CN109350181A - A kind of taking thrombus device - Google Patents
A kind of taking thrombus device Download PDFInfo
- Publication number
- CN109350181A CN109350181A CN201811389461.7A CN201811389461A CN109350181A CN 109350181 A CN109350181 A CN 109350181A CN 201811389461 A CN201811389461 A CN 201811389461A CN 109350181 A CN109350181 A CN 109350181A
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- CN
- China
- Prior art keywords
- sheath
- conduit
- handle
- bolt bracket
- supporting shell
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to medical instruments field, in particular to a kind of taking thrombus device.Not the problem of not being suitable for peripheral blood vessel thrombus treatment which solve taking thrombus device existing in the prior art.Including guide head, take bolt bracket, conduit, sheath, handle and connector.Described that bolt bracket is taken to be socketed on outside conduit, conduit, which passes through, takes one end of bolt bracket rear tube to be connected with guide head.One sheath is set in conduit and takes outside bolt bracket, can be moved forward and backward in conduit；When sheath moves forward, bolt bracket is taken to be constrained in sheath, when sheath moves backward, bolt bracket is taken to expose outside sheath.It is cased with the other end of the conduit of sheath.It is pierced by handle, is connected with the connector for being fixed on handle outer end；The length of sheath is less than catheter length, and when conduit stretches out handle, a part of sheath is retained in handle；And be limited in handle, it can be moved forward and backward in a certain range.The regulating device that sheath can be made to be moved forward and backward is additionally provided on the handle.
Description
Technical field
The invention belongs to medical instruments field, in particular to a kind of taking thrombus device.
Background technique
With the improvement of people ' s living standards and aging of population, more and more people suffer from thrombotic diseases.Thrombotic
Disease is to be formed in situ by vascular thrombosis or embolus falls off a kind of disease caused by clog downstream blood vessel, have high disability rate and
Lethality is the big killer for threatening human health.
It mainly include clinically at present that thrombolysis and machinery take bolt to the treatment method of thrombus.Wherein thrombolysis be by vein or
Intra arterial injection rt-PA (recombinant tissue plasminogen activator, rt-
PA) thrombus is unimpeded to restore blood flow.But thromboembolism treatment has stringent limitation to time window, often in discovery thrombus
When had already passed by the thrombolysis best opportunity, therefore thrombolytic effect is undesirable.Recently the mechanical embolectomy occurred is a kind of based on warp
Skin interventional therapy takes bolt technology, and specific method is: under the monitoring of medical imaging equipment, through conduit by taking thrombus device
It is discharged into thrombus happening part, upon discharge, included takes bolt bracket chimeric with thrombus to taking thrombus device, withdraws later
Taking thrombus device, thrombus is taken out of.
Chinese invention patent application 201210148870.4,201210148890.1,201310056463.5,
The common feature of taking thrombus device described in 201310100143.5 and 201610270870.X is, for capturing thrombus
It takes bolt bracket to be all connected with a push-and-pull seal wire or push rod, and takes bolt bracket leading to realize by push-and-pull seal wire or push rod
Pipe or sheath in push with recall.However, due to take bolt bracket be self expandable reticular structure, push when can with constrain its outside
The conduit of diameter generates friction, frictional force is formed, and push-and-pull seal wire or the transferable power of push rod are limited, when the length for taking bolt bracket
When degree is more than threshold value, the push power being applied in push-and-pull seal wire or push rod can not offset the frictional force for taking bolt bracket, cause
It takes bolt bracket that can not push to predetermined position, therefore takes the length of bolt bracket severely limited to reduce frictional force, length
Usually 40mm be hereinafter, however, the thrombus length of the certain peripheral blood vessels of human body (such as lower limb vascular) may be more than 40mm, on
Entire thrombus can not be completely covered by stating taking thrombus device, therefore be not particularly suited for the treatment of peripheral blood vessel.
Based on the above reasons, a kind of novel taking thrombus device is clinically needed, efficiently can capture and take out
Peripheral blood vessel thrombus.
Summary of the invention
The present invention provides a kind of taking thrombus device, which solve existing skills aiming at the shortcomings of the prior art
Taking thrombus device present in art is not suitable for the problem of peripheral blood vessel thrombus treatment.
To achieve the above object, the present invention adopts the following technical scheme that, including guide head, take bolt bracket, conduit, sheath,
Handle and connector.
Described that bolt bracket is taken to be socketed on outside conduit, conduit passes through and takes one end (distal end of conduit) of bolt bracket rear tube and lead
It is connected to head.
One sheath is set in conduit and takes outside bolt bracket, can be moved forward and backward in conduit；When sheath moves forward, bolt bracket is taken
It is constrained in sheath, when sheath moves backward, bolt bracket is taken to expose outside sheath.
Be cased with the conduit of sheath the other end (proximal end of conduit) be pierced by handle, with the connector phase that is fixed on handle outer end
Even；The length of sheath is less than catheter length, and when conduit stretches out handle, a part of sheath is retained in handle；And it is limited in hand
In handle, it can be moved forward and backward in a certain range.
The regulating device that sheath can be made to be moved forward and backward is additionally provided on the handle.
As a preferred solution of the present invention, the connector and conduit are fixedly linked by bonding mode.
As another preferred embodiment of the invention, described take is provided with visual development mark under X-ray on bolt bracket
Note.
As another preferred embodiment of the invention, bolt bracket is taken to be connected by heat-shrink tube with conduit.
It as another preferred embodiment of the invention, takes bolt bracket under no restrained condition, is in automatic expanded condition.
As another preferred embodiment of the invention, the conduit is single-layer tubular structure comprising guidewire lumen.
As another preferred embodiment of the invention, the sheath is three-layer pipe shape structure, and internal layer and outer layer are polymerization
Nitride layer, middle layer are wire sheathing, and the distal end of sheath is provided with developing mark.
As another preferred embodiment of the invention, the handle includes two parts that clamping connection is integral: stress
Eliminate pipe and supporting shell；The conduit for being cased with sheath sequentially passes through stress elimination pipe and supporting shell from front to back, and fixes with connector
It is pierced by after being connected by supporting shell proximal end；The regulating device includes small one and large one two idler wheel of coaxial arrangement, wherein canine tooth wheel portion
Divide and is exposed to outside supporting shell；Regulating device further includes two gears for being set in supporting shell, being arranged in sheath two sides, two gear phases
Pair and set, a gear is set to sheath side, and another gear is set to the sheath other side；Two gears are by being set to outside sheath
Rack gear is connected by meshing transmission with sheath；Trundle is meshed with a two gears gear therein；Rotation big roller manually, big roller
It drives coaxially connected trundle to rotate, and then drives and rotated with trundle meshed gears, then by engaging with the gear
Rack gear realizes that sheath is moved forward or rearward.
As another preferred embodiment of the invention, the stress elimination pipe is pyramidal structure, to prevent conduit and sheath
Bending or damage occur in use for pipe；And limit casing is provided in supporting shell, limit casing lateral direction penetrating support
Shell；Be cased with sheath conduit pass through limit casing, and in sheath pipe outer wall, the side of rack gear end be provided with protrusion limiting block
Block, when being moved forward and backward in limit casing, limited block plays the role of limiting sheath sheath.
As another preferred embodiment of the invention, it is additionally provided with ejecting mechanism in the supporting shell, the ejecting mechanism packet
Include screw rod；Screw hole is provided in supporting shell, which is threadedly coupled by screw hole with supporting shell and screw rod is perpendicular to sheath, works as spiral shell
When bar is along screw hole precession supporting shell, screw rod withstands sheath side wall, plays the mobile effect of limitation sheath.
Beneficial effect of the present invention compared with prior art.
The present invention can enable length that bolt bracket is taken smoothly to reach diseased region, reduce during taking bolt because taking bolt stent length
The risk that deficiency causes thrombus to be broken.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 is the structural schematic diagram provided by the invention when pin device being taken to be in squeezed state.
Fig. 2 is the schematic cross-section provided by the invention for taking pin device.
Fig. 3 is the structural schematic diagram provided by the invention when pin device being taken to be in deployed condition.
Fig. 4 takes the structural schematic diagram that bolt bracket is taken in pin device to be provided by the invention.
Fig. 5 takes the schematic diagram that bolt bracket Yu sheath junction are taken in pin device to be provided by the invention.
Fig. 6 is the structural schematic diagram provided by the invention for taking sheath in pin device.
Fig. 7 is the schematic cross-section provided by the invention for taking sheath in pin device.
Fig. 8 is the structural schematic diagram provided by the invention for taking handle in pin device.
Fig. 9 is the structural schematic diagram provided by the invention for taking limit casing in pin device.
Figure 10 is the schematic cross-section provided by the invention for taking limit casing in pin device.
In figure, 1 be guide head, 2 for take bolt bracket, 3 be conduit, 4 be sheath, 5 be handle, 6 be connector, 21 to take bolt branch
Frame ontology, 22 for take bolt developing mark, 31 be catheter body, 32 be guidewire lumen, 33 be heat-shrink tube, 41 be internal layer, 42 be middle layer,
43 it is outer layer, 44 be sheath developing mark, 45 be rack gear, 46 be limited block, 51 be stress elimination pipe, 52 is supporting shell, 53
It is ejecting mechanism for limit casing, 54,55 be idler wheel, 56 is gear.
Specific embodiment
For convenience of description, heretofore described " distal end " finger device tool is leaned on far from operator one end, " proximal end " the finger device tool
Proximal operator one end.
As Figure 1-10 shows, the present invention includes guide head 1, takes bolt bracket 2, conduit 3, sheath 4, handle 5 and connector 6.
Described that bolt bracket 2 is taken to be socketed on outside conduit 3, conduit 3 passes through and takes one end of 2 rear tube 3 of bolt bracket and 1 phase of guide head
Even.
One sheath 4 is set in conduit 3 and takes outside bolt bracket 2, can be moved forward and backward in conduit 3；When sheath 4 moves forward, take
Bolt bracket 2 is constrained in sheath 4, when sheath 4 moves backward, bolt bracket 2 is taken to expose outside sheath 4.
The other end for being cased with the conduit 3 of sheath 4 is pierced by handle 5, is connected with the connector 6 for being fixed on 5 outer end of handle；Sheath 4
Length be less than 3 length of conduit, conduit 3 stretch out handle 5 when, a part of sheath 4 is retained in handle 5.And it is limited in handle 5
It is interior, can be moved forward and backward in a certain range in handle 5.
The regulating device that sheath 4 can be made to be moved forward and backward is additionally provided on the handle 5.
As a preferred solution of the present invention, the connector 6 is fixedly linked with conduit 3.And a part cladding of connector 6
In in handle 5.
As another preferred embodiment of the invention, described take is provided with visual development mark under X-ray on bolt bracket 2
Remember (taking bolt developing mark 22).
As another preferred embodiment of the invention, bolt bracket 2 is taken to be connected by heat-shrink tube 33 with catheter body 31.
It as another preferred embodiment of the invention, takes bolt bracket 2 under no restrained condition, is in automatic expanded condition.
As another preferred embodiment of the invention, the conduit 3 is single-layer tubular structure comprising guidewire lumen 32.
As another preferred embodiment of the invention, the sheath 4 is three-layer pipe shape structure, and internal layer and outer layer are polymerization
Nitride layer, middle layer are wire sheathing, and the distal end of sheath 4 is provided with developing mark (sheath developing mark 44).
As another preferred embodiment of the invention, the handle 5 includes two parts that clamping connection is integral: stress
Eliminate pipe 51 and supporting shell 52；The conduit 3 for being cased with sheath 4 sequentially passes through stress elimination pipe 51 and supporting shell 52 from front to back,
And it is pierced by by 52 proximal end of supporting shell；The regulating device includes small one and large one two idler wheel 55 of coaxial arrangement, wherein gear wheel
56 parts are exposed to outside supporting shell 52；Regulating device further includes two teeth for being set in supporting shell 52, being arranged in 4 two sides of sheath
Wheel 56, two gears 56 are opposite and set, and a gear 56 is set to 4 side of sheath, and another gear 56 is set to 4 other side of sheath；Two
Gear 56 is connected by meshing transmission by the rack gear 45 being set to outside sheath 4 with sheath 4；Trundle 55 and two gears 56 therein one
Gear 56 is meshed；Rotation big roller 55 manually, big roller 55 drives coaxially connected trundle 55 rotate, so drive with it is small
The rotation of 55 meshed gears 56 of idler wheel, then the rack gear 45 by engaging with the gear 56 realize that sheath 4 is moved forward or rearward.
As another preferred embodiment of the invention, the stress elimination pipe 51 is pyramidal structure, to prevent 3 He of conduit
Sheath 4 occurs to bend in use or damage.
As another preferred embodiment of the invention, it is provided with limit casing 53 in the supporting shell 52, the limit casing
53 lateral direction penetrating supporting shells 52；The conduit 3 for being cased with sheath 4 passes through limit casing 53, and on 4 outer wall of sheath, rack gear 45 end
Side is provided with the limited block 46 of protrusion, and for sheath 4 when being moved forward and backward in limit casing 53, limited block 46, which plays, makes sheath
The effect of 4 limits.
As another preferred embodiment of the invention, it is additionally provided with ejecting mechanism 54 in the supporting shell 52, the ejector
Structure 54 includes screw rod；It is provided with screw hole in supporting shell 52, which is threadedly coupled by screw hole with supporting shell 52 and screw rod hangs down
Directly in sheath, when screw rod is along screw hole precession supporting shell 52, screw rod withstands sheath side wall, plays the mobile effect of limitation sheath.
Screw rod, the depth of adjusting screw rod precession supporting shell 52 are rotated along screw hole direction, so that screw rod is held out against in sheath or far from sheath.
More specifically, the ontology 21 for taking bolt bracket 2 is tube network structure, and distal end is open, and proximal end is spiral shape, and
It is connected by heat-shrink tube 33 with catheter body 31.Take bolt bracket 2 it is compressible enter sheath 4 in, and can be in no external constraint
Automatic expansion.Heat-shrink tube 33 is visual under X-ray containing development ingredient.
Conduit 3 is single-layer tubular structure, including catheter body 31, guidewire lumen 32 and heat-shrink tube 33, wherein clinically commonly using
Seal wire can be travelled freely in guidewire lumen 32.
Sheath 4 is three-layer pipe shape structure, and internal layer 41 and outer layer 43 are polymeric layer, and middle layer 42 is wire sheathing,
Distal end has sheath developing mark 44, and proximal band has rack gear 45 and limited block 46.4 sets of sheath is in conduit 3 and takes bolt bracket 2
On, 4 distal end of sheath is adjacent with guide head 1.
Supporting shell 52 is made of macromolecule polymer material, preferably polyvinyl chloride (PVC), can bear some strength
Operation.Limit casing 53 can limit the moving range of rack gear 42 by blocking the limited block 46 in sheath 4, make taking thrombus
Device is unlikely to enable rack gear 42 beyond scheduled moving range in use.
Ejecting mechanism 54 is helicitic texture, and precession ejecting mechanism 54 can lock the rolling of idler wheel 55, screws out ejecting mechanism
54 can restore the rolling of idler wheel 55.Operated roller 55 can be such that gear 56 rolls round about, and gear 56 is nibbled with 42 phase of rack gear
Connection is closed, keeps rolling wheel and rack rotating direction identical.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of taking thrombus device, which is characterized in that including guide head, take bolt bracket, conduit, sheath, handle and connector；
Described that bolt bracket is taken to be socketed on outside conduit, conduit, which passes through, takes one end of bolt bracket rear tube to be connected with guide head；
One sheath is set in conduit and takes outside bolt bracket, can be moved forward and backward in conduit；When sheath moves forward, take bolt bracket by about
Beam when sheath moves backward, takes bolt bracket to expose outside sheath in sheath；
The other end for being cased with the conduit of sheath is pierced by handle, is connected with the connector for being fixed on handle outer end；The length of sheath is less than
Catheter length, when conduit stretches out handle, a part of sheath is retained in handle；And be limited in handle, it can be in a certain range
Interior back-and-forth motion；
The regulating device that sheath can be made to be moved forward and backward is additionally provided on the handle.
2. a kind of taking thrombus device according to claim 1, it is characterised in that: the connector and conduit pass through bonding side
Formula is fixedly linked.
3. a kind of taking thrombus device according to claim 1, it is characterised in that: described take is provided on bolt bracket in X
Visual developing mark under ray.
4. a kind of taking thrombus device according to claim 1, it is characterised in that: bolt bracket is taken to pass through heat-shrink tube and conduit
It is connected.
5. a kind of taking thrombus device according to claim 1, it is characterised in that: take bolt bracket under no restrained condition,
In automatic expanded condition.
6. a kind of taking thrombus device according to claim 1, it is characterised in that: the conduit is single-layer tubular structure,
It includes guidewire lumen.
7. a kind of taking thrombus device according to claim 1, it is characterised in that: the sheath is three-layer pipe shape structure,
Its internal layer and outer layer are polymeric layer, and middle layer is wire sheathing, and the distal end of sheath is provided with developing mark.
8. a kind of taking thrombus device according to claim 1, it is characterised in that: the handle includes that clamping is connected as one
Whole two parts: stress elimination pipe and supporting shell；The conduit for being cased with sheath sequentially passes through stress elimination pipe and branch from front to back
Shell is supportted, and is pierced by after being fixedly linked with connector by supporting shell proximal end；The regulating device include coaxial arrangement small one and large one two
Idler wheel, wherein gear wheel part is exposed to outside supporting shell；Regulating device further includes being set in supporting shell, being arranged in sheath two
Two gears of side, two gears are opposite and set, and a gear is set to sheath side, and another gear is set to the sheath other side；Two teeth
Wheel is connected by meshing transmission by the rack gear being set to outside sheath with sheath；Trundle is meshed with a two gears gear therein；
Rotation big roller, big roller drive coaxially connected trundle to rotate manually, and then drive and rotate with trundle meshed gears,
Realize that sheath is moved forward or rearward by the rack gear engaged with the gear again.
9. a kind of taking thrombus device according to claim 8, it is characterised in that: the stress elimination pipe is taper knot
Structure, to prevent conduit and sheath from occurring to bend or damage in use；And limit casing is provided in supporting shell, the limit
Position casing lateral direction penetrating supporting shell；The conduit for being cased with sheath passes through limit casing, and in sheath pipe outer wall, the side of rack gear end sets
It is equipped with the limited block of protrusion, when being moved forward and backward in limit casing, limited block plays the role of limiting sheath sheath.
10. a kind of taking thrombus device according to claim 9, it is characterised in that: be additionally provided with top in the supporting shell
Mechanism out, the ejecting mechanism include screw rod；Screw hole is provided in supporting shell, the screw rod be threadedly coupled with supporting shell by screw hole and
Screw rod is perpendicular to sheath, and when screw rod is along screw hole precession supporting shell, screw rod withstands sheath side wall, plays the mobile work of limitation sheath
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389461.7A CN109350181A (en) | 2018-11-21 | 2018-11-21 | A kind of taking thrombus device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389461.7A CN109350181A (en) | 2018-11-21 | 2018-11-21 | A kind of taking thrombus device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109350181A true CN109350181A (en) | 2019-02-19 |
Family
ID=65332570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389461.7A Pending CN109350181A (en) | 2018-11-21 | 2018-11-21 | A kind of taking thrombus device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109350181A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481265A (en) * | 2020-05-26 | 2020-08-04 | 沈阳新智源医疗用品有限公司 | Quick-exchange type blood vessel thrombus removal device |
| CN114569235A (en) * | 2022-03-11 | 2022-06-03 | 四川大学 | Liver cancer portal vein cancer embolus capturing device |
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| CN107137125A (en) * | 2017-06-20 | 2017-09-08 | 微创神通医疗科技（上海）有限公司 | Take bolt support and take pin device |
| CN107233122A (en) * | 2017-05-08 | 2017-10-10 | 上海形状记忆合金材料有限公司 | A kind of polydisc takes bolt device and its conveying device, carrying method |
| CN209220420U (en) * | 2018-11-21 | 2019-08-09 | 中国医科大学 | Taking thrombus device |
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| US20050059993A1 (en) * | 2003-09-17 | 2005-03-17 | Kamal Ramzipoor | Embolectomy device |
| CN103417257A (en) * | 2012-05-14 | 2013-12-04 | 上海微创医疗器械（集团）有限公司 | Intracranial vascular thrombus removal equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111481265A (en) * | 2020-05-26 | 2020-08-04 | 沈阳新智源医疗用品有限公司 | Quick-exchange type blood vessel thrombus removal device |
| CN114569235A (en) * | 2022-03-11 | 2022-06-03 | 四川大学 | Liver cancer portal vein cancer embolus capturing device |
| CN114569235B (en) * | 2022-03-11 | 2023-05-16 | 四川大学 | Hepatic carcinoma portal vein cancer suppository capturing device |
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