CN108272531A - A kind of ultrashort type bilayer vena cava filter - Google Patents
A kind of ultrashort type bilayer vena cava filter Download PDFInfo
- Publication number
- CN108272531A CN108272531A CN201710129485.8A CN201710129485A CN108272531A CN 108272531 A CN108272531 A CN 108272531A CN 201710129485 A CN201710129485 A CN 201710129485A CN 108272531 A CN108272531 A CN 108272531A
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- CN
- China
- Prior art keywords
- outer layer
- filter screen
- layer supporting
- vena cava
- recycling
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Classifications
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- 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
- A61F2/011—Instruments for their placement or removal
-
- 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
- A61F2002/018—Filters implantable into blood vessels made from tubes or sheets of material, e.g. by etching or laser-cutting
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
-
- 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
- A61F2230/0063—Three-dimensional shapes
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
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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)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to a kind of ultrashort type bilayer vena cava filter, which is made of internal layer filter screen and outer layer supporting network two parts, and outer layer supporting network is made of recycling hook, release attaching nut, outer layer supporting rod, hangnail；Internal layer filter screen is made of diamond shape filter screen and connecting tube.There was only 25~30mm after this product length expansion, the contact area of product and vein blood vessel is significantly reduced, to reduce the hyperplasia area of venous blood tube wall contact site.The product length is ultrashort, and the probability contacted with product head end recycling hook when venous blood tube wall is shunk after implantation becomes smaller, and recycling hook is thus prevented to be covered by vascular wall neointimal tissue proliferation, and causing cannot recovered hook recycling product.
Description
Technical field
The invention patent relates to a kind of cardiovascular system medical instrument, in specifically a kind of recyclable filter chamber venous system
Swim thrombus, prevents pulmonary embolism, the Caval vein thrombus filter that pulmonary infarction occurs.
Background technology
The vena cava filter product design structure occurred at present in the market mainly has umbrella-shaped structure and lantern-shaped structure vein
Filter is distributed between 45mm~70mm after the length expansion of product.Product expansion after structure it is longer to vein blood vessel damage
Area is bigger, and the product with recycling hook, recycling hook is also bigger by the probability of vascular wall endometrial hyperplasia tissue coverage, makes
It is also bigger come the risk recycled that recycling hook is not easily passed through at vena cava filter.
Invention content
After product is implanted to vena cave blood vessel in order to prevent, product recycles the damage of venous blood tube wall and later product
Hook is covered by vascular wall endometrial hyperplasia tissue, and technical solution of the invention is：It is quiet to provide a kind of ultrashort type bilayer chamber
Arteries and veins filter, outer layer play a supportive role, and internal layer plays filtering thrombus.The product length only has 25~30mm upon inflation, significantly
The contact area for reducing product and venous blood tube wall, to reduce the hyperplasia area of venous blood tube wall contact site.Furthermore it produces
Product length is ultrashort, and the probability contacted with product head end recycling hook when venous blood tube wall is shunk after implantation becomes smaller, to anti-non-return
It receives hook to be covered by vascular wall neointimal tissue proliferation, causing cannot recovered hook recycling product.
The present invention is mainly made of internal layer filter screen and outer layer supporting network two parts, and outer layer supporting network is linked up with by recycling, released
Put attaching nut, outer layer supporting rod, hangnail composition；Internal layer filter screen is made of diamond shape filter screen and connecting tube.
Outer layer supporting network recycling hook, outer layer supporting rod, hangnail are formed by Nitinol pipe through laser engraving.
Release attaching nut is process by nickel-titanium alloy material, is linked up with recycling inside recycling hook through laser welding
Group is integral.
The diamond shape filter screen and connecting tube of internal layer filter screen are formed by Nitinol pipe through laser engraving.
Outer layer supporting network and internal layer filter screen are integral through laser welding group.
Outer layer supporting network contains 6 outer layer supporting rods, and 6 outer layer supporting rods link up with phase in 360 degree etc. points of arrangements with recycling
Even, outer layer supporting rod and the recycling hook S-type bending of linkage section, bending rear end are one 3mm~20mm straight-bars, bending section and straight-bar
It is in 15 degree~60 degree angle hangnails that junction, which has 1,.
Each outer layer supporting rod contains a hangnail, and hangnail is consistent with outer layer supporting rod, in 360 degree etc. points of arrangements.
Internal layer filter screen divides arranged adjacent, diamond shape filter screen one and company by 6 360 degree of same size diamond shape filter screens etc.
Take over connected, other end is in freely separating shape.
After this product expansion, the outer diameter of internal layer filter screen is less than the circumference outer diameter that outer layer supporting rod is formed, internal layer filter screen
The empty shape of a circle is formed between outer layer supporting rod, can prevent the contact of internal layer filter screen and venous blood tube wall, and then anti-hemostasis
Tube wall endometrial hyperplasia tissue, which is climbed, covers internal layer filter screen.
The effective benefit of the present invention is only 25~30mm after product expansion, can greatly reduce product and venous blood tube wall
Contact area, to reduce the region area of venous blood vessel wall damage.Furthermore product length is ultrashort, vein blood vessel after implantation
The probability contacted with product head end recycling hook when wall is shunk becomes smaller, to reduce recycling hook by vascular wall endometrial hyperplasia tissue
Covering, causing cannot the recovered probability for linking up with recycling product.
Description of the drawings
Fig. 1 is this example overall structure diagram.
Fig. 2 is this example outer layer supporting network structural schematic diagram.
Fig. 3 is this example internal layer filter screen structure schematic diagram.
Specific implementation mode
Below according to attached drawing is illustrated, the invention will be further described：
The present invention is made of the portions A outer layer supporting network and the portions B internal layer filter screen as described in Figure 1, and AB two forms one through laser welding
Body.
Outer layer supporting network as described in Figure 2 is made of recycling hook 1, release attaching nut 2, hangnail 3, outer layer supporting rod 4；It returns
Hook 1, hangnail 3, outer layer supporting rod 4 is received to be formed through laser engraving by Nitinol pipe.
Release attaching nut 2 is process by nickel-titanium alloy material, is hung with recycling in 1 inside of recycling hook through laser welding
1 group of hook is integral.
Outer layer supporting network contains 6 outer layer supporting rods, 4,6 outer layer supporting rods in 360 degree etc. points of arrangements and recycling hook 1
It is connected.Outer layer supporting rod 4 with recycling hook the S-type bending of 1 linkage section, bending rear end be one 3mm~20mm straight-bars, bending section and
It is in 15 degree~60 degree angle hangnails 3 that straight-bar junction, which has 1,.
Each outer layer supporting rod 4 contains a hangnail 3, and hangnail 3 is consistent with outer layer supporting rod 4, in 360 degree etc. points of arrangements.
Internal layer filter screen as described in Figure 3 is made of connecting tube 5 and diamond shape filter screen 6.
The connecting tube 5 and diamond shape filter screen 6 of internal layer filter screen are formed by Nitinol pipe through laser engraving.
Internal layer filter screen divides arranged adjacent, diamond shape filter screen 6 one by 6 same size diamond shape filter screens 6 with 360 degree etc.
It is connected with connecting tube 5, other end is in freely to separate shape.
After this product expansion, the outer diameter in the portions internal layer filter screen B is less than the circumference outer diameter that the portions A outer layer supporting rod is formed, the two
Between form an empty shape of circle, the contact of internal layer filter screen and venous blood tube wall can be prevented, and then prevent vascular wall endometrial hyperplasia
Tissue, which is climbed, covers internal layer filter screen.
The above, representative instance only of the present invention, be not used in limitation the present invention, it is all on the basis of the present invention improve and
The example of extension is within protection scope of the present invention.
Claims (10)
1. a kind of ultrashort type bilayer vena cava filter, it is characterized in that being made of internal layer filter screen and outer layer supporting network two parts, outside
Layer supporting network is made of recycling hook, release attaching nut, outer layer supporting rod, hangnail；Internal layer filter screen by diamond shape filter screen and
Connecting tube forms.
2. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that the recycling of outer layer supporting network is hung
Hook, outer layer supporting rod, hangnail are formed by Nitinol pipe through laser engraving.
3. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that release attaching nut is through swashing
Photocoagulation is integral with recycling hook groups inside recycling hook.
4. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that the diamond shape of internal layer filter screen
Filter screen and connecting tube are formed by Nitinol pipe through laser engraving.
5. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that outer layer supporting network and internal layer
Filter screen is integral through laser welding group.
6. a kind of ultrashort type bilayer vena cava filter according to claim 2, it is further characterized in that outer layer supporting network contains 6
Outer layer supporting rod, 6 outer layer supporting rods are connected in 360 degree etc. points of arrangements with recycling hook.
7. a kind of ultrashort type bilayer vena cava filter according to claim 6, it is further characterized in that outer layer supporting rod and recycling
The S-type bending of linkage section is linked up with, bending rear end is one 3mm~20mm straight-bars, and it is in 15 degree~60 that bending section has 1 with straight-bar junction
Spend angle hangnail.
8. a kind of ultrashort type bilayer vena cava filter according to claim 7, it is further characterized in that each outer layer supporting rod is equal
Containing a hangnail, hangnail is consistent with outer layer supporting rod, in 360 degree etc. points of arrangements.
9. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that internal layer filter screen is by 6 phases
Arranged adjacent, diamond shape filter screen one is divided to be connected with connecting tube with 360 degree of size diamond shape filter screen etc., other end is in freely separating
Shape.
10. a kind of ultrashort type bilayer vena cava filter according to claim 1, it is further characterized in that after product expansion, internal layer
The outer diameter of filter screen is less than the circumference outer diameter that outer layer supporting rod is formed, and it is empty that a circle is formed between internal layer filter screen and outer layer supporting rod
Hole shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129485.8A CN108272531A (en) | 2017-03-06 | 2017-03-06 | A kind of ultrashort type bilayer vena cava filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129485.8A CN108272531A (en) | 2017-03-06 | 2017-03-06 | A kind of ultrashort type bilayer vena cava filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108272531A true CN108272531A (en) | 2018-07-13 |
Family
ID=62799390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129485.8A Withdrawn CN108272531A (en) | 2017-03-06 | 2017-03-06 | A kind of ultrashort type bilayer vena cava filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108272531A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226988A (en) * | 2019-06-05 | 2019-09-13 | 内蒙古工业大学 | A kind of retrievable vena cava filter and biofilter system |
| CN110507447A (en) * | 2019-09-24 | 2019-11-29 | 浙江归创医疗器械有限公司 | Vena cava filter and its recyclable device |
| CN110840621A (en) * | 2019-12-19 | 2020-02-28 | 成都迈德克科技有限公司 | Vena cava filter |
| CN113180880A (en) * | 2021-06-04 | 2021-07-30 | 上海蓝脉医疗科技有限公司 | Filter and medical device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060100660A1 (en) * | 2004-11-08 | 2006-05-11 | Cook Incorporated | Blood clot filter configured for a wire guide |
| WO2007079408A2 (en) * | 2005-12-30 | 2007-07-12 | C.R. Bard Inc. | Embolus blood clot filter with floating filter basket |
| US20070167974A1 (en) * | 2006-01-13 | 2007-07-19 | Cully Edward H | Removable blood conduit filter |
| CN203841850U (en) * | 2014-03-31 | 2014-09-24 | 孙媛 | Withdrawable inferior vena cava filter |
| EP2926768A1 (en) * | 2014-03-19 | 2015-10-07 | Cook Medical Technologies LLC | Vascular filter |
| CN105963047A (en) * | 2016-03-07 | 2016-09-28 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus multi-filtering device |
| CN106308974A (en) * | 2015-06-30 | 2017-01-11 | 先健科技(深圳)有限公司 | Filter |
-
2017
- 2017-03-06 CN CN201710129485.8A patent/CN108272531A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060100660A1 (en) * | 2004-11-08 | 2006-05-11 | Cook Incorporated | Blood clot filter configured for a wire guide |
| WO2007079408A2 (en) * | 2005-12-30 | 2007-07-12 | C.R. Bard Inc. | Embolus blood clot filter with floating filter basket |
| US20070167974A1 (en) * | 2006-01-13 | 2007-07-19 | Cully Edward H | Removable blood conduit filter |
| EP2926768A1 (en) * | 2014-03-19 | 2015-10-07 | Cook Medical Technologies LLC | Vascular filter |
| CN203841850U (en) * | 2014-03-31 | 2014-09-24 | 孙媛 | Withdrawable inferior vena cava filter |
| CN106308974A (en) * | 2015-06-30 | 2017-01-11 | 先健科技(深圳)有限公司 | Filter |
| CN105963047A (en) * | 2016-03-07 | 2016-09-28 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus multi-filtering device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110226988A (en) * | 2019-06-05 | 2019-09-13 | 内蒙古工业大学 | A kind of retrievable vena cava filter and biofilter system |
| CN110507447A (en) * | 2019-09-24 | 2019-11-29 | 浙江归创医疗器械有限公司 | Vena cava filter and its recyclable device |
| CN110840621A (en) * | 2019-12-19 | 2020-02-28 | 成都迈德克科技有限公司 | Vena cava filter |
| CN113180880A (en) * | 2021-06-04 | 2021-07-30 | 上海蓝脉医疗科技有限公司 | Filter and medical device |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180713 |
|
| WW01 | Invention patent application withdrawn after publication |