Lifting arm supporting platform for irradiation treatment

Abstract

A patient support platform and method for supporting a patient during irradiation therapy. The platform includes pelvic and back support members, left / right armrest adapters, left / right armrest units, and a handle bar. Each armrest unit includes: an armrest base linearly displaceable along a respective armrest adapter; the armrest rod extends forwards towards the far side from the end part of the armrest base and can pivot relative to the armrest base; and an armrest arm support for supporting the arm portion, the armrest arm support being linearly displaceable along the length of the armrest bar. The handle bar is removably coupled with the left and right grab bars for grasping by a patient's hand when the arm portion is supported. At least a portion of the armrest unit is selectively adjustable to accommodate the patient such that each arm is raised and extended forward of the body, an arm portion of each arm is supported by a respective armrest arm support, and the handle bar is held by a hand such that the arm is displaced from a path of applied irradiation.

Description

Technical Field

[0001] This disclosure generally relates to the field of radiation therapy, and more specifically, to a platform for supporting patients during radiation therapy. background

[0002] Teletherapy is defined as a treatment method in which an irradiation source is located at a distance from the body to be treated. X-rays and electron beams have long been used in teletherapy to treat various cancers. Unfortunately, X-rays exhibit linear energy transfer with an exponential decay function, making their use extremely unsafe for deeply embedded growths. The use of heavy particles, particularly hadrons, and especially protons, in teletherapy has found increasing acceptance due to their ability to penetrate to specific depths without significantly damaging intermediate tissues. Specifically, the linear energy transfer of hadrons exhibits an inverse depth distribution, where a prominent Bragg peak is defined as the point where hadrons deposit most of their energy and occurs at the end of the hadron path. For electrons, the Bragg peak is not observable due to high scattering. For protons with energies below approximately 70 MeV, scattering significantly suppresses the Bragg peak. As a result of this effect, higher energies can be directed to embedded growths compared to X-rays and electron beams, which are particularly damaging to intermediate tissues. While the term "hadron" encompasses a wide range of particles, in practice, protons and various ions are the most widely used in therapy. For clarity, this article will describe treatments performed with protons; however, this is not intended to limit the scope of the treatment in any way.

[0003] Protons or ions can be focused onto a target volume with variable penetration depth. In this way, the dose distribution can be precisely matched to the target volume. In particular, a proton beam can be conformed to the shape and depth of the target mass (e.g., a tumor) to avoid irradiating healthy body tissue while delivering a lower whole-body radiation dose. Therefore, compared to conventional external beam therapy, proton therapy allows for a gradually increasing dose, which can be particularly beneficial for certain treatments (e.g., eye tumors or skull base and paravertebral tumors). Proton therapy also enables highly precise treatment planning with reduced side effects, such as for pediatric treatment or prostate cancer treatment. To ensure complete irradiation of the target mass, multiple beams are typically applied from several different directions to the embedded mass. Regardless of whether the multiple beams are fired sequentially or simultaneously, the point where the multiple beams intersect is called the "isocenter." For maximum bioefficiency, the isocenter must precisely coincide with the target mass.

[0004] Irradiation therapy is performed on the target tissue during a clearly defined process. In the first phase, the target tissue is imaged and a treatment plan is established. The treatment plan includes a series of treatment fields, each defining at least the dose parameters, target tissue location and orientation, and irradiation angle for each irradiation dose. Markers or reference markers are defined for the patient to guide patient positioning for treatment. In subsequent phases, irradiation is performed in response to the established treatment plan, with multiple treatment sessions over a period of time. During each treatment session, care must be taken to ensure proper patient positioning relative to the reference markers to ensure the applied irradiation dose is properly targeted and to avoid damage to organs near the target tissue. Patient positioning based on markers can be performed based on visualization of the patient relative to the defined markers.

[0005] Specifically, prior to treatment, the patient is moved to an initial setup position using a positioning support platform, causing a reference marker to converge with the isocenter of the treatment room. The treatment plan is then executed with respect to this setup, resulting in the target tissue being positioned at the isocenter of the treatment room. The patient is then repositioned relative to the setup position according to the treatment plan requirements. Specifically, the target tissue continues to be repositioned relative to the beam nozzle of the irradiation beam delivery device, which may have a fixed position or be capable of limited movement, for example, by means of a gantry. The isocenter of the treatment room can be designated by visual indicators (e.g., multiple laser beams). Image-guided radiotherapy (IGRT) techniques can be used to verify the patient's positioning. Stabilizing mechanisms can be applied to ensure that the patient's position relative to the isocenter is maintained during treatment, such as using a mask or shield to immobilize the patient's face or body parts.

[0006] Irradiation therapy is typically administered while the patient is in a recumbent position, where the patient's body is substantially horizontal and aligned with the ground, supported by a platform surface below. For example, a recumbent patient may be in a supine position with their back against the surface below and their face upward, or in a prone position with their chest against the surface below and their face downward. However, some treatments may be difficult to perform on recumbent patients, such as due to the location of the target tissues within the body, and such treatments may require or be facilitated by an upright or sitting (i.e., non-horizontal) positioning. Therefore, the patient may be positioned on a recliner that can be repositioned and reoriented along multiple axes in three-dimensional space. An upright or sitting positioning can provide greater patient comfort compared to a recumbent positioning, such as for patients with respiratory complications. Upright positioning can also be associated with cost-effectiveness and greater compatibility with existing equipment. Furthermore, compared to a recumbent positioning, upright positioning may affect the volume, position, and / or movement of body organs such as the lungs and heart, which may have beneficial effects in certain clinical situations.

[0007] For some treatments, it may be necessary to move or reposition one or more parts of the patient's body to avoid physical interference with the applied radiation. In particular, when treating the chest area, it may be necessary to elevate or otherwise move the patient's arm to avoid interference. This may be necessary whether the patient is in a supine, upright, or sitting position during treatment. Furthermore, it is necessary to accommodate patients with different body shapes and sizes, including different arm lengths. Overview

[0008] According to one aspect of this disclosure, a patient support platform is thus provided for supporting a patient during irradiation therapy. The support platform includes a pelvic support member configured to support the patient's pelvis and a back support member configured to support the patient's back. The platform includes an armrest adapter comprising a left armrest adapter coupled to the left side of the back support member and a right armrest adapter coupled to the right side of the back support member. The platform includes armrest units comprising a left armrest unit adjustablely coupled to the left armrest adapter and a right armrest unit adjustablely coupled to the right armrest adapter. Each armrest unit includes: an armrest base linearly displaceable along the corresponding armrest adapter; an armrest bar extending distally forward of the armrest base and pivotable relative to the armrest base; and an armrest arm support linearly displaceable along the length of the armrest bar and configured to support a portion of the patient's arm. The platform includes a handgrip bar detachably connected to the left armrest of the left armrest unit and the right armrest of the right armrest unit, and configured to be gripped by the patient's hand when the arm portion is supported. At least a portion of the armrest unit is selectively adjustable to accommodate a patient positioned on the support platform, such that each of the patient's arms is raised and extended in front of the body, with the arm portion of each arm supported by a corresponding armrest arm support, and the patient's hand gripping the handgrip, causing the patient's arm to deviate from the path of applied irradiation during irradiation therapy. An armrest base can be configured to slide into a slotted portion of a corresponding armrest adapter for connecting the corresponding armrest unit to the armrest adapter. The armrest unit may include at least one of: an armrest base switch configured for locking and unlocking linear displacement of the armrest base; and an armrest bar switch configured for locking and unlocking linear displacement of the armrest arm support. The armrest unit may include at least one of the following: a reference mark on the armrest base to facilitate linear displacement of the armrest base by a selected distance; and a reference mark on the armrest bar to facilitate linear displacement of the armrest arm support by a selected distance. The armrest arm support may include a first surface connected to and perpendicular to the second surface, wherein the arm portion includes the patient's elbow or upper arm. Each armrest adapter may include a U-profile strip bracket configured to be mounted on one side of the back support member.Each armrest adapter may further include: a first stop, adjacent to a first end of the strap support and coupled to a back support member, the first stop being configured to prevent linear displacement of the strap support in a first direction; a second stop, adjacent to a second end of the strap support and coupled to the back support member, the second stop being configured to prevent linear displacement of the strap support in a second direction; and / or at least one knob, the at least one knob being configured to loosen or tighten the fastening of the strap support to the back support member. The handlebars can be detachably connected to the left and right armrests by engaging a first protrusion on a first end with a notch on the end of the left armrest, and a second protrusion on a second end with a notch on the end of the right armrest. The support platform may further include a platform adjuster configured to rotate at least one platform surface of the platform about at least one axis of rotation, or to displace at least one platform surface of the platform along at least one axis of displacement. The support platform may include a seat, and the patient may be in a seated position.

[0009] According to another aspect of this disclosure, a method for supporting a patient on a patient support platform during irradiation therapy is thus provided. The method includes the step of providing a support platform comprising: a pelvic support member configured to support the patient's pelvis; a back support member configured to support the patient's back; an armrest adapter including a left armrest adapter and a right armrest adapter; armrest units including a left armrest unit and a right armrest unit; and handrails. The method includes the steps of attaching the left armrest adapter to the left side of the back support member and attaching the right armrest adapter to the right side of the back support member. The method includes the steps of adjustingly attaching the left armrest unit to the left armrest adapter and adjustingly attaching the right armrest unit to the right armrest adapter. Each armrest unit includes: an armrest base linearly displaceable along a corresponding armrest adapter; an armrest bar extending distally forward of the armrest base and pivotable relative to the armrest base; and an armrest arm support linearly displaceable along the length of the armrest bar and configured to support portions of the patient's arm. The method includes the steps of: positioning the patient on a support platform and detachably connecting the handrail to the left armrest bar of the left armrest unit and the right armrest bar of the right armrest unit. The method includes the steps of: selectively adjusting the positioning of at least a portion of the armrest unit to accommodate the patient on the support platform such that each of the patient's arms is raised and extended forward of the body, wherein the arm portion of each arm is supported by a corresponding armrest arm support, and the patient's hand grips the handrail such that the patient's arm is deviated from the path of applied irradiation for irradiation therapy. The step of selectively adjusting the positioning of at least a portion of the armrest unit may include linearly displacing the armrest arm support along the length of the armrest bar of the armrest unit. The step of selectively adjusting the positioning of at least a portion of an armrest unit may include linearly shifting the armrest base of the armrest unit relative to an armrest adapter. The step of adjustably connecting the left armrest unit to the left armrest adapter and the right armrest unit to the right armrest adapter may include sliding the armrest base of the respective armrest unit into a slotted portion of the respective armrest adapter. The step of detachably connecting the handlebar may include engaging a first protrusion on a first end of the handlebar with a notch on the end of the left armrest and engaging a second protrusion on a second end of the handlebar with a notch on the end of the right armrest. The step of positioning the patient may include positioning the patient in a seated position. Irradiation therapy may include proton irradiation therapy. Brief description of the attached diagram

[0010] This disclosure will be more fully understood and appreciated from the following detailed description, in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram illustrating an irradiation therapy system constructed and operated according to embodiments of the present disclosure; Figure 2AThis is a rear-perspective exploded view of a first exemplary patient support platform for irradiation therapy constructed and operated according to embodiments of the present disclosure. Figure 2B It is constructed and operated according to embodiments of this disclosure. Figure 2A A rear view illustration of a first exemplary patient support platform; Figure 2C It is constructed and operated according to embodiments of this disclosure. Figure 2A A side view illustration of a first exemplary patient support platform; Figure 2D illustrates the construction and operation according to embodiments of the present disclosure. Figure 2A An exploded perspective view of the armrest unit of a first exemplary patient support platform; Figure 2E It is constructed and operated according to embodiments of this disclosure. Figure 2A A perspective view of the handrail unit of a first exemplary patient support platform; Figure 2F It is constructed and operated according to embodiments of this disclosure. Figure 2A A perspective sectional view of the handrail adapter of a first exemplary patient support platform; Figure 3A This is a front perspective view of a second exemplary patient support platform for irradiation therapy constructed and operated according to embodiments of the present disclosure; Figure 3B It is constructed and operated according to embodiments of this disclosure. Figure 3A A rear perspective view of the second exemplary patient support platform; Figure 3C It is constructed and operated according to embodiments of this disclosure. Figure 3A A side-view extended view illustration of a second exemplary patient support platform; Figure 4A It is constructed and operated according to embodiments of this disclosure. Figure 3A A front perspective view of a second exemplary patient support platform; Figure 4B It is constructed and operated according to embodiments of this disclosure. Figure 3A A side view illustration of a second exemplary patient support platform; Figure 4C It is constructed and operated according to embodiments of this disclosure. Figure 3A An extended perspective view of the front handrail of the second exemplary patient support platform; Figure 4D It is constructed and operated according to embodiments of this disclosure. Figure 3A An extended perspective view of the connection between the front handrail and the armrest of the second exemplary patient support platform; Figure 5AThis is a front perspective view of a third exemplary patient support platform for irradiation therapy constructed and operated according to embodiments of the present disclosure; Figure 5B It is constructed and operated according to embodiments of this disclosure. Figure 5A A side view illustration of a third exemplary patient support platform; Figure 6A This is a front perspective view of a fourth exemplary patient support platform for irradiation therapy constructed and operated according to embodiments of the present disclosure; Figure 6B It is constructed and operated according to embodiments of this disclosure. Figure 6A A side view illustration of the fourth exemplary patient support platform; Figure 6C It is constructed and operated according to embodiments of this disclosure. Figure 6A A side view illustration of the handrail unit of the fourth exemplary patient support platform; Figure 6D It is constructed and operated according to embodiments of this disclosure. Figure 6A A perspective view of the handrail unit and handle bar of the fourth exemplary patient support platform; Figure 6E It is constructed and operated according to embodiments of this disclosure. Figure 6A An extended perspective view of the handrail base of the handrail unit of the fourth exemplary patient support platform; Figure 6F It is constructed and operated according to embodiments of this disclosure. Figure 6A An extended perspective view of the handrail arm support and toggle switch of the handrail unit of the fourth exemplary patient support platform. Figure 7A This is a side perspective view of a fifth exemplary patient support platform for irradiation therapy constructed and operated according to embodiments of the present disclosure; Figure 7B It is constructed and operated according to embodiments of this disclosure. Figure 7A A perspective view of the connection of the handrail adapter of the fifth exemplary patient support platform; Figure 7C It is constructed and operated according to embodiments of this disclosure. Figure 7B An extended perspective view of the connection of the handrail adapter; Figure 7D It is constructed and operated according to embodiments of this disclosure. Figure 7B Another perspective extended view of the connection of the handrail adapter; Figure 7E It is constructed and operated according to embodiments of this disclosure. Figure 7A A perspective external view of the handrail unit of the fifth exemplary patient support platform; Figure 7F It is constructed and operated according to embodiments of this disclosure. Figure 7E A side view of the armrest unit; Figure 7G It is constructed and operated according to embodiments of this disclosure. Figure 7E An internal perspective view of the armrest unit; Figure 8A This is a front perspective view of a patient supported by an exemplary patient support platform constructed and operated according to embodiments of this disclosure; Figure 8B It is constructed and operated according to embodiments of this disclosure. Figure 8A A side view illustration of a patient supported by an exemplary patient support platform; Figure 9A This is a perspective view illustrating the first stage of the connection between the handlebars and the handrails of an exemplary patient support platform constructed and operated according to embodiments of the present disclosure. Figure 9B This is a perspective view illustrating the second stage of the connection between the handlebars and the handrails of the handrail unit of an exemplary patient support platform constructed and operated according to embodiments of this disclosure. Figure 9C This is a perspective view illustrating the third stage of the connection between the handlebars and the handrails of the handrail unit of an exemplary patient support platform constructed and operated according to embodiments of this disclosure. Figure 10A It is constructed and operated according to embodiments of this disclosure. Figure 7A An extended perspective view of an exemplary handle of the fifth exemplary patient support platform; Figure 10B illustrates the construction and operation according to embodiments of the present disclosure. Figure 7A An extended perspective view of the armrest arm support of the armrest unit of the fifth exemplary patient support platform; and Figure 10C It is constructed and operated according to embodiments of this disclosure. Figure 7A An extended perspective view of the handrail base of the handrail unit of the fifth exemplary patient support platform. Detailed Implementation

[0011] The disclosed embodiments overcome the disadvantages of the prior art by providing a novel support platform for supporting a patient during irradiation therapy to avoid interference from the patient's arm, regardless of the patient's positioning or alignment on the platform or the patient's physical characteristics.

[0012] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosed subject matter pertains. It will also be understood that terms such as those defined in commonly used dictionaries shall be interpreted as having the same meaning as they have in the context of the specification and claims and shall not be interpreted as having an idealized or overly formal meaning, unless expressly defined as such herein. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0013] It should be understood that although the terms first, second, etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. Rather, these terms are used only to distinguish one element, component, region, layer, and / or part from another element, component, region, layer, and / or part.

[0014] It should be understood that when a component is referred to as being "on," "attached" to, "operably coupled" to, "operably linked" to, "operably engaged" with, "connected" to, "joined" with, "contacts" with, or "added" to another component, it can be directly on, attached to, connected to, operably coupled to, operably engaged with, joined to, added to, or in contact with the other component, or intermediate components may be present. In contrast, when a component is referred to as "directly contacting" or "directly adding" to another component, no intermediate components or steps are present.

[0015] Whenever the terms “about” or “approximately” are used, they are intended to refer to a measurable value, such as a quantity, duration, etc., and are intended to cover variations that deviate from the specified value, as such variations are appropriate for performing the disclosed method.

[0016] For clarity, certain features of the disclosed subject matter described in the context of a single embodiment may also be provided in combination in a single embodiment. Conversely, for brevity, the various features of this disclosure described in the context of a single embodiment may also be provided individually or in any suitable sub-combination, or suited to any other described embodiment of this disclosure. Certain features described in the context of multiple embodiments are not considered essential features of those embodiments unless the embodiment cannot operate without those elements.

[0017] Whenever the terms "plurality" and "a plurality" are used, they are intended to include, for example, "multiple" or "two or more". The terms "plurality" or "a plurality" may be used throughout the specification to describe two or more parts, devices, elements, units, parameters, etc. The term "set," when used herein, may include one or more items. Unless expressly stated otherwise, the method embodiments described herein are not limited to a particular order or sequence. Furthermore, some of the methods described, or some of their elements, may occur or be performed synchronously, at the same point in time, or simultaneously.

[0018] Throughout this disclosure, references to "disclosed embodiments," "disclosed systems," and "disclosed methods" refer to examples of the inventive ideas, concepts, and / or manifestations described herein. The fact that some disclosed embodiments are described as exhibiting features or characteristics does not imply that other disclosed embodiments must share those features or characteristics.

[0019] This disclosure uses open-source language to indicate, for example, that certain embodiments "may" employ, involve, or include certain features. The use of the term "may" and other open-source terms is intended to indicate that while not every embodiment may employ a particular disclosed feature, at least one embodiment employs a particular disclosed feature.

[0020] The term “operator” is used herein to refer to any individual or group of people operating the methods or systems according to the disclosed embodiments, such as a practicing physician (e.g., a radiation oncologist, radiation therapy nurse, medical radiation physicist, radiation therapist, dosimeter, etc.) involved in performing and / or planning irradiation therapy procedures.

[0021] The terms “subject” and “patient” are used interchangeably herein and refer to an individual on whom the method or system according to the disclosed embodiments is operated, such as a person undergoing a proton therapy procedure. A subject can be any living entity, such as a person, human, or animal, characterized in that its body tissues have been subjected to irradiation therapy.

[0022] The terms “proton therapy” and “proton treatment” are used interchangeably herein to broadly encompass all forms of particle therapy or hadron therapy that apply an excited beam of ionized particles for radiotherapy purposes, including but not limited to protons, neutrons, and other types of ions (all of which are considered to be covered herein by the term “proton”). The terms “irradiation therapy” and “irradiation treatment” as used herein encompass proton therapy and other treatments involving the application of radiation.

[0023] The term “arm” is used broadly in this document to encompass all parts or anatomical segments of the subject’s arm, including but not limited to: upper arm; lower arm; forearm; elbow; shoulder; wrist; hand; fingers, etc.

[0024] The disclosed subject matter will become apparent from the following detailed description, which is carried out with reference to the accompanying drawings, wherein like reference numerals denote like elements. For a better understanding of certain embodiments and to show how they can be implemented, reference will now be made to the accompanying drawings by way of example only, throughout which similar reference numerals denote corresponding elements or portions.

[0025] Now for reference Figure 1 This is a schematic illustration of an irradiation therapy system (generally designated 110) constructed and operated according to embodiments of the present disclosure. The therapy system 110 includes an irradiation beam generator 112, an irradiation beam delivery device 114, an imager 116, a positioning verifier 117, a controller 118, a database 119, a patient support platform 122, and a platform adjuster 124. The controller 118 is communicatively coupled to the beam generator 112, the beam delivery device 114, the imager 116, the positioning verifier 117, the database 119, and the platform adjuster 124. The therapy system 110 is configured to be deployed for treating a patient 120 in a treatment room 100, which typically has shielding characteristics to limit radiation penetration outside the treatment area. Some of the components of the therapy system 110 may be located outside the treatment room 100.

[0026] The patient support platform 122 is configured to support the patient 120 during treatment or planning phases. In one embodiment, the patient support platform 122 includes a recliner, allowing the patient 120 to be in a seated position and supported by a pelvic support member 121 (e.g., a seat) and a back support member 123 (e.g., a backrest). Figure 1 (As shown in the diagram) support. The patient support platform 122 may also include or be converted into a bed, allowing the patient 120 to be in a supine or reclining position supported by a bed (i.e., horizontal with respect to the ground). The patient support platform 122 is mounted on an adjustable platform base 126 coupled to a platform adjuster 124. The pelvic support member 121 may be tilted relative to the platform base 126, such as defining an angle of tilt relative to a vertical axis (e.g., 10° tilt). The back support member 123 may be tilted relative to the platform base 126, such as defining an angle of tilt relative to a horizontal axis (e.g., 20° tilt).

[0027] Platform adjuster 124 is configured to adjust the position and / or orientation of platform 122 to correspondingly change the position and / or orientation of patient 120 along six degrees of freedom (6DOF). Platform adjuster 124 may include rotation adjustment mechanisms and / or translation adjustment mechanisms, the rotation adjustment mechanism being configured to adjust at least one rotation angle of platform 122 (e.g., pitch, yaw, roll rotation), and the translation adjustment mechanism being configured to translate platform 122 along at least one axis. For example, platform adjuster 124 may include a first mechanism for adjusting the height of platform base 126, and a second mechanism for rotating platform 122 about pitch, yaw, and roll axes respectively (e.g., by manipulating the orientation of platform base 126) (e.g., tilting patient 120 backward, tilting to the side, or rotating, respectively). For example, the rotation adjustment mechanism can rotate platform 122 (or platform base 126) about three orthogonal axes 125R, 127R, and 129R, wherein the first axis 125R is parallel to the floor 102 of the treatment room 100, the second axis 127R is parallel to the floor 102 and orthogonal to the first axis 125R, and the third axis 129R is orthogonal to the floor 102. Rotation of the patient support platform 122 causes the patient 120 to rotate about three orthogonal axes 125P, 127P, and 129P, wherein the first axis 125P is parallel to the longitudinal axis of platform base 126, the second axis 127P is parallel to the longitudinal axis of platform base 126 and orthogonal to the first axis 125P, and the third axis 129P is orthogonal to the longitudinal axis of platform base 126. In one embodiment, axes 125P, 127P, and 129P correspond to axes 125R, 127R, and 129R, respectively.

[0028] The irradiation beam generator 112 includes components and techniques for generating a proton beam for irradiation therapy, such as a particle accelerator. For example, generator 112 may include a cyclotron or synchrotron particle accelerator.

[0029] The irradiation beam delivery device 114 includes components and techniques for delivering at least one irradiation dose 115 from a generated proton beam to a patient 120. For example, the beam delivery device 114 may be operated using a pencil beam scanning (PBS) mechanism. The delivery device 114 may optionally be coupled to a rotatable stage (not shown) configured to position and orient the beam nozzles in 3D space around multiple axes for guiding the delivered irradiation dose 115 to a selected location and orientation (i.e., a selected isocenter). Alternatively, the treatment system 110 may operate without a rotatable stage, which provides increased treatment flexibility for different anatomical sites and can facilitate the upright positioning of the patient 120.

[0030] Imager 116 is configured to image patient 120, such as during treatment planning and / or treatment procedures. For example, imager 116 may be a medical imaging device used in a medical treatment setting, including but not limited to: computed tomography (CT) scanners, four-dimensional computed tomography (4DCT) scanners, X-ray computed tomography (X-ray CT) scanners, optical coherence tomography (OCT) scanners, magnetic resonance imaging (MRI) scanners, and ultrasound imagers. Typically, imager 116 may include any type of imaging sensor capable of acquiring and storing image representations of objects or scenes. Therefore, the term "image" as used herein refers to any form of output from such imager, including any optical or digital representation of a scene acquired at any wavelength or spectral region, and includes single image frames and sequences of image frames (i.e., "video images"). An image rotation mechanism (not shown) may be configured to rotate imager 116 about at least one axis to enable imaging from a selected direction or viewpoint.

[0031] Positioning verifier 117 is configured to verify that patient 120 is properly positioned in a designated placement for treatment. Positioning verifier 117 may be embodied, for example, by an X-ray imaging device comprising a set of complementary X-ray emitter and detector pairs located around the treatment isocenter, wherein the respective pairs are perpendicularly aligned with each other (i.e., to achieve three-dimensional positioning). Alternative methods for position verification may include surface-guided radiotherapy (SGRT) 3D imaging technology and cone-beam computed tomography (CBCT) imaging technology.

[0032] The controller 118 is configured to selectively control the operation of components of the treatment system 110 and to dynamically adjust their operating parameters. The controller 118 is also configured to receive and provide instructions and data to / from the components of the system 110 and to perform the necessary data processing.

[0033] Database 119 stores relevant information to be retrieved and processed by processor 114, such as captured images. Database 119 can be implemented by one or more local servers or by remote and / or distributed servers, such as in a cloud storage platform.

[0034] Information can be transmitted between components of the treatment system 110 using any type of channel or network model and any data transmission protocol (e.g., wired, wireless, radio, WiFi, Bluetooth, etc.) via any suitable data communication channel or network. The components and devices of the treatment system 110 can be based on hardware, software, or a combination thereof. It should be understood that the functionality associated with each device or component of the treatment system 110 can be distributed across multiple devices or components, which can be located in a single location or multiple locations. For example, the functionality associated with controller 118 can be distributed between separate components, such as at least one control unit and at least one processing unit (e.g., which may be part of a server or remote computer system accessible via a communication network, such as a cloud computing platform). Controller 118 can also be integrated, at least partially, with other components of system 110 (e.g., incorporated within a dedicated local control unit).

[0035] The treatment system 110 may optionally include and / or be associated with additional components not shown in the figures to implement the disclosed subject matter. For example, the treatment system 110 may include a user interface (not shown) for allowing a user to provide instructions or control various parameters or settings associated with the system 110, and / or a display device (not shown) for visually displaying information related to the operation of the system 110.

[0036] According to one aspect of this disclosure, the patient support platform is configured to facilitate the repositioning of at least one of the patient's arms during irradiation therapy. (Reference) Figure 2A , Figure 2B , Figure 2C . Figure 2A This is a rear-perspective exploded view of a first exemplary patient support platform (generally labeled 222) constructed and operated according to embodiments of the present disclosure for irradiation therapy. Figure 2B This is a rear view diagram of the support platform 222. Figure 2CThis is a side view of the support platform 222. The support platform 222 includes a pelvic support member 223, a back support member 224, a head support member 226, and foot support members 228 and 229. The support platform 222 can support a patient (not shown) in different positions or alignments, such as a sitting position (upright or reclined) or a lying (horizontal) position. The pelvic support member 223 is adapted to support the patient's pelvis, such as a seat for supporting the pelvis of a seated patient, and can be adjustable, such as tilting relative to a vertical plane along an inclined axis. The back support member 224 is adapted to support the patient's back, such as a backrest for supporting the back of a seated patient, and can be adjustable, such as tilting relative to a horizontal plane along an inclined axis. The head support member 226 is adapted to support the patient's head, such as a headrest for supporting the head of a seated patient, and can be adjustable, such as tilting relative to a horizontal plane along an inclined axis. Foot support members 228 and 229 are adapted to support the patient's feet; for example, left foot support member 228 supports the left foot of the seated patient, and right foot support member 229 supports the right foot of the seated patient. The foot support members may be adjustable, for example, capable of moving relative to the horizontal plane in both forward and backward directions. Foot support members 228 and 229 are connected to pelvic support member 223 via vertically aligned base member 227. Support platform 222 may be mounted on or connected to at least one platform adjustment member (not shown), which is configured to provide rotational and / or translational adjustment of one or more platform surfaces of platform 222 or support members 223, 224, 226, 227, 228, and 229.

[0037] The support platform 222 also includes at least one handrail adapter 230 and at least one handrail unit 250. The first handrail adapter 230 is mounted on a first side (e.g., the right side) of the back support member 224 of the platform 222. The handrail adapter 230 includes a strip bracket 232 mounted on the first side (e.g., the right side) of the back support member 224 by one or more mechanical fasteners (e.g., screws). For example, the strip bracket 232 may be a U-shaped or U-shaped bracket, mounted such that the inner surface of the strip bracket 232 engages with a mounting strip disposed on one side of the back support member 224. A first stop 233 is coupled to the back support member 224 adjacent to a first (e.g., top) end of the strip bracket 232, and a second stop 236 is coupled to the back support member 224 adjacent to a second (e.g., bottom) end of the strip bracket 232. For example, the first stop 233 may be a small bracket mounted on one side of the back support member 224 above the strip bracket 232 of the armrest adapter 230 to prevent displacement of the strip bracket 232 (e.g., to prevent slippage in the upward direction). The second stop 236 may be implemented by a short flange projecting substantially perpendicular to the back support member at the bottom corner of the back support member 224 to prevent displacement of the strip bracket 232 (e.g., to prevent slippage in the downward direction). One or more knobs 234 may be configured to loosen or tighten the fasteners of the armrest adapter 230, for example, enabling upward or downward adjustment of the strip bracket 232 along the side of the back support member 224. The armrest adapter 230 may be detachably mounted on the support platform 222 to allow for removal and reinstallation on different support platforms. Exemplary dimensions of the armrest adapter 230 may include: a width of approximately 45-50 mm at a first end on the first side; a width of approximately 75-85 mm at a second end on the first side; and a length of approximately 535-550 mm. The support platform 222 also includes a second armrest adapter 240 mounted on a second side (e.g., the left side) of the back support member 224, wherein the second armrest adapter 240 is substantially similar to the first armrest adapter 230.

[0038] The first handrail unit 250 is adapted to be mounted on the first handrail adapter 230. See further reference to Figure 2D. Figure 2E and Figure 2F Figure 2D is an exploded perspective view of the armrest unit 250 supporting the platform 222. Figure 2E This is a perspective view of the armrest unit 250 supporting the platform 222. Figure 2FThis is a perspective cross-sectional view of the handrail adapter 230 supporting the platform 222. The handrail unit 250 includes a handrail base 252, a handrail bar 254 extending distally, and a handrail arm support 255. The handrail base 252 is configured to connect with the strip support 232 of the handrail adapter 230. Specifically, the handrail base 252 can slide along the slotted portion of the strip support 232 (e.g., ...). Figure 2F (As shown), and then fastened, for example by means of one or more screws 253 (or other mechanical fasteners) inserted through aligned holes extending through the handrail base 252 and the strip bracket 232. The handrail base 252 may be implemented by a rod having a longitudinally extending ridge adapted to engage with a longitudinally extending recess in the strip bracket 232 defining a groove, so as to facilitate the slidable mounting of the handrail base 252 and the strip bracket 232 for connecting the handrail unit 250 to the handrail adapter 230.

[0039] Handrail 254 extends distally from an end (e.g., the top) of handrail base 252, for example, in a forward direction for the patient (i.e., along a horizontal axis). Handrail 254 can be linearly displaced relative to handrail base 252, for example, extended and retractable along its longitudinal axis. Handrail 254 can optionally pivot relative to handrail base 252, for example, enabling it to move upward or downward. Handrail 254 can be configured as a strip with a solid portion surrounding an internal gap 251 extending along the length of handrail 254. A portion of arm support 255 can engage with the internal gap 251 of handrail 254 to allow adjustable displacement of arm support 255 along the length of handrail 254. Handrail 254 may include reference markings 258 for distance measurements (e.g., centimeters or millimeters), for example, along the bottom section of the bar 254 (e.g., as shown in Figure 2D). Figure 2E (As shown), so that the arm support 255 can be moved a selected distance. The handrail 254 can be connected to the handle 259 ( Figure 2C ).

[0040] An arm support 255 is movably coupled to a handrail 254. The arm support 255 is configured to support a patient's arm portion, such as the forearm, elbow, wrist, and / or hand. The arm support 255 may be configured as an L-shaped support bracket having a first surface (e.g., a substantially horizontal surface) connected to and perpendicular to a second surface (e.g., a substantially vertical surface), such that the arm portion (e.g., the elbow) is supported at the bottom by the first surface of the arm support 255 and laterally by the second surface of the arm support 255. The arm support 255 may be provided with a ridge (e.g., on its second surface) for engaging with an internal gap 251 in the handrail 254 to allow the arm support 255 to move along the length of the handrail 254. The arm support 255 may include a toggle switch 257 for locking (i.e., preventing) or unlocking (i.e., allowing) the arm support 255 to move along the handrail 254. For example, switch 257 can be switched to a first state (e.g., by rotating the lever in a first direction) to achieve linear displacement of the arm support 255 (i.e., closer to or further away from the patient) by sliding the arm support 255 along the gap 251 of the handrail 254, and switch 257 can be switched to a second state (e.g., by rotating the lever in a second direction) to lock the arm support 255 in a fixed position along the handrail 254. The arm support 255 may optionally pivot relative to the handrail 254, for example, about an axis extending along the length of the handrail 254, such as by left or right rotation.

[0041] The handrail adapter 230 and handrail unit 250 may be made of one or more suitable materials, such as plastic or thermoplastic. Exemplary dimensions of the handrail unit 250 may include: a horizontal distance of approximately 380-390 mm between the first and second ends of the handrail bar 254; a vertical distance of approximately 665-675 mm between the distal end of the handrail base 252 and the distal end of the handrail bar 254; and an inclination angle of approximately 120° between the handrail base 252 and the handrail bar 254. The support platform 222 may also include a second handrail unit (not shown) adapted for mounting on the second handrail adapter 240, wherein the second handrail unit is similar to the first handrail unit 250.

[0042] According to one aspect of this disclosure, the forward bar can be disposed between the handrail units, for example, connecting the left handrail unit and the right handrail unit. (Reference) Figure 3A , Figure 3B , Figure 3C . Figure 3A This is a front perspective view of a second exemplary patient support platform (generally labeled 322) constructed and operated according to embodiments of the present disclosure for irradiation therapy. Figure 3B This is a rear perspective view of the support platform 322. Figure 3C This is an extended side view of the support platform 322. The support platform 322 is generally similar to the support platform 222. Figure 2AA forward-facing handlebar 374 is added between the right armrest bar 354 of the right armrest unit 350 and the left armrest bar 364 of the left armrest unit 360. The support platform 322 includes a pelvic support member 323, a back support member 324, a head support member 326, and foot support members 328 and 329. The right armrest unit 350 is detachably connected to the right armrest adapter 330 of the support platform 322, and the left armrest unit 360 is detachably connected to the left armrest adapter 340 of the support platform 322. The right armrest unit 350 includes a right armrest base 352, a distally extending right armrest bar 354, and a right armrest arm support 355, and the left armrest unit 360 includes a left armrest base 362, a distally extending left armrest bar 364, and a left armrest arm support 365, all of which are generally similar to the corresponding elements of the support platform 222 described above. Support platform 322 is configured to support a patient (not shown), such as a patient in a seated position, wherein the patient's right arm (e.g., right forearm and / or right elbow) is supported by right armrest support 355, and the patient's left arm (e.g., left forearm and / or left elbow) is supported by left armrest support 365, and the patient's hand grips or holds handle bar 374. At least a portion of armrest units 350, 360 may be adjustable, thereby causing a corresponding adjustment of handle bar 374. For example, the armrest bases 352, 362 of the respective armrest units 350, 360 may be displaced upward, causing the handle bar 374 to rise (e.g., toward the patient's head), so that the patient's arms and hands are raised to avoid interference with radiation to the patient's lower body area (e.g., lower chest). Alternatively, the armrest bases 352 and 362 of the corresponding armrest units 350 and 360 can be shifted downwards, causing the handle bar 374 to be lowered (e.g., toward the patient's pelvis and legs), allowing the patient's arms and hands to be lowered to avoid interference with irradiation of the patient's upper body area (e.g., upper chest). The armrest units 350 and 360 can be moved to a default position such that the armrest bars 354 and 364 are substantially forward-facing and perpendicular to the ground, and the handle bar 374 is substantially in front of the patient (e.g., in front of the chest). This positioning can be used, for example, during pauses between irradiation doses or treatment intervals, or during treatment of body parts away from the chest or abdomen where the arms may not be obstructive, such as during treatment of the patient's head / neck or legs / feet. The shape and size of the handle bar 374 can be designed for easy gripping. For example, the handle bar 374 may include curvature to facilitate positioning of the patient’s left and right hands, and may include at least one dedicated handle, such as a rubber gripping material disposed around one or more portions of the handle bar 374 (e.g., a first handle at the left-hand portion and a second handle at the right-hand portion), to provide traction friction and assist gripping.Note that the patient's grip on the handle 374 is optional, and the patient may alternatively position his / her arms in different ways to avoid potential interference with the applied radiation, for example by placing his / her arms and hands behind his / her head.

[0043] Further reference Figure 4A , Figure 4B , Figure 4C , Figure 4D . Figure 4A This is a front perspective view of the support platform 322. Figure 4B This is a side view of the support platform 322. Figure 4C This is a perspective extended view of the front handlebar 374 supporting the platform 322. Figure 4D This is a perspective extended view illustrating the connection between the front handlebar 374 and the handrail 354 of the support platform 322. The front handlebar 374 can be connected to the handrail 354, 364 by one or more mechanical fasteners (e.g., screws or pins 377), which are inserted through alignment holes extending through the distal end of the handrail 354 and the corresponding end of the handlebar 374 (e.g., ...). Figure 4D (As shown).

[0044] Now for reference Figure 5A and Figure 5B . Figure 5A This is a front perspective view of a third exemplary patient support platform (generally labeled 382) constructed and operated according to embodiments of the present disclosure for irradiation therapy. Figure 5B This is a side view of support platform 382. Support platform 382 is generally similar to support platform 322. Figure 3A , Figure 4A The handlebar 384 is integrally embedded with the right armrest 354 and left armrest 364, rather than being mechanically connected to them. For example, the handlebar 384, right armrest 354, and left armrest 364 can be structurally formed as a common integrated unit, for example, using suitable manufacturing techniques. Alternatively, the handlebar 384 can be detached from the armrests 354 and 364 to facilitate the placement of the patient on or removal from the support platform 382, ​​and the handlebar 384 can be reattached to the armrests 354 and 364 as needed. The handlebar 384 may be characterized by having at least one different feature relative to the handlebar 374 on the platform 322, such as a different shape, different thickness, different grip material, and / or different size.

[0045] Now for reference Figure 6A , Figure 6B , Figure 6C , Figure 6D , Figure 6E , Figure 6F . Figure 6AThis is a front perspective view of a fourth exemplary patient support platform (generally labeled 422) constructed and operated according to embodiments of the present disclosure for irradiation therapy. Figure 6B This is a side view of the support platform 422. Figure 6C This is a side view of the handrail unit 350 supporting the platform 422. Figure 6D This is a perspective view of the handrail units 350 and 360 and the handle bar 384 supporting the platform 422. Figure 6E This is a perspective extended view of the armrest base 352 of the armrest unit 350 supporting the platform 422. Figure 6F This is a perspective extended view of the armrest arm support 355 and toggle switch 357 of the armrest unit 350 of the support platform 422. The support platform 422 is generally similar to the support platform 382. Figure 5A The support platform 422 includes a right armrest unit 350 detachably connected to a right armrest adapter 330, a left armrest unit 360 detachably connected to a left armrest adapter 340, and a forward-facing handlebar 384 integrally embedded with the right armrest bar 354 and the left armrest bar 364. A pair of armrest adapter levers 334 (similar to...) Figure 2A , Figure 2B The knob 234 depicted is configured to adjust and reposition the armrest adapter 330 relative to the back support member 324 of the support platform 422. For example, the lever 334 can be rotated in a first direction to allow the armrest adapter 330 to be displaced, for example, by sliding up or down along the side of the back support member 324, and the lever 334 can be rotated in a second direction to lock the armrest adapter 330 in a fixed position. A corresponding lever 344 (in...) Figure 6D (As shown in the image) It is configured to enable adjustment and repositioning of the left armrest adapter 340.

[0046] At least one armrest base switch 353 is configured to adjust and reposition the armrest base 352 relative to the armrest adapter 330. For example, switch 353 can be switched to a first state (e.g., by rotating a lever in a first direction) to achieve linear displacement of the armrest base 352 by sliding it up or down along the armrest adapter 330, and switch 353 can be switched to a second state (e.g., by rotating a lever in a second direction) to lock the armrest base 352 in a fixed position. The armrest adapter 330 may include reference markings for distance measurements (e.g., centimeters or millimeters), for example, along the outer surface of the armrest adapter 330 (e.g., the front facing the support platform 422, such as...). Figure 6E (as shown), so that the handrail base 352 can be adjusted to the selected displacement.

[0047] At least one handrail arm support switch 357 (similar to Figure 2D, Figure 2E The switch 257 depicted is configured to adjust and reposition the arm support 355 relative to the handrail 354. For example, switch 357 can be switched to a first state (e.g., by rotating a lever in a first direction) to achieve linear displacement of the arm support 355 by sliding it longitudinally (i.e., forward or backward) along the gap 351 of the handrail 354, and switch 357 can be switched to a second state (e.g., by rotating a lever in a second direction) to lock the arm support 355 in a fixed position. The handrail 354 may include reference markings for distance measurements (e.g., centimeters or millimeters), such as along the outer surface of the handrail 354 (e.g., the side facing the support platform 422, as shown). Figure 6D , Figure 6F (as shown in the diagram) so that the arm support 355 can be adjusted to a selected displacement.

[0048] refer to Figure 7A , Figure 7B , Figure 7C , Figure 7D . Figure 7A This is a side perspective view of a fifth exemplary patient support platform (generally labeled 522) constructed and operated according to embodiments of the present disclosure for irradiation therapy. Figure 7B This is a perspective view of the connection of the handrail adapter 530 supporting the platform 522. Figure 7C This is a perspective extended view of the connection of the handrail adapter 530 to the support platform 522. Figure 7D This is another perspective extended view illustrating the connection of the armrest adapter 530 to the support platform 522. The support platform 522 is generally similar to the support platform 382. Figure 5A ) and support platform 422 ( Figure 7A The support platform 522 includes a right armrest unit 550 detachably connected to a right armrest adapter 530, and a left armrest unit 560 detachably connected to a left armrest adapter 540. The armrest adapter 530 is connected to a back support member 524 of the support platform 522 (e.g., Figure 7A , Figure 7B (As shown). Adapter joystick 534 (similar to...) Figures 6A-6E The control lever 334 shown is configured to adjust and reposition the armrest adapter 330. The armrest base control lever switch 553 (similar to...) Figure 6C The joystick switch 353 shown is configured to enable adjustment and repositioning of the armrest base 552 relative to the armrest adapter 530. Figure 7C The image shows the handrail base 552 sliding along a slotted portion of the strip support 532 for connecting the handrail unit 550 to the handrail adapter 530. Figure 7DThe image shows the armrest base 552 sliding along a slotted portion of the strip support 532 for connecting the armrest unit 550 to the armrest adapter 530. Further reference... Figure 7E , Figure 7F , Figure 7G . Figure 7E This is a perspective external view of the armrest unit 550 that supports the platform 522. Figure 7F This is a side external view of the armrest unit 550 that supports the platform 522. Figure 7G This is an internal perspective view of the armrest unit 550 that supports the platform 522.

[0049] Now for reference Figure 8A and Figure 8B . Figure 8A This is a front perspective view of a patient supported by an exemplary patient support platform 522 constructed and operated according to embodiments of the present disclosure. Figure 8B This is a side view of a patient supported by support platform 522. Patient 520 is positioned in a seated position on support platform 522 such that the patient's right arm (e.g., right elbow and upper arm) is supported by the right armrest arm support 555 of right armrest unit 550, and the patient's left arm (e.g., left elbow and upper arm) is supported by the left armrest arm support 565 of left armrest unit 560. Patient 520's hand is gripping handle bar 574. It should be understood that gripping handle bar 574 can be optional, and patient 520's hand can alternatively be positioned in different ways, such as behind the head. Armrest units 550, 560 and handlebars 574 can be repositioned, for example by linearly shifting the armrest bases 552, 562 and / or handlebars 554, 564 of the respective armrest units 550, 560, so that the patient 520's arms and hands are not in the trajectory of the applied radiation (e.g., directed towards the patient 520's chest area). Handbars 574 can be guided to a selected alignment position (i.e., angular position) according to the patient 520's preference. For example, a forward alignment of handlebars 574 (e.g., directly in front of the patient, such as substantially parallel to the ground) may be more comfortable for some patients than an elevated or lowered alignment. The positioning of armrest units 530, 540 and armrest arm supports 555, 565 can be adjusted to accommodate different patients, for example, based on the patient 520's arm length. It should be understood that during the imaging phase of irradiation therapy (such as before establishing a treatment plan) and during the treatment application phase of irradiation therapy, the patient may be placed in an arm displacement position (e.g., where the arm portion is supported by arm supports 555, 565, and optionally where the hand holds a handle 574).

[0050] refer to Figure 9A , Figure 9B , Figure 9C . Figure 9A This is a perspective view illustrating the first stage of the connection between the handlebar 574 of an exemplary support platform 522 constructed and operated according to embodiments of the present disclosure and the handrail 554 of the handrail unit. Figure 9B This is a perspective view of the second stage of the connection between the handlebar 574 and the handrail 554 of the handrail unit of the support platform 522. Figure 9C This is a perspective view illustrating the third stage of the connection between the handlebar 574 and the handrail 554 of the handrail unit of the support platform 522. In an exemplary embodiment, the handlebar 574 includes a first circular protrusion 587 extending outwardly from the bottom of its first end, and the handrail 554 includes a semi-circular tapered edge defining a first circular recess 588 at its distal end, wherein the size and shape of the recess 588 are adapted to the size and shape of the protrusion 587 such that the protrusion 587 can be securely engaged within the recess 588. The handlebar 574 also includes a second circular protrusion 587 (not shown) (similar to the first protrusion 587) extending outwardly from the bottom of its second end, and a second handrail 564 (not shown) of the support platform 522 is configured with a corresponding semi-circular tapered edge defining a second recess 588 (not shown) (similar to the first recess 588 of the handrail 554) at its distal end, wherein the second recess 588 is adapted to receive and securely engage the second protrusion 587. When the handlebar 574 separates from the handrail units 550 and 560 of the support platform 522, the protrusion 587 of the handlebar 574 disengages from the corresponding recess 588 of the handrail 554 and 564 (e.g., Figure 9A (As shown). To attach the handlebar 574 to the armrest units 550 and 560, the protrusion 587 of the handlebar 574 engages with the corresponding recess 588 of the armrest 554 and 564 (as shown). Figure 9B (As shown). After engagement, the handlebar 574 can pivot relative to the armrests 554 and 564 (as shown). Figure 7C (as shown), so as to lock the handlebar 574 in the proper position and prevent accidental disengagement.

[0051] refer to Figure 10A This is a perspective extended view of an exemplary handlebar 574 of the support platform 522. The handlebar 574 may be provided in different sizes to accommodate different patients, for example, having a length selected according to the patient's arm length and / or body size.

[0052] Further reference Figure 10B,This is a perspective extended view of the armrest arm support 555 of the armrest unit 550 supporting the platform 522. The position of the armrest arm support 555 relative to the armrest bar 554 can be adjusted, for example, by unlocking the joystick switch 557 (i.e., by turning the joystick in the unlocking direction) and sliding the armrest arm support 555 forward or backward along the internal gap 551 of the armrest bar 554 to accommodate a particular patient, such as based on the patient's arm length. For example, for a patient with a longer arm, the arm support 555 can move forward (i.e., in the forward direction), and for a patient with a shorter arm, the arm support 555 can move backward (i.e., in the backward direction). The armrest arm support 555 can then be secured to the selected position by locking the joystick switch 557 (i.e., by turning the joystick in the locking direction) to prevent unintentional movement.

[0053] Further reference Figure 10C This is a perspective extended view of the armrest base 552 of the armrest unit 550 supporting the platform 522. The position of the armrest base 552 relative to the armrest adapter 530 can be adjusted, for example by unlocking the joystick switch 553 (i.e., by turning the joystick in the unlocking direction) and sliding the armrest base 552 up or down along a section of the armrest adapter 530 to accommodate a particular patient, such as based on the patient's arm length. For example, for a patient with a shorter arm, the armrest base 552 can be moved upward, and for a patient with a longer arm, the armrest base 552 can be moved downward. The armrest base 552 can then be secured in the selected position by locking the joystick switch 553 (i.e., by turning the joystick in the locking direction) to prevent accidental movement.

[0054] It should be understood that the disclosed embodiments can allow for patient support during irradiation therapy while avoiding interference from one or more of the patient's arms, particularly for patients being treated in a seated position (whether upright or tilted). The mechanism for arm repositioning can accommodate different patients with different body characteristics (e.g., different arm features, particularly different arm lengths and proportions relative to the patient's body). The disclosed mechanism can be applied to different irradiation treatments and to different patient positioning and alignment on the support platform.

[0055] According to one aspect of this disclosure, a method is provided for supporting a patient on a patient support platform during irradiation therapy. In a first step, the support platform is provided. (Reference) Figure 3A , Figure 3B , Figure 3C The support platform 322 includes a pelvic support component 323, a back support component 324, a right armrest adapter 330, a left armrest adapter 340, a right armrest unit 350, a left armrest unit 360, and a handle bar 374.

[0056] In the next step, the left armrest adapter is connected to the left side of the platform's back support member, and the right armrest adapter is connected to the right side of the back support member. (See reference) Figure 2A , Figure 2B , Figure 2C The right armrest adapter 230 is mounted to the right side of the support platform 222, and the left armrest adapter 240 is mounted to the left side of the support platform 222. For example, the strip bracket 232 of the right armrest adapter 230 is mounted to a mounting element on the right side of the back support member 224 of the support platform 222. A first stop 233 is attached to the back support member 224 adjacent to a first (e.g., top) end of the strip bracket 232, and a second stop 236 is attached to the back support member 224 adjacent to a second (e.g., bottom) end of the strip bracket 232 to prevent displacement of the strip bracket 232. At least one knob 234 is provided for loosening or tightening the fastener of the armrest adapter 230 to allow the strip bracket 232 to be adjusted up or down along the right side of the back support member 224.

[0057] In the next step, the left armrest unit is adjustablely connected to a left armrest adapter, and the right armrest unit is adjustablely connected to a right armrest adapter. Each armrest unit includes an armrest base, an armrest bar, and an armrest support. (Reference) Figure 2A Figure 2D Figure 2E , Figure 2F The right armrest unit 250 is connected to the right armrest adapter 230 of the support platform 222, and the left armrest unit 260 is connected to the left armrest adapter 240 of the support platform 222. For example, the armrest base 252 of the right armrest unit 250 slides into a slotted portion of the strip support 232 of the right armrest adapter 230 and is then secured by a screw 253 inserted through an alignment hole in the armrest base 252 and the strip support 232. The armrest base 252 can be linearly displaced along the armrest adapter 250. The armrest bar 254 extends distally forward of the patient from the top of the armrest base 252. The armrest bar 254 can pivot relative to the armrest base 252, for example, being configured to move upward or downward. The armrest arm support 255 for supporting the patient's arm is movably connected to the armrest bar 254 and can be linearly displaced along the length of the armrest bar 254. The reference marks on the handrail 254 facilitate the displacement of the arm support 255 by a selected distance. The handlebar 259 can be connected between the right handrail 254 and the left handrail of the left handrail unit 260.

[0058] In the next step, the patient will be positioned on the support platform. (Reference) Figure 8A , Figure 8BThe patient 520 is positioned in a seated position on the support platform 522. The patient 520's right arm (e.g., right elbow and upper arm) may be supported by the right armrest arm support 555 of the right armrest unit 550, and the patient 520's left arm (e.g., left elbow and upper arm) may be supported by the left armrest arm support 565 of the left armrest unit 560. It should be noted that at least part of the previous step may be performed after the patient has been positioned on the support platform. For example, after the patient 520 is seated on the support platform 522, one or more armrest units 550, 560 may be attached to the corresponding armrest adapters 530, 540. In another example, one or more armrest unit accessories may be added to the armrest units at a later stage, such as attaching armrest arm supports 555, 565 to the corresponding armrest units 550, 560 after the patient 520 is seated on the support platform 522.

[0059] In the next step, the handlebars are detachably connected to the left armrest of the left armrest unit and the right armrest of the right armrest unit. (Reference) Figure 3A , Figure 3B , Figure 3C The handlebar 374 is detachably connected between the right armrest bar 354 of the right armrest unit 350 and the left armrest bar 364 of the left armrest unit 360. The patient's hand can grip the handlebar 374, or alternatively, it can be positioned, for example, behind the head.

[0060] In the next step, the positioning of at least a portion of the armrest unit is selectively adjusted to accommodate the patient positioned on the support platform, such that each of the patient's arms is raised and extended in front of the body, with the forearm portion of each arm supported by a corresponding armrest arm support, and the patient's hands gripping the handles, causing the patient's arms to deviate from the path of the applied irradiation. (Reference) Figure 10A Figure 10B Figure 10CThe positions of the armrest arm support 555, armrest bar 554, and / or armrest base 552 can be adjusted to accommodate the body characteristics of the patient 520. For example, the arm support 555 can be repositioned by unlocking the joystick switch 557 and sliding the arm support 555 forward or backward along the internal gap 551 of the armrest bar, such as moving the arm support 555 forward (forward) for a patient with a longer arm or moving the arm support 555 backward (rear) for a patient with a shorter arm. In another example, the armrest base 552 can be repositioned by unlocking the joystick switch 553 and sliding the armrest base 552 up or down along a section of the armrest adapter 530, such as moving the armrest base 552 up for a patient with a shorter arm or moving the armrest base 552 down for a patient with a longer arm. The armrest bar 554 can also be optionally adjusted, for example, by extending or retracting the length of the armrest bar 554, or by pivoting the armrest bar 554 relative to the armrest base 552. Handrail 574 can also be optionally adjusted, for example, by detaching handrail 574 from armrest units 550, 560 and attaching a new handrail with at least one different feature (e.g., different shape, different thickness, different grip material, and / or different size). After adjustment, each of the patient 520's arms is raised and extended in front of the body, with the patient 520's right arm portion supported by right armrest support 555 and the patient 520's left arm portion supported by left armrest support 565, and the patient 520's hands gripping handrail 574 (or alternatively positioned, e.g., behind the head). This displaces the patient 520's arms from the trajectory of irradiation to be applied during irradiation therapy (such as irradiation directed towards the patient 520's chest area).

[0061] After the patient has been positioned on the support platform, irradiation therapy can be performed according to the treatment plan during subsequent treatment phases. During treatment, the patient's arm is supported by the armrest arm support of the armrest unit, causing the patient's arm to deviate from the path of the applied irradiation to avoid interference.

[0062] While certain embodiments of the disclosed subject matter have been described to enable those skilled in the art to practice the invention, the foregoing description is intended to be exemplary only. It should not be used to limit the scope of the disclosed subject matter, which should be determined by reference to the appended claims.

Claims

1. A patient support platform for supporting a patient during irradiation therapy, the platform comprising: A pelvic support component configured to support the patient's pelvis; A back support component configured to support the patient's back; An armrest adapter, the armrest adapter comprising a left armrest adapter connected to the left side of the back support member and a right armrest adapter connected to the right side of the back support member; and An armrest unit comprising a left armrest unit adjustablely connected to the left armrest adapter and a right armrest unit adjustablely connected to the right armrest adapter, each of the armrest units comprising: - Handrail base, which is linearly movable along a corresponding handrail adapter; - A handrail extending distally forward of the handrail base towards the patient and pivotable relative to the handrail base; and - An armrest support member, which is linearly displaceable along the length of the armrest bar and is configured to support the patient's arm portion, and A handlebar, detachably connected to the left armrest of the left armrest unit and the right armrest of the right armrest unit, is configured for the patient's hand to grasp when the arm portion is supported. At least a portion of the armrest unit is selectively adjustable to accommodate a patient located on the support platform, such that each of the patient's arms is raised and extended in front of the body, with the arm portion of each arm supported by a corresponding armrest arm support, and the patient's hand gripping the handle, causing the patient's arm to deviate from the path of the applied irradiation therapy.

2. The patient support platform according to claim 1, wherein, The handrail base is configured to slide into the slotted portion of the corresponding handrail adapter in order to connect the corresponding handrail unit to the handrail adapter.

3. The patient support platform according to claim 1, wherein, The armrest unit includes at least one of the following: An armrest base switch, configured to lock and unlock linear displacement of the armrest base; and A handrail switch configured to lock and unlock the linear displacement of the handrail arm support.

4. The patient support platform according to claim 1, wherein, The armrest unit includes at least one of the following: The reference marks on the handrail base facilitate linear displacement of the handrail base by a selected distance. and The reference marks on the handrail are used to facilitate the linear displacement of the handrail arm support by a selected distance.

5. The patient support platform of claim 1, wherein the armrest arm support includes a first surface connected to and perpendicular to the second surface, wherein the arm portion includes the patient's elbow or upper arm.

6. The patient support platform according to claim 1, wherein, Each of the armrest adapters includes a U-shaped strip bracket configured for mounting on one side of the back support member.

7. The patient support platform according to claim 6, wherein, Each of the handrail adapters also includes: A first stop, the first stop being connected to the back support member adjacent to a first end of the strip support, the first stop being configured to prevent linear displacement of the strip support in a first direction; A second stop, connected to the back support member adjacent to the second end of the strip support, is configured to prevent linear displacement of the strip support in a second direction; and At least one knob, the at least one knob being configured to loosen or tighten the fastening of the strip bracket to the back support member.

8. The patient support platform according to claim 1, wherein, The handlebar is detachably connected to the left and right handrails by engaging a first protrusion on the first end of the handlebar with a notch on the end of the left handrail and by engaging a second protrusion on the second end of the handlebar with a notch on the end of the right handrail.

9. The patient support platform of claim 1, further comprising a platform adjuster configured to rotate at least one platform surface of the platform about at least one rotation axis, or to displace at least one platform surface of the platform along at least one displacement axis.

10. The patient support platform of claim 1, wherein the patient support platform includes a seat and wherein the patient is in a seated position.

11. A method for supporting a patient on a patient support platform during irradiation therapy, the method comprising the steps of: A support platform is provided, the support platform comprising: a pelvic support member configured to support a patient's pelvis; a back support member configured to support a patient's back; an armrest adapter including a left armrest adapter and a right armrest adapter; armrest units including a left armrest unit and a right armrest unit; and handrails; Connect the left armrest adapter to the left side of the back support member, and connect the right armrest adapter to the right side of the back support member; The left armrest unit is adjustablely connected to the left armrest adapter, and the right armrest unit is adjustablely connected to the right armrest adapter. Each of the armrest units includes: - Handrail base, which is linearly movable along a corresponding handrail adapter; - A handrail extending distally forward of the handrail base towards the patient and pivotable relative to the handrail base; and - Handrail arm support, which is linearly displaceable along the length of the handrail and is configured to support the patient's arm portion; Position the patient on the support platform; The handlebar is detachably connected to the left armrest of the left armrest unit and the right armrest of the right armrest unit; and The positioning of at least a portion of the handrail unit is selectively adjusted to accommodate a patient located on the support platform, such that each of the patient's arms is raised and extended in front of the body, wherein the arm portion of each arm is supported by a corresponding handrail arm support, and the patient's hand grips the handrail, causing the patient's arm to deviate from the path of the applied irradiation of the irradiation therapy.

12. The method according to claim 11, wherein, Selectively adjusting the positioning of at least a portion of the handrail unit includes linearly shifting the handrail arm support along the length of the handrail bar of the handrail unit.

13. The method according to claim 11, wherein, Selectively adjusting the positioning of at least a portion of the handrail unit includes linearly shifting the handrail base of the handrail unit relative to the handrail adapter.

14. The method according to claim 11, wherein, Adjustably connecting the left handrail unit to the left handrail adapter and adjustingly connecting the right handrail unit to the right handrail adapter includes sliding the handrail base of the respective handrail unit into the slotted portion of the respective handrail adapter.

15. The method according to claim 11, wherein, The detachable connection of the handlebar includes engaging a first protrusion on a first end of the handlebar with a recess on the end of the left handrail, and engaging a second protrusion on a second end of the handlebar with a recess on the end of the right handrail.

16. The method according to claim 11, wherein, Positioning the patient involves placing the patient in a seated position.

17. The method of claim 11, wherein the irradiation therapy comprises proton irradiation therapy.

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