JP4887394B2 - Infusion tube set - Google Patents

Description

  The present invention relates to an infusion tube set.

  In a conventional infusion set (infusion device), a male luer connector is provided at an end portion (tip portion) of the infusion tube connected to a patient. Therefore, in order to secure a plurality of infusion routes, a tube on the patient side is provided with a three-way stopcock, multiple stopcocks, etc., and an infusion route can be added, that is, a state where a plurality of the infusion tubes can be connected (For example, refer to Patent Document 1).

  For example, an infusion set with a three-way stopcock installed in the middle of the infusion route is commercially available, but the number of infusion routes required varies depending on the patient and its condition, and the required number of infusion routes prepared in advance is do not know. Therefore, collect the data of many patients about the number of infusion routes used, determine the average number of use from these, and provide one or two spare ports that can be connected to the infusion tube. It is common to construct an infusion route.

  However, patients who need a spare port are often patients who are likely to experience a sudden change in condition, and most patients who receive fluid therapy do not need a spare port, but are spared for a small number of patients. It is necessary to prepare an infusion set with a port. To that end, increase the cost of the infusion set, or increase the variety of infusion sets in the hospital to increase the cost of inventory management. There is a problem of high costs.

  Further, when the number of infusion set varieties is increased, it is necessary to use different infusion sets of different varieties, and there is a drawback that the risk of mistaken usage is increased.

  In addition, when the patient's condition suddenly changes, the spare ports prepared in advance may temporarily be insufficient.

  In this case, it is necessary to stop the infusion solution once administered, close the infusion route, open the infusion route, and incorporate a three-way stopcock or the like in the middle of the infusion route. At this time, after incorporating the stopcock, the infusion is performed by sucking with a syringe to remove the air mixed in the infusion route on the patient side, and priming the infusion on the stopped side to eliminate the air pool in the infusion route. It is necessary to perform a very laborious and time-consuming work of connecting the tubes.

  In addition, the infusion route may be mistaken, or the administration rate may be mistaken when the flow rate is set again (setting of the administration rate).

  In addition, if a syringe is used to remove air from the infusion route on the patient side, the patient's blood will flow back into the catheter placed in the patient, making it easier for the blood to clot, creating a cause of blood clots. Therefore, the indwelling catheter must be replaced earlier than planned, which adversely affects the patient.

  In addition, there is a needleless connector developed to prevent needle puncture accidents by medical staff and to maintain cleanliness when connecting, but since a closed circuit is assumed, the connection location of the infusion tube in the middle of the infusion route For this reason, when there is a shortage of connection points, the tip of the infusion route where the needleless connector is installed is opened from the tip of the infusion route. Therefore, it is necessary to take a method of use that significantly obstructs the feature. In this case as well, in the method of providing a large number of spare ports in advance as described above, it is not possible to know how many spare ports should be provided, which eventually becomes insufficient. That is, the risk of cost increase, trouble and time for venting air, setting speed of administration rate, and cause of blood clot are not different from the above.

JP-A-4-354952

  An object of the present invention is to provide an infusion tube set in which an infusion line (infusion route) can be added easily and quickly.

Such an object is achieved by the present inventions (1) to ( 4 ) below.
(1) A tube constituting a flow path for infusion, a connector provided at one end of the tube, having a male connector and a female connector, and provided at the other end of the tube, containing the infusion and at least one transfusion tube and a connecting portion connected to the housing part,
Has a liquid dosing part side connector that can be connected to the male connector of the connector of the infusion tube to a patient, a transfusion tube set and a liquid dosing unit for administering an infusion,
The one end of the tube is connected to a portion different from the male connector and the female connector of the connector,
The male connector axis of the connector and the female connector axis substantially coincide,
The male connector of the connector has a shape that can be liquid-tightly connected to another female connector of the same shape as the female connector of the connector, and the female connector of the connector has the same shape as the male connector of the connector It has a shape that can be liquid-tightly connected to other male connectors,
The infusion administration unit side connector includes an infusion administration unit side male connector, an infusion administration unit side first female connector whose axis substantially coincides with the infusion administration unit side male connector, the infusion administration unit side male connector, and the infusion administration. A part side first female connector and an infusion administration part side second female connector whose axis is substantially orthogonal;
The first infusion unit side first female connector is connected to the other end side of the tube having a connection part connected to a storage part different from the storage part on one end side,
When the male connector of the infusion tube and the infusion administration side second female connector of the infusion administration unit are connected, the connector of the infusion tube farthest from the infusion administration unit side connector of the infusion administration unit the infusion tube set, wherein the pre Kimesu connector of the connector is always present as the connection port.

(2) The connector has a flow path switching function for switching a flow path so as to select a communication pattern between the lumen of the tube, the lumen of the male connector, and the lumen of the female connector ( The infusion tube set according to 1).

( 3 ) The infusion tube set according to (1) or (2) , wherein the infusion administration unit includes a sterilization filter provided on a downstream side of the infusion administration unit side connector .

( 4 ) The infusion tube set according to (3) , wherein the infusion administration unit has a mixed injection port on a downstream side of the sterilization filter.

  According to the present invention, an infusion line (infusion route) can be easily and quickly and reliably added.

It is a top view which shows 1st Embodiment of the infusion tube set of this invention. It is a top view which shows the state which connected one infusion tube of the infusion tube set shown in FIG. It is a top view which shows the state which connected each infusion tube of the infusion tube set shown in FIG. It is a top view which shows the modification in 1st Embodiment of the infusion tube set of this invention. It is a top view which shows other embodiment of an infusion tube. It is a top view which shows other embodiment of an infusion tube. It is a top view which shows 2nd Embodiment of the infusion tube set of this invention. It is a top view which shows the state which connected one infusion tube of the infusion tube set shown in FIG. It is a top view which shows the state which connected each infusion tube of the infusion tube set shown in FIG.

  Hereinafter, an infusion tube set of the present invention is explained in detail based on a suitable embodiment shown in an accompanying drawing.

  FIG. 1 is a plan view showing a first embodiment of the infusion tube set of the present invention, FIG. 2 is a plan view showing a state where one infusion tube of the infusion tube set shown in FIG. 1 is connected, and FIG. It is a top view which shows the state which connected each infusion tube of the infusion tube set shown in 1. FIG.

  For convenience of explanation, in FIGS. 1 to 3, the lower side in the figure is referred to as a “tip” and the upper side is referred to as a “base end”.

  An infusion tube set (infusion set) 1 shown in these drawings is a device (set) for injecting (administering) an infusion into a living body (patient).

  Examples of the infusion include all liquids that can be administered to a living body, such as drug solutions, correction electrolyte solutions, and physiological saline.

  The type of drug in the drug solution is not particularly limited. For example, sedative, intravenous anesthetic, anesthetic analgesic, local anesthetic, non-depolarizing muscle relaxant, pressor, antihypertensive, coronary vasodilator Any of drugs, diuretics, antiarrhythmic drugs, bronchodilators, hemostatic agents, vitamins, antibiotics, fat emulsions and the like may be used.

  As shown in FIG. 1, an infusion tube set 1 includes an infusion administration unit 2 that administers an infusion to a patient, and a plurality of infusion tubes (two infusion tubes 3a and 3b in the present embodiment). Yes. Hereinafter, each of these components will be sequentially described.

  The infusion administration unit 2 includes an indwelling needle or catheter (in the present embodiment, the indwelling needle 21) placed in the blood vessel 110 of the patient and a proximal end portion of the indwelling needle or catheter (in the present embodiment, the indwelling needle 21). It has the infusion solution administration part side connector 22 connected.

  The constituent material of the indwelling needle 21 (or catheter) is preferably a flexible polymer material, and examples thereof include polyolefins such as polyethylene and polypropylene, and thermoplastic resins such as polyester and polyurethane.

  A tube (not shown) is provided between the indwelling needle 21 (or catheter) and the infusion administration unit side connector 22, and the indwelling needle 21 (or catheter) and the infusion administration unit side connector 22 are connected via this tube. May be. In this case, the infusion administration unit side connector 22 may be provided at the end of the tube, or may be provided in the middle of the tube.

  The infusion administration unit side connector 22 is not particularly limited as long as it has a female connector or a male connector that can be connected to the male connector 323 or the female connector 322 of the connector 32 of the infusion tubes 3a and 3b described later. In this embodiment, a three-way cock is used.

  The infusion administration part side connector 22 has two female connectors 221, 222, a male connector 223, and an operation lever (operation part) 224. By the operation lever 224, the inner cavity of the female connector 221; The communication pattern between the inner cavity of the female connector 222 and the inner cavity of the male connector 223 can be selected (has a channel switching function for switching channels).

  That is, the infusion administration unit side connector 22 has four positions including a position of the female connector 221, a position of the female connector 222, a position of the male connector 223, and a position without any connector (position on the left side in FIG. 1). The operation lever 224 can be moved. When the operation lever 224 is moved to the position of the female connector 221, the inner cavity of the female connector 222 and the inner cavity of the male connector 223 communicate with each other. When moved to the position of the female connector 222, the lumen of the female connector 221 and the lumen of the male connector 223 communicate with each other, and when the operating lever 224 is moved to the position of the male connector 223, the lumen of the female connector 221 and the female connector 223 are connected. When the lumen of the connector 222 communicates and the operating lever 224 is moved to a position where there is no connector, the lumen of the female connector 221 and the female connector 222 All with the lumen of the lumen and the male connector 223 are configured to communicate.

  The axis of the male connector 223 and the axis of the female connector 222 are substantially coincident with each other, and the axis of the female connector 221 is substantially orthogonal to these axes. That is, the male connector 223 and the female connector 222 are directed in opposite directions, and the female connector 221 is directed in a direction substantially perpendicular to the male connector 223 and the female connector 222.

  The female connectors 221 and 222 have shapes that can be liquid-tightly connected to the male connector 323 of the connector 32 of the infusion tubes 3a and 3b described later.

  In this embodiment, the male connector 323 of the connector 32 of the infusion tubes 3a and 3b described later is connected to the infusion administration unit side connector 22, but for example, the infusion administration unit side connector 22 is connected to the infusion administration unit side connector 22. On the other hand, the female connector 322 of the connector 32 of the infusion tubes 3a and 3b may be connected, and the male connector 323 and the female connector of the connector 32 of the infusion tubes 3a and 3b are connected to the infusion administration section side connector 22. Any of the connectors 322 may be connected.

  In the case where the female connector 322 of the connector 32 of the infusion tube 3a, 3b is connected to the infusion administration unit side connector 22, for example, the female connectors 221 and 222 of the infusion administration unit side connector 22 are changed to male connectors. The shape is such that it can be fluid-tightly connected to the female connector 322 of the connector 32 of the infusion tube 3a, 3b.

  In the case where both the male connector 323 and the female connector 322 of the connector 32 of the infusion tubes 3a and 3b can be connected to the infusion administration unit side connector 22, for example, the female of the infusion administration unit side connector 22 Either one of the connectors 221 and 222 is changed to a male connector, and the shape thereof is a shape that can be liquid-tightly connected to the female connector 322 of the connector 32 of the infusion tubes 3a and 3b.

  The indwelling needle 21 has an outlet port 211 at its proximal end, and a male connector 223 of the infusion administration unit side connector 22 is liquid-tightly connected to the outlet port 211.

  Next, the infusion tubes 3a and 3b will be described. Since the configurations of the infusion tube 3a and the infusion tube 3b are the same, one of the infusion tubes 3a will be described as a representative.

  The infusion tube 3a has flexibility (flexibility), and includes a tube 31 constituting a flow path of the infusion solution, a connector (branch pipe) 32 provided at one end (tip portion) of the tube 31, As a connecting portion provided on the other side of the tube 31 (in the present embodiment, the other end portion (base end portion)) and connected to the side of the infusion bag (infusion container) 4 (storage portion) in which the infusion solution is stored, And a bottle needle 35 having a sharp needle tip.

  Further, a roller clamp (roller type clamp) 33 and a drip tube 34 are provided in the middle of the tube 31 as flow rate adjusting means for adjusting the flow rate of the infusion.

  A predetermined infusion solution is stored in the infusion bag 4. When the bottle needle 35 penetrates (punctures) a stopper (rubber stopper) of the infusion bag 4, the infusion bag 4 and the infusion tube 3 a are inserted through the bottle needle 35. And the infusion solution can be supplied from the infusion bag 4 to the infusion tube 3a side.

  The drip tube 34 is installed in the vicinity of the bottle needle 35. With the drip tube 34, the flow rate of the infusion can be visually confirmed.

The roller clamp 33 is installed between the connector 32 and the drip tube 34.
The roller clamp 33 is composed of a clamp main body 331 and a roller (operation unit) 332 installed so as to be movable with respect to the clamp main body 331, and at a predetermined angle between the outer surface of the roller 332 and the clamp main body 331. By sandwiching the tube 31 between the inclined bottom surface (inclined surface) and moving the roller 332 relative to the clamp body 331, the degree of sandwiching the tube 31 changes, thereby adjusting the infusion flow rate. It has become.

  That is, when the roller 332 is moved in a predetermined direction, the degree of sandwiching the tube 31 increases, and the infusion flow rate decreases. And if it moves to the last, the lumen | bore of the tube 31 will be obstruct | occluded and infusion will not flow.

  On the other hand, when the roller 332 is moved in the opposite direction, the degree of pinching the tube 31 is reduced and the flow rate of the infusion is increased. And if it moves to the last, the lumen | bore of the tube 31 will be fully opened and the flow volume of infusion will become the maximum.

  The connector 32 is not particularly limited as long as it has a male connector and a female connector. In this embodiment, a three-way cock is used.

  The connector 32 includes two female connectors 321 and 322, a male connector 323, and an operation lever (operation unit) 324, and the operation lever 324 allows the internal cavity of the female connector 321 and the female connector 322 to be connected. A communication pattern between the lumen and the lumen of the male connector 323 can be selected (has a channel switching function for switching channels).

  That is, the connector 32 is provided with four operation levers at the four positions of the position of the female connector 321, the position of the female connector 322, the position of the male connector 323, and the position without any connector (the lower position in FIG. 1). When the operation lever 324 is moved to the position of the female connector 321, the lumen of the female connector 322 communicates with the lumen of the male connector 323, and the operation lever 324 is connected to the female connector 322. When the operation lever 324 is moved to the position of the male connector 323, the lumen of the female connector 321 and the female connector 322 are connected to each other. When the lumen communicates and the operating lever 324 is moved to a position without any connector, the lumen of the female connector 321, the lumen of the female connector 322, and the male connector All with the lumen of the motor 323 is configured to communicate.

  Further, the axis of the male connector 323 and the axis of the female connector 322 substantially coincide with each other, and the axis of the female connector 321 is substantially orthogonal to these axes. That is, the male connector 323 and the female connector 322 face in opposite directions, and the female connector 321 faces in a direction substantially perpendicular to the male connector 323 and the female connector 322.

  A male connector (not shown) is provided at the distal end of the tube 31, and this male connector is liquid-tightly connected to the female connector 321 of the connector 32. Note that the distal end portion of the tube 31 may be directly joined to the female connector 321.

  Here, the male connector 323 of the connector 32 has a shape that can be liquid-tightly connected to another female connector having the same shape as the female connector 322.

  Thereby, the male connector 323 of the connector 32 of the infusion tube 3a can be liquid-tightly connected to the female connector of the connector of another infusion tube (for example, the female connector 322 of the connector 32 of the infusion tube 3b).

  The female connector 322 of the connector 32 has a shape that can be liquid-tightly connected to another male connector having the same shape as the male connector 323.

  Thereby, the male connector of the connector of another infusion tube (for example, the male connector 323 of the connector 32 of the infusion tube 3b) can be liquid-tightly connected to the female connector 322 of the connector 32 of the infusion tube 3a.

  In this way, the connector 32 of any infusion tube can be connected to the connector 32 of another infusion tube (any number of connectors 32 can be connected). That is, for example, the infusion tube 3b connector 32 is connected to the connector 32 of the infusion tube 3a, the connector 32 of another infusion tube is connected to the connector 32 of the infusion tube 3b, and so on. The connector 32 can be connected.

  In this embodiment, the connector 32 is a three-way cock. However, in the present invention, the connector 32 is not limited to this as long as it has a male connector and a female connector. For example, a needleless having a male connector and a female connector is used. The connector may not have a function of switching the flow path.

  Examples of the constituent material of the tube 31 include soft polyvinyl chloride, ethylene-vinyl acetate copolymer, polybutadiene, and the like, or materials mainly composed of these.

Next, an operation (usage method) of the infusion tube set 1 will be described.
Here, the infusion tube 3a is a first infusion line (first infusion route) for administering the infusion to the patient, that is, an infusion tube through which a basic solution or the like mainly flows, and the infusion tube 3b is infused to the patient. As an example, the second infusion line (second infusion route) for administering the drug is mainly used as an auxiliary route, for example, as an infusion tube through which a fat emulsion, a therapeutic agent, an antibiotic, etc. is flowed. explain.

  In connecting the infusion tube 3a, first, for example, a maintenance infusion is prepared in the infusion bag 4.

Next, as shown in FIG. 1, the bottle needle 35 of the infusion tube 3a is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 4 in which the infusion solution is stored. Thereby, the infusion bag 4 and the infusion tube 3a are connected via the bottle needle 35, and the infusion solution can be supplied from the infusion bag 4 to the infusion tube 3a side.
Next, the flow path of the infusion tube 3a is primed.

  Next, as shown in FIG. 2, an infusion tube is connected to the female connector 221 of the infusion administration side connector 22 connected to the outlet port 211 of the indwelling needle 21 placed in the blood vessel (eg, peripheral vein) 110 of the patient. The male connector 323 of the connector 32 of 3a is inserted and fitted. As a result, the female connector 221 of the infusion administration unit side connector 22 and the male connector 323 of the connector 32 of the infusion tube 3a are connected in a fluid-tight manner.

  Next, the operation lever 224 of the infusion administration unit side connector 22 is moved to the position of the female connector 222, and the operation lever 324 of the connector 32 of the infusion tube 3a is moved to the position of the female connector 322. As a result, the lumen of the female connector 221 of the infusion administration unit side connector 22 and the lumen of the male connector 223 communicate with each other, and the lumen of the female connector 321 of the connector 32 of the infusion tube 3a and the lumen of the male connector 323. And communicate.

  Next, the roller clamp 33 of the infusion tube 3a is operated to adjust the flow rate (administration rate) of the infusion solution in the infusion tube 3a to the indicated flow rate (indication administration rate) of the maintenance infusion agent, and the infusion solution is administered.

  The male connector 323 of the connector 32 of the infusion tube 3a may be connected to the female connector 222 of the infusion administration unit side connector 22.

  Further, the infusion administration unit side connector 22 may be omitted, and the male connector 323 of the connector 32 of the infusion tube 3a may be connected to the outlet port 211 of the indwelling needle 21.

  Next, when connecting the infusion tube 3b used to administer the antibiotic, for example, at regular intervals according to the condition of the patient, first, physiological saline in which the antibiotic is dissolved is dispensed in the infusion bag 4. .

Next, as shown in FIG. 2, the bottle needle 35 of the infusion tube 3b is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 4 in which the infusion solution is stored. Thereby, the infusion bag 4 and the infusion tube 3b are connected via the bottle needle 35, and the infusion solution can be supplied from the infusion bag 4 to the infusion tube 3b side.
Next, the flow path of the infusion tube 3b is primed.

  Next, as shown in FIG. 3, the male connector 323 of the connector 32 of the infusion tube 3b is inserted and fitted into the female connector 322 of the connector 32 of the infusion tube 3a. Thereby, the female connector 322 of the connector 32 of the infusion tube 3a and the male connector 323 of the connector 32 of the infusion tube 3b are connected in a liquid-tight manner.

  Next, the operation lever 324 of the connector 32 of the infusion tube 3b is moved to the position of the female connector 322. As a result, the lumen of the female connector 321 of the connector 32 of the infusion tube 3b communicates with the lumen of the male connector 323.

  Next, the operation lever 324 of the connector 32 of the infusion tube 3a is moved to a position without any connector. Thereby, the lumen of the female connector 321 of the connector 32 of the infusion tube 3a, the lumen of the female connector 322, and the lumen of the male connector 323 are all in communication.

  Next, the roller clamp 33 of the infusion tube 3b is operated to adjust the infusion flow rate (administration rate) of the infusion tube 3b to the indicated flow rate (indication administration rate) of the antibiotic, and the infusion solution is administered.

  In this way, the maintenance infusion from the infusion tube 3a and the physiological saline in which the antibiotic is dissolved from the infusion tube 3b can be administered to the patient (can be co-injected).

  Further, when adding an infusion line (infusion route), the male connector 323 of the connector 32 of another infusion tube (not shown) is inserted into the female connector 322 of the connector 32 of the infusion tube 3b in the same manner as described above. Fit. Thereby, the female connector 322 of the connector 32 of the infusion tube 3a and the male connector 323 of the connector 32 of another infusion tube are connected in a liquid-tight manner.

In the same manner, any number of infusion lines can be added.
In addition, the usage method of the said infusion tube set 1 is an example, and is not limited to this.

  For example, when the infusion is being administered to the patient from the infusion tube 3a, the replenishment may be performed by the infusion tube 3b.

  As described above, according to this infusion tube set 1, since there is always a port (female connector 322) for connecting the infusion tube, an infusion line (infusion route) can be added easily, quickly and reliably. be able to.

  That is, since there is always a port (female connector 322) for connecting the infusion tube, the connection port of the infusion tube does not become insufficient, for example, when the patient condition suddenly changes.

  Further, when adding an infusion line, it is only necessary to insert the male connector 323 of one connector 32 into the female connector 322 of the other connector 32 and fit them, so that the infusion solution is administered from the already connected infusion tube. An infusion line can be added while (for example, administering a minute amount of a drug). Thereby, for example, the risk that the drug concentration in the blood changes and the symptom changes can be avoided.

  Moreover, when adding an infusion line, it is not necessary to open the infusion line, reassemble and reconnect it. As a result, it is possible to avoid risks such as misconnection of infusion lines and increased chance of route contamination by bacteria.

  In the present invention, the number of infusion tubes in the infusion tube set may be one, or three or more.

  In the present invention, when the infusion tube set has a plurality of infusion tubes, all of the infusion tubes may be the same, all may be different, or only a part may be the same.

  In the present invention, for example, as shown in FIG. 4, the infusion tube 3a of the infusion tube set 1 may be changed to an infusion tube 3c.

  In this infusion tube set 1, a male connector (not shown) is provided at one end (tip) of the tube 31 of the infusion tube 3 c, and this male connector is connected to the female connector 222 of the infusion administration unit side connector 22. Liquid-tight connection. Note that the tip of the tube 31 may be directly joined to the female connector 222.

Next, another embodiment of the infusion tube will be described.
5 and 6 are plan views showing other embodiments of the infusion tube, respectively.

  Hereinafter, it demonstrates centering around difference with the infusion tube 3a, 3b mentioned above, and abbreviate | omits the description about the same matter.

  An infusion tube 3d shown in FIG. 5 is a check valve as a backflow prevention means that enables a flow from the bottle needle (connecting portion) 35 to the connector 32 in the middle of the tube 31 and prevents the flow in the reverse direction. 36.

  The check valve 36 is installed between the connector 32 and the roller clamp 33. The check valve 36 is preferably installed in the vicinity of the connector 32.

  The check valve 36 has a valve body in which a pair of plate-like opening and closing members (not shown) are formed, and the opening and closing members are in close contact with each other by elastic force (restoring force). The flow path in the valve 36 is closed. In the case where the infusion flow is directed from the distal end side to the proximal end side, pressure is applied to the outer surface of each opening / closing member by the infusion solution so that the opening / closing members are brought into close contact with each other. For this reason, the infusion does not flow from the distal end side to the proximal end side.

  On the other hand, when the infusion flow is directed from the proximal end side to the distal end side, a predetermined pressure is applied to the proximal end side (tapered surface) of each opening / closing member by the infusion, and the opening / closing member is separated by the pressure The flow path in the check valve 36 is opened. Thereby, the infusion flows from the proximal end side to the distal end side.

  According to this infusion tube 3d, even when the connector 32 does not have a flow path switching function, it is somewhat to some extent from another infusion tube (not shown) (for example, an infusion tube 3e described later) connected to the connector 32 of the infusion tube 3d. Even when an infusion is administered under the pressure of the above, the check valve 36 can prevent the infusion from flowing to the upstream side (base end side) of the infusion tube 3d, and the infusion is surely administered to the patient. can do.

  Moreover, according to this infusion tube 3d, the effect similar to the infusion tubes 3a and 3b mentioned above is acquired.

  The infusion tube 3e shown in FIG. 6 is connected to the distal end portion (mouth portion) of the syringe 5 as a connection portion connected to the proximal end portion of the tube 31 on the syringe (storage portion) 5 side in which the infusion solution is stored. A female connector 37 is provided.

  Further, in the middle of the tube 31, as a flow rate adjusting means for adjusting the flow rate of the infusion, for example, an orifice for adjusting a minute amount may be provided.

  According to this infusion tube 3e, the same effect as the infusion tubes 3a and 3b described above can be obtained.

Further, the infusion tube 3e has a check valve 36 in the middle of the tube 31 as a backflow prevention means that enables the flow from the connector (connection portion) 37 to the connector 32 and prevents the flow in the reverse direction. You may do it.
The check valve 36 is preferably installed in the vicinity of the connector 32.

  Since the structure and operation of the check valve 36 are the same as those of the check valve 36 of the infusion tube 3d shown in FIG. 5 described above, description thereof is omitted.

  By having the check valve 36, even when the connector 32 does not have a flow path switching function, a certain amount of pressure is applied from another infusion tube (not shown) connected to the connector 32 of the infusion tube 3e to infuse the infusion. Even if it is administered, the check valve 36 can prevent the infusion from flowing into the upstream side (base end side) of the infusion tube 3e, and the infusion can be reliably administered to the patient.

  Each of the infusion tubes 3a, 3b, 3d and 3e described above can be used alone or in combination of two or more in the infusion tube set 1 described above.

Next, 2nd Embodiment of the infusion tube set of this invention is described.
7 is a plan view showing a second embodiment of the infusion tube set of the present invention, FIG. 8 is a plan view showing a state where one infusion tube of the infusion tube set shown in FIG. 7 is connected, and FIG. It is a top view which shows the state which connected each infusion tube of the infusion tube set shown in FIG.

  Hereinafter, the infusion tube set 1 of the second embodiment will be described focusing on the differences from the first embodiment described above, and the description of the same matters will be omitted.

  The infusion tube set 1 of the second embodiment shown in these drawings is the same as the first embodiment described above except that the infusion administration unit 2 is different.

  That is, the infusion tube set 1 of 2nd Embodiment has the infusion administration part 2 and the infusion tubes 3b, 3c, and 3e similar to 1st Embodiment mentioned above, as shown in FIG.

  The infusion administration unit 2 is connected to an indwelling needle or catheter (catheter 23 in this embodiment) placed in the blood vessel 110 of the patient and a proximal end portion of the indwelling needle or catheter (catheter 23 in this embodiment). A connector (three-way stopcock in the present embodiment) 24, a tube 25 having flexibility (softness) and constituting a flow path for infusion, a male connector 26 provided at the tip of the tube 25, A connector (three-way stopcock in the present embodiment) 27 provided at the proximal end of the tube 25, an infusion administration side connector (three-way stopcock in the present embodiment) 28, and a sterilization filter 29 are provided. Yes.

  The indwelling needle or catheter and the connector 24 may be connected via a tube.

  The connector 24 includes two female connectors 241 and 242, a male connector 243, and an operation lever (operation unit) 244, and the operation lever 244 allows the inner cavity of the female connector 241 and the female connector 242 to A communication pattern between the lumen and the lumen of the male connector 243 can be selected (has a channel switching function for switching channels).

  The catheter 23 has an outlet port 231 at its proximal end, and the male connector 243 of the connector 24 is connected to the outlet port 231 in a fluid-tight manner.

  The male connector 26 provided at the tip of the tube 25 is liquid-tightly connected to the female connector 241 of the connector 24.

  The infusion administration side connector 28 has three female connectors 281, 282, 283 and an operation lever (operation part) 284, and by this operation lever 284, the lumen of the female connector 281 and the female connector 282 are provided. The communication pattern between the internal cavity of the female connector and the internal cavity of the female connector 283 can be selected (having a flow path switching function for switching the flow path).

  Similarly, the connector 27 includes three female connectors 271, 272, and 273 and an operation lever (operation unit) 274, and the operation lever 274 allows the lumen of the female connector 271 and the female connector 272 to be connected. The communication pattern between the lumen and the lumen of the female connector 273 can be selected (has a channel switching function for switching channels).

  The details of the connectors 24 and 27 and the infusion administration unit side connector 28 are substantially the same as those of the infusion administration unit side connector 22 of the first embodiment described above, and a description thereof will be omitted.

  As shown in FIG. 1, a male connector 38 is provided at the distal end portion of the tube 31 of the infusion tube 3c, and this male connector 38 is liquid-tightly connected to the female connector 282 of the infusion administration unit side connector 28. Has been.

  The sterilizing filter 29 is provided on the downstream side of the infusion administration unit side connector 28, and the connector 27 is provided on the downstream side of the filter 29.

  That is, one end side (downstream side) of the filter 29 is liquid-tightly connected to the female connector 272 of the connector 27, and the other end side (upstream side) is liquid-tightly connected to the female connector 283 of the infusion administration unit side connector 28. Has been.

  The female connector 271 of the connector 27 constitutes a mixed injection port to which, for example, the infusion tubes 3b and 3e are connected.

  The male connector 323 of the connector 32 of the infusion tube 3b, 3e is used in the case of infusion where the infusion may pass through the filter 29 or when the infusion must pass through the filter 29 when administering the infusion to the patient. In the case of an infusion that is connected to the female connector 282 of the infusion administration unit side connector 28 or the female connector 322 of the connector 32 connected to the infusion administration unit side connector 28 and should not pass through the filter 29, the connector 27 female connectors 272 or female connectors 322 of connectors 32 connected to the connectors 27.

  In the present embodiment, for example, the male connector 323 of the connector 32 such as the infusion tube 3b, 3e is connected to the connector 27. For example, the infusion tube 3b, The female connector 322 of the 3e connector 32 may be connected, and the male connector 323 and the female connector 322 of the connector 32 of the infusion tubes 3b and 3e can be connected to the connector 27. You may comprise.

  In the case where the female connector 322 of the connector 32 of the infusion tubes 3b and 3e is connected to the connector 27, for example, the female connector 271 of the connector 27 is changed to a male connector, and the shape thereof is changed to that of the infusion tubes 3b and 3e. The connector 32 has a shape that can be liquid-tightly connected to the female connector 322.

Next, an operation (usage method) of the infusion tube set 1 will be described.
Here, the infusion tube 3c is a first infusion line (first infusion route) for administering the infusion to a patient, that is, an infusion tube through which mainly a high-calorie infusion or a basic solution flows, and the infusion tube 3b is A second infusion line (second infusion route) for administering an infusion to a patient, that is, mainly used as an auxiliary route, for example, an infusion tube into which a fat emulsion, a therapeutic agent, an antibiotic or the like is flowed, and an infusion tube 3e is used as a third infusion line (third infusion route) for administering an infusion to a patient, that is, mainly as an auxiliary route, for example, as an infusion tube through which a minute amount of a therapeutic agent or the like is flowed. I will give you a description.

  In connecting the infusion tube 3c, first, for example, a high-calorie infusion is dispensed into the infusion bag 4.

  Next, as shown in FIG. 7, the bottle needle 35 of the infusion tube 3c is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 4 in which the infusion solution is stored. Thereby, the infusion bag 4 and the infusion tube 3c are connected via the bottle needle 35, and the infusion solution can be supplied from the infusion bag 4 to the infusion tube 3c side.

  Next, the operation lever 284 of the infusion administration unit side connector 28 is moved to the position of the female connector 281, the operation lever 324 of the connector 32 of the infusion tube 3 b is moved to the position of the female connector 322, and the connector 27 The operation lever 274 is moved to the position of the female connector 271, and the operation lever 244 of the connector 24 is moved to the position of the female connector 241. As a result, the lumen of the female connector 282 of the infusion administration unit side connector 28 communicates with the lumen of the female connector 283, and the lumen of the female connector 321 of the connector 32 of the infusion tube 3b and the lumen of the male connector 323. And the lumen of the female connector 272 of the connector 27 communicates with the lumen of the female connector 273, and the lumen of the female connector 242 of the connector 24 communicates with the lumen of the male connector 243. .

Next, the flow path of the infusion tube 3c is primed.
Next, the male connector 38 of the infusion tube 3c is inserted and fitted into the female connector 282 of the infusion administration side connector 28 on the catheter 23 side placed in the patient's blood vessel (for example, central vein) 110. Thereby, the female connector 282 of the infusion administration unit side connector 28 and the male connector 38 of the infusion tube 3c are connected in a liquid-tight manner.
Thereby, a high-calorie infusion solution can be administered to the patient via the filter 29.

  Next, the roller clamp 33 of the infusion tube 3c is operated to adjust the flow rate (administration rate) of the infusion tube 3c to the indicated flow rate (indicated administration rate) of the high calorie infusion, and the infusion solution is administered.

  Next, when connecting the infusion tube 3b used for administering an antibiotic, for example, first, physiological saline in which the antibiotic is dissolved is prepared in the infusion bag 4.

Next, as shown in FIG. 7, the bottle needle 35 of the infusion tube 3b is pierced (punctured) into the stopper (rubber stopper) of the infusion bag 4 in which the infusion solution is stored. Thereby, the infusion bag 4 and the infusion tube 3b are connected via the bottle needle 35, and the infusion solution can be supplied from the infusion bag 4 to the infusion tube 3b side.
Next, the flow path of the infusion tube 3b is primed.

Next, as shown in FIG. 8, the male connector 323 of the connector 32 of the infusion tube 3b is inserted into and fitted into the female connector 281 of the infusion administration unit side connector 28. Thereby, the female connector 281 of the infusion administration unit side connector 28 and the male connector 323 of the connector 32 of the infusion tube 3b are liquid-tightly connected.
Thereby, the antibiotic can be administered to the patient via the filter 29.

  Next, the operation lever 284 of the infusion administration unit side connector 28 is moved to a position where there is no connector. As a result, the lumen of the female connector 281 of the infusion administration unit side connector 28, the lumen of the female connector 282, and the lumen of the female connector 283 are all in communication.

  Next, the roller clamp 33 of the infusion tube 3b is operated to adjust the infusion flow rate (administration rate) of the infusion tube 3b to the indicated flow rate (indication administration rate) of the antibiotic, and the infusion solution is administered.

  Next, when connecting the infusion tube 3e used to administer, for example, nitroglycerin at regular intervals according to the condition of the patient, first, as shown in FIG. 9, nitroglycerin is sucked into the syringe 5 And store.

Next, the female connector 37 is inserted into the tip (mouth) of the syringe 5 and fitted. Thereby, the front-end | tip part of the syringe 5 and the female connector 37 are connected fluid-tightly, and it will be in the state which can supply infusion from the syringe 5 to the infusion tube 3e side.
Next, the syringe 5 is set in a syringe pump (not shown).

Next, the operation lever 324 of the connector 32 of the infusion tube 3e is moved to the position of the female connector 322. As a result, the lumen of the female connector 321 of the connector 32 of the infusion tube 3e communicates with the lumen of the male connector 323.
Next, the flow path of the infusion tube 3e is primed.

  Next, as shown in FIG. 9, the male connector 323 of the connector 32 of the infusion tube 3e is inserted into the female connector 322 of the connector 32 of the infusion tube 3b and fitted. Thereby, the female connector 322 of the connector 32 of the infusion tube 3b and the male connector 323 of the connector 32 of the infusion tube 3e are liquid-tightly connected.

  Thereby, nitroglycerin can be administered to the patient via the filter 29.

  Next, the operation lever 324 of the connector 32 of the infusion tube 3b is moved to a position without any connector. As a result, the lumen of the female connector 321 of the connector 32 of the infusion tube 3b, the lumen of the female connector 322, and the lumen of the male connector 323 all communicate.

  Next, the operation part by the side of a syringe pump is operated, the flow volume (administration speed) of the infusion of the infusion tube 3c is adjusted to the instruction | indication flow volume (indication administration speed) of nitroglycerin, and the infusion is administered.

In this way, a high-calorie infusion from the infusion tube 3c, a physiological saline in which an antibiotic is dissolved from the infusion tube 3b, and nitroglycerin from the infusion tube 3e can be administered to the patient. it can).
According to this infusion tube set 1, the same effect as that of the first embodiment described above can be obtained.

  As mentioned above, although the infusion tube set of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is substituted by the thing of the arbitrary structures which have the same function. can do.

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

  In addition, the infusion tube set of the present invention may not have a part of the infusion administration unit, for example, an indwelling needle or a catheter. That is, the infusion administration section only needs to have an infusion administration section side connector (for example, it may be configured only with an infusion administration section side connector).

DESCRIPTION OF SYMBOLS 1 Infusion tube set 2 Infusion administration part 21 Indwelling needle 211 Outlet port 22 Infusion administration part side connector 221 and 222 Female connector 223 Male connector 224 Operation lever 23 Catheter 231 Outlet port 24 Connector 241 and 242 Female connector 243 Male connector 244 Operation lever 25 Tube 26 Male connector 27 Connector 271 to 273 Female connector 274 Operation lever 28 Infusion administration side connector 281 to 283 Female connector 284 Operation lever 29 Filter for sterilization 3a to 3e Infusion tube 31 Tube 32 Connector 321, 322 Female connector 323 Male Connector 324 Operation lever 33 Roller clamp 331 Clamp body 332 Roller 34 Drip tube 35 Bottle needle 36 Check valve 37 Female connector 38 Male connector 4 Infusion Tsu grayed 5 syringe 110 vessels

Claims (4)

A tube constituting an infusion flow path, a connector provided at one end of the tube and having a male connector and a female connector, and a storage portion provided at the other end of the tube and containing the infusion At least one infusion tube comprising a connection to be connected;
Has a liquid dosing part side connector that can be connected to the male connector of the connector of the infusion tube to a patient, a transfusion tube set and a liquid dosing unit for administering an infusion,
The one end of the tube is connected to a portion different from the male connector and the female connector of the connector,
The male connector axis of the connector and the female connector axis substantially coincide,
The male connector of the connector has a shape that can be liquid-tightly connected to another female connector of the same shape as the female connector of the connector, and the female connector of the connector has the same shape as the male connector of the connector It has a shape that can be liquid-tightly connected to other male connectors,
The infusion administration unit side connector includes an infusion administration unit side male connector, an infusion administration unit side first female connector whose axis substantially coincides with the infusion administration unit side male connector, the infusion administration unit side male connector, and the infusion administration. A part side first female connector and an infusion administration part side second female connector whose axis is substantially orthogonal;
The first infusion unit side first female connector is connected to the other end side of the tube having a connection part connected to a storage part different from the storage part on one end side,
When the male connector of the infusion tube and the infusion administration side second female connector of the infusion administration unit are connected, the connector of the infusion tube farthest from the infusion administration unit side connector of the infusion administration unit the infusion tube set, wherein the pre Kimesu connector of the connector is always present as the connection port. The said connector has a flow-path switching function which switches a flow path so that the communication pattern with the lumen | bore of the said tube, the lumen | bore of the said male connector, and the lumen | bore of the said female connector can be selected. Infusion tube set. The infusion tube set according to claim 1 or 2 , wherein the infusion administration section has a sterilization filter provided on the downstream side of the infusion administration section side connector . The infusion tube set according to claim 3 , wherein the infusion administration section has a mixed injection port on the downstream side of the sterilization filter.

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