CN202637199U - Spiral degradable esophageal stent - Google Patents
Spiral degradable esophageal stent Download PDFInfo
- Publication number
- CN202637199U CN202637199U CN 201220198703 CN201220198703U CN202637199U CN 202637199 U CN202637199 U CN 202637199U CN 201220198703 CN201220198703 CN 201220198703 CN 201220198703 U CN201220198703 U CN 201220198703U CN 202637199 U CN202637199 U CN 202637199U
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- stent
- degradable
- esophageal stent
- spiral
- esophageal
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Abstract
The utility model belongs to the field of medical treatment esophageal stents and specifically relates to a spiral degradable esophageal stent. Trumpet-shaped hollow cylindrical net bodies are arranged at two ends of the esophageal stent, the net bodies are composed of rhombic basic units, the tail end of the stent is in a skirt-edge-shaped structure, and the spiral degradable esophageal stent is formed by mutually interweaving filaments prepared by degradable polymers on a self-made die. According to the spiral degradable esophageal stent, the esophageal stent is subjected to a special structural design, the problems that the esophageal stent is prone to slide and food flows back during usage can be effectively solved, by means of the improvement of the weaving method, the weaving process is easy to control, the mechanical property of the stent is enhanced through diameter adjustment of the filaments, and the stent has a wide application prospect.
Description
Technical field
This utility model belongs to medical Esophageal Stent field, is specifically related to a kind of spiral type degradable Esophageal Stent.
Background technology
Esophageal Stent can effectively solve the repairing problem of good pernicious esophagostenosis and various esophagostomas, and the implantation surgery wound is little, does not need general anesthesia, makes it become an important selection for the treatment of esophagus relevant disease.At present, domestic Medical rack for the esophagostenosis interventional therapy substantially all is the Ultimum Ti metal rack after establishment, it can prevent effectively that organ is inaccessible or narrow, but the application of metal rack also comes with some shortcomings, such as the metal rack that forever the retains reaction that causes inflammation easily, metal rack also can discharge the toxic metals ions such as Ni, in addition, whether support can still require study in fatigue fracture, thereby in case and the support accidental can only adopt the method for operation to take out to bring extra misery to patient, these have all limited the application of metal rack in the esophagus interventional therapy.The degradable Esophageal Stent with need not take out after metal rack is compared expansion, it is painful to have alleviated patient, is subject to extensive high praise.
Esophageal Stent has various shape, and wherein tubulose is modal.Tubular bracket mainly is divided into two types, and the first is the net grid support that similar sinusoidal wave form annular support body is sequentially arranged vertically, such as application number is
201010034532.9Patent disclosure a kind of sinusoidal wave form cochrome arterial bracket; The second is the helical stent that is woven into by twine, such as application number is
200910177884.7Patent disclosure a kind of spiral type biodegradable stent.
Present Esophageal Stent substantially all is the helical tubular support, and support shin pattern mostly is greatly rhombus.Adopt this structure to mainly contain following three reasons: 1. adopting rhombus is the helical structure that elementary cell forms, and makes support radial support power after supporting large, and axially pliability is good; 2. this structure is when support is crooked, the inside and outside wall surfacing, and the tube wall locomotivity is little in the process of opening; 3. the elementary cell quantity of support shin pattern, size and establishment all can determine according to pathological changes official jargon size and dimension with reference to mould, so it is good also to have an adaptability, and broad-spectrum advantage.But this support still has the some shortcomings part.Such as application number be
200910177884.7Patent disclosure a kind of spiral type biodegradable stent, after this support is implanted esophagus, slide easily, do not reach the purpose for the treatment of.
Summary of the invention
The purpose of this utility model is to provide a kind of spiral type degradable Esophageal Stent, solved the support of support in the esophagus interventional therapy is used and has been difficult to fix, food reflux and need the problem such as secondary taking-up.
The spiral type degradable Esophageal Stent that the utility model proposes, described support is dictyosome, described dictyosome is flaring hollow cylinder body structure, the flared structure end is shirt rim shape structure, described dictyosome is comprised of the rhombus elementary cell, and interweaving with weaving by filament forms, and the described diamond-shaped element length of side is
0.2 ~ 5 mm
In this utility model, described dictyosome diameter is
10 ~ 50 mm, length is
15 ~ 150 mm
Manufacture method of the present utility model is: spiral type degradable Esophageal Stent is worked out being interweaved from molding jig by the filament of degradable polymer preparation, and wherein the degradable filament diameter is straight
0.05 ~ 2 mmFilament; Degradable polymer is selected from copolymer or the blend of one or several polymer in the degradable polymer materials such as polylactic acid, polycaprolactone, polyglycolic acid, polylcaprolactone, polyhydroxybutyrate valerate, Polyethylene Glycol, degradable polyurethane, and the molecular weight control of polymer exists
1.5 ~ 75Ten thousand.
With respect to scheme of the prior art, advantage of the present utility model is:
1,Improve on basis in conventional helical shape biodegradable stent structure, increased flared structure at the support two ends, make support fixing easily in esophagus, and make the easier support that passes through of food, support convergent divergent channel and lower end flared structure intersection adopt the design of anti-reflux lobe, prevent food reflux;
2,This utility model has been made suitable improvement in preparation method, has strengthened the mechanical property of support, and makes compilation process more be easy to control;
3,This utility model adopts as shown in Figure 2 preparation method, can reach different Treatment need by the diameter that changes filament;
4,This utility model gained support can be strengthened at its surface-coated cancer therapy drug or X-ray developing agent treatment and the diagnosis of esophagel disease, has broad application prospects.
Description of drawings
Fig. 1 is structural diagrams of the present utility model.
Fig. 2 is the diamond-shaped element structural diagrams of dictyosome of the present utility model.
Number in the figure: 1 is filament, and 2 is dictyosome, and 3 is shirt rim shape structure.
The specific embodiment
Further specify by reference to the accompanying drawings this utility model below by embodiment.
Embodiment 1: as shown in Figure 1, the support two ends are flaring hollow cylinder dictyosome, and this dictyosome is comprised of the elementary cell of rhombus, and the support end is shirt rim shape structure, are worked out being interweaved from molding jig by the filament of degradable polymer preparation.
Described dictyosome diameter is
10 ~ 50 mm, length is
15 ~ 150 mmDescribed elementary cell is that the length of side is
0.2 ~ 5 mmRhombus, described shirt rim shape structure is positioned at the Esophageal Stent end, described degradable polymer is selected from copolymer or the blend of one or several polymer in the degradable polymer materials such as polylactic acid, polycaprolactone, polyglycolic acid, polylcaprolactone, polyhydroxybutyrate valerate, Polyethylene Glycol, degradable polyurethane, and the molecular weight control of polymer exists
1.5 ~ 75Ten thousand.The diameter of described degradable filament is
0.05 ~ 2 mm
Claims (2)
1. a spiral type degradable Esophageal Stent is characterized in that described support is dictyosome, and described dictyosome is flaring hollow cylinder body structure, the flared structure end is shirt rim shape structure, described dictyosome is comprised of the rhombus elementary cell, and interweaving with weaving by filament forms, and the described diamond-shaped element length of side is
0.2 ~ 5 mm
2. spiral type degradable Esophageal Stent according to claim 1 is characterized in that described dictyosome diameter is
10 ~ 50 mm, length is
15 ~ 150 mm
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198703 CN202637199U (en) | 2012-05-07 | 2012-05-07 | Spiral degradable esophageal stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198703 CN202637199U (en) | 2012-05-07 | 2012-05-07 | Spiral degradable esophageal stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202637199U true CN202637199U (en) | 2013-01-02 |
Family
ID=47406389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220198703 Expired - Fee Related CN202637199U (en) | 2012-05-07 | 2012-05-07 | Spiral degradable esophageal stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202637199U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095696A (en) * | 2013-04-08 | 2014-10-15 | 上海市同济医院 | Intraesophageal stent used for esophageal rupture and stomal leak plugging |
| CN104382671A (en) * | 2014-09-11 | 2015-03-04 | 南京微创医学科技有限公司 | Degradable human body stent capable of effectively preventing transposition and reducing hyperplasia and manufacturing method |
| CN105943199A (en) * | 2016-05-31 | 2016-09-21 | 李晓东 | Aortic windowing branch covered stent |
| WO2017100977A1 (en) * | 2015-12-14 | 2017-06-22 | 北京阿迈特医疗器械有限公司 | Individualized polymer stent and manufacturing method therefor and use thereof |
| CN106901880A (en) * | 2017-02-04 | 2017-06-30 | 同济大学 | Expand preparation and the application process of formula self expandable developable degradable polyurethane urethra rack in two ends |
| CN108309522A (en) * | 2018-02-10 | 2018-07-24 | 青岛大学 | A kind of biodegradable anti-displacement Esophageal Stent and preparation method |
| CN111315319A (en) * | 2017-11-01 | 2020-06-19 | 波士顿科学国际有限公司 | Esophageal stent comprising valve member |
-
2012
- 2012-05-07 CN CN 201220198703 patent/CN202637199U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104095696A (en) * | 2013-04-08 | 2014-10-15 | 上海市同济医院 | Intraesophageal stent used for esophageal rupture and stomal leak plugging |
| CN104095696B (en) * | 2013-04-08 | 2016-06-29 | 上海市同济医院 | For the stent in esophagus that ER and anastomotic leakage block |
| CN104382671A (en) * | 2014-09-11 | 2015-03-04 | 南京微创医学科技有限公司 | Degradable human body stent capable of effectively preventing transposition and reducing hyperplasia and manufacturing method |
| WO2017100977A1 (en) * | 2015-12-14 | 2017-06-22 | 北京阿迈特医疗器械有限公司 | Individualized polymer stent and manufacturing method therefor and use thereof |
| CN105943199A (en) * | 2016-05-31 | 2016-09-21 | 李晓东 | Aortic windowing branch covered stent |
| CN106901880A (en) * | 2017-02-04 | 2017-06-30 | 同济大学 | Expand preparation and the application process of formula self expandable developable degradable polyurethane urethra rack in two ends |
| CN111315319A (en) * | 2017-11-01 | 2020-06-19 | 波士顿科学国际有限公司 | Esophageal stent comprising valve member |
| CN108309522A (en) * | 2018-02-10 | 2018-07-24 | 青岛大学 | A kind of biodegradable anti-displacement Esophageal Stent and preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150507 |
|
| EXPY | Termination of patent right or utility model |