CN108186159A - A kind of convertible inferior vena cava thrombosis filter - Google Patents
A kind of convertible inferior vena cava thrombosis filter Download PDFInfo
- Publication number
- CN108186159A CN108186159A CN201810174059.0A CN201810174059A CN108186159A CN 108186159 A CN108186159 A CN 108186159A CN 201810174059 A CN201810174059 A CN 201810174059A CN 108186159 A CN108186159 A CN 108186159A
- Authority
- CN
- China
- Prior art keywords
- vena cava
- inferior vena
- intravascular stent
- support ring
- convertible
- 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
Links
- 206010047195 Vena cava thrombosis Diseases 0.000 title claims abstract description 29
- 210000001631 vena cava inferior Anatomy 0.000 title claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 238000009954 braiding Methods 0.000 claims description 3
- 208000007536 Thrombosis Diseases 0.000 abstract description 10
- 239000003814 drug Substances 0.000 abstract description 4
- 230000001464 adherent effect Effects 0.000 abstract description 3
- 229940079593 drug Drugs 0.000 abstract description 3
- 210000003462 vein Anatomy 0.000 description 5
- 238000002513 implantation Methods 0.000 description 4
- 210000003141 lower extremity Anatomy 0.000 description 3
- 206010047249 Venous thrombosis Diseases 0.000 description 2
- 230000004054 inflammatory process Effects 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 206010051055 Deep vein thrombosis Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 208000031856 Haemosiderosis Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002497 edematous effect Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000001926 lymphatic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 201000005060 thrombophlebitis Diseases 0.000 description 1
- 231100000397 ulcer Toxicity 0.000 description 1
- 210000002073 venous valve Anatomy 0.000 description 1
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
Abstract
The invention discloses a kind of convertible inferior vena cava thrombosis filters, including intravascular stent, the cross section of the intravascular stent is circular configuration, the both sides of the intravascular stent are both provided with support ring, the side of the support ring is both provided with the supporting rack of U-shaped structure, and the opening of supporting rack is welded with same connecting rod, and a middle side part of connecting rod offers straight slot towards support ring between the open interior and support ring of support frame as described above.The spindle-type structure thrombus filter that the present invention is formed in the inside of intravascular stent by being equipped with curved rod, so that intravascular stent is combined with inferior vena cava thrombosis filter, reduce treatment cost, allow inferior vena cava thrombosis filter that can be converted to intravascular stent in four to six weeks and adherent after being implanted into, permanent filter is avoided to need lifelong medication, also avoiding temporary filter needs to take out and increase expense.
Description
Technical field
The present invention relates to medical apparatus technical field more particularly to a kind of convertible inferior vena cava thrombosis filters.
Background technology
There are two types of Venous Thrombosis：First, thrombophlebitis, it refers to inflammation to be starting and thrombosis is secondary；
The other is venous thronbosis, it refers to find as the inflammatory process of wall of vein is secondary, with lower limb headed by thrombosis
Deep vain thrombosis is most common.Not only incidence is high, but also is also easy to produce mortality pulmonary embolism, significant, lower limb by the elderly
Larger vein is formed after thrombus, it is difficult to be dissolved and be dredged again naturally and cause thrombus flesh and vein obliteration, venous valve
Insufficiency often occurs even if dredge again for place, and deep vein thrombosis usually invades Perforator Vein, and above-mentioned three kinds of situations cause
Lower limb capillary and veinlet expansion, tube wall permeability changes, red blood cell effusion, Lymphatic Circulation are obstructed, subcutaneous tissue oedema,
Plump, fibrosis, skin hemosiderosis, leather sample become, and eczema and ulcer occurs.This state is comprehensive after thrombus
Sign, symptom are entire suffering limb edematous swelling, sense of heaviness or even pain, stand for a long time or sitting makes the symptoms worse, mesh
Preceding inferior vena cava thrombosis relies primarily on inferior vena cava thrombosis filter and is treated, but permanent inferior vena cava thrombosis filter needs
It to take medicine all the life, provisional inferior vena cava thrombosis filter needs to take out and increase expense.
Invention content
Technical problems based on background technology, the present invention propose a kind of convertible inferior vena cava thrombosis filter.
A kind of convertible inferior vena cava thrombosis filter proposed by the present invention, including intravascular stent, the intravascular stent
Cross section is circular configuration, and the both sides of the intravascular stent are both provided with support ring, and the side of the support ring is both provided with U-shaped
The supporting rack of structure, and the opening of supporting rack is welded with towards support ring between the open interior and support ring of support frame as described above
Same connecting rod, and a middle side part of connecting rod offers straight slot, the junction surface of the connecting rod and supporting rack opens up
There are lock slots, and lock slots are connected with straight slot, the junction of the support ring and connecting rod is provided with curved rod, the curved rod
The other end be welded with link block, and the link block positioned at support ring the same side is mutually bonded and forms spindle-type structure, spindle
The top of type structure is provided with locking cap.
Preferably, the locking cap is made of degradable macromolecule composite material, and link block is coated on the interior of locking cap
Portion.
Preferably, the side inner wall center of the lock slots offers slot, and the side of link block is welded with inserting column, inserts
Slot matches with inserting column, and link block matches with lock slots.
Preferably, the intravascular stent is made, and the surface of intravascular stent is provided with for memory alloy metal wire braiding
The hollow hole of range distribution.
Preferably, the curved rod is made of memory alloy metal wire, and the quantity of curved rod is eight to ten six, and eight arrive
16 curved rods are equidistantly distributed in the both sides of two support rings.
Preferably, the length of the curved rod and the length of straight slot match, and the size of curved rod is less than the interior of straight slot
Portion space.
Having the beneficial effect that in the present invention：
1. convertible inferior vena cava thrombosis filter proposed by the present invention, is provided with intravascular stent, leads in the inside of intravascular stent
Cross the spindle-type structure thrombus filter for being equipped with curved rod composition so that intravascular stent and inferior vena cava thrombosis filter knot
It closes, reduces treatment cost.
2. convertible inferior vena cava thrombosis filter proposed by the present invention, is provided with locking cap, locking cap is degradable height
Molecular composite material is made, and after the implantation of inferior vena cava thrombosis filter, locking cap is melted so that link block detaches, note
Recall curved rod made of alloying metal silk and carry out restorative deformation so that spindle-type structure disappears, and avoids influencing blood circulation.
3. convertible inferior vena cava thrombosis filter proposed by the present invention, is provided with lock slots and straight slot, curved rod into
After the restorative deformation of row, curved rod and link block are retracted to the inside of straight slot and straight slot respectively so that inferior vena cava thrombosis filters
Intravascular stent can be converted to after device implantation in four to six weeks and adherent, and permanent filter is avoided to need lifelong medication, is also avoided
Temporary filter needs to take out and increase expense.
Description of the drawings
Fig. 1 is a kind of structure diagram of convertible inferior vena cava thrombosis filter proposed by the present invention；
Fig. 2 is a kind of side structure schematic view of convertible inferior vena cava thrombosis filter proposed by the present invention.
In figure：1 lock slots, 2 straight slots, 3 link blocks, 4 connecting rods, 5 locking caps, 6 supporting racks, 7 support rings, 8 intravascular stents,
9 hollow holes, 10 slots, 11 curved rods.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.
With reference to Fig. 1-2, a kind of convertible inferior vena cava thrombosis filter, including intravascular stent 8, intravascular stent 8 it is transversal
Face is circular configuration, and the both sides of intravascular stent 8 are both provided with support ring 7, and the side of support ring 7 is both provided with the branch of U-shaped structure
Support 6, and the opening of supporting rack 6 is welded with same company towards support ring 7 between the open interior of supporting rack 6 and support ring 7
Extension bar 4, and a middle side part of connecting rod 4 offers straight slot 2, connecting rod 4 and the junction surface of supporting rack 6 offer lock slots
1, and lock slots 1 are connected with straight slot 2, the junction of support ring 7 and connecting rod 4 is provided with curved rod 11, curved rod 11 it is another
End is welded with link block 3, and the link block 3 positioned at 7 the same side of support ring is mutually bonded and forms spindle-type structure, spindle-type knot
The top of structure is provided with locking cap 5.
In the present invention, locking cap 5 is made of degradable macromolecule composite material, and link block 3 is coated on the interior of locking cap 5
Portion, the side inner wall center of lock slots 1 offer slot 10, and the side of link block 3 is welded with inserting column, slot 10 and inserting column phase
Matching, link block 3 match with lock slots 1, and intravascular stent 8 is made, and the table of intravascular stent 8 for memory alloy metal wire braiding
Face is provided with the hollow hole 9 equidistantly distributed, and curved rod 11 is made of memory alloy metal wire, and the quantity of curved rod 11 is eight
To 16, eight to ten six curved rods 11 are equidistantly distributed in the both sides of two support rings 7, the length and straight slot of curved rod 11
2 length matches, and the size of curved rod 11 is less than the inner space of straight slot 2.
The spindle-type structure thrombus filter formed in the inside of intravascular stent 8 by being equipped with curved rod 11 so that blood
Pipe holder 8 is combined with inferior vena cava thrombosis filter, and locking cap 5 is made of degradable macromolecule composite material, in inferior caval vein
After thrombus filter implantation, locking cap 5 is melted so that link block 3 detaches, curved rod 11 made of memory alloy metal wire
Carrying out restorative deformation so that spindle-type structure disappears, after curved rod 11 carries out restorative deformation, curved rod 11 and link block
3 are retracted to the inside of straight slot 2 and straight slot 2 respectively so that can turn in four to six weeks after the implantation of inferior vena cava thrombosis filter
It is changed to intravascular stent and adherent, permanent filter is avoided to need lifelong medication, also avoiding temporary filter needs to take out and increase expense
With.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of convertible inferior vena cava thrombosis filter, including intravascular stent（8）, which is characterized in that the intravascular stent（8）
Cross section for circular configuration, the intravascular stent（8）Both sides be both provided with support ring（7）, the support ring（7）Side
It is both provided with the supporting rack of U-shaped structure（6）, and supporting rack（6）Opening towards support ring（7）, support frame as described above（6）Opening
Internal and support ring（7）Between be welded with same connecting rod（4）, and connecting rod（4）A middle side part offer straight slot（2）,
The connecting rod（4）With supporting rack（6）Junction surface offer lock slots（1）, and lock slots（1）With straight slot（2）Connection,
The support ring（7）With connecting rod（4）Junction be provided with curved rod（11）, the curved rod（11）The other end weld
There is link block（3）, and positioned at support ring（7）The link block of the same side（3）It is mutually bonded and forms spindle-type structure, spindle-type structure
Top be provided with locking cap（5）.
A kind of 2. convertible inferior vena cava thrombosis filter according to claim 1, which is characterized in that the locking cap
（5）It is made of degradable macromolecule composite material, and link block（3）It is coated on locking cap（5）Inside.
A kind of 3. convertible inferior vena cava thrombosis filter according to claim 1, which is characterized in that the lock slots
（1）Side inner wall center offer slot（10）, and link block（3）Side be welded with inserting column, slot（10）With inserting column phase
Matching, link block（3）With lock slots（1）Match.
A kind of 4. convertible inferior vena cava thrombosis filter according to claim 2, which is characterized in that the intravascular stent
（8）It is made, and intravascular stent for memory alloy metal wire braiding（8）Surface be provided with the hollow hole equidistantly distributed（9）.
A kind of 5. convertible inferior vena cava thrombosis filter according to claim 1, which is characterized in that the curved rod
（11）It is made of memory alloy metal wire, and curved rod（11）Quantity for eight to ten six, eight to ten six curved rods（11）
It equidistantly distributes in two support rings（7）Both sides.
A kind of 6. convertible inferior vena cava thrombosis filter according to claim 1, which is characterized in that the curved rod
（11）Length and straight slot（2）Length match, and curved rod（11）Size be less than straight slot（2）Inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174059.0A CN108186159A (en) | 2018-03-02 | 2018-03-02 | A kind of convertible inferior vena cava thrombosis filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174059.0A CN108186159A (en) | 2018-03-02 | 2018-03-02 | A kind of convertible inferior vena cava thrombosis filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108186159A true CN108186159A (en) | 2018-06-22 |
Family
ID=62594452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810174059.0A Pending CN108186159A (en) | 2018-03-02 | 2018-03-02 | A kind of convertible inferior vena cava thrombosis filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108186159A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205433997U (en) * | 2015-12-24 | 2016-08-10 | 上海形状记忆合金材料有限公司 | Die cavity vein filter of can changeing |
| CN107115160A (en) * | 2017-04-28 | 2017-09-01 | 吴龙 | Dissection of aorta stent |
-
2018
- 2018-03-02 CN CN201810174059.0A patent/CN108186159A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205433997U (en) * | 2015-12-24 | 2016-08-10 | 上海形状记忆合金材料有限公司 | Die cavity vein filter of can changeing |
| CN107115160A (en) * | 2017-04-28 | 2017-09-01 | 吴龙 | Dissection of aorta stent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |