CN210185650U

CN210185650U - Thrombus removal system

Info

Publication number: CN210185650U
Application number: CN201920714892.XU
Authority: CN
Inventors: Runting Tian; 田润亭; Min Ma; 马敏
Original assignee: Changzhou Three Run Medical Equipment Technology Co Ltd
Current assignee: Changzhou Three Run Medical Equipment Technology Co Ltd
Priority date: 2019-05-19
Filing date: 2019-05-19
Publication date: 2020-03-27
Anticipated expiration: 2029-05-19

Abstract

The utility model relates to a thrombus clearance system is applicable to and clears away foreign matter such as endovascular thrombus, thrombus piece, blood clot, blood lipid plaque, atherosclerosis thing, also is applicable to and clears away the vascular thrombus of placing the intravascular stent internal surface formation of human body and arouse vascular endothelial hyperplasia. Comprises a thrombus removing device and an operating handle part; the thrombus removing device is connected with the operating handle part through a rear catheter; the thrombus removing device comprises a puncture head, a guide wire, a front guide pipe, a middle guide pipe, a front sleeve, a front balloon catheter, a front support sleeve, a front collecting basket, a front thrombus cutter, a front guide pipe and middle guide pipe telescopic connecting mechanism, a middle guide pipe and rear guide pipe telescopic connecting pipe, a rear guide pipe sleeve, a rear balloon catheter, a rear support sleeve, a rear collecting basket, a rear thrombus cutter and a negative pressure suction pipe; an anterior thrombus resectoscope is arranged on a middle catheter at the rear part of the anterior collection basket; a rear thrombus cutter is arranged on the rear catheter at the front part of the rear collecting basket.

Description

Thrombus removal system

Technical Field

The utility model relates to a thrombus clearance system belongs to the medical instrument field, is applicable to and clears away foreign matter such as thrombus, thrombus fragment, blood clot, blood lipid plaque, atherosclerosis thing in the blood vessel, also is applicable to and clears away the blood vessel thrombus of placing the intravascular stent internal surface formation and arouse vascular endothelial hyperplasia.

Background

Thrombi are small patches of blood flow that form on the surface of a denuded or repaired site within a blood vessel of the cardiovascular system. In the variable fluid-dependent type, thrombus is composed of insoluble fibrin, deposited platelets, accumulated leukocytes and entrapped erythrocytes, and thrombus formation is a multifactorial process of change in which a set of genetic and environmental factors interact and interact. The clinical common thrombus patients are mainly characterized by familial inheritance, recurrent attacks, symptom severity, abnormality of thrombus formation parts and younger onset time, and doubts about arterial or venous thrombosis or thromboembolism need objective basis. Taking out thrombus generated in blood vessels to recanalize the occluded blood vessels is a key for recovering thrombus to block the blood vessels and is also a new field of international blood vessel research at present. However, the current thrombus removal devices have many disadvantages, for example, the existing thrombus removal devices can generate 30% -50% of residues when thrombus removal is carried out, and countless fragments of the existing devices can remain in blood vessels when a catheter enters blood clots, so that the blood flow speed is reduced, and tissue necrosis is caused.

At present, a receiving device of a basket structure is arranged at the far end of blood flow of a thrombus excision part, thrombus is wound and excised by utilizing an excision spring and finally recovered into the basket structure, blood flow in a blood vessel can be kept to flow continuously through the basket structure in the process, but when the thrombus is excised by the spring excision device, the phenomenon that some tiny thrombus fragments can not be generated and pass through the basket receiving device along with blood to enter the blood vessel is avoided, and more thrombus can be generated again through long-time accumulation, so that harm is caused to a human body is avoided.

The intravascular stent is a metallic stent placed in a blood vessel of a human body, has the functions of opening a narrow blood vessel and ensuring smooth local blood flow, and has been widely applied clinically in intravascular stent technology (such as coronary stents, carotid stents, iliac femoral stents, inferior vena cava stents, hepatic vein stents, iliac vein stents, and the like). Because the surface of the intravascular stent is not smooth, thrombus is easy to form and vascular endothelial hyperplasia is easy to cause restenosis. Usually, the treatment of restenosis of the intravascular stent is thrombolysis or treatment by balloon expansion, and the balloon expansion only can play a local role in squeezing and cannot remove thrombus and hyperplastic tissues, so the effect is not ideal and the removal is difficult.

Disclosure of Invention

The utility model aims at the above-mentioned weak point provide a thrombus clearance system, thoroughly clear away the thrombus foreign matter in the blood vessel through thrombus clearance system, resume the blood vessel unblocked. Thoroughly solves the complications caused by the thrombus.

The thrombus removal system is used for solving and removing foreign matters such as intravascular thrombus, thrombus fragments, blood clots, blood lipid plaques, atherosclerotic materials and the like in large and small blood vessels in clinic, and is also suitable for removing the vascular thrombus formed on the inner surface of a vascular stent placed in a blood vessel of a human body and causing vascular endothelial hyperplasia. The thrombus removing system removes foreign matters such as thrombus in blood vessels, saves the placement of stents, causes blood vessel burst when the stents are excessively placed, and does not need to take medicines for a long time.

The thrombus removal system is realized by adopting the following technical scheme:

the thrombus removal system includes a thrombus removal device and an operating handle portion.

The thrombus removing device is connected with the operating handle part through the rear catheter.

The thrombus removing device comprises a puncture head, a guide wire, a front guide pipe, a middle guide pipe, a front sleeve, a front balloon catheter, a front support sleeve, a front collecting basket, a front thrombus cutter, a front guide pipe and middle guide pipe telescopic connecting mechanism, a middle guide pipe and rear guide pipe telescopic connecting pipe, a rear guide pipe sleeve, a rear balloon catheter, a rear support sleeve, a rear collecting basket, a rear thrombus cutter and a negative pressure suction pipe.

The front sleeve is sleeved outside the front guide pipe and the middle guide pipe, an inner locking boss is arranged at the front end of the front guide pipe sleeve, and a front guide pipe outer locking boss is arranged at the rear end of the front guide pipe. The front sleeve is provided with a front balloon mounting groove, the front balloon is mounted in the front balloon mounting groove, the front balloon catheter is connected with the front balloon, the middle catheter is provided with a front collecting basket for collecting and removing thrombus fragments and foreign matters, and the middle catheter at the rear part of the front collecting basket is provided with a front thrombus resectoscope.

A front supporting sleeve is arranged in the front catheter and is used for supporting and positioning the front catheter, the front balloon and the front balloon catheter.

The back sleeve pipe suit is provided with back sacculus mounting groove outside the pipe of back on, back sacculus installation in back sacculus mounting groove, and back sacculus catheter links to each other with back sacculus, installs back collection basket on the pipe of back for collect the thrombus piece and the foreign matter of cleaing away, be provided with back thrombus excising device on the anterior back pipe of collection basket at back.

A rear support sleeve is arranged in the rear catheter and is used for supporting and positioning the rear catheter, the rear balloon and the rear balloon catheter. The rear catheter is internally provided with a rear supporting sleeve on which a negative pressure suction pipe is arranged and used for removing thrombus fragments and foreign matters by a negative pressure suction thrombus excider and discharging the removed thrombus fragments and foreign matters out of the body by negative pressure suction.

The front guide pipe and middle guide pipe telescopic connecting mechanism comprises a front guide pipe telescopic sleeve, a guide pipe telescopic connecting pipe and a middle guide pipe telescopic pipe, wherein the front end of the front guide pipe telescopic sleeve is provided with an external locking boss, and the rear end of the front guide pipe is provided with an internal locking boss; the front guide pipe telescopic sleeve is inserted at the rear part of the front guide pipe and slides along the inner wall of the front guide pipe in a telescopic mode and is locked through the locking boss. The middle guide pipe is sleeved and inserted in the front of the middle guide pipe in a telescopic way, the front end of the middle guide pipe is provided with an inward locking boss, and the inward locking boss is matched and locked with an outward locking boss at the rear end of the middle guide pipe telescopic pipe. The front end of the conduit telescopic connecting pipe is inserted into the front conduit telescopic sleeve, and the rear end of the conduit telescopic connecting pipe is inserted into the middle conduit telescopic conduit and locked by the locking boss.

The seal wire passes back pipe, back supporting sleeve, well pipe and back pipe telescopic connection pipe, well pipe telescopic tube, pipe telescopic connection pipe, preceding pipe telescopic tube, preceding pipe, preceding supporting sleeve in proper order, and the tip installation is fixed with the puncture head before the seal wire, the puncture head be conical puncture head, the front end has little fillet. The puncture head can be provided with an arc-shaped cutting edge, so that the puncture head can conveniently rotate to cut and penetrate through thrombus hard blocks without puncturing blood vessels.

The front thrombus cutter and the rear thrombus cutter are provided with branch-leaf-shaped cutting blades which are distributed on the outer circumferences of the front catheter and the rear catheter in a crossed manner. The shape of the cutting blade can be leaf shape, strip shape, triangle, square or ellipse. When the front catheter moves forwards, the front sleeve slides forwards for a certain distance, the front collecting basket and the front thrombus cutter cutting blade spring open to form a certain angle with the middle catheter, and the size of the angle is determined by the distance of the front catheter sliding forwards; the posterior catheter is moved along the middle sleeve, the middle catheter and the posterior catheter telescopic connecting pipe slide forwards for a certain distance, the posterior thrombus cutter, the posterior collecting basket and the posterior sacculus are separated from the posterior sleeve, the cutting blade of the posterior thrombus cutter is flicked to form a certain angle with the posterior catheter, and the angle is determined by the distance of the anterior catheter sliding forwards; the cutting blade is made of any material such as nickel-titanium alloy, nylon, PTFE (Teflon elastic plastic wire) and the like. When the cutting blade rotates along the axial direction of the guide wire catheter, the cutting blade cuts thrombus, plaque and atherosclerotic materials on the inner wall of the blood vessel.

The front collecting basket and the rear collecting basket are made of nickel-titanium alloy metal wire mesh-shaped braided fabrics.

The middle catheter and the rear catheter are connected through a middle and rear catheter telescopic connecting pipe, and outer locking bosses are arranged at two ends of the middle and rear catheters and are respectively matched, locked and positioned with an inner locking boss at the rear end of the middle catheter and an inner locking boss at the front end of the rear catheter.

The front end part of the guide wire is provided with a front positioning block, the front part of the guide wire is provided with a stop block, and the front end part of the front guide pipe is arranged to be conical and is provided with a guide wire through hole.

A check block with a hole is arranged in the guide pipe telescopic connecting pipe and used for installing a guide wire, a liquid guide pipe, a light guide fiber, a camera shooting signal transmission line and the like, and the check block on the guide wire is matched with a front guide pipe and a middle guide pipe connecting mechanism and used for pushing the front guide pipe to slide forwards so as to open a front collecting basket and a front thrombus cutter.

Front catheter front portion be provided with front catheter mobile location protruding, after clearance such as thrombus in the blood vessel is accomplished, will be preceding back sacculus pressure liquid get rid of, the shrink of front and back sacculus gets into the sacculus mounting groove in, the seal wire moves backward, through locating piece, preceding supporting sleeve, the protruding front catheter that drives of front catheter mobile location is removed the promotion front sleeve pipe backward and is collected basket, preceding cutting blade before with preceding, the front sleeve is intraductal, pipe, back catheter backward movement will be followed sacculus in the front sleeve simultaneously, back collection basket, back cutting blade are collected intraductal.

Front catheter front end both sides be provided with miniature camera head mounting hole respectively, miniature camera head, optical fiber are installed respectively to the optical fiber mounting hole, link to each other with optic fibre video connector through the signal line, optic fibre video connector links to each other with the video monitoring appearance, the video monitoring appearance is equipped with the optical fiber light source, provides the optical fiber light source for the optical fiber, can pass through video monitoring appearance video monitoring operation during the operation.

The operation handle part is provided with a handle, the front end of the handle is movably connected with a rear catheter, the rear part of the rear catheter can be provided with a miniature servo motor, the rear catheter is driven by the miniature servo motor, the rear catheter drives the middle catheter to rotate in a reciprocating and micro mode through the middle catheter and the rear catheter telescopic connecting pipe, blade cutting knives on the front thrombus cutter and the rear thrombus cutter are driven to cut off fragments formed by foreign matters such as thrombus in the blood vessel, the rear catheter and the middle catheter can also move back and forth, blade cutting knives on the front thrombus cutter on the middle catheter and the rear thrombus cutter on the rear catheter are driven to pull back and forth to cut off fragments formed by foreign matters such as thrombus in the blood vessel, the fragments can be sucked out of the body through a negative pressure suction pipe, and the fragments can be collected.

The handle is provided with a guide wire guide wheel, the guide wire is wound on the guide wire guide wheel through the guide wheel and is positioned through a guide wire positioner, and the guide wire moves back and forth and is operated by operating the push rod to shift positions.

The handle is provided with a power switch, a micro servo motor reversing switch, an optical fiber video connector, a front balloon liquid guide pipe connector, a rear balloon liquid guide pipe connector, a negative pressure liquid pumping connector and a power plug. The optical fiber video connector is connected with the monitoring video instrument. The front balloon catheter is connected with the front balloon catheter joint, and a front balloon catheter clamp is arranged on the front balloon catheter and used for controlling the opening and closing of the front balloon catheter. The rear balloon catheter is connected with the rear balloon catheter joint, and a rear balloon catheter clamp is arranged on the rear balloon catheter and used for controlling the opening and closing of the rear balloon catheter. The front balloon catheter joint and the rear balloon catheter joint are respectively connected with pressure physiological saline or anticoagulant pressure liquid. The negative pressure liquid pumping joint is connected with a negative pressure source. The power plug is connected with a 3.6V low-voltage power supply.

When the thrombus removing system is used, the actual condition of the thrombus in the blood vessel and the size, shape and position of the thrombus are observed by a medical angiography X-ray machine under X-ray fluoroscopy observation, and the thrombus removing device disclosed by the invention is put into the position of the blood vessel where thrombus tissues exist.

The working principle is as follows:

the thrombus clearing device and the catheter plug-in are firstly inserted into a blood vessel of a patient needing thrombus clearing through a minimally invasive surgery, the optical fiber and the optical fiber video switch are turned on by operating the handle power switch, the optical fiber video connector is ensured to be connected with the monitoring frequency instrument, the optical fiber video connector can move back and forth through the miniature camera and the optical fiber arranged at the front end of the front catheter, the actual condition of the thrombus in the blood vessel and the size, shape and position of the thrombus are observed through the optical fiber video, or the actual condition of the thrombus in the blood vessel and the size, shape and position of the thrombus are observed through a medical angiography X-ray machine under X-ray fluoroscopy, and the thrombus clearing device enters the position of thrombus tissues in the blood vessel under the X-ray fluoroscopy observation.

1. The operation push rod of the handle is used for pushing the operation push rod to drive the guide wire to move forwards, the guide wire is driven to the foremost puncture head of the guide wire opening, the puncture head penetrates through a thrombus formation area to be cleared, and the guide wire, the front guide tube, the middle guide tube, the front sleeve, the front balloon catheter, the front support sleeve, the front collecting basket, the front thrombus cutter, the telescopic connecting mechanism of the front guide tube and the middle guide tube, the rear sleeve tube, the rear balloon catheter, the rear support sleeve, the rear collecting basket and the rear thrombus cutter all move forwards.

2. The cutting device of the thrombus clearing system stops at the rear end of thrombus formation, the push rod is operated to move forwards through the operating handle, so that the rear catheter, the rear collecting basket and the rear thrombus cutting device are completely exposed out of the rear sleeve, the rear balloon is opened for positioning, and the rear balloon catheter clamp is opened, so that the rear balloon is filled with liquid and is positioned. The handle is pushed again to operate the push rod to enable the guide wire to move forwards continuously, the front positioning block of the guide wire drives the front guide pipe, the outer locking boss arranged at the rear end of the front guide pipe drives the front sleeve, the front sleeve drives the front guide pipe telescopic pipe after moving for a certain distance and drives the front sleeve to move forwards and slide away from the front thrombus resectoscope in sequence, the front collecting basket enables all thrombus forming parts to be behind the front blood vessel resectoscope, and the front balloon guide pipe clamp is opened to support the inner wall of the blood vessel 3 to be in a position suitable for size.

3. And opening the front liquid guide pipe clamp to fill liquid into the front balloon, moving the operation push rod to move the guide wire forwards after the front balloon reaches the proper size, and enabling the front collection basket and the front thrombus resectoscope to be opened sufficiently.

4. The positions of the front balloon and the rear balloon are determined as shown in the figure, the rear balloon catheter clamp is opened to fill liquid for the rear balloon, so that the rear collection basket and the rear thrombus cutter can be opened enough, and at the moment, the front cutter, the rear cutter and the front collection basket are simultaneously in an opened state.

5. The micro servo motor reversing switch on the operating handle is pushed, the micro servo motor starts to operate and drives the cutting blades of the rear catheter, the middle catheter and the front and rear thrombus resectoscope to slightly rotate back and forth in the clockwise and anticlockwise directions, and the front and rear thrombus resectoscope are enabled to move back and forth and reciprocate for several times through the operation push rod on the operating handle, so that foreign matters such as thrombus 4 on the inner wall of the blood vessel are thoroughly resected.

6. The negative pressure liquid suction connector and the negative pressure source liquid suction switch are started on the operating handle, thrombus fragments and foreign matters in the middle of the front balloon and the rear balloon are sucked through the negative pressure suction pipe, the thrombus fragments and the foreign matters in the blood vessel can be completely sucked through the negative pressure suction of the negative pressure suction pipe, the large foreign matters and the large thrombus are sucked into the collecting basket, the front catheter and the catheter cavity of the rear catheter, and the thrombus and the foreign matters in the blood vessel are completely removed.

7. After thrombus and foreign matters in blood vessels are cleared, the guide wire is recovered through an operation push rod on an operation handle, then the guide wire moves backwards, a puncture head at the front part of the guide wire drives a front guide pipe to move backwards, a front guide pipe external positioning boss pushes a front sleeve to move backwards, a front sleeve rear opening moves a front collection basket for applying pressure backwards, the front collection basket is received in the front sleeve, then a front cutter blade for applying pressure backwards moves, and a front thrombus cutter cutting blade is received in the front sleeve.

8. And continuously moving the guide wire and simultaneously recovering front and rear balloon liquids to restore the balloons to the original position, pushing the handle to enable the rear sleeve to move forwards to collect the rear balloons, the rear collecting basket and the cutting blade of the rear thrombus remover, enabling the front sleeve and the rear sleeve to be folded forwards and backwards, and then drawing out the thrombus remover device.

In the operation process, the thrombectomy effect can be checked through the video at the front end of the catheter, or the thrombectomy effect can be checked through a medical angiography X-ray machine under X-ray fluoroscopy observation.

Compared with the prior art, the thrombus removal system provided by the invention has the advantages of reasonable design, compact structure, convenience in use and the like:

1. the front balloon and the rear balloon which can be in a contraction or release state are arranged on the channel tube, so that the blood vessel can be blocked for a short time when the balloon is in the release state, and the blood is prevented from flowing downwards.

2. Because the front thrombus resectoscope and the rear thrombus resectoscope are arranged to be branch-leaf-shaped thrombus resectoscope, when the cutting blade axially rotates along the guide wire catheter, the cutting blade cuts thrombus, plaque and atherosclerotic material on the inner wall of the blood vessel.

3. The puncture head is fixed on the front end of the guide wire and is in a conical shape, the front end of the puncture head is provided with a small fillet, and the puncture head is provided with an arc-shaped cutting edge, so that rotary cutting can be conveniently carried out to penetrate through thrombus and prevent thrombus from puncturing blood vessels.

4. The middle catheter is provided with a front collecting basket, the rear catheter is provided with a front collecting basket for collecting the removed thrombus fragments and foreign matters, the front and rear collecting baskets capture and take out the thrombus, and the thrombus fragments generated in the thrombus taking-out process can be completely taken out.

5. The rear part of the rear catheter can be provided with a micro motor, the middle catheter and the rear catheter are driven to rotate by the micro motor, the blade cutting knife is driven to cut off fragments formed by thrombus and other foreign matters in the blood vessel, the fragments can be sucked out of the body through the negative pressure suction pipe, and the fragments can be collected by the front and rear collecting baskets and taken out of the body.

6. Front catheter front end both sides are provided with miniature camera mounting hole respectively, and miniature camera, optical fiber are installed respectively to the optical fiber mounting hole, link to each other with optic fibre video connector through the signal line, and the signal line links to each other with video monitoring appearance with optic fibre video connector, can pass through video monitoring appearance video monitoring operation during the operation.

7. The thrombus removal system has the characteristics of small wound, simple operation, quick response, accurate curative effect, safety and reliability.

8. The thrombus removal system can completely remove the blockage in the blood vessel.

9. The use of a thrombus removal system may eliminate the need for placement of a vascular stent (both non-degradable and degradable).

10. A set of thrombus removal system can remove foreign matters such as thrombus at different parts in a human body.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

figure 1 is a schematic view of a thrombus removal system.

FIG. 2 is a schematic view of the closed state of the thrombectomy device of the thrombectomy system 1.

FIG. 3 is a schematic view of the closed state of the thrombectomy device of the thrombectomy system shown in FIG. 2.

FIG. 4 is a schematic view of the thrombus removal device of the thrombus removal system in an open state.

Fig. 5 is a schematic diagram of a state of a thrombus in a blood vessel.

Figure 6 is a schematic diagram of a thrombus removal system prior to removal of a blood vessel thrombus.

Fig. 7 is a schematic diagram of a thrombus removal process of a thrombus removal system for removing thrombus from a blood vessel.

FIG. 8 is a schematic representation of a vessel after thrombus removal.

FIG. 9 is a schematic view of the operating handle portion of the thrombectomy system.

In the figure: 1. A thrombus removal device 2, an operation handle part 3, a blood vessel 4 and thrombus;

1-1 parts of puncture head, 1-2 parts of guide wire, 1-3 parts of front catheter, 1-4 parts of middle catheter, 1-5 parts of front sleeve, 1-6 parts of front balloon, 1-7 parts of front balloon catheter, 1-8 parts of front support sleeve, 1-9 parts of front collection basket, 1-10 parts of front thrombus cutter, 1-11 parts of front catheter and middle catheter telescopic connecting mechanism, 1-12 parts of rear catheter, 1-13 parts of rear sleeve, 1-14 parts of rear balloon, 1-15 parts of rear balloon catheter, 1-16 parts of rear support sleeve, 1-17 parts of rear collection basket, 1-18 parts of rear thrombus cutter, 1-19 parts of middle catheter and rear catheter telescopic connecting pipe, 1-20 parts of negative pressure suction tube;

1-2-1 parts of front positioning blocks, 1-2-2 parts of stop blocks;

1-3-1, 1-3-2 parts of a front guide pipe outer locking boss, 1-3-2 parts of a front balloon installation groove, 1-3-3 parts of a signal line, 1-3-4 parts of a front guide pipe moving positioning boss, 1-3-5 parts of a micro camera, 1-3-6 parts of an optical fiber;

1-11-1 parts of front guide pipe telescopic sleeve, 1-11-2 parts of guide pipe telescopic connecting pipe, 1-11-3 parts of middle guide pipe telescopic pipe, 1-11-4 parts of block with hole; 1-12-1, inner locking boss; 1-12-2, a rear balloon mounting groove;

1-19-1 and an external locking boss.

Detailed Description

Referring to fig. 1-9, the thrombectomy system includes a thrombectomy device 1 and an operating handle portion 2.

The thrombus clearing device 1 is connected with the operating handle part 2 through a rear catheter.

The thrombus removal device 1 comprises a puncture head 1-1, a guide wire 1-2, a front guide tube 1-3, a middle guide tube 1-4, a front sleeve tube 1-5, a front balloon 1-6, a front balloon catheter 1-7, a front support sleeve 1-8, a front collection basket 1-9, a front thrombus cutter 1-10, a front and middle guide tube telescopic connecting mechanism 1-11, a rear guide tube 1-12, a rear sleeve tube 1-13, a rear balloon 1-14, a rear balloon catheter 1-15, a rear support sleeve 1-16, a rear collection basket 1-17, a rear thrombus cutter 1-18, a middle and rear guide tube telescopic connecting tube 1-19 and a negative pressure suction tube 1-20.

The front sleeve 1-5 is sleeved outside the front guide pipe 1-3 and the middle guide pipe 1-4, the front end part of the front sleeve 1-5 is provided with an inner locking boss 1-5-1, and the rear end of the front guide pipe is provided with a front guide pipe outer locking boss 1-3-1. The front catheter 1-3 is provided with a front balloon mounting groove 1-3-2, the front balloon 1-6 is mounted in the front balloon mounting groove 1-3-2, a front balloon catheter 1-7 is connected with the front balloon 1-6, the middle catheter 1-4 is provided with a front collecting basket 1-9 for collecting removed thrombus fragments and foreign bodies, and the middle catheter 1-4 at the rear part of the front collecting basket 1-9 is provided with a front thrombus resectoscope 1-10.

A front support sleeve 1-8 is arranged in the front catheter 1-3 and is used for supporting and positioning the front catheter, the front balloon and the front balloon catheter.

The rear sleeve 1-13 is sleeved outside the rear catheter 1-12, a rear balloon installing groove 1-12-2 is arranged on the rear catheter 1-12, a rear balloon 1-14 is arranged in the rear balloon installing groove 1-12-2, a rear balloon catheter 1-15 is connected with the rear balloon 1-14, a rear collecting basket 1-17 is arranged on the rear catheter 1-13 and used for collecting the removed thrombus fragments and foreign bodies, and a rear thrombus cutter 1-18 is arranged on the rear catheter 1-12 at the front part of the rear collecting basket.

A rear support sleeve 1-16 is arranged in the rear catheter 1-12 and used for supporting and positioning the rear catheter, the rear balloon and the rear balloon catheter. A back supporting sleeve 1-16 arranged in the back catheter 1-12 is provided with a negative pressure suction pipe 1-20 which is used for removing thrombus fragments and foreign matters by a negative pressure suction thrombus excider and discharging the removed thrombus fragments and foreign matters out of the body by negative pressure suction.

The front guide pipe and middle guide pipe telescopic connecting mechanism 1-11 comprises a front guide pipe telescopic sleeve 1-11-1, a guide pipe telescopic connecting pipe 1-11-2 and a middle guide pipe telescopic pipe 1-11-3, wherein the front end of the front guide pipe telescopic sleeve 1-11-1 is provided with an outer locking boss 1-3, and the rear end of the front guide pipe 1-3 is provided with an inner locking boss; the front guide pipe telescopic sleeve 1-11-1 is inserted into the rear part of the front guide pipe 1-3 and slides along the inner wall of the front guide pipe in a telescopic way and is locked by a locking boss. The middle guide tube telescopic tube 1-11-3 is inserted in the front of the middle guide tube 1-4, the front end of the middle guide tube 1-4 is provided with an inward locking boss which is matched and locked with the outward locking boss at the rear end of the middle guide tube telescopic tube 1-11-3. The front end of the conduit telescopic connecting pipe 1-11-2 is inserted into the front end pipe telescopic sleeve 1-11-1, and the rear end of the conduit telescopic connecting pipe 1-11-2 is inserted into the middle conduit telescopic conduit 1-11-3 and locked by the locking boss.

The guide wire 1-2 sequentially penetrates through a rear catheter 1-12, a rear supporting sleeve 1-16, a middle catheter and rear catheter telescopic connecting pipe 1-19, a middle catheter 1-4, a middle catheter telescopic sleeve 1-11-3, a catheter telescopic connecting pipe 1-11-2, a front catheter telescopic sleeve 1-11-1, a front catheter 1-3 and a front supporting sleeve 1-8, a puncture head 1-1 is fixedly installed at the front end of the guide wire 1-2, the puncture head 1-1 is a conical puncture head, and a small fillet is arranged at the front end of the puncture head. The puncture head 1-1 can be provided with an arc-shaped cutting edge, so that the hard thrombus 4 can be conveniently and rotatably cut to pass through, and the blood vessel 3 can not be punctured.

The front thrombus resectoscope 1-10 and the rear thrombus resectoscope 1-18 are provided with branch-leaf-shaped cutting blades which are distributed on the outer circumferences of the middle catheter and the rear catheter in a crossed manner, and the cutting blades can be in a tree-leaf shape, a long strip shape, a triangular shape, a square shape or an oval shape. When the front catheter 1-3 moves forwards, the front sleeve 1-5 slides forwards for a certain distance, the rear front collection basket 1-9 and the front thrombus cutter 1-10 are flicked to form a certain angle with the middle catheter 1-4, and the size of the angle is determined by the distance of the front catheter 1-3 sliding forwards; the posterior catheter 1-12 is moved along the middle catheter 1-4, the middle catheter and the posterior catheter telescopic connecting pipe 1-19 slide forward for a certain distance, the posterior thrombus resectoscope 1-18, the posterior collection basket 1-17 and the posterior saccule 1-14 are separated from the posterior cannula 1-13, the cutting blade of the posterior thrombus resectoscope 1-18 is flicked to form a certain angle with the posterior catheter 1-12, and the size of the angle is determined by the forward sliding distance of the posterior catheter 1-12. The cutting blade is made of nickel-titanium alloy, nylon, PTFE (Teflon elastic plastic wire) and other materials. When the cutting blade rotates along the axial direction of the guide wire and the catheter, the cutting blade cuts thrombus 4, plaque and atherosclerosis on the inner wall of the blood vessel 3.

The front collecting basket 1-9 and the rear collecting basket 1-17 are made of nickel-titanium alloy metal wire mesh-shaped braided fabric.

The middle guide pipe 1-4 is connected with the rear guide pipe 1-12 through a middle rear guide pipe telescopic connecting pipe 1-19, and two ends of the middle rear guide pipe telescopic connecting pipe 1-19 are respectively provided with an outer locking boss 1-19-1 which is respectively matched, locked and positioned with an inner locking boss 1-4-1 at the rear end of the middle guide pipe 1-4 and an inner locking boss 1-12-1 at the front end of the rear guide pipe 1-12.

The front end part of the guide wire 1-2 is provided with a front positioning block 1-2-1, and the front part of the guide wire 1-2 is provided with a stop block 1-2-2. The front end part of the front guide pipe 1-3 is conical and is provided with a guide wire through hole.

A baffle 1-11-4 with a hole is arranged in the conduit telescopic connecting pipe 1-11-2 and used for installing a guide wire, a liquid guide pipe, a light guide fiber, a camera signal transmission line and the like, and the baffle is matched with the baffle on the guide wire, and is used for pushing the front conduit to slide forwards through a front conduit and middle conduit connecting mechanism so as to open the front collecting basket and the front thrombus cutter.

The front part of the front guide pipe 1-3 is provided with a front guide pipe moving and positioning bulge 1-3-4, after cleaning thrombus 4 and the like in the blood vessel 3, pressure liquid in the front and rear saccules is removed, the front and rear saccules are contracted to enter the saccule mounting groove, the guide wire 1-2 moves backwards, the front guide pipe 1-3 is driven by the positioning block 1-2-1, the front support sleeve 1-8 and the front guide pipe moving positioning bulge 1-3-4 to move backwards to push the front sleeve 1-5 to collect the front collection basket 1-9 and the front cutting blade 1-10 in the front sleeve 1-5, meanwhile, the front catheter 1-3 pushes the middle catheter 1-4 and the rear catheter 1-12 to move backwards, and the rear balloon 1-14, the rear collecting basket 1-17 and the rear cutting blade 1-18 are collected in the rear sleeve 1-13.

The two sides of the front end of the front guide pipe 1-3 are respectively provided with a micro camera mounting hole, the two sides of the front end of the front guide pipe 1-3 are respectively provided with a micro camera 1-3-5 and an optical fiber 1-3-6, the micro camera and the optical fiber are respectively connected with an optical fiber video connector 2-6 through a signal line 1-3-3 and the optical fiber 1-3-6, the optical fiber video connector is connected with a video monitor, the video monitor is provided with an optical fiber light source for providing the optical fiber 1-3-6 with the optical light source, and the operation can be monitored through the video monitor during the operation. The video monitoring instrument adopts a commercially available video monitoring instrument.

The operating handle part 2 is provided with a handle 2-1, the front end of the handle 2-1 is movably connected with a rear guide pipe 1-12, the rear part of the rear guide pipe 1-12 is provided with a micro servo motor 2-2, the rear guide pipe 1-12 is driven by the micro servo motor 2-2, the rear guide pipe 1-12 is driven by a middle guide pipe and a rear guide pipe telescopic connecting pipe 1-19 to slightly rotate back and forth, a blade cutting knife on a front thrombus excider 1-10 and a rear thrombus excider 1-18 is driven to excise fragments formed by thrombus 4 in a blood vessel 3, the rear guide pipe and the middle guide pipe can also move back and forth, and the blade cutting knife on the front thrombus excider 1-10 on the middle guide pipe and the rear thrombus excider 1-18 on the rear guide pipe are driven to pull back and forth to excise the fragments formed by thrombus, can be sucked out of the body through the negative pressure suction pipes 1 to 20, and the crushed slag can be collected and taken out of the body through the front and rear collecting baskets.

The handle 2-1 is provided with a guide wire guide wheel 2-4, an operation push rod 2-5, a guide wire 1-2 is wound on the guide wire guide wheel 2-4 through the guide wheel 2-12 and is positioned through a guide wire positioner 2-11, and the guide wire moves back and forth and is operated by the operation push rod in a stepping mode.

The handle 2-1 is provided with a power switch 2-3, a micro servo motor reversing switch 2-13, an optical fiber video connector 2-6, a front balloon liquid guide pipe connector 2-7, a rear balloon liquid guide pipe connector 2-9, a negative pressure liquid suction connector 2-8 and a power plug 2-10. The optical fiber video connectors 2-6 are connected with a monitoring video instrument. The front balloon catheter 1-7 is connected with the front balloon catheter joint 2-7, and the front balloon catheter is provided with a front balloon catheter clamp 2-14 for controlling the opening and closing of the front balloon catheter. The rear sacculus liquid guide pipe 1-15 is connected with the rear sacculus liquid guide pipe joint 2-9, and the rear sacculus liquid guide pipe 1-15 is provided with the rear sacculus liquid guide pipe clamp 2-15 which is used for controlling the opening and closing of the rear sacculus liquid guide pipe. The front balloon catheter joint 2-7 and the rear balloon catheter joint 2-9 are respectively connected with pressure physiological saline or anticoagulant pressure liquid. The negative pressure liquid extraction joints 2-8 are connected with a negative pressure source. The power plug 2-10 is connected with a 3.6V low-voltage power supply.

Thrombus removal system use:

the thrombus clearing device and the catheter plug-in are firstly inserted into a blood vessel of a patient needing thrombus clearing through a minimally invasive surgery, the optical fiber and the optical fiber video switch are turned on by operating the handle power switch 2-3, the optical fiber video connector is ensured to be connected with the monitoring frequency instrument, the optical fiber video connector can move back and forth through the micro camera 1-3-5 and the optical fiber 1-3-6 arranged at the front end of the front catheter 1-3, the actual condition of the thrombus in the blood vessel and the size, the shape and the position of the thrombus are observed through the optical fiber video, or the actual condition of the thrombus in the blood vessel and the size, the shape and the position of the thrombus are observed through a medical angiographic X-ray machine under X-ray perspective observation, and the thrombus clearing device disclosed by the invention is put into the position of thrombus tissue in the blood vessel under.

1. An operation push rod of a handle is used for pushing an operation push rod 2-5 to drive a guide wire 1-2 to move forwards, a guide wire 1-2 is driven to a puncture head 1-1 at the forefront end of a guide wire opening, the puncture head 1-1 penetrates through a thrombus 4 formation area needing to be cleared, the guide wire 1-2, a front guide pipe 1-3, a middle guide pipe 1-4, a front sleeve pipe 1-5, a front balloon 1-6, a front balloon catheter 1-7, a front support sleeve 1-8, a front collection basket 1-9, a front thrombus cutter 1-10, a front guide pipe and middle guide pipe telescopic connecting mechanism 1-11, a rear guide pipe 1-12, a rear sleeve pipe 1-13, a rear balloon 1-14, a rear balloon catheter 1-15, a rear support sleeve 1-16, The posterior collection basket 1-17 and the posterior thrombectomy device 1-18 all move forward.

2. The cutter of the thrombus clearing system is parked at the rear end of thrombus formation, the push rod 2-5 is operated to move forwards by operating the handle, so that the rear catheter 1-12, the rear collecting basket 1-9 and the rear thrombus cutter 1-18 are completely exposed out of the rear sleeve 1-13, the rear balloon 1-14 is opened for positioning, the rear balloon catheter clamp 2-15 is opened, the rear balloon 1-14 is filled with liquid, and the rear balloon 1-14 is positioned. The handle is pushed again to operate the push rod 2-5 to enable the guide wire 1-2 to move forwards continuously, the front positioning block 1-2-1 of the guide wire drives the front guide pipe 1-3, the front guide pipe outer locking boss 1-3-1 arranged at the rear end of the front guide pipe 1-3 drives the front sleeve 1-5, the front sleeve 1-5 drives the front guide pipe extension pipe 1-11-1 after moving for a certain distance and drives the front sleeve 1-5 to move forwards, the front sleeve slides away from the front thrombectomy device 1-10 in sequence, the front collection basket 1-9 enables the thrombogenic part to be behind the front blood vessel resection device 1-10 completely, and the front saccule liquid guide pipe clamp 2-14 is opened to support the inner wall of the blood vessel 3 to a position with a proper size.

3. And (3) starting the front catheter clamp 2-14 to fill the front balloon 1-6 with liquid, moving the operation push rod 2-5 to move the guide wire forwards through the operation handle again when the front balloon 1-6 is filled with liquid to reach a proper size, so that the front collection basket 1-9 and the front thrombectomy device 1-10 can be opened sufficiently.

4. The positions of the front balloon and the rear balloon are determined as shown in the figure, the rear balloon catheter clamp 2-15 is opened to fill liquid for the rear balloon, so that the rear collection basket and the rear thrombus cutter can be opened enough, and at the moment, the front cutter, the rear cutter, the front collection basket and the rear collection basket are in an opened state at the same time.

5. The micro servo motor reversing switch 2-13 on the operating handle is pushed, the micro servo motor starts to operate and drives the rear catheter 1-12, the middle catheter 1-4 and the cutting blade of the front and rear thrombus resectoscope to slightly rotate back and forth in the clockwise and anticlockwise directions, and the front and rear thrombus resectoscope moves back and forth and returns back and forth for a plurality of times through the operation push rod 2-5 on the operating handle, so that foreign matters such as thrombus 4 on the inner wall of the blood vessel 3 are completely resected.

6. The negative pressure liquid suction connector 2-8 and the negative pressure source liquid suction switch are started on the operating handle, thrombus fragments and foreign matters in the middle of the front balloon and the rear balloon are sucked through the negative pressure suction pipes 1-20, the thrombus fragments and the foreign matters in the blood vessel can be sucked completely through the negative pressure suction pipes 1-20, and large foreign matters and thrombus are sucked into the lumens of the collecting basket, the front catheter and the rear catheter to clean the thrombus and the foreign matters in the blood vessel.

7. After the thrombus and foreign matters in the blood vessel are cleared, the guide wire is recovered through an operation push rod 2-5 on an operation handle, the guide wire 1-2 moves backwards, a puncture head 1-1 at the front part of the guide wire drives a front guide pipe 1-3 to move backwards, a positioning boss 1-3-4 outside the front guide pipe pushes a front sleeve 1-5 to move backwards, a rear opening of the front sleeve 1-5 moves backwards to press a front collecting basket 1-9, the front collecting basket 1-9 is collected into the front sleeve 1-5, a blade of a front pressure-applying exciser is moved backwards, and a cutting blade of the front thrombus exciser 1-10 is collected into the front sleeve 1-5.

8. Continuously moving the guide wire 1-2 and simultaneously recovering front and rear sacculus liquid to restore the sacculus to the original position, pushing the handle to enable the rear sleeve 1-13 to move forwards to collect the rear sacculus 1-14, the rear collecting basket 1-17 and the rear thrombus cutter 1-18 to cut the blades, enabling the front sleeve and the rear sleeve to be folded forwards and backwards, and then drawing out the thrombus remover device. The thrombectomy effect can be checked by video at the front end of the catheter or by a medical angiography X-ray machine under X-ray fluoroscopy.

Claims

1. A thrombus removal system comprising a thrombus removal device and an operating handle portion;

the thrombus removing device is connected with the operating handle part through a rear catheter;

the thrombus removing device comprises a puncture head, a guide wire, a front guide pipe, a middle guide pipe, a front sleeve, a front balloon catheter, a front support sleeve, a front collecting basket, a front thrombus cutter, a front guide pipe and middle guide pipe telescopic connecting mechanism, a middle guide pipe and rear guide pipe telescopic connecting pipe, a rear guide pipe sleeve, a rear balloon catheter, a rear support sleeve, a rear collecting basket, a rear thrombus cutter and a negative pressure suction pipe;

the front sleeve is sleeved outside the front guide pipe and the middle guide pipe, the front end part of the front guide pipe sleeve is provided with an internal locking boss, the rear end of the front guide pipe is provided with a front balloon mounting groove, the front balloon is mounted in the front balloon mounting groove, the front balloon catheter is connected with the front balloon, the middle guide pipe is provided with a front collecting basket for collecting removed thrombus fragments and foreign matters, and the middle guide pipe at the rear part of the front collecting basket is provided with a front thrombus resectoscope;

a front support sleeve is arranged in the front catheter and is used for supporting and positioning the front catheter, the front balloon and the front balloon catheter;

the rear sleeve is sleeved outside the rear catheter, a rear balloon installation groove is formed in the rear catheter, the rear balloon is installed in the rear balloon installation groove, the rear balloon catheter is connected with the rear balloon, a rear collection basket is installed on the rear catheter and used for collecting the removed thrombus fragments and foreign matters, and a rear thrombus resectoscope is arranged on the rear catheter in front of the rear collection basket;

the rear catheter is internally provided with a rear supporting sleeve for supporting and positioning the rear catheter, a rear balloon and a rear balloon catheter, and the rear catheter is internally provided with a rear supporting sleeve on which a negative pressure suction pipe is arranged for sucking the thrombus resectoscope under negative pressure to remove thrombus fragments and foreign matters.

2. The thrombus removal system according to claim 1, wherein the front catheter and middle catheter telescopic connecting mechanism comprises a front catheter telescopic sleeve, a catheter telescopic connecting pipe and a middle catheter telescopic pipe, wherein an external locking boss is arranged at the front end of the front catheter telescopic sleeve, and an internal locking boss is arranged at the rear end of the front catheter telescopic sleeve; the front guide pipe telescopic sleeve is inserted at the rear part of the front guide pipe and slides along the inner wall of the front guide pipe in a telescopic way and is locked by a locking boss, the middle guide pipe telescopic sleeve is inserted at the front part of the middle guide pipe in a telescopic way, and the front end of the middle guide pipe is provided with an inward locking boss which is matched with an outward locking boss at the rear end of the middle guide pipe telescopic pipe to be locked; the front end of the conduit telescopic connecting pipe is inserted into the front conduit telescopic sleeve, and the rear end of the conduit telescopic connecting pipe is inserted into the middle conduit telescopic conduit and locked by the locking boss.

3. The thrombus removal system according to claim 1, wherein the guide wire passes through a rear catheter, a rear support sleeve, a middle catheter and rear catheter telescopic connecting pipe, a middle catheter telescopic sleeve, a catheter telescopic connecting pipe, a front catheter telescopic sleeve, a front catheter and a front support sleeve in sequence, a puncture head is fixedly mounted at the front end part of the guide wire, the puncture head is a conical puncture head, and the front end of the puncture head is provided with a small fillet; the puncture head is provided with an arc-shaped cutting edge, so that the puncture head can conveniently rotate to cut and penetrate thrombus hard blocks and cannot puncture blood vessels.

4. The thrombus removal system according to claim 1, wherein the anterior thrombus cutter and the posterior thrombus cutter are provided with branch-and-leaf shaped cutting blades which are distributed on the outer circumferences of the anterior and posterior catheters in a crossing manner; the shape of the cutting blade is leaf shape, strip shape, triangle, square or ellipse; when the front catheter moves forwards, the front sleeve slides forwards for a certain distance, and then the front collecting basket and the cutting blade of the front thrombectomy device spring open to form a certain angle with the middle catheter; the posterior catheter is moved along the middle sleeve, the middle catheter and the posterior catheter telescopic connecting pipe slide forwards for a certain distance, the posterior thrombus cutter, the posterior collection basket and the posterior sacculus are separated from the posterior sleeve, and the cutting blade of the posterior thrombus cutter is flicked to form a certain angle with the posterior catheter; the cutting blade is made of nickel-titanium alloy, nylon and PTFE Teflon elastic plastic wire materials.

5. The thrombectomy system of claim 1, wherein the anterior and posterior collection baskets are formed of nitinol wire mesh.

6. The thrombus removal system according to claim 1, wherein the middle catheter and the rear catheter are connected by a middle and rear catheter telescopic connecting tube, and both ends of the middle and rear catheter are provided with external locking bosses which are respectively matched, locked and positioned with the internal locking boss at the rear end of the middle catheter and the internal locking boss at the front end of the rear catheter.

7. The thrombus removal system according to claim 1, wherein a front positioning block is provided at a front end of the guide wire, a stopper is provided at a front end of the guide wire, and a guide wire through hole is provided at a front end of the front catheter;

a baffle with a hole is arranged in the guide tube telescopic connecting tube and used for installing a guide wire, a liquid guide tube, a light guide fiber and a camera shooting signal transmission line, and the baffle is matched with the baffle on the guide wire and used for pushing the front guide tube to slide forwards through the front guide tube and the middle guide tube connecting mechanism so as to open the front collecting basket and the front thrombus cutter.

8. The thrombus removal system according to claim 1, wherein a front catheter moving and positioning projection is provided at the front part of the front catheter, after thrombus in a blood vessel and the like are cleaned, pressure liquid in the front balloon and the rear balloon is removed, the front balloon and the rear balloon are contracted into the balloon installation groove, the guide wire moves backwards, the positioning block, the front support sleeve and the front catheter moving and positioning projection drive the front catheter to move backwards to push the front cannula to collect the front collection basket and the front cutting blade in the front cannula, and simultaneously the front catheter pushes the middle catheter and the rear catheter to move backwards to collect the rear balloon, the rear collection basket and the rear cutting blade in the rear cannula;

the front catheter front end both sides be provided with miniature camera head mounting hole respectively, miniature camera head, optical fiber are installed respectively to the optical fiber mounting hole, link to each other with optic fibre video connector through the signal line, optic fibre video connector links to each other with the video monitoring appearance, the video monitoring appearance is equipped with the optical fiber light source, provides the optical fiber light source for the optical fiber, passes through the video monitoring appearance video monitoring operation during the operation.

9. The thrombus removal system according to claim 1, wherein the operation handle part has a handle, the front end of the handle is movably connected with the rear catheter, the rear part of the rear catheter can be provided with a micro servo motor, the rear catheter is driven by the micro servo motor, the rear catheter drives the middle catheter to reciprocate and slightly rotate through the middle catheter and the rear catheter telescopic connecting tube, blade cutters on the front thrombus cutter and the rear thrombus cutter are driven to cut off fragments formed by foreign matters such as thrombus in the blood vessel, the rear catheter and the middle catheter can also move back and forth, the blade cutters on the front thrombus cutter on the middle catheter and the rear thrombus cutter on the rear catheter are driven to pull back and forth to cut off fragments formed by foreign matters such as thrombus in the blood vessel, the fragments are sucked out of the body through the negative pressure suction tube, and the fragments are collected and taken out of the body through the front and rear collection.

10. The thrombus removal system according to claim 1, wherein the handle is provided with a guide wire guide wheel, the operation push rod is operated, the guide wire is wound on the guide wire guide wheel through the guide wheel and is positioned through the guide wire positioner, and the guide wire is moved back and forth through the stepping operation of the operation push rod;

the handle is provided with a power switch, a micro servo motor reversing switch, an optical fiber video connector, a front balloon liquid guide pipe connector, a rear balloon liquid guide pipe connector, a negative pressure liquid pumping connector and a power plug;

the optical fiber video connector is connected with the monitoring video instrument; the front balloon catheter is connected with a front balloon catheter joint, and a front balloon catheter clamp is arranged on the front balloon catheter and used for controlling the opening and closing of the front balloon catheter; the rear balloon catheter is connected with a rear balloon catheter joint, and a rear balloon catheter clamp is arranged on the rear balloon catheter and used for controlling the opening and closing of the rear balloon catheter; the front balloon catheter joint and the rear balloon catheter joint are respectively connected with pressure physiological saline or anticoagulant pressure liquid;

the negative pressure liquid pumping joint is connected with a negative pressure source; the power plug is connected with a low-voltage power supply.