CN108210112A - Inferior caval vein temporary filter (F.T.) - Google Patents
Inferior caval vein temporary filter (F.T.) Download PDFInfo
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- CN108210112A CN108210112A CN201711434251.0A CN201711434251A CN108210112A CN 108210112 A CN108210112 A CN 108210112A CN 201711434251 A CN201711434251 A CN 201711434251A CN 108210112 A CN108210112 A CN 108210112A
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- casing
- filtration
- drag wire
- setting
- bridle catcher
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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
- A61F2002/016—Filters implantable into blood vessels made from wire-like elements
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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)
Abstract
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher including lower part, which is characterized in that line-hanging structure on the bridle catcher is set, a long drag wire, long another end dissociative of drag wire are set at line-hanging structure；Setting sleeve structure, also sets up a push rod for releasing filtration by pushing bridle catcher in casing on the outside of the long drag wire；The length of long drag wire and casing can ensure long drag wire be set in casing and together with the setting of casing rearmost end in vitro, and casing and long drag wire other parts be set to it is intravascular.Combination of the line-hanging structure for oblique notch or drag wire annulus；The filter is circular cone filtration, spindle filtration or is folding bar filtration.By setting long drag wire on the filter, bridle catcher run-off the straight can be effectively prevent, and because setting is fixed in vitro, using terminating after facilitate collection；The filtration that more folding bars are formed can realize the purpose being adjusted according to the blood vessel size situation of patient.
Description
Technical field
The invention belongs to intervention radiation field medical instruments, and pulmonary artery bolt is prevented especially for a kind of merging inferior caval vein
The thrombus filter tool of plug, and in particular to be a kind of inferior caval vein temporary filter (F.T.).
Background technology
Pulmonary embolism (abbreviation pulmonary embolism Pulmonary Embolism, PE) refers to that endogenous or exogenous embolus block
Pulmonary artery or its branch cause the clinic of disturbance of pulmonary circulation and pathologic, physiologic syndrome；It is serious to cause sudden death.Embolus is usual
From lower limb and the Deep venou of pelvis, cause embolism by being recycled to pulmonary artery；It is but seldom quiet from upper limb, head and neck
Arteries and veins.Research shows that the Deep venou from lower limb and pelvis accounts for the 60%-90% in embolus source.It is possible thereby to it is opened in renal vein
A thrombus filter is placed at mouth place below horizontal, i.e. inferior caval vein, is intercepted the free embolus in blood, can effectively be prevented
The generation of pulmonary embolism PE, at present the technology be just constantly applied to clinical treatment and achieving good effect.
Difference according to thrombus filter retention time in vivo is divided into：Permanent thrombus filter and recyclable thrombus mistake
Filter.It is permanently placed after permanent thrombus filter merging, it is impossible to take out, such thrombus filter may after placing for a long time
There is corresponding complication, be such as displaced, vena cave perforation, local thrombus is formed, inferior vena cava obstruction etc.；Patient needs simultaneously
Take anticoagulant for a long time, this brings significant limitation to the practical application of permanent thrombus filter.Recyclable thrombus
Filter is to start the nearly more than ten years to promote and apply, such thrombus filter can take within the certain time after its implantation from vivo
Go out, the shortcomings that so as to avoid Permanent implantation thrombus filter.
At present, temporary filter (F.T.) one kind is conical thrombus filter, and such filter is poor from center capacity, is implanted into cavity of resorption
It is easily tilted under the influence of blood flow effect and patient's own activity after vein, inclined recycling head is close to vascular wall；It is recycling
In the process, recycling instrument can not quick and precisely capture recycling head, can increase the operation time of instrument recycling, even result in
The reclaimer operation failure of instrument；And a hook formation, the shaking back and forth of such setting are generally set on the recycling head shaken
Sometimes the risk of blood vessel is damaged, and its shaking be easy to cause the movement of entire filter, increases application risk；Because of cone
Filter is set for single layer structure, there is filtering thrombus energy force difference；Fixed effect is poor, is easily shifted after implantation；Therefore one is needed
Kind can effectively fix recycling head position, and can increase filter effect, prevent the instrument of implantation backward shift.
The present invention recycles head easy sticker vascular wall, filter single layer filter effect for prior art cone thrombus filter
The problems such as fruit is poor, provides a kind of rational in infrastructure, uses simple inferior caval vein temporary filter (F.T.).
Invention content
In order to overcome prior art cone thrombus filter, head easy sticker vascular wall, filter single layer filter effect are recycled
The problems such as poor, the present invention provide a kind of inferior caval vein temporary filter (F.T.).
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher including lower part, which is characterized in that institute
It states and line-hanging structure is set on bridle catcher, a long drag wire, long another end dissociative of drag wire are set at line-hanging structure；The long drawing
Setting sleeve structure, also sets up a push rod for releasing filtration by pushing bridle catcher in casing on the outside of line；Long drawing
The length of line and casing can ensure long drag wire be set in casing and together with the setting of casing rearmost end in vitro, and casing and
Long drag wire other parts are set to intravascular.Above-mentioned can be a kind of inferior vena cava filter.In use, long drag wire is lain in
Or be placed on line-hanging structure, filtration, bridle catcher and push rod are set in casing；Seal wire enters first from upper arm vein blood vessel
Inferior caval vein designated position, after by seal wire guide the casing with filtration by upper arm vein or subclavian vein blood vessel into
Enter to after inferior caval vein designated position, bridle catcher is controlled by push rod, casing of dropping back makes filtration be taken off from structure for conveying
Go out；It is discharged；After withdraw from guide wire and push rod；Long drag wire is arranged in casing and is set together with casing in vivo,
Long drag wire is arranged on casing least significant end on the outside of arm or below clavicle；Long drag wire one end pulls bridle catcher, and one end is fixed
In vitro at upper arm or below clavicle；Casing one end, which is arranged on filtration end, does not influence filtration position；One end is fixed
In vitro at upper arm or below clavicle.It can not have to be introduced back into seal wire when involving, but bridle catcher is pulled by long drag wire,
Filtration is made to be recovered in casing, sleeve structure is withdrawn from；Recycling can be effectively ensured in the setting of above-mentioned long drag wire
Bar is upright, prevents its run-off the straight, and involves filter and can effectively reduce the operating time, reduces patient suffering.
Further, the front end of described sleeve pipe structure is set as slightly stereoplasm tube；I.e. casing setting in vivo after in navel to chest
Mouth section setting slightly stereoplasm tube；The rear end of described sleeve pipe structure is set as slightly at upper arm again after being placed in vivo from chest to neck
Soft pipe；Such setting can ensure that navel keeps specific shape to chest section, prevent blood vessel caused by due to deformation from injuring, and
And ensure that the structurally variable shape at upper arm or below clavicle is arrived in chest to neck again, ensure to change and change with body, Er Qiefang
Just it is fixed at upper arm or below clavicle.
Further, the line-hanging structure is the oblique notch on a bridle catcher；Long drag wire is lain on oblique notch.It is such
The oblique notch of setting can realize that a structure is set simultaneously at long drag wire and the setting for providing seal wire.
Alternatively, the line-hanging structure is set to the long drag wire annulus at the top of bridle catcher for one；Long drag wire lies in length and leads
On bracing wire annulus, such setting can ensure the direction of drawing silk and the consistency of bridle catcher.
Further, the long drag wire soft nylon wire strong for toughness；The setting of nylon wire can ensure the intensity of line,
Can reduce the long period to the greatest extent again is set in vivo to the interference of patient activity.
Further, the filtration can be arbitrary filtration, wherein being preferably：The filtration is circular cone
Shape filtration or spindle filtration；Filtration has memory metal material preparation；Fusellal fabric can also be effectively prevent
Blood vessel is caused to damage.
When the filtration is conical filtering structure, set in each branch of conical filtering structure end small
The rubber ring structure that ball cystic structures or setting link together each branches end, above-mentioned setting can effectively prevent filtering to tie
Injury of the structure branches end to blood vessel.
Alternatively, the filtration all can mutually be rolled over around the intermediate connection of bridle catcher and rotatably for a plurality of upper and lower side
Item；Also set up folding bar movement locking structure；Double medium filtration, further, a plurality of folding in upper end are realized by the folding bar of upper and lower side
The setting of upper end on a movement annulus, mobile annulus can be moved up and down along bridle catcher, and lower end folding bar, which is arranged on, is fixed on recycling
On the disk of bar bottom；Such setting can realize the opening of filter by the way that the folding bar of top is pushed to move down；And it is one
The adjustable filter of kind, can be to meet the needs of more patient vessel's sizes.
Further, described every a plurality of folding bar size is identical；Identical size setting can conveniently adjust setting.
Further, it is described in the folding bar of upper end, and the end setting micro-arc protrusion intersected with lower end folding bar or small sacculus
Structure, such setting can ensure not contact excessively with vascular wall, and vascular wall will not be formed again and injured.
Further, setting band curved strip made of memory material in the middle part of upper and lower side folding bar；Band curved strip will not contact blood vessel
Edge, such setting can increase the intensity of filtering.
Further, the direction with curved strip in upper and lower side folding bar is not quite identical；It is such this further to stop blood
Bolt.
Further, the end of the junction of the upper and lower side folding bar sets small ring, and two small rings are arranged in a crossed manner, realizes and mutually turns
It is dynamic；
Further, the micro-arc is provided projectingly in small ring front end；
Further, the locking structure is big for the external loop diameter for screens being set to be recessed and can fall into micro-pits on bridle catcher
In the elastic screens ring of bridle catcher size.
Further, one screens ring pressing structure of setting in described sleeve pipe, the pressing structure for one can push screens ring and
The throw-out collar that the upper end circular ring structure moves downward, throw-out collar structure are placed on bridle catcher, are connected one thereafter and are pushed away item.
Further, the screens recess can be set multiple, and such setting can be realized adjusts filter according to patient size
The purpose of size.
Further, the screens recess upper dimension is smaller, the lower dimension structure consistent with bridle catcher, such structure
Can ensure that barrier can not be had smoothly downwards when moving down screens ring.
Further, the upper and lower side folding bar respectively sets 3-6 roots, wherein preferably each setting 4.Such setting can protected
Under the premise of demonstrate,proving stability, ensure the validity of filtering.
Further, setting drawing structure, drawing structure front end setting drawing hook, drawing structure tie filtering at the end of being used for
Structure is packed up.
With folding bar filter in use, lying in or being placed on line-hanging structure by long drag wire first, filtration, bridle catcher
And push rod is set in casing；Seal wire first trip enters inferior caval vein designated position from upper arm vein or subclavian vein blood vessel, after
After the casing with filtration being guided to pass into inferior caval vein designated position by seal wire, bridle catcher is controlled by push rod,
It slightly drops back sleeve structure, filtration and bridle catcher is made to deviate from from structure for conveying；After device to be filtered leaks out, push rod is withdrawn from,
Screens ring pressing structure is re-introduced into, pushing it, such filter is set in designated position to stopping after suitable recessed position；
Finally by seal wire, screens ring pressing structure is withdrawn from vitro；The length of long drag wire is finally adjusted, makes bridle catcher and vessel directions one
After cause, fixed exhausting line, and the processing of minimally invasive wound is done, complete the placement of filter.After device to be filtered completes filtering, it will pull
Hook is entered by casing, after by pulling hook bridle catcher top will be moved on screens ring, rear drawing hook hook column filtration, on
Draw will filtration take in casing after pull long drag wire simultaneously entire filter be recovered in casing, after withdraw from casing,
Complete the use of entire filter.
Compared with prior art, long drag wire is set on filter of the present invention, bridle catcher can be effectively ensured
Run-off the straight, the filtration that more folding bars are formed can realize the purpose being adjusted according to the blood vessel size situation of patient.It is defeated
Send structure that can effectively realize merging and taking-up with folding bar filter, it is simple to operate.
Description of the drawings
Fig. 1 is filter of the present invention position overall structure diagram in human body；
Fig. 2 is that the present invention sets the filter of bead cystic structures integrally to tie with conical filtering structure and bifurcation end
Structure schematic diagram；
Fig. 3 is the present invention with conical filtering structure and filter that bifurcation end is the rubber ring structure to link together
Overall structure diagram；
Fig. 4 is the filter overall structure diagram of the invention with spindle filtration；
Fig. 5 is the filter overall structure diagram of the filtration of the invention with folding bar；
Fig. 6 is that the present invention sets the filter front of bead cystic structures saturating with conical filtering structure and bifurcation end
Depending on structure diagram；
Fig. 7 is the conical filtering structure structure diagram that bifurcation end of the present invention sets bead cystic structures；
Fig. 8 is the present invention with conical filtering structure and filter that bifurcation end is the rubber ring structure to link together
Front end perspective structure schematic diagram；
Fig. 9 is the conical filtering structure structural representation that bifurcation end of the present invention is the rubber ring structure to link together
Figure；
Figure 10 is the filter front perspective structure schematic diagram of the invention with spindle filtration；
Figure 11 is spindle filtration structure diagram of the present invention；
Figure 12 is the filter front perspective structure schematic diagram of the filtration of the invention with folding bar；
Figure 13 is partial enlargement structural representation at the long drag wire annulus of the present invention；
Figure 14 is that the filter of the filtration of the invention with folding bar does not include casing, push rod and the internal junction for pulling structure
Structure schematic diagram；
Figure 15 is folding bar filtration enlarged structure schematic diagram of the present invention；
Figure 16 is two folding bar junction partial enlargement structural representation of folding bar filter of the present invention；
Figure 17 is folding bar filter screens loop section partial enlargement structural representation of the present invention；
In figure, 1, bridle catcher；11st, long drag wire annulus；12nd, oblique notch；21st, conical filtering structure；22nd, band folding bar
Filtration；221st, folding bar；222nd, mobile annulus；223rd, disk；224th, micro-arc protrudes；225th, band curved strip；226th, small ring；
227th, screens ring；228th, screens is recessed；23rd, spindle filtration；3rd, long drag wire；41st, throw-out collar；42nd, item is pushed away；43rd, it pulls
Structure；44th, hook is pulled；5th, push rod；6th, casing；7th, bead cystic structures；8th, rubber ring structure.
Specific embodiment
It is attached since guide wire and 23 shape of spindle filtration are technical characteristic included in the prior art
Concrete structure, the existing guide wire of structural reference and spindle filtration are not provided in figure.
A kind of 1 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to 3 outside of intravascular long drag wire.Line-hanging structure is a bridle catcher
Oblique notch 12 on 1；Long drag wire 3 is lain on oblique notch 12.The oblique notch 12 of such setting can realize a knot
Structure is set simultaneously at long drag wire 3 and the setting for providing seal wire.The long drag wire 3 soft nylon wire strong for toughness；Nylon wire
Setting can ensure the intensity of line, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.It crosses
Filter structure is conical filtering structure 21, and 21 end of conical filtering structure sets the glue that each branches end links together
Coil structures 8, filtration is prepared by memory metal material.The front end of 6 structure of casing is set as slightly stereoplasm tube；I.e. casing 6 is set
To setting slightly stereoplasm tube to chest section in navel after in vivo；After the rear end of 6 structure of casing i.e. merging in vivo from chest to neck again
Slightly soft pipe is set as at below to upper arm or clavicle；Such setting can ensure that navel keeps specific shape to chest section, prevent
Only due to deformation caused by blood vessel injure, and ensure that structurally variable shape at upper arm or below clavicle is arrived in chest to neck again,
Ensure to change and change with body, and conveniently fixed at upper arm or below clavicle.
In use, long drag wire 3 lies in or is placed on line-hanging structure, filtration, bridle catcher 1 and push rod 5 are set to set
In pipe 6；Seal wire first trip enters inferior caval vein designated position from upper arm vein or subclavian vein blood vessel, after band guided by seal wire
After the casing 6 of filtration passes into inferior caval vein designated position, bridle catcher 1, recession conveying knot are controlled by push rod 5
Structure makes filtration and bridle catcher 1 deviate from from structure for conveying；It is discharged；After withdraw from structure for conveying, guide wire and push rod
5；Long drag wire 3 is arranged in casing 6 and is set together in vivo with casing 6, and long 3 one end of drag wire pulls bridle catcher 1, and one end is solid
Be scheduled at external upper arm or clavicle below；6 one end of casing, which is arranged on filtration end, does not influence filtration；One end is fixed on
At external upper arm or below clavicle.It can not have to be introduced back into seal wire when involving, but bridle catcher 1 is pulled by long drag wire 3,
Filtration is made to be recovered in casing 6, finally withdraws from 6 structure of casing；The setting of above-mentioned long drag wire 3 can be effectively ensured
Bridle catcher 1 is upright, prevents its run-off the straight, and involves filter and can effectively reduce the operating time, reduces patient suffering.
A kind of 2 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to intravascular 3 outside line-hanging structure of long drag wire and are set to for one
The long drag wire annulus 11 at 1 top of bridle catcher；Long drag wire 3 is lain on long drag wire annulus 11.Such setting can ensure to lead
The direction of wire drawing and the consistency of bridle catcher 1.The oblique notch 12 of such setting can realize that a structure sets length to lead simultaneously
At bracing wire 3 and the setting of offer seal wire.The long drag wire 3 soft nylon wire strong for toughness；The setting of nylon wire can ensure line
Intensity, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.Filtration is cone
Filtration 21, setting bead cystic structures 7 in each branch in 21 end of conical filtering structure, filtration is by memory metal material
It is prepared by material.The front end of 6 structure of casing is set as slightly stereoplasm tube；I.e. the setting of casing 6 is set slightly after arriving in vivo in navel to chest section
Stereoplasm tube；After the rear end of 6 structure of casing i.e. merging in vivo slightly soft pipe is set as at upper arm again to neck from chest；It is such to set
Putting can ensure that navel keeps specific shape to chest section, prevent blood vessel caused by due to deformation from injuring, and ensure that chest is arrived
Neck arrives the structurally variable shape at upper arm or below clavicle again, and ensures to change with body, and conveniently at upper arm consolidate
It is fixed.
In use, long drag wire 3 lies in or is placed on line-hanging structure, filtration, bridle catcher 1 and push rod 5 are set to set
In pipe 6；Seal wire first trip enters inferior caval vein designated position from upper arm vein or subclavian vein blood vessel, after band guided by seal wire
After the casing 6 of filtration passes into inferior caval vein designated position, bridle catcher 1, recession conveying knot are controlled by push rod 5
Structure makes filtration and bridle catcher 1 deviate from from structure for conveying；It is discharged；After withdraw from structure for conveying, guide wire and push rod
5；Long drag wire 3 is arranged in casing 6 and is set together in vivo with casing 6, and long 3 one end of drag wire pulls bridle catcher 1, and one end is solid
Be scheduled at external upper arm or clavicle below；6 one end of casing, which is arranged on filtration end, does not influence filtration；One end is fixed on
At external upper arm.It can not have to be introduced back into seal wire when involving, but bridle catcher 1 is pulled by long drag wire 3, make filtration
It is recovered in casing 6, finally withdraws from 6 structure of casing.
A kind of 3 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to 3 outside of intravascular long drag wire.Line-hanging structure is set to for one
The long drag wire annulus 11 at 1 top of bridle catcher；Long drag wire 3 is lain on long drag wire annulus 11.Such setting can ensure to lead
The direction of wire drawing and the consistency of bridle catcher 1.The oblique notch 12 of such setting can realize that a structure sets length to lead simultaneously
At bracing wire 3 and the setting of offer seal wire.The long drag wire 3 soft nylon wire strong for toughness；The setting of nylon wire can ensure line
Intensity, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.Filtration is spindle
Filtration 23；Spindle filtration 23 is prepared by memory metal material；Fusellal fabric can also effectively prevent making blood vessel
Into damage, filtration is prepared by memory metal material.The front end of 6 structure of casing is set as slightly stereoplasm tube；That is the setting of casing 6 is arrived
In navel to chest section setting slightly stereoplasm tube after in vivo；The rear end of 6 structure of casing i.e. be placed in vivo after from chest to neck again to
Slightly soft pipe is set as at upper arm or below clavicle；Such setting can ensure that navel keeps specific shape to chest section, prevent
Blood vessel caused by due to deformation injures, and ensures that the structurally variable shape at upper arm or below clavicle is arrived in chest to neck again, protects
Card changes with body and is changed, and is conveniently fixed at upper arm.
In use, long drag wire 3 lies in or is placed on line-hanging structure, filtration, bridle catcher 1 and push rod 5 are set to set
In pipe 6；Seal wire first trip enters inferior caval vein designated position from upper arm vein or subclavian vein blood vessel, after band guided by seal wire
After the casing 6 of filtration passes into inferior caval vein designated position, bridle catcher 1, recession conveying knot are controlled by push rod 5
Structure makes filtration and bridle catcher 1 deviate from from structure for conveying；It is discharged；After withdraw from structure for conveying, guide wire and push rod
5；Long drag wire 3 is arranged in casing 6 and is set together in vivo with casing 6, and long 3 one end of drag wire pulls bridle catcher 1, and one end is solid
It is scheduled at external upper arm；6 one end of casing, which is arranged on filtration end, does not influence filtration；One end is fixed at upper arm in vitro
Or below clavicle.It can not have to be introduced back into seal wire when involving, but bridle catcher 1 is pulled by long drag wire 3, make filtration
It is recovered in casing 6, finally withdraws from 6 structure of casing.
A kind of 4 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to 3 outside of intravascular long drag wire；Line-hanging structure is a bridle catcher
Oblique notch 12 on 1；Long drag wire 3 is lain on oblique notch 12.The oblique notch 12 of such setting can realize a knot
Structure is set simultaneously at long drag wire 3 and the setting for providing seal wire.The long drag wire 3 soft nylon wire strong for toughness；Nylon wire
Setting can ensure the intensity of line, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.Set
The front end of 6 structure of pipe is set as slightly stereoplasm tube；That is the setting of casing 6 to chest section in navel to setting slightly stereoplasm tube after in vivo；Set
After the rear end of 6 structure of pipe i.e. merging in vivo slightly soft pipe is set as at upper arm or below clavicle again from chest to neck；It is such
Setting can ensure that navel keeps specific shape to chest section, prevent blood vessel caused by due to deformation from injuring, and ensure chest
It arrives the structurally variable shape at upper arm or below clavicle again to neck, ensures to change and change with body, and conveniently at upper arm
It is or fixed below clavicle.
Folding bar filtration 22 all connects among bridle catcher 1 for a plurality of upper and lower side and can mutually rotatable folding bar
221；It also sets up folding bar 221 and moves locking structure；Double medium filtration, a plurality of folding bar 221 in upper end are realized by the folding bar 221 of upper and lower side
Upper end, which is set, moves with one on annulus 222, and mobile annulus 222 can be moved up and down along bridle catcher 1, and lower end folding bar 221 is arranged on solid
Due on the disk 223 of 1 bottom of bridle catcher；Such setting can realize filtering by the way that the folding bar 221 of top is pushed to move down
The opening of device；And be a kind of adjustable filter, can be to meet the needs of more patient vessel's sizes.Every a plurality of folding bar
221 sizes are identical；Identical size setting can conveniently adjust setting.The end setting of the junction of upper and lower side folding bar 221 is small
Ring 226, two small rings 226 are arranged in a crossed manner, realize mutually rotation；Locking structure is that screens is set to be recessed 228 and can on bridle catcher 1
The external loop diameter fallen into micro-pits is more than the elastic screens ring 227 of 1 size of bridle catcher.Screens recess 228 can set it is multiple, it is such
Setting can realize the purpose that filter size is adjusted according to patient size.Screens recess 228 is smaller for upper dimension, lower part ruler
The very little structure consistent with bridle catcher 1, such structure can ensure that barrier can not be had smoothly downwards when moving down screens ring 227.
One screens ring pressing structure of setting in casing, the pressing structure can push screens ring and the upper end circular ring structure to transport downwards for one
Dynamic throw-out collar 41,41 structure of throw-out collar are placed on bridle catcher, are connected one thereafter and are pushed away item 42.The respectively setting 4 of upper and lower side folding bar 221, this
Kind setting under the premise of stability is ensured, can ensure the validity of filtering.Setting drawing structure 43,43 front end of drawing structure
Setting drawing hook 44, drawing structure 43 pack up filtration at the end of being used for.
In use, lying in or being placed on line-hanging structure by long drag wire 3 first, filtration, bridle catcher 1 and push rod 5 are set
It is placed in casing 6；Seal wire first trip enters inferior caval vein designated position from upper arm vein or subclavian vein blood vessel, after pass through seal wire
Guiding the casing 6 with filtration pass into inferior caval vein designated position after, by push rod 5 control bridle catcher 1, slightly after
6 structure of casing is removed, filtration and bridle catcher 1 is made to deviate from from structure for conveying；After device to be filtered leaks out, push rod 5 is withdrawn from, then draw
Enter 227 pressing structure of screens ring, pushing it, such filter is set in designated position to stopping after suitable recessed position；
Finally by seal wire, 227 pressing structure of screens ring is withdrawn from vitro；The length of long drag wire 3 is finally adjusted, makes bridle catcher 1 and blood vessel
After direction is consistent, fixed exhausting line, and the processing of minimally invasive wound is done, complete the placement of filter.After device to be filtered completes filtering,
Drawing hook 44 is entered by casing 6, after by pulling hook 44 1 top of bridle catcher will be moved on screens ring 227, rear drawing hook
44 hook column filtrations pull up after filtration is taken in casing 6 while pull long drag wire 3 and be recovered to entire filter
In casing 6, after withdraw from casing 6, complete the use of entire filter.
A kind of 5 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to 3 outside of intravascular long drag wire；Line-hanging structure is set to for one
The long drag wire annulus 11 at 1 top of bridle catcher；Long drag wire 3 is lain on long drag wire annulus 11, and such setting can ensure to lead
The direction of wire drawing and the consistency of bridle catcher 1.The long drag wire 3 soft nylon wire strong for toughness；The setting of nylon wire can be protected
The intensity of line is demonstrate,proved, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.Before 6 structure of casing
End is set as slightly stereoplasm tube；That is the setting of casing 6 to chest section in navel to setting slightly stereoplasm tube after in vivo；After 6 structure of casing
After end i.e. merging in vivo slightly soft pipe is set as at upper arm or below clavicle again from chest to neck；Such setting can ensure
Navel keeps specific shape to chest section, prevents blood vessel caused by due to deformation from injuring, and ensures chest to neck again to upper
Structurally variable shape at arm or below clavicle, and ensure to change with body, and conveniently solid at upper arm or below clavicle
It is fixed.
Folding bar filtration 22 all connects among bridle catcher 1 for a plurality of upper and lower side and can mutually rotatable folding bar
221；It also sets up folding bar 221 and moves locking structure；Double medium filtration, a plurality of folding bar 221 in upper end are realized by the folding bar 221 of upper and lower side
Upper end, which is set, moves with one on annulus 222, and mobile annulus 222 can be moved up and down along bridle catcher 1, and lower end folding bar 221 is arranged on solid
Due on the disk 223 of 1 bottom of bridle catcher；Such setting can realize filtering by the way that the folding bar 221 of top is pushed to move down
The opening of device；And be a kind of adjustable filter, can be to meet the needs of more patient vessel's sizes.Every a plurality of folding bar
221 sizes are identical；Identical size setting can conveniently adjust setting.The end that folding bar 221 is intersected with lower end folding bar 221 in upper end
End setting micro-arc protrudes 224, and such setting can ensure not contact excessively with vascular wall, and vascular wall will not be formed again and hindered
Evil.The end of the junction of upper and lower side folding bar 221 sets small ring 226, and two small rings 226 are arranged in a crossed manner, realizes mutually rotation；The differential of the arc
Shape protrudes 224 and is arranged on small 226 front end of ring；Locking structure is that screens recess 228 is set on bridle catcher 1 and can fall into micro-pits
Interior external loop diameter is more than the elastic screens ring 227 of 1 size of bridle catcher.Screens recess 228 can set multiple, and such setting can be real
The purpose of filter size is now adjusted according to patient size.Screens recess 228 is smaller for upper dimension, lower dimension and bridle catcher
1 consistent structure, such structure can ensure that barrier can not be had smoothly downwards when moving down screens ring 227.It is set in casing
One screens ring pressing structure, the pressing structure can push the throw-out collar that screens ring and the upper end circular ring structure move downward for one
41,41 structure of throw-out collar is placed on bridle catcher, is connected one thereafter and is pushed away item 42.The respectively setting 6 of upper and lower side folding bar 221, such setting can
Under the premise of stability is ensured, to ensure the validity of filtering.Setting drawing structure 43,43 front end of drawing structure setting drawing
Hook 44, drawing structure 43 pack up filtration at the end of being used for
A kind of 6 inferior caval vein temporary filter (F.T.) of embodiment
A kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher 1 including lower part, which is characterized in that
Line-hanging structure on the bridle catcher 1 is set, a long drag wire 3, long 3 another end dissociative of drag wire are set at line-hanging structure；It is described
Long 3 outside setting 6 structure of casing of drag wire, one is also set up in casing 6 and is pushed away by pushing bridle catcher 1 by what filtration was released
Bar 5；The length of long drag wire 3 and casing 6 can ensure that long drag wire 3 is set in casing 6 and is set together with 6 rearmost end of casing
In vitro, and casing 6 and 3 other parts of long drag wire are set to 3 outside of intravascular long drag wire；Line-hanging structure is set to for one
The long drag wire annulus 11 at 1 top of bridle catcher；Long drag wire 3 is lain on long drag wire annulus 11, further long drag wire annulus
Setting of the oblique notch 12 for seal wire is also set up on the bridle catcher 1 of 11 lower sections.Such setting can ensure the side of drawing silk
To the consistency with bridle catcher 1.The long drag wire 3 soft nylon wire strong for toughness；The setting of nylon wire can ensure the strong of line
Degree, and can reduce the long period to the greatest extent and be set in vivo to the interference of patient activity.The front end of 6 structure of casing is set as
Slightly stereoplasm tube；That is the setting of casing 6 to chest section in navel to setting slightly stereoplasm tube after in vivo；The rear end of 6 structure of casing is placed in
After in vivo slightly soft pipe is set as at upper arm or below clavicle again from chest to neck；Such setting can ensure navel to chest
Mouth section keeps specific shape, prevents blood vessel caused by due to deformation from injuring, and guarantee chest is arrived again to neck at upper arm or lock
Structurally variable shape below bone ensures to change and change with body, and conveniently fixed at upper arm or below clavicle.
Filtration all connects among bridle catcher 1 for a plurality of upper and lower side and can mutually rotatable folding bar 221；Also
Folding bar 221 is set to move locking structure；Double medium filtration is realized by the folding bar 221 of upper and lower side, a plurality of 221 upper end of folding bar in upper end is set
It puts and is moved on annulus 222 with one, mobile annulus 222 can be moved up and down along bridle catcher 1, and lower end folding bar 221, which is arranged on, to be fixed on back
It puts away sports equipment on the disk 223 of 1 bottom；Such setting can realize beating for filter by the way that the folding bar 221 of top is pushed to move down
It opens；And be a kind of adjustable filter, can be to meet the needs of more patient vessel's sizes.Every a plurality of 221 ruler of folding bar
It is very little identical；Identical size setting can conveniently adjust setting.The end that folding bar 221 is intersected with lower end folding bar 221 in upper end is set
It puts micro-arc and protrudes 224, such setting can ensure not contact excessively with vascular wall, and vascular wall will not be formed again and injured.
In 221 middle part setting band curved strip 225 made of memory material of upper and lower side folding bar；Band curved strip 225 will not contact vessel boundary, this
Kind setting can increase the intensity of filtering.The direction with curved strip 225 in upper and lower side folding bar 221 is not quite identical；It is such this
It can further stop thrombus.
The direction with curved strip 225 in upper and lower side folding bar 221 is not quite identical；It is such this further to stop blood
Bolt.The end of the junction of upper and lower side folding bar 221 sets small ring 226, and two small rings 226 are arranged in a crossed manner, realizes mutually rotation；The differential of the arc
Shape protrudes 224 and is arranged on small 226 front end of ring；Locking structure is that screens recess 228 is set on bridle catcher 1 and can fall into micro-pits
Interior external loop diameter is more than the elastic screens ring 227 of 1 size of bridle catcher.Screens recess 228 can set multiple, and such setting can be real
The purpose of filter size is now adjusted according to patient size.Screens recess 228 is smaller for upper dimension, lower dimension and bridle catcher
1 consistent structure, such structure can ensure that barrier can not be had smoothly downwards when moving down screens ring 227.It is set in casing
One screens ring pressing structure, the pressing structure can push the throw-out collar that screens ring and the upper end circular ring structure move downward for one
41,41 structure of throw-out collar is placed on bridle catcher, is connected one thereafter and is pushed away item 42.The respectively setting 6 of upper and lower side folding bar 221, such setting can
Under the premise of stability is ensured, to ensure the validity of filtering.Setting drawing structure 43,43 front end of drawing structure setting drawing
Hook 44, drawing structure 43 pack up filtration at the end of being used for
The explanation of above-described embodiment is only intended to understand the present invention.It should be pointed out that for those of ordinary skill in the art
For, without departing from the principle of the present invention, several improvement can also be carried out to the present invention, these improvement will also fall into this
In invention scope of the claims.
Claims (10)
1. a kind of inferior caval vein temporary filter (F.T.), filtration and top bridle catcher (1) including lower part, which is characterized in that
Line-hanging structure on the bridle catcher (1) is set, a long drag wire (3), long drag wire (3) other end trip are set at line-hanging structure
From；Setting casing (6) structure on the outside of the long drag wire (3), one is also set up in casing (6) will by pushing bridle catcher (1)
The push rod (5) that filtration is released；The length of long drag wire (3) and casing (6) can ensure that long drag wire (3) is set to casing
(6) it is set in vitro in and together with casing (6) rearmost end, and casing (6) and long drag wire (3) other parts are set to blood vessel
It is interior.
2. inferior caval vein temporary filter (F.T.) according to claim 1, which is characterized in that the front end of described sleeve pipe (6) structure
It is set as slightly stereoplasm tube；That is casing (6) setting to chest section in navel to setting slightly stereoplasm tube after in vivo；Described sleeve pipe (6) is tied
After the rear end of structure i.e. merging in vivo slightly soft pipe is set as at upper arm again to neck from chest.
3. inferior caval vein temporary filter (F.T.) according to claim 1, which is characterized in that the line-hanging structure is a bridle catcher
(1) the oblique notch (12) on；Long drag wire (3) is lain on oblique notch (12).
4. inferior caval vein temporary filter (F.T.) according to claim 1, which is characterized in that the line-hanging structure is set to for one
Long drag wire annulus (11) at the top of bridle catcher (1)；Long drag wire (3) is lain on long drag wire annulus (11).
5. inferior caval vein temporary filter (F.T.) according to claim 1, which is characterized in that the filtration can be arbitrary
Filtration, wherein being preferably：The filtration is conical filtering structure (21) or spindle filtration (23)；It crosses
Filter structure has memory metal material preparation.
6. inferior caval vein temporary filter (F.T.) according to claim 5, which is characterized in that filtration is conical filtering knot
Bead cystic structures (7) or setting are set during structure (21), in conical filtering structure (21) each branch in end by each branch end
Hold the rubber ring structure (8) to link together.
7. inferior caval vein temporary filter (F.T.) according to claim 1, which is characterized in that the filtration is above and below a plurality of
End all connects among bridle catcher (1) and can mutually rotatable folding bar (221)；It is locked to also set up folding bar (221) movement
Structure；The a plurality of folding bar in upper end (221) the upper end setting is moved with one on annulus (222), and mobile annulus (222) can be along bridle catcher
(1) it moves up and down, lower end folding bar (221) is arranged on the disk (223) for being fixed on bridle catcher (1) bottom.
8. inferior caval vein temporary filter (F.T.) according to claim 7, which is characterized in that the upper and lower side folding bar (221)
The end of junction sets small ring (226), and two small rings (226) are arranged in a crossed manner, realizes mutually rotation.
9. inferior caval vein temporary filter (F.T.) according to claim 7, which is characterized in that the locking structure is in bridle catcher
(1) external loop diameter that screens is recessed (228) and can fall into micro-pits is set to be more than the elastic screens ring of bridle catcher (1) size on
(227)。
10. inferior caval vein temporary filter (F.T.) according to claim 7, which is characterized in that one card of setting in described sleeve pipe (6)
Position ring (227) pressing structure, the pressing structure for one can push screens ring (227) and the upper end circular ring structure moves downward
Throw-out collar (41), throw-out collar (41) structure are placed on bridle catcher (1), are connected one thereafter and are pushed away item (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434251.0A CN108210112B (en) | 2017-12-26 | 2017-12-26 | Inferior vena cava temporary filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711434251.0A CN108210112B (en) | 2017-12-26 | 2017-12-26 | Inferior vena cava temporary filter |
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| CN108210112A true CN108210112A (en) | 2018-06-29 |
| CN108210112B CN108210112B (en) | 2020-01-14 |
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| CN201711434251.0A Active CN108210112B (en) | 2017-12-26 | 2017-12-26 | Inferior vena cava temporary filter |
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|---|---|---|---|---|
| US5836968A (en) * | 1996-07-17 | 1998-11-17 | Nitinol Medical Technologies, Inc. | Removable embolus blood clot filter |
| US20120172654A1 (en) * | 2010-12-30 | 2012-07-05 | Cook Incorporated | Ventricular assist device |
| GB2488596A (en) * | 2011-03-04 | 2012-09-05 | Cook Medical Technologies Llc | Embolic filter deployed and withdrawn by inversion |
| CN102743241A (en) * | 2012-07-27 | 2012-10-24 | 首都医科大学宣武医院 | Novel deformable non-axial-flow vene cava filter |
| CN104546220A (en) * | 2013-10-16 | 2015-04-29 | 中国人民解放军总医院 | Recyclable blood vessel filter component |
| CN205251764U (en) * | 2015-12-14 | 2016-05-25 | 广东脉搏医疗科技有限公司 | Thrombus filter |
| CN206007409U (en) * | 2016-04-22 | 2017-03-15 | 上海形状记忆合金材料有限公司 | A kind of variable vein filter tool |
-
2017
- 2017-12-26 CN CN201711434251.0A patent/CN108210112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5836968A (en) * | 1996-07-17 | 1998-11-17 | Nitinol Medical Technologies, Inc. | Removable embolus blood clot filter |
| US20120172654A1 (en) * | 2010-12-30 | 2012-07-05 | Cook Incorporated | Ventricular assist device |
| GB2488596A (en) * | 2011-03-04 | 2012-09-05 | Cook Medical Technologies Llc | Embolic filter deployed and withdrawn by inversion |
| CN102743241A (en) * | 2012-07-27 | 2012-10-24 | 首都医科大学宣武医院 | Novel deformable non-axial-flow vene cava filter |
| CN104546220A (en) * | 2013-10-16 | 2015-04-29 | 中国人民解放军总医院 | Recyclable blood vessel filter component |
| CN205251764U (en) * | 2015-12-14 | 2016-05-25 | 广东脉搏医疗科技有限公司 | Thrombus filter |
| CN206007409U (en) * | 2016-04-22 | 2017-03-15 | 上海形状记忆合金材料有限公司 | A kind of variable vein filter tool |
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| Publication number | Publication date |
|---|---|
| CN108210112B (en) | 2020-01-14 |
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