CN109646792A - A kind of biliary stent - Google Patents
A kind of biliary stent Download PDFInfo
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- CN109646792A CN109646792A CN201910137202.3A CN201910137202A CN109646792A CN 109646792 A CN109646792 A CN 109646792A CN 201910137202 A CN201910137202 A CN 201910137202A CN 109646792 A CN109646792 A CN 109646792A
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- 210000000941 bile Anatomy 0.000 claims abstract description 172
- 238000003860 storage Methods 0.000 claims abstract description 64
- 210000003445 biliary tract Anatomy 0.000 claims abstract description 58
- 210000003928 nasal cavity Anatomy 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 56
- 238000010992 reflux Methods 0.000 claims description 19
- 238000002955 isolation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 4
- 238000000338 in vitro Methods 0.000 abstract description 8
- 230000029087 digestion Effects 0.000 abstract description 7
- 210000000232 gallbladder Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 210000001198 duodenum Anatomy 0.000 description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- 210000000013 bile duct Anatomy 0.000 description 4
- 238000007459 endoscopic retrograde cholangiopancreatography Methods 0.000 description 3
- 210000001331 nose Anatomy 0.000 description 3
- 208000006766 bile reflux Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
- A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1042—Alimentary tract
- A61M2210/1075—Gall bladder
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Otolaryngology (AREA)
- External Artificial Organs (AREA)
Abstract
The application provides a kind of biliary stent, including conduit, bile storage bag and joint assembly.Wherein, the conduit is connected to bile storage bag by joint assembly, drain the bile in biliary tract can by the drainage lumens in conduit in vitro, is stored in bile storage bag；And when needing re-injection, bile is back to by enteron aisle by the back cavity in conduit, participates in digestion.The conduit collects hole and bile relief hole, the independent collection and release for carrying out bile, consequently facilitating conduit is placed in the patient by the way that drainage lumens and back cavity are built in the same pipeline, and by the bile on different location.Also, it can solve the problems, such as that traditional drainage pipe is not easy to be placed in the patient in order to by patient's nasal cavity.
Description
Technical field
This application involves the field of medical instrument technology more particularly to a kind of biliary stents.
Background technique
Biliary stent is common biliary drainage instrument in ERCP operation (through endoscopic retrograde cholangiopancreatography).?
In surgical procedure, on the one hand, by duodenoscope, biliary stent is placed in the predetermined position in patient's bile duct；Another party
Face, biliary stent will be by the nasal cavities of patient, or directly through tissue, and it is external to extend to patient, by blockage in bile duct
The bile of position or diseased region is drained, and pressure of biliary tract is alleviated.
Existing biliary stent is divided into three classes, and one is drainage tube, i.e., is drawn bile from biliary tract by drainage pipe
It flow to external；Secondly being inner drainage tube, that is, passes through drainage pipe for bile from biliary drainage to enteron aisle, participate in it in enteron aisle
Food digestion process；Thirdly being inside-and-outside drainage, also referred to as " drainage-feedback pipe ", i.e., by drainage pipe, by bile first from gallbladder
Road drains in vitro, then is fed back to enteron aisle.The drainage tube directly abandons after going out biliary drainage in vitro, will cause gallbladder
Juice cannot be introduced into enteron aisle, influence digestion process.And biliary drainage is directly entered enteron aisle by inner drainage tube, is unfavorable for the pressure to biliary tract
Power control, does not meet normal physiology digestion process yet.Therefore, bile loss can be reduced, and bile flow meets normally
The inside-and-outside drainage of digestion process has more use value in clinic.
Fig. 1 shows a kind of typical inside-and-outside drainage, returns including the drainage tube a1 to external drainage bile and into enteron aisle
Infuse the return pipe a2 of bile.The drainage tube a1 and return pipe a2 is seperated conduit, can be distributed side by side or inner and outer pipes are nested
Mode be distributed.The drainage tube a1 and return pipe a2 is distal end in one end close to biliary tract, and the other end is proximal end.The drainage
The proximal end of pipe a1 and return pipe a2 are designed with connector a3, for connecting bile storage bag.
Wherein, the proximal end of two root canal of the drainage tube a1 and return pipe a2 needs outside by nasal cavity lead body, drainage tube a1
Distal end need enter biliary tract inside, and the distal end of return pipe a2 need enter enteron aisle inside.As it can be seen that using seperated conduit,
In ERCP surgical procedure, needs medical staff while operating two root canals, be not easy to be placed in the patient.In addition, drainage tube a1
Two connector a3 are respectively equipped with the proximal end of return pipe a2, are also not easy to the nasal cavity space narrow by patient, are further hindered
It is placed in the patient.
Summary of the invention
This application provides a kind of biliary stents, to solve traditional biliary stent needs while operate drainage tube and returning
Flow tube is not easy to the problem of being placed in the patient.
The application provides a kind of biliary stent, comprising: conduit and joint assembly, wherein conduit is for draining and returning
Infuse bile；The nasal cavity end of the detachably connected conduit of joint assembly；The conduit is integral type double lumen tube；
The catheter interior is equipped with mutually isolated drainage lumens and back cavity；The conduit on the tube wall at biliary tract end,
Hole is collected equipped with the bile for being connected to the drainage lumens；On the tube wall of the conduit, it is additionally provided with and is connected to the bile of the back cavity and releases
Discharge hole；The bile collects hole and bile relief hole interval is arranged.
Optionally, the end that the back cavity is located at conduit biliary tract end is enclosed construction, passes through institute to avoid bile
The end for stating back cavity enters the back cavity.
Optionally, the conduit is fixed to warp architecture close to the part at biliary tract end, to adapt to biliary tract shape.
Optionally, the biliary stent further includes bile storage bag, for storing the bile gone out from biliary drainage；It is described
Bile storage bag connects the conduit by the joint assembly.
Optionally, the joint assembly includes being connected on the supravasal backflow fittings and flow sub；
The backflow fittings are connected to the back cavity, and the flow sub is connected to the drainage lumens, to draw in progress bile
When stream and reflux, different bile flows is provided.
Optionally, the backflow fittings include the backflow fittings main body of three-port structure, and are screwed onto the flow sub
Two first sealing nuts at main body both ends；
The conduit runs through the backflow fittings main body, and the inner cavity of the backflow fittings main body is connected to the back cavity；Institute
State the first sealing ring for being equipped in backflow fittings main body and contacting two the first sealing nuts respectively.
Optionally, the backflow fittings further include refluxing opening and impregnator, the refluxing opening and the backflow fittings main body
It is an integral structure；The refluxing opening is connected to bile storage bag by impregnator, and the bile in the bile storage bag is taken out
It takes to the inner cavity of the backflow fittings main body.
Optionally, the flow sub includes flow sub main body, and is screwed onto flow sub main body one end
Second sealing nut；
The flow sub main body connects bile storage bag；The conduit runs through the flow sub main body, the drainage
The second sealing ring close to second sealing nut is equipped in adapter body.
Optionally, the catheter interior is equipped with isolation board；The inner cavity of the conduit is isolated into described draw by the isolation board
Chamber and back cavity are flowed, so that the cross-sectional area of the drainage lumens is less than or equal to the cross-sectional area of the back cavity.
Optionally, tube wall of the conduit close to biliary tract end is equipped with multiple bile and collects hole, to accelerate to collect gallbladder
Bile in road alleviates pressure of biliary tract.
From the above technical scheme, the application provides a kind of biliary stent, including conduit, bile storage bag and connects
Head assembly.The conduit is connected to bile storage bag by joint assembly, and the bile in biliary tract is allow to pass through the drainage in conduit
Chamber is drained in vitro, is stored in bile storage bag.It, can be by the back cavity in conduit by bile when needing re-injection bile
It is back to enteron aisle, participates in the food digestion in enteron aisle.The conduit is by being built in the same pipeline for drainage lumens and back cavity
It is interior, and hole and bile relief hole are collected by the bile on different location, the collection and release of bile are independently carried out, consequently facilitating
Conduit is placed in the patient.In addition, by being detachably connected relationship between conduit and bile storage bag and joint assembly,
Bile storage bag and joint assembly can be removed when passing through patient's nasal cavity, will pass through patient's nasal cavity, solve tradition and draw
Flow tube is not easy to the problem of being placed in the patient.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is typical inside-and-outside drainage structural schematic diagram；
Fig. 2 is a kind of structural schematic diagram of biliary stent of the application；
Fig. 3 is the application conduit section view and cross section structure schematic diagram；
Fig. 4 is the overall structure diagram of the application conduit；
Fig. 5 is the schematic cross-sectional view of the application backflow fittings；
Fig. 6 is the schematic cross-sectional view of the application flow sub；
Fig. 7 is the mounting structure schematic diagram of the application impregnator.
Specific embodiment
Embodiment will be illustrated in detail below, the example is illustrated in the accompanying drawings.In the following description when referring to the accompanying drawings,
Unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Implement described in following embodiment
Mode does not represent all embodiments consistent with the application.It is only and be described in detail in claims, the application
The example of the consistent system and method for some aspects.
As shown in Figure 2 and Figure 3, biliary stent provided by the present application, comprising: bile storage bag 1, conduit 2 and connector group
Part 3.Wherein, bile storage bag 1 is used to store the bile gone out from biliary drainage, and bile storage bag 1 can be the close of plastic material
The Detachable connection structure for connecting tube 2 or joint assembly 3 can be set in envelope on bile storage bag 1, for example,
Screwed pipe, elastic ferrule etc., so that bile storage bag 1 to be quickly installed on conduit 2.The application is for bile storage bag 1
Concrete shape with no restrictions, but in the section Example of the application, can be equipped with refluxing opening with the bag of bile storage bag 1.
It, can be from opening with when needing to carry out bile reflux for example, be provided with the through-hole for reflux on the side wall of bile storage bag 1
If through-hole extract bile storage bag 1 in bile, re-injection is into Intestinal Mucosal Injury in Patients Undergoing.
Conduit 2 is for drainage and re-injection bile.In clinic, in the biliary tract of one end merging patient of conduit 2, the other end is logical
The nasal cavity for crossing patient is led in vitro, and is connected to bile storage bag 1 in vitro.The conduit 2 in clinic, suffering from by extraction
The external one end of person is defined as nasal cavity end 201, and the one end being placed in patient's biliary tract is defined as biliary tract end 202.Obviously,
Nasal cavity end 201 and biliary tract end 202 described herein do not propose the application just to the convenient description to scenario-frame
The biliary stent structure of confession, which is constituted, to be limited.When practical application, which end is as nasal cavity end 201, which end is as biliary tract end
202, it should be distinguished according to use environment and specific structure.
In order to which the bile for realizing to patient drains and re-injection, conduit 2 provided by the present application are integral type double lumen tube, i.e.,
In the inside of conduit 2, equipped with mutually isolated drainage lumens 21 and back cavity 22.Wherein, drainage lumens 21 will be for that will flow into conduit 2
Bile guidance flow into bile storage bag 1 in.Back cavity 22 is then for flowing into patient's intestines for the bile guidance in bile storage bag 1
In road.In the application, in order to realize that above-mentioned double lumen, conduit 2 can add an isolation board in the inner cavity of pipeline
25, as shown in Figure 3.That is, the inner cavity of the conduit 2 is isolated into drainage lumens 21 and back cavity 22 by isolation board 25.
As it can be seen that entire conduit 2 can be by an isodiametric continuous round tube group in technical solution provided by the present application
At, and the everywhere of conduit 2 is all isolated plate 25 and is divided into 22 two cavitys of drainage lumens 21 and back cavity.Obviously, in this Shen
Please in, the conduit 2 is not limited only to above structure, can also be made up of two independent tubes of encapsulation and have drainage lumens
21 and back cavity 22 double lumen tube；Alternatively, realizing that the conduit 2 has double lumen, by cannula structure to drain respectively
It can be slightly troublesome but when being placed in the patient with reflux bile.
For conduit 2 on the tube wall at biliary tract end 202, the bile equipped with connection drainage lumens 21 collects hole 23.In practical application,
It is the through-hole that conduit 2 is opened up in 21 side of drainage lumens that bile, which collects hole 23, for collecting the bile in biliary tract.Due to having in biliary tract
There is the pressure higher than external environment, therefore, the bile in biliary tract can pass through gallbladder by the pressure effect in patient's gall-bladder
Juice is collected hole 23 and is entered in drainage lumens 21, and forms lasting liquid flow under the driving of pressure in gallbladder, so that into bile
Storage bag 1.
Further, as shown in figure 4, multiple bile can be set in the conduit 2 on the tube wall at biliary tract end 202
Hole 23 is collected, to accelerate to collect the bile in biliary tract, alleviates pressure of biliary tract.In practical application, after conduit 2 is in merging biliary tract,
A part can be extended in biliary tract, the corresponding conduit 2 in this section of extension can be wrapped up by the bile in biliary tract, therefore, Ke Yi
It extends on the conduit 2 in biliary tract and collects the quantity in hole 23 by increasing bile, Lai Zengjia bile enters the stream in drainage lumens 21
Amount, to improve the collection efficiency of bile, alleviates rapidly pressure of biliary tract.
It should be noted that in this application, hole 23 can be collected by the way that multiple bile are arranged on the tube wall of conduit 2,
Improve bile gathering speed, but the bile on conduit 2 collect hole 23 quantity it is also unsuitable excessive, it is to reduce miscellaneous in alimentary canal
Matter is collected hole 23 by bile and is entered in drainage lumens 21, and blocking drainage lumens 21 or pollution is avoided to drain external bile.Cause
This, the number that the bile on the conduit 2 collects hole 23 may range from 1-10, and it is 5 that preferably bile, which collects the number in hole 23,
It is a.
In addition, in the application for bile collect hole 23 aperture with no restrictions, can be according to different trouble in clinical setting
The biliary tract feature of person and the different location and degree of operation on biliary tract select the bile of different pore size size to collect hole 23.For
Multiple bile collect the case where hole 23, and the aperture that multiple bile can also be made to collect hole 23 is inconsistent, different in biliary tract to adapt to
Pressure on position.For example, the aperture that bile collects hole 23 can be successively from the direction for moving closer to 2 biliary tract end 202 of conduit
Increase, so that the pressure of bile reaches unanimity in conduit 2.
On the tube wall of the conduit 2, it is additionally provided with the bile relief hole 24 of connection back cavity 22.Bile relief hole 24 should open up
On 2 tube wall of conduit of 22 side of back cavity.In clinic, when needing bile re-injection, it can be incited somebody to action by bile relief hole 24
Bile in back cavity 22 is discharged into the enteron aisle of patient.In order to enable the bile flowed out at bile relief hole 24 to participate in patient
Normal digestive process, the bile, which collects hole 23 and the bile relief hole 24, should be spaced setting, i.e. bile relief hole 24 exists
Position is opened up on conduit 2, is the corresponding position of enteron aisle, i.e. the duodenum position apart from patient's stomach 10cm or so.
As it can be seen that passing through the integrated double-cavity structure of conduit 2, it is ensured that conduit 2 in technical solution provided by the present application
External structure is rendered as tubular, in order to which conduit 2 is smoothly placed in the patient by operator by alimentary canal.And it is internal logical
Isolation board 25 is crossed, 2 inner cavity of conduit is divided into 22 two mutually independent cavitys of drainage lumens 21 and back cavity.It can not only distinguish
Meet drainage and two kinds of demands of re-injection, and conduit 2 can be made when not punching, the structure of each section is all identical, easy to produce
Processing.I.e. in actual production, conduit 2 can be separately machined by a kind of mold, additionally it is possible to convenient for according to different patients'
The length of conduit 2 is adjusted flexibly in alimentary canal feature.
In the application, important composition component of the joint assembly 3 as the biliary stent is mainly used for connecting conduit 2
With bile storage bag 1, and, will be in the back cavity 22 of the biliary recycle in bile storage bag 1 to conduit 2.For the ease of that will lead
Pipe 2 is placed in the patient, and by the nasal cavity of patient, in this application, the detachably connected bile storage bag of conduit 2
1 and joint assembly 3.
Illustratively, the detachably connected joint assembly 3 of conduit 2 includes: and leads described in the joint assembly 3 is detachably connected
The nasal cavity end 201 of pipe 2, so that joint assembly 3 realizes conduit 2 and bile storage bag by the connection between bile storage bag 1
Being detachably connected between 1.Joint assembly 3 can be when entire drainage tube to be placed in the patient, under dismantling from conduit 2
Come, conduit 2 is tubular structure at this time, and operation when making to be placed in internal is more flexible, and convenient for passing through the nasal cavity of patient.This Shen
In the technical solution that please be provided, joint assembly 3 is connected to one end of conduit 2 together with bile storage bag 1, is needing to carry out
When disassembly, easily joint assembly 3 can be disassembled from conduit 2.Specific detachable connection method can be with are as follows: passes through spiral shell
The modes such as line connects, snaps connection, fixed connection realize the connection of joint assembly 3 and conduit 2.
The two works of bile re-injection are connected and completed since in technical solution provided by the present application, joint assembly 3 has
With.Therefore, in order to realize the above functions, as shown in Fig. 2, the joint assembly 3 can further comprise being connected on the conduit 2
Backflow fittings 31 and flow sub 32.Wherein, the flow sub 32 is connected to the drainage lumens 21, and the backflow fittings 31 connect
Lead to the back cavity 22, to provide different bile flows when carrying out biliary drainage and reflux.It is deposited for the ease of setting bile
Storage bag 1, flow sub 32 may be provided at the position closer to nasal cavity end 201, so that conduit 2 is directly connected to bile storage bag
In 1.Flow sub 32 is between backflow fittings 31 and bile storage bag 1.Backflow fittings 31 are connected to back cavity 22, by gallbladder
Bile injects back cavity 22 in juice storage bag 1.
In order to carry out bile reflux, as shown in figure 5, backflow fittings 31 include the backflow fittings main body 311 of three-port structure, with
And it is screwed onto two first sealing nuts 312 at 311 both ends of backflow fittings main body.The inner cavity of backflow fittings main body 311 is connected to back
Flow chamber 22.In practical application, conduit 2 runs through backflow fittings main body 311.For passing through the conduit 2 of backflow fittings main body 311
Part can open up the through-hole of reflux on tube wall, the inner cavity of backflow fittings main body 311 is enable to be connected to back cavity 22.
And contact respectively two the is additionally provided in order to avoid bile is leaked from 311 two sides of backflow fittings main body, in backflow fittings main body 311
First sealing ring 313 of one sealing nut 312.
In the present embodiment, first sealing ring 313 is cirque structure made of soft material, such as foam plastics.The
One sealing ring 313 can be set on conduit 2, or be previously positioned at backflow fittings in advance when needing to guarantee sealing effect
In main body 311.First sealing ring 313 will guarantee inner ring and 2 close contacting fit of conduit, while guarantee outer ring and backflow fittings master
311 close contacting fit of body, to prevent bile during re-injection to back cavity 22, from contact gap leakage.Obviously, described
Backflow fittings main body 311 and the first sealing ring 313 will carry out disinfection processing in advance, to avoid pollution bile.
For backflow fittings 31, in actual installation process, conduit 2 first can be passed through into backflow fittings main body 311, then successively
Two the first sealing nuts 312 for screwing 311 two sides of backflow fittings main body, make backflow fittings main body 311 be fixed on the pre- of conduit 2
Positioning is set, and the first sealing ring 313 is made to be in close contact the tube wall of conduit 2, increases the leakproofness of the backflow fittings 31.
Further, as shown in Figure 5, Figure 7, backflow fittings 31 further include refluxing opening 314 and impregnator 33.Wherein, it flows back
On the other hand on the one hand inner cavities that mouth 314 is connected to backflow fittings main bodys 311 pass through the return pipe and return pipe being additionally arranged
On impregnator 33 be connected to bile storage bag 1, so as to the bile in bile storage bag 1 can under the driving of impregnator 33, flow
In the inner cavity for entering backflow fittings main body 311.In order to improve integral sealing effect, the refluxing opening 314 can be with backflow fittings master
Body 311 is an integral structure, i.e., refluxing opening 314 is exactly a bifurcations in 311 three-port structure of backflow fittings main body.
In the present embodiment, the reflux of bile in bile storage bag 1 can be by being capable of providing the fluid injection of liquid flowing pressure
Device 33 realizes that impregnator 33 can be manually piston type priming device, be also possible to the micropump extracted automatically.Practical application
In, it can also be by the way that bile storage bag 1 be suspended in higher position, the self gravity by bile makes bile be back to enteron aisle.At this point,
Impregnator 33 and refluxing opening 314 may be constructed the structure similar to traditional infusion equipment, at this point, impregnator 33 is ventilation pipe, mesh
Be keep bile storage bag 1 in stable gas pressure, extract the bile in the bile storage bag 1 to the backflow fittings
The inner cavity of main body 311.
As shown in fig. 6, the flow sub 32 still further comprises flow sub main body 321, and it is screwed onto described draw
Flow second sealing nut 322 of 321 one end of adapter body.In clinic, the conduit 2 runs through the flow sub main body 321, i.e.,
Across flow sub main body 321 and entire flow sub 32 can be made to be fixed on conduit 2 by screwing the second sealing nut 322
On.
For the ease of installing bile storage bag 1, the second sealing nut 322 should be arranged in separate in flow sub main body 321
One end of bile storage bag 1.Therefore, external screw thread should be set in one end far from bile storage bag 1 in flow sub main body 321,
To cooperate the second sealing nut 322.Flow sub main body 321 connects bile storage bag 1, to realize that the connection of bile storage bag 1 is drawn
Flow chamber 21.Bile storage bag 1 can directly be fixed together with flow sub main body 321, can also be dismountable by other
Mode is fixed together, for example, buckle, pressure ring, threaded connection etc..It is constituted between bile storage bag 1 and flow sub main body 321
Dismountable connection type, when can contain impurity in the bile drained, when such as just starting drainage, by bile storage bag
1 disassembles, the bile quality for avoiding the impurity effect in alimentary canal from draining.
Equally, in order to keep the leakproofness between flow sub main body 321 and conduit 2, bile on rare occasion is avoided
Bile in storage bag 1 leaks out the gap of bag body junction.It is equipped in the flow sub main body 321 close close to described second
Seal the second sealing ring 323 of nut 322.Second sealing ring 323 is similarly soft material and is made, and is in close contact conduit 2 respectively
The inner cavity of outer wall and flow sub main body 321, to fill up between the second sealing nut 322 and flow sub main body 321
Sealing effect is improved in gap.
In above-described embodiment, first sealing nut 312 and the second sealing nut 322 divide for being connected through a screw thread
Backflow fittings main body 311 and flow sub main body 321 is not set to be fixed on conduit 2.Specific implementation may include with
Lower two kinds:
One is external screw thread to be arranged in the outer surface of two adapter bodies, and adapter body keeps certain wedge structure,
That is screwing with the first sealing nut 312 and the second sealing nut 322, backflow fittings main body 311 and flow sub main body 321
Intracavity diameter be gradually reduced, until inner cavity is closely coated on the tube wall of conduit 2.That is, passing through backflow fittings main body 311 and drainage
Contact friction force between the inner cavity and conduit 2 of adapter body 321, which is realized, to be fixed.
Secondly being, as shown in figure 5, there is gradually narrowed tapered inner-cavity structure inside backflow fittings main body 311, together
When, protrusion is equipped in the side that the first sealing nut 312 contacts the first sealing ring 313.The first nut 312 in screwing operations
Position moves closer to 311 medium position of backflow fittings main body, and the protrusion on the first sealing nut 312 is made to squeeze the first sealing ring
313, so that the first sealing ring 313 generates under the compressing of protrusion and gradual shrinkage cavity body structure into the first sealing ring 313
The active force of heart locality, then the first sealing ring 313 can closely envelope conduit 2, so that backflow fittings 31 are fixed on
On conduit 2.As it can be seen that in the present embodiment, first sealing ring 313 is not only used to maintain sealing effect, and undertakes fixation
The effect of backflow fittings 31.
Similarly, for the second sealing nut 322, it can also realize flow sub 32 on conduit 2 through the above way
It is fixed.Further, fixation of the flow sub 32 on conduit 2 can also be realized by structure as shown in FIG. 6.That is, second
The inside of sealing nut 322 has gradually narrowed gradual shrinkage structure, and in the second sealing nut 322 in screwing operations, meeting
The second sealing ring 323 is driven to move closer to a side end face of flow sub main body 321, to make the second sealing nut 322 gradually
Miniature inner cavity and the end face of flow sub main body 321 are in two the second sealing rings of side compression 323.And gradual shrinkage inner-cavity structure, can
To generate the active force to 323 center direction of the second sealing ring, the second sealing ring 323 is enabled closely to be coated on conduit
On 2 tube wall, realize that the position of flow sub 32 is fixed.
As it can be seen that technical solution provided by the present application can be connected by the compression of the first sealing ring 313 and the second sealing ring 323
It connects, is fixed on backflow fittings 31 and flow sub 32 on conduit 2.Above-mentioned connection method is suitable for the structure of conduit 2, avoids
Additional connection structure is processed on conduit 2, and also nonfertilization degree limits for backflow fittings 31 and the installation site of flow sub 32,
Greatly improve the installation effectiveness of connector.In addition, due to the first sealing ring 313 and the second sealing ring 323 itself have the characteristics that it is soft,
Serious compressing can be caused to avoid the tube wall to conduit 2, to avoid conduit 2 being damaged in tightening nut.
From the above technical scheme, biliary stent provided by the present application, including conduit 2, bile storage bag 1 and connect
Head assembly 3.Wherein, conduit 2 is connected to bile storage bag 1 by joint assembly 3, and the bile in biliary tract is made to pass through drawing in conduit 2
Stream chamber 21 drains in vitro, and is stored in bile storage bag 1.When needing re-injection, by the back cavity 22 in conduit 2 by gallbladder
Juice is back to enteron aisle, participates in digestion.The conduit 2 by the way that drainage lumens 21 and back cavity 22 are built in the same pipeline, and
Hole 23 and bile relief hole 24 are collected by the bile on different location, independently carries out the collection and release of bile, consequently facilitating
Conduit 2 is placed in the patient.
In the section Example of the application, as shown in figure 3, the cross-sectional area of the drainage lumens 21 is less than or equal to institute
State the cross-sectional area of back cavity 22.That is, in the present embodiment, the cavity space outline of drainage lumens 21 is less than back cavity 22.This
The structure of sample is adapted to pressure of biliary tract, so that the bile in drainage lumens 21 is kept stable flow direction in drainage process, avoids
There is pressure unevenness so that the problem of causing bile reverse flow.In addition, above structure also ensures that back cavity 22 possesses more greatly
Space, so that bile can enter in enteron aisle quickly through back cavity 22 when needing re-injection bile, participation digested
Journey.
In technical solution provided by the present application, conduit 2 needs to extend to the nasal cavity of patient, therefore conduit 2 from biliary tract
Length it is longer, be many times difficult to be precisely controlled.Also, biliary tract is located at patient's duodenum neighbouring position, biliary tract mouth
It is relatively thin, further plus away from the defect being difficult to control accurately, so that conduit 2 is difficult to smoothly enter among biliary tract.Therefore,
It can smoothly enter into the predetermined position in biliary tract for the ease of conduit 2, in the section Example of the application, the back cavity 22
It is enclosed construction in the end at the 2 biliary tract end 202 of conduit, the enclosed construction of 2 end of conduit on the one hand, can be to avoid gallbladder
Juice enters the back cavity 22 by the end of the back cavity 22, and bile is avoided to lose；It on the other hand, can be by the envelope of end
Close structure be further arranged to it is arc-shaped, in order to conduit 2 can the smooth operation in patient's biliary tract and alimentary canal, in addition may be used also
It causes to damage to avoid to alimentary canal.
Further, as shown in figure 4, the conduit 2 is fixed to warp architecture close to the part at biliary tract end 202, to adapt to
Biliary tract shape.That is, in the present embodiment, conduit 2 is located at one section in biliary tract, to have be consistent with biliary tract nature shape it is curved
Bent arcuate structure.And be located at one end in duodenum region in conduit 2, then have helical structure, and in biliary tract
It keeps being smoothly connected between one section of conduit 2.As it can be seen that in the present embodiment, conduit 2 is fixed to close to the part at biliary tract end 202
Warp architecture is adapted to biliary tract shape, and conduit 2 is avoided to oppress patient's bile duct wall, mitigates patient suffering.Also, it leads
The helical structure at duodenum of pipe 2 can bend, avoid in obstruction conduit 2 to avoid conduit 2 in enteron aisle
Drainage lumens 21.
In addition, biliary stent provided by the present application is in actual use, conduit 2 is first prolonged into seal wire insertion duodenum
Mirror, and it is placed into the predetermined position in bile duct.Again by X-ray machine, whether the placement location for observing conduit 2 is correct.If placed
Position meets pre-provisioning request, and endoscope and seal wire are exited out of human body, retains conduit 2 on a predetermined position.In conduit 2
After 202 position of biliary tract end determines, the nasal cavity end 201 of conduit 2 can be pulled out from patient's nasal cavity, and joint assembly 3 is installed to
On conduit 2, the connection bile storage bag 1 of joint assembly 3 is finally completed to the placement of entire biliary stent.When needing to deposit bile
When bile in storage bag 1 is recycled into the enteron aisle of patient, impregnator 33 can be mounted in the backflow fittings 21 of conduit 2 again, even
In the fluid injection opening of logical back cavity 22, it can extract bile out from bile storage bag 1 with impregnator 33 at any time, and pass through reflux
Chamber 22 is injected back into vivo.
From the above technical scheme, biliary stent provided by the present application uses double cavity structure, draws than conventional nose gallbladder
The more back cavities 22 of flow tube.Therefore, can be while realizing biliary drainage, to being injected back into bile in vivo, and then solve general
The problem of logical nose bile drainage tube discards after biliary drainage goes out in vitro, can not participate in human consumption.On the other hand, the application mentions
The biliary stent of confession uses the double channel catheter of integral type, so that operating process only needs to operate a conduit and nose gallbladder can be realized
Drainage location is placed, and being detachably connected by conduit 2 and joint assembly 3, draws conduit 2 more easily from nasal cavity
Out.Also facilitate the connection between external bile storage bag 1 simultaneously.
Similar portion cross-reference between embodiment provided by the present application, specific embodiment provided above is only
It is several examples under the total design of the application, does not constitute the restriction of the application protection scope.For those skilled in the art
For member, any other embodiment expanded without creative efforts according to application scheme all belongs to
In the protection scope of the application.
Claims (10)
1. a kind of biliary stent characterized by comprising
Conduit (2), for drainage and re-injection bile；
Joint assembly (3), the joint assembly are detachably connected the nasal cavity end (201) of the conduit (2)；
Wherein, the conduit (2) is integral type double lumen tube；
Mutually isolated drainage lumens (21) and back cavity (22) are equipped with inside the conduit (2)；The conduit (2) is close to biliary tract end
(202) on tube wall, it is equipped with bile collection hole (23) for being connected to the drainage lumens (21)；On the tube wall of the conduit (2), also set
There is the bile relief hole (24) for being connected to the back cavity (22)；The bile is collected between hole (23) and the bile relief hole (24)
Every setting.
2. biliary stent according to claim 1, which is characterized in that the back cavity (22) is located at the conduit (2)
The end at biliary tract end (202) is enclosed construction, enters the back cavity by the end of the back cavity (22) to avoid bile
(22)。
3. biliary stent according to claim 1, which is characterized in that portion of the conduit (2) close to biliary tract end (202)
Divide and be fixed to warp architecture, to adapt to biliary tract shape.
4. biliary stent according to claim 1, which is characterized in that the biliary stent further includes bile storage bag
(1), for storing the bile gone out from biliary drainage；The bile storage bag (1) described in the joint assembly (3) connection by leading
It manages (2).
5. biliary stent according to claim 4, which is characterized in that the joint assembly (3) is described including being connected on
Backflow fittings (31) and flow sub (32) on conduit (2)；
The backflow fittings (31) are connected to the back cavity (22), and the flow sub (32) is connected to the drainage lumens (21), with
When carrying out biliary drainage and reflux, different bile flows is provided.
6. biliary stent according to claim 5, which is characterized in that the backflow fittings (31) include three-port structure
Backflow fittings main body (311), and it is screwed onto two first sealing nuts (312) at flow sub main body (311) both ends；
The conduit (2) run through the backflow fittings main body (311), the backflow fittings main body (311) inner cavity connection described in
Back cavity (22)；The first sealing for contacting two the first sealing nuts (312) respectively is equipped in the backflow fittings main body (311)
It encloses (313).
7. biliary stent according to claim 6, which is characterized in that the backflow fittings (31) further include refluxing opening
(314) it is an integral structure with impregnator (33), the refluxing opening (314) with the backflow fittings main body (311)；The reflux
Mouth (314) is extracted the bile in the bile storage bag (1) to institute by impregnator (33) connection bile storage bag (1)
State the inner cavity of backflow fittings main body (311).
8. biliary stent according to claim 5, which is characterized in that the flow sub (32) includes flow sub master
Body (321), and it is screwed onto second sealing nut (322) of described flow sub main body (321) one end；
The flow sub main body (321) connects bile storage bag (1)；The conduit (2) runs through the flow sub main body
(321), the second sealing ring (323) close to second sealing nut (322) is equipped in the flow sub main body (321).
9. biliary stent according to claim 1, which is characterized in that be equipped with isolation board (25) inside the conduit (2)；
The inner cavity of the conduit (2) is isolated into the drainage lumens (21) and back cavity (22) by the isolation board (25), so that described draw
The cross-sectional area for flowing chamber (21) is less than or equal to the cross-sectional area of the back cavity (22).
10. biliary stent according to claim 1, which is characterized in that the conduit (2) is close to biliary tract end (202)
Tube wall is equipped with multiple bile and collects hole (23), to accelerate to collect the bile in biliary tract, alleviates pressure of biliary tract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137202.3A CN109646792A (en) | 2019-02-25 | 2019-02-25 | A kind of biliary stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137202.3A CN109646792A (en) | 2019-02-25 | 2019-02-25 | A kind of biliary stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109646792A true CN109646792A (en) | 2019-04-19 |
Family
ID=66123125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910137202.3A Pending CN109646792A (en) | 2019-02-25 | 2019-02-25 | A kind of biliary stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109646792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559493A (en) * | 2019-10-22 | 2019-12-13 | 张斌 | a put a tub drainage device for biliopancreatic surgery |
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| CN203075439U (en) * | 2013-02-18 | 2013-07-24 | 邹晓平 | Balloon nasobiliary drainage tube |
| CN103536997A (en) * | 2013-11-18 | 2014-01-29 | 山东省立医院 | Double-cavity nose bile drainage tube |
| CN206587266U (en) * | 2016-12-08 | 2017-10-27 | 胡小波 | The single tube ditrysian type bile duct internal and external drainage pipe of reflowable bile |
| CN210125091U (en) * | 2019-02-25 | 2020-03-06 | 南微医学科技股份有限公司 | Biliary tract drainage tube |
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|---|---|---|---|---|
| US5186715A (en) * | 1990-12-06 | 1993-02-16 | E-Z-Em, Inc. | Biliary drainage method |
| JPH06105903A (en) * | 1992-09-22 | 1994-04-19 | Nippon Zeon Co Ltd | Drainage tube for medical treatment |
| CN2829643Y (en) * | 2005-10-26 | 2006-10-25 | 广东冠昊生物科技有限公司 | Filling device for ala nasi operation |
| CN203075439U (en) * | 2013-02-18 | 2013-07-24 | 邹晓平 | Balloon nasobiliary drainage tube |
| CN103536997A (en) * | 2013-11-18 | 2014-01-29 | 山东省立医院 | Double-cavity nose bile drainage tube |
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| CN210125091U (en) * | 2019-02-25 | 2020-03-06 | 南微医学科技股份有限公司 | Biliary tract drainage tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559493A (en) * | 2019-10-22 | 2019-12-13 | 张斌 | a put a tub drainage device for biliopancreatic surgery |
| CN110559493B (en) * | 2019-10-22 | 2022-05-03 | 徐州医科大学附属医院 | A put a tub drainage device for biliopancreatic surgery |
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Address after: 210032 No. 10, No. 3 Gaoke Road, Pukou District, Nanjing City, Jiangsu Province Applicant after: Nanwei Medical Technology Co., Ltd Address before: 210032 No. 10, No. 3 Gaoke Road, Pukou District, Nanjing City, Jiangsu Province Applicant before: Micro-Tech (Nanjing) Co., Ltd. |