CN101773418B - Cardiac ventricular septal defect closer - Google Patents
Cardiac ventricular septal defect closer Download PDFInfo
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- CN101773418B CN101773418B CN2009100640596A CN200910064059A CN101773418B CN 101773418 B CN101773418 B CN 101773418B CN 2009100640596 A CN2009100640596 A CN 2009100640596A CN 200910064059 A CN200910064059 A CN 200910064059A CN 101773418 B CN101773418 B CN 101773418B
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- stopper
- alloy wires
- closer
- face
- septal defect
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Abstract
The body portion of a cardiac ventricular septal defect closer is an elastic net which has the function of shape memory, is shaped as elongated strip when being drawn by external force and immediately restores to preset shape when the external force is removed, the elastic net is internally provided with a layer of sealing membrane and is formed by weaving and then shaping and heat-treating nickel-titanium alloy wires. After the closer is expanded, a round left disc with the sealing membrane therein is formed at the front part of the closer and a round right disk is formed at the rear end of the closer, the diameter of the outline of a waist part between the left disc and the right disc is smaller than those of the left disc and the right disc by 4 to 12 millimeters, the center of a front end face of the closer is provided with a head which folds and fixes the alloy wires, the center of a rear end face of the closer is provided with a joint which folds and fixes the alloy wires, the joint is connected, via a connecting hole at an axial center part thereof, with a conveying steel cable; the diameter of the nickel-titanium alloy wires on the rear end face is gradually thinned, the nickel-titanium alloy wires adjacent to the center include the smallest diameter, which is smaller than those of the alloy wires at other parts by 50%, and are bent in a shape of circular arc, and the heat treatment hardness of the nickel-titanium alloy wires adjacent to the center is a little lower than those of the nickel-titanium alloy wires at other parts.
Description
(1) technical field
The present invention relates to technical field of medical instruments, be specifically related to a kind of cardiac ventricular septal defect closer for the treatment of congenital heart disease.
(2) background technology
Congenital heart disease atrial septal defect and ventricular septal defect all are common congenital heart diseases, and the characteristics of its pathological changes of heart atrial septal defect are that normally closed is failed at the interval between the left atrium, and blood flows between left atrium and right atrium; The characteristics of its pathological changes of ventricular septal defect are that normally closed is failed at the interval between the left and right ventricles, and blood is flowed between left ventricle and right ventricle.Because the pressure of left atrium is higher than right atrium, so the part blood of left atrium flows to right atrium through atrial septal defect punishment.Because the leakage of blood, the burden that causes the right side to feel concerned about system increases, and causes right ventricular hypertrophy, pulmonary hypertension, arrhythmia and heart failure.When causing blood leakage, the heart septal defect more just need repair the septal defect place.Surgical operation is the traditional method of treatment heart septal defect, its shortcoming be need open breast to patient, wound is big, the complication rate height, recovers slow.Wicresoft's interventional therapy progressively becomes the first-selection of treatment heart septal defect since the eighties in last century, with the ventricular septal defect is example, it is to open an osculum at the femoral vein place, inserting lead sets up through the track of femoral vein to the cardiac septum position, insert delivery sheath through track, the stopper that will be connected with the conveying wirerope then pushes delivery sheath and delivers to left chamber together, under the supervision of X-ray and color ultrasound, determines slowly to open stopper after the defect.We at first open left side dish, pull back then and carry wirerope and delivery sheath, make side ring surface and the applying of left locular wall in the dish of a left side, after determining to fit well, slowly open the waist of stopper again, determine to open right card again after waist and defect relative position are well, making originally has damaged spaced walls to be clamped by left and right two cards of stopper, make damaged closure, reach the purpose of clinical cure.If right card is all opened the back and found the improper of stopper model or installation in operation, the conveying wirerope of at this moment just need pulling back in the delivery sheath that stopper is retracted, reapposes or all pulls out human body again and change other stopper outward in addition.
At present existing multiple cardiac ventricular septal defect closer is used to treat congenital ventricular septal heart defect.The main part of its stopper is a metallic elastic net that has the default profile of memory and can be shrunk to strip mostly, is provided with the diaphragm seal that one deck intercepts blood flow in the elastic network(s).The tinsel of braided metal elastic network(s) diameter unanimity everywhere wherein, heat treatment hardness is also consistent everywhere, the silk thread of metallic elastic net blocks at the oral area of delivery sheath easily when reclaiming stopper, ubiquity reclaims big this shortcoming of resistance, if firmly hard draw just may cause the track overbending, injured blood vessel has an accident.
Carry out under X-ray placing the cardiac septum stopper for patient, B ultrasonic is used simultaneously.Because it is fully aware of that the heart defect position can not be seen, need rule of thumb judge the size and the shape of defect mostly, thereby select the stopper of certain model and specification.Because the collimation error causes selected stopper model and specification not right, or placement location is improper and cause that stopper is installed is unsuccessful through regular meeting.At this moment just need regain the stopper of all having opened in the delivery sheath, discharge again then or take out and change.But at present the ubiquitous shortcoming of using of cardiac septum stopper is in case unusual difficulty just need be recovered to the stopper of all having opened in the delivery sheath again the time, nonrecoverable accident often takes place, have to deliver to the cardiac surgery operation chamber to patient for this reason and carry out open chest surgery, take out stopper and sew and mend heart septal defect again, patient is easy to meet accident in this process.Analyzing its reason mainly is that the stopper joint is poorer than comparatively dense, tinsel pliability owing to tinsel, makes that resistance increases when reclaiming.
(3) summary of the invention
The present invention provides a kind of heart chamber interventricular septum stopper of being convenient to reclaim in order to overcome the defective that existing cardiac septum stopper is difficult for withdrawal.
The technical scheme of being taked that the present invention solves its technical problem is as follows:
The main part of cardiac ventricular septal defect closer is made one to be had good shape memory function and is subjected to external force traction and be strip, recovers the elastic network(s) of original preset profile after external force is removed immediately, is provided with one deck polyester diaphragm seal in the elastic network(s).Elastic network(s) is with the nitinol alloy wire braiding after molding and heat treatment form.Stopper extend its front portion, back have a circle in the left side dish of diaphragm seal is arranged, there is the right side dish of a circle rear end, waist outline diameter between left side dish and the right dish is less than 4～12 millimeters on left side dish, right dish, stopper front end face center has one to draw the alloy silk in fixed end socket, the rear end face center of stopper has one to draw the alloy silk in fixed joint, and joint links to each other with carrying wirerope by the connecting hole of its axis part; Wherein the diameter of the nitinol alloy wire on the rear end face is tapered, and it is the thinnest and bend to circular-arcly to close on the alloy filament diameter of center, and its diameter is thinner by 50% than the alloy silk at other position, and heat treatment hardness is also low than other position.
Because patient's heart defect position difference is damaged not of uniform size, so this stopper also should be made plurality of specifications.
The invention has the beneficial effects as follows:
Thinner and hardness reduces because the alloy filament diameter of the right back-end disk face of this stopper center is than the alloy silk at other position, and the alloy silk of card center curves circular-arc, so stopper ratio when opening is easier to, left and right dish is easy to be preset shape after launching; Resistance is very little during the recovery stopper, makes to operate to be easy to finish, and has improved the safety and the success rate of operation so greatly, has solved the trouble and worry that stopper is feared the unsuccessful difficult withdrawal of contingency is installed in the past.The present invention adopts big waist structure in addition, so from good to neutrality, plugging effect is also fine.
(4) description of drawings
Accompanying drawing 1 is the surface structure sketch map of the present invention when opening.
Accompanying drawing 2 is front end face figure of the present invention.
Accompanying drawing 3 is rear end face figure of the present invention.
Accompanying drawing 4 is to be connected with the stopper of carrying wirerope to push the interior sketch map of delivery sheath.
Accompanying drawing 5 is that the sketch map when opening is coiled on a stopper left side.
Accompanying drawing 6 is stopper left side dish and waist sketch maps when all opening.
Accompanying drawing 7 is after stopper is all opened, the sketch map when breaking away from wirerope.
In the accompanying drawing, 1. left side dish, 2. right dish, 3. waist, 4. front end face, 5. rear end face, 7. end socket, 8. joint, 9. polyester diaphragm seal, 10. connecting hole, 11. delivery sheaths, 12. carry wireropes.
(5) specific embodiment
In the accompanying drawings, the main part of cardiac ventricular septal defect closer is made one good shape memory function is arranged, be subjected to external force traction and be strip, after removing, external force recovers the elastic network(s) of original preset profile immediately, elastic network(s) inside is provided with one deck polyester diaphragm seal (9), and stopper can be put into delivery sheath (11) after being shrunk to strip.Stopper is with the nitinol alloy wire braiding after molding and heat treatment form, extend its front portion, back have a circle left side dish (1), be sewed with diaphragm seal (9) with suture in the left side dish (1), there is the right side dish (2) of a circle stopper rear end, left waist (3) the outline diameter that coils between (1) and the right dish (2) coils (2) 4～12 millimeters less than the left side dish (1) and the right side, front end face (4) center has one to draw the alloy silk in fixed end socket (7), rear end face (5) center has one to draw the alloy silk in fixed joint (8), and joint (8) can link to each other with carrying wirerope (12) by the connecting hole (10) of its axis part; Wherein the diameter of the nitinol alloy wire on the rear end face (5) is tapered, and it is the thinnest and crookedly be circular-arc to close on the alloy filament diameter of center, and its diameter is thinner by 50% than the alloy silk at other position, and heat treatment hardness is also low than other position.
Use of the present invention is summarized as follows:
The stopper in the delivery sheath (11) link to each other with conveying wirerope (12) (accompanying drawing 4), along the track of the femoral vein of having set up to the ventricular septal heart defect position, at X-ray, under the cooperation of angiography and color ultrasound, deliver to left ventricle always, open left side dish (1) (accompanying drawing 5), pull back and carry wirerope (12) and delivery sheath (11), left side dish (1) and left ventricular wall are fitted, slowly open waist (accompanying drawing 6), all slowly open right dish (2) after normal again to observe the shutoff position, after checking that plugging effect is good, remove with carrying being connected of wirerope (12) and get final product (accompanying drawing 7).
Claims (4)
1. cardiac ventricular septal defect closer, it is characterized in that: the main part of this stopper is an elastic network(s) that good default profile memory function is arranged that is compiled into by nitinol alloy wire, be provided with a diaphragm seal in the elastic network(s), stopper extends the left side dish that there is a circle its front portion, back, there is the right side dish of a circle rear end, middle waist outline diameter is less than left side dish and right dish, stopper front end face center has one to draw the alloy silk in fixed end socket, the rear end face center of stopper has one to draw the alloy silk in fixed joint, joint links to each other with carrying wirerope by the connecting hole of its axis part, wherein the diameter of the nitinol alloy wire on the rear end face is tapered, and the alloy filament diameter of contiguous circle centre position is the thinnest and crookedly be circular-arc.
2. cardiac ventricular septal defect closer according to claim 1 is characterized in that: its diameter of alloy silk of adjacent back end face circle centre position is thinner by 50% than the alloy silk at other position.
3. cardiac ventricular septal defect closer according to claim 1 is characterized in that: the alloy silk heat treatment hardness of adjacent back end face circle centre position is also low than other position.
4. cardiac ventricular septal defect closer according to claim 1 is characterized in that: diaphragm seal is arranged in the dish of a left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100640596A CN101773418B (en) | 2009-01-12 | 2009-01-12 | Cardiac ventricular septal defect closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100640596A CN101773418B (en) | 2009-01-12 | 2009-01-12 | Cardiac ventricular septal defect closer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101773418A CN101773418A (en) | 2010-07-14 |
| CN101773418B true CN101773418B (en) | 2011-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100640596A Expired - Fee Related CN101773418B (en) | 2009-01-12 | 2009-01-12 | Cardiac ventricular septal defect closer |
Country Status (1)
| Country | Link |
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| CN (1) | CN101773418B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9861346B2 (en) | 2003-07-14 | 2018-01-09 | W. L. Gore & Associates, Inc. | Patent foramen ovale (PFO) closure device with linearly elongating petals |
| US9005242B2 (en) | 2007-04-05 | 2015-04-14 | W.L. Gore & Associates, Inc. | Septal closure device with centering mechanism |
| US9381006B2 (en) * | 2009-06-22 | 2016-07-05 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| US20120029556A1 (en) | 2009-06-22 | 2012-02-02 | Masters Steven J | Sealing device and delivery system |
| US9636094B2 (en) | 2009-06-22 | 2017-05-02 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| CN101961274A (en) * | 2010-10-27 | 2011-02-02 | 先健科技(深圳)有限公司 | Blood vessel necking device and controlled release system |
| CN103251432B (en) * | 2012-02-15 | 2015-07-01 | 郑州大学第一附属医院 | Antislip occluder for interatrial and ventricular septal defects |
| CN103284767A (en) * | 2012-03-05 | 2013-09-11 | 赵菁 | Lightweight atrium and ventricle coloboma occluder |
| CN102805673A (en) * | 2012-08-15 | 2012-12-05 | 上海形状记忆合金材料有限公司 | Occluder |
| CN102895046B (en) * | 2012-09-17 | 2016-04-06 | 邢泉生 | A kind of dry lower or two arterial valve mo(u)ld bottom half ventricular septal defect |
| US10828019B2 (en) | 2013-01-18 | 2020-11-10 | W.L. Gore & Associates, Inc. | Sealing device and delivery system |
| US9808230B2 (en) | 2014-06-06 | 2017-11-07 | W. L. Gore & Associates, Inc. | Sealing device and delivery system |
| CN107510481A (en) * | 2017-09-18 | 2017-12-26 | 广州派若弥医疗器械有限公司 | Skull base defects block repair apparatus |
| CN109077756A (en) * | 2018-09-07 | 2018-12-25 | 赵天力 | Heart atrial septal defect plugging device |
| CN109770964B (en) * | 2018-12-11 | 2020-11-17 | 先健科技(深圳)有限公司 | Plugging device and preparation method thereof |
| CN111820963A (en) * | 2020-08-17 | 2020-10-27 | 复旦大学附属中山医院 | Novel double-layer plugging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2351104Y (en) * | 1998-12-21 | 1999-12-01 | 李春江 | Reticular atrial and ventricular septal defect occluding device |
| CN201026219Y (en) * | 2006-10-23 | 2008-02-27 | 东莞科威医疗器械有限公司 | Plugging device for unclosed arterial duct or coloboma heart |
-
2009
- 2009-01-12 CN CN2009100640596A patent/CN101773418B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2351104Y (en) * | 1998-12-21 | 1999-12-01 | 李春江 | Reticular atrial and ventricular septal defect occluding device |
| CN201026219Y (en) * | 2006-10-23 | 2008-02-27 | 东莞科威医疗器械有限公司 | Plugging device for unclosed arterial duct or coloboma heart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101773418A (en) | 2010-07-14 |
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