KR102152574B1 - Composition for Foley Catheter - Google Patents

Abstract

The present invention relates to a composition used to manufacture a poly catheter that is inserted into the human body, and consists of a material in which a carbon nanotube and a zinc oxide (ZnO) are bonded to a carbon nanotube polymer (CNT Polymer) is mixed with silicon, The carbon nanotube polymer is blended in an amount of 1.0 to 2.2 parts by weight based on 100 parts by weight of silicone.

Description

Composition for Foley Catheter {Composition for Foley Catheter}

The present invention relates to a composition for manufacturing a foley catheter to be inserted into a living body.

In general, patients with systemic or lower body paralysis caused by cerebral diseases such as stroke or spinal injury are increasing year by year due to an increase in the elderly population and a rapid increase in traffic accidents or industrial accidents.

In the above patients, bladder paralysis is inevitably accompanied, and treatment for bladder paralysis depends entirely on the patient's prognosis, and as a treatment for such patients, a Foley Catheter is maintained in the bladder to drain urine to the outside. do.

In the Foley catheter, the foley is bonded to the distal end of the tubular catheter body, so that the poly is inflated by the fluid flowing from the outside to have a balloon shape, so that the catheter is maintained in the bladder.

In the case of the conventional antibiotic catheter, the invasion of bacteria has been suppressed by applying an antibiotic drug or a substance to a poly catheter made of silicone. This is caused by antibiotics in the early stage, but due to the nature of the catheter, the urinary tract is intubated for more than 2 to 3 days, so biofilm formation inevitably occurs.

Due to the generation of such a biofilm, the antibiotic effect of the foley catheter decreases or disappears, causing complications such as urinary tract infection, and there is a problem that the hospitalization period is prolonged due to treatment for this.

In addition, in conventional Foley catheter, because antibiotics or substances applied to the surface are always retained in the fastening, kidney failure occurs in about 40% of all patients due to urinary tract infection and stone formation, which is the biggest cause of death for these patients. Became.

On the other hand, in order to solve the above problems of the antibiotic catheter, there are products coated with an antimicrobial material such as gold, silver or silver nano on the catheter, but when used for a certain period of time or longer, the coated antibacterial material is peeled off and the antibacterial property is reduced.

Since the recognition of the problems and problems of the prior art described above is not self-evident to those of ordinary skill in the technical field of the present invention, it is not necessary to judge the progress of the present invention compared to the prior art based on this recognition. Reveal it.

An object of the present invention is to provide a composition for manufacturing a foley catheter that has improved antibacterial properties and allows antimicrobial properties to be maintained even for long-term use.

The composition used to manufacture a poly catheter inserted into the human body according to an embodiment of the present invention is a material in which a carbon nanotube and a zinc oxide (ZnO) bonded carbon nanotube polymer (CNT Polymer) are mixed with silicon. Consisting of, the carbon nanotube polymer is blended in an amount of 1.0 to 2.2 parts by weight based on 100 parts by weight of silicone.

According to an embodiment of the present invention, a separate antibiotic material by constituting the catheter body and the catheter poly as a material in which a carbon nanotube polymer (CNT Polymer) in which carbon nanotubes and zinc oxide (ZnO) are bonded is mixed with silicon. It is possible to inhibit the formation of a biofilm, which is the root of bacterial infection, without application or coating.

In addition, it has the effect of maintaining antibacterial properties by maintaining the induction of the biopotential effect of the carbon nanotube polymer uniformly in the poly, thereby mutating bacteria confining to the poly into inactive.

In addition, the catheter poly according to the present invention does not have side effects such as resistance of antibiotics, and its life is determined according to the electrostatic amount of the carbon nanotube polymer, and due to the high thermal conduction characteristic of the carbon nanotube, the human body It has the effect of minimizing patient rejection during the implantation process, reducing additional replacement costs and preventing an increase in medical costs due to infection.

The effect of the present invention described above is only one of the various effects according to the present invention, and the present invention can be realized in various forms according to the application method of the embodiment.

1 is a perspective view showing the configuration of a foley catheter according to an embodiment of the present invention.
2 is a cross-sectional view showing an example of the cross-sectional configuration of the foley catheter shown in FIG. 1.
3 to 8 are diagrams showing experimental results on the effect of inhibiting biofilm formation of a foley catheter and a material constituting the catheter foley.
9 is a view showing the results of an experiment for explaining the effect of reducing foreign body feeling when a material constituting a foley catheter and a catheter foley is inserted into the human body.
10 is a view for explaining the configuration and operation of the catheter pulley according to an embodiment of the present invention.
11 is a view showing in more detail an embodiment of the configuration of the catheter poly according to the present invention.
12 to 16 are cross-sectional views showing examples of the cross-sectional configuration of the catheter poly shown in FIG. 11.

Hereinafter, with reference to the accompanying drawings, a foley catheter, a catheter foley, and methods of manufacturing or forming them according to an embodiment of the present invention will be described in detail.

The above objects, features, and advantages of the present invention will become more apparent through the following detailed description in conjunction with the accompanying drawings. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numbers throughout the specification denote the same elements. In addition, when it is determined that detailed descriptions of known functions or configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

1 is a perspective view showing a configuration of a foley catheter according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line BB shown in FIG. 1 as showing an example of a cross-sectional configuration of a foley catheter. .

The catheter according to an embodiment of the present invention may be a urethral catheter for discharging urine in the patient's bladder, and a urine inlet and inflatable poly are installed on one side of the catheter body, and the catheter body It may be a Foley catheter having a structure in which the main tube located at the center communicates with the urine discharge part located on the other side of the main body to discharge urine in the patient's bladder.

However, the catheter and the catheter poly according to an embodiment of the present invention may be applied to various catheters such as cardiovascular catheter in addition to the urethral catheter as described above.

1 and 2, the poly catheter comprises a catheter body 100, which is a tubular tube, and a catheter poly 200 bonded to the catheter body 100 so as to be expandable by a fluid flowing from the outside. Can be.

More specifically, the catheter body 100 has one end 50 blocked, and a urine passage 110 through which urine moves and a fluid passage 120 and 121 through which the fluid moves may be formed therein, respectively.

In addition, the urine inlet 11 is formed by being connected to the urine passage 110 of the catheter body 100, and the fluid outlet 21 may be connected to the fluid passages 120 and 121 of the catheter body 100.

In FIG. 2, a catheter and a catheter poly according to an embodiment of the present invention have been described as an example in which one urine passage 110 and two fluid passages 120 and 121 are formed in the catheter body 100. The present invention is not limited thereto.

For example, a single fluid passage may be formed in the catheter body 100, and a three-way method other than a two-way catheter as shown in FIG. 1 In the case of the catheter, apart from the urine passage 110, a drug passage (not shown) for introducing drugs may be additionally provided.

The fluid passages 120 and 121 as described above are connected to the fluid outlet 21, respectively, so that the fluid flowing from the outside through the fluid inlet 23 passes through the fluid passages 120 and 121 and the fluid outlet 21. Through the catheter poly 200 can be delivered to the bonded portion.

Here, the fluid may be a gas such as air or a liquid such as saline.

The catheter poly 200 is made of a material that can expand or contract as fluid is introduced, and may be bonded to the catheter body 100 while surrounding the fluid outlet 21 formed in the catheter body 100.

Poly catheter and catheter poly according to an embodiment of the present invention having the configuration as described with reference to FIGS. 1 and 2 is composed of a material in which a carbon nanotube polymer (CNT Polymer) is mixed with silicon, It can inhibit the formation of a biofilm that is the root of bacterial infection without application or coating of antibiotics.

Carbon nanotubes (CNTs) are cylindrical crystals made by carbon atoms, with a diameter of 2 to 20 nm (1 nm is 1/1,000,000 m) and a length of hundreds to thousands of nm. In a carbon nanotube, one carbon atom forms a hexagonal honeycomb pattern by sp2 bonding with three other carbon atoms around it, and this tube is called a nanotube because its diameter is extremely small, about several nanometers (nm).

In addition, the carbon nanotube polymer (CNT Polymer) is a polymer in which carbon nanotubes (CNT) and zinc oxide (ZnO) are combined, and carbon nanotubes (CNT) and zinc oxide (ZnO) are polymerized in the same ratio with each other, or Zinc oxide (ZnO) may be polymerized at a higher ratio than carbon nanotubes (CNT), and vice versa may be possible if necessary.

The catheter body 100 constituting the catheter according to an embodiment of the present invention may be composed of a material blended with 1.0 to 2.2 parts by weight of a carbon nanotube polymer relative to 100 parts by weight of silicone, but the blending ratio is dependent on the functionality of the catheter. May be variable.

According to the present invention, the carbon nanotube polymer, which is a constituent of the catheter body 100, has a constant capacitance in response to the intubated human potential, such that this capacitance is harmless to the human body, but has a fatal electrostatic effect on bacteria and biofilms (Galvanic effect) to minimize the formation of biofilm, and due to the high thermal conductivity of carbon nanotubes, it is possible to minimize the rejection of the person in the process of insertion into the human body.

In addition, in the case of a catheter coated or coated with an existing antibiotic, it cannot be used for more than one week due to biofilm formation and bacterial infection, but the poly catheter according to the present invention is a carbon nanotube polymer (CNT ploymer) having the same effect as described above. As is added to the silicone, it may have a service life of at least 4-5 weeks.

According to an embodiment of the present invention, the carbon nanotube (CNT) may be a multi-walled carbon nanotube (MWNT), which is used in a solid state of the multi-walled carbon nanotube (MWNT). This is because it has an advantage and is highly likely to be commercialized in terms of price.

As described above, the poly catheter and the catheter poly according to an embodiment of the present invention each contain a carbon nanotube (CNT) and a zinc oxide (ZnO) bonded carbon nanotube polymer (CNT Polymer) as shown in Formula 1 below. It can be composed of a material blended in silicone.

In Formula 1, m, n, and p represent the number of molecules of silicon, zinc oxide (ZnO), and carbon nanotubes (CNT), respectively, where m is 50 to 300, n is 7 to 30, p is in the range of 10 to 50 It may have, but the present invention is not limited thereto.

Meanwhile, in the catheter and the catheter poly, the m, n, and p may be set to be different from each other.

In addition, the catheter body 100 and the catheter poly 200 for constituting the catheter according to an embodiment of the present invention are, respectively, a carbon nanotube polymer in which a carbon nanotube (CNT) and zinc oxide (ZnO) are bonded ( CNT Polymer) and silicone may be formed into a tube-shaped tube by extruding a gel-like material mixed in a certain ratio.

Here, the material may be formed by compounding silicon nanotubes (CNT) and zinc oxide (ZnO) dispersed using a chemical vapor deposition method (CVD composite), and, for example, a pressure of 1,000,000 Pa and 50 It can be prepared through a dispersion process of about 30 minutes at a temperature condition of °C.

Accordingly, a carbon nanotube polymer composed of carbon nanotubes (CNT) and zinc oxide (ZnO) can be uniformly added to silicon, and accordingly, the catheter made of the material and the catheter poly are uniform regardless of position. It can have antibacterial properties.

Hereinafter, the effect of inhibiting biofilm formation of the material constituting the poly catheter and the catheter poly according to an embodiment of the present invention will be described with reference to FIGS. 3 to 8.

3 to 5 are CV (Crystal Violet) method after incubating E. Coli. (Escherichia Coli.), which is a major urinary tract infection, for 3, 5, and 7 days, respectively, in a catheter section made of the above-described material. This is the result of testing the degree of biofilm formation using.

Referring to FIG. 3, after incubating E. Coli. (Escherichia Coli.) for 3 days, when the mixing ratio of zinc oxide (ZnO) is 0%, the average value of absorbance was measured as 0.303, and zinc oxide (ZnO ), the average value of absorbance was measured as 0.326 when the mixing ratio of) was 1%, and when the mixing ratio of zinc oxide (ZnO) was 2%, the average value of absorbance was measured as 0.252, and the mixing ratio of zinc oxide (ZnO) In the case of 3%, the average value of absorbance was measured to be 0.299.

Referring to FIG. 4, after incubating E. Coli. (Escherichia Coli.) for 5 days, when the mixing ratio of zinc oxide (ZnO) is 0%, the average value of absorbance was measured as 0.362, and zinc oxide (ZnO ), the average value of absorbance was measured as 0.380 when the mixing ratio of) was 1%, and when the mixing ratio of zinc oxide (ZnO) was 2%, the average value of absorbance was measured as 0.356, and the mixing ratio of zinc oxide (ZnO) In the case of 3%, the average value of absorbance was measured to be 0.448.

Referring to FIG. 5, after incubating E. Coli. (Escherichia Coli.) for 7 days, when the mixing ratio of zinc oxide (ZnO) is 0%, the average value of absorbance was measured as 0.486, and zinc oxide (ZnO ), the average value of absorbance was measured as 0.425 when the mixing ratio of) was 1%, and when the mixing ratio of zinc oxide (ZnO) was 2%, the average value of absorbance was measured as 0.407, and the mixing ratio of zinc oxide (ZnO) In the case of 3%, the average value of absorbance was measured to be 0.413.

6 is a graph showing the above experimental results for each experimental substance, and FIG. 7 is a graph showing the above experimental results according to incubation time.

According to the experimental results shown in FIGS. 3 to 6, in the case of a material in which silicon and carbon nanotubes (CNT) are mixed (zinc oxide (ZnO) 0%), the average value of the absorbance rapidly increases over time, and thus Accordingly, it can be seen that the formation of biofilm is increased.

On the other hand, in the case of a material in which 1% zinc oxide (ZnO) is mixed with silicon and carbon nanotubes (CNT), the absorbance is higher than that of a material in which silicon and carbon nanotubes (CNT) are mixed (zinc oxide (ZnO) 0%). It can be seen that the average value of is gradually increased, so that the formation of the biofilm is somewhat suppressed.

In addition, in the case of a material in which 2% of zinc oxide (ZnO) is mixed with silicon and carbon nanotubes (CNT), a material in which silicon and carbon nanotubes (CNT) are mixed (zinc oxide (ZnO) 0%) and zinc oxide ( It can be seen that the average value of absorbance is generally lower than in the case of the material containing 1% ZnO), and accordingly, the effect of inhibiting biofilm formation against E. Coli. (Escherichia Coli.), a major urinary tract infection, is clearly shown.

And, in the case of a material containing 5% zinc oxide (ZnO) in silicon and carbon nanotubes (CNT), the average value of absorbance when cultured for 7 days was rather lower than before, indicating that the effect of inhibiting biofilm formation by long-term use appeared. I can.

Judging on the basis of the above experimental results, when a catheter and a catheter poly are composed of a material containing about 2% zinc oxide (ZnO) in silicon and carbon nanotubes (CNT), E. Coli, a major urinary tract infection bacteria .(Escherichia Coli.) can stably achieve the inhibitory effect of biofilm formation.

FIG. 8 is a photograph of the experimental result by incubating E. Coli. (Escherichia Coli.) in a material having a mixing ratio of zinc oxide (ZnO) of 1% for 7 days, and then using a scanning electron microscope (SEM). .

Referring to Figure 8, even after 7 days culture, E. Coli. It can be seen that the bacteria do not clump together to form a biofilm.

In addition, referring to the experimental results shown in Table 1 below, the material constituting the catheter and the catheter poly according to an embodiment of the present invention, the E. Coli. In addition to bacteria, it can be seen that staphylococcus, pneumonia, Escherichia coli, and Pseudomonas aeruginosa have a sterilization reduction rate of 99.9% or more and a bacteriostatic reduction rate.

On the other hand, the catheter and the catheter poly configured as described above can minimize the patient's rejection in the process of inserting the human body due to high heat conduction, which is a characteristic of carbon nanotubes.

FIG. 9 shows the experimental results for explaining the effect of reducing foreign body sensation when the material constituting the poly catheter and the catheter poly is inserted into the human body, and FIG. 9 (a) is the thermal conduction of the catheter made of silicon without carbon nanotubes. It is a photograph, and (b) of FIG. 9 is a thermal conduction photograph of a catheter made of silicon containing carbon nanotubes.

Referring to FIGS. 9A and 9B, it can be seen that in the case of a catheter made of silicon in which carbon nanotubes are internalized, the temperature distribution is evenly displayed due to high thermal conduction.

10 is a diagram illustrating the configuration and operation of a catheter poly according to an embodiment of the present invention, and a description of the same as described with reference to FIGS. 1 to 9 among the illustrated configurations will be omitted below. do.

Referring to FIG. 10, a urine inlet 11 and a catheter poly 200 are formed in the catheter body 100 so as to be adjacent to one end 50 inserted into the bladder among the foley catheter.

When a fluid (eg, air or saline) is introduced from the fluid inlet 23 installed on the other side of the catheter, the catheter poly 200 may expand to have the shape of a balloon.

For example, fluid may be introduced by injecting a fluid into a syringe or the like in advance, inserting a syringe needle into the inlet hole 22, which is the end of the fluid inlet 23, and compressing the syringe.

In the state where the catheter poly 200 formed to be adjacent to one end 50 of the catheter body 100 is inserted into the bladder, through the fluid passages 120 and 121 and the fluid outlet 21 from the fluid inlet 23 As the fluid flows into the catheter poly 200, the catheter poly 200 swells in a balloon shape and is spread over the bladder neck 60 to fix the catheter in the bladder.

Meanwhile, a urine passage 110 connected to the urine inlet 11 is formed in the center of the cross section of the catheter body 100, and a urine discharge portion 13 is formed at the end of the urine passage 110.

For example, urine generated in the urethra flows into the urine passage 110 through the urine inlet 11 located in the urethra, and then the discharge hole 12, which is the end of the urine discharge part 13 located outside the urethra. It can be discharged through.

11 is an enlarged view showing an embodiment of the configuration of the catheter poly according to the present invention in more detail, showing an enlarged portion of the poly catheter shown in FIGS. 1 and 11 to which the catheter poly 200 is bonded will be.

Referring to FIG. 11, bonding surfaces 210 and 211 for bonding with the catheter body 100 are formed at both ends of the catheter poly 200, and the catheter poly 200 is formed on the catheter body 100. In the process of forming, the bonding surfaces 210 and 211 may be adhered to the catheter body 100 using an adhesive.

Hereinafter, a method of manufacturing a foley catheter and a method of forming a catheter poly according to an embodiment of the present invention will be described with reference to FIG. 11.

First, as described above, the catheter body 100 is produced by extruding a material in which a carbon nanotube polymer (CNT Polymer) combined with a carbon nanotube and zinc oxide (ZnO) is combined with silicon into a tubular tube.

In addition, a material in which carbon nanotubes and zinc oxide (ZnO) are bonded to a carbon nanotube polymer (CNT Polymer) mixed with silicon is extruded or injected into a tubular tube to produce a catheter poly (200).

Here, the mixing ratio of the carbon nanotube, zinc oxide (ZnO) or carbon nanotube polymer of the material for producing the catheter body 100, and the carbon nanotube and zinc oxide of the material for producing the catheter poly 200 The mixing ratio of (ZnO) or carbon nanotube polymer may be different.

For example, when the catheter poly 200 is expanded by a fluid flowing from the outside, the surface area increases, and accordingly, the distribution of the carbon nanotube polymer per unit area decreases, and the antibacterial activity may decrease.

As described above, when the catheter poly 200 expands and the antibacterial activity decreases, even if the formation of a biofilm in the catheter body 100 is suppressed, a biofilm is formed in the catheter poly 200 with reduced antibacterial activity, which may cause bacterial infection. have.

According to an embodiment of the present invention, the blending ratio of the carbon nanotube polymer of the catheter poly 200 is preferably higher than the blending ratio of the carbon nanotube polymer of the catheter body 100, and accordingly, the catheter poly 200 is Even if it expands, the distribution of the carbon nanotube polymer per unit area has the same or similar range as that of the catheter body 100, so that a uniform antibacterial force can be maintained regardless of the position of the foley catheter.

Assuming that the catheter poly 200 expands and the surface area increases by about 4 to 6 times, as described above, the catheter body 100 is a material blended with 1.0 to 2.2 parts by weight of a carbon nanotube polymer relative to 100 parts by weight of silicone. When configured, the catheter poly 200 may be composed of a material blended with 4.0 to 13.2 parts by weight of a carbon nanotube polymer relative to 100 parts by weight of silicone in proportion to the increase in surface area.

On the other hand, in the case of the catheter poly 200, it may be preferable that the values of n and m in Formula 1 are increased in proportion to the increase in surface area when the catheter poly 200 is expanded.

After the catheter body 100 and the catheter poly 200 are prepared, the bonding surfaces 210 and 211 of the catheter poly 200 are adhered to the catheter body 100, and urine on one end of the catheter body 100 A foley catheter can be manufactured by forming a tip with an inlet 11.

Poly catheter manufacturing method and catheter poly forming method according to an embodiment of the present invention may further include additional steps such as a drying step in addition to the steps described above, a separate step for an additional configuration to be described below May be added.

12 to 16 are cross-sectional views showing examples of the cross-sectional configuration of the catheter poly shown in FIG. 11.

12 is a cross-sectional view showing a cross-sectional view taken along the CC line shown in FIG. 11, showing a structure in which the catheter body 100 is provided with a urine passage 110 and a fluid passage 120, 121 and a catheter poly 200 surrounds the catheter body 100 Can have.

Here, as described above, when the catheter poly 200 is manufactured using a material having a higher mixing ratio of the carbon nanotube polymer than the catheter main body 100, the catheter body 100 and the catheter poly Current can flow until there is no potential difference between 200.

This is because zinc oxide (ZnO) creates a high potential, and current flows from the catheter poly 200 to the catheter body 100 at the portions in contact with each other, between the catheter body 100 and the catheter poly 200 When the potential difference disappears, when the catheter poly 200 expands, the electrostatic capacity is lowered, and the antibacterial activity may decrease.

In order to prevent current from flowing from the catheter poly 200 to the catheter main body 100 as above, an insulating layer 900 is formed between the catheter main body 100 and the catheter poly 200 as shown in FIG. Can be formed.

The insulating layer 900 may be formed of a gas such as an air layer or a sterilizing gas layer (eg, EO gas), or a carbon nanotube coating layer having a high concentration.

By preventing the current from flowing from the catheter poly 200 to the catheter body 100 by the insulating layer 900, a potential difference according to the difference in the mixing ratio of the carbon nanotube polymer can be maintained, thereby maintaining the catheter poly Even when the 200 is inflated, antibacterial activity may be maintained in the same or similar range as the catheter body 100.

As shown in FIG. 13, the catheter body 100 and the catheter poly (the catheter body 100 and the catheter poly) are formed in the process of forming the catheter poly 200 so that the insulating layer 900 is formed between the catheter body 100 and the catheter poly 200. 200), or a step of performing EO gas treatment or high concentration carbon nanotube coating treatment on the outer surface of the catheter body 100 may be added.

FIG. 14 is a cross-sectional view taken along line D-D shown in FIG. 11 and shows a cross-sectional structure of a portion of the bonding surface 210 to which the catheter poly 200 is bonded to the catheter body 100.

Referring to FIG. 14, an insulating film 1000 may be formed on the bonding surface 210 to which the catheter poly 200 is bonded to the catheter body 100.

This is, when the adhesive used to bond the bonding surface 210 of the catheter poly 200 to the catheter body 100 has conductivity, the bonding surface 210 due to a potential difference according to the difference in the carbon nanotube polymer mixing ratio. Since current may flow from the catheter poly 200 to the catheter body 100 through ), the current is to be blocked by using the insulating film 1000.

For example, the insulating film 1000 is a carbon nanotube insulating film, and may be formed by coating a high-concentration carbon nanotube on the bonding surface 210. When the catheter poly 200 is expanded, the surface area is naturally increased. It may be dismantled.

It is preferable that the insulating film 1000 as shown in FIG. 14 is also applied to a cardiovascular catheter.

FIG. 15 is a cross-sectional view taken along the line E-E shown in FIG. 11 and shows a cross-sectional structure of a portion in which the fluid outlet 21 is formed.

Referring to FIG. 15, fluid outlets 21a and 21b may be formed at positions corresponding to each of the two fluid passages 120 and 121 formed in the catheter body 100 to communicate with each other.

Accordingly, the fluid introduced from the outside moves through the fluid passages 120 and 121 of the catheter body 100 and then flows out to the catheter poly 200 through the fluid outlets 21a and 21b to be used for the catheter. The poly 200 is expanded by the pressure of the fluid.

16 is a cross-sectional view showing the catheter poly 200 in an expanded state.

Referring to FIG. 16, as described above, the mixing ratio of the carbon nanotube polymer of the catheter poly 200 is greater than the mixing ratio of the carbon nanotube polymer of the catheter body 100 so as to be proportional to the increase ratio of the surface area during expansion. In addition, the electrostatic capacity of the catheter poly 200 is maintained the same or similar to the catheter body 100 so that the antibacterial force of the poly catheter may be uniform.

Although not separately shown in the drawings, steps according to the manufacturing method may be added or reduced according to the type or function of the catheter or catheter poly according to the present invention.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. Various modifications can be implemented by a person having knowledge of, of course, these modifications should not be individually understood from the technical idea or perspective of the present invention.

Claims (3)

In the composition used to manufacture the catheter body among the foley catheter consisting of a catheter body and a catheter poly,
A carbon nanotube polymer (CNT Polymer) in which carbon nanotubes and zinc oxide (ZnO) are bonded is composed of a material blended with silicon, and the carbon nanotube polymer is blended in an amount of 1.0 to 2.2 parts by weight based on 100 parts by weight of silicon,
The mixing ratio of the carbon nanotube polymer in the catheter body is
Poly catheter composition, characterized in that lower than the blending ratio of the carbon nanotube polymer of the catheter poly bonded to the catheter body so as to be expandable by a fluid flowing from the outside. The method of claim 1, wherein the carbon nanotubes
Multi-walled carbon nanotubes (Multi-Walled Carbon Nanotube, MWNT) poly catheter composition. The method of claim 1,
Poly catheter composition consisting of dispersed carbon nanotubes and zinc oxide (ZnO) in silicon.

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