CN107468373A - A kind of double release sheath vena cava filter release devices and release recovery method - Google Patents
A kind of double release sheath vena cava filter release devices and release recovery method Download PDFInfo
- Publication number
- CN107468373A CN107468373A CN201710750985.3A CN201710750985A CN107468373A CN 107468373 A CN107468373 A CN 107468373A CN 201710750985 A CN201710750985 A CN 201710750985A CN 107468373 A CN107468373 A CN 107468373A
- Authority
- CN
- China
- Prior art keywords
- release
- filter
- sheath
- push rod
- shell fragment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- A61F2/011—Instruments for their placement or removal
Abstract
The invention discloses double release sheath vena cava filter release devices and release recovery method, wherein device includes release sheath and guides push rod, the release sheath includes sheath in release, the release epitheca being socketed with it, it is described to guide push rod to include the putter grip set gradually, first push rod, second push rod, moving tube is socketed with first push rod, first push rod sets the first shell fragment of moving tube described in limited location close to one end of the putter grip, the moving tube compresses or discharged first shell fragment along its axial-movement, the described one end of first push rod away from the putter grip is provided with several along the second circumferentially disposed shell fragment of first push rod, the both ends of second shell fragment are respectively fixedly connected with first push rod and the moving tube.The present invention at least has the advantage that：Be applicable it is all it is double put double umbrella filters when taking type filter, the both sides singly to take the type to be discharged through stock, can realize filter off-position mistake or it is undesirable when recovery and secondary release.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of double release sheath vena cava filter release devices and release
Put back to receiving method.
Background technology
With.Pulmonary embolism (abbreviation pulmonary embolism pulmonary embolism, PE) is due to around DVT
Or the thrombus breaks loose of right cardiac cavity enters pulmonary circulation, pulmonary artery or its branch are blocked, and then trigger a series of with pulmonary circulatory function
Clinical pathology physiological change based on obstacle, serious meeting cause sudden death.Research shows, causes the embolus main source of PE generations
In the thrombus that limbs Deep venou or pelvic veins come off, the 60%~90% of embolus source is accounted for.It is possible thereby in renal vein opening
A filter is placed at place below horizontal, is intercepted the free embolus in blood, can effectively be prevented the generation of pulmonary embolism, mesh
The preceding technology is just constantly being applied to clinical treatment and is achieving very good effect.
It can be divided into according to the difference of thrombus filter RT in vivo：Permanent filter and recyclable filter.Forever
Property filter can only be placed forever, can not be taken out.But the type filter is for a long time it is possible that corresponding complication, as moved
Position, vena cave perforation, local thrombus are formed, inferior vena cava obstruction etc..Patient needs long-term use of anticoagulant simultaneously, and this is to actual
Using bringing significant limitation.Recyclable filter is to start popularization and application in 10 years in the past, and it can be within a certain period of time
(generally 3 months) takes out from internal, the shortcomings that so as to avoid Permanent implantation filter.
Have more than ten kinds of vena cava filter product both at home and abroad at present and be widely used in clinic.But its release system is all phase
Similar single release sheath release system, once filter discharges and finds to need to be filled with special recovery after off-position is undesirable
Put and discharged again after release system is reloaded into after being reclaimed, process is cumbersome and with high costs.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of double release sheath vena cava filter release devices and is released back into
Receiving method, be applicable it is all it is double put double umbrella filters when taking type filter, the both sides singly to take the type to be discharged through stock, can realize that above-mentioned filter exists
Off-position mistake or it is undesirable when recovery immediately and secondary release immediately.
A kind of double release sheath vena cava filter release devices of the present invention, including discharge sheath and be located in the release sheath
Guide push rod, it is described release sheath include release in sheath, with the release in sheath socket and can be with respect to the release of its axial-movement
Epitheca, the putter grip for guiding push rod to include setting gradually, the first push rod for pushing the filter, be arranged in it is described
Filter and the second push rod being play the guiding role to the filter, being socketed with first push rod can moving along its axial-movement
Pipe, first push rod is provided with close to one end of the putter grip can be along the spacing shifting of the first push rod radial motion
First shell fragment of dynamic pipe, the moving tube are compressed along its axial-movement or discharge first shell fragment, and first push rod is remote
One end of the putter grip is provided with several along the second circumferentially disposed shell fragment of first push rod, second shell fragment
Both ends are respectively fixedly connected with first push rod and the moving tube, and the moving tube stretches along its axial-movement or along its footpath
To the second shell fragment described in outside bending.
Further, it is provided with the lateral wall of the release epitheca for the orientation to the filter and dimension measurement
Mapping ring.
Further, the one end of the release epitheca is provided with the epitheca joint being coaxial therewith, the epitheca joint bag
Axially extending connecting cavity is included, is radially extended and penetrates the threaded connection hole of the epitheca joint surfaces externally and internally.
Further, in addition to one end extends to the connecting tube in the connecting cavity and being coaxial therewith, the connecting tube
The clamping slot coordinated with the threaded connection hole is provided with outer wall.
Further, in addition to locking stud, holding regulation circle handle, the screw thread that the locking stud includes setting gradually connect
The even threaded post of the threaded connection hole and the clamping termination extended in the clamping slot.
Further, the coaxial three-way connector in addition to the connecting tube, threeway described in sheath overcoat in the release
Connector, the internal diameter whorl of the connecting tube are connected with three-way connector to compress sheath in the release.
Further, the three-way connector is also communicated with two-port valve and Rule pressure coaxial with the three-way connector
Lid, Rule gland are connected with the loader for being coaxial therewith and being used to load the filter.
Further, the guide push rod wears the loader, Rule gland, three-way connector, connecting tube, outer successively
Sheath and release epitheca in sheath joint, release.
A kind of release recovery method based on described double release sheath vena cava filter release devices, comprises the following steps：
a：Push state：Second shell fragment pushes away to draw and refers to bar and push away initially in straight condition with the afterbody of the insertion filter
The dynamic filter motion；
b：Judging the filter, whether off-position is correct, is, then discharges successfully, no, then carries out step c；
c：Recovery state：Judge whether the filter is in complete release conditions, be then to carry out the first way of recycling；
It is no, then carry out second of way of recycling；The first way recovery includes：The locking stud is unclamped, drives the release
Epitheca carries out the recovery to filter, if the filter does not produce movement, directly the filter can be recycled to outside the release
In sheath；If the footpath of the filter produces movement, driving the second shell fragment described in the moving tube bending will to push against the filter
It retracts the release epitheca；Second of way of recycling includes：Directly drive the second shell fragment described in the moving tube bending
To push against the filter, the filter is retracted into sheath in the release.
By such scheme, the present invention at least has advantages below：The present invention is double release chambers, in filter off-position not
During preferable or off-position mistake, the secondary adjustment of filter and secondary release can be carried out immediately, without being returned by filter
Receiving apparatus discharged after reclaiming completely, shortens the operating time of doctor, reduces the pain sensation of patient, while expense
Also it is greatly lowered；By being provided with the first shell fragment and the second shell fragment, pass through moving tube and the routing motion of guide push rod, the first bullet
For piece to its position-limiting action of the moving tube, the second shell fragment is in straight condition to promote the filter, bending to lock filter, just
Recovery and adjustment position in filter.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the overall structure sectional view of the present invention；
Fig. 3 is that pushing away for the present invention draws finger bar structural representation；
Fig. 4 is the partial enlarged drawing at Fig. 3 A in the present invention；
Fig. 5 is the locking bolt structure schematic diagram of the present invention；
Fig. 6 is the connecting pipe structure sectional view of the present invention；
Fig. 7 is the connection diagram of present invention release epitheca and outer pin connector.
In the figures above：1st, sheath in release；2nd, epitheca is discharged；3rd, putter grip；4th, the first push rod；5th, the second push rod；6、
Moving tube；7th, the first shell fragment；8th, the second shell fragment；9th, mapping ring；10th, epitheca joint；11st, connecting cavity；12nd, threaded connection hole；13、
Connecting tube；14th, clamping slot；15th, circle handle is adjusted；16th, threaded post；17th, clamping termination；18th, three-way connector；19th, two-port valve；
20th, Rule gland；21st, loader.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
With reference to shown in Fig. 1 to Fig. 7, the invention discloses a kind of double release sheath vena cava filter release devices, including release
Sheath and the guide push rod being located in the release sheath.The release sheath includes sheath 1 in release, is socketed with sheath 1 in the release
And can be with respect to the release epitheca 2 of its axial-movement.In the present invention, sheath 1 and the release epitheca 2 are moved using straight line in the release
Flowing mode, release epitheca 2 can be greatly reduced patient incision is caused to damage in movement.The guide push rod includes setting gradually
Putter grip 3, the first push rod 4 for pushing the filter, be arranged in the filter and the filter play the guiding role
The second push rod 5.Being socketed with first push rod 4 can be along the moving tube 6 of its axial-movement, and first push rod 4 is close to institute
Stating one end of putter grip 3, be provided with can be along the first shell fragment 7 of the spacing moving tube 6 of the radial motion of the first push rod 4, institute
State moving tube 6 and compress or discharge first shell fragment 7 along its axial-movement；First push rod 4 is away from the putter grip 3
One end is provided with several and distinguished along the second circumferentially disposed shell fragment 8 of first push rod 4, the both ends of second shell fragment 8
It is fixedly connected with first push rod 4 and the moving tube 6, the moving tube 6 stretches or radially outside along its axial-movement
Second shell fragment 8 described in bending.At off-position：The moving tube 6 compresses first shell fragment 7, and second shell fragment 8 is drawn
Directly.By being provided with the first shell fragment 7 and second shell fragment 8, the first shell fragment 7 is to described its position-limiting action of moving tube 6, the second bullet
Piece 8 is in straight condition to promote the filter, bending state to be easy to recovery and the adjustment position of filter to lock filter.
The mapping ring 9 for the orientation to the filter and dimension measurement is provided with the lateral wall of the release epitheca 2,
By being provided with mapping ring 9, it is easy to doctor preferably to find preferable implantation position when being implanted into filter.The release epitheca 2
One end be provided with the epitheca joint 10 being coaxial therewith, the epitheca joint 10 includes axially extending connecting cavity 11, radially
Extend and penetrate the threaded connection hole 12 of the surfaces externally and internally of epitheca joint 10, the release epitheca 2 and the epitheca joint 10
Be formed in one setting.
Described device also includes one end and extends to the connecting tube 13 in the connecting cavity 11 and being coaxial therewith, the connecting tube
The clamping slot 14 coordinated with the threaded connection hole 12 is provided with 13 outer wall.Described device also includes locking stud, described
Locking stud includes holding regulation circle handle 15, the screw thread threaded post 16 of the threaded connection hole 12 and the extension in succession set gradually
Clamping termination 17 in the clamping slot 14.Described device also includes the three-way connector 18 coaxial with the connecting tube 13,
Three-way connector 18 described in the overcoat of sheath 1 in the release, the internal diameter whorl of the connecting tube 13 be connected with three-way connector 18 with
Compress sheath 1 in the release.The three-way connector 18 is also communicated with two-port valve 19 and coaxial with the three-way connector 18
Rule gland 20, Rule gland 20 are connected with the loader 21 for being coaxial therewith and being used to load the filter.The two-way
Valve 19 is managed by PU and is connected with the interference of three-way connector 18, during filter is implanted into, is played physiological saline injection and is made
The effect of shadow agent injection.The guide push rod wears the loader 21, Rule gland 20, three-way connector 18, connection successively
Pipe 13, epitheca joint 10, release in sheath 1 and release epitheca 2.
A kind of release recovery method based on described double release sheath vena cava filter release devices, comprises the following steps：
a：Push state：Second shell fragment 8 pushes away to draw and refers to bar and push away initially in straight condition with the afterbody of the insertion filter
The dynamic filter motion；
b：Judging the filter, whether off-position is correct, is, then discharges successfully, no, then carries out step c；
c：Recovery state：Judge whether the filter is in complete release conditions, be then to carry out the first way of recycling；
It is no, then carry out second of way of recycling；The first way recovery includes：The locking stud is unclamped, drives the release
Epitheca 2 carries out the recovery to filter, if the filter does not produce movement, directly the filter can be recycled to outside the release
In sheath 2；If the footpath of the filter produces movement, the second shell fragment 8 described in the bending of moving tube 6 is driven to push against the filter
Pull it back the release epitheca 2；Second of way of recycling includes：Directly drive second described in the bending of moving tube 6
Shell fragment 8 retracts sheath 1 in the release to push against the filter, by the filter.
Described above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is some improvement and
Modification, these improvement and modification also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of double release sheath vena cava filter release devices, including release sheath push away with the guide being located in the release sheath
Bar, it is characterised in that：The release sheath include sheath in release, with sheath socket in the release and can its axial-movement relatively release
Epitheca is put, the putter grip for guiding push rod to include setting gradually, the first push rod for pushing the filter, is arranged in institute
Filter and the second push rod being play the guiding role to the filter are stated, being socketed with first push rod can be along the shifting of its axial-movement
Dynamic pipe, first push rod is provided with close to one end of the putter grip can be spacing described along the first push rod radial motion
First shell fragment of moving tube, the moving tube are compressed along its axial-movement or discharge first shell fragment, and first push rod is remote
One end from the putter grip is provided with several along the second circumferentially disposed shell fragment of first push rod, second shell fragment
Both ends be respectively fixedly connected with first push rod and the moving tube, the moving tube stretched along its axial-movement or along its
Radially outward the second shell fragment described in bending.
2. double release sheath vena cava filter release devices according to claim 1, it is characterised in that：The release epitheca
The mapping ring for the orientation to the filter and dimension measurement is provided with lateral wall.
3. double release sheath vena cava filter release devices according to claim 1, it is characterised in that：The release epitheca
One end is provided with the epitheca joint being coaxial therewith, and the epitheca joint includes axially extending connecting cavity, radially extends and pass through
Lead to the threaded connection hole of the epitheca joint surfaces externally and internally.
4. double release sheath vena cava filter release devices according to claim 3, it is characterised in that：Also include one end to extend
To the connecting tube that the connecting cavity is interior and is coaxial therewith, it is provided with the outer wall of the connecting tube and the threaded connection hole coordinates
Clamping slot.
5. double release sheath vena cava filter release devices according to claim 4, it is characterised in that：Also include locking screw
Post, holding regulation circle handle, the screw thread that the locking stud includes setting gradually the threaded post of the threaded connection hole and prolong in succession
Extend the clamping termination in the clamping slot.
6. double release sheath vena cava filter release devices according to claim 4, it is characterised in that：Also include and the company
Take over coaxial three-way connector, three-way connector described in sheath overcoat in the release, the internal diameter whorl connection of the connecting tube
There is three-way connector to compress sheath in the release.
7. double release sheath vena cava filter release devices according to claim 6, it is characterised in that：The three-way connector
Two-port valve and Rule gland coaxial with the three-way connector are also communicated with, Rule gland, which is connected with, to be coaxial therewith and use
In the loader for loading the filter.
8. double release sheath vena cava filter release devices according to claim 7, it is characterised in that：It is described guide push rod according to
It is secondary wear the loader, Rule gland, three-way connector, connecting tube, epitheca joint, release in sheath and release epitheca.
9. a kind of double release sheath vena cava filter release devices based on as described in claim 1-8 is any are released back into debit
Method, comprise the following steps：
a：Push state：Second shell fragment pushes away initially in straight condition with the afterbody of the insertion filter and draws finger bar promotion institute
State filter motion；
b：Judging the filter, whether off-position is correct, is, then discharges successfully, no, then carries out step c；
c：Recovery state：Judge whether the filter is in complete release conditions, be then to carry out the first way of recycling；It is no, then
Carry out second of way of recycling；The first way recovery includes：The locking stud is unclamped, drives the release epitheca to enter
Recovery of the row to filter, if the filter does not produce movement, directly the filter can be recycled in the release epitheca；If
The footpath of the filter produces movement, then drives the second shell fragment described in the moving tube bending to pull it back institute to push against the filter
State release epitheca；Second of way of recycling includes：The second shell fragment described in the moving tube bending is directly driven to push against
Filter is stated, the filter is retracted into sheath in the release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750985.3A CN107468373A (en) | 2017-08-28 | 2017-08-28 | A kind of double release sheath vena cava filter release devices and release recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750985.3A CN107468373A (en) | 2017-08-28 | 2017-08-28 | A kind of double release sheath vena cava filter release devices and release recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107468373A true CN107468373A (en) | 2017-12-15 |
Family
ID=60604037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710750985.3A Pending CN107468373A (en) | 2017-08-28 | 2017-08-28 | A kind of double release sheath vena cava filter release devices and release recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107468373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662704A (en) * | 2021-10-25 | 2021-11-19 | 深圳麦普奇医疗科技有限公司 | Vena cava filter catcher |
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|---|---|---|---|---|
| US5486193A (en) * | 1992-01-22 | 1996-01-23 | C. R. Bard, Inc. | System for the percutaneous transluminal front-end loading delivery of a prosthetic occluder |
| WO1996001591A1 (en) * | 1994-07-08 | 1996-01-25 | Microvena Corporation | Method of forming medical devices; intravascular occlusion devices |
| US20030208227A1 (en) * | 2000-08-04 | 2003-11-06 | John Thomas | Temporary vascular filters and methods |
| JP2005270394A (en) * | 2004-03-25 | 2005-10-06 | Piolax Medical Device:Kk | Dilating assist of tubular organ treatment instrument |
| US20060184193A1 (en) * | 2005-02-16 | 2006-08-17 | Lowe Brian J | Filter with positioning and retrieval devices and methods |
| US20080269868A1 (en) * | 2007-04-25 | 2008-10-30 | Abbott Cardiovascular Systems Inc. | Stent delivery catheter system and method of implanting a self-expanding stent with embolic protection |
| US20090182370A1 (en) * | 2005-12-30 | 2009-07-16 | C.R. Bard, Inc. | Embolus blood clot filter removal system and method |
| CN105377157A (en) * | 2013-05-29 | 2016-03-02 | 托马斯·A·索斯 | Thrombus removal and intravascular distal embolic protection device |
| WO2017013187A1 (en) * | 2015-07-20 | 2017-01-26 | Tricares | Delivery apparatus for self-expanding medical device |
| CN208876907U (en) * | 2017-08-28 | 2019-05-21 | 科塞尔医疗科技（苏州）有限公司 | A kind of double release sheath vena cava filter release devices |
-
2017
- 2017-08-28 CN CN201710750985.3A patent/CN107468373A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486193A (en) * | 1992-01-22 | 1996-01-23 | C. R. Bard, Inc. | System for the percutaneous transluminal front-end loading delivery of a prosthetic occluder |
| WO1996001591A1 (en) * | 1994-07-08 | 1996-01-25 | Microvena Corporation | Method of forming medical devices; intravascular occlusion devices |
| US20030208227A1 (en) * | 2000-08-04 | 2003-11-06 | John Thomas | Temporary vascular filters and methods |
| JP2005270394A (en) * | 2004-03-25 | 2005-10-06 | Piolax Medical Device:Kk | Dilating assist of tubular organ treatment instrument |
| US20060184193A1 (en) * | 2005-02-16 | 2006-08-17 | Lowe Brian J | Filter with positioning and retrieval devices and methods |
| US20090182370A1 (en) * | 2005-12-30 | 2009-07-16 | C.R. Bard, Inc. | Embolus blood clot filter removal system and method |
| US20080269868A1 (en) * | 2007-04-25 | 2008-10-30 | Abbott Cardiovascular Systems Inc. | Stent delivery catheter system and method of implanting a self-expanding stent with embolic protection |
| CN105377157A (en) * | 2013-05-29 | 2016-03-02 | 托马斯·A·索斯 | Thrombus removal and intravascular distal embolic protection device |
| WO2017013187A1 (en) * | 2015-07-20 | 2017-01-26 | Tricares | Delivery apparatus for self-expanding medical device |
| CN208876907U (en) * | 2017-08-28 | 2019-05-21 | 科塞尔医疗科技（苏州）有限公司 | A kind of double release sheath vena cava filter release devices |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662704A (en) * | 2021-10-25 | 2021-11-19 | 深圳麦普奇医疗科技有限公司 | Vena cava filter catcher |
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