CN208910390U - Take pin device and intervention medical system - Google Patents
Take pin device and intervention medical system Download PDFInfo
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- CN208910390U CN208910390U CN201820879399.9U CN201820879399U CN208910390U CN 208910390 U CN208910390 U CN 208910390U CN 201820879399 U CN201820879399 U CN 201820879399U CN 208910390 U CN208910390 U CN 208910390U
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Abstract
The utility model provides one kind and takes pin device and intervention medical system, can be improved and takes bolt effect and take bolt efficiency, and will not cause to damage to blood vessel.It is described that pin device is taken to take bolt bracket including at least one, one takes bolt strainer, push and pull seal wire and push-and-pull pipe, it is described that bolt strainer is taken to be located at the distal end for taking bolt bracket, the push-and-pull pipe, which is threaded through, to be taken in bolt bracket, and respectively with the proximal end for taking bolt bracket and the proximal end of bolt strainer is taken to connect, the push-and-pull pipe has the hollow channel of both ends open, the push-and-pull seal wire is arranged in hollow channel in a manner of mobilizable, and the distal end of the push-and-pull seal wire is extended from the distal end of hollow channel and is connect with the distal end of bolt strainer is taken, wherein, the push-and-pull pipe with push-and-pull seal wire for coaxially relatively moving, the proximal end for taking bolt strainer is set to be recessed inwardly or stretch out, in the form of this adjusts and takes bolt strainer.The intervention medical system includes described taking pin device and for conveying the delivery conduit for taking pin device.
Description
Technical field
The utility model belongs to medical instruments field, in particular to one kind takes pin device and intervention medical system.
Background technique
In China, acute apoplexy is first for leading to dead the third-largest reason and disabling.According to statistics, the whole nation is annual
New hair about 2,000,000 people of cerebral apoplexy, wherein cerebral arterial thrombosis accounts for about the 85% of all patients.
How the thrombus for blocking blood vessel removing is quickly treatment success or not once occurring by acute ischemic cerebral apoplexy
Key, there are two types of conventional treatment methods, and first, thrombus is eliminated by thrombolytic drug；Second, take pin device by blood by machinery
Bolt takes out.Artery and vein thrombolysis is the conventional method of acute ischemic stroke treatment, but this method is to the requirement of therapeutic time window
Height, strict demand rush to hospital in patient's idiopathy 3-4.5 hours and receive associated treatment, also have many restrictions to drug, and
It is 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 many advantages, such as following: quickly leads to again, it is lower
Bleeding rate and stroke intervention time window can extend, especially for acute ischemic stroke revascularization caused by vessel occlusion
There is satisfactory clinical effectiveness.
Existing encephalic takes pin device to generally use reticular structure, but these take pin device to ask there are also much to be solved
Topic, one of main problem are that the capture rate of small embolus is low, are easy to cause distal vessels embolism again.
Chinese utility model patent CN206120404, which is disclosed, a kind of takes bolt bracket with mesh enclosure: bracket and mesh enclosure are logical
Seal wire connection is crossed, the movement of mesh enclosure is controlled by mesh enclosure seal wire, after bracket takes bolt, mesh enclosure seal wire is pulled, matches mesh enclosure with bracket
It closes, stops the microthrombus to distal end escape；Although the mesh enclosure can capture the small embolus of escape, which is openning shape
State is easy to damage blood vessel during mobile mesh enclosure, and the mesh enclosure mesh size is uniform, and not can guarantee the mesh enclosure can will own
The small embolus of escape all captures.In addition, Chinese utility model patent CN205597973 is disclosed, one kind is bag-shaped to take pin device: bag
Shape structure is made of skeleton and net, and skeleton structure is made of metal material or high molecular material, and web frame is by high molecular material group
At there is microcellular structure thereon；This is bag-shaped to take pin device to cut proximal end to thrombus by the mobile device and makes to fall off
Embolus enters in the device；Since thrombus and blood vessel have adhesion strength, with the method it cannot be guaranteed that the thrombus can all take out, and
The bag-shaped reticular structure for taking pin device is that net high-polymer film is fixed on metal material using medical line, is taking bolt process
In, it is most likely that polymeric membrane is damaged under the washing away of blood flow, to influence to take bolt effect.In addition, Chinese utility model is special
Sharp CN205885492 also has similar bag shaped structure.Moreover Chinese utility model patent CN107049420 discloses one kind
There are three the brackets of closed loop net unit to take pin device for tool: the mesh area for being located in the middle the second closed loop net unit, which is greater than, is located at end
First and the third closed loop net unit in portion, due to small mesh design proximally and distally, thrombus is not susceptible to move during withdrawing
Position, it is not easily to fall off；But the bracket takes the size mesh of pin device to design, and during taking bolt, can not solve smaller embolus always
The problem of escaping and causing distal vessels embolism.
It can be seen that current takes pin device also safely and effectively the small embolus to fall off during bolt will can not be taken to capture.
Utility model content
In view of this, the present invention provides one kind to take pin device and intervention medical system, will can effectively take bolt
The small embolus capture to fall off in the process, raising takes bolt effect, and will not cause to damage to blood vessel.
One aspect according to the present utility model provides one kind and takes pin device, comprising:
At least one takes bolt bracket；
One takes bolt strainer, positioned at the far-end for taking bolt bracket；
One push-and-pull pipe, be threaded through it is described take in bolt bracket, and respectively with the proximal end for taking bolt bracket and described take bolt
The proximal end of strainer connects, and the push-and-pull pipe has the hollow channel of both ends open；And
One push-and-pull seal wire, be arranged in a manner of mobilizable in the hollow channel, and it is described push-and-pull seal wire distal end from
Extend and connect with the distal end for taking bolt strainer in the distal end of the hollow channel；
Wherein, the push-and-pull pipe is with the push-and-pull seal wire for coaxially relatively moving, make it is described take the proximal end of bolt strainer to
Sunken inside stretches out.
Other side according to the present utility model, provides a kind of intervention medical system, takes pin device including described
And delivery conduit, the delivery conduit described take pin device for conveying.
Preferably, the push-and-pull pipe coaxially relatively moves with the push-and-pull seal wire and forms first environment and second environment,
It is described that take bolt strainer include proximal part and distal portions；
The proximal part is compressed to an etat lacunaire under the first environment, and extends under the second environment
One elongation state restores also under a third environment to a reset condition；
The mesh of the proximal part under the etat lacunaire is greater than the close end under the reset condition
The mesh of the mesh divided, the proximal part under the elongation state is less than the close end under the reset condition
The mesh divided.
Preferably, under the first environment described in take bolt strainer diameter be greater than or equal under the third environment
The diameter for taking bolt strainer, under the second environment described in take the diameter of bolt strainer to be less than under the third environment
The diameter for taking bolt strainer.
Preferably, the mesh density for taking bolt strainer is greater than the mesh density for taking bolt bracket.
Preferably, described to take bolt strainer include proximal part and distal portions, and the mesh density of the proximal part is less than
Or the mesh density equal to the distal portions.
Preferably, the mesh density of the proximal part is 2~5 times of the mesh density for taking bolt bracket, described remote
The mesh density of end part is 5~20 times of the mesh density for taking bolt bracket.
Preferably, the spacing between the distal end for taking bolt strainer and the proximal end for taking bolt bracket is 5.0mm.
It is preferably, described to take pin device further include:
Multiple developing rings made of developing material are separately positioned on the proximal end for taking bolt bracket, described take bolt strainer
Proximal end and the distal end for taking bolt strainer.
Preferably, described that bolt strainer is taken to be made of shape-memory material, the shape-memory material is selected from metal and high score
One of sub- material or a variety of combinations.
In turn, described that pin device and the intervention medical system is taken to have for technical solution provided by the utility model
It has the advantages that:
The first, by push-and-pull seal wire and push and pull pipe coaxial relative movement, can make the proximal end for taking bolt strainer be recessed inwardly or
It stretches out, the so i.e. changeable mesh size taken on the proximal part of bolt strainer；When taking the proximal end of bolt strainer to be recessed inwardly
And when increasing the mesh of proximal part, the small embolus to fall off can be made to can smoothly enter into interior；When taking the proximal end of bolt strainer to stretch
When growing and the mesh of proximal part being made to become smaller, then it can prevent small embolus from escaping again；In the process for the proximal end deformation for taking bolt strainer
In, it takes the mesh size of bolt strainer that can increase or reduce, therefore, can guarantee and take bolt strainer can be by all from taking from bolt bracket
The small embolus of escape all captures, and raising takes bolt effect；
The second, using the deformation for taking bolt strainer, its diameter increases while making the proximal end for taking bolt strainer be recessed inwardly, and makes
Bolt strainer must be taken can preferably recline vascular wall during capturing small embolus, avoid small embolus from the periphery of strainer again
Escape, to preferably capture thrombus；
Third, using the deformation for taking bolt strainer, make to take bolt strainer axial elongation during withdrawing, it is radial to reduce, favorably
It is smoothly recycled in it, further increases and take bolt efficiency；
4th, using being proximally and distally connected with push-and-pull pipe and push-and-pull seal wire respectively for bolt strainer is taken, make to take bolt strainer
Both ends be gathering structure, therefore will not be damaged during push-and-pull takes bolt strainer that its proximal end is made to be recessed inwardly or stretch out
Blood trouble pipe significantly improves the safety for taking bolt process.
Detailed description of the invention
Attached drawing is not constituteed improper limits to the present invention for more fully understanding the utility model.Wherein:
Fig. 1 a is the structural schematic diagram for taking pin device in the preferred embodiment in the utility model；
Fig. 1 b is to take pin device to pass through the schematic diagram of microtubular feeding blood vessel in the preferred embodiment in the utility model；
Fig. 1 c is to take pin device to be released to the signal of blood vessel after being detached from microtubular in the preferred embodiment in the utility model
Figure；
Fig. 1 d is the schematic diagram for taking the proximal end of bolt strainer to be recessed inwardly in the preferred embodiment in the utility model；
Fig. 1 e is to take bolt strainer to capture the schematic diagram of small embolus in the preferred embodiment in the utility model；
Fig. 1 f is the schematic diagram for taking the proximal end of bolt strainer to be elongated outward in the preferred embodiment in the utility model.
In figure:
Pin device -100 is taken, bolt device main body -110 are taken, takes bolt strainer -111, proximal part -111a, distal portions -111b,
It takes bolt bracket -112, pushes and pulls seal wire -120, push-and-pull pipe -130, microtubular -140, developing ring -150,160,170, thrombus -300,
Big embolus -301, small embolus -302.
Specific embodiment
The core concept of the utility model is that providing one kind takes pin device, and it includes taking bolt device main body, pushing away that this, which takes pin device,
Draw seal wire and push-and-pull pipe；Described to take bolt device main body include that at least one takes bolt bracket and one takes bolt strainer, described to take bolt strainer
Positioned at the distal end for taking bolt bracket；The push-and-pull pipe be threaded through it is described take in bolt bracket, and respectively with the bolt bracket that takes
Proximal end and the proximal end connection for taking bolt strainer；The push-and-pull pipe has the hollow channel of both ends open, the push-and-pull seal wire
It is arranged in a manner of mobilizable in the hollow channel, and the distal end of the push-and-pull seal wire is prolonged from the distal end of the hollow channel
It stretches out and is connect with the distal end for taking bolt strainer；Wherein, the push-and-pull pipe is with the push-and-pull seal wire for coaxially relatively moving,
The proximal end of bolt strainer is taken to be recessed inwardly or stretch out described in making, in the form of taking bolt strainer described in this is adjusted.
Specifically, becoming when the proximal end for taking bolt strainer is recessed inwardly positioned at the mesh for taking bolt strainer proximal end
Greatly, thus under the washing away of blood flow, from taking the small embolus to fall off from bolt bracket can be by taking the big mesh of the proximal end of bolt strainer
Into the inside for taking bolt strainer, and then when the small embolus wait fall off fully enters the inside for taking bolt strainer, just make to take bolt strainer
Proximal end stretches out, and the mesh for the proximal end for taking bolt strainer is enabled to narrow with this, so that the small embolus of capture can not be from narrow strainer
It is escaped in mesh, and then makes bolt strainer is taken to capture small embolus securely and taking the inside of bolt strainer, taking bolt device master finally, withdrawing
Body can pull out size embolus in vitro, to solve the problems, such as smaller embolus escape and cause secondary embolism, raising takes bolt to imitate
Fruit and take bolt efficiency.
Below in conjunction with attached drawing and specific embodiment to the utility model proposes take pin device and intervention medical system
It is described in further detail.According to following explanation, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing
It is all made of very simplified form and uses non-accurate ratio, only to facilitate, lucidly aid in illustrating the utility model
The purpose of embodiment.
Such as in claims and as used in this specification, singular "a", "an" and "the" includes
Plural reference, in addition in addition non-content explicitly points out.As used in this specification, term "or" is usually to include
The meaning of "and/or" and carry out using, in addition in addition non-content explicitly points out.
Such as in claims and as used in this specification, term " longitudinal direction ", " axial direction " typically refer to be parallel to
The axis direction of bolt strainer is taken, " transverse direction ", " radial direction " are typically referred to perpendicular to the axis direction for taking bolt strainer.Term " proximal end ",
" end " refers to that one end close from operator position, " front end ", " distal end " refer to one end remote from operator position.
It is the structural schematic diagram for taking pin device in the preferred embodiment in the utility model, such as Fig. 1 a referring initially to Fig. 1 a
Shown, the utility model embodiment provides one kind and takes pin device 100, and it includes taking bolt device main body 110, push-and-pull that this, which takes pin device 100,
Seal wire 120 and push-and-pull pipe 130.Wherein, described to take bolt device main body 110 to further comprise one to take bolt strainer 111 and one takes
Bolt bracket 112.It is described that bolt strainer 111 is taken to be located at the distal end for taking bolt bracket 112, it can closely take bolt bracket 112 (to take bolt bracket
Be arranged between 112 distal end and the proximal end for taking bolt strainer 111 without spacing), can also with take that bolt bracket 112 is separated by a distance to be set
It sets, which recommends to ensure to take the length of pin device in reasonable range with this, so that it is guaranteed that bolt is taken to imitate in 5.0mm or so
Fruit, is also convenient for conveying and operation takes pin device.Specifically, taking the proximal end of bolt strainer 111 described in and taking the distal end of bolt bracket 112
The distance between for 5.0mm or so when, for relatively distal end or more tortuous blood vessel such as intracranial vessel, this spacing not only can be with
Allow blood flow to wash away small embolus to taking in bolt strainer 111, also avoid taking bolt bracket 112 and take the interval of bolt strainer 111 too close and
It influences each other, and takes bolt strainer 111 that can capture small embolus in time, prevent spile subflow from forming two to other branch vessels
Secondary embolism, and at this time take bolt device main body 110 small in size, convenient for conveying and operation.Here, the quantity for taking bolt bracket 112
Be not limited to one, can also be axially arrange it is multiple.When it is multiple for taking bolt bracket 112, no spacing setting can be, it can also
To be interval setting, and described bolt strainer 111 is taken to be arranged in one of the distalmost end distal end for taking bolt bracket 112.
In addition, the push-and-pull pipe 130 is threaded through and takes in bolt bracket 112, and the proximal end for taking bolt bracket 112 and push-and-pull are managed
130 outer surface connection, the proximal end for taking bolt strainer 111 are also connect with the outer surface of push-and-pull pipe 130.In addition, the push-and-pull
Pipe 130 has the hollow channel of both ends open, and the push-and-pull seal wire 120 is arranged in the hollow channel in a manner of mobilizable
In, and the distal end of the push-and-pull seal wire 120 is extended from the distal end of the hollow channel and is connected with the distal end of bolt strainer 111 is taken
It connects.
Then, Fig. 1 b to Fig. 1 f is please referred to, Fig. 1 b is to take pin device to lead by micro- in the preferred embodiment in the utility model
Pipe is sent into the schematic diagram of blood vessel, and Fig. 1 c is to take pin device to be released to after being detached from microtubular in the preferred embodiment in the utility model
The schematic diagram of blood vessel, Fig. 1 d are the schematic diagrames for taking the proximal end of bolt strainer to be recessed inwardly in the preferred embodiment in the utility model, figure
1e is the schematic diagram for taking bolt strainer to capture small embolus for taking pin device in the preferred embodiment in the utility model, and Fig. 1 f is that this is practical
The schematic diagram for taking the proximal end of bolt strainer to be elongated outward in novel preferred embodiment.
As shown in Fig. 1 b to Fig. 1 f, the lesion locations for taking pin device 100 to be sent into blood vessel by microtubular 140, specifically
Transmission process include:
Pin device 100 will be taken to be sent into before blood vessel, first pin device 100 will be taken to be loaded in the lumen of microtubular 140, this
When, it takes bolt bracket 112 and bolt strainer 111 is taken to be compressed in the lumen of microtubular 140；
Later, as shown in Figure 1 b, microtubular 140 is sent to 300 blocking of thrombus in blood vessel 200, and ensures to take bolt branch
The distal end of frame 112 is located at the front end (i.e. distal end) of thrombus 300, and takes the end for being proximally located at thrombus 300 of bolt bracket 112 (i.e.
Proximal end), in order to take thrombus 300 after the expansion of bolt bracket 112 to take the middle part of bolt bracket 112 described in, thus preferably capture
Thrombus 300；
Then, as illustrated in figure 1 c, microtubular 140 is withdrawn, release takes pin device 100, so that blood after taking bolt bracket 112 to expand
Bolt 300 is located at the middle part for taking bolt bracket 112, thus by taking bolt bracket 112 to capture big embolus 301, while it is generated
Small embolus 302 is then flow in blood, and takes 111 direction of bolt strainer to flow to distal end, and then bolt strainer 111 is taken to catch
It obtains.Here the volume of big embolus 301 is greater than small embolus 302.Moreover, the mesh for taking bolt strainer 111 is generally less than described
The mesh of bolt bracket 112 is taken, so as to take bolt strainer 111 that can capture from the small embolus 302 for taking escape from bolt bracket 112.
Wherein, as shown in Fig. 1 d to Fig. 1 f, the course of work for taking bolt strainer 111 to capture small embolus 302 includes:
After taking pin device 100 to be released, push-and-pull seal wire 120 fixed first remains stationary it, and to taking pin device
100 distal direction pushes push-and-pull pipe 130, makes to take the proximal part 111a of bolt strainer 111 inside under the promotion of push-and-pull pipe 130
Recess makes to take bolt strainer 111 to be close to the inner wall of blood vessel 200, and the mesh at proximal part 111a is also made to become larger (i.e. mesh face
Product becomes larger), as shown in Figure 1 d；
In turn, as shown in figs. 1 d and 1e, under the washing away of blood flow, the small embolus 302 penetrates proximal part 111a's
Big mesh enters the inside for taking bolt strainer 111, due to taking the mesh of distal portions 111b of bolt strainer 111 to be less than its proximal end at this time
The mesh of part 111a, small embolus can not be from taking the distal end of bolt strainer 111 to escape, thus small embolus 302 is limited in, bolt is taken to filter
The inside of net 111；
Later, as shown in Figure 1 f, it is fixed to still maintain push-and-pull seal wire 120, and to the proximal direction for taking pin device 100
Drawing push-and-pull pipe 130, stretches out the proximal part 111a for taking bolt strainer 111 under the drawing of push-and-pull pipe 130, so that taking bolt
The axial length of strainer 111 becomes larger, and diameter becomes smaller, such as forms the structure of a similar taper, certainly, in the drawing of push-and-pull pipe
Under, mesh (the mesh area change narrower compared to the mesh of reset condition at the proximal part 111a for taking bolt strainer 111
It is small), it can effectively stop small embolus 302 to be escaped again in this way, while also reducing the diameter for taking bolt strainer 111 and being convenient for recycling；
Finally, after completing the capture of big microthrombus, while push-and-pull seal wire 120 and push-and-pull pipe 130 are withdrawn, entirely bolt will be taken to fill
It sets 100 to be recycled in microtubular 140, and related microtubular 140 will take pin device 100 to be further recycled to guiding catheter and withdraw from
In vitro.
In order to more clearly understand the usage mode for taking pin device 100 of the utility model, below in conjunction with intracranial vessel
Lesions treatment, schematical supplementary explanation done again to the whole operation process for taking pin device 100, but the utility model
It takes what pin device was not limited to intracranial vessel to take bolt, can also be intracardiac blood vessel, pulmonary vascular, Cervical Vessels, lower limb vascular etc., and
The utility model takes pin device especially suitable for tiny, tortuous blood vessel.
Specifically, when implementing the interventional therapy of intracranial vessel: determining intracranial vessel lesion position by angiography first
It sets, guiding wire is made to pass through lesion locations later, and then microtubular 140 is made to pass through lesion locations along guiding wire, generally from stock
Microtubular 140 is imported and is delivered to intracranial lesion blood vessel by artery or arteria brachialis, then, recalls guiding wire, will take pin device
100 import in microtubular 140 out of outer sheath and are delivered to vascular lesion position, will using push-and-pull seal wire 120 and push-and-pull pipe 130
It takes pin device 100 to be pushed to the distal end of microtubular 140, but need to ensure that the distal end of bracket 112 is in the front end of thrombus 300, and prop up
The proximal end of frame 112 is in the end of thrombus 300, then, withdraws microtubular 140, makes to take bolt strainer 111 and takes bolt bracket 112 first
Release and thrombus are located at the middle part for taking bolt bracket 112 after release, and the characteristic based on self-expanding afterwards, described to take bolt strainer
111 and bolt bracket 112 is taken to be transformed into swelling state under the action of blood temperature and the inner wall for the blood vessel 200 that reclines, and then, Gu
Surely seal wire 120 is pushed and pulled, while pushing push-and-pull pipe 130, so that the mesh at the proximal part 111a for taking bolt strainer is become larger, makes from taking bolt
The small embolus 302 escaped at bracket 112 enters the inside for taking bolt strainer 111 through the big mesh of proximal part 111a recess
Afterwards, then push-and-pull pipe 130 is withdrawn, keeps the mesh at proximal part 111a more elongated compared to reset condition, to prevent spile
Son 302 is escaped again, takes pin device 100 finally, withdrawing, until pin device 100 will be taken to lead together with microtubular 140 while being retracted to
In guiding tube, pin device 100 can will be taken integrally to withdraw from outside human body, complete that bolt is taken to operate with this.
Obviously, provided by the embodiment of the utility model to take pin device 100, by push-and-pull seal wire 120 and push and pull the same of pipe 130
Axis relative movement, i.e. push-and-pull seal wire 120 is fixed, and push-and-pull pipe 130 is moved axially relative to push-and-pull seal wire 120, i.e., changeable to take bolt
The size of mesh at the proximal part 111a of strainer 111；It, can when mesh at the proximal part 111a for making to take bolt strainer increases
The small embolus to fall off is set to can smoothly enter into interior；And the mesh at the proximal part 111a for taking bolt strainer then may be used when becoming smaller
Prevent small embolus from escaping again.It is such to take stud structure, during taking the proximal end deformation of bolt strainer, blood vessel will not only be made
At damage, and this takes the mesh of bolt strainer that can increase or reduce, and therefore, can guarantee that the strainer can be by the small of all escapes
Embolus all captures, and raising takes bolt effect, and structure is simple, easy to operate.And using the deformation for taking bolt strainer, so that bolt is taken to filter
Net can preferably recline vascular wall during capturing small embolus, to preferably capture thrombus, and bolt strainer be taken to exist
Axial elongation during withdrawing, it is radial to reduce, be conducive to it and smoothly recycle.
In the present embodiment, described to take bolt bracket 112 be self-expansion type supporting structure, can be in the outer of microtubular or storage
It is compressed in sheath, and after being detached from these devices, additionally it is possible to which self-expanding simultaneously restores to reset condition.The present embodiment takes bolt bracket
112 in the case where not by external force, the morphosis near cylindrical, with this blood vessel that preferably reclines.It is described
Take bolt bracket 112 to be mainly made of shape-memory material, shape-memory material be selected from one of metal and high molecular material or
A variety of combinations, metal preferred nickel/titanium alloy, and can be cut by laser or weave to be made and take bolt bracket 112.Further, institute
Stating and taking bolt bracket 112 includes that the closed loop that is spliced to form by curve or straight line is mesh-structured, in some embodiments, described to take bolt branch
The shape of the mesh on frame 112 can be circle, square, diamond shape, olive shape or taper, in practice, described to take bolt branch
Frame 112 may include that of different sizes or variform closed loop is mesh-structured, by of different sizes or variform mesh
Reasonably arranged, can be obtained adherence quality it is good take bolt bracket 112.
In the present embodiment, in closed configuration after the proximal end gathering for taking bolt bracket 112, in order to take bolt bracket 112
Conveying and recycling are not only convenient for conveying and recycle in addition, the distal end for taking bolt bracket 112 is preferably open ports, will not also be right
The circulation of blood flow has an impact, and will not damage blood vessel, and the effect for capturing thrombus is also more preferable.In another embodiment, described
Taking the proximal end of bolt bracket 112 can also be open in ramp type, or can also be circular open ports.
In the present embodiment, it is described take bolt strainer 111 proximally and distally respectively with push-and-pull pipe 130 and push and pull 120 phase of seal wire
Connection has the morphosis of approximate sacculus in the case where not by external force, since its both ends is gathering structure, because
This will not damage blood vessel during making the proximal end for taking bolt strainer 111 be recessed inwardly or stretch out by push-and-pull, significantly mention
The high safety for taking bolt process, and conveying and recycling convenient for taking bolt strainer 111.The gathering structure can be silent knot
Structure, or ramp type opening.It is conveniently same as proximal end to be in when the proximal end for taking bolt strainer 111 is that ramp type is open
Ramp type opening takes bolt bracket 112 to match, convenient for entirely taking the conveying and recycling of pin device 100.
In the present embodiment, takes bolt strainer 111 when not by the case where external force when described, that is, be limited to the 4th environment.
It is described to take the as nature of bolt strainer 111 under the 4th environment.Further, described to take bolt strainer 111 preferably by shape memory
Material is made, and shape-memory material can be selected from one of metal material and high molecular material or a variety of combinations, and metal is excellent
The modes such as Nitinol is selected, and can be cut by laser or weave be made and takes bolt strainer 111.
Further, described that bolt strainer 111 is taken to include proximal part 111a and distal portions 111b from the near to the distant, and institute
State the mesh density that the mesh density on proximal part 111a is preferably lower than or equal on distal portions 111b, more preferable close end
The mesh density at 111a is divided to be less than the mesh density at distal portions 111b, so that in push-and-pull seal wire 120 and pushing and pulling pipe 130
Under cooperation, the mesh size for taking the proximal part 111a of bolt strainer 111 can be more easily adjusted, and can be easier to capture
From while taking the small embolus to fall off from bolt bracket 112, effectively prevent small embolus to distally escaping again.Herein, mesh density
Refer to the density degree of mesh distribution, i.e., the quantity of mesh in unit area.It is described to take bolt strainer i.e. under the 4th environment
Mesh on 111 distal portions 111b is smaller compared to the mesh of proximal part 111a or size is identical, likewise,
One, second or third environment under, the mesh of distal portions 111b is also smaller compared to the mesh of proximal part 111a or size
It is identical.The mesh density of the proximal part 111a preferably takes 2~5 times of the mesh density of bolt bracket 112, the distal portion
The mesh density of point 111b is preferably 5~20 times of mesh density for taking bolt bracket 112.Therefore, the net for taking bolt strainer 111
Hole density is greater than the mesh density for taking bolt bracket 112.
Further, the shape for taking the mesh on bolt strainer 111 does not limit particularly, but preferably polygon,
Polygon is not limited to quadrangle.Further, it should be appreciated that during withdrawing push-and-pull pipe 130, it is described to take bolt strainer 111
Entirety is elongated, and therefore, mesh thereon is not limited to the deformation at proximal part 111a, can also involve distal portions 111b, but
The deformation of distal portions 111b can be ignored substantially relative to proximal part 111a.
Preferably, described to take pin device 100 further include developing ring 150,160,170, and bolt bracket 112 and push-and-pull is being taken to manage
130 proximal ends being connected are equipped with developing ring 150, separately bolt strainer 111 are being taken to be equipped with separately with the proximal end that pipe 130 is connected is pushed and pulled
One developing ring 160, while also bolt strainer 111 being taken to be equipped with another developing ring with the far-end that seal wire 120 is connected is pushed and pulled
170.And then the proximal end of bolt bracket 112 and the position of distal end are taken by X-ray development observation, that is, it can determine whether that bolt bracket 112 is taken to discharge
When thrombus whether be located therein, and can also develop observation take bolt strainer 111 proximal end and distal end relative position, sentenced with this
The disconnected deformation state for taking bolt strainer 111, is such as recessed inwardly or stretches out.Any one developing ring is made of developing material, such as
Platinum, according to, gold, tantalum or its alloy.Further, it is solid the modes such as can to hold by welding, glue bonding, riveting or pressure for these developing rings
It is scheduled on each connecting portion.
It is further preferred that the push-and-pull seal wire 120 is selected from medical guiding wire, material is preferably stainless steel or Nitinol,
It is capable of providing more excellent push performance, operating performance and biocompatibility.It is described push-and-pull pipe 130 material be preferably
High molecular material, to provide suitable push performance, operating performance and biocompatibility, such as can be selected from Pebax,
PTFE/PTE, silica gel, ABS resin, Kevlar fiber, glass fibre, phthalic acid ester, polyphenylene sulfide, n-butanol, butylbenzene rubber
Glue, molybdenum trioxide, polyvinyl chloride, polystyrene, methyl acrylate, Toughening Effect of Ethylene Copolymer Elastomer, epoxide-resin glue, N methylene
Bisacrylamide, Dimethyl Trimethylsilylmethylphosphonate, methyl methacrylate, isocyanates, nano-graphene, adjacent hydroxyl two
Benzophenone, asphalt base carbon fiber, silicon rubber, hydroxy silicon oil etc..
Further, the utility model embodiment additionally provides a kind of intervention medical system comprising delivery conduit and
Described to take pin device 100, the delivery conduit includes microtubular 140 described in the present embodiment, described takes pin device for conveying
100.Further, the delivery conduit further includes guiding catheter and punctures sheath, and the microtubular 140 is used to enter the guiding
Conduit, the guiding catheter be used for enter the puncture sheath, the puncture sheath it is most advanced enter blood vessel.It micro- is led in addition, described
The proximal end of pipe is connected with the distal end of outer sheath, pin device 100 can be taken to enter by push-and-pull seal wire 120 and the push-and-pull push of pipe 130 micro-
Conduit, and then reach at vascular thrombosis.The outer sheath is a hollow polymer tube, and main function is in product packaging
Constraint takes bolt device main body, and is connect by connector with microtubular when use takes pin device, and pin device will be taken to imported into and matched
In the microtubular 140 of set.
To sum up, the push-and-pull pipe 130 of the present embodiment and push-and-pull seal wire 120 can make to take bolt strainer 111 under mutual cooperation
Proximal part 111a is recessed inwardly, or stretches out the proximal part 111a for taking bolt strainer 111, specifically, the push-and-pull is managed
130 with the push-and-pull seal wire 120 it is coaxial relative movement and form first environment and second environment.
Form the condition of the first environment are as follows: keep push-and-pull seal wire 120 fixed, and to taking the remote of pin device 100
End push push-and-pull pipe 130.Form the condition of the second environment are as follows: keep push-and-pull seal wire 120 fixed, and to taking pin device
100 proximal end withdraws push-and-pull pipe 130.Therefore, the proximal part 111a for taking bolt strainer 111 is under the first environment
It is compressed to etat lacunaire, and extends to elongation state under the second environment, and is restored also under third environment to original shape
State.Form the condition of the third environment are as follows: it is described take bolt strainer 111 discharge after, only by the constraint of blood vessel.
So, the mesh of the proximal part 111a under the etat lacunaire is greater than the institute under the reset condition
The mesh of proximal part 111a is stated, and the mesh of the proximal part 111a under the elongation state is less than described original
The mesh of the proximal part 111a under state.Therefore, by adjusting the size of the mesh of proximal part 111a, be conducive to catch
Small embolus is obtained, small embolus is avoided to escape again.
Certainly, while obtaining said effect, additionally it is possible to obtain effect below:
The diameter of bolt strainer 111 is taken to be greater than or equal to the institute under the third environment described under the first environment
State the diameter for taking bolt strainer 111, and under the second environment described in take bolt strainer 111 diameter be less than in the third ring
The diameter for taking bolt strainer 111 under border.Therefore, withdraw take pin device during, by withdraw push-and-pull pipe 130, have
The diameter of bolt strainer 111 is taken conducive to reduction, and facilitates preferably recycling and takes bolt strainer, is further increased and is taken bolt efficiency.
In addition, the diameter of bolt strainer 111 is taken described under the first environment, usually less than under the 4th environment
The diameter for taking bolt strainer 111, therefore, under the second environment described in take the diameter of bolt strainer 111 generally also small
The diameter of bolt strainer 111 is taken described under the 4th environment, i.e., the diameter for taking bolt strainer 111 under free state is greater than
The diameter for taking bolt strainer under etat lacunaire or elongation state.In this way, can make that bolt strainer 111 is taken to be preferably bonded vascular wall,
Further ensure that small embolus will not escape again.
Moreover, it is also necessary to supplement, when it is described take bolt bracket be it is multiple when, the push-and-pull pipe 130 sequentially passes through these
Bracket, and the proximal end of bolt bracket and the outer surface of the push-and-pull pipe 130 is each taken to connect.Also, the proximal end of each bracket with
Push and pull the settable developing ring in position that pipe 130 connects.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
Claims (10)
1. one kind takes pin device characterized by comprising
At least one takes bolt bracket；
One takes bolt strainer, positioned at the far-end for taking bolt bracket；
One push-and-pull pipe, be threaded through it is described take in bolt bracket, and respectively with the proximal end for taking bolt bracket and described take bolt strainer
Proximal end connection, and it is described push-and-pull pipe have both ends open hollow channel；And
One push-and-pull seal wire, is arranged in the hollow channel in a manner of mobilizable, and the distal end of the push-and-pull seal wire is from described
Extend and connect with the distal end for taking bolt strainer in the distal end of hollow channel；
Wherein, the push-and-pull pipe is with the push-and-pull seal wire for coaxially relatively moving, and makes described the proximal end of bolt strainer to be taken to concave
It falls into or stretches out.
2. taking pin device as described in claim 1, which is characterized in that the push-and-pull pipe and the push-and-pull seal wire coaxially opposite shifting
Dynamic and form first environment and second environment, described to take bolt strainer include proximal part and distal portions；
The proximal part is compressed to an etat lacunaire under the first environment, and extends to one under the second environment and stretch
Long status restores also under a third environment to a reset condition；
The mesh of the proximal part under the etat lacunaire is greater than the proximal part under the reset condition
Mesh, the mesh of the proximal part under the elongation state are less than the proximal part under the reset condition
Mesh.
3. taking pin device as claimed in claim 2, which is characterized in that take the straight of bolt strainer described under the first environment
Diameter takes the diameter of bolt strainer described in being greater than or equal under the third environment, under the second environment described in take bolt to filter
The diameter of net takes the diameter of bolt strainer described in being less than under the third environment.
4. as claimed in any one of claims 1-3 take pin device, which is characterized in that the mesh density for taking bolt strainer is big
In the mesh density for taking bolt bracket.
5. as claimed in any one of claims 1-3 take pin device, which is characterized in that described to take bolt strainer include proximal part
And distal portions, the mesh density of the proximal part are less than or equal to the mesh density of the distal portions.
6. taking pin device as claimed in claim 5, which is characterized in that the mesh density of the proximal part takes bolt branch to be described
2~5 times of the mesh density of frame, the mesh density of the distal portions are 5~20 times of the mesh density for taking bolt bracket.
7. as claimed in any one of claims 1-3 take pin device, which is characterized in that the distal end for taking bolt strainer with it is described
Taking the distance between proximal end of bolt bracket is 5.0mm.
8. as claimed in any one of claims 1-3 take pin device, which is characterized in that described to take pin device further include:
Multiple developing rings made of developing material are separately positioned on the proximal end for taking bolt bracket, described take the close of bolt strainer
End and the distal end for taking bolt strainer.
9. as claimed in any one of claims 1-3 take pin device, which is characterized in that described to take bolt strainer by shape memory material
Material is made, and the shape-memory material is selected from one of metal and high molecular material or a variety of combinations.
10. a kind of intervention medical system characterized by comprising
One takes pin device as claimed in any one of claims 1-9 wherein；And
One delivery conduit described takes pin device for conveying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879399.9U CN208910390U (en) | 2018-06-07 | 2018-06-07 | Take pin device and intervention medical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879399.9U CN208910390U (en) | 2018-06-07 | 2018-06-07 | Take pin device and intervention medical system |
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| CN208910390U true CN208910390U (en) | 2019-05-31 |
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| CN201820879399.9U Active CN208910390U (en) | 2018-06-07 | 2018-06-07 | Take pin device and intervention medical system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568501A (en) * | 2020-05-27 | 2020-08-25 | 上海心玮医疗科技有限公司 | Double-layer telescopic thrombus catching device |
| CN113855159A (en) * | 2021-09-29 | 2021-12-31 | 北京泰杰伟业科技有限公司 | Combined type regulation and control bolt taking device |
| CN114886506A (en) * | 2022-07-13 | 2022-08-12 | 苏州中天医疗器械科技有限公司 | Embolectomy system and embolectomy method |
| CN115644993A (en) * | 2022-12-12 | 2023-01-31 | 北京泰杰伟业科技有限公司 | Thrombectomy support, manufacturing die of thrombectomy support and thrombectomy device |
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2018
- 2018-06-07 CN CN201820879399.9U patent/CN208910390U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568501A (en) * | 2020-05-27 | 2020-08-25 | 上海心玮医疗科技有限公司 | Double-layer telescopic thrombus catching device |
| CN113855159A (en) * | 2021-09-29 | 2021-12-31 | 北京泰杰伟业科技有限公司 | Combined type regulation and control bolt taking device |
| CN113855159B (en) * | 2021-09-29 | 2024-04-09 | 北京泰杰伟业科技股份有限公司 | Combined type regulation and control thrombus taking device |
| CN114886506A (en) * | 2022-07-13 | 2022-08-12 | 苏州中天医疗器械科技有限公司 | Embolectomy system and embolectomy method |
| CN115644993A (en) * | 2022-12-12 | 2023-01-31 | 北京泰杰伟业科技有限公司 | Thrombectomy support, manufacturing die of thrombectomy support and thrombectomy device |
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