CN102805673A - Heart plugging device - Google Patents
Heart plugging device Download PDFInfo
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- CN102805673A CN102805673A CN2012102904054A CN201210290405A CN102805673A CN 102805673 A CN102805673 A CN 102805673A CN 2012102904054 A CN2012102904054 A CN 2012102904054A CN 201210290405 A CN201210290405 A CN 201210290405A CN 102805673 A CN102805673 A CN 102805673A
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- heart
- bracket
- support
- heart occluder
- occluder
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Abstract
The invention discloses a heart plugging device for treating congenital heart disease, which comprises a bracket and metal sleeves, wherein the bracket comprises disks positioned at two ends of the bracket and a waist positioned between the two disks, the bracket is woven by shape memory alloy wires and has a net structure, the inside of the bracket is hollow, and the centers of the two disks are respectively provided with the metal sleeves. The technical effects are as follows: by removing the polyester fiber membrane in the bracket, the possibility of hemolysis and immunological rejection reaction of patients is reduced, the blocking effectiveness of the cardiac occluder is ensured, the section diameter of the cardiac occluder after entering the delivery device is reduced, and the optimal treatment opportunity is provided for more patients.
Description
Technical field
The present invention relates to a kind of heart occluder that is used to treat congenital heart disease.
Background technology
Congenital heart disease comprises patent ductus arteriosus (PDA), patent foramen ovale (PFO), atrial septal defect (ASD) and indoor separated damaged (VSD) etc.PDA can cause blood between aorta and pulmonary artery, to flow.PFO and ASD can cause blood between left atrium and right atrium, to flow.VSD can cause blood between left ventricle and right ventricle, to flow.Flow more generally needs to repair.Since the seventies in 20th century, through heart occluder, the interventional therapy of the defect of heart being carried out shutoff has obtained promoting widely.
Traditional heart occluder comprises: the support that nitinol alloy wire is woven into, medical stainless steel cover, polyester fiber film and stitching thread.Said support comprises: disk and the waist between two disks at the support two ends.Be used to weave the nitinol alloy wire of said support, become the Nitinol tow in the center fixation of the disk at said support two ends, said stainless steel sleeve is fixed said Nitinol tow, and in said nitinol alloy wire is wrapped in.
Traditional heart occluder owing to exaggerated for the infringement of metal ion for human body, therefore reduces the consumption of nitinol alloy wire as far as possible when design when design, support has adopted the monolayer RF that is woven into by 72 nitinol alloy wires at most.In order to guarantee the surface tension of heart occluder, guarantee it and can accomplish shutoff like this patient's heart defect, the built-in polyester fiber film of said support, said polyester fiber film is fixed through stitching thread and said support.After said heart occluder discharged from conveyer device, support recovered rapidly preset shape, the defect that gets into patient's heart, and accomplish the shutoff of this defect by said polyester fiber film.Adopt the polyester fiber film, caused following problem:
At first, the polyester fiber film can not form plugging effect immediately, and can cause the patient to produce hemolytic reaction.
Moreover because the material category that implants is more, it is bigger that human body is compared Nitinol to the rejection of polyester fiber film, and aseptic inflammation appears in patient easily.So postoperative patient need be taken medicine for a long time, increased patient's treatment cost.
The 3rd, the ability of part blood samples of patients dissolved polyester fibrous membrane is stronger, and the connective tissue that sticks to the heart occluder surface is not completed into as yet, and the polyester fiber film just is partly dissolved, and causes plugging effect to weaken.
At last, the thickness of polyester fiber film is bigger, cause heart occluder to get into conveyer device after diameter of section increase, therefore can not use undersized conveyer device to be sent to the defect of patient's heart.Simultaneously, the optimal treatment age of congenital heart disease is not for being higher than for 12 one full year of life.Therefore this can cause a large amount of patients to lose best occasion for the treatment, the chance that forfeiture is survived.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art; A kind of heart occluder is provided; It can reduce the possibility that haemolysis and immunological rejection take place the patient; Guarantee the plugging effect of heart occluder, reduce it and get into diameter of section behind conveyer device, give more patients therapy apparatus meeting with the best.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of heart occluder, comprise support and metallic sheath, and said support comprises that the center of two disks is respectively equipped with said metallic sheath at the disk at these support two ends and the waist between two disks; Said support is woven into by the shape memory alloy metal silk, has RF, and the inside of said support is empty.
Further, the disk of said support is or/and waist has double-deck RF or multilamellar RF.
Further, said support is formed by at least 144 shape memory alloy metal silk braidings.
Further, said disk is umbrella or mushroom.
Further, said shape memory alloy metal silk is a nitinol alloy wire.
Further, said metallic sheath is processed by medical stainless steel.
Further, said waist is shaped as cylinder or dumbbell body.
Adopted the technical scheme of a kind of heart occluder of the present invention, promptly removed the polyester fiber film, made this internal stent be empty technical scheme at the internal stent of heart occluder.Its technique effect is: can reduce the possibility that haemolysis and immunological rejection take place the patient, guarantee the plugging effect of heart occluder, reduce heart occluder and get into diameter of section behind the conveyer device, give more patients therapy apparatus meeting with the best.
Description of drawings
Fig. 1 is the front view of a kind of heart occluder first to the 3rd embodiment of the present invention.
Fig. 2 is the front view of a kind of heart occluder the 4th embodiment of the present invention.
Fig. 3 is the vertical view of a kind of heart occluder first to fourth embodiment of the present invention.
Fig. 4 is the internal structure sketch map of a kind of heart occluder first embodiment of the present invention.
Fig. 5 is the internal structure sketch map of a kind of heart occluder second embodiment of the present invention.
Fig. 6 is the internal structure sketch map of a kind of heart occluder the 3rd embodiment of the present invention.
Fig. 7 is the internal structure sketch map of a kind of heart occluder the 4th embodiment of the present invention.
The specific embodiment
See also Fig. 1 to Fig. 7, inventor of the present invention to pass through embodiment particularly below, and combines accompanying drawing at length to explain in order to understand technical scheme of the present invention better:
First embodiment:
See also Fig. 1, Fig. 3 and Fig. 4, when conveyer device was transported to assigned address with said heart occluder and discharges, heart occluder returned to preset shape under the capillary effect of blood samples of patients, and patient's defect is accomplished shutoff.Through adopting conveyer device, can prevent that the material of heart occluder is impaired, also can prevent the damage of patient vessel's wall.A kind of heart occluder of the present invention comprises support 1 and metallic sheath 2, and said support 1 comprises at the disk 12 at this support 1 two ends and the waist 11 between two disks 12.In the present embodiment, said waist 11 is a cylinder.Said disk 12 is umbrella or mushroom.Said support 1 usefulness nitinol alloy wire braiding forms, and has the monolayer RF.Said nitinol alloy wire fixedly becomes the nitinol alloy wire bundle at the center of the disk 12 at said support 1 two ends through said metallic sheath 2, in said metallic sheath 2 is wrapped in said nitinol alloy wire, thereby guarantees the stable of entire bracket 1 mechanical structure.Certainly the nitinol alloy wire that is adopted in the present embodiment also can replace with other shape memory alloy metal silk with good biocompatibility.But up to the present, nitinol alloy wire is the shape memory alloy metal silk with best mechanical property and biocompatibility, also the most suitablely is used for doing heart occluder.What said metallic sheath 2 adopted is the medical stainless steel-316L type rustless steel that has good biocompatibility and mechanical property concurrently.
A kind of heart occluder among the present invention, its maximum characteristics have been to cancel the polyester fiber film that is positioned at said support 1 originally, and therefore the inside of said support 1 is empty, and promptly said support 1 inside is hollow cavity.
The purpose of design is like this: the polyester fiber film that is positioned at said support 1 through removal; Reduce the patient possibility of haemolysis and immunological rejection takes place; Guarantee the plugging effect of heart occluder; Reduce heart occluder and get into diameter of section behind the conveyer device, adopt the small size conveyer device can said heart occluder be transported to the defect of patient's heart, give more patients therapy apparatus meeting with the best.
In order to improve the surface tension of said support 1 in blood samples of patients, guarantee the plugging effect of said heart occluder, increased the quantity of nitinol alloy wire in the present embodiment, the support of traditional heart occluder is to be formed by no more than 72 nitinol alloy wires braiding.A kind of heart occluder of the present invention, it is formed by 144 nitinol alloy wire braidings at least.The quantity that is used to weave the nitinol alloy wire of said support 1 through increase increases the density of support 1 nitinol alloy wire, has strengthened the surface tension of said heart occluder in blood samples of patients.After heart occluder discharges, can recover preset shape rapidly from conveyer device, can form shutoff rapidly after the defect of heart occluder entering patient's heart, thereby guarantee the effective shutoff of heart occluder for the patient's heart defect.Simultaneously, no blood is residual in this heart occluder shutoff process.
Second embodiment;
See also Fig. 1, Fig. 3 and Fig. 5; A kind of heart occluder of present embodiment comprises support 1 and metallic sheath 2; Said support 1 comprises at the disk 12 at this support 1 two ends and the waist 11 between two disks 12; The center of two disks 12 is provided with metallic sheath 2 respectively, and said metallic sheath 2 usefulness 316L type rustless steels are processed.Said support 1 is formed by at least 144 nitinol alloy wire braidings.Because the polyester fiber film has been removed in said support 1 inside, therefore said support 1 inside is empty.In the present embodiment, said disk 12 is umbrella or mushroom.Said waist 11 is a cylinder, and it comprises double-deck RF.
Said waist 11 is provided with double-deck cancellated purpose and is: strengthened the surface tension of said waist 11 in blood samples of patients.After heart occluder discharges from conveyer device, can recover preset shape rapidly, the defect that gets into patient's heart is carried out shutoff, thereby has guaranteed the effective shutoff of heart occluder for the patient's heart defect.Simultaneously, no blood is residual in this heart occluder shutoff process.
The 3rd embodiment:
See also Fig. 1, Fig. 3 and Fig. 6; A kind of heart occluder of present embodiment comprises support 1 and metallic sheath 2; Said support 1 comprises that at the disk 12 at this support 1 two ends and the waist 11 between two disks 12, said disk 12 is umbrella or mushroom, and said waist 11 is a cylinder.The center of two disks 12 is provided with metallic sheath 2, and said metallic sheath 2 usefulness 316L type rustless steels are processed.Said support 1 is formed by at least 144 nitinol alloy wire braidings.Because the polyester fiber film has been removed in said support 1 inside, therefore said support 1 inside is empty.In the present embodiment, said waist 11 all comprises double-deck RF with said disk 12.
Said waist 11 all is provided with double-deck cancellated purpose with said disk 12 and is: strengthened said waist 11 and the surface tension of said disk 12 in blood samples of patients.After heart occluder discharges from conveyer device, can recover preset shape rapidly, the defect that gets into patient's heart is carried out shutoff, thereby has guaranteed the effective shutoff of heart occluder for the patient's heart defect.Simultaneously, no blood is residual in this heart occluder shutoff process.
The 4th embodiment;
See also Fig. 2, Fig. 3 and Fig. 7; A kind of heart occluder of present embodiment comprises support 1 and metallic sheath 2; Said support 1 comprises at the disk 12 at this support 1 two ends and the waist 11 between two disks 12; The center of two disks 12 is provided with metallic sheath 2 respectively, and said metallic sheath 2 usefulness 316L type rustless steels are processed.Said support 1 is formed by at least 144 nitinol alloy wire braidings.Because the polyester fiber film has been removed in said support 1 inside, therefore said support 1 inside is empty.In the present embodiment, said waist 11 be shaped as the dumbbell body.Said disk 12 is umbrella or mushroom, and it comprises double-deck RF.
Said disk 12 is provided with double-deck cancellated purpose and is: strengthened the surface tension of said disk 12 in blood samples of patients.After heart occluder discharges from conveyer device, can recover preset shape rapidly, the defect that gets into patient's heart is carried out shutoff, thereby has guaranteed the effective shutoff of heart occluder for the patient's heart defect.Simultaneously, no blood is residual in this heart occluder shutoff process.
Certainly, the disk 12 of said support 1 and/or waist 11 are provided with two-layer above RF and also are fine.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102904054A CN102805673A (en) | 2012-08-15 | 2012-08-15 | Heart plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102904054A CN102805673A (en) | 2012-08-15 | 2012-08-15 | Heart plugging device |
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| CN102805673A true CN102805673A (en) | 2012-12-05 |
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| CN2012102904054A Pending CN102805673A (en) | 2012-08-15 | 2012-08-15 | Heart plugging device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753068A (en) * | 2016-08-18 | 2018-03-06 | 先健科技(深圳)有限公司 | Plugging device |
| CN111820963A (en) * | 2020-08-17 | 2020-10-27 | 复旦大学附属中山医院 | New double-layer occluder |
| CN112998770A (en) * | 2019-12-20 | 2021-06-22 | 先健科技(深圳)有限公司 | Plugging device and plugging system |
| CN113576585A (en) * | 2021-08-26 | 2021-11-02 | 四川大学 | Interventional heart plugging device convenient to convey and recover |
| CN113729800A (en) * | 2021-09-02 | 2021-12-03 | 晨兴(南通)医疗器械有限公司 | Shunt device for atrium |
| CN116262145A (en) * | 2021-12-14 | 2023-06-16 | 中国人民解放军陆军军医大学第二附属医院 | A digestive tract perforation occluder and preparation method thereof |
| US11992221B2 (en) | 2019-12-20 | 2024-05-28 | Lifetech Scientific (Shenzhen) Co., Ltd. | Occluder, occluding system and conveying device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753068A (en) * | 2016-08-18 | 2018-03-06 | 先健科技(深圳)有限公司 | Plugging device |
| CN112998770A (en) * | 2019-12-20 | 2021-06-22 | 先健科技(深圳)有限公司 | Plugging device and plugging system |
| CN116549030A (en) * | 2019-12-20 | 2023-08-08 | 先健科技(深圳)有限公司 | Occluder and Closure System |
| US11992221B2 (en) | 2019-12-20 | 2024-05-28 | Lifetech Scientific (Shenzhen) Co., Ltd. | Occluder, occluding system and conveying device |
| CN111820963A (en) * | 2020-08-17 | 2020-10-27 | 复旦大学附属中山医院 | New double-layer occluder |
| CN113576585A (en) * | 2021-08-26 | 2021-11-02 | 四川大学 | Interventional heart plugging device convenient to convey and recover |
| CN113729800A (en) * | 2021-09-02 | 2021-12-03 | 晨兴(南通)医疗器械有限公司 | Shunt device for atrium |
| CN116262145A (en) * | 2021-12-14 | 2023-06-16 | 中国人民解放军陆军军医大学第二附属医院 | A digestive tract perforation occluder and preparation method thereof |
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Application publication date: 20121205 |