KR20220125886A - Endoscopic catheter - Google Patents

Abstract

The present invention relates to an endoscopic catheter, which includes: a guide catheter which has a wire insertion part provided on an outer surface, and a first guide wire channel provided inside from the wire insertion part to a proximal part; and a cannula which is inserted into the proximal part of the guide catheter, and has a second guide wire channel communicating with the first guide wire therein. According to an embodiment of the present invention, the endoscopic catheter may be easily replaced with an instrument.

Description

Endoscopic catheter

The present invention relates to an endoscopic catheter applicable to ERCP.

In general, endoscopic surgery is performed as a relatively less invasive surgical method. In particular, endoscopic retrograde cholangio-pancreatography (hereinafter referred to as 'ERCP') may be performed for treating lesions related to the bile duct or pancreatic duct, such as removing gallstones generated in the bile duct of a patient. .

ERCP is an example for observing and operating the duodenum, papilla (ampulla of Vater), bile duct, gallbladder (galile) and pancreas. After insertion, the cannula is forcibly inserted up to the nipple opening through which bile or pancreatic juice is discharged into the duodenum, and then the sphincterotome provided on the cannula is used to make an incision in the papillary sphincterectomy (EST). ) is implemented.

The endoscopic catheter applicable to such ERCP has a long guide wire method that penetrates the guide wire into the cannula.

In the long guide wire method, when the operator inserts the cannula into the endoscope channel, the assistant discharges the guide wire as the guide wire is also inserted, or when the operator ejects the cannula from the endoscope channel, the assistant discharges the guide wire as well. A cooperative operation of inserting the guide wire is required.

Therefore, the long guide wire method requires breathing and skill of the operator and the assistant, and there is a problem in that it is difficult for the operator to operate the cannula and the guide wire alone.

In addition, the long guide wire method has a problem in that the radiation exposure time increases as the operation time increases.

Domestic Registered Patent Publication No. 10-1396017 (2014.05.09)

The present invention has been devised to solve the above-described problems, and an object of the present invention is to provide an endoscopic catheter that is easy to replace the instrument.

In addition, another object of the present invention is to provide an endoscopic catheter capable of preventing the guide wire from being separated when the instrument is replaced.

In addition, another object of the present invention is to provide an endoscopic catheter capable of reducing medical personnel since the operator can operate the cannula and the guide wire alone during the ERCP procedure.

In addition, another object of the present invention is to provide an endoscopic catheter capable of improving the success rate of cannulation in which an operator alone inserts a cannula into a target point inside a living body.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The endoscopic catheter according to an embodiment of the present invention is provided with a wire insertion portion on the outer surface, the guide catheter is provided with a first guide wire channel from the wire insertion portion to the proximal portion therein; and a cannula connected to the proximal portion of the guide catheter and provided with a second guide wire channel communicating with the first guide wire channel therein.

The wire insertion unit may further include a guide wire sequentially inserted into the first guide wire channel and the second guide wire channel.

In addition, the wire insertion portion may be formed closer to the proximal portion of the guide catheter than the distal portion of the guide catheter.

In addition, the wire insertion part may be formed to be inclined with respect to the first guide wire channel.

In addition, when the guide wire is inserted into the wire insertion part, it may further include a guide for guiding the guide wire to the first guide wire channel.

In addition, the guide part may include an inclined part provided on the inclined surface of the wire insertion part and guiding the guide wire to the first guide wire channel.

In addition, the guide part may include a sealing part connected to the inclined part and sealing the inclined surface of the wire insertion part.

In addition, the diameter of the first section from the proximal portion of the guide catheter to the wire insertion portion may be greater than the diameter of the second section from the distal portion of the guide catheter to the wire insertion portion.

In addition, a diameter from a proximal portion of the first guide wire channel to the wire insertion portion may be greater than a diameter from a distal portion of the first guide wire channel to the wire insertion portion.

In addition, the guide catheter and the cannula may further include an incision wire passing through.

In addition, the incision wire may cut the nipple sphincter adjacent to the nipple opening through which bile or pancreatic juice of the human body is discharged to the duodenum.

In addition, the cutting wire may include a Nitinol material.

In addition, the guide catheter and the cannula may include a flexible material.

In addition, the guide wire may include a rubber, silicone, or urethane material.

Other specific details of the invention are included in the detailed description and drawings.

The endoscopic catheter according to an embodiment of the present invention can be easily replaced with an instrument.

In addition, the endoscopic catheter according to an embodiment of the present invention can prevent separation of the guide wire when replacing the instrument.

In addition, in the endoscopic catheter according to an embodiment of the present invention, since the operator can operate the cannula and the guide wire alone during the ERCP procedure, it is possible to reduce the number of medical personnel.

In addition, the endoscopic catheter according to an embodiment of the present invention can improve the success rate of cannulation in which the operator succeeds in inserting the cannula into the target point inside the living body alone.

Through this, the endoscopic catheter according to an embodiment of the present invention can shorten the ERCP procedure time, it is possible to shorten the radiation exposure time of the operator.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing an endoscopic catheter according to an embodiment of the present invention.
Figure 2 is an enlarged view showing the wire insertion portion of the endoscopic catheter according to an embodiment of the present invention.
3 is a cross-sectional view showing an endoscopic catheter according to an embodiment of the present invention.
4 to 8 are schematic views showing an example of operation of the incision wire of the endoscopic catheter according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

The endoscopic catheter according to an embodiment of the present invention may be applied to endoscopic retrograde cholangio pancreatography (ERCP). For reference, the endoscopic catheter according to an embodiment of the present invention is applicable to other procedures in addition to the ERCP procedure mentioned below, and the present invention is not particularly limited thereto.

In the case of observing a patient's lesion using ERCP, endoscopy and radiation are used. That is, after inserting the endoscope up to the duodenum, a thin tube is inserted into the small hole (the papillary opening (1)) through which bile or pancreatic juice is discharged into the duodenum, and then a drug capable of X-ray imaging is put in, and then a picture is taken. do.

When ERCP is used to operate on a patient's lesion, an endoscope and a sphincterotome are used. That is, after inserting a cannula into the endoscopic channel, the cannula is forcibly inserted to the nipple opening through which bile or pancreatic juice is discharged into the duodenum, and then the endoscopic sphincterectomy (EST) in which the papillary sphincter incision site is incised with a sphincter incision machine provided on the cannula. papillary sphincterotomy) is performed. Here, the sphincter incision may be an incision wire to be described later.

There is a risk of inflammation and secondary complications in the incised nipple area. In order to prevent secondary complications, a plastic stent insertion procedure (ERBD: Endoscopic retrrograde Biliary drainge) is performed.

There are various types of plastic stents, such as a form in which both ends are rolled in the same direction or opposite directions, and a barb is formed at both ends, depending on the purpose or place of operation, and may be formed in a cylindrical shape as a whole.

Such a plastic stent can be inserted into the endoscope channel inserted into the living body while the plastic stent is inserted into the guide catheter or cannula to be operated at a desired location.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a perspective view showing an endoscopic catheter according to an embodiment of the present invention, Figure 2 is an enlarged view showing a wire insertion portion of the endoscopic catheter according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is a cross-sectional view showing an endoscopic catheter along.

1 to 3 , the endoscopic catheter according to an embodiment of the present invention includes a guide catheter 10 , a cannula 20 and a guide wire 30 . Prior to the description of the present invention, one end of the guide catheter 10, the cannula 20 and the guide wire 30 to be inserted into the living body is defined as the proximal portion, and the guide catheter 10, the cannula 20 and the guide wire ( 30) is defined as the distal end.

Overall, the guide catheter 10 is provided with a wire insertion portion 12 on the outer surface, and a first guide wire channel 11 from the wire insertion portion 12 to the proximal portion therein is provided. The cannula 20 is inserted into the proximal portion of the guide catheter 10 , and a second guide wire channel 21 communicating with the first guide wire channel 11 is provided therein. The guide wire 30 is sequentially inserted into the wire insertion part 12 , the first guide wire channel 11 , and the second guide wire channel 21 .

Here, the guide wire 30 is pre-inserted into the endoscope channel 61, and the guide catheter 10 and the cannula 20 are introduced into the endoscope channel 61 along the guide wire 30 pre-inserted into the endoscope channel 61. can be inserted. At this time, when the proximal part of the guide wire 30 is inserted into a specific part of the living body, the guide catheter 10 and the cannula 20 inserted along the guide wire 30 previously inserted into the endoscope channel 61 are also internally embedded in the living body. It can be inserted into a specific site of In this case, the specific part of the living body may be the nipple opening 1 through which bile or pancreatic juice is discharged into the duodenum.

After the cannula 20 is connected to the proximal part of the guide catheter 10, the guide catheter 10 and the cannula 20 are inserted into the endoscope channel 61 in advance along the guide wire 30 via the endoscope channel 61. It can be inserted into a specific site of the living body.

Hereinafter, when describing the structure of the guide catheter 10 , the wire insertion part 12 is provided on the outer surface of the guide catheter 10 . The guide wire 30 may be inserted into the first guide wire channel 11 through the wire insertion part 12 .

The guide catheter 10 and the cannula 20 may be made of a flexible material. Accordingly, bending of the guide catheter 10 and the cannula 20 may be facilitated.

Inside the guide catheter 10 is provided with a first guide wire channel 11 which is respectively formed in a hollow. The first guide wire channel 11 may be formed along the longitudinal direction of the guide catheter 10 . In addition, the guide wire 30 is inserted into the first guide wire channel 11 .

The wire insertion portion 12 may be formed closer to the proximal portion of the guide catheter 10 than the distal portion of the guide catheter 10 . Since the portion where the guide wire 30 is inserted in the guide catheter 10 is from the wire insertion portion 12 to the proximal portion of the guide catheter 10, the wire insertion portion 12 is a guide catheter than the distal portion of the guide catheter 10. When formed close to the proximal portion of (10), the length of the guide wire 30 to be inserted into the guide catheter (10) is shortened. As a result, when the guide catheter 10 moves along the guide wire 30 inserted in advance into the endoscope channel 61, the contact area between the guide catheter 10 and the guide wire 30 becomes small, so the guide catheter 10 ) can be easily inserted along the guide wire 30 .

The wire insertion part 12 may have a shape cut obliquely with respect to the first guide wire channel 11 . Accordingly, the guide wire 30 can be easily inserted along the inclined surface of the wire insertion part 12 .

The cannula 20 is inserted into the proximal portion of the guide catheter 10 , and a hollow second guide wire channel 21 may be formed inside the cannula 20 . The guide wire 30 may be inserted into the second guide wire channel 21 .

The cannula 20 may be provided with an incision wire 50 for incision of the papillary sphincter through which bile or pancreatic juice is discharged into the duodenum. The cutting wire 50 will be described later.

Additionally, the cannula 20 may be provided with a plastic stent (not shown) for ERBD.

The guide wire 30 is pre-inserted into the endoscope channel 61 to guide the insertion path of the catheter and the cannula 20 . The proximal portion of the guide wire 30 may be forcibly inserted into a specific part of the living body. At this time, the guide catheter 10 and the cannula 20 inserted along the guide wire 30 are guided to a specific part of the living body. can be Additionally, the guide wire 30 is directional along with the role of a support for intubation of the bile duct or pancreatic duct, reaching a specific target intrahepatic bile duct, or passing through a stenosis site, and then replacing an instrument necessary for performing a targeted diagnostic and therapeutic procedure. It can also play a role in suggesting Here, the device may be a plastic stent, a biopsy, a cutter, a prosthesis, forceps, and the like. Such an instrument may be provided in the proximal portion of the guide catheter 10 or in the proximal portion of the cannula 20 .

The guide wire 30 may be made of a soft material such as rubber, silicone, urethane, etc. so as not to damage the inner wall of the bile pancreatic duct, but the present invention is not particularly limited thereto.

The guide wire 30 is sequentially inserted into the wire insertion part 12 , the first guide wire channel 11 , and the second guide wire channel 21 . In other words, the guide wire 30 is inserted into a part of the guide catheter 10 and penetrates the cannula 20 . That is, the guide wire 30 is inserted into a part of the guide catheter 10 and the cannula 20 in a very short length.

As the existing guide wire penetrates through the entire guide catheter and the cannula, when the cannula is inserted into the endoscope channel, the guide wire is also attached and inserted, so when the assistant discharges the guide wire, or when the operator discharges the cannula from the endoscope channel As the guide wire was also discharged, it was necessary to cooperate with an assistant to insert the guide wire.

Accordingly, the guide wire 30 according to an embodiment of the present invention is inserted into a part of the guide catheter 10 and penetrates through the cannula 20 as a whole. Accordingly, when inserting or discharging the cannula 20, the guide wire 30 is also not inserted or discharged.

That is, as the conventional guide wire 30 penetrates through the entire guide catheter 10 and the cannula 20, when the cannula 20 is inserted into the endoscope channel 61, the guide wire 30 is also inserted. Accordingly, when the assistant discharges the guide wire 30, or when the operator discharges the cannula 20 from the endoscope channel 61, the guide wire 30 is also attached and discharged, so the assistant inserts the guide wire 30. Although work was required, the present invention allows the operator to operate the cannula 20 and the guide catheter 10 alone.

In addition, as the guide wire 30 according to an embodiment of the present invention penetrates through the entire cannula 20, when inserting or discharging the cannula 20 into the endoscope channel 61, the guide wire from the cannula 20 (30) can be prevented from falling out.

The guide wire 30 according to an embodiment of the present invention is a guide part for guiding the guide wire 30 to the first guide wire channel 11 when the guide wire 30 is inserted into the wire insertion part 12 . (40) may be further included.

The guide part 40 may include an inclined part 41 and a sealing part 42 .

The inclined portion 41 is provided on the inclined surface of the wire insertion portion 12 and serves to guide the guide wire 30 to the first guide wire channel 11 . Specifically, the inclined portion 41 has an inclined surface corresponding to the inclined surface of the wire insertion portion 12 , and the guide wire 30 is guided to the first guide wire channel 11 along the inclined surface of the inclined portion 41 . can be

The sealing part 42 is connected to the inclined part 41 and seals the inclined surface of the wire insertion part 12 . The sealing part 42 may be press-fitted to the inclined surface of the wire inserting part 12 to seal the inclined surface of the wire inserting part 12 .

On the other hand, the diameter of the first section 13 from the proximal portion of the guide catheter 10 to the wire insertion section 12 is the diameter of the second section 14 from the distal section of the guide catheter 10 to the wire insertion section 12. It may be larger than the diameter. Therefore, the operator can easily insert the guide wire 30 along the relatively large diameter of the first section 13 of the guide catheter (10). In addition, the diameter of the second section 14 from the distal portion of the guide catheter 10 to the wire insertion section 12 is the diameter of the first section 13 from the proximal section of the guide catheter 10 to the wire insertion section 12 . Since it is smaller than the diameter, it is possible to reduce the weight of the guide catheter 10 . Meanwhile, the diameter of the first section 13 preferably has a diameter corresponding to the diameter of the guide wire 30 , but the present invention is not particularly limited.

4 to 8 are schematic views showing an example of operation of the incision wire of the endoscopic catheter according to an embodiment of the present invention.

As shown in Figures 4 to 8, the incision wire 50 may be penetrated through the catheter to be retractable or withdrawable along the longitudinal direction of the catheter. The incision or withdrawal of the cutting wire 50 may be performed by an adjustment member (not shown). For example, the adjusting member may be an actuator for retracting or withdrawing the distal portion of the cutting wire 50 or an adjustment knob for rotating a screw on which the distal portion of the cutting wire 50 is wound.

The material of the cutting wire 50 may be nitinol. Nitinol is formed into Nitinol when nickel and titanium are combined in the correct ratio. Nitinol is a unique shape-memory alloy with the ability to remember a specified shape and return to its previous shape after being deformed when exposed to a predetermined temperature.

Such an adjustment member may be electrically connected to an electric cauterizer (not shown). The electric cauterizer may supply electrical energy to the cutting wire 50 through the adjusting member. At this time, the incision wire 50 may use the electrical energy supplied from the electric cauterizer to cut the incision portion of the living body. On the other hand, the electric cauterizer uses the principle of generating a short spark or heat without giving an electric shock or stimulation to the muscle when a high-frequency current passes through the human body, and uses the principle of generating a 300 kHz to 3 MHz, 1 to 10 kV waveform with an incision wire (50). It may be a medical device used to cut a part of a human tissue during a surgical operation by delivering it, and to prevent or reduce bleeding that occurs during surgery.

The proximal portion of the incision wire 50 penetrates the inner surface of the cannula 20 and is coupled to the outer surface of the cannula 20 while being exposed to the outside of the cannula 20 .

Accordingly, when the adjusting member pulls the distal portion of the incision wire 50 , as a tensile force is applied to the proximal portion of the incision wire 50 , the proximal portion of the incision wire 50 tensions and bends the cannula 20 . This , the proximal portion of the incision wire 50 moves in a direction away from the outer circumferential surface of the cannula 20 and maintains tension, so that a wide area can be resected through the proximal portion of the incision wire 50 .

Hereinafter, an operation example of the incision wire 50 of the endoscopic catheter according to an embodiment of the present invention will be described.

First, as shown in FIG. 4, the endoscope 60 is inserted up to a position close to a specific part of the living body. In this case, the specific part of the living body may be the nipple opening 1 through which bile or pancreatic juice is discharged into the duodenum.

Next, before inserting the guide catheter 10 and the cannula 20 into the endoscope channel 61, the guide wire 30 is inserted into the wire insertion part 12 of the guide catheter 10 and the first guide wire channel 11 ) and the second guide wire channel 21 of the cannula 20 are sequentially inserted.

Then, while the guide catheter 10 and the cannula 20 are connected, the guide wire 30 is passed through the guide catheter 10 and the cannula 20 and is inserted along the endoscope channel 61 .

Subsequently, the guide catheter 10 and the cannula 20 are inserted along the guide wire 30 inserted into the endoscope channel 61 . At this time, the guide wire 30 is inserted into a part of the guide catheter 10 (the wire insertion part 12 and the first guide wire channel 11) and the cannula 20 (the second guide wire channel 21). When the cannula 20 is inserted or discharged along the guide wire 30 inserted into the endoscope channel 61, the guide wire 30 is also inserted or discharged. Therefore, the operator can operate the cannula 20 and the guide catheter 10 alone.

And, as shown in FIG. 5, the adjusting member pulls the distal part of the incision wire 50, and through this, the proximal part of the incision wire 50 tensions the cannula 20 and bends the cannula 20, thereby bending the cannula. The proximal portion of (20) is directed toward a specific part of the living body.

Next, while the guide catheter 10 and the cannula 10 are in a stopped state, the guide wire 30 is additionally inserted so that the proximal portion of the guide wire 30 is inserted into a specific part of the living body.

And, as shown in FIG. 6, the guide wire 30 is in a stopped state, and the guide catheter 10 and the cannula 20 are additionally inserted along the guide wire 30 put into the endoscope channel 61. , the proximal part of the cannula 20 is inserted into a specific part of the living body.

Next, as shown in FIG. 7 , when the adjusting member further pulls the distal part of the incision wire 50 , the proximal part of the incision wire 50 moves away from the outer peripheral surface of the cannula 20 and the living body incision is made in a specific area of

In this case, the incision wire 50 may electrically cut the incision site of the living body by applying the current supplied from the electric cauterizer. In this case, the incision site of the living body may be a papillary sphincter incision site through which bile or pancreatic juice is discharged into the duodenum.

Next, as shown in FIG. 8 , the guide wire 30 is discharged along the guide wire 30 inserted into the endoscope channel 61 through the guide catheter 10 and the cannula 20 in a stopped state.

The endoscopic catheter according to an embodiment of the present invention is inserted into a part of the guide catheter 10 while the guide wire 30 penetrates the cannula 20 . Therefore, since the length of the guide wire 30 inserted into the guide catheter 10 and the cannula 20 is very short, the guide catheter 10 and the cannula 20 can be quickly moved along the guide wire 30 . have. Therefore, when replacing the instrument provided at the proximal part of the guide catheter 10 or the cannula 20 inserted into the living body, the guide catheter 10 and the cannula 20 can be quickly discharged to the outside of the living body.

As a result, the endoscopic catheter according to an embodiment of the present invention can be easily replaced.

In addition, the endoscopic catheter according to an embodiment of the present invention can prevent separation of the guide wire when replacing the instrument.

In addition, the endoscopic catheter according to an embodiment of the present invention, since the operator can operate the cannula and the guide wire alone during the ERCP procedure, it is possible to reduce the number of medical personnel.

In addition, the endoscopic catheter according to an embodiment of the present invention can improve the success rate of cannulation in which the operator succeeds in inserting the cannula into the target point inside the living body alone.

Through this, the endoscopic catheter according to an embodiment of the present invention can shorten the ERCP procedure time, it is possible to shorten the radiation exposure time of the operator.

In the above, the embodiments of the present invention have been described with reference to the accompanying drawings, but those skilled in the art to which the present invention pertains know that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Papillary opening through which bile or pancreatic juice is drained into the duodenum
10: guide catheter
11: first guide wire channel
12: wire insert
13: Section 1
14: 2nd section
20: cannula
21: second guide wire channel
30: guide wire
40: information department
41: inclined part
42: sealing part
50: incision wire
60: endoscope
61: endoscope channel

Claims (14)

a guide catheter provided with a wire insertion portion on the outer surface and provided with a first guide wire channel from the wire insertion portion to the proximal portion therein; and
Endoscopic catheter connected to the proximal portion of the guide catheter, characterized in that it comprises a cannula provided with a second guide wire channel communicating with the first guide wire channel therein.
According to claim 1,
The endoscopic catheter comprising a guide wire sequentially inserted into the wire insertion unit, the first guide wire channel, and the second guide wire channel.
According to claim 1,
The wire insertion unit,
Endoscopic catheter, characterized in that formed closer to the proximal portion of the guide catheter than the distal portion of the guide catheter.
According to claim 1,
The wire insertion unit,
Endoscopic catheter, characterized in that formed inclined with respect to the first guide wire channel.
5. The method of claim 4,
When the guide wire is inserted into the wire insertion part, the endoscopic catheter further comprising a guide for guiding the guide wire to the first guide wire channel.
6. The method of claim 5,
The guide is
Endoscopic catheter, characterized in that it is provided on the inclined surface of the wire insertion portion and comprises an inclined portion for guiding the guide wire to the first guide wire channel.
7. The method of claim 6,
The guide is
Endoscope catheter, characterized in that it comprises a sealing portion connected to the inclined portion and sealing the inclined surface of the wire insertion portion.
According to claim 1,
An endoscopic catheter, characterized in that the diameter of the first section from the proximal portion of the guide catheter to the wire insertion section is larger than the diameter of the second section from the distal section of the guide catheter to the wire insertion section.
According to claim 1,
An endoscopic catheter, characterized in that a diameter from the proximal portion of the first guide wire channel to the wire insertion portion is larger than a diameter from the distal portion of the first guide wire channel to the wire insertion portion.
According to claim 1,
Endoscopic catheter, characterized in that it further comprises an incision wire passing through the guide catheter and the cannula.
10. The method of claim 9,
The cutting wire is
Endoscopic catheter, characterized in that the incision of the papillary sphincter adjacent to the nipple opening through which bile or pancreatic juice of the human body is discharged to the duodenum.
12. The method of claim 11,
The cutting wire is
Endoscopic catheter, characterized in that it comprises a Nitinol material.
3. The method of claim 2,
The guide catheter and the cannula,
Endoscopic catheter, characterized in that it comprises a flexible material.
3. The method of claim 2,
The guide wire is
Endoscopic catheter, characterized in that it comprises a rubber, silicone or urethane material.

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