CN209611204U - Plugging device - Google Patents

Abstract

The utility model relates to a kind of plugging devices, including the end socket for blocking unit and being connected with closure unit, blocking unit has a central axis, central axis passes through plugging device proximally and distally, plugging device further includes mark structure, mark structure includes distal marker and at least two first markers, distal marker is set on end socket, each first marker is connected with closure unit, each first marker is respectively positioned in same holding plane, holding plane is perpendicular to central axis, distal marker is located at except holding plane, each first marker is located on a straightway in the subpoint in a projection plane perpendicular to holding plane, plugging device under natural conditions, the line of the two-end-point of distal marker and straightway is triangular in shape.The success rate of implant surgery can be improved in the plugging device of the utility model.

Description

Plugging device

Technical field

The utility model relates to medical instruments fields, more particularly to a kind of plugging device.

Background technique

1974, King and Mills completed Cardiac catheterization ostium secundum defect (atrial for the first time Septal defect, ASD), hereafter with continuously improving for instrument is blocked, since especially 1997, with Amplatzer Nitinol braiding plugging device emerges, and Nitinol braiding plugging device is widely used in atrial septal defect (ASD), interventricular septum lacks The interventional therapy of the congenital heart diseases such as damage (VSD), patent ductus arteriosus (PDA) and acleistocardia (PFO).At present through conduit The congenital heart diseases such as interventional blocking device minimally-invasive treatment atrial septal defect ASD, VSD, PDA and PFO become important method.Plugging device Behind heart defect position, tissue ingrowth around defect simultaneously completes endothelialization.Nondegradable plugging device completes endothelium Still long-term existence is also easy to produce long term complication and adverse effect, including atrioventricular block, valve damage in defect after change Worn out, nickel allergy of wound, residual shunt, heart etc..Therefore, the degradable plugging device made of degradation material is that current intervention is controlled Treat the latest development direction in closure field.Degradable plugging device achievable effect for blocking defect after being implanted into human body, has blocked Cheng Hou, the material for forming plugging device are degraded in vivo, are finally excluded in vitro, to avoid human body at CO2 and water by body metabolism For a long time by foreign materials away.

Biodegradable material applied to interventional therapy field includes but is not limited to polylactic acid (PLA), polyglycolic acid (PGA), poly lactide-glycolide acid (PLGA), poly-hydroxy fatty acid rouge (PHA), polydioxanone (PDO) or gather oneself Lactone (PCL) etc..

Transcatheter occlusion is usually required in DSA (Digital Subtraction Angiography, Digital Subtraction blood vessel Shadowgraph technique) etc. be operated under the guidance of X ray images equipment, therefore it is required that plugging device has radiation under X ray Impermeability, can be identified under X-ray.Developability of the plugging device made of degradation material under X-ray is poor, at DSA It is difficult to judge its accurate location and release conditions, the success rate of implant surgery is caused to decline.

Utility model content

Based on this, it is necessary to provide a kind of plugging device, be difficult to sentence to solve existing plugging device under X ray image equipment The problem of accurate location and release conditions of disconnected implantation product.

A kind of plugging device, including the end socket for blocking unit and being connected with closure unit, blocking unit has a central axis, in Mandrel passes through plugging device proximally and distally, and plugging device further includes mark structure, and mark structure includes distal marker and at least Two the first markers, distal marker are set on end socket, and each first marker is connected with closure unit, each first marker It is respectively positioned in same holding plane, holding plane is located at except holding plane perpendicular to central axis, distal marker, each first mark Note object is located on a straightway in the subpoint in a projection plane perpendicular to holding plane, in the nature of plugging device Under, the line of the two-end-point of distal marker and straightway is triangular in shape.

It is to be appreciated that blocking unit includes the first subelement, the first subelement is including the first Dropbox and is set to the first net The first choked flow film in disk, central axis passes through the geometric center of the first Dropbox, and central axis is in flat where the first Dropbox Face, central axis passes through the geometric center of the first choked flow film, and central axis is in the plane where the first choked flow film, each first mark Note object is connected with the first Dropbox, or, each first marker is connected with the first choked flow film.

It is to be appreciated that each first marker is both secured in the first Dropbox, plugging device under natural conditions, each first The distance between marker and central axis be equal to or the edge of respectively less than the first Dropbox to the first Dropbox geometric center away from From.

It is to be appreciated that each first marker is both secured on the first choked flow film, plugging device under natural conditions, each The distance between at least one and central axis are equal to the edge of the first choked flow film into the geometry of the first choked flow film in one marker The distance of the heart, or, the distance between each first marker and central axis are respectively less than the edge of the first choked flow film to the first choked flow film Geometric center distance.

It is to be appreciated that plugging device under natural conditions, the distance between each first marker and central axis be respectively less than The edge of first choked flow film to the first choked flow film geometric center distance, each first marker is along the first circle distribution, first Circumference is arranged concentrically with the first choked flow film.

It is to be appreciated that each first marker, along the first circumference equidistantly distributed, the range of the quantity of the first marker is 2 To 12.

It is to be appreciated that blocking unit further includes the second subelement being connected with the first subelement, the second subelement includes Second Dropbox and the second choked flow film in the second Dropbox, central axis passes through the geometric center of the second Dropbox, and central axis hangs down Directly in the plane where the second Dropbox, central axis passes through the geometric center of the second choked flow film, and central axis is in the second choked flow Plane where film, mark structure further include at least two second markers, and each second marker is connected with the second Dropbox, Or, each second marker is connected with the second choked flow film.

It is to be appreciated that each second marker is both secured in the second Dropbox, plugging device under natural conditions, each second The distance between marker and central axis be equal to or the edge of respectively less than the second Dropbox to the second Dropbox geometric center away from From.

It is to be appreciated that each second marker is both secured on the second choked flow film, plugging device under natural conditions, each The distance between at least one and central axis are equal to the edge of the second choked flow film into the geometry of the second choked flow film in two markers The distance of the heart, or, the distance between each second marker and central axis are respectively less than the edge of the second choked flow film to the second choked flow film Geometric center distance.

It is to be appreciated that plugging device under natural conditions, the distance between each second marker and central axis be respectively less than The edge of second choked flow film to the second choked flow film geometric center distance, each second marker is along the second circle distribution, second Circumference is arranged concentrically with the second choked flow film.

It is to be appreciated that each second marker, along the second circumference equidistantly distributed, the range of the quantity of the second marker is 2 To 12.

It is to be appreciated that blocking unit further includes waist and third choked flow film, the both ends of waist respectively with the first Dropbox and Second Dropbox is connected, and third choked flow film is set in waist, and central axis passes through the geometric center of third choked flow film, and central axis Plane where third choked flow film, mark structure further include at least two third markers, and each third marker is and waist It is connected, or, each third marker is connected with third choked flow film.

It is to be appreciated that each third marker is connected with third choked flow film, plugging device under natural conditions, each third The distance between at least one in marker and central axis are equal to the edge of third choked flow film to the geometric center of third choked flow film Distance, or, the distance between each third marker and central axis are respectively less than the edge of third choked flow film to third choked flow film The distance of geometric center.

It is to be appreciated that the quantity of the first marker, the second marker and third marker is 2, in plugging device Under natural conditions, two first markers are located at the both ends of the same diameter of the first choked flow film, and two second markers are located at the second resistance The both ends of the same diameter of film are flowed, two third markers are located at the both ends of the same diameter of third choked flow film, and two first labels Object, two second markers and two third markers are coplanar.

The mark structure of above-mentioned plugging device includes distal marker and at least two first markers, and distal marker is set to On end socket, each first marker is connected with closure unit, and each first marker is respectively positioned in same holding plane, holding plane Perpendicular to central axis, distal marker is set to except holding plane, each first marker one perpendicular to holding plane projection Subpoint in plane is located on a straightway, plugging device under natural conditions, the two-end-point of distal marker and straightway Line it is triangular in shape, during the release of plugging device, mark structure can develop at DSA to guide the release of plugging device, During surgery, the metamorphosis of triangle can be formed by by the line of distal marker and the two-end-point of straightway, accurately Ground judgement blocks the accurate location and release conditions of unit, and then improves the success rate of operation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of plugging device in an embodiment.

Fig. 2 is the structural schematic diagram of plugging device and atrial septum cooperation in an embodiment.

Fig. 3 is the structural schematic diagram of plugging device and sheath cooperation in an embodiment.

Fig. 4 a is the first state figure of plugging device in an embodiment.

Fig. 4 b is the second state diagram of plugging device in an embodiment.

Fig. 4 c is the third state figure of plugging device in an embodiment.

Fig. 4 d is the 4th state diagram of plugging device in an embodiment.

Fig. 5 is a structural schematic diagram for applying the first choked flow film and the first marker in example.

Fig. 6 is end socket in an embodiment, the structural schematic diagram for blocking unit, mark structure.

Fig. 7 is the top view that unit is blocked in an embodiment.

Specific embodiment

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs The limitation for the specific implementation opened.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level ", "left", "right" and similar statement for illustrative purposes only, be not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet Include any and all combinations of one or more related listed items.

In order to clearly describe the structure of the utility model, the noun of locality, the orientation are used as using " distal end ", " proximal end " Word is interventional medical device field common terminology, wherein " distal end " indicates one end in surgical procedure far from operator, " proximal end " Indicate one end that proximal operator is depended in surgical procedure.

As shown in Figure 1, the present embodiment provides a kind of plugging device 100, including block unit 10 and be connected with unit 10 is blocked End socket 141, block unit 10 have a central axis A-A, central axis A-A pass through plugging device 100 proximally and distally, plugging device 100 further include mark structure 20, and mark structure 20 includes distal marker 211 and at least two first markers 212, and distal end is marked Remember that object 211 is set on end socket 141, each first marker 212 is connected with closure unit 10, and each first marker 212 is respectively positioned on In same holding plane, holding plane is located at except holding plane perpendicular to central axis A-A, distal marker 211, each first mark Note object 212 be located on a straightway in the subpoint in a projection plane perpendicular to holding plane, plugging device 100 oneself Under right state, distal marker 211 and the line of the two-end-point of the straightway are triangular in shape.

The plugging device 100 of the present embodiment is used to block the defect of atrial septum 300, as shown in Figure 2.Also referring to Fig. 3 institute Show, for plugging device 100 before use, needing to be fitted into conveyer, conveyer includes the sheath 400 that an internal diameter is 2-5mm, is blocked Device 100 is needed in implantation at DSA (Digital Subtraction Angiography, Technology of Digital Subtraction Angiography) It is operated under the guidance of equal X ray images equipment, so that plugging device 100 is conveyed along sheath 400 to distal end, is delivered to phase After closing lesions position, active force is applied to plugging device 100, by plugging device 100 from release to atrial septum 300 in sheath 400 To block the defect of atrial septum 300.Specifically, the sheath 400 of plugging device 100 is mounted with behind atrial septum 300, to plugging device 100 application active forces move to closure unit 10 outside sheath 400, block unit 10 and open up under the resilient force of itself It opens, to block defect.

The mark structure 20 of plugging device 100 includes distal marker 211 and at least two first markers 212, and distal end is marked Remember that object 211 is set on end socket 141, each first marker 212 is connected with closure unit 10, and each first marker 212 is respectively positioned on In same holding plane, holding plane is set to except holding plane perpendicular to central axis A-A, distal marker 211, each first mark Note object 212 is located on a straightway in the subpoint in a projection plane perpendicular to holding plane, in the nature of plugging device 100 Under state, distal marker 211 and the line of the two-end-point of straightway are triangular in shape, during the release of plugging device 100, Mark structure 20 can develop at DSA to guide the release of plugging device 100.

Specifically, as shown in fig. 4 a, applying active force to plugging device 100 makes it in atrium sinistrum (herein only with plugging device 100 Be illustrated, but be not limited thereto for being unfolded in atrium sinistrum) in expansion, by adjusting parameters such as the head angles of DSA, So that projection point of each first marker 212 in a projection plane perpendicular to holding plane in the picture that DSA is detected In on a straightway, and distal marker 211 and the line of the two-end-point of the straightway are triangular in shape, at this point, patient can lead to pair Whether plugging device 100, which applies active force, makes its reciprocating motion, deformed in reciprocatory movement by observing the triangle, If in the process, triangle does not deform, then can determine whether to block unit 10 and not being affixed with atrial septum 300.

As shown in Figure 4 b, continue to move to the near end closure unit 10 to each first to the application active force of unit 10 is blocked Marker 212 is affixed with atrial septum 300, in the process, patient can be guided to carry out hand by observing the geometric shape of triangle Art, auxiliary patient understands the positional relationship for blocking unit 10 and atrial septum 300, so as to subsequent operation plugging device 100.Specifically, After each first marker 212 is affixed with atrial septum 300, the movement of each first marker 212 is restricted, and distal marker 211 can be freely moved, at this point, distal marker 211 continues, triangle meeting close to atrial septum 300 and the first marker 212 It deforms, is can determine whether at this time to block unit 10 and being affixed with atrial septum 300.

As illustrated in fig. 4 c, after blocking unit 10 and atrial septum 300 is affixed, if continuing proximally to pull plugging device 100, far End marker 211 continues close to atrial septum 300, when the projection of distal marker 211 is conllinear with straightway, if being further continued for envelope Stifled device 100, which applies active force, makes distal marker 211 continue to move close to atrial septum 300, as shown in figure 4d, distal marker 211 may cross the defect location of atrial septum 300, and plugging device 100 is caused to fall off, in this way, when distal marker 211 projection with Straightway can play the role of early warning to patient when conllinear, and distal marker 211 is avoided to cross the defect position of atrial septum 300 It sets, and then avoids plugging device 100 and fall off, therefore, the plugging device 100 in the present embodiment may determine that it is accurate at DSA Position and release conditions improve the success rate of operation.

Further, as shown in Figure 1, blocking unit 10 includes the first subelement 11, the first subelement 11 includes the first net Disk 111 and the first choked flow film 112 in the first Dropbox 111, central axis A-A pass through the geometric center of the first Dropbox 111, and For central axis A-A perpendicular to the plane where the first Dropbox 111, central axis A-A passes through the geometric center of the first choked flow film 112, and Central axis A-A is connected with the first Dropbox 111 perpendicular to the plane where the first choked flow film 112, each first marker 212. Or, as shown in figure 5, in another embodiment, each first marker 212 is connected with the first choked flow film 112.

In the present embodiment, central axis A-A passes through the geometric center of the first Dropbox 111, and central axis A-A is perpendicular to the first net Plane where disk 111, so that plane where the first Dropbox 111 is perpendicular to projection plane, each first marker 212 is with the One Dropbox 111 is connected, and may make projection of each first marker 212 in projection plane to be located on same straightway, and make The projection of distal marker 211 is triangular in shape with the line at the both ends of the straightway.Similarly it is found that central axis A-A passes through first The geometric center of choked flow film 112, and central axis A-A may make the first choked flow film perpendicular to the plane where the first choked flow film 112 Perpendicular to projection plane, each first marker 212 is connected with the first choked flow film 112 plane where 112, may make each first Projection of the marker 212 in projection plane is located on same straightway, further make the projection of distal marker 211 with The line at the both ends of straightway is triangular in shape.

As shown in fig. 4 a, during surgery, applying active force to plugging device 100 opens up the first subelement 11 in atrium sinistrum It opens, by adjusting parameters such as the head angles of DSA, so that each first marker 212 is in projection plane in the picture that DSA is detected Interior subpoint is located on a straightway, and makes distal marker 211 and the line of the two-end-point of straightway triangular in shape, Patient, which can lead to, makes its reciprocating motion to the application active force of plugging device 100, is in reciprocatory movement by observing the triangle It is no to deform, if in the process, triangle does not deform, then can determine whether for block unit 10 not with 300 phase of atrial septum Patch.

As shown in Figure 4 b, continue to move to the near end closure unit 10 to the first net to the application active force of unit 10 is blocked Disk 111 or the first choked flow film 112 are affixed with atrial septum 300, in the process, can be assisted by observing the geometric shape of triangle Patient understands the positional relationship of the first Dropbox 111 and atrial septum 300, to operate the subsequent release of plugging device 100.Specifically, After the first Dropbox 111 or the first choked flow film 112 are affixed with atrial septum 300, the movement of each first marker 212 is limited System, and distal marker 211 can be freely moved, at this point, distal marker 211 continues to atrial septum 300 and the first marker 212 is close, and triangle can deform, and can determine whether to be affixed with atrial septum 300 for the first subelement 11 at this time.

As illustrated in fig. 4 c, after the first subelement 11 is affixed with atrial septum 300, if continuing proximally to pull plugging device 100, Distal marker 211 continues close to atrial septum 300, when the projection of distal marker 211 is conllinear with straightway, if being further continued for pair Plugging device 100, which applies active force, makes distal marker 211 continue to move close to atrial septum 300, as shown in figure 4d, distal marker 211 may cross the defect location of atrial septum 300, and plugging device 100 is caused to fall off, in this way, when distal marker 211 projection with Straightway can play the role of early warning to patient when conllinear, and distal marker 211 is avoided to cross the defect position of atrial septum 300 It sets, and then plugging device 100 can be avoided and fallen off, improve success rate of operation.

In the present embodiment, in plugging device 100 in use, the first Dropbox 111 and the first choked flow film 112 are transported to room Every 300 defect point, for blocking the defect of the atrial septum 300.First Dropbox 111 is made of the material with elastic memory, When the first Dropbox 111 be transported to desired location and move to sheath 400 it is outer when, the first Dropbox 111 can be in itself elastic force It is unfolded under effect and restores to nature, and the first Dropbox 111 can drives the first choked flow film in recovery to nature 112 expansion, so that the first Dropbox 111 and the first choked flow film 112 block the defect of atrial septum 300.

It is to be appreciated that as shown in Figure 1, each first marker 212 is both secured in the first Dropbox 111, in plugging device 100 Under natural conditions, the distance between each first marker 212 and central axis A-A are equal to the edge of the first Dropbox 111 to The distance of the geometric center of one Dropbox 111.

In the present embodiment, during surgery, when the edge of the first Dropbox 111 is bonded with atrial septum 300, each first marker 212 are both secured in the first Dropbox 111, and the distance between each first marker 212 and central axis A-A are equal to the first Dropbox The distance of the geometric center at 111 edge to the first Dropbox 111, it is ensured that each first marker 212 is pasted with atrial septum 300 It closes, distal marker 211 and the accuracy for guiding operation that the first marker 212 is used cooperatively can be improved.

In one embodiment, the first Dropbox 111 is rounded, and central axis A-A passes through the center of circle (i.e. the first net of the first Dropbox 111 The geometric center of disk 111), each first marker 212 is both secured on the circumference of the first Dropbox 111, each first marker 212 with Distance is equal to the radius of the first Dropbox 111 between the center of circle of first Dropbox 111.

Certainly, in other embodiments, plugging device 100 under natural conditions, each first marker 212 and central axis The distance between A-A can also be respectively less than the edge of the first Dropbox 111 to the first Dropbox 111 geometric center distance.For example, the One Dropbox 111 is rounded, and central axis A-A passes through the center of circle (i.e. the geometric center of the first Dropbox 111) of the first Dropbox 111, and each the One marker 212 is fixed on the upper of the first Dropbox 111 along a circumference, the center of circle of each first marker 212 and the first Dropbox 111 it Between distance be equal to the first Dropbox 111 radius, specifically, the diameter of each first marker, 212 place circumference is than the first Dropbox The small 1-8mm of 111 diameter.In the present embodiment, the distance between each first marker 212 and central axis A-A can also be respectively less than The edge of one Dropbox 111 to the first Dropbox 111 geometric center distance, to facilitate processing, also, by plugging device 100 by sheath When pipe 400 conveys from inside to outside, the first marker 212 can also be avoided to rub with 400 inner wall of sheath, and then from avoiding first Marker 212 falls off.

It is to be appreciated that each first marker 212 is both secured on the first choked flow film 112, in the nature of plugging device 100 Under state, the distance between at least one and central axis A-A are equal to the edge of the first choked flow film 112 in each first marker 212 To the distance of the geometric center of the first choked flow film 112.Or, as shown in fig. 6, between each first marker 212 and central axis A-A Distance respectively less than the first choked flow film 112 edge to the first choked flow film 112 geometric center distance.

In the present embodiment, the spacing between the first marker 212 and central axis A-A is equal to the edge of the first choked flow film 112 To the first choked flow film 112 geometric center apart from when, for example, the first choked flow film 112 is rounded, central axis A-A passes through first The center of circle (i.e. the geometric center of the first choked flow film 112) of choked flow film 112, each first marker 212 is fixed on the first choked flow film 112 Edge, the distance in the center of circle of each the 212 to the first choked flow of first marker film 112 is equal to the radius of the first choked flow film, performing the operation In, distal marker 211 and the accuracy for guiding operation that the first marker 212 is used cooperatively can be improved.Each first label The distance between object 212 and central axis A-A are respectively less than the edge of the first choked flow film 112 to the geometric center of the first choked flow film 112 Apart from when, can rub to avoid with each first marker 212 and the inner wall of sheath 400, and then can be avoided One marker 212 falls off.

Preferably, in an embodiment, plugging device 100 under natural conditions, each first marker 212 and central axis A-A The distance between be respectively less than the first choked flow film 112 edge to the first choked flow film 112 geometric center distance, it is each first label Object 212 is arranged concentrically along the first circle distribution, the first circumference with the first choked flow film 112.

In the present embodiment, the distance between each first marker 212 and central axis A-A are respectively less than the first choked flow film 112 Edge to the first choked flow film 112 geometric center distance, for example, the first choked flow film 112 is rounded, central axis A-A passes through the The center of circle (i.e. the geometric center of the first choked flow film 112) of one choked flow film 112, each first marker 212 is fixed on along the first circumference On first choked flow film 112, the diameter 1-8mm of the diameter of the first circumference less than the first choked flow film.It can be to avoid each first marker 212 rub with the inner wall of sheath 400, and then can avoid the first marker 212 and fall off.

It is to be appreciated that each first marker 212 is along the first circumference equidistantly distributed, the quantity of the first marker 212 Range is 2 to 12.

Preferably, as shown in figure 5, in an embodiment, mark structure 20 includes 6 the first marker 212,6 first marks Remember object 212 along the first circumference equidistantly distributed.

It is to be appreciated that as shown in Figure 1, blocking unit 10 further includes the second subelement being connected with the first subelement 11 12, the second subelement 12 includes that the second Dropbox 121 and the second choked flow film 122 in the second Dropbox 121, central axis A-A are worn The geometric center of the second Dropbox 121 is crossed, and central axis A-A, perpendicular to the plane where the second Dropbox 121, central axis A-A is passed through The geometric center of second choked flow film 122, and central axis A-A, perpendicular to the plane where the second choked flow film 122, mark structure 20 is also Including at least two second markers 213, each second marker 213 is connected with the second Dropbox 121, or, each second marker 213 are connected with the second choked flow film 122.

In the present embodiment, central axis A-A passes through the geometric center of the second Dropbox 121, and central axis A-A is perpendicular to the second net Plane where disk 121, so that plane where the second Dropbox 121 is perpendicular to projection plane, each second marker 213 is with the Two Dropbox 121 are connected, and projection of each second marker 213 in projection plane may make to be located on same straightway.Similarly may be used Know, central axis A-A passes through the geometric center of the second choked flow film 122, and central axis A-A is perpendicular to 122 place of the second choked flow film Plane may make plane where the second choked flow film 122 perpendicular to projection plane, each second marker 213 with the second choked flow Film 122 is connected, and projection of each second marker 213 in projection plane may make to be located on same straightway.

It is to be appreciated that each second marker 213 is both secured in the second Dropbox 121, in the natural shape of plugging device 100 Under state, as shown in Figure 1, the edge that the distance between each second marker 213 and central axis A-A are equal to the second Dropbox 121 arrives The distance of the geometric center of second Dropbox 121.In the present embodiment, plugging device 100 under natural conditions, each second marker The distance between 213 and central axis A-A are equal at a distance from the edge to the geometric center of the second Dropbox 121 of the second Dropbox 121, During surgery, when the edge of the second Dropbox 121 is bonded with atrial septum 300, it is ensured that each second marker 213 is and room Every 300 fittings, the accuracy of the second marker 213 guidance can be improved.

It is to be appreciated that central axis A-A passes through the geometric center of the second Dropbox 121, and central axis A-A is perpendicular to the second net Plane where disk 121, each second marker 213 are both secured in the second Dropbox 121, plugging device 100 under natural conditions, The distance between each second marker 213 and central axis A-A are respectively less than the edge of the second Dropbox 121 to the several of the second Dropbox 121 The distance at what center.In the present embodiment, plugging device 100 under natural conditions, each second marker 213 and central axis A-A The distance between be respectively less than the second Dropbox 121 edge to the second Dropbox 121 geometric center distance, when the second Dropbox 121 When in sheath 400, it can rub to avoid the second marker 213 and the inner wall of sheath 400, and then avoid the second label Object 213 falls off.

It is to be appreciated that each second marker 213 is both secured on the second choked flow film 122, in the nature of plugging device 100 Under state, the distance between at least one and central axis A-A are equal to the edge of the second choked flow film 122 in each second marker 213 To the distance of the geometric center of the second choked flow film 122, or, the distance between each second marker 213 and central axis A-A are small In the distance of the geometric center at the edge of the second choked flow film 122 to the second choked flow film 122.

Preferably, plugging device 100 under natural conditions, the distance between each second marker 213 and central axis A-A are equal Less than the second choked flow film 122 edge to the second choked flow film 122 geometric center distance, each second marker 213 is along second Circle distribution, the second circumference are arranged concentrically with the second choked flow film 122.In the present embodiment, each second marker 213 and central axis A- The distance between A be respectively less than the second choked flow film 122 edge to the second choked flow film 122 geometric center distance, it is each second mark Note object 213 is respectively positioned on one second circumference, can be to avoid the second marker when the second choked flow film 122 is located in sheath 400 213 rub with the inner wall of sheath 400, and then the second marker 213 is avoided to fall off.

Preferably, each second marker 213 is along the second circumference equidistantly distributed, the range of the quantity of the second marker 213 It is 2 to 12.

It is to be appreciated that as shown in Figure 1, blocking unit 10 further includes waist 131 and third choked flow film 132, waist 131 Both ends are connected with the first Dropbox 111 and the second Dropbox 121 respectively, and third choked flow film 132 is set in waist 131, mark structure 20 It further include at least two third markers 214, central axis A-A passes through the geometric center of third choked flow film 132, and central axis A-A Perpendicular to the plane where third choked flow film 132, each third marker 214 is connected with waist 131, or, each third marker 214 are connected with third choked flow film 132.

In the present embodiment, central axis A-A passes through the geometric center of third choked flow film 132, and central axis A-A is perpendicular to the Plane where three choked flow film 132 may make the plane at 132 place of third choked flow film perpendicular to projection plane, each third label Object 214 is connected with third choked flow film 132, and projection of each second marker 213 in projection plane may make to be located at always On line segment.During surgery, (i.e. the first subelement 11 and 300 phase of atrial septum when the first subelement 11 reaches expected position Patch), by adjusting parameters such as the angles of DSA probe, so that the straight line and first that third marker 214 is formed in projection plane The straight line that marker 212 is formed is parallel to each other, and patient can judge third marker 214 by the size of the spacing between two straight lines With the relative position of atrial septum 300, and then the relative position of waist 131 and third choked flow film 132 and atrial septum 300 is judged.

It is to be appreciated that each third marker 214 is connected with third choked flow film 132, in the natural shape of plugging device 100 Under state, the edge that the distance between at least one and central axis A-A are equal to third choked flow film 132 in each third marker 214 is arrived The distance of the geometric center of third choked flow film 132, or, the distance between each third marker 214 and central axis A-A are respectively less than The edge of third choked flow film 132 to third choked flow film 132 geometric center distance.

In the present embodiment, when the distance between third marker 214 and central axis A-A are equal to the side of third choked flow film 132 Edge to third choked flow film 132 geometric center apart from when, help to improve third marker 214 guidance operation it is accurate Property, when the distance between third marker 214 and central axis A-A are less than the edge of third choked flow film 132 to third choked flow film 132 Geometric center apart from when, can be to avoid the inner wall of third marker 214 and sheath 400 during the release of waist 131 It rubs, can prevent third marker 214 from falling off.

In one embodiment, third choked flow film 132 is rounded, and central axis A-A passes through the center of circle of third choked flow film 132 (in i.e. Mandrel A-A passes through the geometric center of third choked flow film 132), and central axis A-A is perpendicular to the plane where third choked flow film 132, Each third marker 214 is fixed on third choked flow film 132 along a circumference, and the diameter of each 214 place circumference of third marker is small In the diameter 1-8mm of third choked flow film 132.It, can be to avoid third marker 214 and sheath during the release of waist 131 400 inner wall rubs, and can prevent third marker 214 from falling off.

Certainly, in another embodiment, waist 131 is rounded, and central axis A-A passes through the center of circle (the i.e. central axis of waist 131 A-A passes through the geometric center of waist 131), each third marker 214 is fixed on waist 131 along a circumference, each third marker The diameter of 214 place circumference is less than the diameter 1-8mm of waist 131.It, can be to avoid third mark during the release of waist 131 Note object 214 and the inner wall of sheath 400 rub, and can prevent third marker 214 from falling off.

Preferably, as shown in fig. 7, in an embodiment, the first marker 212, the second marker 213 and third marker 214 quantity is 2, plugging device 100 under natural conditions, two first markers 212 are located at the first choked flow film 112 The both ends of same diameter, two second markers 213 are located at the both ends of the same diameter of the second choked flow film 122, two third markers 214 are located at the both ends of the same diameter of third choked flow film 132, and two first markers 212, two second markers 213 and two the Three markers 214 are coplanar.

In the present embodiment, two first markers 212, two second markers 213 and two third markers 214 are coplanar, have Help improve the accuracy for the form that may determine that the first Dropbox 111, the second Dropbox 121 and waist 131.

As shown in Figure 1, plugging device 100 further includes bolt head 151, bolt head 151 is fixed on the proximal end for blocking unit 10, conveyer It further include the delivery head made of developing material, delivery head is threadedly coupled with the bolt head 151.

It is to be appreciated that plugging device 100 further includes locking pin 161, the connection envelope of locking pin 161 as shown in Fig. 1 and Fig. 4 a Between first 141 and bolt head 151, mark structure 20 further includes the proximal marker being set in bolt head 151, can be marked by proximal end Relative position between note object and delivery head judges whether plugging device 100 is smoothly detached with conveyer.

It is to be appreciated that first choked flow film 112 follows the first Dropbox 111 1 during the release of the first Dropbox 111 Release is played, similarly, during the release of the second Dropbox 121, the second choked flow film 122 also follows the second Dropbox 121 to discharge together, waist When portion 131 discharges, third choked flow film 132 follows waist 131 to discharge together.

It is to be appreciated that the first Dropbox 111, the second Dropbox 121 and waist 131 can be using braiding, the modes such as cutting It is prepared, by taking braiding as an example, the material of braided wires can be NiTi alloy, Co-Cr alloy, the nondegradable gold such as stainless steel Belong to material, biodegradable material can also be used.

When first Dropbox 111, the second Dropbox 121 and waist 131 are biodegradable material, biodegradable material includes But it is not limited to polylactic acid (PLA), ploy DL lactic caid (PDLLA), polyglycolic acid (PGA), poly lactide-glycolide acid (PLGA), poly-hydroxy fatty acid rouge (PHA), polydioxanone (PDO) or polycaprolactone (PCL) etc..The first net after braiding Disk 111, the second Dropbox 121 and waist 131 are shaped into scheduled shape by die & mold treatment.

The material of mark structure 20 can be metallics, such as gold, platinum, barium sulfate etc., or nonmetallic substance, Such as sodium bromide, sodium iodide, Iohexol, iodo object etc..When the first marker 212 is fixed on the first Dropbox 111, the first label Object 212 is fixed on the grid intersection point of the first Dropbox 111, or is wrapped on braiding monofilament, or is welded on braiding monofilament, or coating In braiding monofilament surface.The set-up mode of above-mentioned mark structure 20, structure is simple, solid and reliable, and will not influence closure The overall structure of device 100 itself.

It is to be appreciated that when the second marker 213 is fixed on the second Dropbox 121 or can refer to above-mentioned fixed form, third When marker 214 is fixed on waist 131, above-mentioned fixed form also can refer to, details are not described herein.

It is to be appreciated that fixed form can be packet when the first marker 212 is fixed on the first choked flow film 112 The modes such as bury, be bonded and suture.

Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.

Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (14)

1. a kind of plugging device, including the end socket for blocking unit and being connected with the closure unit, the closure unit has in one Mandrel, the central axis pass through the plugging device proximally and distally, which is characterized in that the plugging device further includes label knot Structure, the mark structure include distal marker and at least two first markers, and the distal marker is set to the end socket On, each first marker is connected with the closure unit, and each first marker is respectively positioned in same holding plane, The holding plane is located at except the holding plane perpendicular to the central axis, the distal marker, each first mark Note object be located on a straightway in the subpoint in a projection plane perpendicular to the holding plane, the plugging device oneself Under right state, the distal marker and the line of the two-end-point of the straightway are triangular in shape.

2. plugging device as described in claim 1, which is characterized in that the closure unit include the first subelement, described first Subelement includes the first Dropbox and the first choked flow film in first Dropbox, and the central axis passes through first Dropbox Geometric center, and the central axis, in the plane where first Dropbox, the central axis passes through first resistance The geometric center of film is flowed, and the central axis, in the plane where the first choked flow film, each first marker is equal It is connected with first Dropbox, or, each first marker is connected with the first choked flow film.

3. plugging device as claimed in claim 2, which is characterized in that each first marker is both secured to first Dropbox On, the plugging device under natural conditions, the distance between each first marker and the central axis are equal to or Less than first Dropbox edge to first Dropbox geometric center distance.

4. plugging device as claimed in claim 2, which is characterized in that each first marker is both secured to first choked flow On film, the plugging device under natural conditions, at least one in each first marker between the central axis away from With a distance from the edge to the geometric center of the first choked flow film for being equal to the first choked flow film, or, each first label The distance between object and the central axis are respectively less than the edge of the first choked flow film to the geometric center of the first choked flow film Distance.

5. plugging device as claimed in claim 4, which is characterized in that the plugging device under natural conditions, each described first The distance between marker and the central axis are respectively less than the edge of the first choked flow film to the geometry of the first choked flow film The distance at center, each first marker along the first circle distribution, first circumference with the first choked flow film is concentric sets It sets.

6. plugging device as claimed in claim 5, which is characterized in that each first marker is equidistant along first circumference Distribution, the range of the quantity of first marker is 2 to 12.

7. plugging device as claimed in claim 2, which is characterized in that the closure unit further includes and the first subelement phase The second subelement even, second subelement includes the second Dropbox and the second choked flow film in second Dropbox, institute State the geometric center that central axis passes through second Dropbox, and the central axis is in the plane where second Dropbox, The central axis passes through the geometric center of the second choked flow film, and the central axis is where the second choked flow film Plane, the mark structure further include at least two second markers, each second marker with the second Dropbox phase Even, or, each second marker is connected with the second choked flow film.

8. plugging device as claimed in claim 7, which is characterized in that each second marker is both secured to second Dropbox On, the plugging device under natural conditions, the distance between each second marker and the central axis are equal to or Less than second Dropbox edge to second Dropbox geometric center distance.

9. plugging device as claimed in claim 7, which is characterized in that each second marker is both secured to second choked flow On film, the plugging device under natural conditions, at least one in each second marker between the central axis away from With a distance from the edge to the geometric center of the second choked flow film for being equal to the second choked flow film, or, each second label The distance between object and the central axis are respectively less than the edge of the second choked flow film to the geometric center of the second choked flow film Distance.

10. plugging device as claimed in claim 9, which is characterized in that the plugging device under natural conditions, each described second The distance between marker and the central axis are respectively less than the edge of the second choked flow film to the geometry of the second choked flow film The distance at center, each second marker along the second circle distribution, second circumference with the second choked flow film is concentric sets It sets.

11. plugging device as claimed in claim 10, which is characterized in that each second marker is between described second circumference etc. Away from distribution, the range of the quantity of second marker is 2 to 12.

12. plugging device as claimed in claim 7, which is characterized in that the closure unit further includes waist and third choked flow film, The both ends of the waist are connected with first Dropbox and second Dropbox respectively, and the third choked flow film is set to the waist In, the central axis passes through the geometric center of the third choked flow film, and the central axis is in third choked flow film institute Plane, the mark structure further includes at least two third markers, each third marker with the waist phase Even, or, each third marker is connected with the third choked flow film.

13. plugging device as claimed in claim 12, which is characterized in that each third marker with the third choked flow film Be connected, the plugging device under natural conditions, at least one in each third marker between the central axis away from With a distance from the edge to the geometric center of the third choked flow film for being equal to the third choked flow film, or, each third label The distance between object and the central axis are respectively less than the edge of the third choked flow film to the geometric center of the third choked flow film Distance.

14. plugging device as claimed in claim 12, which is characterized in that first marker, the second marker and described The quantity of three markers is 2, the plugging device under natural conditions, two first markers be located at it is described first resistance The both ends of the same diameter of film are flowed, two second markers are located at the both ends of the same diameter of the second choked flow film, two institutes State the both ends that third marker is located at the same diameter of the third choked flow film, and two first markers, two described second Marker and the two third markers are coplanar.