A fixing assembly and head and neck fixing device for proton therapy

Abstract

This utility model relates to the technical field of radiotherapy equipment, and more specifically, to a fixation component and a head and neck fixation device for proton therapy. The fixation component includes a clamping member and an inserting member that are interlocked. The clamping member includes a clamping body and a first clamping plate and a second clamping plate sequentially distributed on the clamping body, with an insertion groove formed between the first clamping plate and the second clamping plate. The inserting member is inserted into the insertion groove, with its top and bottom surfaces respectively engaging with the first clamping plate and the second clamping plate. In a direction perpendicular to the plane of the first clamping plate, the sum of the thicknesses of the first clamping plate and the inserting member is equal to the sum of the thicknesses of the second clamping plate and the inserting member. The fixation component in this utility model has a uniform overall thickness. When applied in proton therapy, proton beams of the same energy will explode at the same location after passing through the fixation component, ensuring that all proton beams passing through the fixation component explode within a pre-set target area, thus meeting the requirements for proton therapy.

Description

Technical Field

[0001] This utility model relates to the technical field of radiotherapy equipment, and more specifically, to a fixation component and a head and neck fixation device for proton therapy. Background Technology

[0002] Radiation therapy is currently a major treatment for cancer. During radiation therapy, pre-fabricated fixation diaphragms are used to secure the patient to the radiotherapy bed to prevent movement during treatment and subsequent deviations in the radiation position, which could affect the effectiveness of the therapy. Most existing technologies use elastic clips to fix the diaphragm to the radiotherapy bed. For example, one existing radiotherapy fixation device includes a base plate and a diaphragm assembly. The side edge of the base plate has several connection holes spaced apart. The bottom of the diaphragm assembly has several elastic clips corresponding to each connection hole. The elastic clips are inserted into the connection holes and elastically abut against the inner wall of the connection hole, thereby mounting the diaphragm assembly to the base plate.

[0003] Proton therapy is currently the most advanced radiotherapy technology for tumors, with significant advantages such as precise targeting and reduced side effects. However, due to the characteristics of the Bragg peak of proton beams, any significant thickness difference or density change during the beam's journey through the base and pre-fabricated membrane can easily cause the proton beams to detonate outside the pre-set target area. This results in the proton beams deviating from their intended detonation point in the tumor region and detonating in the location of normal tissue, thus not only failing to achieve the therapeutic goal but also damaging normal tissue.

[0004] In existing technologies, after the elastic buckle is engaged with the connecting hole, the thickness of the elastic buckle and the connecting hole is inconsistent in different places in the direction perpendicular to the plane where the elastic buckle is located. This means that when the proton beam passing through the elastic buckle has the same energy, the thickness variation in different places of the elastic buckle will cause the proton beam to explode at different locations, which in turn will cause the explosion position of the proton beam to deviate, thus failing to achieve the purpose of treatment. Therefore, the elastic buckle in the existing technology cannot meet the requirements for the use of proton therapy. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing radiotherapy fixation devices where the proton beam deflects due to inconsistent thickness at various points on the elastic clip and connecting hole when proton beams of the same energy pass through the elastic clip. This invention provides a fixation component and a head and neck fixation device for proton therapy. The fixation component in this solution has a uniform overall thickness after locking. After proton beams of the same energy pass through the fixation component, the proton beam can deflect within a preset target area, thus meeting the requirements for proton therapy.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A fixing component is provided, including a clamping member and an inserting member that are interlocked with each other; the clamping member includes a clamping body and a first clamping piece and a second clamping piece sequentially distributed on the clamping body, with an insertion groove formed between the first clamping piece and the second clamping piece; the inserting member is inserted into the insertion groove, and the top surface and bottom surface of the inserting member respectively mate with the first clamping piece and the second clamping piece; in a direction perpendicular to the plane where the first clamping piece is located, the sum of the thicknesses of the first clamping piece and the inserting member is equal to the sum of the thicknesses of the second clamping piece and the inserting member.

[0008] The top and bottom surfaces of the insert mate with the first and second clamping pieces, respectively. This mate can refer to a clearance fit or a close fit; that is, after the insert is inserted into the insertion slot between the first and second clamping pieces, the two end faces of the insert can either be close to the first and second clamping pieces, or they can have a clearance fit. After the insert is inserted into the insertion slot, it is clamped between the first and second clamping pieces, at which point the insert engages with the clamping piece, thus fixing the insert to the clamping piece. When the insert is inserted into the insertion slot, either the top surface of the insert mates with the first clamping piece and the bottom surface mates with the second clamping piece, or vice versa. The clamping piece and the insert can be engaged by providing protrusions and grooves on both the clamping piece and the insert. The cross-sectional shape of the protrusions and grooves can be arc-shaped or any other shape that allows for engagement after the protrusions and grooves mate. Similarly, when protrusions or grooves are provided on the clamping component, they can be provided on either the first clamping plate or the second clamping plate. After the clamping component and the insert are engaged and fixed, in the direction perpendicular to the plane of the first clamping plate, the sum of the thicknesses of the first clamping plate and the insert is equal to the sum of the thicknesses of the second clamping plate and the insert, meaning that the thicknesses at all positions where the fixing assembly engages are equal. Furthermore, approximately equal thicknesses are also considered equal. The criterion for approximately equal thickness is whether the burst position of proton rays with the same energy in the proton beam shifts when they pass through the fixing assembly. If the burst position of the proton rays does not shift, then the thicknesses are considered equal. That is, when the difference between the sum of the thicknesses of the first clamping plate and the insert and the sum of the thicknesses of the second clamping plate and the insert in the direction perpendicular to the plane of the first clamping plate is insufficient to cause a shift in the burst position of the proton rays passing through the fixing assembly, the sum of the thicknesses of the first clamping plate and the insert is approximately equal to the sum of the thicknesses of the second clamping plate and the insert.

[0009] After the fixing component of this utility model is fixed, the overall thickness of the fixing component is uniform. When applied in the process of proton therapy, when proton rays with the same energy in the proton beam pass through the fixing component, the proton rays explode at the same position. This allows the proton rays passing through the fixing component to explode within the pre-set target area, thus meeting the requirements of proton therapy.

[0010] Furthermore, the insert includes an insert body, an insert portion, a fixing plate, and a deformation groove. The insert portion and the fixing plate are both located on the insert body. The insert portion is positioned beside the fixing plate, and the deformation groove is located between the insert portion and the fixing plate. The fixing plate engages with the clamping member. When the fixing plate engages with the clamping member, and the insert needs to be removed from the clamping member, the fixing plate is moved to release the engagement, allowing the insert to be pulled out of the insertion groove of the clamping member. The deformation groove facilitates the deformation of the fixing plate under force on the insert body, making it easier to release the engagement between the fixing plate and the clamping member.

[0011] Furthermore, the first clamping piece has a groove, and the fixing piece has a protrusion. The protrusion can extend into the groove and engage with it. Vertically, the first clamping piece is positioned above the second clamping piece. The first clamping piece is positioned above the second clamping piece, meaning the top surface of the insert engages with the bottom surface of the first clamping piece, and the bottom surface of the insert engages with the top surface of the second clamping piece. When the fixing piece is moved, it is moved from the bottom of the fixing assembly, providing more operating space. This also facilitates observation from above the fixing assembly to see if the protrusion has disengaged from the groove.

[0012] Furthermore, the protrusion has an inclined side surface to facilitate its insertion into the bottom surface of the first clip. The end of the inclined side surface away from the fixing piece is inclined in a direction away from the insertion of the insert. In a cross-section along the length of the fixing assembly, the protrusion has a right-angled triangle shape. The hypotenuse of the right-angled triangle is the inclined side surface, the base of the right-angled triangle is the bottom where the protrusion connects to the fixing piece, and the side of the right-angled triangle is the side of the protrusion that engages with the groove. The plane containing the side of the right-angled triangle can fit against the sidewall of the groove to complete the engagement between the protrusion and the groove. The inclined side surface acts as a guide, making it easier for the protrusion to smoothly extend into the bottom of the first clip until it is engaged in the groove.

[0013] Furthermore, the bottom surface of the first clip has a chamfer to guide the insert. The chamfer makes it easier for the insert to be smoothly inserted between the first and second clips.

[0014] Furthermore, the deformation groove includes a first deformation groove and a second deformation groove, and the insertion part includes a first insertion part and a second insertion part. The first insertion part, the first deformation groove, the fixing piece, the second deformation groove, and the second insertion part are arranged sequentially on the insertion body. There are two second clamping pieces, which are located on both sides of the first clamping piece, and the top surfaces of the two second clamping pieces are respectively in contact with the bottom surfaces of the first insertion part and the second insertion part. Deformation grooves are provided on both sides of the fixing piece, which facilitates the deformation of the fixing piece under force. There are two insertion parts and two second clamping pieces, which can limit the two insertion parts respectively, thereby improving the clamping effect of the insertion part on the clamping piece.

[0015] Furthermore, the top surfaces of both the first insertion portion and the second insertion portion are in contact with the bottom surface of the first clamping piece. That is, the first clamping piece can also limit the first insertion portion and the second insertion portion, making the clamping member's limiting effect on the insertion portion better.

[0016] Furthermore, a first transition arc surface is formed between the first clamping piece and the clamping body, and a second transition arc surface is provided on the insertion part, with the first transition arc surface and the second transition arc surface fitting together. Both the insertion part and the clamping part are integrally formed. In this case, the first transition arc surface between the first clamping piece and the clamping body ensures the connection strength between the first clamping piece and the clamping body. The first clamping piece has transition arc surfaces on two adjacent sides, meaning that two adjacent sides of the first clamping piece are connected to the clamping body, further increasing the connection strength between the first clamping piece and the clamping body. The second transition arc surface on the insertion part ensures the overall thickness of the fixing assembly is uniform.

[0017] Furthermore, the end of the fixing plate away from the insertion body is inclined away from the clamping member to form a curved end, and the angle between the curved end and the fixing plate is 135°-180°. With the curved end, the user can deform the fixing plate by manipulating it, making operation easier. The angle between the curved end and the fixing plate is 135°-180°, meaning the bending angle of the curved end is less than 45°. A larger bending angle makes operation easier, but also means the curved end is less closely fitted to the insertion body, resulting in a greater spatial gradient between them and making proton rays less stable. When the bending angle is less than 45°, it avoids the proton rays from shifting the explosion point due to spatial gradients.

[0018] Furthermore, it also includes a paddle, which is disposed on the insertion body, and the paddle and the bent end are located on the same side of the insertion body. When the fixing plate is engaged with the clamping member, the paddle abuts against the end face of the second clamping plate. The paddle is vertically disposed on the fixing plate, and when the bent part is turned, the user's thumb and forefinger press the paddle and the bent part respectively, making it easier for the user to apply force. The paddle can abut against the end face of the second clamping plate, that is, when the protrusion extends into the locking hole, the paddle can prevent the insertion part from being inserted further, serving as a limit reminder.

[0019] This utility model also provides a head and neck fixation device for proton therapy, including a base plate, a diaphragm frame, and one of the fixation components described above. The clamping members are disposed on the base plate, and the inserting members are disposed on the diaphragm frame. Several fixation components are provided; the clamping members are linearly arranged along the edge strip of the base plate, and the inserting members are linearly arranged along the edge strip of the diaphragm frame. The overall thickness of the fixation component is only 4mm, and the thickness of the inserting members and clamping members is 2mm.

[0020] The head and neck fixation device for proton therapy of this utility model fixes the membrane frame to the base plate through the fixing component. Since the overall thickness of the fixing component is uniform, when proton rays of the same energy pass through the fixing component on the base plate, the explosion position of the proton rays is also the same. This allows the proton rays passing through the fixing component to explode within the pre-set target area, thus meeting the needs of proton therapy.

[0021] Furthermore, the clamping member is integrally formed with the base plate. Integrating the clamping member with the base plate improves production efficiency and ensures strong connection between them. During integral forming, the clamping member is embedded in the base plate, resulting in a smooth and neat edge across the entire base plate.

[0022] Furthermore, the fixation assembly includes a top fixation assembly for fixing the patient's head, a neck fixation assembly for fixing the patient's neck, and a shoulder fixation assembly for fixing the patient's shoulders. The length L1 of the neck fixation assembly is greater than the length L2 of the top fixation assembly and the length L3 of the shoulder fixation assembly. The longer length of the neck fixation assembly, meaning the longer insertion part of the neck fixation assembly, results in a larger connection area between the insertion part of the neck fixation assembly and the insertion part of the diaphragm frame. When the neck portion of the diaphragm frame is fixed to the base plate by the neck fixation assembly, the diaphragm frame can better conform to the patient's neck, providing a better limiting effect on the patient's neck.

[0023] Furthermore, the top fixing component, the neck fixing component, and the shoulder fixing component are symmetrically arranged on the base plate along the axis M of the base plate's length direction. The symmetrical arrangement of the top fixing component, neck fixing component, and shoulder fixing component on the base plate means that there is one top fixing component, neck fixing component, or shoulder fixing component at the same position on both sides of the base plate. When the fixing components fix the diaphragm frame, the two fixing components apply opposite forces to the diaphragm frame, and the two forces are symmetrical, which can prevent uneven stress on the diaphragm frame and subsequent deformation.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The fixing component of this invention has a uniform thickness. When the head and neck fixing device for proton therapy fixes the membrane frame to the base plate through the fixing component, the uniform thickness of the fixing component ensures that when proton rays of the same energy pass through the fixing component on the base plate, the explosion position of the proton rays is also the same. This allows the proton rays passing through the fixing component to explode within the pre-set target area, thus meeting the requirements for proton therapy. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a fixed component;

[0027] Figure 2 This is a schematic diagram of the structure of a clamping component for fixing an assembly;

[0028] Figure 3 A schematic diagram of the structure of an insert for a fixing component;

[0029] Figure 4 A schematic diagram of the structure of an insert for a fixed component from another angle;

[0030] Figure 5 This is a structural schematic diagram of a third embodiment of a fixing component;

[0031] Figure 6 This is a schematic diagram of a head and neck fixation device for proton therapy.

[0032] In the attached figures: 1. Clamping component; 2. Insertion component; 3. Protrusion; 4. Groove; 5. Paddle; 6. Base plate; 7. Top fixing assembly; 8. Neck fixing assembly; 9. Shoulder fixing assembly; 101. Clamping body; 102. First clamping piece; 103. Second clamping piece; 104. Insertion groove; 105. First transition arc surface; 201. Insertion body; 202. Insertion part; 203. Fixing piece; 204. Deformation groove; 205. Second transition arc surface; 221. First insertion part; 222. Second insertion part; 231. Bending end; 241. First deformation groove; 242. Second deformation groove; 301. Inclined side. Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0034] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] Example 1

[0036] This embodiment is a first embodiment of a fixing component, including a clamping member 1 and an inserter 2 that are interlocked. The clamping member 1 includes a clamping body 101 and a first clamping piece 102 and a second clamping piece 103 sequentially distributed on the clamping body 101. An insertion groove 104 is formed between the first clamping piece 102 and the second clamping piece 103. The inserter 2 is inserted into the insertion groove 104, and the top and bottom surfaces of the inserter 2 respectively mate with the end faces of the first clamping piece 102 and the second clamping piece 103. In a direction perpendicular to the plane where the first clamping piece 102 is located, the sum of the thicknesses of the first clamping piece 102 and the inserter 2 is equal to the sum of the thicknesses of the second clamping piece 103 and the inserter 2.

[0037] Specifically, the insert 2 includes an insert body 201, an insert portion 202, a fixing piece 203, and a deformation groove 204. The insert portion 202 and the fixing piece 203 are both located on the insert body 201. The insertion portion 202 is located on the side of the fixing piece 203. The deformation groove 204 is located between the insert portion 202 and the fixing piece 203. The fixing piece 203 is engaged with the clamping member 1.

[0038] Specifically, the first clip 102 is provided with a groove 4, and the fixing piece 203 is provided with a protrusion 3. The protrusion 3 can extend into the groove 4 and engage with the groove 4. In the vertical direction, the first clip 102 is located above the second clip 103.

[0039] Specifically, the protrusion 3 is provided with an inclined side surface 301 for facilitating the protrusion 3 to extend into the bottom surface of the first clamping piece 102. The end of the inclined side surface 301 away from the fixing piece 203 is inclined in the direction away from the insertion of the insert 2. In the cross-section along the length of the fixing assembly, the cross-sectional shape of the protrusion 3 is a right triangle. The hypotenuse of the right triangle is the inclined side surface 301, the base of the right triangle is the bottom where the protrusion 3 connects with the fixing piece 203, and the side of the right triangle is the side of the protrusion 3 that engages with the groove 4. The plane containing the side of the right triangle can fit against the side wall of the groove 4 to complete the engagement of the protrusion 3 and the groove 4.

[0040] Specifically, the deformation groove 204 includes a first deformation groove 241 and a second deformation groove 242, and the insertion part 202 includes a first insertion part 221 and a second insertion part 222. The first insertion part 221, the first deformation groove 241, the fixing piece 203, the second deformation groove 242, and the second insertion part 222 are arranged sequentially on the insertion body 201. There are two second clips 103, which are located on both sides of the first clip 102, and the top surfaces of the two second clips 103 are respectively attached to the bottom surfaces of the first insertion part 221 and the second insertion part 222. The top surfaces of both the first insertion part 221 and the second insertion part 222 are attached to the bottom surface of the first clip 102.

[0041] The working principle or process of this embodiment is as follows:

[0042] After the insert 2 is inserted into the insertion groove 104 between the first clamping piece 102 and the second clamping piece 103, the insert 2 is clamped between the first clamping piece 102 and the second clamping piece 103. At this time, the protrusion 3 on the fixing piece 203 engages in the groove 4 on the first clamping piece 102, thus completing the fixation of the insert 2 on the clamping piece 1. During the insertion process of the insert 2, the insertion part 202 and the fixing piece 203 on the insert 2 first extend into the insertion groove 104. At this time, the bottom surface of the first clamping piece 102 is in contact with the fixing piece 203, the top surface of the first insertion part 221 and the top surface of the second insertion part 222, and the top surfaces of the two second clamping pieces 103 are in contact with the bottom surfaces of the first insertion part 221 and the second insertion part 222, respectively. Until the protrusion 3 extends into the bottom of the first clip 102, the inclined side 301 on the protrusion 3 first abuts against the first clip 102. The first clip 102 applies a downward force to the protrusion 3, causing the fixing piece 203 to bend downward. As the insertion part 202 continues to extend, until the protrusion 3 is engaged in the groove on the first clip 102, the top surface of the fixing piece 203 is tightly attached to the bottom surface of the first clip 102.

[0043] The beneficial effects of this implementation are as follows:

[0044] After the fixation component in this embodiment is fixed, the overall thickness of the fixation component is uniform. When applied in the process of proton therapy, when proton rays with the same energy pass through the fixation component, the explosion position of the proton rays is also the same. This allows the proton rays passing through the fixation component to explode within the pre-set target area, thus meeting the requirements for proton therapy.

[0045] The two deformation grooves 204 facilitate the deformation of the fixing piece 203 under stress. The first clamping piece 102 is located above the second clamping piece 103. When the fixing piece 203 is moved, it is moved from the bottom of the fixing assembly, which provides more operating space and makes it easier to observe from above whether the protrusion 3 has disengaged from the groove 4. The inclined side 301 acts as a guide, making it easier for the protrusion 3 to smoothly extend into the bottom of the first clamping piece 102 until it is engaged in the groove 4. The top surfaces of the first insertion part 221 and the second insertion part 222 are both in contact with the bottom surface of the first clamping piece 102, meaning that the first clamping piece 102 can also limit the first insertion part 221 and the second insertion part 222, making the limiting effect of the clamping member 1 on the insertion member 2 better.

[0046] Example 2

[0047] This embodiment is a second embodiment of a fixing component. Based on the first embodiment, this embodiment further defines the structure of the fixing component.

[0048] Specifically, the bottom surface of the first clip 102 is provided with a chamfer for guiding the insert 2.

[0049] Specifically, the insert 2 and the clamping part 1 are integrally formed. A first transition arc surface 105 is formed between the first clamping piece 102 and the clamping body 101. The first transition arc surface 105 is provided on two adjacent sides of the first clamping piece 102. A second transition arc surface 205 is formed on the insert part 202. The first transition arc surface 105 and the second transition arc surface 205 are in contact.

[0050] Specifically, the end of the fixing plate 203 away from the insertion body 201 is inclined in the direction away from the clamping member 1 to form a bent end 231, and the angle between the bent end 231 and the fixing plate 203 is 135°-180°.

[0051] Specifically, it also includes a paddle 5, which is disposed on the insertion body 201. The insertion body 201 is perpendicular to the paddle 5, and the paddle 5 and the bent end 231 are located on the same side of the insertion body 201. When the fixing piece 203 is engaged with the clamping member 1, the paddle 5 abuts against the end face of the second clamping piece 103.

[0052] The beneficial effects of this embodiment are as follows:

[0053] The chamfered design facilitates the insertion of the insert 2 between the first clamp 102 and the second clamp 103. The first transition arc surface 105 further increases the connection strength between the first clamp 102 and the insertion body 201, while the second transition arc surface 205 ensures uniform overall thickness of the fixing assembly. The angle between the bent end 231 and the fixing plate 203 is between 135° and 180°, meaning the bending angle of the bent end 231 is less than 45°, which helps prevent the proton beam from shifting due to spatial gradient. The lever 5 makes it easier for the user to apply force. The lever 5 can abut against the end face of the second clamp 103; that is, when the protrusion 3 extends into the card hole, the lever 5 can prevent the insertion part 202 from continuing to be inserted, serving as a limit reminder.

[0054] Example 3

[0055] This embodiment is a third embodiment of a fixing component. The difference between this embodiment and the first and second embodiments is that there is one insertion part 202, one second clip 103 and one deformation groove 204.

[0056] Specifically, such as Figure 5 As shown, when the insert 2 is engaged with the clamping member 1, the top surfaces of the insert portion 202 and the fixing piece 203 abut against the bottom surface of the first clamping piece 102, and the top surface of the second clamping piece 103 abuts against the bottom surface of the insert portion 202.

[0057] The fixing components in this embodiment are simpler.

[0058] Other technical features and beneficial effects of this embodiment are the same as those of Embodiment 1 and Embodiment 2.

[0059] Example 4

[0060] This embodiment is an example of a head and neck fixation device for proton therapy, such as... Figure 6 As shown, the assembly includes a base plate 6, a diaphragm frame, and a fixing component as described in Embodiment 1 or Embodiment 2. Clamping members 1 are disposed on the base plate 6, and inserting members 2 are disposed on the diaphragm frame. Several fixing components are present; several clamping members 1 are linearly arranged along the edge strip of the base plate 6, and several inserting members 2 are linearly arranged along the edge strip of the diaphragm frame. The diaphragm frame is not shown in the figure.

[0061] Specifically, the clamping part 1 is integrally formed with the base plate 6, and when integrally formed, the clamping part 1 is embedded in the base plate 6, so that the edge of the base plate 6 is smooth and neat.

[0062] Specifically, the fixation components include a top fixation component 7 for fixing the top of the patient's head, a neck fixation component 8 for fixing the patient's neck, and a shoulder fixation component 9 for fixing the patient's shoulders. The length L1 of the neck fixation component 8 is greater than the length L2 of the top fixation component 7 and the length L3 of the shoulder fixation component 9.

[0063] Specifically, the top fixing component 7, the neck fixing component 8, and the shoulder fixing component 9 are arranged symmetrically on the base plate 6 along the axis M of the length direction of the base plate 6.

[0064] The beneficial effects of this embodiment are as follows:

[0065] In this embodiment, when the head and neck fixation device for proton therapy fixes the membrane frame to the base plate 6 through the fixation component, the thickness of the fixation component is uniform. When proton rays of the same energy pass through the fixation component on the base plate 6, the explosion position of the proton rays is also the same. This allows the proton rays passing through the fixation component to explode within the pre-set target area, thus meeting the requirements for proton therapy.

[0066] The clamping component 1 is integrally formed with the base plate 6, which can further improve the production efficiency of the base plate 6 and ensure the connection strength between the clamping component 1 and the base plate 6. The insert 2 of the neck fixation component 8 is longer. When the neck part of the diaphragm frame is fixed to the base plate 6 by the neck fixation component 8, the diaphragm frame can better fit the patient's neck when fixing it, and the limiting effect of the diaphragm frame on the patient's neck is better. The fixation components are symmetrically arranged on the base plate 6, which can prevent the diaphragm frame from deforming due to uneven force.

[0067] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fixing component, characterized in that, It includes a clamping component (1) and an insert component (2) that interlock with each other; The clamping member (1) includes a clamping body (101) and a first clamping piece (102) and a second clamping piece (103) sequentially distributed on the clamping body (101), wherein an insertion groove (104) is formed between the first clamping piece (102) and the second clamping piece (103); The insert (2) is inserted into the insertion slot (104), and the top and bottom surfaces of the insert (2) are respectively engaged with the first clip (102) and the second clip (103); In a direction perpendicular to the plane of the first clip (102), the sum of the thicknesses of the first clip (102) and the insert (2) is equal to the sum of the thicknesses of the second clip (103) and the insert (2).

2. A fixing component according to claim 1, characterized in that, The insert (2) includes an insert body (201), an insert portion (202), a fixing piece (203), and a deformation groove (204). The insert portion (202) and the fixing piece (203) are both located on the insert body (201). The insert portion (202) is located on the side of the fixing piece (203), and the deformation groove (204) is located between the insert portion (202) and the fixing piece (203). The fixing piece (203) is engaged with the clamping member (1).

3. A fixing component according to claim 2, characterized in that, The first clip (102) is provided with a groove (4), and the fixing piece (203) is provided with a protrusion (3). The protrusion (3) can extend into the groove (4) and engage with the groove (4). In the vertical direction, the first clip (102) is located above the second clip (103).

4. A fixing component according to claim 3, characterized in that, The protrusion (3) is provided with an inclined side surface (301) for facilitating the protrusion (3) to extend into the bottom surface of the first clip (102), and one end of the inclined side surface (301) away from the fixing piece (203) is inclined in the insertion direction away from the insert (2).

5. A fixing component according to claim 3, characterized in that, The bottom surface of the first clip (102) is provided with a chamfer for guiding the insert (2).

6. A fixing component according to claim 2, characterized in that, The deformation groove (204) includes a first deformation groove (241) and a second deformation groove (242), and the insertion part (202) includes a first insertion part (221) and a second insertion part (222). The first insertion part (221), the first deformation groove (241), the fixing piece (203), the second deformation groove (242), and the second insertion part (222) are arranged sequentially on the insertion body (201). There are two second clips (103), which are located on both sides of the first clip (102). The top surfaces of the two second clips (103) are respectively attached to the bottom surfaces of the first insertion part (221) and the second insertion part (222).

7. A fixing component according to claim 6, characterized in that, The top surfaces of the first insertion part (221) and the second insertion part (222) are both in contact with the bottom surface of the first clip (102).

8. A fixing component according to claim 6, characterized in that, A first transition arc surface (105) is formed between the first clamping piece (102) and the clamping body (101), and a second transition arc surface (205) is provided on the insertion part (202), and the first transition arc surface (105) and the second transition arc surface (205) are in contact.

9. A fixing component according to claim 3, characterized in that, The end of the fixing piece (203) away from the insertion body (201) is inclined in a direction away from the clamping member (1) to form a bent end (231), and the included angle between the bent end (231) and the fixing piece (203) is 135°-180°.

10. A fixing component according to claim 9, characterized in that, It also includes a paddle (5), which is disposed on the insertion body (201), and the paddle (5) and the bent end (231) are located on the same side of the insertion body (201).

11. A fixing component according to claim 10, characterized in that, When the fixing piece (203) engages with the clamping member (1), the paddle (5) abuts against the end face of the second clamping piece (103).

12. A head and neck fixation device for proton therapy, characterized in that, The device includes a base plate (6), a diaphragm frame, and a fixing assembly as described in any one of claims 1-11. The clamping member (1) is disposed on the base plate (6), and the inserting member (2) is disposed on the diaphragm frame. The fixing assembly comprises a plurality of clamping members (1) arranged linearly on the base plate (6) along the edge strip of the base plate (6), and a plurality of inserting members (2) arranged linearly on the diaphragm frame along the edge strip of the diaphragm frame.

Images