CN207055725U - A kind of sacculus dilating catheter - Google Patents
A kind of sacculus dilating catheter Download PDFInfo
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- CN207055725U CN207055725U CN201621431671.4U CN201621431671U CN207055725U CN 207055725 U CN207055725 U CN 207055725U CN 201621431671 U CN201621431671 U CN 201621431671U CN 207055725 U CN207055725 U CN 207055725U
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- China
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- sacculus
- inner tube
- dilating catheter
- seal wire
- catheter according
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Abstract
The utility model provides a kind of sacculus dilating catheter, and for the sacculus dilating catheter by setting the inner tube of double-layer structure, cladding material is polyamide copolymer or polyurethane, inner tube is integrally had higher elasticity and pliability, avoids puncturing sacculus or body cavity walls；Internal layer is fluoropolymer or high density polyethylene (HDPE), makes inner tube wall smooth, and frictional force is low, and seal wire very smoothly can enter and extract out in inner tube interpolation.And double-decker also add the overall intensity of inner tube, avoid the situation that possible seal wire punctures inner tube.
Description
Technical field
Technical field of medical instruments is the utility model is related to, is a kind of sacculus dilating catheter specifically.
Background technology
If forming narrow or occlusive part at the non-vascular natural cavity such as bile duct, ductus pancreaticus, ureter, bile can be hindered
The flowing of (bile), pancreatic juice etc., in previous technology, stenosis of bile duct, which is generally continued to use, cuts stenosis ring, bile duct shaping and jejunum
It coincide, or even the operative treatment such as lobectomy of liver, this performs the operation for the stenosis of bile duct of Hilar can obtain good effect, but perform the operation
Wound is big, narrow especially for stones in intrahepatic bile duct, and because its position is deep, operating difficulty is big, damage weight, and caused by after Cholangio- jejunostomy
Many drawbacks such as biliary tract retrograde infection repeatedly, anastomotic stricture, decline postoperative patient life quality, many patients are through anti-
Also difficulty reaches promising result to multiple Repeated Operation.With the development of scope minimal invasive techniques, the treatment bile duct of sacculus dilating catheter is used
Narrow method is widely implemented.Sacculus dilating catheter is applied to extrahepatic duct and sphincter constriction patient, in scope subinverse
In row cholangiopancreatography (abbreviation ERCP) surgical procedure, this is installed on come to bile duct extrahepatic duct by stenosis by scope
Expanded with sphincter.
A variety of biliary tract expansion foley's tubes are disclosed in the prior art, as disclosed in bibliography 1 (CN203539853U)
A kind of novel biliary tract dilating sacculus, pipe shaft are multi-cavity tubular construction, including the soft head of taper, sacculus, pipe shaft, quick guide wire exit openings,
Color mark, guide wire exit openings, moulding, proximal tube, connector, sacculus are fixed on novel biliary tract dilating sacculus remote location, made
Deflated folded state is in preceding.Solve that the existing simple coaxial structure of dilating sacculus is cumbersome, and the time is longer, and simple
Fast-swap does not meet the problem of operating habit of most of Chinese doctors.
A kind of multi-functional expansion of balloon catheter is also disclosed that in bibliography 2 (CN204446952U), it includes：Inner tube
(1), the front end of said inner tube (1) is provided with the guidewire port (2) for injecting cleaning liquid, and the end of said inner tube (1) is set
Have with the soft head (3) of said inner tube (1) integrally connected, be provided with sacculus (4), the front end of the sacculus (4) in said inner tube (1)
It is connected with outer tube (5), the outer tube (5) is connected with being used for the side interface (6) of the sacculus (4) interior injecting fluid, institute
State sacculus (4) and comprise at least double-layer structure.The sacculus includes internal layer and outer layer, and the cladding material is hard relative to inner layer material
It is high to spend low and toughness；And the sacculus outer layer soft texture that directly contacts of body cavities therefore.The narrow nasal sinus of expansion is applied to lead to
During road, soft sacculus will not cause to damage to bronchia mucosal and tissue.And it is used as biliary tract expansion sacculus or ureterectasia
During sacculus, the balloon material of high tenacity is not easy to be poked by the calculus with sharp corners.
Dilating sacculus disclosed in above-mentioned two documents for ERCP when in performing the operation, because catheter length is longer, seal wire
It is larger with the frictional force of pipe inner wall, not only hinder in seal wire insertion conduit, and can also hinder smooth shifting of the seal wire along conduit
It is dynamic so as to become difficult in the fine operation that predetermined position is carried out, be difficult to control the direction of seal wire insertion, operating personnel use
Power is excessive may to stab inwall.It is easy to occur seal wire to be stuck to obtain situation, seal wire can not be withdrawn from from conduit, caused sometimes
Although making to complete operation, catheter lumen still can not use.
Based on above mentioned problem, a kind of narrow biliary tract and Cholangio- jejunostomy mouth are disclosed in bibliography 3 (CN203634625U)
Expansion of balloon catheter, including single lumen catheter portion (6), double channel catheter portion (7), sacculus (3), main nipple (9), additional teat (8), bile
Conduction hole (2), water filling injecting hole (5), for the ease of guiding steel wire insert and biliary drainage, catheter surface and inner chamber scribble
Superslide coating (1).Although refer to that superslide coating can be coated in catheter inside surface in order to which guiding steel wire is inserted in the patent,
But coating material be generally unattainable required for smooth surface and acceptable cohesive force, easy scraping in wire guide
Come off under wiping, it could even be possible to bringing into human body.
Therefore it provides a kind of seal wire, which inserts the good sacculus dilating catheter of property, turns into the problem of this medical field is anxious to be resolved.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of good sacculus dilating catheter of seal wire insertion property.
In order to solve the above technical problems, sacculus dilating catheter provided by the utility model, including sacculus, inner tube and outer
Pipe, the non-intrusive end of sacculus are connected with outer tube, gas or liquid can be filled with into sacculus by outer tube, sacculus and outer tube are arranged
Outside inner tube, the insertion end of sacculus is sealed on outer wall of inner tube, and inner tube is formed by two layers inside and outside being brought into close contact, and cladding material is
Polyamide copolymer or polyurethane, inner layer material are fluoropolymer or high density polyethylene (HDPE).
Further, fluoropolymer is polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene copolymer.
Further, polyamide copolymer is polyether amide block copolymer.
Further, the inner tube in sacculus is provided with developing mark.
Further, the insertion end of inner tube connects flexible soft head, has the inner chamber for being available for seal wire to pass through in flexible soft head.
Further, it is coated with hydrophilic coating on sacculus and flexible soft head.
Further, sacculus and for 3-5 levels expand.
Further, in addition to seal wire, the seal wire are located in inner tube.
To sum up, by setting the inner tube of double-layer structure, cladding material is sacculus dilating catheter provided by the utility model
Polyamide copolymer or polyurethane, make inner tube that integrally there is higher elasticity and pliability, avoid puncturing in sacculus or body cavity
Wall；Internal layer is fluoropolymer or high density polyethylene (HDPE), makes inner tube wall smooth, and frictional force is low, and seal wire can very smoothly
Enter and extract out in inner tube interpolation.And double-decker also add the overall intensity of inner tube, avoid in possible seal wire punctures
The situation of pipe.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is sacculus dilating catheter structural representation under the inflated condition of embodiment provided by the utility model；
Fig. 2 is sacculus dilating catheter structural representation under the unaerated state of embodiment provided by the utility model；
Element numbers are as follows：
1- inner tubes
2- outer tubes
3- sacculus
4- seal wires
The flexible soft heads of 5-
6- developing marks
Embodiment
Presently in connection with accompanying drawing, better embodiment of the present utility model is discussed in detail.Although description of the present utility model will
Introduced together with reference to each embodiment, but this feature for not representing this utility model is only limitted to the several embodiments.Just
Just on the contrary, being to be had to cover based on claim of the present utility model with reference to the purpose that embodiment makees utility model introduction
The other selections or transformation that may extend.Depth of the present utility model is understood in order to provide, will include and be permitted in describing below
More concrete details.The utility model can also be implemented without using these details.In addition, in order to avoid this chaotic or fuzzy practicality
New emphasis, some details will be omitted in the de-scription.
" on ", " under ", "left", "right", " top ", " bottom ", are in order to preferably in addition, used in the following description
Describe better embodiment of the present utility model and set, should not be construed as to limitation of the present utility model.
Term used herein, " non-intrusive end " refer in insertion operation closest to one end of operator；" insertion
End " is farthest apart from inlet location one end in body cavity.
Embodiment
As shown in figure 1, dilating sacculus of the present utility model includes sacculus 3, inner tube 1 and outer tube 2, the non-intrusive end of sacculus 3
It is connected with outer tube 2, gas or liquid can be filled with into sacculus 3 by outer tube 2, sacculus 3 and outer tube 2 are set in outside inner tube 1, ball
The insertion end of capsule 3 is sealed on the outer wall of inner tube 1, and inner tube 1 is formed by two layers inside and outside being brought into close contact, and cladding material is total to for polyamide
Polymers or polyurethane, inner layer material are fluoropolymer or high density polyethylene (HDPE).By setting the inner tube 1 of double-layer structure, outer layer
Material is polyamide copolymer or polyurethane, makes inner tube 1 is overall to have higher elasticity and pliability, is provided well for sacculus
Guidance quality, while avoid puncturing sacculus 3 or body cavity walls；Internal layer is fluoropolymer or high density polyethylene (HDPE), is made in inner tube 1
Wall is smooth, and frictional force is low, and seal wire 4 can very smoothly insertion and extraction in inner tube 1.And double-decker also add interior
The overall intensity of pipe 1, avoids the situation that possible seal wire 4 punctures inner tube 1.
The fluoropolymer can be selected from polytetrafluoroethylene (PTFE) (PTFE), fluorinated ethylene propylene copolymer (FEP), perfluor alkane
Copolymer (ETFE), Kynoar (PVDF) and the polytrifluorochloroethylene of epoxide polymer (PFA), tetrafluoroethene and ethene
(PCTFE) etc., but it is not limited to above-mentioned material.
Further, fluoropolymer is preferably polytetrafluoroethylene (PTFE) or fluorinated ethylene propylene copolymer, polytetrafluoroethylene (PTFE)
With antiacid alkali resistant, resist the characteristics of various organic solvents, be practically insoluble in all solvents；Fluorinated ethylene propylene copolymer is one
Kind soft plastic, its tensile strength, wearability, creep resistance are less than many engineering plastics, have excellent chemical inertness.Relatively
For other fluoropolymers, above two material not only smooth in appearance, frictional force is low, while has higher intensity, can
To avoid seal wire 4 from puncturing inner tube 1.
Further, polyamide copolymer is preferably polyether amide block copolymer (PEBAX), and it is free from plasticizer
Thermoplastic elastomer (TPE), the performance for there is good resilience, significantly processing, excellent compliance, variation with temperature property
Vary less, stable performance, the non-toxic and safe operation being more suitable in human body.
As shown in Fig. 2 further, dilating sacculus 3 is accurately placed in operative site for the ease of operating personnel, simultaneously
Stimulation of the developing mark 6 to human body is avoided, developing mark 6 can be provided with the outer wall of inner tube 1 in sacculus 3.Developing mark 6 can
So that including X-ray developing ring, point, line etc., in order to be accurately positioned the position of dilating sacculus 3, preferably X developing marks 6 are to be symmetrical arranged
Two developing rings.
Further, developing mark 6 is additionally may included in the high ring of Microendoscopic naked eyes identification, point, line, is preferably provided with
Center on the outer wall of inner tube 1 in sacculus 3.
Further, the insertion end connection flexible soft first 5 of inner tube 1, it is available in flexibility soft first 5 in seal wire 4 passes through
Chamber.The flexibility soft first 5 has good warping property, can improve the intubation performance of the conduit of sacculus 3, while reduces the damage of tube wall
Wound, the flexibility soft first 5 can be integrally formed with sacculus 3, fully ensure that the sealing of sacculus 3 and the fastness of soft head.
Further, in order to improve insertion, the insertion end of sacculus dilating catheter can scribble hydrophilic coating, for cost
Consider, it is preferred that whole flexible soft first 5 and sacculus 3 on be coated with hydrophilic coating.Hydrophilic coating can attract hydrone to exist
Its surface forms " gel " surface, reduces resistance during conduit insertion.Limited for hydrophilic coating material is not specific,
Coating is preferably formed by the small material of frictional resistance.Such as preferably by polyvinyl alcohol, polyvinylpyrrolidone, polyethylene glycol, poly-
Acrylamide, polyacrylic acid, Sodium Polyacrylate, poly- (2-hydroxyethyl methacrylate), maleic anhydride based copolymer, ethene-
Ethenol copolymer, 2- methylacryoyloxyethyls phosphocholine or its copolymer, (methacrylic acid 2- hydroxy methacrylates) benzene second
One or more in alkene block copolymer, various synthesis polypeptides, collagen, hyaluronate, cellulose-based copolymer.
Further, bioactivity coatings can also be applied on sacculus 3.This coating can also be selected from following thing
Matter：Such as heparin, for preventing and treating thrombosis and embolism, such as miocardial infarction, pulmonary embolism, thrombophlebitis and postoperative thrombus
Formed etc.；Hirudin and its analogue, for anticoagulation, antithrombus formation, and the clotting factor of catalyzed by thrombin is prevented to live
Change and the further blood stasis phenomenon such as platelet response；Or other drugs are used for anti-hemostasis-coagulation or convey medicine toward privileged site.Can
To select suitable coating according to the needs of conditions of patients, it is not limited to above-mentioned specific material.
Further, operation consent is actually being expanded, the work external diameter that doctor can not be required for accurate judgement sacculus 3, because
This may need the sacculus 3 for being repeatedly inserted into multiple different models, add operating time, and the utility model uses copolyamide
Material of the thing as sacculus 3, the sacculus 3 can be different according to filling pressure, have multiple work external diameters, can provide multistage expansion
, meet the different demands in same operation, while sacculus 3 can be expanded step by step to narrow positions, avoid causing
Severe haemorrhage etc., effectively reduce the pain of patient.In general, sacculus 3 has been able to meet reality for the expansion of 3-5 grades
The needs of operation.
Further, in addition to seal wire 4, the seal wire 4 are located in inner tube 1, because the hardness of seal wire 4 is more than inner tube 1 and outer
The hardness of pipe 2, operating personnel is quickly and efficiently inserted the catheter into patient's body by seal wire 4 and reach specified location.
Dilating sacculus involved by the utility model can be used for the expansion of Digestive Tract Stenosis, in addition, equally also may be used
It is for the expansion of the cavity stenosis such as blood vessel, ductus pancreaticus, ureter, its inner tube by setting double-layer structure, cladding material
Polyamide copolymer, make inner tube that integrally there is higher elasticity and pliability, avoid puncturing sacculus or body cavity walls；Internal layer is
Fluoropolymer or high density polyethylene (HDPE), make inner tube wall smooth, frictional force is low, and seal wire can be very smoothly in inner tube interpolation
Enter and extract out.And double-decker also add the overall intensity of inner tube, avoid the situation that possible seal wire punctures inner tube.
Above-mentioned explanation is the embodiment of embodiment in the utility model, for being illustrated more clearly that this practicality is new
The utility model design of type, but it is for the restriction to right of the present utility model that it, which is not,.It is new according to this practicality
The utility model design of type, those skilled in the art can easy variants and modifications the above embodiments, these belong to this practicality
Variants and modifications in new utility model design are all contained within the scope of the utility model appended claims.
Claims (7)
- A kind of 1. sacculus dilating catheter, it is characterised in that：Including sacculus, inner and outer tubes, the non-intrusive end of the sacculus and institute State outer tube to be connected, gas or liquid can be filled with into the sacculus by outer tube, the sacculus and outer tube are set in described Pipe is outer, and the insertion end of the sacculus is sealed on said inner tube outer wall, and said inner tube is formed by two layers inside and outside being brought into close contact, outside Layer material is polyamide copolymer or polyurethane, and inner layer material is fluoropolymer or high density polyethylene (HDPE).
- 2. sacculus dilating catheter according to claim 1, it is characterised in that：The fluoropolymer be polytetrafluoroethylene (PTFE) or Fluorinated ethylene propylene copolymer.
- 3. sacculus dilating catheter according to claim 1, it is characterised in that：The polyamide copolymer is that polyetheramides is embedding Section copolymer.
- 4. sacculus dilating catheter according to claim 1, it is characterised in that：Set in the said inner tube in the sacculus There is developing mark.
- 5. sacculus dilating catheter according to claim 1, it is characterised in that：The insertion end connection of said inner tube is flexible soft Head, there is the inner chamber for being available for seal wire to pass through in the soft head of flexibility.
- 6. sacculus dilating catheter according to claim 5, it is characterised in that：Coated on the sacculus and the soft head of flexibility There is hydrophilic coating.
- 7. sacculus dilating catheter according to claim 1, it is characterised in that：The sacculus is expanded for 3-5 levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621431671.4U CN207055725U (en) | 2016-12-23 | 2016-12-23 | A kind of sacculus dilating catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621431671.4U CN207055725U (en) | 2016-12-23 | 2016-12-23 | A kind of sacculus dilating catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207055725U true CN207055725U (en) | 2018-03-02 |
Family
ID=61500338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621431671.4U Active CN207055725U (en) | 2016-12-23 | 2016-12-23 | A kind of sacculus dilating catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207055725U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758269A (en) * | 2019-02-27 | 2019-05-17 | 上海微创医疗器械（集团）有限公司 | Prosthese and prosthetic appliance for shoulder joint |
| CN111369858A (en) * | 2020-03-03 | 2020-07-03 | 恩微通科技(深圳)有限公司 | Method for simulating retraction of brain tissue |
| CN111481813A (en) * | 2020-06-23 | 2020-08-04 | 上海明悦医疗科技有限公司 | Drug delivery device, method of manufacturing the same and drug delivery system |
| CN111617369A (en) * | 2020-06-03 | 2020-09-04 | 北京嘉和博龙医疗科技有限公司 | Visual prostate dilation catheter with closed front end and using method thereof |
-
2016
- 2016-12-23 CN CN201621431671.4U patent/CN207055725U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758269A (en) * | 2019-02-27 | 2019-05-17 | 上海微创医疗器械（集团）有限公司 | Prosthese and prosthetic appliance for shoulder joint |
| CN111369858A (en) * | 2020-03-03 | 2020-07-03 | 恩微通科技(深圳)有限公司 | Method for simulating retraction of brain tissue |
| CN111617369A (en) * | 2020-06-03 | 2020-09-04 | 北京嘉和博龙医疗科技有限公司 | Visual prostate dilation catheter with closed front end and using method thereof |
| CN111481813A (en) * | 2020-06-23 | 2020-08-04 | 上海明悦医疗科技有限公司 | Drug delivery device, method of manufacturing the same and drug delivery system |
| CN111481813B (en) * | 2020-06-23 | 2020-09-29 | 上海明悦医疗科技有限公司 | Drug delivery device, method of manufacturing the same and drug delivery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201210 east of 1st and 2nd floors, building 7, No. 150 Cailun Road, Pudong New Area, Shanghai Patentee after: Shanghai innova Medical Instrument Co.,Ltd. Address before: 201210 east of 1st and 2nd floors, building 7, No. 150 Cailun Road, Pudong New Area, Shanghai Patentee before: INNOVEX MEDICAL Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |