CN207562016U - It is a kind of can self centering recyclable Caval vein thrombus filter - Google Patents
It is a kind of can self centering recyclable Caval vein thrombus filter Download PDFInfo
- Publication number
- CN207562016U CN207562016U CN201721877820.4U CN201721877820U CN207562016U CN 207562016 U CN207562016 U CN 207562016U CN 201721877820 U CN201721877820 U CN 201721877820U CN 207562016 U CN207562016 U CN 207562016U
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- China
- Prior art keywords
- meeting point
- filter
- proximal end
- distal end
- self centering
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- Withdrawn - After Issue
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Abstract
The utility model is related to a kind of recyclable Caval vein thrombus filter of self centering, including elastic metal rack and stent both ends meeting point.Remote branch of a clan frame end on the meeting point of stent both ends includes the hook groove available for recycling vena cava filter, during recycling can both sides pull filter simultaneously, filter diameter is made to become smaller, safe escape vascular wall.Respectively there are one the raised points that diameter becomes larger for the nearly meeting point position in elastic metal rack both ends, can reduce stent and vascular wall contact area, smoothly be taken out after being temporarily implanted convenient for filter.Include blood vessel on the boss of elastic metal rack one end simultaneously and fix hangnail, it is therefore an objective to device be allowed to fix in the blood vessels, be not subjected to displacement under blood flow impact.Elastic metal rack both ends are concave structure, and stent both ends meeting point is arranged in groove, and avoiding device is temporarily implanted after-poppet both ends meeting point and adhesion is contacted with vascular wall, reduce and take out difficulty.
Description
Technical field
The utility model is related to a kind of medical instrument, swim thrombus in specifically a kind of recyclable vena cave system, prevention
The Caval vein thrombus filter that pulmonary embolism, pulmonary infarction occur.
Background technology
Pulmonary embolism (abbreviation pulmonary embolism Pulmonary Embolism, PE) is due to around deep vein thrombosis or the right heart
The thrombus breaks loose of chamber enters pulmonary circulation, blocks pulmonary artery or its branch, so cause it is a series of using pulmonary circulatory function obstacle as
Main clinical pathology physiological change, it is serious to cause sudden death.Research shows that the embolus that PE occurs is caused to be mainly derived from limb
The thrombus that body Deep venou or pelvic veins come off accounts for the 60%-90% in embolus source.It is possible thereby to renal vein open horizontal with
A thrombus filter is placed at lower place, i.e. inferior caval vein, is intercepted the free embolus in blood, can effectively be prevented pulmonary embolism PE
Generation, at present the technology be just constantly applied to clinical treatment and achieving good effect.
The thrombus filter occurred currently on the market, mostly unidirectional drawing, thrombus is insufficient to allow during drawing is taken out
The diameter of filter becomes sufficiently small, therefore damages vascular wall.Furthermore the thrombus filter elastic metal rack occurred in the market
Both ends are linear, and for the product in Clinical practice, metallic support and vascular wall contact area are big, after being temporarily implanted easily and blood
Tube wall sticks together, and increases filter and takes out difficulty, and stent both ends meeting point is raised in metallic support, causes to be implanted into after-poppet
The meeting point of both ends protrusion contacts adhesion with vascular wall, and the similary filter that increases takes out difficulty.
Invention content
In order to provide the product for not easily causing damage vascular wall during taking out, and reduce since device and vascular wall connect
It touches adhesion and causes the increased risk of operation difficulty, the technical solution of the utility model is as follows：A kind of self centering is provided
Recyclable Caval vein thrombus filter, include elastic metal rack and stent both ends meeting point.On the meeting point of stent both ends
Remote branch of a clan frame end includes the hook groove available for recycling vena cava filter, during recycling can both sides pull filter simultaneously, be that filter is straight
Diameter becomes smaller, safe escape vascular wall.Respectively there are one the raised points that diameter becomes larger, energy for the nearly meeting point position in elastic metal rack both ends
Stent and vascular wall contact area are enough reduced, is smoothly taken out after being temporarily implanted convenient for filter.While elastic metal rack one end
Include blood vessel on boss and fix hangnail, it is therefore an objective to device be allowed to fix in the blood vessels, be not subjected to displacement under blood flow impact.
Elastic metal rack both ends are concave structure, and stent both ends meeting point is arranged in groove, and avoiding device is temporarily implanted
After-poppet both ends meeting point contacts adhesion with vascular wall, reduces and takes out difficulty.
The utility model is made of elastic metal rack and stent both ends meeting point.Elastic metal rack closely collects including both ends
Chalaza position is respectively there are one the protrusion that diameter becomes larger, while include blood vessel on the boss of elastic metal rack one end and fix
Hangnail.Include the internal thread being connected available for the hook groove of recovery filter with for conveying device on the meeting point of stent both ends.
Elastic metal rack by 0.1-0.3mm nitinol alloy wires through Laser cutting, be heat-treated, have superpower bullet
Property memory function structure.
Elastic metal rack front end nut and the nut clockwise that hook end nut is identical size, by Nitinol material
Material is process.
Elastic metal rack both ends are concave structure, and stent both ends meeting point is arranged in groove, avoiding device
Position is unstable so that stent both ends meeting point contacts adhesion with vascular wall.
Blood vessel is fixed hangnail and is strutted automatically when product expand, is opened into about 45 degree of angle braces, during product contraction automatically and stent
Body is integrally combined, and can be with repeated multiple times folding and unfolding.
Recycling hook by laser cutting forms hook groove, and convenient for arresting ring crawl, conducive to Product recycling when is not easily to fall off.
Respectively there are one the protrusions that diameter becomes larger for the nearly meeting point position in elastic metal rack both ends, are point contact with vascular wall.
Remote branch of a clan frame end on the meeting point of metallic support both ends includes the hook groove available for recycling vena cava filter, recycling
When can both sides pull thrombus filter simultaneously.
Remote branch of a clan frame end on the meeting point of the utility model metallic support both ends includes available for recycling vena cava filter
Hook groove, during recycling can both sides pull thrombus filter simultaneously, and have the internal thread being connected with conveying device, effectively improve dress
Put probability of recycling success.The nearly meeting point position in elastic metal rack both ends respectively there are one the protrusion that diameter becomes larger, can reduce stent
With vascular wall contact area, smoothly taken out after being temporarily implanted convenient for filter.Simultaneously on the boss of elastic metal rack one end
Include blood vessel and fix hangnail, it is therefore an objective to device be allowed to fix in the blood vessels, be not subjected to displacement under blood flow impact.Elastic metallic branch
Frame both ends are concave structure, and stent both ends meeting point is arranged in groove, and avoiding device is temporarily implanted after-poppet both ends
Meeting point contacts adhesion with vascular wall and causes the damage to vascular tissue, reduces and takes out difficulty.
Description of the drawings
Fig. 1 is the utility model product overall structure diagram.
Fig. 2 is the utility model product overlooking the structure diagram.
Fig. 3 is the utility model product stent meeting point sectional view.
Fig. 4 is the utility model product stent meeting point vertical view.
Fig. 5 is the structure diagram that the utility model product thrombus filter is connected with conveying device.
Structure diagram when Fig. 6 is the utility model product rounding state.
Specific embodiment
Below according to attached drawing is illustrated, the utility model is described in further detail.
The utility model as shown in Figure 1 for it is a kind of can self centering recyclable Caval vein thrombus filter, closed by NiTi
The elastic metal rack (1) of spun gold braiding and mount proximal end meeting point (2), distal end meeting point (3) composition.Mount proximal end set
Point (2), distal end meeting point (3) position are respectively there are one the raised points (12) that diameter becomes larger, while proximal end meeting point (2) one end is convex
Include blood vessel in starting point (12) and fix hangnail (11).Mount proximal end meeting point (2) is comprising for recycling the proximal end hook groove of filter
(21) internal thread (22) being connected with for conveying device (4), distal end meeting point (3) are comprising for recycling the distal end of filter
The internal thread (32) that hook groove (31) is connected with for conveying device (4).
The utility model feature is mount proximal end meeting point (2) equipped with internal thread (22), distal end meeting point (3) equipped with interior
Screw thread (32) pushes away Shi Keyu being taken to be equipped with externally threaded conveying wirerope (4) rotate clockwise and be connected.Mount proximal end meeting point (2),
Distal end meeting point (3) position respectively there are one the raised points (12) that diameter becomes larger, can reduce elastic metal rack (1) and vascular wall
Contact area, while include blood vessel in the raised points (12) of proximal end meeting point (2) one end and fix hangnail (11), it is therefore an objective to it allows
Device is fixed in the blood vessels, is not subjected to displacement under blood flow impact.Elastic metal rack (1) both ends are concave structure, branch
Frame proximal end meeting point (2), distal end meeting point (3) are respectively positioned in groove, and avoiding device is temporarily implanted after-poppet proximal end meeting point
(2), distal end meeting point (3) contact adhesion with vascular wall and cause the damage to vascular tissue.
Elastic metal rack (1) described in the utility model is with mount proximal end meeting point (2), distal end meeting point (3) by NiTi
B alloy wire is formed through laser one cutting processing.Blood vessel is fixed hangnail (11) and is integrally cut for laser, and one cuts apart,
One is integrally connected with elastic metal rack (1).
The foregoing is merely the more typical example of the utility model, it is not used in that limit this example novel, it is all in the utility model
On the basis of improve and extension example be within the protection scope of the utility model.
Claims (8)
1. it is a kind of can self centering recyclable Caval vein thrombus filter, including elastic metal rack (1) and mount proximal end collection
Chalaza (2), distal end meeting point (3), it is characterised in that its described mount proximal end meeting point (2) includes the proximal end for recycling filter
Hook groove (21), distal end meeting point (3) comprising for recycling the distal end hook groove (31) of filter, the proximal end meeting point (2), distal end
The raised points (12) that meeting point (3) position respectively becomes larger there are one diameter are included in one end raised points (12) of proximal end meeting point (2)
There is blood vessel to fix hangnail (11).
2. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that it is described
Elastic metal rack (1) both ends are concave structure, and the mount proximal end meeting point (2), distal end meeting point (3) are respectively positioned on recessed
In slot.
3. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that stent
Proximal end meeting point (2) is equipped with internal thread (22), distal end meeting point (3) equipped with internal thread (32), convenient and filter conveying device (4)
Wirerope external screw thread connection.
4. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that elasticity
Metallic support (1) and mount proximal end meeting point (2), distal end meeting point (3) are processed into for same root elastic metallic yarn, intermediate nothing
Any connection point.
5. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that device
During folding and unfolding, mount proximal end meeting point (2) and distal end meeting point (3) are always in the center of thrombus filter.
6. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that proximal end
Respectively there are one the raised points (12) that diameter becomes larger for meeting point (2), distal end meeting point (3) position.
7. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that elasticity
The raised points (12) that diameter becomes larger on metallic support (1) are symmetrical structure.
8. according to claim 1 it is a kind of can self centering recyclable Caval vein thrombus filter, it is characterised in that proximal end
There is blood vessel to fix hangnail (11) in one end raised points (12) in meeting point (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877820.4U CN207562016U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can self centering recyclable Caval vein thrombus filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877820.4U CN207562016U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can self centering recyclable Caval vein thrombus filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207562016U true CN207562016U (en) | 2018-07-03 |
Family
ID=62686207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721877820.4U Withdrawn - After Issue CN207562016U (en) | 2017-12-28 | 2017-12-28 | It is a kind of can self centering recyclable Caval vein thrombus filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207562016U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248006A (en) * | 2018-09-25 | 2019-01-22 | 上海形状记忆合金材料有限公司 | A kind of vena cava filter |
| CN109700582A (en) * | 2019-01-03 | 2019-05-03 | 赵学 | A kind of intravascular stent unloading device and the recyclable intravascular stent using the unloading device |
| WO2020063793A1 (en) * | 2018-09-27 | 2020-04-02 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing system and pacemaker fixing device |
| US11786388B2 (en) | 2021-03-12 | 2023-10-17 | Cook Medical Technologies Llc | Endovascular delivery systems with radial orientation mechanisms |
-
2017
- 2017-12-28 CN CN201721877820.4U patent/CN207562016U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248006A (en) * | 2018-09-25 | 2019-01-22 | 上海形状记忆合金材料有限公司 | A kind of vena cava filter |
| WO2020063793A1 (en) * | 2018-09-27 | 2020-04-02 | 创领心律管理医疗器械（上海）有限公司 | Cardiac pacing system and pacemaker fixing device |
| CN109700582A (en) * | 2019-01-03 | 2019-05-03 | 赵学 | A kind of intravascular stent unloading device and the recyclable intravascular stent using the unloading device |
| US11786388B2 (en) | 2021-03-12 | 2023-10-17 | Cook Medical Technologies Llc | Endovascular delivery systems with radial orientation mechanisms |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200333 Room 202, No. 2, Lane 2888, Qilianshan South Road, Putuo District, Shanghai Patentee after: Shanghai Pushi Medical Equipment Co., Ltd Address before: 201807, A, building 2, block 1355, Chengbei Road, Shanghai, Jiading District, Patentee before: Shanghai Push Medical Device Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180703 Effective date of abandoning: 20201130 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180703 Effective date of abandoning: 20201130 |