Compensation film manufacturing die

Abstract

The utility model discloses a compensation film manufacturing die, and relates to the field of radiotherapy compensation film auxiliary processing equipment. The mold comprises a first mold plate and a second mold plate, the first mold plate and the second mold plate are mutually buckled to form a forming cavity and an air exhaust cavity, the air exhaust cavity is communicated with the forming cavity, and an air exhaust pipe communicated with the air exhaust cavity is constructed on the first mold plate or the second mold plate; the problems that when a compensation film is prepared through an existing filling liquid material curing mode, liquid materials in a mold are prone to being insufficient in filling and have the bubble defect are solved.

Description

Technical Field

[0001] The utility model relates to the field of radiotherapy compensation film auxiliary processing equipment, in particular to a compensation film production mold. Background Art

[0002] The goal of radiotherapy is to maximize the dose to the target area while minimizing the dose to normal tissue. Because high-energy radiation can cause a dose-building effect, external beam radiotherapy for superficial tumors requires covering the patient's body with tissue compensators to maximize the dose to the target area while sparing normal tissue.

[0003] In recent years, 3D printed compensators have gradually been used in clinical practice. Their highly conformal characteristics to the human body contour ensure that the compensators fit well and effectively reduce the size and number of air gaps.

[0004] However, 3D printed compensators are generally produced using the "3D printing cavity mold - filling liquid material inside and solidifying" method. During the preparation process, the complex cavity inside the mold is prone to defects such as insufficient filling and bubbles, which is not conducive to the precise control of radiation absorption dose in clinical practice. Utility Model Content

[0005] The purpose of the utility model is to provide a compensation film production mold to solve the problem that when the existing filling liquid material solidification method is used to prepare the compensation film, the liquid material in the mold is prone to insufficient filling and bubble defects.

[0006] In order to solve the above problems, the present invention adopts the following technical means:

[0007] A compensation film production mold includes a first template and a second template. The first template and the second template are interlocked to form a molding cavity and an exhaust cavity. The exhaust cavity is connected to the molding cavity. An exhaust pipe connected to the exhaust cavity is constructed on the first template or the second template.

[0008] Preferably, one side of the first template is constructed with a first arc groove and a first air extraction groove, the first arc groove and the first air extraction groove are separated by a first partition, and the edge of the first partition is constructed with a first connecting groove connecting the first arc groove and the first air extraction groove.

[0009] Furthermore, the second template is constructed with a second arc-shaped groove and a second air extraction groove on a side facing the first template, the second arc-shaped groove and the second air extraction groove are separated by a second partition, the edge of the second partition is constructed with a second connecting groove connecting the second arc-shaped groove and the second air extraction groove, and the top of the second template is constructed with an air extraction pipe connected to the second air extraction groove.

[0010] Furthermore, the forming cavity is formed by splicing the first arc-shaped groove and the second arc-shaped groove, the first partition plate and the second partition plate abut each other, the first connecting groove and the second connecting groove are spliced ​​to form a connecting hole for connecting the forming cavity and the exhaust cavity, and the exhaust cavity is formed by splicing the first exhaust groove and the second exhaust groove.

[0011] Furthermore, the abutting surfaces of the first template and the second template are constructed with a plurality of first through holes, the abutting surfaces of the second template and the first template are constructed with a plurality of second through holes, the first through holes and the second through holes are connected, and the first template and the second template are fastened and fitted together by bolts passing through the first through holes and the second through holes.

[0012] Furthermore, the first template and the second template are both made of plastic sheets.

[0013] Furthermore, the top of the first template is constructed with a plurality of vertical limit rods, and the limit rods are threaded with clamping nuts. The top of the second template is constructed with a plurality of limit grooves facing the limit rods. When the first template and the second template are buckled together, the limit rods are embedded in the limit grooves, and the clamping nuts are tightly abutted against the top of the second template.

[0014] During use, the utility model has the following beneficial effects:

[0015] When preparing a compensation film, a first and second template are fabricated using 3D printing. The molding cavity formed by the first and second templates, when joined, matches the patient's body surface topography. After the first and second templates are joined, liquid material is poured into the vacuum tube, allowing it to flow through the vacuum cavity into the molding cavity. Once the molding cavity is full, the vacuum tube is connected to a vacuum pump, which operates to remove air from the vacuum cavity and the molding cavity. This allows the liquid level in the molding cavity to remain constant even during the vacuuming process, once the molding cavity is fully filled. If gaps exist within the molding cavity during filling, the air generated in the cavity can be extracted during the vacuuming process, allowing the liquid material to fill the gaps. After vacuuming is complete, the lowered liquid level in the molding cavity can be replenished by adding material to the vacuum tube. This effectively avoids the problem of gaps in the molding cavity. Moreover, during the air extraction process, due to the high viscosity of the liquid, bubbles remaining in the liquid material during the filling process can also be extracted as the air extraction process proceeds. This effectively prevents bubbles from remaining in the compensation film after the material solidifies, causing defects in the compensation film. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the side sectional structure of the utility model.

[0018] Figure 3 for Figure 2 Schematic diagram of the splicing structure.

[0019] Figure 4 It is a side view structural diagram of the utility model.

[0020] Figure 5 for Figure 4 Schematic diagram of the AA cross-section structure.

[0021] Among them, 1-first template, 2-second template, 3-molding cavity, 4-exhaust cavity, 5-exhaust pipe, 6-first arc groove, 7-first exhaust groove, 8-first partition, 9-first connecting groove, 10-second arc groove, 11-second exhaust groove, 12-second partition, 13-second connecting groove, 14-connecting hole, 15-first through hole, 16-second through hole, 17-limiting rod, 18-tightening nut, 19-limiting groove. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] Please refer to Figures 1 to 5 As shown, a compensation film manufacturing mold includes a first template 1 and a second template 2. The first template 1 and the second template 2 are interlocked to form a molding cavity 3 and an exhaust cavity 4. The exhaust cavity 4 is connected to the molding cavity 3. The first template 1 or the second template 2 is constructed with an exhaust pipe 5 connected to the exhaust cavity 4.

[0029] Thus, when a compensation film is required, a first template 1 and a second template 2 are fabricated using 3D printing. The molding cavity 3 formed by the first and second templates 1 and 2 being joined is designed to match the patient's body surface topography. After the first and second templates 1 and 2 are joined, liquid material is poured into the vacuum tube 5, allowing it to enter the molding cavity 3 through the vacuum chamber 4. Once the molding cavity 3 is filled, the vacuum tube 5 is connected to a vacuum pump, which operates to remove air from the vacuum chamber 4 and molding cavity 3. Once the vacuum is complete and the molding cavity 3 is fully filled, the liquid level within the molding cavity 3 will not drop, even during the vacuuming process. If there are gaps within the molding cavity 3 during filling, the gas generated in the gaps can be extracted during the vacuuming process, allowing the liquid material to fill the gaps within the molding cavity 3. Furthermore, after the vacuuming is complete, the lowered liquid level within the molding cavity 3 can be replenished by adding material to the vacuum tube 5. This effectively avoids the problem of gaps in the molding cavity 3 that cannot be fully filled. Furthermore, during the degassing process, due to the high viscosity of the liquid, bubbles remaining in the liquid material during the filling process can also be extracted as the degassing process proceeds. This effectively prevents bubbles from remaining in the compensation film after the material solidifies, causing defects in the compensation film.

[0030] Specifically, one side of the first template 1 is constructed with a first arc-shaped groove 6 and a first air extraction groove 7. The first arc-shaped groove 6 and the first air extraction groove 7 are separated by a first partition 8. The edge of the first partition 8 is constructed with a first connecting groove 9 that connects the first arc-shaped groove 6 and the first air extraction groove 7.

[0031] In addition, the second template 2 is constructed with a second arc groove 10 and a second air extraction groove 11 on the side facing the first template 1. The second arc groove 10 and the second air extraction groove 11 are separated by a second partition 12. The edge of the second partition 12 is constructed with a second connecting groove 13 connecting the second arc groove 10 and the second air extraction groove 11. The top of the second template 2 is constructed with an air extraction pipe 5 connected to the second air extraction groove 11.

[0032] At the same time, the forming cavity 3 is formed by splicing the first arc groove 6 and the second arc groove 10, the first partition 8 and the second partition 12 abut against each other, the first connecting groove 9 and the second connecting groove 13 are spliced ​​to form a connecting hole 14 for connecting the forming cavity 3 and the exhaust cavity 4, and the exhaust cavity 4 is formed by splicing the first exhaust groove 7 and the second exhaust groove 11.

[0033] In addition, in order to ensure that the first template 1 and the second template 2 are stably fitted, the abutting surfaces of the first template 1 and the second template 2 are constructed with a plurality of first through holes 15, and the abutting surfaces of the second template 2 and the first template 1 are constructed with a plurality of second through holes 16. The first through holes 15 and the second through holes 16 are connected, and the first template 1 and the second template 2 are fastened and fitted together by bolts passing through the first through holes 15 and the second through holes 16.

[0034] Moreover, the first template 1 and the second template 2 are both made of plastic plates.

[0035] In this way, the first template 1 and the second template 2 are pressed together by the cooperation of the bolts and nuts, and in the process of continuous pressing, the abutting surfaces of the first template 1 and the second template 2 can undergo a certain deformation because they are plastic sheets, thereby improving the airtightness of the gap between the first template 1 and the second template 2 after bonding, thereby allowing the vacuum process to be carried out better and preventing leakage of liquid materials.

[0036] Furthermore, the top of the first template 1 is constructed with a plurality of vertical limiting rods 17, and the limiting rods 17 are threadedly installed with clamping nuts 18. The top of the second template 2 is constructed with a plurality of limiting grooves 19 facing the limiting rods 17. When the first template 1 and the second template 2 are buckled together, the limiting rods 17 are embedded in the limiting grooves 19, and the clamping nuts 18 are tightly abutted against the top of the second template 2.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compensation film production mold, characterized in that: The invention comprises a first template (1) and a second template (2), wherein the first template (1) and the second template (2) are interlocked to form a molding cavity (3) and an air extraction cavity (4), wherein the air extraction cavity (4) is connected to the molding cavity (3), and an air extraction pipe (5) connected to the air extraction cavity (4) is constructed on the first template (1) or the second template (2).

2. A compensation film production mold according to claim 1, characterized in that: One side of the first template (1) is constructed with a first arcuate groove (6) and a first air extraction groove (7); the first arcuate groove (6) and the first air extraction groove (7) are separated by a first partition (8); and an edge of the first partition (8) is constructed with a first connecting groove (9) connecting the first arcuate groove (6) and the first air extraction groove (7).

3. A compensation film production mold according to claim 2, characterized in that: The second template (2) is provided with a second arc-shaped groove (10) and a second air extraction groove (11) on a side facing the first template (1); the second arc-shaped groove (10) and the second air extraction groove (11) are separated by a second partition (12); the edge of the second partition (12) is provided with a second connecting groove (13) connecting the second arc-shaped groove (10) and the second air extraction groove (11); and the top of the second template (2) is provided with an air extraction pipe (5) connected to the second air extraction groove (11).

4. A compensation film production mold according to claim 3, characterized in that: The forming cavity (3) is formed by splicing the first arc-shaped groove (6) and the second arc-shaped groove (10), the first partition plate (8) and the second partition plate (12) abut against each other, the first connecting groove (9) and the second connecting groove (13) are spliced ​​to form a connecting hole (14) for connecting the forming cavity (3) and the air extraction cavity (4), and the air extraction cavity (4) is formed by splicing the first air extraction groove (7) and the second air extraction groove (11).

5. The compensation film production mold according to claim 1, characterized in that: The abutting surfaces of the first template (1) and the second template (2) are configured with a plurality of first through holes (15), and the abutting surfaces of the second template (2) and the first template (1) are configured with a plurality of second through holes (16). The first through holes (15) and the second through holes (16) are connected to each other, and the first template (1) and the second template (2) are fastened and fitted together by bolts passing through the first through holes (15) and the second through holes (16).

6. A compensation film production mold according to claim 5, characterized in that: The first template (1) and the second template (2) are both made of plastic sheets.

7. The compensation film production mold according to claim 1, characterized in that: The top of the first template (1) is constructed with a plurality of vertical limiting rods (17), and the limiting rods (17) are threadedly mounted with clamping nuts (18). The top of the second template (2) is constructed with a plurality of limiting grooves (19) on a side facing the limiting rods (17). When the first template (1) and the second template (2) are fastened together, the limiting rods (17) are embedded in the limiting grooves (19), and the clamping nuts (18) are tightly abutted against the top of the second template (2).

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