CN2518475Y - Patent arterial duct blocking device - Google Patents
Patent arterial duct blocking device Download PDFInfo
- Publication number
- CN2518475Y CN2518475Y CN 01274499 CN01274499U CN2518475Y CN 2518475 Y CN2518475 Y CN 2518475Y CN 01274499 CN01274499 CN 01274499 CN 01274499 U CN01274499 U CN 01274499U CN 2518475 Y CN2518475 Y CN 2518475Y
- Authority
- CN
- China
- Prior art keywords
- stopper
- utility
- support
- blocking device
- model
- 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 - Lifetime
Links
- 230000000903 blocking effect Effects 0.000 title abstract 9
- 210000000709 aorta Anatomy 0.000 claims abstract description 18
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 7
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 4
- 210000003017 ductus arteriosus Anatomy 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 13
- 210000001147 pulmonary artery Anatomy 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 241001411320 Eriogonum inflatum Species 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000009954 braiding Methods 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000008280 blood Substances 0.000 abstract description 3
- 210000004369 blood Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000009941 weaving Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 208000003278 patent ductus arteriosus Diseases 0.000 description 7
- 230000017531 blood circulation Effects 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 230000006386 memory function Effects 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 208000002330 Congenital Heart Defects Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 208000028831 congenital heart disease Diseases 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000001361 intraarterial administration Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
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- Prostheses (AREA)
Abstract
The utility model relates to a patent arterial duct blocking device. Existing blocking device has many defects. The utility model provides a patent arterial duct blocking device comprising a metal alloy gold wire with memorability by weaving, and the device essentially includes a bracket (3) made of nickel titanium wire with superelasticity, a polyester fiber blocking layer (4) imbedded in the bracket (3) of the aforesaid blocking device, and a transport connection control unit (1) fixed on one end of the bracket (3) of the aforesaid blocking device. The utility model arranges the disc on the side of the aorta by a particular weaving technique, thereby the disc is neat and the bad effect to the blood can be avoided by the uneven aorta side caused by the fixed screws of the polarized blocking device. Besides, the utility model is beneficial for the epithelization after the blocking device is planted into; the joint between the nickel titanium wire and the stainless screw is not provided with a welding spot by using the newest technical art at the same time, differing from the wire of the nickel titanium wire and the steel sleeve which is easy to run away caused by unstable welding, thereby, the utility model has broad potential application.
Description
Technical field
This utility model relates to technical field of medical instruments, is specifically related to a kind of novel patend ductus arteriosus occluder.
Background technology
Patent ductus arteriosus (Patent Ductus Arteiosus, PDA) be a kind of common congenital heart disease, traditional therapy for this patent ductus arteriosus was a surgical operation in the past, and surgical operation need be opened breast, big to patient trauma, the complication rate height, and stay the scar of operative incision at body surface.Now, along with continuous progress in science and technology, the particularly continuous development of material science makes the patient of congenital heart arter patent ductus also can adopt Wicresoft's interventional method treatment.Since 1976, successively invented multiple shutoff equipment both at home and abroad, explore to use the method for sending into the closed ductus arteriosus of stopper through the heart conduit, reach the curative effect suitable, the complication that also can avoid simultaneously transfusing blood and cause by blood transfusion and surgical operation with the surgery open chest surgery.
At present, for being widely accepted of the interventional therapy of ductus arteriosus, can replace surgical operation therapy basically at home and abroad, its key technology is the stopper that is used for closed ductus arteriosus.Stopper commonly used is clinically at present formed by the braiding of superelastic nickel titanium alloy wire, is sewed with 3 or 4 floor height density polyester fiber films in the support of mushroom umbellate form, and self-expanding is strong, and is withstand voltage indeformable.Can pass through F6 or F7 sheath pipe again, send into stopper through Venous system, improper as the selection of stopper size, can withdraw from by delivery sheath again, reselect sizeable stopper.But in clinical practice, we find some ductus arteriosus in a tubular form, and the narrowest position is in the pulmonary artery side, and the thin edge such as the blade of its mushroom cap umbrella sheet might produce dissection to the tube wall of ductus arteriosus, and cause severe complications.Secondly, the umbrella sheet is than the big 3mm of diameter of its column part, as is placed on the tubulose intra-arterial, and its configuration is unfavorable for and the reclining of ductus arteriosus.In addition, agaric umbrella sample stopper has fixed screw on the umbrella sheet of aorta side, exceed the umbrella sheet, is unfavorable for after the shutoff epithelization on the stopper surface, and might influences regional flow.
Summary of the invention
The purpose of this utility model just provides a kind of novel patend ductus arteriosus occluder rational in infrastructure.
A kind of novel patend ductus arteriosus occluder that this utility model provides has the braiding of Memorability metal alloy wires by one and forms, and it comprises that mainly the stake body of a nitinol alloy wire, intermediary polyester fiber film barrier layer and a transmission that links to each other with described stake body are connected control part.
A kind of stopper support that this utility model provides is woven into two flat bottom bags shape cylindrical stents by certain route by a nitinol alloy wire on mould, the transmission of one end connects control and uses the fixing control of medical stainless steel screw, should there be solder joint between screw and the titanium-nickel wire, but adopt the kneading technology to make, its pulling force is better than existing support by being welded at present greatly, and difficult drop-off; Simultaneously, above-mentioned screw tilts into the certain angle of support planar base surface, like this, can help tissue in the stopper superficial epitheliumization.On the other end of described metal rack, there is a special inclination to go into the certain angle inclined-plane of support planar base surface, like this, can helps tissue equally in the stopper superficial epitheliumization.
The stopper that this utility model provides is put between the special outer mold, after heat treatment forms the bottle stopper shape, and the control treatment temperature, reaches the super-elasticity and the memory function that need.
Go into the multi-layered polyester fibrous membrane at the support liner in the middle of the stopper that this utility model provides, use medical suture polyester fiber film and support are stitched together, so just played the effect that intercepts blood flow.
During operation, earlier stopper is connected with push rod, draw in the short sheath, send in the long sheath pipe through short sheath, through delivery sheath stopper is pushed to the aorta side of ductus arteriosus by push rod, open by the super-elasticity of self after going out sheath the front portion of stopper, pull back to the aorta end of ductus arteriosus, if any resistance, fixing push rod then, return and remove the sheath pipe, discharge the rear portion of stopper, stopper is blocked in the ductus arteriosus by the super-elasticity complex effect of self, as pushing and stopper fixed-site when pulling back, then can discharge stopper, finish operation.
Show that through a large amount of clinical researches the patent ductus arteriosus great majority are funnel-form and tubulose, greater than the pulmonary artery side, the narrow of some tubulose ductus arteriosus is located at the pulmonary artery side at the diameter of aorta side.Research and analyse fully that the various stoppers that use clinically at present are excellent, on the basis of shortcoming, this utility model provides a kind of stopper of novel " bottle stopper shape ", use the stopper support that homemade high resiliency nitinol alloy wire is made, middle break joint is with the polyester of high density fibrous membrane, in order to intercept blood flow.Be linear when stopper is subjected to external force traction, external force is removed the back and is restored to the original state, and therefore can carry through the conduit of F6-F8 (diameter 2-2.6mm), also is fit to infant patient PDA shutoff.In the ductus arteriosus of shutoff, tube wall is not had dissection yet,, and can in ductus arteriosus, produce good reclining applicable to various form patent ductus arteriosuss.In addition, adopt special knitting skill, make the disk of aorta side, make it smooth, avoided using clinically at present aorta side out-of-flatness that stopper fixed screw more widely causes and to the adverse effect of blood flow, and helped stopper and implant epithelium posterius formation.Below, in conjunction with the accompanying drawings and embodiments this utility model stopper is described in detail.
The stopper perspective view that description of drawings Fig. 1 provides for this utility model.The stopper aorta end face structure sketch map that Fig. 2 provides for this utility model.The stopper support vertical section structure view that Fig. 3 provides for this utility model.The stopper pulmonary artery end structure sketch map that Fig. 4 provides for this utility model.Fig. 5 is the tensile test figure that uses the transmission connection control part of stopper at present.Fig. 6 connects the tensile test figure of control part for this utility model transmission.
The specific embodiment
As shown in drawings, a kind of novel patend ductus arteriosus occluder that this utility model provides has the braiding of Memorability metal alloy wires by one and forms, and it mainly comprises: the support 3 intermediary polyester fiber film barrier layers 4 that the support 3 of superelastic nickel titanium alloy wire, lining are gone into above-mentioned stopper are connected control part 1 with a transmission that is fixed on above-mentioned stopper support 3 one ends.
Nitinol alloy wire described in the utility model has constituted the support 3 of stopper, this metal has memory function, can pre-determine the shape that needs expandable stent, then support be dwindled for carrier and send into inside of human body, arrival can return to original shape behind the precalculated position.
Polyester fiber film barrier layer 4 linings that this utility model provides are gone into the centre of the support 3 of above-mentioned stopper, play the effect that stops blood flow; Transmission connects the end that control part 1 is positioned at above-mentioned stopper support 3, and its effect is fixing nitinol alloy wire and provide and control push rod and rotate.
The profile of the stopper support 3 that this utility model provides is conical or is the bottle stopper shape; The area of aorta end and pulmonary artery end varies in size, and the diameter of aorta end 5 is for can be 5-20mm, and the diameter of pulmonary artery 2 is than aorta end 5 little 2-4mm, and intermediary diameter is 3-18mm, and its total length can reach 5-9mm.But the shutoff internal diameter is the patent ductus arteriosus of 2-14mm.
The aorta end 5 of the stopper support 3 that this utility model provides is the disk of center to lower recess, and it is that transmission connects control part 1 that pulmonary artery end 2 has fixed screw.
As shown in Figure 2, the aorta end face 5 of the stopper support 3 that provides of this utility model is smooth discoid.As shown in Figure 4, the pulmonary artery end 5 of this utility model stopper support 3 have the control support fixed screw, be used for fixing the nitinol alloy wire that weaves stopper and be connected push rod.During use, the rotation of up time thorium direction makes it be connected with push rod, and rotation counterclockwise then is separated with push rod.
The transmission of a kind of stopper support 3 pulmonary artery ends 2 that this utility model provides connects control part 1 and uses the fixing control of medical stainless steel screw, described CARBURIZING FURNACE FOR STAINLESS FASTENER outer end has screw thread can connect push rod, inner hollow, link to each other with above-mentioned nitinol alloy wire, should there be solder joint between described screw and the titanium-nickel wire, but adopting the kneading technology to make, its pulling force is better than existing support by being welded at present greatly, and difficult drop-off; As Fig. 5, shown in Figure 6, the control end of existing stopper adopts solder technology, when passing through maximum pulling-out force 60 Newtonian times, prolong 2.6 millimeters, and the stopper control end that this utility model provides when maximum pulling-out force be 200 Newtonian times, extend 1.2 millimeters, as seen, this utility model adopts the pulling-out force of no solder joint apparently higher than existing stopper with welding.
Simultaneously, as shown in Figure 3, the screw that the transmission of above-mentioned pulmonary artery end face 2 connects control part 1 tilts into the certain angle of support planar base surface, like this, can extremely help tissue in the stopper superficial epitheliumization.In addition, on the aorta end 5 of described stopper support 3, there is a special inclination to go into the certain angle inclined-plane of support planar base surface, like this, can helps tissue equally in the stopper superficial epitheliumization.
As Fig. 1, shown in Figure 3, the two ends of the stopper support that this utility model provides and the middle polyester of high density fibrous membrane 2 of sewing up work to intercept blood flow.
The stopper that this utility model provides adopts novel Nitinol to constitute, so have good shape memory function, is linear when being subjected to the external force tractive, and external force is recovered original-shape after removing immediately.Therefore can carry by the sheath pipe of 6F～8F.
In clinical practice, determine that according to X line angiography the anatomic form of patent ductus arteriosus reaches the narrowest footpath, select the size of stopper according to the narrowest footpath of ductus arteriosus.Is patient about 14mm as mid diameter for the 18mm stopper can be used for treating the PDA internal diameter; Mid diameter is patient about 8mm for the 12mm stopper is used for the treatment of the PDA internal diameter; Mid diameter is patient about 2mm for the 4mm stopper is used for the treatment of the PDA internal diameter.
This utility model can be according to the diameter of stopper mid portion, is at interval with 2mm, forms the stopper of plurality of specifications such as 4～18mm, can adapt to the shutoff of the patent ductus arteriosus of different sizes.
Claims (5)
1, a kind of novel patend ductus arteriosus occluder, it is characterized in that this stopper has the braiding of Memorability metal alloy wires by one and forms, it mainly comprises: support (3) the intermediary polyester fiber film barrier layer (4) that the support of superelastic nickel titanium alloy wire (3), lining are gone into above-mentioned stopper is connected control part (1) with a transmission that is fixed on above-mentioned stopper support (3) one ends.
2, a kind of novel patend ductus arteriosus occluder according to claim 1, it is characterized in that described support (3) is conical or is the bottle stopper shape, at the diameter of the aorta end (5) of described support (3) for can be 5-20mm, the diameter of pulmonary artery (2) is than the little 2-4mm of aorta end (5), intermediary diameter is 3-18mm, and its total length can reach 5-9mm.
3, a kind of novel patend ductus arteriosus occluder according to claim 1, the pulmonary artery end (2) that it is characterized in that described stopper support (3) is center discoid to lower recess, and it is that transmission connects control part (1) that aorta end (5) has fixed screw.
4, a kind of novel patend ductus arteriosus occluder according to claim 1 is characterized in that described transmission connects control part (1) and uses the fixing control of medical stainless steel nut, should not have solder joint between screw and the titanium-nickel wire, but adopts the kneading technology to make.
5, a kind of novel patend ductus arteriosus occluder according to claim 1 is characterized in that described transmission connects the certain angle of the oblique support planar base surface of control part (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274499 CN2518475Y (en) | 2001-12-27 | 2001-12-27 | Patent arterial duct blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274499 CN2518475Y (en) | 2001-12-27 | 2001-12-27 | Patent arterial duct blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2518475Y true CN2518475Y (en) | 2002-10-30 |
Family
ID=33679166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274499 Expired - Lifetime CN2518475Y (en) | 2001-12-27 | 2001-12-27 | Patent arterial duct blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2518475Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400012C (en) * | 2004-08-19 | 2008-07-09 | 先健科技(深圳)有限公司 | Biological ceramic stopper and method for manufacturing the same |
-
2001
- 2001-12-27 CN CN 01274499 patent/CN2518475Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400012C (en) * | 2004-08-19 | 2008-07-09 | 先健科技(深圳)有限公司 | Biological ceramic stopper and method for manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090109 Address after: 199, Tongji Road, Shanghai, Baoshan District, China: 200940 Patentee after: Shanghai Marmem Material Co., Ltd. Address before: 199, Tongji Road, Shanghai, Baoshan District, China: 200940 Co-patentee before: Qin Yongwen Patentee before: Gong Shan Shi |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI FORM MEMORY ALLOY MATERIALS CO., LTD. Free format text: FORMER OWNER: GONG SHANSHI Effective date: 20090109 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111227 Granted publication date: 20021030 |