A temperature-controlled varicose vein electrode with cooling cycle

Abstract

The present invention relates to a temperature-controlled varicose vein electrode with a cold cycle, belonging to the technical field of medical devices. The temperature-controlled varicose vein electrode with a cold cycle of the present invention comprises an electrode front end structure, an electrode body of a water-cooling structure, and a handle. The present invention simplifies the cold cycle water circuit structure design, wherein the cooling water inlet pipe and the outer sleeve are made of high-temperature resistant non-metallic materials, and a double thermal insulation design is performed in terms of material and structure. The design structure is simple, and it can safely and effectively puncture into or around the varicose vein cavity, and can continuously perform microwave treatment to improve treatment efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a temperature-controlled varicose vein electrode with a cold cycle. Background Art

[0002] Varicose veins of the lower extremities are common vascular surgical diseases in clinical general surgery. They are clinical symptoms of chronic venous dysfunction of the lower extremities. They are caused by reflux caused by venous valve insufficiency. The main clinical symptoms are calf soreness, swelling, itching in the foot boot area, and even venous rupture and bleeding, with a high incidence rate. Varicose veins of the lower extremities are also called chronic venous insufficiency of the lower extremities, including two types: varicose veins of the lower extremities and deep venous valve insufficiency. The clinical symptoms are the bending and expansion of the superficial veins of the lower extremities. Long-term varicose veins can cause local pain, skin pigmentation, ulceration, lower extremity swelling, limited activity, etc., which seriously affect the patient's life and work. Surgery is the main means of treating varicose veins of the great saphenous vein. The traditional high ligation of the great saphenous vein combined with segmental stripping is more traumatic and takes a long time to recover clinically. With the rapid development of minimally invasive technology, microwave therapy is selected in the treatment of varicose veins of the lower extremities. It has the advantages of less trauma, good efficacy and low recurrence rate, and gradually replaces traditional developmental surgery as the main surgical procedure for the treatment of varicose veins of the great saphenous vein. Microwave treatment of varicose veins in the lower limbs can effectively alleviate symptoms, improve skin ulcers and promote skin healing.

[0003] Early varicose vein radiators only had laser positioning for treatment, such as the product with patent 200620042485.1; the varicose vein treatment device with cold circulation with patent 200820160703.0 proposed the concept of cold circulation, but the microwave radiator used in it had a sharp head, which was easy to be improperly operated during use, and was not conducive to inserting into a vein more than 1 meter long for treatment, especially at the bifurcation of the blood vessels, where it was more likely to pierce the blood vessels and tissues; later, the varicose vein electrode with round head temperature control design with patent 201610743978.6 appeared, which was not used in actual surgery. During the process, the cable of the electrode will become too hot and must be switched on and off intermittently to prevent the high temperature from burning healthy human tissue during microwave treatment, while protecting the electrode from damage. Patent 201821770152.X improves the above defects, but the design of this patent is relatively complex, with a variety of metal tubes built in. When the length is longer than 1 meter, the flexibility is not enough, and the overall design is also thicker in diameter after molding, which is inconvenient in actual use. Although the cold cycle design improves the temperature of the electrode cable, various metal materials have strong thermal conductivity, and the improvement effect does not meet the expected clinical effect. Summary of the invention

[0004] The object of the present invention is to provide a temperature-controlled varicose vein electrode with a cold cycle, which has a simple design structure and can safely and effectively puncture into or around the varicose vein cavity, and can continuously perform microwave treatment to improve treatment efficiency.

[0005] To achieve the above objectives, according to the technical solution provided by the present invention, the temperature-controlled varicose vein electrode with cold circulation includes an electrode front end structure, an electrode body with a water-cooling structure, and a handle.

[0006] The front end structure of the electrode includes a round-headed microwave needle, a polytetrafluoroethylene bushing, a front end metal ferrule, a coaxial cable, and a temperature measuring thermocouple; the inner conductor of the coaxial cable is inserted into the through hole at the tail of the round-headed microwave needle and fixed by welding; the polytetrafluoroethylene bushing is sleeved on the cylinder at the tail of the round-headed microwave needle; the front end inner hole of the front end metal ferrule is sleeved on the cylinder at the tail of the polytetrafluoroethylene bushing; the head of the temperature measuring thermocouple is sleeved inside the front end metal ferrule.

[0007] The electrode body of the water-cooling structure includes a cooling water inlet pipe, an outer sleeve, and a tail metal ferrule; the front end of the cooling water inlet pipe is fixedly connected to the front end metal ferrule; one end of the outer sleeve is mounted on the barbed tube at the tail of the metal ferrule, and the other end is mounted on the tail metal ferrule, and they are fixed with high-temperature glue.

[0008] The handle includes a water outlet tank, a water inlet tank, a water outlet pipe joint, a water inlet pipe joint, a temperature measuring joint, and a microwave joint; the front end of the water outlet tank is welded and fixed to the tail metal ferrule; the front end of the water inlet tank and the rear end of the water outlet tank are provided with water-isolating rings, which are water-isolatingly fixedly connected to the outer wall of the rear end of the cooling water inlet pipe at the water-isolating ring; the water outlet pipe joint is connected to the water outlet tank, the water inlet pipe joint is connected to the water inlet tank, the temperature measuring joint is connected to the temperature measuring thermocouple through an extremely fine thermocouple wire, and the microwave joint is connected to a coaxial cable.

[0009] Furthermore, the cooling water inlet pipe has three cooling water outlets on the front side.

[0010] Furthermore, the coaxial cable is built into a cooling water inlet pipe, and the cooling water inlet pipe and the extremely fine thermocouple wire are built into an outer sleeve.

[0011] Furthermore, the round-head microwave needle, the polytetrafluoroethylene bushing and the front-end metal ferrule are sprayed with a 0.03MM thick Teflon coating.

[0012] Furthermore, the cooling water inlet pipe is made of a polyfluoro tube, the outer sleeve is made of a PA12 nylon tube, and the length of the outer sleeve is 1 meter.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention simplifies the cold circulation water circuit structure design, in which the cooling water inlet pipe and the outer sleeve are made of high-temperature resistant non-metallic materials, and a double thermal insulation design is performed in terms of material and structure, which avoids the problem of temperature conduction during microwave treatment causing the needle rod to overheat, the patient to be unable to bear the pain due to excessive temperature, and even burning normal human tissue. It can also prevent the problem of easy damage to the electrode due to excessive temperature.

[0015] 2. The engineering plastics selected for the cooling water inlet pipe and the outer sleeve of the present invention have good electrical insulation properties, high temperature resistance, impact resistance and chemical stability. The properties of the thermoplastic elastomer material of the cooling water inlet pipe and the outer sleeve make the electrode have good flexibility and bendability, making it easier for the electrode to establish a venous access during treatment.

[0016] 3. The front end structure of the electrode of the present invention is sprayed with a Teflon coating, which increases the lubrication effect of the electrode during the puncture process and plays an anti-sticking role during the high-temperature ablation process.

[0017] 4. The temperature measuring thermocouple designed in the present invention performs temperature acquisition and control, which solves the problem of intermittent ablation treatment being required due to excessive temperature. The effective electrode head temperature control combined with the cold cycle design allows doctors to perform continuous ablation during the treatment process, reducing treatment time and improving treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front end structure of the electrode of the present invention.

[0019] Figure 2 The figure is a cross-sectional schematic diagram of the electrode body of the water-cooling structure of the electrode of the present invention.

[0020] Figure 3 Schematic diagram of the handle of the electrode of the present invention.

[0021] Figure 4 Schematic diagram of the overall structure of the electrode of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 As shown, the electrode front end structure 1 includes a round microwave needle 10, a polytetrafluoroethylene bushing 11, a front end metal ferrule 12, a coaxial cable 13, and a temperature measuring thermocouple 14; the inner conductor of the coaxial cable 13 is inserted into the through hole at the tail of the round microwave needle 10 and fixed by welding; the polytetrafluoroethylene bushing 11 is mounted on the cylinder at the tail of the round microwave needle 10; the front end inner hole of the front end metal ferrule 12 is mounted on PTFE bushing 11 The head of the temperature measuring thermocouple 14 is mounted inside the front metal ferrule 12.

[0024] like Figure 2 , Figure 3 As shown, the electrode body 2 of the water-cooling structure includes a cooling water inlet pipe 20, an outer sleeve 21, and a tail metal ferrule 22; the front end of the cooling water inlet pipe 20 is fixedly connected to the front metal ferrule 12; one end of the outer sleeve 21 is mounted on the barbed tube at the tail of the front metal ferrule 12, and the other end is mounted on the tail metal ferrule 22, and they are fixed with high-temperature glue respectively.

[0025] like Figure 3 As shown, the handle includes a water outlet box 23, a water inlet box 24, a water outlet pipe joint 25, a water inlet pipe joint 26, a temperature measuring joint 27, and a microwave joint 28; the front end of the water outlet box 23 is welded and fixed to the tail metal ferrule 22; a water isolating ring 29 is provided at the front end of the water inlet box 24 and the rear end of the water outlet box 23, and a water isolating and fixed connection is made with the outer wall of the rear end of the cooling water inlet pipe 20 at the water isolating ring 29; the water outlet pipe joint 25 is connected to the water outlet box 23, the water inlet pipe joint 26 is connected to the water inlet box 24, the temperature measuring joint 27 is connected to the temperature measuring thermocouple 14 through an extremely fine thermocouple wire 15, and the microwave joint 28 is connected to the coaxial cable 13;

[0026] The cooling water inlet pipe 20 has three cooling water outlets 17 on the side of the front end. The cooling water flows from the water inlet pipe joint 26 into the water inlet box 24, flows into the cooling water inlet pipe 20, flows out from the three cooling water outlets 17, flows into the water outlet box 23 along the inner hole of the outer sleeve 21, and then flows out from the water outlet pipe joint 25.

[0027] The coaxial cable 13 is built into the cooling water inlet pipe 20 , and the cooling water inlet pipe 20 and the ultra-fine thermocouple wire 15 are built into the outer sleeve 21 .

[0028] like Figure 4 As shown, the temperature-controlled varicose vein electrode with cold circulation comprises an electrode front end structure 1, an electrode body 2 with a water-cooling structure, and a handle 3. The cooling water inlet pipe 20 in the electrode body 2 with a water-cooling structure adopts a polytetrafluoroethylene tube, the outer sleeve 21 adopts a PA12 nylon tube, and the length of the outer sleeve exposed outside the handle is 1 meter;

[0029] The microwave connector 28 and the temperature measuring connector 27 are output through a microwave cable 31 and connected to a microwave host through a microwave connector 32 and a temperature measuring connector 33 on the cable;

[0030] The water outlet pipe joint 25 is externally connected to the water outlet pipe 34, and after the water inlet pipe joint 26 is externally connected to the water inlet pipe 35, the water pipe is connected to the microwave host end.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A temperature-controlled varicose vein electrode with a cold cycle, characterized in that: It includes an electrode front end structure, an electrode body with a water cooling structure, and a handle; The front end structure of the electrode includes a round microwave needle, a polytetrafluoroethylene bushing, a front metal ferrule, a coaxial cable, and a temperature measuring thermocouple; the inner conductor of the coaxial cable is inserted into the through hole at the tail of the round microwave needle and fixed by welding; the polytetrafluoroethylene bushing is sleeved on the cylinder at the tail of the round microwave needle; the front inner hole of the front metal ferrule is sleeved on the cylinder at the tail of the polytetrafluoroethylene bushing; the tail of the front metal ferrule extends out of the polytetrafluoroethylene bushing, and the tail inner hole of the front metal ferrule, the cylinder at the tail of the polytetrafluoroethylene bushing and the coaxial cable form a cavity, and the head of the temperature measuring thermocouple is sleeved in the cavity; The electrode body of the water-cooling structure comprises a cooling water inlet pipe, an outer sleeve, and a tail metal ferrule; the front end of the cooling water inlet pipe is fixedly connected to the front metal ferrule; one end of the outer sleeve is mounted on the barbed tube at the tail of the metal ferrule, and the other end is mounted on the tail metal ferrule, and they are fixed with high-temperature glue respectively; The handle includes a water outlet tank, a water inlet tank, a water outlet pipe joint, a water inlet pipe joint, a temperature measuring joint, and a microwave joint; the front end of the water outlet tank is welded and fixed to the tail metal ferrule; a water isolating ring is provided at the front end of the water inlet tank and the rear end of the water outlet tank, and a water isolating and fixed connection is made with the outer wall of the rear end of the cooling water inlet pipe at the water isolating ring; the water outlet pipe joint is connected to the water outlet tank, the water inlet pipe joint is connected to the water inlet tank, the temperature measuring joint is connected to the temperature measuring thermocouple through an extremely fine thermocouple wire, and the microwave joint is connected to a coaxial cable; The cooling water inlet pipe is provided with three cooling water outlets on the front side; the coaxial cable is built in the cooling water inlet pipe, and the cooling water inlet pipe and the extremely fine thermocouple wire are built in the outer sleeve.

2. The temperature-controlled varicose vein electrode with cold circulation according to claim 1, characterized in that: The round-head microwave needle, the polytetrafluoroethylene bushing and the front-end metal ferrule are sprayed with a 0.03mm thick Teflon coating.

3. The temperature-controlled varicose vein electrode with cold circulation according to claim 1, characterized in that: The cooling water inlet pipe is made of a polyfluoro tube, the outer sleeve is made of a PA12 nylon tube, and the length of the outer sleeve exposed outside the handle is 1 meter.

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