CN206414310U - A kind of occluder for left auricle - Google Patents

Abstract

The utility model discloses a kind of occluder for left auricle, including closeouts, connector and fixture；Closeouts are connected with connector；Fixture is set on connector or connector is set on fixture；Occluder for left auricle has first state and the second state；In the second condition, fixture can be relative to connector activity.Occluder for left auricle involved by the utility model is due to connector and fixture to be flexibly connected, closeouts and fixture is enabled more freely to form angle and length, so as to the left auricle of heart suitable for different structure, and reduce the probability of happening of left auricle of heart mouthful plugging device residual leakage.

Description

A kind of occluder for left auricle

Technical field

The utility model is related to a kind of medicine equipment, more particularly to a kind of apparatus for treating heart left auricle of heart lesion, specifically It is a kind of occluder for left auricle that ground, which is said,.

Background technology

Contractile function is lost in atrium during atrial fibrillation, and blood easily in atrium, especially at left auricle of heart, is retarded by silt and forms blood It can cause cerebral embolism, limb artery embolization etc. with blood to whole body everywhere after bolt, thrombus breaks loose, trigger cerebral apoplexy, limbs fiber crops Numbness, severe patient half a lifetime or total paralysis, or even need amputation.In fibrillation patient, more than 90% thrombus ceases manner of breathing with left auricle of heart Close；And as most common perpetual arrhythmia, the incidence of disease of the atrial fibrillation in general population is 0.5% to 1.5%.Pass through envelope Stifled left auricle of heart prevents the formation of the thrombus in left auricle of heart during atrial fibrillation, so that reduce patients with atrial fibrillation triggers long-term residual by thromboembolism Disease or the risk of death.

Differed greatly because the form of left auricle of heart is showed in different individuals, existing plugging device is often difficult in adapt to not With the demand of individual, easily there is portion of residual leakage when blocking left auricle of heart, it is impossible to completely close left auricle of heart, causing can not be complete The formation of thrombus effectively in prevention left auricle of heart.

Utility model content

The utility model is in order to solve the above problems, it is proposed that a kind of new occluder for left auricle so that residual leakage Probability of happening is greatly reduced.

The utility model discloses a kind of occluder for left auricle, including closeouts, connector and fixture；Closeouts and company Fitting is connected；Fixture is set on connector or connector is set on fixture；Occluder for left auricle has the first shape State and the second state；In the second condition, fixture can be relative to connector activity.

Further, connector is stainless steel material.

Further, in the first state, occluder for left auricle is in contraction-like, it is adaptable to convey；In the second condition, it is left Atrial appendage occlusion device is open-shaped, it is adaptable to blocked.

In a preferred embodiment, fixture is set on connector.

Further, connector includes the first linkage section, the second linkage section；The diameter of first linkage section is less than fixture Internal diameter, the diameter of the second linkage section is more than the internal diameter of fixture so that in the second condition, fixture can be on the first linkage section Activity, but will not depart from from the second linkage section and connector.

Further, connector also includes the 3rd linkage section, and the diameter of the 3rd linkage section is equal to the internal diameter of fixture, first Linkage section, the 3rd linkage section, the second linkage section are sequentially connected.

Further, from the diameter of the first linkage section to the diameter of the 3rd linkage section, then it is equal to the diameter of the second linkage section It is continuously, little by little to become big.

Further, the length of the 3rd linkage section is 2~3mm.

In a preferred embodiment, connector includes the first connecting element and the second connecting element；First connection member Part is connected with closeouts；Second connecting element is connected with the first connecting element；Fixture is set in the second connecting element.

Further, the second connecting element is set in the section in fixture to the first end of the second connecting element from it Portion is sequentially set as the first linkage section, the 3rd linkage section and the second linkage section；The diameter of first linkage section is less than fixture Internal diameter, the diameter of the 3rd linkage section is equal to the internal diameter of fixture, and the diameter of the second linkage section is more than the internal diameter of fixture so that Gu Determining part can be movable in the second connecting element, but will not depart from first end with the second connecting element.

Further, closeouts include closure head and closure waist；Closure head is connected with closure waist.

Further, the length of closure waist is 3~5mm.

Further, the cross section of closure waist is circle, and the diameter for blocking the cross section of waist is 14~34mm.

Further, closure head is circle, the big 4~6mm of diameter of cross section of its diameter than blocking waist.

Further, closure waist is in round table-like, and the area of the cross section at its that end being connected with closure head is more than separately The area of the cross section of one end.

Further, closure head is in the form of annular discs.

Further, closure head and closure waist are formed by nitinol alloy wire braiding.

Further, closeouts also include support, the two ends for fixing nitinol alloy wire.

Further, the material of support is stainless steel.

Further, in the first state, occluder for left auricle is contracted in sheath, fixture preceding, closeouts rear, Its medium-height trestle is backmost.

Further, in addition to choked flow film；Choked flow film is arranged in closeouts.

Further, choked flow film is additionally arranged on fixture.

Further, closeouts include closure head and closure waist；Closure head is connected with closure waist；Choked flow film is set Put the outer surface and/or inside on closure head.

Further, quantity >=1 of choked flow film.

Further, choked flow film is additionally arranged in closure waist.

Further, choked flow film is pet (terylene) film..

Further, fixture includes barb.

Further, barb is in J-shaped.

Further, the quantity of barb is 6~12.

In another preferred embodiment, connector is set on fixture.

Further, fixture includes the first canned paragraph, the second canned paragraph；The diameter of first canned paragraph is less than connector Internal diameter, the diameter of the second canned paragraph is more than the internal diameter of connector so that in the second condition, connector can be on the first canned paragraph Activity, but will not depart from from the second canned paragraph and fixture.

Further, fixture also includes the 3rd canned paragraph, and the diameter of the 3rd canned paragraph is equal to the internal diameter of connector, first Canned paragraph, the 3rd canned paragraph, the second canned paragraph are sequentially connected.

Further, from the diameter of the first canned paragraph to the diameter of the 3rd canned paragraph, then it is equal to the diameter of the second canned paragraph It is continuously, little by little to become big.

Further, the length of the 3rd canned paragraph is 2~3mm.

Further, the material of fixture is Nitinol.

The beneficial effects of the utility model are：

1st, because fixture is set in outside connector, and internal diameter of the diameter less than the fixture of the first linkage section, second The diameter of linkage section is more than the internal diameter of the fixture；Or because connector is set in outside fixture, and the first canned paragraph is straight Footpath is less than the internal diameter of the connector, and the diameter of the second canned paragraph is more than the internal diameter of the connector, hence in so that fixture and connection Part is to be flexibly connected, further such that the fixture can more freely form angle and length with closeouts, so as to be applied to The left auricle of heart of different structure, while also reducing the probability of happening of left auricle of heart mouthful plugging device residual leakage.

2nd, J-shaped barb is compared to the advantage of V-shaped barb of the prior art：Can push-and-pull sheath repeatedly, no Occluder for left auricle can be damaged, facilitates doctor to operate and operation reliability.

3rd, the closure waist structure of closeouts is conducive to making closeouts, from central alignment, make closure head in left auricle of heart mouthful Front end face area is smaller, resistance flowing effect more preferably, smaller front end face area occluder for left auricle can be avoided to orifices of pulmonary veins and Mitral influence, the risk that reduction occluder for left auricle is used.

4th, closure head, closure waist and fixture using Nitinol can bear first state and the second state it Between change and produce epimegetic become, be used for multiple times and be difficult to lose shape.

The technique effect of design of the present utility model, concrete structure and generation is described further below in conjunction with accompanying drawing, To be fully understood from the purpose of this utility model, feature and effect.

Brief description of the drawings

Fig. 1 is a kind of structure of the embodiment of occluder for left auricle of the present utility model in the second condition Schematic diagram.

Fig. 2 is the connector of an embodiment of the present utility model and the cross-sectional view of fixture.

Fig. 3 is the connector of an embodiment of the present utility model and the dimensional structure diagram of fixture.

Fig. 4 is a kind of structure of the embodiment of occluder for left auricle of the present utility model in the first state Schematic diagram.

Fig. 5 is the structural representation of the barb of an embodiment of the present utility model.

Fig. 6 is a kind of structural representation of occluder for left auricle barb of the prior art.

Fig. 7 is the connector of another embodiment of the present utility model and the cross-sectional view of fixture.

Embodiment

Embodiment 1

Fig. 1 shows the preferred embodiment of occluder for left auricle that the utility model is related in the second condition.In this reality Apply in example, the occluder for left auricle includes closeouts, connector 2, fixture 3, choked flow film 4.The closeouts include support 11, envelope Plug portion 12 and closure waist 13.Closure head 12 and closure waist 13 are connected, and are formed with nitinol alloy wire braiding Network structure.The length for blocking waist is 3~5mm.It is circle to block the cross section of waist, blocks the diameter of the cross section of waist It is 14~34mm.It is circle, the big 4~6mm of diameter of cross section of its diameter than blocking waist to block head.Support 11 is fixed The two ends of the nitinol alloy wire, play a supporting role in the second condition.Choked flow film 4 is arranged on closure head 12 and closure waist In 13, there are 3 choked flow films 4 as can be seen from Figure 1.In fact can also closure head 12 front end face 121 outer surface or The upper choked flow film of inner surface covering, can also cover choked flow film in the outer surface of fixture.Quantity >=1 of choked flow film.It is fixed Part 3 includes barb 31, and barb 31 is in J-shaped, as shown in Figure 5.Barb 31 of the prior art is in the shape of the letter V, as shown in Figure 6.

Fig. 2 and Fig. 3 show the connector of an embodiment of the occluder for left auricle that the utility model is related to And fixture.The connector includes the first connecting element 21 and the second connecting element 22.First connecting element 21 includes connecting hole 211.The nitinol alloy wire of closure head 12 and closure waist 13 can connect through connecting hole 211 with the first connecting element 21 Connect.Support 11 is also solderable or is otherwise connected with the first connecting element 21.First connecting element 21 is also connected with second Element 22 is connected.Fixture 3 is set in the second connecting element 22.Second connecting element 22 is set in fixture 3 from it Section to the first end 221 of the second connecting element 22 be sequentially set for the first linkage section, the 3rd linkage section and second connect Connect section.The diameter of first linkage section is less than the internal diameter of fixture 3, and the diameter of the 3rd linkage section is equal to the internal diameter of fixture 3, second The diameter of linkage section is more than the internal diameter of fixture 3 so that fixture 3 can be movable in the second connecting element 22, but will not Depart from first end 221 with the second connecting element 22.In order to help to be better understood from the utility model, ab is used in fig. 2 Segment table shows the first linkage section, and bc segment tables show the 3rd linkage section, and cd segment tables show the second linkage section.As can be seen that from the first linkage section To the 3rd linkage section, then to the second linkage section, they are pieced together in funnelform outline.From the diameter of the first linkage section to The diameter of 3rd linkage section, then to the diameter of the second linkage section be continuously, little by little to become big.There is one section interior in fixture 3 Footpath is also continuously, little by little to become big, makes its diameter with the 3rd linkage section to adaptation.The length of 3rd linkage section is 2~ 3mm.Although connector includes the first connecting element and the second connecting element in the present embodiment, can also be without being divided into Two connecting elements, are directly represented with connector.Likewise, in other embodiments, connector can not include the Three linkage sections.In a word, many conventional changes done on the basis of the utility model protection domain of the present utility model it Class.

There is first state and the second state, i.e. contraction state and open shape in the occluder for left auricle that the utility model is related to State, between the two between conversion be by operating progress as follows：In the second state, support 11 is pulled to cause it drives whole Occluder for left auricle is stretched and is punctured into slim-lined construction and enters sheath, and first state (as shown in Figure 4) is presented.Pushed away from sheath Go out occluder for left auricle.Occluder for left auricle once leaves sheath, then expansion is in the second state (as shown in Figure 1)., will during work Occluder for left auricle is transported to left auricle of heart position by sheath, and occluder for left auricle is then released from sheath so that left auricle of heart Plugging device closes left auricle of heart.Left auricle of heart is in pocket-like, because order of the occluder for left auricle from sheath out is first fixed Part, then after the completion of closeouts, therefore closure, what it is in left auricle of heart sack is closeouts, and fixture is located in left auricle of heart bag.

Embodiment 2

Fig. 7 shows the connector and fixture of another embodiment of the present utility model.As shown in fig. 7, even Fitting 2 is set on fixture 3.Fixture 3 includes the first canned paragraph, the 3rd canned paragraph, the second canned paragraph being sequentially connected；The The diameter of one canned paragraph is less than the internal diameter of connector 2, and the diameter of the 3rd canned paragraph is equal to the internal diameter of the connector 2, and second consolidates The diameter for determining section is more than the internal diameter of connector 2 so that in the second condition, and connector 2 can be movable on the first canned paragraph, but It will not depart from from the second canned paragraph with fixture 3.In order to help to be better understood from the utility model, shown in the figure 7 with ef segment tables First canned paragraph, fg segment tables show the 3rd canned paragraph, and gh segment tables show the second canned paragraph.As can be seen that from the diameter of the first canned paragraph To the diameter of the 3rd canned paragraph, then to the diameter of the second canned paragraph be continuously, little by little to become big.There is one section in connector 2 Internal diameter be also continuously, little by little to become big, make its diameter with the 3rd canned paragraph to adaptation.The length of 3rd canned paragraph is 2 ~3mm.

Other structures are similar to embodiment 1.

Embodiment 3

The preparation method for the occluder for left auricle that the utility model is related to：

1, by nitinol alloy wire mechanical braider or hand woven mould, is woven into network structure, and be heat-treated (270~340 DEG C, 20~50min), cylindrical net after being shaped.

2 fix at cylinder net interception suitable length (15~80mm) after sizing, two ends by support, and support can be used The mode of mechanical grip is connected to Nitinol on the net, and the mode that can also be welded with laser welding or microbeam be connected to NiTi On alloy network, the Nitinol net of two ends fixation is obtained.Support can be stainless steel material.

The 3 Nitinol nets for fixing two ends load the first mould, in 410~590 DEG C of heat treatment shapings, obtain the envelope Blocking piece.

4 are laser-cut into basket shape by Nitinol is effective, are put into the second mould and are heat-treated (410~590 DEG C, 9 ~40min), fixture is made.

5 connect closeouts and fixture with connector.Connector can be stainless steel material.

6 sew on choked flow film in being connected in the closeouts of connector of obtaining of step 5 and fixture surface, obtain the left heart Ear plugging device.Choked flow film can be pet films.

Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill of this area without Need creative work just can make many modifications and variations according to design of the present utility model.Therefore, it is all in the art Technical staff on the basis of existing technology can by logical analysis, reasoning, or a limited experiment according to design of the present utility model , all should be in the protection domain being defined in the patent claims with obtained technical scheme.

Claims (34)

1. a kind of occluder for left auricle, it is characterised in that including closeouts, connector and fixture；The closeouts with it is described Connector is connected；The fixture is set on the connector or the connector is set on the fixture；It is described Occluder for left auricle has first state and the second state；In said second condition, the fixture can be relative to the company Fitting activity.

2. occluder for left auricle as claimed in claim 1, it is characterised in that in said first condition, the left auricle of heart envelope Stifled device is in contraction-like, it is adaptable to convey；In said second condition, the occluder for left auricle is open-shaped, it is adaptable to carry out Closure.

3. occluder for left auricle as claimed in claim 1, it is characterised in that the fixture is set on the connector.

4. occluder for left auricle as claimed in claim 3, it is characterised in that the connector includes the first linkage section, second Linkage section；The diameter of first linkage section is less than the internal diameter of the fixture, and the diameter of second linkage section is more than described The internal diameter of fixture so that in said second condition, the fixture can be movable on first linkage section, but will not Depart from from second linkage section and the connector.

5. occluder for left auricle as claimed in claim 4, it is characterised in that the connector also includes the 3rd linkage section, institute The diameter for stating the 3rd linkage section is equal to the internal diameter of the fixture, first linkage section, the 3rd linkage section, described second Linkage section is sequentially connected.

6. occluder for left auricle as claimed in claim 5, it is characterised in that from the diameter of first linkage section to described The diameter of three linkage sections, then to the diameter of second linkage section be continuously, little by little to become big.

7. occluder for left auricle as claimed in claim 5, it is characterised in that the length of the 3rd linkage section is 2~3mm.

8. occluder for left auricle as claimed in claim 1, it is characterised in that the connector includes the first connecting element and the Two connecting elements；First connecting element is connected with the closeouts；Second connecting element is connected member with described first Part is connected；The fixture is set in second connecting element.

9. occluder for left auricle as claimed in claim 8, it is characterised in that second connecting element is set in institute from it The section stated in fixture is sequentially set as the first linkage section, the 3rd linkage section to the first end of second connecting element With the second linkage section；The diameter of first linkage section is less than the internal diameter of the fixture, diameter of the 3rd linkage section etc. In the internal diameter of the fixture, the diameter of second linkage section is more than the internal diameter of the fixture so that the fixture can With movable in second connecting element, but it will not depart from the first end with second connecting element.

10. occluder for left auricle as claimed in claim 1, it is characterised in that the closeouts include closure head and closure Waist；The closure head is connected with the closure waist.

11. occluder for left auricle as claimed in claim 10, it is characterised in that the length of the closure waist is 3~5mm.

12. occluder for left auricle as claimed in claim 10, it is characterised in that the cross section of the closure waist is circle, The diameter of the cross section of the closure waist is 14~34mm.

13. occluder for left auricle as claimed in claim 10, it is characterised in that the closure head is circle, its diameter ratio Big 4~the 6mm of diameter of the cross section of the closure waist.

14. occluder for left auricle as claimed in claim 10, it is characterised in that the closure waist is in round table-like, itself and institute State area of the area more than the cross section of the other end of the cross section at that end of closure head connection.

15. occluder for left auricle as claimed in claim 10, it is characterised in that the closure head is in the form of annular discs.

16. occluder for left auricle as claimed in claim 10, it is characterised in that the closure head and the closure waist are equal Formed by nitinol alloy wire braiding.

17. occluder for left auricle as claimed in claim 16, it is characterised in that the closeouts also include support, for solid The two ends of the fixed nitinol alloy wire.

18. occluder for left auricle as claimed in claim 17, it is characterised in that the material of the support is stainless steel.

19. occluder for left auricle as claimed in claim 17, it is characterised in that in said first condition, the left auricle of heart Plugging device is contracted in sheath, and the fixture is preceding, and the closeouts are rear, wherein the support is backmost.

20. occluder for left auricle as claimed in claim 1, it is characterised in that also including choked flow film；The choked flow film is arranged on In the closeouts.

21. occluder for left auricle as claimed in claim 20, it is characterised in that the choked flow film is additionally arranged at the fixture On.

22. occluder for left auricle as claimed in claim 21, it is characterised in that the closeouts include closure head and closure Waist；The closure head is connected with the closure waist；The choked flow film be arranged on the closure head outer surface and/or It is internal.

23. occluder for left auricle as claimed in claim 20, it is characterised in that quantity >=1 of the choked flow film.

24. occluder for left auricle as claimed in claim 23, it is characterised in that the choked flow film is additionally arranged at the closure waist In portion.

25. occluder for left auricle as claimed in claim 20, it is characterised in that the choked flow film is pet films.

26. occluder for left auricle as claimed in claim 1, it is characterised in that the fixture includes barb.

27. occluder for left auricle as claimed in claim 26, it is characterised in that the barb is in J-shaped.

28. occluder for left auricle as claimed in claim 26, it is characterised in that the quantity of the barb is 6~12.

29. occluder for left auricle as claimed in claim 1, it is characterised in that the connector is set on the fixture.

30. occluder for left auricle as claimed in claim 29, it is characterised in that the fixture includes the first canned paragraph, the Two canned paragraphs；The diameter of first canned paragraph is less than the internal diameter of the connector, and the diameter of second canned paragraph is more than institute State the internal diameter of connector so that in said second condition, the connector can be movable on first canned paragraph, but not It can depart from from second canned paragraph and the fixture.

31. occluder for left auricle as claimed in claim 30, it is characterised in that the fixture also includes the 3rd canned paragraph, The diameter of 3rd canned paragraph is equal to the internal diameter of the connector, first canned paragraph, the 3rd canned paragraph, described the Two canned paragraphs are sequentially connected.

32. occluder for left auricle as claimed in claim 31, it is characterised in that from the diameter of first canned paragraph to described The diameter of 3rd canned paragraph, then to the diameter of second canned paragraph be continuously, little by little to become big.

33. occluder for left auricle as claimed in claim 31, it is characterised in that the length of the 3rd canned paragraph is 2~ 3mm。

34. the occluder for left auricle as described in claim any one of 1-33, it is characterised in that the material of the fixture is nickel Titanium alloy.