CN104352288A - Covered stent used in chest great vessel cavity - Google Patents
Covered stent used in chest great vessel cavity Download PDFInfo
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- CN104352288A CN104352288A CN201410593999.5A CN201410593999A CN104352288A CN 104352288 A CN104352288 A CN 104352288A CN 201410593999 A CN201410593999 A CN 201410593999A CN 104352288 A CN104352288 A CN 104352288A
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- tube
- straight tube
- pleated
- blood vessel
- overlay film
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Abstract
The invention relates to a covered stent used in a chest great vessel cavity. Compared with the prior art, the defects that a covered stent is incapable of overcoming straightening force and is poor in practicability are overcome. The covered stent comprises artificial blood vessels (1) and support frames (2), wherein each artificial blood vessel (1) comprises a plurality of straight pipes and a plurality of pleated pipes; the straight pipes are connected at intervals through the pleated pipes; the support frames (2) are wrapped on each straight pipe respectively; the straight pipes are arranged at the two ends of each artificial blood vessel (1) respectively. The covered stent has certain longitudinal stretching deformation capacity, can fit the physiological bending of an aorta, and eliminates the straightening force after a traditional stent is bent, so that the blood vessel wall of the aorta is uniformly stressed.
Description
Technical field
The present invention relates to overlay film frame technical field, specifically a kind of overlay film frame for chest trunk intracavity.
Background technology
Traditional trunk intracavity stent is outside very thin and smooth Teflon artificial blood vessel, make the tinsel supported, and support can compress, but does not have longitudinal stretching ability.The aorta of people can produce horizontal and vertical elastic deformation when heart contraction and diastole, form vascular pulsation, and support in blood-vessel can only produce compression, i.e. transverse deformation, and substantially without longitudinal deformation ability.Once trunk intracavity stent front end target fixed after, due to active tremulous pulse and trunk intracavity stent inconsistent in longitudinal deformation ability, when heart contraction and diastole, rack far end is caused slightly to vertically move at aorta inwall, damage aorta inwall, seriously can form aortic aneurysm in mount proximal end or far-end.(be recorded in " Chinese interventional radiology " 2008,2; The standardized operation of the interventional treatment in aortic dissection that 26-29, Fan Zhanming, Wang Jue, Li Yu, Zhang Zhaoqi show and Problems existing).
Now widely used thoracic aorta trunk overlay film frame is straight type support, does not have longitudinal stretching deformability, easily forms bending place support on the one hand and subside after its bending; On the other hand, because support is overlay film frame, blood pressure (under normal circumstances in aorta systolic blood pressure more than 140mmHg, >18.67KPa) after it inserts thoracic aorta, to be born.Straight type overlay film frame has the elasticity strength of replying straight type structure, and make fulcrum with support mid portion, its two ends exist restoring force, must produce local stress to aorta wall, and long term can cause mount proximal end or the neoplasia of active distal arteries and veins equally.The support reported clinically now insert artery neoplasia position also just aorta wall bear the position of stent returns power.
Though there are some technology to propose some new schemes for overlay film frame, all come with some shortcomings and defect.Such as, the patent No. is 200410053816, patent name is combination type membrane-covered stent capable of being bent in any direction, it adopts holder combination to design, by combining of multiple scaffold units fish scale pattern, but this mode rack making is extremely complicated, and in use once high pressure blood flow is by overlay film frame, this design still cannot eliminate restoring force;
For another example, the patent No. is 201210191537.1, name is called a kind of Prebending type aorta tectorial membrane stent and preparation method thereof, it on the make just adopts the design of prebending, but the chest trunk size of human body, camber are all not identical, particularly dissection of aorta or aneurysm patient, its diseased region is positioned at descending aorta near-end, aorta has a nearly 90o to turn in this position, but its turning number of degrees of the aorta of Different Individual are all not identical, and trunk overlay film frame needs with blood vessel adherent after implanting, also form a nearly 90o and turn.The design of pre-bending cannot ensure can be applicable to each patient completely, even if the used time cannot ensure that overlay film frame can be adherent with blood vessel after implanting, there is the problem that support cannot accurately put in place in operation process especially;
For another example, the patent No. is 201110303760.6, and name is called a kind of overlay film frame, and it cushions back normal stress by bare bracket, but in the joint portion of overlay film frame and bare bracket, still there is Hui Zhili, the problem of Hui Zhili is eliminated not yet.
How to develop simple, applied widely, that Hui Zhili can be overcome the completely overlay film frame of a kind of structure and become the technical problem being badly in need of solving.
Summary of the invention
The object of the invention is cannot overcome the defect of Hui Zhili, poor practicability to solve overlay film frame in prior art, providing a kind of overlay film frame for chest trunk intracavity to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of overlay film frame for chest trunk intracavity, comprise artificial blood vessel and bracing frame, described artificial blood vessel comprises several straight tubes and several pleated tubes, and straight tube is connected by pleated tube interval, wherein straight tube is all coated with bracing frame, the two ends of artificial blood vessel are straight tube.
Artificial blood vessel comprises the straight tube A, pleated tube A, straight tube B, pleated tube B and the straight tube C that are connected successively, and straight tube A is positioned at overlay film frame near-end, straight tube C is positioned at overlay film frame far-end, and straight tube A, straight tube B and straight tube C are all coated with bracing frame.
Also comprise the pleated tube C, straight tube D, pleated tube D and the straight tube E that are connected successively, pleated tube C is connected on straight tube C, and straight tube D and straight tube E is all coated with bracing frame.
The corrugation density of described pleated tube B is greater than pleated tube A, and the corrugation density of pleated tube A is greater than pleated tube C, and the corrugation density of pleated tube C is greater than pleated tube D.
Described bracing frame is the tinsel of undulate, and the material of bracing frame is memorial alloy.
Described bracing frame is sewed up or is bonded on straight tube A, straight tube B and straight tube C.
Described artificial blood vessel is pleated structure, artificial blood vessel is sewed up or bonding bracing frame.
beneficial effect
A kind of overlay film frame for chest trunk intracavity of the present invention, compared with prior art has certain longitudinal stretching deformability, aortal physiological bending of fitting, and eliminates conventional stent Hui Zhili upon bending, makes aortic blood tube wall uniform stressed.By the design of bellows, local anomaly stress can not be produced to aortic blood tube wall, insert not injured blood vessel wall for a long time, support can be prevented to insert artery neoplasia.Owing to eliminating support Hui Zhili upon bending, self there is not side ABNORMAL STRESS after inserting in support, stent expansion is more natural, more abundant, can better docile aortic blood tube wall, preclude blood along between support and aorta wall to blood vessel cut reflux, reduce support internal hemorrhage due to trauma.Because support has longitudinal extension ability, the physiology deformation of aorta when heart contraction and diastole of can better fitting, can not cause the slight displacement of backbone metal structure, not produce larger impact to the aorta wall of stented area.
accompanying drawing explanation
Fig. 1 is structural perspective of the present invention;
Fig. 2 is the structural perspective of artificial blood vessel of the present invention;
Fig. 3 is the structural perspective of artificial blood vessel in another embodiment of the present invention;
Fig. 4 is the structural perspective of another embodiment of the present invention;
Fig. 5 is the axonometric chart that the present invention uses in dissection of aorta;
Wherein, 1-artificial blood vessel, 2-bracing frame, 3-dissection of aorta, 11-straight tube A, 12-pleated tube A, 13-straight tube B, 14-pleated tube B, 15-straight tube C, 16-pleated tube C, 17-straight tube D, 18-pleated tube D, 19-straight tube E.
Detailed description of the invention
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As shown in Figure 1, a kind of overlay film frame for chest trunk intracavity of the present invention, comprises artificial blood vessel 1 and bracing frame 2, bracing frame 2 is prior art content, be the parts that artificial blood vessel is supported, make outside artificial blood vessel 1, combine formation overlay film frame.As shown in Figure 2, artificial blood vessel 1 comprises several straight tubes and several pleated tubes, and straight tube is connected by pleated tube interval, namely forms the structure of straight tube, pleated tube, straight tube, pleated tube.Wherein straight tube is all coated with bracing frame 2, the two ends of artificial blood vessel 1 are straight tube.Artificial blood vessel 1 comprises the straight tube A11, pleated tube A12, straight tube B13, pleated tube B14 and the straight tube C15 that are connected successively, straight tube A11, pleated tube A12, straight tube B13, all communicates between pleated tube B14 and straight tube C15.Straight tube A11, straight tube B13, straight tube C15 are the artificial blood vessel pipeline of common smooth in appearance; Pleated tube A12 and pleated tube B14 is the artificial blood vessel pipeline with pleated structure, and pleated structure can realize compression, the stretching of pleated tube A12 and pleated tube B14, namely in use while realizing transversely deforming, can also realize linear deformation.Straight tube A11, straight tube B13 and straight tube C15 are all coated with bracing frame, namely by bracing frame fixing on straight tube A11, straight tube B13 and straight tube C15, form overlay film frame on the whole.
Artificial blood vessel is designed to the order of straight tube A11, pleated tube A12, straight tube B13, pleated tube B14 and straight tube C15, to be engaged in the design of overlay film frame in dissection of aorta 3, as shown in Figure 5, straight tube A11 is positioned at overlay film frame near-end, straight tube C15 is positioned at overlay film frame far-end, namely straight tube A11 is positioned at the initiating terminal of overlay film frame, and straight tube C15 is positioned at the end of overlay film frame.Straight tube A11 and pleated tube A12 is referred to as first paragraph artificial blood vessel, is positioned at support the initial segment, for the near-end of dissection of aorta 3; Straight tube B13 and pleated tube B14 is referred to as second segment artificial blood vessel, is positioned at the nearly stage casing of support, for the bow portion of dissection of aorta 3; Straight tube C15 is then the 3rd section of artificial blood vessel, and be arranged in support section far away, the bottom for dissection of aorta 3 extends.Bottom due to dissection of aorta 3 extends does not have large-scale angle to bend, approximate position straight section, and the longitudinal stretching ability of this section is only 20% of whole overlay film frame, therefore can adopt common straight tube design.Certainly in order to better docile aortic blood tube wall, 3rd section of artificial blood vessel can also comprise the pleated tube C16, straight tube D17, pleated tube D18 and the straight tube E19 that are connected successively, namely straight tube C15 connects pleated tube C16, then connect straight tube D17, pleated tube D18 and straight tube E19 successively.Same, straight tube D17 and straight tube E19 are all coated with bracing frame 2, for forming overlay film frame on the whole.By the design of pleated tube C16, straight tube D17, pleated tube D18 and straight tube E19, the better docile of overlay film frame can be made to extend in the bottom of dissection of aorta 3.
The nearly stage casing of overlay film frame, i.e. second segment artificial blood vessel.Due to bending of dissection of aorta 3 of will fitting after stent inserting, the longitudinal direction of this section of overlay film frame extends larger, the band gauffer of artificial blood vessel design becomes intensive gradually, make the longitudinal stretching length of this section of support close to stent diameter (at about 2.5 ~ 3cm), therefore the corrugation density of pleated tube B14 is greater than pleated tube A12.And first paragraph artificial blood vessel place, lower to support longitudinal stretching Capability Requirement, artificial blood vessel 1 design band gauffer gradually thinning, shoal, therefore the corrugation density of pleated tube A12 is greater than pleated tube C16.The 3rd section of artificial blood vessel, namely the bottom of dissection of aorta 3 extends, and approximate Vasa recta section, lower to support longitudinal stretching Capability Requirement, longitudinal stretching length is at about 1 ~ 1.5cm, and therefore the corrugation density of pleated tube C16 is greater than pleated tube D18.Certainly in second segment artificial blood vessel, only devise a pleated tube, because second segment artificial blood vessel is positioned at bracket bent portion, this section of longitudinal stretching ability is 70% of the straight strength of whole artificial blood vessel, make this section of support bend about 70 degree, therefore, multiple straight tube and pleated tube design can also be coordinated, the i.e. design of straight tube-pleated tube-straight tube-pleated tube-straight tube, can realize the bending of wide-angle better.
Bracing frame 2 uses structural design of the prior art, directly sews up or is bonded on straight tube A11, straight tube B13 and straight tube C15, play a supporting role.Certainly, can directly sew up or be bonded on straight tube D17 and straight tube E19.Bracing frame 2 preferably can use the tinsel of conventional undulate, and the material of bracing frame 2 is memorial alloy, can also ensure the effect of life-time service like this while reducing costs.As another embodiment of the invention, in order to the scope of application is wider, be better applied to trunk intracavity, as shown in Figure 3, artificial blood vessel 1 is pleated structure, is the design of pleated tube on the whole.As shown in Figure 4, artificial blood vessel 1 is sewed up or bonding bracing frame 2, be combined into overlay film frame.Can realize bending optionally, easily in whole overlay film frame, so not only can be applied to dissection of aorta 3, other trunk intracavity can also be applied to better.
During actual use, overlay film frame is arranged on trunk intracavity, by the pleated tube design on overlay film frame, well forms the longitudinal stretching of overlay film frame.As shown in Figure 5, be specially adapted to dissection of aorta 3, after overlay film frame is implanted, straight tube A11 and pleated tube A12 is positioned at the near-end of dissection of aorta, and straight tube B13 and pleated tube B14 is positioned at the bow portion of dissection of aorta 3, and straight tube C15 is positioned at the straight sections of dissection of aorta 3, good docile is in blood vessel wall, and for the nuance between different dissection of aorta 3, also can reach self-adjusting object, thus ensure that overlay film frame can be adherent with blood vessel after implanting.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and description; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain of application claims is defined by appending claims and equivalent thereof.
Claims (7)
1. the overlay film frame for chest trunk intracavity, comprise artificial blood vessel (1) and bracing frame (2), it is characterized in that: described artificial blood vessel (1) comprises several straight tubes and several pleated tubes, straight tube is connected by pleated tube interval, wherein straight tube is all coated with bracing frame (2), the two ends of artificial blood vessel (1) are straight tube.
2. a kind of overlay film frame for chest trunk intracavity according to claim 1, it is characterized in that: artificial blood vessel (1) comprise successively be connected straight tube A(11), pleated tube A(12), straight tube B(13), pleated tube B(14) and straight tube C(15), straight tube A(11) be positioned at overlay film frame near-end, straight tube C(15) be positioned at overlay film frame far-end, straight tube A(11), straight tube B(13) and straight tube C(15) on be all coated with bracing frame (2).
3. a kind of overlay film frame for chest trunk intracavity according to claim 1, it is characterized in that: also comprise successively be connected pleated tube C(16), straight tube D(17), pleated tube D(18) and straight tube E(19), pleated tube C(16) be connected to straight tube C(15) on, straight tube D(17) and straight tube E(19) on be all coated with bracing frame (2).
4. a kind of overlay film frame for chest trunk intracavity according to claim 1, it is characterized in that: described pleated tube B(14) corrugation density be greater than pleated tube A(12), pleated tube A(12) corrugation density be greater than pleated tube C(16), pleated tube C(16) corrugation density be greater than pleated tube D(18).
5. a kind of overlay film frame for chest trunk intracavity according to Claims 2 or 3, is characterized in that: the tinsel that described bracing frame (2) is undulate, and the material of bracing frame (2) is memorial alloy.
6. a kind of overlay film frame for chest trunk intracavity according to claim 1, is characterized in that: straight tube A(11 is sewed up or be bonded in described bracing frame (2)), straight tube B(13) and straight tube C(15) on.
7. a kind of overlay film frame for chest trunk intracavity according to claim 1, is characterized in that: described artificial blood vessel (1) is pleated structure, and artificial blood vessel (1) is upper to be sewed up or bonding bracing frame (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593999.5A CN104352288A (en) | 2014-10-30 | 2014-10-30 | Covered stent used in chest great vessel cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593999.5A CN104352288A (en) | 2014-10-30 | 2014-10-30 | Covered stent used in chest great vessel cavity |
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| CN104352288A true CN104352288A (en) | 2015-02-18 |
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| CN201410593999.5A Pending CN104352288A (en) | 2014-10-30 | 2014-10-30 | Covered stent used in chest great vessel cavity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855522A (en) * | 2018-10-24 | 2019-06-07 | 广州库克科技有限公司 | A kind of displacement detection system and method for tunnel space deformation |
| CN110547896A (en) * | 2018-05-30 | 2019-12-10 | 杭州唯强医疗科技有限公司 | Blood vessel covered stent |
| CN113208789A (en) * | 2021-03-30 | 2021-08-06 | 北京航空航天大学 | Vascular stent graft |
| CN117204978A (en) * | 2023-09-28 | 2023-12-12 | 北京佰沃凯迪医学研究有限公司 | Tectorial membrane support |
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| CN201642417U (en) * | 2009-12-23 | 2010-11-24 | 孙立忠 | Artificial blood vessel coated stand combined body |
| CN102100587A (en) * | 2009-12-18 | 2011-06-22 | 微创医疗器械(上海)有限公司 | Blood vessel bracket prosthesis |
| CN202843681U (en) * | 2012-05-14 | 2013-04-03 | 上海微创医疗器械（集团）有限公司 | An intra-operative covered stent |
| CN204207879U (en) * | 2014-10-30 | 2015-03-18 | 章庆春 | A kind of overlay film frame for chest trunk intracavity |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0666066A1 (en) * | 1994-02-08 | 1995-08-09 | Ethicon, Inc. | Bi-directional crimped graft |
| CN102100587A (en) * | 2009-12-18 | 2011-06-22 | 微创医疗器械(上海)有限公司 | Blood vessel bracket prosthesis |
| CN201642417U (en) * | 2009-12-23 | 2010-11-24 | 孙立忠 | Artificial blood vessel coated stand combined body |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547896A (en) * | 2018-05-30 | 2019-12-10 | 杭州唯强医疗科技有限公司 | Blood vessel covered stent |
| CN109855522A (en) * | 2018-10-24 | 2019-06-07 | 广州库克科技有限公司 | A kind of displacement detection system and method for tunnel space deformation |
| CN109855522B (en) * | 2018-10-24 | 2020-12-01 | 广州库克测控科技有限公司 | Displacement detection system and method for tunnel space deformation |
| CN113208789A (en) * | 2021-03-30 | 2021-08-06 | 北京航空航天大学 | Vascular stent graft |
| CN113208789B (en) * | 2021-03-30 | 2022-01-21 | 北京航空航天大学 | Vascular stent graft |
| CN117204978A (en) * | 2023-09-28 | 2023-12-12 | 北京佰沃凯迪医学研究有限公司 | Tectorial membrane support |
| CN117204978B (en) * | 2023-09-28 | 2024-05-10 | 北京佰沃凯迪医学研究有限公司 | Tectorial membrane support |
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Application publication date: 20150218 |