Vascular calcified tissue efficient removal device and working method thereof

Abstract

The invention discloses a vascular calcified tissue efficient removal device and a working method thereof, and relates to the technical field of vascular calcified tissue removal. The device comprises a catheter used for blood vessel stretching, the catheter is arranged to be a hollow tube body, one end of the catheter is provided with a wire used for transmitting weak current and a gas tube used for transmitting gas, and the wire and the gas tube are both arranged in the catheter in a penetrating mode. Current transmitted by a wire serves as an expansion signal of the expansion interception mechanism, stopping of the current serves as a closing signal, after a magnetic ring is subjected to the current transmitted by the wire, an electromagnet generates a magnetic field, due to magnetic repulsion of the magnetic ring and the permanent magnet rods, the ends of the multiple sets of permanent magnet rods abut against an elastic filter screen, and the elastic filter screen expands; when the catheter is pulled out, the amount of abrasive dust flowing normally along with blood is reduced to a large extent, and the expansion interception mechanism is prevented from blocking an opening of a blood vessel artery.

Description

Technical Field

[0001] The present invention relates to the technical field of vascular calcified tissue removal, and in particular to a device for efficiently removing vascular calcified tissue and a working method thereof. Background Art

[0002] Calcified tissue is a substance harmful to the human body caused by the deposition of fat, thrombus, connective tissue and calcium carbonate on the inner wall of arterial blood vessels. Its production will cause the narrowing of the blood vessel lumen and poor blood flow. In severe cases, it will even block the blood vessels, causing arterial rupture and large-scale bleeding. Therefore, it is necessary to remove the calcified tissue. In the prior art, the devices used to remove calcified tissue have the disadvantages of low removal efficiency and long removal time. At the same time, a lot of heat is generated during the removal process, which will cause thermal damage to the tissues around the removal site. Not only that, excessive grinding chips can also cause blockage of blood vessels and cause other surgical complications. The prior art does not take into account the problem of recycling oversized grinding chips.

[0003] For example, a highly efficient device for removing calcified blood vessels and a working method thereof are disclosed in the Chinese invention patent publication number CN112451045A. The device for removing calcified blood vessels improves the efficiency of removing calcified blood vessels by arranging two cutting methods on the front half of the grinding wheel. At the same time, an elastic filter is installed on the catheter. The elastic filter is opened by centrifugal force during operation to intercept oversized grinding chips, thereby preventing the grinding chips from clogging the capillaries. However, the elastic filter needs to apply centrifugal force as a prerequisite for expansion in the artery. In the actual removal of calcified blood vessels, if the elastic filter is always in the state of intercepting the peeling grinding chips, It is inevitable to maintain a centrifugal rotation state, that is, the catheter is always in a rotating state. The process from the final removal of the calcified tissue to the withdrawal of the catheter still requires the catheter to be in a rotating state. Otherwise, the elastic filter cannot remain expanded after the catheter stops rotating, and the normal flow of arterial blood will carry away the accumulated debris. Once the debris accumulates too much, it may cause myocardial infarction. When the rotating catheter is withdrawn from the human artery, the expanded elastic filter and the rear end cylindrical structure will block the blood vessel opening. In addition, if the catheter is too small, it is difficult to control it in a rotating state. For this reason, we propose an efficient removal device for vascular calcified tissue and a working method thereof. Summary of the invention

[0004] The object of the present invention is to provide a highly efficient device for removing vascular calcified tissue and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] According to the first aspect of the present invention, in order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a highly efficient device for removing vascular calcified tissue, comprising:

[0006] A catheter for blood vessel probing, wherein the catheter is configured as a hollow tube, and one end of the catheter is provided with a wire for transmitting weak current and a trachea for transmitting gas, and the wire and the trachea are both arranged inside the catheter;

[0007] An expansion interception mechanism, which is installed at one end of the catheter away from the guide wire, and has a closed state and an expanded state. When in the expanded state, it is used to intercept abrasive tissue, and when in the closed state, it can perform puncture and extension. The guide wire passes through the catheter and is connected to the expansion interception mechanism;

[0008] The cutting mechanism is used for removing vascular calcified tissue. The cutting mechanism is installed in the middle of the catheter, and the trachea passes through the catheter and is connected to the cutting mechanism.

[0009] Furthermore, the expansion interception mechanism includes a plurality of groups of connection keys fixedly mounted on the end of the conduit, the plurality of groups of connection keys are arranged in a ring shape around the conduit, the conduit is connected to a seal through the connection keys, one side of the seal is bonded with an elastic filter screen through waterproof glue, and the seal is located at the center of the elastic filter screen;

[0010] The elastic filter screen has a closed state and an expanded state. When the elastic filter screen is in the closed state, it is tightly attached to the outer end surface of the conduit. When the elastic filter screen is in the expanded state, one end close to the seal is cylindrical and the other end is conical.

[0011] Furthermore, a plurality of filter holes for blood flow are provided on the side wall of the elastic filter, and the diameter of the filter holes is larger than that of red blood cells.

[0012] Furthermore, the expansion interception mechanism also includes a base located inside the elastic filter, and the base is detachably mounted on the conduit through a connecting key. The base is arranged in a circular shape, and sliding parts are symmetrically arranged at both ends of the base, and the base is arranged in the middle of the sliding parts at both ends as a mounting part, and an extension plate is welded to the end surface of the mounting part close to the sliding part, and a slide groove is formed between the extension plate and the sliding part, and a plurality of sliding blocks are slidably connected in the slide groove, and each of the sliding blocks is movably connected to a corresponding connecting rod through a universal joint, and the other end of the connecting rod is hinged to a corresponding permanent magnet rod, and the other end of the permanent magnet rod is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to a corresponding mounting seat, and the mounting seat is fixedly mounted at the mounting part in the middle of the base.

[0013] Furthermore, a magnetic ring is arranged on the outer end surface of the mounting portion, a wire penetrating the catheter is arranged at the bottom of the magnetic ring, and the magnetic ring is an electromagnet, and the magnetism of the electromagnet and the permanent magnet rod repel each other.

[0014] Furthermore, the cutting mechanism includes a carrier that can be detachably installed in the middle part of the catheter, and two groups of recesses for installation are provided on the carrier. The carrier is connected to the grinding part through the recess, and an interlocking groove is provided on the side of the carrier close to the expansion interception mechanism. An extension slider slides symmetrically in the interlocking groove, and fixed shafts are fixedly installed on the outer end surfaces of the two extension sliders, and corresponding winding rollers are fixedly installed on the two fixed shafts, and an adjustment component is arranged between the two winding rollers.

[0015] Furthermore, the adjustment component includes a lightweight aluminum plate fixed between two winding rollers, the lightweight aluminum plate is arranged in two groups, a fixed plate is welded in the middle of the two groups of lightweight aluminum plates, and the outer side wall of the fixed plate is fixedly connected with a grinding edge.

[0016] Furthermore, one end of the two extension sliders away from the interlocking groove is slidably connected with a sleeve, and the sleeve is divided into an inner and outer layer. The inner and outer layers of the sleeve are fixedly connected, and the two form an annular groove. The two extension sliders are slidably connected in the annular groove, and an air pressure part is installed inside the annular groove. The air pressure part is fixedly installed in the annular groove and spray holes are provided at both ends of the air pressure part. The spray hole is detachably connected with a pipeline, and the pipeline port abuts against the extension slider. A transmission pipe that penetrates the conduit and is connected to the air pipe is fixedly installed on the air pressure part.

[0017] Furthermore, the bottom ends of the two extension sliders are fixedly connected with springs, and the other ends of the springs are fixed on the inner wall of the ring.

[0018] According to a second aspect of the present invention, the present invention provides a working method of a device for efficiently removing vascular calcified tissue, using the above-mentioned device for efficiently removing vascular calcified tissue, comprising the following specific steps:

[0019] S1: The catheter is inserted into the patient's arterial blood vessel through the femoral artery and gradually extended to the location of the calcified tissue. At this time, the cutting mechanism is located at the calcified tissue, and the expansion interception mechanism at the front end of the catheter reserves a safe distance from the calcified tissue;

[0020] S2: A weak current is connected to the wire, and the current is transmitted to the magnetic ring through the wire. After the magnetic ring generates magnetism, the permanent magnetic rod generates a repulsive force away from the base. The ends of the multiple sets of permanent magnetic rods will abut against the elastic filter, and the elastic filter will become expanded to intercept the wear debris;

[0021] S3: Pull the catheter forward and backward or rotate it manually to remove the protruding area of ​​the calcified tissue or the larger grinding debris. Then, the air pipe is connected to the pipeline that abuts the extension slider. Under the action of the external air pump, the air pressure transmitted by the air pipe causes the extension slider to be stressed. The extension slider slides in the ring groove and the fitting groove and squeezes the spring. When the extension sliders approach each other, the lightweight aluminum plate and the fixed plate in the adjustment mechanism are pulled to move toward the center as a whole. At this time, the grinding blade on the fixed plate approaches the central catheter position, and the grinding range of the grinding blade is reduced. At this time, the catheter is rotated or pulled again, and the remaining calcified tissue is ground and removed by using the grinding blade and the grinding part.

[0022] S4: After the removal is completed, slowly pull out the catheter. When the expansion interception mechanism at the front end of the catheter is close to the blood vessel opening, the transmission current of the wire is gradually weakened, and the magnetic force of the electromagnet is gradually weakened. After the current of the wire is cut off, the permanent magnet loses its magnetism, and the permanent magnetic rod shrinks and resets due to gravity. The elastic filter is close to the catheter, realizing the gradual closing of the expansion interception mechanism. When it is closed to be smaller than the blood vessel opening, the catheter is quickly pulled out.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. The present invention uses the current transmitted by the wire as the expansion signal of the expansion interception mechanism, and uses the stop of the current as the closing signal to achieve the gradual closing of the expansion interception mechanism. After the magnetic ring is subjected to the current transmitted by the wire, the electromagnet generates a magnetic field, and due to the magnetic repulsion between the magnetic ring and the permanent magnetic rod, the ends of the multiple groups of permanent magnetic rods will abut against the elastic filter screen, and the elastic filter screen will expand to achieve interception; when the catheter is pulled out, the amount of wear debris following the normal circulation of blood is greatly reduced, and the expansion interception mechanism is prevented from blocking the opening of the blood vessel artery;

[0025] 2. The present invention uses a lightweight aluminum plate to be pulled and traction, so that the overall arc of the extension part becomes larger, and finally the length of the grinding blade on the fixed plate from the catheter becomes smaller, and the grinding range of the grinding blade is reduced. It is suitable for the grinding blade to expand the inner diameter and reduce the protruding length after initially grinding the protruding calcified tissue or larger tissue, so as to facilitate the subsequent grinding with the grinding part and avoid damaging the blood vessel due to excessive length. The grinding range and distance of the grinding blade during the removal process are artificially controlled to a certain extent, and the removal of calcified tissue is more adjustable and controllable.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the elastic filter screen after being completely disassembled in the present invention;

[0029] Figure 3 It is a left side view of the overall structure of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the expansion interception mechanism in the present invention;

[0031] Figure 5 It is a left side view of the expansion interception mechanism in the present invention;

[0032] Figure 6 It is a structural schematic diagram of the cutting mechanism in the present invention;

[0033] Figure 7 It is a structural schematic diagram of the cutting mechanism part of the present invention;

[0034] Figure 8 It is the left view of the cutting mechanism in the present invention.

[0035] Reference numerals:

[0036] 100, catheter; 200, guide wire; 300, trachea;

[0037] 400, expansion interception mechanism; 401, connection key; 402, sealing member; 403, elastic filter screen; 404, filter hole; 405, base; 406, sliding part; 407, extension plate; 408, sliding block; 409, connecting rod; 410, permanent magnet rod; 411, rotating shaft; 412, mounting seat; 413, magnetic ring;

[0038] 500, cutting mechanism; 501, carrier; 502, notch; 503, grinding part; 504, fitting groove; 505, extension slider; 506, fixed shaft; 507, winding roller; 508, adjustment component; 509, lightweight aluminum plate; 510, fixed plate; 511, grinding blade; 512, sleeve; 513, air pressure part; 514, transmission pipe; 515, spray hole. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0040] Embodiment 1:

[0041] See also Figure 1-Figure 8 The present invention provides a technical solution: a highly efficient device for removing vascular calcified tissue, comprising:

[0042] A catheter 100 for blood vessel probing, wherein the catheter 100 is configured as a hollow tube, and a wire 200 for transmitting weak current and a trachea 300 for transmitting gas are disposed at one end of the catheter 100, and the wire 200 and the trachea 300 are both disposed inside the catheter 100;

[0043] The expansion interception mechanism 400 is installed at one end of the catheter 100 away from the guide wire 200, and the expansion interception mechanism 400 has a closed state and an expanded state. When in the expanded state, it is used to intercept the wear tissue, and when in the closed state, it can perform puncture and extension. The guide wire 200 passes through the catheter 100 and is connected to the expansion interception mechanism 400;

[0044] The cutting mechanism 500 is used for removing vascular calcified tissue. The cutting mechanism 500 is installed in the middle of the catheter 100 . The trachea 300 passes through the catheter 100 and is connected to the cutting mechanism 500 .

[0045] With respect to the technical solution of this embodiment, after the cutting mechanism 500 cuts the tissue block, the blood in the dynamic state is always in a normal flow state, and the expansion interception mechanism 400 is used to intercept the wear debris tissue. Therefore, the expansion interception mechanism 400 is located downstream of the blood flow direction, and the cutting mechanism 500 is located upstream of the blood flow direction. This embodiment is mainly aimed at the prior art that the guide wire is always in a rotating state, and further improvements are made by using the power mode of a high-pressure tube and an air turbine. The current transmitted by the wire 200 is used as the expansion signal of the expansion interception mechanism 400, and the stop of the current is used as the closing signal. Therefore, as the extension carrier of this embodiment, the catheter 100 can be selected to be a material that is not conductive and does not pollute the blood. However, because the weak current transmitted does not have the ability to directly stimulate the human body to produce a physiological response, a conductor can also be selected as the material. This embodiment does not make specific restrictions here, and can be selected according to actual conditions. The wire 200 and the trachea 300 enter the interior of the tube body from the opening at the rear end of the catheter 100, and are respectively connected to the expansion interception mechanism 400 and the cutting mechanism 500 installed on the catheter 100.

[0046] According to the technical solution of this embodiment, the expansion interception mechanism 400 includes a plurality of groups of connection keys 401 fixedly mounted on the end of the catheter 100, the plurality of groups of connection keys 401 are arranged in a ring shape around the catheter 100, the catheter 100 is connected to a sealing member 402 through the connection keys 401, the sealing member 402 and the catheter 100 are slidably connected through the connection keys 401, an elastic filter screen 403 is bonded to one side of the sealing member 402 through waterproof glue, and the sealing member 402 is located at the center of the elastic filter screen 403;

[0047] It should be noted that the elastic filter 403 connected to the seal 402 can slide on the conduit 100, and the sliding distance is determined only by the length of the connection key 401. When the seal 402 is at the leftmost end of the connection key 401, the extension of the conduit 100 drives the seal 402 and the connection key 401 to move. When the conduit 100 retracts, the seal 402 moves to the right relative to the conduit 100. The distance of the seal 402 is finely adjusted within a certain range. The seal 402 is installed at the center of the elastic filter 403. The seal 402 and the elastic filter 403 are connected. The contact position of the filter screen 403 is bonded by waterproof glue, and the setting of the seal 402 prevents blood from penetrating into the elastic filter screen 403. The elastic filter screen 403 has a closed state and an expanded state. When the elastic filter screen 403 is in the closed state, it is tightly attached to the outer end surface of the catheter 100. When the elastic filter screen 403 is in the expanded state, its front end is cylindrical and the rear end is conical. The elastic filter screen 403 is randomly arranged with filter holes 404 for blood flow, ensuring that the elastic filter screen 403 is tightly attached to and filled with the blood vessel channel after expanding to the limit position, further ensuring that the grinding debris does not follow the blood flow into other tissues of the human body.

[0048] Furthermore, the filter hole 404 of the elastic filter 403 has the largest inner diameter in the limit state. To prevent the normal circulation of blood, the filter hole 404 of the elastic filter 403 is in the limit state when it is in the limit expansion state, and the inner diameter of the filter hole 404 is set to the size that the maximum red blood cells can pass through.

[0049] According to the technical solution of the present embodiment, the expansion interception mechanism 400 further includes a base 405 located inside the elastic filter 403, the base 405 is detachably mounted on the catheter 100 via a connecting key 401, the base 405 is arranged in a circular shape, sliding portions 406 are symmetrically arranged at both ends of the base 405, and the base 405 is arranged in the middle of the sliding portions 406 at both ends as a mounting portion, an extension plate 407 is welded to the end surface of the mounting portion close to the sliding portion 406, a slide groove is formed between the extension plate 407 and the sliding portion 406, and a plurality of sliding blocks 408 are slidably connected in the slide groove, in order to prevent the sliding block 408 from detaching from the extension plate 407 during the sliding process, each sliding block 408 is limited and slidable in the sliding portion 406 by the extension plate 407, and each sliding block 408 is movably connected to a corresponding The connecting rod 409 has a corresponding permanent magnet rod 410 hinged on the other end thereof, and the other end of the permanent magnet rod 410 is fixedly connected to a rotating shaft 411, and the rotating shaft 411 is rotatably connected to a corresponding mounting seat 412, and the mounting seat 412 is fixedly installed at the mounting portion in the middle of the base 405. When the permanent magnet rod 410 is subjected to a repulsive force, the rotating shaft 411 to which the permanent magnet rod 410 is fixedly connected is rotatably connected to the mounting seat 412, so the permanent magnet rod 410 will move away from the base 405, and because of the rotating shaft 411, the permanent magnet rod 410 will rotate counterclockwise, and because of the movable connection between the sliding block 408 and the connecting rod 409, the sliding block 408 slides in the sliding portion 406, and in this way, the elastic filter screen 403 can be expanded and converted into an expanded state, so as to intercept the ground tissue waste.

[0050] The outer end surface of the mounting portion is provided with a magnetic ring 413, and a wire 200 penetrating the catheter 100 is provided at the bottom of the magnetic ring 413. The magnetic ring 413 is an electromagnet, and the magnetism of the electromagnet and the permanent magnet rod 410 repel each other. When the magnetic ring 413 is subjected to the current transmitted by the wire 200, according to the right-hand screw rule, the electromagnet generates a magnetic field, and the iron core of the magnetic ring 413 gathers to strengthen the magnetic force. Due to the magnetic repulsion between the magnetic ring 413 and the permanent magnet rod 410, the permanent magnet rod 410 generates a repulsive force away from the base 405, and finally the permanent magnet rod 410 rotates, and the ends of the multiple groups of permanent magnet rods 410 will abut against the elastic filter screen 403, and the elastic filter screen 403 expands, thereby achieving Now intercepted, and after the current of the wire 200 is cut off, the permanent magnet loses its magnetism, the permanent magnetic rod 410 shrinks and resets due to gravity, and the elastic filter 403 is close to the catheter 100. Then in this embodiment, a method of pulling out the catheter 100 from the blood vessel opening is provided, that is, when the expansion interception mechanism 400 at the front end of the catheter 100 is close to the blood vessel opening, the transmission current of the wire 200 is gradually weakened, and the magnetic force of the electromagnet is gradually weakened, so that the expansion interception mechanism 400 is gradually closed, and when it is closed to be smaller than the blood vessel opening, the catheter 100 is quickly pulled out, thereby greatly reducing the amount of wear debris following the normal circulation of blood when the catheter 100 is pulled out.

[0051] With respect to the technical solution of this embodiment, the cutting mechanism 500 includes a carrier 501 detachably mounted on the middle end of the catheter 100. The carrier 501 can be configured to be snap-fitted, which is not specifically limited in this embodiment. Two groups of recesses 502 for installation are provided on the carrier 501. The carrier 501 is snap-fitted with a grinding portion 503 through the recesses 502. An engaging groove 504 is provided on one side of the carrier 501 close to the expansion intercepting mechanism 400. An extension slider 505 is symmetrically slidable in the engaging groove 504. The extension slider 505 can slide in the engaging groove 504. Fixed shafts 506 are fixedly mounted on the outer end surfaces of the two extension sliders 505. Corresponding winding rollers 507 are fixedly mounted on the two fixed shafts 506. An annular adjustment component 508 is provided between the two winding rollers 507.

[0052] The adjustment assembly 508 includes a lightweight aluminum plate 509 fixed between two winding rollers 507. The lightweight aluminum plate 509 is arranged in two groups. A fixing plate 510 is welded in the middle of the two groups of lightweight aluminum plates 509. The outer wall of the fixing plate 510 is fixedly connected with a grinding blade 511. The lightweight aluminum plate 509 has excellent ductility, so the lightweight aluminum plate 509 can be deformed to a certain extent, and the cost is low. The cost of replacing the lightweight aluminum plate 509 is low. The lightweight aluminum plate 509 is arranged in two groups. The fixing plate 510 is located between the two groups of lightweight aluminum plates 509 and is connected to the lightweight aluminum plate 509. The lightweight aluminum plate 509 is welded. In order to ensure the extensibility of the lightweight aluminum plate 509 during the pulling process, the lightweight aluminum plate 509 and the fixed plate 510 are spot welded to ensure that the lightweight aluminum plate 509 does not separate from the fixed plate 510 when being pulled by the extension slider 505. The ends of the two lightweight aluminum plates 509 away from the fixed plate 510 are both wound on the corresponding winding rollers 507, and one end of the lightweight aluminum plate 509 is wound on the winding roller 507. Therefore, during the replacement before each use, the lightweight aluminum plate 509 can be quickly removed from the winding roller 507, which is convenient and practical.

[0053] In order to make the extension slider 505 slide in the fitting groove 504 and the annular groove, the two extension sliders 505 are slidably connected with a sleeve 512 at one end away from the fitting groove 504. The sleeve 512 is divided into an inner and outer layer. The inner and outer layers of the sleeve 512 are fixedly connected and form an annular groove. The two extension sliders 505 are slidably connected in the annular groove. A pneumatic part 513 is installed inside the annular groove. The pneumatic part 513 is fixedly installed in the annular groove and spray holes 515 are opened at both ends of the pneumatic part 513. The spray hole 515 is detachably connected with a pipeline, and the pipeline port abuts against the extension slider 505. The pneumatic part A transmission tube 514 penetrating the conduit 100 and connected to the trachea 300 is fixedly installed on 513. Therefore, under the action of the external air pump, the air pressure transmitted by the trachea 300 causes the extension slider 505 to be stressed, and the extension slider 505 slides in the annular groove and the interlocking groove 504. The lightweight aluminum plate 509 wound around the roller 507 on the extension slider 505 is pulled, thereby causing deformation. When the two extension sliders 505 approach each other, the lightweight aluminum plate 509 is pulled and pulled, and the overall arc of the extension part becomes larger. Finally, the length of the grinding edge 511 on the fixed plate 510 from the conduit 100 becomes smaller, and the grinding The grinding range of the blade 511 is reduced, which is suitable for the grinding blade 511 to expand the inner diameter and reduce the protruding length after initially grinding the protruding calcified tissue or the larger one, so as to facilitate the subsequent grinding with the grinding part 503, avoid damaging the blood vessel due to excessive length, so that the grinding range and distance of the grinding blade 511 during the removal process can be adjusted and controlled according to actual conditions, and the removal of calcified tissue is more adjustable and controllable. As can be seen from the accompanying drawings, the sleeve 512 is slidably connected to the extension slider 505 of its inner layer, so the extension slider 505 provides a certain support force so that the sleeve 512 is coaxially arranged with the catheter 100. Furthermore, As can be seen from the above, a transmission tube 514 that penetrates the catheter 100 and is connected to the trachea 300 is fixedly installed on the air pressure part 513. Therefore, the transmission tube 514 provides partial supporting force with the position where the catheter 100 penetrates as the support point, thereby ensuring that the sleeve 512 and the catheter 100 are stably coaxially arranged; as can be seen from the attached drawings, the extension slider 505 located at the annular groove of the sleeve 512 can be further extended, and the arc-shaped areas at both ends extend the side walls of the sleeve 512, which acts as a limit during the sliding process to prevent the sleeve 512 from detaching. This embodiment is not specifically limited here and can be selected according to actual conditions.

[0054] Furthermore, the bottom ends of the two extension sliders 505 are fixedly connected with springs, and the other ends of the springs are fixed on the inner wall of the ring. The provided springs are used to facilitate the extension sliders 505 to be reset.

[0055] Embodiment 2:

[0056] The present invention provides a working method of a device for efficiently removing vascular calcified tissue, using a device for efficiently removing vascular calcified tissue described in Example 1, including the following specific steps:

[0057] S1: The catheter 100 is inserted into the patient's arterial blood vessel through the femoral artery and gradually extended to the location of the calcified tissue. At this time, the cutting mechanism 500 is located at the calcified tissue, and the expansion interception mechanism 400 at the front end of the catheter 100 is kept at a safe distance from the calcified tissue;

[0058] S2: A weak current is connected to the wire 200, and the current is transmitted to the magnetic ring 413 through the wire 200. After the magnetic ring 413 generates magnetism, the permanent magnetic rods 410 generate a repulsive force away from the base 405, and the ends of the multiple groups of permanent magnetic rods 410 will abut against the elastic filter 403, and the elastic filter 403 will change to an expanded state to intercept the wear debris;

[0059] S3: After the catheter 100 is pulled forward and backward or manually rotated, and the protruding area of ​​the calcified tissue or the larger grinding debris is removed, the air pipe 300 is connected to the pipeline abutting the extension slider 505. Under the action of the external air pump, the air pressure transmitted by the air pipe 300 causes the extension slider 505 to be stressed. The extension slider 505 slides in the annular groove and the interlocking groove 504 and squeezes the spring. When the extension sliders 505 are close to each other, the lightweight aluminum plate 509 and the fixed plate 510 in the adjustment mechanism are pulled to move the entirety toward the center. At this time, the grinding blade 511 on the fixed plate 510 approaches the central catheter 100 position, and the grinding range of the grinding blade 511 is reduced. At this time, the catheter 100 is rotated again or the catheter 100 is pulled, and the remaining calcified tissue is ground and removed by the grinding blade 511 and the grinding part 503;

[0060] S4: After the removal is completed, the catheter 100 is slowly pulled out. When the expansion interception mechanism 400 at the front end of the catheter 100 is close to the blood vessel opening, the transmission current of the wire 200 is gradually weakened, and the magnetic force of the electromagnet is gradually weakened. After the current of the wire 200 is cut off, the permanent magnet loses its magnetism, and the permanent magnetic rod 410 shrinks and returns to its original position due to gravity. The elastic filter 403 is tightly attached to the catheter 100, and the expansion interception mechanism 400 is gradually closed. When it is closed to be smaller than the blood vessel opening, the catheter 100 is quickly pulled out.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When an element is referred to as being "assembled on", "installed on", "fixed on" or "set on" another element, it can be directly on the other element or there can also be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A highly efficient device for removing vascular calcified tissue, characterized in that: include: A catheter (100) for blood vessel probing, the catheter (100) being configured as a hollow tube, and one end of the catheter (100) being provided with a wire (200) for transmitting weak current and a trachea (300) for transmitting gas, and the wire (200) and the trachea (300) are both arranged inside the catheter (100); An expansion interception mechanism (400), the expansion interception mechanism (400) being installed at one end of the catheter (100) away from the guide wire (200), and the expansion interception mechanism (400) being in a closed state and an expanded state, being used for intercepting abrasive tissue when in the expanded state, and being capable of puncturing and probing when in the closed state, the guide wire (200) passing through the catheter (100) and being connected to the expansion interception mechanism (400); The cutting mechanism (500) is used for removing vascular calcified tissue. The cutting mechanism (500) is installed in the middle of the catheter (100). The trachea (300) passes through the catheter (100) and is connected to the cutting mechanism (500).

2. The device for efficiently removing vascular calcified tissue according to claim 1, characterized in that: The expansion interception mechanism (400) comprises a plurality of groups of connection keys (401) fixedly mounted on the end of the catheter (100), the plurality of groups of connection keys (401) being arranged in a ring shape around the catheter (100), the catheter (100) being connected to a sealing member (402) via the connection keys (401), one side of the sealing member (402) being bonded with an elastic filter screen (403) via waterproof adhesive, and the sealing member (402) being located at the center of the elastic filter screen (403); The elastic filter (403) has a closed state and an expanded state. When the elastic filter (403) is in the closed state, it is tightly attached to the outer end surface of the catheter (100). When the elastic filter (403) is in the expanded state, one end close to the sealing member (402) is cylindrical, and the other end is conical.

3. The device for efficiently removing vascular calcified tissue according to claim 2, characterized in that: The side wall of the elastic filter (403) is provided with a plurality of filter holes (404) for blood flow, and the diameter of the filter holes (404) is larger than that of red blood cells.

4. The device for efficiently removing vascular calcified tissue according to claim 3, characterized in that: The expansion interception mechanism (400) further comprises a base (405) located inside the elastic filter (403), the base (405) being detachably mounted on the catheter (100) via a connecting key (401), the base (405) being arranged in a circular shape, sliding parts (406) being symmetrically arranged at both ends of the base (405), and a mounting part being arranged between the sliding parts (406) at both ends of the base (405), an extension plate (407) being welded to the end face of the mounting part close to the sliding part (406), and the extension plate (407) and the sliding part (406) being symmetrically arranged at both ends of the base (405). A slide groove is formed between the parts (406), and a plurality of sliding blocks (408) are slidably connected in the slide groove. Each of the sliding blocks (408) is movably connected to a corresponding connecting rod (409) through a universal joint. The other end of the connecting rod (409) is hinged to a corresponding permanent magnet rod (410). The other end of the permanent magnet rod (410) is fixedly connected to a rotating shaft (411). The rotating shaft (411) is rotatably connected to a corresponding mounting seat (412), and the mounting seat (412) is fixedly installed at the mounting portion in the middle of the base (405).

5. The device for efficiently removing vascular calcified tissue according to claim 4, characterized in that: The outer end surface of the mounting portion is provided with a magnetic ring (413), the bottom of the magnetic ring (413) is provided with a wire (200) penetrating the catheter (100), and the magnetic ring (413) is an electromagnet, and the magnetism of the electromagnet and the permanent magnet rod (410) repel each other.

6. The device for efficiently removing vascular calcified tissue according to claim 4, characterized in that: The cutting mechanism (500) comprises a carrier (501) detachably mounted in the middle of the catheter (100), the carrier (501) being provided with two groups of recesses (502) for mounting, the carrier (501) being connected to a grinding portion (503) via the recesses (502), a fitting groove (504) being provided on one side of the carrier (501) close to the expansion interception mechanism (400), an extension slider (505) symmetrically sliding in the fitting groove (504), a fixed shaft (506) being fixedly mounted on the outer end surfaces of the two extension sliders (505), corresponding winding rollers (507) being fixedly mounted on the two fixed shafts (506), and an adjustment component (508) being arranged between the two winding rollers (507).

7. The device for efficiently removing vascular calcified tissue according to claim 6, characterized in that: The adjustment assembly (508) includes a lightweight aluminum plate (509) fixed between two winding rollers (507), wherein the lightweight aluminum plate (509) is arranged in two groups, a fixed plate (510) is welded in the middle of the two groups of lightweight aluminum plates (509), and a grinding blade (511) is fixedly connected to the outer wall of the fixed plate (510).

8. The device for efficiently removing vascular calcified tissue according to claim 7, characterized in that: The two extension sliders (505) are slidably connected to one end away from the engaging groove (504) with a sleeve (512), and the sleeve (512) is divided into an inner and outer layer. The inner and outer layers of the sleeve (512) are fixedly connected, and the two form an annular groove. The two extension sliders (505) are slidably connected in the annular groove, and a pneumatic part (513) is installed inside the annular groove. The pneumatic part (513) is fixedly installed in the annular groove and spray holes (515) are provided at both ends of the pneumatic part (513). The spray holes (515) are detachably connected to a pipeline, and the pipeline port abuts against the extension slider (505). A transmission pipe (514) that penetrates the conduit (100) and is connected to the air pipe (300) is fixedly installed on the pneumatic part (513).

9. The device for efficiently removing vascular calcified tissue according to claim 8, characterized in that: The bottom ends of the two extension sliders (505) are fixedly connected with springs, and the other ends of the springs are fixed on the inner wall of the ring.

10. A working method of a device for efficiently removing vascular calcified tissue, using the device for efficiently removing vascular calcified tissue according to any one of claims 1 to 8, characterized in that: The specific steps include: S1: The catheter (100) is inserted into the patient's arterial blood vessel through the femoral artery and gradually extended to the location of the calcified tissue. At this time, the cutting mechanism (500) is located at the calcified tissue, and the expansion interception mechanism (400) at the front end of the catheter (100) is kept at a safe distance from the calcified tissue; S2: A weak current is connected to the wire (200), and the current is transmitted to the magnetic ring (413) through the wire (200). After the magnetic ring (413) generates magnetism, the permanent magnetic rod (410) generates a repulsive force away from the base (405), and the ends of the multiple groups of permanent magnetic rods (410) abut against the elastic filter (403), and the elastic filter (403) changes to an expanded state, so as to intercept the wear debris; S3: After the catheter (100) is pulled forward and backward or manually rotated to remove the protruding area of ​​the calcified tissue or the larger grinding debris, the air pipe (300) is connected to the pipeline of the extension slider (505). Under the action of the external air pump, the air pressure transmitted by the air pipe (300) causes the extension slider (505) to be stressed. The extension slider (505) slides in the annular groove and the interlocking groove (504) and squeezes the spring. When the extension sliders (505) are close to each other, the lightweight aluminum plate (509) and the fixed plate (510) in the adjustment mechanism are pulled to move the entirety toward the center. At this time, the grinding blade (511) on the fixed plate (510) approaches the central catheter (100) position, and the grinding range of the grinding blade (511) is reduced. At this time, the catheter (100) is rotated again or the catheter (100) is pulled, and the remaining calcified tissue is ground and removed using the grinding blade (511) and the grinding portion (503); S4: After the removal is completed, the catheter (100) is slowly pulled out. When the expansion interception mechanism (400) at the front end of the catheter (100) is close to the blood vessel opening, the transmission current of the wire (200) is gradually weakened, and the magnetic force of the electromagnet is gradually weakened. After the current of the wire (200) is cut off, the permanent magnet loses its magnetism, and the permanent magnetic rod (410) shrinks and returns to its original position due to gravity. The elastic filter (403) is tightly attached to the catheter (100), and the expansion interception mechanism (400) is gradually closed. When it is closed to be smaller than the blood vessel opening, the catheter (100) is quickly pulled out.

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