JP4867025B2 - Catheter fixture - Google Patents

Description

The present invention relates to a catheter fixing tool for fixing a catheter (hereinafter simply referred to as a catheter) such as a tube, cannula, drain or the like to be inserted into a body to the body surface.
More specifically, the present invention relates to a catheter fixture for fixing a puncture portion of a catheter.
In addition, the fixing device of the present invention can be suitably used for medical materials other than catheters, the fixation of devices to the body surface, the protection or treatment of skin and wounds, etc. in the medical field.

  In the medical field, catheters are placed in the body for the purpose of drug administration, nutrition management, body fluid discharge, monitoring, and the like. This type of catheter may be left for several hours to several days for its intended treatment, but during that period, the catheter should not be dropped from the patient or inserted excessively into the interior. The catheter must be securely fixed and held at a specific position on the body surface.

  In particular, the puncture portion of the catheter is likely to become a source of infection due to contamination around the catheter. Therefore, in fixing the puncture portion of the catheter, a sheet-like or roll-like patch made of a thin plastic film that prevents invasion of bacteria and liquid and adapts to the catheter is widely used (for example, Patent Documents 1 and 2). reference). However, this type of patch is highly stretchable and flexible, so that when the skin is stretched or when a traction force is applied to the catheter, the film is wrinkled or a gap is formed between the catheter and the film. Sometimes. These wrinkles and gaps generated in the film may infiltrate contaminants and make the catheter easier to move, which may cause infection.

In order to improve the adaptability between the film and the catheter, a dressing product or the like in which a peripheral portion of the film is provided with a recess or a slit is disclosed (for example, Patent Documents 3 and 4).
However, it is very troublesome to align a predetermined slit portion with a predetermined portion of the catheter as in these dressings. When applying these care products, care and dexterity are required so that wrinkles and air do not enter between the film and the catheter, and the catheter is fixed depending on the purpose of the treatment of the catheter and the procedure of the medical staff. Since the position, the bending method, and the like change, it may be difficult to match the slit portion and the catheter position, and this work is a heavy burden for the medical staff.
In addition, when the puncture part of the catheter is near a portion with a large unevenness or curvature, such as under the clavicle or forearm, it is difficult to ensure the adhesiveness between the patch and the catheter or skin. There was also a problem that wrinkles and peeling easily occur.

Japanese Patent No. 3567432 JP 2006-167129 A JP-T-4-501371 JP-T-2006-522633

  This invention was made in view of the above problems, and the problem of the present invention is that the catheter can be reliably fixed at a specific position on the body surface, and further, wrinkles and peeling are unlikely to occur. An object of the present invention is to provide a catheter fixture that is easy to handle.

  In order to solve the above-described problems, the present invention provides a base material having a top surface and a bottom surface, a pressure-sensitive adhesive layer covering at least a part of the bottom surface of the base material, and a pressure-sensitive adhesive protection that covers and peels the surface of the pressure-sensitive adhesive layer. A catheter fixture comprising a layer, wherein notches for forming the catheter along the peripheral edge of the base material are formed at 3 to 12 positions at intervals of 30 ° to 160 °. (Claim 1). A base material comprising a plastic film having a top surface and a bottom surface; a pressure-sensitive adhesive layer covering at least a part of the bottom surface of the base material; a pressure-sensitive adhesive protective layer covering the surface of the pressure-sensitive adhesive layer; In a catheter fixture comprising a support temporarily attached to the upper surface, 3 to 12 notches are formed on the peripheral edge of the base material at intervals of 30 ° to 160 ° along the catheter. (Claim 2).

  According to the configuration of the first or second aspect, by arranging the notch portions with the interval and the number in the above range, the alignment between the catheter and the catheter fixture is facilitated, and the catheter fixture is made uneven or curved. Even when affixed to a large site, the peripheral edge of the base material is easily adapted to those sites and the adhesion to the catheter is increased, so that the catheter fixture is less likely to be wrinkled or peeled off.

  As an embodiment of the invention of the first or second aspect, the inventions of the following third to ninth aspects are preferable. That is, in the catheter fixture according to claim 1 or 2, the notch portions are formed with an interval of 30 ° to 75 ° (claim 3). Thereby, alignment with a catheter and a catheter fixing tool becomes still easier.

  The catheter fixture according to any one of claims 1 to 3, wherein the notch is formed by being cut out in an arc shape and sandwiched between the two arc-shaped notches. Is formed in a substantially trapezoidal shape with the base edge being an upper base shorter than the lower base (claim 4). By providing such a substantially trapezoidal portion on the peripheral edge portion of the base material, the peripheral edge portion of the base material easily adheres to the catheter or the skin, and the fixation of the catheter is enhanced. Furthermore, since there is a substantially trapezoidal portion at the periphery of the base material, the trapezoidal portion can be picked and peeled when the fixture is peeled off, so that the handleability is good.

  Furthermore, the catheter fixture according to any one of claims 1 to 4 may have a plurality of notches having different sizes or shapes (claim 5). Further, in the catheter fixture according to any one of claims 1 to 5, a part or all of a peripheral portion of the base material is formed of a fiber base material, and a cut for extending the catheter along the fiber base material. A notch can be provided (claim 6). Furthermore, in the catheter fixture according to any one of the first to sixth aspects, the outer shape of the base material can be substantially circular or elliptical (Claim 7).

  In the catheter fixture according to any one of claims 1 to 7, an absorbent pad is provided between the pressure-sensitive adhesive layer and the pressure-sensitive adhesive protective layer (claim 8). Thereby, the blood and exudate from the puncture part of a catheter can be absorbed and generation | occurrence | production of infection can be prevented.

  Furthermore, the catheter fixture according to any one of claims 1 to 8, further comprising an auxiliary strip for attaching to a peripheral portion of a base material, wherein the auxiliary strip extends the catheter along the peripheral edge. A notch is to be formed (claim 9). The notch portion of the auxiliary strip and the notch portion of the catheter fixture are opposed to each other, and the catheter is fixed so as to be sandwiched between the recesses of the two notch portions, thereby securing the catheter more reliably. It becomes possible.

  According to the present invention, a plurality of (three or more) notches formed at predetermined positions on the peripheral edge of the base material can easily and reliably fix the catheter at a specific position on the body surface, Since wrinkles and peeling are unlikely to occur, it is possible to provide a catheter fixture that is effective in combating infection and easy to handle. Further, by providing an absorbent pad and an auxiliary strip, it is possible to further improve the fixation of the catheter and the infection prevention effect.

Based on FIGS. 1-6, embodiment of this invention is described below. In addition, the common part of each embodiment demonstrates using the code | symbol of the same number.
FIG. 1: shows the block diagram of embodiment which concerns on the catheter fixture of this invention, a) A figure is a front view, b) A figure is sectional drawing which follows the bb line | wire of a) figure.
The substantially circular catheter fixture 1 includes an adhesive layer 3 (which covers the entire bottom surface of the base material in this embodiment) covering at least a part of the bottom surface of the base material 2 made of a thin plastic film, and the adhesive layer 3 It has the structure provided with the adhesive protective layer 4 which can be peeled from the surface. In the peripheral edge of the base material 2, notches 20 are formed at predetermined intervals along the catheter. In the present embodiment, the arc-shaped cutout portions 20 are formed at eight places with an interval of 45 °. On the other hand, a portion 5 sandwiched between two arc-shaped cutout portions 20 forms eight portions having a substantially trapezoidal shape. That is, the portion 5 sandwiched between the two arc-shaped cutouts has a substantially isosceles trapezoidal shape having an upper base shorter than the lower base when the peripheral edge of the substrate is viewed as the upper base and the portion facing it is the lower base. The shape is formed.

FIG. 2: shows the block diagram of embodiment different from FIG. 1 which concerns on the catheter fixture of this invention, a) A figure is a front view, b) A figure is sectional drawing which follows the bb line of a) figure. .
In the embodiment of FIG. 2, HYPERLINK “javascript: fGetImage ('000003', 'FIG. 1', 'K1');" The substrate 2 and the adhesive layer 3 are formed thinner than the embodiment of FIG. 1 is different from the embodiment of FIG. 1 in that the support 6 is temporarily attached to the upper surface of FIG. The support body 6 is temporarily attached to the upper surface of the base material 2 in order to prevent the base material 2 from wrinkling when the base material 2 made of a thin plastic film is applied, and the catheter fixture 1 is attached to a predetermined site. It can be easily peeled off by holding the tab 7 installed at the end of the support 6 after being attached to.
In the present embodiment, the arc-shaped cutout portions 20 are formed at seven places with an interval of 45 ° (only one portion is an interval of 90 °). A portion 5 sandwiched between two arc-shaped cutout portions 20 forms a portion having six substantially isosceles trapezoidal shapes.

FIG. 3 is a front view of an embodiment of the catheter fixture according to the present invention that is different from FIG. 1 in plan view. Except for the planar shape, it has the same configuration as the embodiment of FIG.
In the embodiment of FIG. 3 a), the planar shape of the catheter fixture 1 is formed in a substantially oval shape as a whole, and arc-shaped cutout portions 20 are formed at 12 positions with an interval of 30 °. Further, a portion 5 sandwiched between two arc-shaped cutout portions 20 forms a portion having a shape of 12 substantially isosceles trapezoids.
In the embodiment of FIG. 3b), the overall shape of the catheter fixture 1 is formed in a substantially circular shape, and arc-shaped cutout portions 21, 22, and 23 having different sizes are formed at six positions with an interval of 60 °. ing. In the present embodiment, the notch portions are provided so that arc-shaped notch portions having the same size are located at positions facing each other. Further, a portion 5 sandwiched between two arc-shaped notches forms six portions having a substantially trapezoidal shape.
The embodiment of FIG. 3b) has an advantage that even when a catheter having a different diameter is used due to a difference in a treatment method or the like, a notch portion that is most easily fitted to the catheter having the diameter can be selected.

FIG. 4: shows the block diagram of embodiment different from FIG. 1 which concerns on the catheter fixture of this invention, a) A figure is a front view, b) A figure is sectional drawing which follows the bb line of a) figure. .
The embodiment of FIG. 4 differs from the embodiment of FIG. 1 in that the substrate is formed of a laminated substrate. That is, the substrate of the embodiment of FIG. 4 is a laminated substrate of a plastic film substrate 2a having a bottom surface coated with an adhesive layer 3a and a fiber substrate 2b made of a nonwoven fabric or the like, and is a ring-shaped fiber substrate. The material 2b has the structure fixed to the peripheral part of the plastic film base material 2a by the adhesive layer 3b. And the notch 20 for running along a catheter is provided in the fiber base material 2b which forms the peripheral part of a base material.
In the present embodiment, the arc-shaped cutout portions 20 are formed at eight places with an interval of 45 °. Further, the portion 5 sandwiched between the two arc-shaped cutout portions 20 forms a portion having an approximately isosceles trapezoidal shape at eight locations.
In the embodiment of FIG. 4, since the central portion of the base material corresponding to the puncture portion of the catheter is formed of a plastic film, it is easy to observe the puncture portion that is easily infected, and the peripheral portion of the base material is made of a fiber base material. By forming, the fixing property of the catheter becomes better than when the plastic film base material is used alone, and the movement of the catheter can be suppressed.

FIG. 5 is a diagram showing an actual use state of the catheter fixture of the present invention, and shows a state where the catheter 9 is fixed by the catheter fixture. In the embodiment of FIG. 5, the absorbent pad 8 is provided between the adhesive layer and the adhesive protective layer in the catheter fixture of the embodiment shown in FIG. Is already peeled off from the upper surface of the substrate 2.
Blood or exudate may ooze out from the puncture portion of the catheter 9, but if these blood and exudate are left unattended, skin resident bacteria may grow there and become a source of infection. Therefore, in order to prevent the occurrence of infection, the catheter fixture of the present invention is provided with the absorbent pad 8 around the puncture part (center part of the base material). This pad is a liquid such as blood or exudate. It is preferable to use an absorbent pad. The absorbent pad is preferably in a ring shape so that the puncture portion of the catheter can be observed, and is preferably subjected to antibacterial treatment as described later.

FIG. 6 is a diagram for explaining the auxiliary strip 10 to be attached to the peripheral edge portion of the base material of the catheter fixture. 6A) is a view showing a use state in which the auxiliary strip 10 is affixed to the catheter fixture shown in the embodiment of FIG. 5, and FIGS. 6B to 6E are views showing variations in the shape of the auxiliary strip. It is.
The auxiliary strip 10 is formed with a notch 200 along the periphery of the auxiliary strip 10 so as to run along the catheter. The auxiliary strip 10 is preferably affixed to the peripheral edge of the base material of the catheter fixture so that the recess of the notch 200 faces the recess of the notch 20 of the catheter fixture. That is, it is preferable to fix the catheter so that the catheter 9 jumping out from the peripheral edge of the base material of the catheter fixture is sandwiched between the notch portion 20 of the catheter fixture and the notch portion 200 of the auxiliary strip 10. In this figure, the auxiliary strip 10 is put on the lower side of the catheter 9 and attached so as to press the base material 2 from above the peripheral edge of the base material of the catheter fixture 1. It may be pasted. By using such an auxiliary strip, the peripheral edge portion of the base material of the catheter fixture is prevented from peeling off and floating more easily, so that it is possible to more surely prevent the displacement of the catheter and the invasion of bacteria.

  As the shape of the catheter fixture 1 of the present invention, a circular shape, an elliptical shape, a polygonal shape such as a triangular shape, a rectangular shape, or a rhombus shape can be used, and a shape obtained by appropriately combining these shapes can also be used. The shape of the catheter fixture is preferably a substantially circular shape or a substantially oval shape that allows easy alignment of the catheter and the notch, and is particularly preferably a substantially circular shape.

It is preferable that 3 to 12 notches are provided at intervals of 30 ° to 160 °, and 6 are provided at intervals of 30 ° to 75 °. More preferably, it is formed at -12 locations. The intervals at which the notches are provided may be equal intervals or a plurality of different angle intervals as long as they are within the above angle range, but are preferably provided at equal intervals. By setting the notches at intervals and numbers in the above range, it is easy to align the catheter and the catheter fixture, and even when the catheter fixture is affixed to an uneven or curved part, Since the peripheral edge portion is easily adapted to these parts and the adhesion to the catheter is increased, wrinkles and peeling are less likely to occur in the catheter fixture.
As the angle and the number of intervals at which the notch portions are provided, the modes shown in the embodiments of FIGS. 1 to 6 can be applied, but various modes can be applied according to needs other than these modes. For example, an embodiment in which three notches are formed at intervals of 100 °, 100 °, and 160 °, and six locations at intervals of 75 °, 45 °, 75 °, 45 °, 75 °, and 45 ° And a notch portion. Here, the angle of the interval at which the notch is provided is an adjacent circle or ellipse based on the center of the circle or ellipse, assuming a circle or ellipse in which the centers of all notches are present on the circumference. This is the angular interval between the two notch portions.

As the shape of the cutout portion along the catheter provided on the peripheral edge portion of the substrate, an arc shape, a slit shape, or the like can be used, but an arc shape is preferable. In the case where the notch is formed in an arc shape, it is preferable to form the notch with a semicircular portion of a circle having a radius of 3 to 30 mm from the viewpoint of adhesion to a catheter or the like and handleability. Further, when the base material portion sandwiched between the two arc-shaped cutout portions is viewed as the base edge of the base material and the portion facing it as the lower base, the substantially equal leg having an upper base shorter than the lower base. A trapezoidal shape is particularly preferable. When a traction force is applied to the catheter, the force concentrates on the peripheral edge of the catheter fixture, and the base material is likely to peel off as a result, but such a substantially isosceles trapezoidal part should be provided on the peripheral edge of the base material. As a result, the peripheral edge of the base material is easily brought into close contact with the catheter and the skin, and the fixation of the catheter is enhanced. Furthermore, since there is a substantially isosceles trapezoidal portion at the periphery of the base material, the trapezoidal portion can be picked and peeled when the fixture is peeled off, so that the handleability is good.
The plurality of cutout portions along the catheter provided on the peripheral edge portion of the base material may all have the same shape and size, or may be cutout portions having a plurality of different sizes or shapes.

As the base material of the catheter fixture used in the present invention, a transparent or translucent plastic film that has flexibility and stretchability that can follow the application site and can easily observe the puncture portion of the catheter can be suitably used. For example, polyurethane, polyether polyester, polyamide, polyethylene, polypropylene, acrylic polymer, olefin copolymer and the like can be used. Of these, polyurethane, polyether polyester, polyamide, and the like are particularly preferable because they have good water vapor permeability and do not disturb insensitive transpiration. As a thickness of a plastic film base material, the range of 10-150 micrometers is preferable, and the range of 15-75 micrometers is especially preferable.
In addition to the plastic film, for example, a fiber substrate such as a nonwoven fabric, a knitted fabric, or a woven fabric, and a foam substrate can be used as the catheter fixture base material. It is also possible to use a laminated base material laminated in the same manner. A preferred laminated base material is a laminated base material of a plastic film base material and a fiber base material. In order to facilitate observation of the puncture portion of the catheter and to enhance the fixation of the catheter, the fiber base material is used for the catheter fixture. It is particularly preferable to provide a ring-like portion at the peripheral portion and provide a notch portion for placing the catheter along the fiber base portion. The thickness of the fiber substrate is preferably in the range of 15 to 1,500 μm, particularly preferably in the range of 15 to 500 μm.

As the pressure-sensitive adhesive layer used in the present invention, various pressure-sensitive pressure-sensitive adhesives can be used, and examples thereof include pressure-sensitive pressure-sensitive adhesives such as acrylic, silicone, urethane, vinyl ether, natural rubber, and synthetic rubber. . Among them, acrylic and silicone systems are preferable, and silicone systems having good adhesiveness to silicone and Teflon (registered trademark) catheters are particularly preferable. In addition, when these so-called hydrocolloid adhesives are used, in which hydrophilic polymer compounds such as carboxymethylcellulose, karaya gum, pectin, and gelatin are added to these pressure-sensitive adhesives, they absorb sweat and exudates from the catheter puncture site. This can reduce irritation and rash caused by stuffiness.
The thickness of the pressure-sensitive adhesive layer is preferably 5 to 500 μm, and more preferably 5 to 200 μm. Further, preferably in the range of 10 to 500 g / m ² in terms of the coating weight of the adhesive layer, more preferably in the range of 20 to 150 g / m ^2. When the thickness of the pressure-sensitive adhesive layer and the coating weight are within this range, it exhibits an appropriate pressure-sensitive adhesive force at the time of application, has excellent adhesion and followability to the catheter and the skin, and can obtain good moisture permeability. .

As the pressure-sensitive adhesive protective layer used in the present invention, a known release paper or release film can be used, and a paper or film surface subjected to a silicone resin treatment or a fluorine resin treatment can be used.
Moreover, when using a thin and flexible plastic film as a base material, it is preferable to temporarily attach a support body to the upper surface of a base material. The support used in the present invention may be any support as long as it has a hardness that prevents the occurrence of wrinkling of the substrate when the substrate is affixed, polyethylene, polypropylene, polyamide, ethylene / vinyl acetate copolymer, Plastic materials such as polyester, paper, and non-woven fabric can be used. The support does not necessarily need to cover the entire upper surface of the base material if the base material can be maintained in a fixed state when the base material is applied. The central part can be formed in a non-covered form. As a method for temporarily attaching the support to the substrate, a known method such as adhesion, thermocompression bonding, temporary attachment by coextrusion, or the like can be used.

The catheter fixture of the present invention is provided with a liquid-absorbing pad between the pressure-sensitive adhesive layer and the pressure-sensitive adhesive protective layer in order to absorb blood and exudate from the puncture portion of the catheter and prevent the occurrence of infection. Is preferred. The absorbent pad is preferably formed in a ring shape so that the puncture portion of the catheter can be observed, and provided at the center of the base material so that it can be placed around the puncture portion.
The absorbent pad can be formed from fibers, foams, etc., and preferably has been subjected to antibacterial treatment with an antibacterial agent or the like in order to suppress the growth of bacteria. As the antibacterial agent, known substances such as metal compounds such as zinc, silver and copper, quaternary ammonium compounds, iodine compounds and chlorhexidine gluconate can be used.

As an antibacterial treatment of the absorbent pad, a treatment of adsorbing, kneading, and chemically bonding an antibacterial agent to a fiber or the like can be used, but in a fiber having an anionic functional group, a part of the anionic functional group What processed to form an antibacterial metal salt or a quaternary ammonium salt is preferable.
As the fiber having an anionic functional group, a fiber having a carboxy group such as carboxyalkyl cellulose fiber, polyamide fiber, hair (wool, animal hair, etc.) and silk is preferable, and carboxymethyl cellulose fiber is particularly preferable.
The antibacterial metal salt is preferably a zinc salt, a silver salt, or a copper salt, and particularly preferably a zinc salt that does not discolor the white pad.
The quaternary ammonium salt is preferably a cetylpyridinium salt, a benzalkonium salt, or a benzethonium salt.
The absorbent pad of the present invention has a ring shape, and it is particularly preferable that a zinc salt or a silver salt is formed as an antibacterial metal on the carboxy group of the carboxymethylated cellulose fiber.

The auxiliary strip attached to the peripheral part of the base material of the catheter fixture has a notch for placing the catheter along the peripheral part. By fixing the notch portion of the auxiliary strip and the notch portion of the catheter fixture opposite to each other and fixing the catheter so as to be sandwiched between the recesses of the two notch portions, more reliable fixation is possible. .
The auxiliary strip can be composed of a tape-like thin piece comprising a base material, an adhesive layer, and an adhesive protective layer, and the material is the base material, the adhesive layer, and the adhesive protective layer of the aforementioned catheter fixture. The same materials as used in the above can be used. In addition, the auxiliary strip only needs to have a size and shape that can cover one notch provided on the peripheral edge of the base material of the catheter fixture and the periphery thereof, and is formed in a substantially rectangular shape, boomerang type, or the like. can do.
As the notch for laying the catheter formed on the peripheral edge of the auxiliary strip, one having the same shape and size as the notch provided on the peripheral edge of the base material of the catheter fixture described above can be adopted.

The block diagram of embodiment which concerns on the catheter fixture of this invention. FIG. 2 is a configuration diagram of an embodiment different from FIG. 1 according to the catheter fixture of the present invention. FIG. 2 is a configuration diagram of an embodiment different from FIG. 1 according to the catheter fixture of the present invention. FIG. 2 is a configuration diagram of an embodiment different from FIG. 1 according to the catheter fixture of the present invention. The figure which shows the use condition of the catheter fixture of this invention. The figure which shows the use condition of the catheter fixture of this invention, and an auxiliary | assistant strip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Catheter fixing tool 2 Base material 2a Plastic film base material 2b Fiber base material 3,3a, 3b Adhesive layer 4 Adhesive protective layer 5 The part pinched by the notch part 6 Support body 7 Tab 8 Absorbent pad 9 Catheter 10 Auxiliary strip 20-23,200 Notch

Claims (9)

In a catheter fixture comprising: a base material having a top surface and a bottom surface; an adhesive layer that covers at least a part of the bottom surface of the substrate; and an adhesive protective layer that covers the surface of the adhesive layer and is peelable.
3. A catheter fixture having 3 to 12 notches for placing the catheter along the peripheral edge of the base material at intervals of 30 ° to 160 °. A base material made of a plastic film having an upper surface and a bottom surface, an adhesive layer that covers at least a part of the bottom surface of the base material, an adhesive protective layer that covers and peels the surface of the adhesive layer, and an upper surface of the base material In a catheter fixture comprising a temporarily attached support,
3. A catheter fixture having 3 to 12 notches for placing the catheter along the peripheral edge of the base material at intervals of 30 ° to 160 °.   The catheter fixture according to claim 1 or 2, wherein the notches are formed at intervals of 30 ° to 75 °.   The notch portion is formed by cutting out in an arc shape, and the base material portion sandwiched between the two arc-shaped notch portions is formed in a substantially trapezoidal shape with the base edge of the base material being shorter than the lower base. The catheter fixture according to any one of claims 1 to 3, wherein the catheter fixture is provided.   The catheter fixture according to any one of claims 1 to 4, wherein the catheter fixture has a plurality of notches having different sizes or shapes.   The part or all of the peripheral part of a base material is formed with a fiber base material, The notch part for providing a catheter along a fiber base material is provided, The any one of Claims 1-5 characterized by the above-mentioned. Catheter fixing tool.   The catheter fixture according to any one of claims 1 to 6, wherein the outer shape of the substrate is substantially circular or substantially elliptical.   The catheter fixture according to any one of claims 1 to 7, wherein an absorbent pad is provided between the pressure-sensitive adhesive layer and the pressure-sensitive adhesive protective layer.   The auxiliary strip for attaching to the peripheral part of a base material is further provided, The notch part for running along a catheter to the said peripheral strip is formed in the said auxiliary strip, The any one of Claims 1-8 characterized by the above-mentioned. 2. The catheter fixture according to item 1.

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