CN105193530A - Trans-articular vascular stent with movable joint connecting mode - Google Patents
Trans-articular vascular stent with movable joint connecting mode Download PDFInfo
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- CN105193530A CN105193530A CN201510774757.0A CN201510774757A CN105193530A CN 105193530 A CN105193530 A CN 105193530A CN 201510774757 A CN201510774757 A CN 201510774757A CN 105193530 A CN105193530 A CN 105193530A
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Abstract
The invention discloses a trans-articular vascular stent with a movable joint connecting mode. The trans-articular vascular stent comprises an upper netting bracket section and a netting bracket section, and is characterized by being provided with a universal connecting telescopic device, an upper connecting ring and a lower connecting ring, wherein the upper connecting ring is fixed at an end part of the upper netting bracket section, the lower connecting ring is fixed at an end part of the netting bracket section, and the upper netting bracket section is fixedly connected with the netting bracket section by virtue of the universal connecting telescopic device. By adopting the structure, the trans-articular vascular stent disclosed by the invention has the advantages of novel structure, small operation wound, short operation time, simple operation, fatigue flexion-extension resistance and the like.
Description
Technical field
The present invention relates to technical field of medical instruments, specifically a kind of trans-articular intravascular stent being connected pattern with movable joint.
Background technology
As everyone knows, arterial obliterans of lower extremity is mainly because atherosclerosis causes the narrow or inaccessible of arterial lumen, and the Severe Chronic Ischemiaof Lower Extramities caused, there is a series of clinical symptoms and sign, the defect (ulcer and gangrene) of the early stage intermittent claudication of main manifestations, rest pain and tissue.It is relevant to there is situation in Annual occurence rate and age and the risk factors for atherosclerosis of lower Extremity Arterial Diseases.At 30-44 year age bracket, the Annual occurence rate of intermittent claudication is 6/10000ths male, and women is 3/10000ths, and be about 61/10000ths at 65-74 year age bracket male sickness rate, women is elevated to 54/10000ths, and crowd's sickness rate is high.According to length and the position difference of pathological changes, therapeutic modality is different, mainly contains open surgery, intracavity recovery technique, hybridization technique etc.Intracavity recovery technique have wound little, recover the feature such as fast, operating time is short, clinical practice more and more, the old people Chang Zuowei preferred option especially more to underlying diseases, anesthetic risks is higher.
But for the lower extremity artery pathology of trans-articular, comprising the arteria iliacofemoralis pathological changes, popliteal arterial disease across hip joint, there is dispute in intracavitary therapy.Because traditional trans-articular blood vessel metal rack is in the curvature movement repeatedly in live body joint, joint mobility is large, support can along with limb activity, trans-articular needs enough compliances to comply with joint motion, therefore, easily there is tinsel flex fatigue fracture repeatedly, and the fatigue fracture position of trans-articular intravascular stent, the overwhelming majority occurs in the intensity of the warpage repeatedly maximum point of institute's trans-articular, blood vessel metal rack ruptures, the support broken ends of fractured bone is caused to be implanted to Endovascular thrombosis, vascellum endometrial hyperplasia, and cause the corresponding vessel lumen restenosis of stenter to implant, inaccessible.In addition, support also needs enough strength support vascular lesions.Although existing many moneys trans-articular stent applications is in clinical, its long-term patency rate there is no compellent data, Ge great support company improves support compliance, produce the better trans-articular support of compliance as everflex, lifestent etc., the report such as Korea S Chang is across the intracavitary therapy effect of Xi Guan Jie popliteal arterial disease patient, within postoperative 6 months, support fracture rate is 61.5%, and patency rate is only 44%.Have scholar to propose to adopt incision trans-articular to put up a bridge or hybridization technique solution trans-articular pathological changes, but traditional operation wound is large, operating time is long; Hybridization operation needs open surgery and DSA operates to carry out simultaneously, complicated operation, and it is higher to anaesthetize requirement.
Through retrieval, CN2010205136077 discloses the utility model patent of a kind of artificial blood vessel, this patent is outer by expanded polytetrafluoroethyltube tube shape, expanded polytetrafluoroethyltube tube shape internal layer, and the metallic support support composition be folded between tubular outer layer and tubular inner layer, described metallic support support in the shape of a spiral, and axially spaced-apart is provided with becket on described metallic support support, although this structure solves and prevents buckling of vessel, can prevent internal organs or joint part from blood vessel is flattened by metal supporting rings, but the deficiency of this structure is: because metallic support support is by independently becket and helical metal wire are formed, when by bracket conveyer, its diameter cannot press poly-shrinkage, in the process that the femoral artery by the conduit of 8mm through caliber being 7-10mm imports to lesion vessels, Accessory injury is caused to blood vessel, unnecessary misery is brought to patient.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, the trans-articular intravascular stent that a kind of novel structure, operation wound are little, operating time is short, simple to operate, resisting fatigue is bent and stretched, wear-resistant, high temperature resistant, high band movable joint of lubricating is connected pattern is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of trans-articular intravascular stent being connected pattern with movable joint, comprise online and compile brace sections and net volume brace sections, it is characterized in that being provided with universal linking retractor device, upper connecting ring and lower connecting ring, described upper connecting ring is fixed on online and compiles brace sections end, described lower connecting ring is fixed on described net and compiles brace sections end, described online volume brace sections is compiled brace sections through universal linking retractor device with net and is fixedly connected with, be beneficial to by universal linking retractor device, while reaching and complying with joint motion, the resisting fatigue also improved in the curvature movement repeatedly in the live body joint of human body trans-articular is repeatedly tortuous, avoid occurring tinsel flex fatigue fracture repeatedly.
Universal linking retractor device of the present invention adopts medical macromolecular materials to make, described universal linking retractor device is overlapped by external extension and interior telescopic forms, described external extension set upper side is compiled support through upper connecting ring with online and is fixedly connected with, bottom and the mutual fit of interior telescopic, described interior telescopic lower end is fixedly connected with lower connecting ring, when the live body joint flexing of human hip, by external extension cover and interior telescopic stretch, repeatedly tortuous with the resisting fatigue improved in the curvature movement repeatedly in the live body joint of human body trans-articular, avoid occurring tinsel flex fatigue fracture repeatedly.
The present invention also can be provided with obtuse ring with the end of the link of interior telescopic by described external extension cover, described obtuse ring is bullet, described obtuse ring outer wall one end is connected with telescopic end winding support and is also close to axle center circular arc mistake gradually downwards vertically, be beneficial to avoid when the live body joint flexing of trans-articular, avoid the sharp property end of telescopic to scratch the IA blood vessel wall of live body, and cause vascellum endometrial hyperplasia.
Universal linking retractor device of the present invention can also be arranged along the circle spacing array of upper connecting ring and lower connecting ring, described universal linking retractor device is made up of telescopic and expansion link, described telescopic upper end is fixedly connected with upper connecting ring, bottom is flexibly connected with expansion link, described expansion link lower end is fixedly connected with lower connecting ring, when the live body joint flexing of human hip, by upper connecting ring and the telescopic of lower connecting ring circumference and stretching or contracting of expansion link, repeatedly tortuous with the resisting fatigue improved in the curvature movement repeatedly in the live body joint of human body trans-articular, avoid occurring tinsel flex fatigue fracture repeatedly.
The present invention also can be provided with obtuse ring in the link end of described telescopic and expansion link, described obtuse ring is bullet, described obtuse ring outer wall has telescopic outer wall to be also close to axle center circular arc mistake gradually downwards vertically, be beneficial to avoid when the live body joint flexing of trans-articular, avoid the sharp property end of telescopic to scratch the IA blood vessel wall of live body, and cause vascellum endometrial hyperplasia.
The present invention can be provided with passage in described telescopic medial wall, centrage and the telescopic axes intersect of described passage are pitched, and the corresponding blood flow direction of its angle, be beneficial to the quick sliding ensureing telescopic and expansion link, avoid producing negative pressure impact to use, meanwhile, in motor process, also reach the effect impacted the blood in support, the row avoiding clot is formed.
The material of universal linking retractor device of the present invention preferably adopts expanded PTFE to make, effectively platelet aggregation is prevented to reach, the formation of the pre-preventing thrombosis of its hydrophobic performance simultaneously, in the curvature movement repeatedly in live body joint, the fatigue strength of the folding strength maximum point of the outstanding trans-articular activity that improves gesture, reaches the effect of the secondary injury that increases the service life, avoids.
Upper connecting ring of the present invention and lower connecting ring are circumferentially crowded around by adjacent stator and flexible mesh sheet to form respectively, described stator is in outwards recessed arcwall face, periphery is mellow and full, described upper JA(junction ambient) stator is fixedly connected with telescopic, described lower JA(junction ambient) stator is fixedly connected with expansion link, be beneficial to compile the flexible of sheet by net and make upper connecting ring and the reduced of lower connecting ring when importing blood vessel, avoid blood vessel wall to cause secondary injury.
The present invention also can compile brace sections lower end at described net and be provided with second universal linking retractor device, and described second universal linking retractor device lower end is fixedly connected with off line volume brace sections, is beneficial to the scope expanding anti-warpage further.
The present invention is owing to adopting said structure, advantages such as having novel structure, operation wound is little, operating time is short, simple to operate, resisting fatigue is bent and stretched.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the structural representation of another kind of embodiment of the present invention.
Reference numeral: brace sections 1, net volume brace sections 2, upper connecting ring 3, lower connecting ring 4 external extension cover 5, interior telescopic 6, telescopic 7, expansion link 8, memorial alloy tension spring 9 obtuse ring 10, obtuse ring 11, stator 12, flexible mesh sheet 13, second universal linking retractor device 14, off line volume brace sections 15 are compiled in online.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, a kind of trans-articular intravascular stent being connected pattern with movable joint, comprise online and compile brace sections 1 and net volume brace sections 2, it is characterized in that being provided with universal linking retractor device, upper connecting ring 3 and lower connecting ring 4, described upper connecting ring 3 is fixed on online and compiles brace sections 1 end, described lower connecting ring 4 is fixed on described net and compiles brace sections 2 end, described online volume brace sections 1 is compiled brace sections 2 through universal linking retractor device with net and is fixedly connected with, be beneficial to by universal linking retractor device, while reaching and complying with joint motion, the resisting fatigue also improved in the curvature movement repeatedly in the live body joint of human body trans-articular is repeatedly tortuous, avoid occurring tinsel flex fatigue fracture repeatedly.
Universal linking retractor device of the present invention adopts medical macromolecular materials to make, described universal linking retractor device is made up of external extension cover 5 and interior telescopic 6, described external extension overlaps 5 upper ends and compiles support 1 through upper connecting ring 3 be fixedly connected with online, bottom and interior telescopic 6 fit mutually, described interior telescopic 6 lower end is fixedly connected with lower connecting ring 4, when the live body joint flexing of human hip, flexible by external extension cover 5 and interior telescopic 6, repeatedly tortuous with the resisting fatigue improved in the curvature movement repeatedly in the live body joint of human body trans-articular, avoid occurring tinsel flex fatigue fracture repeatedly.
The present invention also can be provided with obtuse ring 10 with the end of the link of interior telescopic 6 by described external extension cover 5, described obtuse ring 10 is bullet, described obtuse ring 10 outer wall one end and external extension overlap 5 end winding support and are connected and are also close to axle center circular arc mistake gradually downwards vertically, be beneficial to avoid when the live body joint flexing of trans-articular, the sharp property end avoiding external extension to overlap 5 scratches the IA blood vessel wall of live body, and causes vascellum endometrial hyperplasia.
Universal linking retractor device of the present invention can also be arranged along the circle spacing array of upper connecting ring 3 and lower connecting ring 4, described universal linking retractor device is made up of telescopic 7 and expansion link 8, described telescopic 7 upper end is fixedly connected with upper connecting ring 3, bottom is flexibly connected with expansion link 8, described expansion link 8 lower end is fixedly connected with lower connecting ring 4, when the live body joint flexing of human hip, by upper connecting ring 3 and the telescopic 7 of lower connecting ring 4 circumference and stretching or contracting of expansion link 8, repeatedly tortuous with the resisting fatigue improved in the curvature movement repeatedly in the live body joint of human body trans-articular, avoid occurring tinsel flex fatigue fracture repeatedly.
The present invention also can be provided with obtuse ring 10 at described telescopic 7 with the link end of expansion link 8, described obtuse ring 10 is bullet, described obtuse ring 10 outer wall has telescopic 7 outer wall to be also close to axle center circular arc mistake gradually downwards vertically, be beneficial to avoid when the live body joint flexing of trans-articular, avoid the sharp property end of telescopic 7 to scratch the IA blood vessel wall of live body, and cause vascellum endometrial hyperplasia.
The present invention can be provided with passage in described telescopic medial wall, centrage and the telescopic axes intersect of described passage are pitched, and the corresponding blood flow direction of its angle, be beneficial to the quick sliding ensureing telescopic and expansion link, avoid producing negative pressure impact to use, meanwhile, in motor process, also reach the effect impacted the blood in support, the row avoiding clot is formed.
The material of universal linking retractor device of the present invention preferably adopts expanded PTFE to make, effectively platelet aggregation is prevented to reach, the formation of the pre-preventing thrombosis of its hydrophobic performance simultaneously, in the curvature movement repeatedly in live body joint, the fatigue strength of the folding strength maximum point of the outstanding trans-articular activity that improves gesture, reaches the effect of the secondary injury that increases the service life, avoids.
Upper connecting ring 3 of the present invention and lower connecting ring 4 are circumferentially crowded around by adjacent stator 12 and flexible mesh sheet 13 to form respectively, described stator 12 is in outwards recessed arcwall face, periphery is mellow and full, described upper connecting ring 3 is fixedly connected with telescopic 7 through stator 12, described lower connecting ring 3 border stator 12 is fixedly connected with expansion link 8, be beneficial to by the flexible of flexible mesh sheet 13 and make upper connecting ring 3 and the reduced of lower connecting ring 4 when importing blood vessel, avoiding blood vessel wall to cause secondary injury.
The present invention also can compile brace sections 2 lower end at described net and be provided with second universal linking retractor device 14, and described second universal linking retractor device 14 lower end is fixedly connected with off line volume brace sections 15, is beneficial to the scope expanding anti-warpage further.
After the lesion vessels of clinical for the present invention injection human body trans-articular, online is compiled brace sections 1 and is positioned at above the live body joint of trans-articular, described net is compiled brace sections 2 and is positioned at below the live body joint of trans-articular, universal linking retractor device is positioned at described live body joint part, after the present invention is injected into, upper connecting ring and lower connecting ring are softened under brace sections is compiled in online and the drive of brace sections compiled by net, universal linking retractor device struts along trans-articular position under the effect of upper connecting ring and lower connecting ring, when the live body joint extension of trans-articular, the telescopic 7 of upper connecting ring 3 and lower connecting ring 4 circumference and expansion link 8 vertically concentric stretch, when live body joint flexing, telescopic 7 and expansion link 8 are simultaneously bending and relatively stretch or indentation, the space surrounded by telescopic 7 and expansion link 8 is expanded, strengthening repeatedly tortuous intensity, while improve the support strength at lesion vessels position, also assures that the normal operation of blood in trans-articular diseased region blood vessel.
The present invention is owing to adopting said structure, advantages such as having novel structure, operation wound is little, operating time is short, simple to operate, resisting fatigue is bent and stretched.
Claims (10)
1. one kind is connected the trans-articular intravascular stent of pattern with movable joint, comprise online and compile brace sections and net volume brace sections, it is characterized in that being provided with universal linking retractor device, upper connecting ring and lower connecting ring, described upper connecting ring is fixed on online and compiles brace sections end, described lower connecting ring is fixed on described net and compiles brace sections end, and described online volume brace sections is compiled brace sections through universal linking retractor device with net and is fixedly connected with.
2. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 1, it is characterized in that described universal linking retractor device is overlapped by external extension and interior telescopic forms, described external extension set upper side is compiled support through upper connecting ring with online and is fixedly connected with, bottom and the mutual fit of interior telescopic, described interior telescopic lower end is fixedly connected with lower connecting ring.
3. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 2, it is characterized in that described external extension cover is provided with obtuse ring with the end of the link of interior telescopic, described obtuse ring is bullet, and described obtuse ring outer wall one end is connected with telescopic end winding support and is also close to axle center arc transition gradually downwards vertically.
4. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 1, it is characterized in that described universal linking retractor device is arranged along the circle spacing array of upper connecting ring and lower connecting ring, described universal linking retractor device is made up of telescopic and expansion link, described telescopic upper end is fixedly connected with upper connecting ring, bottom is flexibly connected with expansion link, and described expansion link lower end is fixedly connected with lower connecting ring.
5. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 4, it is characterized in that the link end of described telescopic and expansion link is provided with obtuse ring, described obtuse ring is bullet, and described obtuse ring outer wall has telescopic outer wall to be also close to axle center arc transition gradually downwards vertically.
6. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 4, it is characterized in that the present invention can be provided with passage in described telescopic medial wall, centrage and the telescopic axes intersect of described passage are pitched, and the corresponding blood flow direction of its angle.
7. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 2 or 4, is characterized in that the material of described universal linking retractor device adopts medical macromolecular materials to make.
8. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 6, is characterized in that described medical macromolecular materials are expanded PTFE.
9. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 2 or 4, it is characterized in that described upper connecting ring and lower connecting ring are circumferentially crowded around by adjacent stator and flexible mesh sheet to form respectively, described stator is in outwards recessed arcwall face, periphery is mellow and full, described upper JA(junction ambient) stator is fixedly connected with telescopic, and described lower JA(junction ambient) stator is fixedly connected with expansion link.
10. a kind of trans-articular intravascular stent being connected pattern with movable joint according to claim 2 or 4, it is characterized in that described net is compiled brace sections lower end and is provided with second universal linking retractor device, described second universal linking retractor device lower end is fixedly connected with off line volume brace sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510774757.0A CN105193530B (en) | 2015-11-13 | 2015-11-13 | It is connected the trans-articular intravascular stent of pattern with turning joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510774757.0A CN105193530B (en) | 2015-11-13 | 2015-11-13 | It is connected the trans-articular intravascular stent of pattern with turning joint |
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| Publication Number | Publication Date |
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| CN105193530A true CN105193530A (en) | 2015-12-30 |
| CN105193530B CN105193530B (en) | 2017-10-13 |
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| CN201510774757.0A Active CN105193530B (en) | 2015-11-13 | 2015-11-13 | It is connected the trans-articular intravascular stent of pattern with turning joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691644A (en) * | 2017-01-12 | 2017-05-24 | 吉林大学 | Colorectum support with thermotherapy function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868783A (en) * | 1997-04-16 | 1999-02-09 | Numed, Inc. | Intravascular stent with limited axial shrinkage |
| CN1301139A (en) * | 1998-03-04 | 2001-06-27 | 恩朵罗杰克斯股份有限公司 | Endoluminal vascular prosthesis |
| US20130178926A1 (en) * | 2011-02-23 | 2013-07-11 | Andy Edward Denison | Stent Having At Least One Connecting Member Configured to Controllably Sever In Vivo |
| US20140364935A1 (en) * | 2013-06-05 | 2014-12-11 | Abbott Cardiovascular Systems Inc. | Coupled scaffold segments |
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2015
- 2015-11-13 CN CN201510774757.0A patent/CN105193530B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5868783A (en) * | 1997-04-16 | 1999-02-09 | Numed, Inc. | Intravascular stent with limited axial shrinkage |
| CN1301139A (en) * | 1998-03-04 | 2001-06-27 | 恩朵罗杰克斯股份有限公司 | Endoluminal vascular prosthesis |
| US20130178926A1 (en) * | 2011-02-23 | 2013-07-11 | Andy Edward Denison | Stent Having At Least One Connecting Member Configured to Controllably Sever In Vivo |
| US20140364935A1 (en) * | 2013-06-05 | 2014-12-11 | Abbott Cardiovascular Systems Inc. | Coupled scaffold segments |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691644A (en) * | 2017-01-12 | 2017-05-24 | 吉林大学 | Colorectum support with thermotherapy function |
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| CN105193530B (en) | 2017-10-13 |
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