CN209932834U - Special plugging device for upper and lower cavity type atrial septal defect - Google Patents
Special plugging device for upper and lower cavity type atrial septal defect Download PDFInfo
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- CN209932834U CN209932834U CN201920015537.3U CN201920015537U CN209932834U CN 209932834 U CN209932834 U CN 209932834U CN 201920015537 U CN201920015537 U CN 201920015537U CN 209932834 U CN209932834 U CN 209932834U
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Abstract
The utility model discloses a special plugging device of upper and lower chamber type atrial septal defect, a serial communication port, including being used for fixing the support in epicoele or cavity of resorption blood vessel, be equipped with below the support with the flat fan-shaped structure of leg joint together, the surface of fan-shaped structure is equipped with the one deck and hinders the flow film. To upper and lower chamber type house scarce, the utility model discloses a stopper can reach the effectual shutoff of the operation mode of interveneeing through the skin defective, can avoid the wearing and tearing of stopper to the atrium wall again.
Description
Technical Field
The utility model relates to a percutaneous intervention treatment congenital heart disease medical instrument especially relates to a special plugging device of upper and lower chamber type atrial septal defect, belongs to medical instrument and gives up technical field.
Background
The superior atrial septal defect, referred to as superior atrial defect, refers to the position of the atrial septal defect above the atrial septum and close to the superior vena cava, as shown in fig. 1 a. Similarly, a inferior vena cava atrial septal defect, abbreviated as inferior vena cava, refers to a defect in which the septal defect is located below the atrial septum and near the inferior vena cava, as shown in fig. 1 b.
The two atrial septal defects belong to contraindications of the plugging treatment of a percutaneous interventional operation plugging device, because the NiTi alloy plugging device which is commonly used clinically at present is in a central symmetry double-umbrella shape, after the plugging device with the shape design is implanted in an upper cavity type atrial defect position, one side can clamp a diaphragm of an atrial septum, the other side is pressed to deform seriously, the NiTi has super elasticity in total and can spontaneously recover to a natural state, and because the top or the bottom of an atrium is continuously rubbed, myocardial abrasion, even perforation and serious heart damage are caused. This type of atrial septal defect is therefore contraindicated for conventional occluder interventions.
In order to treat the atrial defect in the type by a percutaneous interventional operation mode, various medical instrument manufacturers design a plurality of occluders with special shapes or structures so as to be suitable for the special structure of the defect and avoid abrasion.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: solves the problem of how to avoid myocardial abrasion when the upper and lower cavitary lacuna are treated by the occluder.
In order to solve the technical problem, the technical scheme of the utility model a special occluder of upper and lower chamber type atrial septal defect is provided, a serial communication port, including being used for fixing the support in epicoele or cavity of resorption blood vessel, be equipped with the flat fan-shaped structure together with leg joint below the support, the surface of fan-shaped structure is equipped with the one deck and hinders the flow film.
Preferably, the bracket and the fan-shaped structure are an integrated structure formed by weaving and shaping wires.
Preferably, the material of the wire is non-degradable NiTi alloy or degradable polymer; the degradable polymer is PDO or PLA or PHB.
Preferably, the material of the flow-blocking membrane is non-degradable PET or ePTFE, or degradable polymer, and the degradable polymer is PLA or PHB; the suture is a non-degradable non-absorbable suture or a degradable absorbable suture; the non-degradable non-absorbable suture is PP or PA or PU; the degradable absorbable suture is PDO or PLA.
Preferably, the flow-resistant film is sewn on the fan-shaped structure by a sewing thread or is spun on the fan-shaped structure by means of electrospinning.
Preferably, the flow blocking film is fixed on the inner side of the fan-shaped structure or fixed on the outer side of the fan-shaped structure, or the flow blocking film is fixed on both the inner side and the outer side of the fan-shaped structure.
Preferably, the stent is not coated, and the fan-shaped structure is coated with a film.
Preferably, the length of the bracket is 10 mm-40 mm; the diameter range of the bracket is 30 mm-40 mm.
Preferably, the length of the fan-shaped structure for blocking the inferior cavity segment is longer than the length of the fan-shaped structure for blocking the superior cavity segment.
Preferably, the length range of the fan-shaped structure is 30 mm-80 mm; the width range of the fan-shaped structure is 10 mm-40 mm.
To upper and lower chamber type house scarce, the utility model discloses a stopper can reach the effectual shutoff of the operation mode of interveneeing through the skin defective, can avoid the wearing and tearing of stopper to the atrium wall again. The utility model discloses a fix the support in epicoele or lower chamber blood vessel, the defect of interatrial septum is passed to fan-shaped structure, prevents the route of unusual blood flow. With the progress of endothelialization, the fan-shaped structure is wrapped, and finally the defect is completely closed, so that the problem of upper and lower cavity type atrial defect is solved.
Drawings
FIG. 1a is a schematic view of an upper cavity type opening;
FIG. 1b is a schematic view of a lower cavity type housing opening;
fig. 2a is a front view of the special plugging device for the upper and lower cavity type housing gap;
FIG. 2b is a side view of the special occluder for upper and lower cavity type housing defects;
fig. 2c is a top view of the special occluder for upper and lower cavity type housing defects;
fig. 3a is a schematic diagram of plugging an upper cavity type house gap by using a plugging device special for the upper cavity type house gap and the lower cavity type house gap;
fig. 3b is a schematic diagram of using a plugging device special for the upper cavity type housing defect and the lower cavity type housing defect to plug the lower cavity type housing defect.
Wherein: 1 is the superior vena cava; 2 is the right atrium; 3 is inferior vena cava; 4 is the interatrial septum; 5 is the left atrium; 6 is an upper cavity type cavity gap; 7 is a lower cavity type house gap; 8 is a sector structure; and 9 is a bracket.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The utility model relates to a special plugging device of upper and lower cavate atrial septal defect, as shown in fig. 2 a-2 c, it includes a short support 9 to and the flat fan-shaped structure 8 that links together with support 9, there is the one deck to hinder the flow membrane on the surface of fan-shaped structure 8, prevents the passing through of blood flow. In use, the stent 9 is fixed in the superior or inferior lumen, while the fan-shaped structure 8 passes through the defect of the atrial septum (i.e., the superior 6 or inferior 7 atrial defect) to prevent access to abnormal blood flow. As endothelialization progresses, the fan-shaped structures 8 become encapsulated, eventually completely closing the defect.
The utility model discloses a plugging device is woven by the silk material and is stereotyped and form, and the material of silk material can be nondegradable NiTi alloy, also can be degradable polymer, for example to two oxygen cyclohexanone (PDO), polylactic acid (PLA), Polyester (PHB).
The material of the flow-blocking membrane can be non-degradable PET, ePTFE, or degradable polymer, such as polylactic acid (PLA), Polyester (PHB), etc.
The flow-resisting membrane can be sewn on the fan-shaped structure 8 of the stopper through a suture line, and can also be spun on the fan-shaped structure 8 of the stopper through an electrostatic spinning mode.
The flow-blocking film can be fixed on the inner side of the fan-shaped structure 8, can also be fixed on the outer side of the fan-shaped structure 8, and can also be fixed on the inner side and the outer side of the fan-shaped structure 8.
The suture may be a non-degradable, non-absorbable suture, such as PP, PA, PU, etc., or a degradable, absorbable suture, such as Polydioxanone (PDO), polylactic acid (PLA), etc.
As shown in fig. 3a and 3b, the plugging device of the present invention can be used for plugging the upper cavity type house gap and the lower cavity type house gap.
The utility model discloses a after the plugging device released, the tubulose support 9 that is located the vena cava blood vessel did not have the tectorial membrane, and the structure of this tubulose support is similar to vascular support, but its length is shorter, and its length scope is: 10 mm-40 mm, and the diameter range is as follows: 30 mm-40 mm; a fan-shaped structure 8 for occluder atrial septal defect position has the tectorial membrane, and the length scope of fan-shaped structure 8 is: 30 mm-80 mm, and the length of the fan-shaped structure 8 of the plugging device for plugging the lower cavity type house gap 7 is longer than that of the fan-shaped structure 8 of the plugging device for plugging the upper cavity type house gap 6. The width range of the fan-shaped structure 8 is: 10 mm-40 mm. Length range of the sector structure of the upper cavity type house gap: 3 cm-5 cm; length range of fan-shaped structure of inferior cavity type house vacancy: 5 cm-8 cm.
Claims (10)
1. The special occluder for the upper cavity type atrial septal defect and the lower cavity type atrial septal defect is characterized by comprising a support (9) fixed in an upper cavity or a lower cavity blood vessel, wherein a flat fan-shaped structure (8) connected with the support (9) is arranged below the support (9), and a flow-resisting film is arranged on the surface of the fan-shaped structure (8).
2. The special occluder for atrial septal defects of the superior and inferior cavitary types in claim 1, wherein the stent (9) and the fan-shaped structure (8) are an integral structure formed by weaving and shaping wires.
3. The special occluder for atrial septal defects of upper and lower cavitary types according to claim 2, wherein the wire is made of non-degradable NiTi alloy or degradable polymer; the degradable polymer is PDO or PLA or PHB.
4. The special occluder for atrial septal defects of the superior and inferior cavitary type according to claim 1, wherein the material of the flow-blocking membrane is non-degradable PET or ePTFE or degradable polymer, the degradable polymer is PLA or PHB; the suture is a non-degradable non-absorbable suture or a degradable absorbable suture; the non-degradable non-absorbable suture is PP or PA or PU; the degradable absorbable suture is PDO or PLA.
5. The special occluder for atrial septal defects of the superior and inferior cavitary type according to claim 1 wherein the flow-blocking membrane is sewn on the fan-shaped structure (8) by means of a suture or is spun on the fan-shaped structure (8) by means of electrospinning.
6. The special occluder for atrial septal defects of the superior and inferior cavitary type according to claim 1 wherein the flow-blocking membrane is fixed on the inner side of the fan-shaped structure (8) or on the outer side of the fan-shaped structure (8), or the flow-blocking membrane is fixed on both the inner side and the outer side of the fan-shaped structure (8).
7. The special occluder for atrial septal defects of the superior and inferior cavitary type as claimed in claim 1, wherein said stent (9) has no coating and the fan-shaped structure (8) has a coating.
8. The special occluder for atrial septal defects of the superior and inferior cavitary types as claimed in claim 1 or 7, wherein the length of said stent (9) is 10mm to 40 mm; the diameter range of the bracket (9) is 30 mm-40 mm.
9. The special occluder of claim 1 or 7, wherein the length of the fan-shaped structure (8) for occluding the inferior compartment defect (7) is longer than the length of the fan-shaped structure (8) for occluding the superior compartment defect (6).
10. The special occluder for atrial septal defects of the superior and inferior cavitary type according to claim 1 or 7 wherein the length of said fan-shaped structure (8) ranges from 30mm to 80 mm; the width range of the fan-shaped structure (8) is 10 mm-40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920015537.3U CN209932834U (en) | 2019-01-04 | 2019-01-04 | Special plugging device for upper and lower cavity type atrial septal defect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920015537.3U CN209932834U (en) | 2019-01-04 | 2019-01-04 | Special plugging device for upper and lower cavity type atrial septal defect |
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| CN209932834U true CN209932834U (en) | 2020-01-14 |
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| CN201920015537.3U Active CN209932834U (en) | 2019-01-04 | 2019-01-04 | Special plugging device for upper and lower cavity type atrial septal defect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115737013A (en) * | 2023-01-04 | 2023-03-07 | 中国医学科学院阜外医院 | Edge atrial septal defect plugging device |
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2019
- 2019-01-04 CN CN201920015537.3U patent/CN209932834U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115737013A (en) * | 2023-01-04 | 2023-03-07 | 中国医学科学院阜外医院 | Edge atrial septal defect plugging device |
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