Radiotherapy thermoplastic film rapid positioning tapper

Abstract

The invention provides a rapid positioning tapper for a radiotherapy thermoplastic film, and belongs to the technical field of thermoplastic film tapping. Comprising a main body, a positioning cylinder is fixedly connected to one end of the main body, a driving rod is rotatably connected in the positioning cylinder, a positioning rod is fixedly connected to the end, away from the main body, of the driving rod, a drill bit and a positioning mechanism are installed in the positioning rod, and the positioning mechanism is used for assisting a user in positioning and punching a thermoplastic film. And the positioning mechanism is respectively connected with the positioning cylinder and the positioning rod. The positioning mechanism is arranged, so that in the tapping operation process of the tapper, the outline defined by a plurality of pasting heads is always kept consistent with the outline of a thermoplastic film, the stability of a drill bit can be improved by means of the positioning effect of the pasting heads in the tapping process, the tapper is not affected by the shape of the thermoplastic film in the tapping process, and the tapping quality of the thermoplastic film is improved. And the tapping efficiency and the operation convenience are improved.

Description

Technical Field

[0001] This invention relates to the field of thermoplastic film perforation technology, and particularly to a rapid positioning perforator for radiotherapy thermoplastic films. Background Technology

[0002] In radiotherapy, after the patient is fixed in a low-temperature thermoplastic memory film, a hole needs to be made in the low-temperature thermoplastic memory film in the lesion area. This is to reduce the patient's skin dose, assist in marking the patient's body surface, reduce irritation of the surgical stoma, prevent the patient from vomiting, reduce the patient's treatment risk and uncertainty, and improve the accuracy and efficacy of the treatment.

[0003] Currently, most methods for drilling holes in low-temperature thermoplastic memory films involve using utility knives, scissors, or hole punches. However, using utility knives or scissors is time-consuming, labor-intensive, and restrictive in terms of location due to the film's thickness and hardness, resulting in low quality and efficiency. Furthermore, the cut edges are prone to burrs, causing discomfort to patients and increasing the risk of injury to both patients and medical staff. Using hole punches presents challenges because the hardened film has an irregular, arched shape, making it difficult to align the punching position. The punch itself is also prone to shifting during drilling, increasing the difficulty and reducing efficiency.

[0004] Therefore, the present invention provides a rapid positioning opening device for radiotherapy thermoplastic films to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a rapid positioning and drilling tool for radiotherapy thermoplastic films. By setting a positioning mechanism, the contour formed by several adhesive heads is always consistent with the contour of the thermoplastic film during the drilling operation. The positioning effect of the adhesive heads can improve the stability of the drill bit during the drilling process, so that the drilling process is not affected by the shape of the thermoplastic film, thereby improving the drilling efficiency and ease of operation. The above settings can solve the problems of high operation difficulty and low drilling efficiency in the current process of drilling thermoplastic films.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A rapid positioning and drilling device for radiotherapy thermoplastic film includes a main body, a positioning cylinder fixedly connected to one end of the main body, a horizontal handle fixedly connected to the outer wall of the main body near the positioning cylinder, a top support fixedly connected to the end of the main body away from the positioning cylinder, cover plates fixedly connected to the top and bottom of the main body, a hand crank rotatably connected to the outer wall of the main body, a drive gear set installed inside the main body, a drive rod rotatably connected inside the positioning cylinder, a positioning rod fixedly connected to the end of the drive rod away from the main body, a drill bit installed inside the positioning rod, and a positioning mechanism. The positioning mechanism is used to assist the user in positioning and drilling holes in the thermoplastic film, and the positioning mechanism is connected to the positioning cylinder and the positioning rod respectively.

[0007] Optionally, the positioning mechanism includes an outer sleeve screwed to the end of the positioning cylinder, with a plurality of telescopic rods inserted into one end of the outer sleeve away from the positioning cylinder, and a compression ring sleeved on the outer wall of the outer sleeve. The positioning mechanism also includes a sliding sleeve sleeved on the outer wall of the positioning rod, with a first side plate and a second side plate respectively inserted into the outer walls of the two sides of the sliding sleeve, and a first grinding cylinder and a second grinding cylinder respectively fixedly connected to the ends of the first side plate and the second side plate.

[0008] Optionally, one end of the telescopic rod is fixedly connected to an extrusion plate, the end of the telescopic rod away from the extrusion plate is fixedly connected to a bonding head, and a baffle is fixedly connected to the outer wall of the telescopic rod.

[0009] Optionally, the outer sleeve has a first limiting hole, a second limiting hole, and a third limiting hole sequentially formed from the outside to the inside at one end near the telescopic rod. The outer circumference of the first limiting hole is adapted to the outer circumference of the baffle, and the contours of the second limiting hole and the third limiting hole are adapted to the contours of the telescopic rod and the extrusion plate, respectively.

[0010] Optionally, a tension spring is fitted on the outer wall of the telescopic rod, with one end of the tension spring fixed to the baffle and the other end fixed to the end of the first limiting hole.

[0011] Optionally, the outer sleeve is provided with a plurality of clearance holes, the positions of which correspond to the positions of the extrusion plate. An extrusion block adapted to the contour of the clearance holes is fixedly connected to the inner wall of the extrusion ring. The extrusion block fits into the extrusion plate. Both ends of the extrusion ring are open structures, and the two ends of the extrusion ring are fixed together by bolts and nuts.

[0012] Optionally, the top and bottom of the positioning rod are provided with grooves, and the top and bottom inner walls of the sliding sleeve are fixedly connected with protrusions that match the contour of the grooves.

[0013] Optionally, both the first and second grinding cylinders have a semi-circular arc shape. The outer walls of both the first and second grinding cylinders are provided with grinding textures. The top of the first grinding cylinder and the bottom of the second grinding cylinder are fixedly connected with a locking block. The bottom of the first grinding cylinder and the top of the second grinding cylinder are provided with a locking groove that matches the contour of the locking block.

[0014] Optionally, a plug rod is fixedly connected to the inner wall of both the first side plate and the second side plate. The positioning rod, the sliding sleeve, and the drill bit are all provided with positioning holes that are adapted to the size of the plug rod, and the positioning rod has two positioning holes.

[0015] Optionally, the first grinding cylinder and the second grinding cylinder are joined to form a circular sleeve, and the inner circumference of the circular sleeve is adapted to the outer circumference of the drill bit.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting a positioning mechanism, the contour formed by several adhesive heads during the hole-making operation of this hole saw always remains consistent with the contour of the thermoplastic film. The positioning effect of the adhesive heads during the hole-making process can improve the stability of the drill bit, so that the hole saw is not affected by the shape of the thermoplastic film during the hole-making process, thereby improving the efficiency and convenience of hole-making. In addition, after the drill bit completes a hole-making operation, the user can use the extrusion ring to fix the adhesive heads before removing the drill bit. At this time, the contour formed by the adhesive heads is fixed. When the user performs a hole-making operation on the thermoplastic film at the same position again, he / she can directly use the fixed adhesive heads for auxiliary positioning, which improves the convenience and efficiency of the secondary hole-making operation.

[0017] By combining the first side plate and the second side plate, the sliding sleeve and the drill bit can be fixed on the positioning rod at the same time. Moreover, the circular sleeve formed by the first grinding cylinder and the second grinding cylinder can grind the holes on the thermoplastic film. This structural design is not only simple and ingenious, but also makes it convenient for users to switch between the two states of the first grinding cylinder and the second grinding cylinder.

[0018] The positioning mechanism provided in this application can be completely removed from the hole opener, which facilitates the maintenance, cleaning and replacement of the structure and improves the service life of the hole opener. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0020] Figure 1 A first-view three-dimensional structural diagram of a rapid positioning opening device for radiotherapy thermoplastic membranes; Figure 2 A second-view three-dimensional structural diagram of a rapid positioning opening device for radiotherapy thermoplastic film; Figure 3 An enlarged three-dimensional structural diagram of the main body, positioning cylinder, and positioning mechanism; Figure 4 A magnified three-dimensional structural diagram of the main body and positioning cylinder; Figure 5 An enlarged 3D structural diagram of the drive rod and positioning rod; Figure 6 A cross-sectional three-dimensional structural diagram showing the positioning cylinder, positioning rod, and positioning mechanism in conjunction. Figure 7 This is a magnified three-dimensional structural diagram of the telescopic rod; Figure 8 This is a magnified three-dimensional structural diagram of the extrusion ring; Figure 9 This is a magnified three-dimensional structural diagram of the outer sleeve; Figure 10 A cross-sectional three-dimensional structural diagram of the outer sleeve and the telescopic rod in conjunction; Figure 11 A first-person perspective three-dimensional structural diagram of the positioning cylinder, positioning rod, sliding sleeve, and drill bit assembly; Figure 12 A second-view three-dimensional structural diagram of the positioning cylinder, positioning rod, sliding sleeve, and drill bit assembly; Figure 13 A cross-sectional three-dimensional structural diagram showing the fit between the positioning cylinder, positioning rod, sliding sleeve, and drill bit; Figure 14 This is a magnified three-dimensional schematic diagram of the drill bit; Figure 15 An enlarged three-dimensional structural diagram of the sliding sleeve, the first grinding cylinder, and the second grinding cylinder in conjunction; Figure 16 This is a schematic diagram of the exploded three-dimensional structure of the first and second grinding cylinders working together.

[0021] Figure label: 1. Main body; 2. Positioning cylinder; 3. Cover plate; 4. Top support frame; 5. Hand crank handle; 6. Horizontal handle; 7. Drive gear set; 8. Drive rod; 9. Positioning rod; 10. Groove; 11. Positioning hole; 12. Outer sleeve; 13. First limiting hole; 14. Second limiting hole; 15. Third limiting hole; 16. Clearance hole; 17. Extrusion ring; 18. Extrusion block; 19. Telescopic rod; 20. Extrusion plate; 21. Adhesive head; 22. Baffle; 23. Tension spring; 24. Sliding sleeve; 25. Protrusion; 26. First side plate; 27. First grinding cylinder; 28. Second side plate; 29. ​​Second grinding cylinder; 30. Insert rod; 31. Locking block; 32. Locking groove; 33. Drill bit.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0023] The rapid positioning opening device for radiotherapy thermoplastic film provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0024] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0025] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0026] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0027] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0028] like Figures 1 to 5 As shown, an embodiment of the present invention provides a rapid positioning and opening device for radiotherapy thermoplastic film, including a main body 1. A positioning cylinder 2 is fixedly connected to one end of the main body 1. A horizontal handle 6 is fixedly connected to the outer wall of the end of the main body 1 near the positioning cylinder 2. A top support 4 is fixedly connected to the end of the main body 1 away from the positioning cylinder 2. Cover plates 3 are fixedly connected to the top and bottom of the main body 1. A hand crank handle 5 is rotatably connected to the outer wall of the main body 1. A drive gear set 7 is installed inside the main body 1. A drive rod 8 is rotatably connected inside the positioning cylinder 2. A positioning rod 9 is fixedly connected to the end of the drive rod 8 away from the main body 1. A drill bit 33 is installed inside the positioning rod 9.

[0029] The hole saw provided in this application is a handheld structural system. During use, the user needs to hold the horizontal handle 6 with one hand and the hand crank handle 5 with the other hand to hold the entire hole saw. Furthermore, by installing a top support 4 at the end of the main body 1, the user can place the plate at the end of the top support 4 against their body during the process, which helps to maintain the stability of the overall structure of the hole saw, facilitates the user's application of force, and improves the ease of use of the hole saw.

[0030] Furthermore, a drive gear set 7 is provided inside the main body 1. When the user rotates the hand crank handle 5, the drive gear set 7 can be driven to operate, and the drive rod 8 will rotate under the driving action of the drive gear set 7. Since the drill bit 33 is fixed to the end of the drive rod 8, the drive rod 8 can drive the drill bit 33 to rotate during rotation, thereby performing hole processing on the opening position on the thermoplastic film. In this technical solution, the working principle of the user rotating the hand crank handle 5 to drive the drive gear set 7 to operate, and the drive gear set 7 driving the drive rod 8 to rotate, are disclosed as prior art. The structure of the drive gear set 7 is a conventional and mature drive structure in the field of mechanical technology, and will not be described in detail here.

[0031] As one implementation method in this embodiment, such as Figures 6 to 10 As shown, the positioning mechanism is used to assist the user in positioning and punching holes in the thermoplastic film. The positioning mechanism is connected to the positioning cylinder 2 and the positioning rod 9 respectively. The positioning mechanism includes an outer sleeve 12 screwed to the end of the positioning cylinder 2. A plurality of telescopic rods 19 are inserted into the end of the outer sleeve 12 away from the positioning cylinder 2. An extrusion plate 20 is fixedly connected to one end of the telescopic rod 19, and a bonding head 21 is fixedly connected to the end of the telescopic rod 19 away from the extrusion plate 20. A baffle 22 is fixedly connected to the outer wall of the telescopic rod 19. 2. A first limiting hole 13, a second limiting hole 14, and a third limiting hole 15 are sequentially provided from the outside to the inside near one end of the telescopic rod 19. The outer circumference of the first limiting hole 13 is adapted to the outer circumference of the baffle 22. The outlines of the second limiting hole 14 and the third limiting hole 15 are adapted to the outlines of the telescopic rod 19 and the extrusion plate 20, respectively. A tension spring 23 is sleeved on the outer wall of the telescopic rod 19. One end of the tension spring 23 is fixed to the baffle 22, and the other end is fixed to the end of the first limiting hole 13.

[0032] In the above structure, several telescopic rods 19 are inserted into the end of the outer sleeve 12. Since the contours of the second limiting hole 14 and the third limiting hole 15 are adapted to the contours of the telescopic rods 19 and the extrusion plate 20 respectively, the telescopic rods 19 are limited to slide at the end of the outer sleeve 12 under the limiting action of the second limiting hole 14 and the third limiting hole 15, and cannot rotate during the sliding process. In the initial state, under the tension of the tension spring 23, the baffle 22 slides towards the adhesive head 21. At this time, the height of the adhesive head 21 is greater than the height of the drill bit 33, and several telescopic rods 19 wrap around the outside of the drill bit 33. At this time, the user aligns the hole opener with the position where the thermoplastic film needs to be opened, and then lets the adhesive head 21 adhere to the outer wall of the thermoplastic film. Since the overall contour of the cooled thermoplastic film is uneven, when the user makes When the user continuously presses the outer sleeve 12 to squeeze the thermoplastic film with the adhesive head 21, the tension spring 23 is stretched and deformed under the pressure. At this time, several telescopic rods 19 will slide and extend adaptively within the second limiting hole 14 according to the contour of the thermoplastic film, so that each adhesive head 21 can firmly abut against the outer wall of the thermoplastic film. This setting ensures that during the hole-making operation, the contour formed by several adhesive heads 21 always remains consistent with the contour of the thermoplastic film. As the telescopic rods 19 continue to slide, the drill bit 33 gradually approaches the thermoplastic film and performs hole-making processing. During the hole-making process, the positioning effect of the adhesive head 21 can improve the stability of the drill bit 33, so that the hole-making process is not affected by the shape of the thermoplastic film, thus improving the efficiency and convenience of operation.

[0033] In this embodiment, as Figures 6 to 10 As shown, an extrusion ring 17 is fitted on the outer wall of the outer sleeve 12. Several clearance holes 16 are opened on the outer sleeve 12. The positions of the clearance holes 16 correspond to the positions of the extrusion plate 20. An extrusion block 18 that matches the contour of the clearance hole 16 is fixedly connected to the inner wall of the extrusion ring 17. The extrusion block 18 fits against the extrusion plate 20. Both ends of the extrusion ring 17 are open structures, and the two ends of the extrusion ring 17 are fixed together by bolts and nuts.

[0034] As mentioned above, since both ends of the extrusion ring 17 are open structures, when the user continuously rotates the nut, the two ends of the extrusion ring 17 will move closer to each other. At this time, the extrusion block 18, which was originally attached to the surface of the extrusion plate 20, will continue to press the extrusion plate 20 and fix it. After the extrusion plate 20 is fixed, the telescopic rod 19 can no longer slide at the end of the outer sleeve 12. At this time, some of the plug heads 21 are fixed by the extrusion ring 17, and the outline formed by several plug heads 21 cannot be changed. This setting makes the hole opener usable... During the process, once the outline formed by several adhesive heads 21 matches the outline of the thermoplastic film, the user can continue to press the outer sleeve 12 to allow the drill bit 33 to drill into the thermoplastic film. After the drill bit 33 completes one drilling operation, the user can use the compression ring 17 to fix the adhesive heads 21 before removing the drill bit 33. At this time, the outline formed by the adhesive heads 21 is fixed. When the user performs another drilling operation on the thermoplastic film at the same position, they can directly use the fixed adhesive heads 21 for auxiliary positioning, which improves the convenience and efficiency of the secondary drilling operation.

[0035] It is worth mentioning that thermoplastic film has a certain degree of hardness after cooling. During the hole-making process, it is often necessary to repeatedly drill holes in the same position. The purpose of this operation is to ensure the integrity of the holes in the thermoplastic film and avoid too many burrs and residues in the hole.

[0036] In this embodiment, as Figures 11 to 16 As shown, the positioning mechanism also includes a sliding sleeve 24 sleeved on the outer wall of the positioning rod 9. The top and bottom of the positioning rod 9 are provided with grooves 10. The top and bottom inner walls of the sliding sleeve 24 are fixedly connected with protrusions 25 that match the contour of the grooves 10. The outer walls on both sides of the sliding sleeve 24 are respectively inserted with a first side plate 26 and a second side plate 28. The inner walls of the first side plate 26 and the second side plate 28 are fixedly connected with insert rods 30. The positioning rod 9, the sliding sleeve 24 and the drill bit 33 are all provided with positioning holes 11 that match the size of the insert rods 30. The positioning rod 9 has two positioning holes 11.

[0037] In the above structure, the sliding sleeve 24 is sleeved on the outside of the positioning rod 9. Since the contours of the protrusion 25 and the groove 10 are compatible, the sliding sleeve 24 can be limited by the protrusion 25 and the groove 10, so that the sliding sleeve 24 will not be misaligned or rotated during the sliding process on the outer wall of the positioning rod 9. In the initial state, the user slides the sliding sleeve 24 to the end of the positioning rod 9. At this time, the insert rod 30 in the first side plate 26 and the second side plate 28 are simultaneously inserted into the positioning holes 11 on the positioning rod 9, the sliding sleeve 24 and the drill bit 33. Under the blocking and limiting action of the insert rod 30, the sliding sleeve 24 is fixed on the outer wall of the positioning rod 9 and the drill bit 33 is fixed on the inner wall of the positioning rod 9.

[0038] In this embodiment, as Figures 11 to 16 As shown, the ends of the first side plate 26 and the second side plate 28 are respectively fixedly connected to the first grinding cylinder 27 and the second grinding cylinder 29. The first grinding cylinder 27 and the second grinding cylinder 29 are both semi-circular arc-shaped contours. The outer walls of the first grinding cylinder 27 and the second grinding cylinder 29 are provided with grinding textures. The first grinding cylinder 27 and the second grinding cylinder 29 form a circular sleeve, and the inner circumference of the circular sleeve is adapted to the outer circumference of the drill bit 33. The top end of the first grinding cylinder 27 and the bottom end of the second grinding cylinder 29 are both fixedly connected to the locking block 31. The bottom end of the first grinding cylinder 27 and the top end of the second grinding cylinder 29 are both provided with a locking groove 32 that is adapted to the contour of the locking block 31.

[0039] As mentioned above, when the user slides the sliding sleeve 24 to the end of the positioning rod 9, the sliding sleeve 24 and the drill bit 33 can be fixed by means of the insertion rod 30 on the first side plate 26 and the second side plate 28. At this time, the first grinding cylinder 27 and the second grinding cylinder 29 are snapped together, and the circular sleeve formed by the two is located at the tail of the drill bit 33. Since the inner circumference of the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 is compatible with the outer circumference of the drill bit 33, when the first grinding cylinder 27 and the second grinding cylinder 29 are located at the tail of the drill bit 33, it will not affect the drill bit 33 from performing hole opening on the thermoplastic film.

[0040] Furthermore, after the drill bit 33 has completed the drilling process on the thermoplastic film, the user can slide the sliding sleeve 24 to the front end of the positioning rod 9. At this time, when the sliding sleeve 24 is fixed again by the insertion rod 30 on the first side plate 26 and the second side plate 28, the drill bit 33 can be removed from the positioning rod 9. It is worth mentioning that the distance between the two positioning holes 11 on the positioning rod 9 is exactly equal to the length of the drill bit 33 extending from the end of the positioning rod 9. Therefore, when the user fixes the sliding sleeve 24 to the front end of the positioning rod 9, the position of the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 is exactly the same as the original position of the front end of the drill bit 33. At this time, when the drive rod 8 rotates, the outer walls of the first grinding cylinder 27 and the second grinding cylinder 29 can grind the drilled hole on the thermoplastic film to remove the burrs inside the hole.

[0041] In summary, the first side plate 26 and the second side plate 28 have two usage states: When the user slides the sliding sleeve 24 to the tail of the positioning rod 9, the insert rod 30 on the first side plate 26 and the second side plate 28 can simultaneously fix the sliding sleeve 24 and the drill bit 33 to the positioning rod 9. At this time, the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 is located at the tail of the drill bit 33. During the drilling process of the drill bit 33, the first grinding cylinder 27 and the second grinding cylinder 29 will not affect the normal use of the drill bit 33; when the user slides the sliding sleeve 24 to the front of the positioning rod 9... At this time, the insert rods 30 on the first side plate 26 and the second side plate 28 can fix the sliding sleeve 24, and the drill bit 33 can be removed from the positioning rod 9. At this time, the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 is located at the original front end position of the drill bit 33. The user can use the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 to grind the holes on the thermoplastic film. This structure is not only simple and ingenious, but also convenient for the user to switch between the two states of the first grinding cylinder 27 and the second grinding cylinder 29.

[0042] The working principle of the technical solution provided by this invention is as follows: In use, the user holds the horizontal handle 6 with one hand and the hand crank handle 5 with the other, holding the entire hole opener in their hand. Then, the user presses the plate at the end of the top support 4 against their body to maintain the stability of the overall structure of the hole opener, making it easier for the user to apply force. Then, the user slides the sliding sleeve 24 to the end of the positioning rod 9, so that the insert rods 30 in the first side plate 26 and the second side plate 28 are simultaneously inserted into the positioning holes 11 on the positioning rod 9, the sliding sleeve 24, and the drill bit 33. Under the blocking and limiting action of the insert rod 30, the sliding sleeve 24 is fixed to the outer wall of the positioning rod 9, and the drill bit 33 is fixed to the inner wall of the positioning rod 9. Finally, the user screws the outer sleeve 12 to the end of the positioning cylinder 2.

[0043] After the above operations are completed, the user aligns the hole opener with the desired opening position on the thermoplastic film, allowing the adhesive head 21 to adhere to the outer wall of the thermoplastic film. Because the overall contour of the cooled thermoplastic film is uneven, when the user continuously presses the outer sleeve 12 to compress the adhesive head 21 against the thermoplastic film, the tension spring 23 is stretched and deformed under pressure. At this time, several telescopic rods 19 will adaptively slide and extend within the second limiting hole 14 according to the contour of the thermoplastic film, ensuring that each adhesive head 21 firmly abuts against the outer wall of the thermoplastic film. As the telescopic rods 19 continue to slide, the drill bit 33 gradually approaches the thermoplastic film. When the user turns the hand crank handle 5, the drive gear set 7 is driven to rotate. Under the action of the drive gear set 7, the drive rod 8 rotates. Since the drill bit 33 is fixed at the end of the drive rod 8, the drive rod 8 can drive the drill bit 33 to rotate during the rotation, thereby performing hole processing on the opening position on the thermoplastic film. During the hole-opening process, the outline formed by several adhesive heads 21 always keeps in line with the outline of the thermoplastic film. With the positioning effect of the adhesive heads 21, the stability of the drill bit 33 can be improved, so that the hole opener is not affected by the shape of the thermoplastic film during the hole-opening process, thus improving the efficiency of hole opening and the convenience of operation.

[0044] After the thermoplastic film is perforated once, the user can tighten the nuts on both ends of the extrusion ring 17 before removing the drill bit 33. The threads of the nuts and bolts will bring the two ends of the extrusion ring 17 closer together. At this time, the extrusion block 18, which was originally attached to the surface of the extrusion plate 20, will continue to press the extrusion plate 20 and fix it. After the extrusion plate 20 is fixed, the telescopic rod 19 can no longer slide at the end of the outer sleeve 12. At this time, some of the adhesive heads 21 are fixed by the extrusion ring 17, and the outline formed by several adhesive heads 21 cannot be changed. When the user performs another perforation operation on the thermoplastic film at the same location, he / she can directly use the fixed adhesive heads 21 for auxiliary positioning, which improves the convenience and efficiency of the secondary perforation operation.

[0045] After the drilling operation is completed, the user slides the sliding sleeve 24 to the front end of the positioning rod 9. At this time, when the sliding sleeve 24 is fixed again by the insertion rod 30 on the first side plate 26 and the second side plate 28, the drill bit 33 can be removed from the positioning rod 9. At this time, the position of the circular sleeve formed by the first grinding cylinder 27 and the second grinding cylinder 29 is exactly the same as the original position of the front end of the drill bit 33. Then, when the hand crank handle 5 drives the drive rod 8 to rotate, the outer walls of the first grinding cylinder 27 and the second grinding cylinder 29 can grind the hole opened on the thermoplastic film to remove the burrs inside the hole.

[0046] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rapid positioning opening device for radiotherapy thermoplastic films, comprising a main body, characterized in that, A positioning cylinder is fixedly connected to one end of the main body. A horizontal handle is fixedly connected to the outer wall of the main body near the positioning cylinder. A top support is fixedly connected to the end of the main body away from the positioning cylinder. Cover plates are fixedly connected to the top and bottom of the main body. A hand crank is rotatably connected to the outer wall of the main body. A drive gear set is installed inside the main body. A drive rod is rotatably connected inside the positioning cylinder. A positioning rod is fixedly connected to the end of the drive rod away from the main body. A drill bit is installed inside the positioning rod. A positioning mechanism is provided to assist the user in positioning and punching holes in the thermoplastic film. The positioning mechanism is connected to the positioning cylinder and the positioning rod respectively.

2. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 1, characterized in that, The positioning mechanism includes an outer sleeve screwed to the end of the positioning cylinder. Several telescopic rods are inserted into the end of the outer sleeve away from the positioning cylinder. An extrusion ring is sleeved on the outer wall of the outer sleeve. The positioning mechanism also includes a sliding sleeve sleeved on the outer wall of the positioning rod. A first side plate and a second side plate are respectively inserted into the outer walls of the two sides of the sliding sleeve. A first grinding cylinder and a second grinding cylinder are respectively fixedly connected to the ends of the first side plate and the second side plate.

3. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 2, characterized in that, One end of the telescopic rod is fixedly connected to an extrusion plate, the other end of the telescopic rod away from the extrusion plate is fixedly connected to a fitting head, and a baffle is fixedly connected to the outer wall of the telescopic rod.

4. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 3, characterized in that, The outer sleeve has a first limiting hole, a second limiting hole, and a third limiting hole sequentially formed from the outside to the inside at one end near the telescopic rod. The outer circumference of the first limiting hole is adapted to the outer circumference of the baffle. The contours of the second limiting hole and the third limiting hole are adapted to the contours of the telescopic rod and the extrusion plate, respectively.

5. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 4, characterized in that, A tension spring is fitted on the outer wall of the telescopic rod. One end of the tension spring is fixed to the baffle, and the other end is fixed to the end of the first limiting hole.

6. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 3, characterized in that, The outer sleeve has several clearance holes, the positions of which correspond to the positions of the extrusion plate. An extrusion block that matches the outline of the clearance holes is fixedly connected to the inner wall of the extrusion ring. The extrusion block fits into the extrusion plate. Both ends of the extrusion ring are open structures, and the two ends of the extrusion ring are fixed together by bolts and nuts.

7. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 2, characterized in that, The top and bottom of the positioning rod are provided with grooves, and the top and bottom inner walls of the sliding sleeve are fixedly connected with protrusions that match the contour of the grooves.

8. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 2, characterized in that, Both the first and second grinding cylinders have a semi-circular arc shape. The outer walls of both the first and second grinding cylinders are provided with grinding textures. The top of the first grinding cylinder and the bottom of the second grinding cylinder are fixedly connected with a locking block. The bottom of the first grinding cylinder and the top of the second grinding cylinder are provided with a locking groove that matches the outline of the locking block.

9. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 2, characterized in that, Insert rods are fixedly connected to the inner walls of the first side plate and the second side plate. The positioning rod, the sliding sleeve and the drill bit are all provided with positioning holes that are adapted to the size of the insert rods. The positioning rod has two positioning holes.

10. The rapid positioning and opening device for radiotherapy thermoplastic film according to claim 2, characterized in that, The first grinding cylinder and the second grinding cylinder together form a circular sleeve, and the inner circumference of the circular sleeve is adapted to the outer circumference of the drill bit.

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