CN209474705U

CN209474705U - Split type occluder for left auricle

Info

Publication number: CN209474705U
Application number: CN201820406075.3U
Authority: CN
Inventors: 邹喜兰
Original assignee: Yang Feng Yun
Current assignee: Yang Feng Yun
Priority date: 2017-05-08
Filing date: 2018-03-23
Publication date: 2019-10-11
Anticipated expiration: 2028-03-23
Also published as: CN209826841U; CN209437311U; CN209437310U; CN209474706U; CN209464033U; CN209464032U; CN209437312U

Abstract

Split type occluder for left auricle provided by the utility model includes that proximal end blocks disk, blocks the choked flow film in disk set on proximal end, the distal end fixation member and flexible connecting member for blocking disk distal side positioned at the proximal end and being connected with the distal end that the proximal end blocks disk.The distal end fixation member is formed by metal wire knitted, and proximal end blocks disk with proximal end with collecting and connect to form conical mesh radiant section, and distal openings and proximally turnup are formed with the hanging supporting section for surrounding the radiant section.Described flexible connecting member one end is connected with choked flow film, and the other end is limited in the proximal end skeleton or distal end skeleton that the proximal end blocks disk.The choked flow film of the occluder for left auricle, which repeatedly blocks after disk deforms with proximal end, all has roughly the same accumulation shape in the axial direction that proximal end blocks disk, conducive to the minimum gauge of mating sheath is optimized, and ruptures after avoiding choked flow film from repeatedly deforming.

Description

Split type occluder for left auricle

Technical field

The utility model relates to Cardiac interventional medical instruments field more particularly to split type occluder for left auricle.

Background technique

Auricular fibrillation is common arrhythmia cordis, will lead to heart blood circulation and has some setbacks, so that blood is easy to be frozen into Block can cause apoplexy if clot flows into brain.Percutaneous left atrial appendage occlusion art is excellent because wound is small, operating time is short, operation is simple etc. Point has become the first choice of prevention atrial fibrillation apoplexy.Percutaneous left atrial appendage occlusion art be established in patient's blood vessel using seal wire and sheath it is defeated Channel is sent, then the occluder for left auricle with shape memory function is placed in sheath, under the push of conveying wirerope, Zuo Xin Ear plugging device is transported to the predetermined position of left auricle of heart cavity along sheath, is then pushed out sheath release.Before being pushed out sheath, Occluder for left auricle is compressed in sheath, while being elongated axially along sheath, and plugging device can lose sheath after releasing sheath It constrains and restores to natural shape, to separate the blood flow circulation between left auricle of heart cavity and atrium sinistrum.

Split type occluder for left auricle usually has universality structure as shown in Figure 1, including distal end interconnected is consolidated Determine component 600 and proximal seal component 400, wherein distal end fixation member 600 is used to be implanted into the cavity 02 of left auricle of heart to protect It is motionless with respect to cavity 02 to hold entire plugging device, proximal seal component 400 is used to close the oral area of left auricle of heart, and blocking blood flow is from the left heart Room 01 flow into cavity 02 in and thrombus from cavity 02 enter atrium sinistrum 01.Proximal seal component 400 generally includes proximal end envelope Stifled disk and the choked flow film in proximal end closure disk.

Occluder for left auricle production detect process, occluder for left auricle usually repeatedly need to be drawn in and be pulled out sheath with It checks whether qualification, and determines therefrom that matched sheath specification.However, to be pulled to the limit in plugging device every time long for choked flow film Deformation when spending is random aggregation, leads to maximum radial dimension phase of the same instrument measured under multiple limit elongated condition Difference it is larger, can matched sheath specification correspondingly fluctuate in a big way.Also, the random aggregation of choked flow film causes instrument to exist When passing in and out sheath, the frictional force between choked flow film and proximal end closure disk is larger, and after repeatedly passing in and out sheath, choked flow film is easily broken, Lead to scrap of the product.Clinically, sheath is thicker, bigger to injury of blood vessel, under the premise of not influencing therapeutic effect, doctor's tendency Using thinner sheath.When using same sheath, maximum radial dimension of the occluder for left auricle under limit elongated condition is bigger, The sheath power out for needing doctor to apply is bigger, be easy to cause doctor's misoperation, cannot accurately discharge and block in left auricle of heart oral area Device, or because larger impulse force damages defect perienchyma, influence therapeutic effect.Therefore, it is necessary to which regular choked flow film is sealed in left auricle of heart Deformation when stifled device limit elongated condition, accurately by the occluder for left auricle of same specification in multiple limit elongated condition Maximum radial dimension limits in smaller range, and then optimizes the minimum gauge of suitable sheath and improve product qualification rate.

Utility model content

The purpose of this utility model is that overcoming the drawbacks described above of the prior art, provides and elongated shape along axial limit Under state, the split type occluder for left auricle of ordered deformation can occur for the choked flow film included.

The split type occluder for left auricle includes blocking disk including proximal end, blocks the choked flow in disk set on the proximal end Film, and the distal end fixation member for blocking disk distal side positioned at the proximal end and being connected with the distal end that the proximal end blocks disk.It is described Distal end fixation member is formed by metal wire knitted, and its proximal end blocks disk with proximal end with collecting and connect to form conical mesh radiation Section, distal openings and proximally turnup are formed with the hanging supporting section for surrounding the radiant section.The periphery of the choked flow film and institute It states proximal end closure disk to be connected, and disk is blocked by the proximal end and is limited.The split type occluder for left auricle further includes flexible connection Part, described flexible connecting member one end are connected with the choked flow film, the other end be limited in the proximal end block disk proximal end skeleton or Distal end skeleton.

In one embodiment, the other end of the flexible connecting member is by being wrapped in the proximal end skeleton or distal end skeleton And it is limited.

In one embodiment, the proximal end blocks disk by the limiting condition along its axial elongation, the choked flow film Choked flow area the proximal end block dish axle to projected length be greater than or equal to the proximal end block disk nature unfolded state most Large radius.

In one embodiment, when the proximal end closure disk is nature unfolded state, the flexible connecting member is described close End seal block up disk fixed point and the flexible connecting member the choked flow film tie point, proximal end block dish axle to projection it Between distance be d1；The proximal end blocks disk when being by limiting condition along axial elongation, and the flexible connecting member is described close End seal block up disk fixed point and the flexible connecting member the choked flow film tie point, proximal end block dish axle to projection it Between distance be d2；The flexible connecting member the proximal end block disk fixed point proximal end block dish axle to projection, with The choked flow film proximal end block dish axle to projection center between distance be d3；Wherein, d2 is greater than or equal to d1, and d2 Less than d3.

The proximal end block disk be used to fit in left auricle of heart cavity parameatal left atrial wall and with the choked flow film Cooperation blocks the opening of left auricle of heart cavity, and the distal end fixation member is for being fixed in left auricle of heart cavity, and usually distal end is solid The internal chamber wall for being close to left auricle of heart at the maximum radial profile of component is determined, so that proximal end closure disk is positioned at left auricle of heart cavity Oral area around left atrial wall.

In one embodiment, the proximal end skeleton includes proximal end face and proximal fasteners, and the distal end skeleton includes Distal surface and distal fastener, it further includes the flange being connected with the proximal end face and distal surface that the proximal end, which blocks disk, The proximal end face and the distal surface respectively include more braided wires, and the periphery of the choked flow film is limited in the flange； Or the periphery of the choked flow film is limited in the region close to the flange of the proximal end face；Or all margins of the choked flow film Positioned at the region close to the flange of the distal surface.The proximal fasteners and distal fastener are respectively used to be formed The end of the proximal end face and more braided wires of distal surface is gathered together to prevent more braided wires from scattering.

In one embodiment, which includes, under the natural unfolded state of plugging device, positioned at the close of plugging device End and interlaced braiding constitute the more braided wires that the proximal end blocks the proximal end face of disk, and by the close of the more braided wires End end is gathered together the proximal fasteners to prevent more braided wires from scattering.The proximal end of the flexible connecting member and the proximal end table It is located at the braided wires near the proximal fasteners in face to be connected, the central area of the distal end of the flexible connecting member and the choked flow film It is connected.

The choked flow film can be planar sheet under the natural unfolded state that the proximal end blocks disk, can also be non-flat dough sheet Shape.It is protruded with respect to its marginal zone towards the direction close to the distal end fixation member center of the proximal end face；Alternatively, described Proximal end face is plane.

" it is by the limiting condition along axial elongation that the proximal end, which blocks disk, ", can be in the split type occluder for left auricle Natural unfolded state under, left hand catch proximal end block disk proximal fasteners, the right hand hold distal end fixation member and keep not Dynamic, left hand is long to its limit towards direction (axial direction of proximal end closure disk) elongation proximal end closure disk far from the distal end fixation member When spending, the deformation that the proximal end blocks the choked flow film in disk is restricted, and has larger accumulation in the axial direction for blocking disk along proximal end Length has smaller ulking thickness in the radial direction that proximal end blocks disk.The limiting length refers to that both hands cannot again draw plugging device When long, in the upper corresponding plugging device length of plugging device axial direction.For example, when the proximal end blocks disk, to be pulled to its limit along axial direction long When spending, the choked flow film extends from the line that the periphery and the proximal end block disk towards the same side far from the line.Again For example, being directed toward the side of the line along proximally fastener when the proximal end blocks disk and is pulled to its limiting length along axial direction To the choked flow film is gradually increased in the radial ulking thickness that proximal end blocks disk, and the radial dimension of the proximal seal component is gradually Increase.

The choked flow film includes periphery and choked flow area, and the periphery is connected with proximal end closure disk and limits choked flow film It is blocked in disk in proximal end, i.e., the described choked flow film blocks disk by the proximal end by periphery and limits.The periphery and choked flow area are with institute It states choked flow film and the proximal end blocks the line of disk as line of demarcation.There are many choked flow membrane materials, but such as this field it is normal Polyester fiber film.

The proximal end, which blocks disk and can be, has grid by what the more braided wires with shape memory function were knitted to form Disk, but such as the network management that is knitted to form of the braided wires that intersect grid by two groups by one formed through mold heat setting process Disk-like structure.The proximal end, which blocks disk, can also be the disk with grid formed by the cuts in metallic pipe with shape memory function Shape structure.Proximal end face, distal surface and the flange that proximal end blocks disk are different parts of the same network management after mold thermal finalization, Either same metal network management is cut into the different parts after more metal strips after mold thermal finalization, i.e., the described proximal end blocks disk After being elongated to its limiting length, the proximal end face, distal surface and flange constitute a network management.

The proximal fasteners can be independently of the element that proximal end blocks the proximal end face setting of disk.In some embodiments In, which can also be used to be connected with the conveying wirerope of left auricle of heart conveyer.For example, the proximal fasteners are provided with The proximal end of internal screw thread or externally threaded metal tube, the more braided wires is all contained in the metal tube, and with the gold Belong to pipe to weld together, can not only prevent braided wires from scattering, but also can engage and be connected with the screw thread of the conveying wirerope of occluder for left auricle. In another example the proximal fasteners are the metal tubes of smooth outer surface, the proximal end of more braided wires is all contained in the metal In pipe, and weld together with the metal tube, the other end closing which is not connected with more braided wires.Example again Such as, the proximal fasteners are metal tubes, and the proximal end of the more braided wires is all contained in the metal tube, and with it is described Metal tube welds together, and the distal end of the metal tube is located at the inside that the proximal end blocks disk, and the proximal end of the metal tube is set There is the internal screw thread engaged with the conveying wirerope of occluder for left auricle.

The distal fastener can be independently of the fixing piece that proximal end blocks the distal surface setting of disk.As a kind of implementation Mode, the distal fastener are the metal tubes of smooth outer surface, and the distal end of more braided wires is all contained in the metal tube It is interior, and weld together with the metal tube, the distal end of the metal tube is connected with the proximal end of the distal end fixation member.As another A kind of embodiment, the distal fastener can be to form the multiply braided wires of the distal surface are formed after thermal finalization one Beam braided wires, the beam braided wires are connected with distal end fixation member simultaneously.

As an implementation, the periphery of choked flow film can be sewn on flange with suture, or be sutured in the proximal end The braided wires of the close flange of surface or distal surface；As another embodiment, the periphery of the choked flow film can be with medical Glue is limited in the braided wires of the close flange of flange or the proximal end face or distal surface.No matter the periphery of choked flow film with Proximal end is blocked disk and is fixedly connected using which kind of mode, and the company of all tie points of disk is all blocked using the periphery of choked flow film and proximal end Line characterizes the choked flow area opposite proximal end fastener of choked flow film or the positional relationship of distal fastener as object of reference.Preferably, Plane where the line blocks the axial direction of disk perpendicular to proximal end.

In the state that in the proximal end, closure disk is unfolded naturally, the proximal end blocks the proximal end face and/or distal end table of disk Face can be plane；The proximal end face and/or distal surface can also be non-planar, such as proximal end face and/or distal surface Center is with respect to its periphery, towards the center close to the direction of distal end fixation member protrusion or proximal end face towards proximal end Protrusion.When the proximal end face is non-planar, and its center is with respect to its periphery, towards the direction of the close distal end fixation member When protrusion, the choked flow film accordingly can have shape identical with the proximal end face, in order to be bonded with proximal end face, Such as but (such as cross section is in Ω for the choked flow area cup-shaped (such as cross section is in N-shaped or circular arc type) that protrudes from periphery or hat shape Type), or with the conical surface for being similar to cone, or similar to including that cone is truncated the conical surface after the vertex of a cone and top surface, resistance The periphery of stream film is limited in the flange, and choked flow area is covered in the center of the proximal end face, at this point, the choked flow film Choked flow area is identical as the equivalent concave surface angle of the center of the proximal end face.

The proximal end of split type occluder for left auricle suitable for the utility model blocks the matching of disk and choked flow film, can be following Any: proximal end blocks the proximal end face of disk and/or distal surface is plane, and choked flow film is in planar sheet, the periphery of choked flow film It is limited in flange, or is limited in the braided wires of proximal end face or distal surface；Or, proximal end blocks the proximal end face of disk and/or remote End surfaces be it is aforementioned non-planar, choked flow film is open and flat sheet, and the periphery of choked flow film is limited in proximal end face or distal surface Braided wires, preferably adjacent to the braided wires of flange；Or, the proximal end face that proximal end blocks disk is plane, choked flow film is above-mentioned non-flat Face shape, such as cup-shaped or hat shape, the periphery of choked flow film are limited in the braided wires of flange or proximal end face or distal surface；Or, Proximal end block the proximal end face of disk and distal surface be it is aforementioned non-planar, choked flow film is molded non-planar above-mentioned, such as cup-shaped Or hat shape, the periphery of choked flow film are limited in flange, or are limited in the braided wires of proximal end face or distal surface.

The flexible connecting member has biocompatibility.In the case where proximal end blocks disk nature unfolded state, the flexible connection Part can be not exceptionally straight, just exceptionally straight when elongating the proximal end and blocking disk to limiting length.As a preferred embodiment, the flexibility Connector can be suture, and in its natural state, length is unadjustable.Alternatively, the flexibility connects Fitting under a stretching force can be elongated.No matter flexible connecting member whether can be elongated, when it is pulled to the limit, that is, when being straightened Length, when should be greater than or being equal to proximal end and block disk in its natural state, proximal fasteners or distal fastener from flange away from From the radius for subtracting choked flow film, when being stretched to limiting length in order to plugging device, flexible connecting member is also pulled to its pole simultaneously Limit for length's degree, to drive choked flow area opposite proximal end fastener or the distal fastener movement of choked flow film.It is appreciated that being sealed in proximal end When stifled disk is by along its axial elongation to limiting length, projected length of the choked flow film in the axial direction is greater than or equal to proximal end and blocks Maximum radius of the disk under natural unfolded state.

In an embodiment of the utility model, the other end of the flexible connecting member is limited in the proximal end face Close to one or a few braided wires of the proximal fasteners；Or, the other end of the flexible connecting member is limited in the distal end One or a few braided wires close to the distal fastener on surface；Or, the other end of the flexible connecting member is limited in institute State proximal fasteners；Or, the other end of the flexible connecting member is limited in the distal fastener.

The flexible connecting member can be a single cord, or at least two single cords, every single cord and choked flow film Tie point only one.The flexible connecting member can also be a medical line and be formed at least twice to the different zones for wearing choked flow film At least two strands.It is preferably the multiple when the tie point of the flexible connecting member and choked flow film is at least two spaced point The tie point of dispersion is all located at same circumference, or the central symmetry about choked flow film substantially.It is highly preferred that the multiple dispersion Tie point be located at the same circumference that there is identical central with the choked flow film, and it is better closer to the center.More preferably, The tie point for multiple dispersions that the sub-thread flexible connecting member connects the center of the choked flow film or the multi cord is formed leans on The center of the nearly choked flow film.

In other specific embodiments, choked flow film periphery is limited in flange, and flexible connecting member can be one end and be connected to resistance Film is flowed close to the region on periphery, and the other end is connected to the braided wires of the close flange of proximal end face or distal surface.

Occluder for left auricle described above blocks the close of disk using the choked flow area and proximal end of flexible connecting member connection choked flow film Skeleton is held, or connects the choked flow area of choked flow film and the distal end skeleton of proximal end closure disk.When proximal end blocks disk along the axis of plugging device To when being elongated, choked flow film can be pull opposite proximal end fastener or distal fastener movement by flexible connecting member, thus to close End fastener or distal fastener protrusion, but the periphery of choked flow film is still limited in braided wires corresponding to flange, thus entire resistance It flows film and forms tent like.When proximal end, which blocks disk, is pulled to limiting length, whole choked flow film is blocked the proximal end face of disk by proximal end Braided wires or distal surface braided wires block disk along proximal end radial compression together, be located at choked flow film and proximal end and block disk Line the same side, choked flow film proximal end block disk radial direction ulking thickness it is smaller, proximal end closure dish axle to most raft Product length is larger.The direction of the line is directed toward along proximally fastener, whole choked flow film blocks the radially heap of disk in proximal end Long-pending thickness gradually increases, and forms cone-shaped (being referred to as chock shape) for being similar to shuttle or being cut out top.By proximal end sealing Part pulls sheath similar to chock is drawn in into sheath, facilitates doctor that can be assembled into proximal end seal member with lesser pulling force Sheath and release sheath release, thus avoid doctor from applying high thrust and cause misoperation, and then cannot be accurately on a left side Auricle oral area discharges plugging device, or because larger impulse force damages defect perienchyma.Due in the occluder for left auricle of same specification The constant dimension of choked flow film, thus choked flow film can all keep identical deformation when repeatedly drawing in sheath, and then reduce proximal end Maximum radial dimension when disk is pulled to limiting length is blocked, conducive to the sheath of minimum gauge is more accurately selected, and is avoided that Choked flow film repeatedly passes in and out the breakage due to friction with proximal end closure disk after sheath.

Detailed description of the invention

Fig. 1 is the universality structural schematic diagram that split type occluder for left auricle blocks left auricle of heart cavity；

Fig. 2 is that split type occluder for left auricle the cuing open in its natural state that one embodiment of the utility model provides is shown Figure；

Fig. 3 is the schematic diagram of the distal end fixation member of split type occluder for left auricle shown in Fig. 2 in its natural state；

Fig. 4 is that the proximal end of split type occluder for left auricle shown in Fig. 2 blocks the schematic diagram that disk is elongated；

Fig. 5 is that the proximal end of split type occluder for left auricle shown in Fig. 2 blocks schematic diagram when disk is pulled to limiting length；

Fig. 6 is that the proximal end of split type occluder for left auricle shown in Fig. 2 blocks disk in nature and is pulled to limiting length When, proximal end block dish axle to projection change schematic diagram.

Specific embodiment

Occluder for left auricle provided by the utility model is described in detail below with reference to attached drawing and text.It retouches below The structure for each split type occluder for left auricle stated is only used for for example, not constituting to the utility model claims book The limitation of protection scope.To those skilled in the art, without departing from the concept of the premise utility, may be used also Several modifications and improvements are made outside the split type occluder for left auricle that specific embodiment of the present invention discloses, these should belong to In the protection scope of the utility model.

For the structure for more clearly describing split type occluder for left auricle, limit herein term " distal end ", " proximal end " and " convex Edge ", the term are the common terminology in interventional medical device field.Wherein, when " distal end " indicates simulation surgical state, far from operation One end of person, when " proximal end " indicates simulation surgical state, by one end of proximal operator." flange " is indicated for connecting proximal end face With the cyclic annular position of distal surface.Components A " is limited in " B, and A is by B defined position for expression, such as can be A and fixed and phase by B B cannot be shifted, can also be A be flexibly connected with B and can A and B can opposite other side's activity in allowed limits.

Referring to fig. 2 to Fig. 4, the split type occluder for left auricle 1 that one embodiment of the utility model provides is sealed including proximal end Stifled disk 11 is connected with the distal end that proximal end blocks disk 11 and is located at the distal end fixation member 12 that proximal end blocks the distal side of disk 11, with And it is limited in the film 13 of the distal end of distal end fixation member 12.Proximal end blocks disk 11 by the more braidings with shape memory function Silk weaves, and the proximal end of more braided wires is contained in proximal fasteners 111.Proximal end blocks disk 11 substantially in commonly used in the art Patend ductus arteriosus occluder shape, including proximal end face 1111, the distal surface 1112 opposite with proximal end face 1111, The flange being connected between proximal end face 1111 and distal surface 1112 and with proximal end face 1111 and distal surface 1112 1113 and proximal fasteners 111 and distal fastener 112.It is appreciated that proximal end face 1111, distal surface 1112 and convex Edge 1113 all includes more braided wires, and three is the different parts of same network management, is pulled to limiting length when proximal end blocks disk 11 Afterwards, proximal end face 1111, distal surface 1112 and flange 1113 reconstitute the network management.The proximal end of the more braided wires is by close End fastener 111 is gathered together, and is distally converged by distal fastener 112.Flange 1113 is located at proximal end and blocks disk 11 in nature The corresponding circumference of maximum gauge under state.

Choked flow film 450 is set to proximal end and blocks in disk 11, is in planar sheet under natural unfolded state, periphery is limited in flange 1113, and periphery is limited by flange 1113, the central area of choked flow film 450 passes through flexible connecting member 700 and proximal end face 1111 Several metal knitted silks close to proximal fasteners 111 are connected.Choked flow film 450 can be polyester fiber film commonly used in the art, Blood flow can not be allowed to pass through, also can permit a small amount of blood flow and pass through, but a small amount of blood flow pass through after can in 450 table of choked flow film Face forms thrombus, and later blood flow is prevented to pass through.The periphery of choked flow film 450 can be limited in flange 1113 by suture Corresponding braided wires can also be limited in the corresponding braided wires of flange 1113 by medical glue.

Under the natural unfolded state that proximal end blocks disk 180, choked flow film 300 is planar sheet, and periphery is limited in flange 183, i.e. choked flow film 300 blocks disk 180 by proximal end by periphery and limits.The covering proximal end face 181 substantially of choked flow film 300.It is described The choked flow area of choked flow film 300 refers in present embodiment centered on the center of choked flow film 300, with the periphery of choked flow film 300 Line 183b with all tie points of flange 183 is the region on boundary.In present embodiment, flexible connecting member 400 is in choked flow film Geometric center of 300 tie point close to choked flow film 300.

Flexible connecting member 700 is a suture to the four gangs of doctors formed after the central area for wearing four choked flow films 450 Use suture.Several stitch points that four bursts of suturees and choked flow film 450 are crossed to form are located substantially at choked flow film 450 Geometric center centered on same circumference, and proximal fasteners 111 in choked flow film 450 projection be located at the circumference the center of circle. It is understood that medical sutures line length commonly used in the art can not be adjusted because being elongated, oneself of disk 11 is blocked in proximal end Under right state, flexible connecting member 700 is soft shape, and not as shown in Figure 2 is straightened shape.Fig. 2 be only used for showing choked flow film 450 with Flexible connecting member 700 and proximal end block positional relationship and connection relationship between disk 11.Flexible connecting member 700 can also be other tools There is the wire body of biocompatibility.The other end of every suture passes through grid, and to be connected to proximal end face 1111 tight close to proximal end The braided wires of firmware 111.

The smooth outer surface of proximal fasteners 111 and distal fastener 112, wherein proximal fasteners 111 are located at proximal end table The center in face 1111.Distal fastener 112 is located at distal surface 1112 and blocks the axial center of disk 11 along proximal end, can be metal Tube.In other embodiments, the more braided wires that distal fastener 112 can block disk 11 by forming proximal end collect, I.e. distal fastener 112, distal end fixation member 12 and proximal end block disk 11 be constitute same network management more braided wires weave and At being different parts of the network management after mold thermal finalization respectively.

Distal end fixation member 12 can be the reticular structure being knitted to form by more nickel-titanium metal braided wires.Distal end fixation member 12 pool proximally by fastener 121 is a branch of, and the distal fastener 112 for blocking disk 11 with proximal end is connected, and first Xiang Yuanduan Radiation and extend, being formed in distal end has opening 1221 and tapered net radiation section 122, and then proximally turnup is formed and institute State the connected U-bend trisection in the distal end of radiant section 122, and extend to form towards proximal end be connected with the distal end of the bending segment it is hanging Supporting section 123, one end that hanging supporting section 123 is not connected with U-bend trisection is hanging, and hanging supporting section 123 surrounds the capitate Radiant section 122.

Radiant section 122 has the vertex of a cone and distal open end, which collects in fastener 121, and the distal open end is from interior It is outwardly directed to proximal end turnup and is connected with one end of bending segment 125.Hanging supporting section 123 is substantially in circular ring shape, surrounds taper spoke Penetrate section 122.Under the use state of occluder for left auricle 1, hanging supporting section 123 is hanging for contacting with left auricle of heart cavity wall The distal end that disk 11 is blocked close to proximal end is held, and open.In a specific embodiment, the free end of hanging supporting section 123 may be used also It bends inwards to form closing in area 124 that is substantially u-shaped and surrounding fastener 121 in the position close to fastener 121.

Film 13 can partly or entirely cover the distal openings 1221 of cone of radiation section 122.In the specific implementation shown in Fig. 3 In mode, film 13 is spheric film, all covers distal openings 1221, and film 13 also may be further extended covering anchor portion At least partly outer surface of 123 distal ends.Film 13 can suture or gluing is in the outer end outer surface of distal end fixation member 12.Anchor thorn 14 root is connected with distal end fixation member 12, and one end opposite with root is free end, under natural unfolded state, the anchor The proximally facing closure disk 11 of free end of thorn 14.The free end of anchor thorn 14 is pierced by film 13.That is, film 13 can also lead to Anchor thorn 14 is crossed to be fixed in distal end fixation member 12.Anchor thorn 14 can directly be formed by the braided wires 120 of formation anchor portion 123, It can be additional braided wires and the braided wires 120 be limited in by steel bushing 15.

Fig. 2 and Fig. 4 are referred to, left hand catches proximal fasteners 111, and the right hand is held distal end fixation member 12 and remained stationary, Left hand elongates proximal end towards the direction far from the distal end fixation member 12 and blocks disk 11.The process that disk 11 is elongated is blocked in proximal end In, proximal fasteners 111 will drive the central area of choked flow film 450 towards far from 403 (line of flange by flexible connecting member 700 Direction movement 403b), and the periphery of choked flow film 450 is still limited in flange 183, choked flow film 450 forms tent like.It is understood that , when proximal end, which blocks disk 11, is pulled to limiting length, the choked flow area of choked flow film 450 can all be located at the same side of line 403b (outside the plane where the line), choked flow film 450 can substantially form under the extruding of more braided wires of proximal end face Cone, and be packed together along the axial direction that proximal end blocks disk 11, and proximally line 403b's be directed toward in the direction of fastener 111 Direction, choked flow film 450 are incremented by the radial ulking thickness that proximal end blocks disk 11, are formed and be similar to chock shape, it will be understood that close All braided wires of end surfaces are also formed simultaneously similar chock shape as shown in Figure 5 with choked flow film 450.It deforms accordingly, it can be unique Derive, the choked flow film the proximal end block dish axle to projected length be substantially equal to the proximal end and block disk in natural exhibition The maximum radius of open state.Referring to Fig. 6, when proximal end closure disk 11 is nature unfolded state, flexible connecting member 700 is sealed in proximal end The fixed point of stifled disk is d1 at a distance from flexible connecting member 700 is between the tie point of choked flow film 450；It is quilt that proximal end, which blocks disk 11, When along the limiting condition of axial elongation, flexible connecting member 700 is being hindered in the fixed point that proximal end blocks disk 11 with flexible connecting member 700 It is d2 that the tie point for flowing film 450, which blocks the axial projector distance of disk 11 in proximal end,；Flexible connecting member 700 blocks disk 11 in proximal end Fixed point blocks the axial projection of disk 11 in proximal end, blocks the center of the axial projection of disk 11 close in proximal end with choked flow film 450 End seal block up dish axle to distance be d3；Wherein, d2 is greater than or equal to d1, and d2 is less than d3.

As a result, compared with the prior art, the deformation of choked flow film is limited by the drawing of flexible connecting member, utilizes flexible connecting member Drawing to ensure that choked flow film in proximal end blocks accumulation shape when disk is pulled to its limiting length roughly the same, so that optimization is close End seal blocks up the minimum value of the maximum radial dimension of disk, is easy to use smaller sheath, and after being avoided that choked flow film repeatedly passes in and out sheath It is damaged because blocking the friction of disk with proximal end.

Claims

1. a kind of split type occluder for left auricle, including proximal end block disk, choked flow film and position in disk are blocked set on the proximal end In the distal end fixation member that the proximal end blocks disk distal side and is connected with the distal end that the proximal end blocks disk；It is characterized in that, The distal end fixation member is formed by metal wire knitted, and its proximal end blocks disk with proximal end with collecting and connect to form conical mesh spoke Section is penetrated, distal openings and proximally turnup are formed with the hanging supporting section for surrounding the radiant section, the split type left auricle of heart envelope Stifled device further includes flexible connecting member, and described flexible connecting member one end is connected with the choked flow film, and the other end is limited in the proximal end Block the proximal end skeleton or distal end skeleton of disk.

2. split type occluder for left auricle as described in claim 1, which is characterized in that the proximal end blocks disk as nature expansion When state, the flexible connecting member the proximal end block disk fixed point and the flexible connecting member the choked flow film company Contact, proximal end block dish axle to projection between distance be d1；It is by the limit along axial elongation that the proximal end, which blocks disk, When state, the flexible connecting member the proximal end block disk fixed point and the flexible connecting member the choked flow film company Contact, proximal end block dish axle to projection between distance be d2；The flexible connecting member blocks consolidating for disk in the proximal end Pinpoint proximal end block dish axle to projection, with the choked flow film proximal end block dish axle to projection center between at a distance from For d3；Wherein, d2 is greater than or equal to d1, and d2 is less than d3.

3. split type occluder for left auricle as claimed in claim 1 or 2, which is characterized in that the proximal end skeleton includes proximal end Fastener and constitute proximal end face more braided wires, the distal end skeleton include distal fastener and constitute distal surface it is more Root braided wires, it further includes the flange being connected with the proximal end face and distal surface that the proximal end, which blocks disk,；The choked flow film Periphery is limited in the flange；Or the periphery of the choked flow film is limited in the braiding close to the flange of the proximal end face Silk；Or the periphery of the choked flow film is limited in the braided wires close to the flange of the distal surface.

4. split type occluder for left auricle as claimed in claim 3, which is characterized in that the choked flow film is blocked in the proximal end It is planar sheet or non-planar under the natural unfolded state of disk.

5. split type occluder for left auricle as claimed in claim 3, which is characterized in that the flexible connecting member is in the choked flow The tie point of film is located at the center of the choked flow film；Or the tie point is close to the center of the choked flow film.

6. split type occluder for left auricle as claimed in claim 3, which is characterized in that the flexible connecting member is single cord, It or is single line at least twice to wearing at least two strands formed after the choked flow film.

7. split type occluder for left auricle as claimed in claim 3, which is characterized in that the other end of the flexible connecting member limits Positioned at the braided wires close to the proximal fasteners of the proximal end face；Or, the other end of the flexible connecting member is limited in The braided wires close to the distal fastener of the distal surface；Or, the other end of the flexible connecting member be limited in it is described Proximal fasteners；Or, the other end of the flexible connecting member is limited in the distal fastener.

8. split type occluder for left auricle as claimed in claim 3, which is characterized in that the center of the proximal end face is opposite It is protruded towards the direction close to the distal end fixation member its marginal zone；Alternatively, the proximal end face is plane.

9. split type occluder for left auricle as described in claim 1, which is characterized in that the proximal end blocks disk for fitting in The parameatal left atrial wall of left auricle of heart cavity and the opening for cooperating and blocking left auricle of heart cavity with the choked flow film, it is described remote Proximal end closure disk is positioned at around the opening of left auricle of heart cavity by end fixation member for being fixed in left auricle of heart cavity Left atrial wall.