CN117653928A - Medical electronic linear accelerator treatment bed and control method thereof - Google Patents

Abstract

The invention discloses a medical electronic linear accelerator treatment bed and a control method thereof, wherein the medical electronic linear accelerator treatment bed comprises: a main treatment couch mounted on a first side of the medical electronic linear accelerator; the auxiliary treatment bed is arranged on the second side of the medical electronic linear accelerator, and the first side and the second side are respectively positioned on two opposite sides of the medical electronic linear accelerator; the main treatment bed comprises a main treatment bed board, the auxiliary treatment bed comprises an auxiliary treatment bed board, the main treatment bed board and/or the auxiliary treatment bed board can slide back and forth along a first direction close to/far from the medical electronic linear accelerator, and the main treatment bed board and/or the auxiliary treatment bed board is controlled to slide to the isocenter position of the medical electronic linear accelerator so as to be in butt joint with the auxiliary treatment bed board/the main treatment bed board. When the invention is used for radiotherapy, the main treatment bed board and the auxiliary treatment bed are in butt joint connection, so that the problem of error caused by sinking of the cantilever structure of the single treatment bed is effectively solved.

Description

Medical electronic linear accelerator treatment bed and control method thereof

Technical Field

The invention relates to the technical field of mechanical structures of medical linear accelerators, in particular to a medical electronic linear accelerator treatment bed and a control method thereof.

Background

The medical electron linear accelerator is a medical instrument used for the radiotherapy of tumor or other focus of a patient, and the focus of the patient is positioned by the accelerator rotation during the radiotherapy process, so that the radiation beam is aimed at the focus of the patient.

In the treatment process, a focus part of a patient is placed at the isocenter of a medical electronic linear accelerator through a treatment couch, so that accelerator rays can be accurately irradiated at the focus part of the patient, damage to healthy parts of the patient is reduced, high positioning precision is required when the treatment couch is placed, the treatment couch is in a cantilever structure in the market at present, and due to the rigidity problem of the treatment couch, the treatment couch is deformed at the isocenter in a sinking mode to cause errors, so that the effect of radiotherapy is affected.

In addition, with the development of three-dimensional intensity modulated radiotherapy technology, the rotation treatment requirement of medical electronic linear accelerators is increasingly common, and when rays pass through the rear side and the inclined rear side of a treatment bed, the treatment bed can attenuate the irradiation dose of the rays, so that the focus part of a patient cannot obtain accurate radiotherapy dose.

In view of this, the present invention is specifically proposed.

Disclosure of Invention

In order to solve the technical problems, the invention provides a medical electronic linear accelerator treatment bed and a control method thereof, which can effectively reduce sedimentation errors of the treatment bed and further eliminate attenuation influence of the treatment bed on rays.

Specifically, the following technical scheme is adopted:

a medical electron linac treatment couch comprising:

a main treatment couch mounted on a first side of the medical electronic linear accelerator;

the auxiliary treatment bed is arranged on the second side of the medical electronic linear accelerator, and the first side and the second side are respectively positioned on two opposite sides of the medical electronic linear accelerator;

the main treatment bed comprises a main treatment bed board, the auxiliary treatment bed comprises an auxiliary treatment bed board, the main treatment bed board and/or the auxiliary treatment bed board can slide back and forth along a first direction close to/far from the medical electronic linear accelerator, and the main treatment bed board and/or the auxiliary treatment bed board is controlled to slide to the isocenter position of the medical electronic linear accelerator so as to be in butt joint with the auxiliary treatment bed board/the main treatment bed board.

As an alternative embodiment of the present invention, the main therapeutic bed includes a main therapeutic bed base, the main therapeutic bed board is slidably mounted on the main therapeutic bed base in a first direction, the auxiliary therapeutic bed includes an auxiliary therapeutic bed base, and the auxiliary therapeutic bed board is slidably mounted on the auxiliary therapeutic bed base in the first direction;

the main treatment bed board is provided with a first telescopic rod mechanism, and/or the auxiliary treatment bed is provided with a second telescopic rod mechanism, and after the main treatment bed board and the auxiliary treatment bed board are controlled to slide to the isocenter of the medical electronic linear accelerator, the auxiliary treatment bed board is inserted into the main treatment bed board through the first telescopic rod mechanism to be in butt joint, and/or the main treatment bed board is inserted into the second telescopic rod mechanism to be in butt joint.

As an optional embodiment of the invention, the main therapeutic bed board comprises a main bed board and a plurality of sectional bed boards, the first telescopic rod mechanism is arranged at the bottom of the main bed board and comprises a first motor and a first screw rod connected with a motor shaft of the first motor, first screw rod nuts penetrating through the sectional bed boards are respectively arranged in the sectional bed boards, and the first screw rod sequentially penetrates through the first screw rod nuts of the sectional bed boards;

the second telescopic rod mechanism comprises a second motor and a second lead screw connected with a motor shaft of the second motor, and a second lead screw nut penetrating through the segmented bed board is respectively arranged in each segmented bed board;

after the main treatment bed board is controlled to slide to the isocenter position of the medical electronic linear accelerator, the second lead screw of the second telescopic rod mechanism is controlled to extend out to be in butt joint with the second lead screw nut on the segmented bed board, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to reversely operate, the segmented bed board is gradually slid from the main bed board side to the auxiliary treatment bed board side, and the first telescopic rod mechanism and the second telescopic rod mechanism stop operating until the hollowed-out interval formed between the segmented bed boards is opposite to the focus position of a patient.

As an alternative embodiment of the invention, the first telescopic rod mechanisms comprise two first screw nuts which are respectively arranged on two sides of the bottom of the main bed board, and the two first screw nuts are respectively arranged on the segmented bed board corresponding to the two first telescopic rod mechanisms; the two second telescopic rod mechanisms are respectively arranged at two sides of the bottom of the auxiliary treatment bed, and two second screw nuts are respectively arranged on the segmented bed board corresponding to the two second telescopic rod mechanisms; the distance between the two first telescopic mechanisms is unequal to the distance between the two second telescopic mechanisms, the distance between the two first screw nuts is equal to the distance between the two first telescopic mechanisms, and the distance between the two second screw nuts is equal to the distance between the two second telescopic mechanisms.

As an optional implementation mode of the invention, the length of the main therapeutic bed board formed by jointly splicing the main bed board and the plurality of sectional bed boards is L0, the total length of tightly spliced sectional bed boards is L1, and L1 is more than or equal to L0/2.

As an alternative embodiment of the present invention, the main treatment couch base is mounted on the first side of the medical electronic linac, the main treatment couch base can reciprocally slide along a second direction perpendicular to the first direction, and the auxiliary treatment couch base is mounted on the second side of the medical electronic linac, and the auxiliary treatment couch base can reciprocally slide along a second direction perpendicular to the first direction;

the focus of the patient is adjusted to be positioned at the isocenter of the medical electronic linear accelerator by controlling the movement of the main treatment bed base and the main treatment bed board, the auxiliary treatment bed board is adjusted to be in butt joint with the main treatment bed board by controlling the movement of the auxiliary treatment bed base and the auxiliary treatment bed board, and the hollowed-out interval formed by sliding the sectional bed board is adjusted to be opposite to the focus of the patient.

As an alternative embodiment of the invention, the main treatment bed base comprises a main bottom plate, a main support plate and a main support rod connecting the main bottom plate and the main support plate, wherein a first longitudinal guide rail extending along a first direction is arranged on the main support plate, and the main bed plate is slidably arranged on the first longitudinal guide rail;

the main bottom plate is provided with a first transverse guide rail extending along a second direction perpendicular to the first direction, and the main bottom plate is slidably arranged on the medical electronic linear accelerator through the first transverse guide rail;

optionally, the main supporting rod is an electric push rod capable of ascending and descending.

As an alternative embodiment of the present invention, the sub-therapeutic bed base includes a sub-base plate, a sub-support plate, and a sub-support rod connecting the sub-base plate and the sub-support plate, wherein a second longitudinal rail extending along a first direction is provided on the sub-support plate, and the sub-bed plate is slidably mounted on the second longitudinal rail;

the auxiliary bottom plate is provided with a second transverse guide rail extending along a second direction perpendicular to the first direction, and the auxiliary bottom plate is slidably arranged on the medical electronic linear accelerator through the second transverse guide rail;

optionally, the auxiliary supporting rod is an electric push rod capable of ascending and descending.

The invention also provides a control method of the medical electronic linear accelerator treatment bed, which comprises the following steps:

and controlling the main treatment bed board and/or the auxiliary treatment bed board to slide to the isocenter position of the medical electronic linear accelerator, and performing butt joint connection with the auxiliary treatment bed board/main treatment bed board.

As an alternative embodiment of the present invention, a method for controlling a medical electronic linac treatment couch of the present invention includes:

controlling the movements of the main treatment bed base and the main treatment bed board, and adjusting the focus of the patient to be positioned at the isocenter of the medical electronic linear accelerator;

determining the space S between the auxiliary treatment bed board and the main treatment bed board according to the focus of the patient;

controlling the movement of the auxiliary treatment bed base and the auxiliary treatment bed board, adjusting the interval between the auxiliary treatment bed board and the main treatment bed board to be S, and controlling the second lead screw of the second telescopic rod mechanism to extend out and be in butt joint with the second lead screw nut on the sectional bed board;

according to the position of the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to reversely operate, the sectional bed boards are gradually slid from the main bed board side to the auxiliary treatment bed board side, and after the hollowed-out intervals formed between the sectional bed boards are opposite to the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to stop operating.

Compared with the prior art, the invention has the beneficial effects that:

the medical electronic linear accelerator treatment bed is assembled by the main treatment bed and the auxiliary treatment bed which are positioned at the two sides of the medical electronic linear accelerator, and when radiation treatment is carried out, the main treatment bed plate and the auxiliary treatment bed are in butt joint connection to form the treatment bed which is supported at the two sides of the medical electronic linear accelerator, so that the problem of errors caused by sinking of a cantilever structure of the single treatment bed is effectively solved.

According to the invention, the first telescopic rod mechanism in the main treatment bed board and the second telescopic rod mechanism in the auxiliary treatment bed board are controlled to reversely operate, and the sectional bed boards are gradually slid from the main bed board side to the auxiliary treatment bed board side until the hollowed-out intervals formed between the sectional bed boards are opposite to the focus positions of the patient, so that a non-shielding interval can be formed at the focus positions of the patient, the problem of shielding of the treatment bed board on rays is effectively solved, and the patient can obtain more accurate ray dosage.

Description of the drawings:

FIG. 1 is a view showing the state of use of a medical electron linac treatment couch according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a medical electronic linear accelerator treatment bed according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a main deck and a sub deck according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a sectional bed board according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, a medical electron linac treatment couch according to the present embodiment includes:

a main treatment couch 200 mounted to a first side of the medical electronic linac 100;

a sub-therapeutic bed 300 mounted to a second side of the medical electron linac 100, the first and second sides being located on opposite sides of the medical electron linac 100, respectively;

the main treatment couch 200 comprises a main treatment couch plate 201, the auxiliary treatment couch 300 comprises an auxiliary treatment couch plate 301, the main treatment couch plate 201 and/or the auxiliary treatment couch plate 301 can slide back and forth along a first direction (such as the F1 direction in fig. 1) approaching to/separating from the medical electronic linear accelerator 1000, and the main treatment couch plate 201 and/or the auxiliary treatment couch plate 301 are controlled to slide to the isocenter position of the medical electronic linear accelerator 100 to be in butt joint with the auxiliary treatment couch plate 301/the main treatment couch plate 201.

The medical electronic linear accelerator treatment bed of the embodiment is formed by assembling the main treatment bed 200 and the auxiliary treatment bed 300 which are positioned at two sides of the medical electronic linear accelerator 100, and when radiation treatment is carried out, the main treatment bed plate 201 and the auxiliary treatment bed 300 are in butt joint connection to form the treatment bed supported at two sides of the medical electronic linear accelerator 100, so that the problem of error caused by sinking of a cantilever structure of the single treatment bed is effectively solved.

Specifically, the main treatment couch 201 of the present embodiment may slide reciprocally along the first direction (such as the F1 direction in fig. 1) approaching/moving away from the medical electronic linac 1000, and the auxiliary treatment couch 301 is in a fixed position, and is connected in a butt joint by sliding the main treatment couch 201 to the auxiliary treatment couch 301.

Alternatively, the auxiliary treatment couch 301 of the present embodiment may slide reciprocally along the first direction (such as the F1 direction in fig. 1) approaching/moving away from the medical electronic linear accelerator 1000, and the main treatment couch 201 is in a fixed position, and the auxiliary treatment couch 301 slides to the main treatment couch 201 for docking connection.

Still alternatively, the main treatment couch 201 and the auxiliary treatment couch 301 of the present embodiment may slide back and forth along the first direction (e.g., the F1 direction in fig. 1) approaching/separating from the medical electronic linac 1000, and the main treatment couch 201 and the auxiliary treatment couch 301 are controlled to slide to the isocenter of the medical electronic linac 100 for butt connection.

Further, in order to realize the butt connection between the main therapeutic bed 201 and the auxiliary therapeutic bed 301, referring to fig. 1 to 3, the main therapeutic bed 200 of this embodiment includes a main therapeutic bed base 202, the main therapeutic bed 201 is reciprocally slidably mounted on the main therapeutic bed base 202 along a first direction (e.g. F1 direction in fig. 1), the auxiliary therapeutic bed 300 includes an auxiliary therapeutic bed base 302, and the auxiliary therapeutic bed 301 is reciprocally slidably mounted on the auxiliary therapeutic bed base 302 along the first direction (e.g. F1 direction in fig. 1).

In this embodiment, the first telescopic rod mechanism 400 is installed on the main therapeutic bed board 201, and/or the second telescopic rod mechanism 500 is installed on the auxiliary therapeutic bed 301, so that after the main therapeutic bed board 201 and the auxiliary therapeutic bed board 301 are controlled to slide to the isocenter of the medical electronic linear accelerator 100, the auxiliary therapeutic bed board 301 is inserted into the main therapeutic bed board 201 to perform butt joint connection through the first telescopic rod mechanism 400, and/or the second telescopic rod mechanism 500 is inserted into the main therapeutic bed board 201 to perform butt joint connection.

The first telescopic rod mechanism 400 and/or the second telescopic rod mechanism 500 extend out to be inserted into the auxiliary treatment bed 301 and/or the main treatment bed board 201 to realize the butt joint connection.

As an alternative implementation manner of this embodiment, referring to fig. 2-4, the main therapeutic bed board 201 in this embodiment includes a main bed board 201A and a plurality of section bed boards 201B, the first telescopic rod mechanism 400 is installed at the bottom of the main bed board 201A, and includes a first motor 401 and a first screw 403 connected with a motor shaft of the first motor 401, and a first screw nut 601 penetrating through each section bed board 201B is respectively provided, and the first screw 403 sequentially penetrates through the first screw nuts 601 of the section bed boards 201B.

The second telescopic rod mechanism 500 according to the present embodiment includes a second motor 501 and a second screw rod 503 connected to a motor shaft of the second motor 501, and a second screw rod nut 602 penetrating through each of the segmented bed plates 201B is disposed in each segmented bed plate.

In the medical electronic linac treatment bed of the embodiment, after the main treatment bed board 201 is controlled to slide to the isocenter position of the medical electronic linac 100, the second lead screw 503 of the second telescopic rod mechanism 500 is controlled to extend out to be in butt joint with the second lead screw nut 602 on the segmented bed board 201B, and the first telescopic rod mechanism 400 and the second telescopic rod mechanism 500 are controlled to reversely operate, so that the segmented bed board 201B is gradually slid from the main bed board 201A side to the auxiliary treatment bed board 301 side until the hollowed-out interval formed between the segmented bed boards 201B is opposite to the focus position of a patient, and then the first telescopic rod mechanism 400 and the second telescopic rod mechanism 500 stop operating.

The main therapeutic bed board 201 of this embodiment is composed of a main bed board 201A and a plurality of sectional bed boards 201B, and in the initial state, the sectional bed boards 201B and the main bed board 201A are tightly spliced to form a completed main therapeutic bed board, on which a patient lies, and the focus position is kept on the sectional bed board 201B.

In this embodiment, after the main treatment couch board 201 is controlled to slide to the isocenter of the medical electronic linear accelerator 100, the second lead screw 503 of the second telescopic rod mechanism 500 is controlled to extend out to be in butt joint with the second lead screw nut 602 on the segmented couch board 201B, so as to realize the butt joint connection of the main treatment couch board 201 and the auxiliary treatment couch board 301.

Further, in this embodiment, by controlling the first telescopic rod mechanism 400 and the second telescopic rod mechanism 500 to reversely operate, the sectional bed board 201B is slid from the main bed board 201A side to the auxiliary treatment bed board 301 side one by one until the hollowed-out interval formed between the sectional bed boards 201B is opposite to the focus position of the patient, and the first telescopic rod mechanism 400 and the second telescopic rod mechanism 500 stop operating, so that a non-shielding interval can be formed at the focus position of the patient, the problem of shielding rays by the treatment bed board is effectively solved, and the patient can obtain more accurate radiation dose.

As an alternative implementation manner of the present embodiment, the first telescopic rod mechanism 400 of the present embodiment includes a first coupling 402, a motor shaft of the first motor 401 is fixedly connected with the first screw 403 through the first coupling 402, and the second telescopic rod mechanism 500 of the present embodiment includes a second coupling 502, and a motor shaft of the second motor 501 is fixedly connected with the second screw 503 through the second coupling 502.

Specifically, referring to fig. 3 and 4, the first telescopic rod mechanisms 400 in this embodiment include two first screw nuts 601 respectively mounted on two sides of the bottom of the main bed board 201A, and two first screw nuts 601 respectively disposed on the segmented bed board 201B corresponding to the two first telescopic rod mechanisms 400; the two second telescopic rod mechanisms 500 are respectively arranged at two sides of the bottom of the auxiliary treatment bed 301, and two second screw nuts 602 are respectively arranged on the segmented bed board 201B corresponding to the two second telescopic rod mechanisms 500; the distance between the two first telescopic mechanisms 400 is different from the distance between the two second telescopic mechanisms 500, the distance between the two first screw nuts 601 is equal to the distance between the two first telescopic mechanisms 400, and the distance between the two second screw nuts 602 is equal to the distance between the two second telescopic mechanisms 500.

In this embodiment, the main bed board 201 and the auxiliary bed board 301 are connected and supported by the two first telescopic rod mechanisms 400 and the two second telescopic rod mechanisms 500, so that the support is more stable and uniform, the deformation of a single support of the treatment bed board is avoided, and the accurate positioning of the focus is ensured.

In this embodiment, the length of the main therapeutic bed board 201 formed by jointly splicing the main bed board 201A and the plurality of sectional bed boards 201B is L0, and the total length of the tightly spliced plurality of sectional bed boards 201B is L1, where L1 is greater than or equal to L0/2. Like this, if the focus of patient is located the upper half of the body, can place the upper half of the body on segmentation bed board 201B, if the focus of patient is located the lower half of the body, can place the lower half of the body on segmentation bed board 201B, through control first telescopic link mechanism 400 and second telescopic link mechanism 500 reverse operation, slide segmentation bed board 201B by main bed board 201A side to vice treatment bed board 301 side one by one, ensure that the fretwork interval that forms between segmentation bed board 201B can be relative with patient focus position for the treatment bed of this embodiment can be applicable to the patient that the focus is in any position, the commonality is stronger.

Further, referring to fig. 1-2, the main treatment couch base 202 according to the present embodiment is mounted on a first side of the medical electron linac 100, the main treatment couch base 202 is reciprocally slidable along a second direction (e.g., F2 direction in fig. 1) perpendicular to the first direction (e.g., F1 direction in fig. 1), the sub treatment couch base 302 is mounted on a second side of the medical electron linac 100, and the sub treatment couch base 302 is reciprocally slidable along a second direction (e.g., F2 direction in fig. 1) perpendicular to the first direction (e.g., F1 direction in fig. 1).

According to the medical electronic linear accelerator treatment bed, the focus of a patient is adjusted to be positioned at the isocenter of the medical electronic linear accelerator 100 by controlling the movements of the main treatment bed base 202 and the main treatment bed plate 201, the auxiliary treatment bed plate 301 is adjusted to be in butt joint with the main treatment bed plate 201 by controlling the movements of the auxiliary treatment bed base 302 and the auxiliary treatment bed plate 301, and the hollowed-out interval formed by sliding of the sectional bed plate 201B is adjusted to be opposite to the focus of the patient.

Specifically, the main treatment bed base 202 of the present embodiment includes a main bottom plate 202C, a main support plate 202A, and a main support bar 202B connecting the main bottom plate 202C and the main support plate 202A, wherein a first longitudinal rail 203 extending along a first direction is disposed on the main support plate 202A, and the main bed plate 201A is slidably mounted on the first longitudinal rail 203; the main base 202C is provided with a first transverse guide 205 extending along a second direction (e.g., the direction F2 in fig. 1) perpendicular to the first direction (e.g., the direction F1 in fig. 1), and the main base 202C is slidably mounted on the medical electronic linear accelerator 100 through the first transverse guide 205.

Optionally, the main supporting rod 202B is an electric push rod capable of lifting up and down, so that the height of the main treatment couch 201 can be adjusted, and the patient can lie on the main treatment couch 201 conveniently.

It should be understood by those skilled in the art that the main support bar 202B of the present embodiment may be a fixed support which is not liftable, and the patient can lie on the main treatment table 201 by providing a support step

The sub-therapeutic bed base 302 of this embodiment includes a sub-base plate 302C, a sub-support plate 302A, and a sub-support rod 302B connecting the sub-base plate 302C and the sub-support plate 302A, wherein a second longitudinal rail 303 extending along a first direction (e.g., the direction F1 in fig. 1) is provided on the sub-support plate 302A, and the sub-bed plate 301 is slidably mounted on the second longitudinal rail 303; the sub-chassis 303C is provided with a second transverse rail (not shown) extending in a second direction (e.g., the direction F2 in fig. 1) perpendicular to the first direction (e.g., the direction F1 in fig. 1), and the sub-chassis 302C is slidably mounted on the medical electronic linear accelerator 100 through the second transverse rail.

Optionally, the auxiliary supporting rod 302B in this embodiment is an electric push rod capable of lifting up and down, so that the auxiliary supporting rod can act synchronously with the main supporting rod 202B to adjust the lifting of the treatment couch board.

The embodiment also provides a control method of the medical electronic linear accelerator treatment bed, which is characterized by comprising the following steps:

and controlling the main treatment bed board and/or the auxiliary treatment bed board to slide to the isocenter position of the medical electronic linear accelerator, and performing butt joint connection with the auxiliary treatment bed board/main treatment bed board.

Further, a method for controlling a medical electronic linear accelerator treatment couch according to the embodiment includes:

controlling the movements of the main treatment bed base and the main treatment bed board, and adjusting the focus of the patient to be positioned at the isocenter of the medical electronic linear accelerator;

according to the size of the focus of the patient, the space S between the auxiliary treatment bed board and the main treatment bed board is determined so as to ensure that the focus of the patient can be completely covered by the space formed between the sectional bed boards 201B;

controlling the movement of the auxiliary treatment bed base and the auxiliary treatment bed board, adjusting the interval between the auxiliary treatment bed board and the main treatment bed board to be S, and controlling the second lead screw of the second telescopic rod mechanism to extend out and be in butt joint with the second lead screw nut on the sectional bed board;

according to the position of the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to reversely operate, the sectional bed boards are gradually slid from the main bed board side to the auxiliary treatment bed board side, and after the hollowed-out intervals formed between the sectional bed boards are opposite to the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to stop operating.

Specifically, the control method of the medical electronic linear accelerator treatment bed of the embodiment comprises the following steps:

the main supporting rod 202B reduces the distance from the main therapeutic bed board 201 to the ground, thereby facilitating the patient to go up and down the main therapeutic bed 200. When the patient is lying on the main treatment couch 200, the focus part of the patient is positioned at the position of the sectional couch 201B of the main treatment couch 201. The main treatment couch 200 is driven to slide along the first transverse guide rail 205 by controlling the transverse linear motor on the main treatment couch 200, the main treatment couch 201 is driven to slide along the first longitudinal guide rail 203 by controlling the longitudinal linear motor on the main treatment couch 200, and the focus of the patient is positioned at the isocenter of the accelerator by controlling the main support rod 202B to lift.

The auxiliary treatment couch 300 is driven to slide along the second transverse guide rail by controlling the transverse linear motor on the auxiliary treatment couch 300, the auxiliary treatment couch 301 is driven to slide along the second longitudinal guide rail 303 by controlling the longitudinal linear motor on the auxiliary treatment couch 300, and the second lead screw 503 of the second telescopic rod mechanism 500 in the auxiliary treatment couch 301 is aligned with the second lead screw nut 602 in the sectional couch 201B by controlling the lifting of the auxiliary support rod 302B. The second motor 501 is controlled to drive the second screw rod 503 to move forward, when the second screw rod 503 moves to the position of the second screw rod nut 602 in the segmented bed plate 201B, the first screw rod 403 of the first telescopic rod mechanism 400 in the main bed plate 201A moves backward at the same time, and at this time, the segmented bed plate 201B transitions from being connected with the main bed plate 201A to being connected with the auxiliary bed plate 301.

According to the position of the focus part of the patient on the main treatment couch 200, the movement distance of the first screw 403 and the movement distance of the second screw 503 are controlled, so that the lower part of the focus part of the patient is not shielded, and the radiation dose cannot be attenuated due to the existence of the couch plate when the radiation passes through the rear side and the inclined rear side of the treatment couch when the patient is subjected to radiation treatment.

At this time, the patient is supported by the main treatment couch 200 and the subsidiary treatment couch 300 together, so that the sedimentation error caused by supporting the patient by the single treatment couch is reduced.

It should be understood by those skilled in the art that the main therapeutic table 201 and the auxiliary therapeutic table 301 of the present embodiment are internally installed with screw rods for connecting the sectional tables, and the requirements of the present invention can be met if electric push rods or pneumatic push rods are used.

The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.

Claims (10)

1. A medical electron linac treatment couch, comprising:

a main treatment couch mounted on a first side of the medical electronic linear accelerator;

the auxiliary treatment bed is arranged on the second side of the medical electronic linear accelerator, and the first side and the second side are respectively positioned on two opposite sides of the medical electronic linear accelerator;

the main treatment bed comprises a main treatment bed board, the auxiliary treatment bed comprises an auxiliary treatment bed board, the main treatment bed board and/or the auxiliary treatment bed board can slide back and forth along a first direction close to/far from the medical electronic linear accelerator, and the main treatment bed board and/or the auxiliary treatment bed board is controlled to slide to the isocenter position of the medical electronic linear accelerator so as to be in butt joint with the auxiliary treatment bed board/the main treatment bed board.

2. The medical electronic linac treatment couch of claim 1 wherein said main treatment couch includes a main treatment couch base, said main treatment couch plate is reciprocally slidably mounted in a first direction on said main treatment couch base, said auxiliary treatment couch includes an auxiliary treatment couch base, said auxiliary treatment couch plate is reciprocally slidably mounted in a first direction on said auxiliary treatment couch base;

the main treatment bed board is provided with a first telescopic rod mechanism, and/or the auxiliary treatment bed is provided with a second telescopic rod mechanism, and after the main treatment bed board and the auxiliary treatment bed board are controlled to slide to the isocenter of the medical electronic linear accelerator, the auxiliary treatment bed board is inserted into the main treatment bed board through the first telescopic rod mechanism to be in butt joint, and/or the main treatment bed board is inserted into the second telescopic rod mechanism to be in butt joint.

3. The medical electronic linear accelerator treatment bed according to claim 2, wherein the main treatment bed board comprises a main bed board and a plurality of sectional bed boards, the first telescopic rod mechanism is arranged at the bottom of the main bed board and comprises a first motor and a first lead screw connected with a motor shaft of the first motor, a first lead screw nut penetrating through the sectional bed boards is respectively arranged in each sectional bed board, and the first lead screw sequentially penetrates through the first lead screw nuts of the sectional bed boards;

the second telescopic rod mechanism comprises a second motor and a second lead screw connected with a motor shaft of the second motor, and a second lead screw nut penetrating through the segmented bed board is respectively arranged in each segmented bed board;

after the main treatment bed board is controlled to slide to the isocenter position of the medical electronic linear accelerator, the second lead screw of the second telescopic rod mechanism is controlled to extend out to be in butt joint with the second lead screw nut on the segmented bed board, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to reversely operate, the segmented bed board is gradually slid from the main bed board side to the auxiliary treatment bed board side, and the first telescopic rod mechanism and the second telescopic rod mechanism stop operating until the hollowed-out interval formed between the segmented bed boards is opposite to the focus position of a patient.

4. The medical electronic linear accelerator treatment bed according to claim 3, wherein the two first telescopic rod mechanisms are respectively arranged at two sides of the bottom of the main bed board, and two first screw nuts are respectively arranged on the segmented bed board corresponding to the two first telescopic rod mechanisms; the two second telescopic rod mechanisms are respectively arranged at two sides of the bottom of the auxiliary treatment bed, and two second screw nuts are respectively arranged on the segmented bed board corresponding to the two second telescopic rod mechanisms; the distance between the two first telescopic mechanisms is unequal to the distance between the two second telescopic mechanisms, the distance between the two first screw nuts is equal to the distance between the two first telescopic mechanisms, and the distance between the two second screw nuts is equal to the distance between the two second telescopic mechanisms.

5. The medical electronic linear accelerator treatment bed according to claim 3, wherein the length of the main treatment bed board formed by jointly splicing the main bed board and the plurality of sectional bed boards is L0, the total length of the tightly spliced plurality of sectional bed boards is L1, and the L1 is more than or equal to L0/2.

6. A medical electron linac treatment couch according to claim 3 in which the primary treatment couch base is mounted on a first side of the linac and the primary treatment couch base is reciprocally slidable in a second direction perpendicular to the first direction, and the secondary treatment couch base is mounted on a second side of the linac and the secondary treatment couch base is reciprocally slidable in a second direction perpendicular to the first direction;

the focus of the patient is adjusted to be positioned at the isocenter of the medical electronic linear accelerator by controlling the movement of the main treatment bed base and the main treatment bed board, the auxiliary treatment bed board is adjusted to be in butt joint with the main treatment bed board by controlling the movement of the auxiliary treatment bed base and the auxiliary treatment bed board, and the hollowed-out interval formed by sliding the sectional bed board is adjusted to be opposite to the focus of the patient.

7. The medical electronic linac treatment couch of claim 6 wherein said main treatment couch base includes a main bottom plate, a main support plate and a main support bar connecting said main bottom plate and main support plate, said main support plate having a first longitudinal rail extending in a first direction, said main couch plate slidably mounted on said first longitudinal rail;

the main bottom plate is provided with a first transverse guide rail extending along a second direction perpendicular to the first direction, and the main bottom plate is slidably arranged on the medical electronic linear accelerator through the first transverse guide rail;

optionally, the main supporting rod is an electric push rod capable of ascending and descending.

8. The medical electronic linear accelerator treatment bed according to claim 7, wherein the sub-treatment bed base comprises a sub-bottom plate, a sub-support plate and a sub-support rod connecting the sub-bottom plate and the sub-support plate, the sub-support plate is provided with a second longitudinal guide rail extending along a first direction, and the sub-bed plate is slidably arranged on the second longitudinal guide rail;

the auxiliary bottom plate is provided with a second transverse guide rail extending along a second direction perpendicular to the first direction, and the auxiliary bottom plate is slidably arranged on the medical electronic linear accelerator through the second transverse guide rail;

optionally, the auxiliary supporting rod is an electric push rod capable of ascending and descending.

9. A method of controlling a medical electronic linac treatment couch according to any one of claims 1 to 8, comprising:

and controlling the main treatment bed board and/or the auxiliary treatment bed board to slide to the isocenter position of the medical electronic linear accelerator, and performing butt joint connection with the auxiliary treatment bed board/main treatment bed board.

10. A method of controlling a medical electronic linac treatment couch according to claim 9, comprising:

controlling the movements of the main treatment bed base and the main treatment bed board, and adjusting the focus of the patient to be positioned at the isocenter of the medical electronic linear accelerator;

determining the space S between the auxiliary treatment bed board and the main treatment bed board according to the focus of the patient;

controlling the movement of the auxiliary treatment bed base and the auxiliary treatment bed board, adjusting the interval between the auxiliary treatment bed board and the main treatment bed board to be S, and controlling the second lead screw of the second telescopic rod mechanism to extend out and be in butt joint with the second lead screw nut on the sectional bed board;

according to the position of the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to reversely operate, the sectional bed boards are gradually slid from the main bed board side to the auxiliary treatment bed board side, and after the hollowed-out intervals formed between the sectional bed boards are opposite to the focus of the patient, the first telescopic rod mechanism and the second telescopic rod mechanism are controlled to stop operating.