CN100469338C - Arc and streamline type reticular cylinder stent for human lumen - Google Patents
Arc and streamline type reticular cylinder stent for human lumen Download PDFInfo
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- CN100469338C CN100469338C CNB2006100787347A CN200610078734A CN100469338C CN 100469338 C CN100469338 C CN 100469338C CN B2006100787347 A CNB2006100787347 A CN B2006100787347A CN 200610078734 A CN200610078734 A CN 200610078734A CN 100469338 C CN100469338 C CN 100469338C
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Abstract
The invention relates to an arch streamlining net cylinder support bracket for human lumen. It is characterized in that: every unit of beam column is designed into shape of peak-to-valley top of arch, the peak and valley are connected together by streamlining wave; the circumferential line vertical to axis is used as central line of wave curve, the same unit of beam column wave curve is the wave continuous closed line that alternated by peak and valley of main wave peak and secondary wave peak, the main and secondary wave peak takes paralleled with direct axis as wave amplitude, the number of wave peak in one side of central line is N=4+2a; the main wave peak and secondary wave peak with different wave amplitude are spaced arranged in each beam column expect port, each group of beam column are connected with main peak of bridge in S shape; the wave amplitude of wave peaks of the two groups of beam column in port are the same; the near main wave peaks are connected together through bridge in S shape, while the secondary wave peaks are not connected together through bridge. The invention is characterized by good radial anchorage force, small radial retraction rate, good flexibility, large side window, proper metal coverage and perfect fatigue durability.
Description
Affiliated field
The present invention relates to network, particularly arc and streamline type reticular cylinder stent for human lumen.The present invention is with innovative design on the basis of support in the tubular organ that existing clinical medicine uses, can be applicable to make all netted supports of implant into body tube chamber inner cylinder, as angiocarpy bracket, cerebrovascular support, peripheral blood vessel support, splenic artery support, esophagus urethra rack etc.
Background technology
Existing support worldwide has tens kinds of designs, characteristics emphasize particularly on different fields, general support is consecutively arranged to form by a plurality of repetitive patterns, figure mainly contains two parts and forms: the one, main radial support be the beam column that rounds, the 2nd, whether good the axial bridge muscle that connects beam column be pliability imbody position.In order to pursue radial support power and axial pliability good this contradictory entity simultaneously, there is design to go up substantially and adopts two kinds of macroscopical forms: the one, full encirclement; The 2nd, semi-surrounding; So-called full design of surrounding is meant that the curve crest of beam column does not have free end, and each crest all links to each other with the bridge muscle.Semi-surrounding is meant curve beam column crest, and half has free end, and half links to each other with the bridge muscle, and method of attachment is every one in a company, alternate connection.
Existing this two classes support is compared, and surround the support characteristics entirely and be: supportive is relatively good, and each beam column curve crest can be restrained, can not influence compliance because of crooked axially perk in course of conveying.But have important disadvantages simultaneously, promptly under identical beam column design, its bridge muscle constraint is two times of semi-surrounding.So pliability reduces a lot, support easily causes the support bending deformation by the bigger crooked pipeline of curvature the time.The shortcoming that also has another one to be difficult to overcome is exactly that sidewall hole maximum area is difficult to reach desirable maximum requirement, influences support and implants the shaping of rear side limb; And the characteristics of semi-surrounding support are: the supporting bridge muscle number of same design size than full minimizing of surrounding half, flexible, the pliability of support are relatively good, sidewall pore area easily design is bigger.Shortcoming is if the beam column design is axially longer, because the alternate freedom of the bent cutting edge of a knife or a sword of beam column may axial perk occur when the crooked propelling movement of support, causes the propelling movement obstacle.
Summary of the invention
The present invention seeks to provides a kind of arc and streamline type reticular cylinder stent for human lumen at the prior art defective.Main effect is the narrow positions of implanted expansion tube chamber, and adherent typing makes the through-current capacity of inner cavity of pipe recover normal, and then reaches the purpose of curing the sickness to save the patient at the inner surface of tube chamber after the plastic deformation.This kind support is a kind of long-term implant, generally adopts the interventional method of Wicresoft to carry out implant surgery.So this support should consider to produce the coupling problem on deformation of assembling and induction system in design, also to consider the problems such as trafficability characteristic, compliance, flexible in the patient Wicresoft course of conveying, will consider that more support is in be positioned radial support power problem after implanting of lesion.
Arc and streamline type reticular cylinder stent for human lumen, comprise the alternative wave curve of passive peak valley beam column and work the S type curved bridge muscle that is connected the beam column effect, it is characterized in that each group beam column is designed to connect peak, paddy with arch arc peak valley end shape by the streamline wave; With circumference perpendicular to axial direction is the peak, the alternative wave center of curve of paddy line, same group of beam column wave is to be parallel to the main crest that the longitudinal axis is a wave amplitude, the peak that secondary wave crest is two kinds, the continuous wave closed line of the alternative wave of paddy, the crest number N=4+2a (a=1 that centrage is one-sided, 2 ...) (N=6.8. ...), except that port and, each group beam column is interior by two kinds of masters that do not wait wave amplitude, secondary peak is spaced, adopt S shape bridge muscle main peak between group and the group in succession, the cylinder network is regardless of the master in two groups of beam-column unit of port, secondary peak, each wave amplitude equates; Main crest in the adjacent beam column group is connected in opposite directions, realize that with S type bridge muscle secondary wave crest is not connected by the bridge muscle, S bridge muscle and the suitable transition of main in opposite directions amplitude wave peak beam column inner edge circle do not have acute angle to form.
Technical scheme is as follows:
Support Design forms 1, is that the alternative wave curve of main passive peak valley is called " beam column " that by two parts unit claims " group "; 2, be mainly to work the S type curve that connects the beam column effect to be called " bridge muscle ", unit claims " individual ".
1, " beam column " described in detail: each group beam column is designed to connect peak, paddy with arch arc peak valley end shape by the streamline wave; With circumference perpendicular to axial direction is peak, the alternative wave center of curve of paddy line, same group of beam column wave is to be wave amplitude (main crest to be parallel to the longitudinal axis, two kinds of secondary wave crests) the continuous wave closed line of the alternative wave of peak, paddy, the crest number N=4+2a (a=1,2 that centrage is one-sided ...) (N=6.8. ...).Except that port and, does not wait the primary and secondary of wave amplitude peak-to-peak by two kinds in each group beam column every arrangement, group with organize between employing S shape bridge muscle main peak method in succession.The cylinder network is regardless of the primary and secondary peak in two groups of beam-column unit of port, each wave amplitude equates.
The design function of this kind beam column is: arch arc peak energy makes and present better compressive resistance in identical span, and straight line is not adopted in the connection between the arch arc peak valley, but adopts two different curves of radius of curvature to connect, and its effect is to make Stress Transfer that the gradual change buffer stage be arranged.And the designs that the design of two groups of beam columns of support port adopts wave amplitude to equate, value between its amplitude is got among main wave amplitude and the inferior wave amplitude its objective is in order to reduce the loudspeaker effect of port, the effective length of simultaneously accurate locating support.Outer respectively organize the method that beam column adopts main wave amplitude and time wave amplitude to be connected at interval at port, in order when strengthening radial support power, to have good flexible and pliability designs, because inferior wave amplitude length vertically is short, it can abdicate ideal side limb shaping space for rack side wall after the swollen expansion of support; Dimension wave amplitude total length is little in its intervention course of conveying before swollen expansion, the subsides axle is effective, and pliable and tough propelling movement is good, has avoided tangential perk harmful effect.This kind design makes the good and axial suppleness of support radial support power, the good perfect adaptation of propelling movement property, and the total occupation rate of metal is reduced, and has strengthened biomechanical compatibility from port and whole two aspects.
2, " bridge muscle " described in detail: the main crest in the adjacent beam column group is connected in opposite directions, realize that with S type bridge muscle secondary wave crest is not connected by the bridge muscle.S bridge muscle and the suitable transition of main in opposite directions amplitude wave peak beam column inner edge circle do not have acute angle to form, and prevent stress concentration.The S type adopts and to be designed to little tortuous bow moulding, and the one, in order to increase pliability, the 2nd, in order to strengthen axial compression resistance, reduce the axial shrinkage ratio.The correspondence because the primary and secondary peak of two adjacent groups interlaces.So S type bridge muscle is vertical in the whole expanded view of support, also be horizontal, arranged askew especially, this arranged askew is after forming the cylinder network structure, implanting in the arteries just is to match with blood vessel spiral rill, this Micromechanics structure helps hemorheology, is the compatible good sign of biomechanics.
Characteristics of the present invention are that the radial support power of support is good, and radially relaxation shrinkage is little; Axial compliance is good, and pliability is good, and axial shrinkage is little, and the sidewall window is big, and the side limb is orthopedic, and the metal covering distributes proper, and fatigue durability is good, practical application, and effect is remarkable.
Description of drawings
Every group of beam column that Fig. 1 designs for the present invention is made up of 6 primary and secondary wave amplitude unit, and main peak is by the front view of the continuous netted supporting structure product of cylinder of S bridge muscle between every adjacent set.Visible support edges at two ends is neat among the figure, is easy to appropriately assemble with induction system, and wave amplitude size and intermediate structure are different, has scientifically avoided the port loudspeaker effect at expansion initial stage.S type bridge muscle only connects main wave amplitude between group, does not connect time wave amplitude, and this design is a kind of a kind of design of maximizing favourable factors and minimizing unfavourable ones between full encirclement and semi-surrounding.Can improve flexibility and can magnify the side neck mouth again, eliminate the shortcoming of crooked perk simultaneously again.
Fig. 2 is the left view of the beam column construction section of Fig. 1.The position that shows 12 hatchings among the figure does not wait the circumferential centrage of wave amplitude to cut open by 6 unit arch arc stream line structures, and these 12 beam column sections are evenly distributed on has good radial support power on the circumference, finish the major function of support.
Fig. 3 is the circumferential cross-sectional view (left side is looked) of the part of the bridge muscle among Fig. 1.The position of three hatchings that show among the figure is circumferential profiles of junction of three S shape bridge muscle and two adjacent groups beam column master ripple, it is angular distribution on circumference that they evenly are 120 degree, and these three profile positions are critical transition notch points that hard and soft alternate, the sidewall window of support shrinks.
Fig. 4 is the expansion front view of Fig. 1.To the narration of 1,2,3 figure, when facing the structure of this figure again, just can clearly observe the occupation ratio of metal and the harmonious distribution of sizes between beam column and the bridge muscle in conjunction with above.
Fig. 5 is unitary enlarged diagram of main wave amplitude.
Fig. 6 is time unitary enlarged diagram of wave amplitude.
Shown in Fig. 1-6, arc and streamline type reticular cylinder stent for human lumen. Can be by metal or nonmetal Form. Each group beam-column design is with arch arc peak valley end shape, by streamline wave connecting peak, paddy; To hang down Straight is the Wave curved center line that peak, paddy replace in axial circumference, and same group of beam column wave is with flat Row is the peak of wave amplitude (main crest, two kinds of secondary wave crests), the continuous wave closed line of wave that paddy replaces in the longitudinal axis, The crest number N=4+2a (a=1,2 that center line is one-sided ...) (N=4.6.8. ...). Except port and , do not wait the primary and secondary of wave amplitude peak-to-peak every arrangement by two kinds in each group beam column outward, adopt S shape between group and the group Bridge muscle main peak is method in succession. The cylinder network in two groups of beam-column unit of port regardless of the primary and secondary peak, every Individual wave amplitude equates.
Each S type bridge muscle and two adjacent groups master crest be along cutting streamlined linking to each other, suspended span in two groups of beam column troughs it Between play submissive linking effect and axial compression resistance effect and the effect of stretch metal deposit. All S bridge muscle shapes one Cause, in the distribution of expanded view, can see, have horizontal stroke, vertical, oblique orderly in conjunction with effect. In two adjacent groups Between the beam column waveform, the primary and secondary ripple is straggly relatively, makes Metal Distribution good. To same layout design primary and secondary, And two-port wave amplitude (3 values) determine constant, to three values of support Design of different size, according to reality Need to set. But consistent with three values of drawing. Length according to required support is different with diameter, design Group number difference, every group unit number is also different, and the bridge muscle number between per two groups is also different; Group to satisfy main ripple, The ratio of inferior wave number is the relation of 1:1, and two adjacent groups beam column main wave number is counted it with their S type bridge muscle in succession Than the relation that is 2:1.
The specific embodiment
I type arc and streamline type reticular cylinder stent for human lumen, angiocarpy bracket.The design of support at present is 8 primary and secondary wave amplitude unit and forms; S shape bridge muscle is 4 of weeks; With circumference perpendicular to axial direction is peak, the alternative wave center of curve of paddy line, and the wave amplitude unit is connected with 3 kinds of forms: the main connection, primary and secondary connects, inferior connection; When being supporting structure, the figure of previous crops launches front view.Can be by metal or nonmetal forming.Each group beam column is designed to connect peak, paddy with arch arc peak valley end shape by the streamline wave; With circumference perpendicular to axial direction is peak, the alternative wave center of curve of paddy line, same group of beam column wave is to be wave amplitude (main crest to be parallel to the longitudinal axis, two kinds of secondary wave crests) the continuous wave closed line of the alternative wave of peak, paddy, the crest number N=4+2a (a=1,2 that centrage is one-sided ...) (N=6.8. ...).Except that port and, does not wait the primary and secondary of wave amplitude peak-to-peak by two kinds in each group beam column every arrangement, group with organize between employing S shape bridge muscle main peak method in succession.The cylinder network is regardless of the primary and secondary peak in two groups of beam-column unit of port, each wave amplitude equates.
Each S type bridge muscle is cut streamlined linking to each other with two adjacent groups master crest is suitable, and suspended span is played submissive linking effect and axially stretched the deposit effect between two groups of beam column troughs.All S bridge muscle shape unanimities can be seen in the distribution of expanded view, have horizontal stroke, vertical, oblique orderly in conjunction with effect.Between two adjacent groups beam column waveform, the primary and secondary ripple is straggly relatively, makes Metal Distribution good.To same drawing design primary and secondary, and two-port wave amplitude (3 values) determine constantly, to three values of support Design of different size, set according to actual needs.But it is consistent with three values of drawing.Length according to required support is different with diameter, and the group of design is counted difference, and every group unit number is also different, and the bridge muscle number between per two groups is also different; Group will satisfy the ratio of main ripple, inferior wave number, is the relation of 2:1, and two adjacent groups beam column master wave number is the relation of 2:1 with the ratio of their S type bridge muscle number in succession.
Claims (5)
1, arc and streamline type reticular cylinder stent for human lumen, comprise the alternative wave curve of passive peak valley beam column and work the S type curved bridge muscle that is connected the beam column effect, it is characterized in that being designed to each group beam column with the arch arc is the top of peak valley, connects peak, paddy by the streamline wave; With circumference perpendicular to axial direction is the peak, the alternative wave center of curve of paddy line, same group of beam column wave is to be parallel to the main crest that the longitudinal axis is a wave amplitude, the peak that secondary wave crest is two kinds, the continuous wave closed line of the alternative wave of paddy, the one-sided crest number N=4+2a of centrage, a=1,2 ... N=6,8 ... except that port and, each group beam column is interior by two kinds of masters that do not wait wave amplitude, secondary peak is spaced, adopt S shape bridge muscle main peak between group and the group in succession, the cylinder network is regardless of the master in two groups of beam-column unit of port, secondary peak, each wave amplitude equates; Main crest in the adjacent beam column group is connected in opposite directions, realize that with S type bridge muscle secondary wave crest is not connected by the bridge muscle, S bridge muscle and the suitable transition of main in opposite directions amplitude wave peak beam column inner edge circle do not have acute angle to form.
2, according to the described arc and streamline type reticular cylinder stent for human lumen of claim 1, it is characterized in that the employing of S type is designed to little tortuous bow moulding, S type bridge muscle has horizontal stroke, vertical, oblique orderly bonded structure in the whole expanded view of support.
3, according to the described arc and streamline type reticular cylinder stent for human lumen of claim 1, it is characterized in that each S type bridge muscle and two adjacent groups master crest along cutting streamlined linking to each other, suspended span is between two groups of beam column troughs; All S bridge muscle shape unanimities have horizontal stroke, vertical, oblique orderly combination.
4, according to claim 1 or 3 described arc and streamline type reticular cylinder stent for human lumen, it is characterized in that to same drawing design primary and secondary, and the two-port wave amplitude determine constantly, to three values of support Design of different size, set according to actual needs; But consistent with three values of drawing, not watch according to the length and the diameter of required support, the group of design is counted difference, and every group unit number is also different, and the bridge muscle number between per two groups is also different; Group will satisfy the spaced relation in primary and secondary peak that does not wait wave amplitude by two kinds, and two adjacent groups beam column master wave number is the relation of 2:1 with the ratio of their S type bridge muscle number in succession.
5,, it is characterized in that the design of support is 8 primary and secondary wave amplitude unit compositions according to the described arc and streamline type reticular cylinder stent for human lumen of claim 1; S shape bridge muscle is 4 of weeks; With circumference perpendicular to axial direction is peak, the alternative wave center of curve of paddy line, and the form that the wave amplitude unit connects is that primary and secondary connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100787347A CN100469338C (en) | 2006-05-11 | 2006-05-11 | Arc and streamline type reticular cylinder stent for human lumen |
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| CNB2006100787347A CN100469338C (en) | 2006-05-11 | 2006-05-11 | Arc and streamline type reticular cylinder stent for human lumen |
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| CN100469338C true CN100469338C (en) | 2009-03-18 |
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| GB201106757D0 (en) * | 2011-04-20 | 2011-06-01 | Arterius Ltd | A stent |
| CN117224297B (en) * | 2023-11-13 | 2024-02-13 | 太原理工大学 | Lower limb artery stent with reverse combined structure |
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Denomination of invention: Arc and streamline type reticular cylinder stent for human lumen Effective date of registration: 20140828 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: Liaoning Biomedical Materials R&D Center Co., Ltd. Registration number: 2014990000710 |
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Date of cancellation: 20141105 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: Liaoning Biomedical Materials R&D Center Co., Ltd. Registration number: 2014990000710 |
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Denomination of invention: Arc and streamline type reticular cylinder stent for human lumen Effective date of registration: 20141106 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: Liaoning Biomedical Materials R&D Center Co., Ltd. Registration number: 2014990000935 |
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Address after: 116622 Guangming Street, Jinzhou District, Liaoning, Dalian Patentee after: LIAONING YINYI BIOTECHNOLOGY CO., LTD. Address before: 116622 Guangming Street, Jinzhou District, Liaoning, Dalian Patentee before: Liaoning Biomedical Materials R&D Center Co., Ltd. |
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Date of cancellation: 20151203 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: Liaoning Biomedical Materials R&D Center Co., Ltd. Registration number: 2014990000935 |
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Denomination of invention: Arc and streamline type reticular cylinder stent for human lumen Effective date of registration: 20151231 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: LIAONING YINYI BIOTECHNOLOGY CO., LTD. Registration number: 2015990001207 |
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Date of cancellation: 20160704 Granted publication date: 20090318 Pledgee: The financial credit financing guarantee (Dalian) Limited by Share Ltd Pledgor: LIAONING YINYI BIOTECHNOLOGY CO., LTD. Registration number: 2015990001207 |
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