Radiofrequency ablation electrode for varicosity

Abstract

The utility model relates to the technical field of medical instruments, in particular to a varicosity radiofrequency ablation electrode which comprises a handle, a catheter and an electrode tube, the handle is fixed at the near end of the catheter, the electrode tube is fixed at the far end of the catheter, and the far end of the electrode tube is plugged through a light-transmitting plug. A radio frequency conductor and an optical fiber are arranged in an inner cavity of the catheter in the length direction, one end of the radio frequency conductor is electrically connected with the inner wall of the electrode tube, the other end of the radio frequency conductor extends into the handle and is connected with a cable connector arranged on the outer side of the handle, and the light-emitting end of the optical fiber is fixed to the position, close to the light-transmitting plug, of the inner side of the electrode tube. According to the multi-department combined treatment instrument, combined treatment of multiple departments is effectively avoided, so that the workload of medical staff is reduced, and the treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially a varicose vein radiofrequency ablation electrode. BACKGROUND

[0002] The varicose vein radiofrequency treatment operation is a kind of minimally invasive method commonly used in treating varicose vein at present, special radiofrequency ablation electrode is introduced into varicosity great saphenous vein through puncture near knee joint, electrode generates heat energy under the action of high-frequency current, and blood vessel is caused to contract by high temperature destruction of heat energy, so as to make vein wall thickening, lumen shrinkage, reach the effect of reducing varicosity.

[0003] However, in the treatment process, in order to know the position of electrode in vein in real time during treatment process, it needs to be used with color doppler ultrasound, and at least two departments in hospital need to cooperate, which undoubtedly increases the workload of medical staff and the difficulty of patient's treatment. UTILITY MODEL CONTENT

[0004] To solve the above technical problems of prior art, the utility model provides a varicose vein radiofrequency ablation electrode.

[0005] The utility model discloses a technical scheme as follows: a varicose vein radiofrequency ablation electrode, including handle, catheter and electrode tube, the handle is fixed in the proximal end of the catheter, the electrode tube is fixed in the distal end of the catheter and the distal end of electrode tube is sealed by light transmission plug, the catheter inner chamber is provided with radio frequency conductor and optical fiber along the length direction, one end of the radio frequency conductor is electrically connected with the inner wall of electrode tube, the other end of radio frequency conductor extends to the handle and is connected with cable connector arranged on the outer side of handle, the light emitting end of optical fiber is fixed on the position of the inner side of electrode tube close to light transmission plug, and the receiving end of optical fiber extends to the handle and is connected with light emitting component arranged on the inner side of handle.Electrode tube generates heat to form treatment area under the action of high-frequency current, and light emitting component in handle transmits light signal through optical fiber, and emits light at light transmission plug at the end of electrode tube, so that medical staff can know the position of electrode tube in vein by directly observing the position of bright light on the outer side of patient's leg, without the cooperation of color doppler ultrasound, thereby reducing the workload of medical staff and improving the efficiency of treatment.

[0006] The light emitting component includes light emitting diode and lamp holder, the lamp holder is fixed in the handle, and T-shaped hole is formed in the inner side of lamp holder, the receiving end of optical fiber is fixed in the small size end of T-shaped hole through locking piece, the lamp body of light emitting diode is fixed in the large size end of T-shaped hole, and the lead wire of light emitting diode is electrically connected with cable connector.

[0007] The locking component is a locking bolt. A threaded hole is provided on the outer side of the lamp holder at a position corresponding to the small-sized end of the T-shaped hole. The locking bolt passes through the threaded hole and enters the T-shaped hole to lock and contact the optical fiber.

[0008] A thermocouple is fixed inside the electrode tube, and the thermocouple wire extends along the inner lumen of the catheter to the handle and connects to the cable connector. The temperature of the treatment area is monitored in real time via the thermocouple inside the electrode tube to ensure the effectiveness of the treatment.

[0009] The outer diameter of the electrode tube is the same as the outer diameter of the conduit. The end of the electrode tube near the conduit is formed with a plug portion that matches the inner cavity of the conduit. The plug portion is fixedly connected to the conduit with sealant.

[0010] The handle is equipped with a rigid connecting tube. One end of the rigid connecting tube is connected to the conduit and extends to the connection point between the handle and the conduit. The other end of the rigid connecting tube is fixed inside the handle by a support plate. The rigid connecting tube provides support at the connection point between the conduit and the handle, thereby improving the fixation of the conduit on the handle.

[0011] The beneficial effects of this invention are as follows: by connecting a radio frequency conductor inside the electrode tube to form an electrode end, and simultaneously laying an optical fiber inside the catheter, the light-emitting component inside the handle transmits the light signal to the optical fiber, and the light is emitted at the light-transmitting plug at the end of the electrode tube. Medical staff can know the position of the electrode tube in the vein by directly observing the position of the light on the outside of the patient's leg, without the need for color Doppler ultrasound, reducing the workload of medical staff and improving the efficiency of diagnosis and treatment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the lamp holder in this utility model;

[0015] Figure 4 yes Figure 2 A magnified view of part A in the image.

[0016] Reference numerals: 1. Handle; 2. Conduit; 3. Electrode tube; 301. Connector; 302. Raised ring; 4. Light-transmitting plug; 5. Radio frequency conductor; 6. Optical fiber; 7. Cable connector; 8. Lamp holder; 801. T-hole; 802. Boss; 803. Wiring channel; 9. Light-emitting diode; 10. Locking bolt; 11. Thermocouple; 12. Rigid connecting tube; 13. Support plate; 14. Circuit board; 15. Radio frequency switch; 16. Fiber optic switch. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Other embodiments obtained by those skilled in the art without creative effort should all fall within the protection scope of this utility model.

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a radiofrequency ablation electrode for varicose veins, including a handle 1, a catheter 2, and an electrode tube 3. The handle 1 is fixed to the proximal end of the catheter 2, and the electrode tube 3 is fixed to the distal end of the catheter 2, with the distal end of the electrode tube 3 sealed by a light-transmitting plug 4. In this embodiment, the light-transmitting plug 4 is a plug formed by UV adhesive curing. The inner cavity of the catheter 2 is provided with a radiofrequency conductor 5 and an optical fiber 6 along its length. One end of the radiofrequency conductor 5 is electrically connected to the inner wall of the electrode tube 3, and the other end of the radiofrequency conductor 5 extends into the handle 1 and is connected to a cable connector 7 located on the outside of the handle 1. Preferably, the material of the radiofrequency conductor 5 can be copper wire, and its end is fixed to the inner wall of the electrode tube 3 by welding, and the surface of the radiofrequency conductor 5 is sealed by welding. The electrode tube 3 has an insulating coating. Under the action of high-frequency current, the electrode tube 3 heats up to form the treatment area for the radiofrequency ablation electrode to be inserted into the vein for minimally invasive treatment. The light-emitting end of the optical fiber 6 is fixed inside the electrode tube 3 near the light-transmitting plug 4. Preferably, it is fixed by high-temperature adhesive bonding. The receiving end of the optical fiber 6 extends into the handle 1 and is connected to the light-emitting component set inside the handle 1. The light-emitting component inside the handle 1 transmits light signals through the optical fiber 6 and emits light at the light-transmitting plug 4 at the end of the electrode tube 3. Medical staff can know the position of the electrode tube 3 in the vein by directly observing the position of the light on the outside of the patient's leg. There is no need for color Doppler ultrasound, which reduces the workload of medical staff and improves the efficiency of diagnosis and treatment.

[0019] like Figure 2 and Figure 3 As shown, the light-emitting component includes a light-emitting diode 9 and a lamp holder 8. The lamp holder 8 is fixed inside the handle 1. Specifically, the lamp holder 8 has protrusions 802 formed at both ends, and the handle 1 has a groove formed on the inside to cooperate with the protrusions 802. A T-shaped hole 801 is opened on the inside of the lamp holder 8. The receiving end of the optical fiber 6 is fixed in the small end of the T-shaped hole 801 by a locking member. The lamp body of the light-emitting diode 9 is fixed in the large end of the T-shaped hole 801. The lead of the light-emitting diode 9 is electrically connected to the cable connector 7.

[0020] Specifically, in this embodiment, the locking component is a locking bolt 10. A threaded hole is provided on the outer side of the lamp holder 8 at a position corresponding to the small-sized end of the T-shaped hole 801. The locking bolt 10 passes through the threaded hole and enters the T-shaped hole 801 to lock and contact the optical fiber 6.

[0021] like Figure 4 As shown, a thermocouple 11 is fixed inside the electrode tube 3. Preferably, it is fixed by high-temperature adhesive bonding. The thermocouple wire of the thermocouple 11 extends along the inner lumen of the conduit 2 into the handle 1 and connects to the cable connector 7. The temperature of the treatment area is monitored in real time by the thermocouple 11 inside the electrode tube 3 to ensure the treatment effect; Figure 3 As shown, preferably, in order to ensure the wiring effect of the thermocouple wire and the radio frequency conductor 5 in the handle 1, the lamp holder 8 is provided with a wiring channel 803 through which the thermocouple wire and the radio frequency conductor 5 pass.

[0022] The outer diameter of the electrode tube 3 is the same as the outer diameter of the conduit 2. The end of the electrode tube 3 near the conduit 2 is formed with a plug portion 301 that matches the inner cavity of the conduit 2. The plug portion 301 is fixedly connected to the conduit 2 with sealant. More preferably, a protruding ring 302 is formed on the outer side of the plug portion 301, and an annular groove that matches the protruding ring 302 is formed on the inner side of the conduit 2. The connection between the electrode tube 3 and the conduit 2 is strengthened by the cooperation of the protruding ring 302 and the annular groove.

[0023] In this embodiment, due to the needs of treatment, the catheter 2 is a flexible tube, and the specific material can be polytetrafluoroethylene (PTFE) tubing. In order to ensure the firm connection between the flexible catheter 2 and the handle 1, a rigid connecting tube 12 is provided inside the handle 1. Specifically, the rigid connecting tube 12 can be a 316 stainless steel tube. One end of the rigid connecting tube 12 is connected to the catheter 2 and extends to the connection position between the handle 1 and the catheter 2. The other end of the rigid connecting tube 12 is fixed inside the handle 1 by a support plate 13. Preferably, the support plate 13 can be integrally formed with the outer shell of the handle 1 by injection molding. The two ends of the rigid connecting tube 12 are respectively connected to the catheter 2 and the support plate 13 by bonding. The outer wall of the catheter 2 is connected to the handle 1 by sealant.

[0024] For ease of operation, two circuit boards 14 are fixed inside the handle 1. The radio frequency conductor 5 and the thermocouple wire are electrically connected to the cable connector 7 through one of the circuit boards 14. The lead of the light-emitting diode 9 is electrically connected to the cable connector 7 through the other circuit board 14. Radio frequency switches 15 and fiber optic switches 16 are installed on the handle 1 to control the on and off of each circuit board 14. By operating the radio frequency switches 15 and fiber optic switches 16, the heating and ablation of the electrode tube and the light emission of the fiber optic at the far end of the electrode tube can be controlled respectively.

[0025] When medical staff use this ablation electrode, the cable connector 7 is connected to the main unit, the fiber optic switch 16 is turned on, the light-emitting diode 9 is powered on, and the light-emitting end of the fiber optic 6 forms a light ring at the distal end of the electrode tube 3 through the light-transmitting plug 4. The distal end of the electrode tube 3 is inserted into the varicose great saphenous vein through a puncture near the knee joint. Medical staff can determine the location of the electrode tube 3 by observing the position of the light on the outside of the patient's leg. After positioning, the radiofrequency switch 15 is turned on and radiofrequency heating treatment is performed. To ensure the observation effect, medical staff can also use a fluoroscopic lamp for assistance. Compared with the existing treatment methods that require color Doppler ultrasound scanning, this method effectively avoids multi-departmental joint treatment, thereby reducing the workload of medical staff and improving the efficiency of diagnosis and treatment.

Claims

1. A radiofrequency ablation electrode for varicose veins, characterized in that, The device includes a handle, a conduit, and an electrode tube. The handle is fixed to the proximal end of the conduit, and the electrode tube is fixed to the distal end of the conduit, with the distal end of the electrode tube sealed by a light-transmitting plug. The inner cavity of the conduit is provided with a radio frequency conductor and an optical fiber along its length. One end of the radio frequency conductor is electrically connected to the inner wall of the electrode tube, and the other end of the radio frequency conductor extends into the handle and is connected to a cable connector located on the outside of the handle. The light-emitting end of the optical fiber is fixed to the inner side of the electrode tube near the light-transmitting plug, and the receiving end of the optical fiber extends into the handle and is connected to a light-emitting component located on the inner side of the handle.

2. The radiofrequency ablation electrode for varicose veins according to claim 1, characterized in that, The light-emitting component includes a light-emitting diode and a lamp holder. The lamp holder is fixed inside the handle. A T-shaped hole is provided on the inner side of the lamp holder. The receiving end of the optical fiber is fixed in the small end of the T-shaped hole by a locking device. The lamp body of the light-emitting diode is fixed in the large end of the T-shaped hole. The lead of the light-emitting diode is electrically connected to the cable connector.

3. The varicose vein radiofrequency ablation electrode according to claim 2, characterized in that, The locking component is a locking bolt. A threaded hole is provided on the outer side of the lamp holder at a position corresponding to the small-sized end of the T-shaped hole. The locking bolt passes through the threaded hole and enters the T-shaped hole to lock and contact the optical fiber.

4. A radiofrequency ablation electrode for varicose veins according to any one of claims 1-3, characterized in that, A thermocouple is fixed inside the electrode tube, and the thermocouple wire extends along the inner lumen of the conduit to the handle and is connected to the cable connector.

5. A radiofrequency ablation electrode for varicose veins according to any one of claims 1-3, characterized in that, The outer diameter of the electrode tube is the same as the outer diameter of the conduit. The end of the electrode tube near the conduit is formed with a plug portion that matches the inner cavity of the conduit. The plug portion is fixedly connected to the conduit with sealant.

6. A radiofrequency ablation electrode for varicose veins according to any one of claims 1-3, characterized in that, The handle is provided with a rigid connecting tube. One end of the rigid connecting tube is connected to the conduit and extends to the connection position between the handle and the conduit. The other end of the rigid connecting tube is fixed in the handle by a support plate.

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