Radiotherapy thermoplastic film tapper

Abstract

The utility model relates to a radiotherapy thermoplastic film tapper which comprises a support, a handle is arranged at the upper end of the support, a cutting column is arranged on the left side of the lower end of the support, a cutting knife is arranged at the lower end of the cutting column, a positioning column is movably installed on the right side of the lower end of the support, and a positioning head is arranged at the lower end of the positioning column. The size of the positioning head is matched with the size of a mesh in a thermoplastic film, and the device further comprises a position adjusting device which is used for adjusting the distance between the positioning column and the cutting column. The radiotherapy thermoplastic film tapper provided by the utility model is simple and small in structure, can be operated by a single hand, is not limited by the size and the shape of a thermoplastic film, has regular edges of formed holes, is adjustable in hole diameter, and is higher in flexibility and practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a radiotherapy thermoplastic film hole opener. Background Art

[0002] Radiotherapy has a wide range of applications and is not limited to cancer. It is also used to treat some benign tumors, such as pituitary tumors, parotid tumors, meningiomas, etc., as well as esophageal diseases, thyroid diseases and blood system diseases.

[0003] The mainstream equipment for radiotherapy position fixation uses thermoplastic film. Thermoplastic film is a new type of medical material with shape memory function, mainly composed of polyester composed of polymer materials. It is a hard sheet at room temperature, but becomes soft when heated to 65-70°C, so that it can be shaped according to the patient's body contour. Once cooled at room temperature, the thermoplastic film will quickly harden and take shape, thereby fixing the patient's position. Thermoplastic film is widely used in the position fixation of radiotherapy patients, especially for radiotherapy positioning and reduction. It can ensure accurate and firm fixation, thereby improving the treatment effect and reducing damage to normal human tissues. Due to its excellent performance and adaptability, thermoplastic film has become the recognized preferred technology for radiotherapy positioning and fixation at home and abroad, and is also the best product to replace vacuum pads for positioning and fixation.

[0004] After the thermoplastic film is shaped, it needs to be punched before it can be used for patient treatment. At present, the hole-punching operation of thermoplastic film mainly relies on traditional tools such as utility knives, scissors and hole punchers. However, when using a utility knife or scissors to make holes, due to the thickness and hardness of the thermoplastic film itself, not only is the operation process cumbersome and time-consuming, but the cutting position is also limited, resulting in unsatisfactory work efficiency and quality. More importantly, the edges of the incisions made in this way are often irregular and have burrs, which not only affects the comfort of the patient, but may also accidentally injure patients and medical staff, posing a major safety hazard. If you are not careful, other areas outside the opening may be scratched.

[0005] A punch can also be used to make holes, such as a radiotherapy body membrane square hole punch disclosed in Chinese patent CN210025538U, which includes a central axis rod, a reverse crank, a compression spring, an end cover, a push rod, a protective cover, a square knife holder, a fixed plate, a knife body, a handle, a main body, a rotating shaft, a spur gear, a reinforcing plate, a base and a knife groove plate; the main body is an L-cantilever structure, the end of which is fixedly connected to the base, and the connection position is reinforced by a reinforcing plate; the main body is provided with two orthogonal axis holes, horizontal and vertical, and the corresponding central axis rod passes through the compression spring and is inserted into the vertical axis hole; the spur gear is fixed on the rotating shaft and inserted into the horizontal axis hole of the main body, and The central axis rods mesh with each other to form a gear rack connection; the end caps pass through the rotating shaft from both sides and leave a rotation gap with the main body; the reverse cranks on the outer side of the end caps are fixed to the two ends of the rotating shaft respectively; the reverse cranks are fixed to the handles, and the rotating shaft is driven to rotate by the up and down movement of the reverse cranks, thereby driving the spur gear and the central axis rod to move; a fixing hole is set at the bottom of the central axis rod, and the corresponding square tool holder passes through the protective cover and is inserted into the hole of the central axis rod for fixing; the square tool holder is connected and fixed to the outer fixing plate; the main body is close to the square tool holder side, and the corresponding top rod is installed on the main body, and the height is adjusted to be consistent, and the base corresponds to the center position of the central axis rod. The fixed knife groove plate is installed. When the mechanism is in use, the operator applies force to move the reverse crank up and down, driving the rotating shaft to rotate, and then driving the spur gear to rotate, and the spur gear drives the central axis rod to move up and down, and then the square tool holder moves up and down, realizing the process of opening a square treatment port at a specific position of the complex curved radiotherapy body membrane.

[0006] Although the aforementioned prior art is more regular and more accurate in size than the square treatment openings made manually, the shape of the hardened thermoplastic film is often irregular and arched, making it extremely difficult to locate and punch holes. In addition, due to the limitation of the main body length, many areas on the thermoplastic film cannot be effectively punched. Therefore, the existing thermoplastic film punching device urgently needs to be improved to improve efficiency and safety and meet the needs of practical applications. Utility Model Content

[0007] The utility model is intended to provide a radiotherapy thermoplastic film hole opener to solve the deficiencies in the prior art. The technical problem to be solved by the utility model is achieved through the following technical solutions.

[0008] A radiotherapy thermoplastic film hole opener comprises a support, wherein a handle is arranged at the upper end of the support, a cutting column is arranged at the left side of the lower end of the support, a cutting blade is arranged at the lower end of the cutting column, a positioning column is movably installed at the right side of the lower end of the support, a positioning head is arranged at the lower end of the positioning column, the size of the positioning head matches the size of the mesh on the thermoplastic film, and also comprises a position adjustment device, which is used to adjust the distance between the positioning column and the cutting column.

[0009] Preferably, the position adjustment device includes a connecting pin, an adjusting pin and a compression spring, the positioning column is installed at the bottom end of the connecting pin, the support is provided with a receiving groove which runs through the front and rear, the connecting pin is horizontally placed in the receiving groove, the connecting pin is fixedly connected to the support through a locking nut, a through groove is provided on the bottom surface of the support, after the connecting pin is placed in the receiving groove, the positioning column is placed in the through groove, an adjusting pin is installed at the right end of the support, the left end of the adjusting pin abuts against the connecting pin, the length of the adjusting pin extending into the receiving groove is adjustable, and the compression spring is arranged between the left side of the connecting pin and the left end face of the receiving groove of the support.

[0010] Preferably, a square column portion is provided at a portion of the connecting pin located in the accommodating groove, and a left end portion of the adjusting pin abuts against a right end surface of the square column portion.

[0011] Preferably, a scale line is provided on the front side surface of the support at a position above the accommodating groove.

[0012] Preferably, the front end of the connecting pin extends out of the receiving groove and is fixed to the support through a locking nut, a spacer is provided between the locking nut and the front end surface of the support, an arrow is provided on the spacer, and the diameter of the spacer is greater than the height of the receiving groove.

[0013] Preferably, a pressure ring is provided on the positioning head, and the distance between the pressure ring and the bottom end surface of the positioning head is adjustable.

[0014] Preferably, the pressure ring is made of polyurethane or nylon.

[0015] Preferably, a heating device is provided in the cutting column, and the heating device is used to heat the cutting blade.

[0016] Preferably, a receiving hole is provided in the cutting column, and the receiving hole is used to receive the electric wire. A heating block is provided in the cutting column, and one end of the electric wire is connected to an external heating power source, and the other end is connected to the heating block.

[0017] Preferably, the cutting column and the cutting blade are made of stainless steel.

[0018] In the utility model, when the medical staff performs the hole-making operation on the thermoplastic film, they first adjust the spacing between the positioning column and the cutting column according to the size of the hole to be made, then insert the positioning head into the mesh located at the center of the hole to be made on the thermoplastic film, and then hold the handle while pressing down and rotating. When pressing down, the thermoplastic film is deformed under the pressure of the positioning column and the cutting column so that the area to be made is temporarily flat. By rotating the handle, the cutting blade moves in a compass on the thermoplastic film, thereby cutting and opening a circular hole on the thermoplastic film for subsequent treatment. The setting of the heating device makes the thermoplastic film partially softened by heat, which is more convenient for cutting, and the inner circle of the hole after cutting is not easy to produce burrs.

[0019] The utility model provides a radiotherapy thermoplastic film hole opener, which has a simple and compact structure, can be operated with one hand, is not limited by the size and shape of the thermoplastic film, has regular edges of the opened holes, and has an adjustable hole size, thus having higher flexibility and practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the heating device in the utility model;

[0023] The reference numerals in the accompanying drawings are: 1. support, 11. accommodating groove, 12. through groove, 13. scale line, 2. handle, 3. cutting column, 31. cutting blade, 32. accommodating hole, 4. positioning column, 41. positioning head, 42. pressing ring, 51. connecting pin, 511. square column part, 512. threaded part, 52. locking nut, 53. adjusting pin, 54. compression spring, 55. spacer, 551. arrow, 61. heating block, 62. wire. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Embodiment 1:

[0026] Reference Figure 1As shown, a radiotherapy thermoplastic film hole opener is improved in that it includes a support 1, a handle 2 is provided at the upper end of the support 1, a cutting column 3 is provided on the left side of the lower end of the support 1, and a cutting blade 31 is provided at the lower end of the cutting column 3, a positioning column 4 is movably installed on the right side of the lower end of the support 1, and a positioning head 41 is provided at the lower end of the positioning column 4, and the size of the positioning head 41 matches the size of the mesh on the thermoplastic film, and also includes a position adjustment device, which is used to adjust the distance between the positioning column 4 and the cutting column 3.

[0027] In this embodiment, when the medical staff performs the hole-making operation on the thermoplastic film, they first adjust the distance between the positioning column 4 and the cutting column 3 according to the size of the hole to be made, then insert the positioning head 41 into the mesh located at the center of the hole to be made on the thermoplastic film, and then hold the handle 2 while pressing downward and rotating. When pressing downward, the thermoplastic film is deformed under the pressure of the positioning column 4 and the cutting column 3 so that the area to be made is temporarily flat. By rotating the handle 2, the cutting blade 31 moves in a compass-like manner on the thermoplastic film, thereby cutting and opening a circular hole on the thermoplastic film for subsequent treatment.

[0028] The radiotherapy thermoplastic film hole opener provided in this embodiment has a simple and compact structure, can be operated with one hand, is not limited by the size and shape of the thermoplastic film, has regular edges of the opened holes, and has adjustable hole sizes, which is more flexible and practical.

[0029] Furthermore, the handle 2 is detachably fixedly connected to the support 1, which facilitates replacement of the handle 2 with different shapes and lengths, and is more practical.

[0030] Embodiment 2:

[0031] Based on Example 1, Figure 2 As shown, the position adjustment device includes a connecting nail 51, an adjusting nail 53 and a compression spring 54, the positioning column 4 is installed at the bottom end of the connecting nail 51, and a front-to-back accommodating groove 11 is provided on the support 1, the connecting nail 51 is horizontally placed in the accommodating groove 11, the connecting nail 51 is fixedly connected to the support 1 through a locking nut 52, and a through groove 12 is provided on the bottom surface of the support 1. After the connecting nail 51 is placed in the accommodating groove 11, the positioning column 4 is placed in the through groove 12, and an adjusting nail 53 is installed at the right end of the support 1, and the left end of the adjusting nail 53 abuts against the connecting nail 51, and the length of the adjusting nail 53 extending into the accommodating groove 11 is adjustable, and the compression spring 54 is arranged between the left side of the connecting nail 51 and the left end face of the accommodating groove 11 of the support 1.

[0032] Furthermore, a square column portion 511 is provided at the portion of the connecting pin 51 located in the receiving groove 11 , and a left end portion of the adjusting pin 53 abuts against a right end surface of the square column portion 511 .

[0033] In this embodiment, when adjusting the distance between the cutting column 3 and the positioning column 4, the locking nut 52 is first screwed to loosen the connection between the connecting pin 51 and the support 1, and then the adjusting pin 53 is screwed to extend or shorten the length of the left end of the adjusting pin 53 extending from the right bottom surface of the receiving groove 11, so that the connecting pin 51 moves leftward or rightward as the adjusting pin 53 is screwed, and the compression spring 54 is always pressed against the connecting pin 51 due to being compressed, so that the connecting pin 51 moves closely following the left end of the adjusting pin 53. After the connecting pin 51 moves to the target position, the locking nut 52 is screwed to fix the position between the connecting pin 51 and the support 1, so that the distance between the positioning column 4 and the cutting column 3 is adjusted and fixed. The arrangement of the compression spring 54 and the adjusting pin 53 prevents the connecting pin 51 from shaking too much in the receiving groove 11 after the locking nut 52 is loosened, so that the moving distance of the connecting pin 51 is more controllable when the position of the connecting pin 51 is adjusted. The setting of the column portion 511 above the connecting pin 51, on the one hand, increases the abutment area of ​​the end of the adjusting pin 53, making it easier to bear force; on the other hand, the square column portion 511 matches the size of the accommodating groove 11, and its function is the same as that between the slide groove and the slider, and can better limit the freedom of the connecting pin 51 except for left and right movement, so that the movement of the connecting pin 51 is smoother and more stable.

[0034] Furthermore, a scale line 13 is provided on the front side surface of the support 1 above the receiving groove 11 .

[0035] Furthermore, the front end of the connecting pin 51 extends out of the receiving groove 11 and is fixed to the support 1 through a locking nut 52. A spacer 55 is provided between the locking nut 52 and the front end surface of the support 1. An arrow 551 is provided on the spacer 55. The diameter of the spacer 55 is greater than the height of the receiving groove 11.

[0036] In this embodiment, the arrangement of the scale line 13 and the arrow 551 on the spacer 55 makes the spacing adjustment between the positioning column 4 and the cutting column 3 more accurate and controllable.

[0037] Furthermore, a pressure ring 42 is sleeved on the positioning head 41 , and the distance between the pressure ring 42 and the bottom end surface of the positioning head 41 is adjustable.

[0038] In this embodiment, the setting of the pressure ring 42, on the one hand, limits the length of the bottom end of the positioning head 41 extending too long from the bottom surface of the thermoplastic film, thereby avoiding damage to the items under the thermoplastic film; on the other hand, the pressure ring 42 increases the contact area between the positioning head 41 and the thermoplastic film, making it easier to apply pressure to the thermoplastic film when opening a hole so that the part of the thermoplastic film to be opened is temporarily flat, thereby making it easier to cut.

[0039] Furthermore, the pressure ring 42 is made of polyurethane or nylon material.

[0040] In this embodiment, the pressing ring 42 made of polyurethane or nylon material has both certain hardness and certain flexibility, so as to avoid damage to the surface of the thermoplastic film during the pressing process.

[0041] Embodiment 3:

[0042] Based on Example 1 or 2, Figure 3 As shown, a heating device is provided in the cutting column 3 , and the heating device is used to heat the cutting blade 31 .

[0043] In this embodiment, the setting of the heating device can heat the cutting blade 31 so that the cutting blade 31 has a certain temperature, so that when cutting and opening a hole in the thermoplastic film, the thermoplastic film is locally softened by heat, which makes it easier to cut, and burrs are not easy to form on the inner circle of the hole after cutting.

[0044] Furthermore, a receiving hole 32 is provided in the cutting column 3 for receiving the electric wire 62 . A heating block 61 is provided in the cutting column 3 . One end of the electric wire 62 is connected to an external heating power source, and the other end is connected to the heating block 61 .

[0045] Furthermore, the cutting column 3 and the cutting blade 31 are made of stainless steel.

[0046] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0049] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0050] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0051] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A radiotherapy thermoplastic film hole opener, characterized in that: The invention comprises a support (1), wherein a handle (2) is arranged at the upper end of the support (1), a cutting column (3) is arranged on the left side of the lower end of the support (1), a cutting blade (31) is arranged at the lower end of the cutting column (3), a positioning column (4) is movably mounted on the right side of the lower end of the support (1), a positioning head (41) is arranged at the lower end of the positioning column (4), the size of the positioning head (41) matches the size of the mesh on the thermoplastic film, and also comprises a position adjustment device, wherein the position adjustment device is used to adjust the distance between the positioning column (4) and the cutting column (3).

2. A radiotherapy thermoplastic film hole opener according to claim 1, characterized in that: The position adjustment device comprises a connecting pin (51), an adjusting pin (53) and a compression spring (54); the positioning column (4) is installed at the bottom end of the connecting pin (51); a receiving groove (11) penetrating from front to back is provided on the support (1); the connecting pin (51) is horizontally placed in the receiving groove (11); the connecting pin (51) is fixedly connected to the support (1) through a locking nut (52); a through groove (12) is provided on the bottom surface of the support (1); After the connecting pin (51) is placed in the receiving groove (11), the positioning column (4) is placed in the through groove (12), and an adjusting pin (53) is installed at the right end of the support (1). The left end of the adjusting pin (53) abuts against the connecting pin (51), and the length of the adjusting pin (53) extending into the receiving groove (11) is adjustable. The compression spring (54) is arranged between the left side of the connecting pin (51) and the left end surface of the receiving groove (11) of the support (1).

3. A radiotherapy thermoplastic film hole opener according to claim 2, characterized in that: The portion of the connecting pin (51) located in the accommodating groove (11) is provided with a square column portion (511), and the left end portion of the adjusting pin (53) abuts against the right end surface of the square column portion (511).

4. The radiotherapy thermoplastic film hole opener according to claim 2, characterized in that: A scale line (13) is provided on the front side surface of the support (1) at a position above the accommodating groove (11).

5. The radiotherapy thermoplastic film hole opener according to claim 4, characterized in that: The front end of the connecting pin (51) extends out of the receiving groove (11) and is connected and fixed to the support (1) through a locking nut (52); a spacer (55) is provided between the locking nut (52) and the front end surface of the support (1); an arrow (551) is provided on the spacer (55); and the diameter of the spacer (55) is greater than the height of the receiving groove (11).

6. The radiotherapy thermoplastic film hole opener according to claim 1, characterized in that: The positioning head (41) is sleeved with a pressure ring (42), and the distance between the pressure ring (42) and the bottom end surface of the positioning head (41) is adjustable.

7. The radiotherapy thermoplastic film hole opener according to claim 6, characterized in that: The pressure ring (42) is made of polyurethane or nylon material.

8. The radiotherapy thermoplastic film hole opener according to claim 1, characterized in that: A heating device is provided inside the cutting column (3), and the heating device is used to heat the cutting blade (31).

9. The radiotherapy thermoplastic film hole opener according to claim 7, characterized in that: The cutting column (3) is provided with a receiving hole (32) for receiving an electric wire (62). The cutting column (3) is provided with a heating block (61). One end of the electric wire (62) is connected to an external heating power source, and the other end is connected to the heating block (61).

10. The radiotherapy thermoplastic film hole opener according to claim 1, characterized in that: The cutting column (3) and the cutting blade (31) are made of stainless steel.

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