Great saphenous vein reviser and revising method thereof

Abstract

The invention relates to the technical field of vein revision, and particularly discloses a great saphenous vein revision device and a revision method thereof.The great saphenous vein revision device comprises a pressing bottom plate and further comprises a torsion reset mechanism, a pressure sensor and a control system, the torsion reset mechanism is used for conducting automatic reset after a worker revises veins of a patient, and the torsion reset mechanism is located on the pressing bottom plate; the connection pressing mechanism is used for revising the veins of the patient, and the connection pressing mechanism is connected to the torsion reset mechanism; the revising mechanism is used for revising and suturing the vein of the patient, and the revising mechanism is located on the connecting and pressing mechanism; according to the torsion reset mechanism, the characteristics of the torsion spring are ingeniously utilized, after vein revision operation is completed, the pressing plate can be automatically reset to the initial position, through the design, the time and energy of manual reset of medical workers are greatly saved, the efficiency of surgical operation is improved, the medical workers can concentrate on the surgery, and the working efficiency of the medical workers is improved. And unnecessary operation steps are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of vein revision, and in particular relates to a great saphenous vein revision device and a revision method thereof. Background Art

[0002] In cardiac surgery, especially for bypass surgery for patients with coronary heart disease, the great saphenous vein is often used as a graft. However, clinical practice has found that some patients with coronary heart disease have severe varicose veins on both sides of the great saphenous vein, which leads to a shortage of available graft resources and delays in surgery. Varicose veins of the great saphenous vein change the morphology and structure of the blood vessels, making them unable to be directly used as suitable grafts for bypass surgery. Doctors have to wait for other suitable vascular resources or look for alternative treatment options, which undoubtedly increases the treatment risk and uncertainty for patients.

[0003] Cardiac surgery patients with coronary heart disease often face treatment delays due to the lack of access to graft vessels due to severe bilateral saphenous vein varicose veins. Alternatively, the oversized lumen of the saphenous vein grafts results in slow blood flow, making thrombosis more likely to form, leading to postoperative myocardial infarction. This can seriously impact the health and safety of these patients.

[0004] During traditional great saphenous vein surgery, the revision and suturing of the vein mainly rely on manual operation by medical staff. Medical staff need to rely on rich experience and superb skills to use various surgical instruments to accurately press, revise and suture the vein. However, this manual operation method has many disadvantages.

[0005] On the one hand, the force of manual vein compression is difficult to control accurately. During the operation, appropriate pressing force is crucial to the effect of vein revision. If the pressing force is too great, it may cause excessive damage to the vein or even cause vein rupture, increasing the risk of surgery and the patient's pain; if the pressing force is too small, the vein cannot be effectively fixed, affecting the accuracy of the revision operation, which may lead to incomplete vein revision, affecting the surgical effect and the patient's recovery. Moreover, long-term manual compression will cause fatigue of the medical staff's hand muscles, making it difficult to maintain a stable pressing force, further affecting the quality of the operation. Therefore, a great saphenous vein revision device and a revision method thereof are proposed. Summary of the Invention

[0006] The object of the present invention is to provide a great saphenous vein revision device and a revision method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A great saphenous vein revision device includes a pressing base plate and:

[0009] A torque reset mechanism, used for automatically resetting the patient's vein after the staff has revised the patient's vein, and the torque reset mechanism is located on the pressing base plate;

[0010] a connecting and pressing mechanism for revising the patient's vein, wherein the connecting and pressing mechanism is connected to the torque resetting mechanism;

[0011] The revision mechanism is used for revising and suturing the patient's vein, and the revision mechanism is located on the connecting and pressing mechanism.

[0012] Preferably, the torque reset mechanism includes fixed plates installed on both sides of the top of the pressing base plate, a rotating shaft is rotatably connected to the fixed plate, one end of the rotating shaft is fixedly connected to a fixed disk, one side of the fixed disk is connected to a torsion spring, and a protective box is fixedly installed on the outer wall of the fixed plate.

[0013] Preferably, the fixed disk and the torsion spring are both located inside the protective box, one end of the torsion spring away from the fixed disk is connected to the outside of the fixed plate, and the torsion spring is sleeved on the outer wall of the rotating shaft.

[0014] Preferably, the connecting pressing mechanism includes a pressing plate, connecting rods are connected to both sides of the pressing plate, an installation cavity is provided inside the connecting rod, a telescopic spring is connected inside the installation cavity, one end of the telescopic spring is connected to a plug-in magnetic plate, and the plug-in magnetic plate slides away from one end of the telescopic spring and extends to the outside of the connecting rod, a limiting slot is provided on the side of the rotating shaft away from the fixed disk, a socket is provided inside the limiting slot, a mounting magnetic block is connected inside the socket, the outer wall of the plug-in magnetic plate is connected to a sliding pull plate, and the sliding pull plate extends to the outside of the connecting rod away from one end of the plug-in magnetic plate, and the outer wall of the connecting rod is provided with a square slot.

[0015] Preferably, one end of the sliding plate away from the plug-in magnetic plate extends to the outside of the connecting rod through the square sliding groove, and the outer side wall of the sliding plate and the inner side wall of the square sliding groove are slidingly fitted.

[0016] Preferably, the outer side wall of the connecting rod and the inner side wall of the limiting slide groove are slidingly fitted, the plug-in magnetic plate and the socket are correspondingly slidingly plugged, and the plug-in magnetic plate and the mounting magnetic block are correspondingly attracted to each other with opposite poles.

[0017] Preferably, the revision mechanism includes a connecting magnetic plate and a revision needle, the outer wall of the connecting magnetic plate is connected to a connecting handle, a plurality of sliding cavities are opened on the side of the connecting magnetic plate away from the connecting handle, the interior of the sliding cavity is connected to an extrusion spring, one end of the extrusion spring is connected to an electromagnetic plate, the electromagnetic plate is located on one side of the extrusion spring and is connected to a connecting plate, the end of the connecting plate away from the electromagnetic plate is connected to a sliding block, the inner wall of the sliding cavity is provided with an electromagnetic switch, and the outer wall of the pressing plate is installed with a mounting magnetic plate.

[0018] Preferably, the connecting magnetic plate and the mounting magnetic plate are arranged with opposite poles attracting each other, and both the mounting magnetic plate and the pressing plate are provided with plug holes, which are adapted to the size of the revision pin, and the revision pin is made of metal.

[0019] Preferably, the electromagnetic switch is used to open the electromagnetic plate, the outer wall of the electromagnetic plate and the inner wall of the sliding cavity are slidingly fitted, the outer wall of the connecting plate does not contact the inner wall of the sliding cavity, one side of the sliding block and the inner wall of the sliding cavity are slidingly fitted, and the sliding block and the electromagnetic switch are correspondingly slidingly extruded.

[0020] A method for revising a great saphenous vein revision device, comprising:

[0021] Step 1: When performing bypass surgery on a patient, the medical staff first removes the donor's great saphenous vein, then places the great saphenous vein revision device on the patient's site where vein revision is required, so that the pressing base contacts the removed vein, providing a stable support base for the entire revision operation. Then, the medical staff applies downward pressure on the pressing plate through external force. The connecting rods on both sides of the pressing plate are fixedly connected to the rotating shaft, and the rotation of the rotating shaft can make the pressing plate drive the revision needle downward, so that the revision needle can be inserted into the patient's vein for suturing;

[0022] Step 2: After the revision needle is inserted into the patient's vein for suture, the pressing plate is no longer pressed. At this time, the pressing plate can return to its initial position according to the elastic recovery effect of the rotating shaft and the torsion spring. Since the force of attraction between the opposite poles of the electromagnetic plate and the revision needle is smaller than the friction force of suture at the place where the revision needle is inserted into the patient's vein, under the action of the suture friction force, the revision needle overcomes the attraction between the opposite poles of the electromagnetic plate and the revision needle and detaches from the electromagnetic plate;

[0023] Step 3: When installing the revision pin and the connecting magnetic plate, insert the revision pin into the sliding cavity and squeeze the electromagnetic plate to separate the electromagnetic plate from the electromagnetic switch. At this time, the electromagnetic plate and the revision pin will attract each other with opposite poles. Then insert the installed revision pin into the socket hole. According to the attraction between the connecting magnetic plate and the installation magnetic plate, the revision pin can be installed on the pressing plate.

[0024] Step 4: When installing the pressing plate and the rotating shaft, slide the connecting rods on both sides of the pressing plate from top to bottom into the inside of the limiting slide groove. At this time, the end of the plug-in magnetic plate and the end of the connecting rod are in the same horizontal plane. When the plug-in magnetic plate corresponds to the socket, the plug-in magnetic plate can be inserted into the inside of the socket according to the effect of attraction between the opposite poles of the plug-in magnetic plate and the installation magnetic block, so that the connecting rod and the rotating shaft can be installed.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The torsion reset mechanism cleverly utilizes the characteristics of the torsion spring. After the vein revision operation is completed, it can automatically reset the pressing plate to its initial position. This design greatly saves medical staff the time and energy of manual resetting, improves the efficiency of surgical operations, allows medical staff to focus more on the operation itself, and reduces unnecessary operating steps. The device applies the principle of suturing to reduce the lumen, and uses multiple closely spaced revision nails instead of needles and threads to simplify the operation, improve surgical efficiency, and facilitate the fixation of the course of the graft during surgery. At the same time, each revision nail is independent of each other, so that the great saphenous vein is not rigid when it is full. The revision device needs to be used together with a gasket to reduce the pressure of the revision nail on the vascular adventitia. The great saphenous vein will be removed first in bypass surgery, and the varicose part will be revised to reduce the lumen diameter to an appropriate size.

[0027] The telescopic spring and plug-in magnetic plate arranged inside the connecting rod, as well as the sliding pull plate connected to the outer wall of the plug-in magnetic plate, allow medical staff to control the insertion and removal of the plug-in magnetic plate by pulling the sliding pull plate, thereby fixing and releasing the pressing plate. This operation method is simple and easy to understand, and is convenient for staff to disassemble and install the pressing plate and the pressing base plate, making the two separate components. When the pressing plate or the pressing base plate is damaged, it is convenient for staff to replace the two separately, thereby improving the flexibility and operability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the present invention;

[0029] Figure 2 It is a top view of the structure of the present invention;

[0030] Figure 3 For the present invention Figure 2 The enlarged structural diagram at point A;

[0031] Figure 4 It is a side sectional structural diagram of the rotating shaft and the connecting rod of the present invention;

[0032] Figure 5 This is a structural diagram of the present invention in which the magnetic plate is connected and separated from the pressing plate;

[0033] Figure 6 This is a side sectional structural diagram of the connected magnetic plates of the present invention.

[0034] In the figure: 1. Pressing base plate; 2. Fixed plate; 201. Rotating shaft; 202. Fixed disk; 203. Torsion spring; 204. Protective box; 3. Pressing plate; 301. Connecting rod; 302. Mounting cavity; 303. Telescopic spring; 304. Plug-in magnetic plate; 305. Mounting magnetic block; 306. Sliding pull plate; 307. Square slide groove; 4. Connecting magnetic plate; 401. Connecting handle; 402. Revision needle; 403. Sliding cavity; 404. Extrusion spring; 405. Electromagnetic plate; 406. Connecting plate; 407. Sliding block; 408. Electromagnetic switch; 409. Mounting magnetic plate. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1-6 As shown, a great saphenous vein revision device includes a pressing base plate 1 and a torsion reset mechanism for automatically resetting the patient's vein after the staff has revised the patient's vein. The torsion reset mechanism is located on the pressing base plate 1 and includes a fixing plate 2 installed on both sides of the top of the pressing base plate 1. A rotating shaft 201 is rotatably connected to the fixing plate 2, one end of the rotating shaft 201 is fixedly connected to a fixing plate 202, one side of the fixing plate 202 is connected to a torsion spring 203, and a protective box 204 is fixedly installed on the outer wall of the fixing plate 2.

[0037] The present invention further specifically details that the fixed disk 202 and the torsion spring 203 are both located inside the protective box 204, and the end of the torsion spring 203 away from the fixed disk 202 is connected to the outside of the fixed plate 2, and the torsion spring 203 is sleeved on the outer wall of the rotating shaft 201;

[0038] like Figure 1-6As shown, the connecting and pressing mechanism is used to revise the patient's vein. The connecting and pressing mechanism is connected to the torsion reset mechanism. The connecting and pressing mechanism includes a pressing plate 3. Both sides of the pressing plate 3 are connected to connecting rods 301. The interior of the connecting rod 301 is provided with a mounting cavity 302. The interior of the mounting cavity 302 is connected with a telescopic spring 303. One end of the telescopic spring 303 is connected to a plug-in magnetic plate 304, and the plug-in magnetic plate 304 slides away from one end of the telescopic spring 303 and extends to the outside of the connecting rod 301. A limiting slot is provided on the side of the movable shaft 201 away from the fixed disk 202, and a socket is provided inside the limiting slot. A mounting magnet 305 is connected to the inside of the socket. A sliding plate 306 is connected to the outer wall of the plug-in magnetic plate 304, and the sliding plate 306 extends to the outside of the connecting rod 301 at one end away from the plug-in magnetic plate 304. A square slot 307 is provided on the outer wall of the connecting rod 301. It should be noted that: in the initial state, one end of the plug-in magnetic plate 304 and the end of the connecting rod 301 are in the same horizontal plane;

[0039] The present invention is further specifically described in detail. One end of the sliding pull plate 306 away from the plug-in magnetic plate 304 extends to the outside of the connecting rod 301 through the square slide groove 307, and the outer wall of the sliding pull plate 306 and the inner wall of the square slide groove 307 are slidingly fitted. The outer wall of the connecting rod 301 and the inner wall of the limiting slide groove are slidingly fitted. The plug-in magnetic plate 304 and the socket are correspondingly slidably plugged. The plug-in magnetic plate 304 and the mounting magnetic block 305 are correspondingly arranged with opposite poles attracting each other. It should be noted that the force of the opposite poles attracting each other between the plug-in magnetic plate 304 and the mounting magnetic block 305 is greater than the elastic expansion and contraction force of the telescopic spring 303.

[0040] like Figure 1-6 As shown, the revision mechanism is used to revise and suture the patient's vein. The revision mechanism is located on the connecting and pressing mechanism. The revision mechanism includes a connecting magnetic plate 4 and a revision needle 402. The outer wall of the connecting magnetic plate 4 is connected to a connecting handle 401. A plurality of sliding cavities 403 are provided on the side of the connecting magnetic plate 4 away from the connecting handle 401. The interior of the sliding cavity 403 is connected to an extrusion spring 404. One end of the extrusion spring 404 is connected to an electromagnetic plate 405. The electromagnetic plate 405 is located on one side of the extrusion spring 404 and is connected to a connecting plate 406. The end of the connecting plate 406 away from the electromagnetic plate 405 is connected to a sliding block 407. The inner wall of the sliding cavity 403 is provided with an electromagnetic switch 408. The outer wall of the pressing plate 3 is installed with a mounting magnetic plate 409.

[0041] The present invention is further specifically described in detail. The connecting magnetic plate 4 and the mounting magnetic plate 409 are arranged to attract each other with opposite poles. The mounting magnetic plate 409 and the pressing plate 3 are both provided with a plug hole. The plug hole is adapted to the size of the revision pin 402. The revision pin 402 is made of metal. It should be noted that the electromagnetic plate 405 and the revision pin 402 are arranged to attract each other with opposite poles. The electromagnetic switch 408 is used to open the electromagnetic plate 405. The outer wall of the electromagnetic plate 405 and the inner wall of the sliding cavity 403 are arranged to slide in contact. The outer wall of the connecting plate 406 does not contact the inner wall of the sliding cavity 403. One side of the sliding block 407 is in contact with the sliding cavity 4 The inner wall of 03 is configured to slide and fit, and the sliding block 407 and the electromagnetic switch 408 are configured to slide and squeeze correspondingly. It should be noted that: in the initial state, the electromagnetic switch 408 and the sliding block 407 are configured to slide and fit. When the electromagnetic switch 408 and the sliding block 407 are separated, the electromagnetic switch 408 is turned on. When the electromagnetic switch 408 and the sliding block 407 are in contact again, the electromagnetic switch 408 is turned off. The electromagnetic switch 408 can be closed each time it is squeezed, and the force of attraction between the opposite poles of the electromagnetic plate 405 and the revision needle 402 is less than the force of friction caused by the revision needle 402 inserted into the patient's vein for suturing.

[0042] As can be seen from the above, the torsion spring 203 of the torsion reset mechanism is in a natural state and has not been deformed;

[0043] The pressing plate 3 connected to the pressing mechanism is in the initial position, one end of the plug-in magnetic plate 304 on the connecting rod 301 is in the same horizontal plane as the end of the connecting rod 301, and the plug-in magnetic plate 304 maintains a relatively stable position under the action of the telescopic spring 303;

[0044] The connection magnetic plate 4 of the revision mechanism is connected to the mounting magnetic plate 409 on the pressing plate 3 by attraction of opposite poles. The electromagnetic plate 405 is in the closed state. The revision pin 402 is stably adsorbed on the electromagnetic plate 405 under the action of the attraction of opposite poles between the electromagnetic plate 405 and the revision pin 402. At the same time, the sliding block 407 and the electromagnetic switch 408 are in a sliding engagement state, and the electromagnetic switch 408 is in the closed state.

[0045] When performing bypass surgery on a patient, the medical staff first removes the great saphenous vein of the donor, and then places the great saphenous vein revision device on the part of the patient where the vein needs to be revised, so that the pressing base plate 1 contacts the removed vein, providing a stable support base for the entire revision operation. Then, the medical staff applies downward pressure to the pressing plate 3 through external force, and the connecting rods 301 on both sides of the pressing plate 3 are fixedly connected to the rotating shaft 201. The rotation of the rotating shaft 201 can make the pressing plate 3 drive the revision needle 402 to move downward, so that the revision needle 402 can be inserted During the suturing operation on the patient's vein, after the revision needle 402 is inserted into the patient's vein skin for suturing, the pressing plate 3 is no longer pressed. At this time, the pressing plate 3 can return to its initial position according to the elastic restoring effect of the rotating shaft 201 and the torsion spring 203. Since the force of attraction between the opposite poles of the electromagnetic plate 405 and the revision needle 402 is less than the force of friction caused by the revision needle 402 inserted into the patient's vein for suturing, under the action of the suturing friction, the revision needle 402 overcomes the attraction between the opposite poles of the electromagnetic plate 405 and the revision needle 402 and detaches from the electromagnetic plate 405.

[0046] When installing the revision needle 402 and the connecting magnetic plate 4, the revision needle 402 is inserted into the interior of the sliding cavity 403, and the electromagnetic plate 405 is squeezed to separate the electromagnetic plate 405 from the electromagnetic switch 408. At this time, the electromagnetic plate 405 can attract the revision needle 402 with opposite poles. It should be noted that the weight of the revision needle 402 is greater than the elastic expansion and contraction force of the squeezing spring 404, which can accordingly make the revision needle 402 stably attract the electromagnetic plate 405 with opposite poles. Then, the revision needle 402 after installation is inserted into the plug hole, and according to the effect of the opposite poles attraction between the connecting magnetic plate 4 and the installation magnetic plate 409, the revision needle 402 can be installed on the pressing plate 3.

[0047] When installing the pressing plate 3 and the rotating shaft 201, the connecting rods 301 on both sides of the pressing plate 3 are slid from top to bottom and inserted into the interior of the limiting slide groove. At this time, the ends of the plug-in magnetic plate 304 and the ends of the connecting rods 301 are at the same horizontal plane. When the plug-in magnetic plate 304 corresponds to the socket, the plug-in magnetic plate 304 and the installation magnetic block 305 have opposite poles that attract each other, so that the plug-in magnetic plate 304 can be inserted into the interior of the socket, thereby installing the connecting rods 301 and the rotating shaft 201, and realizing the installation of the pressing plate 3 and the rotating shaft 201.

[0048] It should be noted that the electromagnetic switch 408 opens the electromagnetic plate 405. This is a prior art technique and its working principle will not be described in detail. The revision device needs to be used together with a gasket to reduce the pressure of the revision nail 402 on the adventitia of the blood vessel. During the bypass surgery, the great saphenous vein is first removed and the varicose part is revised to reduce the diameter of the lumen to an appropriate size.

[0049] Through the arrangement of the above technical solution, the torsion reset mechanism cleverly utilizes the characteristics of the torsion spring 203, and can automatically reset the pressing plate 3 to the initial position after the vein revision operation is completed. This design greatly saves the time and energy of medical staff in manual resetting, improves the efficiency of surgical operation, enables medical staff to focus more on the operation itself, and reduces unnecessary operation steps. In addition, the instrument applies the principle of suturing to reduce the lumen, and uses multiple closely spaced revision nails 402 instead of needles and threads to simplify the operation, improve surgical efficiency, and facilitate the fixation of the bridge vessel during the operation. At the same time, each revision nail 402 is independent of each other, so that the great saphenous vein is not stiff when it is full. The revision device needs to be used together with a gasket to reduce the pressure of the revision nail 402 on the vascular adventitia. The great saphenous vein will be removed first in the bypass surgery, and the varicose part will be revised to reduce the lumen diameter to an appropriate size.

[0050] The protective box 204 installed on the outer wall of the fixing plate 2 wraps the fixing plate 202 and the torsion spring 203, effectively preventing external factors from interfering with and damaging the fixing plate 202 and the torsion spring 203, ensuring the normal operation of the torsion reset mechanism and improving the safety and stability of the equipment;

[0051] The telescopic spring 303 and the plug-in magnetic plate 304 provided inside the connecting rod 301, as well as the sliding pull plate 306 connected to the outer wall of the plug-in magnetic plate 304, enable medical personnel to control the insertion and removal of the plug-in magnetic plate 304 by pulling the sliding pull plate 306, thereby achieving the fixation and release of the pressing plate 3. This operation method is simple and easy to understand, and is convenient for the staff to disassemble and install the pressing plate 3 and the pressing base plate 1, making the two separate components. When the pressing plate 3 or the pressing base plate 1 is damaged, it is convenient for the staff to replace the two separately, thereby improving the flexibility and operability of the operation;

[0052] The outer wall of the connecting rod 301 is slidably fitted with the inner wall of the limiting sliding groove, which ensures the stability of the connecting rod 301 during the sliding process and reduces shaking and deviation. At the same time, the plug-in magnetic plate 304 is slidably plugged into the corresponding socket, further enhancing the stability of the connection between the connecting rod 301 and the rotating shaft 201, ensuring the reliability of the entire connection and pressing mechanism during the operation.

[0053] The connecting magnetic plate 4 of the revision mechanism and the mounting magnetic plate 409 on the pressing plate 3 attract each other with opposite poles, so that the connecting magnetic plate 4 can be stably connected to the pressing plate 3. The medical staff operates the connecting magnetic plate 4 through the connecting handle 401 to drive the revision needle 402 to suture the patient's vein. This design can ensure that the revision needle 402 accurately reaches the position where suturing is required, realizes precise revision suturing operation, and improves the quality and effect of the operation.

[0054] The electromagnetic plate 405 and the revision needle 402 are arranged to attract each other with opposite poles. In the initial state, the revision needle 402 is adsorbed on the electromagnetic plate 405, which is convenient for medical staff to operate and carry. When the revision needle 402 is inserted into the patient's vein for suturing, since the force of the opposite poles of attraction between the electromagnetic plate 405 and the revision needle 402 is smaller than the force of suturing friction when the revision needle 402 is inserted into the patient's vein, the revision needle 402 can be smoothly detached from the electromagnetic plate 405 and the suturing operation can be performed. This design not only ensures the stability of the revision needle 402 during operation, but also avoids affecting the suturing effect due to excessive adsorption force, thereby improving the safety of the operation.

[0055] The sliding block 407 and the electromagnetic switch 408 are arranged to slide and squeeze in correspondence. When the sliding block 407 is disengaged from the electromagnetic switch 408, the electromagnetic switch 408 is turned on, and the electromagnetic plate 405 is energized to generate magnetism. When the sliding block 407 is in contact with the electromagnetic switch 408 again, the electromagnetic switch 408 is turned off, and the electromagnetic plate 405 is powered off and loses its magnetism. This intelligent control method can automatically control the magnetic state of the electromagnetic plate 405 according to the progress of the operation, so that the revision needle 402 can be stably adsorbed on the electromagnetic plate 405 when needed, and can be smoothly detached after the suturing is completed, further improving the accuracy and safety of the operation.

[0056] In summary, the great saphenous vein revision device realizes multiple functions such as automatic resetting, precise pressing, convenient operation and safe suturing through the coordinated work of the torque resetting mechanism, the connecting pressing mechanism and the revision mechanism. It has significant beneficial effects, provides strong support for medical surgery, and has broad application prospects.

[0057] A method for revising a great saphenous vein revision device, comprising:

[0058] Step 1: When performing bypass surgery on a patient, the medical staff first removes the great saphenous vein of the donor, then places the great saphenous vein revision device on the patient's site where vein revision is required, so that the pressing base plate 1 contacts the removed vein, providing a stable support base for the entire revision operation. Then, the medical staff applies downward pressure to the pressing plate 3 through external force. The connecting rods 301 on both sides of the pressing plate 3 are fixedly connected to the rotating shaft 201, and the rotation of the rotating shaft 201 can cause the pressing plate 3 to drive the revision needle 402 to move downward, so that the revision needle 402 can be inserted into the patient's vein for suturing;

[0059] Step 2: After the revision needle 402 is inserted into the patient's vein for suture, the pressing plate 3 is no longer pressed. At this time, the pressing plate 3 can return to its initial position based on the elastic recovery effect of the rotating shaft 201 and the torsion spring 203. Because the force of attraction between the electromagnetic plate 405 and the revision needle 402 is smaller than the friction force of suture at the insertion point of the revision needle 402 into the patient's vein, under the action of the suture friction, the revision needle 402 overcomes the attraction between the electromagnetic plate 405 and the revision needle 402 and detaches from the electromagnetic plate 405;

[0060] Step 3: When installing the revision needle 402 and the connecting magnetic plate 4, the revision needle 402 is inserted into the sliding cavity 403, and the electromagnetic plate 405 is squeezed to separate the electromagnetic plate 405 from the electromagnetic switch 408. At this time, the electromagnetic plate 405 and the revision needle 402 are attracted by opposite poles. Then, the revision needle 402 after installation is inserted into the plug hole. According to the attraction between the connecting magnetic plate 4 and the installation magnetic plate 409, the revision needle 402 can be installed on the pressing plate 3.

[0061] Step 4: When installing the pressing plate 3 and the rotating shaft 201, slide the connecting rods 301 on both sides of the pressing plate 3 from top to bottom and insert them into the inner part of the limiting slide groove. At this time, the end of the plug-in magnetic plate 304 and the end of the connecting rod 301 are at the same horizontal plane. When the plug-in magnetic plate 304 corresponds to the socket, due to the attraction between the plug-in magnetic plate 304 and the installation magnetic block 305, the plug-in magnetic plate 304 can be inserted into the inner part of the socket, thereby installing the connecting rod 301 and the rotating shaft 201.

[0062] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A great saphenous vein revision device, characterized in that: The invention comprises a pressing base plate (1), and further comprises: A torque reset mechanism, used for automatically resetting the vein after the staff has corrected the patient's vein, the torque reset mechanism being located on the pressing base plate (1); a connecting and pressing mechanism for revising the patient's vein, wherein the connecting and pressing mechanism is connected to the torque resetting mechanism; The revision mechanism is used for revising and suturing the patient's vein, and the revision mechanism is located on the connecting and pressing mechanism.

2. The great saphenous vein repair device according to claim 1, characterized in that: The torsion reset mechanism comprises fixed plates (2) mounted on both sides of the top of the pressing base plate (1); a rotating shaft (201) is rotatably connected to the fixed plate (2); one end of the rotating shaft (201) is fixedly connected to a fixed disk (202); one side of the fixed disk (202) is connected to a torsion spring (203); and a protective box (204) is fixedly mounted on the outer wall of the fixed plate (2).

3. The great saphenous vein revision device according to claim 2, characterized in that: The fixed disk (202) and the torsion spring (203) are both located inside the protective box (204); one end of the torsion spring (203) away from the fixed disk (202) is connected to the outside of the fixed plate (2); and the torsion spring (203) is sleeved on the outer wall of the rotating shaft (201).

4. The great saphenous vein repair device according to claim 2, characterized in that: The connecting pressing mechanism comprises a pressing plate (3), connecting rods (301) are connected to both sides of the pressing plate (3), a mounting cavity (302) is provided inside the connecting rod (301), a telescopic spring (303) is connected inside the mounting cavity (302), one end of the telescopic spring (303) is connected to a plug-in magnetic plate (304), and the plug-in magnetic plate (304) slides away from one end of the telescopic spring (303) and extends to the outside of the connecting rod (301), A limiting slot is provided on a side of the rotating shaft (201) away from the fixed disk (202), a socket is provided inside the limiting slot, a mounting magnetic block (305) is connected inside the socket, a sliding plate (306) is connected to the outer wall of the plug-in magnetic plate (304), and an end of the sliding plate (306) away from the plug-in magnetic plate (304) extends to the outside of the connecting rod (301), and a square slot (307) is provided on the outer wall of the connecting rod (301).

5. The great saphenous vein repair device according to claim 4, characterized in that: One end of the sliding plate (306) away from the plug-in magnetic plate (304) extends to the outside of the connecting rod (301) through the square sliding groove (307), and the outer wall of the sliding plate (306) and the inner wall of the square sliding groove (307) are slidingly fitted.

6. The great saphenous vein revision device according to claim 4, characterized in that: The outer wall of the connecting rod (301) and the inner wall of the limiting sliding groove are slidingly fitted, the plug-in magnetic plate (304) and the socket are correspondingly slidably plugged, and the plug-in magnetic plate (304) and the mounting magnetic block (305) are correspondingly arranged to attract each other with opposite poles.

7. The great saphenous vein revision device according to claim 4, characterized in that: The revision mechanism includes a connecting magnetic plate (4) and a revision needle (402), the outer wall of the connecting magnetic plate (4) is connected to a connecting handle (401), a plurality of sliding cavities (403) are provided on the side of the connecting magnetic plate (4) away from the connecting handle (401), the interior of the sliding cavity (403) is connected to a compression spring (404), one end of the compression spring (404) is connected to an electromagnetic plate (405), the electromagnetic plate (405) is located on one side of the compression spring (404) and is connected to a connecting plate (406), the end of the connecting plate (406) away from the electromagnetic plate (405) is connected to a sliding block (407), the inner wall of the sliding cavity (403) is provided with an electromagnetic switch (408), and the outer wall of the pressing plate (3) is installed with a mounting magnetic plate (409).

8. The great saphenous vein repair device according to claim 7, characterized in that: The connecting magnetic plate (4) and the mounting magnetic plate (409) are arranged to attract each other with opposite poles, and both the mounting magnetic plate (409) and the pressing plate (3) are provided with plug holes, and the plug holes are adapted to the size of the revision pin (402), and the revision pin (402) is made of metal.

9. The great saphenous vein revision device according to claim 7, characterized in that: The electromagnetic switch (408) is used to open the electromagnetic plate (405), the outer wall of the electromagnetic plate (405) and the inner wall of the sliding cavity (403) are slidingly fitted, the outer wall of the connecting plate (406) does not contact the inner wall of the sliding cavity (403), one side of the sliding block (407) and the inner wall of the sliding cavity (403) are slidingly fitted, and the sliding block (407) and the electromagnetic switch (408) are correspondingly slidingly extruded.

10. A method for revising a great saphenous vein reviser according to any one of claims 1 to 9, characterized in that: include: Step 1: When performing a bypass surgery on a patient, the medical staff first removes the great saphenous vein of the donor, and then places the great saphenous vein revision device on the part of the patient where the vein needs to be revised, so that the pressing base plate (1) contacts the removed vein, providing a stable support base for the entire revision operation. Then, the medical staff applies downward pressure to the pressing plate (3) through external force, and the connecting rods (301) on both sides of the pressing plate (3) are fixedly connected to the rotating shaft (201), and the rotation of the rotating shaft (201) can make the pressing plate (3) drive the revision needle (402) to move downward, so that the revision needle (402) can be inserted into the patient's vein for suturing; Step 2: After the revision needle (402) is inserted into the patient's vein for suturing, the pressing plate (3) is no longer pressed. At this time, the pressing plate (3) can be restored to its initial position according to the elastic restoring effect of the rotating shaft (201) and the torsion spring (203). Since the force of attraction between the opposite poles between the electromagnetic plate (405) and the revision needle (402) is smaller than the force of friction caused by the revision needle (402) being inserted into the patient's vein for suturing, under the action of the friction force of suturing, the revision needle (402) overcomes the force of attraction between the opposite poles between the electromagnetic plate (405) and the revision needle (402) and detaches from the electromagnetic plate (405); Step 3: When installing the revision needle (402) and the connecting magnetic plate (4), insert the revision needle (402) into the interior of the sliding cavity (403), and squeeze the electromagnetic plate (405) to separate the electromagnetic plate (405) and the electromagnetic switch (408). At this time, the electromagnetic plate (405) and the revision needle (402) can be attracted by opposite poles. Then, the revision needle (402) after installation is inserted into the plug hole. According to the effect of the opposite poles of the connecting magnetic plate (4) and the installation magnetic plate (409), the revision needle (402) can be installed on the pressing plate (3); Step 4: When the pressing plate (3) and the rotating shaft (201) are installed, the connecting rods (301) on both sides of the pressing plate (3) are slid from top to bottom and inserted into the interior of the limiting sliding groove. At this time, the end of the plug-in magnetic plate (304) and the end of the connecting rod (301) are in the same horizontal plane. When the plug-in magnetic plate (304) corresponds to the socket, according to the effect of the opposite poles of the plug-in magnetic plate (304) and the installation magnetic block (305) attracting each other, the plug-in magnetic plate (304) can be inserted into the interior of the socket, thereby installing the connecting rod (301) and the rotating shaft (201).

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