CN208851573U - A kind of segmented thrombus is broken to take device - Google Patents

Abstract

Device is taken the utility model discloses a kind of segmented thrombus is broken, which includes inner core tube；Push pipe, is sheathed on outside the inner core tube, and the push of proximally and distally stretching out of the inner core tube is managed, and the inner core tube can move freely in the push pipe；The broken bolt net of elasticity, is arranged, and the distal portion of the inner core tube is fixed in the distal end of the broken bolt net of the elasticity, the proximal end of the broken bolt net of elasticity is fixed in the inner core tube around the inner core tube；Elasticity collects mesh basket, is arranged around the inner core tube, and the distal end that the elasticity collects mesh basket is connect with the proximal end of the broken bolt net of the elasticity, and the distal end of the push pipe is fixed in the proximal end that the elasticity collects mesh basket；Under opening state, the maximum gauge that the elasticity collects mesh basket is greater than the maximum gauge of the broken bolt net of the elasticity.This takes bolt device to go thorough, high-efficient, highly-safe, easy to operate, the easy suction of removing thrombus or take out and carried out effective protection to blood vessel.

Description

A kind of segmented thrombus is broken to take device

Technical field

The utility model belongs to the field of medical instrument technology, relates generally to that a kind of segmented thrombus is broken to take device.

Background technique

Cerebral apoplexy is disease type common in medicine, and China is also world's cerebral apoplexy big country, during cerebral apoplexy has become First of state's Disease causation just has 3 appearance according in every 4 apoplexy patients of external relevant epidemiologic studies have shown that Different degrees of deformity.Acute ischemic stroke is most common type, the 80% of Zhan Suoyou stroke, especially vessel occlusion institute The acute apoplexy of cause, the death rate, disability rate are high, and huge harm can be brought to patient, once apoplexy occurs, will to patient, Family and society bring heavy burden.

Once thrombus is formed in the intracorporal blood vessel of people, the patient of/venous thronbosis dynamic for acute and chronic cerebral, vein The time window of thrombolysis only has 4.5h, and since the time is short, usually only 5% patient can receive thromboembolism treatment, in addition, for interior Section's drug therapy is difficult to control symptom or cannot fully control the patient of symptom, is especially also to merge brain while thrombosis The patient of bleeding, be not suitable for implementing thromboembolism treatment or thrombolysis and anticoagulant therapy it is invalid chronic cerebral it is dynamic/trouble of venous thronbosis Person, how to eliminate thrombus is always a treatment problem.

For being more than thrombolysis time window and having the patient of thromboembolism treatment contraindication, mechanical device can be used and remove thrombus, be somebody's turn to do Method can quickly make the revascularization of occlusion, improve the recanalization rate of blood vessel, reduce thrombolytic drug dosage, reduce symptomatic brain and go out The incidence of blood, extended treatment time window shorten and lead to the time again, thus strive for more times for reversible ischemic tissue of brain, It is obviously improved the prognosis of patient.

In the product used at present for removing removing thrombus, a kind of product is protruded at vascular thrombosis formation using hollow conduit, Then thrombus is absorbed into a conduit using suction unit and exports external, another product is bowl-shape to take bolt seal wire.But it is above-mentioned There are several defects for product, and especially after thrombosis time is longer, thrombus hardness is greatly improved, and it is more difficult by blood to inhale bolt conduit Bolt suction lead, it is equally bowl-shape that bolt seal wire is taken also can not to carry out effectively cutting to harder thrombus and be crushed.Furthermore broken in thrombus Wish that micro-wire can pass through thrombus in the process, but due to the diameter very little of micro-wire, thrombus resistance is flexible meeting, and is difficult to be inserted into Thrombus and centring position, deviate often and are likely to cause the damage to blood vessel, are crushed even if being able to carry out thrombus, also need One longer time is completed, and operating difficulty and risk are increased.It is similar to there are also one kind and is placed into endovascular bracket, only It is external by blocking collection thrombus and taking out the thrombus for being adsorbed on rack surface, therefore bolt effect is taken to be not thorough, efficiency is lower. Existing to take bolt equipment due to structure design limitation, the range of operation of instrument is insufficient, for the broken of thrombus, cutting, collect and imitates Fruit, suction, taking-up effect are bad.Therefore, it is badly in need of providing a kind of high-efficient, highly-safe, easy to operate, broken cutting effect Good, easy suction or taking-up, the thrombus breaking and thrombus taking device for not damaging blood vessel.

Summary of the invention

To solve the above-mentioned problems, device is taken the purpose of this utility model is to provide a kind of segmented thrombus is broken.

To achieve the goals above, the utility model uses following technical scheme:

A kind of segmented thrombus is broken to take device, comprising:

Inner core tube；

Push pipe, is sheathed on outside the inner core tube, and the push of proximally and distally stretching out of the inner core tube is managed, The inner core tube is moveable in the push pipe；

The broken bolt net of elasticity, is arranged, and the inner core tube is fixed in the distal end of the broken bolt net of the elasticity around the inner core tube Distal portion, the proximal end of the broken bolt net of elasticity is fixed in the inner core tube；

Elasticity collects mesh basket, is arranged around the inner core tube, and the elastic distal end for collecting mesh basket and the elasticity are broken The proximal end of bolt net connects, and the distal end of the push pipe is fixed in the proximal end that the elasticity collects mesh basket；

Under opening state, the maximum gauge that the elasticity collects mesh basket is greater than the maximum gauge of the broken bolt net of the elasticity.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, under opening state, the elasticity is broken Bolt net is ellipsoid, and the long axis of the broken bolt net of elasticity of the ellipsoid and the inner core tube is axially coincident；Preferably, it is formed The twine of the broken bolt net of elasticity of the ellipsoid is in S type along the long axis direction of ellipsoid.

It takes in device above-mentioned segmented thrombus is broken, the elasticity collects mesh basket and includes as a preferred implementation manner, Sequentially connected cutting part, vessel support portion and collection portion, wherein under opening state, the vessel support portion is cylinder.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner,

Under opening state, the cutting part is bell, the top of the bell cutting part and the broken bolt net of the elasticity Proximal end connection, the bottom opening of the bell cutting part are connect with the distal end in the vessel support portion；

Under opening state, the collection portion be it is bell, the push pipe is fixed on the top of the bell collection portion Distally, the bottom opening of the bell collection portion is connect with the proximal end in the vessel support portion；Or the collection portion is umbrella Shape, the top of the collection portion of the umbrella shape be fixed on it is described push pipe distal end, the bottom opening of the collection portion of the umbrella shape with The proximal end in the vessel support portion connects；

Preferably, the inner surface of the collection portion and/or outer surface are coated with macromolecule membrane layer；It is highly preferred that described The inner surface in vessel support portion and/or outer surface are coated with macromolecule membrane layer；It is further preferred that the macromolecule membrane layer On be uniformly distributed hole, it is further preferred that the diameter of described hole be 50-1000 μm；

Preferably, it is collected in the elasticity and is equipped with several developing marks on mesh basket；It is further preferred that in the elasticity Broken bolt is equipped with several developing marks on the net.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, the proximal end of the broken bolt net of the elasticity It is provided with broken bolt net proximal end connector, the distal end that the elasticity collects mesh basket, which is equipped with, collects mesh basket distal end connector, the broken bolt Net proximal end connector is fixed in the inner core tube, and the broken bolt net proximal end connector and the collection mesh basket distal end connector are logical Cross joinery and its construction mating connection；Preferably, the broken bolt net proximal end connector has internal screw thread, and is fixed in a manner of being spirally connected In the inner core tube.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, the broken bolt net proximal end connector It is cylindrical shape with the collection mesh basket distal end connector, and to be set in the broken bolt net close for the collection mesh basket distal end connector The outside of end connection；The broken bolt net of elasticity and the elasticity, which collect mesh basket, separately or cooperatively to revolve around the inner core tube Turn.

It takes in device above-mentioned segmented thrombus is broken, the collection mesh basket distal end connects as a preferred implementation manner, Part is the cylindrical shape that inner wall has step structure, and the internal diameter of the distal end for collecting mesh basket distal end connector is greater than the collection The internal diameter of the proximal end of mesh basket distal end connector, the part of the broken bolt net proximal end connector are sheathed on the collection mesh basket distal end and connect In the inner cavity of fitting.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, the broken bolt net proximal end connector Outer wall on along the broken bolt net proximal end connector circumferential setting groove or convex block, it is described to collect the interior of mesh basket distal end connector It is recessed on the circumferential setting convex block or groove for collecting mesh basket distal end connector, the outer wall of the broken bolt net proximal end connector on wall Slot or convex block and convex block or groove cooperation on the inner wall for collecting mesh basket distal end connector.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, further include: micro-wire is working Under state, the micro-wire passes through the inner cavity of the inner core tube.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, the proximal end setting of the inner core tube Inner core tube operation handle, the proximal end setting push pipe operation handle of the push pipe；

It takes in device above-mentioned segmented thrombus is broken, the segmented thrombus is broken as a preferred implementation manner, takes dress Setting further includes haemostatic valve, is set to the proximal end of the outer sheath, and/or is set to the proximal end of the push pipe.

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, further includes outer sheath, in conveying shape Under state, the outer sheath is set in the outside of the part push pipe, and the outer sheath, institute are stretched out in the proximal end of the push pipe The inner cavity for stating outer sheath front end is accommodated with the broken bolt net of the elasticity and the elasticity collects mesh basket；

It takes in device above-mentioned segmented thrombus is broken, as a preferred implementation manner, the proximal end setting of the outer sheath There is Biochemical analyzer device, it is preferable that the Biochemical analyzer device includes: triple valve and suction pump, wherein the triple valve setting In the outer sheath proximal end, the push pipe is stretched out from the first outlet of the triple valve, the suction pump and the threeway The second outlet of valve connects；It is further preferred that suction valve is arranged in the arrival end of the suction pump, for controlling the pumping of thrombus It inhales.

Compared with prior art, the technical benefits of the utility model is as follows:

1, the utility model take bolt device can realize for fresh and oldness thrombus piercing, passage, rotary-cut etc. act, Especially ideal to outmoded harder thrombus removal effect, the utility model takes bolt device to go removing thrombus thorough, high-efficient, safe Property it is high, easy to operate, be easy suction or take out and effective protection has been carried out to blood vessel, thrombus negative pressure can be sucked out or has directly been taken It is external out.

2, it collects mesh basket to design with shoulder, shoulder diameter is greater than the broken bolt net of distal end ellipsoid, realizes the guarantor for blood vessel Shield.

Detailed description of the invention

Fig. 1 is the broken structural schematic diagram for taking device of segmented thrombus of an embodiment of the utility model；

Fig. 2 is the enlarged drawing of position A in Fig. 1, i.e., the proximal end connector and collection mesh basket distal end connector of elastic broken bolt net The state diagram of cooperation；

Fig. 3 is that the proximal end connector of the broken broken bolt net of elasticity taken in device of the utility model thrombus connects with mesh basket distal end is collected Another structural schematic diagram of fitting, for the state diagram of cooperation the former two；

Fig. 4, which is that segmented thrombus is broken shown in Fig. 1, takes the schematic diagram that device is discharged from outer sheath；

Fig. 5 is the broken structural schematic diagram for taking device of the segmented thrombus comprising Biochemical analyzer device；

Fig. 6 is the broken structural schematic diagram for taking device of segmented thrombus of another embodiment of the utility model；

Fig. 7 is the structural schematic diagram for the haemostatic valve that the utility model uses；

Fig. 8 is the structural schematic diagram of tampon in the utility model haemostatic valve.

Wherein, appended drawing reference is as follows: 1- inner core tube, and 2- push pipe, the broken bolt net of 3- elasticity, 31,31 '-broken bolt net proximal ends connect Fitting, 311 '-grooves, 4- elasticity collect mesh basket, and 41- cutting part, 42- vessel support portion, 43- collection portion, 44,44 '-collect Mesh basket distal end connector, 441 '-convex blocks, 5- outer sheath, 6- push pipe operation handle, 7- inner core tube operation handle, 8- micro-wire, 9- triple valve, 10- suction valve, 11- suction pump, 12- haemostatic valve, 121- internal screw thread, 122- tampon, the crack 1221-

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer The embodiment of type is described in further detail.It should be understood that the specific embodiments described herein are only used for Bright and explanation the utility model, is not intended to limit the utility model.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

In the utility model, unless stated otherwise, term " front end ", " front " and " rear end ", " rear " are based on attached drawing Bearing definition specifically when observer faces attached drawing, be defined as " front end ", " front ", a left side for sight on the right of sight End is defined as " rear end ", " rear ".In addition, in the utility model, also by one end by proximal operator of all parts in device Referred to as proximal end, and one end of the separate operator of all parts is known as distal end in device.

In the utility model, term " segmented thrombus is broken to take device " is for the thrombus formed in blood vessel is broken and clear Except the intracorporal device of people out, the device of the utility model is particularly suitable for the broken of the thrombus that is formed in the cerebrovascular and removes.

Segmented thrombus provided by the utility model is broken to take device, comprising: inner core tube 1 is sheathed on outside inner core tube 1 It is (remote that 1 front end of inner core tube is fixed in push pipe 2, the elastic broken bolt net 3 being arranged on the outside of inner core tube 1 and its front end (distal end) End) and its distal end is connect with broken 3 proximal end of bolt net of elasticity and the elasticity collection mesh basket for pushing 2 distal end of pipe is fixed in its proximal end 4, referring to Fig. 1-6, in specific embodiment of the present utility model, segmented thrombus is broken, and to take device further include being sheathed on push pipe Outer sheath 5 outside 2, the micro-wire 8 being arranged in inside inner core tube 1, the Biochemical analyzer for aspirating broken thrombi fill It sets.The structure to all parts or device and the positional relationship between them and connection relationship are illustrated one by one below.

Inner core tube 1 is elongated hollow tube, and in order to which operator is easy to operate, the proximal end setting inner core tube of inner core tube 1 is operated Handle 7, operation inner core tube operation handle 7 can realize the rotation, propulsion and retrogressing of inner core tube 1.

Pipe 2 is pushed, is elongated hollow tube, internal diameter is greater than the outer diameter of inner core tube 1, and push pipe 2 is sheathed on the outer of inner core tube 1 Portion, and push pipe 2 is stretched out in the distal end (front end) of inner core tube 1 and proximal end (rear end), that is to say, that inner core tube 1 passes through push pipe 2 Hollow cavity, and make the both ends of inner core tube 1 be exposed to push pipe 2 outside, inner core tube 1 push pipe 2 in be removable 's.In order to which operator facilitates operation, the proximal end setting push pipe operation handle 6 of push pipe 2, the i.e. close end of inner core tube 1 also from It pushes and is pierced by the hollow cavity of pipe operation handle 6, operator can realize push pipe 2 by operation push 2 operation handle 6 of pipe Rotation, propulsion and retrogressing.

The broken bolt net 3 of elasticity, is arranged around inner core tube 1, and the distal end of inner core tube 1 is fixed in the distal end of the broken bolt net 1 of elasticity The proximal end in portion, the broken bolt net 1 of elasticity is fixed in inner core tube 1, and position of the proximal end of the broken bolt net 1 of elasticity in inner core tube 1 is separate The distal end of inner core tube 1 and it is close to the proximal end of inner core tube 1；The proximal end of the broken bolt net 1 of elasticity adheres in inner core tube 1, can also be with It is fixed on by way of being spirally connected on the outer wall of inner core tube 1, in the utility model preferred embodiment, the broken bolt net 1 of elasticity Proximal end is provided with broken bolt net proximal end connector 31,31 ', and referring to figs. 2 and 3, broken bolt net proximal end connector 31,31 ' has interior spiral shell Line, the position being connected and fixed on the outer wall of inner core tube 1 with broken bolt net proximal end connector 31,31 ' are equipped with external screw thread, and broken bolt net is close End connection 31,31 ' is fixed in inner core tube 1 in a manner of being spirally connected.Similarly, the distal end of the broken bolt net 1 of elasticity can also be with proximal end Identical mode is fixed on the distal portion of inner core tube 1.

The broken bolt net 3 of elasticity is completed thrombus punctures, passage, cutting, rotary-cut etc. and is acted, belongs to reticulated elastomeric, by In the case where squeezing any deformation can occur for external force, but can be returned to original state after losing external force, and the broken bolt net 2 of elasticity is being beaten Under open state (i.e. not under by any external force), the reticulate body of the arbitrary shape as made of metal wire knitted can be, from right For on the cutting effect of thrombus, which formed by the wire of front and back trend.In order to reach more ideal blood Bolt crushing effect, it is preferable that the broken bolt net 3 of elasticity is ellipsoid, the long axis of the spheroid and inner core tube 1 it is axially coincident, i.e., it is interior The central axis of core pipe 1 is the long axis of the spheroid；It is highly preferred that forming each metal of the broken bolt net 3 of elasticity of the ellipsoid Twine is S-type along the long axis direction of ellipsoid, that is to say, that the every distal-to-proximal metal twine of the broken bolt net 3 of own elasticity is all S-type, the broken bolt net 3 of ellipsoid elasticity is woven by the memory alloy wire of more S-shapeds, can be with interior referring to Fig. 1 and Fig. 6 The rotation of core pipe 1 realizes that 360 degree rotary-cuts to thrombus, S-shaped design are conducive to circumgyration incision, can preferably utilize S type structure into Row cutting, increases the completeness of thrombus removal.The broken bolt net 3 of elasticity using the metal wire knitted of single or more Nitinol and At；Or it is formed using the 3D printing of metal alloy powder.

Elasticity collects mesh basket 4, is arranged around inner core tube 1, and elasticity collects the distal end and the proximal end of the broken bolt net 3 of elasticity of mesh basket 4 The distal end of push pipe 2 is fixed in connection, the proximal end that elasticity collects mesh basket 4.Elasticity collect mesh basket 4 used in metal mesh be using The metal wire knitted of niti-shaped memorial alloy, which is formed or is cut by laser, to be formed or 3D printing forms.

The connection that the distal end and the proximal end of the broken bolt net 3 of elasticity of mesh basket 4 are collected about elasticity, can be divided into two kinds, one is It is fixedly connected, another kind is that elasticity collects mesh basket 4 and the broken bolt net 3 of elasticity does not depart from but independently rotary connection type.Below Both modes are described in detail respectively.

Elasticity collects the distal end of mesh basket 4 and the proximal end of the broken bolt net 3 of elasticity is the mode being fixedly connected, such as elastic collecting net The distal end of basket 4, which is provided with, collects mesh basket distal end connector, which can be the component with internal thread structure, and the broken bolt of elasticity The broken bolt net proximal end connector of the proximal end setting of net 3 can be outer with matching with collection mesh basket distal end connector internal screw thread Screw thread is fixed on broken bolt net proximal end connector to will collect mesh basket distal end connector by way of being spirally connected, is achieved in Be fixedly connected, the two can also be fixedly connected by way of adherency or other it is feasible be fixedly connected with mode, in this kind of situation Under, pushing and pulling inner core tube 1 forward or backward can change the external structure that elasticity collects mesh basket 4 and the broken bolt net 3 of elasticity, even if it is sent out Change shape, shunk and expanded, when to inner core tube 1 is pushed forward, elasticity can be collected to mesh basket 4 and the broken bolt net 3 of elasticity become Linear structure；When pulling back inner core tube 1, the internal diameter that elasticity collects mesh basket 4 and the broken bolt net 3 of elasticity can be increased, to make it It fully opens, when fully opening, the broken bolt net 3 of elasticity is in ellipsoid, as described above, and the structure of elasticity collection mesh basket 4 can be The mesh basket being open towards distal end, so that broken thrombus is collected into mesh basket.Under the mode being fixedly connected, usually to reality Existing good thrombus rotary-cut effect needs simultaneously with equal angular rotation inner core tube 1 and push pipe 2, and operator is in operating process In there are inconvenient or maloperations.

In order to easily facilitate operator's operation, improve efficiency with safety, reach ideal rotary-cut effect, completely remove blood Bolt, elasticity collects mesh basket 4 and the broken bolt net 3 of elasticity is adopted without departing from but independently rotary connection type, it is preferable that elasticity is collected The distal end of mesh basket 4, which is provided with, collects mesh basket distal end connector, collects mesh basket distal end connector and broken bolt net proximal end connector passes through Joinery and its construction is cooperatively connected, this kind of joinery and its construction mating connection can make the broken bolt net 3 of elasticity and elasticity collect mesh basket 4 respectively individually Realize spinning movement, it can also the two front and back propulsion and retrogressing together.In a preferred embodiment of the utility model, referring to Fig. 2, broken bolt net proximal end connector 31 and collection mesh basket distal end connector 44 are cylindrical shape, and broken bolt net proximal end connector 31 is arranged It in 1 outside of inner core tube and is fixedly connected in inner core tube 1, and collects mesh basket distal end connector 44 and be set in broken bolt net proximal end company The outside of fitting 31 and form tight fit；The broken bolt net 3 of elasticity and elasticity, which collect mesh basket 4, can separately or cooperatively surround inner core tube 1 Rotation.It is highly preferred that the stability in order to guarantee the two cooperation, collecting mesh basket distal end connector 44 is that inner wall has step structure Cylindrical shape, i.e., the cylindric outer diameter for collecting mesh basket distal end connector 44 is unified, and internal diameter is divided into two kinds, wherein by short round Property broken 3 side of bolt net that section of cylinder internal diameter be greater than that section of cylinder internal diameter far from broken 3 side of bolt net of elasticity, i.e. collection mesh basket distal end The internal diameter of the distal end (front end) of connector 44 is greater than the internal diameter for collecting the proximal end (rear end) of mesh basket distal end connector 44, broken bolt net The part of proximal end connector 31 is sheathed in the inner cavity for collecting mesh basket distal end connector 44 and forms tight fit, that is to say, that circle Tubular is collected on mesh basket distal end connector 44, that section of cylinder internal diameter and broken bolt net proximal end connector close to broken 3 side of bolt net of elasticity 31 outer diameter matches, and the two forms tight fit.

In order to prevent in push-and-pull inner core tube 1 forward or backward and push pipe 2 or when rotary inner core pipe 1 is with push pipe 2, The broken bolt net of elasticity 3 and elasticity are collected mesh basket 4 and are separated from, in another preferred embodiment of the utility model, referring to Fig. 3, The fit structure of mesh basket distal end connector and broken bolt net proximal end connector is collected for another kind, broken bolt net proximal end connector 31 ' Along the circumferential setting groove 311 ' of cylindric broken bolt net proximal end connector 31 ' on outer wall, the interior of mesh basket distal end connector 44 ' is collected Groove on wall on the circumferential setting convex block 441 ' for collecting mesh basket distal end connector, the outer wall of broken bolt net proximal end connector 31 ' Cooperate with the convex block 441 ' on the inner wall of collection mesh basket distal end connector 44 ', i.e., on the inner wall of collection mesh basket distal end connector 44 ' Convex block 441 ' be just connected in the groove 311 ' on the outer wall of broken bolt net proximal end connector 31 ', simultaneously because groove 311 ' It is circumferential design with convex block 441 ', so the broken bolt net 3 of elasticity and elasticity collect mesh basket 4 and the function independently rotated still may be implemented Energy.Using this kind of connection structure, the independent rotation of the broken bolt net 3 of elasticity is may be implemented in rotary inner core pipe 1, and rotation push pipe 2 can also To realize that elasticity collects the independent rotation of mesh basket 4, the broken bolt net 3 of elasticity and elasticity, which collect mesh basket 4, to be rotated jointly.Due to this In embodiment, collects in mesh basket distal end connector 44 ' and broken bolt net proximal end connector 31 ' and devise circumferential 441 ' He Yuqi of convex block The circumferential recess 311 ' of cooperation is not all allowed to easily cause elasticity so either still pulling back inner core tube 1 to being pushed forward inner core tube 1 Broken bolt net 3 and elasticity collect the disengaging of mesh basket 4, can the two be shunk or be expanded simultaneously.

In preferred embodiments of the present invention, elasticity collects mesh basket 4 and is used not only for collecting broken thrombi Body can also play the role of support blood vessels wall, so that being in an open state lower maximum gauge is less than the maximum that elasticity collects mesh basket 4 The broken bolt net 3 of elasticity of diameter positions, while being also prevented from the broken bolt net 3 of elasticity and deviateing blood vessel center position and damage vascular wall；May be used also The cutting to thrombus is realized during spinning movement.Elasticity is collected mesh basket 4 and can be integrally formed.Therefore, practical new at this In the preferred embodiment of type, elasticity collects mesh basket 4 and includes sequentially connected cutting part 41, vessel support portion 42 and collection portion 43, Wherein, vessel support portion 42 is cylinder, can play the role of support blood vessels wall under opening state, vessel support portion 42 again can Referred to as shoulder portion, the design in shoulder portion, shoulder portion diameter is greater than the minor axis diameter of the broken bolt net 3 of distal end ellipsoid elasticity, to blood vessel It is supported, also provides enough spaces to the broken bolt net 3 of ellipsoid elasticity of front end, play the role of protecting blood vessel.In order to realize Ideal cutting and support effect, cutting part 41 are that (i.e. elasticity is received for the top of bell, bell cutting part 41 under opening state Collect the distal end of mesh basket 4) it is connect with the proximal end of the broken bolt net 3 of elasticity, the bottom opening of bell cutting part 41 and vessel support portion 42 Distal end connection；That is, the opening of bell cutting part 41 is directed towards rear, the top of bell cutting part 41 can be with It is provided with above-mentioned collection mesh basket distal end connector 44,44 ', the diameter of the open end of bell cutting part 41 is exactly equal to blood vessel branch The diameter of support 42.Since cutting part 41 primarily serves the effect that the entire elasticity of support collects mesh basket 4, and rotating or pushing and pulling process In play thrombus dissection, so the mesh of cutting part 41 wants dilute relative to the mesh in vessel support portion 42 and collection portion 43 It dredges, it is highly preferred that cutting part 41 is formed by moving towards for axial wire, i.e., without the list being circumferentially arranged around inner core tube 1 One metal wire.In order to realize ideal collecting effect, under opening state, collection portion 43 be it is bell, referring to Fig. 1-5, bell receipts The distal end of push pipe 2 is fixed on the top (i.e. the proximal end of elasticity collection mesh basket 4) in collection portion 43, and the bottom of bell collection portion 43 is opened Mouth is connect with the proximal end in vessel support portion 42, i.e., the opening direction of bell collection portion 43 is directed towards front, is collected from elasticity It is similar to be buckled togather two caps with the brim of a hat from the point of view of the overall structure of mesh basket 4.In another implementation of the utility model In example, referring to Fig. 6, collection portion 43 is umbrella shape, and the top (i.e. the proximal end of elasticity collection mesh basket 4) of the collection portion 43 of umbrella shape is fixed on The distal end of pipe 2 is pushed, the bottom opening of the collection portion 43 of umbrella shape is connect with the proximal end in vessel support portion 42, i.e. the opening court of umbrella shape Forwards.The elasticity of both the above structure collects the structure design of mesh basket 4, makes it easier in income conduit, and can realize pair Thrombus is cut repeatedly again.

In reciprocal contraction and process of expansion, thrombus block drifts about to distal end in order to prevent, and guarantees that Distal blood flow fills Note, the inner surface of the reticulate body of collection portion 43 and/or outer surface are coated with macromolecule membrane layer；Preferably, vessel support portion 42 Reticulate body inner surface and/or outer surface be also coated with macromolecule membrane layer, specifically, macromolecule membrane layer can be partially covered Vessel support portion 42；It is further preferred that being uniformly distributed hole on macromolecule membrane layer, the diameter of described hole is 50- 1000μm.The raw material of macromolecule membrane layer is polyurethane or polytetrafluoroethylene (PTFE)；The raw material of macromolecule membrane layer is preferably polyurethane； It is highly preferred that the average molecular weight of polyurethane is 100000~1000000g/mol；More it is highly preferred that polyurethane is preferably Any one of TECOFLEX series aliphatic polyurethane and Pellethane2363 series 80AE aromatic urethane.

In addition, increasing development to realize the positioning for collecting mesh basket 4 and the broken bolt net 3 of elasticity to elasticity in the course of surgery Property, several development points can be added on mesh basket 4 and the broken bolt net 3 of elasticity by collecting in elasticity, be preferably provided at the front-end and back-end of the two.

Micro-wire 8, in the operating condition, micro-wire 8 pass through the inner cavity of inner core tube 1, and the both ends of micro-wire 8 are in What the both ends of core pipe 1 were stretched out；Micro-wire 8 mainly plays the role of guiding and pierces through thrombus.

Outer sheath 5 collects mesh basket 4, under transport status, 5 sets of outer sheath mainly for delivery of the broken bolt net 3 of elasticity and elasticity The rear end of outer sheath 5, the inner cavity storage of outer sheath front end are stretched out in the proximal end for being located at the outside of part push pipe 2, and pushing pipe 2 Flexible broken bolt net 3 and elasticity collect mesh basket 4.In the actual operation process, epitheca will can be accommodated in when pushing pipe 2 to recession The broken bolt net 3 of the elasticity of pipe front end and elasticity collect mesh basket 4 and release and make it in opened condition.

In order to more easily operate, the thrombus block being crushed in the course of surgery, is drawn into vitro by guarantee when necessary, The proximal end of outer sheath 5 is provided with Biochemical analyzer device, in the preferred embodiment of the utility model, referring to Fig. 5, Biochemical analyzer dress Set includes: triple valve 9 and suction pump 11, wherein triple valve 9 is set to outer sheath proximal end, push pipe 2 from triple valve 9 the One outlet is stretched out, and suction pump 11 is connect with the second outlet of triple valve 9；Further, for the ease of control suction, suction pump 11 Arrival end be arranged suction valve 10, for controlling the beginning and stopping of the suction of thrombus.

Bleeding in operative process in order to prevent, the segmented thrombus is broken, and to take device further include haemostatic valve 12, setting In the proximal end of outer sheath 5, and/or it is set to the proximal end of push pipe 2, to prevent Hemostatic Oral Liquid between inner core tube 1 and push pipe 2 Gap in or the gap between outer sheath 5 and push pipe 2 in outflow it is external, haemostatic valve 12 is either set to outer sheath 5 proximal end, be still set to push pipe 2 proximal end, the structure of haemostatic valve be all it is identical, in the present invention, only Description haemostatic valve 12 is set to the case where proximal end of push pipe 2, and the haemostatic valve that the utility model uses can be this field and appoint What known haemostatic valve, also can be used haemostatic valve as shown in FIG. 7 and 8, and the haemostatic valve haemostatic effect is good and simple at low cost.

As shown in FIG. 7 and 8, the front end of haemostatic valve 12 is connected with the rear end of push pipe 2, and 12 rear end of haemostatic valve has opening, Inner core tube 1 is inserted in push pipe 2 that (i.e. the rear end of inner core tube 1 passes through haemostatic valve 3 by the opening of rear end after haemostatic valve 12 Open rearward end stretch out backward).The front end of haemostatic valve 12 is connect with the mode that the rear end of push pipe 22 can be connected through a screw thread. For example, external screw thread can be arranged on the outer wall of the rear end of push pipe 2, it is arranged on the inner wall of the front end of haemostatic valve 12 corresponding Internal screw thread 121, so that push pipe 2 and haemostatic valve 12 be connected；Or the outer spiral shell of setting on the outer wall of the rear end of push pipe 2 Line, the nut (nut has internal screw thread) that setting is rotatably connected with haemostatic valve 12 in the front end of haemostatic valve 12, to pass through Nut connects haemostatic valve 12 and push pipe 2.It, can be in the screw thread of haemostatic valve 12 and push pipe 2 in order to reinforce leakproofness The device of anti-leak, such as elastic washer is arranged in junction.

Blood is revealed from the gap between the outer wall of inner wall and inner core tube 1 for pushing pipe 2 in order to prevent, haemostatic valve 12 Front end is internally provided with tampon 122.Tampon 122 is flexible laminated structure, such as can be silica gel piece.Such as Fig. 8 It is shown, crack 1221 is provided on tampon 122.Crack can be set to mutually perpendicular two.Inner core tube 1 can be from hemostasis The rear end of valve 12 enters back into push pipe 2 after entering through the crack 1221 being arranged on tampon 122.Due to tampon 122 For flexible structure, after inner core tube 1, which passes through tampon 122, enters push pipe 2, tampon 122 can be stuck in inner core tube 1 On outer wall, so that anti-Hemostatic Oral Liquid is revealed from the gap between the outer wall of inner wall and inner core tube 1 for pushing pipe 2；When inner core tube 1 does not have Have when entering push pipe 2 across tampon 122, the crack 1221 on tampon 122 is in closed state, and blood will not be from pushing away Pipe 2 is sent to leak via the rear end of haemostatic valve 12.

The broken application method for taking device of the utility model segmented thrombus is specific as follows: firstly, needing suffering from according to operation The privileged site of person's body punctures, and the distal end of micro-wire 8 is entered blood vessel from puncture orifice and is carried out forward in the blood vessel micro- Then the proximal end of micro-wire 8 is inserted into, and draw from the proximal end of inner core tube 1 by seal wire 8 until predetermined position from the distal end of inner core tube 1 The proximal end of micro-wire 8 out, storage flexible broken bolt net 3 in front end is pushed forward then along micro-wire 8 and elasticity collects mesh basket 4 Outer sheath 5, the position that 5 front end of outer sheath is reached is judged according to developing mark, when close to thrombus, withdraws outer sheath backward 5, so that the broken bolt net 3 of the elasticity for being accommodated in 5 front end of outer sheath and elasticity are collected mesh basket 4 and are released, completely open elasticity The shoulder portion for collecting mesh basket 4 is attached on vascular wall, and shoulder portion can the broken bolt net 3 of spheroid shape elasticity to front and micro- at this time Seal wire 8 plays the role of positioning, and the two is made to be maintained at the middle position of blood vessel and be unlikely to damage blood because deviateing blood vessel center Then inner core tube operation handle 7 is suitably shunk the broken bolt net 3 of elasticity to certain distance is pushed forward and elasticity collects mesh basket 4 by tube wall, It is penetrated in thrombi convenient for it, entire broken pin device is pushed ahead, it can be by the broken bolt net of elasticity when micro-wire 8 passes through thrombus 3 bring into thrombi, when the part of the broken bolt net 3 of elasticity enters in thrombi body, can withdraw backward inner core tube operation handle 7 Mesh basket 4 is collected further to open the broken bolt net 3 of elasticity and elasticity, then passes through 7 rotary inner core pipe 1 of inner core tube operation handle again, To make the broken bolt net 3 of elasticity carry out 360 degree rotation in thrombi body, to carry out rotary-cut to thrombi and be crushed, by continuous Ground carries out cutting radially, axially to thrombi and is crushed, then proceed to push ahead to being pushed forward, acting to recession, rotation etc. Entire broken pin device can rotate push pipe operation handle 6, bullet when the front end that elasticity collects mesh basket 4 also enters thrombus area Property collect thrombi that the cutting part 41 of mesh basket 4 can be crushed elastic broken bolt net 3 or the broken bolt net 3 of elasticity passes through but do not clear up Clean thrombi carries out rotary-cut again, due to the broken bolt net 3 of elasticity and elasticity collect mesh basket 4 can individually rotary-cut, so The direction of rotation of the two can be the same or different, during rotary-cut, as long as arbitrarily rotation push pipe operation handle 6 and interior Core pipe operation handle 7.With entire broken pin device is constantly pushed ahead, thrombus is thoroughly removed, and the thrombus of removing is broken Block can be collected into elasticity and collect in the collection portion 43 of mesh basket 4.Finally, push pipe 2 is withdrawn backward, by broken 3 He of bolt net of elasticity Elasticity collects the front end that mesh basket 4 takes in outer sheath 5, at leisure withdraws from entire broken pin device in vitro.So complete thrombus It is broken to take.

In addition, can also be incited somebody to action in the course of surgery by thrombus draw-out device in specific time if thrombus block is larger Broken thrombus fragment is extracted, so that thrombus fragment be avoided to again result in embolism to distal end drift.

The method for forming the macromolecule membrane layer with special diameter hole on mesh basket 4 is collected in elasticity, successively includes such as Lower step:

The raw material of macromolecule membrane layer is dissolved in organic solvent and pore creating material is added to form pre-coating solution by step 1；

Pre-coating solution is de-gassed by step 2, obtains masking liquid；

Step 3 is collected masking liquid dip-coating on 4 corresponding position of mesh basket in elasticity using dip coating, and it is every that elasticity collects mesh basket 4 Carry out drying processing after secondary dip-coating, carry out multiple dip-coating, dry processing after obtain having cated metal mesh；

Step 4 repeatedly rinses the cated metal mesh of the tool using reagent, until pore creating material all wash away with Described hole is formed, is then dried；Preferably, the reagent dissolves pore creating material but does not dissolve the macromolecule membrane, it is preferable that Described hole is perforated holes.

Organic solvent is one of methylene chloride, chloroform, methanol, ethyl alcohol, acetone, tetrahydrofuran or a variety of.It makes Hole agent is water soluble salt of ammonia or water-soluble high-molecular material；Reagent is pure water.

Claims (10)

1. a kind of segmented thrombus is broken to take device characterized by comprising

Inner core tube；

Push pipe, is sheathed on outside the inner core tube, and the push of proximally and distally stretching out of the inner core tube is managed, described Inner core tube is moveable in the push pipe；

The broken bolt net of elasticity, is arranged, and the remote of the inner core tube is fixed in the distal end of the broken bolt net of the elasticity around the inner core tube The proximal end of end, the broken bolt net of elasticity is fixed in the inner core tube；

Elasticity collects mesh basket, is arranged around the inner core tube, and the elasticity collects distal end and the broken bolt net of the elasticity of mesh basket Proximal end connection, it is described elasticity collect mesh basket proximal end be fixed on it is described push pipe distal end；

Under opening state, the maximum gauge that the elasticity collects mesh basket is greater than the maximum gauge of the broken bolt net of the elasticity.

2. segmented thrombus according to claim 1 is broken to take device, which is characterized in that under opening state, the elasticity is broken Bolt net is ellipsoid, and the long axis of the broken bolt net of elasticity of the ellipsoid and the inner core tube is axially coincident；It is formed described ellipse The twine of the spherical broken bolt net of elasticity is S-type along the long axis direction of ellipsoid.

3. segmented thrombus according to claim 1 is broken to take device, which is characterized in that it is described elasticity collect mesh basket include according to Cutting part, vessel support portion and the collection portion of secondary connection, wherein

Under opening state, the vessel support portion is cylinder；

Under opening state, the cutting part is bell, the proximal end on the top of the bell cutting part and the broken bolt net of the elasticity Connection, the bottom opening of the bell cutting part are connect with the distal end in the vessel support portion；

Under opening state, the collection portion be it is bell, the top of the bell collection portion be fixed on it is described push pipe distal end, The bottom opening of the bell collection portion is connect with the proximal end in the vessel support portion；Or the collection portion is umbrella shape, institute The distal end of the push pipe, the bottom opening of the collection portion of the umbrella shape and the blood are fixed in the top for stating the collection portion of umbrella shape The proximal end of pipe support portion connects；

The inner surface of the collection portion and/or outer surface are coated with macromolecule membrane layer；Uniformly divide on the macromolecule membrane layer Cloth hole.

4. segmented thrombus according to claim 1 is broken to take device, which is characterized in that the proximal end of the broken bolt net of elasticity is set It is equipped with broken bolt net proximal end connector, the distal end that the elasticity collects mesh basket, which is equipped with, collects mesh basket distal end connector, the broken bolt net Proximal end connector is fixed in the inner core tube, and the broken bolt net proximal end connector passes through with the collection mesh basket distal end connector Joinery and its construction is cooperatively connected；The broken bolt net proximal end connector has internal screw thread, and the inner core is fixed in a manner of being spirally connected Guan Shang.

5. segmented thrombus according to claim 4 is broken to take device, which is characterized in that the broken bolt net proximal end connector and The collection mesh basket distal end connector is cylindrical shape, and the collection mesh basket distal end connector is set in the broken bolt net proximal end The outside of connector；The broken bolt net of elasticity and the elasticity, which collect mesh basket, separately or cooperatively to revolve around the inner core tube Turn.

6. segmented thrombus according to claim 4 is broken to take device, which is characterized in that the collection mesh basket distal end connector There is the cylindrical shape of step structure for inner wall, and the internal diameter of the distal end for collecting mesh basket distal end connector is greater than the collecting net The internal diameter of the proximal end of basket distal end connector, the part of the broken bolt net proximal end connector are sheathed on the collection mesh basket distal end and connect In the inner cavity of part.

7. segmented thrombus according to claim 6 is broken to take device, which is characterized in that the broken bolt net proximal end connector Along the circumferential setting groove or convex block of the broken bolt net proximal end connector, the inner wall for collecting mesh basket distal end connector on outer wall The upper groove on the circumferential setting convex block or groove of collecting mesh basket distal end connector, the outer wall of the broken bolt net proximal end connector Or convex block and it is described collect mesh basket distal end connector inner wall on convex block or groove cooperate.

8. segmented thrombus according to claim 1 is broken to take device, which is characterized in that further include:

Micro-wire, in the operating condition, the micro-wire pass through the inner cavity of the inner core tube.

9. segmented thrombus according to claim 1 is broken to take device, which is characterized in that further include outer sheath, in conveying shape Under state, the outer sheath is set in the outside of the part push pipe, and the outer sheath, institute are stretched out in the proximal end of the push pipe The inner cavity for stating outer sheath front end is accommodated with the broken bolt net of the elasticity and the elasticity collects mesh basket.

10. segmented thrombus according to claim 9 is broken to take device, which is characterized in that the proximal end of the outer sheath is arranged There is Biochemical analyzer device, the Biochemical analyzer device includes: triple valve and suction pump, wherein the triple valve is set to described Outer sheath proximal end, the push pipe are stretched out from the first outlet of the triple valve, and the of the suction pump and the triple valve Two outlet connections.