CN207520180U - One kind takes bolt stent and thrombus withdrawing device - Google Patents
One kind takes bolt stent and thrombus withdrawing device Download PDFInfo
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- CN207520180U CN207520180U CN201720507634.5U CN201720507634U CN207520180U CN 207520180 U CN207520180 U CN 207520180U CN 201720507634 U CN201720507634 U CN 201720507634U CN 207520180 U CN207520180 U CN 207520180U
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- thrombus
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- 208000007536 Thrombosis Diseases 0.000 title claims abstract description 34
- 238000011161 development Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 9
- 230000002792 vascular Effects 0.000 abstract description 7
- 230000000638 stimulation Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 208000006011 Stroke Diseases 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 206010008190 Cerebrovascular accident Diseases 0.000 description 5
- 208000032382 Ischaemic stroke Diseases 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 206010033799 Paralysis Diseases 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 3
- 230000002490 cerebral effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 230000002537 thrombolytic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002008 hemorrhagic effect Effects 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 238000002601 radiography Methods 0.000 description 2
- 206010008092 Cerebral artery thrombosis Diseases 0.000 description 1
- 206010059109 Cerebral vasoconstriction Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000005392 Spasm Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000005013 brain tissue Anatomy 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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- 229910003460 diamond Inorganic materials 0.000 description 1
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- 238000009730 filament winding Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007917 intracranial administration Methods 0.000 description 1
- 208000001286 intracranial vasospasm Diseases 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 230000000302 ischemic effect Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- 231100000216 vascular lesion Toxicity 0.000 description 1
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Abstract
The utility model is related to the field of medical instrument technology, more particularly to a kind of thrombus withdrawing device for taking bolt stent and bolt stent is taken with this, first, the design that bolt stent is taken to be arranged alternately in effective active section using the size mesh of the first closed loop net unit and the second closed loop net unit, wherein, small mesh has higher radial support power, it can be anchored vascular wall and embedded thrombus rapidly, increase the stability of thrombus capture, reduce the possibility of thrombus escape, the radial support power of big mesh is weaker, reduces the excessive stimulation to vascular wall, avoids vasopasm；Secondly, the cone cylinder structure design in bolt mount proximal end region is taken, remote area thrombus when withdrawing can be effectively made up and be displaced；Finally, the first closed loop net unit and the second closed loop net unit for taking bolt rack far end region are made of sine wave bar, effectively increase the compliance and adherence quality of rack body.
Description
Technical field
The utility model is related to the field of medical instrument technology more particularly to a kind of take bolt stent and take bolt stent with this
Thrombus withdrawing device.
Background technology
Palsy is also known as apoplexy, and cerebral apoplexy is one group using brain tissue ischemia and heamorrhagic lesions symptom as main clinical manifestation
Acute cerebrovascular diseases, because it has the characteristics that high incidence, high mortality, high disability rate, high relapse rate and high financial burden,
Seriously endanger public life and health and quality of life.The incidence of China's cerebral apoplexy is just in annual 8.7% speed at present
It rises, China becomes the 1st cause of death every year because the number of Stroke Death has been more than tumour and angiocardiopathy.
Palsy is divided into ischemic cerebral apoplexy and two kinds of hemorrhagic apoplexy, wherein cerebral arterial thrombosis accounted for 70% to
80%.In the patient that Ischemic Stroke occurs, the consequence caused by the intracranial vessel occlusion as caused by a variety of causes is most tight
Weight, is the difficult point for the treatment of all the time, and current therapy includes intravenous pharmacy thrombolysis, artery medicine thrombolysis, intravascular machine
Tool takes bolt and several method to be used in combination.Artery and vein thrombolysis is the conventional method of acute ischemic stroke treatment, but this
Method requires height for therapeutic time window, and strict demand patient idiopathy rushes to hospital in 3~4.5 hours and receives associated treatment,
Also there are many restrictions to drug, and low for the vessel occlusion induced Acute Ischemic Stroke recanalization rate of most serious.
Artery machinery takes pin device to obtain extensive concern because of having the advantages that following many：Quickly lead to again, more
Low hemorrhagic conversion rate and palsy intervention time window can extend.For the acute ischemic stroke blood vessel caused by vessel occlusion again
It is connected with satisfactory clinical effectiveness.United States food and drag administration (Food and Drug Administration,
FDA Merci Retrieval (2004) and Penumbra Stroke Systems (2008)) are had approved as the first generation
Machinery takes pin device.
But at present for machinery takes pin device, problems are still faced during bolt is taken：As current takes bolt to fill
The working portion put effectively prevent the design of thrombus breaks loose without design, and the thrombus during bolt is taken is caused easily to come off；Take bolt
The compliance of device is all relatively poor, it is impossible to and it is well adherent with the blood vessel of encephalic complicated bend, thrombus is caused easily to come off, and hold
Easily make the cerebrovascular that spasm occur；It is all only to design single development point to take pin device, can not judge in art the release of stent with
Expansion status is unfavorable for operating during surgical.
Utility model content
The purpose of this utility model is to provide one kind to take bolt stent, passes through the friendship of the small mesh and big mesh of remote area
Mistake design, solves when the prior art arrests thrombus that radial support power is smaller, and thrombus holds caducous when rack body is withdrawn
Problem.
A further object of the utility model is to provide a kind of with the above-mentioned thrombus withdrawing device for taking bolt stent.
For this purpose, the utility model uses following technical scheme：
One kind takes bolt stent, includes successively including the circumferential rack body expanded self, the rack body along its longitudinal axis
The remote area of connection and the proximal end region being connected with push rod, the remote area include the first closed loop net unit and second
Closed loop net unit, multiple first closed loop net units connect to form tube-in-tube structure with multiple second closed loop net units, institute
Proximal end region is stated in cone cylinder structure, the mesh of the first closed loop net unit is less than the mesh of the second closed loop net unit.
Preferably, multiple first closed loop net units connect to be formed clockwise with multiple second closed loop net units
Or counter-clockwise helical tube-in-tube structure.
Preferably, along the hand of helix of screw sheel structure, the single first closed loop net unit with it is single described
Second closed loop net unit is in be intervally arranged.
Preferably, along the axis direction of screw sheel structure, single first closed loop net unit and double second closed loop net
Unit is in be intervally arranged.
Preferably, along the axis direction of screw sheel structure, double first closed loop net unit and single second closed loop net
Unit is in be intervally arranged.
Preferably, along the circumferential direction of screw sheel structure, single first closed loop net unit and single second closed loop net
Unit interval is arranged.
Preferably, along the circumferential direction of screw sheel structure, double first closed loop net unit and single second closed loop net
Unit interval is arranged.
Preferably, the first closed loop net unit include two parallel sinusoidal long wave bars and be connected to it is described just
The head end of the chord length wave bar sinusoidal shortwave bar parallel with the two of tail end, two sinusoidal long wave bars and two sinusoidal shortwave bars enclose
Into class quadrilateral structure；The second closed loop net unit includes two parallel sinusoidal long wave bars, is connected to along its length just
Connection wave bar on chord length wave bar one end is parallel be connected to the sinusoidal long wave bar and connect wave bar two of both ends
Sinusoidal shortwave bar, two sinusoidal long wave bars, two sinusoidal shortwave bars and two connection wave bars enclose class hexagonal structure.
Preferably, the proximal end region is oblique cone cylindrical structure, and the vertex of oblique cone cylindrical structure to base
The extended line of shortest sideline and push rod coincides, and proximal end region caliber when withdrawing is avoided to become smaller to form the gradient.
A kind of thrombus withdrawing device, including taking bolt stent, the proximal end region for taking bolt stent described in any of the above item
By fettering point connection push rod, the outer cover of the push rod, which is equipped with, can will take bolt stent to be pressed into the microtubular in it, described
Microtubular is connect by microtubular connector with importing sheath；Development structure is also distributed in described take on bolt stent.
The beneficial effects of the utility model：
It is provided by the utility model to take bolt stent, first, closed in effective active section using the first closed loop net unit and second
The design that the size mesh of ring-main unit is arranged alternately, wherein, small mesh has higher radial support power, can be anchored rapidly
Firmly vascular wall and embedded thrombus increase the stability of thrombus capture, reduce the possibility of thrombus escape, the radial direction branch of big mesh
Support force is weaker, reduces the excessive stimulation to vascular wall, avoids vasopasm；Secondly, the cone cylinder structure design of proximal end region, energy
Enough remote area thrombus when withdrawing effectively is made up to be displaced；Finally, the first closed loop net unit and the second closed loop net unit are equal
It is made of sine wave bar, effectively increases the compliance and adherence quality of rack body.
Description of the drawings
Fig. 1 is the structure diagram one for taking bolt stent that the utility model embodiment one provides；
Fig. 2 is the structure diagram two for taking bolt stent that the utility model embodiment one provides；
Fig. 3 is the structure diagram for the second closed loop net unit that the utility model embodiment one provides；
Fig. 4 is the structure diagram one for taking bolt stent that the utility model embodiment two provides；
Fig. 5 is the structure diagram two for taking bolt stent that the utility model embodiment two provides；
Fig. 6 is the structure diagram one for taking bolt stent that the utility model embodiment three provides；
Fig. 7 is the structure diagram two for taking bolt stent that the utility model embodiment three provides；
Fig. 8 is the structure diagram one of thrombus withdrawing device provided by the utility model；
Fig. 9 is the structure diagram two of thrombus withdrawing device provided by the utility model.
In figure：
100- rack bodies；110- remote areas；120- proximal end regions；111- the first closed loop net units；112- second is closed
Ring-main unit；113- sine long wave bars；114- sine shortwave bars；115- connection wave bars；
200- push rod；400- imports sheath；500- microtubulars；600- fetters point.
Specific embodiment
The technical issues of to solve the utility model, the technical solution used and the technique effect reached are clearer,
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.For ease of description,
It is described below and has used term " proximal end " and " distal end ", wherein " proximal end " refers to, close to one end of operating side, distally referring to
One end far from operating side.
Embodiment one
The utility model provides one kind and takes bolt stent, and Fig. 1 to Fig. 3 shows embodiment one, including circumferential direction along its longitudinal axis certainly
The rack body 100 of body expansion, rack body 100 include sequentially connected remote area 110 and are connected with push rod 200
Proximal end region 120, wherein, remote area 110 is effective active section of rack body 100, and remote area 110 includes the first closed loop
111 and second closed loop net unit 112 of net unit, multiple first closed loop net units 111 and multiple second closed loop net units 112 connect
Form tube-in-tube structure, it is preferred that multiple first closed loop net units 111 and the connection of multiple second closed loop net units 112 form up time
Needle or counter-clockwise helical tube-in-tube structure.
In the present embodiment, referring to Fig. 2, along the hand of helix of screw sheel structure, single first closed loop net unit 111
It is in be intervally arranged with single second closed loop net unit 112.
The mesh of first closed loop net unit 111 is less than the mesh of the second closed loop net unit 112, therefore, the first closed loop net list
The radial support power of member 111 is more than the radial support power of the second closed loop net unit 112.Diseased region is reached in rack body 100
Afterwards, rack body 100 is released out of microtubular, and the first closed loop net unit 111 has higher radial support power, can rapid anchor
Surely vascular wall and embedded thrombus are lived, increases the stability of thrombus capture, reduces the possibility of thrombus escape, the second closed loop net list
The weaker radial support power of member 112 is to reduce the excessive stimulation to vascular wall, avoid vasopasm.
The structure of closed loop net unit can be common mesh-shape closing structure, the shape of mesh can be circle, diamond shape,
The shapes such as hexagon, in the specific implementation, in order to further increase the compliance and patch of the one-piece auger structure of rack body 100
Wall, referring to Fig. 2 and Fig. 3, the first closed loop net unit 111 includes two parallel sinusoidal long wave bars 113 and is connected to just
The head end of the chord length wave bar 113 sinusoidal shortwave bar 114 parallel with the two of tail end, two sinusoidal long wave bars 113 and two sines
Shortwave bar 114 encloses class quadrilateral structure；Second closed loop net unit 112 includes two parallel sinusoidal long wave bars 113, along length
The connection wave bar 115 and be connected to sinusoidal long wave bar 113 and connection wave that degree direction is connected on sinusoidal 113 one end of long wave bar
Two parallel sinusoidal shortwave bars 114 at the both ends of bar 115, two sinusoidal sinusoidal shortwave bars 114 and two of 113, two, long wave bar
A connection wave bar 115 encloses class hexagonal structure.The structure of first closed loop net unit 111 and the second closed loop net unit 112 is set
Meter, effectively increases the compliance of rack body 100, can reduce the stimulation to blood vessel, reduce cerebrovascular spasm.
In addition, proximal end region 120 is during withdrawing in order to prevent, it is whole because rack body 100 is influenced by power is withdrawn
Caliber becomes smaller or twists together, and proximal end region 120 is designed as cone cylinder structure, it is preferred that proximal end region 120 is oblique cone cartridge type knot
Structure, and the vertex of oblique cone cylindrical structure coincides to the shortest sideline on base and the extended line of push rod, to form the gradient
The caliber when withdrawing of proximal end region 120 is avoided to become smaller.The slope design of oblique cone cylindrical structure, which can be obstructed effectively, withdraws power transmission
To the circumferential direction of entire rack body 100, so as to avoid thrombus caducous phenomenon during being withdrawn.Meanwhile oblique cone
The vertex of cylindrical structure coincides to the shortest sideline on base and the extended line of push rod, the tractive force collection of rack body 100
In on the extended line where push rod, ensure that the caliber of rack body 100 is constant.
Rack body 100 can be made of niti material or processing of high molecular material, can specifically pass through laser cutting
NiTi tubing forms, and can also be formed by laser cut Nitin plank and then curling thermal finalization, further can also be by nickel
Titanium silk material weaves；Or it can also be process using flexible plastic material.
Embodiment two
Fig. 4 to Fig. 5 shows embodiment two, wherein identical with embodiment one or corresponding parts use and embodiment one
Corresponding reference numeral.For simplicity, the distinctive points of embodiment two and embodiment one are only described.It is in place of difference, first
Closed loop net unit 111 is different from the arrangement form of the second closed loop net unit 112.
In the present embodiment, along the axis direction of screw sheel structure, single first closed loop net unit 111 and double second
Closed loop net unit 112 is in be intervally arranged；Alternatively, between double first closed loop net unit 111 and single second closed loop net unit 112 are in
Every arrangement.
Embodiment three
Fig. 6 and Fig. 7 shows embodiment three, wherein identical with embodiment one or corresponding parts use and embodiment one
Corresponding reference numeral.For simplicity, the distinctive points of embodiment three and embodiment one are only described.It is in place of difference, first
Closed loop net unit 111 is different from the arrangement form of the second closed loop net unit 112.
In the present embodiment, along the circumferential direction of screw sheel structure, single first closed loop net unit 111 and single second
Closed loop net unit 112 is intervally arranged；Alternatively, double first closed loop net unit 111 is arranged with single second closed loop net unit 112 interval
Cloth.
Example IV
As shown in Figure 8 and Figure 9, the utility model also provides a kind of thrombus withdrawing device, including any of the above embodiment institute
The full development stated takes bolt stent, takes the proximal end region 120 of bolt stent by fettering 600 connection push rod 200 of point, push rod 200
Outer cover be equipped with bolt stent can will be taken to be pressed into it microtubular 500, microtubular 500 pass through microtubular connector with import sheath
Pipe 400 connects.The rack body 100 is strapped in push rod 200, the constraint developing ring of constraint point 600 or the filament winding that develops
Constraint spring is fixed, and fixed form can be that welding, riveting or pressure are held.Development structure is also distributed on rack body 100, uses
With the arresting and withdrawing process and whether there is to come off and observed in real time to thrombus when taking bolt, the microcosmic behaviour of bolt is specifically taken with guidance
Make so that take bolt more accurate.The structure for taking bolt stent and operation principle are referring to above-described embodiment, and details are not described herein.
Preparation is taken out carrying out thrombus, rack body 100 is compressed to imports in sheath 400 first, led in advance
It crosses importing sheath 400 with microtubular connector to be connected, pushes push rod 200, rack body 100 can smoothly enter microtubular
In 500 tube chambers, rack body 100 will be delivered to by microtubular 500 determined according to radiography or other diagnostic means later
Thrombus position, to form tube chamber so that rack body 100 is discharged in vascular lesion position and can simultaneously be realized by push rod 200
Push pull maneuver precisely aligns, so as to be converted between compressive state and release conditions.
During interventional treatment, microtubular 500 is delivered to diseased region, and pass through thrombus, fixed microtubular 500.By pushing away
It send bar 200 that rack body 100 is pushed into the thrombus position according to determined by radiography or other diagnostic means, withdraws microtubular
500 make rack body 100 be discharged in distal end, and rack body 100 is anchored vascular wall distally flicking, and is then slowly pushed forward push
Bar 200, while microtubular 500 is withdrawn under reaction force, the tension of microtubular 500 is discharged, repeatedly until rack body
100 all releases.
Due to the elasticity and method for releasing collective effect of shape-memory material, take bolt stent that can be completely embedded into thrombus
Portion.It waits for after a certain period of time, push rod of pulling back 200 withdraws and bolt stent is taken to capture thrombus, until bolt stent will be taken together with microtubular
500 withdraw and withdraw from external together, and completion entirely takes bolt process.Rack body 100 as a whole is held by pressure and imports sheath 400
It is interior, it is then introduced into microtubular 500, that is, rack body 100 is delivered to diseased region by microtubular 500.
Obviously, above-described embodiment of the utility model is used for the purpose of clearly illustrating the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.All any modification, equivalent and improvement made within the spirit and principles of the present invention etc., should be included in
Within the protection domain of the utility model claims.
Claims (10)
1. one kind takes bolt stent, which is characterized in that including the circumferential rack body expanded self along its longitudinal axis, the rack body
Including sequentially connected remote area and the proximal end region being connected with push rod, the remote area includes the first closed loop net list
Member and the second closed loop net unit, multiple first closed loop net units connect to form sleeve with multiple second closed loop net units
Structure, the proximal end region are in cone cylinder structure, and the mesh of the first closed loop net unit is less than the second closed loop net unit
Mesh.
2. according to claim 1 take bolt stent, which is characterized in that multiple first closed loop net units and multiple described
Second closed loop net unit connects to form screw sheel structure clockwise or counterclockwise.
3. according to claim 2 take bolt stent, which is characterized in that single along the hand of helix of screw sheel structure
The first closed loop net unit is in be intervally arranged with the single second closed loop net unit.
4. according to claim 2 take bolt stent, which is characterized in that along the axis direction of screw sheel structure, single
One closed loop net unit is in be intervally arranged with double second closed loop net unit.
5. according to claim 2 take bolt stent, which is characterized in that along the axis direction of screw sheel structure, double
One closed loop net unit is in be intervally arranged with single second closed loop net unit.
6. according to claim 2 take bolt stent, which is characterized in that along the circumferential direction of screw sheel structure, single
One closed loop net unit is intervally arranged with single second closed loop net unit.
7. according to claim 2 take bolt stent, which is characterized in that along the circumferential direction of screw sheel structure, double
One closed loop net unit is intervally arranged with single second closed loop net unit.
8. according to claim 1 take bolt stent, which is characterized in that the first closed loop net unit include two it is parallel
The sinusoidal long wave bar sinusoidal shortwave bar parallel with the two of tail end with the head end for being connected to the sinusoidal long wave bar, two just
Chord length wave bar and two sinusoidal shortwave bars enclose class quadrilateral structure；The second closed loop net unit include two it is parallel just
Chord length wave bar, the connection wave bar being connected to along its length on sinusoidal long wave bar one end and it is connected to the sinusoidal long wave bar
With two parallel sinusoidal shortwave bars at the both ends of connection wave bar, two sinusoidal long wave bars, two sinusoidal shortwave bars and two companies
It connects wave bar and encloses class hexagonal structure.
9. according to claim 1 take bolt stent, which is characterized in that the proximal end region is oblique cone cylindrical structure, and
The vertex of oblique cone cylindrical structure coincides to the shortest sideline on base and the extended line of push rod, is avoided closely with forming the gradient
End regions caliber when withdrawing becomes smaller.
10. a kind of thrombus withdrawing device, which is characterized in that bolt stent is taken including such as claim 1-9 any one of them, it is described
Taking the proximal end region of bolt stent, the outer cover of the push rod, which is equipped with, can will take bolt stent to be pressed by fettering point connection push rod
Microtubular in it, the microtubular are connect by microtubular connector with importing sheath；Described take also is distributed on bolt stent
Development structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507634.5U CN207520180U (en) | 2017-05-09 | 2017-05-09 | One kind takes bolt stent and thrombus withdrawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720507634.5U CN207520180U (en) | 2017-05-09 | 2017-05-09 | One kind takes bolt stent and thrombus withdrawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207520180U true CN207520180U (en) | 2018-06-22 |
Family
ID=62575420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720507634.5U Active CN207520180U (en) | 2017-05-09 | 2017-05-09 | One kind takes bolt stent and thrombus withdrawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207520180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955140A (en) * | 2017-05-09 | 2017-07-18 | 心凯诺医疗科技(上海)有限公司 | One kind takes bolt support and thrombus withdrawing device |
| CN114652394A (en) * | 2022-04-06 | 2022-06-24 | 苏州恒瑞宏远医疗科技有限公司 | Intravascular thrombus removal device |
-
2017
- 2017-05-09 CN CN201720507634.5U patent/CN207520180U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955140A (en) * | 2017-05-09 | 2017-07-18 | 心凯诺医疗科技(上海)有限公司 | One kind takes bolt support and thrombus withdrawing device |
| CN114652394A (en) * | 2022-04-06 | 2022-06-24 | 苏州恒瑞宏远医疗科技有限公司 | Intravascular thrombus removal device |
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