CN104042258A - Plugging device for unclosed hole of patent ductus arteriosus - Google Patents
Plugging device for unclosed hole of patent ductus arteriosus Download PDFInfo
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- CN104042258A CN104042258A CN201410185942.1A CN201410185942A CN104042258A CN 104042258 A CN104042258 A CN 104042258A CN 201410185942 A CN201410185942 A CN 201410185942A CN 104042258 A CN104042258 A CN 104042258A
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- Prior art keywords
- hole
- memory alloy
- ductus arteriosus
- patent ductus
- shroud
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
- A61B17/12145—Coils or wires having a pre-set deployed three-dimensional shape
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a plugging device for an unclosed hole of a patent ductus arteriosus. The perforated plugging device for the unclosed hole of the patent ductus arteriosus comprises a front disk for plugging a gap, a cylindrical barrier part for blocking an unclosed ductus, and a through hole penetrating through the front disk and the cylindrical barrier part; one end of the cylindrical barrier part is connected with the front disk; the other end of the cylindrical barrier part is a closed end; the diameter of the front disk is greater than that of the cylindrical barrier part; the front disk, the cylindrical barrier part and the through hole are all formed by weaving a plurality of memory alloy wires; the memory alloy wires penetrate through the through hole to form the hole wall of the through hole and are wound to form the front disk and the cylindrical barrier part; the two ends of the memory alloy wires are fixed to the same fixing clamp for restricting the memory alloy wires; the memory alloy wires are interwoven to form an elastic mesh; a sealing film is arranged in the elastic mesh. According to the perforated plugging device for the patent ductus arteriosus, the shunt of aorta-pulmonary artery is limited, and the blood flow of the aorta of a high-pressure chamber is also prevented from flowing to the pulmonary artery; the volume overload and the pressure transfer of pulmonary vessels are lightened; serious consequences caused by sudden rise of the pulmonary artery pressure can also be prevented, so that the high pressure of a right heart system has release space.
Description
Technical field
Patent of the present invention relates to technical field of medical instruments, is specifically related to a kind of patent ductus arteriosus for the treatment of congenital heart disease stopper of boxing out.
Background technology
Patent ductus arteriosus (Personal Digital Assistant, PDA) is a kind of common congenital heart disease, and its lesion characteristic is that normally closed is failed in the abnormal traffic between aorta and pulmonary artery.Because aortal pressure is far away higher than Pulmonic pressure, therefore a large amount of blood flows to pulmonary artery from aorta.The less PDA of caliber because of blood shunt limited, little to people's hemodynamic effects, can treat.In caliber or large PDA because blood flows to pulmonary in a large number, over-burden to cause a left side to feel concerned about system, left ventricular hypertrophy, left heart failure, and engender with advancing age right ventricular hypertrophy, pulmonary hypertension, arrhythmia etc.Pulmonary hypertension most serious of all in above-mentioned complication, because it can not be cured, is called " cancer in cardiovascular diseases ", one after diagnosing after median survival interval be only 2～3 years, and serious symptom person prognosis is poorer.
When generally or pulmonary artery pressure early stage in the state of an illness is not high, therapeutic modality is very easy, what mainstream technology adopted is Wicresoft's transcatheter, open an osculum at femoral vein, insert seal wire and set up the track of femoral vein to heart, insert delivery sheath through track, be then connected with and carry the stopper of wirerope to arrive in the lump PDA place, under the supervision of X-ray, open stopper and get final product closed PDA, finally reclaim conveyer device, finally reach the object of clinical cure.But this treatment during just for nonjoinder pulmonary hypertension, when disease progression result when there is severe pulmonary hypertension really not so.Pulmonary hypertension guide and the first heart are got involved guide and are all explicitly pointed out, and when Congenital Cardiac Diseases with Severe Pulmonary Hypertension, inappropriate treatment (such as Wicresoft's transcatheter occlusion or surgical operation) all can be run counter to desire, and impels patient's Deaths.
Research now proved already, used conventional stopper can cause the right ventricle cavity pressure of high pressure to discharge nowhere, the quick exhaustion of the right heart, arrhythmia, sudden death, and the existence time limit is lower than not performing an operation.Therefore this class patient really becomes " the cardiovascular cancer " that can cure, can do without operation without medicine.Multicenter study has been explored targeted drug treatment both at home and abroad, can to a certain degree improve patient's symptom, but existence the time limit without change, targeted drug somewhat expensive in addition, (as 50,000 yuan of Wan Tawei every months, bosentan every month 30,000 yuan) life-time service unrealistic.
The irreversible change of a large amount of left to right shunt lung of congenital heart disease blood vessel, closes by force damaged meeting and causes right ventricular pressure to discharge nowhere, occurs right heart failure and sudden death, can make again the state of an illness further worsen but let alone damaged existence.
Summary of the invention
For the deficiency existing in background technology, the patent ductus arteriosus that the object of the present invention is to provide a kind of Minimally Invasive Surgery the to use stopper of boxing out, merges death time of severe pulmonary hypertension patient, reduction of patient clinical symptoms for postponing patent ductus arteriosus.
For achieving the above object, the patent ductus arteriosus of the present invention design stopper of boxing out, is characterized in that: comprise sealing gap shroud, block the column blocking part of patent conduit and run through above-mentioned shroud and the through hole of column blocking part; Described column blocking part one end is connected with described shroud, and the other end is sealed end; The diameter of described shroud is greater than the diameter of described column blocking part; Described shroud, described column blocking part and described through hole are all to be formed by many memory alloy wire establishments; Described memory alloy wire forms the hole wall of described through hole through described through hole, and coiling forms described shroud and described column blocking part, and the two ends of described memory alloy wire are to be all fixed on the same stationary fixture of the described memory alloy wire of constraint; Many described memory alloy wires intermesh into elastic network(s), in described elastic network(s), are provided with diaphragm seal.
Further, described stationary fixture comprises the joint coaxial and unsettled with described through hole, and the sidewall of described joint connects at least one alloy connection strap; The two ends of described memory alloy wire are fixed on described alloy connection strap.
Further, the external diameter of described joint is less than the diameter of described through hole.
Again further, the span of the external diameter of described joint is 1-3 rice.
As preferred version, on the sidewall of described joint, connect three connection straps, the angle between adjacent described connection strap is 120 °; The two ends of described memory alloy wire are fixed on described connection strap.
Further, the diameter of described through hole is 3-6 millimeter.
The invention has the beneficial effects as follows: with respect to existing stopper, the present invention has increased a through hole, so not only limit most aortas-Pulmonic shunting, large damaged become less damaged, both the aortic flow that had limited high pressure chest flows to pulmonary artery, alleviates pulmonary vascular volume overload and pressure and passes to; Can prevent again pulmonary artery pressure to raise and cause serious consequence suddenly simultaneously.So, in the time that Pulmonic pressure exceedes aortal pressure, blood flow can pass through reserved aperture shunting decompression, and the height that makes the right side feel concerned about system is pressed with the space of release, saves patients with pulmonary hypertension in late period.So, make first the treatment of incorrigible whole PDA merging in latter stage severe pulmonary hypertension become possibility; The unsettled joint of the right card of stopper can connect conveying wirerope easily, the release of the control stopper of safety; Stopper central authorities box out, and have solved pulmonary hypertension is installed after stopper is in the past continued to rise and cause this complication of right heart failure; Limit most of aorta and flowed to Pulmonic blood, cured disease from cause of disease aspect, made the state of an illness not in progress.
Brief description of the drawings
Structural representation when Fig. 1 is of the present invention opening,
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1,
Fig. 3 is that schematic diagram is looked on the right side of Fig. 1;
Fig. 4 is to being the schematic diagram that the present invention discharges completely;
Fig. 5 is a kind of embodiment of stationary fixture of the present invention;
Fig. 6 is perspective view of the present invention, and wherein diaphragm seal is not shown,
Fig. 7 is the wherein structural representation of two memory alloy wire coilings of the present invention.
In figure: shroud 1, column blocking part 2, through hole 3, memory alloy wire 4, stationary fixture 5, delivery sheath 6, conveying wirerope 7;
Wherein: joint 5.1, alloy connection strap 5.2.
In Fig. 1, in order to represent through hole disclosed by the invention, therefore the memory alloy wire specially through hole being gone out conceal, to reach better understanding effect; And in Fig. 4, be in order to express the structure after the present invention discharges, so not shown through hole.
Detailed description of the invention
As shown in Figure 1 to Figure 3, the patent ductus arteriosus of the present invention design stopper of boxing out, the column blocking part 2 of the obstruction patent conduit that comprise the shroud 1 of sealing gap, is connected with shroud 1, and run through the through hole 3 of above-mentioned shroud 1 and column blocking part 2; Described column blocking part 2 one end are connected with described shroud 1, and the other end is sealed end; The diameter of described shroud 1 is greater than the diameter of described column blocking part 3; Described shroud 1 and column blocking part 2 are the elastic network(s)s that are compiled into by many memory alloy wires 4, in described elastic network(s), are provided with diaphragm seal; One end of every described memory alloy wire 4 is all the hole wall that passes and form described through hole 3 from described through hole 3, other end coiling forms the outline of described shroud 1 and described column blocking part 2, and the two ends of described memory alloy wire 4 are to be all fixed on the same stationary fixture 5 of the described memory alloy wire 4 of constraint.Like this, every described memory alloy wire 4 one end are fixed on stationary fixture 5, the other end passes from through hole 3 and wraparound is fixed on stationary fixture 5, and described memory alloy wire 4 intersections are compiled into elastic network(s), and the elastic network(s) of described establishment molding not only forms shroud 1 and column blocking part 2, and form the space for placing diaphragm seal, formed the hole wall of described through hole 3 simultaneously.Utilize the through hole 3 arranging damagedly greatly to become less damaged, the aortic flow that had both limited high pressure chest flows to pulmonary artery, alleviates pulmonary vascular volume overload and pressure to pass to; Can prevent again pulmonary artery pressure to raise and cause serious consequence suddenly simultaneously.So, in the time that Pulmonic pressure exceedes aortal pressure, blood flow can pass through reserved aperture shunting decompression, and the height that makes the right side feel concerned about system is pressed with the space of release, saves patients with pulmonary hypertension in late period.
Again as shown in Figure 3, in figure, provide a kind of embodiment that how to retrain memory alloy wire of the present invention 4 ends: stationary fixture 5 comprises the joint 5.1 coaxial and unsettled with described through hole 3, on the sidewall of described joint 5.1, connect three alloy connection straps 5.2, the angle between adjacent described alloy connection strap 5.2 is 120 °; The two ends of described memory alloy wire 4 are fixed on described alloy connection strap 5.2.Like this, by the carrying of alloy connection strap 5.2, make unsettled through hole 3 places that are arranged on of joint 5.1, and preferred, the external diameter of described joint 5.2 is less than the diameter of described through hole 3.Certainly, the quantity of alloy connection strap 5.2 and arrangement can have a variety of, but have such alloy connection strap 5.2 support bearing joints 5.1 at least, and the stopper that the present invention designs can be admitted in human body.
Conventionally, the diameter of described through hole 3 is 3-6 millimeter.The span of the external diameter of joint 5.2 is 1-3 millimeter.
Use procedure of the present invention is summarized as follows: the joint 5.1 of the stopper of the present invention's design in delivery sheath 6 is connected with carrying wirerope 7, arrives heart along the femoral vein having established, under X-ray, angiography etc. coordinate, directly send to aorta; Open shroud 1, pull back and carry wirerope 7 and delivery sheath 6, shroud 1 and patent ductus arteriosus aorta side are tightly fitted; Then, slowly open column blocking part 2, all slowly open column blocking part 2 after normal more completely Synchronous shutoff position; Finally, check that plugging effect is good, break connector 5.2 is connected with conveying wirerope 7, as shown in Figure 4.
In the present invention, the external diameter of disclosed joint 5.1 is less than the diameter of through hole 3, and such benefit is, the joint face of joint 5.1 and alloy connection strap 5.2 can be in same plane with alloy connection strap 5.2, and does not affect blood flow and pass through from through hole 3.When the external diameter of joint 5.1 is greater than the diameter of through hole 3, so just need alloy connection strap 5.2 along outwards outstanding one section 5.21, the axis of column blocking part 2, thereby eliminate joint 5.1 on blood flow by the impact of through hole 3, as shown in Figure 5.
In Fig. 5, union joint 5.1 goes out to be threaded with the junction of delivery sheath 6, and the screwed hole of union joint 5.1 is blind hole, and this screwed hole can be also through hole certainly; No matter be that blind hole or through hole all do not form impact to core idea of the present invention.
As shown in Figure 6 and Figure 7, to memory alloy wire 4 of the present invention, how coiling forms described through hole 3 and described shroud 1, described column blocking part 2 describes, for convenience of explanation a described memory alloy wire 4 is divided into: the Part I 4.1 that forms described through hole 3 hole walls, described hole wall is also netted, form the Part II 4.2 of shroud 1 end profile, form the Part III 4.3 of shroud 1 waist profile, form the Part IV 4.4 of shroud 1 and column blocking part 2 joint face profiles, form the Part V 4.5 of column blocking part 2 waist profiles, and formation column blocking part 2 end profile---that is to say the Part VI 4.6 of sealed end.Wherein, Part VI 4.6 is by the two ends of described memory alloy wire 4 and the place, junction of described alloy connection strap 5.2.In the L shaped space forming at described memory alloy wire 4, be provided with diaphragm seal.
Claims (6)
1. the patent ductus arteriosus stopper of boxing out, is characterized in that: comprise sealing gap shroud, block the column blocking part of patent conduit and run through above-mentioned shroud and the through hole of column blocking part; Described column blocking part one end is connected with described shroud, and the other end is sealed end; The diameter of described shroud is greater than the diameter of described column blocking part; Described shroud, described column blocking part and described through hole are all to be formed by many memory alloy wire establishments; Described memory alloy wire forms the hole wall of described through hole through described through hole, and coiling forms described shroud and described column blocking part, and the two ends of described memory alloy wire are to be all fixed on the same stationary fixture of the described memory alloy wire of constraint; Many described memory alloy wires intermesh into elastic network(s), in described elastic network(s), are provided with diaphragm seal.
2. the patent ductus arteriosus according to claim 1 stopper of boxing out, is characterized in that: described stationary fixture comprises the joint coaxial and unsettled with described through hole, and the sidewall of described joint connects at least one alloy connection strap; The two ends of described memory alloy wire are fixed on described alloy connection strap.
3. the patent ductus arteriosus according to claim 2 stopper of boxing out, is characterized in that: the external diameter of described joint is less than the diameter of described through hole.
4. according to the stopper of boxing out of the patent ductus arteriosus described in claim 2 or 3, it is characterized in that: the span of the external diameter of described joint is 1-3 millimeter.
5. the patent ductus arteriosus according to claim 2 stopper of boxing out, is characterized in that: on the sidewall of described joint, connect three connection straps, the angle between adjacent described connection strap is 120 °; The two ends of described memory alloy wire are fixed on described connection strap.
6. the patent ductus arteriosus according to claim 1 stopper of boxing out, is characterized in that: the diameter of described through hole is 3-6 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185942.1A CN104042258B (en) | 2014-05-05 | 2014-05-05 | Patent ductus arteriosus is boxed out stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185942.1A CN104042258B (en) | 2014-05-05 | 2014-05-05 | Patent ductus arteriosus is boxed out stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104042258A true CN104042258A (en) | 2014-09-17 |
| CN104042258B CN104042258B (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410185942.1A Expired - Fee Related CN104042258B (en) | 2014-05-05 | 2014-05-05 | Patent ductus arteriosus is boxed out stopper |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2574705Y (en) * | 2002-10-15 | 2003-09-24 | 王广义 | Male sex health care nursing pad |
| WO2007054116A1 (en) * | 2005-11-11 | 2007-05-18 | Occlutech Gmbh | Occlusion instrument for closing a cardiac auricle and a method for producing such an occlusion instrument |
| WO2007110195A1 (en) * | 2006-03-24 | 2007-10-04 | Occlutech Gmbh | Occlusion instrument and method for its production |
| CN200966656Y (en) * | 2006-11-27 | 2007-10-31 | 余静 | Device for repair of septal defect of heart |
| CN201905941U (en) * | 2010-12-24 | 2011-07-27 | 王广义 | Atrial septal defect occluder |
-
2014
- 2014-05-05 CN CN201410185942.1A patent/CN104042258B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2574705Y (en) * | 2002-10-15 | 2003-09-24 | 王广义 | Male sex health care nursing pad |
| WO2007054116A1 (en) * | 2005-11-11 | 2007-05-18 | Occlutech Gmbh | Occlusion instrument for closing a cardiac auricle and a method for producing such an occlusion instrument |
| WO2007110195A1 (en) * | 2006-03-24 | 2007-10-04 | Occlutech Gmbh | Occlusion instrument and method for its production |
| CN200966656Y (en) * | 2006-11-27 | 2007-10-31 | 余静 | Device for repair of septal defect of heart |
| CN201905941U (en) * | 2010-12-24 | 2011-07-27 | 王广义 | Atrial septal defect occluder |
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| Publication number | Publication date |
|---|---|
| CN104042258B (en) | 2016-11-23 |
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Granted publication date: 20161123 Termination date: 20170505 |