CN113951982A - An inferior vena cava thrombus filter that facilitates thrombus ablation - Google Patents

Abstract

Translated fromChinese

本发明公开了一种便于血栓消融的下腔静脉血栓过滤器，包括外套管，所述外套管的一端设置有操控台，所述外套管的另一端设置有用于实现对血栓进行过滤的过滤组件，所述外套管内设置有用于驱动过滤组件撑开与收合的驱动导管，外套管内开设有活动槽，驱动导管滑动套接在活动槽内，驱动导管由伸缩驱动单元驱动，实现在外套管内的轴向移动，所述过滤组件的前端开口处设置有用于喷药的喷药组件。有益效果在于：1、在静脉内，通过过滤组件实现对血液的过滤，使血液中的血栓隔挡；2、在过滤组件的前端设置呈圆周分布的喷药头，可对血液中的血栓进行喷药融化。

The invention discloses an inferior vena cava thrombus filter which is convenient for thrombus ablation. , the outer sleeve is provided with a driving guide tube for driving the filter assembly to open and fold, the outer sleeve is provided with a movable groove, the driving guide tube is slidably sleeved in the movable groove, and the driving guide tube is driven by the telescopic drive unit to realize the Axial movement, the front opening of the filter assembly is provided with a spray component for spraying medicine. The beneficial effects are: 1. In the vein, the blood is filtered through the filter assembly, so that the thrombus in the blood is blocked; Spray melts.

Description

Inferior vena cava thrombus filter convenient for thrombus ablation

Technical Field

The invention relates to the technical field of medical treatment, in particular to an inferior vena cava thrombus filter convenient for thrombus ablation.

Background

Inferior vena cava thrombosis is an acute non-suppurative inflammation of the veins, the most common clinical manifestations being swelling and pain in the limbs of both lower limbs, particularly swelling and pain that worsens on standing and after walking. Because the thrombus of the inferior vena cava thrombus is unstable in the early stage and is easy to fall off, the probability of pulmonary embolism is high, so that some patients may suffer from chest distress, shortness of breath, chest pain, cough with blood, even dyspnea, coma and other life threatening conditions clinically. For the treatment of inferior vena cava thrombosis, interventional thrombolysis or aspiration may be used to remove the thrombus from the blood.

The application numbers are: CN201610093259.4, which discloses a thrombus filter, comprising a handle, a filtering umbrella for catching thrombus, a pushing catheter, and a folding device for folding the filtering umbrella; the filtering umbrella is of a netted funnel-shaped structure capable of elastically recovering, the neck of the filtering umbrella is fixedly connected with the pushing guide pipe, the pushing guide pipe is provided with an inner cavity along the axial direction, and the cavity enclosed by the filtering umbrella is communicated with the inner cavity of the pushing guide pipe; the folding device comprises a wire-collecting mechanism and a traction mechanism for drawing the wire-collecting action; the take-up line is connected with the opening part of the filtering umbrella and pulls the opening part to fold so that the filtering umbrella becomes a closed space; the traction mechanism is arranged in the inner cavity of the pushing conduit in a penetrating manner, extends towards the opening part of the filtering umbrella and is connected with the take-up wire; the pushing catheter and the traction mechanism are respectively connected with the handle, and the action of the pushing catheter and the action of the traction mechanism are controlled through the handle. However, although the patent can effectively intercept the desquamated plaque or embolus, the following technical problems still exist in use:

1. when filtering, thrombus captured by the filtering umbrella is easy to adhere to the net surface, so that a channel for blood circulation is blocked, and the blood circulation is not smooth;

2. the filtered thrombus needs to be removed after the filter is removed from the blood vessel.

Disclosure of Invention

It is an object of the present invention to solve the above problems by providing an inferior vena cava thrombus filter for facilitating thrombus ablation, which overcomes the disadvantages of the prior art, as will be described in detail below.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides an inferior vena cava thrombus filter convenient for thrombus ablation, which comprises an outer sleeve, wherein one end of the outer sleeve is provided with an operation control platform, the other end of the outer sleeve is provided with a filtering component for filtering thrombus, a driving catheter for driving the filtering component to expand and close is arranged in the outer sleeve, a movable groove is formed in the outer sleeve, the driving catheter is slidably sleeved in the movable groove, the driving catheter is driven by a telescopic driving unit to realize axial movement in the outer sleeve, and a medicine spraying component for spraying medicine is arranged at an opening at the front end of the filtering component.

Preferably, the filtering component comprises a framework structure and a telescopic sleeve net arranged on the outer side of the framework structure;

the skeleton structure comprises more than six outer bone rods uniformly distributed around the outer sleeve as a center circumference and inner bone rods matched in the outer bone rods, one end of each outer bone rod is hinged to the outer sleeve, one end of each inner bone rod is hinged to the driving guide pipe, each inner bone rod is hinged to the middle of the corresponding outer bone rod, and the skeleton structure is in a horn shape after being expanded;

the telescopic cover net is connected to the outer side of the framework structure, meshes of the telescopic cover net are in an isosceles trapezoid shape, the size of the meshes arranged on the telescopic cover net is gradually reduced from one end of the outer sleeve to one end of the bell mouth, and after the framework structure is folded, the outer size of the telescopic cover net is not larger than the outer diameter of the outer sleeve;

the inner surface equipartition of flexible cover net has the fender structure that separates that is used for carrying out the separation to tiny particle thrombus, it is little arch or little recess to separate the fender structure.

As preferred, spout the medicine subassembly and include that a plurality of goes out the pencil, these play pencils pass through fixed the setting of pipe cover on outer bone pole and interior bone pole, the other end that goes out the pencil is connected with the support frame, install on the support frame and spout the pencil, support frame fixed connection with on the outer bone pole, just the one end that goes out the pencil connect in drive catheter last, and with drive catheter's drainage chamber is connected, the other end warp of going out the pencil the support frame carry the liquid medicine extremely in the pencil.

Preferably, the support frame is a rectangular frame structure made of pipes, the medicine spraying head is rotatably mounted on the longer side of the rectangular frame structure through a sealing bearing, a straight pipe connected with the medicine outlet pipe is integrally connected to the middle position of the other longer side of the rectangular frame structure, and the straight pipe is fixedly connected to the outer bone rod;

the pesticide spraying head is a hollow sphere, a plurality of uniformly distributed blades are arranged on the surface of the sphere along the meridian direction of the sphere, the surface of the pesticide spraying head is divided into a plurality of fan-shaped cambered surfaces with equal size by the blades, a plurality of pesticide spraying holes penetrating through the inner part of the inner sphere are formed in the fan-shaped cambered surfaces which are arranged at intervals, the blades are crescent-shaped, and the top surface of the crescent shape is an arc surface;

the support frame stretches into set up a plurality of medicine mouths that are used for making the liquid medicine pour into on the inside pipeline section of medicine spraying head.

Preferably, the telescopic driving unit comprises a motor and a threaded driving pipe, an output shaft end of the motor is connected with the threaded driving pipe through a gear transmission mechanism, one end of the threaded driving pipe extends into the console and is connected with the medicine inlet pipe through a rotary sealing connecting piece, the other end of the medicine inlet pipe extends to the outer side of the console, threads of the threaded driving pipe are located on the outer side wall of the threaded driving pipe, and the threaded driving pipe is in threaded connection with the driving guide pipe through threads on the outer side wall;

the gear transmission mechanism is positioned in the console and comprises a first gear and a second gear which are meshed and connected with each other, the first gear is fixedly arranged at the output shaft end of the motor, and the second gear is fixedly arranged on the outer side of the thread driving pipe.

Preferably, the cross section of the active slot is a regular polygon, and the number of sides of the regular polygon is equal to the number of the internal bone rods.

Has the advantages that:

1. in the vein, the blood is filtered through the filter assembly, so that thrombus in the blood is blocked;

2. the front end of the filtering component is provided with the circumferentially distributed drug spraying heads which can spray and melt thrombus in blood;

3. through the rapid opening and closing of the filtering component, the deposited plasma can be pushed to move towards the opening end of the bell mouth, so that the plasma can be fully fused with the liquid medicine sprayed by the medicine spraying head, and the dissolving rate of thrombus is further improved;

4. can strike off the thrombus on the vascular wall to accessible filtering component realizes getting out to the clamp of unable dissolved thrombus.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a perspective view of the filter assembly of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is an enlarged view of the spray head and the support of the present invention;

fig. 7 is a partially broken away schematic view of fig. 6.

The reference numerals are explained below: 1. an outer sleeve; 1a, a movable groove; 2. a console; 3. a telescopic driving unit; 3a, a motor; 3b, a first gear; 3c, a second gear; 3d, driving the pipe by using threads; 4. a drive conduit; 5. a filter assembly; 6. a telescopic net; 6a, a blocking structure; 7. a framework structure; 7a, an external bone rod; 7b, an inner bone rod; 8. a support frame; 8a, a medicine outlet; 9. a medicine inlet pipe; 10. a pesticide spraying head; 10a, a blade; 10b, a spraying hole; 11. a medicine outlet pipe; 12. a pipe fixing sleeve; 13. and (4) folding line grooves.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Referring to fig. 1-7, the invention provides a lower vena cava thrombus filter convenient for thrombus ablation, which comprises anouter sleeve 1, wherein one end of theouter sleeve 1 is provided with acontrol platform 2, the other end of theouter sleeve 1 is provided with afiltering component 5 for filtering thrombus, adriving catheter 4 for driving thefiltering component 5 to be opened and closed is arranged in theouter sleeve 1, when thefiltering component 5 is opened, the shape of thefiltering component 5 is horn-shaped, the horn mouth of the filtering component faces the coming direction of blood flow, the state is used for realizing the blocking and filtering of thrombus in the blood, when thefiltering component 5 is folded, the shape of thefiltering component 5 is cylindrical, thefiltering component 5 is convenient to enter and exit from the lower vena cava, a movable groove 1a is arranged in theouter sleeve 1, thedriving catheter 4 is slidably sleeved in the movable groove 1a, and thedriving catheter 4 is driven by atelescopic driving unit 3, realize the axial displacement inouter sleeve pipe 1, the front end opening part offilter component 5 is provided with the medicine subassembly that spouts that is used for spouting the medicine, whenfilter component 5 struts, carries out the medicine through spouting thrombus in the medicine subassembly blood and sprays to make partial thrombus be melted.

As an important embodiment of the present invention, thefiltering assembly 5 includes aframework structure 7 and atelescopic sleeve 6 disposed outside theframework structure 7, theframework structure 7 is used to expand and close thetelescopic sleeve 6, thetelescopic sleeve 6 can filter blood, and small thrombus is prevented from leaking from a gap between theouter bone rod 7a and theinner bone rod 7 b;

specifically, as shown in fig. 3, theskeleton structure 7 includesouter bone pole 7a thatouter sleeve pipe 1 was the central circumference equipartition more than six and matches theinterior bone pole 7b inouter bone pole 7a, the one end ofouter bone pole 7a is articulated toouter sleeve pipe 1 on, the one end ofinterior bone pole 7b is articulated extremely on thedrive pipe 4, everyinterior bone pole 7b is articulated each other with correspondingouter bone pole 7a middle part position, be the loudspeaker form afterskeleton structure 7 struts, through the axial displacement ofdrive pipe 4, drive articulatedinterior bone pole 7b and promoteouter bone pole 7a and outwards strut, form the loudspeaker form, whendrive pipe 4 reverse movement, driveouter bone pole 7a throughinterior bone pole 7b and receive to middle receipts to realize that the strut ofskeleton structure 7 receives the action with receipts to receive in the middle.

Thetelescopic cover net 6 is connected with the outer side of theframework structure 7, meshes of thetelescopic cover net 6 are in an isosceles trapezoid shape, thus not only being convenient for processing thetelescopic sleeve net 6, but also ensuring that the passing rate of blood passing through thetelescopic sleeve net 6 reaches the maximum, and the mesh size arranged on thetelescopic sleeve net 6 is gradually reduced from one end of theouter sleeve 1 to one end of the bell mouth, the bell mouth is convenient for guiding blood, while the mesh with gradually decreasing size is used for filtering and collecting the thrombus in the passing blood, thereby leading the blocked thrombus to be collected at the tail end of the bell mouth as much as possible, avoiding the thrombus being extruded out when thetelescopic sleeve net 6 is folded, after theframework structure 7 is folded, the outer size of thetelescopic sleeve net 6 is not larger than the outer diameter of theouter sleeve 1, so that thetelescopic sleeve net 6 can smoothly exit from the inferior vena cava after being folded.

Preferably, as shown in fig. 5, the inner surface of thetelescopic sleeve 6 is uniformly distributed with a blockingstructure 6a for blocking the fine particle thrombus, and the blockingstructure 6a is a small protrusion or a small groove through which blood passes.

As a preferred embodiment of the present application, as shown in fig. 6-7, the drug spraying assembly includes a plurality of drug outlet pipes 11, the drug outlet pipes 11 are fixedly disposed on an outer bone rod 7a and an inner bone rod 7b through pipe fixing sleeves 12, the other ends of the drug outlet pipes 11 are connected to a support frame 8, the support frame 8 is mounted with drug spraying heads 10, in practical applications, the drug spraying heads 10 are circumferentially and uniformly arranged at the front end of the filter assembly 5, when the filter assembly 5 is unfolded, the circumferential multi-angle drug spraying on thrombus can be realized, the melting speed of thrombus is increased, the support frame 8 is fixedly connected to the outer bone rod 7a, one ends of the drug outlet pipes 11 are connected to the driving conduit 4 and connected to a liquid guiding cavity of the driving conduit 4, the other ends of the drug outlet pipes 11 convey drug liquid into the drug spraying heads 10 through the support frame 8, the drug liquid in the drug inlet pipes 9 enters the driving conduit 4 through a threaded driving pipe 3d, the liquid medicine is sent into each medicine outlet pipe 11 by the driving catheter 4 and is finally sprayed out by the medicine spraying head 10, and the liquid medicine in the medicine inlet pipe 9 is liquid medicine with certain pressure, so that the liquid medicine sprayed out by the medicine spraying head 10 can penetrate through blood flow to reach the central part of the blood vessel so as to ensure the effective combination with thrombus passing through the central part of the blood vessel.

Specifically, thesupport frame 8 is a rectangular frame structure made of pipes, themedicine spraying head 10 is rotatably installed on the longer side of the rectangular frame structure through a sealing bearing, the middle position of the other longer side of the rectangular frame structure is integrally connected with a straight pipe connected with themedicine outlet pipe 11, and the straight pipe is fixedly connected to theouter bone rod 7 a.

The medicine spraying head 10 is a hollow sphere, a plurality of uniformly distributed blades 10a are arranged on the surface of the sphere along the meridian direction, the blades 10a divide the surface of the medicine spraying head 10 into a plurality of fan-shaped arc surfaces with equal size, a plurality of medicine spraying holes 10b penetrating the inner part of the sphere are formed in the fan-shaped arc surfaces arranged at intervals, the blades 10a are crescent-shaped, the top surface of the crescent-shaped arc surfaces is an arc surface, when blood flows through the medicine spraying head 10, an impact force is caused to the blades 10a, so that the medicine spraying head 10 is driven to rotate by the blades 10a, the medicine spraying head 10 rotates around a support frame 8, multi-angle and multi-direction spraying of liquid medicine is realized, the amount of fused thrombus is greatly improved, meanwhile, when the filtering component 5 enters a blood vessel, the rotating medicine spraying head 10 can scrape the thrombus adhered to the blood vessel wall by the blades 10a, the rotating outer sleeve 1 drives the front-end filtering component 5 to rotate forwards, not only facilitates the feeding of the filter assembly 5 along the blood vessel, but also can scrape the thrombus on the blood vessel wall through the blades 10a on the medicine spraying head 10.

Thesupport frame 8 stretches into set up a plurality of medicines liquid that are used for on the inside pipeline section ofmedicine spray head 10 and pour into medicine liquidmedicine spray head 10 inside goes outmedicine mouth 8a, and the medicine liquid that gets into in thesupport frame 8 through going outmedicine pipe 11 can get into the spheroid inside ofmedicine spray head 10 through going outmedicine mouth 8a to spout throughmedicine spraying hole 10b finally.

Thetelescopic driving unit 3 comprises amotor 3a and athread driving pipe 3d, themotor 3a is controlled by theconsole 2 to rotate forward and backward and rotate at a rotating speed, theconsole 2 is provided with corresponding buttons, which is convenient for medical staff to operate, the output shaft end of themotor 3a is connected with thethread driving pipe 3d through a gear transmission mechanism, one end of thethread driving pipe 3d extends into theconsole 2 and is connected with themedicine inlet pipe 9 through a rotary sealing connecting joint, the other end of themedicine inlet pipe 9 extends to the outer side of theconsole 2, themedicine inlet pipe 9 is connected with a pressurizing medicine box, an electromagnetic valve for controlling the on-off of the medicine liquid in themedicine inlet pipe 9 is arranged in theconsole 2, thereby controlling the on-off of the electromagnetic valve through the operating button on theconsole 2 to realize the on-off of the liquid medicine in thefeeding pipe 9, the thread of the threadeddrive tube 3d is located on its outer side wall, and the threadeddrive tube 3d is in threaded connection with thedrive conduit 4 by means of the thread on this outer side wall.

The gear transmission mechanism is positioned in theconsole 2 and comprises afirst gear 3b and asecond gear 3c which are meshed with each other, thefirst gear 3b is fixedly arranged at the output shaft end of themotor 3a, thesecond gear 3c is fixedly arranged at the outer side of thethread driving pipe 3d, themotor 3a drives thefirst gear 3b to rotate, and therefore thesecond gear 3c drives thethread driving pipe 3d to rotate, and finally the lifting of the drivingguide pipe 4 in the movable groove 1a is achieved.

Regular polygon of activity groove 1 a's cross-section, and this regular polygon's limit number withinterior bone pole 7 b's quantity equals, drivepipe 4 and regular polygon's activity groove 1a looks adaptation, thereby avoidscrew drive tube 3d when rotatory, it is rotatory to drivepipe 4, and then realizedrive pipe 4's axial displacement, simultaneously, because every 11 front ends of play pencil all fix oninterior bone pole 7b, the quantity ofplay pencil 11 equals withinterior bone pole 7 b's quantity, through setting up thedrive pipe 4 outside to regular polygon, make its lateral wall be the plane, thereby be convenient for realize going outpencil 11 and being connected ofdrive pipe 4.

Referring to the attached drawing 1 in the specification, abroken line groove 13 is formed in the outer side of thetelescopic sleeve 6, which is close to the space between the twoexoskeleton bars 7a, and in practical application, when the exoskeleton bars 7a retract inwards, thetelescopic sleeve 6 can be folded along thebroken line groove 13, so that thetelescopic sleeve 6 can retract conveniently.

By adopting the structure, when in use, one end of the outer sleeve 1 with the filtering component 5 is placed into the inferior vena cava by adopting the puncture technology, the output shaft of the motor 3a of the telescopic driving unit 3 rotates to drive the first gear 3b to rotate and drive the screw thread driving tube 3d to rotate through the meshed second gear 3c, the driving catheter 4 moves along the axial direction in the movable groove 1a in the rotating process of the screw thread driving tube 3d, thereby driving the hinged inner bone rod 7b to push the outer bone rod 7a to expand outwards to form a horn shape, the inner bone rod 7b, the outer bone rod 7a and the telescopic sleeve 6 are matched to realize the filtering of thrombus, the thrombus filtered in the blood vessel is monitored by virtue of the radiography technology, when the thrombus exists in the blood passing through the filtering component 5, the medicine inlet tube 9 is opened, so that the medicine liquid is sprayed into the blood by the medicine spraying head 10, thereby the thrombus is melted, in the process, still can just reverse through control motor 3a, make filtering component 5 realize opening and shutting fast, at the in-process that opens and shuts, make the thrombus of deposit in the horn mouth afterbody pushed to the horn mouth opening direction, thereby make medicine liquid that spouts medicine head 10 spun fully contact with the thrombus that is pushed once more, dissolve with higher speed thrombus, in this process, continue to monitor blood, if the thrombus still does not melt, accessible flexible drive unit 3 control drive pipe 4 slowly moves, drive filtering component 5 and receive slowly, including the thrombus parcel through flexible cover net 6, receive the in-process, the fender structure 6a on flexible cover net 6 surface can separate the thrombus, avoid the thrombus to run out filtering component 5, after filtering component 5 closed, take out the vena cava with outer tube 1 and filtering component 5, get rid of the thrombus can.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (6)

1. The utility model provides an inferior vena cava thrombus filter convenient to thrombus melts which characterized in that: including outer tube (1), the one end of outer tube (1) is provided with controls platform (2), the other end of outer tube (1) is provided with and is used for realizing carrying out filterable filter assembly (5) to the thrombus, be provided with in outer tube (1) and be used for driving filter assembly (5) to strut with the drive pipe (4) of closing, movable groove (1 a) has been seted up in the outer tube, drive pipe (4) slide to cup joint in movable groove (1 a), drive pipe (4) are driven by flexible drive unit (3), realize the axial displacement in outer tube (1), the front end opening part of filter assembly (5) is provided with the medicine subassembly that spouts that is used for spouting the medicine.

2. An inferior vena cava thrombus filter for facilitating thrombus ablation according to claim 1, wherein: the filtering component (5) comprises a framework structure (7) and a telescopic sleeve net (6) arranged on the outer side of the framework structure (7);

the framework structure (7) comprises more than six outer bone rods (7 a) which are uniformly distributed on the circumference of the outer sleeve (1) as the center and inner bone rods (7 b) which are matched with the outer bone rods (7 a), one end of each outer bone rod (7 a) is hinged to the outer sleeve (1), one end of each inner bone rod (7 b) is hinged to the driving guide pipe (4), each inner bone rod (7 b) is hinged to the middle of the corresponding outer bone rod (7 a), and the framework structure (7) is flared after being unfolded;

the telescopic cover net (6) is connected to the outer side of the framework structure (7), meshes of the telescopic cover net (6) are isosceles trapezoids, the sizes of the meshes arranged on the telescopic cover net (6) are gradually reduced from one end of the outer sleeve (1) to one end of the bell mouth, and after the framework structure (7) is folded, the outer size of the telescopic cover net (6) is not larger than the outer diameter of the outer sleeve (1);

the inner surface equipartition of flexible cover net (6) has and is used for carrying out the separation to tiny particle thrombus and keeps off structure (6 a), it is little arch or little recess to keep off structure (6 a) to separate.

3. An inferior vena cava thrombus filter for facilitating thrombus ablation according to claim 2, wherein: spout the medicine subassembly and include that a plurality of goes out pencil (11), these go out pencil (11) through fixed cover (12) of pipe fixed set up on outer bone pole (7 a) and interior bone pole (7 b), the other end that goes out pencil (11) is connected with support frame (8), install on support frame (8) and spout medicine head (10), support frame (8) fixed connection with on outer bone pole (7 a), just the one end that goes out pencil (11) connect in drive pipe (4) are last, and with the drain chamber of drive pipe (4) is connected, the other end warp of play pencil (11) support frame (8) carry the liquid medicine extremely in spouting medicine head (10).

4. An inferior vena cava thrombus filter for facilitating thrombus ablation according to claim 3, wherein: the support frame (8) is a rectangular frame structure made of pipes, the medicine spraying head (10) is rotatably installed on the longer side of the rectangular frame structure through a sealing bearing, the middle position of the other longer side of the rectangular frame structure is integrally connected with a straight pipe connected with the medicine outlet pipe (11), and the straight pipe is fixedly connected to the outer bone rod (7 a);

the medicine spraying head (10) is a hollow sphere, a plurality of uniformly distributed blades (10 a) are arranged on the surface of the sphere along the meridian direction of the sphere, the blades (10 a) divide the surface of the medicine spraying head (10) into a plurality of fan-shaped arc surfaces with equal size, a plurality of medicine spraying holes (10 b) penetrating through the inner part of the inner sphere are formed in the fan-shaped arc surfaces which are arranged at intervals, the blades (10 a) are crescent, and the top surface of the crescent is an arc surface;

the support frame (8) stretches into a plurality of medicine outlets (8 a) used for pouring the medicine liquid into the medicine spraying head (10) are formed in the pipe section in the medicine spraying head (10).

5. An inferior vena cava thrombus filter for facilitating thrombus ablation according to claim 4, wherein: the telescopic driving unit (3) comprises a motor (3 a) and a thread driving pipe (3 d), the output shaft end of the motor (3 a) is connected with the thread driving pipe (3 d) through a gear transmission mechanism, one end of the thread driving pipe (3 d) extends into the console (2) and is connected with the medicine inlet pipe (9) through a rotary sealing connecting joint, the other end of the medicine inlet pipe (9) extends to the outer side of the console (2), the thread of the thread driving pipe (3 d) is positioned on the outer side wall of the thread driving pipe, and the thread driving pipe (3 d) is in threaded connection with the driving conduit (4) through the thread on the outer side wall;

the gear transmission mechanism is positioned in the console (2), the gear transmission mechanism comprises a first gear (3 b) and a second gear (3 c) which are meshed and connected with each other, the first gear (3 b) is fixedly arranged at the output shaft end of the motor (3 a), and the second gear (3 c) is fixedly arranged on the outer side of the threaded driving pipe (3 d).

6. An inferior vena cava thrombus filter for facilitating thrombus ablation according to claim 5, wherein: the cross section of the movable groove (1 a) is a regular polygon, and the number of the sides of the regular polygon is equal to the number of the internal bone rods (7 b).

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