CN103418089A - Indexing head mechanism of high-dose-rate multi-channel after-loading therapy apparatus - Google Patents

Abstract

The invention discloses an indexing head mechanism of a high-dose-rate multi-channel afterloading treatment machine, which comprises a casing, and a vertical mounting plate is fixedly connected inside the casing, and an indexing mechanism parallel to the vertical mounting plate is arranged behind the vertical mounting plate. The indexing plate is driven by a stepping motor, and the stepping motor is fixedly installed on the vertical mounting plate; an S-shaped conduit is fixedly connected to the indexing plate, and the outlet of the S-shaped conduit extends Out of the indexing plate, and opposite to the inlet of the connecting conduit, a plurality of connecting conduits are fixed on the vertical mounting plate, and the outlet of the connecting conduit is connected to the interface of the external treatment conduit. The invention has the advantages of simple structure, convenient manufacture and easy maintenance.

Description

Dividing head mechanism of high dose rate multi-channel afterloading therapy machine

technical field

The invention relates to the field of medical equipment, belongs to the frontier subject intersecting machinery and medicine, and in particular relates to brachytherapy equipment.

Background technique

In the treatment of cancer, in addition to surgery and chemotherapy, radiation therapy is also an important means. Radiation therapy is a treatment method that irradiates tumors with rays of different energies to inhibit and kill cancer cells. According to the radiation method, it can be divided into long-distance irradiation and brachytherapy. Long-distance irradiation, that is, external irradiation, is to use X-ray therapy machines to focus the rays outside the human body for short-term irradiation on the body surface or tumor parts in the body to kill tumor cells. Brachytherapy is to permanently or temporarily introduce high-dose-rate radioactive source particles into the cancerous part of the tumor through external devices, so as to kill tumor cells.

Compared with teletherapy, brachytherapy has the following advantages: 1) Brachytherapy can concentrate high-dose rate rays at the tumor site, while adjacent normal tissues are irradiated with a small dose, thereby protecting normal tissues and reducing tumor risk. The side effects of irradiation; 2) The tumor can be irradiated from multiple directions, thereby improving the effect of killing the tumor; 3) The treatment time is short, and the patient can see a doctor at any time.

The main equipment for brachytherapy is the afterloader, which can insert high-dose micro-radiation sources into cancer cells in the human body through intracavity, tube, interpolation, intraoperative, and application methods. The high-dose-rate radioactive source is fixed at the end of the driving wire by welding, and reaches the tumor treatment point under the guidance of the inner catheter and the outer treatment catheter. The working process of the afterinstallation machine is to export the radiation source smoothly, and then select different treatment channels under the action of the dividing head. Through the use of after-installation machines from different manufacturers in major hospitals, we learned that almost all the after-installation machines of various manufacturers have different problems in the actual use process, such as inaccurate selection of treatment channels, and unsmooth transmission of radioactive sources.

Contents of the invention

In order to solve the technical problems in the known technology, the present invention provides a high dose rate multi-channel afterloading treatment machine indexing head mechanism with simple structure.

The technical solution adopted by the present invention to solve the technical problems in the known technology is: a high-dose-rate multi-channel afterloading treatment machine indexing head mechanism, including a casing, a vertical mounting plate is fixed inside the casing, and the The rear of the vertical mounting plate is provided with an indexing plate parallel to it, and the indexing plate is driven by a stepping motor, and the stepping motor is fixedly mounted on the vertical mounting plate; An S-shaped conduit is connected, the outlet of the S-shaped conduit protrudes from the indexing plate, and is opposite to the inlet of the connecting conduit, and a plurality of connecting conduits are fixed on the vertical mounting plate, and the connecting conduits The outlet is connected to an external therapy catheter interface.

An electromagnet is fixed on the vertical mounting plate, and a push-pull rod slidably connected with the electromagnet is arranged on the electromagnet; a positioning hole adapted to the push-pull rod is arranged on the said index plate.

The advantages and positive effects of the present invention are: the stepper motor is installed in front of the vertical mounting plate, which makes the internal structure more reasonable, can realize the distribution of channels on the entire circumference, and is convenient for treatment and use. By setting evenly distributed positioning holes on the indexing plate and cooperating with the push-pull rod driven by the electromagnet to limit the position, the precise positioning of the indexing plate is realized. The invention has the advantages of simple structure, convenient manufacture and easy maintenance.

Description of drawings

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

Fig. 2 is the structural representation of index plate and S-type conduit of the present invention;

FIG. 3 is a side view of FIG. 2 .

In the figure: 1. shell, 2. indexing plate, 21. positioning hole, 3. S-shaped conduit, 4. push-pull rod, 5. vertical mounting plate, 6. electromagnet, 7. connecting conduit, 8. stepping Motor, 9, treatment catheter interface.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Figures 1 to 3, a high-dose-rate multi-channel afterloading treatment machine indexing head mechanism, including a housing 1, a vertical mounting plate 5 is fixed in the housing 1, and the rear of the vertical mounting plate 5 is provided with a Parallel indexing disc 2, indexing disc 2 is driven by stepping motor 8, and stepping motor 8 is fixedly installed on the vertical mounting plate 5. An S-shaped conduit 3 is fixedly connected to the indexing plate 2, and the outlet of the S-shaped conduit 3 stretches out from the indexing plate 2, and is opposite to the entrance of the connecting conduit 7, and a plurality of connecting conduits 7 are fixed on the vertical mounting plate 5, connected The outlet of the catheter 7 is connected with the external treatment catheter interface 9, an electromagnet 6 is fixed on the vertical mounting plate 5, a push-pull rod 4 slidingly connected with it is provided on the electromagnet 6, and a push-pull rod 4 connected with the push-pull rod is provided on the index plate 2. 4 Adaptive positioning holes 21.

Working principle of the present invention:

When the after-installation machine is working, the stepper motor accepts the command, and at the same time the electromagnet is energized, the push-pull rod retracts, and breaks away from the positioning hole. At this time, the stepper motor drives the indexing plate to rotate a set angle, so that the outlet of the S-shaped elbow is aligned with the vertical The entrance of the connecting conduit on the installation plate forms a specific channel. At this time, the electromagnet is powered off, the end of the push-pull rod protrudes into the positioning hole, the indexing plate is locked and cannot be rotated, and the radioactive source is introduced through the formed channel to set the tumor treatment. point for treatment. After the treatment of a single point is completed, the radiation source is retracted into the protective tank by the driving motor through the steel wire, and then the above steps are repeated to continue the treatment of the next treatment point until the treatment of all treatment points is completed.

The entrance of the S-shaped catheter is connected to the radiation source protection tank, and the center of the end surface of the S-shaped catheter inlet is concentric with the center of the indexing plate, so as to realize the smooth rotation of the S-shaped catheter without twisting.

Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art Under the enlightenment of the present invention, people can also make many forms without departing from the purpose of the present invention and the scope of protection of the claims, and these all belong to the protection scope of the present invention.

Claims (2)

1. a high dose rate multichannel afterloader dividing head mechanism, it is characterized in that, comprise shell, be connected with vertical installing plate in described shell, the rear of described vertical installing plate is provided with index dial in parallel, described index dial is by step motor drive, and described motor is fixedly mounted on described vertical installing plate; Be connected with S type conduit on described index dial, described index dial is stretched out in the outlet of described S type conduit, and relative with the entrance of connecting duct, many described connecting ducts are fixed on described vertical installing plate, and the outlet of described connecting duct is connected with the external treatment catheter interface.

2. high dose rate multichannel afterloader dividing head according to claim 1 mechanism, is characterized in that, on described vertical installing plate, is fixed with electric magnet, is provided with the push-pull bar be slidably connected with it on described electric magnet; Described index dial is provided with the locating hole with described push-pull bar adaptation.

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