CN106937892A - One kind length puts die cavity venous filter - Google Patents
One kind length puts die cavity venous filter Download PDFInfo
- Publication number
- CN106937892A CN106937892A CN201710334610.9A CN201710334610A CN106937892A CN 106937892 A CN106937892 A CN 106937892A CN 201710334610 A CN201710334610 A CN 201710334610A CN 106937892 A CN106937892 A CN 106937892A
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- Prior art keywords
- line portion
- straight line
- resilient support
- die cavity
- filter
- Prior art date
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- Granted
Links
- 206010058109 Hangnail Diseases 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000002792 vascular Effects 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 210000003191 femoral vein Anatomy 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract 1
- 210000003462 vein Anatomy 0.000 description 7
- 208000007536 Thrombosis Diseases 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 206010014522 Embolism venous Diseases 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 208000004043 venous thromboembolism Diseases 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002889 endothelial cell Anatomy 0.000 description 1
- 210000003038 endothelium Anatomy 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 210000002460 smooth muscle Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000001631 vena cava inferior 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
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00035—Other metals or alloys
- A61F2310/00071—Nickel or Ni-based alloys
Landscapes
- 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
Die cavity venous filter is put the present invention relates to one kind length, belongs to medical instruments field.One kind length puts die cavity venous filter, including being centered around the axial multiple resilient support silks in same center, the head end of the multiple resilient support silk, which is collected, to be fixed in first end cap, and the end of multiple resilient support silks, which is collected, to be fixed in the second end cap provided with recovering hook；Resilient support silk is divided into three sections seamlessly transitted from head end to end, is camber line portion, first straight line portion and second straight line portion respectively；First straight line portion is parallel with central shaft, and length is 2~5 millimeters, and the angle between first straight line portion and second straight line portion is 130~170 degree.It is an advantage of the invention that：Long-term insert reaches 3 months, is difficult displacement, small with vascular wall contact surface, reduces endothelialization degree.It is convenient to insert and take out from femoral vein, reduce operation complexity and operational risk.
Description
Technical field
Die cavity venous filter is put the present invention relates to one kind length, belongs to medical instruments field.
Background technology
IVCF (inferior vena cava filter, IVCF) is for prevention inferior caval vein system embolus
Come off a kind of implantable medical treatment device for causing pulmonary embolism and designing.Vena cava filter generally can be divided into provisional filter,
Permanent filter, the class of recuperability filter 3.
Most recyclable filters are while referred to as " recyclable ", but because it allows the time window in indwelling body very short, and often 2
~3 weeks, during this period, venous thromboembolism (VTE) risk of many patients or anti-freezing taboo were not completely eliminated also, must not
Do not extend filter indwelling time, and once exceeded this prescribed time-limit, often because of thrombosis and interior membranization the problems such as cause
Filter is difficult to take out, therefore should not typically take out, and causes vein to avoid taking out difficult, avulsion covering filter newborn endothelium
Inner film injury.
Retrievable vena cava filter of the prior art is generally asymmetrical single umbrella-shaped structure, and filter is improved to a certain extent
The rate of recovery of device, extends recovery time window, but such filter easily filter occurs to side deflection when placing, during placement
Between it is long, with the activity of body, be easily caused the perforation of inferior caval vein, due to discontinuity, the disconnected of wire also easily occur
Split.And the filter (such as U.S. Cordis and the filter of Xian Jian companies) to shaping clinically at present, due to blood vessel
Contact surface is larger, and endothelial cell climbs the parcel of the migration of attached, smooth muscle and class loading thing, causes filter recovery time window short or can not
Smoothly reclaim, if reclaiming the damage for being likely to result in vascular wall by force.In addition the geometrical stability of this structure is poor, and filter easily goes out
Show displacement, tilt, easily filter bar occur in removal process splits and vascular damaged.The filter of The Budd Co. of the current U.S. is reclaimed
Phase is long, and the filter has by 8 overlapping ring groups into dome, has 6 radial cones of leg under it, can capture for two layers up and down
Thrombus, but there are still following shortcoming：1st, asymmetric labyrinth adds operation difficulty, easy deflection；2nd, filter is reclaimed
Device has to operate from jugular vein, adds operating difficulty and reclaims the risk of complication.
The content of the invention
For the recyclable length that is filtered to the thrombus in blood to put die cavity quiet it is an object of the invention to provide a kind of
Arteries and veins filter, can realize the strong fix in vein blood vessel, eliminate and tilt, shift and cause the shortcomings of inferior caval vein is perforated, prolong
Long Implantation Time, reduces endothelialization degree, improves to thrombus interception rate, and be easy to place and reclaim.
To achieve the above object, the present invention uses following technical scheme：
One kind is long to put die cavity venous filter, including is centered around same central shaft (central shaft not entity structure, is first
Hold the line of cap and the second end cap) around multiple resilient support silk, the multiple head end for flexibly supporting silk, which is collected, to be fixed on
In first end cap, the end of multiple resilient support silks, which is collected, to be fixed in the second end cap provided with recovering hook；
The part between the cap of two ends of resilient support silk is divided into three sections seamlessly transitted from head end to end, respectively
It is camber line portion, first straight line portion and second straight line portion；First straight line portion is parallel with central shaft, and length is 2~5 millimeters, first
Angle (α) between line part and second straight line portion is 130 degree~170 degree；The camber line portion of multiple resilient support silks surrounds umbrella shape
Basket, the second straight line portion of multiple resilient support silks surrounds taper basket.
At least three resilient support silk is provided with hangnail.The quantity of hangnail on each resilient support silk is 1 or many
It is individual, the position that hangnail can be contacted with vascular wall on the supporting wire, such as optional position in first straight line portion and camber line portion or
The position in the close first straight line portion in second straight line portion, hangnail can play fixation after filter is placed.With barbed
Supporting wire is uniformly distributed in filter, makes filter stress equalization, is not susceptible to tilt and displacement.
A diameter of 0.05~1 millimeter of the resilient support silk, preferably 0.1~0.5 millimeter, more preferably 0.2~0.4 milli
Rice, such as 0.25 millimeter, 0.28 millimeter, 0.35 millimeter.
The shape of the end cap can be cylindricality, annular, taper, piece shape, cup etc., preferably tubular, column or taper.
Wherein column can be cylinder or polygon prism, and tubular can be one end open or both ends open.
When holding cap for tubular, wall thickness is 0.1~0.5 millimeter, more preferably preferably 0.2~0.5 millimeter, 0.3~0.5 millimeter.
Angle (α) between the first straight line portion and second straight line portion is preferably 140 degree~160 degree.
The resilient support silk is 4~8, preferably 5~6.
The material of the resilient support silk is medical stainless steel or memorial alloy, such as Ultimum Ti.With special
Mould is after heat treatment shaped, and is controlled Technology for Heating Processing, is reached the super-elasticity and memory function of needs.
In a free state, a diameter of 24~40 millimeters, length is 40~60 millimeters to filter of the present invention.
The vena cava filter can further include medical device coatings, and the coating can prevent cell in Medical treatment device
The superficial growth of tool, suppresses medical apparatus surface endothelialization, extends recovery time window, to improve the medicine equipment after implantation human body
Recovery rate.
Overall structure of the present invention uses symmetric design, and filter upper and lower part forms double-deck basket, can effectively catching thrombus,
Overall structure shrinkage is good, is easy to place and reclaim filter, is not easy to shift in the blood vessels after inserting in vivo, comes off.Each bullet
Property supporting wire first straight line portion be in contact with vascular wall, only 2~5 millimeters, can reduce filter surface formation endothelialization.
The fixed structure that the present invention is designed not only ensure that whole vena cava filter has good stability, Bu Huifa
Raw displacement, tilt, and small with vascular wall contact area, it is to avoid vascular tissue is in vena cava filter superficial growth, favorably
The return period of extension filter, the security and the rate of recovery of operation are improved.Vena cava filter does not bounce when discharging, and discharges
Filter is in close contact with wall of vein afterwards, there is good supporting role to vena cave, and filter is difficult displacement, also prevented to a certain extent
Only generation cavity phlebostenosis.
It is an advantage of the invention that：Stability Analysis of Structures, is difficult displacement, can for a long time insert and reach 3 months, with vascular wall contact surface
It is small, endothelialization degree is reduced, it is convenient to insert and take out from femoral vein, reduce operation complexity and operational risk.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1
Fig. 2 is the side structure schematic view of the resilient support silk of embodiment 1
Fig. 3 is the overlooking the structure diagram of embodiment 1
Fig. 4 is the riding position schematic diagram in human body of embodiment 1
Fig. 5 is the structural representation of embodiment 2
Fig. 6 is the overlooking the structure diagram of embodiment 2
Embodiment
The present invention is described in further details and introduced with reference to the accompanying drawings and detailed description, not to the present invention
The limitation of protection domain, all this area equivalents carried out according to the disclosure of invention, belongs to the protection model of the present invention
Enclose.
Embodiment 1
Referring to figs. 1 to shown in Fig. 4, one kind length puts die cavity venous filter, including is centered around axial 6 of same center
Equally distributed resilient support silk, the head end of 6 resilient support silk, which is collected, to be fixed in first end cap (6), 6 elasticity branch
The end of support wire, which is collected, to be fixed in the second end cap (5) provided with recovering hook；
The part between the cap of two ends of resilient support silk is divided into three sections seamlessly transitted from head end to end, respectively
It is camber line portion (1), first straight line portion (2) and second straight line portion (3)；The first straight line portion (2) of all elastic supporting wire is with
Heart axle is parallel, and length is 5 millimeters, the angle (α) between the first straight line portion (2) and second straight line portion (3) of each resilient support silk
It is 150 degree；The camber line portion (1) of 6 resilient support silks surrounds a umbrella shape basket, 6 resilient support in the upper position of filter
The second straight line portion (3) of silk surrounds a taper basket in the lower position of filter.
A hangnail (4) is respectively provided with the first straight line portion (2) of 6 resilient support silks.
Resilient support silk is made of medical stainless steel, a diameter of 0.5 millimeter.
The first end cap (6) is shaped as tubular, and wall thickness is 0.5 millimeter.
Long die cavity venous filter length of putting is 56mm, and filter maximum gauge is 32mm, and filter end (distal end) is set
There is the second end cap (5) of recovering hook, catcher hooks filter during for reclaiming filter, being easy to withdraw filter from femoral vein.
The present invention can once place success, and conveyer (7) (can be the domestic conveyers of 12F) departs from filter from femoral vein
When, filter is opened completely, and the first straight line portion (2) of 6 supporting wires fits with vascular wall, and is fixed on blood vessel by hangnail 4
On wall, position is stable, supreme lower displacement.After emitting filter, cavography has no vena cave perforation, filter deformation, vena cave
Blood flow can be placed in vivo up to 3 months for a long time without being obstructed.
Embodiment 2
Refering to shown in Fig. 5 and Fig. 6, one kind length puts die cavity venous filter, including is centered around axial 8 of same center
Equally distributed resilient support silk, the head end of 8 resilient support silk, which is collected, to be fixed in first end cap (6), 8 elasticity branch
The end of support wire, which is collected, to be fixed in the second end cap (5) provided with recovering hook；
The part between the cap of two ends of resilient support silk is divided into three sections seamlessly transitted from head end to end, respectively
It is camber line portion (1), first straight line portion (2) and second straight line portion (3)；The first straight line portion (2) of all elastic supporting wire is with
Heart axle is parallel, and length is 2 millimeters, the angle (α) between the first straight line portion (2) and second straight line portion (3) of each resilient support silk
It is 155 degree；The camber line portion (1) of 8 resilient support silks surrounds a umbrella shape basket, 8 resilient support in the upper position of filter
The second straight line portion (3) of silk surrounds a taper basket in the lower position of filter.
8 resilient support silks are divided into two groups, every group 4, close first straight line portion of the one of which in its camber line portion (1)
Position is provided with a hangnail (4), and another group is not provided with hangnail, and two groups of supporting wires are intervally arranged.
Resilient support silk is made of medical Ultimum Ti, a diameter of 0.25 millimeter.
The first end cap (6) is shaped as tubular, and wall thickness is 0.5 millimeter.
Long die cavity venous filter length of putting is 45mm, and filter maximum gauge is 30mm, and filter end (distal end) is set
There is the second end cap (5) of recovering hook, catcher hooks filter during for reclaiming filter, being easy to withdraw filter from femoral vein.
Medical device coatings are also provided with Ultimum Ti surface, the coating can be medication coat or macromolecule
Coating, for preventing cell in the superficial growth of medicine equipment, suppresses medical apparatus surface endothelialization, extends recovery time window,
To improve the recovery rate of the medicine equipment after implantation human body.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent and improvement made within refreshing and principle etc., should be included within the scope of the present invention.
Claims (10)
1. one kind length puts die cavity venous filter, including is centered around the axial multiple resilient support silks in same center, described many
The head end of individual resilient support silk, which is collected, to be fixed in first end cap, and the end of multiple resilient support silks, which is collected, to be fixed on provided with recovery
In second end cap of hook, it is characterised in that：
The part between the cap of two ends of resilient support silk is divided into three sections seamlessly transitted from head end to end, is arc respectively
Line portion, first straight line portion and second straight line portion；First straight line portion is parallel with central shaft, and length is 2~5 millimeters, first straight line portion
Angle between second straight line portion is 130~170 degree；The camber line portion of multiple resilient support silks surrounds umbrella shape basket, multiple elasticity
The second straight line portion of supporting wire surrounds taper basket.
2. a kind of length according to claim 1 puts die cavity venous filter, it is characterised in that：At least three resilient support
Silk is provided with hangnail.
3. a kind of length according to claim 1 or 2 puts die cavity venous filter, it is characterised in that：The resilient support silk
A diameter of 0.05~1 millimeter.
4. a kind of length according to claim 3 puts die cavity venous filter, it is characterised in that：The diameter of the resilient support silk
For 0.1~0.5 millimeter, preferably 0.2~0.4 millimeter.
5. a kind of length according to claim 1 or 2 puts die cavity venous filter, it is characterised in that：The end cap is shaped as
Cylindricality, annular, taper, piece shape, cup or tubular.
6. a kind of length according to claim 5 puts die cavity venous filter, it is characterised in that：When the end cap is tubular, wall
Thickness is 0.1~0.5 millimeter, more preferably preferably 0.2~0.5 millimeter, 0.3~0.5 millimeter.
7. a kind of length according to claim 1 or 2 puts die cavity venous filter, it is characterised in that：The first straight line portion with
Angle between second straight line portion is 140~160 degree.
8. a kind of length according to claim 1 or 2 puts die cavity venous filter, it is characterised in that：The resilient support silk is 4
~8, preferably 5~6.
9. a kind of length according to claim 1 or 2 puts die cavity venous filter, it is characterised in that：The resilient support silk
Material is medical stainless steel or memorial alloy.
10. a kind of length according to claim 9 puts die cavity venous filter, it is characterised in that：The vena cava filter is also wrapped
Include medical device coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334610.9A CN106937892B (en) | 2017-05-12 | 2017-05-12 | A kind of length sets type vena cava filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334610.9A CN106937892B (en) | 2017-05-12 | 2017-05-12 | A kind of length sets type vena cava filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106937892A true CN106937892A (en) | 2017-07-11 |
| CN106937892B CN106937892B (en) | 2019-02-19 |
Family
ID=59464891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710334610.9A Active CN106937892B (en) | 2017-05-12 | 2017-05-12 | A kind of length sets type vena cava filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106937892B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109394379A (en) * | 2017-08-18 | 2019-03-01 | 微创心脉医疗科技（上海）有限公司 | Filter unit |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29500864U1 (en) * | 1995-01-20 | 1996-05-23 | Waggershauser, Tobias, Dr.med., 81669 München | Kava filter |
| US20010025187A1 (en) * | 2000-03-23 | 2001-09-27 | Masayosi Okada | Vein filter |
| US20020091409A1 (en) * | 1999-07-30 | 2002-07-11 | Sutton Gregg S. | Vascular filter system for cardiopulmonary bypass |
| US20080147110A1 (en) * | 2006-12-19 | 2008-06-19 | Lalith Hiran Wijeratne | Embolic protection device with distal tubular member for improved torque response |
| US20090043332A1 (en) * | 2004-04-16 | 2009-02-12 | Cordis Corporation | Asymmetrical medical filter |
| US20130006295A1 (en) * | 2002-02-20 | 2013-01-03 | Chanduszko Andrzej J | IVC Filter with Translating Hooks |
| US20140012310A1 (en) * | 2012-07-06 | 2014-01-09 | Cook Medical Technologies Llc | Conical vena cava filter with jugular or femoral retrieval |
| CN205041565U (en) * | 2015-10-12 | 2016-02-24 | 吴学志 | Vena cave thrombus extractor |
| CN105520791A (en) * | 2015-09-08 | 2016-04-27 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus 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 |
-
2017
- 2017-05-12 CN CN201710334610.9A patent/CN106937892B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29500864U1 (en) * | 1995-01-20 | 1996-05-23 | Waggershauser, Tobias, Dr.med., 81669 München | Kava filter |
| US20020091409A1 (en) * | 1999-07-30 | 2002-07-11 | Sutton Gregg S. | Vascular filter system for cardiopulmonary bypass |
| US20010025187A1 (en) * | 2000-03-23 | 2001-09-27 | Masayosi Okada | Vein filter |
| US20130006295A1 (en) * | 2002-02-20 | 2013-01-03 | Chanduszko Andrzej J | IVC Filter with Translating Hooks |
| US20090043332A1 (en) * | 2004-04-16 | 2009-02-12 | Cordis Corporation | Asymmetrical medical filter |
| US20080147110A1 (en) * | 2006-12-19 | 2008-06-19 | Lalith Hiran Wijeratne | Embolic protection device with distal tubular member for improved torque response |
| US20140012310A1 (en) * | 2012-07-06 | 2014-01-09 | Cook Medical Technologies Llc | Conical vena cava filter with jugular or femoral retrieval |
| CN105520791A (en) * | 2015-09-08 | 2016-04-27 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus filter |
| CN205041565U (en) * | 2015-10-12 | 2016-02-24 | 吴学志 | Vena cave thrombus extractor |
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109394379A (en) * | 2017-08-18 | 2019-03-01 | 微创心脉医疗科技（上海）有限公司 | Filter unit |
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| CN106937892B (en) | 2019-02-19 |
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