CN201744060U - Step-type artery balloon expansion conduit - Google Patents
Step-type artery balloon expansion conduit Download PDFInfo
- Publication number
- CN201744060U CN201744060U CN2010202951013U CN201020295101U CN201744060U CN 201744060 U CN201744060 U CN 201744060U CN 2010202951013 U CN2010202951013 U CN 2010202951013U CN 201020295101 U CN201020295101 U CN 201020295101U CN 201744060 U CN201744060 U CN 201744060U
- Authority
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- China
- Prior art keywords
- sacculus
- balloon
- section
- flat section
- notch cuttype
- 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.)
- Expired - Fee Related
Links
- 210000001367 artery Anatomy 0.000 title abstract description 3
- 230000000916 dilatatory effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 10
- 210000004204 blood vessel Anatomy 0.000 abstract description 9
- 230000006378 damage Effects 0.000 abstract description 4
- 208000037803 restenosis Diseases 0.000 abstract description 3
- 230000002980 postoperative effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920002614 Polyether block amide Polymers 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000001631 vena cava inferior Anatomy 0.000 description 1
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Abstract
The utility model discloses a step-type artery balloon expansion conduit including a balloon, both ends of the balloon are in a multi-step type structure, the multi-step type structure consists of a plurality of flat sections and conical sections; the outer diameter of the flat sections extends from the middle part of the balloon to the both ends of the balloon in a declined tendency; the transitional section connected between the flat sections and the colonial sections is in the shape of a circular arc. The step-type balloon prevents the damage of blood vessel from excessive expansion at the both ends of the support and reduces the possibility of restenosis of postoperative blood vessel while the balloon expands; in addition, the crossing performance of the balloon conduit is improved by the step-type design and the circular arc connection between the sections of the balloon.
Description
Technical field
This utility model belongs to a kind of medical device city, relates to a kind of sacculus dilating catheter of puncture shaping surgery treatment obstruction of artery; Specifically relate to a kind of sacculus dilating catheter that adopts the notch cuttype balloons technique.
Background technology
Get involved in the blood vessel or Wicresoft to hinder treatment technology be the novel medical skill of the usefulness internal medicine method lieu of surgery that grows up of the eighties in the world.It is under the guiding of medical imaging device that treatment technology is hindered by interior intervention of blood vessel or Wicresoft, utilizes the Clinics and Practices that apparatus carried out operations such as puncture needle, seal wire and conduit.The sacculus dilating catheter of Shi Yonging is because the cause of sacculus structure itself a few days ago, cause in the practical application still to come with some shortcomings, because sacculus is an awl two flat segment structures, promptly middle is one flat section furtherly, two ends are symmetrical arranged an awl section, and awl section two ends then are symmetrical arranged a straight linkage section; (as shown in Figure 1), can produce " dog bone " phenomenon when sacculus dilating catheter blood vessel dilating support, promptly the support two ends are at first opened by expansion, and middle then the expansion again opens, and interlude presents certain matrix.Can cause blood vessel injury because of support two ends overdistension like this, and then cause the bracket end vascular restenosis.For this reason, the purpose of this utility model produces " dog bone " phenomenon by improving when balloon structure is improved the inferior vena cava balloon dilation intravascular stent, and then reduces the damage of support two ends to blood vessel.
Summary of the invention
Goal of the invention:, the invention provides a kind of sacculus dilating catheter that adopts the notch cuttype balloons technique in order to solve the deficiencies in the prior art.
Technical scheme: in order to realize above purpose, a kind of notch cuttype aortic sac dilating catheter described in the utility model comprises sacculus, and described sacculus two ends are multi-step type structure, and described multi-step type structure is made of a plurality of flat section and awl sections; The overall diameter of flat section extends the trend that tapers off from the sacculus middle part to two ends; Flat section is a circular arc with the changeover portion that is connected of boring between the section; Arc chord angle between flat section and the awl section can be designed to equal angular and also can be designed to different angles.
The diameter maximum of sacculus described in the present invention is 1.5mm～12mm; Described sacculus middle part adopts identical or different material to constitute with two ends.
As priority scheme of the present invention: in this notch cuttype sacculus dilating catheter, described sacculus two ends become three notch cuttypes; Constitute by three flat sections and three awl sections; And it is also spaced apart to symmetry along balloon shaft with the awl section to equal section; The concrete structure of sacculus is as follows: the centre is the sacculus middle part; Is respectively the first awl section, first flat section, the second awl section, second flat section, third hand tap section, the 3rd flat section by sacculus middle part to two ends; The diameter at sacculus middle part is less than first flat section; Second flat section diameter is less than first flat section diameter; The 3rd flat section diameter is less than second flat section diameter; Flat section and the intersegmental transition of awl are connected to circular arc.
Related content and variation further are explained as follows in the above-mentioned optimal technical scheme:
1, in the above-mentioned preferred version, the first awl segment length is 0.1～5mm, is preferably 0.2～3mm, and tapering is 10～90 degree, is preferably 35～40 degree.It is 1～15% that the diameter at first flat section diameter and sacculus middle part differs, and is preferably 5～10%, and this segment length is 0.5～10mm, is preferably 1～5mm.The second awl segment length is 0.1～5mm, is preferably 0.2～3mm, and tapering is 10～90 degree, is preferably 35～40 degree.It is 1～15% that second flat section diameter and first flat section diameter differ, and is preferably 5～10%, and this segment length is 0.5～10mm, is preferably 1～5mm.The third hand tap segment length is 0.1～8mm, is preferably 0.5～5mm, and tapering is 10～90 degree, is preferably 30～45 degree.The footpath of the 3rd flat section one end matches with interior external diameter of pipe, and the diameter of the 3rd flat section other end and far ultraviolet pipe match.
The given angle of above tapering is the drift angle of cone, and diameter refers to the diameter behind the balloon expandable.
2, in the such scheme, desirable more for the effect that makes balloon expandable, sacculus is designed to different wall thickness, wherein, the wall thickness 1～20% of other flat section of first flat section wall ratio is preferably 5～10%.
3, in the such scheme, the diameter of the sacculus middle part straight section after the ball expansion is 1.5～12mm.
4, in the such scheme, first flat section material section with the employing of sacculus remainder of described notch cuttype sacculus may be identical, also may be different.In the preparatory stage of sacculus molding, the molding sacculus tubing of certain size is drawn into as shown in Figure 2 shape in advance, in corresponding mould, be processed into shape shown in Figure 3 then.
5, in the such scheme, embedding or be with two rings that develop on the interior pipe in the described sacculus as the development point, the position of the point that develops is between first and third hand tap section of notch cuttype ball, and the effective length of two length of developing between the point after expanding with the ball element is suitable.
6, in the such scheme, pipe is polymer composite in described, this polymer composite adopts the compound mode of extruding to make, be that nylon material is that outer wall and polythene material are inwall, or the PEBAX material is that outer wall and polythene material are inwall, thereby reduces the frictional force between inwall and guide wire.
7, in the such scheme, the transition between each flat section and the awl section is connected to circular arc, thereby has reduced the resistance when sacculus is walked in blood vessel, has improved the passing through property of foley's tube.
Beneficial effect: its sacculus of this utility model adopts stepped design, has avoided support two ends overdistension and the blood vessel injury that causes when balloon expandable, has reduced the probability of the vascular restenosis of postoperative.In addition, adopt each intersegmental circular arc of stepped project organization and sacculus to connect the performance of passing through that can improve foley's tube.
Description of drawings
Accompanying drawing 1 is two flat sections sacculus sketch maps of an existing awl;
Accompanying drawing 2 is a ready-made shape before the molding of notch cuttype sacculus;
Accompanying drawing 3 is a notch cuttype sacculus sketch map;
Accompanying drawing 4 is the structural representation of notch cuttype aortic sac dilating catheter.
The specific embodiment:
Below in conjunction with specific embodiment, further illustrate this utility model, should understand these embodiment only be used to this utility model is described and be not used in the restriction scope of the present utility model, after having read this utility model, those skilled in the art all fall within the application's claims to the modification of the various equivalent form of values of the present utility model and limit.
A kind of notch cuttype aortic sac dilating catheter as shown in Figure 4 comprises: manage 2, far ultraviolet pipes 3, intermediate connection tube 5, a near-end metal tube 6 (the near-end metal tube has trocar sheath or has the PTFE coating), a connector 7 in the notch cuttype sacculus 1, one.Sacculus far-end 9 is connected with interior pipe 2 outer rims, and in the formation sealing of sacculus far-end 9 places, balloon proximal 8 is connected with far ultraviolet pipe 3 outer rims, far ultraviolet pipe 3 is a single lumen catheter, interior pipe 2, far ultraviolet pipe 3 and intermediate connection tube 5 adopt special company to form seal wire mouth 4 by mode, guiding wire penetrates from the inner chamber 10 of balloon tip, passes from seal wire mouth 4.The seal wire mouth moulding of described uniqueness is that interior pipe 2 adopts mode as shown in Figure 1 to be connected to form with intermediate connection tube 5 and far ultraviolet pipe 3.Intermediate connection tube 5 is connected (or directly being connected with near-end metal tube trocar sheath) with near-end metal tube 6.Near-end metal tube 6 (or near-end metal tube and trocar sheath thereof) is connected with connector 7.Passage between described connector 7 and proximal tube 6, interior pipe 2 and the far ultraviolet pipe 3 constitutes the topping up/tapping passage of a sacculus 1.When needs are given sacculus 1 pressurization, the liquid of pressurization directly can be passed through connector 7, send into the inner chamber of proximal tube 6 and the cavity between far ultraviolet pipe 3 and the interior pipe 2, arrive sacculus 1, thereby finish the process of expansion of sacculus 1.Adopt hot adhesion with interior pipe 2 and far ultraviolet pipe 3 respectively at sacculus far-end 9 and balloon proximal 8 places.Diameter after described sacculus 1 expansion is controlled at 1.5～12mm, and the fracture pressure of such sacculus can surpass 20 atmospheric pressure.Intermediate connection tube 5 materials are nylon.Far ultraviolet pipe 3 materials are PEBAX.The metal material of proximal tube 6 adopts stainless steel material to make, can outside stainless steel tube, be with plastic tube or apply one deck PTFE coating, increase aesthetic appearance of the present utility model, one end of this metal tube is the gradient groove or welds the stainless steel silk of a band gradient that the length of this slope mouth or stainless steel silk is 50～300mm.In pipe 2 make by PEBAX, the inwall of interior pipe 2 scribbles the layer of polyethylene coating, can reduce greatly from the frictional force between inner catheter vias inner walls and guide wire.In order in operation, to develop, embedding (cover) has two rings that develop as the point 11 that develops on the interior pipe 2 of sacculus 1, develop the position of point 11 between the first awl section 13 of notch cuttype sacculus 1 and third hand tap section 17, and the length between it develops is suitable with the effective length behind the balloon expandable.
As shown in Figure 3, this notch cuttype sacculus comprises four sections flat sections and three sections awl sections: flat section is sacculus middle part 12 in the middle of the sacculus; 12 two ends, sacculus middle part are symmetrical arranged the first awl section 13, and this awl segment length is 0.2～3mm, and tapering is to be connected for circular arc between 35～40 degree sacculus middle parts 12 and first bore sections 13; The first awl section, 13 two ends then are symmetrical arranged first flat section 15, and it is 5～10% that the diameter at this section diameter and sacculus middle part 12 differs, and length is 1～5mm.First flat section 15 two ends then are symmetrical arranged the second awl section 14, and this segment length is 0.2～3mm, and tapering is 35～40 degree; Bore between the section 14 for first flat section 15 and second and be connected for circular arc.The second awl section is kicked for 14 liang and then is symmetrical arranged second flat section 16, and it is 5～10% that this section diameter and first flat section diameter differ, and length is 1～5mm.Second flat section 16 two ends then are symmetrical arranged third hand tap section 17, and this segment length is 0.5～5mm, and tapering is 30～45 degree; Second flat section with the third hand tap section between be connected for circular arc.This awl section two is kicked the end internal diameter and interior pipe 2 external diameters that then are symmetrical arranged the 3rd flat section 18, the three flat sections 18 and is matched, and other end internal diameter and far ultraviolet pipe 3 match; The circular arc radian is 145 °～140 ° in equalling section and the circular arc of boring changeover portion between the section being connected.
Claims (6)
1. a notch cuttype aortic sac dilating catheter comprises sacculus, it is characterized in that: described sacculus two ends are multi-step type structure, and described multi-step type structure is made of a plurality of flat section and awl sections.
2. notch cuttype aortic sac dilating catheter according to claim 1 is characterized in that: described flat section overall diameter extends the trend that tapers off from the sacculus middle part to two ends.
3. notch cuttype aortic sac dilating catheter according to claim 2 is characterized in that: described flat section is circular arc with the changeover portion that is connected of boring between the section.
4. notch cuttype aortic sac dilating catheter according to claim 3 is characterized in that: the arc chord angle between described flat section and the awl section is identical or different.
5. the crown aortic sac dilating catheter of notch cuttype tremulous pulse according to claim 2 is characterized in that: the diameter maximum of described sacculus is 1.5mm～12mm.
6. according to the crown aortic sac dilating catheter of the described notch cuttype tremulous pulse of arbitrary claim among the claim 1-5, it is characterized in that: described sacculus middle part adopts identical or different material to constitute with two ends multi-step type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202951013U CN201744060U (en) | 2010-08-17 | 2010-08-17 | Step-type artery balloon expansion conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202951013U CN201744060U (en) | 2010-08-17 | 2010-08-17 | Step-type artery balloon expansion conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201744060U true CN201744060U (en) | 2011-02-16 |
Family
ID=43578734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202951013U Expired - Fee Related CN201744060U (en) | 2010-08-17 | 2010-08-17 | Step-type artery balloon expansion conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201744060U (en) |
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| CN103055411A (en) * | 2013-01-25 | 2013-04-24 | 业聚医疗器械(深圳)有限公司 | Balloon catheter and manufacturing method thereof |
| CN104244816A (en) * | 2011-11-22 | 2014-12-24 | 阿森松技术公司 | Tracking a guidewire |
| CN105246537A (en) * | 2013-03-15 | 2016-01-13 | 雅培心血管系统有限公司 | Length adjustable balloon catheter for multiple indications |
| CN105662668A (en) * | 2016-01-14 | 2016-06-15 | 江苏大学 | Conical balloon |
| CN106137485A (en) * | 2015-04-02 | 2016-11-23 | 上海微创医疗器械（集团）有限公司 | Sacculus and stent delivery system |
| CN107661564A (en) * | 2016-07-29 | 2018-02-06 | 孙英贤 | A kind of foley's tube with the asymmetric sacculus in both ends |
| CN108025162A (en) * | 2015-07-29 | 2018-05-11 | 宾利-英诺美特有限公司 | Foley's tube |
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| US11523919B2 (en) | 2011-01-14 | 2022-12-13 | W. L. Gore & Associates, Inc. | Stent |
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