CN200970282Y - Blocking device for heart septal defect - Google Patents
Blocking device for heart septal defect Download PDFInfo
- Publication number
- CN200970282Y CN200970282Y CN 200620128233 CN200620128233U CN200970282Y CN 200970282 Y CN200970282 Y CN 200970282Y CN 200620128233 CN200620128233 CN 200620128233 CN 200620128233 U CN200620128233 U CN 200620128233U CN 200970282 Y CN200970282 Y CN 200970282Y
- Authority
- CN
- China
- Prior art keywords
- bolt head
- mesh
- tow
- support net
- tubular body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a closure device for cardiac septal defects, the main body of which is a metal support net of a preinstalled and expanded shape, wherein end of mesh tow of the support net is in fixed connection with the bolt head; the bolt head is in socket joint with a tubular body; end of the mesh tows is pushed in the circular gap between the bolt head and the tubular body, along the axial line of the mesh tray of the support net and close to direction of the mesh tray; head of the mesh tow is inter-welded with the tubular body and end of the bolt head as a whole. Since end of the mesh tows is pushed in the circular gap between the bolt head and the tubular body, along the axial line of the mesh tray of the support net and close to direction of the mesh tray, the bolt head is positioned within mesh tray surface of the support net when released, thus the utility model can effectively solve the problem with existing technologies that the bolt head projecting out of the metal mesh tray might touch or injure internal peripheral tissues of the heart; therefore the utility model can ease the pain for patients and reduce losses caused to both doctors and patients, with improved security during clinical use.
Description
Technical field
This utility model relates to medical apparatus and instruments, is specifically related to a kind of heart septal defect blocking device for the treatment of congenital heart disease.
Background technology
Congenital heart disease comprises patent ductus arteriosus (PDA), patent foramen ovale (PFO), atrial septal defect (ASD) and indoor every damaged (VSD) etc.Wherein PDA may make blood flow between aorta and pulmonary artery, and PFO and ASD may make blood flow between left atrium and right atrium, and VSD may make blood flow between left ventricle and right ventricle, and flow more generally needs to repair.At present existing polytype heart septal defect plugging device is used for the treatment of above-mentioned congenital heart disease, wherein be extensive use of the also representative Chinese patent CN97194488.1 that has, CN98808876.2, the technical scheme that CN98813470.5 etc. announce, the common trait of said apparatus is to comprise a supporting network with the default profile of shrinkage, the built-in choked flow film of supporting network, this supporting network is elongated in conduit after femoral vein or jugular vein are delivered to the patient's heart defect and discharges, and makes the wire netting dish at wire netting two ends be clamped in the heart septal defect position to reach the effect of shutoff.This device has easy recovery, from the good characteristics of centrality.But in clinical use, find, because the bolt head of wire netting card end and the syndeton of twine tow are unreasonable, make the length of bolt head long (as shown in Figure 2), having formed the bolt head protrudes in outside the wire netting card greatly, make it enter large artery trunks, left atrium or left ventricle with outstanding state, left pulmonary vein mouth, the orifice of coronary sinus of left atrium, aorta or other internal cardiac structures tissue of left ventricle are very easily touched or damaged to outstanding bolt head.
Summary of the invention
This utility model provides a kind of heart septal defect blocking device, to overcome the drawback that prior art exists.
This utility model purpose is achieved in that its main body of this heart septal defect blocking device is the wire support net with default expansion profile, the twine tow end and the bolt head of this supporting network are connected, it is characterized in that described bolt headgear is loaded in the body, to be threaded onto near net dish direction in the annular gap between bolt head and body, the end of twine tow termination and body and bolt head is welded to each other and is one along supporting network net disk axis in the end of twine tow.
The technological progress that this utility model is obtained: because the end of twine tow is to be threaded onto with the direction near the net dish in the annular gap between bolt head and body along supporting network net disk axis, thereby under release conditions, the bolt head is positioned at supporting network net card, the touching that bolt head process that present prior art exists brings for the wire netting card or the danger of damage heart inner rim tissue have been solved effectively outward, reduce patient suffering and doctors and patients loss, improved clinical safety in utilization.
Description of drawings
Fig. 1 is a stopper overall structure sketch map.
Fig. 2 is the local structure for amplifying sketch map of the prior art bolt head of Fig. 1.
Fig. 3 is the local structure for amplifying sketch map of the bolt head after the improvement of Fig. 1.
The specific embodiment
For further describing this utility model, the utility model is described in further detail below in conjunction with accompanying drawing.
As Fig. 1, shown in Figure 3, this utility model is the improvement of making on prior art bolt header structure basis as shown in Figure 2, its main body of this heart septal defect blocking device is the nickel-titanium metal silk supporting network with shape-memory properties with default expansion profile, bolt head 3 is set in the metal body 1 suitable with bolt head 3 length, the end of described supporting network twine tow 2 is along supporting network net disk axis and be threaded onto with the direction near the net dish in the annular gap of 1 of bolt head 3 and body, twine tow 2 forms uniform distribution in the annular gap, the end three of the termination of twine tow 2 and body 1 and bolt head 3 is welded to each other and is one, promptly forms solder joint 4 in bolt head 3 upper ends in the welding position.
In when operation, by conduit this utility model is delivered to the heart defect position by patient's body interior conduit, discharge and to recover can to stop up unusual opening behind its shape memory damaged.
Claims (3)
1. heart septal defect blocking device, its main body is the wire support net with default expansion profile, the twine tow end and the bolt head of supporting network are connected, it is characterized in that described bolt headgear is loaded in the body, to be threaded onto near net dish direction in the annular gap between bolt head and body, the end of twine tow termination and body and bolt head is welded to each other and is one along supporting network net disk axis in the end of twine tow.
2. heart septal defect blocking device according to claim 1 is characterized in that described twine tow is uniform in the annular gap.
3. heart septal defect blocking device according to claim 1 is characterized in that described bolt head and body length are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620128233 CN200970282Y (en) | 2006-11-27 | 2006-11-27 | Blocking device for heart septal defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620128233 CN200970282Y (en) | 2006-11-27 | 2006-11-27 | Blocking device for heart septal defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200970282Y true CN200970282Y (en) | 2007-11-07 |
Family
ID=38881539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620128233 Expired - Fee Related CN200970282Y (en) | 2006-11-27 | 2006-11-27 | Blocking device for heart septal defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200970282Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10925588B2 (en) | 2011-11-18 | 2021-02-23 | St. Jude Medical, Cardiology Division, Inc. | Devices and methods for occluding abnormal openings in a patient's vasculature |
-
2006
- 2006-11-27 CN CN 200620128233 patent/CN200970282Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10925588B2 (en) | 2011-11-18 | 2021-02-23 | St. Jude Medical, Cardiology Division, Inc. | Devices and methods for occluding abnormal openings in a patient's vasculature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071107 Termination date: 20091228 |