CN209136986U - The loading attachment of implant - Google Patents
The loading attachment of implant Download PDFInfo
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- CN209136986U CN209136986U CN201821282090.8U CN201821282090U CN209136986U CN 209136986 U CN209136986 U CN 209136986U CN 201821282090 U CN201821282090 U CN 201821282090U CN 209136986 U CN209136986 U CN 209136986U
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Abstract
The utility model discloses a kind of loading attachment of implant, the loading attachment includes: pilot cap and guide seat, and pilot cap is detachably connected with guide seat；Pilot cap has first inner chamber, and first inner chamber penetrates through pilot cap, and at least one section of diameter gradually becomes smaller in first inner chamber；Guide seat has second inner chamber, second inner chamber penetrates through guide seat, and in second inner chamber at least one section for diameter it is gradually smaller tiltedly straight structure, tiltedly straight structure includes multiple successively oblique section in inner cavity and inner cavity straight section arranged in a crossed manner, the cavity wall of the oblique section in inner cavity and the axis of guide seat are at an acute angle, and the cavity wall of inner cavity straight section and the axis of guide seat are parallel.The loading attachment of the utility model can decompose the resistance to compression pression being subject to when implant loads, and avoid implant impaired when loading, especially prevent the inflow road tip of implant when the tool pressure of being loaded is held, bend and cause structural failure；And it is easy to operate, efficiency of loading is high, has universality to the implant of different size.
Description
Technical field
The utility model relates to the field of medical instrument technology, more particularly, to a kind of loading attachment of implant.
Background technique
It is a kind of completely new valve replacement technology through conduit aorta petal implantation, principle is to be loaded into valve prosthesis
In transportation system, it is transported to aortic root through conduit, bracket release can ensure that valve is fixed at aortic valvular ring, is replaced
For the former valve of functional deterioration, improve heart of patient function.This technology can not open chest, heart beating
In the case of treat aorta petal valvular heart disease, surgery throacotomy, cardiac arrest huge wound caused by patient before eliminating.
This technology needs the diameter that bracket is compressed to very little to be loaded into the conduit of conveyer.It is filled using the tool of loading
When carrying valve prosthesis, primary compression is done usually using pilot cap and guide seat cooperation, then with the inner cavity of guide seat to the stream of bracket
It takes part in Taoism and does further compression, until valve prosthesis is held by complete pressure.For traditional loading tool, the input end of guide seat inner cavity
Transition arc opening it is larger, the case where being easy to produce " wedge angle touches wedge angle ", i.e., bracket flow into road and guide seat inner cavity into
Mouth end formation obtuse angle, needs to overcome very big resistance to do and significantly compresses, and bracket is easy because compression is unevenly or local
It surprisingly bends and causes riding, damage or valve damaged, lead to loading personnel's operating difficulties, efficiency of loading is low, finally leads
Cause the function of bracket or valve defective or service life reduce, in some instances it may even be possible to can not normally be implanted into work, meanwhile, operation when
Between too long will increase operation risk.In addition, this kind of loading tool is only applicable to the bracket of certain single specification, cost of manufacture is high, and
Structure is complicated, and operating process is cumbersome.
Therefore, be badly in need of it is a kind of it is easy to operate, efficiency of loading is high, loads that success rate is big, have to the bracket of different size general
The loading attachment of adaptive.
Utility model content
The purpose of this utility model is to provide a kind of loading attachments, impaired when loading to avoid bracket, especially anti-
Only inflow road bending when the tool pressure of being loaded is held of bracket, and caused by riding, damage or breakage.
In order to achieve the above object, the utility model provides a kind of loading attachment of implant, comprising: pilot cap and draws
Guide bracket, the pilot cap are detachably connected with the guide seat；
The pilot cap has first inner chamber, and the first inner chamber penetrates through the pilot cap, and in the first inner chamber extremely
Few one section of diameter gradually becomes smaller；
The guide seat has second inner chamber, and the second inner chamber penetrates through the guide seat, and in the second inner chamber extremely
Few one section is the gradually smaller tiltedly straight structure of diameter, the tiltedly straight structure include multiple successively oblique sections in inner cavity arranged in a crossed manner with it is interior
The axis of chamber straight section, the cavity wall and the guide seat of the oblique section in inner cavity is at an acute angle, and the cavity wall of the inner cavity straight section is drawn with described
The axis of guide bracket is parallel.
Optionally, the pilot cap includes outlet portion, compression unit and inlet portion.
Optionally, the first inner chamber includes interconnected the first compressional zone and the second compressional zone, first compression
The arrival end diameter in area is greater than the outlet end diameter of second compressional zone.
Optionally, the bus of the inner surface of second compressional zone is curve.
Optionally, the guide seat includes guide post, linkage section and pedestal, and the guide post is arranged by the linkage section
On the base.
Optionally, the diameter of one end that the guide post is connected with the pedestal is greater than the diameter of the other end.
Optionally, inside the linkage section, around the outer surface of the guide post, setting is fluted.
Optionally, the second inner chamber includes interconnected third compressional zone and the 4th compressional zone, the third compression
Area is the tiltedly straight structure, and the arrival end diameter of the third compressional zone is greater than the outlet end diameter of the 4th compressional zone.
Optionally, the tiltedly straight structure is the integral structure of the second inner chamber or is arranged in the second inner chamber
Oblique straight member.
Optionally, the pilot cap by static friction connection type or snaps connection mode and is set in the guide seat
On.
In the loading attachment of implant provided by the utility model, the second inner chamber of the guide seat is penetrated through at least
One section is the gradually smaller tiltedly straight structure of diameter, and the inflow road of implant is when entering the tiltedly straight structure, first in radially outward force
Under the action of enter diameter be slightly less than flow into road opening diameter the oblique section in inner cavity, then sequentially enter inner cavity straight section arranged in a crossed manner
With the oblique section in inner cavity, the angle of the wedge angle flowed into and inner cavity straight section is almost nil, so implant is several in the movement of inner cavity straight section
Not by resistance, when entering the oblique section in inner cavity, although every section all can by resistance, since the compressed degree of bracket is small,
It can accomplish to seamlessly transit, and then using the oblique straight structure, can effectively decompose resistance, avoid compression uneven or local unexpected curved
It rolls over and causes the inclination of implant, damage；And the oblique straight structure uses the gradually smaller design of multilayer internal diameter, is suitable for difference
The implant of specification.
Detailed description of the invention
Fig. 1 is the process schematic that existing loading tool pressure holds valve prosthesis；
Fig. 2 is the schematic perspective view that cover is guided in the utility model loading attachment；
Fig. 3 is the side sectional view that cover is guided in the utility model loading attachment；
Fig. 4 is the schematic perspective view that seating portion is guided in the utility model loading attachment；
Fig. 5 is the side sectional view that seating portion is guided in the utility model loading attachment；
Fig. 6 is the detail drawing that the side sectional view of seating portion is guided in the utility model loading attachment；
Fig. 7-8 is the side sectional view that the second compressional zone T21 of seating portion is guided in the utility model loading attachment；
Fig. 9 is the structural schematic diagram of implant in an embodiment of the present invention；
Figure 10-11 is that the loading attachment of the utility model loads the process schematic of implant；
Wherein, 1- pilot cap, 11- outlet portion, 12- compression unit, 13- inlet portion, 2,2 '-guide seats, 21- guide post,
22- linkage section, 23- pedestal, 3,3 '-implants, 31- efferent tract, 32,3 ' 2- flow into road, 33- hangers, 4- transportation system, 41-
Inner tube, 42- fixed ear, 43- sheath, the compressional zone T '-, the main compressional zone T ' 1-, T2 '-auxiliary compression area, T1- first inner chamber,
The first compressional zone T11-, the second compressional zone T12-, T2- second inner chamber, T21- third compressional zone, the 4th compressional zone T22-, aa- pressure
The input end of contracting area T ', the input end of the first compressional zone AA- T11, the input end of AA '-third compressional zone T21, A1, A2, A3,
The oblique section in the inner cavity A4, A5-, the outlet end of the compressional zone bb- T ', the outlet end of the second compressional zone BB- T12, four compressional zone BB '-the
The outlet end of T22, the inner cavity B1, B2, B3, B4- straight section, F- resistance, S- groove.
Specific embodiment
Inventor studies discovery: as shown in Figure 1, holding implant 3 ' (such as valve prosthesis) using existing loading tool pressure
When, the opening of the compressional zone T ' (i.e. the inner cavity of guide seat 2 ') of guide seat 2 ' is larger, the case where being easy to produce " wedge angle touches wedge angle ",
The circular arc that inner cavity in the tip and guide seat 2 ' in road 3 ' 2 is flowed into implant 3 ' forms obtuse angle, and resistance to compression pression F is very big, and flows
It takes part in Taoism and 3 ' 2 needs compressed ratio also very big (D → d) under the interference of resistance F.In this way, being easy because compression is uneven
Or part surprisingly bends and causes riding, damage or the valve of implant 3 ' damaged.
Based on this, as illustrated in figs. 2 through 8, the utility model proposes a kind of loading attachments of implant, comprising: pilot cap 1 and
Guide seat 2, pilot cap 1 are detachably connected with guide seat 2；
There is pilot cap 1 first inner chamber T1, first inner chamber T1 to penetrate through pilot cap 1, and at least one section in first inner chamber T1
Diameter gradually becomes smaller；
Guide seat 2 have second inner chamber T2, second inner chamber T2 penetrate through guide seat 2, and in second inner chamber T2 at least one section be
The gradually smaller tiltedly straight structure of diameter, this tiltedly straight structure include multiple successively oblique section A in inner cavity arranged in a crossed manner (A1, A2,
A3 ...) with inner cavity straight section B (B1, B2, B3 ...), the cavity wall of the oblique section A in inner cavity (A1, A2, A3 ...) and guide seat 2
Axis is (as shown in figure 8, the oblique section A2 in inner cavity and axis α at an acute angle) at an acute angle, the cavity wall of inner cavity straight section B (B1, B2, B3 ...) with
The axis of guide seat 2 is parallel.
In the loading attachment of the implant of the utility model, at least one section for penetrating through the second inner chamber T2 of guide seat 2 is
The gradually smaller tiltedly straight structure of diameter, the inflow road of implant is when entering the tiltedly straight structure, first in the effect of radially outward force
It is lower to be slightly less than the oblique section A (x) in inner cavity for flowing into road opening diameter into diameter, then sequentially enter inner cavity straight section Bx arranged in a crossed manner
With the oblique section A (x+1) in inner cavity, the angle of the wedge angle flowed into and inner cavity straight section B is almost nil, so implant is in inner cavity straight section B
Movement hardly by resistance, when entering the oblique section A in inner cavity, although every section all can be by resistance, since bracket is compressed
Degree it is small, can accomplish to seamlessly transit.Therefore, using the oblique straight structure, can effectively decompose resistance, avoid compression uneven or
Part surprisingly bends and causes riding, damage or the valve of implant damaged；And the oblique straight structure uses multilayer internal diameter
Gradually smaller design, the implant suitable for different size.Herein, the value range of x is the integer more than or equal to 1.
Specific embodiment of the present utility model is described in more detail below in conjunction with schematic diagram.It is retouched according to following
It states and claims, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing is all made of very simplification
Form and use non-accurate ratio, only to it is convenient, lucidly aid in illustrating the purpose of the utility model embodiment.
Specifically, as Figure 2-3, pilot cap 1 be funnel-shaped structure, including be sequentially connected outlet portion 11, compression unit
12 and inlet portion 13, and along 13 direction of inlet portion to 11 direction of outlet portion, the internal diameter of compression unit 12 gradually tapers up (first inner chamber
The diameter that T1 is located at the part of compression unit 12 gradually becomes smaller, i.e. the first compressional zone T11 and the second compressional zone T12 as shown in Fig. 3
Diameter gradually become smaller)；Outlet portion 11 is for the entrance of the inner tube 41 of transportation system 4 and the stream of implant 3 (such as valve bracket)
Engage in this profession 31 stretching, the inner surface of outlet portion 11 is the surfaces of revolution, and the bus of the surfaces of revolution is straight line；First inner chamber T1 is for being implanted into
First second compression of body 3；Pilot cap 1 is detachably connected by inlet portion 13 with guide seat 2.
Optionally, as shown in figure 9, implant 3 be valve bracket, including be sequentially connected inflow road 32, efferent tract 31 and
Hangers 33, implant 3 are loaded into transportation system 4 by loading attachment, are sent into a contracted state by the conduit of transportation system 4
It in vivo to target area, then discharges, is launched into state as shown in Figure 9.Making material of the utility model to valve bracket
It is not particularly limited, can be any one existing material of this field, optionally, valve is made using shape memory alloy material
Membrane support.
Wherein, implant 3 explains utility model as example using valve bracket, but valve bracket is not to implantation
The limitation of body 3.Valve bracket such as heart valve bracket, can be configured in and implant through conduit.Although the present embodiment is shown
A kind of geometry of common valve bracket, but the utility model is not limited to any specific valve bracket geometric form
Shape.
Specifically, as shown in figure 3, first inner chamber T1 includes at least the interconnected compression of the first compressional zone T11 and second
The diameter of outlet end BB of the diameter of area T12, the arrival end AA of the first compressional zone T11 greater than the second compressional zone T12, when loading,
First compressional zone T11 and the second compressional zone T12 carries out the first second compression, i.e. primary compression to implant 3.First compressional zone T11
The space defined with inner surface that the second compressional zone T12 is pilot cap 1, the inner surface are the surfaces of revolution, the bus of the surfaces of revolution
For straight line or curve, optionally, the bus of the inner surface of the second compressional zone T12 is curve, can be preferably kept in implant 3
The opening diameter of efferent tract 31.In addition, details are not described herein as shown in figure 3, first inner chamber T1 further includes other regions.
Optionally, inlet portion 13 can be divided into bonding pad and fixed area (not marking in figure), which is cylinder, in
The diameter of arrival end AA of the diameter equal to the first compressional zone T11；The fixed area is located at the arrival end of the bonding pad, the fixed area it is outer
Diameter is greater than the outer diameter of the bonding pad, and the internal diameter of the fixed area is equal to the internal diameter of the bonding pad.
As shown in Figure 4-8, guide seat 2 includes guide post 21, linkage section 22 and pedestal 23, and guide post 21 passes through linkage section
22 are arranged in guide seat 23, and second inner chamber T2 penetrates through guide seat 2, and in second inner chamber T2 at least one section gradually become for internal diameter
Small oblique straight structure.
As illustrated in figures 4-5, guide post 21 funnel-shaped is set on pedestal 23, and guide post 21 is connected with pedestal 23
The diameter of one end is greater than the diameter of the other end.Optionally, the range of the height ratio of the height and pilot cap 1 of guide post 21 is 0.6:
1~2:1.
Optionally, the linkage section 22 in guide seat 2 is cylinder, and the outer surface of linkage section 22 can be shiny surface, frosted
Face etc..Pilot cap 1 can be slided along the linkage section 22 of guide seat 2 towards the direction of pedestal 23, and pilot cap 1 can be rubbed by quiet
Wiping connection or the mode snapped connection are arranged and are fixed in guide seat 2.
In addition, fluted S is arranged around the outer surface of guide post 21 inside linkage section 22.As shown in Fig. 5-6, groove
S is arranged around the outer surface of guide post 21, and indent is in the inside of linkage section 22.The internal diameter of groove S is slightly larger than inflow road 32
Diameter be advisable.Optionally, the tail portion (i.e. 3 upstream of implant take part in Taoism the ends of 32 sides) of the internal diameter of groove S and implant 3
Diameter proportion is 1:1~2:1, and the width of groove S is 1~5mm.When compressing implant 3 using guide seat 2, accommodate groove S
The inflow road 32 of implant 3 can further decrease implant 3 and twist in compression process and inclined probability.
As seen in figs. 5-6, the second inner chamber T2 for penetrating through entire guide seat 2 can accommodate the inner tube 41 of transportation system 4, the
Two inner cavity T2 are used for the second second compression of implant 3, and when implant 3 loads, second inner chamber T2 can make the inflow of implant 3
32 precommpression of road facilitates the progress loaded.
For traditional loading tool, as shown in Figure 1, the compressional zone T ' that the inner cavity of guide seat 2 ' is formed is that bus is
The infundibulate of camber line is divided into auxiliary compression area T ' 2 and main compressional zone T ' 1, input end aa from input end aa to outlet end bb
Diameter dimension it is maximum, from auxiliary compression area T ' 2 to main compressional zone T ' 1, diameter dimension is gradually become smaller.Implant 3 ' is (as such as valve
Membrane support) inflow road 3 ' 2 into auxiliary compression area T ' 2 compressed when, flow into road 3 ' 2 wedge angle touch O point first,
It flows into road 3 ' 2 and is moved direction formation obtuse angle, and the inflow road 3 ' in implant 3 ' by the direction of the directed force F of internal chamber wall
2 need to be compressed to diameter d from diameter D under the interference of directed force F, and compression degree is big, in this case, it is easy to flow into road 3 ' 2
It is lost, causes to load failure.
And in the present invention, arrive the direction of guide post 21 along pedestal 23, second inner chamber T2 includes interconnected the
The diameter of three compressional zone T21 and the 4th compressional zone T22, the arrival end AA ' of third compressional zone T21 are greater than the 4th compressional zone T22's
The diameter of outlet end BB ', third compressional zone T21 are auxiliary compression area, and the 4th compressional zone T22 is main compressional zone.
As shown in figs 6-8, third compressional zone T21 is the gradually smaller tiltedly straight structure of diameter, and tiltedly straight structure includes multiple for this
The successively oblique section A in inner cavity arranged in a crossed manner (A1, A2, A3 ...) and inner cavity straight section B (B1, B2, B3 ...), the oblique section A in inner cavity (A1,
A2, A3 ...) it is entrance region, the axis of the cavity wall and guide seat 2 of the oblique section A in inner cavity (A1, A2, A3 ...) is at an acute angle, such as figure
Shown in 8, the axis α at an acute angle of the oblique section A2 in inner cavity and guide seat 2；The oblique section A in inner cavity forms round table-like inner cavity；Inner cavity straight section B
(B1, B2, B3 ...) is transition region, and the cavity wall of inner cavity straight section B (B1, B2, B3 ...) is parallel with the axis of guide seat 2, inner cavity
Oblique section B forms columned inner cavity.
When being compressed using second inner chamber T2 to implant 3, as Figure 7-8, firstly, user is to implant 3
The power F0 that road 32 applies radial direction is flowed into, third compressional zone T21 is made it into, is introduced into the oblique section A1 in inner cavity of entrance region, it is interior
The inlet diameter D of the oblique section A1 of chamber is slightly less than the opening diameter for flowing into road 32, so the power F0 very little for needing to apply；Secondly, flowing into
It after road 32 enters the oblique section A1 in inner cavity, is moved to inner cavity straight section B1, although being flowed into the diameter in road 32 by D mistake by resistance F
It crosses to d1, variable quantity is smaller, can accomplish to seamlessly transit；Again, after inflow road 32 enters inner cavity straight section B1, the point in road 32 is flowed into
The angle of angle and inner cavity straight section B1 are almost 0 °, so the movement of implant 3 is hardly by the dry of guide seat 2 in this section
It relates to；Hereafter, it flows into road 32 and enters back into the oblique section A2 in inner cavity, similarly, although the diameter for flowing into road 32 is pressed by d1 by resistance
It is reduced to the variable quantity very little of d2, can accomplish to seamlessly transit；Finally, flowing into road 32 enters back into B2 ..., until entering the 4th pressure
The arrival end of contracting area T22, the diameter for flowing into road 32 are compressed to d, and final implant 3 is fully compressed the sheath of transportation system 4
In pipe 43.
Generally speaking, the inflow road 32 of implant 3 is when entering third compressional zone T21, first radial external force F0's
Effect is lower to be slightly less than the oblique section Ax in inner cavity for flowing into 32 opening diameter of road into diameter, then sequentially enters Bx, A (x+1), B (x+
1) ... when entering inner cavity straight section B, the angle of the wedge angle and inner cavity straight section B that flow into road 32 is almost 0 °, so implant 3 exists
Interference of the movement of this section hardly by 2 inner cavity T of guide seat；When entering the oblique section A in inner cavity, although every section all can by resistance,
But since the compressed degree of implant is small, it can accomplish to seamlessly transit.Optionally, as shown in figure 8, the oblique section A in inner cavity and interior
The axial length of chamber straight section B is very short, it is easier to seamlessly transit.
Optionally, this tiltedly straight structure can also be fabricated to individually oblique in addition to being the integral structure on second inner chamber T2
Straight member, when use, are stuck in the second inner chamber T2 of guide seat 2, and outer wall and the third compressional zone T21 of the oblique straight member are closely pasted
It closes, inner wall is equipped with entrance region inner cavity oblique section A and transition region inner cavity straight section B.The implant 3 of different size can select different sizes
Oblique straight member.
In addition, the internal diameter of inlet portion 13 and the outer diameter of 2 middle connecting segment 22 of guide seat match in pilot cap 1, so that guidance
Lid 1 is removably set in guide seat 2, for example, pilot cap 1 static friction connection type or by way of snapping connection set
It is located in guide seat 2.As shown in Figure 10, when pilot cap 1 is set in guide seat 2, the inlet portion 13 of pilot cap 1 is just fastened on
On the linkage section 22 of guide seat 2.
Pilot cap 1 and guide seat 2 all can be by being suitable for the transparent of medical instrument in loading attachment described in the utility model
Plastic material is made.Other transparent or nontransparent material can certainly be used.Preferably, being filled using made of transparent material
It carries to be equipped with and helps the case where operator observes implant 3 and transportation system 4 inside it in loading process.
The process of implant is loaded in the following, also will be described in detail using above-mentioned loading attachment, in the following description, definition
It is proximal end close to one end of patient, one end far from patient is distal end.The specific of implant is loaded using above-mentioned loading attachment
Process is as follows:
S1, above-mentioned implant loading attachment and implant 3 to be loaded are provided, by 3 sets of implant outside guide seat 2, together
When pilot cap 1 is placed on outside implant 3, guide seat 2 is promoted to pilot cap 1, so that the efferent tract 33 of implant 3 is along first
The direction that the diameter of chamber T1 is gradually reduced passes through first inner chamber T1, carries out primary compression to implant 3；
S2, transportation system 4 is provided, transportation system 4 includes inner tube 41, the fixed ear 42 being arranged in inner tube 41, is set in
Sheath 43 outside inner tube 41, sheath 43 is proximally dropped back, and exposes inner tube 41 and fixed ear 42, mobile guide seat 2, so that interior
Pipe 41 passes through second inner chamber T2 along the direction that the internal diameter of the tiltedly straight structure is gradually increased, and guide seat 2 is further to pilot cap 1
It promotes, at this point, the hangers 33 of implant 3 is fixed in fixed ear 42；
S3, sheath 43 is distally advanced, implant 3 is held by part pressure into sheath 43；
S4, separation pilot cap 1 and guide seat 2, pilot cap 1 is moved to the near end, and exposes implant 3, and arrange implant
3；
S5, guide seat 2 adjusts to 180 degree, mobile guide seat 2 so that inner tube 41 along the tiltedly straight structure internal diameter gradually
Reduced direction passes through second inner chamber T2, meanwhile, it is distally advanced sheath 43, so that implant 3 is held by pressure into sheath 43；
S6, guide seat 2 is removed, by sheath 43 to distally continuing to promote, holds implant 3 into sheath 43 by complete pressure.
Referring to Figure 10-11, when implant 3 being loaded into transportation system 4 using the loading attachment of the utility model, firstly,
Step S1 is executed, primary compression is carried out to implant 3: implant 3 being set in outside guide seat 2, i.e., by the inflow road of implant 3
32 are placed in the groove S of guide seat 2, and implant 3 is set in outside guide post 21, meanwhile, pilot cap 1 is placed on outside implant 3；
Then guide seat 2 is promoted to pilot cap 1, so that implant 3 passes through the along the direction that the diameter of first inner chamber T1 is gradually reduced
One inner cavity T1, while pilot cap 1 is placed on outside guide seat 2, primary compression is carried out to implant 3.
In this process, the efferent tract 31 of implant 3 first sequentially enters the first compressional zone T11 and the second compressional zone T12,
After implant 3 enters the second compressional zone T12, the guide post 21 of guide seat 2 can make the end of efferent tract 31 keep suitable
Compression factor prevents efferent tract 31 from causing form deviations because compressing excessively, causes subsequent hangers 33 can not be with transportation system 4
Fixed ear 42 is well matched with.
Secondly, executing step S2, implant 3 is fixed in inner tube 41: transportation system 4 is provided, operation transportation system 4
Handle proximally drops back the sheath 43 of delivery system 4, exposes the fixed ear 42 in inner tube 41, and mobile guide seat 2, so that interior
Pipe 41 passes through second inner chamber along the direction (i.e. the direction of guide post 21 to pedestal 23) that the internal diameter of the tiltedly straight structure is gradually increased
T2；Then, guide seat 2 is promoted to pilot cap 1, pilot cap 1 can be engaged or fix with guide seat 2, at this time implant 3
Hangers 33 is pierced by from the outlet portion 11 of pilot cap 1, is fixed in fixed ear 42.
Optionally, as shown in figure 11, convey implant 3 transportation system 4 include handle (not shown), inner tube 41,
The fixed ear 42 being arranged in inner tube 41, the sheath 43 being set in outside inner tube 41 and the outer tube being connected with sheath 43 are (in figure not
Show), the outer tube is connected with the handle, and the handle controls the outer tube and only does movement in axial direction, and then described outer
Pipe can drive sheath 43 to axially move；Implant 3 is fixed in fixed ear 42 by hangers 33.
Again, step S3-S4 is executed, the tentatively pressure of implant 3 is held into sheath 43: first operating the handle of transportation system 4,
Sheath 43 is distally advanced, so that being held by part pressure into sheath 43 by the implant 3 of primary compression；Then, by pilot cap 1
It is separated with guide seat 2, exposes implant 3, and arrange implant 3.The structure (leaflet of such as valve bracket) of implant 3 is arranged,
The subsequent structural failure pressed and held to implant 3 can be reduced.
Finally, executing step S5-S6, the pressure completely of implant 3 is held into sheath 43: guide seat 2 is adjusted into 180 degree, and
Mobile guide seat 2, so that inner tube 41 is along the direction that the internal diameter of the tiltedly straight structure is gradually reduced, (i.e. pedestal 23 arrives guide post 21
Direction) pass through guide seat 2 second inner chamber T2 be then distally advanced sheath 43 so that implant 3 is held by pressure into sheath 43
In；Guide seat 2 is removed, the handle of transportation system 4 is operated, by sheath 43 to distally continuing to promote, holds implant 3 by complete pressure
Into in sheath 43.
As it can be seen that the process that above-mentioned loading attachment loads implant is more simple and effective.
In conclusion being penetrated through in the second of guide seat in implant loading attachment provided by the embodiment of the utility model
At least one section is the gradually smaller tiltedly straight structure of diameter in chamber, and the inflow road of implant exists first when entering the tiltedly straight structure
Enter diameter under the action of radially outward force and be slightly less than the oblique section in inner cavity for flowing into road opening diameter, then sequentially enters arranged in a crossed manner
Inner cavity straight section and the oblique section in inner cavity, the angle of the wedge angle flowed into and inner cavity straight section is almost nil, so implant is in inner cavity straight section
Movement hardly by resistance, when entering the oblique section in inner cavity, although every section all can be by resistance, since bracket is compressed
Degree is small, can accomplish to seamlessly transit, and then using the oblique straight structure, can effectively decompose resistance, avoid compression uneven or office
Portion surprisingly bends and causes the inclination of implant, structural damage；Tiltedly straight structure uses the gradually smaller design of multilayer internal diameter for this, fits
Implant for different size；The operation of the loading attachment is relatively easy, and efficiency of loading is high.
The preferred embodiment that above are only the utility model, does not play the role of any restrictions to the utility model.
Any person of ordinary skill in the field, in the range of not departing from the technical solution of the utility model, to the utility model
The technical solution and technology contents of exposure make the variation such as any type of equivalent replacement or modification, belong to without departing from the utility model
Technical solution content, still fall within the protection scope of the utility model.
Claims (10)
1. a kind of loading attachment of implant characterized by comprising pilot cap and guide seat, the pilot cap are drawn with described
Guide bracket is detachably connected；
The pilot cap has first inner chamber, and the first inner chamber penetrates through the pilot cap, and at least one in the first inner chamber
The diameter of section gradually becomes smaller；
The guide seat has second inner chamber, and the second inner chamber penetrates through the guide seat, and at least one in the second inner chamber
Section is the gradually smaller tiltedly straight structure of diameter, and the tiltedly straight structure includes that the multiple oblique sections in inner cavity and inner cavity successively arranged in a crossed manner are straight
Section, the axis of the cavity wall and the guide seat of the oblique section in inner cavity is at an acute angle, the cavity wall and the guide seat of the inner cavity straight section
Axis it is parallel.
2. the loading attachment of implant as described in claim 1, which is characterized in that the pilot cap includes outlet portion, compression
Portion and inlet portion.
3. the loading attachment of implant as described in claim 1, which is characterized in that the first inner chamber includes interconnected
First compressional zone and the second compressional zone, the outlet end that the arrival end diameter of first compressional zone is greater than second compressional zone are straight
Diameter.
4. the loading attachment of implant as claimed in claim 3, which is characterized in that the mother of the inner surface of second compressional zone
Line is curve.
5. the loading attachment of implant as described in claim 1, which is characterized in that the guide seat includes guide post, connection
Section and pedestal, the guide post are arranged on the base by the linkage section.
6. the loading attachment of implant as claimed in claim 5, which is characterized in that the guide post is connected with the pedestal
The diameter of one end is greater than the diameter of the other end.
7. the loading attachment of implant as claimed in claim 5, which is characterized in that inside the linkage section, around described
The outer surface setting of guide post is fluted.
8. the loading attachment of implant as claimed in claim 1 or 3, which is characterized in that the second inner chamber includes mutually interconnecting
Logical third compressional zone and the 4th compressional zone, the third compressional zone are the tiltedly straight structure, the entrance of the third compressional zone
Diameter is held to be greater than the outlet end diameter of the 4th compressional zone.
9. the loading attachment of implant as claimed in claim 8, which is characterized in that the tiltedly straight structure is the second inner chamber
Integral structure or the oblique straight member that is arranged in the second inner chamber.
10. the loading attachment of implant as described in claim 1, which is characterized in that the pilot cap is connected by static friction
Mode snaps connection mode and is set in the guide seat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821282090.8U CN209136986U (en) | 2018-08-09 | 2018-08-09 | The loading attachment of implant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821282090.8U CN209136986U (en) | 2018-08-09 | 2018-08-09 | The loading attachment of implant |
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| CN209136986U true CN209136986U (en) | 2019-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029979A1 (en) * | 2018-08-09 | 2020-02-13 | 上海微创心通医疗科技有限公司 | Implant loading apparatus |
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2018
- 2018-08-09 CN CN201821282090.8U patent/CN209136986U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029979A1 (en) * | 2018-08-09 | 2020-02-13 | 上海微创心通医疗科技有限公司 | Implant loading apparatus |
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