CN110314272B - Thrombus aspiration catheter with telescopic thrombus block crushing assembly - Google Patents

Abstract

Translated fromChinese

本发明涉及一种具有伸缩式血栓块破碎组件的血栓抽吸导管，包括抽吸管、多通道管座以及破碎组件，抽吸管的内管与外管之间形成环形注药通道，多通道管座由主管体、注药支管和抽吸支管构成，破碎组件包括控制通道管、转轴、控制杆和破碎单元，转轴穿设在控制通道管内，破碎单元包括第一套筒、第二套筒以及破碎杆，破碎杆由两根头端铰接在一起的杆体构成，两根杆体的尾端分别铰接在第一套筒和第二套筒上，第一套筒固定套设在转轴上，第二套筒滑动套设在转轴上。当遇到有体积大及高粘稠的血栓时，将破碎组件展开，通过破碎组件可以将大块的血栓打碎，以便顺利进入抽吸管内可同时进行破碎操作和抽吸操作，工作效率高。

The invention relates to a thrombus suction catheter with a telescopic thrombus block breaking assembly, comprising a suction tube, a multi-channel tube seat and a breaking assembly. An annular drug injection channel is formed between the inner tube and the outer tube of the suction tube, and the multi-channel The pipe base is composed of the main body, the injection branch pipe and the suction branch pipe. The crushing component includes a control channel pipe, a rotating shaft, a control rod and a crushing unit. And the crushing rod, the crushing rod is composed of two rod bodies whose head ends are hinged together, the tail ends of the two rod bodies are respectively hinged on the first sleeve and the second sleeve, the first sleeve is fixedly sleeved on the rotating shaft, and the first sleeve is fixed on the rotating shaft. The two sleeves are slidably sleeved on the rotating shaft. When encountering a large and highly viscous thrombus, unfold the crushing component, and the large thrombus can be broken through the crushing component, so that it can enter the suction tube smoothly, and the crushing operation and the suction operation can be performed at the same time, and the work efficiency is high. .

Description

Thrombus aspiration catheter with telescopic thrombus block crushing assembly

Technical Field

The invention relates to the technical field of medical instruments, in particular to a thrombus suction catheter with a telescopic thrombus block crushing assembly.

Background

Acute Myocardial Infarction (AMI) is that on the basis of coronary artery pathological changes, coronary artery blood supply is sharply reduced or interrupted, so that corresponding myocardium is seriously and durably subjected to acute ischemia to cause myocardial necrosis, the AMI is extremely dangerous to occur, and the fatal disability rate is high. Since atherosclerosis is the pathological basis for acute cardiovascular and cerebrovascular events, the main causes of acute cardiovascular events are local atherosclerotic plaque rupture and thrombosis, and thrombosis depends on the vulnerability of the atherosclerotic plaque, which is prone to plaque rupture and thrombosis, resulting in the occurrence of acute coronary syndrome.

The thrombus suction is a new method applied to clinic in recent years, and aims to quickly draw out thrombus blocking a diseased blood vessel through mechanical action, theoretically reduce thrombus load and microvascular embolism, change blood flow of coronary artery, reduce incidence rate of postoperative 'slow blood flow' and 'no-reflow', and further verify clinically, through a thrombus suction catheter and by combining with medicaments, the incidence rate of no-reflow can be obviously reduced, the blood flow of a target blood vessel is improved, clinical prognosis is improved, good near-term and far-term effects are achieved for treating patients suffering from acute myocardial infarction, and after the thrombus suction is applied, a stent can be directly implanted in cases with 2/3 without balloon pre-expansion, so that medical cost is saved.

The thrombus suction is mainly divided into a manual thrombus suction catheter and a mechanical thrombus suction device, and the principle of manual suction of the manual thrombus suction catheter is to suck out thrombus by using negative pressure generated by suction of an injector. The suction device consists of basic components such as a suction duct, a pressure extension tube, a suction syringe, a suction filter screen and the like, wherein the suction duct is generally provided with a lockable joint or a tee joint. Mechanical thrombus suction devices can be divided into two main categories according to the working principle: one is the removal of thrombi (such as Rescue and TVAC) by negative pressure suction with a mechanical vacuum pump, similar in principle to a manual thrombi aspiration catheter, except that the negative pressure suction is generated by a mechanical vacuum pump. While negative pressure is continuously formed, the thrombus is sucked by slowly pushing and withdrawing the catheter. The other type of mechanical thrombus aspiration device is used for mechanically crushing and discharging thrombus out of the body, and can be divided into mechanical rotary cutting and fluid crushing according to different thrombus crushing mechanisms.

For example, patent application No. CN102319097A discloses a thrombus aspiration catheter, which comprises a catheter tube seat connecting catheter, wherein a sleeve is movably sleeved on the outer wall of the aspiration tube, the sleeve comprises a Y-shaped connector, a double-cavity tube and a balloon, the Y-shaped connector is connected with the double-cavity tube, and the balloon is arranged on the outer wall of the far end of the double-cavity tube; an interference wire may be inserted into the aspiration tube, with a distal end of the interference wire extending beyond the distal end of the aspiration tube. The suction catheter can rapidly remove thrombus spread in a wide area of a blood vessel and treat embolism of coronary peripheral microvasculature; when thrombus with large volume and high viscosity is encountered, the interference metal wire can be used for scattering the thrombus and then sucking the thrombus, so that the thrombus which is difficult to suck can be treated by the invention. Although the technical scheme solves the problems of large suction volume and high viscosity thrombus, certain defects still exist. First, the head end of the suction tube is a beveled opening, which is convenient for the puncture of the suction tube to enter, but also has the risk of misoperation and puncture of the head end to the blood vessel. Secondly, the operation of breaking up the thrombus and the suction operation can not be carried out simultaneously, the operation of breaking up the thrombus can not be carried out during suction, the suction can not be carried out during the breaking up of the thrombus, the parts need to be frequently replaced between the two operations, the operation is complex, and the suction efficiency is low.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a thrombus suction catheter with a telescopic thrombus mass breaking assembly.

In order to solve the technical problems, the invention provides the following technical scheme: a thrombus suction catheter with a telescopic thrombus block crushing assembly comprises a suction tube, a multi-channel tube seat and a crushing assembly, wherein the suction tube is composed of an inner tube and an outer tube, an annular medicine injection channel is formed between the inner tube and the outer tube, a medicine outlet hole is formed in a tube body of the outer tube close to a head end, the tail ends of the inner tube and the outer tube are arranged in a sealed mode, the multi-channel tube seat is composed of a main tube body, a medicine injection branch tube and a suction branch tube, the medicine injection branch tube and the suction branch tube are symmetrically arranged on the side wall of the main tube body, the main tube body is sleeved at the tail part of the suction tube, the head end of the medicine injection branch tube is communicated with the annular medicine injection channel, the suction branch tube is communicated with the inner part of the inner tube, the crushing assembly comprises a control channel tube, a rotating shaft, a control rod and a crushing unit, the control channel tube penetrates, the pivot is worn to establish in the control channel is intraductal, and crushing unit includes first sleeve, second sleeve and crushing pole, and crushing pole comprises the body of rod that two head ends are articulated together, and the tail end of the two bodies of rod articulates respectively on first sleeve and second sleeve, and the fixed cover of first sleeve is established in the pivot, and second sleeve slip cover is established in the pivot, and the control lever is used for driving the axial displacement of second sleeve along the pivot.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the pivot is the cavity axis body, and the lateral wall symmetry of pivot is provided with two rectangular shape through-holes, and the control lever wears to establish in the pivot, and the head end of control lever is provided with the connecting rod, and the both ends of connecting rod pass the rectangular shape through-hole in both sides respectively and are connected with second sleeve inner wall.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the tail end of the rotating shaft is provided with a control handle in a rotating mode through threaded connection, the lower end of the control handle is provided with a ball groove, the tail end of the control rod is provided with a ball head, and theball head 3/4 of the control rod is partially embedded into the ball groove.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the head end of the suction pipe is of a flat-head structure, and the crushing unit comprises two crushing rods which are symmetrically arranged.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the head end of the suction pipe is of a beveling structure, and the crushing assembly further comprises a top cover arranged at the head end of the rotating shaft.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the control channel pipe is a reducing pipe body, and the head end of the control channel pipe is an expanding pipe body and used for accommodating the crushing unit.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the side wall of the outer tube close to the head end is provided with a medicine outlet hole.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the end of the outer tube is provided with a plurality of medicine outlet holes which are distributed annularly.

As a further optimization of the thrombus aspiration catheter with the telescopic thrombus mass fragmentation assembly of the present invention: the medicine injection branch pipe and the suction branch pipe are arranged at an included angle of 60 degrees with the main pipe body.

Advantageous effects

The thrombus suction catheter is provided with the contractible thrombus crushing assembly, the crushing assembly is contracted in the suction catheter during normal suction, suction operation cannot be influenced, when thrombus with large volume and high viscosity is encountered, the crushing assembly is unfolded, and massive thrombus can be crushed by the crushing assembly so as to smoothly enter the suction catheter;

secondly, the thrombus suction catheter is designed with the top cover, the top cover can avoid damaging blood vessels in the process of placing the suction tube, and the safety coefficient is high.

Drawings

FIG. 1 is a schematic view showing the construction of a thrombus aspiration catheter (the crushing assembly is in a contracted state) according to example 1;

FIG. 2 is a schematic view showing the construction of a thrombus aspiration catheter (with the crushing assembly in an extended state) according to example 1;

FIG. 3 is a schematic view showing the construction of a thrombus aspiration catheter (in a crushed state by the crushing assembly) in example 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

FIG. 6 is a schematic view showing the construction of a thrombus aspiration catheter (the crushing assembly is in a contracted state) according to example 2;

FIG. 7 is a schematic view showing the construction of a thrombus aspiration catheter (in a crushed state by the crushing assembly) in example 2;

FIG. 8 is an enlarged partial view of the thrombus aspiration catheter of example 3 at the aspiration tip;

FIG. 9 is a schematic view showing the connection of the control rod and the second sleeve of the thrombus aspiration catheter in accordance with example 1;

the labels in the figure are: 1. the device comprises a suction pipe, 2 parts of a multi-channel pipe seat, 3 parts of a crushing assembly, 1-1 part of an inner pipe, 1-2 parts of an outer pipe, 1-3 parts of a medicine outlet hole, 2-1 part of a main pipe body, 2-2 parts of a medicine injection branch pipe, 2-3 parts of a suction branch pipe, 3-1 part of a control channel pipe, 3-2 parts of a rotating shaft, 3-3 parts of a top cover, 3-4 parts of a control rod, 3-5 parts of a first sleeve, 3-6 parts of a second sleeve, 3-7 parts of a crushing rod, 3-8 parts of a long-strip-shaped through hole, 3-9 parts of a connecting rod, 3-10 parts of a.

Detailed Description

The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.

Example 1

As shown in the figure: the utility model provides a thrombus suction catheter with broken subassembly of telescopic thrombus piece, includessuction tube 1,multichannel tube socket 2 andbroken subassembly 3, in patient's artery can be put into to the head end ofsuction tube 1,multichannel tube socket 2 is connected at the afterbody ofsuction tube 1 for to carrying out the operation of notes medicine, thrombus suction and crushing function in thesuction tube 1,broken subassembly 3 is used for smashing the thrombus of bulky high ropy. Thesuction tube 1 is composed of an inner tube 1-1 and an outer tube 1-2, the head ends and the tail ends of the inner tube 1-1 and the outer tube 1-2 are sealed through ring plates, an annular medicine injection channel is formed between the inner tube 1-1 and the outer tube 1-2, a medicine outlet 1-3 is formed in the side wall of the outer tube 1-2 close to the head ends, and thrombolytic medicines in the annular medicine injection channel enter the artery of a patient through the medicine outlet 1-3. Themulti-channel tube seat 2 is composed of a main tube body 2-1, a medicine injection branch tube 2-2 and a suction branch tube 2-3, the medicine injection branch tube 2-2 and the suction branch tube 2-3 are symmetrically arranged on the side wall of the main tube body 2-1, an included angle of 60 degrees is formed between the medicine injection branch tube 2-2 and the suction branch tube 2-3 and the main tube body 2-1, the main tube body 2-1 is sleeved at the tail of thesuction tube 1, the tail end of thesuction tube 1 extends out of the main tube body 2-1, the head end of the medicine injection branch tube 2-2 is communicated with the annular medicine injection channel, the suction branch tube 2-3 is communicated with the inner part of the inner tube 1-1, thrombolytic medicines can be input into the annular medicine injection channel through the medicine injection branch tube 2-2, and thrombus extracted from the inner tube 1-1 can. Thecrushing assembly 3 comprises a control channel pipe 3-1, a rotating shaft 3-2, a control rod 3-4 and a crushing unit, wherein the control channel pipe 3-1 penetrates through the inner pipe 1-1 along the axial direction of the inner pipe 1-1, the control channel pipe 3-1 is a reducing pipe body, and the head end of the control channel pipe 3-1 is an expanding pipe body and used for accommodating the crushing unit. The head end of the control channel pipe 3-1 is connected with the inner pipe 1-1 through a support rib, the tail end of the control channel pipe 3-1 extends out of the tail part of thesuction pipe 1, and the position where the control channel pipe 3-1 penetrates out needs to be provided with some conventional sealing structures in order to prevent the leakage of suction liquid. The rotating shaft 3-2 penetrates through the control channel pipe 3-1, a conventional sealing structure is also arranged between the rotating shaft 3-2 and the control channel pipe 3-1 to prevent the pumping liquid from leaking from a gap between the rotating shaft 3-2 and the control channel pipe 3-1, the head end of thepumping pipe 1 is of a flat head structure, the crushing unit comprises two crushing rods 3-7 which are symmetrically arranged, the top cover 3-3 is of a horn-shaped structure, the large-diameter end of the top cover 3-3 is fixedly connected with the head end of the rotating shaft 3-2, and the horn-shaped structure of the top cover 3-3 is beneficial to thepumping pipe 1 to move in an artery. The crushing unit comprises a first sleeve 3-5, a second sleeve 3-6 and a crushing rod 3-7, wherein the crushing rod 3-7 is composed of two rod bodies with hinged head ends, the tail ends of the two rod bodies are respectively hinged to the first sleeve 3-5 and the second sleeve 3-6, the first sleeve 3-5 is fixedly sleeved on the rotating shaft 3-2, the second sleeve 3-6 is slidably sleeved on the rotating shaft 3-2, the control rod 3-4 is used for driving the second sleeve 3-6 to move along the axial direction of the rotating shaft 3-2, the tail end of the rotating shaft 3-2 extends out of the control channel pipe 3-1 and is arranged to push and pull the rotating shaft 3-2, and the crushing unit can move along the axial direction of the control channel pipe 3-1.

The second sleeve 3-6 performs the control of the sliding by the following structure: the rotating shaft 3-2 is a hollow shaft body, two elongated through holes 3-8 are symmetrically formed in the side wall of the rotating shaft 3-2, the control rod 3-4 penetrates through the rotating shaft 3-2, the connecting rod 3-9 is arranged at the head end of the control rod 3-4, and two ends of the connecting rod 3-9 penetrate through the elongated through holes 3-8 in the two sides respectively to be connected with the inner wall of the second sleeve 3-6. The tail end of the rotating shaft 3-2 is provided with a control handle 3-10 in a screwed mode through threaded connection, the lower end head of the control handle 3-10 is provided with a ball groove, the tail end of the control rod 3-4 is provided with a ball head, and theball head 3/4 of the control rod 3-4 is partially embedded into the ball groove.

The structural principle and the using method of the thrombus suction catheter of the embodiment are as follows: through femoral artery or radial artery puncture, the head end of a suction tube is placed into an artery of a patient and reaches the occlusion part of a blood vessel, a suction device is started, an external negative pressure device is utilized to continuously suck negative pressure to suck thrombus into the suction tube and discharge the thrombus, when the thrombus with large volume and high viscosity is encountered, a rotating shaft is pushed to move forwards to enable a crushing unit to extend out of a control channel tube, then a control handle is rotated to push the control rod to move forwards, the control rod drives a second sleeve to move forwards, the crushing rod is unfolded along with the reduction of the distance between the first sleeve and the second sleeve, at the moment, a crushing rod piece is driven to rotate by manually rotating the rotating shaft back and forth to crush large-block thrombus, the crushed thrombus is directly sucked into the suction tube to be discharged, when the crushing is not needed, the control handle is rotated reversely to drive the control rod to move backwards, the control rod drives the second sleeve to move backwards, along with the distance between first sleeve and the second sleeve grow, broken pole is by shrink, then pulls out the pivot backward, and it can to make crushing unit take in the control channel pipe. When the medicine needs to be injected, the medicine injector is connected with the medicine injection branch pipe, the injector is pushed, the medicine enters the annular medicine injection channel and enters the blood vessel of a patient through the medicine outlet, and the medicine thrombolysis operation is carried out.

Example 2

As shown in the figure: a thrombus aspiration catheter with a retractable thrombus mass breaking assembly, the basic structure of which is the same as that of example 1 except that: the head end of thesuction pipe 1 is of a beveling structure, the crushingassembly 3 further comprises a top cover 3-3 arranged at the head end of the rotating shaft 3-2, thesuction pipe 1 of the beveling structure is provided with a large thrombus suction inlet, but when a sharp thorn formed by the beveling structure travels in a blood vessel, the sharp thorn end of the beveling structure easily scratches the blood vessel wall.

Example 3

As shown in the figure: a thrombus aspiration catheter with a retractable thrombus mass breaking assembly, the basic structure of which is the same as that of example 1 except that: the end of the outer tube 1-2 is provided with a plurality of drug outlet holes 1-3 which are distributed annularly, different from theembodiment 1, the drug outlet holes 1-3 of the embodiment are arranged on the end surface of the tube opening and arranged towards the suction direction, so that the drugs can directly reach the thrombus blockage position, and in order to prevent the injected drugs from being directly sucked into the suction tube, the suction operation is stopped during the drug injection process.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

Translated fromChinese

1.一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：包括抽吸管(1)、多通道管座(2)以及破碎组件(3)，所述抽吸管(1)由内管(1-1)和外管(1-2)构成，内管(1-1)与外管(1-2)之间形成环形注药通道，外管(1-2)靠近头端的管体上设置有出药孔(1-3)，内管(1-1)和外管(1-2)的尾端均封闭设置，所述多通道管座(2)由主管体(2-1)、注药支管(2-2)和抽吸支管(2-3)构成，注药支管(2-2)和抽吸支管(2-3)对称设置在主管体(2-1)的侧壁，主管体(2-1)套设在抽吸管(1)尾部，注药支管(2-2)头端与环形注药通道连通，抽吸支管(2-3)与内管(1-1)的内部连通，所述破碎组件(3)包括控制通道管(3-1)、转轴(3-2)、控制杆(3-4)和破碎单元，控制通道管(3-1)沿内管(1-1)的轴线方向穿设在内管(1-1)的内部，控制通道管(3-1)的头端通过支撑筋条与内管(1-1)连接，控制通道管(3-1)的尾端伸出内管(1-1)设置，所述转轴(3-2)穿设在控制通道管(3-1)内，破碎单元包括第一套筒(3-5)、第二套筒(3-6)以及破碎杆(3-7)，破碎杆(3-7)由两根第一端铰接在一起的杆体构成，两根杆体的第二端分别铰接在第一套筒(3-5)和第二套筒(3-6)上，第一套筒(3-5)固定套设在转轴(3-2)上，第二套筒(3-6)滑动套设在转轴(3-2)上，控制杆(3-4)用于带动第二套筒(3-6)沿转轴(3-2)的轴向移动。1. A thrombus suction catheter with a telescopic thrombus fragmentation assembly, characterized in that it comprises a suction tube (1), a multi-channel tube seat (2) and a fragmentation assembly (3), the suction tube (1) ) consists of an inner tube (1-1) and an outer tube (1-2), an annular drug injection channel is formed between the inner tube (1-1) and the outer tube (1-2), and the outer tube (1-2) is close to The tube body at the head end is provided with a medicine outlet hole (1-3), the tail ends of the inner tube (1-1) and the outer tube (1-2) are closed and arranged, and the multi-channel tube seat (2) is formed by the main body (2-1), a medicine injection branch pipe (2-2) and a suction branch pipe (2-3), and the medicine injection branch pipe (2-2) and the suction branch pipe (2-3) are symmetrically arranged on the main body (2-3). 1), the main body (2-1) is sleeved on the tail of the suction pipe (1), the head end of the injection branch pipe (2-2) is connected with the annular injection channel, and the suction branch pipe (2-3) is connected to the The interior of the inner pipe (1-1) is communicated, and the crushing assembly (3) includes a control channel pipe (3-1), a rotating shaft (3-2), a control rod (3-4) and a crushing unit, and the control channel pipe ( 3-1) Passing through the interior of the inner tube (1-1) along the axial direction of the inner tube (1-1), the head end of the control channel tube (3-1) passes through the support ribs and the inner tube (1-1) ) connection, the tail end of the control channel pipe (3-1) protrudes out of the inner pipe (1-1), the rotating shaft (3-2) is penetrated in the control channel pipe (3-1), and the crushing unit includes the first A sleeve (3-5), a second sleeve (3-6) and a crushing rod (3-7), the crushing rod (3-7) is composed of two rod bodies whose first ends are hinged together, and the two rod bodies The second ends are hinged on the first sleeve (3-5) and the second sleeve (3-6) respectively, the first sleeve (3-5) is fixedly sleeved on the rotating shaft (3-2), the first sleeve (3-5) The second sleeve (3-6) is slidably sleeved on the rotating shaft (3-2), and the control rod (3-4) is used to drive the second sleeve (3-6) to move in the axial direction of the rotating shaft (3-2). .2.如权利要求1所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述转轴(3-2)为中空轴体，转轴(3-2)的侧壁对称设置有两个长条形通孔(3-8)，控制杆(3-4)穿设在转轴(3-2)内，控制杆(3-4)的头端设置有连接杆(3-9)，连接杆(3-9)的两端分别穿过两侧长条形通孔(3-8)与第二套筒(3-6)内壁连接。2 . The thrombus suction catheter with a telescopic thrombus fragmentation assembly according to claim 1 , wherein the rotating shaft (3-2) is a hollow shaft body, and the side wall of the rotating shaft (3-2) is a hollow shaft. 3 . Two elongated through holes (3-8) are symmetrically arranged, the control rod (3-4) is penetrated in the rotating shaft (3-2), and the head end of the control rod (3-4) is provided with a connecting rod (3 -9), the two ends of the connecting rod (3-9) are respectively connected to the inner wall of the second sleeve (3-6) through the elongated through holes (3-8) on both sides.3.如权利要求2所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述转轴(3-2)的尾端通过螺纹连接旋设有控制柄(3-10)，控制柄(3-10)下端头的端面设置有球槽，控制杆(3-4)的尾端设置有球头，控制杆(3-4)的球头3/4部分嵌入球槽内设置。3. A thrombus suction catheter with a telescopic thrombus fragmentation assembly as claimed in claim 2, characterized in that: a control handle (3- 10), the end face of the lower end of the control handle (3-10) is provided with a ball groove, the rear end of the control rod (3-4) is provided with a ball head, and the ball head 3/4 of the control rod (3-4) is partially embedded in the ball set in the slot.4.如权利要求1所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述抽吸管(1)的头端为平头结构，破碎单元包括对称设置的两根破碎杆(3-7)。4. A thrombus suction catheter with a telescopic thrombus fragmentation assembly according to claim 1, characterized in that: the head end of the suction tube (1) is a flat head structure, and the crushing unit comprises two symmetrically arranged thrombus suction catheters. Root Breaker Rod (3-7).5.如权利要求1所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述抽吸管(1)的头端为斜切结构，破碎组件(3)还包括设置在转轴(3-2)头端的顶盖(3-3)。5. A thrombus suction catheter with a telescopic thrombus fragmentation assembly according to claim 1, characterized in that: the head end of the suction tube (1) is a chamfered structure, and the fragmentation assembly (3) is further It includes a top cover (3-3) arranged at the head end of the rotating shaft (3-2).6.如权利要求1-5中任一权利要求所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述控制通道管(3-1)为变径管体，控制通道管(3-1)的头端为扩径管体，用于容纳破碎单元。6. The thrombus aspiration catheter with a telescopic thrombus fragmentation assembly according to any one of claims 1-5, wherein the control channel tube (3-1) is a reduced diameter tube body , the head end of the control channel pipe (3-1) is an enlarged diameter pipe body, which is used for accommodating the crushing unit.7.如权利要求1-5中任一权利要求所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述外管(1-2)靠近头端的侧壁上设置有出药孔(1-3)。7. A thrombus aspiration catheter with a telescopic thrombus fragmentation assembly according to any one of claims 1-5, characterized in that: the outer tube (1-2) is on the side wall near the head end A medicine dispensing hole (1-3) is provided.8.如权利要求1-5中任一权利要求所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述外管(1-2)的头端端部设置有呈环形分布的多个出药孔(1-3)。8. A thrombus aspiration catheter with a telescopic thrombus fragmentation assembly according to any one of claims 1-5, characterized in that: the head end of the outer tube (1-2) is provided with There are a plurality of drug discharge holes (1-3) distributed in an annular shape.9.如权利要求1-5中任一权利要求所述的一种具有伸缩式血栓块破碎组件的血栓抽吸导管，其特征在于：所述注药支管(2-2)和抽吸支管(2-3)与主管体(2-1)之间呈60°夹角设置。9. The thrombus suction catheter with a telescopic thrombus fragmentation assembly according to any one of claims 1-5, characterized in that: the medicine injection branch pipe (2-2) and the suction branch pipe ( 2-3) and the main body (2-1) at an angle of 60°.

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