A treatment bed and radiotherapy equipment

Abstract

This utility model provides a treatment bed and radiotherapy equipment. The treatment bed includes: a base; a bed board assembly; a drive mechanism; and at least two sets of linkage assemblies, each set of linkage assemblies including a lifting linkage and a support linkage. Each set of linkage assemblies is connected to the drive mechanism to drive the bed board assembly to rise and fall. The hinged end of the lifting linkage is fixedly hinged to the base, and the sliding end of the lifting linkage is slidably connected to the bed board assembly. The hinged end of the support linkage is fixedly hinged to the bed board assembly, and the sliding end of the support linkage is slidably connected to the base. At least two sets of linkage assemblies are correspondingly arranged, and each set of linkage assemblies has two hinged ends that are fixedly hinged to the base and two hinged ends that are fixedly hinged to the bed board assembly. The hinged ends are spaced apart. During the rising and falling of the bed board assembly, the distance between the hinged ends remains constant. This treatment bed solves the technical problem of unstable mechanical structure in traditional scissor-type treatment beds during use.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, specifically to a treatment bed and radiotherapy equipment. Background Technology

[0002] To ensure convenient patient access, existing radiotherapy beds typically employ a scissor-type linkage mechanism for multiplied height adjustment, ensuring the bed's lifting stroke is minimized while still meeting treatment requirements. The scissor-type linkage mechanism uses a motor to drive the linkage, raising and lowering the bed platform. Since radiotherapy beds are used for patient support and positioning, extremely high requirements are placed on the bed's load-bearing capacity and system stability during lifting.

[0003] Most existing treatment beds use a scissor-link structure to support the bed board. This structure involves a set of links located on both sides of the bed board, with only two contact points between the bed board and each link. The entire scissor-link assembly forms four support points with the bed board: two fixed rotating supports and two sliding rotating supports. Because the scissor-link needs to converge laterally and rise longitudinally when the treatment bed rises, the sliding rotating supports need to move closer to the fixed rotating supports. This reduces the distance between the four supports, leading to decreased accuracy and changes in system stability. Therefore, the existing technology requires improvement.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a treatment bed to solve the technical problem of system stability changes during the lifting and lowering process of the liftable treatment bed in the related technology.

[0006] To achieve the above technical objectives, this utility model adopts the following technical solution: A treatment bed is provided, comprising: a base; a bed board assembly; a drive mechanism; at least two sets of linkage assemblies, each set including a lifting linkage and a support linkage; each set of linkage assemblies is connected to the drive mechanism to drive the bed board assembly to rise and fall; wherein, the hinged end of the lifting linkage is fixedly hinged to the base, and the sliding end of the lifting linkage is slidably connected to the bed board assembly; the hinged end of the support linkage is fixedly hinged to the bed board assembly, and the sliding end of the support linkage is slidably connected to the base; at least two sets of linkage assemblies are correspondingly arranged, each set of linkage assemblies having two hinged ends fixedly hinged to the base; each set of linkage assemblies having two hinged ends fixedly hinged to the bed board assembly; the hinged ends are spaced apart; during the rising and falling of the bed board assembly, the distance between the hinged ends remains constant.

[0007] Furthermore, the linkage assembly includes: two lifting links arranged opposite to each other and two supporting links arranged opposite to each other; one lifting link is hinged to one supporting link; and the other lifting link is hinged to the other supporting link.

[0008] Further, the linkage assembly includes: a connecting rod, one end of which is connected to one of the lifting linkages; the other end of which is connected to another lifting linkage; a transmission member, one end of which is connected to one of the lifting linkages; the other end of which is connected to another lifting linkage; and a drive mechanism connected to the transmission member to drive the lifting linkage to rotate.

[0009] Furthermore, the driving mechanism includes: a base plate; a drive motor connected to the base plate; a third gear disposed on the output shaft of the drive motor; a lead screw, on which a fourth gear meshes with the third gear; and the lead screw being threadedly connected to the transmission component.

[0010] Furthermore, the base plate includes: a sleeve portion, on which the lead screw passes; and an auxiliary portion, which is connected to the sleeve portion and has a connecting hole, and is hinged to the base through the connecting hole; wherein there are two auxiliary portions, which are arranged at intervals.

[0011] Furthermore: a connecting post is provided protruding on the hinge end; or, a hinge hole is provided on the hinge end.

[0012] Furthermore, the sliding end is slidably connected to the base or the bed board assembly via rollers.

[0013] Furthermore, the linkage assembly includes a first linkage assembly and a second linkage assembly; wherein: the sliding end of the first linkage assembly and the sliding end of the second linkage assembly are both located between the hinge end of the first linkage assembly and the hinge end of the second linkage assembly.

[0014] Furthermore, the bed board assembly includes: A first base, the bottom of which is slidably connected to the sliding end of the lifting link, and the bottom of which is hinged to the hinge end of the support link; a first motor, which is mounted on the first base; a second base, which is mounted on the first base and configured to slide relative to the first base along the X-axis direction under the drive of the first motor; a second motor, which is mounted on the second base; and a sliding member, which is mounted on the second base and configured to slide relative to the second base along the Y-axis direction under the drive of the second motor.

[0015] A radiotherapy device includes a treatment bed, wherein the treatment bed is as described above.

[0016] Beneficial effects: The treatment bed of this invention provides more support points to the bed through the linkage assembly, ensuring the stability and high precision of the bed during the rising and falling process.

[0017] The treatment bed of this invention achieves high-stroke lifting and lowering of a single-layer linkage through parallel scissor-type linkages, ensuring that the patient's bed height is as low as possible and improving the practicality of the radiotherapy bed.

[0018] The treatment bed of this invention achieves stable movement of the three-dimensional treatment bed by setting up a linkage assembly.

[0019] This invention relates to a treatment bed that replaces a single-motor drive with a dual-motor drive, reducing structural dimensions and improving space utilization. The dual-motor output is more stable than that of a single-motor system, resulting in higher system stability. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of the treatment bed used in an embodiment of this utility model; Figure 2 This is a schematic diagram of the assembly structure of the treatment bed used in this embodiment of the utility model; Figure 3 This is a schematic diagram of the linkage assembly of the treatment bed used in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the first base of the treatment bed used in this embodiment of the utility model; Figure 5 This is a schematic diagram of the bed board assembly of the treatment bed provided in this embodiment of the utility model.

[0021] The above figures include the following reference numerals: 1. Base; 2. Bed board assembly; 3. Lifting linkage; 4. Supporting connecting rods; 5. Drive mechanism; 6. Connecting rod; 7. Transmission components; 8. Base plate; 9. Drive motor; 11. Lead screw; 12. The fourth gear; 13. Socket part; 14. Auxiliary Department; 16. Connecting column; 17. Rollers; 18. First matrix; 19. Second motor; 20. Clearance groove; 21. First rack; 22. Second matrix; 23. Mounting holes; 24. Sliding components; 26. Hinge hole; 27. Second rack; 28. The second gear; 29. First motor. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] See Figures 1 to 5 According to an embodiment of this utility model, a treatment bed is provided, comprising: a base 1; a bed board assembly 2; a drive mechanism 5; at least two sets of linkage assemblies, each set of linkage assemblies including a lifting linkage 3 and a supporting linkage 4; each set of linkage assemblies is connected to the drive mechanism 5 to drive each set of linkage assemblies to push the bed board assembly 2 up and down; wherein, the hinged end of the lifting linkage 3 is fixedly hinged to the base 1, and the sliding end of the lifting linkage 3 is slidably connected to the bed board assembly 2; the hinged end of the supporting linkage 4 is fixedly hinged to the bed board assembly 2, and the sliding end of the supporting linkage 4 is slidably connected to the base 1; at least two sets of linkage assemblies are correspondingly arranged, each set of linkage assemblies having two hinged ends fixedly hinged to the base 1; each set of linkage assemblies having two hinged ends fixedly hinged to the bed board assembly 2; the hinged ends are spaced apart; during the lifting and lowering of the bed board assembly 2, the distance between the hinged ends remains constant.

[0024] With the above configuration, the treatment bed includes a base 1, a bed board assembly 2, a drive mechanism 5, and at least two sets of parallel linkage assemblies. Each linkage assembly includes a lifting linkage 3 and a support linkage 4, with their hinged ends fixedly hinged to the base 1 and the bed board assembly 2, respectively, and their sliding ends slidably connected to the bed board assembly 2 and the base 1, respectively. By forming multiple fixed hinged supports through at least two sets of parallel linkage assemblies, the anti-tipping ability and positional accuracy of the bed board assembly 2 are significantly improved, solving the technical problem of instability in the use of height-adjustable treatment beds in related technologies.

[0025] See Figure 3In the treatment bed of this embodiment, the linkage assembly includes: two lifting linkages 3 and two supporting linkages 4 arranged opposite to each other; one lifting linkage 3 is hinged to one supporting linkage 4; and the other lifting linkage 3 is hinged to the other supporting linkage 4.

[0026] With the above configuration, each linkage assembly includes symmetrically arranged lifting linkage 3 and support linkage 4, which are hinged together. This symmetrical layout ensures even distribution of driving force, preventing bed board tilting caused by uneven force on one side. The parallel design of the two linkages distributes the load, improving overall load-bearing capacity.

[0027] In the treatment bed of this embodiment, see Figure 3 The linkage assembly includes a connecting rod 6, one end of which is connected to one of the lifting linkages 3; the other end of which is connected to another lifting linkage 3; a transmission component 7, one end of which is connected to one of the lifting linkages 3; the other end of which is connected to another lifting linkage 3; and a drive mechanism 5 connected to the transmission component 7 to drive the lifting linkage 3 to rotate.

[0028] With the above configuration, the linkage assembly is supplemented with a connecting rod 6 and a transmission component 7. The connecting rod 6 has lifting connecting rods 3 fixed at both ends, and the transmission component 7 is linked to the drive mechanism 5. The connecting rod 6 forces the lifting connecting rods 3 on both sides to move synchronously, eliminating asynchronous lifting errors. The transmission component 7 converts the driving force into linear push-pull motion, ensuring a smooth and seamless lifting process.

[0029] See Figure 1 , Figure 3 In the treatment bed of this embodiment, the drive mechanism 5 includes: a base plate 8; a drive motor 9 connected to the base plate 8; a third gear on the output shaft of the drive motor 9; a lead screw 11, on which a fourth gear 12 meshes with the third gear; and the lead screw 11 is threadedly connected to the transmission component 7.

[0030] Specifically, the drive mechanism 5 includes a base plate 8, a drive motor 9, a lead screw 11, and a gear set; the base plate 8 is hinged to the base 1 through the connecting hole of the auxiliary part 14. The rotation of the lead screw 11 drives the transmission component 7 to move linearly along the lead screw axis while the lead screw rotates, achieving stepless and precise lifting.

[0031] In the treatment bed of this embodiment, the base plate 8 includes: a sleeve part 13, on which the lead screw 11 passes; an auxiliary part 14, which is integrally formed with the sleeve part 13, and is provided with a connecting hole, and is hinged to the base 1 through the connecting hole; wherein, there are two auxiliary parts 14, which are arranged at intervals.

[0032] With the above configuration, the base plate 8, through the hinged connection of the auxiliary part 14, can adapt to the deflection of the lead screw angle and avoid the mechanism from jamming.

[0033] See Figure 3 In the treatment bed of this embodiment: a connecting post 16 is provided protruding on the hinge end; or, a hinge hole 26 is provided on the hinge end.

[0034] Specifically, the hinge hole 26 or the connecting post 16 can be set according to the convenience of structural installation, thereby improving production efficiency.

[0035] See Figure 3 The sliding end is slidably connected to the base 1 or the bed board assembly 2 via a roller 17. In this way, the roller 17 converts sliding friction into rolling friction. Figure 3 The middle roller 17 contacts the slide rail, reducing lifting resistance.

[0036] In the treatment bed of this embodiment, see Figure 3 The linkage assembly includes a first linkage assembly and a second linkage assembly; wherein: the sliding end of the first linkage assembly and the sliding end of the second linkage assembly are both located between the hinge end of the first linkage assembly and the hinge end of the second linkage assembly.

[0037] In this way, the stable connection at the hinge end improves the stability of the system. The hinge end provides stable support to the bed board assembly 2 at both ends, thereby ensuring stable lifting function.

[0038] See Figure 2 In the treatment bed of this embodiment, the bed board assembly 2 includes: A first base 18, the bottom of which is slidably connected to the sliding end of the lifting link, and the bottom of which is hinged to the hinge end of the support link; a first motor 29, which is mounted on the first base 18; a second base 22, which is mounted on the first base 18 and configured to slide relative to the first base 18 along the X-axis direction under the drive of the first motor 29; a second motor 19, which is mounted on the second base 22; and a sliding member 24, which is mounted on the second base 22 and configured to slide relative to the second base 22 along the Y-axis direction under the drive of the second motor.

[0039] With the above configuration, the linkage assembly provides movement in the z-axis direction for the medical bed. Through the movement of the first base 18 and the second base 22, movement in both the X and Y axes can be provided for the bed board assembly 2.

[0040] Specifically, there are multiple second slide rails, each corresponding to a different linkage assembly.

[0041] The radiotherapy equipment in this embodiment includes a treatment bed, which is the treatment bed described above, thereby ensuring the reliable execution of the radiotherapy procedure.

[0042] A preferred embodiment of this application is described below: The treatment bed includes a base 1, a linkage assembly, and a bed board assembly 2. As shown in the figure, the treatment bed includes two sets of linkage assemblies arranged in parallel. Each linkage assembly includes a lifting linkage 3 and a supporting linkage 4, which are hinged together. The lifting linkage 3 includes a sliding end and a hinged end. A drive motor 9 is located on one side of the hinged end of the lifting linkage 3 to provide power for its movement. The hinged end of the lifting linkage 3 is hinged to the base 1, while the sliding end of the lifting linkage 3 contacts the sliding plane of the bed board assembly 2. Similarly, the supporting linkage 4 also includes a hinged end and a sliding end. The sliding end of the supporting linkage 4 is in sliding contact with the base 1, and the hinged end of the supporting linkage 4 is hinged to the bed board assembly 2.

[0043] The design of two sets of parallel linkage assemblies allows for more contact points between the bed board assembly 2 and the linkage assembly, with four hinged ends providing contact support. This ensures that the support distance and position between the hinged ends remain unchanged within the lifting range of the treatment bed, thereby guaranteeing high stability and high positional accuracy during the lifting process. Specifically, in this embodiment, the parallel arrangement means that the lifting linkage of the first linkage assembly and the support linkage of the second linkage assembly are parallel.

[0044] For any set of linkage assemblies, the support linkage 4 and the lifting linkage 3 are hinged, and the hinge point is located between the sliding end and the hinge end of the lifting linkage 3, and between the sliding end and the hinge end of the support linkage 4. When the hinge point is closer to the base 1, the stroke of the lifting linkage 3 decreases proportionally, but the driving torque required by the motor increases proportionally. When the hinge point is closer to the bed board assembly 2, the driving torque required by the motor decreases proportionally, but the stroke of the lifting linkage 3 increases proportionally. Preferably, setting the hinge point in the middle position of the lifting linkage 3 can balance the torque and stroke; in other embodiments, the hinge point can be closer to the bed board assembly 2 or the base 1.

[0045] The output shaft of the drive motor 9 is connected to a third gear (not shown). The third gear meshes with the fourth gear 12. One end of the lead screw 11 is coaxially fixed to the center of the fourth gear 12. The base plate 8 includes a sleeve part 13 and an auxiliary part 14. The sleeve part 13 is directly sleeved on the lead screw 11, and the auxiliary part 14 is hinged to the base 1. When the drive motor 9 rotates, the third gear rotates coaxially with the drive motor 9, which drives the fourth gear 12 to rotate. The lead screw 11 rotates coaxially with the fourth gear 12. A transmission component 7 is provided on the lifting link 3. The end of the lead screw 11 away from the base plate 8 passes through the transmission component 7, which is threadedly connected to the lead screw 11. Since the auxiliary part 14 of the base plate 8 is hinged to the base 1, the lead screw 11 rotates around the hinge axis of the base 1. The transmission component 7, which is threadedly connected to the lead screw 11, moves along the axis of the lead screw 11 while rotating with it, thereby realizing the lifting movement of the lifting rod.

[0046] Each linkage assembly has its own drive structure with a drive motor 9. As a preferred embodiment, the double linkage assembly has two drive motors 9. Dual-motor drive reduces structural size and improves space utilization. The dual-motor output is smoother than that of a single motor, resulting in higher system stability.

[0047] The sliding end of the first base 18 and the lifting link 3 in the linkage assembly are in sliding contact, and the hinged end of the first base 18 and the supporting link 4 are hinged. The first motor is fixed on the first base 18, and the first rack 21 is fixed on the second base 22. The output shaft of the first motor and the first gear are coaxially connected. The second base 22 and the first base 18 are slidably connected through an X-axis guide rail, wherein the X-axis guide rail is a crossed roller guide rail. When the first motor rotates, the first gear and the first rack 21 move relative to each other, and the second base 22 moves relative to the first base 18 along the X-axis direction.

[0048] The first base 18 has a second motor clearance slot 20 and a first motor mounting hole 23 for the output shaft of the first motor to pass through. The second motor clearance slot 20 is adapted to the second motor, allowing the second motor portion to pass through the second motor clearance slot 20 and be fixed to the second base 22. The second base 22 has a second motor mounting hole 23 for the output shaft of the second motor to pass through. The second gear 28 and the second motor 19 are coaxially connected. The second rack 27 is fixed to the Y-axis sliding member. The Y-axis sliding member and the second base 22 are slidably connected by a Y-axis slide rail, which is a crossed roller guide rail. When the second motor 19 rotates, the second gear 28 and the second rack 27 move relative to each other, and the Y-axis sliding member moves relative to the second base 22 along the Y-axis direction.

[0049] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0050] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0051] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0052] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0053] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A treatment bed, characterized in that, include: Base (1); Bed board assembly (2); Drive mechanism (5); At least two sets of linkage assemblies, each set of linkage assemblies including a lifting linkage (3) and a support linkage (4); each set of linkage assemblies is connected to the drive mechanism (5) to drive each set of linkage assemblies to push the bed board assembly (2) up and down; The hinge end of the lifting link (3) is fixedly hinged to the base (1), and the sliding end of the lifting link (3) is slidably connected to the bed board assembly (2); the hinge end of the support link (4) is fixedly hinged to the bed board assembly (2), and the sliding end of the support link (4) is slidably connected to the base (1). At least two sets of the connecting rod assemblies are provided correspondingly, and each set of the connecting rod assemblies has two hinge ends that are fixedly hinged to the base (1); each set of the connecting rod assemblies has two hinge ends that are fixedly hinged to the bed board assembly (2); the hinge ends are arranged at intervals; during the lifting and lowering of the bed board assembly (2), the distance between the hinge ends remains constant.

2. The treatment bed according to claim 1, characterized in that, The linkage assembly includes: The two lifting links (3) and the two supporting links (4) are arranged opposite to each other. One of the lifting links (3) is hinged to one of the supporting links (4); Another of the lifting links (3) is hinged to another of the supporting links (4).

3. The treatment bed according to claim 2, characterized in that, The linkage assembly includes: A connecting rod (6), one end of which is hinged to one of the lifting connecting rods (3); the other end of which is hinged to another of the lifting connecting rods (3); A transmission component (7) is provided, one end of which is hinged to one of the lifting links (3); the other end of which is hinged to another of the lifting links (3); and a drive mechanism (5) is connected to the transmission component (7) to drive the lifting links (3) to rotate.

4. The treatment bed according to claim 3, characterized in that, The drive mechanism (5) includes: Base plate (8); A drive motor (9) is connected to a base plate (8); a third gear is provided on the output shaft of the drive motor (9); A lead screw (11) is provided with a fourth gear (12) that meshes with the third gear; the lead screw (11) is threadedly connected to the transmission component (7).

5. The treatment bed according to claim 4, characterized in that, The base plate (8) includes: The connecting part (13) is through which the lead screw (11) passes; An auxiliary part (14) is connected to the sleeve part (13). The auxiliary part (14) is provided with a connecting hole and is hinged to the base (1) through the connecting hole. There are two auxiliary parts (14), and the two auxiliary parts (14) are arranged at intervals.

6. The treatment bed according to claim 1, characterized in that: A connecting post (16) protrudes from the hinge end; or... The hinge end is provided with a hinge hole (26).

7. The treatment bed according to claim 1, characterized in that: The sliding end is slidably connected to the base (1) or the bed board assembly (2) via a roller (17).

8. The treatment bed according to claim 1, characterized in that, The linkage assembly includes a first linkage assembly and a second linkage assembly; wherein: The sliding end of the first link assembly and the sliding end of the second link assembly are both located between the hinge end of the first link assembly and the hinge end of the second link assembly.

9. The treatment bed according to claim 1, characterized in that, The bed board assembly (2) includes: The first base (18) has its bottom slidably connected to the sliding end of the lifting link, and its bottom is hinged to the hinge end of the support link. The first motor (29) is mounted on the first base (18); A second base (22) is disposed on the first base (18), and the second base (22) is configured to slide relative to the first base (18) along the X-axis direction under the drive of the first motor (29); The second motor (19) is mounted on the second base (22); A slider (24) is disposed on the second base (22) and is configured to slide relative to the second base (22) in the Y-axis direction under the drive of the second motor (19).

10. A radiotherapy device, comprising a treatment bed, characterized in that, The treatment bed is the treatment bed according to any one of claims 1 to 9.

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