CN111481806A - Multi-stage duodenal papilla dilatation balloon catheter - Google Patents

Multi-stage duodenal papilla dilatation balloon catheter Download PDF

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Publication number
CN111481806A
CN111481806A CN202010393201.8A CN202010393201A CN111481806A CN 111481806 A CN111481806 A CN 111481806A CN 202010393201 A CN202010393201 A CN 202010393201A CN 111481806 A CN111481806 A CN 111481806A
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CN
China
Prior art keywords
channel
balloon
pipe
drainage pipe
catheter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010393201.8A
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Chinese (zh)
Inventor
张�诚
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Shanghai East Hospital Tongji University Affiliated East Hospital
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Shanghai East Hospital Tongji University Affiliated East Hospital
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Publication date
Application filed by Shanghai East Hospital Tongji University Affiliated East Hospital filed Critical Shanghai East Hospital Tongji University Affiliated East Hospital
Priority to CN202010393201.8A priority Critical patent/CN111481806A/en
Publication of CN111481806A publication Critical patent/CN111481806A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1011Multiple balloon catheters
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1018Balloon inflating or inflation-control devices
    • A61M25/10181Means for forcing inflation fluid into the balloon
    • A61M25/10182Injector syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02Dilators made of swellable material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/10Balloon catheters
    • A61M25/1011Multiple balloon catheters
    • A61M2025/1013Multiple balloon catheters with concentrically mounted balloons, e.g. being independently inflatable

Abstract

The invention provides a multi-stage duodenal papilla dilating balloon catheter which comprises a balloon group, a catheter, an injection molding connector and a connecting pipe joint, wherein the balloon group is connected with the catheter through the connecting pipe joint; the balloon group comprises a first balloon, a second balloon and a third balloon; the catheter comprises a first drainage pipe section, a second drainage pipe section, a third drainage pipe section, a fourth drainage pipe section and a fifth drainage pipe section; a first channel is arranged in the first drainage pipe section; a second channel and a third channel are arranged in the second drainage pipe section; a fourth channel, a fifth channel and a sixth channel are arranged in the third drainage pipe section; a seventh channel, an eighth channel, a ninth channel and a tenth channel are arranged in the fourth drainage pipe section; the fifth drainage pipe section is an extension pipe of the fourth drainage pipe section; the connecting pipe joint comprises a first connecting joint, a second connecting joint, a third connecting joint and a fourth connecting joint; and each channel in the fifth drainage pipe section is connected with a corresponding connector. The invention can enlarge the effective expansion range of the nipple sphincter, avoid the occurrence of tearing and bleeding nipple, has small requirement on pressure and simple operation.

Description

Multi-stage duodenal papilla dilatation balloon catheter
Technical Field
The invention relates to the technical field of minimally invasive medical technology and surgical instruments, in particular to a multi-stage duodenal papilla dilatation balloon catheter which is a duodenoscope minimally invasive surgical instrument used for dilating duodenal papilla sphincter or biliary tract system stenosis diseases.
Background
Common bile duct stones are common diseases and frequently encountered diseases in China, the stones block common bile ducts to induce complications such as acute cholangitis, obstructive jaundice and acute cholangiogenic pancreatitis, the symptoms such as shivering, fever, abdominal pain and jaundice appear, serious patients even cause shock, and long-term stone stimulation has the risk of bile duct cancer, so that the common bile duct stones are important diseases which harm human health. Endoscopic Retrograde Cholangiopancreatography (ERCP) is widely used as a first-line method for the treatment of choledocholithiasis due to its advantages of small trauma, rapid recovery, few contraindications, etc.
Endoscopic retrograde duodenal papilla balloon dilatation is one of the conventional technical means of therapeutic ERCP, and mechanical dilatation is performed on duodenal papilla sphincter to temporarily enlarge the papilla opening so as to conveniently place instruments such as a calculus removal basket, a biliary tract stent and the like and easily discharge common bile duct calculus, crushed stone, biliary mud, bile and the like.
Present clinical application's duodenum breast sacculus pipe all takes the design of single sacculus, can divide into two kinds according to the difference of expansion diameter, and fixed diameter is taken to one of them sacculus, and a type sacculus pipe can only expand nipple to a fixed diameter, and variable diameter sacculus is taken to another kind of sacculus, through increasing sacculus pressure, can increase 2mm with sacculus expansion diameter, and this kind of sacculus requires highly to the material of sacculus membrane, and the cost of manufacture is great. In addition, when carrying out great sacculus expansion, at the injection contrast medium in-process, the sacculus both ends are sufficient earlier, because the extrusion of nipple sphincter is concave in the middle of the sacculus, along with the increase of sacculus pressure, concave sacculus is sufficient fast, can lead to the nipple sphincter to tear, and the tear speed is very fast moreover, takes place the papillary hemorrhage easily.
Disclosure of Invention
The duodenal milk sacculus catheter for clinical application at present adopts a single sacculus design, and can be divided into two types according to different expansion diameters, wherein one sacculus adopts a fixed diameter, one type of sacculus catheter can only expand a nipple to a fixed diameter, the other type of sacculus adopts a variable-diameter sacculus, the expansion diameter of the sacculus can be increased by 2mm by increasing the pressure of the sacculus, and the sacculus has high requirements on the material of a sacculus membrane and higher manufacturing cost; in addition, when carrying out great sacculus expansion, at the injection contrast medium in-process, the sacculus both ends are sufficient earlier, because the extrusion of nipple sphincter is concave in the middle of the sacculus, along with the increase of sacculus pressure, concave sacculus is sufficient fast, can lead to the nipple sphincter to tear, and the tear speed is very fast moreover, takes place the technical problem that the nipple bleeds easily, and provides a multistage duodenal papilla expansion sacculus pipe. The invention mainly utilizes the design of multiple balloons to enlarge the effective expansion range of the papillary sphincter; the sacculus is fixed in an intussusception mode, each sacculus is gradually filled from inside to outside, the duodenal papilla sphincter can be gradually expanded step by step, and the risk of bleeding caused by rapid tearing of the papilla sphincter is reduced; one side of the fifth drainage tube section is bent in an arc shape, so that the physiological angle between duodenum and common bile duct is met, uniform stress of duodenal papilla sphincter is easily exerted, and the condition that the 12-point papilla is excessively pressed by the balloon to promote papilla tearing bleeding can be avoided.
The technical means adopted by the invention are as follows:
a multi-stage duodenal papilla dilatation balloon catheter comprises a balloon group, a catheter, an injection molding connector and a connecting pipe joint, wherein the injection molding connector is connected with the catheter;
the balloon group comprises a first balloon, a second balloon and a third balloon which are sequentially overlapped, two ends of the first balloon, the second balloon and the third balloon are conical, and a middle body is cylindrical; the first balloon has a length less than a length of the second balloon, which is less than a length of the third balloon; the head ends of the first balloon, the second balloon and the third balloon are flush and are fixed on the catheter through a first metal ring; the tail ends of the first balloon, the second balloon and the third balloon are respectively fixed on the catheter through a second metal ring, a third metal ring and a fourth metal ring;
the catheter comprises a first drainage pipe section, a second drainage pipe section, a third drainage pipe section, a fourth drainage pipe section and a fifth drainage pipe section which are sequentially communicated;
the first drainage pipe section is a single-channel pipe, a first channel is arranged in the first drainage pipe section, and a guide wire is placed in the first channel;
the second drainage tube section is a double-channel tube, is attached to the first balloon, is internally provided with a second channel and a third channel communicated with the first channel, the head end of the second channel is a blind end, and is communicated with the first balloon through a first side hole formed in the tube wall of the second drainage tube section; the attached first balloon is that the outer wall of the second drainage tube section is sleeved with the first balloon;
the third drainage pipe section is a three-channel pipe, and a fourth channel, a fifth channel communicated with the second channel and a sixth channel communicated with the third channel are arranged in the third drainage pipe section; the third drainage tube section and the second drainage tube section are attached to the second balloon together, the head end of the fourth channel is a blind end, and the third drainage tube section and the second drainage tube section are communicated with the second balloon through a second side hole formed in the tube wall of the third drainage tube section; the third drainage tube section and the second drainage tube section are jointly attached with the second balloon, namely the third drainage tube section and the outer wall of the second drainage tube section are jointly sleeved with the second balloon;
the fourth drainage pipe section is a four-channel pipe, and a seventh channel, an eighth channel communicated with the fourth channel, a ninth channel communicated with the fifth channel and a tenth channel communicated with the sixth channel are arranged in the fourth drainage pipe section; the fourth drainage tube section, the second drainage tube section and the third drainage tube section are attached to the third balloon together, the head end of the seventh channel is a blind end, and the head end of the seventh channel is communicated with the third balloon through a third side hole formed in the tube wall of the fourth drainage tube section; the fourth drainage tube section, the second drainage tube section and the third drainage tube section are attached with the third balloon together, namely the fourth drainage tube section, the second drainage tube section and the third drainage tube section are sleeved with the third balloon together;
the fifth drainage pipe section is an extension pipe of the fourth drainage pipe section, is a four-channel pipe, and is internally provided with the seventh channel, the eighth channel, the ninth channel and the tenth channel; one side of the fifth drainage pipe section, which is connected with the fourth drainage pipe section, is bent in an arc shape, and the bending included angle theta is 45 degrees; the other side of the fifth drainage pipe section is connected with the injection molding connector; the included angle between the bent straight pipes on the fourth drainage pipe section and the fifth drainage pipe section is 45 degrees;
the connecting pipe joint comprises a first connecting joint, a second connecting joint, a third connecting joint and a fourth connecting joint which are all single-channel joints; the seventh channel, the eighth channel, the ninth channel and the tenth channel are respectively connected with the third connector, the second connector, the first connector and the fourth connector.
Further, the outer diameter of the pipe body of the guide pipe is 7-8.5 Fr; the total length of the catheter is 180 cm.
Further, the diameter of the first channel is 1 mm.
Further, the diameters of the second channel, the fourth channel and the seventh channel which are respectively connected with the balloons are equal and are all 0.3 mm.
Further, the first balloon is 3cm in length, the second balloon is 3.5cm in length, and the third balloon is 4cm in length;
the expanded diameters of the first, second and third balloons are 6mm, 8mm and 10mm, or 10mm, 12mm and 14mm, or 14mm, 16mm and 18mm, or 18mm, 20mm and 22mm, respectively.
The blind end refers to the head end of the water injection and air injection channel which is L-shaped and is connected with the sacculus cavity through a side hole arranged on the pipe wall of the conduit.
Compared with the prior art, the invention has the following advantages:
1. the multi-stage duodenal papilla dilatation balloon catheter provided by the invention adopts a multi-balloon design, and increases the effective dilatation range of the papilla sphincter.
2. According to the multi-stage duodenal papilla dilating balloon catheter provided by the invention, the balloons are fixed in an intussusception mode, and each balloon is gradually filled from inside to outside, so that gradual dilation of the duodenal papilla sphincter can be realized, and the risk of rapid tearing bleeding of the papilla sphincter is reduced.
3. According to the multistage duodenal papilla dilatation balloon catheter provided by the invention, one side of the fifth drainage tube section is bent in an arc shape, an angle of 45 degrees is formed between the bent straight tubes on the balloon section drainage tube section and the fifth drainage tube section of the extension section, so that the physiological angle between duodenum and common bile duct is met, uniform stress of duodenal papilla sphincter is facilitated, and the phenomenon that the papilla is torn and bleeding is promoted due to over-compression of the balloon on the 12-point part of the papilla is avoided.
4. According to the multi-stage duodenal papilla dilating balloon catheter provided by the invention, each balloon has a fixed diameter, the dilating diameter can be achieved under a small pressure, the pressure requirement is low, the operation is simple, and the manufacturing cost is low.
In conclusion, the technical scheme of the invention can solve the problems that the duodenal milk sacculus catheter clinically applied in the prior art adopts a single sacculus design and can be divided into two types according to different expansion diameters, wherein one sacculus adopts a fixed diameter, one type of sacculus catheter can only expand a nipple to a fixed diameter, the other type of sacculus adopts a variable-diameter sacculus, the expansion diameter of the sacculus can be increased by 2mm by increasing the pressure of the sacculus, and the sacculus has high requirements on the material of a sacculus membrane and higher manufacturing cost; in addition, when carrying out great sacculus expansion, at the injection contrast medium in-process, the sacculus both ends are sufficient earlier, because the extrusion of nipple sphincter is concave in the middle of the sacculus, along with the increase of sacculus pressure, concave sacculus is sufficient fast, can lead to the nipple sphincter to tear, and the tearing speed is very fast moreover, takes place the problem of papillary hemorrhage easily.
Based on the reasons, the invention can be widely popularized in the fields of minimally invasive medical technology, surgical instruments and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a multi-stage duodenal papilla dilatation balloon catheter in an embodiment of the invention.
Fig. 2 is a cross-sectional view taken along line a-a of fig. 1.
Fig. 3 is a cross-sectional view taken along line B-B of fig. 1.
Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.
Fig. 5 is a schematic view of a multi-stage duodenal papilla dilating balloon catheter in an operating state (first balloon inflated) according to an embodiment of the present invention.
Fig. 6 is a schematic view of a multi-stage duodenal papilla dilating balloon catheter in an operating state (with the first and second balloons inflated) in accordance with an embodiment of the present invention.
Fig. 7 is a schematic view of a multi-stage duodenal papilla dilating balloon catheter in an operating state (the first balloon, the second balloon and the third balloon are inflated) in accordance with an embodiment of the present invention.
In the figure: 1. a first drain tube section; 2. a second drain tube section; 3. a third drain tube section; 4. a fourth drainage tube section; 5. a fifth drainage tube section; 6. injection molding a connector; 7. connecting a pipe joint; 8. a first balloon; 9. a syringe or pressure pump; 10. a second balloon; 11. a third balloon;
21. a second channel; 22. a third channel;
31. a fourth channel; 32. a fifth channel; 33. a sixth channel;
41. a seventh channel; 42. an eighth channel; 43. a ninth channel; 44. a tenth channel;
71. a first connection joint; 72. a second connector; 73. a third connector; 74. and a fourth connector.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 7, the present invention provides a multi-stage duodenal papilla dilatation balloon catheter, which comprises a balloon group, a catheter, an injection-molded connector 6 connected with the catheter and a connecting pipe joint 7, wherein the catheter is connected with the connecting pipe joint 7 through the injection-molded connector 6;
the balloon group comprises a first balloon 8, a second balloon 10 and a third balloon 11 which are sequentially nested, two ends of the first balloon 8, the second balloon 10 and the third balloon 11 are respectively in a conical shape, and a middle body is in a cylindrical shape; the length of the first balloon 8 is smaller than the length of the second balloon 10, and the length of the second balloon 10 is smaller than the length of the third balloon 11; the head ends of the first balloon 8, the second balloon 10 and the third balloon 11 are flush and are all fixed on the catheter through a first metal ring; the tail ends of the first balloon 8, the second balloon 10 and the third balloon 11 are respectively fixed on the catheter through a second metal ring, a third metal ring and a fourth metal ring;
the catheter comprises a first drainage pipe section 1, a second drainage pipe section 2, a third drainage pipe section 3, a fourth drainage pipe section 4 and a fifth drainage pipe section 5 which are sequentially communicated;
the first drainage pipe section 1 is a single-channel pipe, a first channel is arranged in the first drainage pipe section, and a guide wire is placed in the first channel;
the second drainage tube section 2 is a double-channel tube, is attached to the first balloon 8, and is internally provided with a second channel 21 and a third channel 22 communicated with the first channel, the head end of the second channel 21 is a blind end and is communicated with the first balloon 8 through a first side hole formed in the tube wall of the second drainage tube section 2; the attached first balloon 8 is that the outer wall of the second drainage tube section 2 is sleeved with the first balloon 8;
the third drainage pipe section 3 is a three-channel pipe, and a fourth channel 31, a fifth channel 32 communicated with the second channel 21 and a sixth channel 33 communicated with the third channel 22 are arranged in the third drainage pipe section; the third drainage tube section 3 and the second drainage tube section 2 are attached to the second balloon 10 together, the head end of the fourth channel 31 is a blind end, and the head end is communicated with the second balloon 10 through a second side hole formed in the tube wall of the third drainage tube section 3;
the fourth drainage pipe section 4 is a four-channel pipe, and a seventh channel 41, an eighth channel 42 communicated with the fourth channel 31, a ninth channel 43 communicated with the fifth channel 32, and a tenth channel 44 communicated with the sixth channel 33 are arranged in the fourth drainage pipe section; the fourth drainage tube section 4, the second drainage tube section 2 and the third drainage tube section 3 are attached to the third balloon 11 together, the head end of the seventh channel 41 is a blind end, and the head end is communicated with the third balloon 11 through a third side hole formed in the tube wall of the fourth drainage tube section 4;
the fifth drainage pipe section 5 is an extension pipe of the fourth drainage pipe section 4, is a four-channel pipe, and is internally provided with the seventh channel 41, the eighth channel 42, the ninth channel 43 and the tenth channel 44; one side of the fifth drainage pipe section 5, which is connected with the fourth drainage pipe section 4, is bent in an arc shape, and the bending included angle theta is 45 degrees; the other side of the fifth drainage pipe section 5 is connected with the injection molding connecting body 6; the included angle between the bent straight pipes on the fourth drainage pipe section 4 and the fifth drainage pipe section 5 is 45 degrees;
the connecting pipe joint 7 comprises a first connecting joint 71, a second connecting joint 72, a third connecting joint 73 and a fourth connecting joint 74 which are single-channel joints; the seventh channel 41, the eighth channel 42, the ninth channel 43, and the tenth channel 44 are respectively connected to the third connector 73, the second connector 72, the first connector 71, and the fourth connector 74. Wherein, four channels are arranged in the injection molding connecting body 6; the seventh channel 41, the eighth channel 42, the ninth channel 43 and the tenth channel 44 respectively penetrate through the right end parts of the four channels of the injection molding connector 6 and are respectively directly connected with the third connector 73, the second connector 72, the first connector 71 and the fourth connector 74; or, the seventh channel 41, the eighth channel 42, the ninth channel 43, and the tenth channel 44 are respectively communicated with the four channels of the injection molding connector 6, the right ends of the four channels of the injection molding connector 6 are respectively connected with the third connector 73, the second connector 72, the first connector 71, and the fourth connector 74, and at this time, the seventh channel 41, the eighth channel 42, the ninth channel 43, and the tenth channel 44 are respectively indirectly connected with the third connector 73, the second connector 72, the first connector 71, and the fourth connector 74 through the four channels of the injection molding connector 6. The injection-molded connector 6 is a polyethylene-molded structure, and the fifth drainage pipe section 5 of the catheter has four channels therein, so that the injection-molded connector 6 can be divided into individual catheters.
The outer diameter of the pipe body of the conduit is 7-8.5 Fr; the total length of the catheter is 180cm, i.e. the length of the entire catheter of the first to fifth drainage tube sections 1 to 5 is 180 cm.
The diameter of the first channel is 1 mm.
The diameters of the second channel 21, the fourth channel 31 and the seventh channel 41 respectively connected with each balloon are equal and are all 0.3 mm.
The first balloon 8 is 3cm in length, the second balloon 10 is 3.5cm in length, and the third balloon 11 is 4cm in length; the expanded diameters of the first balloon 8, the second balloon 10 and the third balloon 11 are 6mm, 8mm and 10mm, or 10mm, 12mm and 14mm, or 14mm, 16mm and 18mm, or 18mm, 20mm and 22mm, respectively.
When the choledochus cannula and papillary sphincter are slightly cut, a guide wire is placed in a choledochus, when the choledochus cannula is used, the guide wire is placed in a first channel of the choledochus cannula, is led out through a fourth connector 74, is placed in a duodenal papilla through a duodenoscope forceps channel under guidance, and is sequentially injected with a contrast medium through the first connector, the second connector 72 and the third connector 73, so that the first balloon 8, the second balloon 10 and the third balloon 11 are sequentially filled, and the duodenal papillary sphincter is gradually expanded. By adopting the scheme of gradually expanding the duodenal papilla, the invention can increase the expansion range of the sphincter of the duodenal papilla, reduce the incidence rate of papilla tearing bleeding and has low manufacturing cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. The multi-stage duodenal papilla dilatation balloon catheter is characterized by comprising a balloon group, a catheter, an injection molding connector (6) connected with the catheter and a connecting pipe joint (7), wherein the catheter is connected with the connecting pipe joint (7) through the injection molding connector (6);
the balloon group comprises a first balloon (8), a second balloon (10) and a third balloon (11) which are sequentially overlapped, two ends of the first balloon (8), the second balloon (10) and the third balloon (11) are conical, and a middle body is cylindrical; the length of the first balloon (8) is smaller than the length of the second balloon (10), the length of the second balloon (10) is smaller than the length of the third balloon (11); the head ends of the first balloon (8), the second balloon (10) and the third balloon (11) are flush and are fixed on the catheter through a first metal ring; the tail ends of the first balloon (8), the second balloon (10) and the third balloon (11) are respectively fixed on the catheter through a second metal ring, a third metal ring and a fourth metal ring;
the catheter comprises a first drainage pipe section (1), a second drainage pipe section (2), a third drainage pipe section (3), a fourth drainage pipe section (4) and a fifth drainage pipe section (5) which are communicated in sequence;
the first drainage pipe section (1) is a single-channel pipe, a first channel is arranged in the first drainage pipe section, and a guide wire is placed in the first channel;
the second drainage tube section (2) is a double-channel tube, is attached to the first balloon (8), is internally provided with a second channel (21) and a third channel (22) communicated with the first channel, the head end of the second channel (21) is a blind end, and is communicated with the first balloon (8) through a first side hole formed in the tube wall of the second drainage tube section (2);
the third drainage pipe section (3) is a three-channel pipe, and a fourth channel (31), a fifth channel (32) communicated with the second channel (21) and a sixth channel (33) communicated with the third channel (22) are arranged in the third drainage pipe section; the third drainage tube section (3) and the second drainage tube section (2) are attached to the second balloon (10) together, the head end of the fourth channel (31) is a blind end, and the head end is communicated with the second balloon (10) through a second side hole formed in the tube wall of the third drainage tube section (3);
the fourth drainage pipe section (4) is a four-channel pipe, and is internally provided with a seventh channel (41), an eighth channel (42) communicated with the fourth channel (31), a ninth channel (43) communicated with the fifth channel (32) and a tenth channel (44) communicated with the sixth channel (33); the fourth drainage tube section (4), the second drainage tube section (2) and the third drainage tube section (3) are attached to the third balloon (11) together, the head end of the seventh channel (41) is a blind end, and the head end of the seventh channel is communicated with the third balloon (11) through a third side hole formed in the tube wall of the fourth drainage tube section (4);
the fifth drainage pipe section (5) is an extension pipe of the fourth drainage pipe section (4) and is a four-channel pipe, and the seventh channel (41), the eighth channel (42), the ninth channel (43) and the tenth channel (44) are arranged in the fifth drainage pipe section; one side of the fifth drainage pipe section (5) connected with the fourth drainage pipe section (4) is bent in an arc shape, and the bending included angle theta is 45 degrees; the other side of the fifth drainage pipe section (5) is connected with the injection molding connecting body (6); the included angle between the bent straight pipes on the fourth drainage pipe section (4) and the fifth drainage pipe section (5) is 45 degrees;
the connecting pipe joint (7) comprises a first connecting joint (71), a second connecting joint (72), a third connecting joint (73) and a fourth connecting joint (74), which are all single-channel joints; the seventh channel (41), the eighth channel (42), the ninth channel (43) and the tenth channel (44) are respectively connected with the third connector (73), the second connector (72), the first connector (71) and the fourth connector (74).
2. The multi-stage duodenal papilla dilatation balloon catheter according to claim 1, wherein the outer diameter of the catheter tube is 7-8.5 Fr; the total length of the catheter is 180 cm.
3. The multi-stage duodenal papilla dilation balloon catheter of claim 1 or 2, wherein the first channel is 1mm in diameter.
4. The multi-stage duodenal papilla dilatation balloon catheter according to claim 1 or 2, characterized in that the second channel (21), the fourth channel (31) and the seventh channel (41) connected with each balloon are equal in diameter and 0.3mm each.
5. The multi-stage duodenal papilla dilatation balloon catheter of claim 4, characterized in that the first balloon (8) is 3cm in length, the second balloon (10) is 3.5cm in length, and the third balloon (11) is 4cm in length;
the expanded diameters of the first balloon (8), the second balloon (10) and the third balloon (11) are 6mm, 8mm and 10mm, or 10mm, 12mm and 14mm, or 14mm, 16mm and 18mm, or 18mm, 20mm and 22mm, respectively.
CN202010393201.8A 2020-05-11 2020-05-11 Multi-stage duodenal papilla dilatation balloon catheter Pending CN111481806A (en)

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CN202010393201.8A CN111481806A (en) 2020-05-11 2020-05-11 Multi-stage duodenal papilla dilatation balloon catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

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CN111481806A true CN111481806A (en) 2020-08-04

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Family Applications (1)

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CN202010393201.8A Pending CN111481806A (en) 2020-05-11 2020-05-11 Multi-stage duodenal papilla dilatation balloon catheter

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