Vascular ligation device used in varicosity operation and application

Abstract

The invention belongs to the field of medical instruments, and particularly discloses a minimally invasive blood vessel ligation device used in varicosity operation, which comprises a sheathing canal, a screwing device sleeved in the sheathing canal, an actuator sleeved in the screwing device, a propeller sleeved in the actuator, a puncture outfit arranged at the end of the propeller, a locker arranged at the end of the actuator, and a locking device arranged at the end of the locker. The puncture outfit and the locker are respectively provided with a puncture strip and a metal strip which are distributed oppositely, the head end of the puncture strip is provided with a drag hook, and the two ends of the metal strip are provided with integrally connected metal rings. The puncture strip punctures and passes through the periphery of a blood vessel and then surrounds the blood vessel, the metal strip is connected with the drag hook at the end of the puncture strip in a hooked mode, the metal ring is rotated to enable the metal strip to generate twisting binding force to lock the end of the puncture strip, and the puncture outfit and the locker are both made of metal capable of coexisting with the human body. Compared with the prior art, blood vessel ligation is carried out in a minimally invasive mode, trauma to a patient is small, the operation difficulty and the operation risk are low, and the pressure of a surgeon is relieved.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to a blood vessel ligation device and application for varicose vein surgery.

[0003] Varicose veins are a disease caused by reasons such as blood stasis and weak vein walls, manifested as venous tortuosity and dilation. Common types of varicose veins include varicose veins of the lower extremities, gastric fundus-esophageal varicose veins, varicocele, and superficial varicose veins of the abdominal wall, etc. Currently, varicose veins are mainly treated by surgical ligation, and prevention is mainly emphasized during the asymptomatic period.

[0004] Surgical ligation treatment is mostly used for varicose veins of the lower extremities. It blocks the blood return at the local vein by ligating it, thereby achieving the purpose of treating the disease. Generally, the great saphenous vein of the leg is ligated through a surgical operation to block the blood flow at that place, enabling the blood in the lower extremities to return to the heart through other ways such as deep veins, and avoiding serious situations such as pain caused by local varicose blood vessels or skin ulcers.

[0005] In traditional ligation surgeries, it is necessary to make an incision at the affected part of the patient, expose the blood vessel and then ligate it, which causes great harm to the patient and has a high surgical risk. Based on this, the present invention provides a minimally invasive blood vessel ligation device to reduce the damage to the patient's body on the premise of achieving the same surgical purpose. Summary of the Invention

[0006] Based on the problems that the current blood vessel ligation surgery causes great harm to the patient's body and has a high surgical risk, the present invention provides a blood vessel ligation device and application for varicose vein surgery. The device includes: a sheath tube, a screw tightener is sleeved inside the sheath tube, an actuator is sleeved inside the screw tightener, a pusher is sleeved inside the actuator, and a puncture device is provided at the end of the pusher, and a locking device is provided at the end of the actuator. It is characterized in that: the puncture device and the locking device are respectively provided with puncture strips and metal strips distributed in alignment. The head end of the puncture strip is provided with a hook, and both ends of the metal strip are provided with integrally connected metal rings. The puncture strip pierces through the periphery of the blood vessel and then surrounds the blood vessel, the metal strip hooks the hook at the end of the puncture strip, and by rotating the metal ring, the metal strip generates a twisting binding force to lock the end of the puncture strip. Both the puncture device and the locking device are made of metals that can coexist with the human body.

[0007] Further, the actuator is in a round rod shape, the pusher is in a sleeve shape, a limiting block protruding from the inner surface is provided in the inner cavity of the actuator, and a sliding groove is provided on the outer surface of the pusher. The limiting block is stuck into the sliding groove to limit the relative rotation between the actuator and the pusher.

[0008] Furthermore, the end of the pusher is provided with a rubber ring, and the puncture device is provided with a cylindrical base, which is sleeved on the head end of the pusher. The inner side wall of the base is provided with a groove that fits the rubber ring, and the rubber ring is used to lock the pusher and the locker.

[0009] Furthermore, the actuator end is provided with a slot, and the locker is sleeved on the outer periphery of the head end of the actuator through a metal ring; the metal rings arranged at both ends of the locker, one metal ring is provided with a tooth block on the inner periphery, and the other metal ring is provided with a holding block on the upper surface; the metal ring with a holding block on the inner periphery is sleeved on the slot end of the actuator, and the holding block is clamped into the slot to restrict the metal and the actuator from rotating relative to each other; the metal ring with a holding block on the upper surface is clamped and matched with the tightener.

[0010] Furthermore, the tightener is in the shape of a sleeve, and a slot is provided at the end thereof, and the end thereof is butted against the upper surface of the metal ring of the locker, and the clamping block of the metal ring is clamped into the slot of the tightener and rotates with the rotation of the tightener.

[0011] Furthermore, the puncture strip is integrally arranged on both sides of the base, and a reinforcing rib is provided at the middle position. The hooks at the ends of the puncture strip are oppositely arranged spiral hooks, and a puncture block with a sharp outer edge is also provided on the outer side of the hook.

[0012] Furthermore, an arc-shaped groove is provided on the side of the middle end of the metal strip of the locker.

[0013] Furthermore, a holding handle is provided at the tail end of the tightener, actuator and thruster.

[0014] Furthermore, the sheath tube is provided with a guide hole penetrating one side, and is provided with three guide holes whose diameters increase sequentially from bottom to top, and a protrusion is provided at the rear end of the sheath tube toward the side through which the guide hole penetrates.

[0015] The beneficial effects of the present invention are:

[0016] After the puncture device in the present invention covers the blood vessel, the end of the puncture device is locked by the locking device to achieve ligation of the blood vessel. During the whole process, it is only necessary to insert the device under the blood vessel through the sheath, and tighten the locking device to complete the ligation. Compared with traditional surgical treatment methods, the trauma to the human body is small, and the postoperative recovery is fast. While reducing the surgical risk, it also reduces the patient's pain during the operation and the surgical pressure of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the overall structure of a blood vessel ligation device used in varicose vein surgery;

[0018] Figure 2 It is a side view of a vascular ligation device used in varicose vein surgery;

[0019] Figure 3 is a sectional view of a vascular ligation device used in varicose vein surgery;

[0020] Figure 4 is a schematic diagram of a pusher and its accessories of a vascular ligation device used in varicose vein surgery;

[0021] Figure 5 is a schematic diagram of a lock and its accessories of a vascular ligation device used in varicose vein surgery;

[0022] Figure 6 is a schematic diagram of a lock, an actuator and its accessory structure of a vascular ligation device used in varicose vein surgery;

[0023] Figure 7 is a side view of a lock and an actuator of a vascular ligation device used in varicose vein surgery;

[0024] Figure 8 is a schematic diagram of a screwing device and its accessory structure of a vascular ligation device used in varicose vein surgery;

[0025] Figure 9 is a schematic diagram of a sheath tube and its accessory structure of a vascular ligation device used in varicose vein surgery.

[0026] In the accompanying drawings, the components represented by each reference numeral are as follows:

[0027] 1 - sheath tube, 11 - guiding hole, 12 - protrusion, 2 - screwing device, 3 - actuator, 4 - pusher, 41 - sliding groove, 42 - rubber ring, 5 - puncture device, 51 - base, 52 - puncture strip, 53 - puncture block, 54 - retractor, 6 - lock, 61 - metal ring, 62 - metal strip, 7 - holding handle, 8 - card slot, 9 - clamping block. Detailed implementation manners

[0028] Based on the problems of large surgical trauma and high surgical risk in the prior art that need to be solved by the present invention, the present invention provides a vascular ligation device for use during varicose vein surgery, the device comprising: a sheath tube 1, a screwing device 2 is sleeved inside the sheath tube 1, an actuator 3 is sleeved inside the screwing device 2, a pusher 4 is sleeved inside the actuator 3, and a puncture device 5 is provided at the end of the pusher 4, and a lock 6 is provided at the end of the actuator 3.

[0029] In the present invention, the trocar 5 and the locking device 6 are respectively provided with puncture strips 52 and metal strips 62 that are distributed in alignment. The head end of the puncture strip 52 is provided with a hook 54, and both ends of the metal strip 62 are provided with integrally connected metal rings 61. When in use, the puncture strip 52 of the trocar 5 punctures through the periphery of the blood vessel and then encircles the blood vessel, serving as the basic rib for ligating the blood vessel. After the two puncture strips 52 are tightened, they compress the blood vessel to complete the blood vessel ligation; the metal strip 62 hooks the hook 54 at the end of the puncture strip 52, and by rotating the metal ring 61, a twisting restraint force is generated on the metal strip 62 to lock the end of the puncture strip 52.

[0030] To achieve the above-mentioned effect of ligating blood vessels through the trocar, both the trocar and the locking device 6 are made of metals that can coexist with the human body and have plasticity. The two puncture strips 52 of the trocar 5 are locked by the twisting restraint force of the metal of the locking device 6 to complete the blood vessel ligation.

[0031] Based on the above, the present invention will be specifically described in conjunction with the accompanying drawings. Among them, the trocar 5 and the locking device 6 are made of nitinol alloy, and the rest of the structure is made of ordinary metal.

[0032] Embodiment 1

[0033] This embodiment provides a preferred structure of a blood vessel ligation device used during varicose vein surgery:

[0034] In this embodiment, the actuator 3 is in the shape of a round rod, the pusher 4 is in the shape of a sleeve, and the screwer 2 is in the shape of a sleeve. The inner cavity of the actuator 3 is provided with a limiting block protruding from its inner surface, and the outer surface of the pusher 4 is provided with a sliding groove 41. The limiting block is engaged into the sliding groove 41 to limit the relative rotation between the actuator 3 and the pusher 4. Among them, the limiting block in this embodiment is preferably a rubber block in a compressible form. When the actuator 3 and the pusher 4 are combined with each other, after the rubber block is compressed, the sleeving movement between the two is not restricted. After the sleeving is in place, the rubber block is snapped into the sliding groove 41 under the action of its own elastic force to achieve the above-mentioned limitation.

[0035] In this embodiment, the head end of the pusher 4 is provided with a rubber ring, and the trocar 5 is provided with a cylindrical base 51. The trocar 5 is sleeved on the head end of the pusher 4 through the base 51; the inner side wall of the base 51 is provided with a groove that fits the rubber ring. When the trocar 5 is sleeved on the head end of the pusher 4, the rubber ring slides into the groove to limit and lock the pusher 4 and the locking device 6. However, due to the compressibility of the rubber ring, when a certain pulling force is applied to the pusher 4, the trocar 5 and the pusher 4 also separate, thereby realizing the pulling out of the pusher 4 after the blood vessel ligation.

[0036] Based on the above, the actuator 3 is used to transport the locker 6 and carry the locker 6 to complete the locking operation. In this embodiment, the actuator 3 is provided with a slot 8 at the end, and the locker 6 is sleeved on the outer periphery of the head end of the actuator 3 through a metal ring 61; wherein, the metal rings 61 provided at both ends of the locker 6, a metal ring 61 is provided with a clamping block 9 on the inner periphery, and a metal ring 61 is provided with a clamping block 9 on the upper surface; the metal ring 61 with the clamping block 9 on the inner periphery is sleeved on the end of the slot 8 of the actuator 3, and the clamping block 9 is clamped into the slot 8, thereby ensuring that the locker 6 and the actuator will not rotate relative to each other; and the metal ring 61 with the clamping block 9 on the upper surface is clamped and matched with the tightener 2.

[0037] In this embodiment, a clamping groove 8 is provided at the end of the tightener 2, and its end is connected to the upper surface of the metal ring 61 of the locker 6. The clamping block 9 of the metal ring 61 is clamped into the clamping groove 8 of the tightener 2. When the tightener 2 rotates, it can drive the metal ring 61 clamped therewith to rotate together; in this way, because the metal ring 61 at one end of the locker 6 is restricted and immovable, and the metal ring 61 at the other end of the locker 6 rotates with the tightener 2, the metal strip 62 is driven to twist, and the end of the puncture strip 52 of the puncture device 5 is wrapped and locked.

[0038] Based on this embodiment, when in use, the tightener 2, the actuator 3, and the pusher 4 are sequentially placed, and then:

[0039] 1. Insert the tightener 2 into the sheath 1;

[0040] 2. Place the actuator 3 into the tightener 2 and push it to a position beyond the sheath 1 and the tightener 2, sleeve the locker 6 onto the head end of the actuator 3, and clamp the metal ring 61 holding block 9 into the clamping groove 8 at the head end of the actuator 3 to complete the assembly of the locker 6 and the actuator 3;

[0041] 3. Place the pusher 4 into the actuator 3 and push it to a position beyond the actuator 3, sleeve the puncture device 5 onto the head end of the support, and adjust the positions of the pushers 4 of the actuator 3 so that the clamping block 9 and the slide groove 41 are mutually engaged, thereby completing the assembly of the puncture device 5 and the pusher 4;

[0042] 4. Press the puncture strip 52 of the puncture device 5 inwards, and simultaneously retract the actuator 3 and the pusher 4 until the puncture device 5 and the locker 6 are completely inserted into the sheath tube 1. At this time, the entire device is assembled;

[0043] 5. Use the sheath 1 to puncture the patient's affected tissue until the tip completely penetrates the blood vessel. At this time, push the actuator 3 and the pusher 4 forward at the same time until they are completely beyond the sheath 1;

[0044] 6. Push the tightener 2 forward to compress the locker 6. At this time, the metal strip 62 of the locker 6 expands outward to open the puncture strip 52 of the puncture device 5. Keep this state unchanged, and at the same time retract the actuator 3, the tightener 2, the pusher 4, and the sheath 1 until the puncture strip 52 of the puncture device 5 completely passes through the blood vessel;

[0045] 7. Continue to retract the actuator 3 and the tightener 2, so that the locker 6 returns to its original state and then continues to retract to the other side of the blood vessel. At this time, continue to retract the sheath tube 1 to the rear end of the locker 6;

[0046] 8. Fix the actuator 3, move the tightener 2 forward, compress the locker 6, and use the tightener 2 to rotate the metal ring 61 of the locker 6. When the metal strip 62 of the locker 6 and the puncture strip 52 of the puncture device 5 are buckled, completely pull out the pusher 4;

[0047] 9. Fix the actuator 3 and rotate the tightener 2 to tighten the locker 6, and pull out the actuator 3 in the process;

[0048] 10. Finally, continue to push the pusher forward and use the end to press the knotted locker 6;

[0049] 11. Finally, withdraw all structures from sheath 1, and finally withdraw sheath 1.

[0050] At this point, the patient's blood vessels have been ligated.

[0051] The only external trauma caused to the patient during the entire ligation operation is the puncture wound caused by the puncture of the sheath 1. Traditional ligation operations require incisions in the patient's affected tissue, causing wounds of more than 2 cm in length. In comparison, the advantage of the present invention is that it reduces the trauma to the patient and reduces the difficulty of the operation.

[0052] Example 2

[0053] Based on the above-mentioned embodiment 1, in this embodiment, the puncture strip 52 is integrally arranged on both sides of the base 51, and a reinforcing rib is provided at the middle position to provide support force during the puncture process of the puncture strip 52 to ensure that the puncture strip 52 completely and effectively punctures the blood vessel.

[0054] Meanwhile, in this embodiment, the hook 54 at the end of the puncture strip 52 is a spiral hook arranged opposite to each other, and a puncture block 3 with a sharp outer edge is also provided on the outer side of the hook 54. The puncture block 3 and the reinforcing rib cooperate to ensure that the puncture strip 52 can stably and effectively puncture the upper surface of the blood vessel; and the spiral hook 54 provided in this embodiment facilitates the combination of the metal strip 62 of the locking device 6 and the hook 54 when they are in contact. When the locking device 6 rotates, due to the spiral characteristics of the hook 54, the metal strip 62 will further penetrate into the hook 54 to enhance the stability of their mutual combination.

[0055] Example 3

[0056] Based on the above-mentioned Embodiment 2, in this embodiment, an arc-shaped groove is provided on the side of the middle end of the metal strip 62 of the lock 6, which not only weakens the strength of the middle of the metal strip 62, facilitating the spiral bending during the subsequent rotation and locking process, but also the arc-shaped groove is high at both sides and low in the middle. When combined with the hook 54, the hook 54 is not easily slipped out, facilitating the rotation and tightening of the lock 6 to pierce the strip 52.

[0057] Embodiment 4

[0058] In this embodiment, a holding handle 7 is provided at the tail ends of the screwing device 2, the actuator 3, and the pusher 4, facilitating the holding and operation of advancing or retracting them during the operation. At the same time, in this embodiment, the holding handle 7 is also provided with a positioning depression, facilitating the operator to control the directions of the internal puncture device 5 and the lock 6.

[0059] Embodiment 5

[0060] In this embodiment, the sheath 1 is provided with a guiding hole 11 penetrating one side, and three guiding holes with diameters gradually increasing from bottom to top are separately provided. A protrusion 12 is provided at the tail end of the sheath 1 facing the side where the guiding hole 11 penetrates. In actual use, the sheath 1 can not only guide the instrument into the affected area of the patient, but also serve as a guiding sheath 1 for other vascular surgeries. The medium enters from the guiding hole 11, and the guiding hole 11 has different sizes, expanding the range of media that can pass through, including operating instruments with different diameters, etc.

[0061] Based on the above, the vascular ligation device proposed by the present invention performs vascular ligation in a minimally invasive form. Compared with the prior art, it causes less trauma to the patient, and the surgical difficulty and surgical risk are relatively low, reducing the pressure on the surgeon.

Claims

1. A vascular ligation device for varicose vein surgery, the device comprising: The sheath tube (1) is provided with a tightener (2) in the sheath tube (1), an actuator (3) is sleeved in the tightener (2), a propeller (4) is sleeved in the actuator (3), and a puncture device (5) is provided at the end of the propeller (4), and a locking device (6) is provided at the end of the actuator (3), wherein the puncture device (5) and the locking device (6) are respectively provided with a puncture strip (52) and a metal strip (62) which are arranged in opposite positions, wherein the head end of the puncture strip (52) is provided with a There is a retractor (54), and both ends of the metal strip (62) are provided with metal rings (61) connected in an integral manner; the puncture strip (52) punctures through the periphery of the blood vessel and then embraces the blood vessel, and the metal strip (62) is hooked with the retractor (54) at the end of the puncture strip (52), and the metal ring (61) is rotated to make the metal strip (62) generate a twisting restraining force to lock the end of the puncture strip (52), and the puncture device (5) and the locking device (6) are both made of metal that can coexist with the human body.

2. A vascular ligation device for varicose vein surgery according to claim 1, characterized in that: The actuator (3) is in the shape of a round rod, and the thruster (4) is in the shape of a sleeve. The inner cavity of the actuator (3) is provided with a limit block protruding from its inner surface, and the outer surface of the thruster (4) is provided with a slide groove (41). The limit block is locked in the slide groove (41) to limit the mutual rotation between the actuator (3) and the thruster (4).

3. The vascular ligation device for varicose vein surgery according to claim 1, characterized in that: The end of the pusher (4) is provided with a rubber ring, and the puncture device (5) is provided with a cylindrical base (51), which is sleeved on the head end of the pusher (4) through the base (51), and the inner side wall of the base (51) is provided with a groove that fits the rubber ring, so that the rubber ring cooperates to lock the pusher (4) and the locker (6).

4. The vascular ligation device for varicose vein surgery according to claim 1, characterized in that: The end of the actuator (3) is provided with a slot (8), and the locker (6) is sleeved on the outer periphery of the head end of the actuator (3) through a metal ring (61); the metal rings (61) provided at both ends of the locker (6) have a tooth block provided on the inner periphery of one metal ring (61), and a holding block (9) provided on the upper surface of the other metal ring (61); the metal ring (61) with the holding block (9) provided on the inner periphery is sleeved on the end of the slot (8) of the actuator (3), and the holding block (9) is snapped into the slot (8), thereby limiting the metal and the actuator (3) from rotating relative to each other; the metal ring (61) with the holding block (9) provided on the upper surface is snap-fitted with the tightener (2).

5. A vascular ligation device for varicose vein surgery according to claim 4, characterized in that: The tightener (2) is in the shape of a sleeve, and is provided with a slot (8) at its end. The end is butted against the upper surface of a metal ring (61) of a locker (6). A retaining block (9) of the metal ring (61) is retained in the slot (8) of the tightener (2) and rotates with the rotation of the tightener (2).

6. The vascular ligation device for varicose vein surgery according to claim 3, characterized in that: The puncture strip (52) is integrally arranged on both sides of the base (51), and a reinforcing rib is provided at the middle position. The draw hook (54) at the end of the puncture strip (52) is a spiral hook arranged oppositely, and a puncture block (3) with a sharp outer edge is also provided on the outer side of the draw hook (54).

7. The vascular ligation device for varicose vein surgery according to claim 1, characterized in that: An arc-shaped groove is provided on the side of the middle end of the metal strip (62) of the locking device (6).

8. The vascular ligation device for varicose vein surgery according to claim 1, characterized in that: A holding handle (7) is provided at the tail end of the tightener (2), the actuator (3) and the thruster (4).

9. The vascular ligation device for varicose vein surgery according to claim 1, characterized in that: The sheath tube (1) is provided with a guide hole (11) penetrating one side, and is provided with three holes whose diameters increase sequentially from bottom to top. The rear end of the sheath tube (1) is provided with a protrusion (12) penetrating one side toward the guide hole (11).

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