Body membrane trimming device for breast cancer radiotherapy

Abstract

The invention discloses a breast cancer radiotherapy body membrane trimming device, and relates to the technical field of medical instruments, the breast cancer radiotherapy body membrane trimming device comprises a control part, a longitudinal positioning part and an area positioning part, the whole is locked, a heating wire is fitted at a mammary gland marking position through a support ring, then the heating wire is electrified and heated, and the mammary gland position of the body membrane is sheared. The effect of supporting the body position of a patient by the body film is reserved, the problem that the skin irradiation dose is increased due to the body film is solved, the effect of accurately trimming the body film is finally achieved, and the purpose of accurate radiotherapy is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a breast cancer radiotherapy body membrane trimming device. Background Art

[0002] Radiation therapy is a method of treating tumors. It uses high-energy X-rays or other rays to kill tumor cells. The rays are emitted by the radiotherapy machine and pass through normal human tissue to reach the tumor. While killing tumor cells, the rays can also damage innocent normal organs. Existing radiotherapy technology can give tumors higher radiation doses while reducing the radiation dose of normal tissues. This is based on the three precise standards of radiotherapy, including precise positioning, precise design, and precise irradiation. Treatment position and position fixation are extremely important links in the design and implementation of tumor radiotherapy plans. During the entire radiotherapy process, positioning is a key influencing factor of "precise irradiation". In the implementation of chest and abdominal radiotherapy, there are many kinds of fixation methods used, among which commonly used ones include arm support fixation, vacuum pad fixation, thermoplastic film (body membrane) fixation, etc. Combining the advantages of different fixation devices, fixation plates and thermoplastic film are commonly used in clinical practice. The patient's position is fixed by combining thermoplastic film. Thermoplastic film is a polymer material. It is hard and sheet-like at room temperature. It becomes soft after being heated to 60-70 degrees Celsius. It can be shaped according to the patient's body contour and hardened and formed after being cooled at room temperature for 5-10 minutes. The positioning of body tumors requires the use of thermoplastic fixation film to fix the patient's body position. The production process of thermoplastic fixation film will also affect the positioning accuracy and treatment effect. When making thermoplastic fixation film, the patient's muscle tension must be eliminated, and the patient's body must be wrapped tightly. For breast cancer patients, thermoplastic film increases the patient's skin radiation dose and skin reaction. After the thermoplastic film and the patient are fitted to fix the body position, the thermoplastic film at the breast position must be cut off to expose the breast position, so that the thermoplastic film can fix the patient's body position to improve the accuracy of radiotherapy and reduce the problem of increased skin radiation dose caused by thermoplastic film.

[0003] In summary, the current breast cancer radiotherapy body membrane trimming process has the following technical problems: because the body membrane is heated and fitted to the patient, it presents an uneven curved surface structure as a whole, and the cutting position corresponding to the breast is in the middle of the body membrane. It is difficult for medical staff to trim it with scissors during clinical operations, or use heating wire to fuse the body membrane marking position corresponding to the breast. However, the breast is not a perfect circle, and the heating wire can be bent, but it is difficult to align on the body membrane after non-planar shaping. The bending of the heating wire on one side often causes changes on the other side. Finally, the bent heating wire forms a flat linear structure under the guidance of the marking line, but the body membrane around the breast is not flat, resulting in the fuse exposure area not matching the actual marking line. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention provides a breast cancer radiotherapy body membrane trimming device.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] A breast cancer radiotherapy body membrane trimming device comprises a control part, a longitudinal positioning part and a regional positioning part, wherein the control part comprises a positioning plate and a pressure pad, a pressure pad is placed on the lower side of the positioning plate, a plurality of regional positioning parts are arranged in a circular array on the lower side of the positioning plate, a longitudinal positioning part is connected to the lower side of the regional positioning part, the regional positioning part is provided with a positioning component close to the center of the positioning plate, and the longitudinal positioning part is provided with a longitudinally movable positioning mechanism.

[0007] Furthermore, the positioning assembly includes side plates and upper latching teeth, the regional positioning portion includes two side plates, the side plates are fixedly connected to the positioning plates, the positioning plates are provided with through grooves at the side plate positions, a slide is slidably connected between the two side plates, an upper slide groove is provided in the middle of the side plates, the side plates are provided with upper tooth grooves at the upper slide groove positions, the slide is fixedly connected with a slider at the slide groove position, the slider is slidably connected in the upper slide groove, the slider is slidably connected with an upper latching tooth, the upper latching tooth is engaged with the upper tooth groove, the upper latching tooth is fixedly connected with an upper connecting plate, and the slider is provided with an upper latching tooth away from the upper tooth groove The cam is provided with a plurality of upper and lower frames, and the upper and lower frames are provided with a plurality of upper and lower frames respectively.

[0008] Furthermore, a middle pressure plate is provided on the upper side of the positioning plate, a fixing column is fixedly connected to the lower middle side of the middle pressure plate, the fixing column is slidably connected in the middle of the positioning plate, a connecting column is fixedly connected to the lower end of the fixing column, and a pressure pad is fixedly connected to the lower side of the connecting column.

[0009] The lower frame is fixedly provided with a lower sliding surface, and the lower sliding surface is provided with a lower toothed groove in the middle of the lower sliding surface. The lower sliding surface is provided with a lower toothed groove at the position of the lower sliding groove, and the lower toothed groove is slidably connected with the lower locking tooth, and the lower locking tooth is engaged with the lower toothed groove. The lower locking tooth is fixedly connected with the lower connecting plate toward the direction of the fixing column, and the lower connecting plate is fixedly connected with the lower inclined plane frame, and the lower fixing frame is fixedly connected with the sliding frame at the lower side of the lower inclined plane frame, and the lower inclined plane frame is slidably connected to the sliding frame;

[0010] An extension plate is fixedly connected to the corresponding position of the sliding frame at the lower side of the fixed column, and a lower push frame is fixedly connected to the lower side of the extension plate. The lower push frame cooperates with the lower inclined frame, and the lower push frame is slidably connected to the middle of the sliding frame.

[0011] Furthermore, a support ring is fixedly connected to the lower end of the lower slide plate, a heating wire is provided on the support ring, and one end of the heating wire is fixedly connected to a power line.

[0012] Furthermore, the heating wire is an annular structure with two turns of coiling, and can change the coiling state and maintain the continuity of shearing as all the branch rings form a structure that is enlarged or reduced.

[0013] Furthermore, the heating wire is an arc-shaped structure, the heating wire is fixedly connected to the branch ring, and the heating wire is slidably connected to the heating wires on both sides, so as to meet the changes in the enlargement and reduction of the structure constituting all the branch rings. Through the thin shell structure of the heating wire and the shape of the iron wire formed by iron, the overall arc can be bent as the branch ring rises, falls, moves forward and backward, and the current of the power line is connected so that the entire heating wire can be heated, and a resistance heating control element is provided between the heating wire and the power line.

[0014] Beneficial effects of the present invention:

[0015] A breast cancer radiotherapy body membrane trimming device, when in use, draw the area of ​​the breast that needs to be exposed on the body membrane that fits the patient's shape and is fixed, place the pressure pad in the middle of the drawn area, and press down the middle pressure plate to stabilize the relative position of the device as a whole and the body membrane. During the downward pressing process, due to the curved surface structure of the body membrane, some lower fixing frames are not in contact with the body membrane and are in a suspended state, while some lower fixing frames are in contact with the body membrane and the body membrane provides upward support for the lower fixing frame. Because the middle pressure plate is pressed, the lower fixing frame supported by the body membrane supports the positioning plate upward to remain motionless, and the middle pressure plate is relatively The positioning plate moves downward, and the lower push frame of the extension plate on the fixed column at the lower side of the middle pressure plate cooperates with the corresponding lower inclined frame, so that the lower clamping teeth are disengaged from the lower tooth grooves, and the lower slide plates are completely relaxed. The lower slide plates of the lower fixed frame that are not in contact with the body membrane naturally fall on the surface of the curved body membrane under gravity. At this time, all body membranes initially contact the support of the positioning plate by the lower fixed frame, and the lower clamping teeth and the lower tooth grooves remain disengaged, keeping all lower slide plates in an active state, and moving the regional positioning parts in turn. During the movement, if the regional positioning part is pushed inward, the upper pressure plate on the outer side of the slide frame is pushed. If the regional positioning part is pulled outward, , then buckle and pull the upper pressure plate on the inner side of the slide. When the upper pressure plate is triggered, the upper inclined block is pushed by the upper push frame of the upper pressure plate, so that the upper clamping tooth disengages from the upper tooth groove, and the slide moves in the side plate. In the process of moving the slide, the movable lower slide plate moves longitudinally on the curved body membrane, fitting the curved surface position of the body membrane at any time, and there will be no problem of getting stuck. After moving to the breast marking line position on the body membrane, the upper pressure plate is released, and the upper clamping tooth is stuck in the upper tooth groove, so that the regional positioning part is locked at the breast marking line position, and there will be no problem of the lower fixing frame being pressed down along the breast due to the downward pressure on the middle pressure plate. To solve the problem of the body membrane sliding around at the breast position, after the entire area positioning part carries the longitudinal positioning part to complete the breast marking line positioning, release the downward middle pressure plate, reset the lower push frame and the lower inclined frame, and the lower tooth is stuck in the lower tooth groove. The longitudinal positioning part is locked, the overall locking is completed and the heating wire is fitted to the breast marking line position through the support ring. Then the heating wire is powered on and heated, and the breast position of the body membrane is sheared to retain the effect of the body membrane on supporting the patient's position and avoid the problem of increased skin irradiation dose caused by the body membrane. Ultimately, the effect of accurate body membrane trimming is achieved to achieve the purpose of precise radiotherapy.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1This is a schematic diagram of the overall structure of the breast cancer radiotherapy body membrane trimming device according to an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structural connection of the control unit according to an embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the control unit, the longitudinal positioning unit and the regional positioning unit according to an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the longitudinal positioning part and the regional positioning part according to an embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the slide according to an embodiment of the present invention;

[0023] Figure 6 is a schematic cross-sectional structure diagram of a slide according to an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of the cross-sectional structure of the side panel according to an embodiment of the present invention;

[0025] Figure 8 It is a structural schematic diagram of the upper pressing plate and the middle plate according to an embodiment of the present invention;

[0026] Fig. 9 It is a schematic structural diagram of the upper push frame and the upper inclined frame according to an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the control unit and the area positioning unit according to the embodiment of the present invention;

[0028] Fig.11 It is a structural schematic diagram of the lower slide plate and the control part according to an embodiment of the present invention;

[0029] Fig.12 It is a schematic structural diagram of the fixed column, the extension plate and the push-down frame according to an embodiment of the present invention;

[0030] Fig.13 is a schematic cross-sectional structural diagram of the lower fixing frame according to an embodiment of the present invention;

[0031] Fig.14 It is a structural schematic diagram of the lower push frame and the lower inclined frame according to an embodiment of the present invention;

[0032] Fig.15 It is a schematic diagram of the structure of the heating wire and the power line described in an embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1-positioning plate, 101-middle pressure plate, 102-fixed column, 103-connecting column, 104-pressure pad, 105-middle pressure spring, 110-extension plate, 111-lower push frame, 2-side plate, 201-upper slide, 202-upper tooth groove, 210-slide, 211-slider, 212-upper tooth, 213-upper pressure spring, 214-upper connecting plate, 215-upper connecting seat, 216-upper inclined Surface frame, 220-upper pressure plate, 221-upper push frame, 222-reset spring, 223-middle plate, 224-fixed plate, 3-lower fixed frame, 310-lower slide plate, 311-lower sliding groove, 312-lower tooth groove, 313-support ring, 320-lower clamping tooth, 321-lower pressure spring, 322-lower connecting plate, 323-lower inclined frame, 324-sliding frame, 330-heating wire, 331-power cord. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figure 1-15 Shown

[0038] The breast cancer radiotherapy body membrane trimming device of the present invention comprises a control unit, a longitudinal positioning unit and a regional positioning unit, the control unit comprising a positioning plate (1) and a pressure pad (104), the positioning plate (1) having a pressure pad (104) placed on the lower side, the positioning plate (1) having a plurality of regional positioning units in a circular array on the lower side, the regional positioning units having a longitudinal positioning unit connected to the lower side, the regional positioning units having a positioning component close to the center of the positioning plate (1), and the longitudinal positioning units having a longitudinally movable positioning mechanism;

[0039] The positioning assembly comprises a side plate (2) and an upper latching tooth (212), the area positioning portion comprises two side plates (2), the side plates (2) are fixedly connected to the positioning plate (1), the positioning plate (1) has a through groove at the position of the side plate (2), a slide frame (210) is slidably connected between the two side plates (2), an upper slide groove (201) is formed in the middle of the side plate (2), an upper tooth groove (202) is formed at the position of the upper slide groove (201), and the slide frame (2 10) A slider (211) is fixedly connected to the slide groove position, the slider (211) is slidably connected in the upper slide groove (201), an upper latching tooth (212) is slidably connected to the slider (211), the upper latching tooth (212) is engaged with the upper tooth groove (202), the upper latching tooth (212) is fixedly connected to an upper connecting plate (214), a slot hole is opened on the slider (211) so that the upper latching tooth (212) is away from the upper tooth groove (202), and the upper connecting plate (214) is fixedly connected to the upper tooth groove (202). An upper compression spring (213) is fixedly connected between the upper connecting plate (214) and the slider (211); an upper connecting seat (215) is fixedly connected to the lower side of the upper connecting seat (215); two upper inclined plane frames (216) are fixedly connected to the lower side of the upper connecting seat (215); the inclined plane of the upper inclined plane frame (216) is located on the side of the upper connecting seat (215) close to the upper latching tooth (212); the slide (210) is provided with upper pressure plates (220) on both sides of the length direction of the side plate (2); A middle plate (223) is provided between the pressure plates (220), the middle plate (223) is fixedly connected to the slide frame (210), a return spring (222) is fixedly connected between the upper pressure plate (220) and the middle plate (223), a fixed plate (224) is fixedly connected to the lower side of the middle plate (223), the upper pressure plate (220) is slidably connected to the fixed plate (224), and an upper push frame (221) that cooperates with the upper inclined frame (216) is provided on the upper pressure plate (220);

[0040] A middle pressure plate (101) is provided on the upper side of the positioning plate (1), a fixing column (102) is fixedly connected to the lower middle side of the middle pressure plate (101), the fixing column (102) is slidably connected to the middle of the positioning plate (1), a connecting column (103) is fixedly connected to the lower end of the fixing column (102), and a pressure pad (104) is fixedly connected to the lower side of the connecting column (103);

[0041] Example 2

[0042] like Figure 10-15 Shown

[0043] The positioning mechanism comprises a lower slide plate (310) and a lower latching tooth (320); a lower fixed frame (3) is fixedly connected to the lower side of the fixed plate (224); the lower fixed frame (3) is slidably connected to the lower slide plate (310); a lower sliding groove (311) is provided in the middle of the lower slide plate (310); a lower tooth groove (312) is provided on the lower slide plate (310) at the position of the lower sliding groove (311); the lower latching tooth (320) is slidably connected to the lower tooth groove (312); the lower latching tooth (320) is engaged with the lower tooth groove (312); a slot hole is provided on the lower fixed frame (3) so that the lower latching tooth (320) is away from the lower tooth groove (312); a lower latching tooth (320) is fixedly connected to the lower fixed frame (3) with a lower latching tooth (320). Spring (321), the lower latching tooth (320) is fixedly connected with a lower connecting plate (322) in the direction of the fixed column (102), the lower connecting plate (322) is fixedly connected with a lower inclined frame (323), the lower fixed frame (3) is fixedly connected with a sliding frame (324) at the lower side of the lower inclined frame (323), and the lower inclined frame (323) is slidably connected to the sliding frame (324); an extension plate (110) is fixedly connected with a corresponding position of the lower side of the fixed column (102) and the sliding frame (324), the lower side of the extension plate (110) is fixedly connected with a lower push frame (111), the lower push frame (111) cooperates with the lower inclined frame (323), and the lower push frame (111) is slidably connected in the middle of the sliding frame (324);

[0044] The lower end of the lower slide plate (310) is fixedly connected to a support ring (313), a heating wire (330) is provided on the support ring (313), and one end of the heating wire (330) is fixedly connected to a power line (331);

[0045] The heating wire (330) is an annular structure with two coils and an open structure, and can change the coiling state as the structure formed by all the branch rings (313) is enlarged or reduced, thereby maintaining the continuity of shearing;

[0046] Example 3

[0047] like Figure 1 , 15 Shown

[0048] The heating wire (330) is an arc-shaped structure. The heating wire (330) is fixedly connected to the support ring (313). The heating wire (330) is slidably connected to the heating wires (330) on both sides, so as to meet the changes in the enlargement and reduction of the structure of all the support rings (313). Through the thin shell structure of the heating wire (330) and the form of the iron wire formed by iron, the heating wire (330) can be bent in an overall arc as the support ring (313) rises, falls, moves forward and backward, and the current of the power line (331) is connected so that the heating wire (330) can be heated as a whole. A resistance heating control element is provided between the heating wire (330) and the power line (331).

[0049] In summary, the present invention provides a breast cancer radiotherapy body membrane trimming device. When in use, the area of ​​the breast that needs to be exposed is drawn on the body membrane that has been fixed to fit the patient's morphology, the pressure pad (104) is placed in the middle of the drawn area, and the middle pressure plate (101) is pressed downward to stabilize the relative position of the device as a whole and the body membrane. During the downward pressing process, due to the curved surface structure of the body membrane, some lower fixing frames (3) are not in contact with the body membrane and are in a suspended state, while some lower fixing frames (3) are in contact with the body membrane and the body membrane provides upward support for the lower fixing frames (3). Because the middle pressure plate (101) is pressed, the lower fixing frame (3) supported by the body membrane supports the positioning plate (1) upward to remain motionless, and the middle pressure plate (101) moves downward relative to the positioning plate (1). The middle pressure plate (101) The lower push frame (111) of the extension plate (110) on the lower fixed column (102) cooperates with the corresponding lower inclined frame (323) to disengage the lower tooth (320) from the lower tooth groove (312), and the lower slide plate (310) is completely relaxed. The lower slide plate (310) of the lower fixed frame (3) that is not in contact with the body membrane naturally falls on the surface of the curved body membrane due to gravity. At this time, all body membranes support the positioning plate (1) through the initial contact with the lower fixed frame (3). The lower tooth (320) and the lower tooth groove (312) are maintained in a disengaged state, and all lower slide plates (310) are kept in an active state, and the regional positioning parts are moved in turn. During the movement, if the regional positioning part is pushed inward, the upper pressure plate (220) on the outer side of the slide frame (210) is pushed. If the regional positioning part is pulled outward, the upper pressure plate (220) on the outer side of the slide frame (210) is pushed. The area positioning part buckles and pulls the upper pressure plate (220) on the inner side of the slide (210). When the upper pressure plate (220) is triggered, the upper push frame (221) of the upper pressure plate (220) pushes the upper inclined surface block, so that the upper clamping tooth (212) is disengaged from the upper tooth groove (202), and the slide (210) moves in the side plate (2). During the movement of the slide (210), the movable lower slide plate (310) moves longitudinally on the curved body membrane, fitting the curved surface position of the body membrane at any time, and no stuck problem occurs. After moving to the breast mark line position on the body membrane, the upper pressure plate (220) is released, and the upper clamping tooth (212) is stuck in the upper tooth groove (202), so that the area positioning part is locked at the breast mark line position, and no problem occurs due to pressing the middle pressure plate (10) downward. 1) The problem that the lower fixing frame (3) slides around along the breast position body membrane due to downward pressure is solved. After the positioning part of the entire area carries the longitudinal positioning part to complete the positioning of the breast mark line, the downward pressing middle pressure plate (101) is released, the lower push frame (111) and the lower inclined frame (323) are reset, the lower clamping tooth (320) is clamped in the lower tooth groove (312), the longitudinal positioning part is locked, the overall locking is completed, and the heating wire (330) is fitted at the breast mark line position through the support ring (313), and then the heating wire (330) is powered on for heating, and the breast position of the body membrane is sheared, so as to retain the effect of the body membrane on supporting the patient's body position and avoid the problem of increased skin irradiation dose caused by the body membrane, and finally achieve the effect of accurate body membrane trimming and achieve the purpose of precise radiotherapy.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A breast cancer radiotherapy body membrane trimming device, characterized in that: It includes a control part, a longitudinal positioning part and a regional positioning part. The control part includes a positioning plate and a pressure pad. A pressure pad is placed on the lower side of the positioning plate. There are several regional positioning parts in a circular array on the lower side of the positioning plate. The lower side of the regional positioning part is connected to the longitudinal positioning part. The regional positioning part is provided with a positioning component close to the center of the positioning plate, and the longitudinal positioning part is provided with a longitudinally movable positioning mechanism.

2. The breast cancer radiotherapy body membrane trimming device according to claim 1, characterized in that: The positioning assembly includes a side plate and an upper clamping tooth, the regional positioning part includes two side plates, the side plates are fixedly connected to the positioning plate, the positioning plate is provided with a through slot at the side plate position, a slide is slidably connected between the two side plates, an upper slide slot is provided in the middle of the side plates, an upper tooth slot is provided at the upper slide slot position, the slide is fixedly connected with a slider at the slide slot position, the slider is slidably connected in the upper slide slot, an upper clamping tooth is slidably connected on the slider, the upper clamping tooth is clamped and matched with the upper tooth slot, the upper clamping tooth is fixedly connected with the upper connecting plate, and a slot hole of the upper clamping tooth away from the upper tooth slot is provided on the slider. The cam is provided with an upper pressing plate and a lower pressing plate, and the lower pressing plate is provided with an upper pushing plate, and the pushing ...

3. The breast cancer radiotherapy body membrane trimming device according to claim 2, characterized in that: A middle pressure plate is provided on the upper side of the positioning plate, a fixing column is fixedly connected to the lower middle side of the middle pressure plate, the fixing column is slidably connected in the middle of the positioning plate, a connecting column is fixedly connected to the lower end of the fixing column, and a pressure pad is fixedly connected to the lower side of the connecting column.

4. The breast cancer radiotherapy body membrane trimming device according to claim 3, characterized in that: The lower frame is fixedly provided with a lower sliding plate and a lower locking plate, and the lower sliding plate is provided with a lower toothed groove in the middle of the lower sliding plate, and the lower sliding groove is slidably connected with the lower locking plate, and the lower locking plate is engaged with the lower toothed groove by snapping. The lower locking plate is provided with a slot hole away from the lower locking toothed groove on the lower frame, and a lower compression spring is fixedly connected with the lower connecting plate toward the direction of the fixing column, and the lower connecting plate is fixedly connected with the lower inclined plane frame, and the lower fixing frame is fixedly connected with the sliding frame at the lower side of the lower inclined plane frame, and the lower inclined plane frame is slidably connected to the sliding frame. An extension plate is fixedly connected to the corresponding position of the sliding frame at the lower side of the fixed column, and a lower push frame is fixedly connected to the lower side of the extension plate. The lower push frame cooperates with the lower inclined frame, and the lower push frame is slidably connected to the middle of the sliding frame.

5. The breast cancer radiotherapy body membrane trimming device according to claim 4, characterized in that: The lower end of the lower slide plate is fixedly connected with a support ring, the support ring is provided with a heating wire, and one end of the heating wire is fixedly connected with a power line.

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