CN105476729A - Vena cava filter nickel-titanium stent - Google Patents
Vena cava filter nickel-titanium stent Download PDFInfo
- Publication number
- CN105476729A CN105476729A CN201610010533.7A CN201610010533A CN105476729A CN 105476729 A CN105476729 A CN 105476729A CN 201610010533 A CN201610010533 A CN 201610010533A CN 105476729 A CN105476729 A CN 105476729A
- Authority
- CN
- China
- Prior art keywords
- vena cava
- drainage screen
- cava filter
- filter
- filter screen
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/01—Filters implantable into blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/01—Filters implantable into blood vessels
- A61F2002/016—Filters implantable into blood vessels made from wire-like elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
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- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a vena cava filter nickel-titanium stent. The vena cava filter nickel-titanium stent comprises a filter screen and a beam concentration end, the filter screen is arranged at one end of the beam concentration end and can be unfolded into an umbrella shape or folded into a bundle shape, and the other end of the beam concentration end is provided with a nut which is used for being connected with an external recoverer. The filter screen comprises single wires which are correspondingly connected in an erected mode and are of a net structure, multiple positioning main rods and multiple positioning subsidiary rods, when the filter screen is in the unfolded state, the positioning main rods are arranged in a circumferentially-surrounding mode for forming a tubular main body of the filter screen, and a screen opening of the filter screen is defined by the positioning subsidiary rods. The vena cava filter nickel-titanium stent is novel in design structure, small in length, remarkable in thrombus collection effect, reliable in fixation and simple in recovery operation, the stent can be fixed to the inner walls of blood vessels easily, and no extra damage can be caused to the inner walls of the blood vessels in the filter recovery process.
Description
Technical field
The present invention relates to vena cava filter support, be more particularly that a kind of niti-shaped memorial alloy that uses is processed, the vena cava filter of pulmonary embolism can be prevented to design, belong to technical field of medical instruments.
Background technology
Pulmonary embolism (PE) refers to that endogenous or exogenous embolus blocking pulmonary artery or its branch cause the clinical relation physiology syndrome of disturbance of pulmonary circulation.Wherein main, modal kind is pulmonary thromboembolism (PTE), also comprises the type that other are the cause of disease with lung thrombotic plugs thromboembolism, as fat embolism, amniotic embolism, air embolism, foreign body thromboembolism and tumor embolism.Pneumorrhagia is there is or bad the dead claims pulmonary infarction after pulmonary embolism.Originating from pulmonary artery original position person claims pulmonary thrombosis to be formed.
Vena cava filter traditional on market exist insert blood vessel after position move, reclaim difficulty, easily cause blood vessel to damage when reclaiming, collect thrombosis not thoroughly, thrombosis the problem such as to leave over.In the manufacturing, vena cava filter traditional on market adopts double end boundling to design mostly, makes niti-shaped memorial alloy pipe length length, the sizing difficulty partially needed for producing, causes production cost too high.
Summary of the invention
Technical problem to be solved by this invention is the vena cava filter nickel titanium stents providing a kind of simplicity of design for above-mentioned prior art.This vena cava filter has project organization novelty, collects thrombosis Be very effective, easily on blood vessel, does not cause the features such as additional injuries, production cost are low when fixing (position does not offset), recovery to blood vessel.
The present invention's adopted technical scheme that solves the problem is: a kind of vena cava filter nickel titanium stents, comprise drainage screen and boundling termination, drainage screen is arranged on one end of boundling termination, described drainage screen can be launched into umbrella or be collapsed into pencil, and the other end of described boundling termination is provided with nut for being connected with outside recover.
Particularly, what described drainage screen comprised corresponding bridge joint has cancellated monofilament, some location mobile jib and some locating pair bars, under the state that drainage screen launches, described some location mobile jib circumferential hoop is around the tubular body forming drainage screen, and described some locating pair bars surround the network interface of drainage screen.
Preferably, described locating pair bar is provided with agnail.
Compared with prior art, the invention has the advantages that:
1) drainage screen is under release deployed condition, forms network structure, and this network structure is netted more more intensive than traditional filter in the market, collects thrombosis better effects if.
2) main part of drainage screen is hollow tubular, by some around the network interface that mobile jib is formed, some secondary bars surround into drainage screen, mobile jib and secondary bar all fit tightly with blood vessel wall, guarantee that location is reliable.
3) relevant position of drainage screen network interface and secondary bar is provided with some agnails, makes this filter to be firmly anchored on blood vessel, also can not come off under the washing away of blood flow.
4) when reclaiming filter, bridle catcher is screwed in the nut of boundling termination, coordinates sheath pipe this filter can be drawn in and be recovered in sheath pipe.In the income sheath pipe that agnail can be obedient in removal process, and can not snap on sheath tube wall, the recovery of this filter is easily operated, and not easily injured blood vessel inwall.
5) nut of this filter adopts outer concordant with the external diameter of boundling end tubing, and screw thread can select M0.8 ~ M1.4 scope.When carrying out filter reclaimer operation, use major thread that bridle catcher can be made to be connected with filter more easy.
6) length of filter of the present invention only has the half of traditional filter on market to 2/3rds, can save the use amount of the niti-shaped memorial alloy tubing of 33% ~ 50%, and then reduces production cost.
7) this filter is owing to adopting the design of single head boundling, and the shaping process of manufacturing process is more easily operated, and during sizing expansion, screw mandrel is not easy fracture, improves lumber recovery, reduces production cost.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view in the embodiment of the present invention under vena cava filter nickel titanium stents deployed condition;
Fig. 2 is the front view of structure shown in Fig. 1;
Fig. 3 is the top view of structure shown in Fig. 1;
Fig. 4 is the cutaway view Amplified image of vena cava filter nickel titanium stents boundling termination in the embodiment of the present invention;
Fig. 5 is the schematic diagram in the embodiment of the present invention under vena cava filter nickel titanium stents rounding state.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1 to 5, the vena cava filter support in the present embodiment manufactures after carrying out the techniques such as laser engraving, sandblasting, cleaning, heat treatment shaping, laser weld, electrochemical polish successively by niti-shaped memorial alloy tubing and forms.Comprise drainage screen and boundling termination 1.Drainage screen is arranged on one end of boundling termination 1, drainage screen can be launched into umbrella or be collapsed into pencil, 3, eight, the cancellated monofilament that has that drainage screen comprises corresponding bridge joint locates mobile jib 4 and ten six roots of sensation locating pair bars 5, under the state that drainage screen launches, eight location mobile jib 4 circumferential hoops are around the tubular body forming drainage screen, and ten six roots of sensation locating pair bars 5 surround the network interface of drainage screen and network interface are evenly provided with eight agnails 6.
The other end of boundling termination is provided with nut 2, and for being connected with outside recover, the outer of nut 2 is concordant with the external diameter of boundling termination 1, and screw thread can select the major thread of M0.8 ~ M1.4 scope, docks with bridle catcher to facilitate.
The vena cava filter of said structure, project organization is novel, length is less, collect thrombosis Be very effective, be easy to fixing on blood vessel and fixing reliable, filter can not cause additional injuries, reclaimer operation simple to blood vessel when reclaiming.
In addition to the implementation, the present invention also includes other embodiments, the technical scheme that all employing equivalents or equivalent substitute mode are formed, within the protection domain that all should fall into the claims in the present invention.
Claims (5)
1. a vena cava filter nickel titanium stents, it is characterized in that: comprise drainage screen and boundling termination, drainage screen is arranged on one end of boundling termination, and described drainage screen can be launched into umbrella or be collapsed into pencil, and the other end of described boundling termination is provided with nut for being connected with outside recover.
2. vena cava filter nickel titanium stents according to claim 1, it is characterized in that: what described drainage screen comprised corresponding bridge joint has cancellated monofilament, some location mobile jib and some locating pair bars, under the state that drainage screen launches, described some location mobile jib circumferential hoop is around the tubular body forming drainage screen, and described some locating pair bars surround the network interface of drainage screen.
3. vena cava filter nickel titanium stents according to claim 2, is characterized in that: described locating pair bar is provided with agnail.
4. vena cava filter nickel titanium stents according to claim 1, is characterized in that: the outer of described nut is concordant with the external diameter of boundling termination, and screw thread can select M0.8 ~ M1.4 scope.
5. vena cava filter nickel titanium stents according to claim 1, is characterized in that: described drainage screen and boundling termination adopt niti-shaped memorial alloy to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610010533.7A CN105476729A (en) | 2016-01-08 | 2016-01-08 | Vena cava filter nickel-titanium stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610010533.7A CN105476729A (en) | 2016-01-08 | 2016-01-08 | Vena cava filter nickel-titanium stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105476729A true CN105476729A (en) | 2016-04-13 |
Family
ID=55664255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610010533.7A Pending CN105476729A (en) | 2016-01-08 | 2016-01-08 | Vena cava filter nickel-titanium stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105476729A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105963048A (en) * | 2016-06-15 | 2016-09-28 | 江门市众新思创医疗科技有限公司 | Degradable vena caval filter |
| CN107582213A (en) * | 2017-10-24 | 2018-01-16 | 科塞尔医疗科技（苏州）有限公司 | A kind of preparation method of vena cava filter |
| WO2020062331A1 (en) * | 2018-09-26 | 2020-04-02 | 李雷 | Vena cava embolic filter |
| CN111329619A (en) * | 2020-04-07 | 2020-06-26 | 上海善迪医疗科技有限公司 | Umbrella-shaped recyclable venous thrombus filter |
| WO2020258943A1 (en) * | 2019-06-28 | 2020-12-30 | 上海微创心脉医疗科技股份有限公司 | Filter recovering and protecting device, filter recovering system and method and filtering system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003063732A2 (en) * | 2002-01-25 | 2003-08-07 | Atritech, Inc. | Atrial appendage blood filtration systems |
| CN2640421Y (en) * | 2003-09-23 | 2004-09-15 | 北京有色金属研究总院 | Supporting reclaimable inferior caval vein filter |
| CN202105046U (en) * | 2011-06-08 | 2012-01-11 | 威海维心医疗设备有限公司 | Controlled release vena cava filter |
| CN102824229A (en) * | 2012-09-20 | 2012-12-19 | 上海市第六人民医院 | Removal-free temporary vena cava filter and manufacture method thereof |
| US20130178890A1 (en) * | 2004-01-22 | 2013-07-11 | Rex Medical L.P. | Vein filter |
| CN204909721U (en) * | 2015-06-30 | 2015-12-30 | 先健科技(深圳)有限公司 | Filter |
| CN205307145U (en) * | 2016-01-08 | 2016-06-15 | 江阴法尔胜佩尔新材料科技有限公司 | Vena cave filter nickel titanium support |
-
2016
- 2016-01-08 CN CN201610010533.7A patent/CN105476729A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003063732A2 (en) * | 2002-01-25 | 2003-08-07 | Atritech, Inc. | Atrial appendage blood filtration systems |
| CN2640421Y (en) * | 2003-09-23 | 2004-09-15 | 北京有色金属研究总院 | Supporting reclaimable inferior caval vein filter |
| US20130178890A1 (en) * | 2004-01-22 | 2013-07-11 | Rex Medical L.P. | Vein filter |
| CN202105046U (en) * | 2011-06-08 | 2012-01-11 | 威海维心医疗设备有限公司 | Controlled release vena cava filter |
| CN102824229A (en) * | 2012-09-20 | 2012-12-19 | 上海市第六人民医院 | Removal-free temporary vena cava filter and manufacture method thereof |
| CN204909721U (en) * | 2015-06-30 | 2015-12-30 | 先健科技(深圳)有限公司 | Filter |
| CN205307145U (en) * | 2016-01-08 | 2016-06-15 | 江阴法尔胜佩尔新材料科技有限公司 | Vena cave filter nickel titanium support |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105963048A (en) * | 2016-06-15 | 2016-09-28 | 江门市众新思创医疗科技有限公司 | Degradable vena caval filter |
| CN107582213A (en) * | 2017-10-24 | 2018-01-16 | 科塞尔医疗科技（苏州）有限公司 | A kind of preparation method of vena cava filter |
| WO2020062331A1 (en) * | 2018-09-26 | 2020-04-02 | 李雷 | Vena cava embolic filter |
| WO2020258943A1 (en) * | 2019-06-28 | 2020-12-30 | 上海微创心脉医疗科技股份有限公司 | Filter recovering and protecting device, filter recovering system and method and filtering system |
| CN111329619A (en) * | 2020-04-07 | 2020-06-26 | 上海善迪医疗科技有限公司 | Umbrella-shaped recyclable venous thrombus filter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |