CN2526019Y - Blocking apparatus for patent arterial duct and arteriovenous fistula - Google Patents
Blocking apparatus for patent arterial duct and arteriovenous fistula Download PDFInfo
- Publication number
- CN2526019Y CN2526019Y CN01254798U CN01254798U CN2526019Y CN 2526019 Y CN2526019 Y CN 2526019Y CN 01254798 U CN01254798 U CN 01254798U CN 01254798 U CN01254798 U CN 01254798U CN 2526019 Y CN2526019 Y CN 2526019Y
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- China
- Prior art keywords
- arteriovenous fistula
- network
- net support
- ductus arteriosus
- patent ductus
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Abstract
The utility model relates to a blocking apparatus for patent arterial duct and arteriovenous fistula, comprising a stopper-shaped net support or dumbbell-shaped net support, an expansion duct which is connected with the net support and a top duct, and a leading steel wire which crosses through the top duct. The net support is a self-expansion support made of Ni Ti shape memory alloy steel wire. A plurality of medical plastic tabs which have elasticity and even bubble and act as a valve are arranged inside the net support. When the net support is released after the conveyance to the patent arterial duct and arteriovenous fistula, the net support will expand automatically to shape stopper-shaped or dumbbell-shaped elastic structure and the net support is fixedly stabilized at two ends of the patent arterial duct or arteriovenous fistula. The transition temperature of the self-expansion is 33 centigrade degree, when the temperature excels 33 centigrade degree, the net support reaches the good expansion status; the expanded stopper-shaped or dumbbell-shaped elastic support can fix on the PDA or fistula. The utility model is easy in operation, safe and reliable and constant in curative effect. The utility model can be operated only with the clairvoyance of TV without the filming, being applicable for most hospitals.
Description
Technical field
This utility model relates to medical apparatus and instruments, and particularly a kind of locking device for the treatment of the patent ductus arteriosus and the arteriovenous fistula of congenital heart disease is a kind of intervention closed treating device.
Background technology
Patent ductus arteriosus (PDA), pulmonary artery septal defect, pulmonary arteriovenous fistula, coronary arteriovenous fistula, peripheral arteriovenous fistula etc. all belong to congenital heart disease or angiopathy, the sickness rate of patent ductus arteriosus (PDA) cardiopathic second of the nature of then taking the lead, need open when having an operation under breast knot bundle or the extracorporeal circulation and carry out repairing operation, it has a big risk, recover slow, the expense height.Coronary arteriovenous fistula, pulmonary arteriovenous fistula, peripheral arteriovenous fistula etc. often also need operative treatment, exist above-mentioned shortcoming equally.
From usefulness such as Porstmann in 1967 are non-open that the breast method is stifled and close PDA and succeed after, non-ly open that breast is stifled to close the first-selected Therapeutic Method that art has become treatment PDA.But case is selected comparatively strict, be generally used in more than 6 years old, the child of PDA internal diameter below 6.0mm, the adult also only is used in the case of internal diameter less than 8mm,, use in recent years and be tending towards reducing because vascular complication is more.
1979, Rashikind used two umbellate form stoppers and succeeds by the stifled PDA that closes infant of femoral vein.Use stainless steel silk because of this technology and make umbrella stand, wrap up in the thin film with Ivalon outward, can especially be applied to infant by the vagina vasorum of 8F, the somebody reports to block up and closes the neonatal PDA of 3.5kg, now extensively carries out in American-European countries.But this technology is only applicable to the PDA internal diameter less than 7mm person, and PDA can not be oversize; And there is 3% stopper to drop to pulmonary artery or aorta; Postoperative is followed up a case by regular visits to through colorful ultrasonic, and 10%～20% has residual shunt in two years; This apparatus costliness is not suitable for extensively carrying out in developing country.
Have in recent years and use the stifled report that closes PDA of Spiral Coil device, although the postoperative residue shunting is lower than the Rashikind method, but still up to 14%, generally apply to the patient of PDA internal diameter less than 4mm, and blocking up fully at once and closing success rate is 70.2%, because of the indication limitation, can not extensively carry out.
The someone uses that the Amplatzer closing stopper is stifled to be closed medium and bigger PDA in the recent period, but it stifledly fully at once closes rate about 30%, still in clinical trial.This device costliness, incompatibility is extensively carried out in China.
Summary of the invention
Task of the present utility model provides the locking device of a kind of patent ductus arteriosus and arteriovenous fistula, it is by interventional therapy PDA or arteriovenous fistula, bottle stopper shape after the expansion or dumbbell shaped structure can be securely fixed in the two ends of PDA or arteriovenous fistula, have solved the stifled problem of closing.
The technical solution of the utility model is as follows:
The locking device of a kind of patent ductus arteriosus and arteriovenous fistula, it comprises a bottle stopper shape network or dumbbell shaped network, one dilating catheter that is connected with network and top plug conduit, and a guide wire in the top plug conduit, described net dress support is a kind of self-expandable stent that is compiled into by the Ultimum Ti steel wire, be lined with the medical plastic sheet of the uniform tool valve of several pieces high resiliences and foam effect in the network, network expands the two ends that formation bottle stopper shape or dumbbell shaped elastic construction are securely fixed in patent ductus arteriosus or arteriovenous fistula mouth voluntarily by after getting involved and be transported to the release of patent ductus arteriosus or arteriovenous fistula oral area position.
This utility model utilizes the Ultimum Ti steel wire to be compiled into bottle stopper shape or dumbbell shaped self-expandable stent, liner medical foam Plastic valve, utilize bracket conveyer to deliver to PDA or fistula oral area position after, this support can expand voluntarily and form bottle stopper shape or dumbbell shaped structure.The conversion temperature of this self-expandable stent is 33 ℃, surpasses 33 ℃ and can reach good swelling state, and the elastic support that is bottle stopper shape or dumbbell shaped after its expansion can be securely fixed in PDA or the fistula mouth.The elastic reaction of medical foam Plastic valve is convenient to withdrawing from of carrier, has simplified to block up and has closed device, operates more simple.Support inner foam sample network structure easily makes platelet, cellulose and blood coagulation substance be detained, and form thrombosis, and netted spline structure is easy to formation, growth, the covering of angiogenesis endotheliocyte.
Major advantage of the present utility model is as follows:
1. easy and simple to handle: utilize this device to discharge automatically to block up and close, expanding without sacculus can be from swollen bottle stopper shape or the dumbbell shaped structure of becoming, simple to operate, has shortened operating time effectively, has avoided the stopper displacement or comes off.
2. applied widely: diameter is 1.2～2mm before the expansion of this locking device, and is little to blood vessel injury, and expansion back internal diameter can reach 2～20mm, can be fit to the PDA or the fistula mouth of different sizes.
3. endothelialization is fast: the memory alloy stent that is bottle stopper shape or dumbbell shaped after the release can be securely fixed in the PDA fistula mouth, medical foam sample network structure easily makes platelet, cellulose and blood coagulation substance be detained in the support, form thrombosis, after support is inserted tube chamber, the corresponding lumen wall of metal branch pole pair can produce a kind of " embedding " effect, is easy to formation, growth, the covering of angiogenesis endotheliocyte.
4. cost is low: because each prong material and conveyer device are domestic material, produced by domestic manufacturer, stifledly close device and compare with external, reduced cost effectively, be fit to the national conditions of developing country, be easy to promote.
Description of drawings
Fig. 1 is the locking device structural representation of a kind of patent ductus arteriosus of the present utility model and arteriovenous fistula.
Fig. 2 is the user mode figure after Fig. 1 locking device discharges self-expandable stent.
Fig. 3 is the structural representation that Fig. 1 locking device has the bottle stopper shape network of foamed sheet.
Fig. 4 is the structural representation that Fig. 1 locking device has the dumbbell shaped network of foamed sheet.
The specific embodiment
Referring to Fig. 1 to Fig. 4, the locking device of a kind of patent ductus arteriosus and arteriovenous fistula comprises a bottle stopper shape network 1 or a dumbbell shaped network 5, one dilating catheter that is connected with network 2 and top plug conduit 6, and a guide wire 3 in the top plug conduit 6.
Network is a kind of self-expandable stent that is compiled into by the Ultimum Ti steel wire, has good plasticity when temperature is 4 ℃, when temperature inversion is 33 ℃ or when above, this support expands at once and reverts to original state.Be lined with the medical plastic sheet 4 of the uniform tool valve of several pieces high resiliences and foam effect in the network.This plastic sheet 4 has good compression, is solid, shaped after the moisture content volatilization, can return to original volume in 30 seconds in room temperature liquid, and its cross section central authorities can be by the top plug conduit 6 of different thicknesses.
The front end of top plug conduit 6 carefully position is set in interior foamed sheet 4 central authorities of network, and effect fixing or the propelling movement network is played in the thicker part position of top plug conduit 6.Top plug conduit 6 passes the centre of dilating catheter 2 and flexibly connects with it.Guide wire 3 is in dilating catheter 2 and pass the centre that conduit 6 is filled on the top, and when this locking device arrived ductus arteriosus or arteriovenous fistula central authorities, conduit 6 afterbodys were filled on fixing top, and dilating catheter 2 is gently moved backward.
After network is transported to patent ductus arteriosus or the release of arteriovenous fistula oral area position by bracket conveyer, expand voluntarily and form bottle stopper shape or dumbbell shaped elastic construction, can be securely fixed in the two ends of patent ductus arteriosus or arteriovenous fistula mouth, be not subjected to the impact of blood flow and be shifted, thereby obtain the good stifled effect of closing.Network expands voluntarily and expands the back internal diameter and reach 2～20mm, is fit to the patent ductus arteriosus or the arteriovenous fistula mouths of different sizes.
The network liner can play the valve effect that stops blood flow with the compression or the expansion of network with the medical foam plastic sheet.The netted spline structure of foamed sheet 4 easily makes platelet, cellulose and blood coagulation substance be detained, and forms thrombosis, and is easy to formation, growth, the covering of angiogenesis endotheliocyte, reaches the purpose of closed permanent.The end band film leakproof blood device of dilating catheter 2.
When using this utility model, through skin puncture femoral artery, insert band film dilating catheter, send into the cardiac catheter of J type, arrive pulmonary artery or arrive vein by PDA by the fistula mouth, after the pressure measurement conduit is delivered to aorta or arterial end and carry out aorta or angiography, to show the internal diameter and the form of PDA or fistula of artery mouth, and the arteriovenous locking device of the present utility model of selection appropriate size, again by inserting the fiber guide wire under the J type catheter guidance to pulmonary artery branch or vein, send into the locking device of PDA and arteriovenous fistula at x-ray fluoroscopy lower edge guide wire, fixing top plug conduit, slowly withdraw from dilating catheter, bottle stopper shape or dumbbell shaped network are expanded fully voluntarily, fixing dilating catheter then will push up the plug conduit and retreat in the dilating catheter together with guide wire and withdraw from externally, and network is stayed in PDA or the leak to realize stifled closing together with foamed sheet.
This utility model is easy and simple to handle, safety, reliable, and curative effect is sure, can not have the film radiography, only has under the videofluoroscopic condition and operates, and is suitable for most of hospitals and uses.
Claims (3)
1. the locking device of patent ductus arteriosus and arteriovenous fistula, it comprises a bottle stopper shape network or dumbbell shaped network, one dilating catheter that is connected with network and top plug conduit, and a guide wire in the top plug conduit, it is characterized in that, described net dress support is a kind of self-expandable stent that is compiled into by the Ultimum Ti steel wire, be lined with the medical plastic sheet of the uniform tool valve of several pieces high resiliences and foam effect in the network, network expands the two ends that formation bottle stopper shape or dumbbell shaped elastic construction are securely fixed in patent ductus arteriosus or arteriovenous fistula mouth voluntarily by after getting involved and be transported to the release of patent ductus arteriosus or arteriovenous fistula oral area position.
2. the locking device of patent ductus arteriosus according to claim 1 and arteriovenous fistula is characterized in that, described network expands voluntarily and expands the back internal diameter and reach 2～20mm, is fit to the patent ductus arteriosus or the arteriovenous fistula mouths of different sizes.
3. the locking device of patent ductus arteriosus according to claim 1 and arteriovenous fistula is characterized in that, described network is transported to patent ductus arteriosus or arteriovenous fistula oral area position by bracket conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01254798U CN2526019Y (en) | 2001-11-21 | 2001-11-21 | Blocking apparatus for patent arterial duct and arteriovenous fistula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01254798U CN2526019Y (en) | 2001-11-21 | 2001-11-21 | Blocking apparatus for patent arterial duct and arteriovenous fistula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2526019Y true CN2526019Y (en) | 2002-12-18 |
Family
ID=33664048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01254798U Expired - Fee Related CN2526019Y (en) | 2001-11-21 | 2001-11-21 | Blocking apparatus for patent arterial duct and arteriovenous fistula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2526019Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198025A (en) * | 2011-05-04 | 2011-09-28 | 迟立群 | Stent graft |
| CN104586457A (en) * | 2015-01-15 | 2015-05-06 | 李国庆 | Blood vessel plugging device for coronary perforation and application |
| CN104837514A (en) * | 2012-08-01 | 2015-08-12 | 拉米内特医疗技术有限公司 | Apparatus for configuring an arteriovenous fistula |
| US10004508B2 (en) | 2011-08-01 | 2018-06-26 | Laminate Medical Technologies Ltd. | Vessel shaping devices and methods |
-
2001
- 2001-11-21 CN CN01254798U patent/CN2526019Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198025A (en) * | 2011-05-04 | 2011-09-28 | 迟立群 | Stent graft |
| US10004508B2 (en) | 2011-08-01 | 2018-06-26 | Laminate Medical Technologies Ltd. | Vessel shaping devices and methods |
| US10905429B2 (en) | 2011-08-01 | 2021-02-02 | Laminate Medical Technologies Ltd. | Vessel shaping devices and methods |
| US11744590B2 (en) | 2011-08-01 | 2023-09-05 | Laminate Medical Technologies | Vessel shaping devices and methods |
| CN104837514A (en) * | 2012-08-01 | 2015-08-12 | 拉米内特医疗技术有限公司 | Apparatus for configuring an arteriovenous fistula |
| US10299794B2 (en) | 2012-08-01 | 2019-05-28 | Laminate Medical Technologies Ltd. | Apparatus for configuring an arteriovenous fistula |
| US10307164B2 (en) | 2012-08-01 | 2019-06-04 | Laminate Medical Technologies Ltd. | Method for configuring an arteriovenous fistula |
| US11633186B2 (en) | 2012-08-01 | 2023-04-25 | Laminate Medical Technologies Ltd. | Method for configuring an arteriovenous fistula |
| CN104586457A (en) * | 2015-01-15 | 2015-05-06 | 李国庆 | Blood vessel plugging device for coronary perforation and application |
| CN104586457B (en) * | 2015-01-15 | 2017-02-22 | 李国庆 | Blood vessel plugging device for coronary perforation and application |
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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: 20021218 Termination date: 20091221 |