Thrombus removing device

Abstract

The thrombus removing device comprises a guide wire and a catheter movably arranged on the outer side of the guide wire in a sleeving mode, a thrombus decomposition mechanism is arranged at the front end of the catheter, and the thrombus decomposition mechanism comprises an inner sleeve, an outer sleeve, a suction hole, a decomposition assembly, a driving assembly and a negative pressure assembly; the inner sleeve coaxially and movably sleeves the outer side of the guide wire; the outer sleeve is coaxially and movably sleeved on the outer side of the inner sleeve at an interval; the front end of the outer sleeve and the front end of the inner sleeve are integrally and hermetically connected through an annular plate; a plurality of suction holes are uniformly formed in the surface of the outer sleeve and the surface of the annular plate respectively; the decomposition assembly comprises a bearing coaxially and fixedly arranged on the side face of the inner sleeve in a sleeving mode and a plurality of blades circumferentially arranged on the side face of the bearing and is used for cutting and decomposing the thrombus tissue sucked through the suction hole; the driving assembly is arranged at the tail end of the guide pipe and connected with the bearing. The negative pressure assembly is arranged at the tail end of the catheter and communicated with the interior of the catheter. In short, the device has the advantages of novel structure, convenience in use, safety, stability and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to a thrombus removal device. Background Art

[0002] In today's medical field, cardiovascular disease has become a major "killer" threatening human health, among which various diseases caused by blood clots are common. With the aging of the population and the change of people's lifestyle, the incidence of thrombosis has shown an increasing trend year by year.

[0003] Traditional methods of treating thrombosis have many limitations. Drug thrombolysis is one of the more commonly used methods, which involves injecting thrombolytic drugs into the body in the hope of dissolving the thrombus. However, this method not only has a long treatment cycle, but the drugs may also cause systemic adverse reactions, such as an increased risk of bleeding. For some patients who already have coagulation disorders or are taking other anticoagulant drugs, the risk is doubled. Moreover, drug thrombolysis is often difficult to accurately act on the site of the thrombus, resulting in unsatisfactory thrombolysis effects, and residual thrombi may still cause subsequent vascular blockage problems.

[0004] At present, the thrombus removal surgery in the prior art is to remove the thrombus by mechanical means, specifically, inserting a guide wire into the blood vessel, inserting an expandable guide structure along the guide wire to the thrombus, allowing the guide structure to expand after passing through the thrombus, and then pulling back the guide structure to take the thrombus out. However, since the thrombus is adhered to the inner wall of the blood vessel, direct pulling may cause the blood vessel to rupture, causing great danger, and the guide structure may also burst the blood vessel when it expands, which is very dangerous. Although there is still a method of cutting and removing the thrombus using a rotating blade in the prior art, if the operation is improper, the blade also has the risk of cutting the blood vessel. Summary of the invention

[0005] In view of the above-mentioned problems, the purpose of the present invention is to provide a thrombus removal device with a built-in blade, which does not directly contact the inner wall of the blood vessel and does not need to drag the thrombus tissue, thereby improving safety.

[0006] The technical solution of the present invention is: a thrombus removal device, comprising a guide wire and a catheter movably sleeved outside the guide wire, a thrombus decomposition mechanism is provided at the front end of the catheter, and the thrombus decomposition mechanism comprises:

[0007] An inner sleeve, coaxially and movably sleeved outside the guide wire;

[0008] An outer sleeve, a spaced coaxial movable sleeve is arranged outside the inner sleeve, and the front end of the outer sleeve is integrally sealed and connected with the front end of the inner sleeve via a ring plate;

[0009] Suction holes, a plurality of suction holes are evenly arranged on the surface of the outer sleeve and the surface of the ring plate;

[0010] The decomposition component includes a bearing coaxially and fixedly sleeved on the side of the inner sleeve and a plurality of blades circumferentially arranged on the side of the bearing. The sides of the plurality of blades are all in movable contact with the inner side of the outer sleeve, and the front ends of the plurality of blades are all in movable contact with the inner side of the ring plate, and are used for cutting and decomposing the thrombus tissue sucked through the suction holes;

[0011] The driving component is arranged at the tail end of the catheter, and the driving component is connected to the bearing and is used for driving the bearing to rotate;

[0012] The negative pressure component is arranged at the tail end of the catheter, and the negative pressure component is communicated with the inside of the catheter and is used for providing negative pressure suction to the suction holes through the catheter.

[0013] Further, the catheter includes:

[0014] The inner catheter is movably sleeved outside the guide wire, and the front end of the inner catheter is fixedly connected to the inner sleeve;

[0015] The outer catheter is sleeved outside the inner catheter, the front end of the outer catheter is fixedly connected to the outer sleeve, and the negative pressure component is connected to the outer catheter.

[0016] Further, a plurality of continuous groove tracks are provided on the outer surfaces of the outer sleeve and the outer catheter, and an insertion tube is movably embedded in each groove track. Arc-shaped baffles are respectively arranged on both sides of the insertion tube, and the arc-shaped baffles are used for blocking the suction holes on both sides of the groove track.

[0017] Further, developing positioning strips are provided at the front ends of the arc-shaped baffles, and the plurality of developing positioning strips adopt different light and dark colors.

[0018] Further, a plurality of medicine application holes are uniformly provided on the front end surface of the insertion tube, the medicine application holes are communicated with the inside of the insertion tube, and a medicine application pump is connected to the tail end of the insertion tube and is used for transmitting the liquid medicine to the medicine application holes through the inside of the insertion tube and spraying the liquid medicine to the inner wall of the blood vessel through the medicine application holes.

[0019] Further, the driving component includes:

[0020] The flexible shaft is movably sleeved outside the inner catheter, and one end of the flexible shaft is coaxially and fixedly connected to the side of the bearing;

[0021] The driving motor is hermetically connected and arranged at the tail ends of the inner catheter and the outer catheter, and the output shaft of the driving motor is coaxially and fixedly connected to the other end of the flexible shaft.

[0022] Further, the negative pressure component includes:

[0023] The collection bottle is connected to the lower side of the tail end of the outer catheter;

[0024] A negative pressure generator is provided on the side of the collection bottle, and the negative pressure generator is communicated with the upper part inside the collection bottle through a connecting pipe.

[0025] Furthermore, the connection between the ring plate and the front end of the outer sleeve pipe is a transitional arc chamfer.

[0026] The working method of the present invention: Under the guidance of imaging, a guide wire is sent through the blood vessel to the thrombus, and then a catheter is movably sleeved outside the guide wire. The catheter is sent to the thrombus, and the position of the thrombus decomposition mechanism is judged according to the imaging positioning strip. The inlay tube is pulled to move the arc-shaped baffle, exposing the suction hole. The negative pressure generator is started, and the thrombus tissue is sucked into the suction hole under the action of negative pressure suction. Then the driving motor is started to drive the blade to rotate, and the thrombus tissue sucked into the inner side of the suction hole is cut and decomposed. The catheter is slowly advanced to make the thrombus decomposition mechanism slowly pass through the thrombus, sucking and decomposing the thrombus. And under the guidance of imaging, the positions of different inlay tubes can be adjusted separately to block the suction hole on one side alone, avoiding the suction of the blood vessel inner wall tissue by the suction hole. During the process of sucking and decomposing the thrombus, a medicine feeding pump is used to supply medicine to the medicine feeding hole, so that the medicine acts on the blood vessel inner wall to dissolve the residual thrombus tissue on the blood vessel inner wall.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: A thrombus removal device provided by the present invention sets a thrombus decomposition mechanism at the front end of the catheter, sucks the thrombus tissue into the suction hole by using negative pressure suction, and cuts and decomposes the thrombus tissue by a rotating blade, avoiding the direct exposure of the blade in the blood vessel and avoiding blood vessel rupture caused by improper operation. And there is no expansion structure, avoiding the risk of bursting the blood vessel. At the same time, a slidable inlay tube is arranged outside the catheter, and arc-shaped baffles capable of blocking the suction hole are arranged on both sides of the inlay tube, which can close the suction hole when the thrombus on one side of the outer sleeve tube is completely removed, avoiding the suction and decomposition of the blood vessel inner wall tissue. A medicine feeding hole is also arranged on the inlay tube, and a medicine feeding pump is used to apply medicine to the blood vessel inner wall to dissolve the residual thrombus tissue on the blood vessel inner wall. In short, the present invention has the advantages of novel structure, convenient use, safety and stability, etc. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a three-dimensional view of the thrombus decomposition mechanism of the present invention;

[0030] Figure 3 It is a sectional view of the thrombus decomposition structure of the present invention.

[0031] Among them, 1. guide wire; 2. catheter; 21. inner catheter; 22. outer catheter; 3. thrombus decomposition mechanism; 31. inner sleeve; 32. outer sleeve; 33. ring plate; 34. suction hole; 35. decomposition component; 351. bearing; 352. blade; 36. drive component; 361. flexible shaft; 362. drive motor; 37. negative pressure component; 371. collection bottle; 372. negative pressure generator; 373. connecting pipe; 4. groove track; 41. embedded pipe; 411. medicine application hole; 412. medicine application pump; 42. arc-shaped baffle; 421. imaging positioning strip. Detailed implementation manners

[0032] The following combines the attached Figure 1 To the attached Figure 3 drawings, the detailed implementation manners of the present invention will be described in detail. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the drawings shown, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0033] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0034] It should be noted that the circuit connections involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0035] Embodiment: As Figure 1 shown, a thrombus removal device includes a guide wire 1 and a catheter 2 movably sleeved outside the guide wire 1, and a thrombus decomposition mechanism 3 is provided at the front end of the catheter 2. Among them:

[0036] As Figures 2 - 3As shown in the figure, the thrombus decomposition mechanism 3 includes an inner sleeve 31, an outer sleeve 32, a suction hole 34, a decomposition component 35, a driving component 36, and a negative pressure component 37; the inner sleeve 31 is coaxially and movably sleeved outside the guide wire 1; the outer sleeve 32 is coaxially and movably sleeved outside the inner sleeve 31 at intervals, and the front end of the outer sleeve 32 is integrally and hermetically connected to the front end of the inner sleeve 31 through an annular plate 33, and the connection between the annular plate 33 and the front end of the outer sleeve 32 is a transitional arc chamfer; a plurality of suction holes 34 are evenly provided on the surface of the outer sleeve 32 and the surface of the annular plate 33; the decomposition component 35 includes a bearing 351 coaxially and fixedly sleeved on the side of the inner sleeve 31 and a plurality of blades 352 circumferentially arranged on the side of the bearing 351, the sides of the plurality of blades 352 are movably in contact with the inner side surface of the outer sleeve 32, and the front ends of the plurality of blades 352 are movably in contact with the inner side surface of the annular plate 33, and are used for cutting and decomposing the thrombus tissue sucked through the suction holes 34; the driving component 36 is arranged at the tail end of the catheter 2, and the driving component 36 is connected to the bearing 351 and is used for driving the bearing 351 to rotate, and the driving component 36 includes a flexible shaft 361 and a driving motor 362; the flexible shaft 361 is movably sleeved outside the inner catheter 21, and one end of the flexible shaft 361 is coaxially and fixedly connected to the side of the bearing 351; the driving motor 362 is hermetically connected and arranged at the tail ends of the inner catheter 21 and the outer catheter 22, and the output shaft of the driving motor 362 is coaxially and fixedly connected to the other end of the flexible shaft 361; the negative pressure component 37 is arranged at the tail end of the catheter 2, and the negative pressure component 37 is communicated with the inside of the catheter 2 and is used for providing negative pressure suction to the suction holes 34 through the catheter 2, and the negative pressure component 37 includes a collection bottle 371 and a negative pressure generator 372, and the collection bottle 371 is connected to the lower side surface of the tail end of the outer catheter 22; the negative pressure generator 372 is arranged on the side of the collection bottle 371, and the negative pressure generator 372 is communicated with the upper part inside the collection bottle 371 through a communication pipe 373;

[0037] The catheter 2 includes an inner catheter 21 and an outer catheter 22; the inner catheter 21 is movably sleeved outside the guide wire 1, and the front end of the inner catheter 21 is fixedly connected to the inner sleeve 31; the outer catheter 22 is sleeved outside the inner catheter 21, the front end of the outer catheter 22 is fixedly connected to the outer sleeve 32, and the negative pressure component 37 is connected to the outer catheter 22; a plurality of continuous groove tracks 4 are provided on the outer surfaces of the outer sleeve 32 and the outer catheter 22, and a pipe insert 41 is movably embedded in each groove track 4, arc-shaped baffles 42 are respectively arranged on both sides of the pipe insert 41, and the arc-shaped baffles 42 are used for blocking the suction holes 34 on both sides of the groove track 4; developing positioning strips 421 are provided at the front ends of the arc-shaped baffles 42, and the plurality of developing positioning strips 421 are of different light and dark colors; a plurality of medicine application holes 411 are evenly provided on the front end surface of the pipe insert 41, the medicine application holes 411 are communicated with the inside of the pipe insert 41, and the tail end of the pipe insert 41 is connected to a medicine application pump 412, which is used for transmitting the liquid medicine through the inside of the pipe insert 41 to the medicine application holes 411 and spraying the liquid medicine to the inner wall of the blood vessel through the medicine application holes 411.

[0038] The working method of the above embodiment is as follows: Under imaging guidance, the guide wire 1 is sent through the blood vessel to the thrombus, and then the catheter 2 is movably sleeved outside the guide wire 1. The catheter 2 is sent to the thrombus. The position of the thrombus decomposition mechanism 3 is judged according to the imaging positioning strip 421. The inlay tube 41 is pulled to move the arc-shaped baffle 42, exposing the suction hole 34. The negative pressure generator 372 is started. The thrombus tissue is sucked into the suction hole 34 under the action of negative pressure suction. Then the drive motor 362 is started to drive the blade 352 to rotate, cutting and decomposing the thrombus tissue sucked into the inner side of the suction hole 34. The catheter 2 is slowly advanced to make the thrombus decomposition mechanism 3 slowly pass through the thrombus, sucking and decomposing the thrombus. And under the guidance of imaging, the positions of different inlay tubes 41 can be adjusted separately to block the suction hole 34 on one side alone, avoiding the suction hole 34 from sucking the blood vessel inner wall tissue. During the process of sucking and decomposing the thrombus, the medicine solution is provided to the medicine application hole 411 through the medicine application pump 412, so that the medicine solution acts on the blood vessel inner wall to dissolve the residual thrombus tissue on the blood vessel inner wall.

[0039] No specific models of the above electronic components are specially specified, and ordinary commercially available products can be selected as long as they can meet the usage requirements of the present invention.

[0040] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included within the protection scope of the present invention.

Claims

1. A thrombus removal device, comprising a guide wire (1) and a catheter (2) movably sleeved outside the guide wire (1), characterized in that: The front end of the catheter (2) is provided with a thrombus decomposing mechanism (3), and the thrombus decomposing mechanism (3) comprises: An inner sleeve (31) is coaxially movably sleeved on the outside of the guide wire (1); An outer sleeve (32) is coaxially movably sleeved at intervals on the outside of the inner sleeve (31); the front end of the outer sleeve (32) is integrally sealed and connected with the front end of the inner sleeve (31) via a ring plate (33); Suction holes (34), a plurality of the suction holes (34) are evenly arranged on the surface of the outer sleeve (32) and the surface of the ring plate (33); A decomposition component (35) comprises a bearing (351) coaxially fixedly sleeved on the side of the inner sleeve (31) and a plurality of blades (352) circumferentially arranged on the side of the bearing (351), the side surfaces of the plurality of blades (352) all being in active contact with the inner side surface of the outer sleeve (32), and the front ends of the plurality of blades (352) all being in active contact with the inner side surface of the ring plate (33), for cutting and decomposing thrombus tissue sucked in through the suction hole (34); A driving assembly (36) is arranged at the rear end of the catheter (2), and the driving assembly (36) is connected to the bearing (351) and is used to drive the bearing (351) to rotate; A negative pressure component (37) is arranged at the tail end of the catheter (2). The negative pressure component (37) is connected to the inside of the catheter (2) and is used to provide negative pressure suction to the suction hole (34) through the catheter (2).

2. A thrombus removal device according to claim 1, characterized in that: The catheter (2) comprises: An inner catheter (21) is movably sleeved on the outside of the guide wire (1), and the front end of the inner catheter (21) is fixedly connected to the inner sleeve (31); The outer catheter (22) is sleeved on the outside of the inner catheter (21), the front end of the outer catheter (22) is fixedly connected to the outer sleeve (32), and the negative pressure component (37) is connected to the outer catheter (22).

3. A thrombus removal device according to claim 2, characterized in that: The outer surfaces of the outer sleeve (32) and the outer conduit (22) are provided with a plurality of continuous groove tracks (4), each of the groove tracks (4) having an embedded tube (41) movably embedded therein, arc-shaped baffles (42) being respectively provided on both sides of the embedded tube (41), the arc-shaped baffles (42) being used to shield the suction holes (34) on both sides of the groove track (4).

4. A thrombus removal device as claimed in claim 3, characterized in that: The front ends of the arc-shaped baffles (42) are each provided with a developing positioning strip (421), and the plurality of developing positioning strips (421) are of different shades.

5. The thrombus removal device according to claim 3, characterized in that: A plurality of drug application holes (411) are evenly arranged on the front end surface of the embedded tube (41), and the drug application holes (411) are connected to the inside of the embedded tube (41). A drug application pump (412) is connected to the rear end of the embedded tube (41) for transferring drug solution from the inside of the embedded tube (41) to the drug application holes (411) and spraying the drug solution onto the inner wall of the blood vessel through the drug application holes (411).

6. The thrombus removal device according to claim 1, characterized in that: The drive assembly (36) comprises: A flexible shaft (361) is movably sleeved on the outside of the inner conduit (21), and one end of the flexible shaft (361) is coaxially fixedly connected to the side of the bearing (351); A drive motor (362) is provided at the tail ends of the inner conduit (21) and the outer conduit (22) in a sealed manner, and an output shaft of the drive motor (362) is coaxially fixedly connected to the other end of the flexible shaft (361).

7. The thrombus removal device according to claim 1, characterized in that: The negative pressure component (37) comprises: A collecting bottle (371) connected to the lower side of the tail end of the outer conduit (22); The negative pressure generator (372) is arranged on the side of the collecting bottle (371), and the negative pressure generator (372) is connected to the upper part of the interior of the collecting bottle (371) through a connecting pipe (373).

8. The thrombus removal device according to claim 1, characterized in that: The connection between the ring plate (33) and the front end of the outer sleeve (32) is a transitional arc chamfer.

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