A kind of liver inside door-vena systemica shunting bracket
Technical field
The present invention relates to field of medical technology, specially a kind of liver inside door-vena systemica shunts bracket.
Background technique
Currently, bracket used in TIPS art is divided into bare bracket and overlay film frame.Bare bracket is due to postoperative high speed blood flow
Stimulation causes false inner membrance to be formed, and easily causes runner restenosis;Overlay film frame can greatly prolong the patency of runner, but
Bracket easily influences portal venous flow after entering portal vein;And easily there is " nut cap " phenomenon in bracket both ends.Existing overlay film frame is uncomfortable
Close the needs that liver inside door-vena systemica precisely shunts.And the latus rectum inside overlay film frame in the prior art is fixed, in liver
Door-vena systemica needs the case where often adjusting intravenous flow rate to be difficult to meet, in consideration of it, it is proposed that a kind of liver inside door-vena systemica
Shunt bracket.
Summary of the invention
The purpose of the present invention is to provide a kind of liver inside door-vena systemicas to shunt bracket, to solve to mention in above-mentioned background technique
Overlay film frame out be not suitable for that liver inside door-vena systemica precisely shunts the problem of needs.
To achieve the above object, the invention provides the following technical scheme:
A kind of liver inside door-vena systemica shunting bracket, including interior overlay film in a tubular form, one end of the interior overlay film is expanded outwardly
Overlay film flaring, is closely fitted with one layer of outer metal mesh, one end of the outer metal mesh on the outer wall of the interior overlay film in being formed
It expands outwardly to form metal mesh flaring apterium, is flared apterium in the metal mesh and the junction of the interior overlay film flared end is set
There are several metal balls;
It is symmetrically arranged with two fixture blocks on the other end inner wall of the interior overlay film, adjusting group is equipped between two fixture blocks
Part, the interior grid for adjusting component and including outer grid and being embedded inside the outer grid.
Preferably, each fixture block offers square groove close to the side for adjusting component, in the square groove
Two sides inner wall on be equipped with one group of arc metal plate, two groups of arc metal plates are symmetrical, and arc metal plate described in every group
The quantity being equipped with is two.
Preferably, card slot there are two radially symmetrically being opened up on the side wall of the outer grid, the inner end of each card slot
Convex block is equipped on wall.
Preferably, the card slot and the fixture block are mating, and the convex block and the square groove are mating, and each institute
Convex block is stated to be connected between two arc metal plates ipsilateral with it.
Preferably, the surface of the outer grid equidistantly offers several fan-shaped through slots in a ring, in the outer grid
Inside offers the frame trough with the interior grid rotation connection.
Preferably, the surface of the interior grid be equipped with several fan shape baffles, the number and shape of the fan shape baffle with
The sector through slot is corresponding.
Preferably, it is also coaxially connected with rotation axis at the center of the interior grid, is radially offered in the rotation axis
By its completely through straight trough mouth.
Preferably, the quantity of the metal ball is at least four, and equidistantly distributed in a ring.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention is by expanding one end (portal vein end) opening portion of overlay film frame in " horn mouth " sample, expansion section
Divide and four metal marker points used to demarcate as overlay film part and metal mesh part, fits closely bracket with portal vein tube wall,
The influence of blood flow of venous shunt distal end on the door is utmostly reduced, the regeneration of bracket inner tissue is reduced, prevents stent occlusion and " lid
Cap " (the vena hepatica end or portal vein end of bracket are covered by vascular wall) phenomenon, and bracket can be accurately positioned at DSA, it is suitble to
Accurate liver inside door-vena systemica bypass of accurate liver inside door-left branch of vena systemica bypass, especially trans-portal vein.
2, the present invention increase quick detachable adjusting component by the other end to overlay film frame, by adjust fan shape baffle with
The overlapping area of fan-shaped through slot adjusts the latus rectum of overlay film frame, and then adjusts flow velocity, simple to operate, in some special feelings
No replacement is required when needing that the flow and flow velocity of overlay film frame is adjusted under shape overlay film frame, significantly to the physical impairment of patient
It reduces.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram at visual angle of the present invention;
Fig. 2 is the overall structure diagram at another visual angle in the present invention;
Fig. 3 is the structural schematic diagram of interior overlay film in the present invention;
Fig. 4 is the structure enlargement diagram in Fig. 3 of the present invention at A;
Fig. 5 is the structural schematic diagram that component is adjusted in the present invention;
Fig. 6 is the structural schematic diagram of China and foreign countries' grid of the present invention;
Fig. 7 is the structural schematic diagram of interior grid in the present invention.
In figure: 1, interior overlay film;10, interior overlay film flaring;11, fixture block;12, square groove;13, arc metal plate;130, snap-gauge;
1300, sliding slot;131, slide lock rationed marketing;132, push handle;2, outer metal mesh;20, metal mesh is flared apterium;21, metal ball;3, it adjusts
Save component;30, outer grid;300, fan-shaped through slot;301, card slot;302, convex block;303, frame trough;31, interior grid;310, fan-shaped
Baffle;311, rotation axis;312, straight trough mouth.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Fig. 1-7 is please referred to, the present invention provides a kind of technical solution:
A kind of liver inside door-vena systemica shunting bracket, one end including overlay film 1 in interior overlay film 1 in a tubular form expands outwardly shape
At interior overlay film flaring 10, it is closely fitted with one layer of outer metal mesh 2 on the outer wall of interior overlay film 1, one end of outer metal mesh 2 is to extending out
It opens and forms metal mesh flaring apterium 20, be flared the junction of 10 ends equipped with several gold in metal mesh flaring apterium 20 and interior overlay film
Belong to ball 21;
Specifically, the quantity of metal ball 21 is at least four, it is preferably four in the present embodiment, and equidistant point in a ring
Cloth demarcates with outer 2 part of metal mesh as interior overlay film 1, the boundary of overlay film frame can be clearly told under X-ray line.
In addition, the angle that overlay film flaring 10 expands outwardly is 120 °, fit closely bracket with portal vein tube wall, it is maximum
Degree reduces the influence of blood flow of venous shunt distal end on the door.
In order to guarantee to need under some special cases that the flow and flow velocity of overlay film frame is adjusted, the present inventor exists
Increase adjusting component 3 in overlay film frame newly, as a kind of preferred embodiment, as shown in fig. 3 to 7, the other end inner wall of interior overlay film 1
On be symmetrically arranged with two fixture blocks 11, be equipped between two fixture blocks 11 and adjust component 3, adjusting component 3 includes outer grid 30 and embedding
The interior grid 31 being located inside outer grid 30.
In the present embodiment, each fixture block 11 offers square groove 12 close to the side for adjusting component 3, in the two sides of square groove 12
One group of arc metal plate 13 is equipped on inner wall, two groups of arc metal plates 13 are symmetrical, and every group of arc metal plate 13 is equipped with
Quantity be two, radially symmetrically open up that there are two card slot 301, the inner end walls of each card slot 301 on the side wall of outer grid 30
On be equipped with convex block 302, card slot 301 and fixture block 11 are mating, and convex block 302 and square groove 12 are mating, and each convex block 302
It is connected between two arc metal plates 13 ipsilateral with it, by 301 sets of card slot on outer 30 side wall of grid in fixture block 11
Outside, while convex block 302 is embedded between the arc metal plate 13 on 12 inner wall of square groove, in arc metal plate 13 itself when being caught in
Elasticity under so that its is generated deformation, convex block 302 is crossed arc metal plate 13 and is blocked in-between, is formed and being consolidated to adjusting component 3
It is fixed, it can easy removal when not needing.
Further, the surface of outer grid 30 equidistantly offers several fan-shaped through slots 300 in a ring, in outer grid 30
Inside offers the frame trough 303 with the rotation connection of interior grid 31, and the surface of interior grid 31 is equipped with several fan shape baffles 310, fan
The number and shape of shape baffle 310 are corresponding with fan-shaped through slot 300, rotated with one heart in frame trough 303 by interior grid 31,
The overlapping area of fan shape baffle 310 and fan-shaped through slot 300 is adjusted to adjust the latus rectum of overlay film frame, and then adjusts flow velocity.
In addition to this, it is also coaxially connected with rotation axis 311 at the center of interior grid 31, is radially opened up in rotation axis 311
Have by its completely through straight trough mouth 312, by using elongated hook catch on straight trough mouth 312 rotate, adjustable interior grid
31 rotations catch on straight trough mouth 312 and pull out and can take apart adjusting component 3.
The liver inside door of the present embodiment-vena systemica shunts bracket when in use, and overlay film frame is integrally implanted to vein blood vessel
In wall, selection as needed, which is packed into or is not packed into, adjusts component 3, when needing to be packed into, will adjust component 3 in advance and be tucked into interior cover
It is set to generate deformation in the tube wall of 1 one end of film, when being caught under the elasticity of arc metal plate 13 itself, convex block 302 crosses arc
Sheet metal 13 simultaneously blocks in-between, forms the fixation to component 3 is adjusted, catches on straight trough mouth 312 by elongated hook and rotate, can
It is rotated with adjusting interior grid 31, to adjust the overlapping area of fan shape baffle 310 and fan-shaped through slot 300 to adjust overlay film frame
Latus rectum, and then adjust flow velocity, without using when can catch on straight trough mouth 312 by elongated hook and pull out and can will adjust component
3 take apart.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, described in the above embodiment and specification is only the present invention
Preference, be not intended to limit the invention, without departing from the spirit and scope of the present invention, the present invention also has various
Changes and improvements, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by institute
Attached claims and its equivalent thereof.