Radio frequency closing device for veins

Abstract

The invention relates to a radio frequency closing device for veins, belongs to the technical field of medical instruments, and solves the problems that in the prior art, the risk that the veins are burnt through in the working process of an ablation catheter is solved, the bent part of a vein is possibly punctured, and the health of a patient is damaged. The device comprises a radio frequency tube, a driving unit and a control unit, the radio frequency tube and the control unit are both connected with the driving unit, the driving unit is used for controlling the radio frequency tube to be conveyed to a target area in a blood vessel, and the radio frequency tube is used for ablating closed varicose veins. The resistance measuring module measures the resistance value of the working area of the head end and sends the resistance value to the control unit in real time, the control unit judges whether a blood vessel puncturing risk or a vein burning-through risk exists according to a comparison result, an instruction is sent to the driving motor, the driving motor rotates reversely, and the radio frequency tube retracts towards the direction of the driving unit; the radio frequency tube is prevented from puncturing the blood vessel or burning through the blood vessel through repeated radio frequency work, and damage to the health of a patient is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a radiofrequency closure device for veins. Background Art

[0002] Varicose veins refer to the venous tortuosity and dilation caused by factors such as blood stasis and weak venous walls. It is a widespread venous disease, usually occurring in the superficial venous system of the lower extremities, with the great saphenous vein and small saphenous vein being mostly affected. When symptoms appear, the diseased area bulges, which is unaesthetic. In severe cases, there are swelling, heaviness, and pain, and even ulceration of the diseased area and various serious complications may occur.

[0003] When treating varicose veins, a doctor will manually operate an ablation catheter and puncture and insert the ablation catheter into the vein. By using the high temperature generated in the ablation area of the ablation catheter, the diseased focus is ablated. After one ablation of the working part of the ablation catheter, the local blood vessel wall changes and the resistance changes. If ablation is performed repeatedly for many times, there is a risk of burning through the blood vessel and causing damage.

[0004] During the process of inserting the ablation catheter into the diseased area in the vein, the ablation catheter needs to pass through the bent part of the venous blood vessel. Due to manual operation, if the ablation catheter cannot pass through the bent part of the vein smoothly, there is a risk that the ablation catheter is likely to penetrate the blood vessel wall and cause harm to the patient's health. Summary of the Invention

[0005] In view of the above deficiencies of the prior art, the present invention provides a radiofrequency closure device for veins, which is used to solve the problem that the ablation catheter in the prior art may pierce the bent part of the venous blood vessel and cause harm to the patient's health.

[0006] To achieve the above invention purpose, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a radiofrequency closure device for veins, including a radiofrequency tube, a driving unit, and a control unit. The radiofrequency tube and the control unit are both connected to the driving unit. The driving unit is used to convey the radiofrequency tube to the target area in the blood vessel, and the radiofrequency tube is used to ablate varicose veins.

[0008] Further, the radiofrequency tube includes a tube body and a head section, and the head section is arranged on the tube body.

[0009] Further, the head section is a cone and has a guiding surface.

[0010] Further, the radiofrequency tube further includes a radiofrequency block, and the radiofrequency block is arranged on the tube body and is connected to the control unit.

[0011] Further, the driving unit includes a box body, a main driving component, and an auxiliary driving component. The main driving component and the auxiliary driving component are both arranged on the box body; the radiofrequency tube can pass through the box body, be driven by the main driving component and the auxiliary driving component, and puncture blood vessels.

[0012] Further, the main driving component includes a driving wheel and a driving motor. The driving wheel is rotatably connected to the inner wall of the box body through a rotating shaft, and the driving motor is fixedly connected to the inner wall of the box body.

[0013] Further, an anti-slip layer is provided on the rolling surface of the driving wheel to increase the friction of the driving wheel.

[0014] Further, the anti-slip layer is a rubber layer.

[0015] Further, the control unit includes a display module and a power module. The display module and the power module are both arranged on the box body.

[0016] Further, the control unit further includes a speed regulation handwheel arranged on the box body, and the speed regulation handwheel is used to adjust the rotation speed of the driving motor.

[0017] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0018] (1) If the head section of the present invention penetrates into the blood vessel wall, the resistance measurement module measures the resistance value of the blood vessel wall and sends the resistance value to the control unit in real time. The control unit judges that the blood vessel is punctured according to the comparison result, sends an instruction to the driving motor, and the driving motor reverses, and the radiofrequency tube retracts towards the driving unit to prevent the radiofrequency tube from piercing through the blood vessel and avoid damaging the health of the patient;

[0019] (2) The control unit of the radiofrequency closing device of the present invention can heat each radiofrequency block separately, and medical staff can control the length of the ablation area; a radiofrequency tube including a plurality of radiofrequency blocks can be applicable to lesion areas of different lengths, reducing the frequency of replacing the radiofrequency tube or not replacing the radiofrequency tube, shortening the operation time, and improving the operation efficiency;

[0020] (3) The driving unit of the present invention can drive the movement of the radiofrequency tube by electricity, saving the physical strength of medical staff, and medical staff can focus more on avoiding the bent part of the venous blood vessel with the ablation catheter, improving the operation efficiency;

[0021] (4) The positioning spring of the present invention can push the wheel frame and the driven wheel towards the driving wheel, and the driven wheel can push radiofrequency tubes of various thicknesses towards the driving wheel to ensure that both the driving wheel and the driven wheel can firmly clamp radiofrequency tubes of different diameters;

[0022] (5) The filled sealing airbag of the present invention can achieve sealing between the RF tube and the sheath tube unit, preventing blood from entering the box body along with the RF tube and avoiding damage to the control unit; it can also prevent blood from contaminating the rolling surface of the driving wheel and avoid causing the driving wheel to slip.

[0023] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can become obvious from the description or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the closing device;

[0025] Figure 2 It is the overall structural diagram of the radio frequency tube;

[0026] Figure 3 is a schematic diagram of the overall structure of the drive unit;

[0027] Figure 4 Schematic diagram of the axial cross-section structure of the driving wheel;

[0028] Figure 5 Schematic diagram of the longitudinal structure of the sheath tube unit;

[0029] Figure 6 Schematic diagram of the overall structure of the switching unit.

[0030] Reference numerals:

[0031] 1-RF tube; 2-driving unit; 3-control unit; 4-sealing unit; 5-adapter unit; 6-drainage valve; 11-tube body; 12-head section; 13-RF block; 21-box body; 22-driving wheel; 23-driving motor; 24-driving gear; 25-driven gear; 26-driven wheel; 27-wheel frame; 28-fixed block; 29-positioning rod; 30-positioning spring; 31-first electrode sheet; 32-second electrode sheet; 33-display module; 34-power module; 35-speed control handwheel; 41-sheath body; 42-flange; 51-clamping seat; 52-connecting plate; 53-locking protrusion; 54-pressing plate; 61-sealing airbag; 221-wheel body; 222-first ring groove; 223-second ring groove. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention will be described below to facilitate those skilled in the art to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions made using the concept of the present invention are within the scope of protection.

[0033] As Figure 1 shown, a radiofrequency closure device for veins (hereinafter referred to as the closure device) includes a radiofrequency tube 1, a driving unit 2, and a control unit 3. The radiofrequency tube 1 and the control unit 3 are both connected to the driving unit 2. The driving unit 2 is used to transport the radiofrequency tube 1 to the target area in the blood vessel and retract it to the next target area, and the radiofrequency tube 1 radiofrequency closes the diseased blood vessel.

[0034] Preferably, as Figure 2 shown, the radiofrequency tube 1 includes a tube body 11 and a head section 12, and the head section 12 is arranged on the tube body 11. The head section 12 is a cone and has a guiding surface, and the guiding surface has a smoothly transitioning arc curve, which can play a guiding role and avoid the head section 12 being sharp and stabbing the blood vessel. The head section 12 is used to guide the body 11 to travel in the blood vessel.

[0035] Preferably, the control unit 3 includes a resistance measuring module. The resistance measuring module includes a first electrode plate 31, a second electrode plate 32, and a resistance calculator (not shown in the figure). The first electrode plate 31 and the second electrode plate 32 are both arranged on the end surface of the head section 12, and both the first electrode plate 31 and the second electrode plate 32 are connected to the resistance calculator, and the resistance calculator is arranged on the control unit 3. The resistance measuring module is used to measure the resistance of the patient's blood or tissue and send it to the control unit 3. When the head section 12 is in the blood, the resistance measuring module measures the resistance value of the blood; if the head section 12 pierces into the blood vessel wall, the resistance measuring module measures the resistance value of the blood vessel wall and sends the resistance value to the control unit 3 in real time. The control unit 3 can judge whether the blood vessel is punctured and prompt the medical staff or send an instruction to the driving unit 2 to stop the radiofrequency tube 1 from advancing or retract the radiofrequency tube 1.

[0036] The resistivity of human blood is about 1.5 Ω·m. And the resistance of blood vessels is much higher than that of blood, and the resistivity of blood vessel walls can reach more than 100 Ω·m. If only comparing these two data simply, assuming that the length and cross-sectional area of a section of blood vessel and the blood in it are the same, according to the resistance formula R = ρSl (R is resistance, ρ is resistivity, l is length, S is cross-sectional area), only considering the resistivity factor, the resistance of blood vessels is dozens of times or even higher than the resistance of blood. The difference between the blood resistance and the blood vessel resistance obtained by the resistance measuring module is obvious.

[0037] Preferably, insulating layers are provided between the first electrode plate 31, the second electrode plate 32 and the head section 12 to prevent short circuit between the first electrode plate 31 and the second electrode plate 32.

[0038] Preferably, the working frequency of the resistance measuring module is 1 Hz - 10 Hz in real time.

[0039] Preferably, the radio frequency tube 1 further includes a radio frequency block 13. The radio frequency block 13 is arranged on the tube body 11 and is connected to the control unit 3. The radio frequency block 13 is used to generate high-frequency alternating current and heat to close the diseased blood vessels by radio frequency.

[0040] Preferably, there are multiple radio frequency blocks 13, and the multiple radio frequency blocks 13 are arranged continuously along the tube body 11. The control unit 3 can heat each radio frequency block 13 separately, and medical staff can control the length of the ablation area. A radio frequency tube 1 including multiple radio frequency blocks 13 can be applicable to diseased areas of different lengths, reduce the frequency of replacing the radio frequency tube 1 or not replace the radio frequency tube, shorten the operation time, and improve the operation efficiency.

[0041] Preferably, as Figure 3 shown, the driving unit 2 includes a box body 21, a main driving component and an auxiliary driving component. The main driving component and the auxiliary driving component are both arranged on the box body 21. The radio frequency tube 1 can pass through the box body 21 and is driven by the main driving component and the auxiliary driving component to puncture the blood vessels.

[0042] Preferably, the main driving component includes a driving wheel 22, a driving motor 23, a driving gear 24 and a driven gear 25. The driving wheel 22 is rotatably connected to the inner wall of the box body 21 through a rotating shaft. The driven gear 25 is fixedly connected to the driving wheel 22 and is coaxial with the driving wheel 22. The driving motor 23 is fixedly connected to the inner wall of the box body 21. The driving gear 24 is arranged on the output shaft of the driving motor 23. The driving gear 24 meshes with the driven gear 25. The radio frequency tube 1 is clamped between the driving wheel 22 and the auxiliary driving component. The driving wheel 22 is used to drive the radio frequency tube 1. The driving motor 23 is connected to the control unit 3. The control unit 3 can control the driving motor 23 to rotate, so as to transmit power to the driven gear 25 and the driving wheel 22 through the driving gear 24. The driving wheel 22 rotates to drive the radio frequency tube 1 to slide along the box body 21. Since the driving unit 2 can drive the radio frequency tube 1 to move by electricity, it saves the physical strength of medical staff, and medical staff can focus more on avoiding the bent parts of the venous blood vessels by the ablation catheter, improving the operation efficiency.

[0043] Preferably, both the driving gear 24 and the driven gear 25 are bevel gears, and the output shaft of the driving motor 23 can be perpendicular to the rotation axis of the driving wheel 22, thereby saving the space occupied by the box body 21.

[0044] Preferably, the control unit 3 needs to pre-load the patient's blood resistance and blood vessel wall resistance data in advance, and compare them with the measured data of the resistance measuring module in real time. During the puncture stage, the control unit 3 controls the driving motor 23 to rotate forward, driving the radiofrequency tube 1 to puncture the blood vessel in the direction of the blood vessel lesion. At this time, the head section 12 is in the patient's blood, and the resistance measuring module measures the resistance value of the blood and sends it to the controller 3; if the head section 12 penetrates into the blood vessel, the resistance measuring module measures the resistance value of the blood vessel. The control unit 3 judges that the blood vessel is punctured according to the comparison result, sends an instruction to the driving motor 23, and the driving motor 23 rotates in reverse, and the radiofrequency tube 1 retracts towards the driving unit 2 to prevent the radiofrequency tube 1 from piercing through the blood vessel and avoiding damage to the patient's health.

[0045] Preferably, as Figure 4 shown, in order to enable the driving wheel 22 to adapt to radiofrequency tubes 1 of various different thicknesses, the driving wheel 22 includes a wheel body 221, a first annular groove 222 and a second annular groove 223. The wheel body 221 includes a rolling surface. The first annular groove 222 is opened on the rolling surface. The second annular groove 223 is opened on the first annular groove 222, and the rolling surface, the first annular groove 222 and the second annular groove 223 are concentric. The first annular groove 222 and the second annular groove 223 can increase the contact area between the rolling surface and the outer wall of the radiofrequency tube 1 and increase the friction force of the driving wheel 22. The first annular groove 222 is used to adapt to radiofrequency tubes 1 with a large outer diameter, and the second annular groove 223 is used to adapt to radiofrequency tubes 1 with a small outer diameter, so that the driving wheel 22 can adapt to radiofrequency tubes 1 of various different thicknesses.

[0046] Preferably, in order to ensure the driving force of the driving wheel 22 on the radiofrequency tube 1, an anti-slip layer is provided on the rolling surface to increase the friction force of the driving wheel 22 and prevent the driving wheel 22 from slipping relative to the outer wall of the radiofrequency tube 1.

[0047] Preferably, in order to simultaneously increase the friction force of the driving wheel 22 and protect the outer wall of the radiofrequency tube 1, the anti-slip layer is a rubber layer.

[0048] Preferably, as Figure 3 shown, the auxiliary driving assembly includes a driven wheel 26 and a wheel frame 27. The wheel frame 27 is connected to the box body 21, and the driven wheel 26 is rotatably connected to the wheel frame 27. The radiofrequency tube 1 is clamped between the driving wheel 22 and the driven wheel 26. The radiofrequency tube 1 rolls on the driven wheel 26 to reduce the wear of the outer wall of the radiofrequency tube 1.

[0049] Preferably, the structure of the driven wheel 26 is the same as that of the driving wheel 22. The driven wheel 26 includes a wheel body 221, a first annular groove 222 and a second annular groove 223.

[0050] In some alternative embodiments, the RF tube 1 is a variety of RF tubes with different diameters. To enable the driving unit 2 to adapt to RF tubes 1 with various different diameters, the auxiliary driving assembly further includes a fixing block 28 and a positioning rod 29. The fixing block 28 is arranged on the inner wall of the box body 21 and is provided with a positioning rod hole. One end of the positioning rod 29 is fixedly connected to the wheel frame 27, and the other end of the positioning rod 29 is a free end. The free end of the positioning rod 29 can pass through the positioning rod hole of the fixing block 28, and the wheel frame 27 and the positioning rod 29 can slide along the positioning rod hole, so as to adjust the distance between the driven wheel 26 and the driving wheel 22, and different diameters of RF tubes 1 can be clamped between the driving wheel 22 and the driven wheel 26.

[0051] Preferably, to prevent the wheel frame 27 from rotating around the positioning rod 29, thereby driving the driven wheel 26 to deflect and interfering with the driving of the RF tube 1 by the driving unit 2, the positioning rod 29 is a multi-faceted rod, and the outer surface of the positioning rod 29 is the same as the inner surface of the positioning rod hole, ensuring that the positioning rod 29 will not rotate circumferentially when passing through the positioning rod hole, thereby preventing the wheel frame 27 from rotating around the positioning rod 29 and avoiding the deflection of the driven wheel 26, ensuring the normal driving of the RF tube 1 by the driving unit 2.

[0052] Preferably, to enable the driving unit 2 to adapt to RF tubes 1 with various different diameters by itself, the auxiliary driving assembly further includes a positioning spring 30. The positioning spring 30 is sleeved on the positioning rod 29. One end of the positioning spring 30 is connected to the wheel frame 27, and the other end of the positioning spring 30 is connected to the fixing block 28. The positioning spring 30 is used to push the wheel frame 27 and the driven wheel 26 towards the driving wheel 22. The driven wheel 26 can push RF tubes 1 with various different thicknesses towards the driving wheel 22, ensuring that both the driving wheel 22 and the driven wheel 26 can firmly clamp RF tubes 1 with different diameters.

[0053] Preferably, as Figure 1 and Figure 3 shown, the control unit 3 further includes a display module 33 and a power supply module 34. The display module 33 and the power supply module 34 are both arranged on the box body 21. The display module 33 is used to display information such as the movement direction and movement speed of the RF tube 1, and the power supply module 34 is used to supply power to the closing device of this embodiment.

[0054] Preferably, the power supply module 34 includes a battery. The closing device of this embodiment can be powered by the battery and operate independently without being plugged into the power grid.

[0055] Preferably, the control unit 3 further includes a speed regulation handwheel 35. The speed regulation handwheel 35 is arranged on the box body 21. The speed regulation handwheel 35 is used to adjust the rotation speed of the driving motor 23, thereby changing the rotation speed of the driving wheel 22, and finally adjusting the movement speed of the RF tube 1.

[0056] Compared with the prior art, when the head section 12 of the closing device in this embodiment is in the blood, the resistance measuring module measures the resistance value of the blood; if the head section 12 pierces into the blood vessel wall, the resistance measuring module measures the resistance value of the blood vessel wall and sends the resistance value to the control unit 3 in real time. The control unit 3 judges that the blood vessel is punctured according to the comparison result, sends an instruction to the driving motor 23, and the driving motor 23 reverses, so that the radiofrequency tube 1 retracts towards the driving unit 2, preventing the radiofrequency tube 1 from piercing through the blood vessel and avoiding damaging the health of the patient; the control unit 3 can heat each radiofrequency block 13 separately, and medical staff can control the length of the ablation area. A radiofrequency tube 1 including a plurality of radiofrequency blocks 13 can be applicable to lesion areas of different lengths, reducing the frequency of replacing the radiofrequency tube or not replacing the radiofrequency tube, shortening the operation time and improving the operation efficiency; the driving unit 2 can drive the radiofrequency tube 1 to move by using electricity, saving the physical strength of medical staff, and medical staff can focus more attention on avoiding the bent part of the vein blood vessel by the ablation catheter, improving the operation efficiency; the positioning spring 30 is sleeved on the positioning rod 29, one end of the positioning spring 30 is connected with the wheel frame 27, the other end of the positioning spring 30 is connected with the fixed block 28, and the positioning spring 30 is used to push the wheel frame 27 and the driven wheel 26 towards the driving wheel 22. The driven wheel 26 can push radiofrequency tubes 1 of various different thicknesses towards the driving wheel 22, ensuring that both the driving wheel 22 and the driven wheel 26 can firmly clamp radiofrequency tubes 1 of different diameters.

[0057] Embodiment 2:

[0058] When the radiofrequency tube 1 retracts towards the driving unit 2, the blood of the patient will adhere to the outer wall of the radiofrequency tube 1. If the blood enters the box body 21 along with the radiofrequency tube 1, it will damage the control unit 3; if the blood contaminates the rolling surface of the driving wheel 22, it will reduce the friction of the rolling surface and cause the driving wheel 22 to slip. For this reason, another specific embodiment of the closing device of the present invention is as Figure 1 and Figure 5 shown. On the basis of Embodiment 1, a sheath tube unit 4, a clamping unit 5 and a sealing unit 6 are added. The sheath tube unit 4 is used for percutaneous puncture and insertion into the vein blood vessel to provide a channel for the radiofrequency tube 1 to enter the vein blood vessel. The clamping unit 5 is used to connect the driving unit 2 and the sheath tube unit 4, and the sealing unit 6 is used to achieve sealing between the radiofrequency tube 1 and the sheath tube unit 4 to prevent the blood from entering the box body 21 along the outer wall of the radiofrequency tube 1.

[0059] Preferably, the sheath tube unit 4 includes a sheath tube body 41 and a flange 42, and the flange 42 is arranged on the outer wall of the end face of the sheath tube body 41. The sheath tube body 41 is used for piercing into the blood vessel of the patient.

[0060] Preferably, as Figure 6As shown, the clamping unit 5 includes a clamping seat 51, which is arranged on the side wall of the box body 21. The clamping seat 51 can be inserted into the sheath tube body 41, so as to connect the drive unit 2 and the sheath tube unit 4. The clamping seat 51 is a cylinder or a cone, and the hollow part of the clamping seat 51 is used for passing the radio frequency tube 1.

[0061] Preferably, in order to stabilize the connection between the drive unit 2 and the sheath unit 4, the clamping unit 5 further includes a first clamp. The first clamp includes a connecting plate 52 and a locking protrusion 53. The two ends of the connecting plate 52 are respectively connected to the side wall of the box body 21 and the locking protrusion 53. The locking protrusion 53 can be connected to the flange 42 to prevent the sheath body 41 from being separated from the clamping seat 51. The connecting plate 52 is an elastic connecting plate. The clamping seat 51 is inserted into the sheath body 41, and the locking protrusion 53 can be connected to the flange 42. The connecting plate 52 prevents the locking protrusion 53 from being separated from the flange 42, thereby ensuring a stable connection between the drive unit 2 and the sheath unit 4.

[0062] Preferably, in order to disengage the locking protrusion 53 from the flange 42, the first buckle also includes a pressure plate 54, which is connected to the locking protrusion 53. By pushing the pressure plate 54 in the direction of the contract 21, the locking protrusion 53 can be disengaged from the flange 42, and the drive unit 2 can be disengaged from the sheath unit 4.

[0063] Preferably, the clamping unit 5 further includes a second clamp, which has the same structure as the first clamp. The second clamp and the first clamp are symmetrically arranged with the clamping seat 51 as the center, further ensuring a stable connection between the driving unit 2 and the sheath unit 4.

[0064] Preferably, the sealing unit 6 includes a sealing airbag 61 and an inflation mechanism (not shown in the figure), the sealing airbag 61 is arranged on the clamping seat 51, the inflation mechanism is arranged on the box body 21, and the inflation mechanism is connected to the control unit 3 and the sealing airbag 61 respectively, and the control unit 3 can control the inflation mechanism to inflate the sealing airbag 61. The filled sealing airbag 61 is used to achieve sealing between the RF tube 1 and the sheath unit 4.

[0065] When the RF tube 1 retreats toward the driving unit 2, the patient's blood will adhere to the outer wall of the RF tube 1. If the blood enters the box body 21 along with the RF tube 1, the control unit 3 will be damaged; if the blood stains the rolling surface of the driving wheel 22, the friction of the rolling surface will be reduced, causing the driving wheel 22 to slip. The filled sealing airbag 61 can achieve sealing between the RF tube 1 and the sheath unit 4, preventing the blood from entering the box body 21 along with the RF tube 1, avoiding damage to the control unit 3; it can also prevent the blood from staining the rolling surface of the driving wheel 22, avoiding the driving wheel 22 from slipping.

[0066] Compared with Embodiment 1, the snap-in seat 51 of this embodiment can be inserted into the sheath body 41, thereby connecting the driving unit 2 and the sheath unit 4; when the snap-in seat 51 is inserted into the sheath body 41, the locking lug 53 can be connected to the flange 42, and the connecting plate 52 prevents the locking lug 53 from detaching from the flange 42, ensuring the stable connection between the driving unit 2 and the sheath unit 4; the inflated sealing airbag 61 can achieve sealing between the radiofrequency tube 1 and the sheath unit 4, preventing blood from entering the box body 21 along with the radiofrequency tube 1 and avoiding damage to the control unit 3; it can also prevent blood from contaminating the rolling surface of the driving wheel 22 and avoid causing the driving wheel 22 to slip.

[0067] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A radiofrequency closure device for a vein, characterized in that: The invention comprises a radio frequency tube (1), a driving unit (2) and a control unit (3); the radio frequency tube (1) and the control unit (3) are both connected to the driving unit (2); the driving unit (2) is used to transport the radio frequency tube (1) to a target area in a blood vessel; and the radio frequency tube (1) is used to ablate varicose veins.

2. The radiofrequency closure device for veins according to claim 1, characterized in that: The radio frequency tube (1) comprises a tube body (11) and a head section (12), wherein the head section (12) is arranged on the tube body (11).

3. The radiofrequency closure device for veins according to claim 2, characterized in that: The head section (12) is a cone and has a guide surface.

4. The radiofrequency closure device for veins according to claim 2, characterized in that: The radio frequency tube (1) further comprises a radio frequency block (13), wherein the radio frequency block (13) is arranged on the tube body (11) and is connected to the control unit (3).

5. The radiofrequency closure device for veins according to claim 1, characterized in that: The driving unit (2) comprises a box body (21), a main driving component and an auxiliary driving component, wherein the main driving component and the auxiliary driving component are both arranged on the box body (21); the radio frequency tube (1) can pass through the box body (21), be driven by the main driving component and the auxiliary driving component, and puncture a blood vessel.

6. The radiofrequency closure device for veins according to claim 5, characterized in that: The main driving assembly comprises a driving wheel (22) and a driving motor (23); the driving wheel (22) is rotationally connected to the inner wall of the box body (21) via a rotating shaft; and the driving motor (23) is fixedly connected to the inner wall of the box body (21).

7. The radiofrequency closure device for veins according to claim 6, characterized in that: An anti-skid layer is provided on the rolling surface of the driving wheel (22) to increase the friction force of the driving wheel (22).

8. The radiofrequency closure device for veins according to claim 7, characterized in that: The anti-slip layer is a rubber layer.

9. The radiofrequency closure device for veins according to claim 5, characterized in that: The control unit (3) comprises a display module (33) and a power module (34), and the display module (33) and the power module (34) are both arranged on the box body (21).

10. The radiofrequency closure device for veins according to claim 6, characterized in that: The control unit (3) further comprises a speed regulating hand wheel (35), which is arranged on the box body (21) and is used to adjust the rotation speed of the driving motor (23).

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