CN201008589Y - Cavity path bracket with super elastic force structure - Google Patents
Cavity path bracket with super elastic force structure Download PDFInfo
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- CN201008589Y CN201008589Y CNU2006201501836U CN200620150183U CN201008589Y CN 201008589 Y CN201008589 Y CN 201008589Y CN U2006201501836 U CNU2006201501836 U CN U2006201501836U CN 200620150183 U CN200620150183 U CN 200620150183U CN 201008589 Y CN201008589 Y CN 201008589Y
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Abstract
The utility model relates to an antrum channel bracket with a supper elasticity structure. The utility model is a net shaped structure and includes a plurality of poles with even positive rotation undulated supporting structure. The antrum channel bracket is provided with better radial supporting intensity and axial flexibility under the condition that the parts of different antrum channels are restricted, and is arranged on a towveyor, after the focus is charged and expanded, the utility model can keep a better and ideal combining site of fixing force and flexibility, and is convenient to enter the meandrous antrum channel. The utility model can be used for curing diseases of antrum channel narrowing and jamming. The total length of the bracket is 10 to 60 mm, the outside diameter is 3.0 to 16mm, the thickness of wall is 0.2 to 0.8 mm, and the tendon width of an axial connector is less than or equal to the tendon width of a radial cirque unit. The utility model has the advantages of big camber of the long shaft, strong radial supporting force, good adaptability of the antrum channel, small occupying area ratio of the metal space, simply and applied structure and easy production and processing.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to a kind of orifice bracket that has than strong elasticity.
Background technology
Interventional medicine is called as the tertiary medicine after surgery and medicine, and it has started a kind of brand-new therapeutic treatment method.Endoluminal stent is a new interventional therapeutic technique that grows up on the basis of foley's tube plasty.Progressively be applied to clinical in the later stage eighties abroad.The endoluminal stent work of China starts from 1992, and its purpose by the inner support implantation, is kept its function to rebuild tube chamber to various tumors and the caused luminal stenosis of other reason.Along with going deep into of various basic research and clinical treatment, at present endoluminal stent has all had further raising in the research of theory, operation, the scope of application and curative effect, as the specific type support of novelty, also progressively enter into from the experimental stage clinical.This utility model relates to a kind of be applied to body cavities expansion, the localized super elastic force supporting structure design of shaping.
At present, endoluminal stent mainly is divided into following several:
Helical stent, by single temperature memory metallic coil around forming characteristics: support force is strong, and compliance is good, is convenient to reclaim, and is applicable to that branchiess tube chamber supports.Shortcoming: easily lodging.
The net metal inner support is generally formed by stainless steel silk, nitinol alloy wire braiding, and be characterized in: the support compliance is good, and it is convenient to discharge, and generally is used for esophagus, biliary tract etc.
Z type support is made by stainless steel silk, and merogenesis connects, and advantage: support force is strong, and the X line is visual good down, and the gap is big, and surface area is little, shortcoming: compliance is poor.
The plastics endoprosthesis is made of plastics, and its support force is strong, but easily slippage, internal diameter is little, easily blocks.As biliary tract endoprosthesis, lacrimal canal bracket.
The utilization of support in treatment body internal cavity internal organs are narrow:
1, esophagus benign and malignant stenosis
The reason that causes esophageal stricture is a lot, modal is that growth owing to esophageal carcinoma causes esophageal stricture, its mortality rate occupies second of various tumor mortality rates, next is because the local compression or the infiltration of mediastinal tumor transfer back or pulmonary carcinoma cause, general end-stage patients have tangible dysphagia, and the cachexia state takes place.For the esophageal stricture that this malignant tumor causes, many at present opinions give inner support palliative treatment method, thereby alleviate the symptom of dysphagia, postpone the time that cachexia occurs, and improve life quality, prolong patient's life span.Generally select the band film for use or not with the Wallstent or the Z type support of film.The capable inner support plasty of esophageal stricture that report 59 routine various tumors such as Bulent Acanas cause is all succeeded.Pocek etc. have reported 27 routine patients have been carried out the inner support plasty, make its postoperative life span reach 4-15 month, average 8.3 months, and dysphagia all has improvement in various degree.
2, the treatment of esophago-tracheal fistula
Cancerous tissue is invaded esophagus and trachea, and neoplasm necrosis forms fistula.Also can cause tumor and tumor periphery necrosis of normal tissue to form the fistula road by local radiotherapy or chemotherapy.In case the fistula road forms, food easily enters by the fistula road and causes serious intrapulmonary infection in the lung, accelerates patient's death.Treated by operation, owing to suffer from the in poor condition of health of this patient, most patients can not be performed the operation final death in the past.Along with the birth of overlay film frame, make treatment esophagus and tracheal fistula become possibility.Its principle is to adopt physical method to hide the fistula mouth, can remove the esophageal stricture that merges simultaneously and occur, and can recover feed at once, effectively controls aspiration pneumonitis, improves patient's body constitution.
3, the treatment of malignant obstructive jaundice
Malignant obstructive jaundice generally is owing to malignant tumor such as bile duct, pancreas, primary hepatocarcinoma, hepatic portal portion metastatic carcinoma, hepatic portal portion lymphatic metastasis cancer compressings and invades bile duct and cause, patient's jaundice is obvious, ordinary circumstance is poor, the red matter mass formed by blood stasis of secular high gallbladder to the liver function infringement greatly can cause patient dead in a short time.Reached and subtracted yellow purpose by operation or T type pipe external drainage in the past, but since this patient's body constitution extreme difference often can't treat owing to lose the surgical engine meeting.After reaching external drainage or interior drain by PTCD technical feasibility percutaneous transhepatic puncture at present; go the Stent at biliary tract position again; the purpose of drain in reaching; jaundice is disappeared in a short time; both protected liver function; lay good basis for next step treatment again, also avoided simultaneously because the Digestive system that the bile external drainage is caused is lost and the electrolyte disturbance phenomenon.It is logical again that the support effect just forms biliary tract, can not play therapeutical effect to tumor itself, but can obviously alleviate jaundice, improves patient's life quality in late period, prolongs life span, for chemicotherapy creates conditions, plays significance.
4, the treatment of other digestive tract position malignant obstruction
Malignant obstruction such as stomach, duodenum, rectum, sigmoid colon are because the direct tumor growth at above-mentioned position or metastatic carcinoma, other position tumor are oppressed institute indirectly and caused, by the plasty of inner support, also can reach logical again purpose.Because the duodenum position is far away, operation is generally difficult.
5, the treatment of trachea, bronchial stenosis
Tracheobronchial narrow often because the direct compressing of tumor, mediastinal tumor and the mediastinum metastatic tumor of air flue itself, esophageal tumor, lung tumor and soak into growth cause.Clinically, common have an acute serious symptom dyspnea, the performance three concave sign, patient has dying sense, and is as untimely treatment, then dead in a short time, can reach the effect of coming back to life at the narrow implantation of carrying out support in emergency treatment trachea, the bronchus, the reduction of patient dyspnea can improve patient's life span for chemicotherapy creates conditions again immediately.
6, the treatment of stenosis of naso lacrimal duct
The reason that lacrimal passage is obstructed is a lot, and modal reason is: spontaneous inflammation and cicatrix cause.For the treatment of this disease, by surgical operation, both dacryocystorhinostomies (DCR).Can with 6F polyamine fat eyelid retractor, insert narrow, thereby make the epiphora transference cure by the therapy that gets involved at present.
The use in conjunction of endoluminal stent and other Therapeutic Method:
Endoluminal stent all has good therapeutical effect to esophagus, air flue, biliary tract, ureteral malignant stricture and esophagus, tracheal fistula at present, and its effect mainly is to make tract logical again, improves patient's life quality.Therefore, the therapeutic alliance for other method is absolutely necessary.What at present utilization was maximum is, inserting after inner support makes narrow tube chamber unobstructed, gives the treatment of radiotherapy, chemotherapy, optical dynamic therapy and tumor by local cancer therapy drug etc.
The effect of orifice bracket comprises the elastical retraction after the reduction tract plasty, and sealing tract inner membrance is torn sheet, and the incidence rate of acute obturation when reducing intervene operation reduces the incidence rate of restenosis etc.Ideal support should have the observability under the X line, uses flexibility, features such as stability and stationarity.Yet various supports in the market can not realize that still the axial pliability and the radial support power of perfect unity, particularly support of every technical specification is relatively poor, and the adherent property of tract is not good, is not suitable for bending, become the bigger tract in angle.
The purpose of this utility model provides a kind of orifice bracket with super elastic structure, reaches on the basis of the big support force of support, increases the compliance of support.On the basis of inheriting above-mentioned support advantage, overcome existing supporting structure and have the support force deficiency, support covers the excessive and flexible problem of shortage of area of organizing.
Summary of the invention
A kind of orifice bracket with super elastic structure is a webmaster shape structure, comprises the wavy supporting construction bar composition of a plurality of even dextrorotations, and dextrorotation ripple radian wherein is the standard circular arc, to improve its radial support dynamics.The number of its sine wave period is an even number, and every interval is a pair of or several to relative crest, has an axial sinusoidal wave form connecting rod to run through radial struts.
Its webmaster shape architectural feature is, by a plurality of uniformly axially and radially the wavy support bar of dextrorotation form, the quantity of its axial support bar can greater than, be less than or equal to the quantity of radial strut, its quantitative proportion is 1: 10 to 10: 1.Radial and axial when crossing, because its radian unanimity has one section connecting rod total.Each parameter is by the thickness of tract, position and deciding.For thick tract, the optional bigger numerical value of the number of radial and axial sine wave period, the original outer diameter of support adopts the upper limit; For thin tract, in the sinusoidal wave form annulus cell cube structure, the number of its sine wave period can be selected less numerical value for use, and original outer diameter then adopts lower limit, can be prepared into series of products.
The wavy support bar of its dextrorotation is characterised in that, the axial wide circular radial ring element body muscle width that is less than or equal to of connector muscle, and its quantitative proportion is 1: 1-1: 3.By adjusting axial connector muscle width, change the rigidity of support, increase compliance.When requiring rigidity big,, can increase the width of the axial dowel of support as under tract calcification serious situation.Otherwise, under the situation of tract distortion or relatively bending, when requiring the support pliability better, then reduce the wall thickness of support, reduce the width of all muscle.The amount of rigidity of support for a change, this Several Parameters can be united use, also can use separately.Axially the connector muscle is wide in addition not only can equal, but also can so both guarantee radial support intensity less than circular radial ring element body muscle width, again can be by wide the narrowing down of axial connector muscle, enough major axis abilities are provided, finally can make support reach hard and soft bonded optimum efficiency.
A kind of orifice bracket with super elastic structure according to claim 1, its length overall is 10～60mm, external diameter 3.0～16mm, wall thickness 0.2～0.8mm.Sinusoidal wave form annulus cell cube structural entity is wide to be 0.1～1.5mm.Stent length is to control by the number that increases or reduce sinusoidal wave circular cell body structure, and it is fixed that it selects for use principle to come according to the length of tract focus, and selected stent length should be a bit larger tham focus length.The support material is high molecule plastic, degradable metal material or the degradable polymer material of Stainless Steel, Ultimum Ti, cobalt complexation gold, biocompatibility.Ultimum Ti is self expandable fast, and adherent property is better.Other metal can adopt the inflated expansion.
Rack outer surface can reach not covered stnet for the band film, and coating material mainly comprises: silicones (Silicone), polyester Polyester, politef Polyletrafloroe-thylene (PTFE), poly-inferior peace fat Polyurethane (SPP) and copolymer or real silk.
Support with above structure and described material can be applicable to, for example:
1, orifice bracket.Can be applicable to biliary tract, esophagus, tracheaectasy, etc. many organs.
2, also can be by tract and cavity/canal drug administration, drug conveying, location release, location radiotherapy, treatment kinds of tumors and cancer.
The utility model has the advantages that major axis bendable curvature is big, radial support power is strong and the tract compliance is good, according to different focuses, can change axially and radially quantitative proportion, the muscle width of sinusoidal wave annulus cell cube and the wall thickness of support of the wavy support bar of dextrorotation, thereby adjust its pliability, be easy to enter full of twists and turns tract, this supporting structure is simple, production and processing is convenient in practicality.
Description of drawings
Fig. 1 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that this support is by several sinusoidal wave form annulus cell cubes (1) structure, axially and radially forms the unit (2) of each sealing by it.
Fig. 2 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
Fig. 3 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
Fig. 4 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
The specific embodiment
Example one: Fig. 1 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that this support is by several sinusoidal wave form annulus cell cubes (1) structure, axially and radially forms the unit (2) of each sealing by it.
Example two: Fig. 2 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure, form that the quantity of its axial support bar is less than the quantity of radial strut, axial sinusoidal wave support bar of the sine wave of per 2 radial support connection by a plurality of uniformly axially and radially wavy support bars of dextrorotation.
Example three: Fig. 3 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that is made up of a plurality of uniformly axially and radially wavy support bars of dextrorotation, the quantity of its axial support bar is less than the quantity of radial strut, radial strut can be every two or three unit appearance once.Discontinuous local connecting rod forms a bigger closed loop.
Example four: Fig. 4 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that is made up of a plurality of uniformly axially and radially wavy support bars of dextrorotation, the quantity of its axial support bar is less than the quantity of radial strut, radial strut can be every two or three unit appearance once.Discontinuous local connecting rod forms a bigger closed loop.
Claims (5)
1. one kind has super elastic structure orifice bracket, it is characterized in that, is webmaster shape structure, comprises the wavy supporting construction bar composition of a plurality of even dextrorotations, and dextrorotation ripple radian wherein is the standard circular arc.
2. a kind of super elastic structure orifice bracket that has according to claim 1, it is characterized in that, webmaster shape structure is made up of a plurality of uniformly axially and radially wavy support bars of dextrorotation, the quantity of its axial support bar can greater than, be less than or equal to the quantity of radial strut, its quantitative proportion is 1: 10-10: 1.
3. a kind of super elastic structure orifice bracket that has according to claim 1 is characterized in that, the wide circular radial ring element body muscle width that is less than or equal to of the axial connector muscle of the wavy support bar of dextrorotation, and its quantitative proportion is 1: 1-1: 3.
4. a kind of super elastic structure orifice bracket that has according to claim 1 is characterized in that support length overall 10～60mm, external diameter 3.0～16mm, wall thickness 0.2～0.8mm.
5. a kind of super elastic structure orifice bracket that has according to claim 1 is characterized in that the support material is a Stainless Steel, Ultimum Ti, the high molecule plastic of cobalt complexation gold or biocompatibility, degradable metal material or degradable polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201501836U CN201008589Y (en) | 2006-12-05 | 2006-12-05 | Cavity path bracket with super elastic force structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201501836U CN201008589Y (en) | 2006-12-05 | 2006-12-05 | Cavity path bracket with super elastic force structure |
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| Publication Number | Publication Date |
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| CN201008589Y true CN201008589Y (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201501836U Expired - Fee Related CN201008589Y (en) | 2006-12-05 | 2006-12-05 | Cavity path bracket with super elastic force structure |
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| CN (1) | CN201008589Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448407A (en) * | 2009-09-16 | 2012-05-09 | 泰尔茂株式会社 | Stent for placement in living body, and stent delivery system |
| CN102711677A (en) * | 2009-10-06 | 2012-10-03 | 动脉再造技术股份有限公司 | Bioresorbable vascular implant having homogenously distributed stresses under a radial load |
| CN103356315A (en) * | 2013-07-23 | 2013-10-23 | 苏州英络医疗器械有限公司 | Intravascular stent applied to interventional operation as well as use method, manufacturing method and manufacturing device of intravascular stent |
| CN105877872A (en) * | 2015-01-13 | 2016-08-24 | 北京普益盛济科技有限公司 | Sleeving bracket for coronary artery bypass vessels |
| CN109125893A (en) * | 2013-02-28 | 2019-01-04 | 波士顿科学国际有限公司 | The medical device used along biliary tract and/or ductus pancreaticus |
-
2006
- 2006-12-05 CN CNU2006201501836U patent/CN201008589Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102448407A (en) * | 2009-09-16 | 2012-05-09 | 泰尔茂株式会社 | Stent for placement in living body, and stent delivery system |
| CN102448407B (en) * | 2009-09-16 | 2015-05-20 | 泰尔茂株式会社 | Stent for placement in living body, and stent delivery system |
| CN102711677A (en) * | 2009-10-06 | 2012-10-03 | 动脉再造技术股份有限公司 | Bioresorbable vascular implant having homogenously distributed stresses under a radial load |
| CN102711677B (en) * | 2009-10-06 | 2015-05-06 | 动脉再造技术股份有限公司 | Bioresorbable vascular implant having homogenously distributed stresses under a radial load |
| CN109125893A (en) * | 2013-02-28 | 2019-01-04 | 波士顿科学国际有限公司 | The medical device used along biliary tract and/or ductus pancreaticus |
| CN103356315A (en) * | 2013-07-23 | 2013-10-23 | 苏州英络医疗器械有限公司 | Intravascular stent applied to interventional operation as well as use method, manufacturing method and manufacturing device of intravascular stent |
| CN103356315B (en) * | 2013-07-23 | 2016-05-25 | 苏州茵络医疗器械有限公司 | For intravascular stent and using method and manufacture method and the manufacturing equipment of intervene operation |
| CN105877872A (en) * | 2015-01-13 | 2016-08-24 | 北京普益盛济科技有限公司 | Sleeving bracket for coronary artery bypass vessels |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN BAICHANG MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TIANJIN BAICHANG MEDICAL EQUIPMENT SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20140704 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140704 Address after: 300384 Tianjin Huayuan Industrial Park Rong Yuan Road No. nine floor room 104-106 Patentee after: Tianjin bestchance Medical Devices Co. Address before: 300384 Tianjin Huayuan Industrial Park Rong Yuan Road No. nine Patentee before: Tianjin Bestchance Medical Device Science&Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cavity support with super elastic structure Effective date of registration: 20140801 Granted publication date: 20080123 Pledgee: Tianjin Mingxin microfinance Co., Ltd. Pledgor: Tianjin bestchance Medical Devices Co. Registration number: 2014120000036 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20141205 |
|
| EXPY | Termination of patent right or utility model |