CN201150581Y - Biliary tract anti-countercurrent stent - Google Patents
Biliary tract anti-countercurrent stent Download PDFInfo
- Publication number
- CN201150581Y CN201150581Y CNU2008200311566U CN200820031156U CN201150581Y CN 201150581 Y CN201150581 Y CN 201150581Y CN U2008200311566 U CNU2008200311566 U CN U2008200311566U CN 200820031156 U CN200820031156 U CN 200820031156U CN 201150581 Y CN201150581 Y CN 201150581Y
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- CN
- China
- Prior art keywords
- biliary tract
- latticed
- regurgitation
- cylindrical body
- bracing frame
- 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.)
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Abstract
Disclosed is a biliary tract regurgitation preventing stent, which belongs to medical instruments and comprises a support frame (1). The biliary tract regurgitation preventing stent is characterized in that the support frame (1) is knitted by nickel titanium wires and is a hollow latticed cylindrical structure. The inner surface and the outer surface of the latticed cylinder support frame (1) are coated with medical silicon membranes or a PTFE membrane layers (2), and one end of the latticed cylinder support frame (1) towards the duodenum is equipped with an anti-regurgitation periosteal flap (3). In normal digestion, when gallbladder contracts, the periosteal flap automatically opens under bile pressure to enable the bile to enter the duodenum. When the periosteal flap is closed, the intestinal cavity contents and intestinal bacteria and the like are not easy to regurgitate to common bile duct, thereby having the function of regurgitation prevention of papillosphincterotomy of duodenum. The biliary tract regurgitation preventing stent has the advantages of simple structure, convenient manufacture, low cost, convenient placement and recycle in operation, which can be molded on time and realize large scale industrial production and the like.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, especially a kind of biliary tract rack, specifically a kind of biliary tract antireflux support.
Background technology
At present, at biliary tract and similarly insert in the human body organ stent in the treatment narrow, block with fistula be a kind of effective method for treatment, it has, and wound is little, patient is painful little, the characteristics that surgery cost is low, be particularly useful for inoperable gerontal patient, can significantly improve patient's living condition.
Malignant biliary obstruction/narrow is oncology, Digestive System Department and Genneral Surgery's common but severe disease, especially is more common in the late tumor case.Insert the memory metal support and need not to operate on, can remove patient's jaundice rapidly, improve overall health of patients,, prolong patient's life to a certain extent for successive treatment creates conditions.
Yet, the present metal biliary tract rack ubiquity that adopts two and is limited to greatly: the one, and tube chamber is bigger after the support complete expansion, when support one end keep somewhere with vater's papilla outside the time, very easy the driving in the wrong direction of enteric cavity content and intestinal bacteria backflowed into biliary system, cause biliary tract infection, cause support block to lose efficacy, serious infection even can jeopardize patient's life; The 2nd, existing recuperability that can swollen formula metal rack is poor, and support is inserted the back and is difficult for taking out, and can not be used for the treatment of optimum biliary tract, has limited its clinical application range.How improving the anti-reflux characteristic and the recyclable performance of biliary tract rack, is to improve therapeutic effect, enlarges range of application, alleviates patient's misery and improves patient's key of quality of life.
Summary of the invention
The purpose of this utility model is can not prevent that at existing biliary tract rack the enteric cavity content from backflowing and recuperability is poor, thereby easily cause and infect and the narrow problem of range of application, design a kind of anti-characteristic and be easy to reclaim of backflowing that has, can be used for the anti-support that backflows of biliary tract of optimum biliary tract treatment.
The technical solution of the utility model is:
A kind of biliary tract antireflux support, comprise bracing frame 1, it is characterized in that described bracing frame 1 is for weaving latticed cylindrical structure that form, hollow by the ti-ni shape memory alloy silk, the inner surface of described latticed cylindrical body supports frame true 1 or outer surface are covered with medical silica-gel film or PTFE rete 2, point at latticed cylindrical body supports frame 1 the anti-film lobe 3 that backflows is installed on the duodenal end.
The axial line of described latticed cylindrical body supports frame 1 or be straight line, or be curve, or be broken line, or be their combination, correspondingly described cylinder is right circular cylinder, Qu Zhuti or the polyline shaped cylinder that is formed by connecting by the right circular cylinder transitions smooth that equates with broken line quantity.
The one or both ends of described latticed cylindrical body supports frame 1 are planar shaped, mushroom-shaped, C shape or spherical structure, and the described anti-film lobe 3 that backflows is installed on the cylindrical proximal face 4 of corresponding planar shaped, mushroom-shaped, C shape or spherical structure.
The described anti-film lobe 3 that backflows is spherical shell structure, and the opening of spherical shell points to duodenum, and its upper edge links to each other with bracing frame 1, its downward outside that is the pendulum shape and is positioned at the proximal face 4 of bracing frame 1.
The beneficial effects of the utility model:
1, applied range, easy to operate, can use existing laying method this product to be placed in patient's the body more easily.Stent delivery system can adopt two kinds of support mounting means: forward and reverse is fit to percutaneous respectively and uses through liver approach (PTC) with through scope approach (ERCP).
2, the restenosis problem after the rack body overlay film can solve support to a certain extent and inserts, and the outer surface overlay film of rack body is more conducive to the recovery of support, is applicable to the treatment of optimum biliary tract.
3, an end of rack body has the anti-film lobe that backflows, and can effectively play the anti-effect of backflowing.
4, the specification shape of support (main body two ends shape, bore and length) variation more, the treatment demand of suitable different purposes reaches the satisfactory therapeutic effects that varies with each individual.
5, utilize the variation of the whole angle of support, make support be more suitable for human anatomy.
6, simple in structure, easily manufactured, one-shot forming can realize large-scale industrial production, and cost is lower.
7, wide adaptability of the present utility model, it is except that being suitable for treating the stenosis of bile duct that all kinds of malignant tumor cause/blocking, also can be used for the treatment of all kinds of optimum biliary tract, comprise stenosis of bile duct due to cholangitic stenosis, traumatic biliary stricture, Medicinal Biliary Tract Injury, biliary anastomosis stenostomy, gallbladder leakage/fistula, after liver transplantation biliary complications, the pancreatitis, sclerosing cholangitis, hemobilia or the like.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of facing of the anti-film lobe that backflows of the present utility model.
Fig. 3 is the structural representation of facing of the anti-film lobe that backflows of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described.
Embodiment one.
As shown in Figure 1, 2, 3.
A kind of biliary tract antireflux support, comprise bracing frame 1, described bracing frame 1 is for weaving latticed cylindrical structure that form, hollow by the ti-ni shape memory alloy silk, the inner surface of latticed cylindrical body supports frame 1 or outer surface are covered with medical silica-gel film or PTFE rete 2, point at latticed cylindrical body supports frame 1 the anti-film lobe 3 (material can adopt silica gel thin film or PTFE material) that backflows is installed on the duodenal end.
The axial line of described latticed cylindrical body supports frame 1 can be straight line, curve, broken line or its combination, and correspondingly described latticed cylindrical body supports frame 1 is right circular cylinder, Qu Zhuti or the polyline shaped cylinder that is formed by connecting by the right circular cylinder transitions smooth that equates with broken line quantity.
The one or both ends of cylindrical body supports frame 1 can be planar shaped, mushroom-shaped, C shape or sphere (as shown in Figure 1) structure, and the described anti-film lobe 3 that backflows is installed on the proximal face 4 of latticed cylindrical body supports frame 1 of corresponding planar shaped, mushroom-shaped, C shape or spherical structure
Latticed cylindrical body supports frame 1 weaves shaping by the Ti-Ni alloy silk in the helix mode, the shape diamondwise of grid.
Can be during concrete the manufacturing with Ti-Ni alloy silk material with the die surface winding of the mode of positive and negative helix along a certain cylindrical shape (cylindrical centrage or be straight line, curve, broken line or its assemble line), form the cylinder of forming with network after the demoulding, promptly bracing frame 1; Heat-treat typing then.Bracing frame 1 inner surface coats one deck silica gel thin film or PTFE thin film 2.Silica gel thin film or PTFE material the anti-spherical male skinning lobe molding on mould earlier of backflowing is fixed on an end of bracing frame then.
This operation principle with the anti-support that backflows of biliary tract ti-ni shape memory alloy silk braiding, that make with medical grade silicon rubber or PTFE overlay film, mainly be biocompatibility, shape memory function and elastic performance and medical grade silicon rubber or the PTFE sealing of utilizing ti-ni shape memory alloy, medical grade silicon rubber or PTFE.1 pair of biliary tract of mesh-supported frame with the braiding of ti-ni shape memory alloy silk material plays expansion and supporting role.The overlay film 2 of support upper inner surface can prevent the restenosis after support is inserted to a certain extent.
The anti-film lobe 3 that backflows of present embodiment adopts spherical shell structure, the cross section figure of spherical shell preferably is crescent shape (shown in Fig. 1 right-hand member) during concrete enforcement, the opening of spherical shell points to duodenum, in order to realize the purpose of unidirectional folding, the upper edge of spherical shell links to each other with bracing frame 1 and (also can link to each other with medical silica-gel film or the PTFE rete 2 on it,), making it be equivalent to hinge is contained on the bracing frame 1, with box lunch when the normal stool, gallbladder shrinks, bile can make the anti-film lobe 3 that backflows rotate in the counterclockwise direction when the left end of bracing frame flows to right-hand member, thereby make bile flow in the duodenum smoothly, it is sagging and be positioned at the outside of the proximal face 4 of bracing frame 1 that the anti-film lobe 3 that backflows downward is the pendulum shape, like this when gallbladder does not shrink, when backflowing flow direction bracing frame 1, at first promote anti-film lobe 3 clockwise directions that backflow and rotate, thereby by the ball face sealing effect fluid passage that forms in the bracing frame 1 is blocked, reached anti-purpose of backflowing.
Embodiment two.
This embodiment is the variation of embodiment one, to embodiment one in the explanation the identical part detailed of 26S Proteasome Structure and Function.
As shown in Figure 1, the outer surface of the network shape cylindrical body supports frame 1 of the related overlay film antireflux support of present embodiment is covered with medical silica-gel film or PTFE film 2.The outer surface overlay film not only can prevent the restenosis after support is inserted to a certain extent, and can make rack surface more lubricated, and the taking-up that is more conducive to support is reclaimed, and is applicable to the treatment of optimum obstruction of biliary tract.
This shows that the designed anti-support that backflows of biliary tract overlay film of this utility model can satisfy clinical needs on structure and operation principle, can reach the ideal anti-purpose of backflowing, and can take out recovery easily in case of necessity.
This description does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (4)
1, a kind of biliary tract antireflux support, comprise bracing frame (1), it is characterized in that described bracing frame (1) is for weaving latticed cylindrical structure that form, hollow by the ti-ni shape memory alloy silk, the inner surface of described latticed cylindrical body supports frame (1) or outer surface are covered with medical silica-gel film or PTFE rete (2), point at latticed cylindrical body supports frame (1) the anti-film lobe (3) that backflows is installed on the duodenal end.
2, biliary tract antireflux support according to claim 1, it is characterized in that the axial line of described latticed cylindrical body supports frame (1) or be straight line, or be curve, or be broken line, or be their combination, correspondingly described cylinder is right circular cylinder, Qu Zhuti or the polyline shaped cylinder that is formed by connecting by the right circular cylinder transitions smooth that equates with broken line quantity.
3, biliary tract antireflux support according to claim 1, the one or both ends that it is characterized in that described latticed cylindrical body supports frame (1) are planar shaped, mushroom-shaped, C shape or spherical structure, and the described anti-film lobe (3) that backflows is installed on corresponding planar shaped, mushroom-shaped, C shape or the cylindrical proximal face of spherical structure (4).
4, biliary tract antireflux support according to claim 1, it is characterized in that the described anti-film lobe (3) that backflows is a spherical shell structure, the opening of spherical shell points to duodenum, and its upper edge links to each other with bracing frame (1), its downward outside that is the pendulum shape and is positioned at the proximal face (4) of bracing frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311566U CN201150581Y (en) | 2008-01-29 | 2008-01-29 | Biliary tract anti-countercurrent stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200311566U CN201150581Y (en) | 2008-01-29 | 2008-01-29 | Biliary tract anti-countercurrent stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201150581Y true CN201150581Y (en) | 2008-11-19 |
Family
ID=40126267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200311566U Expired - Lifetime CN201150581Y (en) | 2008-01-29 | 2008-01-29 | Biliary tract anti-countercurrent stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201150581Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103505308A (en) * | 2013-09-29 | 2014-01-15 | 中国人民解放军第二军医大学 | Anti-regurgitation biliary stent |
| CN106308985A (en) * | 2015-07-03 | 2017-01-11 | 上海交通大学医学院附属新华医院 | Anti-backflow biliary tract drainage support |
| CN106963526A (en) * | 2017-04-25 | 2017-07-21 | 天津大学 | A kind of blocked flake type anti-reflux support |
-
2008
- 2008-01-29 CN CNU2008200311566U patent/CN201150581Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103505308A (en) * | 2013-09-29 | 2014-01-15 | 中国人民解放军第二军医大学 | Anti-regurgitation biliary stent |
| CN103505308B (en) * | 2013-09-29 | 2015-10-07 | 中国人民解放军第二军医大学 | A kind of anti-reflux biliary tract rack |
| CN106308985A (en) * | 2015-07-03 | 2017-01-11 | 上海交通大学医学院附属新华医院 | Anti-backflow biliary tract drainage support |
| CN106308985B (en) * | 2015-07-03 | 2020-08-25 | 上海交通大学医学院附属新华医院 | Anti-reflux biliary drainage stent |
| CN106963526A (en) * | 2017-04-25 | 2017-07-21 | 天津大学 | A kind of blocked flake type anti-reflux support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210061 Nanjing Province, Pukou District, Nanjing hi tech Development Zone, hi tech Road No. three, No. 10, No. Patentee after: Hu Bing Patentee after: MICRO-TECH (NANJING) CO., LTD. Address before: 210061 Nanjing Province, Pukou District, Nanjing hi tech Development Zone, hi tech Road No. three, No. 10, No. Patentee before: Hu Bing Patentee before: Nanjing Micro-Tech Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170303 Address after: 210061 Nanjing Province, Pukou District, Nanjing hi tech Development Zone, hi tech Road No. three, No. 10, No. Patentee after: Hu Bing Address before: 210061 Nanjing Province, Pukou District, Nanjing hi tech Development Zone, hi tech Road No. three, No. 10, No. Patentee before: Hu Bing Patentee before: MICRO-TECH (NANJING) CO., LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081119 |
|
| CX01 | Expiry of patent term |