second bag 2b and facilitates a flow of the nutrient Q1 when it is discharged from the first bag 2a; and a connector 3 having a first connection part 73 which is connected to the first bag 2a, a first flow passage 74 which communicates with the first bag 2a while the first connection part 73 is connected to the first bag 2a, a second connection part 62 which is connected to the second bag 2b, a second flow passage 63 which communicates with the second bag 2b while the second connection part 62 is connected to the second bag 2b. The nutrient Q1 joins the lubricant Q2 which has passed through the second flow passage 63 when discharged from the connector through the first flow passage 74. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tube feeding agent administration set.

  Traditionally, tube feeding has been used for nutritional supplementation when ingestion of food is impossible or insufficient, for resting the affected area after gastrointestinal surgery, or for breastfeeding or medication for newborns or infants who cannot suck or swallow It may be done. With tube feeding, a tube (for example, a catheter) connected to a nutrient bag containing a nutrient is inserted from the nasal cavity, oral cavity, etc. to the stomach, duodenum, etc., and liquid nutrient is injected through the tube. That means. As a medical instrument for performing tube feeding, one having a syringe filled with a tube feeding agent and a tube connected to the mouth of the syringe is known (for example, see Patent Document 1).

By the way, in recent years, some nutrients to be administered are semi-solid (for example, the viscosity is 1000 to 50000 cp at room temperature). This semi-solid nutrient has, for example, the following advantages over the liquid nutrient.
・ Prevents or suppresses the occurrence of diarrhea in those who have been given nutrients.
・ Gastroesophageal reflux of nutrients in vivo can be prevented.
・ The administration time of nutrients can be shortened.

  In the medical device described in Patent Document 1, even when a semi-solid nutrient is filled in a syringe and the nutrient is administered by pressing the plunger of the syringe, the nutrient is semi-solid. Therefore, a relatively large pressure loss occurs particularly in the tube. For this reason, passage of the nutrient in the tube is hindered, the nutrient is not sufficiently administered, and the nutrient administration time is wasted.

JP 2003-201230 A

  An object of the present invention is to provide a tube feeding agent administration set in which a semi-solid preparation passes smoothly through a tube.

Such an object is achieved by the present inventions (1) to (9) below.
(1) a first container forming a first storage space therein;
Stored in the first storage space, and semi-solid form of the agent;
A second container forming a second storage space therein;
An auxiliary agent stored in the second storage space and promoting the flow of the agent when the agent is discharged from the first storage space;
A first connection portion connected to the first container, a first flow path communicating with the first storage space in a state where the first connection portion is connected to the first container; A second connection portion connected to the second container, a second flow path communicating with the second storage space in a state where the second connection portion is connected to the second container, A connector having a third connecting portion connected to the tube,
When the agent passes through the first flow path and is discharged from the third connection portion, and the auxiliary agent passes through the second flow path and is discharged from the third connection portion. In addition, at the end of the third connecting portion, the agent passes through the central part, and the agent and the assistant join together while the auxiliary agent passes so as to surround the agent. Characteristic tube nutrient administration set.

  (2) The connector has a double pipe structure composed of an outer pipe and an inner pipe at least in the third connection portion, and the inner pipe functions as the first flow path, The tube feeding agent administration set according to (1), wherein a gap between an inner tube and the outer tube functions as the second flow path.

  (3) The tube feeding agent administration set according to (1) or (2), wherein each of the first container and the second container has a bag.

  (4) The tube feeding agent administration set according to (3), wherein one of the two bags is located inside the other bag.

  (5) The tube feeding agent administration set according to (3) or (4), wherein the edges of the two bags are connected to each other via a flexible connecting part.

  (6) The tube feeding agent administration set according to any one of (3) to (5), wherein when the bags are compressed, the bags are stacked and compressed.

  (7) having a bag provided with a partition wall that divides an internal space into two spaces, wherein the partitioned one space of the bag functions as the first storage space, and the other space is the first space; The tube feeding agent administration set according to any one of the above (1) to (6), which functions as two storage spaces.

  (8) The tube feeding agent administration set according to any one of (1) to (7), wherein the viscosity of the agent is 1000 cp or more at room temperature.

  (9) The tube feeding agent administration set according to any one of (1) to (8), wherein the auxiliary agent has a viscosity lower than that of the present agent at room temperature.

Moreover, the present agent contains calcium ions,
The auxiliary agent preferably has a function of gelling the agent by binding to the calcium ions.

The auxiliary agent preferably contains pectin or carrageenan.
The agent contains potassium ions,
The auxiliary agent preferably has a function of gelling the agent by binding to the potassium ions.

The auxiliary agent preferably contains carrageenan.
The connector preferably has a gap distance maintaining means for maintaining the gap distance of the gap.

  The gap distance maintaining means is formed to protrude from the outer peripheral surface of the inner tube and is configured to protrude from the inner peripheral surface of the outer tube, or is configured to protrude from the inner peripheral surface of the outer tube. It is preferable that the protrusion is in contact with the outer peripheral surface of the inner tube.

  It is preferable that the first channel and the second channel do not merge in the connector.

  The first flow path and the second flow path are preferably joined at the third connection portion.

  According to the present invention, the semisolid agent flows down together with the auxiliary agent when passing through the tube connected to the third connecting portion. With this auxiliary agent, the flow resistance (pressure loss) in the tube of this agent is suppressed, and the passage thereof is smoothly performed (promoted). Thereby, quick and reliable administration of a nutrient can be performed.

  In addition, when the connector has a double pipe structure, when this agent and the auxiliary agent merge, the auxiliary agent flows outside of this agent. Thereby, in the edge part of a 3rd connection part, an adjuvant surrounds this agent and, therefore, passage of this agent is further accelerated | stimulated.

  Hereinafter, the tube nutrient supply set of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

<First Embodiment>
1 is a plan view showing a first embodiment of a tube feeding agent administration set according to the present invention, FIG. 2 is a longitudinal sectional view of a connector of the tube feeding agent administration set shown in FIG. 1, and FIG. FIG. 4 is an enlarged cross-sectional view of a region [A] surrounded by an alternate long and short dash line in FIG. 1. In the following, for convenience of explanation, the upper side in FIGS. 1 and 2 (the same applies to FIGS. 5 and 8) is referred to as “upper” or “upper” and the lower side is referred to as “lower” or “lower”. In addition, the left side in FIGS. 1 and 2 (the same applies to FIGS. 5, 6, 8, and 10) is referred to as “base end”, and the right side is referred to as “tip”.

  The tube feeding agent administration set 1 shown in FIG. 1 is a medical instrument used when performing tube feeding. The “tube” includes, for example, enteral and transgastric.

  This tube nutrient supply set 1 includes a hollow long first bag (nutrient bag (first container)) 2a and a hollow long second bag (lubricant bag (second container). Container)) 2b and a connector 3 connected to the first bag 2a and the second bag 2b. In addition, a tube feeding agent (this agent (hereinafter simply referred to as “nutrient”)) Q1 is stored in a liquid-tight manner in the first bag 2a, and in the second bag 2b, Lubricant (auxiliary agent) Q2 is stored in advance. Further, the connector 3 has a proximal end portion 131 of a tube (intubation tube (flexible tube)) 13 that is previously placed in the living body, that is, inserted from the nasal cavity, oral cavity, etc. to the stomach, duodenum, etc. It is connected.

  Such a tube nutrient administration set 1 is used in the state shown in FIG. 1 (tube feeding is performed). Then, after tube feeding is performed, the first bag 2a and the second bag 2b (tube feeding agent administration set 1) are removed and discarded.

  Since the first bag 2a and the second bag 2b are substantially the same in configuration except that they are different from each other and different in size, the first bag 2a will be representatively described below. explain. In the present embodiment, the first bag 2a is larger in size than the second bag 2b (see FIG. 1).

  The first bag 2 a has a bag body (bag) 21 in which the nutrient Q 1 can be stored, and a tubular discharge port forming member 5 installed in the bag body 21.

  The bag body 21 has a bag shape made of a soft material (for example, a resin material), and is a container in which the nutrient Q1 is previously stored and sealed. Thereby, when the bag main body 21 is pressed and the nutrient Q1 in the said bag main body 21 is discharged | emitted (it pushes out), the operation can be performed easily. In addition, the discharge amount of the nutrient Q1 can be adjusted by the hardness of the bag body 21 and the magnitude of the pressing force against the bag body 21.

  The bag body 21 is preferably formed into a bag shape by stacking flexible resin sheet materials and sealing the outer edges (for example, heat fusion, high frequency fusion or the like or adhesion). A first storage space 23a for storing the nutrient Q1, which is the content of the first bag 2a, is formed inside the periphery surrounded by the seal portion 22.

  Examples of the constituent material of the bag body 21 include polyethylene, polypropylene, polybutadiene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and soft poly. Examples thereof include various thermoplastic elastomers such as vinyl chloride, polyvinylidene chloride, silicone, polyurethane, and polyamide elastomer, or those arbitrarily combined (blend resin, polymer alloy, laminate, etc.).

  Furthermore, in order to prevent deterioration and decomposition of ingredients in the nutrient Q1 with time and maintain quality, an aluminum foil or the like is provided on the surface of the sheet material composed of the above materials to provide oxygen barrier properties, light shielding properties, etc. It is also possible to form a thin film such as a vapor-deposited film made of an oxide such as titanium oxide, aluminum oxide, or silicon oxide for further laminating these films or for imparting oxygen barrier properties. Moreover, in order to improve the strength of the bag body 21 and to ensure drop resistance and retort resistance, the sheet material may be a laminate of a plurality of layers (reinforcing layers) made of the same or different materials.

  A tubular discharge port forming member 5 is attached to the front end of the bag body 21, and in the configuration of FIG. 1, the bag body 21 is provided at a substantially central portion in the width direction (vertical direction in FIG. 1). The discharge port forming member 5 functions as a discharge port for discharging the nutrient Q1 in the bag body 21.

  Most of the discharge port forming member 5 protrudes from the bag main body 21, and the opening on the base end side opens toward the first storage space 23 a of the bag main body 21. A male screw 515 is formed on the outer periphery of the portion of the discharge port forming member 5 protruding from the bag body 21. A female screw 31 of a first connecting portion 73 of the connector 3 described later is screwed into the male screw 515. Thereby, the discharge port forming member 5 and the connector 3 are connected in a liquid-tight manner (see FIG. 1).

  The discharge port forming member 5 is preferably made of a hard material. Examples of the hard material include rigid polyvinyl chloride, polyethylene, polypropylene, polyolefin such as polybutadiene, polystyrene, poly- (4-methylpentene-1), polycarbonate, ABS resin, acrylic resin, polymethyl methacrylate (PMMA). , Polyacetal, polyarylate, polyacrylonitrile, polyvinylidene fluoride, ionomer, acrylonitrile-butadiene-styrene copolymer, polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PTB), butadiene-styrene copolymer, aromatic Or various resin, such as aliphatic polyamide, or what combined these arbitrarily is mentioned.

  Nutrient Q1 is stored (filled) in the first storage space 23a of the first bag 2a. Examples of the nutrient Q1 include semi-digested nutrients, digested nutrients, component nutrients (ED), liquid foods, and mixer foods. Further, the nutrient Q1 is semi-solid, and the viscosity thereof is not particularly limited. For example, it is preferably adjusted (set) to 1000 cp or more at room temperature, and adjusted to 1000 to 50000 cp. More preferably. A method for adjusting the viscosity is not particularly limited, and examples thereof include a method of adjusting the amount of water, amount of gelling agent, and amount of thickener in the nutrient Q1.

  The viscosity can be measured using a B-type viscometer (for example, “BL type” manufactured by Toki Sangyo Co., Ltd.).

Since the nutrient Q1 is in a semi-solid state, there are the following advantages compared to when the nutrient Q1 is liquid, for example.
-Preventing or suppressing the occurrence of diarrhea in those who have been administered the nutrient Q1.
-Gastroesophageal reflux of the nutrient Q1 in vivo can be prevented.
-The administration time of the nutrient Q1 can be shortened.

  In addition, the lubricant Q2 is stored (filled) in the second storage space 23b of the second bag 2b. When the nutrient Q1 is discharged from the first bag 2a and passes through the tube 13, the lubricant Q2 merges with the nutrient Q1 and flows (passes) in the tube 13 of the nutrient Q1. (See FIGS. 3 and 4).

  Such lubricant Q2 is not particularly limited, and examples thereof include gel-like ones. Examples of such lubricants include gelling agents containing gelatin, pectin, agar, carrageenan and the like. It is done.

  Since the nutrient Q1 is semi-solid as described above, when it passes through the tube 13 alone (only by the nutrient Q1), its flow path resistance (pressure loss) becomes relatively large. For this reason, the nutrient Q1 alone does not pass through the tube 13 smoothly. However, as shown in FIGS. 3 and 4, in the tube feeding agent administration set 1, when the semi-solid nutrient Q 1 passes through the tube 13, the outer periphery thereof is surrounded by the gel lubricant Q 2. . Thereby, nutrient Q1 flows down with lubricant Q2, flow resistance in tube 13 of nutrient Q1 is controlled, and the passage is performed smoothly (promoted). Therefore, quick administration of nutrient Q1 is attained.

  The viscosity of the lubricant Q2 is smaller than the viscosity of the nutrient Q1. Thereby, a lubrication function is exhibited more notably. The viscosity of the lubricant Q2 is not particularly limited, but is preferably 1 to 10000 cp at room temperature, and more preferably 1 to 1000 cp.

  Note that the lubricant Q2 is not limited to one that is already in the form of a gel (hereinafter referred to as “already-gel”) while being stored in the second bag 2b. Q1 contains (contained in nutrient Q1) that binds to the predetermined ions (gelator) to be described later (gelator), water (eg, physiological saline, distilled water) and edible oil It may be. Hereinafter, the case where the lubricant Q2 is gelated will be described.

  For example, when the nutrient Q1 contains calcium ions, the lubricant Q2 preferably contains pectin or carrageenan. Thereby, when nutrient Q1 and lubricant Q2 merge in tube 13, pectin (similar to carrageenan) in lubricant Q2 binds to calcium ions in nutrient Q1 near these interfaces. This combined product (nutrient Q1) gels and acts (functions) in the same manner as the aforementioned gel-like lubricant Q2.

  Moreover, when the nutrient Q1 contains potassium ions, the lubricant Q2 preferably contains carrageenan. Thereby, when the nutrient Q1 and the lubricant Q2 merge in the tube 13, the carrageenan in the lubricant Q2 is combined with the potassium ions in the nutrient Q1 in the vicinity of these interfaces. This combined product (nutrient Q1) gels and acts (functions) in the same manner as the aforementioned gel-like lubricant Q2.

Next, the connector 3 will be described.
As shown in FIG. 2, the connector 3 has a double tube structure including an outer tube 6 and an inner tube 7 inserted into the outer tube 6. In this connector 3, a female screw 61 formed on the inner peripheral portion of the base end of the outer tube 6 and a male screw 71 formed in the middle of the outer peripheral portion of the inner tube 7 are screwed together, so that the outer tube 6 The inner pipe 7 is concentrically connected (connected). The connector 3 is not limited to one in which the outer tube 6 and the inner tube 7 are threadedly connected, and for example, the outer tube 6 and the inner tube 7 may be integrally formed.

  A female screw 732 is formed on the inner peripheral portion of the proximal end of the inner tube 7. As shown in FIG. 1, the male screw 515 of the discharge port forming member 5 of the first bag 2a is screwed into the female screw 732. As a result, the first bag 2 a can be connected to the connector 3. Thus, the base end portion of the inner tube 7 functions as the first connection portion 73 to which the first bag 2a is connected.

  A ring-shaped rib 733 provided concentrically with the first connection portion 73 is formed on the inner side of the first connection portion 73. When the discharge port forming member 5 of the first bag 2 a is connected to the first connection portion 73, the distal end portion of the discharge port forming member 5 is sandwiched between the first connection portion 73 and the rib 733. The Thereby, it can prevent reliably that the screwing of the 1st connection part 73 and the discharge port formation member 5 loosens unintentionally.

  A plurality of ribs 731 formed along the longitudinal direction of the inner tube 7 are arranged on the outer peripheral portion of the first connecting portion 73 along the circumferential direction. Accordingly, when the first connection portion 73 is gripped and the first connection portion 73 and the discharge port forming member 5 of the first bag 2a are screwed and connected, the first connection portion 73 is connected. Since the torque can be applied with certainty, the screwing operation can be easily performed.

  Further, the inner side of the inner tube 7 functions as a first flow path 74 through which the nutrient Q1 in the first bag 2a connected to the first connecting portion 73 (inner tube 7) passes (see FIG. 2). ). Thereby, nutrient Q1 is discharged from the 1st bag 2a, and goes to tube 13.

  In the middle of the outer tube 6 in the longitudinal direction, a second connection portion 62 to which the discharge port forming member 5 of the second bag 2b is connected is formed in a tubular shape. On the inner peripheral portion of the second connection portion 62, a female screw 621 that is screwed with the male screw 515 of the discharge port forming member 5 of the second bag 2b is formed. Thereby, the 2nd connection part 62 and the discharge port formation member 5 of the 2nd bag 2b can be connected fluid-tightly.

  A ring-shaped rib 622 provided concentrically with the second connecting portion 62 is formed on the inner side of the second connecting portion 62. When the discharge port forming member 5 of the second bag 2 b is connected to the second connection portion 62, the distal end portion of the discharge port forming member 5 is sandwiched between the second connection portion 62 and the rib 622. The Thereby, it can prevent reliably that the screwing of the 2nd connection part 62 and the discharge port formation member 5 loosens unintentionally.

  Further, a gap is formed between the outer tube 6 and the inner tube 7, and this gap is a lubricant in the second bag 2b connected to the second connecting portion 62 (outer tube 6). It functions as a second flow path 63 through which Q2 passes (see FIG. 2). As a result, the lubricant Q2 is discharged from the second bag 2b and travels toward the tube 13.

  The first flow path 74 and the second flow path 63 are formed independently, that is, do not merge in the connector 3. Thereby, for example, when the nutrient Q1 and the lubricant Q2 come into contact with each other and react, even if the nutrient Q1 and the lubricant Q2 remain in the connector 3, the reaction can be reliably prevented.

  Further, the base end portion 131 of the tube 13 is liquid-tightly connected to the outer peripheral portion of the distal end of the outer tube 6 by fitting. As a result, the first storage space 23a of the first bag 2a communicates with the inside of the tube 13 via the first flow path 74, and the second bag 2b passes through the second flow path 63. The second storage space 23b communicates with the inside of the tube 13. Therefore, the nutrient Q1 can be administered aseptically. In the connector 3, the distal end portion of the outer tube 6 functions as a tube connection portion (third connection portion) to which the tube 13 is connected.

  Although it does not specifically limit as a constituent material of the connector 3, For example, the hard material similar to having mentioned by description about the discharge port formation member 5 can be used. Further, among these materials, those having durability against various sterilizations such as EOG sterilization (ethylene oxide gas sterilization), gamma ray sterilization, electron beam sterilization, steam sterilization, and hot water sterilization are more preferable.

  In the tube feeding agent administration set 1 having such a configuration, when tube feeding is performed in a state where the tube 13 is connected (hereinafter, this state is referred to as “tube connection state”), for example, with the palm of the hand, the first The bag 2a and the second bag 2b are respectively squeezed from the rear end portion to the front end portion (on the discharge port forming member 5 side) and sequentially pressed toward the back side in FIG. At this time, the nutrient Q1 is discharged from the first bag 2a and passes through the first flow path 74, and the lubricant Q2 is discharged from the second bag 2b and flows through the second flow path 63. pass. Then, the nutrient Q1 and the lubricant Q2 merge in the tube 13. As shown in FIG. 4 (also in FIG. 3), when the nutrient Q1 and the lubricant Q2 merge, the double pipe structure (connector 3) causes the lubricant Q2 to be more than the nutrient Q1. Flowing outside. Thereby, in the front-end | tip part (end part of a 3rd connection part) of the connector 3, the nutrient Q1 passes a center part, and the lubricant Q2 passes so that the nutrient Q1 may be enclosed. Thereby, as above-mentioned, passage of the nutrient Q1 in the tube 13 is promoted (passability is improved). Therefore, the nutrient Q1 is sufficiently administered, and the administration time required to administer the nutrient Q1 can be shortened.

  In the connector 3, the average inner diameter φD of the inner pipe 7 (first flow path 74) is set larger than the average gap distance t of the gap (second flow path 63) between the outer pipe 6 and the inner pipe 7. (See FIG. 2). As a result, the thickness of the lubricant Q2 flowing out of the connector 3 and passing through the tube 13 can be made as small as possible, and therefore, the nutritional agent Q1 can be mainly administered.

Second Embodiment
FIG. 5 is a partial longitudinal sectional view showing a second embodiment of the tube feeding agent administration set of the present invention.

  Hereinafter, the second embodiment of the tube feeding set of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-described embodiment, and the description of the same matters will be omitted. .

  The present embodiment is the same as the first embodiment except that the arrangement of the first bag and the second bag is different.

  The connector 3A of the tube feeding agent administration set 1A shown in FIG. 5 is such that the middle of the second connection portion 62 is bent, that is, the second connection portion 62 has an L shape in a longitudinal sectional view. is there. As a result, the axis (center axis) of the portion closer to the female screw 621 than the bent portion 623 of the second connection portion 62 is parallel to the axis of the first connection portion 73. When the first bag 2a and the second bag 2b are connected to the connector 3A, the second bag 2b is disposed above the first bag 2a.

  In the tube feeding agent administration set 1A having such a configuration, when tube feeding is performed in a tube connection state, the first bag 2a and the second bag 2b overlap each other as described above. These bags can be pressed together, for example, with one hand in the direction of the arrow in FIG. Thereby, discharge operation with respect to nutrient Q1 and lubricant Q2 can be performed easily.

<Third Embodiment>
FIG. 6 is a longitudinal sectional view showing a third embodiment of the tube feeding agent administration set of the present invention, and FIG. 7 is a sectional view taken along the line BB in FIG.

  Hereinafter, the third embodiment of the tube-feeding agent administration set of the present invention will be described with reference to these drawings, but the description will focus on the differences from the above-described embodiment, and the description of similar matters will be omitted. To do.

  This embodiment is the same as the first embodiment except that the configuration of the connector and the arrangement of the first bag and the second bag are different.

  In the tube feeding agent administration set 1B shown in FIG. 6, the first connection portion 73 of the inner tube 7 and the second connection portion 62 of the outer tube 6 are concentrically arranged, that is, the first The first connection portion 73 is located in the second connection portion 62. Further, the discharge port forming member 5 of the first bag 2a and the second bag 2b is omitted, and the first connection portion 73 (base end portion) of the inner tube 7 of the connector 3B is inserted into the first bag 2a. The second connecting portion 62 (base end portion) of the outer tube 6 is inserted and fixed in the second bag 2b. The fixing method is not particularly limited, and examples thereof include methods such as fusion (thermal fusion, high-frequency fusion, ultrasonic fusion, etc.) and adhesion (adhesion with an adhesive or a solvent).

  Further, in the tube feeding agent administration set 1B, the first bag 2a is located in the second bag 2b. Thereby, when tube feeding is performed in a tube connection state, these bags can be pressed together in one arrow, for example, in the direction of the arrow in FIG. Thereby, discharge operation with respect to nutrient Q1 and lubricant Q2 can be performed easily. Moreover, since the internal difference between the nutrient Q1 and the lubricant Q2 becomes equal at the time of compression, the flow ratio of both agents can be made constant by the viscosity of the nutrient Q1 and the lubricant Q2 and the flow path design. it can.

  Base end portions (edge portions) of the first bag 2a and the second bag 2b are connected to each other. As a result, the positional relationship between the first bag 2a and the second bag 2b is fixed. Therefore, even when these bags are compressed together, their positional displacement is reliably prevented, and the compression force is ensured. Can be applied to both bags. Thereby, each of the nutrient Q1 and the lubricant Q2 can be reliably discharged.

  As shown in FIG. 7, in the connector 3 </ b> B, a plurality (four in the present embodiment) of ribs (projections (projections)) 761 formed along the axial direction on the outer peripheral surface 76 of the inner tube 7 are formed to project. Has been. These ribs 761 are arranged at equiangular intervals around the axis of the inner tube 7. The top portion 762 of each rib 761 abuts on the inner peripheral surface 65 of the outer tube 6. Thereby, the gap distance t of the second flow path 63 can be kept constant. Thereby, the thickness of the lubricant Q2 flowing into the tube 13 from the second flow path 63 can be made uniform. Therefore, as shown in FIG. 4, the nutrient Q1 can be reliably surrounded by the lubricant Q2, and the flow of the nutrient Q1 can be reliably promoted.

  In the connector 3B, each rib 761 can be said to be “gap distance maintaining means” that maintains the gap distance t of the second flow path 63 constant. The gap distance maintaining means is not limited to the plurality of ribs 761 formed on the outer peripheral surface 76 of the inner tube 7. For example, the gap distance maintaining unit is formed on the inner peripheral surface 65 of the outer tube 6 along the axial direction thereof. A plurality of ribs may be in contact with the outer peripheral surface 76 of the tube 7.

  In addition, a plurality of stepped portions 64 whose outer diameter changes sharply are formed on the outer peripheral portion of the outer tube 6. Thereby, when the base end portion 131 of the tube 13 is connected, each stepped portion 64 is engaged with the inner peripheral portion of the base end of the tube 13, so that the tube 13 is unintentionally detached (dropped off). It is surely prevented.

  Further, in the configuration shown in FIG. 6, the first bag 2a and the second bag 2b are located inside the second bag 2b in the configuration shown in FIG. Two bags 2b may be located inside the first bag 2a.

<Fourth embodiment>
FIG. 8: is a longitudinal cross-sectional view which shows 4th Embodiment of the tube feeding agent administration set of this invention.

  Hereinafter, the fourth embodiment of the tube-feeding agent administration set of the present invention will be described with reference to this figure, but 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 the same as the third embodiment except that the configuration of the bag for storing the nutrient and the lubricant is different.

  In the tube feeding agent administration set 1C shown in FIG. 8, the first bag 2a and the second bag 2b are omitted, and in place of them, one long body that collectively stores the nutrient agent Q1 and the lubricant Q2 is stored. A bag 2c is provided. The bag 2c is a bag made of a soft material (for example, a resin material), and is a container in which a nutrient Q1 and a lubricant Q2 are previously stored and sealed. The bag 2c is preferably formed into a bag shape by stacking flexible resin sheet materials and sealing the outer edges thereof (for example, heat fusion, high frequency fusion or the like or adhesion).

  Further, the bag 2c is sealed at the portion along the central axis in the same manner as the outer edge (seal portion 22). Thereby, the partition part 26 which divides the internal space 25 of the bag 2c into two spaces is formed. In the bag 2c, one space (the upper side in FIG. 8) partitioned by the partition wall portion 26 of the bag 2c functions (uses) as a first storage space 23a (first container) for storing the nutrient Q1. On the other hand, the other (lower side in FIG. 8) space functions (can be used) as the second storage space 23b (second container) for storing the lubricant Q2. Thereby, in the unused state of tube feeding nutrient administration set 1C, these can be stored (stored) so that nutrient Q1 and lubricant Q2 may not be mixed.

  In addition, it does not specifically limit as a constituent material of the bag 2c, For example, the material which was mentioned by description about the bag main body 21 can be used.

  As shown in FIG. 8, in the connector 3C of the tube feeding nutrient administration set 1C, the first connecting portion 73 of the inner tube 7 is curved toward the first storage space 23a that stores the nutrient Q1. The second connecting portion 62 of the outer tube 6 is curved toward the second storage space 23b that stores the lubricant Q2. That is, in the connector 3C, the first connecting portion 73 of the inner tube 7 and the second connecting portion 62 of the outer tube 6 are curved in opposite directions.

  Note that the sizes of the first storage space 23a and the second storage space 23b are substantially the same in the configuration shown in FIG. 8, but are not limited thereto, and may be changed as appropriate according to the conditions of tube feeding. (One storage space is set larger than the other storage space). Examples of tube feeding conditions include the type of nutrient Q1 and lubricant Q2, and the dosage of nutrient Q1 and lubricant Q2.

<Fifth Embodiment>
FIG. 9: is a perspective view (figure which shows a use process in order) which shows 5th Embodiment of the tube feeding agent administration set of this invention.

  Hereinafter, the fifth embodiment of the tube-feeding agent administration set of the present invention will be described with reference to this figure, but the description will focus on differences from the above-described embodiment, and the description of the same matters will be omitted. .

  This embodiment is the same as the second embodiment except that the first bag and the second bag are connected.

  In the tube feeding agent administration set 1 </ b> D shown in FIG. 9, the first bag 2 a and the second bag 2 b are connected via a connecting portion 27. The portion to which the connecting portion 27 is connected is that of one of the two edges located in the width direction of the first bag 2a and the two edges located in the width direction of the second bag 2b. One of the edges. This connection part 27 is comprised with the material similar to the bag main body 21, and has flexibility. Thereby, it can be bent via the connection part 27, and the 1st bag 2a and the 2nd bag 2b overlap in that case (refer FIG.9 (b)).

  Further, the discharge port forming member 5 connected to the connector 3A of the first bag 2a (the same applies to the second bag 2b) is made of the same material as the bag body 21 and has flexibility.

  In the tube feeding agent administration set 1D having such a configuration, when tube feeding is performed in a tube connection state, first, the first bag 2a and the second bag 2b are moved from the state shown in FIG. Bend in the approaching direction (arrow direction in FIG. 9B). Thereby, the 1st bag 2a and the 2nd bag 2b overlap (refer FIG.9 (b)). Next, in a state where the bags overlap each other, the bag is pressed in the direction of the arrow in FIG. Thereby, discharge operation with respect to nutrient Q1 and lubricant Q2 can be performed easily.

  Further, in the present embodiment, when a plurality of tube-nutrient administration sets 1D are stored in, for example, a box, each tube-nutrient administration set 1D can be stored in the state shown in FIG. 9A. Thereby, the thickness as a whole of each tube feeding agent administration set 1D can be suppressed, and the accommodation to the said box becomes easy.

<Sixth Embodiment>
FIG. 10 is a longitudinal sectional view showing a connector of the tube feeding agent administration set (sixth embodiment) of the present invention.

  Hereinafter, the sixth embodiment of the tube-feeding agent administration set of the present invention will be described with reference to this figure, but 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 the same as the first embodiment except that the configuration of the connector is different.
In the connector 3C of the tube feeding agent administration set 1E shown in FIG. 10, the distal end 77 of the inner tube 7 is located on the proximal side with respect to the distal end 66 of the outer tube 6, that is, is immersed in the connector 3. . Thereby, the junction 31 where the first flow path 74 and the second flow path 63 merge with the tip of the connector 3 (the portion between the tip 77 of the inner tube 7 and the tip 77 of the inner tube 7). Is formed. Thereby, the flow-path resistance of the nutrient Q1 with a large viscosity can be reduced.

  As mentioned above, although the tube feeding agent administration set of this invention was demonstrated about embodiment of illustration, this invention is not limited to this, Each part which comprises a tube feeding agent administration set has the same function. It can be replaced with any configuration that can be exhibited. Moreover, arbitrary components may be added.

  Moreover, the tube feeding agent administration set of the present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

  For example, the connector of the first embodiment may have the same gap distance maintaining means as the connector of the third embodiment.

  Further, the inner tube of the connector of the second embodiment may be formed with a stepped portion in the same manner as the inner tube of the connector of the first embodiment.

  Further, the discharge port forming member of the first bag and the first connection portion of the connector are connected by screwing, but are not limited thereto, and may be connected by fitting, for example (second) The same applies to the connection between the discharge port forming member of the bag and the second connection portion of the connector).

Moreover, nutrients may also be included in the auxiliary agent.
In addition, the auxiliary agent passes through the tube so as to form an O shape surrounding the entire periphery of the agent in a cross-sectional view, but is not limited thereto, and the auxiliary agent is not limited to the outer periphery of the agent in a cross-sectional view. You may pass through so that it may form C shape surrounding a part.

Next, specific examples of the present invention will be described.
1. Preparation of tube feeding agent administration set (Example)
A first bag pre-filled with a nutrient having a viscosity of 20000 cp at normal temperature and a second bag pre-filled with a pectin solution having a viscosity of 550 cp at normal temperature were prepared. And the 1st bag and the 2nd bag were connected to the connector, and the tube feeding nutrient administration set shown in FIG. 1 was manufactured.

(Comparative Example 1)
A first bag pre-filled with a nutrient (including calcium ions) having a viscosity of 20000 cp at room temperature was prepared, and the first bag was connected to the first connection portion of the connector to obtain a tube nutrient An administration set was made. This tube feeding agent administration set is obtained by omitting the second bag from the tube feeding agent administration set shown in FIG.

(Comparative Example 2)
A second bag pre-filled with a pectin solution having a viscosity of 550 cp at room temperature was prepared, and the second bag was connected to the second connection portion of the connector to produce a tube feeding agent administration set. This tube feeding agent administration set is obtained by omitting the first bag from the tube feeding agent administration set shown in FIG.

2. Evaluation The fluidity was evaluated by determining the pressure loss of the tube feeding agent administration sets obtained in the examples and the comparative examples as follows.

(1) The tube 13 of the tube feeding agent administration set of Examples and Comparative Examples was removed. When the bag is subjected to weighting at a constant speed by an autograph to obtain a certain amount of bag deformation and a certain discharge amount, the weight F ₁ [N] at that time is obtained, and the bag contact area A [m ² ] From this, the bag internal pressure P ₁ [Pa] was calculated according to Equation 1.
P ₁ = F ₁ / A (Formula 1)
In addition, in the tube feeding agent administration set of an Example, the displacement was applied with the autograph in the state which accumulated two bags.

(2) Next, a gastrostomy (PEG) tube (“Bird Gastrostomy Tube 24Fr” manufactured by Medicon Inc.) 13 having an inner diameter of about 6 mm is placed on the tube 13 of the tube feeding agent administration set of Examples and Comparative Examples 1 and 2. The ones used were prepared. When the bag is subjected to weighting at a constant speed by an autograph, a certain amount of bag deformation and a constant discharge amount are obtained, the weighting F ₂ [N] at that time is obtained, and the bag internal pressure P ₂ [Pa] is expressed by the equation 2 was calculated.
P ₂ = F ₂ / A (Formula 2)

(3) The pressure loss (ΔP) of only the gastrostomy tube was determined by Equation 3.
ΔP [Pa] = P ₂ −P ₁ (Formula 3)
Incidentally, _{P 1} and _{P 2,} using the average value was carried out by three times each. The measurement environment was an air temperature of 22 degrees and a relative humidity of 60%.

  The evaluation results show that the pressure loss is 1.6 kPa in the tube feeding agent administration set of the example, and the pressure loss is 10 kPa in the tube feeding agent administration set of comparative example 1, and the tube feeding of comparative example 2 In the agent administration set, the pressure loss was 2.8 kPa. As is apparent from this evaluation result, it can be seen that the pressure loss in the tube-nutrient-administered set obtained in the example is the lowest, and therefore the fluidity of the nutrient in the catheter is the highest.

  Moreover, the tube feeding agent administration set shown to FIG.5, FIG.6, FIG.8-10 was produced, and the same evaluation was performed with respect to these tube feeding agent administration sets. As a result, the evaluation results almost the same as those of the above-described examples were obtained for each tube feeding set.

It is a top view which shows 1st Embodiment of the tube feeding agent administration set of this invention. It is a longitudinal cross-sectional view of the connector of the tube feeding agent administration set shown in FIG. FIG. 2 is an enlarged longitudinal sectional view of a region [A] surrounded by a one-dot chain line in FIG. 1. FIG. 2 is an enlarged cross-sectional view of a region [A] surrounded by an alternate long and short dash line in FIG. 1. It is a fragmentary longitudinal cross-section which shows 2nd Embodiment of the tube feeding agent administration set of this invention. It is a longitudinal cross-sectional view which shows 3rd Embodiment of the tube feeding agent administration set of this invention. It is the BB sectional view taken on the line in FIG. It is a longitudinal cross-sectional view which shows 4th Embodiment of the tube feeding agent administration set of this invention. It is a perspective view (figure which shows a use process in order) which shows 5th Embodiment of the tube feeding agent administration set of this invention. It is a longitudinal cross-sectional view which shows the connector of the tube feeding agent administration set (6th Embodiment) of this invention.

Explanation of symbols

1, 1A, 1B, 1C, 1D, 1E Tube nutrient supply set 2a First bag 2b Second bag 2c Bag 21 Bag body 22 Seal portion 23a First storage space 23b Second storage space 25 Internal space 26 Bulkhead portion 27 Connecting portion 3, 3A, 3B, 3C Connector 31 Merge portion 5 Discharge port forming member 515 Male screw 6 Outer tube 61 Female screw 62 Second connection portion 621 Female screw 622 Rib 623 Bending portion 63 Second flow Path 64 Stepped portion 65 Inner peripheral surface 66 Tip 7 Inner tube 71 Male screw 73 First connection portion 731 Rib 732 Female screw 733 Rib 74 First flow channel 76 Outer peripheral surface 761 Rib (projection (projection))
762 Top 77 Tip 13 Tube (Intubation tube (flexible tube))
131 Base end Q1 Tube feeding (nutrient (this agent))
Q2 Lubricant (auxiliary)
φD Inner diameter t Gap distance

Claims (9)

A first container forming a first storage space therein;
Stored in the first storage space, and semi-solid form of the agent;
A second container forming a second storage space therein;
An auxiliary agent stored in the second storage space and promoting the flow of the agent when the agent is discharged from the first storage space;
A first connection portion connected to the first container, a first flow path communicating with the first storage space in a state where the first connection portion is connected to the first container; A second connection portion connected to the second container, a second flow path communicating with the second storage space in a state where the second connection portion is connected to the second container, A connector having a third connecting portion connected to the tube,
When the agent passes through the first flow path and is discharged from the third connection portion, and the auxiliary agent passes through the second flow path and is discharged from the third connection portion. In addition, at the end of the third connecting portion, the agent passes through the central part, and the agent and the assistant join together while the auxiliary agent passes so as to surround the agent. Characteristic tube nutrient administration set.   The connector has a double tube structure composed of an outer tube and an inner tube at least in the third connection portion, the inner tube functions as the first flow path, and the inner tube The tube feeding agent administration set according to claim 1, wherein a gap with the outer tube functions as the second flow path.   The tube feeding agent administration set according to claim 1 or 2, wherein each of the first container and the second container has a bag.   The tube-feeding nutrient administration set according to claim 3, wherein one of the two bags is positioned inside the other bag.   The tube feeding agent administration set according to claim 3 or 4, wherein the edges of the two bags are connected to each other via a flexible connecting part.   The tube feeding agent administration set according to any one of claims 3 to 5, wherein, when each of the bags is compressed, the bags are stacked and compressed.   It has a bag provided with a partition that divides an internal space into two spaces, and the partitioned one space of the bag functions as the first storage space, and the other space is the second storage space. The tube feeding agent administration set according to any one of claims 1 to 6, which functions as a space.   The tube feeding nutrient administration set according to any one of claims 1 to 7, wherein the viscosity of the agent is 1000 cp or more at room temperature.   The tube feeding agent administration set according to any one of claims 1 to 8, wherein the auxiliary agent has a viscosity lower than that of the present agent at room temperature.

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