CN108523990B - A microwave ablation apparatus for treating uterine fibroids - Google Patents

Abstract

The invention discloses a microwave ablation therapeutic apparatus for treating hysteromyoma, which mainly comprises a microwave ablation antenna assembly and a microwave generator, wherein the antenna assembly is connected to the microwave generator through a cable; the antenna assembly mainly comprises a first antenna probe, a second antenna probe, a first inner conductor, a second inner conductor and a handle, wherein a display screen, a first jack and a second jack are arranged on the microwave generator, and the second jack is connected with the brake through a third cable. According to the microwave ablation therapeutic apparatus for treating hysteromyoma, the microwave ablation antenna assembly is composed of the two antenna probes side by side, the two antenna probes enter the uterus from the vagina or the uterine cavity, the length is adjustable, the two groups of antenna probes can work simultaneously, the working speed is accelerated, the three-dimensional attempt can be displayed through the terminal interface, the visualization degree is high, the operation is convenient and fast, the controllability is good, the working reliability is high, and the therapeutic effect is greatly improved.

Description

A microwave ablation apparatus for treating uterine fibroids

technical field

The invention relates to the technical field of medical devices for internal medicine, in particular to a microwave ablation therapeutic apparatus for treating uterine fibroids.

Background technique

Uterine fibroids are the most common benign tumors in the female reproductive organs, and are also one of the most common tumors in the human body. Because uterine fibroids are mainly formed by the proliferation of uterine smooth muscle cells, a small amount of fibrous connective tissue exists as a kind of supporting tissue, so it is more accurate to call uterine fibroids. referred to as uterine fibroids. Most patients are asymptomatic and are only occasionally detected during pelvic examination or ultrasonography. If there are symptoms, it is closely related to the growth location, speed, degeneration and complications of the fibroids, but is relatively less related to the size and number of the fibroids. People with multiple subserosal fibroids are not necessarily asymptomatic, and one smaller submucosal fibroids often causes irregular vaginal bleeding or menorrhagia.

The clinical treatment needs of uterine fibroids are very extensive. Surgical removal of fibroids or uterus is still a common treatment method, but it has the disadvantages of being invasive or unable to preserve the uterus. With the increasing maturity of minimally invasive treatment technology, especially today when the country's policy on double only two children is about to be opened, it is of great significance to protect the uterus. Transvaginal microwave ablation technology has been successfully applied in the field of uterine fibroids treatment, but how to combine the advantages of microwave ablation technology needs to be further studied. Although microwave ablation has been initially applied in the treatment of uterine fibroids, the existing microwave ablation antenna is not conducive to the treatment from the uterine surface through vagina. Intestinal and bladder injury, and the treatment speed is slow and the visualization degree is low.

The principle of microwave treatment of diseases is more complicated, mainly through thermal effect and biological effect. Due to the existence of magnetoresistance between polar molecules to generate resistance to oscillation, microwave energy is consumed to generate heat, and the heat is used to achieve the purpose of curing diseases, which is the thermal effect of microwave therapy. The characteristics of microwave therapy use high-frequency local radiation, and a certain therapeutic effect can be achieved under the condition of small microwave power output. Microwave energy can be absorbed by tissue to generate internal heat source, and the effective depth of action on human tissue is 5-7CM. The thermal effect of microwave on human tissue is high, penetrating power is strong, and it has the advantages of generating heat inside and outside at the same time.

A large number of studies at home and abroad have proved that tumor cells will shrink and die at a temperature of 42.5-43.5 °C. After the emergence of microwave heating, there are two ways to treat tumors: one is to irradiate microwaves from outside the body; the other is to send microwaves to the patient's body to directly irradiate the tumor. These two treatment methods can be selected according to the lesion site. When microwaves act on body tissues, they can cause high-frequency vibrations of ions, water molecules and dipoles in tissue cells. When the microwave output energy is low and the radiant heat energy is low, it can enhance local blood circulation, speed up local metabolism, and enhance local immunity. Therefore, it can effectively improve local blood circulation, promote edema absorption, reduce inflammation and relieve pain.

Microwave ablation for uterine fibroids has the following advantages: preserves the uterus without destroying the pelvic physiological structure, and after treatment, uterine fibroids are inactivated and significantly reduced until disappearance. There was no significant effect on ovarian function, and the patient's menstrual cycle was normal in the month after treatment. There is no need for surgery. During the treatment, the lesion is punctured from the vagina through the uterus, and a microwave needle is implanted. The operation is simple, rapid, effective, safe and less traumatic. The hospital stay is short, only 1-2 days.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to provide a microwave ablation therapy apparatus for treating uterine fibroids, which can perform microwave ablation therapy for uterine fibroids more accurately and quickly, and has a high degree of visualization.

The technical scheme of the present invention is: a microwave ablation therapeutic apparatus for treating uterine fibroids, which mainly includes a microwave ablation antenna assembly and a microwave generator, the antenna assembly is connected to the microwave generator through a cable 1; the antenna assembly mainly includes an antenna probe 1. Antenna probe 2, inner conductor 1, inner conductor 2, handle, the antenna probe 1 is arranged on the top of the inner conductor 1, and the antenna probe 2 is placed on the top of the inner conductor 2, so the The inner conductor 1 is wrapped with the outer conductor 1, the inner conductor 2 is wrapped with the outer conductor 2, and there is a certain gap between the inner conductor 1 and the outer conductor 1 and between the inner conductor 2 and the outer conductor 2. A radiation detector 1 is arranged on the conductor 1, and a radiation detector 2 is arranged on the outer conductor 2. The lengths of the outer conductor 1 and the outer conductor 2 can be adjusted by a length adjuster. The outer conductor 1 and the outer conductor 2 One end away from the antenna probe 1 and the antenna probe 2 is connected to the handle, the upper end of the handle is provided with a hub, the upper end of the hub is connected to the cable 1 and the cable 2, and also connected to the cooling liquid inflow port and the cooling liquid outflow port, so The cooling liquid inflow port is connected to the pump through the first conduit, the cooling liquid outflow port is connected to the pump through the second conduit, the pump is connected to the cooling liquid container through the hose, and the cooling liquid in the cooling liquid container is pumped into the first conduit through the pump. , enter the gap between inner conductor 1 and outer conductor 1 and between inner conductor 2 and outer conductor 2 through the cooling liquid inflow port, and then flow out from the cooling liquid outflow port, and return through the conduit 2; the other end of the cable 2 is connected to To the terminal interface, a 360° high-definition micro-hole camera is installed on both ends of the outer conductor 1 and the outer conductor 2 near the antenna probe 1 and the antenna probe 2, and the camera is connected to the cable 2 through a data line; the microwave generator is provided with There are a display screen, a jack 1 and a jack 2, the cable 1 is provided with a plug, and the plug is inserted into the jack 1 to be connected to the microwave generator; the jack 2 is connected to the brake through the cable 3.

Further, in the above solution, the handle is equipped with an ablation system control button, which is more convenient to operate.

Further, in the above solution, the first end of the cable close to the hub is provided with a separator.

Further, the separator is a catheter-inserted microwave energy delivery device, which is mainly composed of a circuit board and a shielded connector, and has the function of preventing electromagnetic interference radiation from entering or preventing leakage.

Furthermore, a filter is also provided between the divider and the handle to eliminate interference.

Further, in the above solution, the first antenna probe and the second antenna probe are tapered tips, and the surface of them is coated.

Further, the first antenna probe and the second antenna probe are made of various heat-resistant materials suitable for penetrating human tissue, preferably metals (such as stainless steel) and various thermoplastic materials (such as polyetherimide). and polyamide thermoplastic resins).

Further, the composition of the coating is: polytetrafluoroethylene (PTFE), polyvinyl chloride and parylene, and the three are in a mass ratio of a mixture of 5:1:2.

Further, the cooling liquid carried in the cooling liquid container is deionized water or brine with a mass concentration of 0.02-0.5%. The circulation of the cooling liquid can ensure that the antenna assembly 1 operates at a higher power.

Further, the inner conductor 1, inner conductor 2, outer conductor 1, outer conductor 2 can be made of copper, gold, stainless steel or other conductive metals with similar conductivity values, and other conductive materials can also be plated on the metal surface to improve its properties, such as increasing electrical conductivity or reducing energy losses.

The beneficial effects of the present invention are as follows: a microwave ablation therapeutic apparatus for treating uterine fibroids designed by the present invention, the microwave ablation antenna assembly is composed of two side-by-side antenna probes, which enter the uterus from the vagina or the uterine cavity, and the length can be adjusted Two sets of antenna probes can work at the same time, greatly speeding up the work, and can display the three-dimensional image through the terminal interface, with a high degree of visualization, which can be controlled by the control button of the ablation system on the handle and the brake connected to the microwave generator. The work of the microwave ablation antenna assembly and the microwave generator is easy to operate. The display screen of the microwave generator can display various working parameters of the microwave ablation antenna assembly and the microwave generator. The device can prevent electromagnetic interference, eliminate adverse effects, ensure the working reliability of the microwave ablation antenna assembly, and greatly improve the treatment effect.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of a microwave ablation antenna assembly;

Fig. 3 is the circuit diagram of the filter;

Among them, 1-microwave ablation antenna assembly, 10-length regulator, 11a-antenna probe one, 11b-antenna probe two, 12a-outer conductor one, 12b-outer conductor two, 13a-radiation detector one, 13b- Radiation detector two, 14a-inner conductor one, 14b-inner conductor two, 15-handle, 16-body cavity, 17-hub, 18-divider, 19-cable one, 20-plug, 2-microwave generator, 21 -Display, 22-jack one, 23-jack two, 3-brake, 31-cable three, 4-coolant container, 41-pump, 42-conduit one, 43-conduit two, 421-coolant inflow port, 431-coolant outflow port, 45-hose, 5-terminal interface, 51-cable two.

Detailed ways

Below in conjunction with specific embodiment, the present invention is further described in detail:

A microwave ablation therapeutic apparatus for treating uterine fibroids mainly includes a microwave ablation antenna assembly 1 and a microwave generator 2, the antenna assembly 1 is connected to the microwave generator 2 through a cable-19; the antenna assembly 1 mainly includes an antenna probe-1 11a, antenna probe two 11b, inner conductor one 14a, inner conductor two 14b, handle 15, the antenna probe one 11a and the antenna probe two 11b are made of polyetherimide, the antenna probe one 11a is arranged on the top of the inner conductor 1 14a, the antenna probe 2 11b is arranged on the top of the inner conductor 2 14b, the antenna probe 1 11a and the antenna probe 2 11b are tapered tips, and their surfaces are coated with a coating 111. The composition of the coating layer 111 is: polytetrafluoroethylene (PTFE), polyvinyl chloride and parylene, the mixture of the three in a mass ratio of 5:1:2; the inner conductor one 14a The outer conductor is wrapped with outer conductor one 12a, and the inner conductor two 14b is wrapped with outer conductor two 12b. There is a certain gap between the inner conductor 1 14a and the outer conductor 12a and between the inner conductor 2 14b and the outer conductor 2 12b, the outer conductor 1 12a is provided with a radiation detector 1 13a, and the outer conductor 2 12b A radiation detector 2 13b is provided, the lengths of the outer conductor 1 12a and the outer conductor 2 12b can be adjusted by the length adjuster 10, and the outer conductor 1 12a and the outer conductor 2 12b are far away from the antenna probe 11a and the antenna probe. One end of the second 11b is connected to the handle 15, and the handle 15 is equipped with an ablation system control button, which makes the operation more convenient; the upper end of the handle 15 is provided with a hub 17, and the upper end of the hub 17 is connected to the cable one 19 and the cable two 51, and the cable one 19 One end near the hub 17 is provided with a separator 18. The separator 18 is a conduit-inserted microwave energy delivery device, which is mainly composed of a circuit board and a shielded connector, and has the function of preventing electromagnetic interference radiation from entering or preventing leakage. The separator 18 is connected to the handle. There is also a filter between 15 and 15 to eliminate interference. The hub 17 is also connected to the cooling liquid inflow port 421 and the cooling liquid outflow port 431. The cooling liquid inflow port 421 is connected to the pump 41 through the conduit one 42. The cooling liquid The outflow port 431 is connected to the pump 41 through the second conduit 43, the pump 41 is connected to the cooling liquid container 4 through the hose 45, and the cooling liquid loaded in the cooling liquid container 4 is: deionized water or the mass concentration is 0.02-0.5% The circulation of the cooling liquid can ensure that the antenna assembly 1 works at a higher power. The cooling liquid in the cooling liquid container 4 is pumped into the conduit one 42 through the pump 41, and enters the inner conductor one 14a and the outer conductor through the cooling liquid inflow port 421. The gap between conductor one 12a and the gap between inner conductor two 14b and outer conductor two 12b flows out from the cooling liquid outflow port 431 and returns through the conduit two 43; the other end of the cable two 51 is connected to the terminal interface 5, and the outer Conductor one 12a and outer conductor two A 360° high-definition micro-hole camera is installed on one end of 12b close to the first antenna probe 11a and the second antenna probe 11b, and the camera is connected to the second cable 51 through a data line; the microwave generator 2 is provided with a display screen 21, a jack One 22. Jack two 23, a plug 20 is installed on the cable one 19, the plug 20 is inserted into the jack one 22 to be connected to the microwave generator 2; the jack two 23 is connected through the cable three 31 brake 3. The microwave ablation antenna assembly of the microwave ablation therapy instrument is composed of two side-by-side antenna probes, which enter the uterus from the vagina or the uterine cavity, and the length is adjustable. The two sets of antenna probes can work at the same time, greatly speeding up the work. The three-dimensional image can be displayed through the terminal interface, with a high degree of visualization. The operation of the microwave ablation antenna assembly and the microwave generator can be controlled respectively through the ablation system control button on the handle and the brake connected to the microwave generator. Various working parameters of the microwave ablation antenna assembly and the microwave generator can be displayed on the display screen, and the controllability is good, and there are separators and filters, which can prevent electromagnetic interference, eliminate adverse effects, and ensure the work of the microwave ablation antenna assembly. Reliability, greatly improve the treatment effect.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present invention.

Claims (9)

1. A microwave ablation therapeutic apparatus for treating hysteromyoma is characterized by comprising a microwave ablation antenna assembly (1) and a microwave generator (2), wherein the antenna assembly (1) is connected to the microwave generator (2) through a first cable (19); the antenna assembly (1) mainly comprises a first antenna probe (11a), a second antenna probe (11b), a first inner conductor (14a), a second inner conductor (14b) and a handle (15), wherein the first antenna probe (11a) is arranged at the top end of the first inner conductor (14a), the second antenna probe (11b) is arranged at the top end of the second inner conductor (14b), the first inner conductor (14a) is wrapped by the first outer conductor (12a), the second inner conductor (14b) is wrapped by the second outer conductor (12b), a certain gap is formed between the first inner conductor (14a) and the first outer conductor (12a) and between the second inner conductor (14b) and the second outer conductor (12b), a first radiation detector (13a) is arranged on the first outer conductor (12a), a second radiation detector (13b) is arranged on the second outer conductor (12b), and the lengths of the first outer conductor (12a) and the second outer conductor (12b) can be adjusted through a length adjuster (10) The section comprises a first outer conductor (12a) and a second outer conductor (12b), wherein one ends of the first outer conductor (12a) and the second outer conductor (12b), which are far away from the first antenna probe (11a) and the second antenna probe (11b), are connected to a handle (15), a hub (17) is arranged at the upper end of the handle (15), a first cable (19) and a second cable (51) are connected to the upper end of the hub (17), a first cooling liquid inflow port (421) and a second cooling liquid outflow port (431) are also connected to the upper end of the handle, the first cooling liquid inflow port (421) is connected to a pump (41) through a first conduit (42), the second cooling liquid outflow port (431) is connected to the pump (41) through a second conduit (43), the pump (41) is connected to a cooling liquid container (4) through a hose (45), cooling liquid in the cooling liquid container (4) is pumped into the first conduit (42) through the pump (41), and enters gaps between the first inner conductor (14a) and the first outer conductor (12a, then flows out from the cooling liquid outlet port (431) and flows back through a second guide pipe (43); the other end of the second cable (51) is connected to the terminal interface (5), one ends, close to the first antenna probe (11a) and the second antenna probe (11b), of the first outer conductor (12a) and the second outer conductor (12b) are respectively provided with a 360-degree high-definition micropore camera, and the cameras are connected to the second cable (51) through data lines; a display screen (21), a first jack (22) and a second jack (23) are arranged on the microwave generator (2), a plug (20) is mounted on the first cable (19), and the plug (20) is inserted into the first jack (22) so as to be connected to the microwave generator (2); the second jack (23) is connected with the brake (3) through a third cable (31).

2. The microwave ablation therapeutic apparatus for treating hysteromyoma of claim 1, wherein an ablation system control button is installed in the handle (15).

3. The microwave ablation therapeutic apparatus for treating hysteromyoma of claim 1, wherein one end of the first cable (19) near the hub (17) is provided with a separator (18).

4. A microwave ablation treatment apparatus for treating uterine fibroids according to claim 3, wherein said divider (18) is a catheter-inserted microwave energy delivery device consisting essentially of a circuit board and a shielded connector.

5. A microwave ablation treatment apparatus for treating uterine fibroids according to claim 3, wherein a filter is further provided between the divider (18) and the handle (15).

6. The microwave ablation therapeutic apparatus for treating hysteromyoma of claim 1, wherein the first antenna probe (11a) and the second antenna probe (11b) are tapered tips with a coating (111) on the surface.

7. The microwave ablation therapeutic apparatus for treating hysteromyoma of claim 6, wherein said first antenna probe (11a) and second antenna probe (11b) are made of various heat-resistant materials suitable for penetrating human tissues.

8. The microwave ablation treatment apparatus for treating uterine fibroids of claim 7, wherein said heat resistant material comprises a metal and a thermoplastic material, said metal material comprising stainless steel and said thermoplastic material comprising polyetherimide and polyamide thermoplastic resins.

9. The microwave ablation therapeutic apparatus for treating hysteromyoma of claim 6, wherein the coating (111) comprises the following components: polytetrafluoroethylene (PTFE), polyvinyl chloride and parylene C, and the mixture is composed of the PTFE, the polyvinyl chloride and the parylene C according to the mass ratio of 5:1: 2.

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