CN204581598U - Reduce the valve bracket of reduction length and there is the valve replacement device of this support - Google Patents
Reduce the valve bracket of reduction length and there is the valve replacement device of this support Download PDFInfo
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- CN204581598U CN204581598U CN201520175328.7U CN201520175328U CN204581598U CN 204581598 U CN204581598 U CN 204581598U CN 201520175328 U CN201520175328 U CN 201520175328U CN 204581598 U CN204581598 U CN 204581598U
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Abstract
The utility model discloses and a kind ofly reduce the valve bracket of reduction length and there is the valve replacement device of this valve bracket, wherein, valve bracket comprises the support rack of tubulose, described support rack wherein one section be changeover portion, the ratio of axial length before and after the compression of this changeover portion equals 1.The axial length of described changeover portion is support rack total length at least 25%.Described changeover portion is made up of along the axially extended straight-bar of valve bracket some, and each straight-bar is circumferentially evenly arranged.This utility model reduces the valve bracket of reduction length, the length variations before and after valve bracket compression can be reduced, improve the bending compliance of valve bracket, ensure that valve bracket keeps good compression performance and intensity simultaneously, enable valve arrive implantation position smoothly in human body, reduce the risk of postoperative generation vascular complication.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to a kind ofly reduce the valve bracket of reduction length and have the valve replacement device of this valve bracket.
Background technology
Tetralogy of Fallot is modal Children with Cyanotic Congenital Heart Disease in survival baby, and sickness rate accounts for 10 ~ 15% of all kinds of congenital heart disease.
Tetralogy of Fallot is made up of following four kinds of deformities: (1) stenosis of pulmonary artery, common with infundibular stenosis, and be secondly that infundibulum and valve merging are narrow, stenosis can increase with the age and increase the weight of; (2) ventricular septal defect, affiliated high-order membranous part defect; (3) aortic overriding, aortic overriding is on Ventricular, and along with aorta is grown, the right side can be increased the weight of gradually across phenomenon, and about 25% patient is right aortic arch; (4) right ventricle is plump, for after stenosis of pulmonary artery, the increase of right ventricle load causes.Have the greatest impact with the Pathophysiology of stenosis of pulmonary artery to infant in above four kinds of deformities.
In tetralogy of Fallot surgical operation, doctor, when repairing pulmonary artery, valve of pulmonary trunk or right ventricle infundibular stenosis, is generally by implanting sticking patch at correspondence position, solving the problem of main pulmonary artery, PBS or pulmonary stenosis.But this surgical operation is a kind of palliative treatment, often cause valve of pulmonary trunk to lack, when infant grows to adult, still need to continue to treat for valve of pulmonary trunk disappearance.
Valve of pulmonary trunk disappearance problem after growing up for infant, secondary thoracotomy Operation valve can be adopted to solve, also can adopt interventional method, implantable artificial cusps of pulmonary valve solves.Adopt interventional method to compare surgical operation, greatly can reduce the operation wound of patient, provide another therapy approach for operating patient can not be born.
Infant is through first time sticking patch Post operation, and aorta is soft, enlarged-diameter, and therefore, length and the diameter dimension of the artificial cusps of pulmonary valve of required implantation are all larger.Valve of pulmonary trunk membrane support of the prior art is before implant into body, that the state compressed is placed in sheath pipe, be transported to after in human body by sheath pipe, valve of pulmonary trunk membrane support discharges by sheath pipe, valve of pulmonary trunk membrane support after release returns to naturalness, plays the effect of supporting prostheses valve.
Existing lung arterial support is for the ease of compression, agent structure is network, such as, application publication number is that the Chinese invention patent document of CN 103431931A discloses a kind of lung arterial support, comprise the support rack of tubulose, and be connected to and support the axial two ends of rack and expanded radially be the inflow segment of enlarging and flows out section, described support rack is contiguous to flow out section position and has some first module lattice around circumference distribution, first module lattice employing rhombus.
When the main part employing diamond structure of valve of pulmonary trunk membrane support, no matter be length direction or diametric(al), change in size before and after compression is larger, and the implantation path of cusps of pulmonary valve is successively by vein, right atrium, right ventricle, main pulmonary artery, the flexibility in this implantation path is larger, if the length after valve of pulmonary trunk compression is long, will the compliance in apparatus course of conveying be had a strong impact on, increase conveying difficulty.
When heart valve bracket of the prior art sends into human body by induction system, the apparatus loading station of induction system is placed on after normally being compressed by heart valve bracket, and the apparatus loading station being placed with valve bracket is part the hardest in whole sheath pipe, in order to make the length of this most tough parts minimum, to meet the demand by the larger implantation path of flexibility, the length after being compressed by heart valve bracket is needed to reduce.
Support rack in this utility model refers in valve bracket and removes for strutting the part of blood vessel outside positioning element, and be generally tubulose, blood flows in inner tubular portion, acts on mutually with the prosthetic valve of inner tubular portion.Support rack to be not limited to be the tubular of isometrical extension, the end supporting rack can have diametrically expands or shrinks.
In order to reduce the length after supporting rack compression, this utility model arranges one section of changeover portion on support rack, changeover portion before compression after retainer shaft upwards length is constant, the network compared to existing technology, length variations in the axial direction before and after can reducing to compress.
As preferably, the axial length of described changeover portion is support rack total length at least 25%.Only when changeover portion axial length reaches more than 25% with the ratio supporting rack total length, the effect of changeover portion can be manifested, namely based on the existence of changeover portion, the length of the support rack after compression is enable to be reduced to the requirement meeting bending compliance, enable support rack successfully arrive inside of human body expection position, ensure carrying out smoothly of operation.
Although changeover portion can reduce to support rack compression antero posterior axis length variations upwards, but, also not the longer the better for the length of changeover portion, because, although network compression front and back length variations is in the axial direction larger, the structure of network can ensure that supporting rack has enough intensity, can bear long blood and wash away, and the structure of network enables support rack be compressed, thus be placed in sheath pipe.
Therefore, preferably, the axial length of described changeover portion is support rack total length 40 ~ 90%.Further preferably, the axial length of described changeover portion is support rack total length 50 ~ 80%.
As the simplest embodiment, described changeover portion is made up of along the axially extended straight-bar of valve bracket some, and each straight-bar is circumferentially evenly arranged.
Straight-bar extends along the axis of valve bracket, and the length of straight-bar and the axial length of changeover portion, circumferentially evenly arrange, can ensure to support rack integrally-built symmetry, stand blood flow in the blood vessel for a long time when washing away, uniform force, not easily there is canting, thus blood vessel wall is damaged.
As preferably, the axial two ends of described support rack are connected with inflow segment and flow out section, the two ends of described changeover portion and inflow segment, flow out between section and are connected by grid section or are directly connected.
Changeover portion by grid section and inflow segment or flow out section be connected time, changeover portion and grid section form support rack described in the utility model jointly.
, after making valve bracket implant into body, not easily there is displacement with the motion of heart in described inflow segment and outflow Duan Juncheng enlarging.
When discharging in human body, the inflow segment in valve bracket and outflow section are all likely first discharge end, are in the inflow segment or outflow section that first discharge end, are called flared section.Flared section is connected with all end nodes supporting respective side on rack.
All end nodes are connected with flared section, avoid occurring isolated summit at the position of the non-end of valve bracket, eliminate after valve bracket is compressed into sheath pipe, occur the phenomenon of spine.
The outward flange of described flared section is surrounded by some bending support bars, supports the end node corresponding with support bar position on rack and is all connected with support bar.Described end node to intersect on support bar or draws bar and cross by connecing and be connected on support bar.
All end nodes are directly connected or draws bar be connected on support bar by connecing, namely support on rack and there is not the isolated end node existed, each end node is at least connected with three linear edges, and when compression occurs whole valve bracket, end node can not be deformed into spine.
The two ends of every root support bar connect the end node supporting rack respectively, and the middle part of support bar extends along the axis supporting rack, and the position of support bar approach end node is bent outwardly to form enlarging.Described connecing is drawn bar and is deviated from support rack gradually by corresponding end node to the extension path of support bar.
Connect and draw bar and also have suitable bending, and the curved shape of degree of crook and support bar adapts, connect and draw bar and support bar is positioned on same smooth surface.
As preferably, the angle of extension path two end point connecting line and valve bracket axis is 0 ~ 70 degree.When extension path and valve bracket axis angle are 0 degree, connect the length of drawing bar the shortest, but, draw bar and support bar all has warp architecture owing to connecing, therefore, connect the extension path drawing bar and usually can not parallel with the axis of valve bracket.Connect and draw the remittance of bar needs on support bar, in order to coordinate the shape of support bar, connecing the extension path drawing bar and also not easily with the axis of valve bracket, there is very large angle.
Preferably, the angle of extension path two end point connecting line and valve bracket axis is 20 ~ 60 degree.Further preferably, the angle of extension path two end point connecting line and valve bracket axis is 30 ~ 45 degree.
Connect and draw bar and be connected with the most contiguous support bar, connecing the angle drawing bar and support bar intersection area is acute angle.This structure is adopted to be easy to maintain original mechanical property.
Four often adjacent end nodes are as one group, in one group of end node, the two ends of described support bar are connected with distance two end nodes farthest respectively, two end nodes being positioned at middle part connect by one respectively and draw bar and be connected on the support bar of respective side, and two connect and draw bar and mutually disjoint, every root connects and draws the bar position crossing with support bar and be roughly positioned at flared section middle part axially.
In order to farthest retain existing valve bracket structure, the processing of valve bracket is more easily carried out, preferably, described grid section is network, and changeover portion each straight-bar termination connects with corresponding rhombus summit.
Each straight-bar termination connects with corresponding rhombus summit, first, based on the symmetrical structure of network, be easier to control each straight-bar circumferentially evenly distributed, processing is more easily carried out, secondly, the end points that valve bracket exposes is less, be not easy to puncture sheath pipe or blood vessel, finally, the stress of valve bracket is more simple, and the structural design (such as selecting suitable axis and radical length) being convenient to valve bracket simultaneously, is also conducive to valve bracket holding position in the blood of flowing and stablizes.
As preferably, each straight-bar termination of changeover portion is connected to the rhombus summit of network towards changeover portion.
The two ends of straight-bar are connected with a rhombus summit respectively, and two adjacent straight-bars and the corresponding edge of rhombus be connected with straight-bar form hexagonal structure, and this each interior angle hexagonal is obtuse angle.Adopt this structure farthest can reduce the summit quantity of rhombus exposure, make the safety in utilization of valve bracket better.
Network described in this utility model is not proper rhombus, and each limit of rhombus can be slightly bending, and each formation connects rotund structure, stress concentration point when reducing stressed.
This utility model additionally provides a kind of valve replacement device, comprises described valve bracket, and is fixed on the prosthetic valve of described support rack inside.
The support rack of described valve bracket and the equal overlay film of inflow segment, prosthetic valve can make the inwall at valve bracket, existing additive method also can be adopted to carry out installation and fix.
This utility model reduces the valve bracket of reduction length, the length variations before and after valve bracket compression can be reduced, improve the bending compliance of valve bracket, ensure that valve bracket keeps good compression performance and intensity simultaneously, enable valve arrive implantation position smoothly in human body, reduce the risk of postoperative generation vascular complication.
Utility model content
This utility model provides a kind of valve bracket reducing reduction length, the length variations before and after valve bracket compression can be reduced, improve the bending compliance of valve bracket, valve is enable to arrive implantation position smoothly in human body, ensure carrying out smoothly of operation process, reduce the risk of postoperative generation vascular complication.
Reduce a valve bracket for reduction length, comprise the support rack of tubulose, described support rack wherein one section be changeover portion, the ratio of axial length before and after the compression of this changeover portion equals 1.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the first embodiment of the lung arterial support reducing reduction length;
Fig. 2 is the axonometric chart of the first embodiment of the lung arterial support reducing reduction length;
Fig. 3 is the schematic diagram (rear half side omission) of the second embodiment of the lung arterial support reducing reduction length;
Fig. 4 is the schematic diagram of the aortic stents reducing reduction length.
In figure: 1, flow out section; 2, grid section; 3, changeover portion; 4, end node; 5, inflow segment; 6, support bar; 7, straight-bar; 8, connect and draw bar; 9, grid section; 10, inflow segment; 11, changeover portion; 12, straight-bar; 13, grid section; 14, grid section; 15, section is flowed out.
Detailed description of the invention
Embodiment 1
Below in conjunction with accompanying drawing, for lung arterial support, further explaination is done to this utility model.
As shown in Figure 1 and Figure 2, reduce the lung arterial support of reduction length, comprise and support rack and be connected to the inflow segment 5 that supports the axial two ends of rack and flow out section 1, support rack wherein one section be changeover portion 3.
One end of changeover portion 3 is connected with inflow segment 5 by grid section 13, the other end of changeover portion 3 by grid section 2 with flow out section 1 and be connected, grid section 2, grid section 13 and changeover portion 3 jointly form and support rack.Grid section 2 is made up of continuous print rhombus, grid section 13 is made up of continuous print half rhombus, inflow segment 5 compares changeover portion 3, expand outwardly formation enlarging diametrically, the limit of rhombus the straight line of non-critical, but be slightly bent outwardly, rhombus on circumferential of inflow segment 5, grid section 2 and grid section 13 or half rhombus number identical.
Changeover portion 3 is made up of along the axially extended straight-bar 7 of lung arterial support some, and each straight-bar 7 is circumferentially evenly arranged, and the axial length of changeover portion 3 is support rack total length 70%.
Changeover portion 3 each straight-bar 7 termination connects with corresponding rhombus summit, and changeover portion 3 each straight-bar 7 termination is connected to the rhombus summit of network towards changeover portion 3.As seen from Figure 1, each straight-bar 7 of changeover portion 3 forms hexagon with the limit of adjacent rhombus, and hexagonal each interior angle is obtuse angle.
Embodiment 2
Except having except identical changeover portion 3 structure with embodiment 1, this embodiment eliminates the isolated end node existed in lung arterial support.
As shown in Figure 3, the expanded radially of inflow segment 5 and outflow section 1 is enlarging, and when discharging in human body, the outflow section 1 of lung arterial support, for first to discharge end, flows out section 1 and is connected with all end nodes 4 supporting respective side on rack.Eliminate the rear half side of lung arterial support in Fig. 3, only show the front half side of lung arterial support.
The outward flange flowing out section 1 is surrounded by some bending support bars 6, four often adjacent end nodes 4 are as one group, in one group of end node 4, there are a support bar 6 and two connect and draw bar 8, the two ends of support bar 6 are connected with two end nodes 4 of lie farthest away respectively, two end nodes 4 being positioned at middle part connect by one respectively and draw bar 8 and be connected on the support bar 6 of respective side, these two connect and draw bar 8 and mutually disjoint, and every root connects and draws bar 8 position crossing with support bar 6 and be roughly positioned at and flow out section 1 middle part axially.
Connect and draw bar 8 and deviate from support rack gradually by the extension path of corresponding end node 4 to support bar 6, connect that to draw bar 8 with the angle of support bar 6 intersection area be acute angle.
Embodiment 3
Below in conjunction with accompanying drawing, for aortic stents, further explaination is done to this utility model.
As shown in Figure 4, reduce the aortic stents of reduction length, comprise and support rack and be connected to the outflow section 15 and inflow segment 10 that support the axial two ends of rack, support rack wherein one section be changeover portion 11.
One end of changeover portion is connected with outflow section 15 by grid section 9, the other end of changeover portion 11 by grid section 14 with and flows out section 10 and is connected, grid section 14, grid section 9 and changeover portion 11 common formation support rack.Grid section 14, grid section 9 are made up of continuous print half rhombus, and inflow segment 10 is compared changeover portion 11 and expanded outwardly formation enlarging diametrically, the limit of rhombus the straight line of non-critical, but are slightly bent outwardly.
Changeover portion 11 is made up of along the axially extended straight-bar 12 of aortic stents some, and each straight-bar 12 is circumferentially evenly arranged, and the axial length of changeover portion 11 is support rack total length 80%.
Changeover portion 11 each straight-bar 12 two ends connects with half rhombus summit of corresponding grid section 14, grid section 9, and as seen from Figure 4, each straight-bar 12 of changeover portion 11 forms hexagon with the limit of half adjacent rhombus, and hexagonal each interior angle is obtuse angle.
Length after adopting the technical solution of the utility model greatly can reduce valve bracket compression, assuming that an axial diamond-shaped element of support rack changeover portion has n, the compression of each diamond-shaped element is rear is X than the axial increment before compression, then after the compression of support rack, length increase change value is n*X; Contrast can obtain, if changeover portion diamond-plaid is changed into straight line, the two ends of changeover portion will remain each half diamond-plaid respectively, then support rack compression anterior-posterior length and be changed to 1*X, straight line portion compression antero posterior axis is ' zero ' to length variations amount.Illustrate as follows: in current modal self-inflated lung arterial support, support rack to be all made up of network, for modal 30# lobe, circumferentially be distributed with 12 networks, the straight section length of secure valve is 30mm, axially there are 4 diamond-plaids, when valve bracket is compressed, diamond-plaid becomes straight line, and straight section length variations is about 43.04mm; After the technical scheme adopting this utility model to provide, remain each half diamond-plaid respectively at the two ends of changeover portion 3, after compression, straight section length is about 33.26mm, decreases the reduction length of 9.78mm, Be very effective.
In addition, the metal material that valve bracket uses (can be generally memorial alloy by this utility model, this utility model adopts Ultimum Ti) consumption reduces nearly half, both the diameter after valve bracket compression can have been reduced, bending compliance can be improved again, make being promoted further by performance of valve.
The valve replacement device that this utility model provides, comprises aforesaid valve bracket, and is fixed on the prosthetic valve supporting rack inside.After valve bracket enters human body precalculated position by induction system, valve bracket is by discharging in sheath pipe and expanding, and the prosthetic valve that valve bracket inside is fixed substitutes original valve in human body, realizes making the unidirectional function passed through of blood.
Claims (8)
1. reduce a valve bracket for reduction length, comprise the support rack of tubulose, it is characterized in that, described support rack wherein one section be changeover portion, the ratio of axial length before and after the compression of this changeover portion equals 1.
2. the valve bracket reducing reduction length as claimed in claim 1, is characterized in that, the axial length of described changeover portion is support rack total length at least 25%.
3. the valve bracket reducing reduction length as claimed in claim 2, is characterized in that, the axial length of described changeover portion is support rack total length 40 ~ 90%.
4. the valve bracket of the reduction reduction length as described in as arbitrary in claims 1 to 3, it is characterized in that, described changeover portion is made up of along the axially extended straight-bar of valve bracket some, and each straight-bar is circumferentially evenly arranged.
5. the as claimed in claim 4 valve bracket reducing reduction length, is characterized in that, the axial two ends of described support rack are connected with inflow segment and flow out section, the two ends of described changeover portion and inflow segment, flows out between section and is connected by grid section or is directly connected.
6. the valve bracket reducing reduction length as claimed in claim 5, it is characterized in that, described grid section is network, and changeover portion each straight-bar termination connects with corresponding rhombus summit.
7. the valve bracket reducing reduction length as claimed in claim 6, it is characterized in that, each straight-bar termination of changeover portion is connected to the rhombus summit of network towards changeover portion.
8. a valve replacement device, is characterized in that, comprises the valve bracket as described in any one of claim 1 ~ 7, and is fixed on the prosthetic valve of described support rack inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520175328.7U CN204581598U (en) | 2015-03-26 | 2015-03-26 | Reduce the valve bracket of reduction length and there is the valve replacement device of this support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520175328.7U CN204581598U (en) | 2015-03-26 | 2015-03-26 | Reduce the valve bracket of reduction length and there is the valve replacement device of this support |
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| Publication Number | Publication Date |
|---|---|
| CN204581598U true CN204581598U (en) | 2015-08-26 |
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| CN201520175328.7U Active CN204581598U (en) | 2015-03-26 | 2015-03-26 | Reduce the valve bracket of reduction length and there is the valve replacement device of this support |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104720937A (en) * | 2015-03-26 | 2015-06-24 | 杭州启明医疗器械有限公司 | Valve support for decreasing compression length and valve replacement device with valve support |
| US11857441B2 (en) | 2018-09-04 | 2024-01-02 | 4C Medical Technologies, Inc. | Stent loading device |
| US11931253B2 (en) | 2020-01-31 | 2024-03-19 | 4C Medical Technologies, Inc. | Prosthetic heart valve delivery system: ball-slide attachment |
| US11944537B2 (en) | 2017-01-24 | 2024-04-02 | 4C Medical Technologies, Inc. | Systems, methods and devices for two-step delivery and implantation of prosthetic heart valve |
| US11957577B2 (en) | 2017-01-19 | 2024-04-16 | 4C Medical Technologies, Inc. | Systems, methods and devices for delivery systems, methods and devices for implanting prosthetic heart valves |
-
2015
- 2015-03-26 CN CN201520175328.7U patent/CN204581598U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104720937A (en) * | 2015-03-26 | 2015-06-24 | 杭州启明医疗器械有限公司 | Valve support for decreasing compression length and valve replacement device with valve support |
| WO2016149997A1 (en) * | 2015-03-26 | 2016-09-29 | 杭州启明医疗器械有限公司 | Valve scaffold with reduced compressed length and valve replacement device with valve scaffold |
| US11957577B2 (en) | 2017-01-19 | 2024-04-16 | 4C Medical Technologies, Inc. | Systems, methods and devices for delivery systems, methods and devices for implanting prosthetic heart valves |
| US11944537B2 (en) | 2017-01-24 | 2024-04-02 | 4C Medical Technologies, Inc. | Systems, methods and devices for two-step delivery and implantation of prosthetic heart valve |
| US11857441B2 (en) | 2018-09-04 | 2024-01-02 | 4C Medical Technologies, Inc. | Stent loading device |
| US11931253B2 (en) | 2020-01-31 | 2024-03-19 | 4C Medical Technologies, Inc. | Prosthetic heart valve delivery system: ball-slide attachment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 310051 311, 3 building, 2 building, 88 Jiangling Road, Binjiang District, Hangzhou, Zhejiang. Patentee after: Hangzhou Qiming Medical Devices Co., Ltd. Address before: 310051 East Building of Tax Youyou Building, 3738 Nanhuan Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Qiming Medical Device Co., Ltd. |
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| CP03 | Change of name, title or address |