CN209548145U - A kind of aortic valve stent of separate type release - Google Patents
A kind of aortic valve stent of separate type release Download PDFInfo
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- CN209548145U CN209548145U CN201822100311.1U CN201822100311U CN209548145U CN 209548145 U CN209548145 U CN 209548145U CN 201822100311 U CN201822100311 U CN 201822100311U CN 209548145 U CN209548145 U CN 209548145U
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Abstract
This application involves a kind of aortic valve stents of separate type release, section is sewed including valve, positioning element and artificial valve, the artificial valve is connected in the valve sewing section, the valve sewing section is two individual members with the positioning element and is connect by guiding device, the positioning element is prior to valve sewing section release, sliding connection structure is provided in the valve sewing section, one end of the guiding device is connected on the positioning element, the other end of the guiding device is connected on the positioning element after passing through in the sliding connection structure, the valve sewing section can be slided along the guiding device；The position of main body rack and locating piece can be effectively controlled, effectively coronary artery is avoided to block.
Description
Technical field:
The utility model belongs to medical instruments field, is related to a kind of aortic valve stent of separate type release.
Background technique:
Aortic stenosis is mainly by the sequelae of rheumatic fever, congenital aortic textural anomaly or senile aorta
Caused by valve calcification.Patient is asymptomatic in the compensatory phase, and the patient of aorta petal severe stenosis has burnout, expiratory dyspnea (labour mostly
Property or paroxysmal), angina pectoris, the symptom of dizziness or syncope, or even can die by visitation of God.
Aortic regurgitation, that is, aorta petal is open in ventricular contraction, and it is complete that the blood flow in left ventricle enters aorta directive
Body is closed in ventricular diastole, and endaortic blood reflux is prevented to return left ventricle, if aortic incompetence occurs
When, it cannot be closed tightly in diastole aorta petal, blood is caused to enter left ventricle from aorta adverse current.
In terms of the treatment of aortic valve disease, surgical valve displacement technique is traditional effective treatment method.It can
It is patient's polyphyly advanced age of this kind of disease, while there are Multiple organs disorders, physical qualification is difficult to receive surgical operation, becomes clinic and controls
Treat hopeless patient.In addition, the cause of disease of degenerative aortic valve disease is still not very clear, etiological treatment can not be carried out,
No effective method contains its development, and medication effect is bad.The measure of ideal treatment aortic valve disease should can change
The symptom of kind patient can extend its service life again.The percutaneous aortic valve sacculus urethroptasty carried out in one's early years is once used to treatment aorta
Valve is narrow, but the data of either single centre or polycentric materials for registration find that its long-term effect is bad.At home, outside
Section's prosthetic valve replacement is still a kind of main therapeutic choice.In recent years, some scholars have carried out percutaneous aortic valve film both at home and abroad
Displaced basis and clinical research, and obtain and arrive some breakthrough progress.To need the high-risk senile of surgery valve replacement
Aorta petal degeneration patient provides a kind of effective treatment method.2002, Cribier etc. was successfully made through conduit
Aortic valve replacement (Transcatheter Aortic Valve Replacement, TAVR), so far, the whole world is
More than 50,000 TAVR operations are completed, research all over the world shows: surgery changes valve or surgery changes valve and deposits for that can not carry out
In the patient of high risk, this technology is safely and effectively.Although carrying out the mostly high-risk patient of TAVR operation, postoperative 30
Its survival rate be higher than 90%, TAVR postoperative patient hemodynamic index be improved significantly.
But current native aortic valve incompetence is still listed in the contraindication of TAVR art.Main reason is that bracket
The accurate positionin of valve and accurate release are technical points the most key in TAVR operation.There is left and right coronary artery on aorta petal
Opening, adjoin bicuspid valve under valve, if positioning release inaccuracy, is likely to occur coronary artery blocking or a large amount of reflux of bicuspid valve etc.
Fatal complication.Traditional TAVR instrument either SAPIEN either CoreValve is mainly used for severe aortic valve
Narrow patient, and it is improper for aortic valves in patients with aortic regurgitation.In the prior art, it is set for the instrument of aortic valves in patients with aortic regurgitation
Meter has been achieved with certain common recognition, such as external JenaValve, Acurate, and domestic J-Valve is using similar self
The structure of leaflet clamping piece is conducive to the accurate positionin implantation of bracket for positioning three sinus of aorta petal in this way.But
The above instrument is still larger to patient trauma at present still mostly from through apex of the heart approach, proper at last cannot be percutaneously implantable.Needle
To how to take into account native leaflets clamping piece and the excessive problem of sheath, domestic scholars and engineers have been made some notional
It attempts.
A bicyclic aortic valve stent is described in patent CN201520325599.6 and CN201511017536.5,
A W-shaped ring-shaped fixing rings are added outside main body rack, three footing of fixed ring are for being fixed on three sinus of aorta
Interior, ring-shaped fixing rings are connect with three nitinol alloy wires with main body rack.Nitinol alloy wire is V-shaped, V-arrangement bending and fixed ring
V-arrangement bending is corresponding.The nitinol alloy wire of V-arrangement can be stretched as a word, so that fixed ring and the positional relationship of bracket are by inside and outside
Relationship becomes upper and lower relation.The main problem of the design is: 1) ring-shaped fixing rings are difficult to operate its contraposition actively upon discharge
Arteries and veins sinus, adjustability are poor；2) ring-shaped fixing rings once release sheath and are stuck in valve sinus portion, can not carry out reentry sheath, wind of performing the operation
Danger is big；3) ring-shaped fixing rings and not set constraint cause it to be easy to bounce in delivery sheath, can not be complete after often jumping out
The full centering realized with native valve, aggravates adjustment difficulty；4) after valve discharges completely, there is still the aortas that reclines for native leaflets
The risk of sinusoid wall blocking coronary artery；5) alignment of upper and lower bracket movement is poor, is easy shearing interferometry.
A kind of aorta petal film device conveyed through conduit is described in patent CN201610029112.9, with above-mentioned class
Seemingly, the upper end of main body rack forms the upper bell-mouth structure of air in three valve patterns, is additionally provided on the downside of main body rack for fixed
The positioning ring of position, positioning ring and main body rack are connected with position line.The main problem of the design is: 1) difficult after positioning ring release
Aortic sinus is aligned to operate it, adjustability is poor；2) even aligned aortic sinus is determined due to the impact force of blood flow
Position ring will be very easy to be rushed out sinus portion, cause the end of positioning ring clip that can not contradict in valve sinus bottom；3) valve is released completely
After putting, there is still the risks for the aorta sinusoid wall blocking coronary artery that reclines for native leaflets；4) alignment of upper and lower bracket movement is poor, is easy
Shearing interferometry.
It takes into account native leaflets clamping piece in conclusion the prior art has been able to part and reduces delivery conduit, however it is existing
Have technology exist positioning ring can not controlled release, alignment is poor, is difficult to adjust and fix after release and native leaflets are easy
The risk for blocking coronary opening needs valve replacement device that is a kind of while solving problem above.
Summary of the invention:
The purpose of the utility model is to overcome existing technical restrictions, for the aortic valve branch of existing separate type release
Frame can not effectively control the position of main body rack and locating piece, effectively coronary artery can not be avoided to block, and can not discharge completely
The problems such as after clamping piece back into sheath, develops a kind of aortic valve stent of novel separate type release.
The purpose of this utility model is achieved through the following technical solutions:
A kind of aortic valve stent of separate type release, including valve sewing section, positioning element and artificial valve, it is described
Artificial valve is connected in valve sewing section, the valve sewing section and the positioning element be two individual members simultaneously
It is connected by guiding device, the positioning element is discharged prior to valve sewing section, is provided with cunning in the valve sewing section
Dynamic connection structure, one end of the guiding device are connected on the positioning element, and the other end of the guiding device is from described
It is connected to after being passed through in sliding connection structure on the positioning element, the valve sewing section can be sliding along the guiding device
It is dynamic.
The purpose of this utility model can also further realize by the following technical programs:
Preferably, the positioning element is provided with anchoring section and gripping section, the gripping section are connect with the anchoring section, institute
The one end for stating guiding device is connected on the gripping section, and the other end of the guiding device is worn from the sliding connection structure
Later it is connected in the anchoring section, the valve sewing section can be sliding along the guiding device using the sliding connection structure
It is dynamic.
It is furthermore preferred that the gripping section is located at the proximal end of the anchoring section, and component is integrated with the anchoring section.
It is furthermore preferred that the anchoring section is fenestral fabric or wavy shaped configuration.It is furthermore preferred that the surface of the anchoring section
It is covered with film or braided fabric.
It is furthermore preferred that the gripping section tool is there are three bluff piece, the bluff piece is U-shaped or v-shaped structure.
It is furthermore preferred that the end of the bluff piece is arranged to the structure held together into the axis direction of the gripping section, it is described
Recess is provided on the outer profile of valve sewing section, after the valve sewing section discharges completely, the recess and the bluff piece
The structure inside held together matches.
It is furthermore preferred that native leaflets are located in the bluff piece and valve sewing after the valve sewing section discharges completely
Between section.
Preferably, the guiding device is flexible linear structure or banded structure.It is furthermore preferred that the guiding device is
More flexible wires.
Preferably, the guiding device is located between the positioning element and valve sewing section.
Preferably, after the valve sewing section discharges completely, the guiding device is straddled on the free edge of native leaflets.
It is furthermore preferred that the native leaflets are ridden and are dragged down by the guiding device, it is ensured that coronary opening can not be blocked.
Preferably, the relative axial position of valve sewing section and the positioning element by the guiding device length
It is limited.
Preferably, the valve sewing section and the positioning element are located at the different location of delivery sheath after being compressed.
Preferably, the sliding connection structure is hole.It is furthermore preferred that the sliding connection structure and the valve sew section
It is structure as a whole.It is further preferred that the sliding connection structure is located at the proximal part of valve sewing section.
Preferably, the guiding device and the tie point of the anchoring section are located on the distal portions of the anchoring section.
Preferably, multiple sliding connection structures are provided in valve sewing section.
Preferably, the valve bracket further includes auxiliary guiding device, and one end of the auxiliary guiding device is connected to institute
It states in anchoring section, the other end of the auxiliary guiding device is connected in the valve sewing section.
Preferably, native valve sinus portion is located at after the gripping section release, is at least partially disposed at after the anchoring section release
It is intravascular.
Preferably, the proximal end of the valve sewing section is configured with sealing element, when the aortic valve of separate type release
When bracket is implanted, the sealing element prevents blood from sewing the gap between section and autologous tissue by the valve.
Preferably, the sealing element is discontinuous banded structure.It is furthermore preferred that when the aorta of separate type release
When valve bracket is implanted, the lower section of the bluff piece corresponds to the discontinuous place of the sealing element.
Preferably, the distal end of the anchoring section is provided with fit structure, and the proximal end of the valve sewing section is provided with connection
Structure, the connection structure and the fit structure mutually constrain when by compression loaded in delivery sheath.
It is furthermore preferred that the connection structure is bar, the fit structure is hole, when the valve bracket is existed by compression loaded
When in delivery sheath, the connection structure passes through the fit structure.It is furthermore preferred that being provided with limit in the connection structure
Hole, when the valve bracket by compression loaded in delivery sheath when, the connection structure pass through the fit structure after, limit
Silk passes through the limit hole.
It is furthermore preferred that the connection structure is coil, the fit structure is hole, when the valve bracket is by compression loaded
When in delivery sheath, after the connection structure passes through the fit structure, limiting wire passes through the coil.
It is furthermore preferred that being arranged fluted in the connection structure, be provided with protrusion on the fit structure, the groove and
The protrusion is mutually matched.
Compared with the existing technology, utility model has the advantages that
1, it is different from the prior art, the utility model is provided with guiding device, institute between positioning element and main body valve
State guiding device and at least play four main functions: 1) the valve sewing section, which can be slided to reach along the guiding device, specifies
Position, such move mode can greatly enhance the alignment between valve sewing section and positioning element, avoid the two in phase
Mutual motion process generates interference and dislocation；2) during the contraposition and release of main body valve and positioning element, guiding device is ridden
Across on the free edge of primary native leaflets, the free edge activity of native leaflets can be effectively limited, is even more certainly completely after release
The free edge height of the low native leaflets of dynamic pressure avoids blocking coronary opening, while enhancing anchoring effect；3) described in auxiliary is realized
The controlled release of positioning element；4) guiding device also acts as the position-limiting action to main body valve and positioning element relative position, just
Yu doctor's operation.
2, the fixed form being different from the prior art is located in self first after the release of gripping section described in the utility model
Aortic sinus portion, then the anchoring section is at least partially disposed at intravascular after discharging, and is fixed using aorta ascendens, is set in this way
Meter, which is advantageous in that, ensures that positioning element will not fall off upon discharge, gives subsequent main body valve release the sufficient time.
3, the mutual constraint between section and the positioning element is sewed by the valve, realizes the controllable of the positioning element
Release avoids the positioning element from bouncing from delivery sheath during release and influences to be implanted into effect, convenient for control and adjusts
The angles and positions of the whole gripping section, while operation wind can be reduced after the positioning element discharges completely back into sheath
Danger.Valve bodies and positioning element are controlled respectively in compared with the prior art, such mutual constraint being capable of maximum limit
Degree reduces sheath pipe size.
4, it is different from the prior art, sealing element described in the utility model is discontinuous banded structure, when the valve
When bracket is implanted, the lower section of the bluff piece corresponds to the discontinuous place of the sealing element, i.e. the continuous place of sealing element is corresponding self
The intersection of leaflet, targetedly delivery sheath is effectively reduced while ensuring to reduce perivalvular leakage effect in partial sealing technology
Diameter.
5, it is different from the prior art, the position that the utility model gripping section is contacted with valve sewing section is the bumps matched
Profile, design is advantageous in that the contraposition and fixation for facilitating positioning element and main body valve in this way, is conducive to be anchored and reduce valve
Week leakage.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are a kind of schematic diagram of embodiment of the utility model, and Fig. 1 c is positioning element in the utility model
Structural schematic diagram, Fig. 1 d and Fig. 1 e be the utility model aortic valve stent cutting drawing.
Fig. 2 a- Fig. 2 c is the motion profile signal that valve sews section, positioning element and guiding device in the utility model
Figure.Fig. 2 d is a kind of schematic diagram of embodiment of positioning element in the utility model.
Fig. 3 a- Fig. 3 d is the schematic diagram of fit structure and connection structure in the utility model.Fig. 3 e is in the utility model
A kind of schematic diagram of embodiment of fit structure and connection structure.
Fig. 4 a- Fig. 4 l is the schematic diagram of the utility model operating procedure.
Fig. 5 a and Fig. 5 b are the schematic diagram of another embodiment in the utility model.
Fig. 6 a is the schematic diagram of another embodiment in the utility model, and Fig. 6 b is a kind of embodiment of sealing element
Schematic diagram, Fig. 6 c is the schematic diagram for another embodiment that the utility model valve sews section and positioning element.Fig. 6 d
For the schematic diagram of another embodiment in the utility model.
Specific embodiment:
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.
Distal end described in the utility model refers to one end far from the apex of the heart, and the proximal end refers to one end close to the apex of the heart.
Specific embodiment one:
As shown in Fig. 1 a- Fig. 1 e, as an implementation, a kind of aortic valve stent 100 of separate type release, packet
Valve sewing section 110, positioning element 120 and artificial valve 130 are included, the artificial valve 130 is connected the valve sewing
In section 110, the valve sewing section 110 is two individual members with the positioning element 120 and is connected by guiding device 140
It connects, so that valve sewing section 110 and the positioning element 120 are located at the different location of delivery sheath after being compressed, plays
Reduce the effect of delivery sheath diameter.The positioning element 120 is discharged prior to valve sewing section 110, the valve sewing
It is provided with sliding connection structure 111 in section 110, one end of the guiding device 140 is connected on the positioning element 120, institute
The other end for stating guiding device 140 is connected on the positioning element 120 after the sliding connection structure 111, the valve
Film sewing section 110 can be slided along the guiding device 140.In one embodiment, the positioning element 120 is provided with anchor
Determine section 121 and gripping section 122, the gripping section 122 is located at the proximal end of the anchoring section 121, the distal end of the gripping section 122 with
The proximal end connection of the anchoring section 121, the gripping section 122 is integrated component with the anchoring section 121 in this embodiment.Institute
The one end 1401 for stating guiding device 140 is connected on the gripping section 122, and the other end 1402 of the guiding device 140 is from institute
It states and is connected to after being passed through in sliding connection structure 111 in the anchoring section 121, the valve sewing section 110 can be led along described
Leading-in device 140 slides.Circumferentially there are three bluff piece 1221 (1221a, 1221b, 1221c), institutes for equal part outfit for the gripping section 122
Stating bluff piece is U-shaped or v-shaped structure, and to cooperate three aortic sinus physiological structures, the bluff piece 1221 reaches upon discharge
The behind and aorta petal sinus bottom of native leaflets, to complete to position.The guiding device 140 is flexible linear structure, at one
In embodiment, the guiding device 140 is three flexible wires, in other embodiments can also be using more flexible
Line is acted on to connect the valve sewing section 110 with the positioning element 120 with reaching better stable position, but more
Flexible wires may will increase push resistance.Fig. 1 d shows the cutting structure of positioning element 120, and Fig. 1 e shows valve sewing section
110 cutting structure.
As shown in Fig. 2 a- Fig. 2 c, as an implementation, the guiding device 140 be located at the positioning element 120 with
Between the valve sewing section 110, the injury suture in sliding process of guiding device 140 can be avoided to greatest extent in this way
The artificial valve 130 in valve sewing section 110, and can for it is subsequent force down that native leaflets free edge provides can
Energy.Specifically, the sliding connection structure 111 there are three being arranged in the proximal part of valve sewing section 110, the sliding
Connection structure 111 is hole.It is furthermore preferred that the sliding connection structure 111 is structure as a whole with valve sewing section 110.Institute
After stating the release completely of valve sewing section 110, the guiding device 140 is straddled on the free edge of native leaflets 180.The valve
Sewing section 110 and the relative axial position of the positioning element 120 are limited by the length of the guiding device 140, in fact,
By adjusting the length of the guiding device 140, can be realized when valve sewing section 110 is limited in patient's annulus position
While, the native leaflets 180 are ridden and are dragged down by the guiding device 140, it is ensured that do not block coronary opening.Another party
Face, as shown in Figure 2 d, the anchoring section 121 are fenestral fabric, and the surface of the anchoring section 121 is covered with film or braided fabric
160 for avoiding vascular dissection.In another embodiment, the anchoring section 121 is wavy shaped configuration (not shown).It is described
Guiding device 140 and the tie point of the anchoring section 121 are located on the distal portions of the anchoring section 121, the valve sewing
Section 110 is located at the different location of delivery sheath after being compressed with the positioning element 120, the guiding device 140 can assist
The positioning element 120 can especially weigh after the overwhelming majority of the anchoring section 121 is released upon discharge back into sheath
Newly enter sheath, doctor will may be selected to withdraw and discharge the positioning element 120 again depending on locating effect, and successful surgery is greatly improved
Rate.In conclusion being different from the prior art, the guiding device of the utility model at least plays four main functions: 1) institute
Arrival designated position can be slided along the guiding device by stating valve sewing section, and such move mode can greatly enhance valve
The alignment between section and positioning element is sewed, the two is avoided to generate interference and dislocation in mutual motion process；2) in main body valve
During the contraposition and release of film and positioning element, guiding device is straddled on the free edge of primary native leaflets, can be effective
The free edge activity of native leaflets is limited, is even more the free edge height for forcing down native leaflets automatically completely after release, avoids blocking
Coronary opening, while enhancing anchoring effect；3) auxiliary realizes the controlled release of the positioning element；4) guiding device also acts as
To the position-limiting action of main body valve and positioning element relative position, operated convenient for doctor.
As shown in Figure 3a, the distal end of the anchoring section 121 is provided with fit structure 1210, the valve sewing section 110
Proximal end is provided with connection structure 1101, when by compression loaded in delivery sheath, the connection structure 1101 and the cooperation
Structure 1210 mutually constrains.As shown in Figure 3b, as an implementation, the connection structure 1101 is bar, the cooperation knot
Structure 1210 is hole, when the valve bracket 100 by compression loaded in delivery sheath when, the connection structure 1101 passes through described
Fit structure 1210.As shown in Fig. 3 c and Fig. 3 d, limit hole 1102 is provided in the connection structure 1101, when the valve branch
Frame 100 by compression loaded in delivery sheath when, the connection structure 1101 pass through the fit structure 1210 after, the limit
It is limited silk 1103 in hole 1102 to pass through, only detaches the limiting wire 1103, the connection structure 1101 could match from described
It closes and is withdrawn from structure 1210.The mutual constraint between section 110 and the positioning element 120 is sewed by the valve, described in realization
The controlled release of positioning element 120 avoids the positioning element 120 from bouncing from delivery sheath during release and influence to plant
Enter effect, convenient for controlling and adjusting the angles and positions of the gripping section 122, while can be complete in the positioning element 120
Back into sheath after release, operation risk is reduced.Valve bodies and positioning element are controlled respectively in compared with the prior art,
Such mutual constraint can reduce sheath pipe size to greatest extent.As another embodiment, as shown in Figure 3 e, the connection
Structure 1101 is coil, and the fit structure 1210 is hole, when the valve bracket 100 by compression loaded in delivery sheath
When, the connection structure 1101 is limited silk 1103 after the fit structure 1210 and passes through.
In order to preferably illustrate the present embodiment, the valve bracket 100 can be conveyed by following operating procedure
And release:
(1) as shown in figures 4 a and 4b, by 100 compression loaded of valve bracket in delivery sheath 170, the valve
Sewing section 110 is located at the distal end of the positioning element 120, under the auxiliary of image documentation equipment, by implantation material through femoral artery or similar
Arterial route approach is delivered to patient's diseased region；
(2) as shown in Fig. 4 c and Fig. 4 d, the gripping section 122 is gradually discharged until all 1221 open-angles of bluff piece
Degree, the gripping section 122 are located at native valve sinus portion after discharging, and the anchoring section 121 is still compressed in delivery sheath at this time；
(3) as shown in Fig. 4 e and Fig. 4 f, the angles and positions of the bluff piece 1221 are adjusted, reach native leaflets behind and
Behind aorta petal sinus bottom, the anchoring section 121 is gradually discharged, the anchoring section 121 is at least partially disposed at intravascular after being released
Anchorage force is provided, since the valve sews the mutual constraint between section 110 and the positioning element 120, the anchoring section 121 is simultaneously
Will not bounce, and it is this by aorta ascendens be fixed in the way of, the positioning element 120 can't after complete release
It shifts and falls off because blood flow washes away, give subsequent main body valve release the sufficient time.Importantly, if doctor is dissatisfied
The positioning element 120 can be taken in sheath again under the auxiliary of the guiding device 140 by the position of the positioning element 120
In, human body is discharged or withdrawn again, and operation risk substantially reduces；
(4) as shown in Fig. 4 g and Fig. 4 h, after determining position, the limiting wire 1103, the connection structure 1101 are detached
It is withdrawn from from the fit structure 1210, the anchoring section 121, which is completely released, to be anchored in aorta ascendens；
(5) as shown in Fig. 4 i and Fig. 4 j, it will guide that Tip is nose heave newly to be closed up with sheath, such operation can help to compress
The delivery sheath 170 of the valve sewing section 110 is better by native leaflets.It pushes and conveys along the guiding device 140
Sheath by the length of the guiding device 140 until limited, and native leaflets 180 are ridden simultaneously by the guiding device 140 at this time
It forces down；
(6) as shown in Fig. 4 k and Fig. 4 l, the valve sewing section 110 is gradually discharged until its release completely, the valve
After sewing the release completely of section 110, native leaflets maintain the form being depressed to be located at the bluff piece 1221 and sew section with the valve
Between 110；
(7) delivery conduit is withdrawn.
The valve bracket 100 can also be conveyed and be discharged through approach such as the apex of the heart, transatrial septal punctures, operating procedure
It is similar as above, it repeats no more.
Specific embodiment two:
As shown in Figure 5 a, as another embodiment, a kind of aortic valve stent 200 of separate type release, including
Valve sews section 210, positioning element 220 and artificial valve (not shown), and the artificial valve is connected the valve sewing
In section 210, the valve sewing section 210 is two individual members with the positioning element 220 and is connected by guiding device 240
It connects, the guiding device 240 is banded structure.It is with the difference of specific embodiment one, the valve bracket 200 further includes auxiliary
Guiding device 250, specifically, auxiliary guiding device 250 is line, one end 2501 of the auxiliary guiding device 250 is connected to institute
It states in anchoring section 221, the other end 2502 of the auxiliary guiding device 250 is connected in the valve sewing section 210.It is described auxiliary
The effect of assistant director of a film or play's leading-in device 250 is together with the guiding device 240, so that valve sewing section 210 and the positioning region
Part 220 being capable of preferably stable position.Due to the connecting portion and the guiding device at auxiliary 250 both ends of guiding device
240 it is not the same, therefore it is described auxiliary guiding device 250 length need it is meticulous according to the length of the guiding device 240
Design.
The distal end of the anchoring section 221 is provided with fit structure 2210, and the proximal end of the valve sewing section 210 is provided with company
Binding structure 2101, the connection structure 2101 and the fit structure 2210 when compression loaded is in delivery sheath mutually about
Beam.As an implementation, as shown in Figure 5 b, it is arranged fluted 2104 in the connection structure 2101, the fit structure
Protrusion 2211 is provided on 2210, the groove 2104 and described raised 2211 is mutually matched.
Specific embodiment three:
As shown in Figure 6 a, as another embodiment, a kind of aortic valve stent 300 of separate type release, including
Valve sews section 310, positioning element 320 and artificial valve 330, and the artificial valve 330 is connected the valve sewing section
On 310, the valve sewing section 310 is two individual members with the positioning element 320 and is connect by guiding device 340.
The positioning element 320 is discharged prior to valve sewing section 310, and the positioning element 320 is provided with anchoring section 321 and clamping
Section 322, there are three bluff pieces 3221 for the tool of gripping section 322.It is provided with sliding connection structure 311 in the valve sewing section 310,
One end 3401 of the guiding device 340 is connected on the hole 3222 of 3221 bottom end of bluff piece, the guiding device 340 it is another
One end 3402 is connected in the anchoring section 321 after passing through in the sliding connection structure 311, and the valve sews section 310
It can be slided along the guiding device 340.It is with embodiment difference before, the proximal end of the valve sewing section 310 is configured with
Sealing element 370, when the valve bracket 300 is implanted, the sealing element 370 prevent blood by the valve sew section and
Gap between autologous tissue.Since the auxiliary leakproof of native leaflets acts on, the leaflet juncture area of native leaflets is easiest to produce
Raw reflux, as an implementation, as shown in Figure 6 b, the sealing element 370 is discontinuous banded structure, when the valve
When bracket 300 is implanted, the lower section of the bluff piece 3221 (3221a, 3221b, 3221c) corresponds to not connecting for the sealing element 370
Continuous place, the i.e. continuous intersection for locating corresponding native leaflets of sealing element, so targetedly partial sealing technology is ensuring to reduce
While perivalvular leakage effect, the diameter of delivery sheath is effectively reduced.
As fig. 6 c, the end of the bluff piece 3221 is arranged to hold together into the axis direction of the gripping section 322
Structure.Preferably, recess 3105 is provided on the outer profile of the valve sewing section 310, the valve sewing section 310 is released completely
After putting, the recess 3105 matches with the structure held together in the bluff piece 3221, and designing in this way is advantageous in that and facilitates positioning region
The contraposition and fixation of part and main body valve are conducive to be anchored and reduce perivalvular leakage.
As shown in fig 6d, alternatively embodiment, the valve sew and are provided with sliding connection structure in section 310
311, the guiding device 340 and the tie point of the positioning element 320 and the bluff piece 3221 are staggered cloth in the axial direction
It sets, the valve sewing section 310 can be slided along the guiding device 340.
Finally it should be noted that the foregoing is merely the preferred embodiments of the utility model, not to limit
The utility model processed, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc.,
It should be included within the scope of protection of this utility model.
Claims (17)
1. a kind of aortic valve stent of separate type release, which is characterized in that including valve sewing section, positioning element and artificial
Valve, the artificial valve are connected in the valve sewing section, and the valve sewing section and the positioning element are two
Individual member is simultaneously connected by guiding device, and the positioning element is discharged prior to valve sewing section, and the valve sews section
On be provided with sliding connection structure, one end of the guiding device is connected on the positioning element, the guiding device it is another
One end is connected on the positioning element after passing through in the sliding connection structure, and the valve sewing section can be led along described
Leading-in device sliding.
2. the aortic valve stent of separate type release as described in claim 1, which is characterized in that the valve sewing section
Proximal end is configured with sealing element.
3. the aortic valve stent of separate type release as claimed in claim 2, which is characterized in that the sealing element is not connect
Continuous banded structure.
4. the aortic valve stent of separate type release as described in claim 1, which is characterized in that the guiding device is soft
Property linear structure or banded structure.
5. the aortic valve stent of separate type release as described in claim 1, which is characterized in that the guiding device is located at
Between the positioning element and valve sewing section.
6. the aortic valve stent of separate type release as described in claim 1, which is characterized in that the valve sewing section is complete
After full release, the guiding device is straddled on the free edge of native leaflets.
7. the aortic valve stent of separate type release as claimed in claim 6, which is characterized in that the native leaflets are by institute
Guiding device is stated to ride and drag down.
8. the aortic valve stent of separate type as described in claim 1 release, which is characterized in that the valve sewing section with
The relative axial position of the positioning element is limited by the length of the guiding device.
9. the aortic valve stent of separate type as described in claim 1 release, which is characterized in that the valve sewing section with
The positioning element is located at the different location of delivery sheath after being compressed.
10. the aortic valve stent of separate type release as described in claim 1, which is characterized in that the positioning element is set
It is equipped with anchoring section and gripping section, the gripping section is connect with the anchoring section, one end of the guiding device is connected to the folder
It holds in section, the other end of the guiding device is connected in the anchoring section after passing through in the sliding connection structure, described
Valve sewing section can be slided by the sliding connection structure along the guiding device.
11. the aortic valve stent of separate type release as claimed in claim 10, which is characterized in that the gripping section has
Bluff piece, the end of the bluff piece are arranged to the structure held together into the axis direction of the gripping section, the valve sewing section
Be provided with recess on outer profile, after the valve sewing section discharge completely, the recess and the bluff piece it is interior hold together structure phase
Matching.
12. the aortic valve stent of separate type release as claimed in claim 10, which is characterized in that the knot that is slidably connected
Structure is located at the proximal part of valve sewing section, and the guiding device and the tie point for being anchored section are located at the anchoring section
Distal portions on.
13. the aortic valve stent of separate type release as claimed in claim 10, which is characterized in that the separate type release
Aortic valve stent further include auxiliary guiding device, it is described auxiliary guiding device one end be connected in the anchoring section,
The other end of the auxiliary guiding device is connected in the valve sewing section.
14. the aortic valve stent of separate type release as claimed in claim 10, which is characterized in that described to be anchored the remote of section
End is provided with fit structure, and the proximal end of the valve sewing section is provided with connection structure, when by compression loaded in delivery sheath
Shi Suoshu connection structure and the fit structure mutually constrain.
15. the aortic valve stent of separate type as claimed in claim 14 release, which is characterized in that the connection structure is
Bar, the fit structure be hole, when the separate type release aortic valve stent by compression loaded in the delivery sheath
When middle, the connection structure passes through the fit structure.
16. the aortic valve stent of separate type release as claimed in claim 15, which is characterized in that in the connection structure
On be provided with limit hole, when the separate type release aortic valve stent by compression loaded in the delivery sheath when,
The connection structure passes through the fit structure, and limiting wire passes through the limit hole.
17. the aortic valve stent of separate type as claimed in claim 14 release, which is characterized in that the connection structure is
Coil, the fit structure be hole, when the separate type release aortic valve stent by compression loaded in the conveying sheath
When in pipe, the connection structure passes through the fit structure, and limiting wire passes through the coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822100311.1U CN209548145U (en) | 2018-12-14 | 2018-12-14 | A kind of aortic valve stent of separate type release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822100311.1U CN209548145U (en) | 2018-12-14 | 2018-12-14 | A kind of aortic valve stent of separate type release |
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| Publication Number | Publication Date |
|---|---|
| CN209548145U true CN209548145U (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822100311.1U Active CN209548145U (en) | 2018-12-14 | 2018-12-14 | A kind of aortic valve stent of separate type release |
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| CN (1) | CN209548145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020119463A1 (en) * | 2018-12-14 | 2020-06-18 | 宁波健世生物科技有限公司 | Controlled release valve stent |
| WO2020119462A1 (en) * | 2018-12-14 | 2020-06-18 | 宁波健世生物科技有限公司 | Detachably released aortic valve stent |
-
2018
- 2018-12-14 CN CN201822100311.1U patent/CN209548145U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020119463A1 (en) * | 2018-12-14 | 2020-06-18 | 宁波健世生物科技有限公司 | Controlled release valve stent |
| WO2020119462A1 (en) * | 2018-12-14 | 2020-06-18 | 宁波健世生物科技有限公司 | Detachably released aortic valve stent |
| US11864994B2 (en) | 2018-12-14 | 2024-01-09 | Jenscare Scientific Co., Ltd. | Separately releasable aortic valve stent |
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Address after: Building 5, area B, 777 Binhai Fourth Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province, 315336 Patentee after: Ningbo Jianshi Technology Co.,Ltd. Address before: Building 5, area B, 777 Binhai Fourth Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province, 315336 Patentee before: NINGBO JENSCARE BIOTECHNOLOGY Co.,Ltd. |