CN205903273U - Degradable heart atrial septal defect plugging device - Google Patents
Degradable heart atrial septal defect plugging device Download PDFInfo
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- CN205903273U CN205903273U CN201620008245.3U CN201620008245U CN205903273U CN 205903273 U CN205903273 U CN 205903273U CN 201620008245 U CN201620008245 U CN 201620008245U CN 205903273 U CN205903273 U CN 205903273U
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Abstract
The utility model discloses a degradable heart atrial septal defect plugging device, it is double guard with second disc net including first disc of connecting gradually net, tubulose net and second disc net, first disc net, and the both ends of tubulose net are connected respectively in the interior wire side of first disc net and the outer wire side of second disc net, and first disc net, tubulose net and second disc are netted and are integrated into one piece, the connecting piece that is used for the wire side binding off is located to be equipped with in the interior wire side center of second disc net, and the connecting piece is by shaping the forming of dictyosome hot melt of the interior wire side center department of second disc net, the outer wire side center department of first disc net is equipped with the connector that is used for the wire side binding off, the material of first disc net, tubulose net, second disc net and connecting piece is the degradation material. The utility model discloses not only make the degradable silk of constituteing the disc net firmly link together, make the connecting piece and the degradable silk of constitution disc net firmly link together moreover, be difficult to drop.
Description
Technical field
This utility model is related to a kind of heart atrial septal defect plugging device of degradable.
Background technology
Atrial septal defect is one of common congenital heart disease.Human heart is made up of four chambers, that is,
Left atrium, left ventricle, right atrium and right ventricle, between left atrium wherein above and right atrium two chambers, originally should
This has a complete interatrial septum, is referred to as atrial septal defect if having opening on heart interatrial septum.Atrial septal defect master
In the growth and development process of fetus to be formed at, developed due to be have impact on heart by certain factor, thus form interatrial septum lacking
Damage.For the patient of atrial septal defect, blood would generally flow to right atrium by left atrium through atrial septal defect, makes right atrium
Blood volume increase.The long-term existence of atrial septal defect can cause pulmonary artery pressure to increase, congestive heart failure, the rhythm of the heart lose
Often, the disease such as apoplexy, dizziness, faintness.
Heart atrial septal defect is common congenital heart disease, and traditional therapeutic modality is surgical operation.Surgical operation
Therapeutic Method, patient need to surgically open breast, and its maximum shortcoming is: need extracorporeal circulation in (1) art, operation may
Complication is caused to lead to death；(2) surgery operating wound is big, postoperative leaves cicatrix；(3) surgery cost is expensive.
From the eighties in 20th century with intubation intervention diagnosis and the development for the treatment of technology and raising, China is gradually introducing minimally invasive
Interventional technique treats congenital heart disease, is developed rapidly by the method for Minimally Interventional Therapy atrial septal defect, becomes very much
Ripe.Compare traditional surgery, Minimally Interventional Therapy is a kind for the treatment of of modern high technology invasive, by femoral venous puncture,
Under the guiding of medical imaging device, by guide wire along femoral vein, postcava until entering right atrium, through atrial septal defect
Enter left atrium.Subsequently delivery conduit is placed in atrial septal defect position along guide wire, finally by atrial septal defect plugging device
Enforcement Occlusion therapy at atrial septal defect is pushed in delivery conduit.Such Minimally Interventional Therapy have do not operate on, wound
Little, few intercurrent disease, recover fast, effect is good, indication scope wide and the relatively low advantage of surgery cost.
Though by minimally invasive intervention operation implantation atrial septal defect plugging device Therapeutic Method have many of the above with respect to tradition
The advantage of surgical operation.But, due to the material master used by the main body rack of the atrial septal defect plugging device of present Clinical practice
Nitinol alloy wire to be, because this metalloid material can not be degraded, be chronically implanted can and tissue be inflamed, blood coagulation etc. anti-
Should, even a certain degree of damage, therefore there is certain defect, it is it is possible to have risk used below: (1) NiTi
Alloy be nondegradable metal alloy compositions although its biocompatibility prove, but long term of long-term Permanent implantation
Risk still cannot be perfectly controlled；(2) due to Nitinol Permanent implantation and non-degradable, forever retain heart to human body
Safety, the impact of the heart to the continuous growth promoter of child for the fixed-size heart occluder still lack long-term follow-up money
Material, it may affect the growing of the patient's heart of undeveloped mature；(3) complication such as nickel precipitation, nickel allergy has not yet
Clearly scientific appraisal.
On heart occluder surface by complete endothelialization, after heart defect is repaired by body autologous tissue, heart blocks
Necessity that device is not retained completely in vivo.Therefore, preferable heart occluder should be to repair for heart itself to provide one
Temporary bridge, is degraded by body after completing historic mission, so that defect is repaired by autologous tissue completely, thus avoiding metal to retain body
The long term complication inside bringing and potential safety hazard.
The supporting construction of the degradable stopper introduced in United States Patent (USP) us08480709b2 is formed by pipe cutting, closure
The junction point of two cards of device is similar with dual welding spots, makes two card centers raised, can increase stopper surface local thrombus
The risk being formed, is unfavorable for the endothelialization process on stopper surface, makes the release of stopper during implant surgery meanwhile
Length is longer, easy impair cardiac tissue, and the stopper compliance being fabricated to by this method and recovery poor, need
Locking device to be passed through assists it to reply original shape.
Utility model content
The technical problems to be solved in the utility model is to deposit to solve the atrial septal defect plugging device of existing Clinical practice
In the problem of long term risk, and prior art is overcome to there is the compliance of degradable stopper and the defect that recovery is poor,
A kind of heart atrial septal defect plugging device of degradable is provided.
This utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of heart atrial septal defect plugging device of degradable, its feature is, it includes one first disk being sequentially connected
Shape net, a tubular reticulum and one second plate-like net, described first plate-like net and described second plate-like net are double-deck guard, described pipe
The two ends of shape net are connected to the interior wire side of described first plate-like net and the outer wire side of described second plate-like net, described first disk
Shape net, described tubular reticulum and described second plate-like net are formed in one；The interior wire side center of described second plate-like net is provided with use
In the connector that wire side closes up, described connector shaped by the dictyosome hot melt of the interior wire side center of described second plate-like net and
Become, described connector is provided with female thread in the end relative with the wire side connecting；The outer wire side center of described first plate-like net
Be provided with the union joint for wire side closes up, described union joint by described first plate-like net outer wire side center dictyosome hot melt
Shaping forms；Described first plate-like net, the material of tubular reticulum, the second plate-like net and connector are degradation material.
It is preferred that described connector is tubulose, the height of described connector is 1.5-2.0mm.So make the second plate-like
There is enough intensity at the interior wire side closing in of net.If the height of connector is too small, the thread turns within connector is very few, meeting
Cause and be connected insecure with induction system and there is the risk that stopper comes off.Whereas if the height of connector is excessive, can increase
Plus the risk that stopper surface local thrombus are formed, the side stopper superficial cell climbing with connector can be caused relatively slow,
Extend the endothelialization process on stopper surface.Meanwhile, make the release length of stopper longer, easily during implant surgery
Impair cardiac is organized.
It is preferred that the external diameter of described connector is 2.5-3.2mm.So make to have at the interior wire side closing in of the second plate-like net
Enough intensity.If additionally, connector outside dimension is too small, being easily caused and be connected with connector during connecting member forming
Degraded silk occur fracture or bonding strength decline.Whereas if connector outside dimension is excessive, stopper can be reduced and be suitable for
The size range of delivery sheath, and it is unfavorable for push in delivery sheath for the stopper.
It is preferred that the Intranet of described first plate-like net faces depression, the Intranet of described second plate-like net at described tubular reticulum
Face depression at described connector.The wire side of depression is so that stopper can stably and firmly be plugged in heart room when using
At defect.
It is preferred that the external diameter 4-6mm bigger than the external diameter of described second plate-like net of described first plate-like net.First plate-like net position
In heart left atrium, the second plate-like net is located at heart right atrium, and heart left atrial pressure is greater than right atrial pressure, make blood by
Left atrium enters right atrium through atrial septal defect, thus this structure so that the first plate-like net positioned at left atrium is had larger
Support force, can resist the impact of blood flow, be conducive to stopper to be firmly clamped at atrial septal defect, realize effectively sealing
Stifled.
It is preferred that the external diameter 10-16mm bigger than the external diameter of described tubular reticulum of described first plate-like net.The diameter one of tubular reticulum
As corresponding with the diameter of atrial septal defect, the external diameter of the first plate-like net needs, this structure larger than the external diameter of tubular reticulum
Make the first plate-like net positioned at left atrium have larger support force, the impact of blood flow can be resisted, be conducive to stopper firm
Be clamped at atrial septal defect, realize effectively blocking.
It is preferred that the length of described tubular reticulum is 3.5-5.5mm.The thickness that this length is organized with atrial septal defect is relative
Should, to make stopper preferably be fixed at defect not damaging tissue, and realize effectively blocking.
It is preferred that one first described plate-like net, the material of a tubular reticulum, one second plate-like net and described connector are
High molecular degradable silk.Biodegradable polymer material be polylactic acid, polyglycolic acid, polycaprolactone, PPDO,
One of poly butyric ester, condensing model, poly phosphate, polyurethane, Merlon or at least two copolymer.These materials
Material has good biocompatibility, can fully absorb in human body, it is to avoid the implantation long-term impact on human body for the foreign body.This
Kind of stopper simply provides a temporary bridge for cardiac repair, is degraded by body after completing historic mission, make defect completely by
Autologous tissue repairs, thus avoiding metal to retain the long term complication bringing in vivo and potential safety hazard.
A kind of webmaster weaving method, including in the pinhole that pin inserts mould rod, degradable silk is penetrated sewing needle pin
Hole, knotting simultaneously closely connects.Starting point degradable silk is closely tied a knot, and during braiding, uplink and the intersection point of downlink are marked with center
Note point alignment, with the trend of specification silk.Woven webmaster carries out thermal finalization together with mould rod.After stereotyped, pull out pin,
Take off webmaster.This weaving method makes the grid of webmaster more uniformly it is easy to operation, decreases cost of manufacture.
A kind of manufacture method of connector, making step includes:
Step 1, webmaster is closed up；
Step 2, webmaster is put into mould；
Step 3, finishing dictyosome；
Step 4, heating degradable silk；
Step 5, molding connector profile and internal whorl；
Step 6, removal dictyosome；
It is preferred that in step 1, first adjusting the closing in end margin length of webmaster, making justified margin, being closed up with degradable silk.
It is preferred that in step 2, by the webmaster having closed up, through the sleeve pipe in mould.
It is preferred that in step 3, original assembling length staying a part for making connector, removing the unnecessary of webmaster
Length.
It is preferred that in step 4, opening attemperating unit, adjust temperature, against the degradable silk at connector above mould
Continuous heating, wherein, adjustment temperature is 5-15 second continuous heating time 40 DEG C -100 DEG C on high molecular polymer fusing point, plus
In thermal process, over-heating can lead to the other parts hot melt together of dictyosome, thus leading to dictyosome destructurized, and greatly
Reduce the material molecule amount of connector part, material premature breakdown can be caused.Conversely, heating is insufficient, can lead at connector
Degradable silk can not fully hot melt be integrated it is impossible to form complete connector female thread structure, cause connector with defeated
Send the bonding strength of system inadequate.Accordingly, it would be desirable to suitable acid extraction just can complete hot melt.
It is preferred that in step 5, after continuous heating, the degradable silk of connector part is fused together, remove temperature control dress
Put, be then shut off the slide block in mould, and the thread head of mould is inserted in the slot above mould, keep a period of time.
It is preferred that in step 6, after cooling, by the thread head rotation removal mould of mould, and slide block is slowly removed,
Dictyosome is removed mould.
The manufacture method of this connector is easily operated, can obtain the connector of dimensionally stable, and decrease stopper
The species of upper use material, enables the degradable silk of the discoid net of group to be securely attached to together, and makes connector and composition
The degradable silk of plate-like net can be securely attached to together it is not easy to come off.
A kind of dictyosome method for shaping, is packed into dictyosome shaper including the dictyosome with connector, and solid with fixture
Fixed, it is carried out together thermal finalization, stereotyped after, dictyosome is removed from the molds.With suture, degradable membrane is packed into dictyosome,
And carry out closing up as a solid union joint at closing in end.This dictyosome method for shaping is easily operated, the occluder size of making
Stable, larger support force and preferable recovery of shape are had by the stopper that this kind of method makes, meets operation technique
Require, make operation more effective, safer.
Positive effect of the present utility model is:
This utility model stopper is knitted to form by high molecular degradable silk, and its biodegradation period is 6 months to 2 years,
Can fully absorb in human body, it is to avoid the implantation long-term impact on human body for the foreign body.The degradable that this utility model is used
Or the absorbable material of human body, nontoxic to human body, there is good biocompatibility.The choked flow film of stopper is biological
Degradable membrane, its biodegradation period is 6 months to 2 years, and after completing its treatment mission in human body, degradation in vivo disappears, no
Retained foreign body.Dictyosome in the interior wire side center of the second plate-like net is connector through high temperature sweat soldering, specifically, leads to
Cross the dictyosome hot melt at high temperature of the interior wire side center to the second plate-like net, and with mould, heat-fused portion dictyosome is shaped into even
Fitting, so makes the degradable silk of the discoid net of group be not easy to scatter, can be securely attached together；Simultaneously so that connector
Can be securely attached together it is not easy to come off with the degradable silk organizing discoid net.The wire side being not installed with connector adopts
The structure that union joint closes up, can increase support force and the recovery of stopper.Additionally, this stopper also has low cost of manufacture
Advantage.
Brief description
Fig. 1 is the stopper perspective view of this utility model preferred embodiment.
Fig. 2 is the connector schematic diagram of the stopper of this utility model preferred embodiment.
Fig. 3 is a direction view in Fig. 1.
Fig. 4 is the union joint schematic diagram of the stopper of this utility model preferred embodiment.
Fig. 5 is the mould rod structural representation of this utility model preferred embodiment.
Fig. 6 is the braiding threading schematic diagram of the webmaster of this utility model preferred embodiment.
Fig. 7 is the closing in end expanded schematic diagram of the webmaster of this utility model preferred embodiment.
Specific embodiment
Name a preferred embodiment, and combine accompanying drawing to become apparent from intactly illustrating this utility model.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of heart atrial septal defect plugging device of degradable, it includes being sequentially connected
The first plate-like net 10, tubular reticulum 30 and the second plate-like net 20, the first plate-like net 10 and the second plate-like net 20 be double-deck guard,
The two ends of tubular reticulum 30 are connected to the interior wire side 11 of the first plate-like net 10 and the outer wire side 22 of the second plate-like net 20, the first disk
Shape net 10, tubular reticulum 30 and the second plate-like net 20 are formed in one；Interior wire side 21 center of the second plate-like net 20 is provided with net
The connector 40 closing up in face, is connected for sweat soldering between the interior wire side 21 of the second plate-like net 20 and connector 40；Connector 40
Shaped by the dictyosome hot melt of the interior wire side center of the second plate-like net 20 and form, connector 40 is at the end relative with the wire side connecting
Portion is provided with female thread；Outer wire side 12 center of the first plate-like net 10 is provided with the union joint 13 for wire side closes up, union joint
13 are formed by the dictyosome hot melt shaping of outer wire side 12 center of the first plate-like net 10；First plate-like net 10, tubular reticulum 30, second
The material of plate-like net 20 and connector 40 is degradation material.
The dictyosome of the interior wire side center in the second plate-like net 20 for the stopper of the present utility model is through high temperature sweat soldering
For connector, specifically, by the dictyosome hot melt at high temperature of the interior wire side center to the second plate-like net 20, and use mould
Heat-fused portion dictyosome is shaped into connector 40, so makes the degradable silk of the discoid net of group be not easy to scatter, can connect securely
It is connected together；Simultaneously so that connector 40 can be securely attached together with the degradable silk organizing discoid net it is not easy to take off
Fall.
Connector 40 is tubulose, and highly for 1.5-2.0mm, external diameter is 2.5-3.2mm.The interior wire side 11 of the first plate-like net 10
It is recessed towards at tubular reticulum 30, the interior wire side 21 of the second plate-like net 20 is recessed towards at connector 40.The external diameter ratio of the first plate-like net 10
The big 4-6mm of external diameter of the second plate-like net 20；The external diameter 10-16mm bigger than the external diameter of tubular reticulum 30 of the first plate-like net 10；Tubular reticulum
30 length is 3.5-5.5mm.Connector 40 is tubulose, and connector 40 is provided with interior spiral shell in the end relative with the wire side 21 connecting
Stricture of vagina.
The material of the first plate-like net 10, tubular reticulum 30 and the second plate-like net 20 and connector 40 is high molecular degradable
Silk.Biodegradable polymer material is polylactic acid, polyglycolic acid, polycaprolactone, PPDO, poly butyric
One of ester, condensing model, poly phosphate, polyurethane, Merlon or at least two copolymer.Can fill poly- in stopper
Lactic acid film is thus play the effect stopping blood flow.
This utility model connector is to be formed by degradable silk hot melt, and needs to meet use condition, not only structure
Excessive can not lead to hinder push in delivery sheath for the stopper, also will avoid the connector not leading to because of bonding strength
Pull.
Table 1, connector size, anti-pulling-out force and push test table in delivery sheath
| Height mm | External diameter mm | Anti- pulling-out force n | Whether obstruction pushes | |
| 1 | 2.0 | 1.8 | 6 (weak) | Do not hinder |
| 2 | 2.0 | 2.0 | 11 (weak) | Do not hinder |
| 3 | 2.0 | 2.5 | 25 (strong) | Do not hinder |
| 4 | 1.5 | 2.5 | 20 (strong) | Do not hinder |
| 5 | 1.8 | 2.8 | 31 (strong) | Do not hinder |
| 6 | 1.5 | 3.0 | 34 (strong) | Do not hinder |
| 7 | 2.0 | 3.2 | 41 (strong) | Do not hinder |
| 8 | 2.0 | 3.5 | 52 (strong) | Hinder |
Find in test, ensure that in use, connector will not be pulled when anti-pulling-out force reaches 15n.By upper table
Can see in 1 that the size of connector directly influences whether stopper can normally apply among operation.Connector
Inappropriate size design connector can be led to be pulled, or cannot be introduced into being pushed in delivery sheath, these all can
Lead to product cannot use.
This stopper first mesh-covered tray is continuously netted face, adopts union joint to close up, this structure is favourable between its netting twine
Improve in the reply of stopper shapes and support force.Stopper of the present utility model is in the interior wire side center of the second plate-like net
Dictyosome is connector through high temperature sweat soldering, specifically, is existed by the dictyosome of the interior wire side center to the second plate-like net
Hot melt under high temperature, and with mould, heat-fused portion dictyosome is shaped into connector, so that the degradable silk of the discoid net of group is not allowed
Easily scatter, can be securely attached together；Simultaneously so that connector can be securely attached to the degradable silk organizing discoid net
Together it is not easy to come off.
The making of this utility model stopper is mainly through webmaster molding, connector making, dictyosome sizing and polylactic acid membrane
Sew several steps.
During webmaster braiding, by the pin insertion such as pinhole 51 of the mould rod 5 of Fig. 5, degradable silk is penetrated sewing needle pin
Hole, knotting simultaneously closely connects.The threading rule of braiding is as shown in fig. 6, include connector manufacturing terminal d, closing in end b (becomes after molding
For union joint 13) and starting point c.Closely tied a knot with degradable silk at starting point c, the intersection point of uplink and downlink and center during braiding
Labelling point aligns, with the trend of specification silk.Woven webmaster carries out thermal finalization together with mould rod.After stereotyped, pull out pin
Son, takes off webmaster.
Connector making step includes:
1st, webmaster is closed up；
2nd, webmaster is put into mould；
3rd, repair dictyosome；
4th, heat degradable silk；
5th, molding connector profile and internal whorl；
6th, remove dictyosome；
Wherein, in step 1, first adjust the closing in end margin length of webmaster, make justified margin, closed up with degradable silk, tool
As shown in fig. 7, including going out pin mark 61 and entry point 62, the order of threading is according to going out pin mark in Fig. 7 for the closing in mode of body
61 and entry point 62 closed up.In step 2, by the webmaster having closed up, through the sleeve pipe in mould.In step 3, former
Have in assembling length and stay a part for making connector, remove the additional length of webmaster.In step 4, open attemperating unit, adjust
Whole temperature, against the degradable silk continuous heating at connector above mould.In step 5, after continuous heating, connector portion
The degradable silk dividing is fused together, and removes attemperating unit, is then shut off the slide block in mould, and the thread head insertion by mould
In slot above mould, keep a period of time.In step 6, after cooling, by the thread head rotation removal mould of mould, and
Slide block is slowly removed, dictyosome is removed mould.
Additionally, in step 4, adjustment temperature is continuous heating time 5- 40 DEG C -100 DEG C on high molecular polymer fusing point
15 seconds.Shown in table 2- table 4 specific as follows, in heating process, over-heating can lead to the other parts hot melt together of dictyosome, thus
Lead to dictyosome destructurized, and greatly reduce the material molecule amount of connector part, thus material premature breakdown can be caused.
Conversely, heating is insufficient, the degradable silk at connector can be led to can not fully hot melt to be integrated it is impossible to be formed complete
Connector female thread structure, causes connector inadequate with the bonding strength of induction system.Accordingly, it would be desirable to suitable heating-up temperature and
Time just can complete hot melt.
Table 2, l- lactide/glycolides (82/18) degradation material hot melt test table
| Heat time heating time s | Heating-up temperature DEG C | Connector hot melt situation | Other parts hot melt situation | |
| 1 | 2 | 240 | Inabundant hot melt | Non- hot melt |
| 2 | 15 | 170 | Inabundant hot melt | Non- hot melt |
| 3 | 5 | 240 | Fully hot melt | Non- hot melt |
| 4 | 5 | 180 | Fully hot melt | Non- hot melt |
| 5 | 15 | 240 | Fully hot melt | Non- hot melt |
| 6 | 15 | 180 | Fully hot melt | Non- hot melt |
| 7 | 5 | 250 | Fully hot melt | Part holt melt |
| 8 | 20 | 180 | Fully hot melt | Part holt melt |
Table 3, PPDO degradation material hot melt test table
| Heat time heating time s | Heating-up temperature DEG C | Connector hot melt situation | Other parts hot melt situation | |
| 1 | 2 | 200 | Inabundant hot melt | Non- hot melt |
| 2 | 15 | 130 | Inabundant hot melt | Non- hot melt |
| 3 | 5 | 200 | Fully hot melt | Non- hot melt |
| 4 | 5 | 140 | Fully hot melt | Non- hot melt |
| 5 | 15 | 200 | Fully hot melt | Non- hot melt |
| 6 | 15 | 140 | Fully hot melt | Non- hot melt |
| 7 | 5 | 210 | Fully hot melt | Part holt melt |
| 8 | 20 | 140 | Fully hot melt | Part holt melt |
Table 4, l- lactide/caprolactone (70/30) degradation material hot melt test table
| Heat time heating time s | Heating-up temperature DEG C | Connector hot melt situation | Other parts hot melt situation | |
| 1 | 2 | 210 | Inabundant hot melt | Non- hot melt |
| 2 | 15 | 140 | Inabundant hot melt | Non- hot melt |
| 3 | 5 | 210 | Fully hot melt | Non- hot melt |
| 4 | 5 | 150 | Fully hot melt | Non- hot melt |
| 5 | 15 | 210 | Fully hot melt | Non- hot melt |
| 6 | 15 | 150 | Fully hot melt | Non- hot melt |
| 7 | 5 | 220 | Fully hot melt | Part holt melt |
| 8 | 20 | 150 | Fully hot melt | Part holt melt |
Dictyosome sizing includes mould and dictyosome heat treatment shaping on dictyosome.On dictyosome during mould, the aforementioned net with connector
Body is packed into dictyosome shaper, and is fixed with fixture, it is carried out together thermal finalization, stereotyped after, by dictyosome from mould
Take out.With suture, polylactic acid membrane is packed into dictyosome, and carries out closing up as a union joint at closing in end.
In description of the present utility model it is to be understood that term " on ", D score, "front", "rear", "left", "right",
The orientation of instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of and describes this utility model and simplify description, rather than instruction or the device or the unit that imply indication
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and protection domain of the present utility model is defined by the appended claims.Those skilled in the art
On the premise of without departing substantially from principle of the present utility model and essence, various changes or modifications can be made to these embodiments,
But these changes and modification each fall within protection domain of the present utility model.
Claims (8)
1. a kind of heart atrial septal defect plugging device of degradable is it is characterised in that it includes one first plate-like being sequentially connected
Net, a tubular reticulum and one second plate-like net, described first plate-like net and described second plate-like net are double-deck guard, described tubulose
The two ends of net are connected to the interior wire side of described first plate-like net and the outer wire side of described second plate-like net, described first plate-like
Net, described tubular reticulum and described second plate-like net are formed in one；The interior wire side center of described second plate-like net be provided with for
The connector that wire side is closed up, described connector by described second plate-like net interior wire side center dictyosome hot melt shape and
Become, described connector is provided with female thread in the end relative with the wire side connecting；The outer wire side center of described first plate-like net
Be provided with the union joint for wire side closes up, described union joint by described first plate-like net outer wire side center dictyosome hot melt
Shaping forms；Described first plate-like net, the material of tubular reticulum, the second plate-like net and connector are degradation material.
2. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that described connector is pipe
Shape, the height of described connector is 1.5-2.0mm.
3. degradable as claimed in claim 2 heart atrial septal defect plugging device it is characterised in that described connector outer
Footpath is 2.5-3.2mm.
4. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that described first plate-like net
Intranet face at described tubular reticulum depression, the Intranet of described second plate-like net faces depression at described connector.
5. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that described first plate-like net
External diameter 4-6mm bigger than the external diameter of described second plate-like net.
6. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that described first plate-like net
External diameter 10-16mm bigger than the external diameter of described tubular reticulum.
7. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that the length of described tubular reticulum
Spend for 3.5-5.5mm.
8. the heart atrial septal defect plugging device of degradable as claimed in claim 1 is it is characterised in that described first plate-like
Net, the material of described tubular reticulum, described second plate-like net and described connector are high molecular degradable silk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620008245.3U CN205903273U (en) | 2016-01-05 | 2016-01-05 | Degradable heart atrial septal defect plugging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620008245.3U CN205903273U (en) | 2016-01-05 | 2016-01-05 | Degradable heart atrial septal defect plugging device |
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| CN205903273U true CN205903273U (en) | 2017-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758193A (en) * | 2019-01-22 | 2019-05-17 | 陈金凤 | A kind of atrial septal defect plugging device |
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- 2016-01-05 CN CN201620008245.3U patent/CN205903273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758193A (en) * | 2019-01-22 | 2019-05-17 | 陈金凤 | A kind of atrial septal defect plugging device |
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Address after: 15th Building, 388 Yindu Road, Xuhui District, Shanghai, 200231 Patentee after: Shanghai Jinkui Medical Devices Co., Ltd. Address before: Room 102, D Workshop, 1618 Yishan Road, Minhang District, Shanghai, 201103 Patentee before: Shanghai Jinkui Medical Implements Co., Ltd. |