JPS6063051A - Disinfecting liquid holding material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a novel holding material for disinfectants, etc. Specifically, the present invention aims to provide a novel disinfectant-retaining material that can stably maintain the disinfecting or sterilizing effect of a disinfectant, etc. impregnated into a base material for a long period of time.

Background Art and Problems Various disinfectants or monobacterial solutions (hereinafter simply referred to as "disinfectants") are used to disinfect or sterilize affected areas in medical care (hereinafter referred to as "disinfectants, etc."), or to disinfect medical instruments. ), but disinfectants with a so-called halogen group in their structural formula are widely used for disinfecting traumatized areas and medical instruments that will be used for a certain period of time. The reason for this is that halogen molecules such as iodine (2) and chlorine (Cl3) have excellent disinfecting power, and halogen-based disinfectants that have water-soluble disinfectants containing these molecules, such as povidone-iodine solution and chloride Benzalkonium liquid and the like are particularly widely used because they have excellent long-lasting disinfectant effects.

By the way, these disinfectants are generally used after being impregnated with a suitable impregnated base material. For example, when disinfecting an area affected by trauma, the above-mentioned halogen-based disinfectant is impregnated in an appropriate amount into a base material and applied to the affected area, or when the circuit joints in an infusion circuit for blood transfusion etc. are to be disinfected and maintained, the above-mentioned method is used. In some cases, a base phase impregnated with a halogen-based disinfectant is wrapped around the circuit joint.

Urethane sponges made of polyurethane are often used as base materials impregnated with these disinfectant solutions.

However, when a urethane sponge is used as a base material for impregnating these disinfectants, the disinfectant properties of these disinfectants are: 4
The research conducted by the present inventors has revealed that the ar effect is significantly reduced. The reason for this seems to be the point mentioned by Richiji.

That is, when a urethane sponge is impregnated with the above-mentioned disinfectant having a halogen group, the
This is thought to be because a halogen group such as -1F- bonds with an amino group contained in the polyurethane, thereby fixing the halogen group to the polyurethane. That is, in general, triethylenediamine is used as a catalyst in the process of producing polyurethane, and tertiary amines often remain in the produced polyurethane/tuff. This tertiary amine has a positive charge, and the above-mentioned halogen group has a negative charge, so when a urethane sponge made of polyurethane is impregnated with a halogen-based disinfectant, the tertiary amine becomes a halogen group. This is because the halogen group is stabilized by bonding with the polyurethane, and as a result, the halogen group is fixed to the polyurethane. Specifically, for example, the iodine group I of the povidone-iodine solution reacts with the tertiary amine remaining in the polyurethane as shown in the following formula, CH2-CH2 1\ -CH2CH2-N N-I \ 1 CH2 -CH2 Also, for example, the salt &CL of benzalkonium chloride liquid
It is thought that this is because it reacts with the tertiary amine remaining in the polyurethane as shown in the following formula.

CH2-CH2 -CH2-CH2-N N-CL ＼ CH2-CH2 On the other hand, another reason for the decrease in the disinfection effect that occurs when a urethane sponge is impregnated with a halogen-based disinfectant is due to the urethane bonds in polyurethane. This is believed to be because the N group bonds with the halogen group described above. That is, polyurethane forms a long-chain polymer with urethane bonds as shown in the following formula, and the N groups in this urethane bond are, for example, the iodine groups in the povidone-iodine solution and the bottom. This is because they are combined as shown in Eq.

-0-C-N- 11 0...The graph in Figure 1 shows the amount of active material present in a free state in a povidone-iodine solution when a urethane sponge made of polyurethane is impregnated with the solution. An example of test results measuring changes in iodine over time is shown below.

・Sample: Povidone-iodine solution containing 1% effective iodine in a 10% aqueous solution of povidone-iodine.

-Test method: Polyurethane was housed in a synthetic resin case, impregnated with the above povidone-iodine solution, and finally the amount of effective iodine was measured according to the following determination method.

・Method for determining effective iodine... Accurately measure a volume corresponding to 50 mg of iodine in crystal, add water to make 30 ml, add 1 mL of dilute hydrochloric acid to this solution, and use 3 mL of starch reagent as an indicator to prepare 0.02N sodium thiosulfate solution. It was judged.

The results obtained by such a test are shown in the broken line graph A in the figure. Note that this graph has a scale of elapsed time (
It was created by plotting the percentage of available iodine on the Y-axis, and plotting the change in percentage of available iodine over time.

As this graph A shows, the available iodine present in a free state in the povidone-iodine solution is immediately after the start of the test (
It decreased to 0.8% only 15 minutes after the polyurethane was impregnated with the povidone-iodine solution, and continued to decrease gradually over time.

Purpose of the Invention The present invention was devised in view of the above-mentioned problems, and it is possible to stably maintain the disinfecting effect of a halogen-based disinfectant liquid etc. impregnated into a base material for a long period of time. The purpose of the present invention is to provide a new disinfectant solution, etc.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned objectives, the disinfectant solution holding material of the present invention is made of a material that does not have a group that binds to halogen, and is impregnated with a disinfectant solution or the like that has a halogen group in its structural formula. It is characterized by Second, the inside of the case is removably attached to the infusion circuit with a base material that is made of a material that does not have a group that binds to halogen and is impregnated with a disinfectant that has a halogen group in its structural formula. It is characterized by being stored in.

EXAMPLES Below, the details of the holding material for disinfectant, etc. of the present invention will be explained according to each example shown in the drawings.

First example FIG. 2 shows a first embodiment of the holding material for disinfectant, etc. of the present invention.

In the figure, numeral 1 indicates a base material wound into a substantially roll shape. The base material 1 is made of a fiber material that does not have at least a halogen group, that is, a group that is easily bonded to halogen molecules such as iodine (I 2 ) and chlorine (CL 2 ). . There are several types of female materials that do not have groups that can be easily bonded to /\rogen molecules. A fibrous material composed of cellulose or the like is used. Furthermore, the base material 1 in this embodiment is processed into a substantially sponge-like shape by mixing a small amount of reinforcing material, a crystallizing agent for forming air bubbles, etc. with the fibrous material described in 1.

The base material 1 is pressed in the final step of processing, so that the base material 1 is formed into a substantially cross shape as a prototype.

The base material 1 made of such a material is cut with scissors or the like into a rib shape of the desired size, as shown in FIG. 2(B). As a result, a pad 2 impregnated with a disinfectant or the like is formed.

Therefore, the pad 2 thus formed is impregnated with a halogen disinfectant 3. There are various halogen-based disinfectants, and for example, povidone-iodine solution, benzalkonium chloride solution, chlorhexidine hydrochloride solution, or aqueous chlorhexidine solution may be used. In particular, povidone-iodine solution is considered to be one of the most desirable disinfectants since it is itself a disinfectant with an excellent long-lasting disinfectant effect.

If the pad 2 is impregnated with the disinfectant solution 3, for example, by using a dropper 4, it is possible to impregnate the pad 2 with just the right amount of disinfectant solution.

When the pad 2 is impregnated with the disinfectant solution 3 as described above, it expands significantly as shown in FIG. That is,
As mentioned above, since the pad 2 is made of a base material l obtained by pressing a sponge-like material, its volume increases from several times to several times lO by absorbing m1(f,3). It expands even more.

Thus, the disinfectant-retaining material 5 impregnated with the disinfectant solution 3 is constructed. Holding material 5 for disinfectant etc. configured in this way
is made by impregnating a disinfectant with halogen groups into a base material l that does not have groups that easily bond with halogen groups, so iodine (I 2 ) and chlorine (CL 2 ) dissolved in water in the disinfectant are ) etc. are not fixed to the base material l. Therefore, the disinfectant effect of the disinfectant impregnated in the pad 2 is stable, and even if the disinfectant etc. holding material 5 is fixed to the affected area or medical equipment for a long time, the disinfectant effect is always stable. I can do it with Jin.

The graph in FIG. 1 shows an example of the results of a test that measured the change over time in the amount of effective iodine in the disinfectant solution #5. The samples used in this test, the test method, and the method for determining effective iodine were based on the tests conducted on the conventional disinfectant holding material, i.e., a base material made of polyurethane impregnated with a halogen disinfectant. The case is exactly the same.

The results obtained from this test are shown in solid line graph B in the figure. As shown in graph B, the amount of effective iodine contained in the povidone-iodine solution remains stable over a considerable period of time.

Examples of Use Next, some examples of use of the holding material such as a disinfectant in the first embodiment described above will be explained.

First, a holding material 5 such as a disinfectant is applied to the affected area caused by, for example, trauma, and this is fixed to the affected area using a medical adhesive tape or the like.

Second, the disinfectant-retaining material 5 impregnated with a disinfectant or the like is stored in a sealed state in a non-water-permeable falcon bag, and when used, it is taken out of the bag and used as described above.

Thirdly, various infusion circuits in medical care, such as junctions in infusion circuits for injecting or extracting blood, nutrient clear liquid, and various dialysates (hereinafter referred to as "infusion fluids") into the blood vessels or intraperitoneal cavity of the human body. Used as a disinfectant retaining material. FIGS. 3 and 4 show an example of such an infusion circuit joint and a means for attaching the disinfectant etc. holding material 5 of this embodiment to the joint.

The infusion circuit shown in this example is II! This is an example of an infusion circuit used for membrane dialysis. In the figure, 6 is an infusion bag made of thermoplastic synthetic resin material, and is made of two sheets.
are overlapped, and the overlapped periphery 7.7,...
・It is formed into a bag shape with a closed space by welding. Reference numeral 8 denotes an infusion collection tube of the bag 6, and the proximal end thereof is sandwiched between the leading edges of the two sheets marked J1 of the bag 6 and welded together. Reference numeral 9 denotes a joint tube section provided at the tip of the bare infusion tube 8;
The proximal end of 7. is press-fitted into the distal end of the infusion fluid collection tube 8 to form an I-shape 7.
'ii are integrally welded together. still.

A relatively thin-walled occlusion membrane 10 is formed in advance at the proximal end of the joint tube section 9, and this occlusion membrane 10 serves as a plug member for the ring 1 extraction tube 8.

Reference numeral 11 denotes an infusion tube for transporting the dialysate in the infusion bag 6 into the abdominal cavity, and the tip thereof is connected to an infusion side or a catheter '9.

J2 is a join member that connects the medium extraction tube 8 and the infusion tube 11 of the above-described @liquid bag 6, and is integrally formed on the main body 13 formed in a substantially rectangular shape and the tip of the main body 13. It consists of a flange part 14, a substantially syringe-needle-shaped joint part 15 protruding forward from the center of the flange part 14, and a joint pipe part 16 protruding from the rear end of the main body part 13, and is made of hard synthetic material. It is made of resin material. In the axial center of the joint member 12, there is a hole 17 that is penetrated from the tip of the front joint tube fJTI 15 to the rear end of the rear joint tube section 16.
is formed. In addition, the front junction 1F';'mI 1
The tip part 5 is obliquely curved to have a sharp shape, and the outer diameter of the proximal end part 18 is larger than the other parts. Thus, the proximal end of the infusion tube 11 is connected to the joint tube section 16 on the rear side of the joint member 12.
The joint member 12 and the infusion tube 11 are connected to each other by being externally fitted in the shape of Ei. In addition, infusion tube 1
1 is normally connected substantially fixedly to the joint member 12, and the two members are never separated from each other, so the joint tar
t. The joint pipe section 16 on the rear side of the material 12 and the proximal end of the infusion tube 11 may be in a broken state of welding, and the joint may be appropriately sealed.

Therefore, the joint pipe t+++ on the front side of the joint member 12
15 is inserted into the joint tube section 9 on the side of the infusion bag 6, thereby connecting the bag 6 and the infusion tube 11 to each other. Incidentally, when the joint tube section 15 on the front side of the joint member construction 2 is inserted into the joint tube section 9 of the bag 6, the sharp tip of the joint tube section 15 breaks through the closing membrane IO, thereby forming an infusion circuit. .

Therefore, the above-described holding material 5 for disinfectant, etc. is attached to the thus-connected joint portion. That is, first, the holding material 5 such as a disinfectant solution is applied to the joint,! p, gauze 19 is placed on the disinfectant etc. holding material 5 wrapped around the part where the tips of both joint pipe parts 9 and 15 are joined to each other and the surrounding part.
and finally, apply an appropriate medical adhesive tape 2.
Wrap 0. As a result, the disinfection state of the joint portion by the holding material 5 such as a disinfectant solution can be maintained.

Second Embodiment FIG. 5 shows a second embodiment 5A of the holding material for disinfectant, etc. of the present invention. The difference between the disinfectant-retaining material 5A shown in the second embodiment and the disinfectant-retaining material 5 in the first embodiment is that a pad impregnated with a disinfectant is housed inside the case. At the point.

In the figure, 21 is a plastic case, which has two casing halves 22 and 23 each formed into a lid shape.
are connected to each other via a hinge portion 24 so as to be freely openable and closable, and a locking protrusion 25 is formed on one side of one casing half 22, and a locking recess 26 is formed on one side of the other casing half 23. -I feel defeated. Therefore, by closing the casings 22 and 23 so that their respective opening surfaces are overlapped, the substantially box-shaped case 21 can be constructed.
and the locking recess 26 are engaged with each other to be held. 27.27, φ・e are four semicircular notches formed on the opening edge sides of two parallel sides of each casing half 22 and 23, so that the casing halves 22 and 23 are closed to each other. When the opening is opened, a circular opening is formed. Further, reference numeral 28 denotes a pad which is obtained by cutting the above-mentioned base material l into a predetermined size and impregnating it with the above-mentioned halogen-based disinfectant, and is housed inside the casing halves 22 and 23.

The disinfectant etc. holding material 5A thus constructed is attached to the infusion circuit junction shown in FIG. 3 above. That is, when the casing halves 22 and 23 are in the open state as shown in the figure, the flange 14 of the sealed member 12 is placed inside the casing half 22 at a position resting on one side of the case, and the joint pipe portion 9 is inserted into the recess 27. .27, and both casing halves 22.23
When the case 21 is closed, the case 21 is attached to the infusion circuit so as to surround the joint, and the pad 28 comes into contact with the outer peripheral surface of the joint. As a result, the infusion circuit joint is disinfected, and since the disinfectant impregnated in the pad 28 is held by the case 21, evaporation is suppressed and the disinfectant is evenly leached onto the outer peripheral surface of the joint. This state is maintained for a long period of time.

Embodiment t53 FIGS. 6 to 9 show a third embodiment 5B of the holding material for disinfectant, etc. of the present invention. The disinfectant etc. holding material 5B shown in this third embodiment is also the disinfectant etc. holding material 5 in the above-mentioned second embodiment.
Like A, it consists of a pad impregnated with disinfectant and housed inside a case, but there is a difference in the structure of the case.

In the figure, 29 is a case formed in a substantially cylindrical shape, and is made of a transparent hard synthetic resin material, for example, a transparent polyester plastic material. The main body part 3 is integrally formed.
The holding portion 31 has a diameter slightly larger than that of the holding portion 31. Main body part 3
Although the inner diameter of the tube 0 is not necessarily determined, it is formed to be larger than the diameter of the joint pipe section 9 constituting the joint section of the infusion circuit shown in FIG. ing. One end of the case 29 is closed by a wall 33 having an opening 32 formed in the center. The other end of the case 29 has an opening 34 over almost the entire surface, and the opening edge 35 is bent slightly inward. Therefore, the case 29 is opened at 32.34 at both axial ends thereof. The diameter of the opening 32 at one end is approximately the same as the diameter of the joint tube section 9 of the infusion circuit joint described above, but at least the opening 32 can be easily inserted through the joint tube section 9. It is desirable that the An annular protrusion 35 is formed along the inner edge of the opening 32 formed at one end of the case 29. Also,
A plurality of disinfectant injection holes 37, 37, . . . are formed in the peripheral wall of the main body 30 of the case 29.

Reference numeral 38 denotes a pad formed in a substantially cylindrical shape, and is formed by processing the same material as the base material 1 described above into a substantially cylindrical shape. The pad 38 in this embodiment has an inner diameter larger than the outer diameter of the joint tube portions 9 and 15 of the infusion circuit, and an outer diameter of the case 29 before it is impregnated with the disinfectant. It is formed smaller than the inner diameter of.

Furthermore, the pad 38 has a slit 3 extending along the axial direction.
9 is formed, therefore, the cross-sectional shape of the pad 38 is approximately C-shaped. Note that 40 indicates a through hole formed in the axial center of the pad 38.

Therefore, one end of the through hole 40 of the pad 38 is connected to the cap.
The housing 29 is mounted in the case 29 so as to be fitted onto an annular protrusion 36 formed on the inner opening periphery of the opening 32 at one end of the case 29 .

Thus, the disinfectant etc. holding material 5B configured in this manner is attached to the joint of the infusion circuit described above along the axial direction of the joint. The mounting procedure will be explained step by step from (A) to (c) in FIG. 9.

First, from the state shown in Figure (A), the middle part of the infusion fluid collection tube 8 is held between appropriate medical clips 41, and the disinfectant etc. retaining material 5B is fitted onto the joint tube part 9 (( B) State shown in the figure).

At this time, hold the disinfectant etc. holding material 5B on the grip part 3 of the case 29.
The case 29 is fitted externally into the joint pipe part 9 from the side where 1 is formed.
Fit it in until the wall 33 at one end abuts the tip of the bare outlet pipe 8. In this state, the tip of the joint tube part 9 is in a position retracted toward the center side from the other end of the disinfectant etc. holding material 5B, so that the entire outer circumferential surface of the joint pipe part 9 is covered by the disinfectant etc. holding material 5B. It becomes a state of being surrounded. Therefore,(
B) From the state shown in the figure, press fit the joint tube section 15 on the front side of the joint member 12 into the joint tube section 9 of the infusion collection tube 8. This press-fitting is performed until the end surface of the proximal end portion 18 of the joint tube portion 15 on the side of the joint member 12 abuts the tip of the joint tube portion 9.
In this press-fitting process, the tip of the joint pipe portion 15 on the niJ side of the joint member 12 is closed II! The IIO is pierced and inserted into the infusion fluid collection tube 8, whereby the infusion fluid collection tube 8
The hole 17 of the joint member 12 and the infusion tube 11 are integrally connected to form an infusion circuit, and the outer peripheral surface of the proximal end 18 of the joint tube section 15 of the joint member 12 is covered with the disinfectant etc. holding material 5B. It becomes surrounded by. Therefore, the joint between the infusion fluid collection tube 8 and the joint I/member 12,
That is, the end portion 18 is placed between the tip of the joint tube portion 9 and the joint tube portion 15.
The abutting portion with the tip of is surrounded by the disinfectant etc. holding material 5B. In this state, since the case 29 is fitted onto the joint pipe parts 9 and 15, which are tubular members, the case 29 is prevented from being removed, and the case 29 is
Since one end surface of the case 29 is abutted against the tip of the infusion extraction tube 8 and the other end of the case 29 is abutted against the front side of the flange 14 of the joint member 12, the position of the case 29 can be prevented from shifting. This prevents the use of disinfectant, etc. holding material 5.
B is securely held at the infusion circuit junction.

Thus, in a state where both the joint pipe parts 9 and 15 are connected to each other and the holding material 5B for disinfectant etc. is attached to the joint part, the case 29 is held against the pad 38 inside the case 29. The above-mentioned halogen disinfectant is injected using a dropper or the like through the injection ports 37, 37, . . . formed on the outer peripheral wall of the main body. Then, since the pad 38 is formed of the base material l described above, its volume is expanded by absorbing the disinfectant, and the pad 38
The slit 39 of the pad 38 is closed, and the inner peripheral surface of the pad 38 is brought into pressure contact with each of the joints (11 parts 9 and 15), and the outer 154 surface of the pad 38 is brought into pressure contact with the inner peripheral surface of the case 29. be contacted.

Therefore, the disinfectant solution impregnated into the disinfectant-retaining material 5B is leached onto the outer peripheral surfaces of the proximal end portions 18 of the joint tube portion 9 and the joint tube portion 15, thereby disinfecting the joint portions. Moreover, this state of disinfection etc. is maintained until the disinfectant etc. holding material 5B is removed. Therefore, the joint can always be kept in a sterile state by the holding material 5B, such as a disinfectant solution.

Modified Example FIG. 10 shows a modified example of the holding material for disinfectant, etc. of the present invention. In the figure, reference numeral 42 denotes an appropriate bottle containing a halogen-based disinfectant, and a coating pad 44 is press-fitted into a narrow opening 43 of the bottle 42 . This pad 44 is made of the same material as the base material 1 described above and processed into a substantially columnar shape.Although not shown, an appropriate cap member can be attached to and detached from the opening O part 43 of the bottle 42. It is now worn as a crown.

Then, hold the bottle 42 almost upside down and use the pad 44.
When the pad 44 is lightly pressed against the affected area, the disinfectant solution inside the bottle 42 is impregnated into the pad 44, and the disinfectant solution impregnated into the pad 44 is gradually leached from the pad 44 into the affected area. In this way, the disinfectant-retaining material of the present invention can also be used as a coating material for applying disinfectants and the like. Further, since the cellulose sponge has a very large volume when swollen, it is extremely easy to attach the pad 44 to the bottle, and there is no risk of liquid leakage even if the pad is facing downward.

Effects of the Invention As is clear from the above description, the first holding material for disinfectant solution 9, etc. of the present invention is made of a material that does not have a group that binds to halogen, and is a disinfectant that has a halogen group in its structural formula. It is characterized by being impregnated with liquid, etc.

Therefore, according to the present invention, the halogen groups of the halogen-based disinfectant are not immobilized on the base material, so that the halogen groups can be maintained in a free state in the aqueous solution. Therefore, if a base material impregnated with a halogen-based disinfectant or the like is brought into contact with the affected area or the predetermined disinfection area of the medical instrument.

The halogen group, which is effective for disinfecting the disinfectant powder impregnated in the base material, advances to the disinfection area and is attached thereto, making it possible to stably perform effective disinfection for a long period of time.

The second holding material for disinfectants, etc. of the present invention is a base material impregnated with a disinfectant solution etc. that has a halogen group in its structural formula and is made of a material that does not have a group that binds to halogen. Since it is housed inside a case that is detachably attached to the circuit, the case can prevent the poisonous liquid from drying out, thereby increasing the disinfecting effect of the disinfectant. It can last for a longer period of time.

In the above-mentioned embodiment, a sponge-like material made of cellulose-based material was used for the pace impregnated with the disinfectant, but by using such a material for the base material, it is possible to The amount of liquid such as disinfectant that can be contained in the volume of can be extremely increased,
As a result, the disinfecting effect of the eraser 4fJ retaining material can be further enhanced and maintained stably for a long period of time.

[Brief explanation of the drawing]

Figure 1 is a graph showing the change over time in the disinfectant active ingredient of the conventional disinfectant retaining material and the disinfectant retaining material of the present invention, and Figure 2 is a graph showing the first embodiment of the disinfectant retaining material of the present invention. (A)
is a perspective view showing the base material rolled into a roll; (
B) is a perspective view showing the state in which disinfectant is added to the base material that has been cut out in the required amount, (C) is a perspective view showing the base material impregnated with the disinfectant, and Figure 3 (A) is An exploded perspective view showing an example of an infusion circuit, FIG. 3(B) is similar to FIG. 3(A)
An enlarged cross-sectional side view of the junction of the infusion circuit shown in Figure 4.
The figure shows an example of the use of the disinfectant solution holding material shown in FIG. A second embodiment of the holding material for disinfectant, etc. of the present invention is shown, in which the holding material for disinfectant, etc. stored inside the case formed in two parts is attached to the joint part of the infusion circuit shown in Fig. 3. 6 to 9 show a third embodiment of the holding material for disinfectant, etc. of the present invention,
Figure 6 is a perspective view showing the base material and the cylindrical case in which the base material is stored, Figure 7 is a side view of the base material stored inside the case, and Figure 8 is a storage area for disinfectant, etc. The material is the third
Figure 9 shows the process of attaching the case containing the base material inside to the joint of the infusion circuit from (A) to (C). The longitudinal side views shown in sequence and FIG. 1O are perspective views showing a modification of the holding material for disinfectant, etc. of the present invention. Explanation of codes 1・3〇Base material, 5.5A, 5B... Disinfectant etc. holding material, 21.29 Fist・Φ case Applicant Nippon Vilene Co., Ltd.

Claims (2)

[Claims] (1) A holding material for disinfectants, etc., which is made of a material that does not have a group that binds to halogen, and is impregnated with a disinfectant, etc. that has a halogen group in its structural formula. (2) A base material that is made of a material that does not have a group that binds to halogen and is impregnated with a disinfectant or the like that has a halogen group in its structural formula is housed inside a case that is detachably attached to the infusion circuit. A holding material for disinfectants, etc. that is characterized by