Spiral pointed-end radiator for cervical cancer intracavitary thermal therapy

Abstract

The utility model relates to the technical field of thermal therapy radiators, and particularly discloses a spiral tip radiator for cervical cancer intracavity thermal therapy, which comprises a joint, a hard coaxial line, a reflecting disc, a spiral antenna unit and an external sleeve which are coaxially arranged, the connector is used for connecting the hard coaxial line with the microwave generator; the end, away from the connector, of the hard coaxial line extends to the outer side of the connector and is fixed to one side of the reflection disc. The helical antenna unit is arranged on one side, far away from the hard coaxial line, of the reflecting disc; the spiral antenna unit comprises a spiral antenna main body, and a linear connecting end and a linear oscillator which are respectively fixed at two ends of the spiral antenna main body; the linear connecting end penetrates through the reflecting disc and is in contact with the conductive inner core of the hard coaxial line; the linear oscillator extends forwards along the microwave conduction direction; and the outer sleeve sleeves the outer side of the spiral radiator. According to the utility model, a front-end thermal field of the radiator is increased, the tumor of the uterus is fully covered, the better treatment purpose can be achieved, and the helical antenna unit can be replaced according to actual requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of hyperthermia radiators, and particularly to a spiral tip radiator for intracavitary hyperthermia of cervical cancer. Background Technique

[0002] In the prior art, microwave treatment has been widely used in clinical practice. Its principle is that microwaves enter the diseased tissue according to clinical needs. The polar molecules (mainly water molecules) in the tissue rotate at high speed with the microwave frequency and rub against each other to generate heat, changing the microenvironment of the tumor tissue, thus achieving the treatment purpose. The characteristics of this internal heating are: the heating part is uniform, the hemostatic effect is excellent, there is no carbonization, no smoke and smell, and the safety is excellent; at the same time, because microwaves have a certain penetration depth into biological tissues, with the corresponding irradiation treatment probe, it can improve local blood circulation, enhance the metabolic process, strengthen local tissue nutrition, promote the phagocytosis of white blood cells, improve the tissue regeneration ability, and has the effects of spasmolysis, pain relief, promoting the dissipation of inflammation and accelerating the repair of wounds clinically. Due to these characteristics of microwaves, in recent years, microwave therapy instruments, such as microwave hyperthermia radiators for cervical cancer, have been more and more widely used.

[0003] The current microwave hyperthermia radiator for cervical cancer includes a linear radiator, a reflecting disk, a rigid coaxial cable, a connector, etc.; however, due to the fixed length of its linear radiator and the inconvenience of replacement, there may be a problem that the front-end heat field cannot completely cover the tumor during hyperthermia, and a good treatment effect cannot be achieved. Content of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a spiral tip radiator for intracavitary hyperthermia of cervical cancer, which is characterized in that it includes a connector, a rigid coaxial cable, a reflecting disk, a spiral antenna unit and an outer sleeve arranged coaxially;

[0006] The connector is used to connect the rigid coaxial cable with a microwave generator;

[0007] One end of the rigid coaxial cable far from the connector extends to the outside of the connector and is fixed to one side of the reflecting disk;

[0008] The helical antenna unit is provided on the side of the reflector dish away from the rigid coaxial cable; the helical antenna unit includes a helical antenna body, a linear connection end and a linear oscillator respectively fixed at both ends thereof; the reflector dish is a cylindrical barrel, and the conductive inner core of the rigid coaxial cable is wound and connected with the linear connection end in the reaction dish; the linear oscillator extends forward along the microwave conduction direction;

[0009] The outer sleeve is sleeved outside the helical radiator.

[0010] As a preferred technical solution, a first through hole is provided at the center of the joint, and the rigid coaxial cable enters the first through hole from one end of the joint and is signal-connected to a microwave generator connected to the other end of the joint.

[0011] As a preferred technical solution, the overall shape of the antenna body is a conical helix.

[0012] As a preferred technical solution, the antenna body includes 3-10 conical helices with equal pitches.

[0013] As a preferred technical solution, the outer sleeve includes a front outer sleeve and a rear outer sleeve. The front outer sleeve is sleeved outside the reflector dish and the helical antenna unit, and the rear outer sleeve is sleeved on one end of the rigid coaxial cable connected to the reflector dish.

[0014] As a preferred technical solution, the front outer sleeve and the rear outer sleeve are detachably connected.

[0015] As a preferred technical solution, a second through hole for interference fit with the rigid coaxial cable is provided at the center of the rear outer sleeve.

[0016] As a preferred technical solution, one end of the rear outer sleeve connected to the front outer sleeve is radially indented by a certain dimension so that the outer sides of the front outer sleeve and the rear outer sleeve are flush.

[0017] As a preferred technical solution, the front outer sleeve includes a main body outer sleeve provided outside the antenna body and a pointed oscillator outer sleeve matching the linear oscillator.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The treatment principle of the hyperthermia spiral radiator of the present utility model is the same as that of the hyperthermia radiator in the prior art. However, on the basis of the prior art, the present utility model designs the conventional linear radiation end as a replaceable conical spiral antenna unit, and arranges a pointed linear dipole at the front end of the antenna body, thereby increasing the front-end heat field of the radiator, more comprehensively covering the tumors of the uterine body, and achieving a better treatment purpose. In addition, the number of turns of the spiral antenna unit can be increased or decreased according to the actual heating temperature requirements, meeting the treatment needs of different parts; furthermore, the present utility model is provided with a detachable front outer sleeve and a rear outer sleeve, making the replacement of the spiral antenna unit more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is Figure 1 the A-A sectional view of

[0023] Figure 3 is Figure 1 the bottom view of

[0024] In the figure: 1, connector; 2, rigid coaxial cable; 3, reflector disk; 4, spiral antenna unit; 4-1, antenna body; 4-2, linear connection end; 4-3, linear dipole; 5, front outer sleeve; 5-1, main body outer sleeve; 5-2, pointed dipole outer sleeve; 6, rear outer sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be made in conjunction with the drawings.

[0026] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar promotions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When elaborating on the embodiments of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be locally enlarged out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0028] In the present utility model, "front" and "rear" are defined according to the microwave conduction direction.

[0029] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] As Figures 1-3 shown, the present utility model provides a spiral tip radiator for intracavitary hyperthermia of cervical cancer, which includes a connector 1, a rigid coaxial cable 2, a reflector disk 3, a spiral antenna unit 4, and an outer sleeve coaxially arranged.

[0031] The connector 1 is used to connect to a microwave generator. A first through hole is provided at the axis of the connector 1 so that the rigid coaxial cable 2 can enter the first through hole from one end of the connector 1 and be signal-connected to the microwave generator connected to the other end of the connector 1. The other end of the rigid coaxial cable 2 extends to the outside of the connector 1 and is fixed to one side of the reflector disk 3; the reflector disk 3 is a cylindrical barrel structure, and its function is to form a regular radiation beam from the scattered microwaves conducted by the rigid coaxial cable 2 and transmit it to the spiral antenna unit 4, thereby helping to more clearly demarcate the radiation beam and enhance the radiation effect. The reflection principle and material composition of the reflector disk 3 both belong to the prior art, for example, they are both described in the published patents RU2022129363 and DE2348050A1, and will not be elaborated here.

[0032] The spiral antenna unit 4 is arranged on the side of the reflector disk 3 away from the rigid coaxial cable 2; the spiral antenna unit 4 includes a spiral antenna body 4-1 and linear connection ends 4-2 and linear oscillators 4-3 located at both ends thereof respectively; the linear connection end 4-2 is wound together with the conductive inner core of the rigid coaxial cable 2 inside the reaction disk, and the linear oscillator 4-3 extends to the side away from the antenna body 4-1; the antenna body 4-1, the linear connection end 4-2, and the linear oscillator 4-3 are integrally formed and made of copper wire. Preferably, the overall shape of the antenna body 4-1 is a conical spiral.

[0033] Preferably, the antenna body 4-1 includes 3-10 turns of conical spirals with equal pitch; in specific applications, the spiral antenna unit 4 with different numbers of turns can be selected for replacement according to the location of the diseased tissue.

[0034] The external sleeve includes a front outer sleeve 5 and a rear outer sleeve 6, both made of PE plastic that is harmless to the human body. The front outer sleeve 5 is sleeved outside the reflecting disc 3 and the helical antenna unit 4, and the rear outer sleeve 6 is sleeved on one end of the rigid coaxial cable 2 connected to the reflecting disc 3. To facilitate the replacement of the helical antenna unit 4, the front outer sleeve 5 and the rear outer sleeve 6 are provided with a detachable connection. When replacing the helical antenna unit 4, first detach the front outer sleeve 5 from the rear outer sleeve 6. Since the linear connection end 4-2 and the reflecting disc 3 are not fixedly connected, the linear connection end of the helical antenna unit 4 can be pulled out from the reflecting disc 3.

[0035] Preferably, a second through hole that is in interference fit with the rigid coaxial cable 2 is provided at the axis of the rear outer sleeve 6. One end of the rear outer sleeve 6 connected to the front outer sleeve 5 is radially indented by a certain dimension, and an external thread is provided on the outer periphery of the indented part. An internal thread that matches the external thread is provided inside the front outer sleeve 5, so as to facilitate the installation and disassembly of the front outer sleeve 5. The front end of the rear outer sleeve 6 is indented to make the outer sides of the front outer sleeve 5 and the rear outer sleeve 6 flush, so that when the hyperthermia helical tip radiator is placed on the human body, it will not scratch the human body.

[0036] Further preferably, the front outer sleeve 5 includes a main body outer sleeve 5-1 provided outside the antenna main body 4-1 and a tip oscillator outer sleeve 5-2 that matches the linear oscillator.

[0037] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A spiral pointed radiator for intracavitary hyperthermia treatment of cervical cancer, characterized in that: It includes a coaxially arranged joint, a rigid coaxial line, a reflector, a helical antenna unit and an outer sleeve; The connector is used to connect the rigid coaxial line to the microwave generator; One end of the rigid coaxial line away from the joint extends to the outside of the joint and is fixed to one side of the reflector; The helical antenna unit is arranged on a side of the reflector away from the rigid coaxial line; the helical antenna unit comprises a helical antenna body and a linear connection end and a linear oscillator respectively fixed at both ends thereof; the reflector is a cylindrical body, and the conductive inner core of the rigid coaxial line and the linear connection end are wound and connected in the reflector; the linear oscillator is arranged to extend forward along the microwave conduction direction; The outer sleeve is sleeved on the outer side of the spiral radiator.

2. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 1, characterized in that: A first through hole is provided at the axis center of the joint, and a hard coaxial line enters the first through hole from one end of the joint and is signal-connected to a microwave generator connected to the other end of the joint.

3. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 1, characterized in that: The overall shape of the antenna body is a conical spiral.

4. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 1, characterized in that: The antenna body includes 3-10 turns of a conical helix with equal pitch.

5. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 1, characterized in that: The outer sleeve comprises a front outer sleeve and a rear outer sleeve, wherein the front outer sleeve is sleeved on the outer sides of the reflector dish and the helical antenna unit, and the rear outer sleeve is sleeved on one end of the rigid coaxial line connected to the reflector dish.

6. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 5, characterized in that: The front outer jacket and the rear outer jacket are detachably connected.

7. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 5, characterized in that: The axis of the rear outer sleeve is provided with a second through hole which is interference-fitted with the hard coaxial line.

8. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 5, characterized in that: One end of the rear outer casing connected to the front outer casing is radially retracted by a certain dimension so that the outer sides of the front outer casing and the rear outer casing are flush.

9. The spiral tip radiator for intracavitary hyperthermia treatment of cervical cancer according to claim 5, characterized in that: The front outer cover comprises a main body cover arranged outside the antenna main body and a pointed dipole cover matched with the linear dipole.

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