Vascular calcified tissue eliminating device

Abstract

The invention belongs to the technical field of vascular calcification tissue elimination and discloses a vascular calcification tissue elimination device which comprises a flexible driving shaft, a driving block is fixed to one end of the flexible driving shaft, a micro adjusting motor is fixed in the driving block, an adjusting rod is fixedly connected to the output end of the micro adjusting motor, and a first bevel gear is fixedly connected to the other end of the adjusting rod. The surface of the first bevel gear is engaged with a second bevel gear, and the second bevel gear is fixedly connected with a rotating shaft; the end face, close to one end of the driving block, of the grinding head is fixedly connected with an arc-shaped plate, and the middle side face of the arc-shaped plate is fixedly connected with the rotating shaft. When a flexible driving shaft drives a grinding head to move in a blood vessel, a micro adjusting motor is started to drive an adjusting rod to rotate, so that a second bevel gear drives a rotating shaft to rotate, two arc-shaped plates synchronously rotate, the angle of the grinding head is adjusted, and the grinding head is driven to move along with the flexible driving shaft when the grinding head slides along with the flexible driving shaft. Angle adjustment can be carried out at tortuous and lesion positions.

Description

Technical Field

[0001] The present invention belongs to the technical field of vascular calcified tissue elimination, and particularly relates to a device for eliminating vascular calcified tissue. Background Art

[0002] It is mainly manifested as an increase in vascular wall stiffness and a decrease in compliance, which easily leads to myocardial ischemia, left ventricular hypertrophy and heart failure, and triggers thrombosis and plaque rupture. It is one of the important factors for the high incidence and high mortality of cardiovascular and cerebrovascular diseases; it is also an important biomarker for the occurrence of atherosclerotic cardiovascular events, stroke and peripheral vascular diseases. The traditional concept has always considered vascular calcification as a passive, degenerative and inevitable terminal process. However, recent clinical and basic research results have shown that vascular calcification is similar to the process of bone development and cartilage formation, and is an active, adjustable, treatable and preventable process.

[0003] A patent with the Chinese invention patent publication number CN113288334A discloses a cardiovascular interventional surgery device and its working method for the integration of calcified tissue removal, recovery and cooling. The key points of its technical solution are: including a guide wire, a spiral drive shaft sleeved on the outer periphery of the guide wire, a step drill fixed on the outer periphery of a local section of the spiral drive shaft, 6 thin-walled curved surface connectors for fixedly connecting the step drill and the spiral drive shaft, a sheath tube, and an elastic filter screen with controllable opening and closing arranged on the front side of the step drill. The spiral drive shaft is driven to rotate by a power mechanism; a sleeve is fixedly arranged at the front part of the step drill, through holes are evenly arranged on the step drill, the elastic filter screen is a cylindrical structure with an open end at the rear end, and it is fixed at a position close to the end of the guide wire. 4 connecting rods are fixed at the rear end of the elastic filter screen and connected to the front end of the sleeve of the step drill; the end of the guide wire is coated with a soft material to avoid damage to the inner wall of the blood vessel. In the present invention, through holes are opened on the step drill to reduce the accumulation of heat by increasing the flow of liquid.

[0004] However, the above technologies often have the following defects:

[0005] Although an elastic filter screen is installed on the guide wire, the opening and closing of the elastic filter screen are controlled by the connecting rod connected to the step drill to intercept abrasive debris with too large size, thus avoiding the blockage of capillaries by abrasive debris. Through the specially designed thin-walled curved surface connector, the smooth blood flow during the operation is ensured, and the debris is prevented from depositing around the heart again and becoming the focus for the reformation of calcified tissue. However, during the use of the grinding head, due to the tortuous or complex lesions of some blood vessels, the movement inside the blood vessel is inconvenient, and the grinding head cannot be finely adjusted in angle, so that it is not easy to pass through the inside of the blood vessel when the grinding head moves inside the blood vessel, and the grinding head cannot adapt to different blood vessel states.

[0006] Therefore, the present invention provides a device for eliminating vascular calcified tissue. Summary of the Invention

[0007] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a device for eliminating vascular calcified tissue, which solves the problems in the background art.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A device for eliminating vascular calcified tissue, comprising:

[0010] A flexible drive shaft, one end of the flexible drive shaft is fixedly connected with a drive block, a micro-adjustment motor is fixedly connected inside the drive block, the output end of the micro-adjustment motor is fixedly connected with an adjustment rod, the other end of the adjustment rod is fixedly connected with a first bevel gear, the surface of the first bevel gear is engaged with a second bevel gear, and a rotating shaft is fixedly connected to the second bevel gear;

[0011] A grinding head, an arc-shaped plate is fixedly connected to the end face of the grinding head close to the drive block, and the middle side surface of the arc-shaped plate is fixedly connected with the rotating shaft.

[0012] Further, a sealing sleeve is sleeved outside the first bevel gear and the second bevel gear, the adjustment rod and the rotating shaft respectively pass through the sealing sleeve, so that the adjustment rod and the rotating shaft are respectively rotationally connected with the sealing sleeve, and the sealing sleeve is fixedly connected with the drive block.

[0013] Further, it further includes a bearing bottom plate, a control box is fixedly connected to the upper surface of the bearing bottom plate, a storage groove is opened on the upper surface of the bearing bottom plate around the control box, an operating handle that is separated from the control box and electrically connected to the control box is installed inside the storage groove, a micro-motor is arranged inside the operating handle, and the output end of the micro-motor is fixedly connected with the flexible drive shaft.

[0014] Further, the flexible drive shaft penetrates through the drive block and is fixedly connected with the grinding head, and the flexible drive shaft is rotationally connected with the grinding head. A push rod is slidably connected to the end of the flexible drive shaft, a guide wire is slidably inserted into the flexible drive shaft, the end of the guide wire is fixedly connected with the push rod, the other end of the push rod is fixedly connected with a moving rod, a mounting rod is slidably sleeved on the surface of the moving rod, the mounting rod is rotationally connected with the grinding head, sliding grooves are annularly arranged on the surface of the mounting rod, a cross-shaped sliding plate that is slidably connected with the sliding grooves is arranged inside the mounting rod, one side surface of the cross-shaped sliding plate is fixedly connected with the moving rod, turning plates are rotationally connected to the four corners on the periphery of the cross-shaped sliding plate, the other end of the turning plate is rotationally connected with an elastic filter screen, the elastic filter screen is slidably sleeved on the periphery of the mounting rod, and a limiting block is fixedly connected to the periphery of the other end of the mounting rod.

[0015] Further, a return spring is fixedly connected to the other side surface of the cross-shaped sliding plate.

[0016] Further, a through groove is formed in the moving rod, an elastic column is arranged inside the through groove, the middle of the elastic column is fixedly connected to the through groove, clamping blocks which are slidably connected to the through groove are fixedly connected to both ends of the elastic column, and an arc-shaped groove adapted to the clamping blocks is formed inside the mounting rod.

[0017] Further, two arc-shaped protective plates are symmetrically arranged on the circumferential side of one end of the mounting rod close to the moving rod, a pressing spring is fixedly connected between the opposite surfaces on both sides of the two arc-shaped protective plates, a pushing plate is rotatably connected to the opposite surface of one end of the two arc-shaped protective plates close to the cross-shaped sliding plate, the other end of the pushing plate is fixedly connected to the cross-shaped sliding plate, and activity grooves corresponding to the pushing plates are formed on both sides of the surface of the mounting rod, and the two pushing plates are respectively slidably connected in the corresponding activity grooves.

[0018] Further, four avoiding grooves are formed on the opposite surfaces of one end of the two arc-shaped protective plates close to the cross-shaped sliding plate, and the four avoiding grooves respectively correspond to the cross-shaped sliding plate.

[0019] Further, a fixing rod is fixedly connected to one end of the mounting rod far from the moving rod, and an endoscope camera electrically connected to a control box is fixedly connected to the other end of the fixing rod.

[0020] Further, pressure sensors are fixedly connected to the circumferential side of the grinding head in an annular array, and the pressure sensors are electrically connected to the control box.

[0021] Explanations for the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0022] Fixed connection means that after the parts or components are fixed, there is no relative movement connection. It is divided into two types: detachable connection and non-detachable connection.

[0023] (1) Detachable connection uses screws, splines, wedge pins, etc. to fix the parts together. This connection method can be disassembled during maintenance and will not damage the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedge pins), and they must be fastened properly.

[0024] (2) Non-detachable connection mainly refers to welding, riveting and mortise fitting, etc. Since it needs to be forged, sawed or oxy-cut to be disassembled during maintenance or replacement, the spare parts generally cannot be used twice. At the same time, during connection, attention should be paid to process quality, technical inspection and remedial measures (such as correction, polishing, etc.).

[0025] Thread connection means a detachable connection that connects the connected parts into one body with threaded parts (or the threaded parts of the connected parts).

[0026] A sliding connection means that two objects are in contact but not fixed, and they can slide relative to each other.

[0027] A rotational connection means that the connection between parts allows the parts to rotate relative to each other.

[0028] Advantages of the present invention:

[0029] 1. For the vascular calcified tissue elimination device of the present invention, through the setting of structures such as a driving mechanism, an adjusting mechanism, and a filtering and receiving mechanism, the flexible drive shaft and the guide wire are inserted into the blood vessel. The monitoring mechanism monitors the tortuous and diseased positions inside the blood vessel. When the flexible drive shaft drives the grinding head to move inside the blood vessel, according to the specific positions of the tortuosity and the lesion, the micro-adjusting motor is started, and its output end drives the adjusting rod to rotate, so that the second bevel gear drives the rotating shaft to rotate, and the two arc-shaped plates rotate synchronously, so that the angle of the grinding head is adjusted, so that when the grinding head slides along with the flexible drive shaft, it can adjust the angle at the tortuous and diseased positions, which not only makes it more convenient for the grinding head to move, but also makes it easier for the grinding head to move inside the blood vessel, so that the grinding head can be applicable to blood vessels in different states;

[0030] 2. For the vascular calcified tissue elimination device of the present invention, through the setting of structures such as a driving mechanism, an adjusting mechanism, and a filtering and receiving mechanism, both the flexible drive shaft and the grinding head are inserted into the blood vessel. When the grinding head touches the calcified tissue inside the blood vessel, it blocks the flexible drive shaft and the grinding head, so that the grinding head stops moving. Push the guide wire, so that the guide wire slides inside the flexible drive shaft, push the moving rod to move, so that the cross-shaped sliding plate slides inside the mounting rod, and then push the elastic filter net to move synchronously. Through the setting of the limit block, the flip plate is pushed to open the elastic filter net, so that the elastic filter net fits against the inner wall of the blood vessel. Thus, when the grinding head grinds the calcified tissue, the elastic filter net intercepts the grinding debris to prevent the grinding debris from blocking the capillaries. After the calcified tissue is cleaned, pull the guide wire to reset the elastic filter net, so that the flip plate resets, and the elastic filter net is sleeved on the two arc-shaped protective plates. This not only prevents the grinding debris from detaching from the elastic filter net and affecting the blood vessel again, but also makes the elastic filter net separate from the inner wall of the blood vessel, avoiding damage to the inner wall of the blood vessel by the elastic filter net;

[0031] 3. The vascular calcified tissue elimination device of the present invention, through the settings of structures such as a driving mechanism, an adjusting mechanism, a filtering and storage mechanism, and a linkage protection mechanism, after the grinding head fits with the calcified tissue, the elastic filter screen is driven to move by the guide wire, so that the moving rod drives the cross sliding plate to move, so that the cross sliding plate drives the pushing plate to move, so that the two arc-shaped protection plates are separated from the grinding head. Through the elastic force of the pressing spring, one side of the two arc-shaped protection plates approaches each other, avoiding the influence of the arc-shaped protection plates on the use of the grinding head. When the calcified tissue is removed, the elastic filter screen resets, so that the pushing plate drives the two arc-shaped protection plates to move, so as to block the grinding protrusions on the surface of the grinding head through the arc-shaped protection plates, avoiding the damage of blood vessels caused by the blood vessel contraction fitting with the grinding protrusions, and through the elastic force of the pressing spring, the two arc-shaped protection plates fit more tightly with the grinding head;

[0032] 4. The vascular calcified tissue elimination device of the present invention, through the settings of structures such as a driving mechanism, a filtering and storage mechanism, a monitoring mechanism, and a linkage protection mechanism, when the flexible drive shaft and the grinding head move inside the blood vessel, through the setting of the endoscope camera module, the pictures of the tortuosity and lesion positions inside the blood vessel are transmitted to the display screen, thus facilitating the medical staff to observe the situation inside the blood vessel, enabling the medical staff to adjust the angle of the grinding head through the adjusting mechanism, making it easier for the grinding head to pass through the blood vessel, enabling the grinding head to be applicable to blood vessels in different states. At the same time, when the grinding head removes the calcified tissue, through the setting of the pressure sensor, the pressure of the grinding head fitting with the blood vessel inner wall is monitored, and the rotation speed of the grinding head is adjusted according to the data monitored by the pressure sensor, thus avoiding the damage of the blood vessel caused by the grinding head during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of the present invention;

[0035] Figure 2 It is a schematic structural diagram of the second perspective of the present invention;

[0036] Figure 3 It is a schematic structural diagram of the positional relationship between the operating handle and the driving mechanism, etc. of the present invention;

[0037] Figure 4 It is a schematic structural diagram of the positional relationship between the adjusting mechanism and the filtering and storage mechanism, etc. of the present invention;

[0038] Figure 5 Schematic diagram of the positional relationship of the adjustment mechanism and the filtering and storage mechanism of the present invention from a second perspective;

[0039] Figure 6 Schematic diagram of the partial positional relationship of the adjustment mechanism of the present invention;

[0040] Figure 7 Schematic diagram of the positional relationship of the filtering and storage mechanism, the linkage protection mechanism, etc. of the present invention;

[0041] Figure 8 Schematic diagram of the disassembled structure of the linkage protection mechanism, the monitoring mechanism, etc. of the present invention;

[0042] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of part A;

[0043] Figure 10 Schematic diagram of the disassembled structure of the monitoring mechanism, the driving mechanism, etc. of the present invention;

[0044] Figure 11 For the present invention Figure 10 Enlarged schematic diagram of part B.

[0045] In the figure: 101, bearing base plate; 102, control box; 103, storage groove; 104, operation handle; 201, flexible drive shaft; 202, guide wire; 301, drive block; 302, micro-adjustment motor; 303, adjustment rod; 304, first bevel gear; 305, second bevel gear; 306, sealing sleeve; 307, grinding head; 308, arc plate; 309, rotating shaft: 401, push rod; 402, moving rod; 403, mounting rod; 404, sliding groove; 405, return spring; 406, turning plate; 407, elastic filter screen; 408, limit block; 501, fixed rod; 502, endoscope camera; 503, pressure sensor; 601, arc-shaped protection plate; 602, abutting spring; 603, push plate; 604, cross sliding plate; 701, through groove; 702, elastic column; 703, clamping block; 8, movable groove; 9, avoidance groove. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0048] In the present invention, the control mechanism includes a bearing base plate 101, a control box 102, a storage groove 103, and an operating handle 104; the driving mechanism includes a flexible drive shaft 201 and a guide wire 202; the adjusting mechanism includes a driving block 301, a micro-adjusting motor 302, an adjusting rod 303, a first bevel gear 304, a second bevel gear 305, a sealing sleeve 306, a grinding head 307, an arc-shaped plate 308, and a rotating shaft 309; the filtering and storage mechanism includes a push rod 401, a moving rod 402, a mounting rod 403, a sliding groove 404, a return spring 405, a flipping plate 406, an elastic filter screen 407, and a limiting block 408; the monitoring mechanism includes a fixed rod 501, an endoscope camera 502, and a pressure sensor 503; the linkage protection mechanism includes an arc-shaped protection plate 601, a pressing spring 602, a push plate 603, and a cross sliding plate 604; the clamping mechanism includes a through groove 701, an elastic column 702, and a clamping block 703.

[0049] As Figure 1-11 shown, a vascular calcified tissue elimination device includes:

[0050] A flexible drive shaft 201, one end of the flexible drive shaft 201 is fixedly connected to a drive block 301, a micro-adjusting motor 302 is fixedly connected inside the drive block 301, the output end of the micro-adjusting motor 302 is fixedly connected to an adjusting rod 303, the other end of the adjusting rod 303 is fixedly connected to a first bevel gear 304, a second bevel gear 305 is meshed on the surface of the first bevel gear 304, and a rotating shaft 309 is fixedly connected to the second bevel gear 305;

[0051] A grinding head 307, an arc-shaped plate 308 is fixedly connected to the end face of the grinding head 307 near one end of the drive block 301, and the middle side surface of the arc-shaped plate 308 is fixedly connected to the rotating shaft 309.

[0052] Insert the flexible drive shaft 201 into the blood vessel, so that the grinding head 307 is synchronously inserted into the blood vessel. Push the flexible drive shaft 201 to move the grinding head 307 inside the blood vessel. When the grinding head 307 is at the tortuous and diseased positions of the blood vessel, start the micro-adjustment motor 302, and its output end drives the adjusting rod 303 to rotate, so that the first bevel gear 304 drives the second bevel gear 305 to rotate, and the second bevel gear 305 drives the rotating shaft 309 to rotate, so that the rotating shaft 309 drives the arc-shaped plate 308 to rotate, making the arc-shaped plate 308 push the grinding head 307 to deflect, thereby adjusting the angle of the grinding head 307, making it easier for the grinding head 307 to move at the tortuous and diseased positions of the blood vessel. Thus, not only is it more convenient for the grinding head 307 to move, but it is also easier for the grinding head 307 to pass through the blood vessel, enabling the grinding head 307 to be applicable to blood vessels in different states.

[0053] In one embodiment of the present invention, a sealing sleeve 306 is sleeved outside the first bevel gear 304 and the second bevel gear 305. The adjusting rod 303 and the rotating shaft 309 respectively pass through the sealing sleeve 306, so that the adjusting rod 303 and the rotating shaft 309 are respectively rotatably connected to the sealing sleeve 306, and the sealing sleeve 306 is fixedly connected to the driving block 301. The sealing sleeve 306 on the one hand avoids the influence of the blood inside the blood vessel when the first bevel gear 304 and the second bevel gear 305 rotate. On the other hand, it prevents the first bevel gear 304 and the second bevel gear 305 from separating, and at the same time, it also plays a role in supporting and connecting the rotating shaft 309.

[0054] In one embodiment of the present invention, it further includes a bearing bottom plate 101. A control box 102 is fixedly connected to the upper surface of the bearing bottom plate 101. A storage groove 103 is formed on the upper surface of the bearing bottom plate 101 around the control box 102. An operating handle 104 that is disengaged from the control box 102 and electrically connected to the control box 102 is installed inside the storage groove 103. A micro motor is provided inside the operating handle 104, and the output end of the micro motor is fixedly connected to the flexible drive shaft 201.

[0055] The grinding head 307 and the flexible drive shaft 201 can be stored through the storage groove 103. The micro motor is controlled through the operating handle 104 to drive the rotation of the flexible drive shaft 201 and the rotation speed of the flexible drive shaft 201.

[0056] In one embodiment of the present invention, the flexible driving shaft 201 passes through the driving block 301 and is fixedly connected to the grinding head 307. The end of the flexible driving shaft 201 is slidably connected to the push rod 401. The guide wire 202 is slidably inserted inside the flexible driving shaft 201. The end of the guide wire 202 is fixedly connected to the pushing rod 401. The other end of the pushing rod 401 is fixedly connected to the moving rod 402. The surface of the moving rod 402 is slidably sleeved with a mounting rod 403. The mounting rod 403 is rotatably connected to the grinding head 307. The mounting rod 403 The surface of the mounting rod 403 is provided with sliding grooves 404 in an annular array, and the interior of the mounting rod 403 is provided with a cross sliding plate 604 which is slidably connected to the sliding grooves 404. One side of the cross sliding plate 604 is fixedly connected to the moving rod 402. The four corners of the circumference of the cross sliding plate 604 are rotatably connected to flip plates 406, and the other end of the flip plate 406 is rotatably connected to an elastic filter screen 407. The elastic filter screen 407 is slidably sleeved on the circumference of the mounting rod 403, and the circumference of the other end of the mounting rod 403 is fixedly connected to a limiting block 408.

[0057] By setting the end of the flexible driving shaft 201 to slide with the pushing rod 401, the pushing rod 401 slides on the flexible driving shaft 201 through the sliding groove, so that the pushing rod 401 cannot be separated from the flexible driving shaft 201 when sliding, thereby preventing the pushing rod 401 from being separated from the flexible driving shaft 201. By setting the sliding groove 404, the cross sliding plate 604 is more stable when moving.

[0058] When the grinding head 307 is in contact with the calcified tissue, the guide wire 202 is pushed, so that one end of the guide wire pushes the push rod 401 to slide inside the flexible driving shaft 201, thereby pushing the moving rod 402 to move, so that the moving rod 402 slides inside the mounting rod 403, thereby pushing the cross sliding plate 604 to slide synchronously, and at the same time, when the cross sliding plate 604 slides, it synchronously drives the flip plate 406 to move, pushing the elastic filter 407 to slide on the surface of the mounting rod 403; when the elastic filter 407 is in contact with the limit block 408, the elastic filter 407 is continuously pushed by the flip plate 406 to open the elastic filter 407, so that the elastic filter 407 is in contact with the inner wall of the blood vessel, so that when the grinding head 307 is grinding the calcified tissue, the elastic filter 407 intercepts the grinding debris, reducing the probability of the grinding debris clogging the capillaries, wherein the elastic filter 407 is opened in an umbrella shape.

[0059] When the grinding head 307 is in contact with the calcified tissue, the guide wire 202 is pushed, so that one end of the guide wire pushes the push rod 401 to slide inside the flexible driving shaft 201, thereby pushing the moving rod 402 to move, so that the moving rod 402 slides inside the mounting rod 403, thereby pushing the cross sliding plate 604 to slide synchronously, and through the setting of the operating handle 104, the micro motor is started, so that the output end drives the flexible driving shaft 201 to rotate, and the flexible driving shaft 201 drives the driving block 301 to rotate synchronously, and the driving block 301 drives the arc plate 308 to rotate, so that the grinding head 307 rotates inside the blood vessel, and the setting of the fixed connection between the micro-adjusting motor 302 and the driving block 301 prevents the driving block 301 from driving the micro-adjusting motor 302 to rotate. Thereby, the micro-adjusting motor 302 is prevented from rotating along with the driving block 301 and causing movement obstruction to the rotation of the grinding head 307, so that the grinding head 307 can remove the calcified tissue. At the same time, when the cross sliding plate 604 slides, the flip plate 406 is synchronously driven to move, pushing the elastic filter 407 to slide on the surface of the mounting rod 403; when the elastic filter 407 is in contact with the limit block 408, the elastic filter 407 is continuously pushed by the flip plate 406 to open up, so that the elastic filter 407 is in contact with the inner wall of the blood vessel, so that when the grinding head 307 is grinding the calcified tissue, the elastic filter 407 intercepts the grinding debris, thereby reducing the probability of the grinding debris clogging the capillaries, wherein the elastic filter 407 is opened in an umbrella shape.

[0060] In one embodiment of the present invention, a return spring 405 is fixedly connected to the other side of the cross sliding plate 604 .

[0061] When the cross sliding plate 604 moves toward the elastic filter 407 , the return spring 405 is forced to contract. When the elastic filter 407 needs to be returned, the elastic force of the return spring 405 helps to return the elastic filter 407 .

[0062] In one embodiment of the present invention, a through slot 701 is provided on the movable rod 402, an elastic column 702 is arranged inside the through slot 701, the middle part of the elastic column 702 is fixedly connected to the through slot 701, both ends of the elastic column 702 are fixedly connected with a clamping block 703 which is slidably connected to the through slot 701, and an arc-shaped groove which is adapted to the clamping block 703 is provided inside the mounting rod 403.

[0063] Push the guide wire 202 to make the moving rod 402 slide within the mounting rod 403 until the clamping block 703 is clamped with the arc-shaped groove, so that the mounting rod 403 and the moving rod 402 are connected to each other, thereby limiting the moving rod 402 and preventing the cross sliding plate 604 from resetting under the elastic force of the return spring 405, supporting the elastic filter net 407, and preventing the elastic filter net 407 from automatically resetting, which affects the use of the elastic filter net 407. When resetting is required, pull the guide wire 202 to compress the elastic column 702, so that the clamping block 703 disengages from the arc-shaped groove inside the mounting rod 403, enabling the elastic filter net 407 to reset, and avoiding the influence of clamping on the reset of the elastic filter net 407.

[0064] In an embodiment of the present invention, two arc-shaped protection plates 601 are symmetrically arranged on the circumferential side of one end of the mounting rod 403 close to the moving rod 402. Tightening springs 602 are fixedly connected between the opposite surfaces on both sides of the two arc-shaped protection plates 601. The opposite surfaces of one end of the two arc-shaped protection plates 601 close to the cross sliding plate 604 are rotatably connected with push plates 603. The other ends of the push plates 603 are fixedly connected to the cross sliding plate 604. Activity grooves 8 corresponding to the push plates 603 are formed on both sides of the surface of the mounting rod 403, and the two push plates 603 are respectively slidably connected in the corresponding activity grooves 8.

[0065] Both of the two arc-shaped protection plates 601 correspond to the grinding head 307. Through the arrangement of the tightening springs 602, the two arc-shaped protection plates 601 can be opened at a certain angle on the surface of the grinding head 307, making the two arc-shaped protection plates 601 more adapted to the grinding head 307. Through the arrangement of the activity grooves 8, the push plates 603 slide more stably on the surface of the moving mounting rod 403.

[0066] When the grinding head 307 is in contact with the calcified tissue, push the guide wire 202, and make one end of it push the push rod 401 to slide inside the flexible drive shaft 201, thereby pushing the moving rod 402 to move, making the moving rod 402 slide inside the mounting rod 403, thereby pushing the cross sliding plate 604 to slide synchronously, driving the push plate 603 to move, and thus making the arc-shaped protection plate 601 disengage from the grinding head 307.

[0067] After the calcified tissue removal by the grinding head 307 is completed, the guide wire 202 is pulled, causing the push rod 401 to drive the moving rod 402 to reset, thereby pulling the cross slide plate 604 to reset. As a result, the flip plate 406 slides on the surface of the mounting rod 403, causing the elastic filter net 407 to reset, preventing the debris filtered by the elastic filter net 407 from re-entering the blood vessel and affecting the inside of the blood vessel. By continuously pulling the guide wire 202, when the cross slide plate 604 moves, it synchronously drives the push plate 603 to slide on the surface of the mounting rod 403, so that the two arc-shaped protective plates 601 are sleeved on the surface of the grinding head 307. The arc-shaped protective plates 601 block the grinding protrusions on the surface of the grinding head 307, preventing the blood vessel from being damaged due to the blood vessel contraction fitting with the grinding protrusions. Moreover, due to the elastic force of the pressing spring 602, the two arc-shaped protective plates 601 fit more tightly with the grinding head 307.

[0068] After the calcified tissue removal by the grinding head 307 is completed, the guide wire 202 is pulled, causing the push rod 401 to drive the moving rod 402 to reset, thereby pulling the cross slide plate 604 to reset. As a result, the flip plate 406 slides on the surface of the mounting rod 403, causing the elastic filter net 407 to reset. By continuously pulling the guide wire 202, the elastic filter net 407 and the cross slide plate 604 slide inside the sliding groove 404, so that the elastic filter net 407 moves to one side of the arc-shaped protective plate 601, making the elastic filter net 407 fit with one side of the two arc-shaped protective plates 601, preventing the debris filtered by the elastic filter net 407 from re-entering the blood vessel and affecting the inside of the blood vessel. At the same time, when the cross slide plate 604 moves, it synchronously drives the push plate 603 to slide on the surface of the mounting rod 403, so that the two arc-shaped protective plates 601 are sleeved on the surface of the grinding head 307. The arc-shaped protective plates 601 block the grinding protrusions on the surface of the grinding head 307, preventing the blood vessel from being damaged due to the blood vessel contraction fitting with the grinding protrusions. Moreover, due to the elastic force of the pressing spring 602, the two arc-shaped protective plates 601 fit more tightly with the grinding head 307. Thus, not only is it prevented that the grinding debris detaches from the elastic filter net 407 and affects the blood vessel again, but also the elastic filter net 407 is separated from the inner wall of the blood vessel, preventing the elastic filter net 407 from damaging the inner wall of the blood vessel.

[0069] In one embodiment of the present invention, four avoidance grooves 9 are formed on the opposite surfaces of the two arc-shaped protective plates 601 near the end close to the cross slide plate 604, and the four avoidance grooves 9 correspond to the cross slide plate 604 respectively.

[0070] Through the arrangement of the avoidance grooves 9, the cross slide plate 604 can be slidably inserted into the opposite sides of the two arc-shaped protective plates 601, so that the elastic filter net 407 can be sleeved on the surface of the arc-shaped protective plate 601, preventing the grinding debris from affecting the blood vessel.

[0071] In an embodiment of the present invention, a fixed rod 501 is fixedly connected to one end of the mounting rod 403 away from the moving rod 402, and an endoscope camera 502 electrically connected to the control box 102 is fixedly connected to the other end of the fixed rod 501.

[0072] Through the arrangement of the fixed rod 501, the endoscope camera 502 can move along with the mounting rod 403, so that the endoscope camera 502 can observe the condition inside the blood vessel. A display screen is provided on the surface of the control box 102. When the flexible drive shaft 201 and the grinding head 307 move inside the blood vessel, through the arrangement of the endoscope camera 502, the images of the tortuosity and lesion positions inside the blood vessel are transmitted to the display screen, which facilitates the medical staff to observe the condition inside the blood vessel, enables the medical staff to adjust the angle of the grinding head 307, makes it easier for the grinding head 307 to pass through the blood vessel, and enables the grinding head 307 to be applicable to blood vessels in different states.

[0073] In an embodiment of the present invention, pressure sensors 503 are fixedly connected to the periphery of the grinding head 307 in an annular array, and the pressure sensors 503 are electrically connected to the control box 102.

[0074] When the grinding head 307 clears calcified tissue, through the arrangement of the pressure sensors 503, the pressure of the grinding head 307 in contact with the inner wall of the blood vessel is monitored. At the same time, through the arrangement of the control box 102, the monitored pressure data is transmitted to the display screen, enabling the medical staff to adjust the rotation speed of the grinding head 307 according to the data monitored by the pressure sensors 503, thereby reducing the damage to the blood vessel caused by the grinding head 307 during use.

[0075] In the description of this specification, the descriptions referring to terms such as "an embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do 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.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A device for removing vascular calcified tissue, characterized in that: include: A flexible driving shaft (201), one end of the flexible driving shaft (201) is fixedly connected to a driving block (301), a micro-adjusting motor (302) is fixedly connected inside the driving block (301), an output end of the micro-adjusting motor (302) is fixedly connected to an adjusting rod (303), the other end of the adjusting rod (303) is fixedly connected to a first bevel gear (304), a second bevel gear (305) is meshed on a surface of the first bevel gear (304), and a rotating shaft (309) is fixedly connected to the second bevel gear (305); A grinding head (307), wherein an end surface of the grinding head (307) close to one end of the driving block (301) is fixedly connected to an arc-shaped plate (308), and a middle side surface of the arc-shaped plate (308) is fixedly connected to a rotating shaft (309).

2. The device for removing vascular calcified tissue according to claim 1, characterized in that: The first bevel gear (304) and the second bevel gear (305) are sleeved with sealing sleeves (306) on their outer sides, and the adjusting rod (303) and the rotating shaft (309) respectively pass through the sealing sleeves (306), so that the adjusting rod (303) and the rotating shaft (309) are rotatably connected to the sealing sleeves (306), and the sealing sleeve (306) is fixedly connected to the driving block (301).

3. The device for removing vascular calcified tissue according to claim 2, characterized in that: The invention also comprises a bearing base plate (101), the upper surface of which is fixedly connected to a control box (102), a storage groove (103) being provided on the upper surface of the bearing base plate (101) and located on the peripheral side of the control box (102), an operating handle (104) being detached from the control box (102) and electrically connected to the control box (102) being installed inside the storage groove (103), a micro motor being arranged inside the operating handle (104), and an output end of the micro motor being fixedly connected to the flexible driving shaft (201).

4. The device for removing vascular calcified tissue according to claim 3, characterized in that: The flexible driving shaft (201) passes through the driving block (301) and is fixedly connected to the grinding head (307), and the flexible driving shaft (201) is rotatably connected to the grinding head (307). The end of the flexible driving shaft (201) is slidably connected to a pushing rod (401). A guide wire (202) is slidably inserted inside the flexible driving shaft (201). The end of the guide wire (202) is fixedly connected to the pushing rod (401). The other end of the pushing rod (401) is fixedly connected to a moving rod (402). The surface of the moving rod (402) is slidably sleeved with a mounting rod (403). The mounting rod (403) is rotatably connected to the grinding head (307). The surface of the mounting rod (403) is provided with sliding grooves (404) in an annular array, and a cross sliding plate (604) slidably connected to the sliding grooves (404) is arranged inside the mounting rod (403), and one side of the cross sliding plate (604) is fixedly connected to the moving rod (402), and the four corners of the circumference of the cross sliding plate (604) are rotatably connected to the flip plate (406), and the other end of the flip plate (406) is rotatably connected to the elastic filter net (407), and the elastic filter net (407) is slidably sleeved on the circumference of the mounting rod (403), and the circumference of the other end of the mounting rod (403) is fixedly connected to the limiting block (408).

5. The device for removing vascular calcified tissue according to claim 4, characterized in that: A return spring (405) is fixedly connected to the other side of the cross sliding plate (604).

6. The device for removing vascular calcified tissue according to claim 5, characterized in that: A through slot (701) is provided on the moving rod (402), an elastic column (702) is arranged inside the through slot (701), the middle part of the elastic column (702) is fixedly connected to the through slot (701), both ends of the elastic column (702) are fixedly connected to a clamping block (703) which is slidably connected to the through slot (701), and an arc-shaped groove which is adapted to the clamping block (703) is provided inside the mounting rod (403).

7. The device for removing vascular calcified tissue according to claim 6, characterized in that: Two arc-shaped protective plates (601) are symmetrically arranged on the circumferential side of one end of the installation rod (403) close to the moving rod (402), and a clamping spring (602) is fixedly connected between the opposite surfaces on both sides of the two arc-shaped protective plates (601). The opposite surfaces of one end of the two arc-shaped protective plates (601) close to the cross sliding plate (604) are rotatably connected with a push plate (603), and the other end of the push plate (603) is fixedly connected to the cross sliding plate (604). Both sides of the surface of the installation rod (403) are provided with movable grooves (8) corresponding to the push plates (603), and the two push plates (603) are respectively slidably connected in the corresponding movable grooves (8).

8. The device for removing vascular calcified tissue according to claim 7, characterized in that: Four avoidance grooves (9) are provided on the opposite surfaces of the two arc-shaped protection plates (601) close to one end of the cross sliding plate (604), and the four avoidance grooves (9) correspond to the cross sliding plates (604) respectively.

9. The device for removing vascular calcified tissue according to claim 8, characterized in that: One end of the mounting rod (403) away from the moving rod (402) is fixedly connected to a fixing rod (501), and the other end of the fixing rod (501) is fixedly connected to an endoscope camera (502) electrically connected to the control box (102).

10. The device for removing vascular calcified tissue according to claim 2, characterized in that: Pressure sensors (503) are fixedly connected to the circumference of the grinding head (307) in a ring-shaped array, and the pressure sensors (503) are electrically connected to the control box (102).

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