A kind of through conduit conveying aortic valve valve deviceTechnical field
This utility model relates to medical instruments field, particularly relates to a kind of aortic valve valve device through conduit conveying.
Background technology
Along with increasing the weight of of aged tendency of population, senile valvular heart disease and the valve pathological changes caused after coronary heart disease, myocardial infarction are also increasingly common.Surgical operation and the operative treatment such as Prosthetic valve replacement or valve forming are the radical cure methods of valvular heart disease, but for some advanced ages, multiple complication or the patient having surgery open chest surgery history, the mortality rate of surgery open chest surgery is significantly high.In recent years, along with the progress of interventional therapeutic technique, through this epoch-making technology of conduit artificial valve, intervention operation is pushed to technology summit, and has attempted all deficiencies solving surgery valve replacement.2002, the success that first case is performed the operation through conduit artificial valve replacement, indicate that this revolutionary interventional medicine technology has actually entered feasibility stage, through the development of 10 years, had more than 10 ten thousand people by this reconstruction cardiac function, it is thus achieved that new life.
But existing aortic valve valve device or recovery can be discharged；Or accurate positioning but can not reclaim；Or recovery and accurate positioning can be discharged, but indication is limited.
Utility model content
The purpose of this utility model is to provide a kind of aortic valve valve device through conduit conveying, it is for implantation in the original position aortic valve causing pathological changes because of aortic stenosis or incompetence, to solve aortic valve valve device accurate positioning and once release with regard to irretrievable problem；Further, solve to adapt to the problem of various disease conditions, such as the aortic stenosis of severe calcification, independent aortic stenosis or incompetence and two lobe problems.
This utility model provides a kind of aortic valve valve device through conduit conveying, and described aortic valve valve device includes: support framework；It is fixed on the leaflet inside described support framework mid portion；And fix and the shirt rim fixing with described leaflet along described support framework inner peripheral；Wherein, the upper end of described support framework forms the upper bell-mouth structure of air in three lobed formulas；Bell-mouth structure of air end has that three of the loading for described support framework are circular connects pawls on described；The thorn-like the exposed location bar that outside the described mid portion of described support framework, the direction, bottom of oriented described support framework extends；There is the lower bell-mouth structure of air expanded outwardly for reducing perivalvular leakage the bottom of described support framework.
Selectively, the material of described support framework is memorial alloy, for instance for nickel-titanium alloy material；Described mid portion is vertical section, and the extent of opening of described lower bell-mouth structure of air is less than the extent of opening of described upper bell-mouth structure of air.
Selectively, described support framework is the network that the grid cell assumed diamond in shape is constituted；And respectively 1 ° to 15 ° of the inclination angle of the central axis of the end described support framework of deviation of described upper bell-mouth structure of air and lower bell-mouth structure of air.
Selectively, the described circular center connecting pawl be circular or square through hole or without hole shape, described circular connection pawl is connected by short connecting rod with upper bell-mouth structure of air.
Selectively, the root position of described thorn-like location bar is 10mm to 25mm to the bottom distance of described support framework.
Selectively, described thorn-like location bar is distributed along described support framework even circumferential, and quantity is 3 to 12.
Selectively, the length of described thorn-like location bar is 4mm to 15mm；The width of thorn-like location bar is 0.3mm to 1mm.
Selectively, the circle diameter of the circumscribed circle of described thorn-like location bar is more than described support framework mid portion vertical section diameter 3mm to 9mm.
Selectively, described thorn-like location bar can be integral structure or split structure with support framework, and integral structure adopts cut to form, and split structure adopts laser weld to form.
Selectively, the lower bell-mouth structure of air height of the expansion of described support framework bottom is 3mm to 8mm, and its diameter is more than described support framework mid portion vertical section 3mm to 6mm.
Selectively, the mid portion of described support framework is connected to each other by short connecting rod with the upper bell-mouth structure of air of described support framework.
Selectively, described short connecting rod length is 1.5mm to 4mm, and width is 0.25mm to 1mm.
Selectively, the short connecting rod adopting left and right indent between the adjacent described grid cell of described support framework connects.
Selectively, the minimum widith of the short connecting rod of described left and right indent is 0.25mm to 0.5mm.
Selectively, the short connecting rod of described left and right indent is the concave inward structure that formed of two semicircles in left and right or a bit of straightway adds the concave inward structure that left and right circular arc is formed.
Selectively, the material of described leaflet is Cor Sus domestica bag, bovine pericardium, Cor Equi bag or macromolecular material politef.
Selectively, the material of described shirt rim is Cor Sus domestica bag, bovine pericardium, Cor Equi bag, macromolecular material politef or woven dacron.
Advantage of the present utility model includes by the supporting that framework upper end is arranged to bell-mouth structure of air of aortic valve valve, the end of bell-mouth structure of air has three circular to connect pawls, it is achieved that the loading of aortic valve valve device and recovery；By supporting the thorn-like location bar that the mid portion of framework exposes downwards, it is achieved that being accurately positioned of aortic valve valve device so that operation process is more safe and reliable.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of aortic valve valve device of the present utility model；
Fig. 2 is the top view of a kind of aortic valve valve device of the present utility model；
Fig. 3 is the expansion schematic diagram of a kind of aortic valve valve device of the present utility model；
Fig. 4 is the expansion schematic diagram of a kind of aortic valve valve device thorn-like of the present utility model location bar；
Fig. 5 is that aortic valve valve device of the present utility model loads the schematic diagram to induction system；
Fig. 6 is the schematic diagram of aortic valve valve device thorn-like of the present utility model location bar release；
Fig. 7 is aortic valve valve device thorn-like of the present utility model location bar and the schematic diagram supporting the release of framework bottom；
Fig. 8 is that aortic valve valve device of the present utility model discharges schematic diagram completely；
Fig. 9 is that aortic valve valve device of the present utility model positions bar location schematic diagram at cardiac position thorn-like；
Figure 10 is that aortic valve valve device of the present utility model positions bar and location, support bottom schematic diagram at cardiac position thorn-like；
Figure 11 is that aortic valve valve device of the present utility model discharges schematic diagram completely at cardiac position；
Detailed description of the invention
A kind of aortic valve valve device through conduit conveying of the present utility model is for implantation in the original position aortic valve causing pathological changes because of aortic stenosis or incompetence, to solve aortic valve valve device accurate positioning and once release with regard to irretrievable problem；The problem additionally also attempting to solve to adapt to various disease conditions, such as the aortic stenosis of severe calcification, independent aortic stenosis or incompetence and two lobe problems.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
A kind of aortic valve valve device 100 as shown in Fig. 1 to Fig. 4, for implantation in the original position aortic valve causing pathological changes because of aortic stenosis or incompetence, including: support framework, it is fixed on the leaflet 104 inside described support framework mid portion, and fixes along described support framework inner peripheral and the shirt rim 102 fixing with described leaflet.Furtherly, shirt rim 102 all around becomes a circle along supporting framework, and fixes by suture；Leaflet 104 is three (refer to Fig. 2), is sewn in support framework mid portion stitching fixing with shirt rim 102.
Described support framework includes: formed in the upper end of described support framework in the upper bell-mouth structure of air 105 of three lobed formulas, bell-mouth structure of air end has that three of the loading for described support framework are circular connects pawls 106 on described；The mid portion of described support framework, the thorn-like the exposed location bar 103 that outside it, direction, bottom of oriented described support framework extends；It is positioned at the lower bell-mouth structure of air 101 expanded outwardly for reducing perivalvular leakage of the bottom of described support framework.(refer to Fig. 1).
The material of described support framework can be memorial alloy, for instance for nickel-titanium alloy material.
Described mid portion is vertical section, and the extent of opening of described lower bell-mouth structure of air 101 is less than the extent of opening of described upper bell-mouth structure of air 105.
Described support framework is the network that the grid cell assumed diamond in shape is constituted；The short connecting rod adopting left and right indent between the adjacent described grid cell of described support framework connects.Selectively, the minimum widith of the short connecting rod of described left and right indent is 0.25mm to 0.5mm.Selectively, the short connecting rod of described left and right indent is the concave inward structure that formed of two semicircles in left and right or a bit of straightway adds the concave inward structure that left and right circular arc is formed.
The end of described upper bell-mouth structure of air and lower bell-mouth structure of air deviates respectively 1 ° to 15 ° of the inclination angle of the central axis of described support framework.Lower bell-mouth structure of air 101 and the mid portion supporting framework seamlessly transit；The mid portion supporting framework seamlessly transits with upper bell-mouth structure of air 105；The mid portion supporting framework is connected (refer to Fig. 4) by short connecting rod 107 with upper bell-mouth structure of air 105, and described short connecting rod length is 1.5mm to 4mm, and width is 0.25mm to 1mm.Support and between the grid cell assumed diamond in shape of framework, adopt short connecting rod 108 to connect (refer to Fig. 4)；Upper bell-mouth structure of air 105 mid portion assumes diamond in shape expansion, and upper bell-mouth structure of air 105 is uniformly distributed in support framework surrounding；The circular pawl 106 that connects is connected by short connecting rod with upper bell-mouth structure of air 105, and the circular pawl 106 that connects be hollow or solid construction, and furtherly, the center of described circle connection pawl 106 is circle or square through hole or without hole shape.
Thorn-like location bar 103 is positioned at support framework mid portion, is circularly and evenly distributed in supporting framework mid portion, and the lower bell-mouth structure of air 101 supporting framework is pointed in the direction of thorn；The root position of described thorn-like location bar is 10mm to 25mm to the bottom distance of described support framework.Described thorn-like location bar is distributed along described support framework even circumferential, and quantity is 3 to 12.Selectively, the length of described thorn-like location bar is 4mm to 15mm；The width of thorn-like location bar is 0.3mm to 1mm.The circle diameter of the circumscribed circle of described thorn-like location bar is more than described support framework mid portion vertical section diameter 3mm to 9mm.Described thorn-like location bar can be integral structure or split structure with support framework, and integral structure adopts cut to form, and split structure adopts laser weld to form.
Lower bell-mouth structure of air height is 3mm to 8mm, and its external diameter of a circle is more than described support framework mid portion vertical section 3mm to 6mm.
The material of described leaflet and the material of described shirt rim can respectively Cor Sus domestica bag, bovine pericardium, Cor Equi bag or macromolecular material politef.
By the supporting that framework upper end is arranged to bell-mouth structure of air of aortic valve valve, the end of bell-mouth structure of air has three circular to connect pawls, it is achieved that the loading of aortic valve valve device and recovery；By supporting the thorn-like location bar that the mid portion of framework exposes downwards, it is achieved that being accurately positioned of aortic valve valve device so that operation process is more safe and reliable.
One described in this utility model embodiment carries aortic valve valve device work process as follows through conduit:
First described aortic valve valve device 100 is shunk by certain device the head end 201 being loaded into induction system 200 and loads in sheath 202 (refer to Fig. 5), by handle 203, the loading sheath 202 of induction system 200 is moved rearwards by, the thorn-like of described aortic valve valve device 100 is positioned bar 103 and discharges (refer to Fig. 6 and Fig. 9), now due to the characteristic of the memorial alloy of described aortic valve valve device 100 material self, thorn-like location bar 103 automatic expansion, slowly push downwards induction system 200, thorn-like location bar 103 is made to touch human body natural's leaflet tissue 300, stop pushing induction system 200.Again through handle 203, the head end 201 of induction system 200 is moved forward, the lower bell-mouth structure of air 101 making described aortic valve valve device 100 discharges from the head end 201 of induction system 200, characteristic due to the memorial alloy of described aortic valve valve device 100 material self, lower bell-mouth structure of air 101 automatic expansion (refer to Fig. 7), human body natural's leaflet tissue 300 is strutted, now human body natural's leaflet tissue 300 is between the lower bell-mouth structure of air 101 of described aortic valve valve device 100 and thorn-like location bar 103 (refer to Figure 10), described aortic valve valve device 100 completes to be accurately positioned.Loading sheath 202 is continued to be moved rearwards by by the handle 203 again by induction system 200, the upper bell-mouth structure of air 105 of described aortic valve valve device 100 and the circular pawl 106 that connects are discharged (refer to Fig. 8) from loading sheath 202, characteristic due to the memorial alloy of self of described aortic valve valve device 100 material, upper bell-mouth structure of air 105 automatic expansion is to maximum, with blood vessel wall laminating fixing (refer to Figure 11), last induction system 200 is connected pawl 106 with circle and departs from, withdraw from induction system 200, described aortic valve valve device 100 has been implanted.
Embodiment of above is merely to illustrate this utility model; and be not limitation of the utility model; those of ordinary skill about technical field; when without departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical schemes fall within category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.