WO2022170595A1

WO2022170595A1 - Medical device

Info

Publication number: WO2022170595A1
Application number: PCT/CN2021/076594
Authority: WO
Inventors: 郭召
Original assignee: 西安大医集团股份有限公司
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-18

Abstract

A medical device, comprising: a frame; a drum (1) mounted on the frame, wherein the drum (1) can rotate around its own axis, and a treatment space (11) is formed in the inner side of the drum (1); and a focusing treatment head (2) mounted on the drum (1), wherein a part of the focusing treatment head (2) extends into the treatment space (11), and at least a part of the focusing treatment head (2) is movable, so that the focusing treatment head (2) moves out of the treatment space (11).

Description

medical equipment

technical field

The present disclosure relates to the technical field of medical devices, and in particular, to a medical device.

Background technique

As a large-scale medical device, the gamma knife uses radioactive rays (such as gamma rays) to focus on the target to irradiate the diseased tissue to achieve the purpose of treating the disease.

SUMMARY OF THE INVENTION

In one aspect, a medical device is provided, comprising: a frame; a roller mounted on the frame, the roller can rotate around its own axis, and the inner side of the roller forms a treatment space; a focus mounted on the roller A treatment head, a portion of the focused treatment head extending into the treatment space, the focused treatment head being at least partially movable to move the focused treatment head out of the treatment space.

In some embodiments, the focusing treatment head includes a shielding shell, a source carrier and a collimator assembly; the shielding shell is fixed on the roller, and the source carrier and the collimator assembly are in sequence Installed in the shielding shell, the source carrier and the collimator assembly can move relative to the shielding shell along the radial direction of the drum.

In some embodiments, the collimator assembly is mounted on the source body; the medical device further includes a first lifting mechanism disposed in the shielding housing, the first lifting mechanism is configured to drive the The source carrier and the collimator assembly move in the radial direction of the drum.

In some embodiments, the first lifting mechanism includes a first guide assembly and a first driving member; the source carrier is connected to the shielding housing through the first guide assembly, and the first guide member is The guiding direction is the radial direction of the drum, and the first driving member is configured to drive the source carrier to drive the collimator assembly to move along the first guiding assembly.

In some embodiments, the first guide assembly includes a first linear guide rail disposed on the shielding shell, and a moving part matched with the first linear guide rail, the source carrier and the The moving parts are connected in an integrated structure.

In some embodiments, the focusing treatment head can move along the radial direction of the drum; the medical device further comprises: a counterweight of the focusing treatment head, the counterweight is mounted on the drum and is connected with the The focusing treatment heads are arranged oppositely; the counterweight can move along the radial direction of the drum, so as to adjust the center of gravity of the medical device when the focusing treatment head moves along the radial direction of the drum.

In some embodiments, the medical device further comprises: a second lift mechanism disposed between the roller and the focus treatment head, and a third lift mechanism disposed between the roller and the counterweight ; the second lifting mechanism is configured to drive the focusing treatment head to move along the radial direction of the drum; the third lifting mechanism is configured to drive the counterweight to move along the radial direction of the drum.

In some embodiments, the focusing treatment head includes a shielding shell and a source carrier disposed in the shielding shell; the second lifting mechanism includes a second guide assembly and a second driving member; the second guide The assembly is connected to the side wall of the shielding shell, the extending direction of the second guide assembly is the radial direction of the drum, and the second driving member is configured to drive the shielding shell to drive the focusing treatment head along the The roller moves in the radial direction; the second guide component is a linear guide rail and a guide rail block matched with the linear guide rail, wherein the linear guide rail is installed on the roller, and the guide rail block is connected to the shielding shell. Side wall connection.

In some embodiments, the medical device further includes a first positioning mechanism, the first positioning mechanism configured to fix the focus treatment head when the focus treatment head is moved to a first preset position; and /or, the second driving member is a brake motor; and/or, the medical device further includes a first brake, and the first brake is configured to be used when the focusing treatment head moves to a first preset position The second driving member is controlled to brake the focusing treatment head.

In some embodiments, the first positioning mechanism includes an automatic latching device.

In some embodiments, the third lifting mechanism includes a third guide assembly and a third driving member, the third guide assembly includes a third linear guide rail disposed on the counterweight and/or penetrated through the A guide post on the counterweight, wherein the extension direction of the third linear guide rail and the extension direction of the guide post are both radial directions of the drum; the third driving member is configured to drive the counterweight along the drum movement in the radial direction.

In some embodiments, the medical device further includes a second positioning mechanism configured to fix the weight when the weight moves to a second preset position; and/or , the third driving member is a brake motor; and/or, the medical device further comprises a second brake, the second brake is configured to control the counterweight when the counterweight moves to a second preset position The third driving member brakes the counterweight.

In some embodiments, when the third guide assembly includes a third linear guide rail, the second positioning mechanism includes a guide rail brake block disposed on the third linear guide rail; When the assembly includes a guide column, the second positioning mechanism includes a brake provided on the guide column.

In some embodiments, the focusing treatment head includes a collimator assembly; the collimator assembly includes a primary collimator and an external collimator, and the primary collimator and the external collimator are connectable between the primary collimator and the external collimator. Remove the connection.

Description of drawings

In order to illustrate the technical solutions in the present disclosure more clearly, the following briefly introduces the accompanying drawings that need to be used in some embodiments of the present disclosure. Obviously, the accompanying drawings in the following description are only the appendixes of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings. In addition, the accompanying drawings in the following description may be regarded as schematic diagrams, and are not intended to limit the actual size of the product involved in the embodiments of the present disclosure, the actual flow of the method, the actual timing of signals, and the like.

1 is a structural diagram of a medical device in the related art;

FIG. 2 is a structural diagram of a focusing treatment head mounted on a roller according to some embodiments;

FIG. 3 is a structural diagram of a focusing treatment head mounted on a roller according to other embodiments;

FIG. 4 is a connection diagram of a source carrier and a collimator assembly according to some embodiments;

FIG. 5 is a connection diagram of a source body and a collimator assembly according to other embodiments;

6 is a block diagram of a medical device according to some embodiments;

FIG. 7 is a structural diagram of a focusing treatment head mounted on a roller according to other embodiments;

8 is a structural diagram of a counterweight mounted on a drum according to some embodiments;

FIG. 9 is a structural diagram of a focusing treatment head mounted on a roller according to other embodiments;

10 is a structural diagram of a positioning pin on a focusing treatment head inserted into a positioning hole according to some embodiments;

11 is a structural diagram of a second driving member according to some embodiments;

12 is a structural diagram of a second positioning mechanism according to some embodiments;

13 is a structural diagram of a detachable connection between a primary collimator and an external collimator in a focusing treatment head according to some embodiments;

FIG. 14 is a structural diagram of disassembling an external collimator based on FIG. 13 , according to some embodiments.

Detailed ways

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided by the present disclosure fall within the protection scope of the present disclosure.

Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used It is interpreted as the meaning of openness and inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" example)" or "some examples" and the like are intended to indicate that a particular feature, structure, material or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

In describing some embodiments, the expression "connected" and its derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components are in direct physical contact with each other. The embodiments disclosed herein are not necessarily limited by the content herein.

"At least one of A, B, and C" has the same meaning as "at least one of A, B, or C", and both include the following combinations of A, B, and C: A only, B only, C only, A and B , A and C, B and C, and A, B, and C.

"A and/or B" includes the following three combinations: A only, B only, and a combination of A and B.

As used herein, the term "if" is optionally construed to mean "when" or "at" or "in response to determining" or "in response to detecting," depending on the context. Similarly, depending on the context, the phrases "if it is determined that..." or "if a [statement or event] is detected" are optionally interpreted to mean "in determining..." or "in response to determining..." or "on detection of [recited condition or event]" or "in response to detection of [recited condition or event]".

The use of "adapted to" or "configured to" herein means open and inclusive language that does not preclude devices adapted or configured to perform additional tasks or steps.

In the description of the present disclosure, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying References to devices or elements must have, be constructed, and operate in a particular orientation and are therefore not to be construed as limitations of the present disclosure. In the description of the present disclosure, unless stated otherwise, "plurality" means two or more.

Some embodiments of the present disclosure provide a medical device, as shown in FIG. 1 , comprising: a frame, a roller 1 mounted on the frame, and a focusing treatment head 2 mounted on the roller 1 . Wherein, the roller 1 can rotate around its own axis OO', and the inner side of the roller 1 forms a treatment space 11. A portion of the focusing treatment head 2 extends into the treatment space 11 , and the focusing treatment head 2 is at least partially movable so that the focusing treatment head 2 is moved out of the treatment space 11 .

The treatment couch can carry the patient and move the patient into the treatment space 11 to irradiate the patient.

In the medical device provided by the present disclosure, since the focus treatment head 2 is at least partially movable, the focus treatment head 2 is moved out of the treatment space 11 . In the related art, the part of the focusing treatment head 2 protrudes into the treatment space 11, resulting in the reduction of the treatment space 11, and the formation of protrusions in the treatment space 11, which is not conducive to the movement of the patient in the treatment space 11, and the rotation speed of the device is affected. Compared with the restriction, when the focus treatment head 2 is used for treatment, the focus treatment head 2 can be extended into the treatment space 11, and when the focus treatment head 2 is in the non-working state, the focus treatment head 2 can be moved out of the treatment space 11, so that the focus treatment head 2 can be moved out of the treatment space 11. Increase the speed and improve the equipment utilization.

In some embodiments, as shown in FIG. 1 , the medical device may further include: an accelerator treatment head 3 mounted on the roller 1 . That is, the treatment device is a double-head treatment device.

In these embodiments, when the focusing treatment head 2 is used for treatment, part of the focusing treatment head 2 can be extended into the treatment space 11, and when the accelerator treatment head 3 is used for treatment, the focusing treatment head 2 can be moved out The treatment space 11 can realize the complementary advantages of the combination of the focusing treatment head 2 and the accelerator treatment head 3, and at the same time increase the rotation speed of the equipment, thereby improving the treatment efficiency and the utilization rate of the equipment. When the double-head mode is used for treatment in the related art, the treatment space is small, there are protrusions inside, the running speed of the equipment cannot be improved, and the treatment efficiency and the utilization rate of the equipment are low.

In some embodiments, as shown in FIGS. 2 and 3 , the focusing treatment head 2 includes a shielding housing 21 , a carrier body 22 and a collimator assembly 23 . The shielding shell 21 is fixed on the drum 1 , and the source carrier 22 and the collimator assembly 23 are sequentially installed in the shielding shell 21 . The source carrier 22 and the collimator assembly 23 can move in the radial direction of the drum 1 relative to the shielding housing 21 .

The source body 22 may be provided with a through hole, and the through hole is configured to carry a radiation source. An example of the radiation source may be a cobalt source, and the radiation source emits radioactive rays through the through hole. Examples of radioactive rays may be gamma rays. The collimator assembly 23 is disposed on the path of the radiation emitted by the radiation source in the source body 22 , and is configured to focus the radiation emitted by the radiation source in the source body 22 .

By fixing the shielding shell 21 at a certain distance from the rotation axis OO', and controlling the source carrier 22 and the collimator assembly 23 to move along the radial direction of the drum 1, when the focusing treatment head 2 needs to be used for treatment, Move the carrier body 22 and the collimator assembly 23 to the treatment position. At this time, through the focusing of the radiation emitted by the radiation source through the collimator assembly 23, a high-quality dose point can be formed at the isocenter S for the diseased tissue precise treatment. When the focusing treatment head 2 is in a non-working state, the carrier 22 and the collimator assembly 23 can be moved to the avoidance position. At this time, the collimator assembly 23 cannot form a high-quality dose point at the isocenter point S. The part of the focusing treatment head 2 that protrudes out of the treatment space 11 can be moved out of the treatment space 11 , so as to avoid occupying the patient's movement space and improve the patient's experience. It can also solve the problems in the related art when the double-head mode is used for treatment, the treatment space 11 is small, there are protrusions inside, the running speed of the equipment cannot be improved, and the treatment efficiency and the utilization rate of the equipment are low.

In some embodiments, as shown in FIGS. 4 and 5 , the collimator assembly 23 may be mounted on the source carrier 22 . As shown in FIG. 2 and FIG. 3 , the medical device further includes a first lifting mechanism 31 disposed in the shielding housing 21 . The first lifting mechanism 31 is configured to drive the source carrier 22 and the collimator assembly 23 along the diameter of the drum. to movement.

In some embodiments, as shown in FIGS. 2 and 3 , the first lifting mechanism 31 may include a first guide assembly 311 and a first driving member 312 . The source carrier 22 is connected to the shielding housing 21 through a first guide assembly 311 , the guiding direction of the first guide assembly 311 is the radial direction of the drum 1 , and the first driving member 312 is configured to drive the source carrier 22 to drive the collimator The assembly 23 moves in the radial direction of the drum 1 .

Wherein, the first driving member 312 may be a linear driving member, such as a jack, or a rack and pinion assembly, etc., which is not specifically limited herein. The first guide assembly 311 may be a guide post or a guide rail, which is not specifically limited herein.

In some embodiments, as shown in FIG. 2 and FIG. 3 , the first guide assembly 311 may include a first linear guide rail 311 a disposed on the shielding housing 21 , and a moving member matched with the first linear guide rail 311 a 311b, the source body 22 and the moving part 311b are connected into an integral structure.

The moving member 311b may be provided with a slider matched with the first linear guide rail 311a, and the source carrier 22 is supported on the first linear guide rail 311a by the first moving member 311b, and is positioned on the first moving member 311b on the first linear guide rail 311b. Under the driving, the collimator assembly 23 is driven to move along the radial direction of the drum 1 together.

In some embodiments, the first driving member 312 may be a linear driving motor. In this case, in order to fix the positions of the source body 22 and the collimator assembly 23 , the linear driving motor may be a braking motor.

In other embodiments, the medical device may further include a brake, and the brake is configured to control the first driving member 312 to act on the source carrier 22 and the collimator when the source carrier 22 and the collimator assembly 23 move to a preset position. The straightener assembly 23 is braked. The positions of the source carrier 22 and the collimator assembly 23 can also be fixed.

Wherein, the brake can be a guide rail brake block. During braking, the source carrier 22 and the collimator assembly 23 can be braked by controlling the guide rail braking block to contact the moving member.

In some embodiments, as shown in FIG. 6 , the focusing treatment head 2 can move in the radial direction of the drum 1 . The medical equipment further includes: a counterweight 4 of the focusing treatment head 2 . The counterweight 4 is mounted on the drum 1 and is opposite to the focusing treatment head 2 . The counterweight 4 can move in the radial direction of the drum 1 to adjust the center of gravity of the medical device when the focusing treatment head 2 moves in the radial direction of the drum 1 .

In these embodiments, when the focus treatment head 2 is raised and lowered along the radial direction of the drum 1 to adjust the position of the focus treatment head 2, since the weight of the focus treatment head 2 is relatively heavy, it is easy to cause the center of gravity of the entire frame to occur. Therefore, by setting the counterweight 4 and adjusting the position of the counterweight 4 along the radial direction of the drum 1, the center of gravity of the rack after the offset can be adjusted to keep the entire rack in balance and avoid causing security incident.

Among them, it should be noted that, in the process of adjusting the center of gravity, in order to avoid the simultaneous movement of the focusing treatment head 2 and the counterweight 4, which makes it difficult to grasp the unbalanced amount during the movement, and the sudden failure will destroy the balance of the drum, a component can be Move first, for example, you can control the focus treatment head 2 to move first, adjust the center of gravity of the frame to a lower position (such as the position below the rotation center of the drum 1 (that is, the rotation axis OO'), and then control another component Movement, adjust the center of gravity from a lower position back to the center of rotation of the drum, and gradually reach a balance, in the process, the entire frame is always balanced.

In some embodiments, in order to keep the frame stable during the adjustment process, the medical device may further include a positioning device, the positioning device is configured to relatively fix the frame and the drum 1 during the adjustment, and after the adjustment is completed, the frame and roller 1 is released.

The positioning device may include positioning pins and positioning holes, for example, positioning holes may be provided on the end face of the drum 1, and the positioning pins may be connected to the frame, and the drum 1 and the frame may be fixed through the positioning pins and positioning holes. In order to facilitate the unfixing of the frame and the drum 1, a dense bead sleeve may also be provided in the positioning hole to prevent the positioning pin from being stuck and unable to exit.

In some embodiments, as shown in FIG. 7 , the medical device may further include: a second lifting mechanism 5 arranged between the roller 1 and the focusing treatment head 2 , and as shown in FIG. 8 , a second lifting mechanism 5 arranged between the roller 1 and the counterweight The third lifting mechanism 6 between 4; the second lifting mechanism 5 is configured to drive the focus treatment head 2 to move in the radial direction of the drum 1; the third lifting mechanism 6 is configured to drive the counterweight 4 to move along the radial direction of the drum 1 .

In some embodiments, as shown in 7 , the focusing treatment head 2 includes a shielding casing 21 and a source body disposed in the shielding casing 21 . The second lifting mechanism 5 may include a second guide assembly 51 and a second driving member 52, the second guide assembly 51 is connected to the side wall of the shielding housing 21, and the extension direction of the second guide assembly 51 is the radial direction of the drum 1, The second driving member 52 is configured to drive the shielding housing 21 to drive the focusing treatment head 2 to move in the radial direction of the drum 1; The blocks are connected to the side walls of the shielding case 21 .

In some embodiments, as shown in FIG. 9 , the medical device may further include a first positioning mechanism 7, and the first positioning mechanism 7 is configured to adjust the focus treatment head 2 when the focus treatment head 2 moves to the first preset position. to be fixed. And/or, the second driving member 52 is a brake motor; and/or, the medical device may further include a first brake, and the first brake is configured to control the second brake when the focusing treatment head 2 moves to the first preset position. The driving member 52 brakes the focusing treatment head 2 .

Wherein, the first preset position may be the working position or the avoidance position of the focusing treatment head 2 , or may be the intermediate position between the working position and the avoidance position of the focusing treatment head 2 . There is no specific limitation here.

Since the first positioning mechanism 7 is configured to fix the focus treatment head 2 when the focus treatment head 2 moves to the first preset position, the safety of the suspension height of the focus treatment head 2 can be further ensured. However, by arranging the second driving member 52 as a braking motor, and/or by arranging the first brake, the safety of the suspension height of the focusing treatment head 2 can also be ensured.

In some embodiments, the second driving member 52 may be a jack. Such as worm gear jack, with self-locking function. In order to maintain the safety of the suspension height, the driving motor 521 used by the jack may be a braking motor.

In some embodiments, the first brake may be a rail brake pad. During braking, the focusing treatment head 2 can be braked by controlling the guide rail braking block to contact the side wall of the shielding shell 21 .

In some embodiments, the medical device may further include a first position detection device, the first position detection device is configured to detect the position of the focusing treatment head 2, and the second driving member 52 and/or the first brake may be configured according to the first position detection device. The position signal detected by a position detection device controls whether the focusing treatment head 2 is braked or not.

The first position detection device may be a photoelectric detection device, and the position of the focusing treatment head 2 may be acquired by detecting the stroke of the driving motor.

In some embodiments, as shown in FIGS. 9 and 10 , the first positioning mechanism 7 may include an automatic latching device.

Wherein, as shown in FIG. 9 , the automatic pinning device may include a positioning pin 71 and a positioning hole 72 respectively provided on the roller 1 and the focusing treatment head 2. For example, the positioning pin 71 may be set on the focusing treatment head 2, and the positioning hole 72 It can be set at a preset height of the roller 1, and the focusing treatment head 2 can be positioned by inserting the positioning pin 71 into the positioning hole 72.

In some embodiments, the positioning pins 71 and the positioning holes 72 may be two groups. As shown in FIG. 9 , a group of positioning pins 71 may be disposed on the side wall of the shielding case 21 , and a corresponding group of positioning holes 72 may be provided. It is arranged on the end surface of the drum 1, and when the focusing treatment head 2 moves to the avoidance position, the positioning pin 71 can be driven by the driving member to be inserted into the positioning hole 72. As shown in FIG. 10 , another set of positioning pins 71 can be arranged on the bottom of the focusing treatment head 2 , and a corresponding set of positioning holes 72 can be arranged on the roller 1 , for example, the roller 1 can be located on the roller 1 corresponding to the positioning pins 71 . The support plate 20 is set at the position, and a positioning hole 72 is set on the support plate 20. When the focusing treatment head 2 moves to the working position, the positioning pin 71 is inserted into the positioning hole 72 to realize positioning. Wherein, in some embodiments, as shown in FIG. 10 , the positioning hole 72 may be enclosed by two oppositely arranged elastic blocks. During the descending process of the focusing treatment head 2, the two elastic blocks move in opposite directions, Until the bottom of the focusing treatment head 2 abuts against the two elastic blocks, the positioning pin 71 is inserted into the positioning hole 72 at this time. Optionally, the positioning pin 71 can be a conical pin. It can also realize that the six degrees of freedom of the focusing treatment head 2 are completely limited when the focus treatment head 2 is in the working position, thereby improving the stability of the focusing treatment head 2 .

In some embodiments, as shown in FIG. 7 and FIG. 9 , the roller 1 is at a position corresponding to the focus treatment head 2, and on the side of the focus treatment head 2 close to the rotation axis OO' of the roller 1 and a side away from the rotation axis OO' Both sides are provided with a first blocking member 30 . In extreme cases, the focusing treatment head 2 can be prevented from falling, and the focusing treatment head 2 can be prevented from being thrown out in the radial direction of the drum 1 under the action of centrifugal force during rotation.

In some embodiments, as shown in FIG. 8 , the third lifting mechanism 6 may include a third guide assembly 61 and a third driving member 62 , and the third guide assembly 61 may include a third linear guide rail 61 b disposed on the counterweight 4 and/or the guide post 61c which is penetrated on the counterweight 4, wherein the extension direction of the third linear guide 61b and the extension direction of the guide post 61c are both radial directions of the drum 1, and the third drive member 62 is configured to drive The second box 61 a drives the counterweight 4 to move in the radial direction of the drum 1 .

In these embodiments, the counterweight 4 can be supported by the third linear guide rail 61b and/or the guide column 61c. When the counterweight 4 is supported by the guide column 61c, the bending moment of the guide column 61c in the horizontal position is relatively high. If it is large, it is necessary to control the amount of deformation to avoid the deformation of the guide rail column hindering the movement of the counterweight 4 . When the guide rail is used for support, the guide rail has high rigidity, but it needs to rely on the drum 1, and the space occupied in the drum 1 needs to be increased. Therefore, in order to ensure the reliability of the connection and avoid the deformation of the guide column 61c, a third linear guide rail 61b and a guide column can be used. 61c way of co-support.

In some embodiments, as shown in FIGS. 8 and 11 , the medical device further includes a second positioning mechanism 8 , and the second positioning mechanism 8 is configured to move the counterweight 4 to the second preset position when the counterweight 4 is moved to the second preset position. fixed. And/or, the third driving member 62 is a brake motor, and/or, the medical device may further include a second brake, and the second brake is configured to control the third brake when the counterweight 4 moves to the second preset position. The drive member 62 brakes the counterweight 4 .

The second preset position is not specifically limited here, and the second preset position may be any position where the counterweight 4 moves in the radial direction of the drum 1 .

In these embodiments, since the second positioning mechanism 8 is configured to fix the counterweight 4 when the counterweight 4 moves to the second preset position, the overhang safety of the counterweight 4 can be ensured. However, by arranging the third driving member 62 as a brake motor, and/or, by arranging a second brake, the safety of the suspension height of the counterweight 4 can also be ensured.

In some embodiments, as shown in FIG. 12 , the second drive member 62 may be a rack and pinion drive assembly. In the case where the third guide assembly 61 includes a guide post 61c, the rack and pinion driving assembly may include a gear 621, and a rack 622 disposed on the guide post 61c. The drive motor used by the rack and pinion drive assembly can be a brake motor.

In some embodiments, the second brake may be a holding brake.

In some embodiments, when the third guide assembly 61 includes a third linear guide rail 61b, the second positioning mechanism 8 may be a guide rail brake block. During braking, the counterweight 4 can be braked by controlling the guide rail brake block to contact the side wall of the counterweight 4 . As shown in FIG. 11 , when the third guide assembly 61 includes a guide post 61c, the second positioning mechanism 8 may be a brake. The holding brake can be an optical axis clamp, and the optical axis clamp is arranged on the guide post 61c.

In some embodiments, the medical device may further include a second position detection device, the second position detection device is configured to detect the position of the counterweight 4, and the third driving member 62 or the second brake may detect according to the first position The position signal detected by the device controls whether the counterweight 4 is braked or not.

Wherein, the first position detection device may be a photoelectric detection device, and the position of the counterweight may be acquired by detecting the stroke of the driving motor.

In some embodiments, the drum 1 is at a position corresponding to the counterweight 4, and the counterweight 4 is provided with a second blocking member on both the side close to the rotation axis OO' of the drum 1 and the side away from the rotation axis OO'. In extreme cases, the counterweight 4 can be prevented from falling, and the counterweight 4 can be prevented from being thrown out in the radial direction of the drum 1 under the action of centrifugal force during rotation.

In some embodiments, as shown in FIGS. 13 and 14 , the focusing treatment head 2 includes a collimator assembly 23 . The collimator assembly 23 includes a primary collimator 231 and an external collimator 232 . The primary collimator 231 and the external collimator 232 are detachably connected.

In this way, when the external collimator 232 and the primary collimator 231 are connected, the part of the focusing treatment head 2 extends into the treatment space 11. After the external collimator 232 and the primary collimator are disassembled, the focus can be The treatment head 2 is moved out of the treatment space 11 so that the treatment space 11 can be avoided.

In some embodiments, the external collimator 232 and the primary collimator 231 can be detachably connected by any one of snap connection, screw connection and hinge connection.

In some embodiments, the material of the external collimator 232 is selected from metallic or non-metallic materials with a density lower than that of tungsten. Lightweight materials such as steel. Can be easily lifted and removed.

In some embodiments, the medical device may further include a lifter configured to lift and lower the outrigger collimator 232 . The lifting member can be a treatment couch.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed in the present disclosure, think of changes or replacements, should cover within the scope of protection of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

A medical device comprising:

frame;

a roller installed on the frame, the roller can rotate around its own axis, and the inner side of the roller forms a treatment space;

A focusing treatment head mounted on the drum, a portion of the focusing treatment head protrudes into the treatment space, and the focusing treatment head is at least partially movable to move the focusing treatment head out of the treatment space.
The medical device of claim 1, wherein,

The focusing treatment head includes a shielding shell, a source carrier and a collimator assembly;

The shielding shell is fixed on the drum, the source carrier and the collimator assembly are sequentially installed in the shielding shell, and the source carrier and the collimator assembly can be relative to the The shielding shell moves along the radial direction of the drum.
The medical device of claim 2, wherein,

the collimator assembly is mounted on the source body;

The medical device further includes a first lifting mechanism disposed in the shielding housing, and the first lifting mechanism is configured to drive the source carrier and the collimator assembly to move in the radial direction of the drum.
The medical device of claim 3, wherein,

The first lifting mechanism includes a first guide assembly and a first driving member;

The source body is connected with the shielding shell through the first guide assembly, the guide direction of the first guide member is the radial direction of the drum, and the first driving member is configured to drive the The source carrier drives the collimator assembly to move along the first guide assembly.
The medical device of claim 4, wherein,

The first guide assembly includes a first linear guide rail disposed on the shielding shell, and a moving piece matched with the first linear guide rail, and the source carrier and the moving piece are connected as a whole structure.
The medical device of claim 1, wherein,

The focusing treatment head can move along the radial direction of the drum;

The medical equipment further comprises: a counterweight of the focusing treatment head, the counterweight is mounted on the drum and is arranged opposite to the focusing treatment head;

The counterweight is movable in the radial direction of the drum to adjust the center of gravity of the medical device when the focusing treatment head moves in the radial direction of the drum.
The medical device of claim 6, wherein,

The medical device further comprises: a second lifting mechanism arranged between the roller and the focusing treatment head, and a third lifting mechanism arranged between the roller and the counterweight;

the second lifting mechanism is configured to drive the focusing treatment head to move in the radial direction of the drum;

The third lifting mechanism is configured to drive the counterweight to move in the radial direction of the drum.
The medical device of claim 7, wherein,

The focusing treatment head includes a shielding shell and a carrier disposed in the shielding shell;

The second lifting mechanism includes a second guide assembly and a second driving member;

The second guide assembly is connected with the side wall of the shielding shell, the extension direction of the second guide assembly is the radial direction of the drum, and the second driving member is configured to drive the shielding shell to drive the The focusing treatment head moves along the radial direction of the roller; the second guide component is a linear guide rail and a guide rail block matched and connected with the linear guide rail, wherein the linear guide rail is installed on the roller, and the guide rail block Connect to the side wall of the shielding case.
The medical device of claim 8, wherein,

The medical device further includes a first positioning mechanism, the first positioning mechanism is configured to fix the focus treatment head when the focus treatment head is moved to a first preset position; and/or

The second driving member is a brake motor; and/or,

The medical device further includes a first brake configured to control the second driving member to brake the focus treatment head when the focus treatment head moves to a first preset position.
The medical device of claim 9, wherein,

The first positioning mechanism includes an automatic latching device.
The medical device according to any one of claims 7 to 10, wherein,

The third lifting mechanism includes a third guide assembly and a third driving member, and the third guide assembly includes a third linear guide rail disposed on the counterweight and/or a guide column passing through the counterweight , wherein the extension direction of the third linear guide rail and the extension direction of the guide column are both the radial direction of the drum;

The third driving member is configured to drive the counterweight to move in the radial direction of the drum.
The medical device of claim 11, wherein,

The medical device further includes a second positioning mechanism configured to fix the counterweight when the counterweight moves to a second preset position; and/or,

The third driving member is a brake motor; and/or,

The medical device further includes a second brake configured to control the third driving member to brake the weight when the weight moves to a second preset position.
The medical device of claim 12, wherein,

In the case that the third guide assembly includes a third linear guide rail, the second positioning mechanism includes a guide rail braking block disposed on the third linear guide rail;

When the third guide assembly includes a guide column, the second positioning mechanism includes a brake provided on the guide column.
The medical device of claim 1, wherein,

the focusing treatment head includes a collimator assembly;

The collimator assembly includes a primary collimator and an external collimator, and the primary collimator and the external collimator are detachably connected.